diff options
| -rw-r--r-- | Gruntfile.js | 2 | ||||
| -rw-r--r-- | theme/assets/app.js | 21375 | ||||
| -rw-r--r-- | theme/javascript/app.js | 3 | ||||
| -rw-r--r-- | theme/javascript/core/exercise.js | 2 | ||||
| -rw-r--r-- | theme/javascript/core/progress.js | 2 | ||||
| -rw-r--r-- | theme/javascript/core/sidebar.js | 28 | ||||
| -rw-r--r-- | theme/javascript/core/state.js | 12 |
7 files changed, 21399 insertions, 25 deletions
diff --git a/Gruntfile.js b/Gruntfile.js index cdb853b..4a6a8f4 100644 --- a/Gruntfile.js +++ b/Gruntfile.js @@ -28,7 +28,7 @@ module.exports = function (grunt) { baseUrl: "theme/javascript/", out: "theme/assets/app.js", preserveLicenseComments: false, - optimize: "uglify", + optimize: "none", //"uglify", include: ["requireLib"], paths: { "jQuery": 'vendors/jquery', diff --git a/theme/assets/app.js b/theme/assets/app.js index 9042a2c..3600e7f 100644 --- a/theme/assets/app.js +++ b/theme/assets/app.js @@ -1 +1,21374 @@ -var requirejs,require,define;(function(global){function isFunction(e){return ostring.call(e)==="[object Function]"}function isArray(e){return ostring.call(e)==="[object Array]"}function each(e,t){if(e){var n;for(n=0;n<e.length;n+=1)if(e[n]&&t(e[n],n,e))break}}function eachReverse(e,t){if(e){var n;for(n=e.length-1;n>-1;n-=1)if(e[n]&&t(e[n],n,e))break}}function hasProp(e,t){return hasOwn.call(e,t)}function getOwn(e,t){return hasProp(e,t)&&e[t]}function eachProp(e,t){var 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\ No newline at end of file +/** vim: et:ts=4:sw=4:sts=4 + * @license RequireJS 2.1.10 Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. + * Available via the MIT or new BSD license. + * see: http://github.com/jrburke/requirejs for details + */ +//Not using strict: uneven strict support in browsers, #392, and causes +//problems with requirejs.exec()/transpiler plugins that may not be strict. +/*jslint regexp: true, nomen: true, sloppy: true */ +/*global window, navigator, document, importScripts, setTimeout, opera */ + +var requirejs, require, define; +(function (global) { + var req, s, head, baseElement, dataMain, src, + interactiveScript, currentlyAddingScript, mainScript, subPath, + version = '2.1.10', + commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg, + cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g, + jsSuffixRegExp = /\.js$/, + currDirRegExp = /^\.\//, + op = Object.prototype, + ostring = op.toString, + hasOwn = op.hasOwnProperty, + ap = Array.prototype, + apsp = ap.splice, + isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document), + isWebWorker = !isBrowser && typeof importScripts !== 'undefined', + //PS3 indicates loaded and complete, but need to wait for complete + //specifically. Sequence is 'loading', 'loaded', execution, + // then 'complete'. The UA check is unfortunate, but not sure how + //to feature test w/o causing perf issues. + readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ? + /^complete$/ : /^(complete|loaded)$/, + defContextName = '_', + //Oh the tragedy, detecting opera. See the usage of isOpera for reason. + isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]', + contexts = {}, + cfg = {}, + globalDefQueue = [], + useInteractive = false; + + function isFunction(it) { + return ostring.call(it) === '[object Function]'; + } + + function isArray(it) { + return ostring.call(it) === '[object Array]'; + } + + /** + * Helper function for iterating over an array. If the func returns + * a true value, it will break out of the loop. + */ + function each(ary, func) { + if (ary) { + var i; + for (i = 0; i < ary.length; i += 1) { + if (ary[i] && func(ary[i], i, ary)) { + break; + } + } + } + } + + /** + * Helper function for iterating over an array backwards. If the func + * returns a true value, it will break out of the loop. + */ + function eachReverse(ary, func) { + if (ary) { + var i; + for (i = ary.length - 1; i > -1; i -= 1) { + if (ary[i] && func(ary[i], i, ary)) { + break; + } + } + } + } + + function hasProp(obj, prop) { + return hasOwn.call(obj, prop); + } + + function getOwn(obj, prop) { + return hasProp(obj, prop) && obj[prop]; + } + + /** + * Cycles over properties in an object and calls a function for each + * property value. If the function returns a truthy value, then the + * iteration is stopped. + */ + function eachProp(obj, func) { + var prop; + for (prop in obj) { + if (hasProp(obj, prop)) { + if (func(obj[prop], prop)) { + break; + } + } + } + } + + /** + * Simple function to mix in properties from source into target, + * but only if target does not already have a property of the same name. + */ + function mixin(target, source, force, deepStringMixin) { + if (source) { + eachProp(source, function (value, prop) { + if (force || !hasProp(target, prop)) { + if (deepStringMixin && typeof value === 'object' && value && + !isArray(value) && !isFunction(value) && + !(value instanceof RegExp)) { + + if (!target[prop]) { + target[prop] = {}; + } + mixin(target[prop], value, force, deepStringMixin); + } else { + target[prop] = value; + } + } + }); + } + return target; + } + + //Similar to Function.prototype.bind, but the 'this' object is specified + //first, since it is easier to read/figure out what 'this' will be. + function bind(obj, fn) { + return function () { + return fn.apply(obj, arguments); + }; + } + + function scripts() { + return document.getElementsByTagName('script'); + } + + function defaultOnError(err) { + throw err; + } + + //Allow getting a global that expressed in + //dot notation, like 'a.b.c'. + function getGlobal(value) { + if (!value) { + return value; + } + var g = global; + each(value.split('.'), function (part) { + g = g[part]; + }); + return g; + } + + /** + * Constructs an error with a pointer to an URL with more information. + * @param {String} id the error ID that maps to an ID on a web page. + * @param {String} message human readable error. + * @param {Error} [err] the original error, if there is one. + * + * @returns {Error} + */ + function makeError(id, msg, err, requireModules) { + var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id); + e.requireType = id; + e.requireModules = requireModules; + if (err) { + e.originalError = err; + } + return e; + } + + if (typeof define !== 'undefined') { + //If a define is already in play via another AMD loader, + //do not overwrite. + return; + } + + if (typeof requirejs !== 'undefined') { + if (isFunction(requirejs)) { + //Do not overwrite and existing requirejs instance. + return; + } + cfg = requirejs; + requirejs = undefined; + } + + //Allow for a require config object + if (typeof require !== 'undefined' && !isFunction(require)) { + //assume it is a config object. + cfg = require; + require = undefined; + } + + function newContext(contextName) { + var inCheckLoaded, Module, context, handlers, + checkLoadedTimeoutId, + config = { + //Defaults. Do not set a default for map + //config to speed up normalize(), which + //will run faster if there is no default. + waitSeconds: 7, + baseUrl: './', + paths: {}, + bundles: {}, + pkgs: {}, + shim: {}, + config: {} + }, + registry = {}, + //registry of just enabled modules, to speed + //cycle breaking code when lots of modules + //are registered, but not activated. + enabledRegistry = {}, + undefEvents = {}, + defQueue = [], + defined = {}, + urlFetched = {}, + bundlesMap = {}, + requireCounter = 1, + unnormalizedCounter = 1; + + /** + * Trims the . and .. from an array of path segments. + * It will keep a leading path segment if a .. will become + * the first path segment, to help with module name lookups, + * which act like paths, but can be remapped. But the end result, + * all paths that use this function should look normalized. + * NOTE: this method MODIFIES the input array. + * @param {Array} ary the array of path segments. + */ + function trimDots(ary) { + var i, part, length = ary.length; + for (i = 0; i < length; i++) { + part = ary[i]; + if (part === '.') { + ary.splice(i, 1); + i -= 1; + } else if (part === '..') { + if (i === 1 && (ary[2] === '..' || ary[0] === '..')) { + //End of the line. Keep at least one non-dot + //path segment at the front so it can be mapped + //correctly to disk. Otherwise, there is likely + //no path mapping for a path starting with '..'. + //This can still fail, but catches the most reasonable + //uses of .. + break; + } else if (i > 0) { + ary.splice(i - 1, 2); + i -= 2; + } + } + } + } + + /** + * Given a relative module name, like ./something, normalize it to + * a real name that can be mapped to a path. + * @param {String} name the relative name + * @param {String} baseName a real name that the name arg is relative + * to. + * @param {Boolean} applyMap apply the map config to the value. Should + * only be done if this normalization is for a dependency ID. + * @returns {String} normalized name + */ + function normalize(name, baseName, applyMap) { + var pkgMain, mapValue, nameParts, i, j, nameSegment, lastIndex, + foundMap, foundI, foundStarMap, starI, + baseParts = baseName && baseName.split('/'), + normalizedBaseParts = baseParts, + map = config.map, + starMap = map && map['*']; + + //Adjust any relative paths. + if (name && name.charAt(0) === '.') { + //If have a base name, try to normalize against it, + //otherwise, assume it is a top-level require that will + //be relative to baseUrl in the end. + if (baseName) { + //Convert baseName to array, and lop off the last part, + //so that . matches that 'directory' and not name of the baseName's + //module. For instance, baseName of 'one/two/three', maps to + //'one/two/three.js', but we want the directory, 'one/two' for + //this normalization. + normalizedBaseParts = baseParts.slice(0, baseParts.length - 1); + name = name.split('/'); + lastIndex = name.length - 1; + + // If wanting node ID compatibility, strip .js from end + // of IDs. Have to do this here, and not in nameToUrl + // because node allows either .js or non .js to map + // to same file. + if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) { + name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, ''); + } + + name = normalizedBaseParts.concat(name); + trimDots(name); + name = name.join('/'); + } else if (name.indexOf('./') === 0) { + // No baseName, so this is ID is resolved relative + // to baseUrl, pull off the leading dot. + name = name.substring(2); + } + } + + //Apply map config if available. + if (applyMap && map && (baseParts || starMap)) { + nameParts = name.split('/'); + + outerLoop: for (i = nameParts.length; i > 0; i -= 1) { + nameSegment = nameParts.slice(0, i).join('/'); + + if (baseParts) { + //Find the longest baseName segment match in the config. + //So, do joins on the biggest to smallest lengths of baseParts. + for (j = baseParts.length; j > 0; j -= 1) { + mapValue = getOwn(map, baseParts.slice(0, j).join('/')); + + //baseName segment has config, find if it has one for + //this name. + if (mapValue) { + mapValue = getOwn(mapValue, nameSegment); + if (mapValue) { + //Match, update name to the new value. + foundMap = mapValue; + foundI = i; + break outerLoop; + } + } + } + } + + //Check for a star map match, but just hold on to it, + //if there is a shorter segment match later in a matching + //config, then favor over this star map. + if (!foundStarMap && starMap && getOwn(starMap, nameSegment)) { + foundStarMap = getOwn(starMap, nameSegment); + starI = i; + } + } + + if (!foundMap && foundStarMap) { + foundMap = foundStarMap; + foundI = starI; + } + + if (foundMap) { + nameParts.splice(0, foundI, foundMap); + name = nameParts.join('/'); + } + } + + // If the name points to a package's name, use + // the package main instead. + pkgMain = getOwn(config.pkgs, name); + + return pkgMain ? pkgMain : name; + } + + function removeScript(name) { + if (isBrowser) { + each(scripts(), function (scriptNode) { + if (scriptNode.getAttribute('data-requiremodule') === name && + scriptNode.getAttribute('data-requirecontext') === context.contextName) { + scriptNode.parentNode.removeChild(scriptNode); + return true; + } + }); + } + } + + function hasPathFallback(id) { + var pathConfig = getOwn(config.paths, id); + if (pathConfig && isArray(pathConfig) && pathConfig.length > 1) { + //Pop off the first array value, since it failed, and + //retry + pathConfig.shift(); + context.require.undef(id); + context.require([id]); + return true; + } + } + + //Turns a plugin!resource to [plugin, resource] + //with the plugin being undefined if the name + //did not have a plugin prefix. + function splitPrefix(name) { + var prefix, + index = name ? name.indexOf('!') : -1; + if (index > -1) { + prefix = name.substring(0, index); + name = name.substring(index + 1, name.length); + } + return [prefix, name]; + } + + /** + * Creates a module mapping that includes plugin prefix, module + * name, and path. If parentModuleMap is provided it will + * also normalize the name via require.normalize() + * + * @param {String} name the module name + * @param {String} [parentModuleMap] parent module map + * for the module name, used to resolve relative names. + * @param {Boolean} isNormalized: is the ID already normalized. + * This is true if this call is done for a define() module ID. + * @param {Boolean} applyMap: apply the map config to the ID. + * Should only be true if this map is for a dependency. + * + * @returns {Object} + */ + function makeModuleMap(name, parentModuleMap, isNormalized, applyMap) { + var url, pluginModule, suffix, nameParts, + prefix = null, + parentName = parentModuleMap ? parentModuleMap.name : null, + originalName = name, + isDefine = true, + normalizedName = ''; + + //If no name, then it means it is a require call, generate an + //internal name. + if (!name) { + isDefine = false; + name = '_@r' + (requireCounter += 1); + } + + nameParts = splitPrefix(name); + prefix = nameParts[0]; + name = nameParts[1]; + + if (prefix) { + prefix = normalize(prefix, parentName, applyMap); + pluginModule = getOwn(defined, prefix); + } + + //Account for relative paths if there is a base name. + if (name) { + if (prefix) { + if (pluginModule && pluginModule.normalize) { + //Plugin is loaded, use its normalize method. + normalizedName = pluginModule.normalize(name, function (name) { + return normalize(name, parentName, applyMap); + }); + } else { + normalizedName = normalize(name, parentName, applyMap); + } + } else { + //A regular module. + normalizedName = normalize(name, parentName, applyMap); + + //Normalized name may be a plugin ID due to map config + //application in normalize. The map config values must + //already be normalized, so do not need to redo that part. + nameParts = splitPrefix(normalizedName); + prefix = nameParts[0]; + normalizedName = nameParts[1]; + isNormalized = true; + + url = context.nameToUrl(normalizedName); + } + } + + //If the id is a plugin id that cannot be determined if it needs + //normalization, stamp it with a unique ID so two matching relative + //ids that may conflict can be separate. + suffix = prefix && !pluginModule && !isNormalized ? + '_unnormalized' + (unnormalizedCounter += 1) : + ''; + + return { + prefix: prefix, + name: normalizedName, + parentMap: parentModuleMap, + unnormalized: !!suffix, + url: url, + originalName: originalName, + isDefine: isDefine, + id: (prefix ? + prefix + '!' + normalizedName : + normalizedName) + suffix + }; + } + + function getModule(depMap) { + var id = depMap.id, + mod = getOwn(registry, id); + + if (!mod) { + mod = registry[id] = new context.Module(depMap); + } + + return mod; + } + + function on(depMap, name, fn) { + var id = depMap.id, + mod = getOwn(registry, id); + + if (hasProp(defined, id) && + (!mod || mod.defineEmitComplete)) { + if (name === 'defined') { + fn(defined[id]); + } + } else { + mod = getModule(depMap); + if (mod.error && name === 'error') { + fn(mod.error); + } else { + mod.on(name, fn); + } + } + } + + function onError(err, errback) { + var ids = err.requireModules, + notified = false; + + if (errback) { + errback(err); + } else { + each(ids, function (id) { + var mod = getOwn(registry, id); + if (mod) { + //Set error on module, so it skips timeout checks. + mod.error = err; + if (mod.events.error) { + notified = true; + mod.emit('error', err); + } + } + }); + + if (!notified) { + req.onError(err); + } + } + } + + /** + * Internal method to transfer globalQueue items to this context's + * defQueue. + */ + function takeGlobalQueue() { + //Push all the globalDefQueue items into the context's defQueue + if (globalDefQueue.length) { + //Array splice in the values since the context code has a + //local var ref to defQueue, so cannot just reassign the one + //on context. + apsp.apply(defQueue, + [defQueue.length, 0].concat(globalDefQueue)); + globalDefQueue = []; + } + } + + handlers = { + 'require': function (mod) { + if (mod.require) { + return mod.require; + } else { + return (mod.require = context.makeRequire(mod.map)); + } + }, + 'exports': function (mod) { + mod.usingExports = true; + if (mod.map.isDefine) { + if (mod.exports) { + return mod.exports; + } else { + return (mod.exports = defined[mod.map.id] = {}); + } + } + }, + 'module': function (mod) { + if (mod.module) { + return mod.module; + } else { + return (mod.module = { + id: mod.map.id, + uri: mod.map.url, + config: function () { + return getOwn(config.config, mod.map.id) || {}; + }, + exports: handlers.exports(mod) + }); + } + } + }; + + function cleanRegistry(id) { + //Clean up machinery used for waiting modules. + delete registry[id]; + delete enabledRegistry[id]; + } + + function breakCycle(mod, traced, processed) { + var id = mod.map.id; + + if (mod.error) { + mod.emit('error', mod.error); + } else { + traced[id] = true; + each(mod.depMaps, function (depMap, i) { + var depId = depMap.id, + dep = getOwn(registry, depId); + + //Only force things that have not completed + //being defined, so still in the registry, + //and only if it has not been matched up + //in the module already. + if (dep && !mod.depMatched[i] && !processed[depId]) { + if (getOwn(traced, depId)) { + mod.defineDep(i, defined[depId]); + mod.check(); //pass false? + } else { + breakCycle(dep, traced, processed); + } + } + }); + processed[id] = true; + } + } + + function checkLoaded() { + var err, usingPathFallback, + waitInterval = config.waitSeconds * 1000, + //It is possible to disable the wait interval by using waitSeconds of 0. + expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(), + noLoads = [], + reqCalls = [], + stillLoading = false, + needCycleCheck = true; + + //Do not bother if this call was a result of a cycle break. + if (inCheckLoaded) { + return; + } + + inCheckLoaded = true; + + //Figure out the state of all the modules. + eachProp(enabledRegistry, function (mod) { + var map = mod.map, + modId = map.id; + + //Skip things that are not enabled or in error state. + if (!mod.enabled) { + return; + } + + if (!map.isDefine) { + reqCalls.push(mod); + } + + if (!mod.error) { + //If the module should be executed, and it has not + //been inited and time is up, remember it. + if (!mod.inited && expired) { + if (hasPathFallback(modId)) { + usingPathFallback = true; + stillLoading = true; + } else { + noLoads.push(modId); + removeScript(modId); + } + } else if (!mod.inited && mod.fetched && map.isDefine) { + stillLoading = true; + if (!map.prefix) { + //No reason to keep looking for unfinished + //loading. If the only stillLoading is a + //plugin resource though, keep going, + //because it may be that a plugin resource + //is waiting on a non-plugin cycle. + return (needCycleCheck = false); + } + } + } + }); + + if (expired && noLoads.length) { + //If wait time expired, throw error of unloaded modules. + err = makeError('timeout', 'Load timeout for modules: ' + noLoads, null, noLoads); + err.contextName = context.contextName; + return onError(err); + } + + //Not expired, check for a cycle. + if (needCycleCheck) { + each(reqCalls, function (mod) { + breakCycle(mod, {}, {}); + }); + } + + //If still waiting on loads, and the waiting load is something + //other than a plugin resource, or there are still outstanding + //scripts, then just try back later. + if ((!expired || usingPathFallback) && stillLoading) { + //Something is still waiting to load. Wait for it, but only + //if a timeout is not already in effect. + if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) { + checkLoadedTimeoutId = setTimeout(function () { + checkLoadedTimeoutId = 0; + checkLoaded(); + }, 50); + } + } + + inCheckLoaded = false; + } + + Module = function (map) { + this.events = getOwn(undefEvents, map.id) || {}; + this.map = map; + this.shim = getOwn(config.shim, map.id); + this.depExports = []; + this.depMaps = []; + this.depMatched = []; + this.pluginMaps = {}; + this.depCount = 0; + + /* this.exports this.factory + this.depMaps = [], + this.enabled, this.fetched + */ + }; + + Module.prototype = { + init: function (depMaps, factory, errback, options) { + options = options || {}; + + //Do not do more inits if already done. Can happen if there + //are multiple define calls for the same module. That is not + //a normal, common case, but it is also not unexpected. + if (this.inited) { + return; + } + + this.factory = factory; + + if (errback) { + //Register for errors on this module. + this.on('error', errback); + } else if (this.events.error) { + //If no errback already, but there are error listeners + //on this module, set up an errback to pass to the deps. + errback = bind(this, function (err) { + this.emit('error', err); + }); + } + + //Do a copy of the dependency array, so that + //source inputs are not modified. For example + //"shim" deps are passed in here directly, and + //doing a direct modification of the depMaps array + //would affect that config. + this.depMaps = depMaps && depMaps.slice(0); + + this.errback = errback; + + //Indicate this module has be initialized + this.inited = true; + + this.ignore = options.ignore; + + //Could have option to init this module in enabled mode, + //or could have been previously marked as enabled. However, + //the dependencies are not known until init is called. So + //if enabled previously, now trigger dependencies as enabled. + if (options.enabled || this.enabled) { + //Enable this module and dependencies. + //Will call this.check() + this.enable(); + } else { + this.check(); + } + }, + + defineDep: function (i, depExports) { + //Because of cycles, defined callback for a given + //export can be called more than once. + if (!this.depMatched[i]) { + this.depMatched[i] = true; + this.depCount -= 1; + this.depExports[i] = depExports; + } + }, + + fetch: function () { + if (this.fetched) { + return; + } + this.fetched = true; + + context.startTime = (new Date()).getTime(); + + var map = this.map; + + //If the manager is for a plugin managed resource, + //ask the plugin to load it now. + if (this.shim) { + context.makeRequire(this.map, { + enableBuildCallback: true + })(this.shim.deps || [], bind(this, function () { + return map.prefix ? this.callPlugin() : this.load(); + })); + } else { + //Regular dependency. + return map.prefix ? this.callPlugin() : this.load(); + } + }, + + load: function () { + var url = this.map.url; + + //Regular dependency. + if (!urlFetched[url]) { + urlFetched[url] = true; + context.load(this.map.id, url); + } + }, + + /** + * Checks if the module is ready to define itself, and if so, + * define it. + */ + check: function () { + if (!this.enabled || this.enabling) { + return; + } + + var err, cjsModule, + id = this.map.id, + depExports = this.depExports, + exports = this.exports, + factory = this.factory; + + if (!this.inited) { + this.fetch(); + } else if (this.error) { + this.emit('error', this.error); + } else if (!this.defining) { + //The factory could trigger another require call + //that would result in checking this module to + //define itself again. If already in the process + //of doing that, skip this work. + this.defining = true; + + if (this.depCount < 1 && !this.defined) { + if (isFunction(factory)) { + //If there is an error listener, favor passing + //to that instead of throwing an error. However, + //only do it for define()'d modules. require + //errbacks should not be called for failures in + //their callbacks (#699). However if a global + //onError is set, use that. + if ((this.events.error && this.map.isDefine) || + req.onError !== defaultOnError) { + try { + exports = context.execCb(id, factory, depExports, exports); + } catch (e) { + err = e; + } + } else { + exports = context.execCb(id, factory, depExports, exports); + } + + // Favor return value over exports. If node/cjs in play, + // then will not have a return value anyway. Favor + // module.exports assignment over exports object. + if (this.map.isDefine && exports === undefined) { + cjsModule = this.module; + if (cjsModule) { + exports = cjsModule.exports; + } else if (this.usingExports) { + //exports already set the defined value. + exports = this.exports; + } + } + + if (err) { + err.requireMap = this.map; + err.requireModules = this.map.isDefine ? [this.map.id] : null; + err.requireType = this.map.isDefine ? 'define' : 'require'; + return onError((this.error = err)); + } + + } else { + //Just a literal value + exports = factory; + } + + this.exports = exports; + + if (this.map.isDefine && !this.ignore) { + defined[id] = exports; + + if (req.onResourceLoad) { + req.onResourceLoad(context, this.map, this.depMaps); + } + } + + //Clean up + cleanRegistry(id); + + this.defined = true; + } + + //Finished the define stage. Allow calling check again + //to allow define notifications below in the case of a + //cycle. + this.defining = false; + + if (this.defined && !this.defineEmitted) { + this.defineEmitted = true; + this.emit('defined', this.exports); + this.defineEmitComplete = true; + } + + } + }, + + callPlugin: function () { + var map = this.map, + id = map.id, + //Map already normalized the prefix. + pluginMap = makeModuleMap(map.prefix); + + //Mark this as a dependency for this plugin, so it + //can be traced for cycles. + this.depMaps.push(pluginMap); + + on(pluginMap, 'defined', bind(this, function (plugin) { + var load, normalizedMap, normalizedMod, + bundleId = getOwn(bundlesMap, this.map.id), + name = this.map.name, + parentName = this.map.parentMap ? this.map.parentMap.name : null, + localRequire = context.makeRequire(map.parentMap, { + enableBuildCallback: true + }); + + //If current map is not normalized, wait for that + //normalized name to load instead of continuing. + if (this.map.unnormalized) { + //Normalize the ID if the plugin allows it. + if (plugin.normalize) { + name = plugin.normalize(name, function (name) { + return normalize(name, parentName, true); + }) || ''; + } + + //prefix and name should already be normalized, no need + //for applying map config again either. + normalizedMap = makeModuleMap(map.prefix + '!' + name, + this.map.parentMap); + on(normalizedMap, + 'defined', bind(this, function (value) { + this.init([], function () { return value; }, null, { + enabled: true, + ignore: true + }); + })); + + normalizedMod = getOwn(registry, normalizedMap.id); + if (normalizedMod) { + //Mark this as a dependency for this plugin, so it + //can be traced for cycles. + this.depMaps.push(normalizedMap); + + if (this.events.error) { + normalizedMod.on('error', bind(this, function (err) { + this.emit('error', err); + })); + } + normalizedMod.enable(); + } + + return; + } + + //If a paths config, then just load that file instead to + //resolve the plugin, as it is built into that paths layer. + if (bundleId) { + this.map.url = context.nameToUrl(bundleId); + this.load(); + return; + } + + load = bind(this, function (value) { + this.init([], function () { return value; }, null, { + enabled: true + }); + }); + + load.error = bind(this, function (err) { + this.inited = true; + this.error = err; + err.requireModules = [id]; + + //Remove temp unnormalized modules for this module, + //since they will never be resolved otherwise now. + eachProp(registry, function (mod) { + if (mod.map.id.indexOf(id + '_unnormalized') === 0) { + cleanRegistry(mod.map.id); + } + }); + + onError(err); + }); + + //Allow plugins to load other code without having to know the + //context or how to 'complete' the load. + load.fromText = bind(this, function (text, textAlt) { + /*jslint evil: true */ + var moduleName = map.name, + moduleMap = makeModuleMap(moduleName), + hasInteractive = useInteractive; + + //As of 2.1.0, support just passing the text, to reinforce + //fromText only being called once per resource. Still + //support old style of passing moduleName but discard + //that moduleName in favor of the internal ref. + if (textAlt) { + text = textAlt; + } + + //Turn off interactive script matching for IE for any define + //calls in the text, then turn it back on at the end. + if (hasInteractive) { + useInteractive = false; + } + + //Prime the system by creating a module instance for + //it. + getModule(moduleMap); + + //Transfer any config to this other module. + if (hasProp(config.config, id)) { + config.config[moduleName] = config.config[id]; + } + + try { + req.exec(text); + } catch (e) { + return onError(makeError('fromtexteval', + 'fromText eval for ' + id + + ' failed: ' + e, + e, + [id])); + } + + if (hasInteractive) { + useInteractive = true; + } + + //Mark this as a dependency for the plugin + //resource + this.depMaps.push(moduleMap); + + //Support anonymous modules. + context.completeLoad(moduleName); + + //Bind the value of that module to the value for this + //resource ID. + localRequire([moduleName], load); + }); + + //Use parentName here since the plugin's name is not reliable, + //could be some weird string with no path that actually wants to + //reference the parentName's path. + plugin.load(map.name, localRequire, load, config); + })); + + context.enable(pluginMap, this); + this.pluginMaps[pluginMap.id] = pluginMap; + }, + + enable: function () { + enabledRegistry[this.map.id] = this; + this.enabled = true; + + //Set flag mentioning that the module is enabling, + //so that immediate calls to the defined callbacks + //for dependencies do not trigger inadvertent load + //with the depCount still being zero. + this.enabling = true; + + //Enable each dependency + each(this.depMaps, bind(this, function (depMap, i) { + var id, mod, handler; + + if (typeof depMap === 'string') { + //Dependency needs to be converted to a depMap + //and wired up to this module. + depMap = makeModuleMap(depMap, + (this.map.isDefine ? this.map : this.map.parentMap), + false, + !this.skipMap); + this.depMaps[i] = depMap; + + handler = getOwn(handlers, depMap.id); + + if (handler) { + this.depExports[i] = handler(this); + return; + } + + this.depCount += 1; + + on(depMap, 'defined', bind(this, function (depExports) { + this.defineDep(i, depExports); + this.check(); + })); + + if (this.errback) { + on(depMap, 'error', bind(this, this.errback)); + } + } + + id = depMap.id; + mod = registry[id]; + + //Skip special modules like 'require', 'exports', 'module' + //Also, don't call enable if it is already enabled, + //important in circular dependency cases. + if (!hasProp(handlers, id) && mod && !mod.enabled) { + context.enable(depMap, this); + } + })); + + //Enable each plugin that is used in + //a dependency + eachProp(this.pluginMaps, bind(this, function (pluginMap) { + var mod = getOwn(registry, pluginMap.id); + if (mod && !mod.enabled) { + context.enable(pluginMap, this); + } + })); + + this.enabling = false; + + this.check(); + }, + + on: function (name, cb) { + var cbs = this.events[name]; + if (!cbs) { + cbs = this.events[name] = []; + } + cbs.push(cb); + }, + + emit: function (name, evt) { + each(this.events[name], function (cb) { + cb(evt); + }); + if (name === 'error') { + //Now that the error handler was triggered, remove + //the listeners, since this broken Module instance + //can stay around for a while in the registry. + delete this.events[name]; + } + } + }; + + function callGetModule(args) { + //Skip modules already defined. + if (!hasProp(defined, args[0])) { + getModule(makeModuleMap(args[0], null, true)).init(args[1], args[2]); + } + } + + function removeListener(node, func, name, ieName) { + //Favor detachEvent because of IE9 + //issue, see attachEvent/addEventListener comment elsewhere + //in this file. + if (node.detachEvent && !isOpera) { + //Probably IE. If not it will throw an error, which will be + //useful to know. + if (ieName) { + node.detachEvent(ieName, func); + } + } else { + node.removeEventListener(name, func, false); + } + } + + /** + * Given an event from a script node, get the requirejs info from it, + * and then removes the event listeners on the node. + * @param {Event} evt + * @returns {Object} + */ + function getScriptData(evt) { + //Using currentTarget instead of target for Firefox 2.0's sake. Not + //all old browsers will be supported, but this one was easy enough + //to support and still makes sense. + var node = evt.currentTarget || evt.srcElement; + + //Remove the listeners once here. + removeListener(node, context.onScriptLoad, 'load', 'onreadystatechange'); + removeListener(node, context.onScriptError, 'error'); + + return { + node: node, + id: node && node.getAttribute('data-requiremodule') + }; + } + + function intakeDefines() { + var args; + + //Any defined modules in the global queue, intake them now. + takeGlobalQueue(); + + //Make sure any remaining defQueue items get properly processed. + while (defQueue.length) { + args = defQueue.shift(); + if (args[0] === null) { + return onError(makeError('mismatch', 'Mismatched anonymous define() module: ' + args[args.length - 1])); + } else { + //args are id, deps, factory. Should be normalized by the + //define() function. + callGetModule(args); + } + } + } + + context = { + config: config, + contextName: contextName, + registry: registry, + defined: defined, + urlFetched: urlFetched, + defQueue: defQueue, + Module: Module, + makeModuleMap: makeModuleMap, + nextTick: req.nextTick, + onError: onError, + + /** + * Set a configuration for the context. + * @param {Object} cfg config object to integrate. + */ + configure: function (cfg) { + //Make sure the baseUrl ends in a slash. + if (cfg.baseUrl) { + if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== '/') { + cfg.baseUrl += '/'; + } + } + + //Save off the paths since they require special processing, + //they are additive. + var shim = config.shim, + objs = { + paths: true, + bundles: true, + config: true, + map: true + }; + + eachProp(cfg, function (value, prop) { + if (objs[prop]) { + if (!config[prop]) { + config[prop] = {}; + } + mixin(config[prop], value, true, true); + } else { + config[prop] = value; + } + }); + + //Reverse map the bundles + if (cfg.bundles) { + eachProp(cfg.bundles, function (value, prop) { + each(value, function (v) { + if (v !== prop) { + bundlesMap[v] = prop; + } + }); + }); + } + + //Merge shim + if (cfg.shim) { + eachProp(cfg.shim, function (value, id) { + //Normalize the structure + if (isArray(value)) { + value = { + deps: value + }; + } + if ((value.exports || value.init) && !value.exportsFn) { + value.exportsFn = context.makeShimExports(value); + } + shim[id] = value; + }); + config.shim = shim; + } + + //Adjust packages if necessary. + if (cfg.packages) { + each(cfg.packages, function (pkgObj) { + var location, name; + + pkgObj = typeof pkgObj === 'string' ? { name: pkgObj } : pkgObj; + + name = pkgObj.name; + location = pkgObj.location; + if (location) { + config.paths[name] = pkgObj.location; + } + + //Save pointer to main module ID for pkg name. + //Remove leading dot in main, so main paths are normalized, + //and remove any trailing .js, since different package + //envs have different conventions: some use a module name, + //some use a file name. + config.pkgs[name] = pkgObj.name + '/' + (pkgObj.main || 'main') + .replace(currDirRegExp, '') + .replace(jsSuffixRegExp, ''); + }); + } + + //If there are any "waiting to execute" modules in the registry, + //update the maps for them, since their info, like URLs to load, + //may have changed. + eachProp(registry, function (mod, id) { + //If module already has init called, since it is too + //late to modify them, and ignore unnormalized ones + //since they are transient. + if (!mod.inited && !mod.map.unnormalized) { + mod.map = makeModuleMap(id); + } + }); + + //If a deps array or a config callback is specified, then call + //require with those args. This is useful when require is defined as a + //config object before require.js is loaded. + if (cfg.deps || cfg.callback) { + context.require(cfg.deps || [], cfg.callback); + } + }, + + makeShimExports: function (value) { + function fn() { + var ret; + if (value.init) { + ret = value.init.apply(global, arguments); + } + return ret || (value.exports && getGlobal(value.exports)); + } + return fn; + }, + + makeRequire: function (relMap, options) { + options = options || {}; + + function localRequire(deps, callback, errback) { + var id, map, requireMod; + + if (options.enableBuildCallback && callback && isFunction(callback)) { + callback.__requireJsBuild = true; + } + + if (typeof deps === 'string') { + if (isFunction(callback)) { + //Invalid call + return onError(makeError('requireargs', 'Invalid require call'), errback); + } + + //If require|exports|module are requested, get the + //value for them from the special handlers. Caveat: + //this only works while module is being defined. + if (relMap && hasProp(handlers, deps)) { + return handlers[deps](registry[relMap.id]); + } + + //Synchronous access to one module. If require.get is + //available (as in the Node adapter), prefer that. + if (req.get) { + return req.get(context, deps, relMap, localRequire); + } + + //Normalize module name, if it contains . or .. + map = makeModuleMap(deps, relMap, false, true); + id = map.id; + + if (!hasProp(defined, id)) { + return onError(makeError('notloaded', 'Module name "' + + id + + '" has not been loaded yet for context: ' + + contextName + + (relMap ? '' : '. Use require([])'))); + } + return defined[id]; + } + + //Grab defines waiting in the global queue. + intakeDefines(); + + //Mark all the dependencies as needing to be loaded. + context.nextTick(function () { + //Some defines could have been added since the + //require call, collect them. + intakeDefines(); + + requireMod = getModule(makeModuleMap(null, relMap)); + + //Store if map config should be applied to this require + //call for dependencies. + requireMod.skipMap = options.skipMap; + + requireMod.init(deps, callback, errback, { + enabled: true + }); + + checkLoaded(); + }); + + return localRequire; + } + + mixin(localRequire, { + isBrowser: isBrowser, + + /** + * Converts a module name + .extension into an URL path. + * *Requires* the use of a module name. It does not support using + * plain URLs like nameToUrl. + */ + toUrl: function (moduleNamePlusExt) { + var ext, + index = moduleNamePlusExt.lastIndexOf('.'), + segment = moduleNamePlusExt.split('/')[0], + isRelative = segment === '.' || segment === '..'; + + //Have a file extension alias, and it is not the + //dots from a relative path. + if (index !== -1 && (!isRelative || index > 1)) { + ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length); + moduleNamePlusExt = moduleNamePlusExt.substring(0, index); + } + + return context.nameToUrl(normalize(moduleNamePlusExt, + relMap && relMap.id, true), ext, true); + }, + + defined: function (id) { + return hasProp(defined, makeModuleMap(id, relMap, false, true).id); + }, + + specified: function (id) { + id = makeModuleMap(id, relMap, false, true).id; + return hasProp(defined, id) || hasProp(registry, id); + } + }); + + //Only allow undef on top level require calls + if (!relMap) { + localRequire.undef = function (id) { + //Bind any waiting define() calls to this context, + //fix for #408 + takeGlobalQueue(); + + var map = makeModuleMap(id, relMap, true), + mod = getOwn(registry, id); + + removeScript(id); + + delete defined[id]; + delete urlFetched[map.url]; + delete undefEvents[id]; + + //Clean queued defines too. Go backwards + //in array so that the splices do not + //mess up the iteration. + eachReverse(defQueue, function(args, i) { + if(args[0] === id) { + defQueue.splice(i, 1); + } + }); + + if (mod) { + //Hold on to listeners in case the + //module will be attempted to be reloaded + //using a different config. + if (mod.events.defined) { + undefEvents[id] = mod.events; + } + + cleanRegistry(id); + } + }; + } + + return localRequire; + }, + + /** + * Called to enable a module if it is still in the registry + * awaiting enablement. A second arg, parent, the parent module, + * is passed in for context, when this method is overriden by + * the optimizer. Not shown here to keep code compact. + */ + enable: function (depMap) { + var mod = getOwn(registry, depMap.id); + if (mod) { + getModule(depMap).enable(); + } + }, + + /** + * Internal method used by environment adapters to complete a load event. + * A load event could be a script load or just a load pass from a synchronous + * load call. + * @param {String} moduleName the name of the module to potentially complete. + */ + completeLoad: function (moduleName) { + var found, args, mod, + shim = getOwn(config.shim, moduleName) || {}, + shExports = shim.exports; + + takeGlobalQueue(); + + while (defQueue.length) { + args = defQueue.shift(); + if (args[0] === null) { + args[0] = moduleName; + //If already found an anonymous module and bound it + //to this name, then this is some other anon module + //waiting for its completeLoad to fire. + if (found) { + break; + } + found = true; + } else if (args[0] === moduleName) { + //Found matching define call for this script! + found = true; + } + + callGetModule(args); + } + + //Do this after the cycle of callGetModule in case the result + //of those calls/init calls changes the registry. + mod = getOwn(registry, moduleName); + + if (!found && !hasProp(defined, moduleName) && mod && !mod.inited) { + if (config.enforceDefine && (!shExports || !getGlobal(shExports))) { + if (hasPathFallback(moduleName)) { + return; + } else { + return onError(makeError('nodefine', + 'No define call for ' + moduleName, + null, + [moduleName])); + } + } else { + //A script that does not call define(), so just simulate + //the call for it. + callGetModule([moduleName, (shim.deps || []), shim.exportsFn]); + } + } + + checkLoaded(); + }, + + /** + * Converts a module name to a file path. Supports cases where + * moduleName may actually be just an URL. + * Note that it **does not** call normalize on the moduleName, + * it is assumed to have already been normalized. This is an + * internal API, not a public one. Use toUrl for the public API. + */ + nameToUrl: function (moduleName, ext, skipExt) { + var paths, syms, i, parentModule, url, + parentPath, bundleId, + pkgMain = getOwn(config.pkgs, moduleName); + + if (pkgMain) { + moduleName = pkgMain; + } + + bundleId = getOwn(bundlesMap, moduleName); + + if (bundleId) { + return context.nameToUrl(bundleId, ext, skipExt); + } + + //If a colon is in the URL, it indicates a protocol is used and it is just + //an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?) + //or ends with .js, then assume the user meant to use an url and not a module id. + //The slash is important for protocol-less URLs as well as full paths. + if (req.jsExtRegExp.test(moduleName)) { + //Just a plain path, not module name lookup, so just return it. + //Add extension if it is included. This is a bit wonky, only non-.js things pass + //an extension, this method probably needs to be reworked. + url = moduleName + (ext || ''); + } else { + //A module that needs to be converted to a path. + paths = config.paths; + + syms = moduleName.split('/'); + //For each module name segment, see if there is a path + //registered for it. Start with most specific name + //and work up from it. + for (i = syms.length; i > 0; i -= 1) { + parentModule = syms.slice(0, i).join('/'); + + parentPath = getOwn(paths, parentModule); + if (parentPath) { + //If an array, it means there are a few choices, + //Choose the one that is desired + if (isArray(parentPath)) { + parentPath = parentPath[0]; + } + syms.splice(0, i, parentPath); + break; + } + } + + //Join the path parts together, then figure out if baseUrl is needed. + url = syms.join('/'); + url += (ext || (/^data\:|\?/.test(url) || skipExt ? '' : '.js')); + url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url; + } + + return config.urlArgs ? url + + ((url.indexOf('?') === -1 ? '?' : '&') + + config.urlArgs) : url; + }, + + //Delegates to req.load. Broken out as a separate function to + //allow overriding in the optimizer. + load: function (id, url) { + req.load(context, id, url); + }, + + /** + * Executes a module callback function. Broken out as a separate function + * solely to allow the build system to sequence the files in the built + * layer in the right sequence. + * + * @private + */ + execCb: function (name, callback, args, exports) { + return callback.apply(exports, args); + }, + + /** + * callback for script loads, used to check status of loading. + * + * @param {Event} evt the event from the browser for the script + * that was loaded. + */ + onScriptLoad: function (evt) { + //Using currentTarget instead of target for Firefox 2.0's sake. Not + //all old browsers will be supported, but this one was easy enough + //to support and still makes sense. + if (evt.type === 'load' || + (readyRegExp.test((evt.currentTarget || evt.srcElement).readyState))) { + //Reset interactive script so a script node is not held onto for + //to long. + interactiveScript = null; + + //Pull out the name of the module and the context. + var data = getScriptData(evt); + context.completeLoad(data.id); + } + }, + + /** + * Callback for script errors. + */ + onScriptError: function (evt) { + var data = getScriptData(evt); + if (!hasPathFallback(data.id)) { + return onError(makeError('scripterror', 'Script error for: ' + data.id, evt, [data.id])); + } + } + }; + + context.require = context.makeRequire(); + return context; + } + + /** + * Main entry point. + * + * If the only argument to require is a string, then the module that + * is represented by that string is fetched for the appropriate context. + * + * If the first argument is an array, then it will be treated as an array + * of dependency string names to fetch. An optional function callback can + * be specified to execute when all of those dependencies are available. + * + * Make a local req variable to help Caja compliance (it assumes things + * on a require that are not standardized), and to give a short + * name for minification/local scope use. + */ + req = requirejs = function (deps, callback, errback, optional) { + + //Find the right context, use default + var context, config, + contextName = defContextName; + + // Determine if have config object in the call. + if (!isArray(deps) && typeof deps !== 'string') { + // deps is a config object + config = deps; + if (isArray(callback)) { + // Adjust args if there are dependencies + deps = callback; + callback = errback; + errback = optional; + } else { + deps = []; + } + } + + if (config && config.context) { + contextName = config.context; + } + + context = getOwn(contexts, contextName); + if (!context) { + context = contexts[contextName] = req.s.newContext(contextName); + } + + if (config) { + context.configure(config); + } + + return context.require(deps, callback, errback); + }; + + /** + * Support require.config() to make it easier to cooperate with other + * AMD loaders on globally agreed names. + */ + req.config = function (config) { + return req(config); + }; + + /** + * Execute something after the current tick + * of the event loop. Override for other envs + * that have a better solution than setTimeout. + * @param {Function} fn function to execute later. + */ + req.nextTick = typeof setTimeout !== 'undefined' ? function (fn) { + setTimeout(fn, 4); + } : function (fn) { fn(); }; + + /** + * Export require as a global, but only if it does not already exist. + */ + if (!require) { + require = req; + } + + req.version = version; + + //Used to filter out dependencies that are already paths. + req.jsExtRegExp = /^\/|:|\?|\.js$/; + req.isBrowser = isBrowser; + s = req.s = { + contexts: contexts, + newContext: newContext + }; + + //Create default context. + req({}); + + //Exports some context-sensitive methods on global require. + each([ + 'toUrl', + 'undef', + 'defined', + 'specified' + ], function (prop) { + //Reference from contexts instead of early binding to default context, + //so that during builds, the latest instance of the default context + //with its config gets used. + req[prop] = function () { + var ctx = contexts[defContextName]; + return ctx.require[prop].apply(ctx, arguments); + }; + }); + + if (isBrowser) { + head = s.head = document.getElementsByTagName('head')[0]; + //If BASE tag is in play, using appendChild is a problem for IE6. + //When that browser dies, this can be removed. Details in this jQuery bug: + //http://dev.jquery.com/ticket/2709 + baseElement = document.getElementsByTagName('base')[0]; + if (baseElement) { + head = s.head = baseElement.parentNode; + } + } + + /** + * Any errors that require explicitly generates will be passed to this + * function. Intercept/override it if you want custom error handling. + * @param {Error} err the error object. + */ + req.onError = defaultOnError; + + /** + * Creates the node for the load command. Only used in browser envs. + */ + req.createNode = function (config, moduleName, url) { + var node = config.xhtml ? + document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') : + document.createElement('script'); + node.type = config.scriptType || 'text/javascript'; + node.charset = 'utf-8'; + node.async = true; + return node; + }; + + /** + * Does the request to load a module for the browser case. + * Make this a separate function to allow other environments + * to override it. + * + * @param {Object} context the require context to find state. + * @param {String} moduleName the name of the module. + * @param {Object} url the URL to the module. + */ + req.load = function (context, moduleName, url) { + var config = (context && context.config) || {}, + node; + if (isBrowser) { + //In the browser so use a script tag + node = req.createNode(config, moduleName, url); + + node.setAttribute('data-requirecontext', context.contextName); + node.setAttribute('data-requiremodule', moduleName); + + //Set up load listener. Test attachEvent first because IE9 has + //a subtle issue in its addEventListener and script onload firings + //that do not match the behavior of all other browsers with + //addEventListener support, which fire the onload event for a + //script right after the script execution. See: + //https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution + //UNFORTUNATELY Opera implements attachEvent but does not follow the script + //script execution mode. + if (node.attachEvent && + //Check if node.attachEvent is artificially added by custom script or + //natively supported by browser + //read https://github.com/jrburke/requirejs/issues/187 + //if we can NOT find [native code] then it must NOT natively supported. + //in IE8, node.attachEvent does not have toString() + //Note the test for "[native code" with no closing brace, see: + //https://github.com/jrburke/requirejs/issues/273 + !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) && + !isOpera) { + //Probably IE. IE (at least 6-8) do not fire + //script onload right after executing the script, so + //we cannot tie the anonymous define call to a name. + //However, IE reports the script as being in 'interactive' + //readyState at the time of the define call. + useInteractive = true; + + node.attachEvent('onreadystatechange', context.onScriptLoad); + //It would be great to add an error handler here to catch + //404s in IE9+. However, onreadystatechange will fire before + //the error handler, so that does not help. If addEventListener + //is used, then IE will fire error before load, but we cannot + //use that pathway given the connect.microsoft.com issue + //mentioned above about not doing the 'script execute, + //then fire the script load event listener before execute + //next script' that other browsers do. + //Best hope: IE10 fixes the issues, + //and then destroys all installs of IE 6-9. + //node.attachEvent('onerror', context.onScriptError); + } else { + node.addEventListener('load', context.onScriptLoad, false); + node.addEventListener('error', context.onScriptError, false); + } + node.src = url; + + //For some cache cases in IE 6-8, the script executes before the end + //of the appendChild execution, so to tie an anonymous define + //call to the module name (which is stored on the node), hold on + //to a reference to this node, but clear after the DOM insertion. + currentlyAddingScript = node; + if (baseElement) { + head.insertBefore(node, baseElement); + } else { + head.appendChild(node); + } + currentlyAddingScript = null; + + return node; + } else if (isWebWorker) { + try { + //In a web worker, use importScripts. This is not a very + //efficient use of importScripts, importScripts will block until + //its script is downloaded and evaluated. However, if web workers + //are in play, the expectation that a build has been done so that + //only one script needs to be loaded anyway. This may need to be + //reevaluated if other use cases become common. + importScripts(url); + + //Account for anonymous modules + context.completeLoad(moduleName); + } catch (e) { + context.onError(makeError('importscripts', + 'importScripts failed for ' + + moduleName + ' at ' + url, + e, + [moduleName])); + } + } + }; + + function getInteractiveScript() { + if (interactiveScript && interactiveScript.readyState === 'interactive') { + return interactiveScript; + } + + eachReverse(scripts(), function (script) { + if (script.readyState === 'interactive') { + return (interactiveScript = script); + } + }); + return interactiveScript; + } + + //Look for a data-main script attribute, which could also adjust the baseUrl. + if (isBrowser && !cfg.skipDataMain) { + //Figure out baseUrl. Get it from the script tag with require.js in it. + eachReverse(scripts(), function (script) { + //Set the 'head' where we can append children by + //using the script's parent. + if (!head) { + head = script.parentNode; + } + + //Look for a data-main attribute to set main script for the page + //to load. If it is there, the path to data main becomes the + //baseUrl, if it is not already set. + dataMain = script.getAttribute('data-main'); + if (dataMain) { + //Preserve dataMain in case it is a path (i.e. contains '?') + mainScript = dataMain; + + //Set final baseUrl if there is not already an explicit one. + if (!cfg.baseUrl) { + //Pull off the directory of data-main for use as the + //baseUrl. + src = mainScript.split('/'); + mainScript = src.pop(); + subPath = src.length ? src.join('/') + '/' : './'; + + cfg.baseUrl = subPath; + } + + //Strip off any trailing .js since mainScript is now + //like a module name. + mainScript = mainScript.replace(jsSuffixRegExp, ''); + + //If mainScript is still a path, fall back to dataMain + if (req.jsExtRegExp.test(mainScript)) { + mainScript = dataMain; + } + + //Put the data-main script in the files to load. + cfg.deps = cfg.deps ? cfg.deps.concat(mainScript) : [mainScript]; + + return true; + } + }); + } + + /** + * The function that handles definitions of modules. Differs from + * require() in that a string for the module should be the first argument, + * and the function to execute after dependencies are loaded should + * return a value to define the module corresponding to the first argument's + * name. + */ + define = function (name, deps, callback) { + var node, context; + + //Allow for anonymous modules + if (typeof name !== 'string') { + //Adjust args appropriately + callback = deps; + deps = name; + name = null; + } + + //This module may not have dependencies + if (!isArray(deps)) { + callback = deps; + deps = null; + } + + //If no name, and callback is a function, then figure out if it a + //CommonJS thing with dependencies. + if (!deps && isFunction(callback)) { + deps = []; + //Remove comments from the callback string, + //look for require calls, and pull them into the dependencies, + //but only if there are function args. + if (callback.length) { + callback + .toString() + .replace(commentRegExp, '') + .replace(cjsRequireRegExp, function (match, dep) { + deps.push(dep); + }); + + //May be a CommonJS thing even without require calls, but still + //could use exports, and module. Avoid doing exports and module + //work though if it just needs require. + //REQUIRES the function to expect the CommonJS variables in the + //order listed below. + deps = (callback.length === 1 ? ['require'] : ['require', 'exports', 'module']).concat(deps); + } + } + + //If in IE 6-8 and hit an anonymous define() call, do the interactive + //work. + if (useInteractive) { + node = currentlyAddingScript || getInteractiveScript(); + if (node) { + if (!name) { + name = node.getAttribute('data-requiremodule'); + } + context = contexts[node.getAttribute('data-requirecontext')]; + } + } + + //Always save off evaluating the def call until the script onload handler. + //This allows multiple modules to be in a file without prematurely + //tracing dependencies, and allows for anonymous module support, + //where the module name is not known until the script onload event + //occurs. If no context, use the global queue, and get it processed + //in the onscript load callback. + (context ? context.defQueue : globalDefQueue).push([name, deps, callback]); + }; + + define.amd = { + jQuery: true + }; + + + /** + * Executes the text. Normally just uses eval, but can be modified + * to use a better, environment-specific call. Only used for transpiling + * loader plugins, not for plain JS modules. + * @param {String} text the text to execute/evaluate. + */ + req.exec = function (text) { + /*jslint evil: true */ + return eval(text); + }; + + //Set up with config info. + req(cfg); +}(this)); +define("requireLib", function(){}); + +/*! + * jQuery JavaScript Library v2.1.0 + * http://jquery.com/ + * + * Includes Sizzle.js + * http://sizzlejs.com/ + * + * Copyright 2005, 2014 jQuery Foundation, Inc. and other contributors + * Released under the MIT license + * http://jquery.org/license + * + * Date: 2014-01-23T21:10Z + */ + +(function( global, factory ) { + + if ( typeof module === "object" && typeof module.exports === "object" ) { + // For CommonJS and CommonJS-like environments where a proper window is present, + // execute the factory and get jQuery + // For environments that do not inherently posses a window with a document + // (such as Node.js), expose a jQuery-making factory as module.exports + // This accentuates the need for the creation of a real window + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +}(typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Can't do this because several apps including ASP.NET trace +// the stack via arguments.caller.callee and Firefox dies if +// you try to trace through "use strict" call chains. (#13335) +// Support: Firefox 18+ +// + +var arr = []; + +var slice = arr.slice; + +var concat = arr.concat; + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var trim = "".trim; + +var support = {}; + + + +var + // Use the correct document accordingly with window argument (sandbox) + document = window.document, + + version = "2.1.0", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }, + + // Matches dashed string for camelizing + rmsPrefix = /^-ms-/, + rdashAlpha = /-([\da-z])/gi, + + // Used by jQuery.camelCase as callback to replace() + fcamelCase = function( all, letter ) { + return letter.toUpperCase(); + }; + +jQuery.fn = jQuery.prototype = { + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // Start with an empty selector + selector: "", + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + return num != null ? + + // Return a 'clean' array + ( num < 0 ? this[ num + this.length ] : this[ num ] ) : + + // Return just the object + slice.call( this ); + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + ret.context = this.context; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + // (You can seed the arguments with an array of args, but this is + // only used internally.) + each: function( callback, args ) { + return jQuery.each( this, callback, args ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map(this, function( elem, i ) { + return callback.call( elem, i, elem ); + })); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[j] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(null); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[0] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !jQuery.isFunction(target) ) { + target = {}; + } + + // extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + // Only deal with non-null/undefined values + if ( (options = arguments[ i ]) != null ) { + // Extend the base object + for ( name in options ) { + src = target[ name ]; + copy = options[ name ]; + + // Prevent never-ending loop + if ( target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) { + if ( copyIsArray ) { + copyIsArray = false; + clone = src && jQuery.isArray(src) ? src : []; + + } else { + clone = src && jQuery.isPlainObject(src) ? src : {}; + } + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend({ + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + // See test/unit/core.js for details concerning isFunction. + // Since version 1.3, DOM methods and functions like alert + // aren't supported. They return false on IE (#2968). + isFunction: function( obj ) { + return jQuery.type(obj) === "function"; + }, + + isArray: Array.isArray, + + isWindow: function( obj ) { + return obj != null && obj === obj.window; + }, + + isNumeric: function( obj ) { + // parseFloat NaNs numeric-cast false positives (null|true|false|"") + // ...but misinterprets leading-number strings, particularly hex literals ("0x...") + // subtraction forces infinities to NaN + return obj - parseFloat( obj ) >= 0; + }, + + isPlainObject: function( obj ) { + // Not plain objects: + // - Any object or value whose internal [[Class]] property is not "[object Object]" + // - DOM nodes + // - window + if ( jQuery.type( obj ) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) { + return false; + } + + // Support: Firefox <20 + // The try/catch suppresses exceptions thrown when attempting to access + // the "constructor" property of certain host objects, ie. |window.location| + // https://bugzilla.mozilla.org/show_bug.cgi?id=814622 + try { + if ( obj.constructor && + !hasOwn.call( obj.constructor.prototype, "isPrototypeOf" ) ) { + return false; + } + } catch ( e ) { + return false; + } + + // If the function hasn't returned already, we're confident that + // |obj| is a plain object, created by {} or constructed with new Object + return true; + }, + + isEmptyObject: function( obj ) { + var name; + for ( name in obj ) { + return false; + } + return true; + }, + + type: function( obj ) { + if ( obj == null ) { + return obj + ""; + } + // Support: Android < 4.0, iOS < 6 (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call(obj) ] || "object" : + typeof obj; + }, + + // Evaluates a script in a global context + globalEval: function( code ) { + var script, + indirect = eval; + + code = jQuery.trim( code ); + + if ( code ) { + // If the code includes a valid, prologue position + // strict mode pragma, execute code by injecting a + // script tag into the document. + if ( code.indexOf("use strict") === 1 ) { + script = document.createElement("script"); + script.text = code; + document.head.appendChild( script ).parentNode.removeChild( script ); + } else { + // Otherwise, avoid the DOM node creation, insertion + // and removal by using an indirect global eval + indirect( code ); + } + } + }, + + // Convert dashed to camelCase; used by the css and data modules + // Microsoft forgot to hump their vendor prefix (#9572) + camelCase: function( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); + }, + + nodeName: function( elem, name ) { + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + }, + + // args is for internal usage only + each: function( obj, callback, args ) { + var value, + i = 0, + length = obj.length, + isArray = isArraylike( obj ); + + if ( args ) { + if ( isArray ) { + for ( ; i < length; i++ ) { + value = callback.apply( obj[ i ], args ); + + if ( value === false ) { + break; + } + } + } else { + for ( i in obj ) { + value = callback.apply( obj[ i ], args ); + + if ( value === false ) { + break; + } + } + } + + // A special, fast, case for the most common use of each + } else { + if ( isArray ) { + for ( ; i < length; i++ ) { + value = callback.call( obj[ i ], i, obj[ i ] ); + + if ( value === false ) { + break; + } + } + } else { + for ( i in obj ) { + value = callback.call( obj[ i ], i, obj[ i ] ); + + if ( value === false ) { + break; + } + } + } + } + + return obj; + }, + + trim: function( text ) { + return text == null ? "" : trim.call( text ); + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArraylike( Object(arr) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var value, + i = 0, + length = elems.length, + isArray = isArraylike( elems ), + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArray ) { + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return concat.apply( [], ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // Bind a function to a context, optionally partially applying any + // arguments. + proxy: function( fn, context ) { + var tmp, args, proxy; + + if ( typeof context === "string" ) { + tmp = fn[ context ]; + context = fn; + fn = tmp; + } + + // Quick check to determine if target is callable, in the spec + // this throws a TypeError, but we will just return undefined. + if ( !jQuery.isFunction( fn ) ) { + return undefined; + } + + // Simulated bind + args = slice.call( arguments, 2 ); + proxy = function() { + return fn.apply( context || this, args.concat( slice.call( arguments ) ) ); + }; + + // Set the guid of unique handler to the same of original handler, so it can be removed + proxy.guid = fn.guid = fn.guid || jQuery.guid++; + + return proxy; + }, + + now: Date.now, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +}); + +// Populate the class2type map +jQuery.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +}); + +function isArraylike( obj ) { + var length = obj.length, + type = jQuery.type( obj ); + + if ( type === "function" || jQuery.isWindow( obj ) ) { + return false; + } + + if ( obj.nodeType === 1 && length ) { + return true; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v1.10.16 + * http://sizzlejs.com/ + * + * Copyright 2013 jQuery Foundation, Inc. and other contributors + * Released under the MIT license + * http://jquery.org/license + * + * Date: 2014-01-13 + */ +(function( window ) { + +var i, + support, + Expr, + getText, + isXML, + compile, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + -(new Date()), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // General-purpose constants + strundefined = typeof undefined, + MAX_NEGATIVE = 1 << 31, + + // Instance methods + hasOwn = ({}).hasOwnProperty, + arr = [], + pop = arr.pop, + push_native = arr.push, + push = arr.push, + slice = arr.slice, + // Use a stripped-down indexOf if we can't use a native one + indexOf = arr.indexOf || function( elem ) { + var i = 0, + len = this.length; + for ( ; i < len; i++ ) { + if ( this[i] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + // http://www.w3.org/TR/css3-syntax/#characters + characterEncoding = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+", + + // Loosely modeled on CSS identifier characters + // An unquoted value should be a CSS identifier http://www.w3.org/TR/css3-selectors/#attribute-selectors + // Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier + identifier = characterEncoding.replace( "w", "w#" ), + + // Acceptable operators http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + characterEncoding + ")" + whitespace + + "*(?:([*^$|!~]?=)" + whitespace + "*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|(" + identifier + ")|)|)" + whitespace + "*\\]", + + // Prefer arguments quoted, + // then not containing pseudos/brackets, + // then attribute selectors/non-parenthetical expressions, + // then anything else + // These preferences are here to reduce the number of selectors + // needing tokenize in the PSEUDO preFilter + pseudos = ":(" + characterEncoding + ")(?:\\(((['\"])((?:\\\\.|[^\\\\])*?)\\3|((?:\\\\.|[^\\\\()[\\]]|" + attributes.replace( 3, 8 ) + ")*)|.*)\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ), + + rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + characterEncoding + ")" ), + "CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ), + "TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace + + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace + + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + + whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + rescape = /'|\\/g, + + // CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ), + funescape = function( _, escaped, escapedWhitespace ) { + var high = "0x" + escaped - 0x10000; + // NaN means non-codepoint + // Support: Firefox + // Workaround erroneous numeric interpretation of +"0x" + return high !== high || escapedWhitespace ? + escaped : + high < 0 ? + // BMP codepoint + String.fromCharCode( high + 0x10000 ) : + // Supplemental Plane codepoint (surrogate pair) + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }; + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + (arr = slice.call( preferredDoc.childNodes )), + preferredDoc.childNodes + ); + // Support: Android<4.0 + // Detect silently failing push.apply + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + push_native.apply( target, slice.call(els) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + // Can't trust NodeList.length + while ( (target[j++] = els[i++]) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var match, elem, m, nodeType, + // QSA vars + i, groups, old, nid, newContext, newSelector; + + if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) { + setDocument( context ); + } + + context = context || document; + results = results || []; + + if ( !selector || typeof selector !== "string" ) { + return results; + } + + if ( (nodeType = context.nodeType) !== 1 && nodeType !== 9 ) { + return []; + } + + if ( documentIsHTML && !seed ) { + + // Shortcuts + if ( (match = rquickExpr.exec( selector )) ) { + // Speed-up: Sizzle("#ID") + if ( (m = match[1]) ) { + if ( nodeType === 9 ) { + elem = context.getElementById( m ); + // Check parentNode to catch when Blackberry 4.6 returns + // nodes that are no longer in the document (jQuery #6963) + if ( elem && elem.parentNode ) { + // Handle the case where IE, Opera, and Webkit return items + // by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + } else { + // Context is not a document + if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) && + contains( context, elem ) && elem.id === m ) { + results.push( elem ); + return results; + } + } + + // Speed-up: Sizzle("TAG") + } else if ( match[2] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Speed-up: Sizzle(".CLASS") + } else if ( (m = match[3]) && support.getElementsByClassName && context.getElementsByClassName ) { + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // QSA path + if ( support.qsa && (!rbuggyQSA || !rbuggyQSA.test( selector )) ) { + nid = old = expando; + newContext = context; + newSelector = nodeType === 9 && selector; + + // qSA works strangely on Element-rooted queries + // We can work around this by specifying an extra ID on the root + // and working up from there (Thanks to Andrew Dupont for the technique) + // IE 8 doesn't work on object elements + if ( nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) { + groups = tokenize( selector ); + + if ( (old = context.getAttribute("id")) ) { + nid = old.replace( rescape, "\\$&" ); + } else { + context.setAttribute( "id", nid ); + } + nid = "[id='" + nid + "'] "; + + i = groups.length; + while ( i-- ) { + groups[i] = nid + toSelector( groups[i] ); + } + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || context; + newSelector = groups.join(","); + } + + if ( newSelector ) { + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch(qsaError) { + } finally { + if ( !old ) { + context.removeAttribute("id"); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {Function(string, Object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return (cache[ key + " " ] = value); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created div and expects a boolean result + */ +function assert( fn ) { + var div = document.createElement("div"); + + try { + return !!fn( div ); + } catch (e) { + return false; + } finally { + // Remove from its parent by default + if ( div.parentNode ) { + div.parentNode.removeChild( div ); + } + // release memory in IE + div = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split("|"), + i = attrs.length; + + while ( i-- ) { + Expr.attrHandle[ arr[i] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + ( ~b.sourceIndex || MAX_NEGATIVE ) - + ( ~a.sourceIndex || MAX_NEGATIVE ); + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( (cur = cur.nextSibling) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return (name === "input" || name === "button") && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction(function( argument ) { + argument = +argument; + return markFunction(function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ (j = matchIndexes[i]) ] ) { + seed[j] = !(matches[j] = seed[j]); + } + } + }); + }); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== strundefined && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + // documentElement is verified for cases where it doesn't yet exist + // (such as loading iframes in IE - #4833) + var documentElement = elem && (elem.ownerDocument || elem).documentElement; + return documentElement ? documentElement.nodeName !== "HTML" : false; +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, + doc = node ? node.ownerDocument || node : preferredDoc, + parent = doc.defaultView; + + // If no document and documentElement is available, return + if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Set our document + document = doc; + docElem = doc.documentElement; + + // Support tests + documentIsHTML = !isXML( doc ); + + // Support: IE>8 + // If iframe document is assigned to "document" variable and if iframe has been reloaded, + // IE will throw "permission denied" error when accessing "document" variable, see jQuery #13936 + // IE6-8 do not support the defaultView property so parent will be undefined + if ( parent && parent !== parent.top ) { + // IE11 does not have attachEvent, so all must suffer + if ( parent.addEventListener ) { + parent.addEventListener( "unload", function() { + setDocument(); + }, false ); + } else if ( parent.attachEvent ) { + parent.attachEvent( "onunload", function() { + setDocument(); + }); + } + } + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties (excepting IE8 booleans) + support.attributes = assert(function( div ) { + div.className = "i"; + return !div.getAttribute("className"); + }); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert(function( div ) { + div.appendChild( doc.createComment("") ); + return !div.getElementsByTagName("*").length; + }); + + // Check if getElementsByClassName can be trusted + support.getElementsByClassName = rnative.test( doc.getElementsByClassName ) && assert(function( div ) { + div.innerHTML = "<div class='a'></div><div class='a i'></div>"; + + // Support: Safari<4 + // Catch class over-caching + div.firstChild.className = "i"; + // Support: Opera<10 + // Catch gEBCN failure to find non-leading classes + return div.getElementsByClassName("i").length === 2; + }); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert(function( div ) { + docElem.appendChild( div ).id = expando; + return !doc.getElementsByName || !doc.getElementsByName( expando ).length; + }); + + // ID find and filter + if ( support.getById ) { + Expr.find["ID"] = function( id, context ) { + if ( typeof context.getElementById !== strundefined && documentIsHTML ) { + var m = context.getElementById( id ); + // Check parentNode to catch when Blackberry 4.6 returns + // nodes that are no longer in the document #6963 + return m && m.parentNode ? [m] : []; + } + }; + Expr.filter["ID"] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute("id") === attrId; + }; + }; + } else { + // Support: IE6/7 + // getElementById is not reliable as a find shortcut + delete Expr.find["ID"]; + + Expr.filter["ID"] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== strundefined && elem.getAttributeNode("id"); + return node && node.value === attrId; + }; + }; + } + + // Tag + Expr.find["TAG"] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== strundefined ) { + return context.getElementsByTagName( tag ); + } + } : + function( tag, context ) { + var elem, + tmp = [], + i = 0, + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( (elem = results[i++]) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== strundefined && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See http://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( (support.qsa = rnative.test( doc.querySelectorAll )) ) { + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert(function( div ) { + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // http://bugs.jquery.com/ticket/12359 + div.innerHTML = "<select t=''><option selected=''></option></select>"; + + // Support: IE8, Opera 10-12 + // Nothing should be selected when empty strings follow ^= or $= or *= + if ( div.querySelectorAll("[t^='']").length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !div.querySelectorAll("[selected]").length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !div.querySelectorAll(":checked").length ) { + rbuggyQSA.push(":checked"); + } + }); + + assert(function( div ) { + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = doc.createElement("input"); + input.setAttribute( "type", "hidden" ); + div.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( div.querySelectorAll("[name=d]").length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( !div.querySelectorAll(":enabled").length ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Opera 10-11 does not throw on post-comma invalid pseudos + div.querySelectorAll("*,:x"); + rbuggyQSA.push(",.*:"); + }); + } + + if ( (support.matchesSelector = rnative.test( (matches = docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector) )) ) { + + assert(function( div ) { + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( div, "div" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( div, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + }); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully does not implement inclusive descendent + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + )); + } : + function( a, b ) { + if ( b ) { + while ( (b = b.parentNode) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + (!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) { + + // Choose the first element that is related to our preferred document + if ( a === doc || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) { + return -1; + } + if ( b === doc || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + return a === doc ? -1 : + b === doc ? 1 : + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( (cur = cur.parentNode) ) { + ap.unshift( cur ); + } + cur = b; + while ( (cur = cur.parentNode) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[i] === bp[i] ) { + i++; + } + + return i ? + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[i], bp[i] ) : + + // Otherwise nodes in our document sort first + ap[i] === preferredDoc ? -1 : + bp[i] === preferredDoc ? 1 : + 0; + }; + + return doc; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + // Set document vars if needed + if ( ( elem.ownerDocument || elem ) !== document ) { + setDocument( elem ); + } + + // Make sure that attribute selectors are quoted + expr = expr.replace( rattributeQuotes, "='$1']" ); + + if ( support.matchesSelector && documentIsHTML && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch(e) {} + } + + return Sizzle( expr, document, null, [elem] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + // Set document vars if needed + if ( ( context.ownerDocument || context ) !== document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + // Set document vars if needed + if ( ( elem.ownerDocument || elem ) !== document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + (val = elem.getAttributeNode(name)) && val.specified ? + val.value : + null; +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( (elem = results[i++]) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + // If no nodeType, this is expected to be an array + while ( (node = elem[i++]) ) { + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[1] = match[1].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[3] = ( match[4] || match[5] || "" ).replace( runescape, funescape ); + + if ( match[2] === "~=" ) { + match[3] = " " + match[3] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[1] = match[1].toLowerCase(); + + if ( match[1].slice( 0, 3 ) === "nth" ) { + // nth-* requires argument + if ( !match[3] ) { + Sizzle.error( match[0] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) ); + match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" ); + + // other types prohibit arguments + } else if ( match[3] ) { + Sizzle.error( match[0] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[5] && match[2]; + + if ( matchExpr["CHILD"].test( match[0] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[3] && match[4] !== undefined ) { + match[2] = match[4]; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + // Get excess from tokenize (recursively) + (excess = tokenize( unquoted, true )) && + // advance to the next closing parenthesis + (excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) { + + // excess is a negative index + match[0] = match[0].slice( 0, excess ); + match[2] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { return true; } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + (pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) && + classCache( className, function( elem ) { + return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== strundefined && elem.getAttribute("class") || "" ); + }); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + }; + }, + + "CHILD": function( type, what, argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, context, xml ) { + var cache, outerCache, node, diff, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( (node = node[ dir ]) ) { + if ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) { + return false; + } + } + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + // Seek `elem` from a previously-cached index + outerCache = parent[ expando ] || (parent[ expando ] = {}); + cache = outerCache[ type ] || []; + nodeIndex = cache[0] === dirruns && cache[1]; + diff = cache[0] === dirruns && cache[2]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( (node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + (diff = nodeIndex = 0) || start.pop()) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + outerCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + // Use previously-cached element index if available + } else if ( useCache && (cache = (elem[ expando ] || (elem[ expando ] = {}))[ type ]) && cache[0] === dirruns ) { + diff = cache[1]; + + // xml :nth-child(...) or :nth-last-child(...) or :nth(-last)?-of-type(...) + } else { + // Use the same loop as above to seek `elem` from the start + while ( (node = ++nodeIndex && node && node[ dir ] || + (diff = nodeIndex = 0) || start.pop()) ) { + + if ( ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) && ++diff ) { + // Cache the index of each encountered element + if ( useCache ) { + (node[ expando ] || (node[ expando ] = {}))[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction(function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf.call( seed, matched[i] ); + seed[ idx ] = !( matches[ idx ] = matched[i] ); + } + }) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + // Potentially complex pseudos + "not": markFunction(function( selector ) { + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction(function( seed, matches, context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( (elem = unmatched[i]) ) { + seed[i] = !(matches[i] = elem); + } + } + }) : + function( elem, context, xml ) { + input[0] = elem; + matcher( input, null, xml, results ); + return !results.pop(); + }; + }), + + "has": markFunction(function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + }), + + "contains": markFunction(function( text ) { + return function( elem ) { + return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1; + }; + }), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + // lang value must be a valid identifier + if ( !ridentifier.test(lang || "") ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( (elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( (elem = elem.parentNode) && elem.nodeType === 1 ); + return false; + }; + }), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex); + }, + + // Boolean properties + "enabled": function( elem ) { + return elem.disabled === false; + }, + + "disabled": function( elem ) { + return elem.disabled === true; + }, + + "checked": function( elem ) { + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected); + }, + + "selected": function( elem ) { + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos["empty"]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo(function() { + return [ 0 ]; + }), + + "last": createPositionalPseudo(function( matchIndexes, length ) { + return [ length - 1 ]; + }), + + "eq": createPositionalPseudo(function( matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + }), + + "even": createPositionalPseudo(function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + }), + + "odd": createPositionalPseudo(function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + }), + + "lt": createPositionalPseudo(function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + }), + + "gt": createPositionalPseudo(function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + }) + } +}; + +Expr.pseudos["nth"] = Expr.pseudos["eq"]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +function tokenize( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || (match = rcomma.exec( soFar )) ) { + if ( match ) { + // Don't consume trailing commas as valid + soFar = soFar.slice( match[0].length ) || soFar; + } + groups.push( (tokens = []) ); + } + + matched = false; + + // Combinators + if ( (match = rcombinators.exec( soFar )) ) { + matched = match.shift(); + tokens.push({ + value: matched, + // Cast descendant combinators to space + type: match[0].replace( rtrim, " " ) + }); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] || + (match = preFilters[ type ]( match ))) ) { + matched = match.shift(); + tokens.push({ + value: matched, + type: type, + matches: match + }); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +} + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[i].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + checkNonElements = base && dir === "parentNode", + doneName = done++; + + return combinator.first ? + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( (elem = elem[ dir ]) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from dir caching + if ( xml ) { + while ( (elem = elem[ dir ]) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( (elem = elem[ dir ]) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || (elem[ expando ] = {}); + if ( (oldCache = outerCache[ dir ]) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return (newCache[ 2 ] = oldCache[ 2 ]); + } else { + // Reuse newcache so results back-propagate to previous elements + outerCache[ dir ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) { + return true; + } + } + } + } + } + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[i]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[0]; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( (elem = unmatched[i]) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction(function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( (elem = temp[i]) ) { + matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( (elem = matcherOut[i]) ) { + // Restore matcherIn since elem is not yet a final match + temp.push( (matcherIn[i] = elem) ); + } + } + postFinder( null, (matcherOut = []), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( (elem = matcherOut[i]) && + (temp = postFinder ? indexOf.call( seed, elem ) : preMap[i]) > -1 ) { + + seed[temp] = !(results[temp] = elem); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + }); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[0].type ], + implicitRelative = leadingRelative || Expr.relative[" "], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf.call( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + return ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + (checkContext = context).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + } ]; + + for ( ; i < len; i++ ) { + if ( (matcher = Expr.relative[ tokens[i].type ]) ) { + matchers = [ addCombinator(elementMatcher( matchers ), matcher) ]; + } else { + matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[j].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" }) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( (tokens = tokens.slice( j )) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find["TAG"]( "*", outermost ), + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1), + len = elems.length; + + if ( outermost ) { + outermostContext = context !== document && context; + } + + // Add elements passing elementMatchers directly to results + // Keep `i` a string if there are no elements so `matchedCount` will be "00" below + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id + for ( ; i !== len && (elem = elems[i]) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + while ( (matcher = elementMatchers[j++]) ) { + if ( matcher( elem, context, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + // They will have gone through all possible matchers + if ( (elem = !matcher && elem) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // Apply set filters to unmatched elements + matchedCount += i; + if ( bySet && i !== matchedCount ) { + j = 0; + while ( (matcher = setMatchers[j++]) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !(unmatched[i] || setMatched[i]) ) { + setMatched[i] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, group /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + // Generate a function of recursive functions that can be used to check each element + if ( !group ) { + group = tokenize( selector ); + } + i = group.length; + while ( i-- ) { + cached = matcherFromTokens( group[i] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) ); + } + return cached; +}; + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[i], results ); + } + return results; +} + +function select( selector, context, results, seed ) { + var i, tokens, token, type, find, + match = tokenize( selector ); + + if ( !seed ) { + // Try to minimize operations if there is only one group + if ( match.length === 1 ) { + + // Take a shortcut and set the context if the root selector is an ID + tokens = match[0] = match[0].slice( 0 ); + if ( tokens.length > 2 && (token = tokens[0]).type === "ID" && + support.getById && context.nodeType === 9 && documentIsHTML && + Expr.relative[ tokens[1].type ] ) { + + context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0]; + if ( !context ) { + return results; + } + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[i]; + + // Abort if we hit a combinator + if ( Expr.relative[ (type = token.type) ] ) { + break; + } + if ( (find = Expr.find[ type ]) ) { + // Search, expanding context for leading sibling combinators + if ( (seed = find( + token.matches[0].replace( runescape, funescape ), + rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context + )) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + } + + // Compile and execute a filtering function + // Provide `match` to avoid retokenization if we modified the selector above + compile( selector, match )( + seed, + context, + !documentIsHTML, + results, + rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +} + +// One-time assignments + +// Sort stability +support.sortStable = expando.split("").sort( sortOrder ).join("") === expando; + +// Support: Chrome<14 +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert(function( div1 ) { + // Should return 1, but returns 4 (following) + return div1.compareDocumentPosition( document.createElement("div") ) & 1; +}); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert(function( div ) { + div.innerHTML = "<a href='#'></a>"; + return div.firstChild.getAttribute("href") === "#" ; +}) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + }); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert(function( div ) { + div.innerHTML = "<input/>"; + div.firstChild.setAttribute( "value", "" ); + return div.firstChild.getAttribute( "value" ) === ""; +}) ) { + addHandle( "value", function( elem, name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + }); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert(function( div ) { + return div.getAttribute("disabled") == null; +}) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + (val = elem.getAttributeNode( name )) && val.specified ? + val.value : + null; + } + }); +} + +return Sizzle; + +})( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; +jQuery.expr[":"] = jQuery.expr.pseudos; +jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; + + + +var rneedsContext = jQuery.expr.match.needsContext; + +var rsingleTag = (/^<(\w+)\s*\/?>(?:<\/\1>|)$/); + + + +var risSimple = /^.[^:#\[\.,]*$/; + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( jQuery.isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + /* jshint -W018 */ + return !!qualifier.call( elem, i, elem ) !== not; + }); + + } + + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + }); + + } + + if ( typeof qualifier === "string" ) { + if ( risSimple.test( qualifier ) ) { + return jQuery.filter( qualifier, elements, not ); + } + + qualifier = jQuery.filter( qualifier, elements ); + } + + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) >= 0 ) !== not; + }); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + return elems.length === 1 && elem.nodeType === 1 ? + jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] : + jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + })); +}; + +jQuery.fn.extend({ + find: function( selector ) { + var i, + len = this.length, + ret = [], + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter(function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + }) ); + } + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + // Needed because $( selector, context ) becomes $( context ).find( selector ) + ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret ); + ret.selector = this.selector ? this.selector + " " + selector : selector; + return ret; + }, + filter: function( selector ) { + return this.pushStack( winnow(this, selector || [], false) ); + }, + not: function( selector ) { + return this.pushStack( winnow(this, selector || [], true) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +}); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over <tag> to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/, + + init = jQuery.fn.init = function( selector, context ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[0] === "<" && selector[ selector.length - 1 ] === ">" && selector.length >= 3 ) { + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && (match[1] || !context) ) { + + // HANDLE: $(html) -> $(array) + if ( match[1] ) { + context = context instanceof jQuery ? context[0] : context; + + // scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[1], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + // Properties of context are called as methods if possible + if ( jQuery.isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[2] ); + + // Check parentNode to catch when Blackberry 4.6 returns + // nodes that are no longer in the document #6963 + if ( elem && elem.parentNode ) { + // Inject the element directly into the jQuery object + this.length = 1; + this[0] = elem; + } + + this.context = document; + this.selector = selector; + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || rootjQuery ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this.context = this[0] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( jQuery.isFunction( selector ) ) { + return typeof rootjQuery.ready !== "undefined" ? + rootjQuery.ready( selector ) : + // Execute immediately if ready is not present + selector( jQuery ); + } + + if ( selector.selector !== undefined ) { + this.selector = selector.selector; + this.context = selector.context; + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + // methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.extend({ + dir: function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( (elem = elem[ dir ]) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; + }, + + sibling: function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; + } +}); + +jQuery.fn.extend({ + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter(function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[i] ) ) { + return true; + } + } + }); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ? + jQuery( selectors, context || this.context ) : + 0; + + for ( ; i < l; i++ ) { + for ( cur = this[i]; cur && cur !== context; cur = cur.parentNode ) { + // Always skip document fragments + if ( cur.nodeType < 11 && (pos ? + pos.index(cur) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector(cur, selectors)) ) { + + matched.push( cur ); + break; + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.unique( matched ) : matched ); + }, + + // Determine the position of an element within + // the matched set of elements + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.unique( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter(selector) + ); + } +}); + +function sibling( cur, dir ) { + while ( (cur = cur[dir]) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each({ + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return jQuery.dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, i, until ) { + return jQuery.dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return jQuery.dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return jQuery.dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, i, until ) { + return jQuery.dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, i, until ) { + return jQuery.dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return jQuery.sibling( elem.firstChild ); + }, + contents: function( elem ) { + return elem.contentDocument || jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.unique( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +}); +var rnotwhite = (/\S+/g); + + + +// String to Object options format cache +var optionsCache = {}; + +// Convert String-formatted options into Object-formatted ones and store in cache +function createOptions( options ) { + var object = optionsCache[ options ] = {}; + jQuery.each( options.match( rnotwhite ) || [], function( _, flag ) { + object[ flag ] = true; + }); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + ( optionsCache[ options ] || createOptions( options ) ) : + jQuery.extend( {}, options ); + + var // Last fire value (for non-forgettable lists) + memory, + // Flag to know if list was already fired + fired, + // Flag to know if list is currently firing + firing, + // First callback to fire (used internally by add and fireWith) + firingStart, + // End of the loop when firing + firingLength, + // Index of currently firing callback (modified by remove if needed) + firingIndex, + // Actual callback list + list = [], + // Stack of fire calls for repeatable lists + stack = !options.once && [], + // Fire callbacks + fire = function( data ) { + memory = options.memory && data; + fired = true; + firingIndex = firingStart || 0; + firingStart = 0; + firingLength = list.length; + firing = true; + for ( ; list && firingIndex < firingLength; firingIndex++ ) { + if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) { + memory = false; // To prevent further calls using add + break; + } + } + firing = false; + if ( list ) { + if ( stack ) { + if ( stack.length ) { + fire( stack.shift() ); + } + } else if ( memory ) { + list = []; + } else { + self.disable(); + } + } + }, + // Actual Callbacks object + self = { + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + // First, we save the current length + var start = list.length; + (function add( args ) { + jQuery.each( args, function( _, arg ) { + var type = jQuery.type( arg ); + if ( type === "function" ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && type !== "string" ) { + // Inspect recursively + add( arg ); + } + }); + })( arguments ); + // Do we need to add the callbacks to the + // current firing batch? + if ( firing ) { + firingLength = list.length; + // With memory, if we're not firing then + // we should call right away + } else if ( memory ) { + firingStart = start; + fire( memory ); + } + } + return this; + }, + // Remove a callback from the list + remove: function() { + if ( list ) { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + // Handle firing indexes + if ( firing ) { + if ( index <= firingLength ) { + firingLength--; + } + if ( index <= firingIndex ) { + firingIndex--; + } + } + } + }); + } + return this; + }, + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? jQuery.inArray( fn, list ) > -1 : !!( list && list.length ); + }, + // Remove all callbacks from the list + empty: function() { + list = []; + firingLength = 0; + return this; + }, + // Have the list do nothing anymore + disable: function() { + list = stack = memory = undefined; + return this; + }, + // Is it disabled? + disabled: function() { + return !list; + }, + // Lock the list in its current state + lock: function() { + stack = undefined; + if ( !memory ) { + self.disable(); + } + return this; + }, + // Is it locked? + locked: function() { + return !stack; + }, + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( list && ( !fired || stack ) ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + if ( firing ) { + stack.push( args ); + } else { + fire( args ); + } + } + return this; + }, + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +jQuery.extend({ + + Deferred: function( func ) { + var tuples = [ + // action, add listener, listener list, final state + [ "resolve", "done", jQuery.Callbacks("once memory"), "resolved" ], + [ "reject", "fail", jQuery.Callbacks("once memory"), "rejected" ], + [ "notify", "progress", jQuery.Callbacks("memory") ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + then: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + return jQuery.Deferred(function( newDefer ) { + jQuery.each( tuples, function( i, tuple ) { + var fn = jQuery.isFunction( fns[ i ] ) && fns[ i ]; + // deferred[ done | fail | progress ] for forwarding actions to newDefer + deferred[ tuple[1] ](function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && jQuery.isFunction( returned.promise ) ) { + returned.promise() + .done( newDefer.resolve ) + .fail( newDefer.reject ) + .progress( newDefer.notify ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( this === promise ? newDefer.promise() : this, fn ? [ returned ] : arguments ); + } + }); + }); + fns = null; + }).promise(); + }, + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Keep pipe for back-compat + promise.pipe = promise.then; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 3 ]; + + // promise[ done | fail | progress ] = list.add + promise[ tuple[1] ] = list.add; + + // Handle state + if ( stateString ) { + list.add(function() { + // state = [ resolved | rejected ] + state = stateString; + + // [ reject_list | resolve_list ].disable; progress_list.lock + }, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock ); + } + + // deferred[ resolve | reject | notify ] + deferred[ tuple[0] ] = function() { + deferred[ tuple[0] + "With" ]( this === deferred ? promise : this, arguments ); + return this; + }; + deferred[ tuple[0] + "With" ] = list.fireWith; + }); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( subordinate /* , ..., subordinateN */ ) { + var i = 0, + resolveValues = slice.call( arguments ), + length = resolveValues.length, + + // the count of uncompleted subordinates + remaining = length !== 1 || ( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0, + + // the master Deferred. If resolveValues consist of only a single Deferred, just use that. + deferred = remaining === 1 ? subordinate : jQuery.Deferred(), + + // Update function for both resolve and progress values + updateFunc = function( i, contexts, values ) { + return function( value ) { + contexts[ i ] = this; + values[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( values === progressValues ) { + deferred.notifyWith( contexts, values ); + } else if ( !( --remaining ) ) { + deferred.resolveWith( contexts, values ); + } + }; + }, + + progressValues, progressContexts, resolveContexts; + + // add listeners to Deferred subordinates; treat others as resolved + if ( length > 1 ) { + progressValues = new Array( length ); + progressContexts = new Array( length ); + resolveContexts = new Array( length ); + for ( ; i < length; i++ ) { + if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) { + resolveValues[ i ].promise() + .done( updateFunc( i, resolveContexts, resolveValues ) ) + .fail( deferred.reject ) + .progress( updateFunc( i, progressContexts, progressValues ) ); + } else { + --remaining; + } + } + } + + // if we're not waiting on anything, resolve the master + if ( !remaining ) { + deferred.resolveWith( resolveContexts, resolveValues ); + } + + return deferred.promise(); + } +}); + + +// The deferred used on DOM ready +var readyList; + +jQuery.fn.ready = function( fn ) { + // Add the callback + jQuery.ready.promise().done( fn ); + + return this; +}; + +jQuery.extend({ + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Hold (or release) the ready event + holdReady: function( hold ) { + if ( hold ) { + jQuery.readyWait++; + } else { + jQuery.ready( true ); + } + }, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + + // Trigger any bound ready events + if ( jQuery.fn.trigger ) { + jQuery( document ).trigger("ready").off("ready"); + } + } +}); + +/** + * The ready event handler and self cleanup method + */ +function completed() { + document.removeEventListener( "DOMContentLoaded", completed, false ); + window.removeEventListener( "load", completed, false ); + jQuery.ready(); +} + +jQuery.ready.promise = function( obj ) { + if ( !readyList ) { + + readyList = jQuery.Deferred(); + + // Catch cases where $(document).ready() is called after the browser event has already occurred. + // we once tried to use readyState "interactive" here, but it caused issues like the one + // discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15 + if ( document.readyState === "complete" ) { + // Handle it asynchronously to allow scripts the opportunity to delay ready + setTimeout( jQuery.ready ); + + } else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed, false ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed, false ); + } + } + return readyList.promise( obj ); +}; + +// Kick off the DOM ready check even if the user does not +jQuery.ready.promise(); + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = jQuery.access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( jQuery.type( key ) === "object" ) { + chainable = true; + for ( i in key ) { + jQuery.access( elems, fn, i, key[i], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !jQuery.isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( elems[i], key, raw ? value : value.call( elems[i], i, fn( elems[i], key ) ) ); + } + } + } + + return chainable ? + elems : + + // Gets + bulk ? + fn.call( elems ) : + len ? fn( elems[0], key ) : emptyGet; +}; + + +/** + * Determines whether an object can have data + */ +jQuery.acceptData = function( owner ) { + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + /* jshint -W018 */ + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + +function Data() { + // Support: Android < 4, + // Old WebKit does not have Object.preventExtensions/freeze method, + // return new empty object instead with no [[set]] accessor + Object.defineProperty( this.cache = {}, 0, { + get: function() { + return {}; + } + }); + + this.expando = jQuery.expando + Math.random(); +} + +Data.uid = 1; +Data.accepts = jQuery.acceptData; + +Data.prototype = { + key: function( owner ) { + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return the key for a frozen object. + if ( !Data.accepts( owner ) ) { + return 0; + } + + var descriptor = {}, + // Check if the owner object already has a cache key + unlock = owner[ this.expando ]; + + // If not, create one + if ( !unlock ) { + unlock = Data.uid++; + + // Secure it in a non-enumerable, non-writable property + try { + descriptor[ this.expando ] = { value: unlock }; + Object.defineProperties( owner, descriptor ); + + // Support: Android < 4 + // Fallback to a less secure definition + } catch ( e ) { + descriptor[ this.expando ] = unlock; + jQuery.extend( owner, descriptor ); + } + } + + // Ensure the cache object + if ( !this.cache[ unlock ] ) { + this.cache[ unlock ] = {}; + } + + return unlock; + }, + set: function( owner, data, value ) { + var prop, + // There may be an unlock assigned to this node, + // if there is no entry for this "owner", create one inline + // and set the unlock as though an owner entry had always existed + unlock = this.key( owner ), + cache = this.cache[ unlock ]; + + // Handle: [ owner, key, value ] args + if ( typeof data === "string" ) { + cache[ data ] = value; + + // Handle: [ owner, { properties } ] args + } else { + // Fresh assignments by object are shallow copied + if ( jQuery.isEmptyObject( cache ) ) { + jQuery.extend( this.cache[ unlock ], data ); + // Otherwise, copy the properties one-by-one to the cache object + } else { + for ( prop in data ) { + cache[ prop ] = data[ prop ]; + } + } + } + return cache; + }, + get: function( owner, key ) { + // Either a valid cache is found, or will be created. + // New caches will be created and the unlock returned, + // allowing direct access to the newly created + // empty data object. A valid owner object must be provided. + var cache = this.cache[ this.key( owner ) ]; + + return key === undefined ? + cache : cache[ key ]; + }, + access: function( owner, key, value ) { + var stored; + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ((key && typeof key === "string") && value === undefined) ) { + + stored = this.get( owner, key ); + + return stored !== undefined ? + stored : this.get( owner, jQuery.camelCase(key) ); + } + + // [*]When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, name, camel, + unlock = this.key( owner ), + cache = this.cache[ unlock ]; + + if ( key === undefined ) { + this.cache[ unlock ] = {}; + + } else { + // Support array or space separated string of keys + if ( jQuery.isArray( key ) ) { + // If "name" is an array of keys... + // When data is initially created, via ("key", "val") signature, + // keys will be converted to camelCase. + // Since there is no way to tell _how_ a key was added, remove + // both plain key and camelCase key. #12786 + // This will only penalize the array argument path. + name = key.concat( key.map( jQuery.camelCase ) ); + } else { + camel = jQuery.camelCase( key ); + // Try the string as a key before any manipulation + if ( key in cache ) { + name = [ key, camel ]; + } else { + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + name = camel; + name = name in cache ? + [ name ] : ( name.match( rnotwhite ) || [] ); + } + } + + i = name.length; + while ( i-- ) { + delete cache[ name[ i ] ]; + } + } + }, + hasData: function( owner ) { + return !jQuery.isEmptyObject( + this.cache[ owner[ this.expando ] ] || {} + ); + }, + discard: function( owner ) { + if ( owner[ this.expando ] ) { + delete this.cache[ owner[ this.expando ] ]; + } + } +}; +var data_priv = new Data(); + +var data_user = new Data(); + + + +/* + Implementation Summary + + 1. Enforce API surface and semantic compatibility with 1.9.x branch + 2. Improve the module's maintainability by reducing the storage + paths to a single mechanism. + 3. Use the same single mechanism to support "private" and "user" data. + 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) + 5. Avoid exposing implementation details on user objects (eg. expando properties) + 6. Provide a clear path for implementation upgrade to WeakMap in 2014 +*/ +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /([A-Z])/g; + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = data === "true" ? true : + data === "false" ? false : + data === "null" ? null : + // Only convert to a number if it doesn't change the string + +data + "" === data ? +data : + rbrace.test( data ) ? jQuery.parseJSON( data ) : + data; + } catch( e ) {} + + // Make sure we set the data so it isn't changed later + data_user.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend({ + hasData: function( elem ) { + return data_user.hasData( elem ) || data_priv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return data_user.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + data_user.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to data_priv methods, these can be deprecated. + _data: function( elem, name, data ) { + return data_priv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + data_priv.remove( elem, name ); + } +}); + +jQuery.fn.extend({ + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = data_user.get( elem ); + + if ( elem.nodeType === 1 && !data_priv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + name = attrs[ i ].name; + + if ( name.indexOf( "data-" ) === 0 ) { + name = jQuery.camelCase( name.slice(5) ); + dataAttr( elem, name, data[ name ] ); + } + } + data_priv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each(function() { + data_user.set( this, key ); + }); + } + + return access( this, function( value ) { + var data, + camelKey = jQuery.camelCase( key ); + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + // Attempt to get data from the cache + // with the key as-is + data = data_user.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to get data from the cache + // with the key camelized + data = data_user.get( elem, camelKey ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, camelKey, undefined ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each(function() { + // First, attempt to store a copy or reference of any + // data that might've been store with a camelCased key. + var data = data_user.get( this, camelKey ); + + // For HTML5 data-* attribute interop, we have to + // store property names with dashes in a camelCase form. + // This might not apply to all properties...* + data_user.set( this, camelKey, value ); + + // *... In the case of properties that might _actually_ + // have dashes, we need to also store a copy of that + // unchanged property. + if ( key.indexOf("-") !== -1 && data !== undefined ) { + data_user.set( this, key, value ); + } + }); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each(function() { + data_user.remove( this, key ); + }); + } +}); + + +jQuery.extend({ + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = data_priv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || jQuery.isArray( data ) ) { + queue = data_priv.access( elem, type, jQuery.makeArray(data) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // not intended for public consumption - generates a queueHooks object, or returns the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return data_priv.get( elem, key ) || data_priv.access( elem, key, { + empty: jQuery.Callbacks("once memory").add(function() { + data_priv.remove( elem, [ type + "queue", key ] ); + }) + }); + } +}); + +jQuery.fn.extend({ + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[0], type ); + } + + return data === undefined ? + this : + this.each(function() { + var queue = jQuery.queue( this, type, data ); + + // ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[0] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + }); + }, + dequeue: function( type ) { + return this.each(function() { + jQuery.dequeue( this, type ); + }); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = data_priv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +}); +var pnum = (/[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/).source; + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var isHidden = function( elem, el ) { + // isHidden might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem ); + }; + +var rcheckableType = (/^(?:checkbox|radio)$/i); + + + +(function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ); + + // #11217 - WebKit loses check when the name is after the checked attribute + div.innerHTML = "<input type='radio' checked='checked' name='t'/>"; + + // Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3 + // old WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Make sure textarea (and checkbox) defaultValue is properly cloned + // Support: IE9-IE11+ + div.innerHTML = "<textarea>x</textarea>"; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; +})(); +var strundefined = typeof undefined; + + + +support.focusinBubbles = "onfocusin" in window; + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|contextmenu)|click/, + rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)$/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = data_priv.get( elem ); + + // Don't attach events to noData or text/comment nodes (but allow plain objects) + if ( !elemData ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !(events = elemData.events) ) { + events = elemData.events = {}; + } + if ( !(eventHandle = elemData.handle) ) { + eventHandle = elemData.handle = function( e ) { + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== strundefined && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnotwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[t] ) || []; + type = origType = tmp[1]; + namespaces = ( tmp[2] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend({ + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join(".") + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !(handlers = events[ type ]) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle, false ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = data_priv.hasData( elem ) && data_priv.get( elem ); + + if ( !elemData || !(events = elemData.events) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnotwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[t] ) || []; + type = origType = tmp[1]; + namespaces = ( tmp[2] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[2] && new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + delete elemData.handle; + data_priv.remove( elem, "events" ); + } + }, + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split(".") : []; + + cur = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf(".") >= 0 ) { + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split("."); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf(":") < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join("."); + event.namespace_re = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === (elem.ownerDocument || document) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( (cur = eventPath[i++]) && !event.isPropagationStopped() ) { + + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( data_priv.get( cur, "events" ) || {} )[ event.type ] && data_priv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && jQuery.acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( (!special._default || special._default.apply( eventPath.pop(), data ) === false) && + jQuery.acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + elem[ type ](); + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + dispatch: function( event ) { + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( event ); + + var i, j, ret, matched, handleObj, + handlerQueue = [], + args = slice.call( arguments ), + handlers = ( data_priv.get( this, "events" ) || {} )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[0] = event; + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( (matched = handlerQueue[ i++ ]) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( (handleObj = matched.handlers[ j++ ]) && !event.isImmediatePropagationStopped() ) { + + // Triggered event must either 1) have no namespace, or + // 2) have namespace(s) a subset or equal to those in the bound event (both can have no namespace). + if ( !event.namespace_re || event.namespace_re.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler ) + .apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( (event.result = ret) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, matches, sel, handleObj, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + // Black-hole SVG <use> instance trees (#13180) + // Avoid non-left-click bubbling in Firefox (#3861) + if ( delegateCount && cur.nodeType && (!event.button || event.type !== "click") ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.disabled !== true || event.type !== "click" ) { + matches = []; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matches[ sel ] === undefined ) { + matches[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) >= 0 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matches[ sel ] ) { + matches.push( handleObj ); + } + } + if ( matches.length ) { + handlerQueue.push({ elem: cur, handlers: matches }); + } + } + } + } + + // Add the remaining (directly-bound) handlers + if ( delegateCount < handlers.length ) { + handlerQueue.push({ elem: this, handlers: handlers.slice( delegateCount ) }); + } + + return handlerQueue; + }, + + // Includes some event props shared by KeyEvent and MouseEvent + props: "altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "), + + fixHooks: {}, + + keyHooks: { + props: "char charCode key keyCode".split(" "), + filter: function( event, original ) { + + // Add which for key events + if ( event.which == null ) { + event.which = original.charCode != null ? original.charCode : original.keyCode; + } + + return event; + } + }, + + mouseHooks: { + props: "button buttons clientX clientY offsetX offsetY pageX pageY screenX screenY toElement".split(" "), + filter: function( event, original ) { + var eventDoc, doc, body, + button = original.button; + + // Calculate pageX/Y if missing and clientX/Y available + if ( event.pageX == null && original.clientX != null ) { + eventDoc = event.target.ownerDocument || document; + doc = eventDoc.documentElement; + body = eventDoc.body; + + event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 ); + event.pageY = original.clientY + ( doc && doc.scrollTop || body && body.scrollTop || 0 ) - ( doc && doc.clientTop || body && body.clientTop || 0 ); + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + // Note: button is not normalized, so don't use it + if ( !event.which && button !== undefined ) { + event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) ); + } + + return event; + } + }, + + fix: function( event ) { + if ( event[ jQuery.expando ] ) { + return event; + } + + // Create a writable copy of the event object and normalize some properties + var i, prop, copy, + type = event.type, + originalEvent = event, + fixHook = this.fixHooks[ type ]; + + if ( !fixHook ) { + this.fixHooks[ type ] = fixHook = + rmouseEvent.test( type ) ? this.mouseHooks : + rkeyEvent.test( type ) ? this.keyHooks : + {}; + } + copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props; + + event = new jQuery.Event( originalEvent ); + + i = copy.length; + while ( i-- ) { + prop = copy[ i ]; + event[ prop ] = originalEvent[ prop ]; + } + + // Support: Cordova 2.5 (WebKit) (#13255) + // All events should have a target; Cordova deviceready doesn't + if ( !event.target ) { + event.target = document; + } + + // Support: Safari 6.0+, Chrome < 28 + // Target should not be a text node (#504, #13143) + if ( event.target.nodeType === 3 ) { + event.target = event.target.parentNode; + } + + return fixHook.filter ? fixHook.filter( event, originalEvent ) : event; + }, + + special: { + load: { + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + focus: { + // Fire native event if possible so blur/focus sequence is correct + trigger: function() { + if ( this !== safeActiveElement() && this.focus ) { + this.focus(); + return false; + } + }, + delegateType: "focusin" + }, + blur: { + trigger: function() { + if ( this === safeActiveElement() && this.blur ) { + this.blur(); + return false; + } + }, + delegateType: "focusout" + }, + click: { + // For checkbox, fire native event so checked state will be right + trigger: function() { + if ( this.type === "checkbox" && this.click && jQuery.nodeName( this, "input" ) ) { + this.click(); + return false; + } + }, + + // For cross-browser consistency, don't fire native .click() on links + _default: function( event ) { + return jQuery.nodeName( event.target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined ) { + event.originalEvent.returnValue = event.result; + } + } + } + }, + + simulate: function( type, elem, event, bubble ) { + // Piggyback on a donor event to simulate a different one. + // Fake originalEvent to avoid donor's stopPropagation, but if the + // simulated event prevents default then we do the same on the donor. + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true, + originalEvent: {} + } + ); + if ( bubble ) { + jQuery.event.trigger( e, null, elem ); + } else { + jQuery.event.dispatch.call( elem, e ); + } + if ( e.isDefaultPrevented() ) { + event.preventDefault(); + } + } +}; + +jQuery.removeEvent = function( elem, type, handle ) { + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle, false ); + } +}; + +jQuery.Event = function( src, props ) { + // Allow instantiation without the 'new' keyword + if ( !(this instanceof jQuery.Event) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + // Support: Android < 4.0 + src.defaultPrevented === undefined && + src.getPreventDefault && src.getPreventDefault() ? + returnTrue : + returnFalse; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || jQuery.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && e.preventDefault ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && e.stopPropagation ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + this.isImmediatePropagationStopped = returnTrue; + this.stopPropagation(); + } +}; + +// Create mouseenter/leave events using mouseover/out and event-time checks +// Support: Chrome 15+ +jQuery.each({ + mouseenter: "mouseover", + mouseleave: "mouseout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mousenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || (related !== target && !jQuery.contains( target, related )) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +}); + +// Create "bubbling" focus and blur events +// Support: Firefox, Chrome, Safari +if ( !support.focusinBubbles ) { + jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + var doc = this.ownerDocument || this, + attaches = data_priv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + data_priv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this, + attaches = data_priv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + data_priv.remove( doc, fix ); + + } else { + data_priv.access( doc, fix, attaches ); + } + } + }; + }); +} + +jQuery.fn.extend({ + + on: function( types, selector, data, fn, /*INTERNAL*/ one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + this.on( type, selector, data, types[ type ], one ); + } + return this; + } + + if ( data == null && fn == null ) { + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return this; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return this.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + }); + }, + one: function( types, selector, data, fn ) { + return this.on( types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each(function() { + jQuery.event.remove( this, types, fn, selector ); + }); + }, + + trigger: function( type, data ) { + return this.each(function() { + jQuery.event.trigger( type, data, this ); + }); + }, + triggerHandler: function( type, data ) { + var elem = this[0]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +}); + + +var + rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi, + rtagName = /<([\w:]+)/, + rhtml = /<|&#?\w+;/, + rnoInnerhtml = /<(?:script|style|link)/i, + // checked="checked" or checked + rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i, + rscriptType = /^$|\/(?:java|ecma)script/i, + rscriptTypeMasked = /^true\/(.*)/, + rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g, + + // We have to close these tags to support XHTML (#13200) + wrapMap = { + + // Support: IE 9 + option: [ 1, "<select multiple='multiple'>", "</select>" ], + + thead: [ 1, "<table>", "</table>" ], + col: [ 2, "<table><colgroup>", "</colgroup></table>" ], + tr: [ 2, "<table><tbody>", "</tbody></table>" ], + td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ], + + _default: [ 0, "", "" ] + }; + +// Support: IE 9 +wrapMap.optgroup = wrapMap.option; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: 1.x compatibility +// Manipulating tables requires a tbody +function manipulationTarget( elem, content ) { + return jQuery.nodeName( elem, "table" ) && + jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ? + + elem.getElementsByTagName("tbody")[0] || + elem.appendChild( elem.ownerDocument.createElement("tbody") ) : + elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = (elem.getAttribute("type") !== null) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + var match = rscriptTypeMasked.exec( elem.type ); + + if ( match ) { + elem.type = match[ 1 ]; + } else { + elem.removeAttribute("type"); + } + + return elem; +} + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + data_priv.set( + elems[ i ], "globalEval", !refElements || data_priv.get( refElements[ i ], "globalEval" ) + ); + } +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( data_priv.hasData( src ) ) { + pdataOld = data_priv.access( src ); + pdataCur = data_priv.set( dest, pdataOld ); + events = pdataOld.events; + + if ( events ) { + delete pdataCur.handle; + pdataCur.events = {}; + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( data_user.hasData( src ) ) { + udataOld = data_user.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + data_user.set( dest, udataCur ); + } +} + +function getAll( context, tag ) { + var ret = context.getElementsByTagName ? context.getElementsByTagName( tag || "*" ) : + context.querySelectorAll ? context.querySelectorAll( tag || "*" ) : + []; + + return tag === undefined || tag && jQuery.nodeName( context, tag ) ? + jQuery.merge( [ context ], ret ) : + ret; +} + +// Support: IE >= 9 +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +jQuery.extend({ + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = jQuery.contains( elem.ownerDocument, elem ); + + // Support: IE >= 9 + // Fix Cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + buildFragment: function( elems, context, scripts, selection ) { + var elem, tmp, tag, wrap, contains, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( jQuery.type( elem ) === "object" ) { + // Support: QtWebKit + // jQuery.merge because push.apply(_, arraylike) throws + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement("div") ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + elem.replace( rxhtmlTag, "<$1></$2>" ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: QtWebKit + // jQuery.merge because push.apply(_, arraylike) throws + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Fixes #12346 + // Support: Webkit, IE + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( (elem = nodes[ i++ ]) ) { + + // #4087 - If origin and destination elements are the same, and this is + // that element, do not do anything + if ( selection && jQuery.inArray( elem, selection ) !== -1 ) { + continue; + } + + contains = jQuery.contains( elem.ownerDocument, elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( contains ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( (elem = tmp[ j++ ]) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; + }, + + cleanData: function( elems ) { + var data, elem, events, type, key, j, + special = jQuery.event.special, + i = 0; + + for ( ; (elem = elems[ i ]) !== undefined; i++ ) { + if ( jQuery.acceptData( elem ) ) { + key = elem[ data_priv.expando ]; + + if ( key && (data = data_priv.cache[ key ]) ) { + events = Object.keys( data.events || {} ); + if ( events.length ) { + for ( j = 0; (type = events[j]) !== undefined; j++ ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + if ( data_priv.cache[ key ] ) { + // Discard any remaining `private` data + delete data_priv.cache[ key ]; + } + } + } + // Discard any remaining `user` data + delete data_user.cache[ elem[ data_user.expando ] ]; + } + } +}); + +jQuery.fn.extend({ + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each(function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + }); + }, null, value, arguments.length ); + }, + + append: function() { + return this.domManip( arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + }); + }, + + prepend: function() { + return this.domManip( arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + }); + }, + + before: function() { + return this.domManip( arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + }); + }, + + after: function() { + return this.domManip( arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + }); + }, + + remove: function( selector, keepData /* Internal Use Only */ ) { + var elem, + elems = selector ? jQuery.filter( selector, this ) : this, + i = 0; + + for ( ; (elem = elems[i]) != null; i++ ) { + if ( !keepData && elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem ) ); + } + + if ( elem.parentNode ) { + if ( keepData && jQuery.contains( elem.ownerDocument, elem ) ) { + setGlobalEval( getAll( elem, "script" ) ); + } + elem.parentNode.removeChild( elem ); + } + } + + return this; + }, + + empty: function() { + var elem, + i = 0; + + for ( ; (elem = this[i]) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map(function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + }); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = value.replace( rxhtmlTag, "<$1></$2>" ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var arg = arguments[ 0 ]; + + // Make the changes, replacing each context element with the new content + this.domManip( arguments, function( elem ) { + arg = this.parentNode; + + jQuery.cleanData( getAll( this ) ); + + if ( arg ) { + arg.replaceChild( elem, this ); + } + }); + + // Force removal if there was no new content (e.g., from empty arguments) + return arg && (arg.length || arg.nodeType) ? this : this.remove(); + }, + + detach: function( selector ) { + return this.remove( selector, true ); + }, + + domManip: function( args, callback ) { + + // Flatten any nested arrays + args = concat.apply( [], args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = this.length, + set = this, + iNoClone = l - 1, + value = args[ 0 ], + isFunction = jQuery.isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( isFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return this.each(function( index ) { + var self = set.eq( index ); + if ( isFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + self.domManip( args, callback ); + }); + } + + if ( l ) { + fragment = jQuery.buildFragment( args, this[ 0 ].ownerDocument, false, this ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + if ( first ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + // Support: QtWebKit + // jQuery.merge because push.apply(_, arraylike) throws + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( this[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !data_priv.access( node, "globalEval" ) && jQuery.contains( doc, node ) ) { + + if ( node.src ) { + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl ) { + jQuery._evalUrl( node.src ); + } + } else { + jQuery.globalEval( node.textContent.replace( rcleanScript, "" ) ); + } + } + } + } + } + } + + return this; + } +}); + +jQuery.each({ + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: QtWebKit + // .get() because push.apply(_, arraylike) throws + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +}); + + +var iframe, + elemdisplay = {}; + +/** + * Retrieve the actual display of a element + * @param {String} name nodeName of the element + * @param {Object} doc Document object + */ +// Called only from within defaultDisplay +function actualDisplay( name, doc ) { + var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ), + + // getDefaultComputedStyle might be reliably used only on attached element + display = window.getDefaultComputedStyle ? + + // Use of this method is a temporary fix (more like optmization) until something better comes along, + // since it was removed from specification and supported only in FF + window.getDefaultComputedStyle( elem[ 0 ] ).display : jQuery.css( elem[ 0 ], "display" ); + + // We don't have any data stored on the element, + // so use "detach" method as fast way to get rid of the element + elem.detach(); + + return display; +} + +/** + * Try to determine the default display value of an element + * @param {String} nodeName + */ +function defaultDisplay( nodeName ) { + var doc = document, + display = elemdisplay[ nodeName ]; + + if ( !display ) { + display = actualDisplay( nodeName, doc ); + + // If the simple way fails, read from inside an iframe + if ( display === "none" || !display ) { + + // Use the already-created iframe if possible + iframe = (iframe || jQuery( "<iframe frameborder='0' width='0' height='0'/>" )).appendTo( doc.documentElement ); + + // Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse + doc = iframe[ 0 ].contentDocument; + + // Support: IE + doc.write(); + doc.close(); + + display = actualDisplay( nodeName, doc ); + iframe.detach(); + } + + // Store the correct default display + elemdisplay[ nodeName ] = display; + } + + return display; +} +var rmargin = (/^margin/); + +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + return elem.ownerDocument.defaultView.getComputedStyle( elem, null ); + }; + + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + style = elem.style; + + computed = computed || getStyles( elem ); + + // Support: IE9 + // getPropertyValue is only needed for .css('filter') in IE9, see #12537 + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + } + + if ( computed ) { + + if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) { + ret = jQuery.style( elem, name ); + } + + // Support: iOS < 6 + // A tribute to the "awesome hack by Dean Edwards" + // iOS < 6 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels + // this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values + if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + // Support: IE + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + // Hook not needed (or it's not possible to use it due to missing dependency), + // remove it. + // Since there are no other hooks for marginRight, remove the whole object. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + + return (this.get = hookFn).apply( this, arguments ); + } + }; +} + + +(function() { + var pixelPositionVal, boxSizingReliableVal, + // Support: Firefox, Android 2.3 (Prefixed box-sizing versions). + divReset = "padding:0;margin:0;border:0;display:block;-webkit-box-sizing:content-box;" + + "-moz-box-sizing:content-box;box-sizing:content-box", + docElem = document.documentElement, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + container.style.cssText = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px;" + + "margin-top:1px"; + container.appendChild( div ); + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computePixelPositionAndBoxSizingReliable() { + // Support: Firefox, Android 2.3 (Prefixed box-sizing versions). + div.style.cssText = "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" + + "box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;" + + "position:absolute;top:1%"; + docElem.appendChild( container ); + + var divStyle = window.getComputedStyle( div, null ); + pixelPositionVal = divStyle.top !== "1%"; + boxSizingReliableVal = divStyle.width === "4px"; + + docElem.removeChild( container ); + } + + // Use window.getComputedStyle because jsdom on node.js will break without it. + if ( window.getComputedStyle ) { + jQuery.extend(support, { + pixelPosition: function() { + // This test is executed only once but we still do memoizing + // since we can use the boxSizingReliable pre-computing. + // No need to check if the test was already performed, though. + computePixelPositionAndBoxSizingReliable(); + return pixelPositionVal; + }, + boxSizingReliable: function() { + if ( boxSizingReliableVal == null ) { + computePixelPositionAndBoxSizingReliable(); + } + return boxSizingReliableVal; + }, + reliableMarginRight: function() { + // Support: Android 2.3 + // Check if div with explicit width and no margin-right incorrectly + // gets computed margin-right based on width of container. (#3333) + // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right + // This support function is only executed once so no memoizing is needed. + var ret, + marginDiv = div.appendChild( document.createElement( "div" ) ); + marginDiv.style.cssText = div.style.cssText = divReset; + marginDiv.style.marginRight = marginDiv.style.width = "0"; + div.style.width = "1px"; + docElem.appendChild( container ); + + ret = !parseFloat( window.getComputedStyle( marginDiv, null ).marginRight ); + + docElem.removeChild( container ); + + // Clean up the div for other support tests. + div.innerHTML = ""; + + return ret; + } + }); + } +})(); + + +// A method for quickly swapping in/out CSS properties to get correct calculations. +jQuery.swap = function( elem, options, callback, args ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.apply( elem, args || [] ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var + // swappable if display is none or starts with table except "table", "table-cell", or "table-caption" + // see here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rnumsplit = new RegExp( "^(" + pnum + ")(.*)$", "i" ), + rrelNum = new RegExp( "^([+-])=(" + pnum + ")", "i" ), + + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: 0, + fontWeight: 400 + }, + + cssPrefixes = [ "Webkit", "O", "Moz", "ms" ]; + +// return a css property mapped to a potentially vendor prefixed property +function vendorPropName( style, name ) { + + // shortcut for names that are not vendor prefixed + if ( name in style ) { + return name; + } + + // check for vendor prefixed names + var capName = name[0].toUpperCase() + name.slice(1), + origName = name, + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in style ) { + return name; + } + } + + return origName; +} + +function setPositiveNumber( elem, value, subtract ) { + var matches = rnumsplit.exec( value ); + return matches ? + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) : + value; +} + +function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) { + var i = extra === ( isBorderBox ? "border" : "content" ) ? + // If we already have the right measurement, avoid augmentation + 4 : + // Otherwise initialize for horizontal or vertical properties + name === "width" ? 1 : 0, + + val = 0; + + for ( ; i < 4; i += 2 ) { + // both box models exclude margin, so add it if we want it + if ( extra === "margin" ) { + val += jQuery.css( elem, extra + cssExpand[ i ], true, styles ); + } + + if ( isBorderBox ) { + // border-box includes padding, so remove it if we want content + if ( extra === "content" ) { + val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // at this point, extra isn't border nor margin, so remove border + if ( extra !== "margin" ) { + val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } else { + // at this point, extra isn't content, so add padding + val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // at this point, extra isn't content nor padding, so add border + if ( extra !== "padding" ) { + val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + return val; +} + +function getWidthOrHeight( elem, name, extra ) { + + // Start with offset property, which is equivalent to the border-box value + var valueIsBorderBox = true, + val = name === "width" ? elem.offsetWidth : elem.offsetHeight, + styles = getStyles( elem ), + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // some non-html elements return undefined for offsetWidth, so check for null/undefined + // svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285 + // MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668 + if ( val <= 0 || val == null ) { + // Fall back to computed then uncomputed css if necessary + val = curCSS( elem, name, styles ); + if ( val < 0 || val == null ) { + val = elem.style[ name ]; + } + + // Computed unit is not pixels. Stop here and return. + if ( rnumnonpx.test(val) ) { + return val; + } + + // we need the check for style in case a browser which returns unreliable values + // for getComputedStyle silently falls back to the reliable elem.style + valueIsBorderBox = isBorderBox && + ( support.boxSizingReliable() || val === elem.style[ name ] ); + + // Normalize "", auto, and prepare for extra + val = parseFloat( val ) || 0; + } + + // use the active box-sizing model to add/subtract irrelevant styles + return ( val + + augmentWidthOrHeight( + elem, + name, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles + ) + ) + "px"; +} + +function showHide( elements, show ) { + var display, elem, hidden, + values = [], + index = 0, + length = elements.length; + + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + values[ index ] = data_priv.get( elem, "olddisplay" ); + display = elem.style.display; + if ( show ) { + // Reset the inline display of this element to learn if it is + // being hidden by cascaded rules or not + if ( !values[ index ] && display === "none" ) { + elem.style.display = ""; + } + + // Set elements which have been overridden with display: none + // in a stylesheet to whatever the default browser style is + // for such an element + if ( elem.style.display === "" && isHidden( elem ) ) { + values[ index ] = data_priv.access( elem, "olddisplay", defaultDisplay(elem.nodeName) ); + } + } else { + + if ( !values[ index ] ) { + hidden = isHidden( elem ); + + if ( display && display !== "none" || !hidden ) { + data_priv.set( elem, "olddisplay", hidden ? display : jQuery.css(elem, "display") ); + } + } + } + } + + // Set the display of most of the elements in a second loop + // to avoid the constant reflow + for ( index = 0; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + if ( !show || elem.style.display === "none" || elem.style.display === "" ) { + elem.style.display = show ? values[ index ] || "" : "none"; + } + } + + return elements; +} + +jQuery.extend({ + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "columnCount": true, + "fillOpacity": true, + "fontWeight": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: { + // normalize float css property + "float": "cssFloat" + }, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = jQuery.camelCase( name ), + style = elem.style; + + name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) ); + + // gets hook for the prefixed version + // followed by the unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // convert relative number strings (+= or -=) to relative numbers. #7345 + if ( type === "string" && (ret = rrelNum.exec( value )) ) { + value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) ); + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set. See: #7116 + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add 'px' to the (except for certain CSS properties) + if ( type === "number" && !jQuery.cssNumber[ origName ] ) { + value += "px"; + } + + // Fixes #8908, it can be done more correctly by specifying setters in cssHooks, + // but it would mean to define eight (for every problematic property) identical functions + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) { + // Support: Chrome, Safari + // Setting style to blank string required to delete "style: x !important;" + style[ name ] = ""; + style[ name ] = value; + } + + } else { + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) { + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = jQuery.camelCase( name ); + + // Make sure that we're working with the right name + name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( elem.style, origName ) ); + + // gets hook for the prefixed version + // followed by the unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + //convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Return, converting to number if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || jQuery.isNumeric( num ) ? num || 0 : val; + } + return val; + } +}); + +jQuery.each([ "height", "width" ], function( i, name ) { + jQuery.cssHooks[ name ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + // certain elements can have dimension info if we invisibly show them + // however, it must have a current display style that would benefit from this + return elem.offsetWidth === 0 && rdisplayswap.test( jQuery.css( elem, "display" ) ) ? + jQuery.swap( elem, cssShow, function() { + return getWidthOrHeight( elem, name, extra ); + }) : + getWidthOrHeight( elem, name, extra ); + } + }, + + set: function( elem, value, extra ) { + var styles = extra && getStyles( elem ); + return setPositiveNumber( elem, value, extra ? + augmentWidthOrHeight( + elem, + name, + extra, + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + styles + ) : 0 + ); + } + }; +}); + +// Support: Android 2.3 +jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight, + function( elem, computed ) { + if ( computed ) { + // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right + // Work around by temporarily setting element display to inline-block + return jQuery.swap( elem, { "display": "inline-block" }, + curCSS, [ elem, "marginRight" ] ); + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each({ + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // assumes a single number if not a string + parts = typeof value === "string" ? value.split(" ") : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( !rmargin.test( prefix ) ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +}); + +jQuery.fn.extend({ + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( jQuery.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + }, + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each(function() { + if ( isHidden( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + }); + } +}); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || "swing"; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + if ( tween.elem[ tween.prop ] != null && + (!tween.elem.style || tween.elem.style[ tween.prop ] == null) ) { + return tween.elem[ tween.prop ]; + } + + // passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails + // so, simple values such as "10px" are parsed to Float. + // complex values such as "rotate(1rad)" are returned as is. + result = jQuery.css( tween.elem, tween.prop, "" ); + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + // use step hook for back compat - use cssHook if its there - use .style if its + // available and use plain properties where available + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.style && ( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null || jQuery.cssHooks[ tween.prop ] ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE9 +// Panic based approach to setting things on disconnected nodes + +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + } +}; + +jQuery.fx = Tween.prototype.init; + +// Back Compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, timerId, + rfxtypes = /^(?:toggle|show|hide)$/, + rfxnum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ), + rrun = /queueHooks$/, + animationPrefilters = [ defaultPrefilter ], + tweeners = { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ), + target = tween.cur(), + parts = rfxnum.exec( value ), + unit = parts && parts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + start = ( jQuery.cssNumber[ prop ] || unit !== "px" && +target ) && + rfxnum.exec( jQuery.css( tween.elem, prop ) ), + scale = 1, + maxIterations = 20; + + if ( start && start[ 3 ] !== unit ) { + // Trust units reported by jQuery.css + unit = unit || start[ 3 ]; + + // Make sure we update the tween properties later on + parts = parts || []; + + // Iteratively approximate from a nonzero starting point + start = +target || 1; + + do { + // If previous iteration zeroed out, double until we get *something* + // Use a string for doubling factor so we don't accidentally see scale as unchanged below + scale = scale || ".5"; + + // Adjust and apply + start = start / scale; + jQuery.style( tween.elem, prop, start + unit ); + + // Update scale, tolerating zero or NaN from tween.cur() + // And breaking the loop if scale is unchanged or perfect, or if we've just had enough + } while ( scale !== (scale = tween.cur() / target) && scale !== 1 && --maxIterations ); + } + + // Update tween properties + if ( parts ) { + start = tween.start = +start || +target || 0; + tween.unit = unit; + // If a +=/-= token was provided, we're doing a relative animation + tween.end = parts[ 1 ] ? + start + ( parts[ 1 ] + 1 ) * parts[ 2 ] : + +parts[ 2 ]; + } + + return tween; + } ] + }; + +// Animations created synchronously will run synchronously +function createFxNow() { + setTimeout(function() { + fxNow = undefined; + }); + return ( fxNow = jQuery.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // if we include width, step value is 1 to do all cssExpand values, + // if we don't include width, step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4 ; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( tweeners[ prop ] || [] ).concat( tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( (tween = collection[ index ].call( animation, prop, value )) ) { + + // we're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + /* jshint validthis: true */ + var prop, value, toggle, tween, hooks, oldfire, display, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHidden( elem ), + dataShow = data_priv.get( elem, "fxshow" ); + + // handle queue: false promises + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always(function() { + // doing this makes sure that the complete handler will be called + // before this completes + anim.always(function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + }); + }); + } + + // height/width overflow pass + if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) { + // Make sure that nothing sneaks out + // Record all 3 overflow attributes because IE9-10 do not + // change the overflow attribute when overflowX and + // overflowY are set to the same value + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Set display property to inline-block for height/width + // animations on inline elements that are having width/height animated + display = jQuery.css( elem, "display" ); + // Get default display if display is currently "none" + if ( display === "none" ) { + display = defaultDisplay( elem.nodeName ); + } + if ( display === "inline" && + jQuery.css( elem, "float" ) === "none" ) { + + style.display = "inline-block"; + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always(function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + }); + } + + // show/hide pass + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.exec( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // If there is dataShow left over from a stopped hide or show and we are going to proceed with show, we should pretend to be hidden + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + if ( !jQuery.isEmptyObject( orig ) ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = data_priv.access( elem, "fxshow", {} ); + } + + // store state if its toggle - enables .stop().toggle() to "reverse" + if ( toggle ) { + dataShow.hidden = !hidden; + } + if ( hidden ) { + jQuery( elem ).show(); + } else { + anim.done(function() { + jQuery( elem ).hide(); + }); + } + anim.done(function() { + var prop; + + data_priv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + }); + for ( prop in orig ) { + tween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = tween.start; + if ( hidden ) { + tween.end = tween.start; + tween.start = prop === "width" || prop === "height" ? 1 : 0; + } + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = jQuery.camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( jQuery.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // not quite $.extend, this wont overwrite keys already present. + // also - reusing 'index' from above because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = animationPrefilters.length, + deferred = jQuery.Deferred().always( function() { + // don't match elem in the :animated selector + delete tick.elem; + }), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + // archaic crash bug won't allow us to use 1 - ( 0.5 || 0 ) (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length ; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ]); + + if ( percent < 1 && length ) { + return remaining; + } else { + deferred.resolveWith( elem, [ animation ] ); + return false; + } + }, + animation = deferred.promise({ + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { specialEasing: {} }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + // if we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length ; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // resolve when we played the last frame + // otherwise, reject + if ( gotoEnd ) { + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + }), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length ; index++ ) { + result = animationPrefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( jQuery.isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + }) + ); + + // attach callbacks from options + return animation.progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweener: function( props, callback ) { + if ( jQuery.isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.split(" "); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length ; index++ ) { + prop = props[ index ]; + tweeners[ prop ] = tweeners[ prop ] || []; + tweeners[ prop ].unshift( callback ); + } + }, + + prefilter: function( callback, prepend ) { + if ( prepend ) { + animationPrefilters.unshift( callback ); + } else { + animationPrefilters.push( callback ); + } + } +}); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + jQuery.isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing + }; + + opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration : + opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default; + + // normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( jQuery.isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend({ + fadeTo: function( speed, to, easing, callback ) { + + // show any hidden elements after setting opacity to 0 + return this.filter( isHidden ).css( "opacity", 0 ).show() + + // animate to the value specified + .end().animate({ opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || data_priv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue && type !== false ) { + this.queue( type || "fx", [] ); + } + + return this.each(function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = data_priv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && (type == null || timers[ index ].queue === type) ) { + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // start the next in the queue if the last step wasn't forced + // timers currently will call their complete callbacks, which will dequeue + // but only if they were gotoEnd + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + }); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each(function() { + var index, + data = data_priv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // enable finishing flag on private data + data.finish = true; + + // empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // turn off finishing flag + delete data.finish; + }); + } +}); + +jQuery.each([ "toggle", "show", "hide" ], function( i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +}); + +// Generate shortcuts for custom animations +jQuery.each({ + slideDown: genFx("show"), + slideUp: genFx("hide"), + slideToggle: genFx("toggle"), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +}); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = jQuery.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + // Checks the timer has not already been removed + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + if ( timer() ) { + jQuery.fx.start(); + } else { + jQuery.timers.pop(); + } +}; + +jQuery.fx.interval = 13; + +jQuery.fx.start = function() { + if ( !timerId ) { + timerId = setInterval( jQuery.fx.tick, jQuery.fx.interval ); + } +}; + +jQuery.fx.stop = function() { + clearInterval( timerId ); + timerId = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = setTimeout( next, time ); + hooks.stop = function() { + clearTimeout( timeout ); + }; + }); +}; + + +(function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: iOS 5.1, Android 4.x, Android 2.3 + // Check the default checkbox/radio value ("" on old WebKit; "on" elsewhere) + support.checkOn = input.value !== ""; + + // Must access the parent to make an option select properly + // Support: IE9, IE10 + support.optSelected = opt.selected; + + // Make sure that the options inside disabled selects aren't marked as disabled + // (WebKit marks them as disabled) + select.disabled = true; + support.optDisabled = !opt.disabled; + + // Check if an input maintains its value after becoming a radio + // Support: IE9, IE10 + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +})(); + + +var nodeHook, boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend({ + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each(function() { + jQuery.removeAttr( this, name ); + }); + } +}); + +jQuery.extend({ + attr: function( elem, name, value ) { + var hooks, ret, + nType = elem.nodeType; + + // don't get/set attributes on text, comment and attribute nodes + if ( !elem || nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === strundefined ) { + return jQuery.prop( elem, name, value ); + } + + // All attributes are lowercase + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + name = name.toLowerCase(); + hooks = jQuery.attrHooks[ name ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook ); + } + + if ( value !== undefined ) { + + if ( value === null ) { + jQuery.removeAttr( elem, name ); + + } else if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) { + return ret; + + } else { + elem.setAttribute( name, value + "" ); + return value; + } + + } else if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) { + return ret; + + } else { + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? + undefined : + ret; + } + }, + + removeAttr: function( elem, value ) { + var name, propName, + i = 0, + attrNames = value && value.match( rnotwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( (name = attrNames[i++]) ) { + propName = jQuery.propFix[ name ] || name; + + // Boolean attributes get special treatment (#10870) + if ( jQuery.expr.match.bool.test( name ) ) { + // Set corresponding property to false + elem[ propName ] = false; + } + + elem.removeAttribute( name ); + } + } + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + jQuery.nodeName( elem, "input" ) ) { + // Setting the type on a radio button after the value resets the value in IE6-9 + // Reset value to default in case type is set after value during creation + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + } +}); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle; + if ( !isXML ) { + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ name ]; + attrHandle[ name ] = ret; + ret = getter( elem, name, isXML ) != null ? + name.toLowerCase() : + null; + attrHandle[ name ] = handle; + } + return ret; + }; +}); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i; + +jQuery.fn.extend({ + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each(function() { + delete this[ jQuery.propFix[ name ] || name ]; + }); + } +}); + +jQuery.extend({ + propFix: { + "for": "htmlFor", + "class": "className" + }, + + prop: function( elem, name, value ) { + var ret, hooks, notxml, + nType = elem.nodeType; + + // don't get/set properties on text, comment and attribute nodes + if ( !elem || nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + notxml = nType !== 1 || !jQuery.isXMLDoc( elem ); + + if ( notxml ) { + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + return hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ? + ret : + ( elem[ name ] = value ); + + } else { + return hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ? + ret : + elem[ name ]; + } + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + return elem.hasAttribute( "tabindex" ) || rfocusable.test( elem.nodeName ) || elem.href ? + elem.tabIndex : + -1; + } + } + } +}); + +// Support: IE9+ +// Selectedness for an option in an optgroup can be inaccurate +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + } + }; +} + +jQuery.each([ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +}); + + + + +var rclass = /[\t\r\n\f]/g; + +jQuery.fn.extend({ + addClass: function( value ) { + var classes, elem, cur, clazz, j, finalValue, + proceed = typeof value === "string" && value, + i = 0, + len = this.length; + + if ( jQuery.isFunction( value ) ) { + return this.each(function( j ) { + jQuery( this ).addClass( value.call( this, j, this.className ) ); + }); + } + + if ( proceed ) { + // The disjunction here is for better compressibility (see removeClass) + classes = ( value || "" ).match( rnotwhite ) || []; + + for ( ; i < len; i++ ) { + elem = this[ i ]; + cur = elem.nodeType === 1 && ( elem.className ? + ( " " + elem.className + " " ).replace( rclass, " " ) : + " " + ); + + if ( cur ) { + j = 0; + while ( (clazz = classes[j++]) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // only assign if different to avoid unneeded rendering. + finalValue = jQuery.trim( cur ); + if ( elem.className !== finalValue ) { + elem.className = finalValue; + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, clazz, j, finalValue, + proceed = arguments.length === 0 || typeof value === "string" && value, + i = 0, + len = this.length; + + if ( jQuery.isFunction( value ) ) { + return this.each(function( j ) { + jQuery( this ).removeClass( value.call( this, j, this.className ) ); + }); + } + if ( proceed ) { + classes = ( value || "" ).match( rnotwhite ) || []; + + for ( ; i < len; i++ ) { + elem = this[ i ]; + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( elem.className ? + ( " " + elem.className + " " ).replace( rclass, " " ) : + "" + ); + + if ( cur ) { + j = 0; + while ( (clazz = classes[j++]) ) { + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) >= 0 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // only assign if different to avoid unneeded rendering. + finalValue = value ? jQuery.trim( cur ) : ""; + if ( elem.className !== finalValue ) { + elem.className = finalValue; + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value; + + if ( typeof stateVal === "boolean" && type === "string" ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( jQuery.isFunction( value ) ) { + return this.each(function( i ) { + jQuery( this ).toggleClass( value.call(this, i, this.className, stateVal), stateVal ); + }); + } + + return this.each(function() { + if ( type === "string" ) { + // toggle individual class names + var className, + i = 0, + self = jQuery( this ), + classNames = value.match( rnotwhite ) || []; + + while ( (className = classNames[ i++ ]) ) { + // check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( type === strundefined || type === "boolean" ) { + if ( this.className ) { + // store className if set + data_priv.set( this, "__className__", this.className ); + } + + // If the element has a class name or if we're passed "false", + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + this.className = this.className || value === false ? "" : data_priv.get( this, "__className__" ) || ""; + } + }); + }, + + hasClass: function( selector ) { + var className = " " + selector + " ", + i = 0, + l = this.length; + for ( ; i < l; i++ ) { + if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) >= 0 ) { + return true; + } + } + + return false; + } +}); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend({ + val: function( value ) { + var hooks, ret, isFunction, + elem = this[0]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && "get" in hooks && (ret = hooks.get( elem, "value" )) !== undefined ) { + return ret; + } + + ret = elem.value; + + return typeof ret === "string" ? + // handle most common string cases + ret.replace(rreturn, "") : + // handle cases where value is null/undef or number + ret == null ? "" : ret; + } + + return; + } + + isFunction = jQuery.isFunction( value ); + + return this.each(function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( isFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( jQuery.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + }); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !("set" in hooks) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + }); + } +}); + +jQuery.extend({ + valHooks: { + select: { + get: function( elem ) { + var value, option, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one" || index < 0, + values = one ? null : [], + max = one ? index + 1 : options.length, + i = index < 0 ? + max : + one ? index : 0; + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // IE6-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + // Don't return options that are disabled or in a disabled optgroup + ( support.optDisabled ? !option.disabled : option.getAttribute( "disabled" ) === null ) && + ( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + if ( (option.selected = jQuery.inArray( jQuery(option).val(), values ) >= 0) ) { + optionSet = true; + } + } + + // force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +}); + +// Radios and checkboxes getter/setter +jQuery.each([ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( jQuery.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery(elem).val(), value ) >= 0 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + // Support: Webkit + // "" is returned instead of "on" if a value isn't specified + return elem.getAttribute("value") === null ? "on" : elem.value; + }; + } +}); + + + + +// Return jQuery for attributes-only inclusion + + +jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " + + "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " + + "change select submit keydown keypress keyup error contextmenu").split(" "), function( i, name ) { + + // Handle event binding + jQuery.fn[ name ] = function( data, fn ) { + return arguments.length > 0 ? + this.on( name, null, data, fn ) : + this.trigger( name ); + }; +}); + +jQuery.fn.extend({ + hover: function( fnOver, fnOut ) { + return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver ); + }, + + bind: function( types, data, fn ) { + return this.on( types, null, data, fn ); + }, + unbind: function( types, fn ) { + return this.off( types, null, fn ); + }, + + delegate: function( selector, types, data, fn ) { + return this.on( types, selector, data, fn ); + }, + undelegate: function( selector, types, fn ) { + // ( namespace ) or ( selector, types [, fn] ) + return arguments.length === 1 ? this.off( selector, "**" ) : this.off( types, selector || "**", fn ); + } +}); + + +var nonce = jQuery.now(); + +var rquery = (/\?/); + + + +// Support: Android 2.3 +// Workaround failure to string-cast null input +jQuery.parseJSON = function( data ) { + return JSON.parse( data + "" ); +}; + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml, tmp; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE9 + try { + tmp = new DOMParser(); + xml = tmp.parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + // Document location + ajaxLocParts, + ajaxLocation, + + rhash = /#.*$/, + rts = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + rurl = /^([\w.+-]+:)(?:\/\/(?:[^\/?#]*@|)([^\/?#:]*)(?::(\d+)|)|)/, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat("*"); + +// #8138, IE may throw an exception when accessing +// a field from window.location if document.domain has been set +try { + ajaxLocation = location.href; +} catch( e ) { + // Use the href attribute of an A element + // since IE will modify it given document.location + ajaxLocation = document.createElement( "a" ); + ajaxLocation.href = ""; + ajaxLocation = ajaxLocation.href; +} + +// Segment location into parts +ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || []; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnotwhite ) || []; + + if ( jQuery.isFunction( func ) ) { + // For each dataType in the dataTypeExpression + while ( (dataType = dataTypes[i++]) ) { + // Prepend if requested + if ( dataType[0] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + (structure[ dataType ] = structure[ dataType ] || []).unshift( func ); + + // Otherwise append + } else { + (structure[ dataType ] = structure[ dataType ] || []).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + }); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || (deep = {}) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader("Content-Type"); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[0] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s[ "throws" ] ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { state: "parsererror", error: conv ? e : "No conversion from " + prev + " to " + current }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend({ + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: ajaxLocation, + type: "GET", + isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /xml/, + html: /html/, + json: /json/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": jQuery.parseJSON, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + // URL without anti-cache param + cacheURL, + // Response headers + responseHeadersString, + responseHeaders, + // timeout handle + timeoutTimer, + // Cross-domain detection vars + parts, + // To know if global events are to be dispatched + fireGlobals, + // Loop variable + i, + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + // Callbacks context + callbackContext = s.context || s, + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks("once memory"), + // Status-dependent callbacks + statusCode = s.statusCode || {}, + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + // The jqXHR state + state = 0, + // Default abort message + strAbort = "canceled", + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( state === 2 ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( (match = rheaders.exec( responseHeadersString )) ) { + responseHeaders[ match[1].toLowerCase() ] = match[ 2 ]; + } + } + match = responseHeaders[ key.toLowerCase() ]; + } + return match == null ? null : match; + }, + + // Raw string + getAllResponseHeaders: function() { + return state === 2 ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + var lname = name.toLowerCase(); + if ( !state ) { + name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( !state ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( state < 2 ) { + for ( code in map ) { + // Lazy-add the new callback in a way that preserves old ones + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } else { + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ).complete = completeDeferred.add; + jqXHR.success = jqXHR.done; + jqXHR.error = jqXHR.fail; + + // Remove hash character (#7531: and string promotion) + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || ajaxLocation ) + "" ).replace( rhash, "" ) + .replace( rprotocol, ajaxLocParts[ 1 ] + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ]; + + // A cross-domain request is in order when we have a protocol:host:port mismatch + if ( s.crossDomain == null ) { + parts = rurl.exec( s.url.toLowerCase() ); + s.crossDomain = !!( parts && + ( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] || + ( parts[ 3 ] || ( parts[ 1 ] === "http:" ? "80" : "443" ) ) !== + ( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? "80" : "443" ) ) ) + ); + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( state === 2 ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + fireGlobals = s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger("ajaxStart"); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + cacheURL = s.url; + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // If data is available, append data to url + if ( s.data ) { + cacheURL = ( s.url += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data ); + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add anti-cache in url if needed + if ( s.cache === false ) { + s.url = rts.test( cacheURL ) ? + + // If there is already a '_' parameter, set its value + cacheURL.replace( rts, "$1_=" + nonce++ ) : + + // Otherwise add one to the end + cacheURL + ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + nonce++; + } + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[0] ] ? + s.accepts[ s.dataTypes[0] ] + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) { + // Abort if not done already and return + return jqXHR.abort(); + } + + // aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + for ( i in { success: 1, error: 1, complete: 1 } ) { + jqXHR[ i ]( s[ i ] ); + } + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = setTimeout(function() { + jqXHR.abort("timeout"); + }, s.timeout ); + } + + try { + state = 1; + transport.send( requestHeaders, done ); + } catch ( e ) { + // Propagate exception as error if not done + if ( state < 2 ) { + done( -1, e ); + // Simply rethrow otherwise + } else { + throw e; + } + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Called once + if ( state === 2 ) { + return; + } + + // State is "done" now + state = 2; + + // Clear timeout if it exists + if ( timeoutTimer ) { + clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader("Last-Modified"); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader("etag"); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + // We extract error from statusText + // then normalize statusText and status for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger("ajaxStop"); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +}); + +jQuery.each( [ "get", "post" ], function( i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + // shift arguments if data argument was omitted + if ( jQuery.isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + return jQuery.ajax({ + url: url, + type: method, + dataType: type, + data: data, + success: callback + }); + }; +}); + +// Attach a bunch of functions for handling common AJAX events +jQuery.each( [ "ajaxStart", "ajaxStop", "ajaxComplete", "ajaxError", "ajaxSuccess", "ajaxSend" ], function( i, type ) { + jQuery.fn[ type ] = function( fn ) { + return this.on( type, fn ); + }; +}); + + +jQuery._evalUrl = function( url ) { + return jQuery.ajax({ + url: url, + type: "GET", + dataType: "script", + async: false, + global: false, + "throws": true + }); +}; + + +jQuery.fn.extend({ + wrapAll: function( html ) { + var wrap; + + if ( jQuery.isFunction( html ) ) { + return this.each(function( i ) { + jQuery( this ).wrapAll( html.call(this, i) ); + }); + } + + if ( this[ 0 ] ) { + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map(function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + }).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( jQuery.isFunction( html ) ) { + return this.each(function( i ) { + jQuery( this ).wrapInner( html.call(this, i) ); + }); + } + + return this.each(function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + }); + }, + + wrap: function( html ) { + var isFunction = jQuery.isFunction( html ); + + return this.each(function( i ) { + jQuery( this ).wrapAll( isFunction ? html.call(this, i) : html ); + }); + }, + + unwrap: function() { + return this.parent().each(function() { + if ( !jQuery.nodeName( this, "body" ) ) { + jQuery( this ).replaceWith( this.childNodes ); + } + }).end(); + } +}); + + +jQuery.expr.filters.hidden = function( elem ) { + // Support: Opera <= 12.12 + // Opera reports offsetWidths and offsetHeights less than zero on some elements + return elem.offsetWidth <= 0 && elem.offsetHeight <= 0; +}; +jQuery.expr.filters.visible = function( elem ) { + return !jQuery.expr.filters.hidden( elem ); +}; + + + + +var r20 = /%20/g, + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( jQuery.isArray( obj ) ) { + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + // Item is non-scalar (array or object), encode its numeric index. + buildParams( prefix + "[" + ( typeof v === "object" ? i : "" ) + "]", v, traditional, add ); + } + }); + + } else if ( !traditional && jQuery.type( obj ) === "object" ) { + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, value ) { + // If value is a function, invoke it and return its value + value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value ); + s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value ); + }; + + // Set traditional to true for jQuery <= 1.3.2 behavior. + if ( traditional === undefined ) { + traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + }); + + } else { + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ).replace( r20, "+" ); +}; + +jQuery.fn.extend({ + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map(function() { + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + }) + .filter(function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + }) + .map(function( i, elem ) { + var val = jQuery( this ).val(); + + return val == null ? + null : + jQuery.isArray( val ) ? + jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + }) : + { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + }).get(); + } +}); + + +jQuery.ajaxSettings.xhr = function() { + try { + return new XMLHttpRequest(); + } catch( e ) {} +}; + +var xhrId = 0, + xhrCallbacks = {}, + xhrSuccessStatus = { + // file protocol always yields status code 0, assume 200 + 0: 200, + // Support: IE9 + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +// Support: IE9 +// Open requests must be manually aborted on unload (#5280) +if ( window.ActiveXObject ) { + jQuery( window ).on( "unload", function() { + for ( var key in xhrCallbacks ) { + xhrCallbacks[ key ](); + } + }); +} + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport(function( options ) { + var callback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(), + id = ++xhrId; + + xhr.open( options.type, options.url, options.async, options.username, options.password ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers["X-Requested-With"] ) { + headers["X-Requested-With"] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + delete xhrCallbacks[ id ]; + callback = xhr.onload = xhr.onerror = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + complete( + // file: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + // Support: IE9 + // Accessing binary-data responseText throws an exception + // (#11426) + typeof xhr.responseText === "string" ? { + text: xhr.responseText + } : undefined, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + xhr.onerror = callback("error"); + + // Create the abort callback + callback = xhrCallbacks[ id ] = callback("abort"); + + // Do send the request + // This may raise an exception which is actually + // handled in jQuery.ajax (so no try/catch here) + xhr.send( options.hasContent && options.data || null ); + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +}); + + + + +// Install script dataType +jQuery.ajaxSetup({ + accepts: { + script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /(?:java|ecma)script/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +}); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +}); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + // This transport only deals with cross domain requests + if ( s.crossDomain ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery("<script>").prop({ + async: true, + charset: s.scriptCharset, + src: s.url + }).on( + "load error", + callback = function( evt ) { + script.remove(); + callback = null; + if ( evt ) { + complete( evt.type === "error" ? 404 : 200, evt.type ); + } + } + ); + document.head.appendChild( script[ 0 ] ); + }, + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +}); + + + + +var oldCallbacks = [], + rjsonp = /(=)\?(?=&|$)|\?\?/; + +// Default jsonp settings +jQuery.ajaxSetup({ + jsonp: "callback", + jsonpCallback: function() { + var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) ); + this[ callback ] = true; + return callback; + } +}); + +// Detect, normalize options and install callbacks for jsonp requests +jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) { + + var callbackName, overwritten, responseContainer, + jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ? + "url" : + typeof s.data === "string" && !( s.contentType || "" ).indexOf("application/x-www-form-urlencoded") && rjsonp.test( s.data ) && "data" + ); + + // Handle iff the expected data type is "jsonp" or we have a parameter to set + if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) { + + // Get callback name, remembering preexisting value associated with it + callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ? + s.jsonpCallback() : + s.jsonpCallback; + + // Insert callback into url or form data + if ( jsonProp ) { + s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName ); + } else if ( s.jsonp !== false ) { + s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName; + } + + // Use data converter to retrieve json after script execution + s.converters["script json"] = function() { + if ( !responseContainer ) { + jQuery.error( callbackName + " was not called" ); + } + return responseContainer[ 0 ]; + }; + + // force json dataType + s.dataTypes[ 0 ] = "json"; + + // Install callback + overwritten = window[ callbackName ]; + window[ callbackName ] = function() { + responseContainer = arguments; + }; + + // Clean-up function (fires after converters) + jqXHR.always(function() { + // Restore preexisting value + window[ callbackName ] = overwritten; + + // Save back as free + if ( s[ callbackName ] ) { + // make sure that re-using the options doesn't screw things around + s.jsonpCallback = originalSettings.jsonpCallback; + + // save the callback name for future use + oldCallbacks.push( callbackName ); + } + + // Call if it was a function and we have a response + if ( responseContainer && jQuery.isFunction( overwritten ) ) { + overwritten( responseContainer[ 0 ] ); + } + + responseContainer = overwritten = undefined; + }); + + // Delegate to script + return "script"; + } +}); + + + + +// data: string of html +// context (optional): If specified, the fragment will be created in this context, defaults to document +// keepScripts (optional): If true, will include scripts passed in the html string +jQuery.parseHTML = function( data, context, keepScripts ) { + if ( !data || typeof data !== "string" ) { + return null; + } + if ( typeof context === "boolean" ) { + keepScripts = context; + context = false; + } + context = context || document; + + var parsed = rsingleTag.exec( data ), + scripts = !keepScripts && []; + + // Single tag + if ( parsed ) { + return [ context.createElement( parsed[1] ) ]; + } + + parsed = jQuery.buildFragment( [ data ], context, scripts ); + + if ( scripts && scripts.length ) { + jQuery( scripts ).remove(); + } + + return jQuery.merge( [], parsed.childNodes ); +}; + + +// Keep a copy of the old load method +var _load = jQuery.fn.load; + +/** + * Load a url into a page + */ +jQuery.fn.load = function( url, params, callback ) { + if ( typeof url !== "string" && _load ) { + return _load.apply( this, arguments ); + } + + var selector, type, response, + self = this, + off = url.indexOf(" "); + + if ( off >= 0 ) { + selector = url.slice( off ); + url = url.slice( 0, off ); + } + + // If it's a function + if ( jQuery.isFunction( params ) ) { + + // We assume that it's the callback + callback = params; + params = undefined; + + // Otherwise, build a param string + } else if ( params && typeof params === "object" ) { + type = "POST"; + } + + // If we have elements to modify, make the request + if ( self.length > 0 ) { + jQuery.ajax({ + url: url, + + // if "type" variable is undefined, then "GET" method will be used + type: type, + dataType: "html", + data: params + }).done(function( responseText ) { + + // Save response for use in complete callback + response = arguments; + + self.html( selector ? + + // If a selector was specified, locate the right elements in a dummy div + // Exclude scripts to avoid IE 'Permission Denied' errors + jQuery("<div>").append( jQuery.parseHTML( responseText ) ).find( selector ) : + + // Otherwise use the full result + responseText ); + + }).complete( callback && function( jqXHR, status ) { + self.each( callback, response || [ jqXHR.responseText, status, jqXHR ] ); + }); + } + + return this; +}; + + + + +jQuery.expr.filters.animated = function( elem ) { + return jQuery.grep(jQuery.timers, function( fn ) { + return elem === fn.elem; + }).length; +}; + + + + +var docElem = window.document.documentElement; + +/** + * Gets a window from an element + */ +function getWindow( elem ) { + return jQuery.isWindow( elem ) ? elem : elem.nodeType === 9 && elem.defaultView; +} + +jQuery.offset = { + setOffset: function( elem, options, i ) { + var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition, + position = jQuery.css( elem, "position" ), + curElem = jQuery( elem ), + props = {}; + + // Set position first, in-case top/left are set even on static elem + if ( position === "static" ) { + elem.style.position = "relative"; + } + + curOffset = curElem.offset(); + curCSSTop = jQuery.css( elem, "top" ); + curCSSLeft = jQuery.css( elem, "left" ); + calculatePosition = ( position === "absolute" || position === "fixed" ) && + ( curCSSTop + curCSSLeft ).indexOf("auto") > -1; + + // Need to be able to calculate position if either top or left is auto and position is either absolute or fixed + if ( calculatePosition ) { + curPosition = curElem.position(); + curTop = curPosition.top; + curLeft = curPosition.left; + + } else { + curTop = parseFloat( curCSSTop ) || 0; + curLeft = parseFloat( curCSSLeft ) || 0; + } + + if ( jQuery.isFunction( options ) ) { + options = options.call( elem, i, curOffset ); + } + + if ( options.top != null ) { + props.top = ( options.top - curOffset.top ) + curTop; + } + if ( options.left != null ) { + props.left = ( options.left - curOffset.left ) + curLeft; + } + + if ( "using" in options ) { + options.using.call( elem, props ); + + } else { + curElem.css( props ); + } + } +}; + +jQuery.fn.extend({ + offset: function( options ) { + if ( arguments.length ) { + return options === undefined ? + this : + this.each(function( i ) { + jQuery.offset.setOffset( this, options, i ); + }); + } + + var docElem, win, + elem = this[ 0 ], + box = { top: 0, left: 0 }, + doc = elem && elem.ownerDocument; + + if ( !doc ) { + return; + } + + docElem = doc.documentElement; + + // Make sure it's not a disconnected DOM node + if ( !jQuery.contains( docElem, elem ) ) { + return box; + } + + // If we don't have gBCR, just use 0,0 rather than error + // BlackBerry 5, iOS 3 (original iPhone) + if ( typeof elem.getBoundingClientRect !== strundefined ) { + box = elem.getBoundingClientRect(); + } + win = getWindow( doc ); + return { + top: box.top + win.pageYOffset - docElem.clientTop, + left: box.left + win.pageXOffset - docElem.clientLeft + }; + }, + + position: function() { + if ( !this[ 0 ] ) { + return; + } + + var offsetParent, offset, + elem = this[ 0 ], + parentOffset = { top: 0, left: 0 }; + + // Fixed elements are offset from window (parentOffset = {top:0, left: 0}, because it is its only offset parent + if ( jQuery.css( elem, "position" ) === "fixed" ) { + // We assume that getBoundingClientRect is available when computed position is fixed + offset = elem.getBoundingClientRect(); + + } else { + // Get *real* offsetParent + offsetParent = this.offsetParent(); + + // Get correct offsets + offset = this.offset(); + if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) { + parentOffset = offsetParent.offset(); + } + + // Add offsetParent borders + parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ); + parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true ); + } + + // Subtract parent offsets and element margins + return { + top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ), + left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true ) + }; + }, + + offsetParent: function() { + return this.map(function() { + var offsetParent = this.offsetParent || docElem; + + while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) && jQuery.css( offsetParent, "position" ) === "static" ) ) { + offsetParent = offsetParent.offsetParent; + } + + return offsetParent || docElem; + }); + } +}); + +// Create scrollLeft and scrollTop methods +jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) { + var top = "pageYOffset" === prop; + + jQuery.fn[ method ] = function( val ) { + return access( this, function( elem, method, val ) { + var win = getWindow( elem ); + + if ( val === undefined ) { + return win ? win[ prop ] : elem[ method ]; + } + + if ( win ) { + win.scrollTo( + !top ? val : window.pageXOffset, + top ? val : window.pageYOffset + ); + + } else { + elem[ method ] = val; + } + }, method, val, arguments.length, null ); + }; +}); + +// Add the top/left cssHooks using jQuery.fn.position +// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084 +// getComputedStyle returns percent when specified for top/left/bottom/right +// rather than make the css module depend on the offset module, we just check for it here +jQuery.each( [ "top", "left" ], function( i, prop ) { + jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition, + function( elem, computed ) { + if ( computed ) { + computed = curCSS( elem, prop ); + // if curCSS returns percentage, fallback to offset + return rnumnonpx.test( computed ) ? + jQuery( elem ).position()[ prop ] + "px" : + computed; + } + } + ); +}); + + +// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods +jQuery.each( { Height: "height", Width: "width" }, function( name, type ) { + jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, function( defaultExtra, funcName ) { + // margin is only for outerHeight, outerWidth + jQuery.fn[ funcName ] = function( margin, value ) { + var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ), + extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" ); + + return access( this, function( elem, type, value ) { + var doc; + + if ( jQuery.isWindow( elem ) ) { + // As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there + // isn't a whole lot we can do. See pull request at this URL for discussion: + // https://github.com/jquery/jquery/pull/764 + return elem.document.documentElement[ "client" + name ]; + } + + // Get document width or height + if ( elem.nodeType === 9 ) { + doc = elem.documentElement; + + // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height], + // whichever is greatest + return Math.max( + elem.body[ "scroll" + name ], doc[ "scroll" + name ], + elem.body[ "offset" + name ], doc[ "offset" + name ], + doc[ "client" + name ] + ); + } + + return value === undefined ? + // Get width or height on the element, requesting but not forcing parseFloat + jQuery.css( elem, type, extra ) : + + // Set width or height on the element + jQuery.style( elem, type, value, extra ); + }, type, chainable ? margin : undefined, chainable, null ); + }; + }); +}); + + +// The number of elements contained in the matched element set +jQuery.fn.size = function() { + return this.length; +}; + +jQuery.fn.andSelf = jQuery.fn.addBack; + + + + +// Register as a named AMD module, since jQuery can be concatenated with other +// files that may use define, but not via a proper concatenation script that +// understands anonymous AMD modules. A named AMD is safest and most robust +// way to register. Lowercase jquery is used because AMD module names are +// derived from file names, and jQuery is normally delivered in a lowercase +// file name. Do this after creating the global so that if an AMD module wants +// to call noConflict to hide this version of jQuery, it will work. +if ( typeof define === "function" && define.amd ) { + define( "jquery", [], function() { + return jQuery; + }); +} + + + + +var + // Map over jQuery in case of overwrite + _jQuery = window.jQuery, + + // Map over the $ in case of overwrite + _$ = window.$; + +jQuery.noConflict = function( deep ) { + if ( window.$ === jQuery ) { + window.$ = _$; + } + + if ( deep && window.jQuery === jQuery ) { + window.jQuery = _jQuery; + } + + return jQuery; +}; + +// Expose jQuery and $ identifiers, even in +// AMD (#7102#comment:10, https://github.com/jquery/jquery/pull/557) +// and CommonJS for browser emulators (#13566) +if ( typeof noGlobal === strundefined ) { + window.jQuery = window.$ = jQuery; +} + + + + +return jQuery; + +})); + +define("jQuery", (function (global) { + return function () { + var ret, fn; + return ret || global.$; + }; +}(this))); + +define('utils/storage',[],function(){ + var baseKey = ""; + + /* + * Simple module for storing data in the browser's local storage + */ + return { + setBaseKey: function(key) { + baseKey = key; + }, + set: function(key, value) { + key = baseKey+":"+key; + localStorage[key] = JSON.stringify(value); + }, + get: function(key, def) { + key = baseKey+":"+key; + if (localStorage[key] === undefined) return def; + try { + var v = JSON.parse(localStorage[key]); + return v == null ? def : v;; + } catch(err) { + console.error(err); + return localStorage[key] || def; + } + }, + remove: function(key) { + key = baseKey+":"+key; + localStorage.removeItem(key); + } + }; +}); +/** + * @license + * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/> + * Build: `lodash modern -o ./dist/lodash.js` + * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/> + * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE> + * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors + * Available under MIT license <http://lodash.com/license> + */ +;(function() { + + /** Used as a safe reference for `undefined` in pre ES5 environments */ + var undefined; + + /** Used to pool arrays and objects used internally */ + var arrayPool = [], + objectPool = []; + + /** Used to generate unique IDs */ + var idCounter = 0; + + /** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */ + var keyPrefix = +new Date + ''; + + /** Used as the size when optimizations are enabled for large arrays */ + var largeArraySize = 75; + + /** Used as the max size of the `arrayPool` and `objectPool` */ + var maxPoolSize = 40; + + /** Used to detect and test whitespace */ + var whitespace = ( + // whitespace + ' \t\x0B\f\xA0\ufeff' + + + // line terminators + '\n\r\u2028\u2029' + + + // unicode category "Zs" space separators + '\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000' + ); + + /** Used to match empty string literals in compiled template source */ + var reEmptyStringLeading = /\b__p \+= '';/g, + reEmptyStringMiddle = /\b(__p \+=) '' \+/g, + reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; + + /** + * Used to match ES6 template delimiters + * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-literals-string-literals + */ + var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; + + /** Used to match regexp flags from their coerced string values */ + var reFlags = /\w*$/; + + /** Used to detected named functions */ + var reFuncName = /^\s*function[ \n\r\t]+\w/; + + /** Used to match "interpolate" template delimiters */ + var reInterpolate = /<%=([\s\S]+?)%>/g; + + /** Used to match leading whitespace and zeros to be removed */ + var reLeadingSpacesAndZeros = RegExp('^[' + whitespace + ']*0+(?=.$)'); + + /** Used to ensure capturing order of template delimiters */ + var reNoMatch = /($^)/; + + /** Used to detect functions containing a `this` reference */ + var reThis = /\bthis\b/; + + /** Used to match unescaped characters in compiled string literals */ + var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g; + + /** Used to assign default `context` object properties */ + var contextProps = [ + 'Array', 'Boolean', 'Date', 'Function', 'Math', 'Number', 'Object', + 'RegExp', 'String', '_', 'attachEvent', 'clearTimeout', 'isFinite', 'isNaN', + 'parseInt', 'setTimeout' + ]; + + /** Used to make template sourceURLs easier to identify */ + var templateCounter = 0; + + /** `Object#toString` result shortcuts */ + var argsClass = '[object Arguments]', + arrayClass = '[object Array]', + boolClass = '[object Boolean]', + dateClass = '[object Date]', + funcClass = '[object Function]', + numberClass = '[object Number]', + objectClass = '[object Object]', + regexpClass = '[object RegExp]', + stringClass = '[object String]'; + + /** Used to identify object classifications that `_.clone` supports */ + var cloneableClasses = {}; + cloneableClasses[funcClass] = false; + cloneableClasses[argsClass] = cloneableClasses[arrayClass] = + cloneableClasses[boolClass] = cloneableClasses[dateClass] = + cloneableClasses[numberClass] = cloneableClasses[objectClass] = + cloneableClasses[regexpClass] = cloneableClasses[stringClass] = true; + + /** Used as an internal `_.debounce` options object */ + var debounceOptions = { + 'leading': false, + 'maxWait': 0, + 'trailing': false + }; + + /** Used as the property descriptor for `__bindData__` */ + var descriptor = { + 'configurable': false, + 'enumerable': false, + 'value': null, + 'writable': false + }; + + /** Used to determine if values are of the language type Object */ + var objectTypes = { + 'boolean': false, + 'function': true, + 'object': true, + 'number': false, + 'string': false, + 'undefined': false + }; + + /** Used to escape characters for inclusion in compiled string literals */ + var stringEscapes = { + '\\': '\\', + "'": "'", + '\n': 'n', + '\r': 'r', + '\t': 't', + '\u2028': 'u2028', + '\u2029': 'u2029' + }; + + /** Used as a reference to the global object */ + var root = (objectTypes[typeof window] && window) || this; + + /** Detect free variable `exports` */ + var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports; + + /** Detect free variable `module` */ + var freeModule = objectTypes[typeof module] && module && !module.nodeType && module; + + /** Detect the popular CommonJS extension `module.exports` */ + var moduleExports = freeModule && freeModule.exports === freeExports && freeExports; + + /** Detect free variable `global` from Node.js or Browserified code and use it as `root` */ + var freeGlobal = objectTypes[typeof global] && global; + if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal)) { + root = freeGlobal; + } + + /*--------------------------------------------------------------------------*/ + + /** + * The base implementation of `_.indexOf` without support for binary searches + * or `fromIndex` constraints. + * + * @private + * @param {Array} array The array to search. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the matched value or `-1`. + */ + function baseIndexOf(array, value, fromIndex) { + var index = (fromIndex || 0) - 1, + length = array ? array.length : 0; + + while (++index < length) { + if (array[index] === value) { + return index; + } + } + return -1; + } + + /** + * An implementation of `_.contains` for cache objects that mimics the return + * signature of `_.indexOf` by returning `0` if the value is found, else `-1`. + * + * @private + * @param {Object} cache The cache object to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns `0` if `value` is found, else `-1`. + */ + function cacheIndexOf(cache, value) { + var type = typeof value; + cache = cache.cache; + + if (type == 'boolean' || value == null) { + return cache[value] ? 0 : -1; + } + if (type != 'number' && type != 'string') { + type = 'object'; + } + var key = type == 'number' ? value : keyPrefix + value; + cache = (cache = cache[type]) && cache[key]; + + return type == 'object' + ? (cache && baseIndexOf(cache, value) > -1 ? 0 : -1) + : (cache ? 0 : -1); + } + + /** + * Adds a given value to the corresponding cache object. + * + * @private + * @param {*} value The value to add to the cache. + */ + function cachePush(value) { + var cache = this.cache, + type = typeof value; + + if (type == 'boolean' || value == null) { + cache[value] = true; + } else { + if (type != 'number' && type != 'string') { + type = 'object'; + } + var key = type == 'number' ? value : keyPrefix + value, + typeCache = cache[type] || (cache[type] = {}); + + if (type == 'object') { + (typeCache[key] || (typeCache[key] = [])).push(value); + } else { + typeCache[key] = true; + } + } + } + + /** + * Used by `_.max` and `_.min` as the default callback when a given + * collection is a string value. + * + * @private + * @param {string} value The character to inspect. + * @returns {number} Returns the code unit of given character. + */ + function charAtCallback(value) { + return value.charCodeAt(0); + } + + /** + * Used by `sortBy` to compare transformed `collection` elements, stable sorting + * them in ascending order. + * + * @private + * @param {Object} a The object to compare to `b`. + * @param {Object} b The object to compare to `a`. + * @returns {number} Returns the sort order indicator of `1` or `-1`. + */ + function compareAscending(a, b) { + var ac = a.criteria, + bc = b.criteria, + index = -1, + length = ac.length; + + while (++index < length) { + var value = ac[index], + other = bc[index]; + + if (value !== other) { + if (value > other || typeof value == 'undefined') { + return 1; + } + if (value < other || typeof other == 'undefined') { + return -1; + } + } + } + // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications + // that causes it, under certain circumstances, to return the same value for + // `a` and `b`. See https://github.com/jashkenas/underscore/pull/1247 + // + // This also ensures a stable sort in V8 and other engines. + // See http://code.google.com/p/v8/issues/detail?id=90 + return a.index - b.index; + } + + /** + * Creates a cache object to optimize linear searches of large arrays. + * + * @private + * @param {Array} [array=[]] The array to search. + * @returns {null|Object} Returns the cache object or `null` if caching should not be used. + */ + function createCache(array) { + var index = -1, + length = array.length, + first = array[0], + mid = array[(length / 2) | 0], + last = array[length - 1]; + + if (first && typeof first == 'object' && + mid && typeof mid == 'object' && last && typeof last == 'object') { + return false; + } + var cache = getObject(); + cache['false'] = cache['null'] = cache['true'] = cache['undefined'] = false; + + var result = getObject(); + result.array = array; + result.cache = cache; + result.push = cachePush; + + while (++index < length) { + result.push(array[index]); + } + return result; + } + + /** + * Used by `template` to escape characters for inclusion in compiled + * string literals. + * + * @private + * @param {string} match The matched character to escape. + * @returns {string} Returns the escaped character. + */ + function escapeStringChar(match) { + return '\\' + stringEscapes[match]; + } + + /** + * Gets an array from the array pool or creates a new one if the pool is empty. + * + * @private + * @returns {Array} The array from the pool. + */ + function getArray() { + return arrayPool.pop() || []; + } + + /** + * Gets an object from the object pool or creates a new one if the pool is empty. + * + * @private + * @returns {Object} The object from the pool. + */ + function getObject() { + return objectPool.pop() || { + 'array': null, + 'cache': null, + 'criteria': null, + 'false': false, + 'index': 0, + 'null': false, + 'number': null, + 'object': null, + 'push': null, + 'string': null, + 'true': false, + 'undefined': false, + 'value': null + }; + } + + /** + * Releases the given array back to the array pool. + * + * @private + * @param {Array} [array] The array to release. + */ + function releaseArray(array) { + array.length = 0; + if (arrayPool.length < maxPoolSize) { + arrayPool.push(array); + } + } + + /** + * Releases the given object back to the object pool. + * + * @private + * @param {Object} [object] The object to release. + */ + function releaseObject(object) { + var cache = object.cache; + if (cache) { + releaseObject(cache); + } + object.array = object.cache = object.criteria = object.object = object.number = object.string = object.value = null; + if (objectPool.length < maxPoolSize) { + objectPool.push(object); + } + } + + /** + * Slices the `collection` from the `start` index up to, but not including, + * the `end` index. + * + * Note: This function is used instead of `Array#slice` to support node lists + * in IE < 9 and to ensure dense arrays are returned. + * + * @private + * @param {Array|Object|string} collection The collection to slice. + * @param {number} start The start index. + * @param {number} end The end index. + * @returns {Array} Returns the new array. + */ + function slice(array, start, end) { + start || (start = 0); + if (typeof end == 'undefined') { + end = array ? array.length : 0; + } + var index = -1, + length = end - start || 0, + result = Array(length < 0 ? 0 : length); + + while (++index < length) { + result[index] = array[start + index]; + } + return result; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Create a new `lodash` function using the given context object. + * + * @static + * @memberOf _ + * @category Utilities + * @param {Object} [context=root] The context object. + * @returns {Function} Returns the `lodash` function. + */ + function runInContext(context) { + // Avoid issues with some ES3 environments that attempt to use values, named + // after built-in constructors like `Object`, for the creation of literals. + // ES5 clears this up by stating that literals must use built-in constructors. + // See http://es5.github.io/#x11.1.5. + context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root; + + /** Native constructor references */ + var Array = context.Array, + Boolean = context.Boolean, + Date = context.Date, + Function = context.Function, + Math = context.Math, + Number = context.Number, + Object = context.Object, + RegExp = context.RegExp, + String = context.String, + TypeError = context.TypeError; + + /** + * Used for `Array` method references. + * + * Normally `Array.prototype` would suffice, however, using an array literal + * avoids issues in Narwhal. + */ + var arrayRef = []; + + /** Used for native method references */ + var objectProto = Object.prototype; + + /** Used to restore the original `_` reference in `noConflict` */ + var oldDash = context._; + + /** Used to resolve the internal [[Class]] of values */ + var toString = objectProto.toString; + + /** Used to detect if a method is native */ + var reNative = RegExp('^' + + String(toString) + .replace(/[.*+?^${}()|[\]\\]/g, '\\$&') + .replace(/toString| for [^\]]+/g, '.*?') + '$' + ); + + /** Native method shortcuts */ + var ceil = Math.ceil, + clearTimeout = context.clearTimeout, + floor = Math.floor, + fnToString = Function.prototype.toString, + getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf, + hasOwnProperty = objectProto.hasOwnProperty, + push = arrayRef.push, + setTimeout = context.setTimeout, + splice = arrayRef.splice, + unshift = arrayRef.unshift; + + /** Used to set meta data on functions */ + var defineProperty = (function() { + // IE 8 only accepts DOM elements + try { + var o = {}, + func = isNative(func = Object.defineProperty) && func, + result = func(o, o, o) && func; + } catch(e) { } + return result; + }()); + + /* Native method shortcuts for methods with the same name as other `lodash` methods */ + var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate, + nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray, + nativeIsFinite = context.isFinite, + nativeIsNaN = context.isNaN, + nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys, + nativeMax = Math.max, + nativeMin = Math.min, + nativeParseInt = context.parseInt, + nativeRandom = Math.random; + + /** Used to lookup a built-in constructor by [[Class]] */ + var ctorByClass = {}; + ctorByClass[arrayClass] = Array; + ctorByClass[boolClass] = Boolean; + ctorByClass[dateClass] = Date; + ctorByClass[funcClass] = Function; + ctorByClass[objectClass] = Object; + ctorByClass[numberClass] = Number; + ctorByClass[regexpClass] = RegExp; + ctorByClass[stringClass] = String; + + /*--------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` object which wraps the given value to enable intuitive + * method chaining. + * + * In addition to Lo-Dash methods, wrappers also have the following `Array` methods: + * `concat`, `join`, `pop`, `push`, `reverse`, `shift`, `slice`, `sort`, `splice`, + * and `unshift` + * + * Chaining is supported in custom builds as long as the `value` method is + * implicitly or explicitly included in the build. + * + * The chainable wrapper functions are: + * `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`, + * `compose`, `concat`, `countBy`, `create`, `createCallback`, `curry`, + * `debounce`, `defaults`, `defer`, `delay`, `difference`, `filter`, `flatten`, + * `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`, + * `functions`, `groupBy`, `indexBy`, `initial`, `intersection`, `invert`, + * `invoke`, `keys`, `map`, `max`, `memoize`, `merge`, `min`, `object`, `omit`, + * `once`, `pairs`, `partial`, `partialRight`, `pick`, `pluck`, `pull`, `push`, + * `range`, `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, + * `sortBy`, `splice`, `tap`, `throttle`, `times`, `toArray`, `transform`, + * `union`, `uniq`, `unshift`, `unzip`, `values`, `where`, `without`, `wrap`, + * and `zip` + * + * The non-chainable wrapper functions are: + * `clone`, `cloneDeep`, `contains`, `escape`, `every`, `find`, `findIndex`, + * `findKey`, `findLast`, `findLastIndex`, `findLastKey`, `has`, `identity`, + * `indexOf`, `isArguments`, `isArray`, `isBoolean`, `isDate`, `isElement`, + * `isEmpty`, `isEqual`, `isFinite`, `isFunction`, `isNaN`, `isNull`, `isNumber`, + * `isObject`, `isPlainObject`, `isRegExp`, `isString`, `isUndefined`, `join`, + * `lastIndexOf`, `mixin`, `noConflict`, `parseInt`, `pop`, `random`, `reduce`, + * `reduceRight`, `result`, `shift`, `size`, `some`, `sortedIndex`, `runInContext`, + * `template`, `unescape`, `uniqueId`, and `value` + * + * The wrapper functions `first` and `last` return wrapped values when `n` is + * provided, otherwise they return unwrapped values. + * + * Explicit chaining can be enabled by using the `_.chain` method. + * + * @name _ + * @constructor + * @category Chaining + * @param {*} value The value to wrap in a `lodash` instance. + * @returns {Object} Returns a `lodash` instance. + * @example + * + * var wrapped = _([1, 2, 3]); + * + * // returns an unwrapped value + * wrapped.reduce(function(sum, num) { + * return sum + num; + * }); + * // => 6 + * + * // returns a wrapped value + * var squares = wrapped.map(function(num) { + * return num * num; + * }); + * + * _.isArray(squares); + * // => false + * + * _.isArray(squares.value()); + * // => true + */ + function lodash(value) { + // don't wrap if already wrapped, even if wrapped by a different `lodash` constructor + return (value && typeof value == 'object' && !isArray(value) && hasOwnProperty.call(value, '__wrapped__')) + ? value + : new lodashWrapper(value); + } + + /** + * A fast path for creating `lodash` wrapper objects. + * + * @private + * @param {*} value The value to wrap in a `lodash` instance. + * @param {boolean} chainAll A flag to enable chaining for all methods + * @returns {Object} Returns a `lodash` instance. + */ + function lodashWrapper(value, chainAll) { + this.__chain__ = !!chainAll; + this.__wrapped__ = value; + } + // ensure `new lodashWrapper` is an instance of `lodash` + lodashWrapper.prototype = lodash.prototype; + + /** + * An object used to flag environments features. + * + * @static + * @memberOf _ + * @type Object + */ + var support = lodash.support = {}; + + /** + * Detect if functions can be decompiled by `Function#toString` + * (all but PS3 and older Opera mobile browsers & avoided in Windows 8 apps). + * + * @memberOf _.support + * @type boolean + */ + support.funcDecomp = !isNative(context.WinRTError) && reThis.test(runInContext); + + /** + * Detect if `Function#name` is supported (all but IE). + * + * @memberOf _.support + * @type boolean + */ + support.funcNames = typeof Function.name == 'string'; + + /** + * By default, the template delimiters used by Lo-Dash are similar to those in + * embedded Ruby (ERB). Change the following template settings to use alternative + * delimiters. + * + * @static + * @memberOf _ + * @type Object + */ + lodash.templateSettings = { + + /** + * Used to detect `data` property values to be HTML-escaped. + * + * @memberOf _.templateSettings + * @type RegExp + */ + 'escape': /<%-([\s\S]+?)%>/g, + + /** + * Used to detect code to be evaluated. + * + * @memberOf _.templateSettings + * @type RegExp + */ + 'evaluate': /<%([\s\S]+?)%>/g, + + /** + * Used to detect `data` property values to inject. + * + * @memberOf _.templateSettings + * @type RegExp + */ + 'interpolate': reInterpolate, + + /** + * Used to reference the data object in the template text. + * + * @memberOf _.templateSettings + * @type string + */ + 'variable': '', + + /** + * Used to import variables into the compiled template. + * + * @memberOf _.templateSettings + * @type Object + */ + 'imports': { + + /** + * A reference to the `lodash` function. + * + * @memberOf _.templateSettings.imports + * @type Function + */ + '_': lodash + } + }; + + /*--------------------------------------------------------------------------*/ + + /** + * The base implementation of `_.bind` that creates the bound function and + * sets its meta data. + * + * @private + * @param {Array} bindData The bind data array. + * @returns {Function} Returns the new bound function. + */ + function baseBind(bindData) { + var func = bindData[0], + partialArgs = bindData[2], + thisArg = bindData[4]; + + function bound() { + // `Function#bind` spec + // http://es5.github.io/#x15.3.4.5 + if (partialArgs) { + // avoid `arguments` object deoptimizations by using `slice` instead + // of `Array.prototype.slice.call` and not assigning `arguments` to a + // variable as a ternary expression + var args = slice(partialArgs); + push.apply(args, arguments); + } + // mimic the constructor's `return` behavior + // http://es5.github.io/#x13.2.2 + if (this instanceof bound) { + // ensure `new bound` is an instance of `func` + var thisBinding = baseCreate(func.prototype), + result = func.apply(thisBinding, args || arguments); + return isObject(result) ? result : thisBinding; + } + return func.apply(thisArg, args || arguments); + } + setBindData(bound, bindData); + return bound; + } + + /** + * The base implementation of `_.clone` without argument juggling or support + * for `thisArg` binding. + * + * @private + * @param {*} value The value to clone. + * @param {boolean} [isDeep=false] Specify a deep clone. + * @param {Function} [callback] The function to customize cloning values. + * @param {Array} [stackA=[]] Tracks traversed source objects. + * @param {Array} [stackB=[]] Associates clones with source counterparts. + * @returns {*} Returns the cloned value. + */ + function baseClone(value, isDeep, callback, stackA, stackB) { + if (callback) { + var result = callback(value); + if (typeof result != 'undefined') { + return result; + } + } + // inspect [[Class]] + var isObj = isObject(value); + if (isObj) { + var className = toString.call(value); + if (!cloneableClasses[className]) { + return value; + } + var ctor = ctorByClass[className]; + switch (className) { + case boolClass: + case dateClass: + return new ctor(+value); + + case numberClass: + case stringClass: + return new ctor(value); + + case regexpClass: + result = ctor(value.source, reFlags.exec(value)); + result.lastIndex = value.lastIndex; + return result; + } + } else { + return value; + } + var isArr = isArray(value); + if (isDeep) { + // check for circular references and return corresponding clone + var initedStack = !stackA; + stackA || (stackA = getArray()); + stackB || (stackB = getArray()); + + var length = stackA.length; + while (length--) { + if (stackA[length] == value) { + return stackB[length]; + } + } + result = isArr ? ctor(value.length) : {}; + } + else { + result = isArr ? slice(value) : assign({}, value); + } + // add array properties assigned by `RegExp#exec` + if (isArr) { + if (hasOwnProperty.call(value, 'index')) { + result.index = value.index; + } + if (hasOwnProperty.call(value, 'input')) { + result.input = value.input; + } + } + // exit for shallow clone + if (!isDeep) { + return result; + } + // add the source value to the stack of traversed objects + // and associate it with its clone + stackA.push(value); + stackB.push(result); + + // recursively populate clone (susceptible to call stack limits) + (isArr ? forEach : forOwn)(value, function(objValue, key) { + result[key] = baseClone(objValue, isDeep, callback, stackA, stackB); + }); + + if (initedStack) { + releaseArray(stackA); + releaseArray(stackB); + } + return result; + } + + /** + * The base implementation of `_.create` without support for assigning + * properties to the created object. + * + * @private + * @param {Object} prototype The object to inherit from. + * @returns {Object} Returns the new object. + */ + function baseCreate(prototype, properties) { + return isObject(prototype) ? nativeCreate(prototype) : {}; + } + // fallback for browsers without `Object.create` + if (!nativeCreate) { + baseCreate = (function() { + function Object() {} + return function(prototype) { + if (isObject(prototype)) { + Object.prototype = prototype; + var result = new Object; + Object.prototype = null; + } + return result || context.Object(); + }; + }()); + } + + /** + * The base implementation of `_.createCallback` without support for creating + * "_.pluck" or "_.where" style callbacks. + * + * @private + * @param {*} [func=identity] The value to convert to a callback. + * @param {*} [thisArg] The `this` binding of the created callback. + * @param {number} [argCount] The number of arguments the callback accepts. + * @returns {Function} Returns a callback function. + */ + function baseCreateCallback(func, thisArg, argCount) { + if (typeof func != 'function') { + return identity; + } + // exit early for no `thisArg` or already bound by `Function#bind` + if (typeof thisArg == 'undefined' || !('prototype' in func)) { + return func; + } + var bindData = func.__bindData__; + if (typeof bindData == 'undefined') { + if (support.funcNames) { + bindData = !func.name; + } + bindData = bindData || !support.funcDecomp; + if (!bindData) { + var source = fnToString.call(func); + if (!support.funcNames) { + bindData = !reFuncName.test(source); + } + if (!bindData) { + // checks if `func` references the `this` keyword and stores the result + bindData = reThis.test(source); + setBindData(func, bindData); + } + } + } + // exit early if there are no `this` references or `func` is bound + if (bindData === false || (bindData !== true && bindData[1] & 1)) { + return func; + } + switch (argCount) { + case 1: return function(value) { + return func.call(thisArg, value); + }; + case 2: return function(a, b) { + return func.call(thisArg, a, b); + }; + case 3: return function(value, index, collection) { + return func.call(thisArg, value, index, collection); + }; + case 4: return function(accumulator, value, index, collection) { + return func.call(thisArg, accumulator, value, index, collection); + }; + } + return bind(func, thisArg); + } + + /** + * The base implementation of `createWrapper` that creates the wrapper and + * sets its meta data. + * + * @private + * @param {Array} bindData The bind data array. + * @returns {Function} Returns the new function. + */ + function baseCreateWrapper(bindData) { + var func = bindData[0], + bitmask = bindData[1], + partialArgs = bindData[2], + partialRightArgs = bindData[3], + thisArg = bindData[4], + arity = bindData[5]; + + var isBind = bitmask & 1, + isBindKey = bitmask & 2, + isCurry = bitmask & 4, + isCurryBound = bitmask & 8, + key = func; + + function bound() { + var thisBinding = isBind ? thisArg : this; + if (partialArgs) { + var args = slice(partialArgs); + push.apply(args, arguments); + } + if (partialRightArgs || isCurry) { + args || (args = slice(arguments)); + if (partialRightArgs) { + push.apply(args, partialRightArgs); + } + if (isCurry && args.length < arity) { + bitmask |= 16 & ~32; + return baseCreateWrapper([func, (isCurryBound ? bitmask : bitmask & ~3), args, null, thisArg, arity]); + } + } + args || (args = arguments); + if (isBindKey) { + func = thisBinding[key]; + } + if (this instanceof bound) { + thisBinding = baseCreate(func.prototype); + var result = func.apply(thisBinding, args); + return isObject(result) ? result : thisBinding; + } + return func.apply(thisBinding, args); + } + setBindData(bound, bindData); + return bound; + } + + /** + * The base implementation of `_.difference` that accepts a single array + * of values to exclude. + * + * @private + * @param {Array} array The array to process. + * @param {Array} [values] The array of values to exclude. + * @returns {Array} Returns a new array of filtered values. + */ + function baseDifference(array, values) { + var index = -1, + indexOf = getIndexOf(), + length = array ? array.length : 0, + isLarge = length >= largeArraySize && indexOf === baseIndexOf, + result = []; + + if (isLarge) { + var cache = createCache(values); + if (cache) { + indexOf = cacheIndexOf; + values = cache; + } else { + isLarge = false; + } + } + while (++index < length) { + var value = array[index]; + if (indexOf(values, value) < 0) { + result.push(value); + } + } + if (isLarge) { + releaseObject(values); + } + return result; + } + + /** + * The base implementation of `_.flatten` without support for callback + * shorthands or `thisArg` binding. + * + * @private + * @param {Array} array The array to flatten. + * @param {boolean} [isShallow=false] A flag to restrict flattening to a single level. + * @param {boolean} [isStrict=false] A flag to restrict flattening to arrays and `arguments` objects. + * @param {number} [fromIndex=0] The index to start from. + * @returns {Array} Returns a new flattened array. + */ + function baseFlatten(array, isShallow, isStrict, fromIndex) { + var index = (fromIndex || 0) - 1, + length = array ? array.length : 0, + result = []; + + while (++index < length) { + var value = array[index]; + + if (value && typeof value == 'object' && typeof value.length == 'number' + && (isArray(value) || isArguments(value))) { + // recursively flatten arrays (susceptible to call stack limits) + if (!isShallow) { + value = baseFlatten(value, isShallow, isStrict); + } + var valIndex = -1, + valLength = value.length, + resIndex = result.length; + + result.length += valLength; + while (++valIndex < valLength) { + result[resIndex++] = value[valIndex]; + } + } else if (!isStrict) { + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.isEqual`, without support for `thisArg` binding, + * that allows partial "_.where" style comparisons. + * + * @private + * @param {*} a The value to compare. + * @param {*} b The other value to compare. + * @param {Function} [callback] The function to customize comparing values. + * @param {Function} [isWhere=false] A flag to indicate performing partial comparisons. + * @param {Array} [stackA=[]] Tracks traversed `a` objects. + * @param {Array} [stackB=[]] Tracks traversed `b` objects. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + */ + function baseIsEqual(a, b, callback, isWhere, stackA, stackB) { + // used to indicate that when comparing objects, `a` has at least the properties of `b` + if (callback) { + var result = callback(a, b); + if (typeof result != 'undefined') { + return !!result; + } + } + // exit early for identical values + if (a === b) { + // treat `+0` vs. `-0` as not equal + return a !== 0 || (1 / a == 1 / b); + } + var type = typeof a, + otherType = typeof b; + + // exit early for unlike primitive values + if (a === a && + !(a && objectTypes[type]) && + !(b && objectTypes[otherType])) { + return false; + } + // exit early for `null` and `undefined` avoiding ES3's Function#call behavior + // http://es5.github.io/#x15.3.4.4 + if (a == null || b == null) { + return a === b; + } + // compare [[Class]] names + var className = toString.call(a), + otherClass = toString.call(b); + + if (className == argsClass) { + className = objectClass; + } + if (otherClass == argsClass) { + otherClass = objectClass; + } + if (className != otherClass) { + return false; + } + switch (className) { + case boolClass: + case dateClass: + // coerce dates and booleans to numbers, dates to milliseconds and booleans + // to `1` or `0` treating invalid dates coerced to `NaN` as not equal + return +a == +b; + + case numberClass: + // treat `NaN` vs. `NaN` as equal + return (a != +a) + ? b != +b + // but treat `+0` vs. `-0` as not equal + : (a == 0 ? (1 / a == 1 / b) : a == +b); + + case regexpClass: + case stringClass: + // coerce regexes to strings (http://es5.github.io/#x15.10.6.4) + // treat string primitives and their corresponding object instances as equal + return a == String(b); + } + var isArr = className == arrayClass; + if (!isArr) { + // unwrap any `lodash` wrapped values + var aWrapped = hasOwnProperty.call(a, '__wrapped__'), + bWrapped = hasOwnProperty.call(b, '__wrapped__'); + + if (aWrapped || bWrapped) { + return baseIsEqual(aWrapped ? a.__wrapped__ : a, bWrapped ? b.__wrapped__ : b, callback, isWhere, stackA, stackB); + } + // exit for functions and DOM nodes + if (className != objectClass) { + return false; + } + // in older versions of Opera, `arguments` objects have `Array` constructors + var ctorA = a.constructor, + ctorB = b.constructor; + + // non `Object` object instances with different constructors are not equal + if (ctorA != ctorB && + !(isFunction(ctorA) && ctorA instanceof ctorA && isFunction(ctorB) && ctorB instanceof ctorB) && + ('constructor' in a && 'constructor' in b) + ) { + return false; + } + } + // assume cyclic structures are equal + // the algorithm for detecting cyclic structures is adapted from ES 5.1 + // section 15.12.3, abstract operation `JO` (http://es5.github.io/#x15.12.3) + var initedStack = !stackA; + stackA || (stackA = getArray()); + stackB || (stackB = getArray()); + + var length = stackA.length; + while (length--) { + if (stackA[length] == a) { + return stackB[length] == b; + } + } + var size = 0; + result = true; + + // add `a` and `b` to the stack of traversed objects + stackA.push(a); + stackB.push(b); + + // recursively compare objects and arrays (susceptible to call stack limits) + if (isArr) { + // compare lengths to determine if a deep comparison is necessary + length = a.length; + size = b.length; + result = size == length; + + if (result || isWhere) { + // deep compare the contents, ignoring non-numeric properties + while (size--) { + var index = length, + value = b[size]; + + if (isWhere) { + while (index--) { + if ((result = baseIsEqual(a[index], value, callback, isWhere, stackA, stackB))) { + break; + } + } + } else if (!(result = baseIsEqual(a[size], value, callback, isWhere, stackA, stackB))) { + break; + } + } + } + } + else { + // deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys` + // which, in this case, is more costly + forIn(b, function(value, key, b) { + if (hasOwnProperty.call(b, key)) { + // count the number of properties. + size++; + // deep compare each property value. + return (result = hasOwnProperty.call(a, key) && baseIsEqual(a[key], value, callback, isWhere, stackA, stackB)); + } + }); + + if (result && !isWhere) { + // ensure both objects have the same number of properties + forIn(a, function(value, key, a) { + if (hasOwnProperty.call(a, key)) { + // `size` will be `-1` if `a` has more properties than `b` + return (result = --size > -1); + } + }); + } + } + stackA.pop(); + stackB.pop(); + + if (initedStack) { + releaseArray(stackA); + releaseArray(stackB); + } + return result; + } + + /** + * The base implementation of `_.merge` without argument juggling or support + * for `thisArg` binding. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {Function} [callback] The function to customize merging properties. + * @param {Array} [stackA=[]] Tracks traversed source objects. + * @param {Array} [stackB=[]] Associates values with source counterparts. + */ + function baseMerge(object, source, callback, stackA, stackB) { + (isArray(source) ? forEach : forOwn)(source, function(source, key) { + var found, + isArr, + result = source, + value = object[key]; + + if (source && ((isArr = isArray(source)) || isPlainObject(source))) { + // avoid merging previously merged cyclic sources + var stackLength = stackA.length; + while (stackLength--) { + if ((found = stackA[stackLength] == source)) { + value = stackB[stackLength]; + break; + } + } + if (!found) { + var isShallow; + if (callback) { + result = callback(value, source); + if ((isShallow = typeof result != 'undefined')) { + value = result; + } + } + if (!isShallow) { + value = isArr + ? (isArray(value) ? value : []) + : (isPlainObject(value) ? value : {}); + } + // add `source` and associated `value` to the stack of traversed objects + stackA.push(source); + stackB.push(value); + + // recursively merge objects and arrays (susceptible to call stack limits) + if (!isShallow) { + baseMerge(value, source, callback, stackA, stackB); + } + } + } + else { + if (callback) { + result = callback(value, source); + if (typeof result == 'undefined') { + result = source; + } + } + if (typeof result != 'undefined') { + value = result; + } + } + object[key] = value; + }); + } + + /** + * The base implementation of `_.random` without argument juggling or support + * for returning floating-point numbers. + * + * @private + * @param {number} min The minimum possible value. + * @param {number} max The maximum possible value. + * @returns {number} Returns a random number. + */ + function baseRandom(min, max) { + return min + floor(nativeRandom() * (max - min + 1)); + } + + /** + * The base implementation of `_.uniq` without support for callback shorthands + * or `thisArg` binding. + * + * @private + * @param {Array} array The array to process. + * @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted. + * @param {Function} [callback] The function called per iteration. + * @returns {Array} Returns a duplicate-value-free array. + */ + function baseUniq(array, isSorted, callback) { + var index = -1, + indexOf = getIndexOf(), + length = array ? array.length : 0, + result = []; + + var isLarge = !isSorted && length >= largeArraySize && indexOf === baseIndexOf, + seen = (callback || isLarge) ? getArray() : result; + + if (isLarge) { + var cache = createCache(seen); + indexOf = cacheIndexOf; + seen = cache; + } + while (++index < length) { + var value = array[index], + computed = callback ? callback(value, index, array) : value; + + if (isSorted + ? !index || seen[seen.length - 1] !== computed + : indexOf(seen, computed) < 0 + ) { + if (callback || isLarge) { + seen.push(computed); + } + result.push(value); + } + } + if (isLarge) { + releaseArray(seen.array); + releaseObject(seen); + } else if (callback) { + releaseArray(seen); + } + return result; + } + + /** + * Creates a function that aggregates a collection, creating an object composed + * of keys generated from the results of running each element of the collection + * through a callback. The given `setter` function sets the keys and values + * of the composed object. + * + * @private + * @param {Function} setter The setter function. + * @returns {Function} Returns the new aggregator function. + */ + function createAggregator(setter) { + return function(collection, callback, thisArg) { + var result = {}; + callback = lodash.createCallback(callback, thisArg, 3); + + var index = -1, + length = collection ? collection.length : 0; + + if (typeof length == 'number') { + while (++index < length) { + var value = collection[index]; + setter(result, value, callback(value, index, collection), collection); + } + } else { + forOwn(collection, function(value, key, collection) { + setter(result, value, callback(value, key, collection), collection); + }); + } + return result; + }; + } + + /** + * Creates a function that, when called, either curries or invokes `func` + * with an optional `this` binding and partially applied arguments. + * + * @private + * @param {Function|string} func The function or method name to reference. + * @param {number} bitmask The bitmask of method flags to compose. + * The bitmask may be composed of the following flags: + * 1 - `_.bind` + * 2 - `_.bindKey` + * 4 - `_.curry` + * 8 - `_.curry` (bound) + * 16 - `_.partial` + * 32 - `_.partialRight` + * @param {Array} [partialArgs] An array of arguments to prepend to those + * provided to the new function. + * @param {Array} [partialRightArgs] An array of arguments to append to those + * provided to the new function. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new function. + */ + function createWrapper(func, bitmask, partialArgs, partialRightArgs, thisArg, arity) { + var isBind = bitmask & 1, + isBindKey = bitmask & 2, + isCurry = bitmask & 4, + isCurryBound = bitmask & 8, + isPartial = bitmask & 16, + isPartialRight = bitmask & 32; + + if (!isBindKey && !isFunction(func)) { + throw new TypeError; + } + if (isPartial && !partialArgs.length) { + bitmask &= ~16; + isPartial = partialArgs = false; + } + if (isPartialRight && !partialRightArgs.length) { + bitmask &= ~32; + isPartialRight = partialRightArgs = false; + } + var bindData = func && func.__bindData__; + if (bindData && bindData !== true) { + // clone `bindData` + bindData = slice(bindData); + if (bindData[2]) { + bindData[2] = slice(bindData[2]); + } + if (bindData[3]) { + bindData[3] = slice(bindData[3]); + } + // set `thisBinding` is not previously bound + if (isBind && !(bindData[1] & 1)) { + bindData[4] = thisArg; + } + // set if previously bound but not currently (subsequent curried functions) + if (!isBind && bindData[1] & 1) { + bitmask |= 8; + } + // set curried arity if not yet set + if (isCurry && !(bindData[1] & 4)) { + bindData[5] = arity; + } + // append partial left arguments + if (isPartial) { + push.apply(bindData[2] || (bindData[2] = []), partialArgs); + } + // append partial right arguments + if (isPartialRight) { + unshift.apply(bindData[3] || (bindData[3] = []), partialRightArgs); + } + // merge flags + bindData[1] |= bitmask; + return createWrapper.apply(null, bindData); + } + // fast path for `_.bind` + var creater = (bitmask == 1 || bitmask === 17) ? baseBind : baseCreateWrapper; + return creater([func, bitmask, partialArgs, partialRightArgs, thisArg, arity]); + } + + /** + * Used by `escape` to convert characters to HTML entities. + * + * @private + * @param {string} match The matched character to escape. + * @returns {string} Returns the escaped character. + */ + function escapeHtmlChar(match) { + return htmlEscapes[match]; + } + + /** + * Gets the appropriate "indexOf" function. If the `_.indexOf` method is + * customized, this method returns the custom method, otherwise it returns + * the `baseIndexOf` function. + * + * @private + * @returns {Function} Returns the "indexOf" function. + */ + function getIndexOf() { + var result = (result = lodash.indexOf) === indexOf ? baseIndexOf : result; + return result; + } + + /** + * Checks if `value` is a native function. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a native function, else `false`. + */ + function isNative(value) { + return typeof value == 'function' && reNative.test(value); + } + + /** + * Sets `this` binding data on a given function. + * + * @private + * @param {Function} func The function to set data on. + * @param {Array} value The data array to set. + */ + var setBindData = !defineProperty ? noop : function(func, value) { + descriptor.value = value; + defineProperty(func, '__bindData__', descriptor); + }; + + /** + * A fallback implementation of `isPlainObject` which checks if a given value + * is an object created by the `Object` constructor, assuming objects created + * by the `Object` constructor have no inherited enumerable properties and that + * there are no `Object.prototype` extensions. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. + */ + function shimIsPlainObject(value) { + var ctor, + result; + + // avoid non Object objects, `arguments` objects, and DOM elements + if (!(value && toString.call(value) == objectClass) || + (ctor = value.constructor, isFunction(ctor) && !(ctor instanceof ctor))) { + return false; + } + // In most environments an object's own properties are iterated before + // its inherited properties. If the last iterated property is an object's + // own property then there are no inherited enumerable properties. + forIn(value, function(value, key) { + result = key; + }); + return typeof result == 'undefined' || hasOwnProperty.call(value, result); + } + + /** + * Used by `unescape` to convert HTML entities to characters. + * + * @private + * @param {string} match The matched character to unescape. + * @returns {string} Returns the unescaped character. + */ + function unescapeHtmlChar(match) { + return htmlUnescapes[match]; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Checks if `value` is an `arguments` object. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is an `arguments` object, else `false`. + * @example + * + * (function() { return _.isArguments(arguments); })(1, 2, 3); + * // => true + * + * _.isArguments([1, 2, 3]); + * // => false + */ + function isArguments(value) { + return value && typeof value == 'object' && typeof value.length == 'number' && + toString.call(value) == argsClass || false; + } + + /** + * Checks if `value` is an array. + * + * @static + * @memberOf _ + * @type Function + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is an array, else `false`. + * @example + * + * (function() { return _.isArray(arguments); })(); + * // => false + * + * _.isArray([1, 2, 3]); + * // => true + */ + var isArray = nativeIsArray || function(value) { + return value && typeof value == 'object' && typeof value.length == 'number' && + toString.call(value) == arrayClass || false; + }; + + /** + * A fallback implementation of `Object.keys` which produces an array of the + * given object's own enumerable property names. + * + * @private + * @type Function + * @param {Object} object The object to inspect. + * @returns {Array} Returns an array of property names. + */ + var shimKeys = function(object) { + var index, iterable = object, result = []; + if (!iterable) return result; + if (!(objectTypes[typeof object])) return result; + for (index in iterable) { + if (hasOwnProperty.call(iterable, index)) { + result.push(index); + } + } + return result + }; + + /** + * Creates an array composed of the own enumerable property names of an object. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to inspect. + * @returns {Array} Returns an array of property names. + * @example + * + * _.keys({ 'one': 1, 'two': 2, 'three': 3 }); + * // => ['one', 'two', 'three'] (property order is not guaranteed across environments) + */ + var keys = !nativeKeys ? shimKeys : function(object) { + if (!isObject(object)) { + return []; + } + return nativeKeys(object); + }; + + /** + * Used to convert characters to HTML entities: + * + * Though the `>` character is escaped for symmetry, characters like `>` and `/` + * don't require escaping in HTML and have no special meaning unless they're part + * of a tag or an unquoted attribute value. + * http://mathiasbynens.be/notes/ambiguous-ampersands (under "semi-related fun fact") + */ + var htmlEscapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''' + }; + + /** Used to convert HTML entities to characters */ + var htmlUnescapes = invert(htmlEscapes); + + /** Used to match HTML entities and HTML characters */ + var reEscapedHtml = RegExp('(' + keys(htmlUnescapes).join('|') + ')', 'g'), + reUnescapedHtml = RegExp('[' + keys(htmlEscapes).join('') + ']', 'g'); + + /*--------------------------------------------------------------------------*/ + + /** + * Assigns own enumerable properties of source object(s) to the destination + * object. Subsequent sources will overwrite property assignments of previous + * sources. If a callback is provided it will be executed to produce the + * assigned values. The callback is bound to `thisArg` and invoked with two + * arguments; (objectValue, sourceValue). + * + * @static + * @memberOf _ + * @type Function + * @alias extend + * @category Objects + * @param {Object} object The destination object. + * @param {...Object} [source] The source objects. + * @param {Function} [callback] The function to customize assigning values. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns the destination object. + * @example + * + * _.assign({ 'name': 'fred' }, { 'employer': 'slate' }); + * // => { 'name': 'fred', 'employer': 'slate' } + * + * var defaults = _.partialRight(_.assign, function(a, b) { + * return typeof a == 'undefined' ? b : a; + * }); + * + * var object = { 'name': 'barney' }; + * defaults(object, { 'name': 'fred', 'employer': 'slate' }); + * // => { 'name': 'barney', 'employer': 'slate' } + */ + var assign = function(object, source, guard) { + var index, iterable = object, result = iterable; + if (!iterable) return result; + var args = arguments, + argsIndex = 0, + argsLength = typeof guard == 'number' ? 2 : args.length; + if (argsLength > 3 && typeof args[argsLength - 2] == 'function') { + var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2); + } else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') { + callback = args[--argsLength]; + } + while (++argsIndex < argsLength) { + iterable = args[argsIndex]; + if (iterable && objectTypes[typeof iterable]) { + var ownIndex = -1, + ownProps = objectTypes[typeof iterable] && keys(iterable), + length = ownProps ? ownProps.length : 0; + + while (++ownIndex < length) { + index = ownProps[ownIndex]; + result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]; + } + } + } + return result + }; + + /** + * Creates a clone of `value`. If `isDeep` is `true` nested objects will also + * be cloned, otherwise they will be assigned by reference. If a callback + * is provided it will be executed to produce the cloned values. If the + * callback returns `undefined` cloning will be handled by the method instead. + * The callback is bound to `thisArg` and invoked with one argument; (value). + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to clone. + * @param {boolean} [isDeep=false] Specify a deep clone. + * @param {Function} [callback] The function to customize cloning values. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the cloned value. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * var shallow = _.clone(characters); + * shallow[0] === characters[0]; + * // => true + * + * var deep = _.clone(characters, true); + * deep[0] === characters[0]; + * // => false + * + * _.mixin({ + * 'clone': _.partialRight(_.clone, function(value) { + * return _.isElement(value) ? value.cloneNode(false) : undefined; + * }) + * }); + * + * var clone = _.clone(document.body); + * clone.childNodes.length; + * // => 0 + */ + function clone(value, isDeep, callback, thisArg) { + // allows working with "Collections" methods without using their `index` + // and `collection` arguments for `isDeep` and `callback` + if (typeof isDeep != 'boolean' && isDeep != null) { + thisArg = callback; + callback = isDeep; + isDeep = false; + } + return baseClone(value, isDeep, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1)); + } + + /** + * Creates a deep clone of `value`. If a callback is provided it will be + * executed to produce the cloned values. If the callback returns `undefined` + * cloning will be handled by the method instead. The callback is bound to + * `thisArg` and invoked with one argument; (value). + * + * Note: This method is loosely based on the structured clone algorithm. Functions + * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and + * objects created by constructors other than `Object` are cloned to plain `Object` objects. + * See http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to deep clone. + * @param {Function} [callback] The function to customize cloning values. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the deep cloned value. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * var deep = _.cloneDeep(characters); + * deep[0] === characters[0]; + * // => false + * + * var view = { + * 'label': 'docs', + * 'node': element + * }; + * + * var clone = _.cloneDeep(view, function(value) { + * return _.isElement(value) ? value.cloneNode(true) : undefined; + * }); + * + * clone.node == view.node; + * // => false + */ + function cloneDeep(value, callback, thisArg) { + return baseClone(value, true, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1)); + } + + /** + * Creates an object that inherits from the given `prototype` object. If a + * `properties` object is provided its own enumerable properties are assigned + * to the created object. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} prototype The object to inherit from. + * @param {Object} [properties] The properties to assign to the object. + * @returns {Object} Returns the new object. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * function Circle() { + * Shape.call(this); + * } + * + * Circle.prototype = _.create(Shape.prototype, { 'constructor': Circle }); + * + * var circle = new Circle; + * circle instanceof Circle; + * // => true + * + * circle instanceof Shape; + * // => true + */ + function create(prototype, properties) { + var result = baseCreate(prototype); + return properties ? assign(result, properties) : result; + } + + /** + * Assigns own enumerable properties of source object(s) to the destination + * object for all destination properties that resolve to `undefined`. Once a + * property is set, additional defaults of the same property will be ignored. + * + * @static + * @memberOf _ + * @type Function + * @category Objects + * @param {Object} object The destination object. + * @param {...Object} [source] The source objects. + * @param- {Object} [guard] Allows working with `_.reduce` without using its + * `key` and `object` arguments as sources. + * @returns {Object} Returns the destination object. + * @example + * + * var object = { 'name': 'barney' }; + * _.defaults(object, { 'name': 'fred', 'employer': 'slate' }); + * // => { 'name': 'barney', 'employer': 'slate' } + */ + var defaults = function(object, source, guard) { + var index, iterable = object, result = iterable; + if (!iterable) return result; + var args = arguments, + argsIndex = 0, + argsLength = typeof guard == 'number' ? 2 : args.length; + while (++argsIndex < argsLength) { + iterable = args[argsIndex]; + if (iterable && objectTypes[typeof iterable]) { + var ownIndex = -1, + ownProps = objectTypes[typeof iterable] && keys(iterable), + length = ownProps ? ownProps.length : 0; + + while (++ownIndex < length) { + index = ownProps[ownIndex]; + if (typeof result[index] == 'undefined') result[index] = iterable[index]; + } + } + } + return result + }; + + /** + * This method is like `_.findIndex` except that it returns the key of the + * first element that passes the callback check, instead of the element itself. + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to search. + * @param {Function|Object|string} [callback=identity] The function called per + * iteration. If a property name or object is provided it will be used to + * create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {string|undefined} Returns the key of the found element, else `undefined`. + * @example + * + * var characters = { + * 'barney': { 'age': 36, 'blocked': false }, + * 'fred': { 'age': 40, 'blocked': true }, + * 'pebbles': { 'age': 1, 'blocked': false } + * }; + * + * _.findKey(characters, function(chr) { + * return chr.age < 40; + * }); + * // => 'barney' (property order is not guaranteed across environments) + * + * // using "_.where" callback shorthand + * _.findKey(characters, { 'age': 1 }); + * // => 'pebbles' + * + * // using "_.pluck" callback shorthand + * _.findKey(characters, 'blocked'); + * // => 'fred' + */ + function findKey(object, callback, thisArg) { + var result; + callback = lodash.createCallback(callback, thisArg, 3); + forOwn(object, function(value, key, object) { + if (callback(value, key, object)) { + result = key; + return false; + } + }); + return result; + } + + /** + * This method is like `_.findKey` except that it iterates over elements + * of a `collection` in the opposite order. + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to search. + * @param {Function|Object|string} [callback=identity] The function called per + * iteration. If a property name or object is provided it will be used to + * create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {string|undefined} Returns the key of the found element, else `undefined`. + * @example + * + * var characters = { + * 'barney': { 'age': 36, 'blocked': true }, + * 'fred': { 'age': 40, 'blocked': false }, + * 'pebbles': { 'age': 1, 'blocked': true } + * }; + * + * _.findLastKey(characters, function(chr) { + * return chr.age < 40; + * }); + * // => returns `pebbles`, assuming `_.findKey` returns `barney` + * + * // using "_.where" callback shorthand + * _.findLastKey(characters, { 'age': 40 }); + * // => 'fred' + * + * // using "_.pluck" callback shorthand + * _.findLastKey(characters, 'blocked'); + * // => 'pebbles' + */ + function findLastKey(object, callback, thisArg) { + var result; + callback = lodash.createCallback(callback, thisArg, 3); + forOwnRight(object, function(value, key, object) { + if (callback(value, key, object)) { + result = key; + return false; + } + }); + return result; + } + + /** + * Iterates over own and inherited enumerable properties of an object, + * executing the callback for each property. The callback is bound to `thisArg` + * and invoked with three arguments; (value, key, object). Callbacks may exit + * iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @type Function + * @category Objects + * @param {Object} object The object to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns `object`. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * Shape.prototype.move = function(x, y) { + * this.x += x; + * this.y += y; + * }; + * + * _.forIn(new Shape, function(value, key) { + * console.log(key); + * }); + * // => logs 'x', 'y', and 'move' (property order is not guaranteed across environments) + */ + var forIn = function(collection, callback, thisArg) { + var index, iterable = collection, result = iterable; + if (!iterable) return result; + if (!objectTypes[typeof iterable]) return result; + callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); + for (index in iterable) { + if (callback(iterable[index], index, collection) === false) return result; + } + return result + }; + + /** + * This method is like `_.forIn` except that it iterates over elements + * of a `collection` in the opposite order. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns `object`. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * Shape.prototype.move = function(x, y) { + * this.x += x; + * this.y += y; + * }; + * + * _.forInRight(new Shape, function(value, key) { + * console.log(key); + * }); + * // => logs 'move', 'y', and 'x' assuming `_.forIn ` logs 'x', 'y', and 'move' + */ + function forInRight(object, callback, thisArg) { + var pairs = []; + + forIn(object, function(value, key) { + pairs.push(key, value); + }); + + var length = pairs.length; + callback = baseCreateCallback(callback, thisArg, 3); + while (length--) { + if (callback(pairs[length--], pairs[length], object) === false) { + break; + } + } + return object; + } + + /** + * Iterates over own enumerable properties of an object, executing the callback + * for each property. The callback is bound to `thisArg` and invoked with three + * arguments; (value, key, object). Callbacks may exit iteration early by + * explicitly returning `false`. + * + * @static + * @memberOf _ + * @type Function + * @category Objects + * @param {Object} object The object to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns `object`. + * @example + * + * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) { + * console.log(key); + * }); + * // => logs '0', '1', and 'length' (property order is not guaranteed across environments) + */ + var forOwn = function(collection, callback, thisArg) { + var index, iterable = collection, result = iterable; + if (!iterable) return result; + if (!objectTypes[typeof iterable]) return result; + callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); + var ownIndex = -1, + ownProps = objectTypes[typeof iterable] && keys(iterable), + length = ownProps ? ownProps.length : 0; + + while (++ownIndex < length) { + index = ownProps[ownIndex]; + if (callback(iterable[index], index, collection) === false) return result; + } + return result + }; + + /** + * This method is like `_.forOwn` except that it iterates over elements + * of a `collection` in the opposite order. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns `object`. + * @example + * + * _.forOwnRight({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) { + * console.log(key); + * }); + * // => logs 'length', '1', and '0' assuming `_.forOwn` logs '0', '1', and 'length' + */ + function forOwnRight(object, callback, thisArg) { + var props = keys(object), + length = props.length; + + callback = baseCreateCallback(callback, thisArg, 3); + while (length--) { + var key = props[length]; + if (callback(object[key], key, object) === false) { + break; + } + } + return object; + } + + /** + * Creates a sorted array of property names of all enumerable properties, + * own and inherited, of `object` that have function values. + * + * @static + * @memberOf _ + * @alias methods + * @category Objects + * @param {Object} object The object to inspect. + * @returns {Array} Returns an array of property names that have function values. + * @example + * + * _.functions(_); + * // => ['all', 'any', 'bind', 'bindAll', 'clone', 'compact', 'compose', ...] + */ + function functions(object) { + var result = []; + forIn(object, function(value, key) { + if (isFunction(value)) { + result.push(key); + } + }); + return result.sort(); + } + + /** + * Checks if the specified property name exists as a direct property of `object`, + * instead of an inherited property. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to inspect. + * @param {string} key The name of the property to check. + * @returns {boolean} Returns `true` if key is a direct property, else `false`. + * @example + * + * _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b'); + * // => true + */ + function has(object, key) { + return object ? hasOwnProperty.call(object, key) : false; + } + + /** + * Creates an object composed of the inverted keys and values of the given object. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to invert. + * @returns {Object} Returns the created inverted object. + * @example + * + * _.invert({ 'first': 'fred', 'second': 'barney' }); + * // => { 'fred': 'first', 'barney': 'second' } + */ + function invert(object) { + var index = -1, + props = keys(object), + length = props.length, + result = {}; + + while (++index < length) { + var key = props[index]; + result[object[key]] = key; + } + return result; + } + + /** + * Checks if `value` is a boolean value. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a boolean value, else `false`. + * @example + * + * _.isBoolean(null); + * // => false + */ + function isBoolean(value) { + return value === true || value === false || + value && typeof value == 'object' && toString.call(value) == boolClass || false; + } + + /** + * Checks if `value` is a date. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a date, else `false`. + * @example + * + * _.isDate(new Date); + * // => true + */ + function isDate(value) { + return value && typeof value == 'object' && toString.call(value) == dateClass || false; + } + + /** + * Checks if `value` is a DOM element. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a DOM element, else `false`. + * @example + * + * _.isElement(document.body); + * // => true + */ + function isElement(value) { + return value && value.nodeType === 1 || false; + } + + /** + * Checks if `value` is empty. Arrays, strings, or `arguments` objects with a + * length of `0` and objects with no own enumerable properties are considered + * "empty". + * + * @static + * @memberOf _ + * @category Objects + * @param {Array|Object|string} value The value to inspect. + * @returns {boolean} Returns `true` if the `value` is empty, else `false`. + * @example + * + * _.isEmpty([1, 2, 3]); + * // => false + * + * _.isEmpty({}); + * // => true + * + * _.isEmpty(''); + * // => true + */ + function isEmpty(value) { + var result = true; + if (!value) { + return result; + } + var className = toString.call(value), + length = value.length; + + if ((className == arrayClass || className == stringClass || className == argsClass ) || + (className == objectClass && typeof length == 'number' && isFunction(value.splice))) { + return !length; + } + forOwn(value, function() { + return (result = false); + }); + return result; + } + + /** + * Performs a deep comparison between two values to determine if they are + * equivalent to each other. If a callback is provided it will be executed + * to compare values. If the callback returns `undefined` comparisons will + * be handled by the method instead. The callback is bound to `thisArg` and + * invoked with two arguments; (a, b). + * + * @static + * @memberOf _ + * @category Objects + * @param {*} a The value to compare. + * @param {*} b The other value to compare. + * @param {Function} [callback] The function to customize comparing values. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'name': 'fred' }; + * var copy = { 'name': 'fred' }; + * + * object == copy; + * // => false + * + * _.isEqual(object, copy); + * // => true + * + * var words = ['hello', 'goodbye']; + * var otherWords = ['hi', 'goodbye']; + * + * _.isEqual(words, otherWords, function(a, b) { + * var reGreet = /^(?:hello|hi)$/i, + * aGreet = _.isString(a) && reGreet.test(a), + * bGreet = _.isString(b) && reGreet.test(b); + * + * return (aGreet || bGreet) ? (aGreet == bGreet) : undefined; + * }); + * // => true + */ + function isEqual(a, b, callback, thisArg) { + return baseIsEqual(a, b, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 2)); + } + + /** + * Checks if `value` is, or can be coerced to, a finite number. + * + * Note: This is not the same as native `isFinite` which will return true for + * booleans and empty strings. See http://es5.github.io/#x15.1.2.5. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is finite, else `false`. + * @example + * + * _.isFinite(-101); + * // => true + * + * _.isFinite('10'); + * // => true + * + * _.isFinite(true); + * // => false + * + * _.isFinite(''); + * // => false + * + * _.isFinite(Infinity); + * // => false + */ + function isFinite(value) { + return nativeIsFinite(value) && !nativeIsNaN(parseFloat(value)); + } + + /** + * Checks if `value` is a function. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a function, else `false`. + * @example + * + * _.isFunction(_); + * // => true + */ + function isFunction(value) { + return typeof value == 'function'; + } + + /** + * Checks if `value` is the language type of Object. + * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is an object, else `false`. + * @example + * + * _.isObject({}); + * // => true + * + * _.isObject([1, 2, 3]); + * // => true + * + * _.isObject(1); + * // => false + */ + function isObject(value) { + // check if the value is the ECMAScript language type of Object + // http://es5.github.io/#x8 + // and avoid a V8 bug + // http://code.google.com/p/v8/issues/detail?id=2291 + return !!(value && objectTypes[typeof value]); + } + + /** + * Checks if `value` is `NaN`. + * + * Note: This is not the same as native `isNaN` which will return `true` for + * `undefined` and other non-numeric values. See http://es5.github.io/#x15.1.2.4. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is `NaN`, else `false`. + * @example + * + * _.isNaN(NaN); + * // => true + * + * _.isNaN(new Number(NaN)); + * // => true + * + * isNaN(undefined); + * // => true + * + * _.isNaN(undefined); + * // => false + */ + function isNaN(value) { + // `NaN` as a primitive is the only value that is not equal to itself + // (perform the [[Class]] check first to avoid errors with some host objects in IE) + return isNumber(value) && value != +value; + } + + /** + * Checks if `value` is `null`. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is `null`, else `false`. + * @example + * + * _.isNull(null); + * // => true + * + * _.isNull(undefined); + * // => false + */ + function isNull(value) { + return value === null; + } + + /** + * Checks if `value` is a number. + * + * Note: `NaN` is considered a number. See http://es5.github.io/#x8.5. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a number, else `false`. + * @example + * + * _.isNumber(8.4 * 5); + * // => true + */ + function isNumber(value) { + return typeof value == 'number' || + value && typeof value == 'object' && toString.call(value) == numberClass || false; + } + + /** + * Checks if `value` is an object created by the `Object` constructor. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * _.isPlainObject(new Shape); + * // => false + * + * _.isPlainObject([1, 2, 3]); + * // => false + * + * _.isPlainObject({ 'x': 0, 'y': 0 }); + * // => true + */ + var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) { + if (!(value && toString.call(value) == objectClass)) { + return false; + } + var valueOf = value.valueOf, + objProto = isNative(valueOf) && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto); + + return objProto + ? (value == objProto || getPrototypeOf(value) == objProto) + : shimIsPlainObject(value); + }; + + /** + * Checks if `value` is a regular expression. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a regular expression, else `false`. + * @example + * + * _.isRegExp(/fred/); + * // => true + */ + function isRegExp(value) { + return value && typeof value == 'object' && toString.call(value) == regexpClass || false; + } + + /** + * Checks if `value` is a string. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is a string, else `false`. + * @example + * + * _.isString('fred'); + * // => true + */ + function isString(value) { + return typeof value == 'string' || + value && typeof value == 'object' && toString.call(value) == stringClass || false; + } + + /** + * Checks if `value` is `undefined`. + * + * @static + * @memberOf _ + * @category Objects + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if the `value` is `undefined`, else `false`. + * @example + * + * _.isUndefined(void 0); + * // => true + */ + function isUndefined(value) { + return typeof value == 'undefined'; + } + + /** + * Creates an object with the same keys as `object` and values generated by + * running each own enumerable property of `object` through the callback. + * The callback is bound to `thisArg` and invoked with three arguments; + * (value, key, object). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a new object with values of the results of each `callback` execution. + * @example + * + * _.mapValues({ 'a': 1, 'b': 2, 'c': 3} , function(num) { return num * 3; }); + * // => { 'a': 3, 'b': 6, 'c': 9 } + * + * var characters = { + * 'fred': { 'name': 'fred', 'age': 40 }, + * 'pebbles': { 'name': 'pebbles', 'age': 1 } + * }; + * + * // using "_.pluck" callback shorthand + * _.mapValues(characters, 'age'); + * // => { 'fred': 40, 'pebbles': 1 } + */ + function mapValues(object, callback, thisArg) { + var result = {}; + callback = lodash.createCallback(callback, thisArg, 3); + + forOwn(object, function(value, key, object) { + result[key] = callback(value, key, object); + }); + return result; + } + + /** + * Recursively merges own enumerable properties of the source object(s), that + * don't resolve to `undefined` into the destination object. Subsequent sources + * will overwrite property assignments of previous sources. If a callback is + * provided it will be executed to produce the merged values of the destination + * and source properties. If the callback returns `undefined` merging will + * be handled by the method instead. The callback is bound to `thisArg` and + * invoked with two arguments; (objectValue, sourceValue). + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The destination object. + * @param {...Object} [source] The source objects. + * @param {Function} [callback] The function to customize merging properties. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns the destination object. + * @example + * + * var names = { + * 'characters': [ + * { 'name': 'barney' }, + * { 'name': 'fred' } + * ] + * }; + * + * var ages = { + * 'characters': [ + * { 'age': 36 }, + * { 'age': 40 } + * ] + * }; + * + * _.merge(names, ages); + * // => { 'characters': [{ 'name': 'barney', 'age': 36 }, { 'name': 'fred', 'age': 40 }] } + * + * var food = { + * 'fruits': ['apple'], + * 'vegetables': ['beet'] + * }; + * + * var otherFood = { + * 'fruits': ['banana'], + * 'vegetables': ['carrot'] + * }; + * + * _.merge(food, otherFood, function(a, b) { + * return _.isArray(a) ? a.concat(b) : undefined; + * }); + * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot] } + */ + function merge(object) { + var args = arguments, + length = 2; + + if (!isObject(object)) { + return object; + } + // allows working with `_.reduce` and `_.reduceRight` without using + // their `index` and `collection` arguments + if (typeof args[2] != 'number') { + length = args.length; + } + if (length > 3 && typeof args[length - 2] == 'function') { + var callback = baseCreateCallback(args[--length - 1], args[length--], 2); + } else if (length > 2 && typeof args[length - 1] == 'function') { + callback = args[--length]; + } + var sources = slice(arguments, 1, length), + index = -1, + stackA = getArray(), + stackB = getArray(); + + while (++index < length) { + baseMerge(object, sources[index], callback, stackA, stackB); + } + releaseArray(stackA); + releaseArray(stackB); + return object; + } + + /** + * Creates a shallow clone of `object` excluding the specified properties. + * Property names may be specified as individual arguments or as arrays of + * property names. If a callback is provided it will be executed for each + * property of `object` omitting the properties the callback returns truey + * for. The callback is bound to `thisArg` and invoked with three arguments; + * (value, key, object). + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The source object. + * @param {Function|...string|string[]} [callback] The properties to omit or the + * function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns an object without the omitted properties. + * @example + * + * _.omit({ 'name': 'fred', 'age': 40 }, 'age'); + * // => { 'name': 'fred' } + * + * _.omit({ 'name': 'fred', 'age': 40 }, function(value) { + * return typeof value == 'number'; + * }); + * // => { 'name': 'fred' } + */ + function omit(object, callback, thisArg) { + var result = {}; + if (typeof callback != 'function') { + var props = []; + forIn(object, function(value, key) { + props.push(key); + }); + props = baseDifference(props, baseFlatten(arguments, true, false, 1)); + + var index = -1, + length = props.length; + + while (++index < length) { + var key = props[index]; + result[key] = object[key]; + } + } else { + callback = lodash.createCallback(callback, thisArg, 3); + forIn(object, function(value, key, object) { + if (!callback(value, key, object)) { + result[key] = value; + } + }); + } + return result; + } + + /** + * Creates a two dimensional array of an object's key-value pairs, + * i.e. `[[key1, value1], [key2, value2]]`. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to inspect. + * @returns {Array} Returns new array of key-value pairs. + * @example + * + * _.pairs({ 'barney': 36, 'fred': 40 }); + * // => [['barney', 36], ['fred', 40]] (property order is not guaranteed across environments) + */ + function pairs(object) { + var index = -1, + props = keys(object), + length = props.length, + result = Array(length); + + while (++index < length) { + var key = props[index]; + result[index] = [key, object[key]]; + } + return result; + } + + /** + * Creates a shallow clone of `object` composed of the specified properties. + * Property names may be specified as individual arguments or as arrays of + * property names. If a callback is provided it will be executed for each + * property of `object` picking the properties the callback returns truey + * for. The callback is bound to `thisArg` and invoked with three arguments; + * (value, key, object). + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The source object. + * @param {Function|...string|string[]} [callback] The function called per + * iteration or property names to pick, specified as individual property + * names or arrays of property names. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns an object composed of the picked properties. + * @example + * + * _.pick({ 'name': 'fred', '_userid': 'fred1' }, 'name'); + * // => { 'name': 'fred' } + * + * _.pick({ 'name': 'fred', '_userid': 'fred1' }, function(value, key) { + * return key.charAt(0) != '_'; + * }); + * // => { 'name': 'fred' } + */ + function pick(object, callback, thisArg) { + var result = {}; + if (typeof callback != 'function') { + var index = -1, + props = baseFlatten(arguments, true, false, 1), + length = isObject(object) ? props.length : 0; + + while (++index < length) { + var key = props[index]; + if (key in object) { + result[key] = object[key]; + } + } + } else { + callback = lodash.createCallback(callback, thisArg, 3); + forIn(object, function(value, key, object) { + if (callback(value, key, object)) { + result[key] = value; + } + }); + } + return result; + } + + /** + * An alternative to `_.reduce` this method transforms `object` to a new + * `accumulator` object which is the result of running each of its own + * enumerable properties through a callback, with each callback execution + * potentially mutating the `accumulator` object. The callback is bound to + * `thisArg` and invoked with four arguments; (accumulator, value, key, object). + * Callbacks may exit iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @category Objects + * @param {Array|Object} object The object to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [accumulator] The custom accumulator value. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the accumulated value. + * @example + * + * var squares = _.transform([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function(result, num) { + * num *= num; + * if (num % 2) { + * return result.push(num) < 3; + * } + * }); + * // => [1, 9, 25] + * + * var mapped = _.transform({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) { + * result[key] = num * 3; + * }); + * // => { 'a': 3, 'b': 6, 'c': 9 } + */ + function transform(object, callback, accumulator, thisArg) { + var isArr = isArray(object); + if (accumulator == null) { + if (isArr) { + accumulator = []; + } else { + var ctor = object && object.constructor, + proto = ctor && ctor.prototype; + + accumulator = baseCreate(proto); + } + } + if (callback) { + callback = lodash.createCallback(callback, thisArg, 4); + (isArr ? forEach : forOwn)(object, function(value, index, object) { + return callback(accumulator, value, index, object); + }); + } + return accumulator; + } + + /** + * Creates an array composed of the own enumerable property values of `object`. + * + * @static + * @memberOf _ + * @category Objects + * @param {Object} object The object to inspect. + * @returns {Array} Returns an array of property values. + * @example + * + * _.values({ 'one': 1, 'two': 2, 'three': 3 }); + * // => [1, 2, 3] (property order is not guaranteed across environments) + */ + function values(object) { + var index = -1, + props = keys(object), + length = props.length, + result = Array(length); + + while (++index < length) { + result[index] = object[props[index]]; + } + return result; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Creates an array of elements from the specified indexes, or keys, of the + * `collection`. Indexes may be specified as individual arguments or as arrays + * of indexes. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {...(number|number[]|string|string[])} [index] The indexes of `collection` + * to retrieve, specified as individual indexes or arrays of indexes. + * @returns {Array} Returns a new array of elements corresponding to the + * provided indexes. + * @example + * + * _.at(['a', 'b', 'c', 'd', 'e'], [0, 2, 4]); + * // => ['a', 'c', 'e'] + * + * _.at(['fred', 'barney', 'pebbles'], 0, 2); + * // => ['fred', 'pebbles'] + */ + function at(collection) { + var args = arguments, + index = -1, + props = baseFlatten(args, true, false, 1), + length = (args[2] && args[2][args[1]] === collection) ? 1 : props.length, + result = Array(length); + + while(++index < length) { + result[index] = collection[props[index]]; + } + return result; + } + + /** + * Checks if a given value is present in a collection using strict equality + * for comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the + * offset from the end of the collection. + * + * @static + * @memberOf _ + * @alias include + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {*} target The value to check for. + * @param {number} [fromIndex=0] The index to search from. + * @returns {boolean} Returns `true` if the `target` element is found, else `false`. + * @example + * + * _.contains([1, 2, 3], 1); + * // => true + * + * _.contains([1, 2, 3], 1, 2); + * // => false + * + * _.contains({ 'name': 'fred', 'age': 40 }, 'fred'); + * // => true + * + * _.contains('pebbles', 'eb'); + * // => true + */ + function contains(collection, target, fromIndex) { + var index = -1, + indexOf = getIndexOf(), + length = collection ? collection.length : 0, + result = false; + + fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex) || 0; + if (isArray(collection)) { + result = indexOf(collection, target, fromIndex) > -1; + } else if (typeof length == 'number') { + result = (isString(collection) ? collection.indexOf(target, fromIndex) : indexOf(collection, target, fromIndex)) > -1; + } else { + forOwn(collection, function(value) { + if (++index >= fromIndex) { + return !(result = value === target); + } + }); + } + return result; + } + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` through the callback. The corresponding value + * of each key is the number of times the key was returned by the callback. + * The callback is bound to `thisArg` and invoked with three arguments; + * (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.countBy([4.3, 6.1, 6.4], function(num) { return Math.floor(num); }); + * // => { '4': 1, '6': 2 } + * + * _.countBy([4.3, 6.1, 6.4], function(num) { return this.floor(num); }, Math); + * // => { '4': 1, '6': 2 } + * + * _.countBy(['one', 'two', 'three'], 'length'); + * // => { '3': 2, '5': 1 } + */ + var countBy = createAggregator(function(result, value, key) { + (hasOwnProperty.call(result, key) ? result[key]++ : result[key] = 1); + }); + + /** + * Checks if the given callback returns truey value for **all** elements of + * a collection. The callback is bound to `thisArg` and invoked with three + * arguments; (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias all + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {boolean} Returns `true` if all elements passed the callback check, + * else `false`. + * @example + * + * _.every([true, 1, null, 'yes']); + * // => false + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * // using "_.pluck" callback shorthand + * _.every(characters, 'age'); + * // => true + * + * // using "_.where" callback shorthand + * _.every(characters, { 'age': 36 }); + * // => false + */ + function every(collection, callback, thisArg) { + var result = true; + callback = lodash.createCallback(callback, thisArg, 3); + + var index = -1, + length = collection ? collection.length : 0; + + if (typeof length == 'number') { + while (++index < length) { + if (!(result = !!callback(collection[index], index, collection))) { + break; + } + } + } else { + forOwn(collection, function(value, index, collection) { + return (result = !!callback(value, index, collection)); + }); + } + return result; + } + + /** + * Iterates over elements of a collection, returning an array of all elements + * the callback returns truey for. The callback is bound to `thisArg` and + * invoked with three arguments; (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias select + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a new array of elements that passed the callback check. + * @example + * + * var evens = _.filter([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); + * // => [2, 4, 6] + * + * var characters = [ + * { 'name': 'barney', 'age': 36, 'blocked': false }, + * { 'name': 'fred', 'age': 40, 'blocked': true } + * ]; + * + * // using "_.pluck" callback shorthand + * _.filter(characters, 'blocked'); + * // => [{ 'name': 'fred', 'age': 40, 'blocked': true }] + * + * // using "_.where" callback shorthand + * _.filter(characters, { 'age': 36 }); + * // => [{ 'name': 'barney', 'age': 36, 'blocked': false }] + */ + function filter(collection, callback, thisArg) { + var result = []; + callback = lodash.createCallback(callback, thisArg, 3); + + var index = -1, + length = collection ? collection.length : 0; + + if (typeof length == 'number') { + while (++index < length) { + var value = collection[index]; + if (callback(value, index, collection)) { + result.push(value); + } + } + } else { + forOwn(collection, function(value, index, collection) { + if (callback(value, index, collection)) { + result.push(value); + } + }); + } + return result; + } + + /** + * Iterates over elements of a collection, returning the first element that + * the callback returns truey for. The callback is bound to `thisArg` and + * invoked with three arguments; (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias detect, findWhere + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the found element, else `undefined`. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36, 'blocked': false }, + * { 'name': 'fred', 'age': 40, 'blocked': true }, + * { 'name': 'pebbles', 'age': 1, 'blocked': false } + * ]; + * + * _.find(characters, function(chr) { + * return chr.age < 40; + * }); + * // => { 'name': 'barney', 'age': 36, 'blocked': false } + * + * // using "_.where" callback shorthand + * _.find(characters, { 'age': 1 }); + * // => { 'name': 'pebbles', 'age': 1, 'blocked': false } + * + * // using "_.pluck" callback shorthand + * _.find(characters, 'blocked'); + * // => { 'name': 'fred', 'age': 40, 'blocked': true } + */ + function find(collection, callback, thisArg) { + callback = lodash.createCallback(callback, thisArg, 3); + + var index = -1, + length = collection ? collection.length : 0; + + if (typeof length == 'number') { + while (++index < length) { + var value = collection[index]; + if (callback(value, index, collection)) { + return value; + } + } + } else { + var result; + forOwn(collection, function(value, index, collection) { + if (callback(value, index, collection)) { + result = value; + return false; + } + }); + return result; + } + } + + /** + * This method is like `_.find` except that it iterates over elements + * of a `collection` from right to left. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the found element, else `undefined`. + * @example + * + * _.findLast([1, 2, 3, 4], function(num) { + * return num % 2 == 1; + * }); + * // => 3 + */ + function findLast(collection, callback, thisArg) { + var result; + callback = lodash.createCallback(callback, thisArg, 3); + forEachRight(collection, function(value, index, collection) { + if (callback(value, index, collection)) { + result = value; + return false; + } + }); + return result; + } + + /** + * Iterates over elements of a collection, executing the callback for each + * element. The callback is bound to `thisArg` and invoked with three arguments; + * (value, index|key, collection). Callbacks may exit iteration early by + * explicitly returning `false`. + * + * Note: As with other "Collections" methods, objects with a `length` property + * are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn` + * may be used for object iteration. + * + * @static + * @memberOf _ + * @alias each + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array|Object|string} Returns `collection`. + * @example + * + * _([1, 2, 3]).forEach(function(num) { console.log(num); }).join(','); + * // => logs each number and returns '1,2,3' + * + * _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { console.log(num); }); + * // => logs each number and returns the object (property order is not guaranteed across environments) + */ + function forEach(collection, callback, thisArg) { + var index = -1, + length = collection ? collection.length : 0; + + callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); + if (typeof length == 'number') { + while (++index < length) { + if (callback(collection[index], index, collection) === false) { + break; + } + } + } else { + forOwn(collection, callback); + } + return collection; + } + + /** + * This method is like `_.forEach` except that it iterates over elements + * of a `collection` from right to left. + * + * @static + * @memberOf _ + * @alias eachRight + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array|Object|string} Returns `collection`. + * @example + * + * _([1, 2, 3]).forEachRight(function(num) { console.log(num); }).join(','); + * // => logs each number from right to left and returns '3,2,1' + */ + function forEachRight(collection, callback, thisArg) { + var length = collection ? collection.length : 0; + callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); + if (typeof length == 'number') { + while (length--) { + if (callback(collection[length], length, collection) === false) { + break; + } + } + } else { + var props = keys(collection); + length = props.length; + forOwn(collection, function(value, key, collection) { + key = props ? props[--length] : --length; + return callback(collection[key], key, collection); + }); + } + return collection; + } + + /** + * Creates an object composed of keys generated from the results of running + * each element of a collection through the callback. The corresponding value + * of each key is an array of the elements responsible for generating the key. + * The callback is bound to `thisArg` and invoked with three arguments; + * (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false` + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.groupBy([4.2, 6.1, 6.4], function(num) { return Math.floor(num); }); + * // => { '4': [4.2], '6': [6.1, 6.4] } + * + * _.groupBy([4.2, 6.1, 6.4], function(num) { return this.floor(num); }, Math); + * // => { '4': [4.2], '6': [6.1, 6.4] } + * + * // using "_.pluck" callback shorthand + * _.groupBy(['one', 'two', 'three'], 'length'); + * // => { '3': ['one', 'two'], '5': ['three'] } + */ + var groupBy = createAggregator(function(result, value, key) { + (hasOwnProperty.call(result, key) ? result[key] : result[key] = []).push(value); + }); + + /** + * Creates an object composed of keys generated from the results of running + * each element of the collection through the given callback. The corresponding + * value of each key is the last element responsible for generating the key. + * The callback is bound to `thisArg` and invoked with three arguments; + * (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * var keys = [ + * { 'dir': 'left', 'code': 97 }, + * { 'dir': 'right', 'code': 100 } + * ]; + * + * _.indexBy(keys, 'dir'); + * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } + * + * _.indexBy(keys, function(key) { return String.fromCharCode(key.code); }); + * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } + * + * _.indexBy(characters, function(key) { this.fromCharCode(key.code); }, String); + * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } + */ + var indexBy = createAggregator(function(result, value, key) { + result[key] = value; + }); + + /** + * Invokes the method named by `methodName` on each element in the `collection` + * returning an array of the results of each invoked method. Additional arguments + * will be provided to each invoked method. If `methodName` is a function it + * will be invoked for, and `this` bound to, each element in the `collection`. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|string} methodName The name of the method to invoke or + * the function invoked per iteration. + * @param {...*} [arg] Arguments to invoke the method with. + * @returns {Array} Returns a new array of the results of each invoked method. + * @example + * + * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort'); + * // => [[1, 5, 7], [1, 2, 3]] + * + * _.invoke([123, 456], String.prototype.split, ''); + * // => [['1', '2', '3'], ['4', '5', '6']] + */ + function invoke(collection, methodName) { + var args = slice(arguments, 2), + index = -1, + isFunc = typeof methodName == 'function', + length = collection ? collection.length : 0, + result = Array(typeof length == 'number' ? length : 0); + + forEach(collection, function(value) { + result[++index] = (isFunc ? methodName : value[methodName]).apply(value, args); + }); + return result; + } + + /** + * Creates an array of values by running each element in the collection + * through the callback. The callback is bound to `thisArg` and invoked with + * three arguments; (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias collect + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a new array of the results of each `callback` execution. + * @example + * + * _.map([1, 2, 3], function(num) { return num * 3; }); + * // => [3, 6, 9] + * + * _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { return num * 3; }); + * // => [3, 6, 9] (property order is not guaranteed across environments) + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * // using "_.pluck" callback shorthand + * _.map(characters, 'name'); + * // => ['barney', 'fred'] + */ + function map(collection, callback, thisArg) { + var index = -1, + length = collection ? collection.length : 0; + + callback = lodash.createCallback(callback, thisArg, 3); + if (typeof length == 'number') { + var result = Array(length); + while (++index < length) { + result[index] = callback(collection[index], index, collection); + } + } else { + result = []; + forOwn(collection, function(value, key, collection) { + result[++index] = callback(value, key, collection); + }); + } + return result; + } + + /** + * Retrieves the maximum value of a collection. If the collection is empty or + * falsey `-Infinity` is returned. If a callback is provided it will be executed + * for each value in the collection to generate the criterion by which the value + * is ranked. The callback is bound to `thisArg` and invoked with three + * arguments; (value, index, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the maximum value. + * @example + * + * _.max([4, 2, 8, 6]); + * // => 8 + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * _.max(characters, function(chr) { return chr.age; }); + * // => { 'name': 'fred', 'age': 40 }; + * + * // using "_.pluck" callback shorthand + * _.max(characters, 'age'); + * // => { 'name': 'fred', 'age': 40 }; + */ + function max(collection, callback, thisArg) { + var computed = -Infinity, + result = computed; + + // allows working with functions like `_.map` without using + // their `index` argument as a callback + if (typeof callback != 'function' && thisArg && thisArg[callback] === collection) { + callback = null; + } + if (callback == null && isArray(collection)) { + var index = -1, + length = collection.length; + + while (++index < length) { + var value = collection[index]; + if (value > result) { + result = value; + } + } + } else { + callback = (callback == null && isString(collection)) + ? charAtCallback + : lodash.createCallback(callback, thisArg, 3); + + forEach(collection, function(value, index, collection) { + var current = callback(value, index, collection); + if (current > computed) { + computed = current; + result = value; + } + }); + } + return result; + } + + /** + * Retrieves the minimum value of a collection. If the collection is empty or + * falsey `Infinity` is returned. If a callback is provided it will be executed + * for each value in the collection to generate the criterion by which the value + * is ranked. The callback is bound to `thisArg` and invoked with three + * arguments; (value, index, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the minimum value. + * @example + * + * _.min([4, 2, 8, 6]); + * // => 2 + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * _.min(characters, function(chr) { return chr.age; }); + * // => { 'name': 'barney', 'age': 36 }; + * + * // using "_.pluck" callback shorthand + * _.min(characters, 'age'); + * // => { 'name': 'barney', 'age': 36 }; + */ + function min(collection, callback, thisArg) { + var computed = Infinity, + result = computed; + + // allows working with functions like `_.map` without using + // their `index` argument as a callback + if (typeof callback != 'function' && thisArg && thisArg[callback] === collection) { + callback = null; + } + if (callback == null && isArray(collection)) { + var index = -1, + length = collection.length; + + while (++index < length) { + var value = collection[index]; + if (value < result) { + result = value; + } + } + } else { + callback = (callback == null && isString(collection)) + ? charAtCallback + : lodash.createCallback(callback, thisArg, 3); + + forEach(collection, function(value, index, collection) { + var current = callback(value, index, collection); + if (current < computed) { + computed = current; + result = value; + } + }); + } + return result; + } + + /** + * Retrieves the value of a specified property from all elements in the collection. + * + * @static + * @memberOf _ + * @type Function + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {string} property The name of the property to pluck. + * @returns {Array} Returns a new array of property values. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * _.pluck(characters, 'name'); + * // => ['barney', 'fred'] + */ + var pluck = map; + + /** + * Reduces a collection to a value which is the accumulated result of running + * each element in the collection through the callback, where each successive + * callback execution consumes the return value of the previous execution. If + * `accumulator` is not provided the first element of the collection will be + * used as the initial `accumulator` value. The callback is bound to `thisArg` + * and invoked with four arguments; (accumulator, value, index|key, collection). + * + * @static + * @memberOf _ + * @alias foldl, inject + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [accumulator] Initial value of the accumulator. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the accumulated value. + * @example + * + * var sum = _.reduce([1, 2, 3], function(sum, num) { + * return sum + num; + * }); + * // => 6 + * + * var mapped = _.reduce({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) { + * result[key] = num * 3; + * return result; + * }, {}); + * // => { 'a': 3, 'b': 6, 'c': 9 } + */ + function reduce(collection, callback, accumulator, thisArg) { + if (!collection) return accumulator; + var noaccum = arguments.length < 3; + callback = lodash.createCallback(callback, thisArg, 4); + + var index = -1, + length = collection.length; + + if (typeof length == 'number') { + if (noaccum) { + accumulator = collection[++index]; + } + while (++index < length) { + accumulator = callback(accumulator, collection[index], index, collection); + } + } else { + forOwn(collection, function(value, index, collection) { + accumulator = noaccum + ? (noaccum = false, value) + : callback(accumulator, value, index, collection) + }); + } + return accumulator; + } + + /** + * This method is like `_.reduce` except that it iterates over elements + * of a `collection` from right to left. + * + * @static + * @memberOf _ + * @alias foldr + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function} [callback=identity] The function called per iteration. + * @param {*} [accumulator] Initial value of the accumulator. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the accumulated value. + * @example + * + * var list = [[0, 1], [2, 3], [4, 5]]; + * var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []); + * // => [4, 5, 2, 3, 0, 1] + */ + function reduceRight(collection, callback, accumulator, thisArg) { + var noaccum = arguments.length < 3; + callback = lodash.createCallback(callback, thisArg, 4); + forEachRight(collection, function(value, index, collection) { + accumulator = noaccum + ? (noaccum = false, value) + : callback(accumulator, value, index, collection); + }); + return accumulator; + } + + /** + * The opposite of `_.filter` this method returns the elements of a + * collection that the callback does **not** return truey for. + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a new array of elements that failed the callback check. + * @example + * + * var odds = _.reject([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); + * // => [1, 3, 5] + * + * var characters = [ + * { 'name': 'barney', 'age': 36, 'blocked': false }, + * { 'name': 'fred', 'age': 40, 'blocked': true } + * ]; + * + * // using "_.pluck" callback shorthand + * _.reject(characters, 'blocked'); + * // => [{ 'name': 'barney', 'age': 36, 'blocked': false }] + * + * // using "_.where" callback shorthand + * _.reject(characters, { 'age': 36 }); + * // => [{ 'name': 'fred', 'age': 40, 'blocked': true }] + */ + function reject(collection, callback, thisArg) { + callback = lodash.createCallback(callback, thisArg, 3); + return filter(collection, function(value, index, collection) { + return !callback(value, index, collection); + }); + } + + /** + * Retrieves a random element or `n` random elements from a collection. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to sample. + * @param {number} [n] The number of elements to sample. + * @param- {Object} [guard] Allows working with functions like `_.map` + * without using their `index` arguments as `n`. + * @returns {Array} Returns the random sample(s) of `collection`. + * @example + * + * _.sample([1, 2, 3, 4]); + * // => 2 + * + * _.sample([1, 2, 3, 4], 2); + * // => [3, 1] + */ + function sample(collection, n, guard) { + if (collection && typeof collection.length != 'number') { + collection = values(collection); + } + if (n == null || guard) { + return collection ? collection[baseRandom(0, collection.length - 1)] : undefined; + } + var result = shuffle(collection); + result.length = nativeMin(nativeMax(0, n), result.length); + return result; + } + + /** + * Creates an array of shuffled values, using a version of the Fisher-Yates + * shuffle. See http://en.wikipedia.org/wiki/Fisher-Yates_shuffle. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to shuffle. + * @returns {Array} Returns a new shuffled collection. + * @example + * + * _.shuffle([1, 2, 3, 4, 5, 6]); + * // => [4, 1, 6, 3, 5, 2] + */ + function shuffle(collection) { + var index = -1, + length = collection ? collection.length : 0, + result = Array(typeof length == 'number' ? length : 0); + + forEach(collection, function(value) { + var rand = baseRandom(0, ++index); + result[index] = result[rand]; + result[rand] = value; + }); + return result; + } + + /** + * Gets the size of the `collection` by returning `collection.length` for arrays + * and array-like objects or the number of own enumerable properties for objects. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to inspect. + * @returns {number} Returns `collection.length` or number of own enumerable properties. + * @example + * + * _.size([1, 2]); + * // => 2 + * + * _.size({ 'one': 1, 'two': 2, 'three': 3 }); + * // => 3 + * + * _.size('pebbles'); + * // => 7 + */ + function size(collection) { + var length = collection ? collection.length : 0; + return typeof length == 'number' ? length : keys(collection).length; + } + + /** + * Checks if the callback returns a truey value for **any** element of a + * collection. The function returns as soon as it finds a passing value and + * does not iterate over the entire collection. The callback is bound to + * `thisArg` and invoked with three arguments; (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias any + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {boolean} Returns `true` if any element passed the callback check, + * else `false`. + * @example + * + * _.some([null, 0, 'yes', false], Boolean); + * // => true + * + * var characters = [ + * { 'name': 'barney', 'age': 36, 'blocked': false }, + * { 'name': 'fred', 'age': 40, 'blocked': true } + * ]; + * + * // using "_.pluck" callback shorthand + * _.some(characters, 'blocked'); + * // => true + * + * // using "_.where" callback shorthand + * _.some(characters, { 'age': 1 }); + * // => false + */ + function some(collection, callback, thisArg) { + var result; + callback = lodash.createCallback(callback, thisArg, 3); + + var index = -1, + length = collection ? collection.length : 0; + + if (typeof length == 'number') { + while (++index < length) { + if ((result = callback(collection[index], index, collection))) { + break; + } + } + } else { + forOwn(collection, function(value, index, collection) { + return !(result = callback(value, index, collection)); + }); + } + return !!result; + } + + /** + * Creates an array of elements, sorted in ascending order by the results of + * running each element in a collection through the callback. This method + * performs a stable sort, that is, it will preserve the original sort order + * of equal elements. The callback is bound to `thisArg` and invoked with + * three arguments; (value, index|key, collection). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an array of property names is provided for `callback` the collection + * will be sorted by each property value. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Array|Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a new array of sorted elements. + * @example + * + * _.sortBy([1, 2, 3], function(num) { return Math.sin(num); }); + * // => [3, 1, 2] + * + * _.sortBy([1, 2, 3], function(num) { return this.sin(num); }, Math); + * // => [3, 1, 2] + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 }, + * { 'name': 'barney', 'age': 26 }, + * { 'name': 'fred', 'age': 30 } + * ]; + * + * // using "_.pluck" callback shorthand + * _.map(_.sortBy(characters, 'age'), _.values); + * // => [['barney', 26], ['fred', 30], ['barney', 36], ['fred', 40]] + * + * // sorting by multiple properties + * _.map(_.sortBy(characters, ['name', 'age']), _.values); + * // = > [['barney', 26], ['barney', 36], ['fred', 30], ['fred', 40]] + */ + function sortBy(collection, callback, thisArg) { + var index = -1, + isArr = isArray(callback), + length = collection ? collection.length : 0, + result = Array(typeof length == 'number' ? length : 0); + + if (!isArr) { + callback = lodash.createCallback(callback, thisArg, 3); + } + forEach(collection, function(value, key, collection) { + var object = result[++index] = getObject(); + if (isArr) { + object.criteria = map(callback, function(key) { return value[key]; }); + } else { + (object.criteria = getArray())[0] = callback(value, key, collection); + } + object.index = index; + object.value = value; + }); + + length = result.length; + result.sort(compareAscending); + while (length--) { + var object = result[length]; + result[length] = object.value; + if (!isArr) { + releaseArray(object.criteria); + } + releaseObject(object); + } + return result; + } + + /** + * Converts the `collection` to an array. + * + * @static + * @memberOf _ + * @category Collections + * @param {Array|Object|string} collection The collection to convert. + * @returns {Array} Returns the new converted array. + * @example + * + * (function() { return _.toArray(arguments).slice(1); })(1, 2, 3, 4); + * // => [2, 3, 4] + */ + function toArray(collection) { + if (collection && typeof collection.length == 'number') { + return slice(collection); + } + return values(collection); + } + + /** + * Performs a deep comparison of each element in a `collection` to the given + * `properties` object, returning an array of all elements that have equivalent + * property values. + * + * @static + * @memberOf _ + * @type Function + * @category Collections + * @param {Array|Object|string} collection The collection to iterate over. + * @param {Object} props The object of property values to filter by. + * @returns {Array} Returns a new array of elements that have the given properties. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36, 'pets': ['hoppy'] }, + * { 'name': 'fred', 'age': 40, 'pets': ['baby puss', 'dino'] } + * ]; + * + * _.where(characters, { 'age': 36 }); + * // => [{ 'name': 'barney', 'age': 36, 'pets': ['hoppy'] }] + * + * _.where(characters, { 'pets': ['dino'] }); + * // => [{ 'name': 'fred', 'age': 40, 'pets': ['baby puss', 'dino'] }] + */ + var where = filter; + + /*--------------------------------------------------------------------------*/ + + /** + * Creates an array with all falsey values removed. The values `false`, `null`, + * `0`, `""`, `undefined`, and `NaN` are all falsey. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to compact. + * @returns {Array} Returns a new array of filtered values. + * @example + * + * _.compact([0, 1, false, 2, '', 3]); + * // => [1, 2, 3] + */ + function compact(array) { + var index = -1, + length = array ? array.length : 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value) { + result.push(value); + } + } + return result; + } + + /** + * Creates an array excluding all values of the provided arrays using strict + * equality for comparisons, i.e. `===`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to process. + * @param {...Array} [values] The arrays of values to exclude. + * @returns {Array} Returns a new array of filtered values. + * @example + * + * _.difference([1, 2, 3, 4, 5], [5, 2, 10]); + * // => [1, 3, 4] + */ + function difference(array) { + return baseDifference(array, baseFlatten(arguments, true, true, 1)); + } + + /** + * This method is like `_.find` except that it returns the index of the first + * element that passes the callback check, instead of the element itself. + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to search. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36, 'blocked': false }, + * { 'name': 'fred', 'age': 40, 'blocked': true }, + * { 'name': 'pebbles', 'age': 1, 'blocked': false } + * ]; + * + * _.findIndex(characters, function(chr) { + * return chr.age < 20; + * }); + * // => 2 + * + * // using "_.where" callback shorthand + * _.findIndex(characters, { 'age': 36 }); + * // => 0 + * + * // using "_.pluck" callback shorthand + * _.findIndex(characters, 'blocked'); + * // => 1 + */ + function findIndex(array, callback, thisArg) { + var index = -1, + length = array ? array.length : 0; + + callback = lodash.createCallback(callback, thisArg, 3); + while (++index < length) { + if (callback(array[index], index, array)) { + return index; + } + } + return -1; + } + + /** + * This method is like `_.findIndex` except that it iterates over elements + * of a `collection` from right to left. + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to search. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36, 'blocked': true }, + * { 'name': 'fred', 'age': 40, 'blocked': false }, + * { 'name': 'pebbles', 'age': 1, 'blocked': true } + * ]; + * + * _.findLastIndex(characters, function(chr) { + * return chr.age > 30; + * }); + * // => 1 + * + * // using "_.where" callback shorthand + * _.findLastIndex(characters, { 'age': 36 }); + * // => 0 + * + * // using "_.pluck" callback shorthand + * _.findLastIndex(characters, 'blocked'); + * // => 2 + */ + function findLastIndex(array, callback, thisArg) { + var length = array ? array.length : 0; + callback = lodash.createCallback(callback, thisArg, 3); + while (length--) { + if (callback(array[length], length, array)) { + return length; + } + } + return -1; + } + + /** + * Gets the first element or first `n` elements of an array. If a callback + * is provided elements at the beginning of the array are returned as long + * as the callback returns truey. The callback is bound to `thisArg` and + * invoked with three arguments; (value, index, array). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias head, take + * @category Arrays + * @param {Array} array The array to query. + * @param {Function|Object|number|string} [callback] The function called + * per element or the number of elements to return. If a property name or + * object is provided it will be used to create a "_.pluck" or "_.where" + * style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the first element(s) of `array`. + * @example + * + * _.first([1, 2, 3]); + * // => 1 + * + * _.first([1, 2, 3], 2); + * // => [1, 2] + * + * _.first([1, 2, 3], function(num) { + * return num < 3; + * }); + * // => [1, 2] + * + * var characters = [ + * { 'name': 'barney', 'blocked': true, 'employer': 'slate' }, + * { 'name': 'fred', 'blocked': false, 'employer': 'slate' }, + * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } + * ]; + * + * // using "_.pluck" callback shorthand + * _.first(characters, 'blocked'); + * // => [{ 'name': 'barney', 'blocked': true, 'employer': 'slate' }] + * + * // using "_.where" callback shorthand + * _.pluck(_.first(characters, { 'employer': 'slate' }), 'name'); + * // => ['barney', 'fred'] + */ + function first(array, callback, thisArg) { + var n = 0, + length = array ? array.length : 0; + + if (typeof callback != 'number' && callback != null) { + var index = -1; + callback = lodash.createCallback(callback, thisArg, 3); + while (++index < length && callback(array[index], index, array)) { + n++; + } + } else { + n = callback; + if (n == null || thisArg) { + return array ? array[0] : undefined; + } + } + return slice(array, 0, nativeMin(nativeMax(0, n), length)); + } + + /** + * Flattens a nested array (the nesting can be to any depth). If `isShallow` + * is truey, the array will only be flattened a single level. If a callback + * is provided each element of the array is passed through the callback before + * flattening. The callback is bound to `thisArg` and invoked with three + * arguments; (value, index, array). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to flatten. + * @param {boolean} [isShallow=false] A flag to restrict flattening to a single level. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a new flattened array. + * @example + * + * _.flatten([1, [2], [3, [[4]]]]); + * // => [1, 2, 3, 4]; + * + * _.flatten([1, [2], [3, [[4]]]], true); + * // => [1, 2, 3, [[4]]]; + * + * var characters = [ + * { 'name': 'barney', 'age': 30, 'pets': ['hoppy'] }, + * { 'name': 'fred', 'age': 40, 'pets': ['baby puss', 'dino'] } + * ]; + * + * // using "_.pluck" callback shorthand + * _.flatten(characters, 'pets'); + * // => ['hoppy', 'baby puss', 'dino'] + */ + function flatten(array, isShallow, callback, thisArg) { + // juggle arguments + if (typeof isShallow != 'boolean' && isShallow != null) { + thisArg = callback; + callback = (typeof isShallow != 'function' && thisArg && thisArg[isShallow] === array) ? null : isShallow; + isShallow = false; + } + if (callback != null) { + array = map(array, callback, thisArg); + } + return baseFlatten(array, isShallow); + } + + /** + * Gets the index at which the first occurrence of `value` is found using + * strict equality for comparisons, i.e. `===`. If the array is already sorted + * providing `true` for `fromIndex` will run a faster binary search. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to search. + * @param {*} value The value to search for. + * @param {boolean|number} [fromIndex=0] The index to search from or `true` + * to perform a binary search on a sorted array. + * @returns {number} Returns the index of the matched value or `-1`. + * @example + * + * _.indexOf([1, 2, 3, 1, 2, 3], 2); + * // => 1 + * + * _.indexOf([1, 2, 3, 1, 2, 3], 2, 3); + * // => 4 + * + * _.indexOf([1, 1, 2, 2, 3, 3], 2, true); + * // => 2 + */ + function indexOf(array, value, fromIndex) { + if (typeof fromIndex == 'number') { + var length = array ? array.length : 0; + fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex || 0); + } else if (fromIndex) { + var index = sortedIndex(array, value); + return array[index] === value ? index : -1; + } + return baseIndexOf(array, value, fromIndex); + } + + /** + * Gets all but the last element or last `n` elements of an array. If a + * callback is provided elements at the end of the array are excluded from + * the result as long as the callback returns truey. The callback is bound + * to `thisArg` and invoked with three arguments; (value, index, array). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to query. + * @param {Function|Object|number|string} [callback=1] The function called + * per element or the number of elements to exclude. If a property name or + * object is provided it will be used to create a "_.pluck" or "_.where" + * style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a slice of `array`. + * @example + * + * _.initial([1, 2, 3]); + * // => [1, 2] + * + * _.initial([1, 2, 3], 2); + * // => [1] + * + * _.initial([1, 2, 3], function(num) { + * return num > 1; + * }); + * // => [1] + * + * var characters = [ + * { 'name': 'barney', 'blocked': false, 'employer': 'slate' }, + * { 'name': 'fred', 'blocked': true, 'employer': 'slate' }, + * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } + * ]; + * + * // using "_.pluck" callback shorthand + * _.initial(characters, 'blocked'); + * // => [{ 'name': 'barney', 'blocked': false, 'employer': 'slate' }] + * + * // using "_.where" callback shorthand + * _.pluck(_.initial(characters, { 'employer': 'na' }), 'name'); + * // => ['barney', 'fred'] + */ + function initial(array, callback, thisArg) { + var n = 0, + length = array ? array.length : 0; + + if (typeof callback != 'number' && callback != null) { + var index = length; + callback = lodash.createCallback(callback, thisArg, 3); + while (index-- && callback(array[index], index, array)) { + n++; + } + } else { + n = (callback == null || thisArg) ? 1 : callback || n; + } + return slice(array, 0, nativeMin(nativeMax(0, length - n), length)); + } + + /** + * Creates an array of unique values present in all provided arrays using + * strict equality for comparisons, i.e. `===`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {...Array} [array] The arrays to inspect. + * @returns {Array} Returns an array of shared values. + * @example + * + * _.intersection([1, 2, 3], [5, 2, 1, 4], [2, 1]); + * // => [1, 2] + */ + function intersection() { + var args = [], + argsIndex = -1, + argsLength = arguments.length, + caches = getArray(), + indexOf = getIndexOf(), + trustIndexOf = indexOf === baseIndexOf, + seen = getArray(); + + while (++argsIndex < argsLength) { + var value = arguments[argsIndex]; + if (isArray(value) || isArguments(value)) { + args.push(value); + caches.push(trustIndexOf && value.length >= largeArraySize && + createCache(argsIndex ? args[argsIndex] : seen)); + } + } + var array = args[0], + index = -1, + length = array ? array.length : 0, + result = []; + + outer: + while (++index < length) { + var cache = caches[0]; + value = array[index]; + + if ((cache ? cacheIndexOf(cache, value) : indexOf(seen, value)) < 0) { + argsIndex = argsLength; + (cache || seen).push(value); + while (--argsIndex) { + cache = caches[argsIndex]; + if ((cache ? cacheIndexOf(cache, value) : indexOf(args[argsIndex], value)) < 0) { + continue outer; + } + } + result.push(value); + } + } + while (argsLength--) { + cache = caches[argsLength]; + if (cache) { + releaseObject(cache); + } + } + releaseArray(caches); + releaseArray(seen); + return result; + } + + /** + * Gets the last element or last `n` elements of an array. If a callback is + * provided elements at the end of the array are returned as long as the + * callback returns truey. The callback is bound to `thisArg` and invoked + * with three arguments; (value, index, array). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to query. + * @param {Function|Object|number|string} [callback] The function called + * per element or the number of elements to return. If a property name or + * object is provided it will be used to create a "_.pluck" or "_.where" + * style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {*} Returns the last element(s) of `array`. + * @example + * + * _.last([1, 2, 3]); + * // => 3 + * + * _.last([1, 2, 3], 2); + * // => [2, 3] + * + * _.last([1, 2, 3], function(num) { + * return num > 1; + * }); + * // => [2, 3] + * + * var characters = [ + * { 'name': 'barney', 'blocked': false, 'employer': 'slate' }, + * { 'name': 'fred', 'blocked': true, 'employer': 'slate' }, + * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } + * ]; + * + * // using "_.pluck" callback shorthand + * _.pluck(_.last(characters, 'blocked'), 'name'); + * // => ['fred', 'pebbles'] + * + * // using "_.where" callback shorthand + * _.last(characters, { 'employer': 'na' }); + * // => [{ 'name': 'pebbles', 'blocked': true, 'employer': 'na' }] + */ + function last(array, callback, thisArg) { + var n = 0, + length = array ? array.length : 0; + + if (typeof callback != 'number' && callback != null) { + var index = length; + callback = lodash.createCallback(callback, thisArg, 3); + while (index-- && callback(array[index], index, array)) { + n++; + } + } else { + n = callback; + if (n == null || thisArg) { + return array ? array[length - 1] : undefined; + } + } + return slice(array, nativeMax(0, length - n)); + } + + /** + * Gets the index at which the last occurrence of `value` is found using strict + * equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used + * as the offset from the end of the collection. + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to search. + * @param {*} value The value to search for. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the matched value or `-1`. + * @example + * + * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2); + * // => 4 + * + * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3); + * // => 1 + */ + function lastIndexOf(array, value, fromIndex) { + var index = array ? array.length : 0; + if (typeof fromIndex == 'number') { + index = (fromIndex < 0 ? nativeMax(0, index + fromIndex) : nativeMin(fromIndex, index - 1)) + 1; + } + while (index--) { + if (array[index] === value) { + return index; + } + } + return -1; + } + + /** + * Removes all provided values from the given array using strict equality for + * comparisons, i.e. `===`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to modify. + * @param {...*} [value] The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3, 1, 2, 3]; + * _.pull(array, 2, 3); + * console.log(array); + * // => [1, 1] + */ + function pull(array) { + var args = arguments, + argsIndex = 0, + argsLength = args.length, + length = array ? array.length : 0; + + while (++argsIndex < argsLength) { + var index = -1, + value = args[argsIndex]; + while (++index < length) { + if (array[index] === value) { + splice.call(array, index--, 1); + length--; + } + } + } + return array; + } + + /** + * Creates an array of numbers (positive and/or negative) progressing from + * `start` up to but not including `end`. If `start` is less than `stop` a + * zero-length range is created unless a negative `step` is specified. + * + * @static + * @memberOf _ + * @category Arrays + * @param {number} [start=0] The start of the range. + * @param {number} end The end of the range. + * @param {number} [step=1] The value to increment or decrement by. + * @returns {Array} Returns a new range array. + * @example + * + * _.range(4); + * // => [0, 1, 2, 3] + * + * _.range(1, 5); + * // => [1, 2, 3, 4] + * + * _.range(0, 20, 5); + * // => [0, 5, 10, 15] + * + * _.range(0, -4, -1); + * // => [0, -1, -2, -3] + * + * _.range(1, 4, 0); + * // => [1, 1, 1] + * + * _.range(0); + * // => [] + */ + function range(start, end, step) { + start = +start || 0; + step = typeof step == 'number' ? step : (+step || 1); + + if (end == null) { + end = start; + start = 0; + } + // use `Array(length)` so engines like Chakra and V8 avoid slower modes + // http://youtu.be/XAqIpGU8ZZk#t=17m25s + var index = -1, + length = nativeMax(0, ceil((end - start) / (step || 1))), + result = Array(length); + + while (++index < length) { + result[index] = start; + start += step; + } + return result; + } + + /** + * Removes all elements from an array that the callback returns truey for + * and returns an array of removed elements. The callback is bound to `thisArg` + * and invoked with three arguments; (value, index, array). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to modify. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a new array of removed elements. + * @example + * + * var array = [1, 2, 3, 4, 5, 6]; + * var evens = _.remove(array, function(num) { return num % 2 == 0; }); + * + * console.log(array); + * // => [1, 3, 5] + * + * console.log(evens); + * // => [2, 4, 6] + */ + function remove(array, callback, thisArg) { + var index = -1, + length = array ? array.length : 0, + result = []; + + callback = lodash.createCallback(callback, thisArg, 3); + while (++index < length) { + var value = array[index]; + if (callback(value, index, array)) { + result.push(value); + splice.call(array, index--, 1); + length--; + } + } + return result; + } + + /** + * The opposite of `_.initial` this method gets all but the first element or + * first `n` elements of an array. If a callback function is provided elements + * at the beginning of the array are excluded from the result as long as the + * callback returns truey. The callback is bound to `thisArg` and invoked + * with three arguments; (value, index, array). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias drop, tail + * @category Arrays + * @param {Array} array The array to query. + * @param {Function|Object|number|string} [callback=1] The function called + * per element or the number of elements to exclude. If a property name or + * object is provided it will be used to create a "_.pluck" or "_.where" + * style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a slice of `array`. + * @example + * + * _.rest([1, 2, 3]); + * // => [2, 3] + * + * _.rest([1, 2, 3], 2); + * // => [3] + * + * _.rest([1, 2, 3], function(num) { + * return num < 3; + * }); + * // => [3] + * + * var characters = [ + * { 'name': 'barney', 'blocked': true, 'employer': 'slate' }, + * { 'name': 'fred', 'blocked': false, 'employer': 'slate' }, + * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } + * ]; + * + * // using "_.pluck" callback shorthand + * _.pluck(_.rest(characters, 'blocked'), 'name'); + * // => ['fred', 'pebbles'] + * + * // using "_.where" callback shorthand + * _.rest(characters, { 'employer': 'slate' }); + * // => [{ 'name': 'pebbles', 'blocked': true, 'employer': 'na' }] + */ + function rest(array, callback, thisArg) { + if (typeof callback != 'number' && callback != null) { + var n = 0, + index = -1, + length = array ? array.length : 0; + + callback = lodash.createCallback(callback, thisArg, 3); + while (++index < length && callback(array[index], index, array)) { + n++; + } + } else { + n = (callback == null || thisArg) ? 1 : nativeMax(0, callback); + } + return slice(array, n); + } + + /** + * Uses a binary search to determine the smallest index at which a value + * should be inserted into a given sorted array in order to maintain the sort + * order of the array. If a callback is provided it will be executed for + * `value` and each element of `array` to compute their sort ranking. The + * callback is bound to `thisArg` and invoked with one argument; (value). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to inspect. + * @param {*} value The value to evaluate. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedIndex([20, 30, 50], 40); + * // => 2 + * + * // using "_.pluck" callback shorthand + * _.sortedIndex([{ 'x': 20 }, { 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x'); + * // => 2 + * + * var dict = { + * 'wordToNumber': { 'twenty': 20, 'thirty': 30, 'fourty': 40, 'fifty': 50 } + * }; + * + * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) { + * return dict.wordToNumber[word]; + * }); + * // => 2 + * + * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) { + * return this.wordToNumber[word]; + * }, dict); + * // => 2 + */ + function sortedIndex(array, value, callback, thisArg) { + var low = 0, + high = array ? array.length : low; + + // explicitly reference `identity` for better inlining in Firefox + callback = callback ? lodash.createCallback(callback, thisArg, 1) : identity; + value = callback(value); + + while (low < high) { + var mid = (low + high) >>> 1; + (callback(array[mid]) < value) + ? low = mid + 1 + : high = mid; + } + return low; + } + + /** + * Creates an array of unique values, in order, of the provided arrays using + * strict equality for comparisons, i.e. `===`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {...Array} [array] The arrays to inspect. + * @returns {Array} Returns an array of combined values. + * @example + * + * _.union([1, 2, 3], [5, 2, 1, 4], [2, 1]); + * // => [1, 2, 3, 5, 4] + */ + function union() { + return baseUniq(baseFlatten(arguments, true, true)); + } + + /** + * Creates a duplicate-value-free version of an array using strict equality + * for comparisons, i.e. `===`. If the array is sorted, providing + * `true` for `isSorted` will use a faster algorithm. If a callback is provided + * each element of `array` is passed through the callback before uniqueness + * is computed. The callback is bound to `thisArg` and invoked with three + * arguments; (value, index, array). + * + * If a property name is provided for `callback` the created "_.pluck" style + * callback will return the property value of the given element. + * + * If an object is provided for `callback` the created "_.where" style callback + * will return `true` for elements that have the properties of the given object, + * else `false`. + * + * @static + * @memberOf _ + * @alias unique + * @category Arrays + * @param {Array} array The array to process. + * @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted. + * @param {Function|Object|string} [callback=identity] The function called + * per iteration. If a property name or object is provided it will be used + * to create a "_.pluck" or "_.where" style callback, respectively. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns a duplicate-value-free array. + * @example + * + * _.uniq([1, 2, 1, 3, 1]); + * // => [1, 2, 3] + * + * _.uniq([1, 1, 2, 2, 3], true); + * // => [1, 2, 3] + * + * _.uniq(['A', 'b', 'C', 'a', 'B', 'c'], function(letter) { return letter.toLowerCase(); }); + * // => ['A', 'b', 'C'] + * + * _.uniq([1, 2.5, 3, 1.5, 2, 3.5], function(num) { return this.floor(num); }, Math); + * // => [1, 2.5, 3] + * + * // using "_.pluck" callback shorthand + * _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + function uniq(array, isSorted, callback, thisArg) { + // juggle arguments + if (typeof isSorted != 'boolean' && isSorted != null) { + thisArg = callback; + callback = (typeof isSorted != 'function' && thisArg && thisArg[isSorted] === array) ? null : isSorted; + isSorted = false; + } + if (callback != null) { + callback = lodash.createCallback(callback, thisArg, 3); + } + return baseUniq(array, isSorted, callback); + } + + /** + * Creates an array excluding all provided values using strict equality for + * comparisons, i.e. `===`. + * + * @static + * @memberOf _ + * @category Arrays + * @param {Array} array The array to filter. + * @param {...*} [value] The values to exclude. + * @returns {Array} Returns a new array of filtered values. + * @example + * + * _.without([1, 2, 1, 0, 3, 1, 4], 0, 1); + * // => [2, 3, 4] + */ + function without(array) { + return baseDifference(array, slice(arguments, 1)); + } + + /** + * Creates an array that is the symmetric difference of the provided arrays. + * See http://en.wikipedia.org/wiki/Symmetric_difference. + * + * @static + * @memberOf _ + * @category Arrays + * @param {...Array} [array] The arrays to inspect. + * @returns {Array} Returns an array of values. + * @example + * + * _.xor([1, 2, 3], [5, 2, 1, 4]); + * // => [3, 5, 4] + * + * _.xor([1, 2, 5], [2, 3, 5], [3, 4, 5]); + * // => [1, 4, 5] + */ + function xor() { + var index = -1, + length = arguments.length; + + while (++index < length) { + var array = arguments[index]; + if (isArray(array) || isArguments(array)) { + var result = result + ? baseUniq(baseDifference(result, array).concat(baseDifference(array, result))) + : array; + } + } + return result || []; + } + + /** + * Creates an array of grouped elements, the first of which contains the first + * elements of the given arrays, the second of which contains the second + * elements of the given arrays, and so on. + * + * @static + * @memberOf _ + * @alias unzip + * @category Arrays + * @param {...Array} [array] Arrays to process. + * @returns {Array} Returns a new array of grouped elements. + * @example + * + * _.zip(['fred', 'barney'], [30, 40], [true, false]); + * // => [['fred', 30, true], ['barney', 40, false]] + */ + function zip() { + var array = arguments.length > 1 ? arguments : arguments[0], + index = -1, + length = array ? max(pluck(array, 'length')) : 0, + result = Array(length < 0 ? 0 : length); + + while (++index < length) { + result[index] = pluck(array, index); + } + return result; + } + + /** + * Creates an object composed from arrays of `keys` and `values`. Provide + * either a single two dimensional array, i.e. `[[key1, value1], [key2, value2]]` + * or two arrays, one of `keys` and one of corresponding `values`. + * + * @static + * @memberOf _ + * @alias object + * @category Arrays + * @param {Array} keys The array of keys. + * @param {Array} [values=[]] The array of values. + * @returns {Object} Returns an object composed of the given keys and + * corresponding values. + * @example + * + * _.zipObject(['fred', 'barney'], [30, 40]); + * // => { 'fred': 30, 'barney': 40 } + */ + function zipObject(keys, values) { + var index = -1, + length = keys ? keys.length : 0, + result = {}; + + if (!values && length && !isArray(keys[0])) { + values = []; + } + while (++index < length) { + var key = keys[index]; + if (values) { + result[key] = values[index]; + } else if (key) { + result[key[0]] = key[1]; + } + } + return result; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Creates a function that executes `func`, with the `this` binding and + * arguments of the created function, only after being called `n` times. + * + * @static + * @memberOf _ + * @category Functions + * @param {number} n The number of times the function must be called before + * `func` is executed. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var saves = ['profile', 'settings']; + * + * var done = _.after(saves.length, function() { + * console.log('Done saving!'); + * }); + * + * _.forEach(saves, function(type) { + * asyncSave({ 'type': type, 'complete': done }); + * }); + * // => logs 'Done saving!', after all saves have completed + */ + function after(n, func) { + if (!isFunction(func)) { + throw new TypeError; + } + return function() { + if (--n < 1) { + return func.apply(this, arguments); + } + }; + } + + /** + * Creates a function that, when called, invokes `func` with the `this` + * binding of `thisArg` and prepends any additional `bind` arguments to those + * provided to the bound function. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to bind. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {...*} [arg] Arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * var func = function(greeting) { + * return greeting + ' ' + this.name; + * }; + * + * func = _.bind(func, { 'name': 'fred' }, 'hi'); + * func(); + * // => 'hi fred' + */ + function bind(func, thisArg) { + return arguments.length > 2 + ? createWrapper(func, 17, slice(arguments, 2), null, thisArg) + : createWrapper(func, 1, null, null, thisArg); + } + + /** + * Binds methods of an object to the object itself, overwriting the existing + * method. Method names may be specified as individual arguments or as arrays + * of method names. If no method names are provided all the function properties + * of `object` will be bound. + * + * @static + * @memberOf _ + * @category Functions + * @param {Object} object The object to bind and assign the bound methods to. + * @param {...string} [methodName] The object method names to + * bind, specified as individual method names or arrays of method names. + * @returns {Object} Returns `object`. + * @example + * + * var view = { + * 'label': 'docs', + * 'onClick': function() { console.log('clicked ' + this.label); } + * }; + * + * _.bindAll(view); + * jQuery('#docs').on('click', view.onClick); + * // => logs 'clicked docs', when the button is clicked + */ + function bindAll(object) { + var funcs = arguments.length > 1 ? baseFlatten(arguments, true, false, 1) : functions(object), + index = -1, + length = funcs.length; + + while (++index < length) { + var key = funcs[index]; + object[key] = createWrapper(object[key], 1, null, null, object); + } + return object; + } + + /** + * Creates a function that, when called, invokes the method at `object[key]` + * and prepends any additional `bindKey` arguments to those provided to the bound + * function. This method differs from `_.bind` by allowing bound functions to + * reference methods that will be redefined or don't yet exist. + * See http://michaux.ca/articles/lazy-function-definition-pattern. + * + * @static + * @memberOf _ + * @category Functions + * @param {Object} object The object the method belongs to. + * @param {string} key The key of the method. + * @param {...*} [arg] Arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * var object = { + * 'name': 'fred', + * 'greet': function(greeting) { + * return greeting + ' ' + this.name; + * } + * }; + * + * var func = _.bindKey(object, 'greet', 'hi'); + * func(); + * // => 'hi fred' + * + * object.greet = function(greeting) { + * return greeting + 'ya ' + this.name + '!'; + * }; + * + * func(); + * // => 'hiya fred!' + */ + function bindKey(object, key) { + return arguments.length > 2 + ? createWrapper(key, 19, slice(arguments, 2), null, object) + : createWrapper(key, 3, null, null, object); + } + + /** + * Creates a function that is the composition of the provided functions, + * where each function consumes the return value of the function that follows. + * For example, composing the functions `f()`, `g()`, and `h()` produces `f(g(h()))`. + * Each function is executed with the `this` binding of the composed function. + * + * @static + * @memberOf _ + * @category Functions + * @param {...Function} [func] Functions to compose. + * @returns {Function} Returns the new composed function. + * @example + * + * var realNameMap = { + * 'pebbles': 'penelope' + * }; + * + * var format = function(name) { + * name = realNameMap[name.toLowerCase()] || name; + * return name.charAt(0).toUpperCase() + name.slice(1).toLowerCase(); + * }; + * + * var greet = function(formatted) { + * return 'Hiya ' + formatted + '!'; + * }; + * + * var welcome = _.compose(greet, format); + * welcome('pebbles'); + * // => 'Hiya Penelope!' + */ + function compose() { + var funcs = arguments, + length = funcs.length; + + while (length--) { + if (!isFunction(funcs[length])) { + throw new TypeError; + } + } + return function() { + var args = arguments, + length = funcs.length; + + while (length--) { + args = [funcs[length].apply(this, args)]; + } + return args[0]; + }; + } + + /** + * Creates a function which accepts one or more arguments of `func` that when + * invoked either executes `func` returning its result, if all `func` arguments + * have been provided, or returns a function that accepts one or more of the + * remaining `func` arguments, and so on. The arity of `func` can be specified + * if `func.length` is not sufficient. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @returns {Function} Returns the new curried function. + * @example + * + * var curried = _.curry(function(a, b, c) { + * console.log(a + b + c); + * }); + * + * curried(1)(2)(3); + * // => 6 + * + * curried(1, 2)(3); + * // => 6 + * + * curried(1, 2, 3); + * // => 6 + */ + function curry(func, arity) { + arity = typeof arity == 'number' ? arity : (+arity || func.length); + return createWrapper(func, 4, null, null, null, arity); + } + + /** + * Creates a function that will delay the execution of `func` until after + * `wait` milliseconds have elapsed since the last time it was invoked. + * Provide an options object to indicate that `func` should be invoked on + * the leading and/or trailing edge of the `wait` timeout. Subsequent calls + * to the debounced function will return the result of the last `func` call. + * + * Note: If `leading` and `trailing` options are `true` `func` will be called + * on the trailing edge of the timeout only if the the debounced function is + * invoked more than once during the `wait` timeout. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to debounce. + * @param {number} wait The number of milliseconds to delay. + * @param {Object} [options] The options object. + * @param {boolean} [options.leading=false] Specify execution on the leading edge of the timeout. + * @param {number} [options.maxWait] The maximum time `func` is allowed to be delayed before it's called. + * @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout. + * @returns {Function} Returns the new debounced function. + * @example + * + * // avoid costly calculations while the window size is in flux + * var lazyLayout = _.debounce(calculateLayout, 150); + * jQuery(window).on('resize', lazyLayout); + * + * // execute `sendMail` when the click event is fired, debouncing subsequent calls + * jQuery('#postbox').on('click', _.debounce(sendMail, 300, { + * 'leading': true, + * 'trailing': false + * }); + * + * // ensure `batchLog` is executed once after 1 second of debounced calls + * var source = new EventSource('/stream'); + * source.addEventListener('message', _.debounce(batchLog, 250, { + * 'maxWait': 1000 + * }, false); + */ + function debounce(func, wait, options) { + var args, + maxTimeoutId, + result, + stamp, + thisArg, + timeoutId, + trailingCall, + lastCalled = 0, + maxWait = false, + trailing = true; + + if (!isFunction(func)) { + throw new TypeError; + } + wait = nativeMax(0, wait) || 0; + if (options === true) { + var leading = true; + trailing = false; + } else if (isObject(options)) { + leading = options.leading; + maxWait = 'maxWait' in options && (nativeMax(wait, options.maxWait) || 0); + trailing = 'trailing' in options ? options.trailing : trailing; + } + var delayed = function() { + var remaining = wait - (now() - stamp); + if (remaining <= 0) { + if (maxTimeoutId) { + clearTimeout(maxTimeoutId); + } + var isCalled = trailingCall; + maxTimeoutId = timeoutId = trailingCall = undefined; + if (isCalled) { + lastCalled = now(); + result = func.apply(thisArg, args); + if (!timeoutId && !maxTimeoutId) { + args = thisArg = null; + } + } + } else { + timeoutId = setTimeout(delayed, remaining); + } + }; + + var maxDelayed = function() { + if (timeoutId) { + clearTimeout(timeoutId); + } + maxTimeoutId = timeoutId = trailingCall = undefined; + if (trailing || (maxWait !== wait)) { + lastCalled = now(); + result = func.apply(thisArg, args); + if (!timeoutId && !maxTimeoutId) { + args = thisArg = null; + } + } + }; + + return function() { + args = arguments; + stamp = now(); + thisArg = this; + trailingCall = trailing && (timeoutId || !leading); + + if (maxWait === false) { + var leadingCall = leading && !timeoutId; + } else { + if (!maxTimeoutId && !leading) { + lastCalled = stamp; + } + var remaining = maxWait - (stamp - lastCalled), + isCalled = remaining <= 0; + + if (isCalled) { + if (maxTimeoutId) { + maxTimeoutId = clearTimeout(maxTimeoutId); + } + lastCalled = stamp; + result = func.apply(thisArg, args); + } + else if (!maxTimeoutId) { + maxTimeoutId = setTimeout(maxDelayed, remaining); + } + } + if (isCalled && timeoutId) { + timeoutId = clearTimeout(timeoutId); + } + else if (!timeoutId && wait !== maxWait) { + timeoutId = setTimeout(delayed, wait); + } + if (leadingCall) { + isCalled = true; + result = func.apply(thisArg, args); + } + if (isCalled && !timeoutId && !maxTimeoutId) { + args = thisArg = null; + } + return result; + }; + } + + /** + * Defers executing the `func` function until the current call stack has cleared. + * Additional arguments will be provided to `func` when it is invoked. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to defer. + * @param {...*} [arg] Arguments to invoke the function with. + * @returns {number} Returns the timer id. + * @example + * + * _.defer(function(text) { console.log(text); }, 'deferred'); + * // logs 'deferred' after one or more milliseconds + */ + function defer(func) { + if (!isFunction(func)) { + throw new TypeError; + } + var args = slice(arguments, 1); + return setTimeout(function() { func.apply(undefined, args); }, 1); + } + + /** + * Executes the `func` function after `wait` milliseconds. Additional arguments + * will be provided to `func` when it is invoked. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay execution. + * @param {...*} [arg] Arguments to invoke the function with. + * @returns {number} Returns the timer id. + * @example + * + * _.delay(function(text) { console.log(text); }, 1000, 'later'); + * // => logs 'later' after one second + */ + function delay(func, wait) { + if (!isFunction(func)) { + throw new TypeError; + } + var args = slice(arguments, 2); + return setTimeout(function() { func.apply(undefined, args); }, wait); + } + + /** + * Creates a function that memoizes the result of `func`. If `resolver` is + * provided it will be used to determine the cache key for storing the result + * based on the arguments provided to the memoized function. By default, the + * first argument provided to the memoized function is used as the cache key. + * The `func` is executed with the `this` binding of the memoized function. + * The result cache is exposed as the `cache` property on the memoized function. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to have its output memoized. + * @param {Function} [resolver] A function used to resolve the cache key. + * @returns {Function} Returns the new memoizing function. + * @example + * + * var fibonacci = _.memoize(function(n) { + * return n < 2 ? n : fibonacci(n - 1) + fibonacci(n - 2); + * }); + * + * fibonacci(9) + * // => 34 + * + * var data = { + * 'fred': { 'name': 'fred', 'age': 40 }, + * 'pebbles': { 'name': 'pebbles', 'age': 1 } + * }; + * + * // modifying the result cache + * var get = _.memoize(function(name) { return data[name]; }, _.identity); + * get('pebbles'); + * // => { 'name': 'pebbles', 'age': 1 } + * + * get.cache.pebbles.name = 'penelope'; + * get('pebbles'); + * // => { 'name': 'penelope', 'age': 1 } + */ + function memoize(func, resolver) { + if (!isFunction(func)) { + throw new TypeError; + } + var memoized = function() { + var cache = memoized.cache, + key = resolver ? resolver.apply(this, arguments) : keyPrefix + arguments[0]; + + return hasOwnProperty.call(cache, key) + ? cache[key] + : (cache[key] = func.apply(this, arguments)); + } + memoized.cache = {}; + return memoized; + } + + /** + * Creates a function that is restricted to execute `func` once. Repeat calls to + * the function will return the value of the first call. The `func` is executed + * with the `this` binding of the created function. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var initialize = _.once(createApplication); + * initialize(); + * initialize(); + * // `initialize` executes `createApplication` once + */ + function once(func) { + var ran, + result; + + if (!isFunction(func)) { + throw new TypeError; + } + return function() { + if (ran) { + return result; + } + ran = true; + result = func.apply(this, arguments); + + // clear the `func` variable so the function may be garbage collected + func = null; + return result; + }; + } + + /** + * Creates a function that, when called, invokes `func` with any additional + * `partial` arguments prepended to those provided to the new function. This + * method is similar to `_.bind` except it does **not** alter the `this` binding. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [arg] Arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * var greet = function(greeting, name) { return greeting + ' ' + name; }; + * var hi = _.partial(greet, 'hi'); + * hi('fred'); + * // => 'hi fred' + */ + function partial(func) { + return createWrapper(func, 16, slice(arguments, 1)); + } + + /** + * This method is like `_.partial` except that `partial` arguments are + * appended to those provided to the new function. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [arg] Arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * var defaultsDeep = _.partialRight(_.merge, _.defaults); + * + * var options = { + * 'variable': 'data', + * 'imports': { 'jq': $ } + * }; + * + * defaultsDeep(options, _.templateSettings); + * + * options.variable + * // => 'data' + * + * options.imports + * // => { '_': _, 'jq': $ } + */ + function partialRight(func) { + return createWrapper(func, 32, null, slice(arguments, 1)); + } + + /** + * Creates a function that, when executed, will only call the `func` function + * at most once per every `wait` milliseconds. Provide an options object to + * indicate that `func` should be invoked on the leading and/or trailing edge + * of the `wait` timeout. Subsequent calls to the throttled function will + * return the result of the last `func` call. + * + * Note: If `leading` and `trailing` options are `true` `func` will be called + * on the trailing edge of the timeout only if the the throttled function is + * invoked more than once during the `wait` timeout. + * + * @static + * @memberOf _ + * @category Functions + * @param {Function} func The function to throttle. + * @param {number} wait The number of milliseconds to throttle executions to. + * @param {Object} [options] The options object. + * @param {boolean} [options.leading=true] Specify execution on the leading edge of the timeout. + * @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout. + * @returns {Function} Returns the new throttled function. + * @example + * + * // avoid excessively updating the position while scrolling + * var throttled = _.throttle(updatePosition, 100); + * jQuery(window).on('scroll', throttled); + * + * // execute `renewToken` when the click event is fired, but not more than once every 5 minutes + * jQuery('.interactive').on('click', _.throttle(renewToken, 300000, { + * 'trailing': false + * })); + */ + function throttle(func, wait, options) { + var leading = true, + trailing = true; + + if (!isFunction(func)) { + throw new TypeError; + } + if (options === false) { + leading = false; + } else if (isObject(options)) { + leading = 'leading' in options ? options.leading : leading; + trailing = 'trailing' in options ? options.trailing : trailing; + } + debounceOptions.leading = leading; + debounceOptions.maxWait = wait; + debounceOptions.trailing = trailing; + + return debounce(func, wait, debounceOptions); + } + + /** + * Creates a function that provides `value` to the wrapper function as its + * first argument. Additional arguments provided to the function are appended + * to those provided to the wrapper function. The wrapper is executed with + * the `this` binding of the created function. + * + * @static + * @memberOf _ + * @category Functions + * @param {*} value The value to wrap. + * @param {Function} wrapper The wrapper function. + * @returns {Function} Returns the new function. + * @example + * + * var p = _.wrap(_.escape, function(func, text) { + * return '<p>' + func(text) + '</p>'; + * }); + * + * p('Fred, Wilma, & Pebbles'); + * // => '<p>Fred, Wilma, & Pebbles</p>' + */ + function wrap(value, wrapper) { + return createWrapper(wrapper, 16, [value]); + } + + /*--------------------------------------------------------------------------*/ + + /** + * Creates a function that returns `value`. + * + * @static + * @memberOf _ + * @category Utilities + * @param {*} value The value to return from the new function. + * @returns {Function} Returns the new function. + * @example + * + * var object = { 'name': 'fred' }; + * var getter = _.constant(object); + * getter() === object; + * // => true + */ + function constant(value) { + return function() { + return value; + }; + } + + /** + * Produces a callback bound to an optional `thisArg`. If `func` is a property + * name the created callback will return the property value for a given element. + * If `func` is an object the created callback will return `true` for elements + * that contain the equivalent object properties, otherwise it will return `false`. + * + * @static + * @memberOf _ + * @category Utilities + * @param {*} [func=identity] The value to convert to a callback. + * @param {*} [thisArg] The `this` binding of the created callback. + * @param {number} [argCount] The number of arguments the callback accepts. + * @returns {Function} Returns a callback function. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * // wrap to create custom callback shorthands + * _.createCallback = _.wrap(_.createCallback, function(func, callback, thisArg) { + * var match = /^(.+?)__([gl]t)(.+)$/.exec(callback); + * return !match ? func(callback, thisArg) : function(object) { + * return match[2] == 'gt' ? object[match[1]] > match[3] : object[match[1]] < match[3]; + * }; + * }); + * + * _.filter(characters, 'age__gt38'); + * // => [{ 'name': 'fred', 'age': 40 }] + */ + function createCallback(func, thisArg, argCount) { + var type = typeof func; + if (func == null || type == 'function') { + return baseCreateCallback(func, thisArg, argCount); + } + // handle "_.pluck" style callback shorthands + if (type != 'object') { + return property(func); + } + var props = keys(func), + key = props[0], + a = func[key]; + + // handle "_.where" style callback shorthands + if (props.length == 1 && a === a && !isObject(a)) { + // fast path the common case of providing an object with a single + // property containing a primitive value + return function(object) { + var b = object[key]; + return a === b && (a !== 0 || (1 / a == 1 / b)); + }; + } + return function(object) { + var length = props.length, + result = false; + + while (length--) { + if (!(result = baseIsEqual(object[props[length]], func[props[length]], null, true))) { + break; + } + } + return result; + }; + } + + /** + * Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their + * corresponding HTML entities. + * + * @static + * @memberOf _ + * @category Utilities + * @param {string} string The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escape('Fred, Wilma, & Pebbles'); + * // => 'Fred, Wilma, & Pebbles' + */ + function escape(string) { + return string == null ? '' : String(string).replace(reUnescapedHtml, escapeHtmlChar); + } + + /** + * This method returns the first argument provided to it. + * + * @static + * @memberOf _ + * @category Utilities + * @param {*} value Any value. + * @returns {*} Returns `value`. + * @example + * + * var object = { 'name': 'fred' }; + * _.identity(object) === object; + * // => true + */ + function identity(value) { + return value; + } + + /** + * Adds function properties of a source object to the destination object. + * If `object` is a function methods will be added to its prototype as well. + * + * @static + * @memberOf _ + * @category Utilities + * @param {Function|Object} [object=lodash] object The destination object. + * @param {Object} source The object of functions to add. + * @param {Object} [options] The options object. + * @param {boolean} [options.chain=true] Specify whether the functions added are chainable. + * @example + * + * function capitalize(string) { + * return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase(); + * } + * + * _.mixin({ 'capitalize': capitalize }); + * _.capitalize('fred'); + * // => 'Fred' + * + * _('fred').capitalize().value(); + * // => 'Fred' + * + * _.mixin({ 'capitalize': capitalize }, { 'chain': false }); + * _('fred').capitalize(); + * // => 'Fred' + */ + function mixin(object, source, options) { + var chain = true, + methodNames = source && functions(source); + + if (!source || (!options && !methodNames.length)) { + if (options == null) { + options = source; + } + ctor = lodashWrapper; + source = object; + object = lodash; + methodNames = functions(source); + } + if (options === false) { + chain = false; + } else if (isObject(options) && 'chain' in options) { + chain = options.chain; + } + var ctor = object, + isFunc = isFunction(ctor); + + forEach(methodNames, function(methodName) { + var func = object[methodName] = source[methodName]; + if (isFunc) { + ctor.prototype[methodName] = function() { + var chainAll = this.__chain__, + value = this.__wrapped__, + args = [value]; + + push.apply(args, arguments); + var result = func.apply(object, args); + if (chain || chainAll) { + if (value === result && isObject(result)) { + return this; + } + result = new ctor(result); + result.__chain__ = chainAll; + } + return result; + }; + } + }); + } + + /** + * Reverts the '_' variable to its previous value and returns a reference to + * the `lodash` function. + * + * @static + * @memberOf _ + * @category Utilities + * @returns {Function} Returns the `lodash` function. + * @example + * + * var lodash = _.noConflict(); + */ + function noConflict() { + context._ = oldDash; + return this; + } + + /** + * A no-operation function. + * + * @static + * @memberOf _ + * @category Utilities + * @example + * + * var object = { 'name': 'fred' }; + * _.noop(object) === undefined; + * // => true + */ + function noop() { + // no operation performed + } + + /** + * Gets the number of milliseconds that have elapsed since the Unix epoch + * (1 January 1970 00:00:00 UTC). + * + * @static + * @memberOf _ + * @category Utilities + * @example + * + * var stamp = _.now(); + * _.defer(function() { console.log(_.now() - stamp); }); + * // => logs the number of milliseconds it took for the deferred function to be called + */ + var now = isNative(now = Date.now) && now || function() { + return new Date().getTime(); + }; + + /** + * Converts the given value into an integer of the specified radix. + * If `radix` is `undefined` or `0` a `radix` of `10` is used unless the + * `value` is a hexadecimal, in which case a `radix` of `16` is used. + * + * Note: This method avoids differences in native ES3 and ES5 `parseInt` + * implementations. See http://es5.github.io/#E. + * + * @static + * @memberOf _ + * @category Utilities + * @param {string} value The value to parse. + * @param {number} [radix] The radix used to interpret the value to parse. + * @returns {number} Returns the new integer value. + * @example + * + * _.parseInt('08'); + * // => 8 + */ + var parseInt = nativeParseInt(whitespace + '08') == 8 ? nativeParseInt : function(value, radix) { + // Firefox < 21 and Opera < 15 follow the ES3 specified implementation of `parseInt` + return nativeParseInt(isString(value) ? value.replace(reLeadingSpacesAndZeros, '') : value, radix || 0); + }; + + /** + * Creates a "_.pluck" style function, which returns the `key` value of a + * given object. + * + * @static + * @memberOf _ + * @category Utilities + * @param {string} key The name of the property to retrieve. + * @returns {Function} Returns the new function. + * @example + * + * var characters = [ + * { 'name': 'fred', 'age': 40 }, + * { 'name': 'barney', 'age': 36 } + * ]; + * + * var getName = _.property('name'); + * + * _.map(characters, getName); + * // => ['barney', 'fred'] + * + * _.sortBy(characters, getName); + * // => [{ 'name': 'barney', 'age': 36 }, { 'name': 'fred', 'age': 40 }] + */ + function property(key) { + return function(object) { + return object[key]; + }; + } + + /** + * Produces a random number between `min` and `max` (inclusive). If only one + * argument is provided a number between `0` and the given number will be + * returned. If `floating` is truey or either `min` or `max` are floats a + * floating-point number will be returned instead of an integer. + * + * @static + * @memberOf _ + * @category Utilities + * @param {number} [min=0] The minimum possible value. + * @param {number} [max=1] The maximum possible value. + * @param {boolean} [floating=false] Specify returning a floating-point number. + * @returns {number} Returns a random number. + * @example + * + * _.random(0, 5); + * // => an integer between 0 and 5 + * + * _.random(5); + * // => also an integer between 0 and 5 + * + * _.random(5, true); + * // => a floating-point number between 0 and 5 + * + * _.random(1.2, 5.2); + * // => a floating-point number between 1.2 and 5.2 + */ + function random(min, max, floating) { + var noMin = min == null, + noMax = max == null; + + if (floating == null) { + if (typeof min == 'boolean' && noMax) { + floating = min; + min = 1; + } + else if (!noMax && typeof max == 'boolean') { + floating = max; + noMax = true; + } + } + if (noMin && noMax) { + max = 1; + } + min = +min || 0; + if (noMax) { + max = min; + min = 0; + } else { + max = +max || 0; + } + if (floating || min % 1 || max % 1) { + var rand = nativeRandom(); + return nativeMin(min + (rand * (max - min + parseFloat('1e-' + ((rand +'').length - 1)))), max); + } + return baseRandom(min, max); + } + + /** + * Resolves the value of property `key` on `object`. If `key` is a function + * it will be invoked with the `this` binding of `object` and its result returned, + * else the property value is returned. If `object` is falsey then `undefined` + * is returned. + * + * @static + * @memberOf _ + * @category Utilities + * @param {Object} object The object to inspect. + * @param {string} key The name of the property to resolve. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { + * 'cheese': 'crumpets', + * 'stuff': function() { + * return 'nonsense'; + * } + * }; + * + * _.result(object, 'cheese'); + * // => 'crumpets' + * + * _.result(object, 'stuff'); + * // => 'nonsense' + */ + function result(object, key) { + if (object) { + var value = object[key]; + return isFunction(value) ? object[key]() : value; + } + } + + /** + * A micro-templating method that handles arbitrary delimiters, preserves + * whitespace, and correctly escapes quotes within interpolated code. + * + * Note: In the development build, `_.template` utilizes sourceURLs for easier + * debugging. See http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl + * + * For more information on precompiling templates see: + * http://lodash.com/custom-builds + * + * For more information on Chrome extension sandboxes see: + * http://developer.chrome.com/stable/extensions/sandboxingEval.html + * + * @static + * @memberOf _ + * @category Utilities + * @param {string} text The template text. + * @param {Object} data The data object used to populate the text. + * @param {Object} [options] The options object. + * @param {RegExp} [options.escape] The "escape" delimiter. + * @param {RegExp} [options.evaluate] The "evaluate" delimiter. + * @param {Object} [options.imports] An object to import into the template as local variables. + * @param {RegExp} [options.interpolate] The "interpolate" delimiter. + * @param {string} [sourceURL] The sourceURL of the template's compiled source. + * @param {string} [variable] The data object variable name. + * @returns {Function|string} Returns a compiled function when no `data` object + * is given, else it returns the interpolated text. + * @example + * + * // using the "interpolate" delimiter to create a compiled template + * var compiled = _.template('hello <%= name %>'); + * compiled({ 'name': 'fred' }); + * // => 'hello fred' + * + * // using the "escape" delimiter to escape HTML in data property values + * _.template('<b><%- value %></b>', { 'value': '<script>' }); + * // => '<b><script></b>' + * + * // using the "evaluate" delimiter to generate HTML + * var list = '<% _.forEach(people, function(name) { %><li><%- name %></li><% }); %>'; + * _.template(list, { 'people': ['fred', 'barney'] }); + * // => '<li>fred</li><li>barney</li>' + * + * // using the ES6 delimiter as an alternative to the default "interpolate" delimiter + * _.template('hello ${ name }', { 'name': 'pebbles' }); + * // => 'hello pebbles' + * + * // using the internal `print` function in "evaluate" delimiters + * _.template('<% print("hello " + name); %>!', { 'name': 'barney' }); + * // => 'hello barney!' + * + * // using a custom template delimiters + * _.templateSettings = { + * 'interpolate': /{{([\s\S]+?)}}/g + * }; + * + * _.template('hello {{ name }}!', { 'name': 'mustache' }); + * // => 'hello mustache!' + * + * // using the `imports` option to import jQuery + * var list = '<% jq.each(people, function(name) { %><li><%- name %></li><% }); %>'; + * _.template(list, { 'people': ['fred', 'barney'] }, { 'imports': { 'jq': jQuery } }); + * // => '<li>fred</li><li>barney</li>' + * + * // using the `sourceURL` option to specify a custom sourceURL for the template + * var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' }); + * compiled(data); + * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector + * + * // using the `variable` option to ensure a with-statement isn't used in the compiled template + * var compiled = _.template('hi <%= data.name %>!', null, { 'variable': 'data' }); + * compiled.source; + * // => function(data) { + * var __t, __p = '', __e = _.escape; + * __p += 'hi ' + ((__t = ( data.name )) == null ? '' : __t) + '!'; + * return __p; + * } + * + * // using the `source` property to inline compiled templates for meaningful + * // line numbers in error messages and a stack trace + * fs.writeFileSync(path.join(cwd, 'jst.js'), '\ + * var JST = {\ + * "main": ' + _.template(mainText).source + '\ + * };\ + * '); + */ + function template(text, data, options) { + // based on John Resig's `tmpl` implementation + // http://ejohn.org/blog/javascript-micro-templating/ + // and Laura Doktorova's doT.js + // https://github.com/olado/doT + var settings = lodash.templateSettings; + text = String(text || ''); + + // avoid missing dependencies when `iteratorTemplate` is not defined + options = defaults({}, options, settings); + + var imports = defaults({}, options.imports, settings.imports), + importsKeys = keys(imports), + importsValues = values(imports); + + var isEvaluating, + index = 0, + interpolate = options.interpolate || reNoMatch, + source = "__p += '"; + + // compile the regexp to match each delimiter + var reDelimiters = RegExp( + (options.escape || reNoMatch).source + '|' + + interpolate.source + '|' + + (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + + (options.evaluate || reNoMatch).source + '|$' + , 'g'); + + text.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) { + interpolateValue || (interpolateValue = esTemplateValue); + + // escape characters that cannot be included in string literals + source += text.slice(index, offset).replace(reUnescapedString, escapeStringChar); + + // replace delimiters with snippets + if (escapeValue) { + source += "' +\n__e(" + escapeValue + ") +\n'"; + } + if (evaluateValue) { + isEvaluating = true; + source += "';\n" + evaluateValue + ";\n__p += '"; + } + if (interpolateValue) { + source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'"; + } + index = offset + match.length; + + // the JS engine embedded in Adobe products requires returning the `match` + // string in order to produce the correct `offset` value + return match; + }); + + source += "';\n"; + + // if `variable` is not specified, wrap a with-statement around the generated + // code to add the data object to the top of the scope chain + var variable = options.variable, + hasVariable = variable; + + if (!hasVariable) { + variable = 'obj'; + source = 'with (' + variable + ') {\n' + source + '\n}\n'; + } + // cleanup code by stripping empty strings + source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source) + .replace(reEmptyStringMiddle, '$1') + .replace(reEmptyStringTrailing, '$1;'); + + // frame code as the function body + source = 'function(' + variable + ') {\n' + + (hasVariable ? '' : variable + ' || (' + variable + ' = {});\n') + + "var __t, __p = '', __e = _.escape" + + (isEvaluating + ? ', __j = Array.prototype.join;\n' + + "function print() { __p += __j.call(arguments, '') }\n" + : ';\n' + ) + + source + + 'return __p\n}'; + + // Use a sourceURL for easier debugging. + // http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl + var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/'; + + try { + var result = Function(importsKeys, 'return ' + source + sourceURL).apply(undefined, importsValues); + } catch(e) { + e.source = source; + throw e; + } + if (data) { + return result(data); + } + // provide the compiled function's source by its `toString` method, in + // supported environments, or the `source` property as a convenience for + // inlining compiled templates during the build process + result.source = source; + return result; + } + + /** + * Executes the callback `n` times, returning an array of the results + * of each callback execution. The callback is bound to `thisArg` and invoked + * with one argument; (index). + * + * @static + * @memberOf _ + * @category Utilities + * @param {number} n The number of times to execute the callback. + * @param {Function} callback The function called per iteration. + * @param {*} [thisArg] The `this` binding of `callback`. + * @returns {Array} Returns an array of the results of each `callback` execution. + * @example + * + * var diceRolls = _.times(3, _.partial(_.random, 1, 6)); + * // => [3, 6, 4] + * + * _.times(3, function(n) { mage.castSpell(n); }); + * // => calls `mage.castSpell(n)` three times, passing `n` of `0`, `1`, and `2` respectively + * + * _.times(3, function(n) { this.cast(n); }, mage); + * // => also calls `mage.castSpell(n)` three times + */ + function times(n, callback, thisArg) { + n = (n = +n) > -1 ? n : 0; + var index = -1, + result = Array(n); + + callback = baseCreateCallback(callback, thisArg, 1); + while (++index < n) { + result[index] = callback(index); + } + return result; + } + + /** + * The inverse of `_.escape` this method converts the HTML entities + * `&`, `<`, `>`, `"`, and `'` in `string` to their + * corresponding characters. + * + * @static + * @memberOf _ + * @category Utilities + * @param {string} string The string to unescape. + * @returns {string} Returns the unescaped string. + * @example + * + * _.unescape('Fred, Barney & Pebbles'); + * // => 'Fred, Barney & Pebbles' + */ + function unescape(string) { + return string == null ? '' : String(string).replace(reEscapedHtml, unescapeHtmlChar); + } + + /** + * Generates a unique ID. If `prefix` is provided the ID will be appended to it. + * + * @static + * @memberOf _ + * @category Utilities + * @param {string} [prefix] The value to prefix the ID with. + * @returns {string} Returns the unique ID. + * @example + * + * _.uniqueId('contact_'); + * // => 'contact_104' + * + * _.uniqueId(); + * // => '105' + */ + function uniqueId(prefix) { + var id = ++idCounter; + return String(prefix == null ? '' : prefix) + id; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` object that wraps the given value with explicit + * method chaining enabled. + * + * @static + * @memberOf _ + * @category Chaining + * @param {*} value The value to wrap. + * @returns {Object} Returns the wrapper object. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 }, + * { 'name': 'pebbles', 'age': 1 } + * ]; + * + * var youngest = _.chain(characters) + * .sortBy('age') + * .map(function(chr) { return chr.name + ' is ' + chr.age; }) + * .first() + * .value(); + * // => 'pebbles is 1' + */ + function chain(value) { + value = new lodashWrapper(value); + value.__chain__ = true; + return value; + } + + /** + * Invokes `interceptor` with the `value` as the first argument and then + * returns `value`. The purpose of this method is to "tap into" a method + * chain in order to perform operations on intermediate results within + * the chain. + * + * @static + * @memberOf _ + * @category Chaining + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns `value`. + * @example + * + * _([1, 2, 3, 4]) + * .tap(function(array) { array.pop(); }) + * .reverse() + * .value(); + * // => [3, 2, 1] + */ + function tap(value, interceptor) { + interceptor(value); + return value; + } + + /** + * Enables explicit method chaining on the wrapper object. + * + * @name chain + * @memberOf _ + * @category Chaining + * @returns {*} Returns the wrapper object. + * @example + * + * var characters = [ + * { 'name': 'barney', 'age': 36 }, + * { 'name': 'fred', 'age': 40 } + * ]; + * + * // without explicit chaining + * _(characters).first(); + * // => { 'name': 'barney', 'age': 36 } + * + * // with explicit chaining + * _(characters).chain() + * .first() + * .pick('age') + * .value(); + * // => { 'age': 36 } + */ + function wrapperChain() { + this.__chain__ = true; + return this; + } + + /** + * Produces the `toString` result of the wrapped value. + * + * @name toString + * @memberOf _ + * @category Chaining + * @returns {string} Returns the string result. + * @example + * + * _([1, 2, 3]).toString(); + * // => '1,2,3' + */ + function wrapperToString() { + return String(this.__wrapped__); + } + + /** + * Extracts the wrapped value. + * + * @name valueOf + * @memberOf _ + * @alias value + * @category Chaining + * @returns {*} Returns the wrapped value. + * @example + * + * _([1, 2, 3]).valueOf(); + * // => [1, 2, 3] + */ + function wrapperValueOf() { + return this.__wrapped__; + } + + /*--------------------------------------------------------------------------*/ + + // add functions that return wrapped values when chaining + lodash.after = after; + lodash.assign = assign; + lodash.at = at; + lodash.bind = bind; + lodash.bindAll = bindAll; + lodash.bindKey = bindKey; + lodash.chain = chain; + lodash.compact = compact; + lodash.compose = compose; + lodash.constant = constant; + lodash.countBy = countBy; + lodash.create = create; + lodash.createCallback = createCallback; + lodash.curry = curry; + lodash.debounce = debounce; + lodash.defaults = defaults; + lodash.defer = defer; + lodash.delay = delay; + lodash.difference = difference; + lodash.filter = filter; + lodash.flatten = flatten; + lodash.forEach = forEach; + lodash.forEachRight = forEachRight; + lodash.forIn = forIn; + lodash.forInRight = forInRight; + lodash.forOwn = forOwn; + lodash.forOwnRight = forOwnRight; + lodash.functions = functions; + lodash.groupBy = groupBy; + lodash.indexBy = indexBy; + lodash.initial = initial; + lodash.intersection = intersection; + lodash.invert = invert; + lodash.invoke = invoke; + lodash.keys = keys; + lodash.map = map; + lodash.mapValues = mapValues; + lodash.max = max; + lodash.memoize = memoize; + lodash.merge = merge; + lodash.min = min; + lodash.omit = omit; + lodash.once = once; + lodash.pairs = pairs; + lodash.partial = partial; + lodash.partialRight = partialRight; + lodash.pick = pick; + lodash.pluck = pluck; + lodash.property = property; + lodash.pull = pull; + lodash.range = range; + lodash.reject = reject; + lodash.remove = remove; + lodash.rest = rest; + lodash.shuffle = shuffle; + lodash.sortBy = sortBy; + lodash.tap = tap; + lodash.throttle = throttle; + lodash.times = times; + lodash.toArray = toArray; + lodash.transform = transform; + lodash.union = union; + lodash.uniq = uniq; + lodash.values = values; + lodash.where = where; + lodash.without = without; + lodash.wrap = wrap; + lodash.xor = xor; + lodash.zip = zip; + lodash.zipObject = zipObject; + + // add aliases + lodash.collect = map; + lodash.drop = rest; + lodash.each = forEach; + lodash.eachRight = forEachRight; + lodash.extend = assign; + lodash.methods = functions; + lodash.object = zipObject; + lodash.select = filter; + lodash.tail = rest; + lodash.unique = uniq; + lodash.unzip = zip; + + // add functions to `lodash.prototype` + mixin(lodash); + + /*--------------------------------------------------------------------------*/ + + // add functions that return unwrapped values when chaining + lodash.clone = clone; + lodash.cloneDeep = cloneDeep; + lodash.contains = contains; + lodash.escape = escape; + lodash.every = every; + lodash.find = find; + lodash.findIndex = findIndex; + lodash.findKey = findKey; + lodash.findLast = findLast; + lodash.findLastIndex = findLastIndex; + lodash.findLastKey = findLastKey; + lodash.has = has; + lodash.identity = identity; + lodash.indexOf = indexOf; + lodash.isArguments = isArguments; + lodash.isArray = isArray; + lodash.isBoolean = isBoolean; + lodash.isDate = isDate; + lodash.isElement = isElement; + lodash.isEmpty = isEmpty; + lodash.isEqual = isEqual; + lodash.isFinite = isFinite; + lodash.isFunction = isFunction; + lodash.isNaN = isNaN; + lodash.isNull = isNull; + lodash.isNumber = isNumber; + lodash.isObject = isObject; + lodash.isPlainObject = isPlainObject; + lodash.isRegExp = isRegExp; + lodash.isString = isString; + lodash.isUndefined = isUndefined; + lodash.lastIndexOf = lastIndexOf; + lodash.mixin = mixin; + lodash.noConflict = noConflict; + lodash.noop = noop; + lodash.now = now; + lodash.parseInt = parseInt; + lodash.random = random; + lodash.reduce = reduce; + lodash.reduceRight = reduceRight; + lodash.result = result; + lodash.runInContext = runInContext; + lodash.size = size; + lodash.some = some; + lodash.sortedIndex = sortedIndex; + lodash.template = template; + lodash.unescape = unescape; + lodash.uniqueId = uniqueId; + + // add aliases + lodash.all = every; + lodash.any = some; + lodash.detect = find; + lodash.findWhere = find; + lodash.foldl = reduce; + lodash.foldr = reduceRight; + lodash.include = contains; + lodash.inject = reduce; + + mixin(function() { + var source = {} + forOwn(lodash, function(func, methodName) { + if (!lodash.prototype[methodName]) { + source[methodName] = func; + } + }); + return source; + }(), false); + + /*--------------------------------------------------------------------------*/ + + // add functions capable of returning wrapped and unwrapped values when chaining + lodash.first = first; + lodash.last = last; + lodash.sample = sample; + + // add aliases + lodash.take = first; + lodash.head = first; + + forOwn(lodash, function(func, methodName) { + var callbackable = methodName !== 'sample'; + if (!lodash.prototype[methodName]) { + lodash.prototype[methodName]= function(n, guard) { + var chainAll = this.__chain__, + result = func(this.__wrapped__, n, guard); + + return !chainAll && (n == null || (guard && !(callbackable && typeof n == 'function'))) + ? result + : new lodashWrapper(result, chainAll); + }; + } + }); + + /*--------------------------------------------------------------------------*/ + + /** + * The semantic version number. + * + * @static + * @memberOf _ + * @type string + */ + lodash.VERSION = '2.4.1'; + + // add "Chaining" functions to the wrapper + lodash.prototype.chain = wrapperChain; + lodash.prototype.toString = wrapperToString; + lodash.prototype.value = wrapperValueOf; + lodash.prototype.valueOf = wrapperValueOf; + + // add `Array` functions that return unwrapped values + forEach(['join', 'pop', 'shift'], function(methodName) { + var func = arrayRef[methodName]; + lodash.prototype[methodName] = function() { + var chainAll = this.__chain__, + result = func.apply(this.__wrapped__, arguments); + + return chainAll + ? new lodashWrapper(result, chainAll) + : result; + }; + }); + + // add `Array` functions that return the existing wrapped value + forEach(['push', 'reverse', 'sort', 'unshift'], function(methodName) { + var func = arrayRef[methodName]; + lodash.prototype[methodName] = function() { + func.apply(this.__wrapped__, arguments); + return this; + }; + }); + + // add `Array` functions that return new wrapped values + forEach(['concat', 'slice', 'splice'], function(methodName) { + var func = arrayRef[methodName]; + lodash.prototype[methodName] = function() { + return new lodashWrapper(func.apply(this.__wrapped__, arguments), this.__chain__); + }; + }); + + return lodash; + } + + /*--------------------------------------------------------------------------*/ + + // expose Lo-Dash + var _ = runInContext(); + + // some AMD build optimizers like r.js check for condition patterns like the following: + if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) { + // Expose Lo-Dash to the global object even when an AMD loader is present in + // case Lo-Dash is loaded with a RequireJS shim config. + // See http://requirejs.org/docs/api.html#config-shim + root._ = _; + + // define as an anonymous module so, through path mapping, it can be + // referenced as the "underscore" module + define('lodash',[],function() { + return _; + }); + } + // check for `exports` after `define` in case a build optimizer adds an `exports` object + else if (freeExports && freeModule) { + // in Node.js or RingoJS + if (moduleExports) { + (freeModule.exports = _)._ = _; + } + // in Narwhal or Rhino -require + else { + freeExports._ = _; + } + } + else { + // in a browser or Rhino + root._ = _; + } +}.call(this)); + +(function(e,b){if(!b.__SV){var a,f,i,g;window.mixpanel=b;b._i=[];b.init=function(a,e,d){function f(b,h){var a=h.split(".");2==a.length&&(b=b[a[0]],h=a[1]);b[h]=function(){b.push([h].concat(Array.prototype.slice.call(arguments,0)))}}var c=b;"undefined"!==typeof d?c=b[d]=[]:d="mixpanel";c.people=c.people||[];c.toString=function(b){var a="mixpanel";"mixpanel"!==d&&(a+="."+d);b||(a+=" (stub)");return a};c.people.toString=function(){return c.toString(1)+".people (stub)"};i="disable track track_pageview track_links track_forms register register_once alias unregister identify name_tag set_config people.set people.set_once people.increment people.append people.track_charge people.clear_charges people.delete_user".split(" "); +for(g=0;g<i.length;g++)f(c,i[g]);b._i.push([a,e,d])};b.__SV=1.2;a=e.createElement("script");a.type="text/javascript";a.async=!0;a.src=("https:"===e.location.protocol?"https:":"http:")+'//cdn.mxpnl.com/libs/mixpanel-2.2.min.js';f=e.getElementsByTagName("script")[0];f.parentNode.insertBefore(a,f)}})(document,window.mixpanel||[]); +define("mixpanel", (function (global) { + return function () { + var ret, fn; + return ret || global.mixpanel; + }; +}(this))); + +define('utils/analytic',[ + "lodash", + "mixpanel" +], function(_, mixpanel) { + mixpanel.init("01eb2b950ae09a5fdb15a98dcc5ff20e", { + loaded: function() { + track("View"); + } + }); + + var isAvailable = function() { + return ( + typeof mixpanel !== "undefined" && + typeof mixpanel.track === "function" + ); + }; + + var track = function(e, data) { + if (!isAvailable()) { + console.warn("tracking not available!"); + return; + } + console.log("track", e); + mixpanel.track(e, _.extend(data || {}, { + 'domain': window.location.host + })); + }; + + return { + isAvailable: isAvailable, + track: track + }; +}); +define('utils/sharing',[ + "jQuery" +], function($) { + var url = location.href; + var title = $("title").text(); + + var types = { + "twitter": function($el) { + window.open("http://twitter.com/home?status="+encodeURIComponent(title+" "+url)) + }, + "facebook": function($el) { + window.open("http://www.facebook.com/sharer/sharer.php?s=100&p[url]="+encodeURIComponent(url)) + }, + "google-plus": function($el) { + window.open("https://plus.google.com/share?url="+encodeURIComponent(url)) + } + }; + + + // Bind all sharing button + var init = function() { + $("a[data-sharing]").click(function(e) { + if (e) e.preventDefault(); + var type = $(this).data("sharing"); + + types[type]($(this)); + }) + }; + + return { + init: init + }; +}); +define('core/state',[ + "jQuery" +], function() { + var $book = $(".book"); + + return { + '$book': $book, + + 'githubId': $book.data("github"), + 'level': $book.data("level") + }; +}); +/*global define:false */ +/** + * Copyright 2013 Craig Campbell + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * Mousetrap is a simple keyboard shortcut library for Javascript with + * no external dependencies + * + * @version 1.4.6 + * @url craig.is/killing/mice + */ +(function(window, document, undefined) { + + /** + * mapping of special keycodes to their corresponding keys + * + * everything in this dictionary cannot use keypress events + * so it has to be here to map to the correct keycodes for + * keyup/keydown events + * + * @type {Object} + */ + var _MAP = { + 8: 'backspace', + 9: 'tab', + 13: 'enter', + 16: 'shift', + 17: 'ctrl', + 18: 'alt', + 20: 'capslock', + 27: 'esc', + 32: 'space', + 33: 'pageup', + 34: 'pagedown', + 35: 'end', + 36: 'home', + 37: 'left', + 38: 'up', + 39: 'right', + 40: 'down', + 45: 'ins', + 46: 'del', + 91: 'meta', + 93: 'meta', + 224: 'meta' + }, + + /** + * mapping for special characters so they can support + * + * this dictionary is only used incase you want to bind a + * keyup or keydown event to one of these keys + * + * @type {Object} + */ + _KEYCODE_MAP = { + 106: '*', + 107: '+', + 109: '-', + 110: '.', + 111 : '/', + 186: ';', + 187: '=', + 188: ',', + 189: '-', + 190: '.', + 191: '/', + 192: '`', + 219: '[', + 220: '\\', + 221: ']', + 222: '\'' + }, + + /** + * this is a mapping of keys that require shift on a US keypad + * back to the non shift equivelents + * + * this is so you can use keyup events with these keys + * + * note that this will only work reliably on US keyboards + * + * @type {Object} + */ + _SHIFT_MAP = { + '~': '`', + '!': '1', + '@': '2', + '#': '3', + '$': '4', + '%': '5', + '^': '6', + '&': '7', + '*': '8', + '(': '9', + ')': '0', + '_': '-', + '+': '=', + ':': ';', + '\"': '\'', + '<': ',', + '>': '.', + '?': '/', + '|': '\\' + }, + + /** + * this is a list of special strings you can use to map + * to modifier keys when you specify your keyboard shortcuts + * + * @type {Object} + */ + _SPECIAL_ALIASES = { + 'option': 'alt', + 'command': 'meta', + 'return': 'enter', + 'escape': 'esc', + 'mod': /Mac|iPod|iPhone|iPad/.test(navigator.platform) ? 'meta' : 'ctrl' + }, + + /** + * variable to store the flipped version of _MAP from above + * needed to check if we should use keypress or not when no action + * is specified + * + * @type {Object|undefined} + */ + _REVERSE_MAP, + + /** + * a list of all the callbacks setup via Mousetrap.bind() + * + * @type {Object} + */ + _callbacks = {}, + + /** + * direct map of string combinations to callbacks used for trigger() + * + * @type {Object} + */ + _directMap = {}, + + /** + * keeps track of what level each sequence is at since multiple + * sequences can start out with the same sequence + * + * @type {Object} + */ + _sequenceLevels = {}, + + /** + * variable to store the setTimeout call + * + * @type {null|number} + */ + _resetTimer, + + /** + * temporary state where we will ignore the next keyup + * + * @type {boolean|string} + */ + _ignoreNextKeyup = false, + + /** + * temporary state where we will ignore the next keypress + * + * @type {boolean} + */ + _ignoreNextKeypress = false, + + /** + * are we currently inside of a sequence? + * type of action ("keyup" or "keydown" or "keypress") or false + * + * @type {boolean|string} + */ + _nextExpectedAction = false; + + /** + * loop through the f keys, f1 to f19 and add them to the map + * programatically + */ + for (var i = 1; i < 20; ++i) { + _MAP[111 + i] = 'f' + i; + } + + /** + * loop through to map numbers on the numeric keypad + */ + for (i = 0; i <= 9; ++i) { + _MAP[i + 96] = i; + } + + /** + * cross browser add event method + * + * @param {Element|HTMLDocument} object + * @param {string} type + * @param {Function} callback + * @returns void + */ + function _addEvent(object, type, callback) { + if (object.addEventListener) { + object.addEventListener(type, callback, false); + return; + } + + object.attachEvent('on' + type, callback); + } + + /** + * takes the event and returns the key character + * + * @param {Event} e + * @return {string} + */ + function _characterFromEvent(e) { + + // for keypress events we should return the character as is + if (e.type == 'keypress') { + var character = String.fromCharCode(e.which); + + // if the shift key is not pressed then it is safe to assume + // that we want the character to be lowercase. this means if + // you accidentally have caps lock on then your key bindings + // will continue to work + // + // the only side effect that might not be desired is if you + // bind something like 'A' cause you want to trigger an + // event when capital A is pressed caps lock will no longer + // trigger the event. shift+a will though. + if (!e.shiftKey) { + character = character.toLowerCase(); + } + + return character; + } + + // for non keypress events the special maps are needed + if (_MAP[e.which]) { + return _MAP[e.which]; + } + + if (_KEYCODE_MAP[e.which]) { + return _KEYCODE_MAP[e.which]; + } + + // if it is not in the special map + + // with keydown and keyup events the character seems to always + // come in as an uppercase character whether you are pressing shift + // or not. we should make sure it is always lowercase for comparisons + return String.fromCharCode(e.which).toLowerCase(); + } + + /** + * checks if two arrays are equal + * + * @param {Array} modifiers1 + * @param {Array} modifiers2 + * @returns {boolean} + */ + function _modifiersMatch(modifiers1, modifiers2) { + return modifiers1.sort().join(',') === modifiers2.sort().join(','); + } + + /** + * resets all sequence counters except for the ones passed in + * + * @param {Object} doNotReset + * @returns void + */ + function _resetSequences(doNotReset) { + doNotReset = doNotReset || {}; + + var activeSequences = false, + key; + + for (key in _sequenceLevels) { + if (doNotReset[key]) { + activeSequences = true; + continue; + } + _sequenceLevels[key] = 0; + } + + if (!activeSequences) { + _nextExpectedAction = false; + } + } + + /** + * finds all callbacks that match based on the keycode, modifiers, + * and action + * + * @param {string} character + * @param {Array} modifiers + * @param {Event|Object} e + * @param {string=} sequenceName - name of the sequence we are looking for + * @param {string=} combination + * @param {number=} level + * @returns {Array} + */ + function _getMatches(character, modifiers, e, sequenceName, combination, level) { + var i, + callback, + matches = [], + action = e.type; + + // if there are no events related to this keycode + if (!_callbacks[character]) { + return []; + } + + // if a modifier key is coming up on its own we should allow it + if (action == 'keyup' && _isModifier(character)) { + modifiers = [character]; + } + + // loop through all callbacks for the key that was pressed + // and see if any of them match + for (i = 0; i < _callbacks[character].length; ++i) { + callback = _callbacks[character][i]; + + // if a sequence name is not specified, but this is a sequence at + // the wrong level then move onto the next match + if (!sequenceName && callback.seq && _sequenceLevels[callback.seq] != callback.level) { + continue; + } + + // if the action we are looking for doesn't match the action we got + // then we should keep going + if (action != callback.action) { + continue; + } + + // if this is a keypress event and the meta key and control key + // are not pressed that means that we need to only look at the + // character, otherwise check the modifiers as well + // + // chrome will not fire a keypress if meta or control is down + // safari will fire a keypress if meta or meta+shift is down + // firefox will fire a keypress if meta or control is down + if ((action == 'keypress' && !e.metaKey && !e.ctrlKey) || _modifiersMatch(modifiers, callback.modifiers)) { + + // when you bind a combination or sequence a second time it + // should overwrite the first one. if a sequenceName or + // combination is specified in this call it does just that + // + // @todo make deleting its own method? + var deleteCombo = !sequenceName && callback.combo == combination; + var deleteSequence = sequenceName && callback.seq == sequenceName && callback.level == level; + if (deleteCombo || deleteSequence) { + _callbacks[character].splice(i, 1); + } + + matches.push(callback); + } + } + + return matches; + } + + /** + * takes a key event and figures out what the modifiers are + * + * @param {Event} e + * @returns {Array} + */ + function _eventModifiers(e) { + var modifiers = []; + + if (e.shiftKey) { + modifiers.push('shift'); + } + + if (e.altKey) { + modifiers.push('alt'); + } + + if (e.ctrlKey) { + modifiers.push('ctrl'); + } + + if (e.metaKey) { + modifiers.push('meta'); + } + + return modifiers; + } + + /** + * prevents default for this event + * + * @param {Event} e + * @returns void + */ + function _preventDefault(e) { + if (e.preventDefault) { + e.preventDefault(); + return; + } + + e.returnValue = false; + } + + /** + * stops propogation for this event + * + * @param {Event} e + * @returns void + */ + function _stopPropagation(e) { + if (e.stopPropagation) { + e.stopPropagation(); + return; + } + + e.cancelBubble = true; + } + + /** + * actually calls the callback function + * + * if your callback function returns false this will use the jquery + * convention - prevent default and stop propogation on the event + * + * @param {Function} callback + * @param {Event} e + * @returns void + */ + function _fireCallback(callback, e, combo, sequence) { + + // if this event should not happen stop here + if (Mousetrap.stopCallback(e, e.target || e.srcElement, combo, sequence)) { + return; + } + + if (callback(e, combo) === false) { + _preventDefault(e); + _stopPropagation(e); + } + } + + /** + * handles a character key event + * + * @param {string} character + * @param {Array} modifiers + * @param {Event} e + * @returns void + */ + function _handleKey(character, modifiers, e) { + var callbacks = _getMatches(character, modifiers, e), + i, + doNotReset = {}, + maxLevel = 0, + processedSequenceCallback = false; + + // Calculate the maxLevel for sequences so we can only execute the longest callback sequence + for (i = 0; i < callbacks.length; ++i) { + if (callbacks[i].seq) { + maxLevel = Math.max(maxLevel, callbacks[i].level); + } + } + + // loop through matching callbacks for this key event + for (i = 0; i < callbacks.length; ++i) { + + // fire for all sequence callbacks + // this is because if for example you have multiple sequences + // bound such as "g i" and "g t" they both need to fire the + // callback for matching g cause otherwise you can only ever + // match the first one + if (callbacks[i].seq) { + + // only fire callbacks for the maxLevel to prevent + // subsequences from also firing + // + // for example 'a option b' should not cause 'option b' to fire + // even though 'option b' is part of the other sequence + // + // any sequences that do not match here will be discarded + // below by the _resetSequences call + if (callbacks[i].level != maxLevel) { + continue; + } + + processedSequenceCallback = true; + + // keep a list of which sequences were matches for later + doNotReset[callbacks[i].seq] = 1; + _fireCallback(callbacks[i].callback, e, callbacks[i].combo, callbacks[i].seq); + continue; + } + + // if there were no sequence matches but we are still here + // that means this is a regular match so we should fire that + if (!processedSequenceCallback) { + _fireCallback(callbacks[i].callback, e, callbacks[i].combo); + } + } + + // if the key you pressed matches the type of sequence without + // being a modifier (ie "keyup" or "keypress") then we should + // reset all sequences that were not matched by this event + // + // this is so, for example, if you have the sequence "h a t" and you + // type "h e a r t" it does not match. in this case the "e" will + // cause the sequence to reset + // + // modifier keys are ignored because you can have a sequence + // that contains modifiers such as "enter ctrl+space" and in most + // cases the modifier key will be pressed before the next key + // + // also if you have a sequence such as "ctrl+b a" then pressing the + // "b" key will trigger a "keypress" and a "keydown" + // + // the "keydown" is expected when there is a modifier, but the + // "keypress" ends up matching the _nextExpectedAction since it occurs + // after and that causes the sequence to reset + // + // we ignore keypresses in a sequence that directly follow a keydown + // for the same character + var ignoreThisKeypress = e.type == 'keypress' && _ignoreNextKeypress; + if (e.type == _nextExpectedAction && !_isModifier(character) && !ignoreThisKeypress) { + _resetSequences(doNotReset); + } + + _ignoreNextKeypress = processedSequenceCallback && e.type == 'keydown'; + } + + /** + * handles a keydown event + * + * @param {Event} e + * @returns void + */ + function _handleKeyEvent(e) { + + // normalize e.which for key events + // @see http://stackoverflow.com/questions/4285627/javascript-keycode-vs-charcode-utter-confusion + if (typeof e.which !== 'number') { + e.which = e.keyCode; + } + + var character = _characterFromEvent(e); + + // no character found then stop + if (!character) { + return; + } + + // need to use === for the character check because the character can be 0 + if (e.type == 'keyup' && _ignoreNextKeyup === character) { + _ignoreNextKeyup = false; + return; + } + + Mousetrap.handleKey(character, _eventModifiers(e), e); + } + + /** + * determines if the keycode specified is a modifier key or not + * + * @param {string} key + * @returns {boolean} + */ + function _isModifier(key) { + return key == 'shift' || key == 'ctrl' || key == 'alt' || key == 'meta'; + } + + /** + * called to set a 1 second timeout on the specified sequence + * + * this is so after each key press in the sequence you have 1 second + * to press the next key before you have to start over + * + * @returns void + */ + function _resetSequenceTimer() { + clearTimeout(_resetTimer); + _resetTimer = setTimeout(_resetSequences, 1000); + } + + /** + * reverses the map lookup so that we can look for specific keys + * to see what can and can't use keypress + * + * @return {Object} + */ + function _getReverseMap() { + if (!_REVERSE_MAP) { + _REVERSE_MAP = {}; + for (var key in _MAP) { + + // pull out the numeric keypad from here cause keypress should + // be able to detect the keys from the character + if (key > 95 && key < 112) { + continue; + } + + if (_MAP.hasOwnProperty(key)) { + _REVERSE_MAP[_MAP[key]] = key; + } + } + } + return _REVERSE_MAP; + } + + /** + * picks the best action based on the key combination + * + * @param {string} key - character for key + * @param {Array} modifiers + * @param {string=} action passed in + */ + function _pickBestAction(key, modifiers, action) { + + // if no action was picked in we should try to pick the one + // that we think would work best for this key + if (!action) { + action = _getReverseMap()[key] ? 'keydown' : 'keypress'; + } + + // modifier keys don't work as expected with keypress, + // switch to keydown + if (action == 'keypress' && modifiers.length) { + action = 'keydown'; + } + + return action; + } + + /** + * binds a key sequence to an event + * + * @param {string} combo - combo specified in bind call + * @param {Array} keys + * @param {Function} callback + * @param {string=} action + * @returns void + */ + function _bindSequence(combo, keys, callback, action) { + + // start off by adding a sequence level record for this combination + // and setting the level to 0 + _sequenceLevels[combo] = 0; + + /** + * callback to increase the sequence level for this sequence and reset + * all other sequences that were active + * + * @param {string} nextAction + * @returns {Function} + */ + function _increaseSequence(nextAction) { + return function() { + _nextExpectedAction = nextAction; + ++_sequenceLevels[combo]; + _resetSequenceTimer(); + }; + } + + /** + * wraps the specified callback inside of another function in order + * to reset all sequence counters as soon as this sequence is done + * + * @param {Event} e + * @returns void + */ + function _callbackAndReset(e) { + _fireCallback(callback, e, combo); + + // we should ignore the next key up if the action is key down + // or keypress. this is so if you finish a sequence and + // release the key the final key will not trigger a keyup + if (action !== 'keyup') { + _ignoreNextKeyup = _characterFromEvent(e); + } + + // weird race condition if a sequence ends with the key + // another sequence begins with + setTimeout(_resetSequences, 10); + } + + // loop through keys one at a time and bind the appropriate callback + // function. for any key leading up to the final one it should + // increase the sequence. after the final, it should reset all sequences + // + // if an action is specified in the original bind call then that will + // be used throughout. otherwise we will pass the action that the + // next key in the sequence should match. this allows a sequence + // to mix and match keypress and keydown events depending on which + // ones are better suited to the key provided + for (var i = 0; i < keys.length; ++i) { + var isFinal = i + 1 === keys.length; + var wrappedCallback = isFinal ? _callbackAndReset : _increaseSequence(action || _getKeyInfo(keys[i + 1]).action); + _bindSingle(keys[i], wrappedCallback, action, combo, i); + } + } + + /** + * Converts from a string key combination to an array + * + * @param {string} combination like "command+shift+l" + * @return {Array} + */ + function _keysFromString(combination) { + if (combination === '+') { + return ['+']; + } + + return combination.split('+'); + } + + /** + * Gets info for a specific key combination + * + * @param {string} combination key combination ("command+s" or "a" or "*") + * @param {string=} action + * @returns {Object} + */ + function _getKeyInfo(combination, action) { + var keys, + key, + i, + modifiers = []; + + // take the keys from this pattern and figure out what the actual + // pattern is all about + keys = _keysFromString(combination); + + for (i = 0; i < keys.length; ++i) { + key = keys[i]; + + // normalize key names + if (_SPECIAL_ALIASES[key]) { + key = _SPECIAL_ALIASES[key]; + } + + // if this is not a keypress event then we should + // be smart about using shift keys + // this will only work for US keyboards however + if (action && action != 'keypress' && _SHIFT_MAP[key]) { + key = _SHIFT_MAP[key]; + modifiers.push('shift'); + } + + // if this key is a modifier then add it to the list of modifiers + if (_isModifier(key)) { + modifiers.push(key); + } + } + + // depending on what the key combination is + // we will try to pick the best event for it + action = _pickBestAction(key, modifiers, action); + + return { + key: key, + modifiers: modifiers, + action: action + }; + } + + /** + * binds a single keyboard combination + * + * @param {string} combination + * @param {Function} callback + * @param {string=} action + * @param {string=} sequenceName - name of sequence if part of sequence + * @param {number=} level - what part of the sequence the command is + * @returns void + */ + function _bindSingle(combination, callback, action, sequenceName, level) { + + // store a direct mapped reference for use with Mousetrap.trigger + _directMap[combination + ':' + action] = callback; + + // make sure multiple spaces in a row become a single space + combination = combination.replace(/\s+/g, ' '); + + var sequence = combination.split(' '), + info; + + // if this pattern is a sequence of keys then run through this method + // to reprocess each pattern one key at a time + if (sequence.length > 1) { + _bindSequence(combination, sequence, callback, action); + return; + } + + info = _getKeyInfo(combination, action); + + // make sure to initialize array if this is the first time + // a callback is added for this key + _callbacks[info.key] = _callbacks[info.key] || []; + + // remove an existing match if there is one + _getMatches(info.key, info.modifiers, {type: info.action}, sequenceName, combination, level); + + // add this call back to the array + // if it is a sequence put it at the beginning + // if not put it at the end + // + // this is important because the way these are processed expects + // the sequence ones to come first + _callbacks[info.key][sequenceName ? 'unshift' : 'push']({ + callback: callback, + modifiers: info.modifiers, + action: info.action, + seq: sequenceName, + level: level, + combo: combination + }); + } + + /** + * binds multiple combinations to the same callback + * + * @param {Array} combinations + * @param {Function} callback + * @param {string|undefined} action + * @returns void + */ + function _bindMultiple(combinations, callback, action) { + for (var i = 0; i < combinations.length; ++i) { + _bindSingle(combinations[i], callback, action); + } + } + + // start! + _addEvent(document, 'keypress', _handleKeyEvent); + _addEvent(document, 'keydown', _handleKeyEvent); + _addEvent(document, 'keyup', _handleKeyEvent); + + var Mousetrap = { + + /** + * binds an event to mousetrap + * + * can be a single key, a combination of keys separated with +, + * an array of keys, or a sequence of keys separated by spaces + * + * be sure to list the modifier keys first to make sure that the + * correct key ends up getting bound (the last key in the pattern) + * + * @param {string|Array} keys + * @param {Function} callback + * @param {string=} action - 'keypress', 'keydown', or 'keyup' + * @returns void + */ + bind: function(keys, callback, action) { + keys = keys instanceof Array ? keys : [keys]; + _bindMultiple(keys, callback, action); + return this; + }, + + /** + * unbinds an event to mousetrap + * + * the unbinding sets the callback function of the specified key combo + * to an empty function and deletes the corresponding key in the + * _directMap dict. + * + * TODO: actually remove this from the _callbacks dictionary instead + * of binding an empty function + * + * the keycombo+action has to be exactly the same as + * it was defined in the bind method + * + * @param {string|Array} keys + * @param {string} action + * @returns void + */ + unbind: function(keys, action) { + return Mousetrap.bind(keys, function() {}, action); + }, + + /** + * triggers an event that has already been bound + * + * @param {string} keys + * @param {string=} action + * @returns void + */ + trigger: function(keys, action) { + if (_directMap[keys + ':' + action]) { + _directMap[keys + ':' + action]({}, keys); + } + return this; + }, + + /** + * resets the library back to its initial state. this is useful + * if you want to clear out the current keyboard shortcuts and bind + * new ones - for example if you switch to another page + * + * @returns void + */ + reset: function() { + _callbacks = {}; + _directMap = {}; + return this; + }, + + /** + * should we stop this event before firing off callbacks + * + * @param {Event} e + * @param {Element} element + * @return {boolean} + */ + stopCallback: function(e, element) { + + // if the element has the class "mousetrap" then no need to stop + if ((' ' + element.className + ' ').indexOf(' mousetrap ') > -1) { + return false; + } + + // stop for input, select, and textarea + return element.tagName == 'INPUT' || element.tagName == 'SELECT' || element.tagName == 'TEXTAREA' || element.isContentEditable; + }, + + /** + * exposes _handleKey publicly so it can be overwritten by extensions + */ + handleKey: _handleKey + }; + + // expose mousetrap to the global object + window.Mousetrap = Mousetrap; + + // expose mousetrap as an AMD module + if (typeof define === 'function' && define.amd) { + define('Mousetrap',Mousetrap); + } +}) (window, document); + +define('core/navigation',[ + "jQuery" +], function($) { + var goNext = function() { + var url = $("link[rel='next']").attr("href"); + if (url) location.href = url; + }; + var goPrev = function() { + var url = $("link[rel='prev']").attr("href"); + if (url) location.href = url; + }; + + return { + goNext: goNext, + goPrev: goPrev + }; +}); +define('utils/platform',[], function() { + return { + isMobile: /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) + }; +}); +/** + * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 0.5.2 + * Copyright (C) 2014 Oliver Nightingale + * MIT Licensed + * @license + */ + +(function(){ + +/** + * Convenience function for instantiating a new lunr index and configuring it + * with the default pipeline functions and the passed config function. + * + * When using this convenience function a new index will be created with the + * following functions already in the pipeline: + * + * lunr.StopWordFilter - filters out any stop words before they enter the + * index + * + * lunr.stemmer - stems the tokens before entering the index. + * + * Example: + * + * var idx = lunr(function () { + * this.field('title', 10) + * this.field('tags', 100) + * this.field('body') + * + * this.ref('cid') + * + * this.pipeline.add(function () { + * // some custom pipeline function + * }) + * + * }) + * + * @param {Function} config A function that will be called with the new instance + * of the lunr.Index as both its context and first parameter. It can be used to + * customize the instance of new lunr.Index. + * @namespace + * @module + * @returns {lunr.Index} + * + */ +var lunr = function (config) { + var idx = new lunr.Index + + idx.pipeline.add( + lunr.trimmer, + lunr.stopWordFilter, + lunr.stemmer + ) + + if (config) config.call(idx, idx) + + return idx +} + +lunr.version = "0.5.2" +/*! + * lunr.utils + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * A namespace containing utils for the rest of the lunr library + */ +lunr.utils = {} + +/** + * Print a warning message to the console. + * + * @param {String} message The message to be printed. + * @memberOf Utils + */ +lunr.utils.warn = (function (global) { + return function (message) { + if (global.console && console.warn) { + console.warn(message) + } + } +})(this) + +/*! + * lunr.EventEmitter + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.EventEmitter is an event emitter for lunr. It manages adding and removing event handlers and triggering events and their handlers. + * + * @constructor + */ +lunr.EventEmitter = function () { + this.events = {} +} + +/** + * Binds a handler function to a specific event(s). + * + * Can bind a single function to many different events in one call. + * + * @param {String} [eventName] The name(s) of events to bind this function to. + * @param {Function} handler The function to call when an event is fired. + * @memberOf EventEmitter + */ +lunr.EventEmitter.prototype.addListener = function () { + var args = Array.prototype.slice.call(arguments), + fn = args.pop(), + names = args + + if (typeof fn !== "function") throw new TypeError ("last argument must be a function") + + names.forEach(function (name) { + if (!this.hasHandler(name)) this.events[name] = [] + this.events[name].push(fn) + }, this) +} + +/** + * Removes a handler function from a specific event. + * + * @param {String} eventName The name of the event to remove this function from. + * @param {Function} handler The function to remove from an event. + * @memberOf EventEmitter + */ +lunr.EventEmitter.prototype.removeListener = function (name, fn) { + if (!this.hasHandler(name)) return + + var fnIndex = this.events[name].indexOf(fn) + this.events[name].splice(fnIndex, 1) + + if (!this.events[name].length) delete this.events[name] +} + +/** + * Calls all functions bound to the given event. + * + * Additional data can be passed to the event handler as arguments to `emit` + * after the event name. + * + * @param {String} eventName The name of the event to emit. + * @memberOf EventEmitter + */ +lunr.EventEmitter.prototype.emit = function (name) { + if (!this.hasHandler(name)) return + + var args = Array.prototype.slice.call(arguments, 1) + + this.events[name].forEach(function (fn) { + fn.apply(undefined, args) + }) +} + +/** + * Checks whether a handler has ever been stored against an event. + * + * @param {String} eventName The name of the event to check. + * @private + * @memberOf EventEmitter + */ +lunr.EventEmitter.prototype.hasHandler = function (name) { + return name in this.events +} + +/*! + * lunr.tokenizer + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * A function for splitting a string into tokens ready to be inserted into + * the search index. + * + * @module + * @param {String} obj The string to convert into tokens + * @returns {Array} + */ +lunr.tokenizer = function (obj) { + if (!arguments.length || obj == null || obj == undefined) return [] + if (Array.isArray(obj)) return obj.map(function (t) { return t.toLowerCase() }) + + var str = obj.toString().replace(/^\s+/, '') + + for (var i = str.length - 1; i >= 0; i--) { + if (/\S/.test(str.charAt(i))) { + str = str.substring(0, i + 1) + break + } + } + + return str + .split(/\s+/) + .map(function (token) { + return token.toLowerCase() + }) +} +/*! + * lunr.Pipeline + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.Pipelines maintain an ordered list of functions to be applied to all + * tokens in documents entering the search index and queries being ran against + * the index. + * + * An instance of lunr.Index created with the lunr shortcut will contain a + * pipeline with a stop word filter and an English language stemmer. Extra + * functions can be added before or after either of these functions or these + * default functions can be removed. + * + * When run the pipeline will call each function in turn, passing a token, the + * index of that token in the original list of all tokens and finally a list of + * all the original tokens. + * + * The output of functions in the pipeline will be passed to the next function + * in the pipeline. To exclude a token from entering the index the function + * should return undefined, the rest of the pipeline will not be called with + * this token. + * + * For serialisation of pipelines to work, all functions used in an instance of + * a pipeline should be registered with lunr.Pipeline. Registered functions can + * then be loaded. If trying to load a serialised pipeline that uses functions + * that are not registered an error will be thrown. + * + * If not planning on serialising the pipeline then registering pipeline functions + * is not necessary. + * + * @constructor + */ +lunr.Pipeline = function () { + this._stack = [] +} + +lunr.Pipeline.registeredFunctions = {} + +/** + * Register a function with the pipeline. + * + * Functions that are used in the pipeline should be registered if the pipeline + * needs to be serialised, or a serialised pipeline needs to be loaded. + * + * Registering a function does not add it to a pipeline, functions must still be + * added to instances of the pipeline for them to be used when running a pipeline. + * + * @param {Function} fn The function to check for. + * @param {String} label The label to register this function with + * @memberOf Pipeline + */ +lunr.Pipeline.registerFunction = function (fn, label) { + if (label in this.registeredFunctions) { + lunr.utils.warn('Overwriting existing registered function: ' + label) + } + + fn.label = label + lunr.Pipeline.registeredFunctions[fn.label] = fn +} + +/** + * Warns if the function is not registered as a Pipeline function. + * + * @param {Function} fn The function to check for. + * @private + * @memberOf Pipeline + */ +lunr.Pipeline.warnIfFunctionNotRegistered = function (fn) { + var isRegistered = fn.label && (fn.label in this.registeredFunctions) + + if (!isRegistered) { + lunr.utils.warn('Function is not registered with pipeline. This may cause problems when serialising the index.\n', fn) + } +} + +/** + * Loads a previously serialised pipeline. + * + * All functions to be loaded must already be registered with lunr.Pipeline. + * If any function from the serialised data has not been registered then an + * error will be thrown. + * + * @param {Object} serialised The serialised pipeline to load. + * @returns {lunr.Pipeline} + * @memberOf Pipeline + */ +lunr.Pipeline.load = function (serialised) { + var pipeline = new lunr.Pipeline + + serialised.forEach(function (fnName) { + var fn = lunr.Pipeline.registeredFunctions[fnName] + + if (fn) { + pipeline.add(fn) + } else { + throw new Error ('Cannot load un-registered function: ' + fnName) + } + }) + + return pipeline +} + +/** + * Adds new functions to the end of the pipeline. + * + * Logs a warning if the function has not been registered. + * + * @param {Function} functions Any number of functions to add to the pipeline. + * @memberOf Pipeline + */ +lunr.Pipeline.prototype.add = function () { + var fns = Array.prototype.slice.call(arguments) + + fns.forEach(function (fn) { + lunr.Pipeline.warnIfFunctionNotRegistered(fn) + this._stack.push(fn) + }, this) +} + +/** + * Adds a single function after a function that already exists in the + * pipeline. + * + * Logs a warning if the function has not been registered. + * + * @param {Function} existingFn A function that already exists in the pipeline. + * @param {Function} newFn The new function to add to the pipeline. + * @memberOf Pipeline + */ +lunr.Pipeline.prototype.after = function (existingFn, newFn) { + lunr.Pipeline.warnIfFunctionNotRegistered(newFn) + + var pos = this._stack.indexOf(existingFn) + 1 + this._stack.splice(pos, 0, newFn) +} + +/** + * Adds a single function before a function that already exists in the + * pipeline. + * + * Logs a warning if the function has not been registered. + * + * @param {Function} existingFn A function that already exists in the pipeline. + * @param {Function} newFn The new function to add to the pipeline. + * @memberOf Pipeline + */ +lunr.Pipeline.prototype.before = function (existingFn, newFn) { + lunr.Pipeline.warnIfFunctionNotRegistered(newFn) + + var pos = this._stack.indexOf(existingFn) + this._stack.splice(pos, 0, newFn) +} + +/** + * Removes a function from the pipeline. + * + * @param {Function} fn The function to remove from the pipeline. + * @memberOf Pipeline + */ +lunr.Pipeline.prototype.remove = function (fn) { + var pos = this._stack.indexOf(fn) + this._stack.splice(pos, 1) +} + +/** + * Runs the current list of functions that make up the pipeline against the + * passed tokens. + * + * @param {Array} tokens The tokens to run through the pipeline. + * @returns {Array} + * @memberOf Pipeline + */ +lunr.Pipeline.prototype.run = function (tokens) { + var out = [], + tokenLength = tokens.length, + stackLength = this._stack.length + + for (var i = 0; i < tokenLength; i++) { + var token = tokens[i] + + for (var j = 0; j < stackLength; j++) { + token = this._stack[j](token, i, tokens) + if (token === void 0) break + }; + + if (token !== void 0) out.push(token) + }; + + return out +} + +/** + * Resets the pipeline by removing any existing processors. + * + * @memberOf Pipeline + */ +lunr.Pipeline.prototype.reset = function () { + this._stack = [] +} + +/** + * Returns a representation of the pipeline ready for serialisation. + * + * Logs a warning if the function has not been registered. + * + * @returns {Array} + * @memberOf Pipeline + */ +lunr.Pipeline.prototype.toJSON = function () { + return this._stack.map(function (fn) { + lunr.Pipeline.warnIfFunctionNotRegistered(fn) + + return fn.label + }) +} +/*! + * lunr.Vector + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.Vectors implement vector related operations for + * a series of elements. + * + * @constructor + */ +lunr.Vector = function () { + this._magnitude = null + this.list = undefined + this.length = 0 +} + +/** + * lunr.Vector.Node is a simple struct for each node + * in a lunr.Vector. + * + * @private + * @param {Number} The index of the node in the vector. + * @param {Object} The data at this node in the vector. + * @param {lunr.Vector.Node} The node directly after this node in the vector. + * @constructor + * @memberOf Vector + */ +lunr.Vector.Node = function (idx, val, next) { + this.idx = idx + this.val = val + this.next = next +} + +/** + * Inserts a new value at a position in a vector. + * + * @param {Number} The index at which to insert a value. + * @param {Object} The object to insert in the vector. + * @memberOf Vector. + */ +lunr.Vector.prototype.insert = function (idx, val) { + var list = this.list + + if (!list) { + this.list = new lunr.Vector.Node (idx, val, list) + return this.length++ + } + + var prev = list, + next = list.next + + while (next != undefined) { + if (idx < next.idx) { + prev.next = new lunr.Vector.Node (idx, val, next) + return this.length++ + } + + prev = next, next = next.next + } + + prev.next = new lunr.Vector.Node (idx, val, next) + return this.length++ +} + +/** + * Calculates the magnitude of this vector. + * + * @returns {Number} + * @memberOf Vector + */ +lunr.Vector.prototype.magnitude = function () { + if (this._magniture) return this._magnitude + var node = this.list, + sumOfSquares = 0, + val + + while (node) { + val = node.val + sumOfSquares += val * val + node = node.next + } + + return this._magnitude = Math.sqrt(sumOfSquares) +} + +/** + * Calculates the dot product of this vector and another vector. + * + * @param {lunr.Vector} otherVector The vector to compute the dot product with. + * @returns {Number} + * @memberOf Vector + */ +lunr.Vector.prototype.dot = function (otherVector) { + var node = this.list, + otherNode = otherVector.list, + dotProduct = 0 + + while (node && otherNode) { + if (node.idx < otherNode.idx) { + node = node.next + } else if (node.idx > otherNode.idx) { + otherNode = otherNode.next + } else { + dotProduct += node.val * otherNode.val + node = node.next + otherNode = otherNode.next + } + } + + return dotProduct +} + +/** + * Calculates the cosine similarity between this vector and another + * vector. + * + * @param {lunr.Vector} otherVector The other vector to calculate the + * similarity with. + * @returns {Number} + * @memberOf Vector + */ +lunr.Vector.prototype.similarity = function (otherVector) { + return this.dot(otherVector) / (this.magnitude() * otherVector.magnitude()) +} +/*! + * lunr.SortedSet + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.SortedSets are used to maintain an array of uniq values in a sorted + * order. + * + * @constructor + */ +lunr.SortedSet = function () { + this.length = 0 + this.elements = [] +} + +/** + * Loads a previously serialised sorted set. + * + * @param {Array} serialisedData The serialised set to load. + * @returns {lunr.SortedSet} + * @memberOf SortedSet + */ +lunr.SortedSet.load = function (serialisedData) { + var set = new this + + set.elements = serialisedData + set.length = serialisedData.length + + return set +} + +/** + * Inserts new items into the set in the correct position to maintain the + * order. + * + * @param {Object} The objects to add to this set. + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.add = function () { + Array.prototype.slice.call(arguments).forEach(function (element) { + if (~this.indexOf(element)) return + this.elements.splice(this.locationFor(element), 0, element) + }, this) + + this.length = this.elements.length +} + +/** + * Converts this sorted set into an array. + * + * @returns {Array} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.toArray = function () { + return this.elements.slice() +} + +/** + * Creates a new array with the results of calling a provided function on every + * element in this sorted set. + * + * Delegates to Array.prototype.map and has the same signature. + * + * @param {Function} fn The function that is called on each element of the + * set. + * @param {Object} ctx An optional object that can be used as the context + * for the function fn. + * @returns {Array} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.map = function (fn, ctx) { + return this.elements.map(fn, ctx) +} + +/** + * Executes a provided function once per sorted set element. + * + * Delegates to Array.prototype.forEach and has the same signature. + * + * @param {Function} fn The function that is called on each element of the + * set. + * @param {Object} ctx An optional object that can be used as the context + * @memberOf SortedSet + * for the function fn. + */ +lunr.SortedSet.prototype.forEach = function (fn, ctx) { + return this.elements.forEach(fn, ctx) +} + +/** + * Returns the index at which a given element can be found in the + * sorted set, or -1 if it is not present. + * + * @param {Object} elem The object to locate in the sorted set. + * @param {Number} start An optional index at which to start searching from + * within the set. + * @param {Number} end An optional index at which to stop search from within + * the set. + * @returns {Number} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.indexOf = function (elem, start, end) { + var start = start || 0, + end = end || this.elements.length, + sectionLength = end - start, + pivot = start + Math.floor(sectionLength / 2), + pivotElem = this.elements[pivot] + + if (sectionLength <= 1) { + if (pivotElem === elem) { + return pivot + } else { + return -1 + } + } + + if (pivotElem < elem) return this.indexOf(elem, pivot, end) + if (pivotElem > elem) return this.indexOf(elem, start, pivot) + if (pivotElem === elem) return pivot +} + +/** + * Returns the position within the sorted set that an element should be + * inserted at to maintain the current order of the set. + * + * This function assumes that the element to search for does not already exist + * in the sorted set. + * + * @param {Object} elem The elem to find the position for in the set + * @param {Number} start An optional index at which to start searching from + * within the set. + * @param {Number} end An optional index at which to stop search from within + * the set. + * @returns {Number} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.locationFor = function (elem, start, end) { + var start = start || 0, + end = end || this.elements.length, + sectionLength = end - start, + pivot = start + Math.floor(sectionLength / 2), + pivotElem = this.elements[pivot] + + if (sectionLength <= 1) { + if (pivotElem > elem) return pivot + if (pivotElem < elem) return pivot + 1 + } + + if (pivotElem < elem) return this.locationFor(elem, pivot, end) + if (pivotElem > elem) return this.locationFor(elem, start, pivot) +} + +/** + * Creates a new lunr.SortedSet that contains the elements in the intersection + * of this set and the passed set. + * + * @param {lunr.SortedSet} otherSet The set to intersect with this set. + * @returns {lunr.SortedSet} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.intersect = function (otherSet) { + var intersectSet = new lunr.SortedSet, + i = 0, j = 0, + a_len = this.length, b_len = otherSet.length, + a = this.elements, b = otherSet.elements + + while (true) { + if (i > a_len - 1 || j > b_len - 1) break + + if (a[i] === b[j]) { + intersectSet.add(a[i]) + i++, j++ + continue + } + + if (a[i] < b[j]) { + i++ + continue + } + + if (a[i] > b[j]) { + j++ + continue + } + }; + + return intersectSet +} + +/** + * Makes a copy of this set + * + * @returns {lunr.SortedSet} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.clone = function () { + var clone = new lunr.SortedSet + + clone.elements = this.toArray() + clone.length = clone.elements.length + + return clone +} + +/** + * Creates a new lunr.SortedSet that contains the elements in the union + * of this set and the passed set. + * + * @param {lunr.SortedSet} otherSet The set to union with this set. + * @returns {lunr.SortedSet} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.union = function (otherSet) { + var longSet, shortSet, unionSet + + if (this.length >= otherSet.length) { + longSet = this, shortSet = otherSet + } else { + longSet = otherSet, shortSet = this + } + + unionSet = longSet.clone() + + unionSet.add.apply(unionSet, shortSet.toArray()) + + return unionSet +} + +/** + * Returns a representation of the sorted set ready for serialisation. + * + * @returns {Array} + * @memberOf SortedSet + */ +lunr.SortedSet.prototype.toJSON = function () { + return this.toArray() +} +/*! + * lunr.Index + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.Index is object that manages a search index. It contains the indexes + * and stores all the tokens and document lookups. It also provides the main + * user facing API for the library. + * + * @constructor + */ +lunr.Index = function () { + this._fields = [] + this._ref = 'id' + this.pipeline = new lunr.Pipeline + this.documentStore = new lunr.Store + this.tokenStore = new lunr.TokenStore + this.corpusTokens = new lunr.SortedSet + this.eventEmitter = new lunr.EventEmitter + + this._idfCache = {} + + this.on('add', 'remove', 'update', (function () { + this._idfCache = {} + }).bind(this)) +} + +/** + * Bind a handler to events being emitted by the index. + * + * The handler can be bound to many events at the same time. + * + * @param {String} [eventName] The name(s) of events to bind the function to. + * @param {Function} handler The serialised set to load. + * @memberOf Index + */ +lunr.Index.prototype.on = function () { + var args = Array.prototype.slice.call(arguments) + return this.eventEmitter.addListener.apply(this.eventEmitter, args) +} + +/** + * Removes a handler from an event being emitted by the index. + * + * @param {String} eventName The name of events to remove the function from. + * @param {Function} handler The serialised set to load. + * @memberOf Index + */ +lunr.Index.prototype.off = function (name, fn) { + return this.eventEmitter.removeListener(name, fn) +} + +/** + * Loads a previously serialised index. + * + * Issues a warning if the index being imported was serialised + * by a different version of lunr. + * + * @param {Object} serialisedData The serialised set to load. + * @returns {lunr.Index} + * @memberOf Index + */ +lunr.Index.load = function (serialisedData) { + if (serialisedData.version !== lunr.version) { + lunr.utils.warn('version mismatch: current ' + lunr.version + ' importing ' + serialisedData.version) + } + + var idx = new this + + idx._fields = serialisedData.fields + idx._ref = serialisedData.ref + + idx.documentStore = lunr.Store.load(serialisedData.documentStore) + idx.tokenStore = lunr.TokenStore.load(serialisedData.tokenStore) + idx.corpusTokens = lunr.SortedSet.load(serialisedData.corpusTokens) + idx.pipeline = lunr.Pipeline.load(serialisedData.pipeline) + + return idx +} + +/** + * Adds a field to the list of fields that will be searchable within documents + * in the index. + * + * An optional boost param can be passed to affect how much tokens in this field + * rank in search results, by default the boost value is 1. + * + * Fields should be added before any documents are added to the index, fields + * that are added after documents are added to the index will only apply to new + * documents added to the index. + * + * @param {String} fieldName The name of the field within the document that + * should be indexed + * @param {Number} boost An optional boost that can be applied to terms in this + * field. + * @returns {lunr.Index} + * @memberOf Index + */ +lunr.Index.prototype.field = function (fieldName, opts) { + var opts = opts || {}, + field = { name: fieldName, boost: opts.boost || 1 } + + this._fields.push(field) + return this +} + +/** + * Sets the property used to uniquely identify documents added to the index, + * by default this property is 'id'. + * + * This should only be changed before adding documents to the index, changing + * the ref property without resetting the index can lead to unexpected results. + * + * @param {String} refName The property to use to uniquely identify the + * documents in the index. + * @param {Boolean} emitEvent Whether to emit add events, defaults to true + * @returns {lunr.Index} + * @memberOf Index + */ +lunr.Index.prototype.ref = function (refName) { + this._ref = refName + return this +} + +/** + * Add a document to the index. + * + * This is the way new documents enter the index, this function will run the + * fields from the document through the index's pipeline and then add it to + * the index, it will then show up in search results. + * + * An 'add' event is emitted with the document that has been added and the index + * the document has been added to. This event can be silenced by passing false + * as the second argument to add. + * + * @param {Object} doc The document to add to the index. + * @param {Boolean} emitEvent Whether or not to emit events, default true. + * @memberOf Index + */ +lunr.Index.prototype.add = function (doc, emitEvent) { + var docTokens = {}, + allDocumentTokens = new lunr.SortedSet, + docRef = doc[this._ref], + emitEvent = emitEvent === undefined ? true : emitEvent + + this._fields.forEach(function (field) { + var fieldTokens = this.pipeline.run(lunr.tokenizer(doc[field.name])) + + docTokens[field.name] = fieldTokens + lunr.SortedSet.prototype.add.apply(allDocumentTokens, fieldTokens) + }, this) + + this.documentStore.set(docRef, allDocumentTokens) + lunr.SortedSet.prototype.add.apply(this.corpusTokens, allDocumentTokens.toArray()) + + for (var i = 0; i < allDocumentTokens.length; i++) { + var token = allDocumentTokens.elements[i] + var tf = this._fields.reduce(function (memo, field) { + var fieldLength = docTokens[field.name].length + + if (!fieldLength) return memo + + var tokenCount = docTokens[field.name].filter(function (t) { return t === token }).length + + return memo + (tokenCount / fieldLength * field.boost) + }, 0) + + this.tokenStore.add(token, { ref: docRef, tf: tf }) + }; + + if (emitEvent) this.eventEmitter.emit('add', doc, this) +} + +/** + * Removes a document from the index. + * + * To make sure documents no longer show up in search results they can be + * removed from the index using this method. + * + * The document passed only needs to have the same ref property value as the + * document that was added to the index, they could be completely different + * objects. + * + * A 'remove' event is emitted with the document that has been removed and the index + * the document has been removed from. This event can be silenced by passing false + * as the second argument to remove. + * + * @param {Object} doc The document to remove from the index. + * @param {Boolean} emitEvent Whether to emit remove events, defaults to true + * @memberOf Index + */ +lunr.Index.prototype.remove = function (doc, emitEvent) { + var docRef = doc[this._ref], + emitEvent = emitEvent === undefined ? true : emitEvent + + if (!this.documentStore.has(docRef)) return + + var docTokens = this.documentStore.get(docRef) + + this.documentStore.remove(docRef) + + docTokens.forEach(function (token) { + this.tokenStore.remove(token, docRef) + }, this) + + if (emitEvent) this.eventEmitter.emit('remove', doc, this) +} + +/** + * Updates a document in the index. + * + * When a document contained within the index gets updated, fields changed, + * added or removed, to make sure it correctly matched against search queries, + * it should be updated in the index. + * + * This method is just a wrapper around `remove` and `add` + * + * An 'update' event is emitted with the document that has been updated and the index. + * This event can be silenced by passing false as the second argument to update. Only + * an update event will be fired, the 'add' and 'remove' events of the underlying calls + * are silenced. + * + * @param {Object} doc The document to update in the index. + * @param {Boolean} emitEvent Whether to emit update events, defaults to true + * @see Index.prototype.remove + * @see Index.prototype.add + * @memberOf Index + */ +lunr.Index.prototype.update = function (doc, emitEvent) { + var emitEvent = emitEvent === undefined ? true : emitEvent + + this.remove(doc, false) + this.add(doc, false) + + if (emitEvent) this.eventEmitter.emit('update', doc, this) +} + +/** + * Calculates the inverse document frequency for a token within the index. + * + * @param {String} token The token to calculate the idf of. + * @see Index.prototype.idf + * @private + * @memberOf Index + */ +lunr.Index.prototype.idf = function (term) { + var cacheKey = "@" + term + if (Object.prototype.hasOwnProperty.call(this._idfCache, cacheKey)) return this._idfCache[cacheKey] + + var documentFrequency = this.tokenStore.count(term), + idf = 1 + + if (documentFrequency > 0) { + idf = 1 + Math.log(this.tokenStore.length / documentFrequency) + } + + return this._idfCache[cacheKey] = idf +} + +/** + * Searches the index using the passed query. + * + * Queries should be a string, multiple words are allowed and will lead to an + * AND based query, e.g. `idx.search('foo bar')` will run a search for + * documents containing both 'foo' and 'bar'. + * + * All query tokens are passed through the same pipeline that document tokens + * are passed through, so any language processing involved will be run on every + * query term. + * + * Each query term is expanded, so that the term 'he' might be expanded to + * 'hello' and 'help' if those terms were already included in the index. + * + * Matching documents are returned as an array of objects, each object contains + * the matching document ref, as set for this index, and the similarity score + * for this document against the query. + * + * @param {String} query The query to search the index with. + * @returns {Object} + * @see Index.prototype.idf + * @see Index.prototype.documentVector + * @memberOf Index + */ +lunr.Index.prototype.search = function (query) { + var queryTokens = this.pipeline.run(lunr.tokenizer(query)), + queryVector = new lunr.Vector, + documentSets = [], + fieldBoosts = this._fields.reduce(function (memo, f) { return memo + f.boost }, 0) + + var hasSomeToken = queryTokens.some(function (token) { + return this.tokenStore.has(token) + }, this) + + if (!hasSomeToken) return [] + + queryTokens + .forEach(function (token, i, tokens) { + var tf = 1 / tokens.length * this._fields.length * fieldBoosts, + self = this + + var set = this.tokenStore.expand(token).reduce(function (memo, key) { + var pos = self.corpusTokens.indexOf(key), + idf = self.idf(key), + similarityBoost = 1, + set = new lunr.SortedSet + + // if the expanded key is not an exact match to the token then + // penalise the score for this key by how different the key is + // to the token. + if (key !== token) { + var diff = Math.max(3, key.length - token.length) + similarityBoost = 1 / Math.log(diff) + } + + // calculate the query tf-idf score for this token + // applying an similarityBoost to ensure exact matches + // these rank higher than expanded terms + if (pos > -1) queryVector.insert(pos, tf * idf * similarityBoost) + + // add all the documents that have this key into a set + Object.keys(self.tokenStore.get(key)).forEach(function (ref) { set.add(ref) }) + + return memo.union(set) + }, new lunr.SortedSet) + + documentSets.push(set) + }, this) + + var documentSet = documentSets.reduce(function (memo, set) { + return memo.intersect(set) + }) + + return documentSet + .map(function (ref) { + return { ref: ref, score: queryVector.similarity(this.documentVector(ref)) } + }, this) + .sort(function (a, b) { + return b.score - a.score + }) +} + +/** + * Generates a vector containing all the tokens in the document matching the + * passed documentRef. + * + * The vector contains the tf-idf score for each token contained in the + * document with the passed documentRef. The vector will contain an element + * for every token in the indexes corpus, if the document does not contain that + * token the element will be 0. + * + * @param {Object} documentRef The ref to find the document with. + * @returns {lunr.Vector} + * @private + * @memberOf Index + */ +lunr.Index.prototype.documentVector = function (documentRef) { + var documentTokens = this.documentStore.get(documentRef), + documentTokensLength = documentTokens.length, + documentVector = new lunr.Vector + + for (var i = 0; i < documentTokensLength; i++) { + var token = documentTokens.elements[i], + tf = this.tokenStore.get(token)[documentRef].tf, + idf = this.idf(token) + + documentVector.insert(this.corpusTokens.indexOf(token), tf * idf) + }; + + return documentVector +} + +/** + * Returns a representation of the index ready for serialisation. + * + * @returns {Object} + * @memberOf Index + */ +lunr.Index.prototype.toJSON = function () { + return { + version: lunr.version, + fields: this._fields, + ref: this._ref, + documentStore: this.documentStore.toJSON(), + tokenStore: this.tokenStore.toJSON(), + corpusTokens: this.corpusTokens.toJSON(), + pipeline: this.pipeline.toJSON() + } +} + +/** + * Applies a plugin to the current index. + * + * A plugin is a function that is called with the index as its context. + * Plugins can be used to customise or extend the behaviour the index + * in some way. A plugin is just a function, that encapsulated the custom + * behaviour that should be applied to the index. + * + * The plugin function will be called with the index as its argument, additional + * arguments can also be passed when calling use. The function will be called + * with the index as its context. + * + * Example: + * + * var myPlugin = function (idx, arg1, arg2) { + * // `this` is the index to be extended + * // apply any extensions etc here. + * } + * + * var idx = lunr(function () { + * this.use(myPlugin, 'arg1', 'arg2') + * }) + * + * @param {Function} plugin The plugin to apply. + * @memberOf Index + */ +lunr.Index.prototype.use = function (plugin) { + var args = Array.prototype.slice.call(arguments, 1) + args.unshift(this) + plugin.apply(this, args) +} +/*! + * lunr.Store + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.Store is a simple key-value store used for storing sets of tokens for + * documents stored in index. + * + * @constructor + * @module + */ +lunr.Store = function () { + this.store = {} + this.length = 0 +} + +/** + * Loads a previously serialised store + * + * @param {Object} serialisedData The serialised store to load. + * @returns {lunr.Store} + * @memberOf Store + */ +lunr.Store.load = function (serialisedData) { + var store = new this + + store.length = serialisedData.length + store.store = Object.keys(serialisedData.store).reduce(function (memo, key) { + memo[key] = lunr.SortedSet.load(serialisedData.store[key]) + return memo + }, {}) + + return store +} + +/** + * Stores the given tokens in the store against the given id. + * + * @param {Object} id The key used to store the tokens against. + * @param {Object} tokens The tokens to store against the key. + * @memberOf Store + */ +lunr.Store.prototype.set = function (id, tokens) { + this.store[id] = tokens + this.length = Object.keys(this.store).length +} + +/** + * Retrieves the tokens from the store for a given key. + * + * @param {Object} id The key to lookup and retrieve from the store. + * @returns {Object} + * @memberOf Store + */ +lunr.Store.prototype.get = function (id) { + return this.store[id] +} + +/** + * Checks whether the store contains a key. + * + * @param {Object} id The id to look up in the store. + * @returns {Boolean} + * @memberOf Store + */ +lunr.Store.prototype.has = function (id) { + return id in this.store +} + +/** + * Removes the value for a key in the store. + * + * @param {Object} id The id to remove from the store. + * @memberOf Store + */ +lunr.Store.prototype.remove = function (id) { + if (!this.has(id)) return + + delete this.store[id] + this.length-- +} + +/** + * Returns a representation of the store ready for serialisation. + * + * @returns {Object} + * @memberOf Store + */ +lunr.Store.prototype.toJSON = function () { + return { + store: this.store, + length: this.length + } +} + +/*! + * lunr.stemmer + * Copyright (C) 2014 Oliver Nightingale + * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt + */ + +/** + * lunr.stemmer is an english language stemmer, this is a JavaScript + * implementation of the PorterStemmer taken from http://tartaurs.org/~martin + * + * @module + * @param {String} str The string to stem + * @returns {String} + * @see lunr.Pipeline + */ +lunr.stemmer = (function(){ + var step2list = { + "ational" : "ate", + "tional" : "tion", + "enci" : "ence", + "anci" : "ance", + "izer" : "ize", + "bli" : "ble", + "alli" : "al", + "entli" : "ent", + "eli" : "e", + "ousli" : "ous", + "ization" : "ize", + "ation" : "ate", + "ator" : "ate", + "alism" : "al", + "iveness" : "ive", + "fulness" : "ful", + "ousness" : "ous", + "aliti" : "al", + "iviti" : "ive", + "biliti" : "ble", + "logi" : "log" + }, + + step3list = { + "icate" : "ic", + "ative" : "", + "alize" : "al", + "iciti" : "ic", + "ical" : "ic", + "ful" : "", + "ness" : "" + }, + + c = "[^aeiou]", // consonant + v = "[aeiouy]", // vowel + C = c + "[^aeiouy]*", // consonant sequence + V = v + "[aeiou]*", // vowel sequence + + mgr0 = "^(" + C + ")?" + V + C, // [C]VC... is m>0 + meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$", // [C]VC[V] is m=1 + mgr1 = "^(" + C + ")?" + V + C + V + C, // [C]VCVC... is m>1 + s_v = "^(" + C + ")?" + v; // vowel in stem + + return function (w) { + var stem, + suffix, + firstch, + re, + re2, + re3, + re4; + + if (w.length < 3) { return w; } + + firstch = w.substr(0,1); + if (firstch == "y") { + w = firstch.toUpperCase() + w.substr(1); + } + + // Step 1a + re = /^(.+?)(ss|i)es$/; + re2 = /^(.+?)([^s])s$/; + + if (re.test(w)) { w = w.replace(re,"$1$2"); } + else if (re2.test(w)) { w = w.replace(re2,"$1$2"); } + + // Step 1b + re = /^(.+?)eed$/; + re2 = /^(.+?)(ed|ing)$/; + if (re.test(w)) { + var fp = re.exec(w); + re = new RegExp(mgr0); + if (re.test(fp[1])) { + re = /.$/; + w = w.replace(re,""); + } + } else if (re2.test(w)) { + var fp = re2.exec(w); + stem = fp[1]; + re2 = new RegExp(s_v); + if (re2.test(stem)) { + w = stem; + re2 = /(at|bl|iz)$/; + re3 = new RegExp("([^aeiouylsz])\\1$"); + re4 = new RegExp("^" + C + v + "[^aeiouwxy]$"); + if (re2.test(w)) { w = w + "e"; } + else if (re3.test(w)) { re = /.$/; w = w.replace(re,""); } + else if (re4.test(w)) { w = w + "e"; } + } + } + + // Step 1c + re = /^(.+?)y$/; + if (re.test(w)) { + var fp = re.exec(w); + stem = fp[1]; + re = new RegExp(s_v); + if (re.test(stem)) { w = stem + "i"; } + } + + // Step 2 + re = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/; + if (re.test(w)) { + var fp = re.exec(w); + stem = fp[1]; + suffix = fp[2]; + re = new RegExp(mgr0); + if (re.test(stem)) { + w = stem + step2list[suffix]; + } + } + + // Step 3 + re = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/; + if (re.test(w)) { + var fp = re.exec(w); + stem = fp[1]; + suffix = fp[2]; + re = new RegExp(mgr0); + if (re.test(stem)) { + w = stem + step3list[suffix]; + } + } + + // Step 4 + re = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/; + re2 = /^(.+?)(s|t)(ion)$/; + if (re.test(w)) { + var fp = re.exec(w); + stem = fp[1]; + re = new RegExp(mgr1); + if (re.test(stem)) { + w = stem; + } + } else if (re2.test(w)) { + var fp = re2.exec(w); + stem = fp[1] + fp[2]; + re2 = new RegExp(mgr1); + if (re2.test(stem)) { + w = stem; + } + } + + // Step 5 + re = /^(.+?)e$/; + if (re.test(w)) { + var fp = re.exec(w); + stem = fp[1]; + re = new RegExp(mgr1); + re2 = new RegExp(meq1); + re3 = new RegExp("^" + C + v + "[^aeiouwxy]$"); + if (re.test(stem) || (re2.test(stem) && !(re3.test(stem)))) { + w = stem; + } + } + + re = /ll$/; + re2 = new RegExp(mgr1); + if (re.test(w) && re2.test(w)) { + re = /.$/; + w = w.replace(re,""); + } + + // and turn initial Y back to y + + if (firstch == "y") { + w = firstch.toLowerCase() + w.substr(1); + } + + return w; + } +})(); + +lunr.Pipeline.registerFunction(lunr.stemmer, 'stemmer') +/*! + * lunr.stopWordFilter + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.stopWordFilter is an English language stop word list filter, any words + * contained in the list will not be passed through the filter. + * + * This is intended to be used in the Pipeline. If the token does not pass the + * filter then undefined will be returned. + * + * @module + * @param {String} token The token to pass through the filter + * @returns {String} + * @see lunr.Pipeline + */ +lunr.stopWordFilter = function (token) { + if (lunr.stopWordFilter.stopWords.indexOf(token) === -1) return token +} + +lunr.stopWordFilter.stopWords = new lunr.SortedSet +lunr.stopWordFilter.stopWords.length = 119 +lunr.stopWordFilter.stopWords.elements = [ + "", + "a", + "able", + "about", + "across", + "after", + "all", + "almost", + "also", + "am", + "among", + "an", + "and", + "any", + "are", + "as", + "at", + "be", + "because", + "been", + "but", + "by", + "can", + "cannot", + "could", + "dear", + "did", + "do", + "does", + "either", + "else", + "ever", + "every", + "for", + "from", + "get", + "got", + "had", + "has", + "have", + "he", + "her", + "hers", + "him", + "his", + "how", + "however", + "i", + "if", + "in", + "into", + "is", + "it", + "its", + "just", + "least", + "let", + "like", + "likely", + "may", + "me", + "might", + "most", + "must", + "my", + "neither", + "no", + "nor", + "not", + "of", + "off", + "often", + "on", + "only", + "or", + "other", + "our", + "own", + "rather", + "said", + "say", + "says", + "she", + "should", + "since", + "so", + "some", + "than", + "that", + "the", + "their", + "them", + "then", + "there", + "these", + "they", + "this", + "tis", + "to", + "too", + "twas", + "us", + "wants", + "was", + "we", + "were", + "what", + "when", + "where", + "which", + "while", + "who", + "whom", + "why", + "will", + "with", + "would", + "yet", + "you", + "your" +] + +lunr.Pipeline.registerFunction(lunr.stopWordFilter, 'stopWordFilter') +/*! + * lunr.trimmer + * Copyright (C) 2014 Oliver Nightingale + */ + +/** + * lunr.trimmer is a pipeline function for trimming non word + * characters from the begining and end of tokens before they + * enter the index. + * + * This implementation may not work correctly for non latin + * characters and should either be removed or adapted for use + * with languages with non-latin characters. + * + * @module + * @param {String} token The token to pass through the filter + * @returns {String} + * @see lunr.Pipeline + */ +lunr.trimmer = function (token) { + return token + .replace(/^\W+/, '') + .replace(/\W+$/, '') +} + +lunr.Pipeline.registerFunction(lunr.trimmer, 'trimmer') +/*! + * lunr.stemmer + * Copyright (C) 2014 Oliver Nightingale + * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt + */ + +/** + * lunr.TokenStore is used for efficient storing and lookup of the reverse + * index of token to document ref. + * + * @constructor + */ +lunr.TokenStore = function () { + this.root = { docs: {} } + this.length = 0 +} + +/** + * Loads a previously serialised token store + * + * @param {Object} serialisedData The serialised token store to load. + * @returns {lunr.TokenStore} + * @memberOf TokenStore + */ +lunr.TokenStore.load = function (serialisedData) { + var store = new this + + store.root = serialisedData.root + store.length = serialisedData.length + + return store +} + +/** + * Adds a new token doc pair to the store. + * + * By default this function starts at the root of the current store, however + * it can start at any node of any token store if required. + * + * @param {String} token The token to store the doc under + * @param {Object} doc The doc to store against the token + * @param {Object} root An optional node at which to start looking for the + * correct place to enter the doc, by default the root of this lunr.TokenStore + * is used. + * @memberOf TokenStore + */ +lunr.TokenStore.prototype.add = function (token, doc, root) { + var root = root || this.root, + key = token[0], + rest = token.slice(1) + + if (!(key in root)) root[key] = {docs: {}} + + if (rest.length === 0) { + root[key].docs[doc.ref] = doc + this.length += 1 + return + } else { + return this.add(rest, doc, root[key]) + } +} + +/** + * Checks whether this key is contained within this lunr.TokenStore. + * + * By default this function starts at the root of the current store, however + * it can start at any node of any token store if required. + * + * @param {String} token The token to check for + * @param {Object} root An optional node at which to start + * @memberOf TokenStore + */ +lunr.TokenStore.prototype.has = function (token) { + if (!token) return false + + var node = this.root + + for (var i = 0; i < token.length; i++) { + if (!node[token[i]]) return false + + node = node[token[i]] + } + + return true +} + +/** + * Retrieve a node from the token store for a given token. + * + * By default this function starts at the root of the current store, however + * it can start at any node of any token store if required. + * + * @param {String} token The token to get the node for. + * @param {Object} root An optional node at which to start. + * @returns {Object} + * @see TokenStore.prototype.get + * @memberOf TokenStore + */ +lunr.TokenStore.prototype.getNode = function (token) { + if (!token) return {} + + var node = this.root + + for (var i = 0; i < token.length; i++) { + if (!node[token[i]]) return {} + + node = node[token[i]] + } + + return node +} + +/** + * Retrieve the documents for a node for the given token. + * + * By default this function starts at the root of the current store, however + * it can start at any node of any token store if required. + * + * @param {String} token The token to get the documents for. + * @param {Object} root An optional node at which to start. + * @returns {Object} + * @memberOf TokenStore + */ +lunr.TokenStore.prototype.get = function (token, root) { + return this.getNode(token, root).docs || {} +} + +lunr.TokenStore.prototype.count = function (token, root) { + return Object.keys(this.get(token, root)).length +} + +/** + * Remove the document identified by ref from the token in the store. + * + * By default this function starts at the root of the current store, however + * it can start at any node of any token store if required. + * + * @param {String} token The token to get the documents for. + * @param {String} ref The ref of the document to remove from this token. + * @param {Object} root An optional node at which to start. + * @returns {Object} + * @memberOf TokenStore + */ +lunr.TokenStore.prototype.remove = function (token, ref) { + if (!token) return + var node = this.root + + for (var i = 0; i < token.length; i++) { + if (!(token[i] in node)) return + node = node[token[i]] + } + + delete node.docs[ref] +} + +/** + * Find all the possible suffixes of the passed token using tokens + * currently in the store. + * + * @param {String} token The token to expand. + * @returns {Array} + * @memberOf TokenStore + */ +lunr.TokenStore.prototype.expand = function (token, memo) { + var root = this.getNode(token), + docs = root.docs || {}, + memo = memo || [] + + if (Object.keys(docs).length) memo.push(token) + + Object.keys(root) + .forEach(function (key) { + if (key === 'docs') return + + memo.concat(this.expand(token + key, memo)) + }, this) + + return memo +} + +/** + * Returns a representation of the token store ready for serialisation. + * + * @returns {Object} + * @memberOf TokenStore + */ +lunr.TokenStore.prototype.toJSON = function () { + return { + root: this.root, + length: this.length + } +} + + + /** + * export the module via AMD, CommonnJS or as a browser global + * Export code from https://github.com/umdjs/umd/blob/master/returnExports.js + */ + ;(function (root, factory) { + if (typeof define === 'function' && define.amd) { + // AMD. Register as an anonymous module. + define('lunr',factory) + } else if (typeof exports === 'object') { + /** + * Node. Does not work with strict CommonJS, but + * only CommonJS-like enviroments that support module.exports, + * like Node. + */ + module.exports = factory() + } else { + // Browser globals (root is window) + root.lunr = factory() + } + }(this, function () { + /** + * Just return a value to define the module export. + * This example returns an object, but the module + * can return a function as the exported value. + */ + return lunr + })) +})() +; +define('core/search',[ + "jQuery", + "lodash", + "lunr", +], function($, _, lunr) { + var index = null; + + // Load complete index + var loadIndex = function() { + return $.getJSON("search_index.json") + .then(function(data) { + index = lunr.Index.load(data); + }); + }; + + // Search for a term + var search = function(q) { + if (!index) return; + var results = _.chain(index.search(q)) + .map(function(result) { + var parts = result.ref.split("#") + return { + path: parts[0], + hash: parts[1] + } + }) + .value(); + + return results; + }; + + + var init = function() { + loadIndex(); + }; + + return { + init: init, + search: search + }; +}); +define('core/sidebar',[ + "utils/storage", + "utils/platform", + "core/state", + "core/search" +], function(storage, platform, state, search) { + var $summary = state.$book.find(".book-summary"); + var $searchInput = $summary.find(".book-search input") + + + // Toggle sidebar with or withour animation + var toggleSidebar = function(_state, animation) { + if (state != null && isOpen() == _state) return; + if (animation == null) animation = true; + + state.$book.toggleClass("without-animation", !animation); + state.$book.toggleClass("with-summary", _state); + + storage.set("sidebar", isOpen()); + }; + + // Toggle search + var toggleSearch = function(_state) { + if (state != null && isSearchOpen() == _state) return; + + + $summary.toggleClass("with-search", _state); + + // If search bar is open: focus input + if (isSearchOpen()) { + $searchInput.focus(); + } else { + + } + }; + + // Return true if sidebar is open + var isOpen = function() { + return state.$book.hasClass("with-summary"); + }; + + // Return true if search bar is open + var isSearchOpen = function() { + return $summary.hasClass("with-search"); + }; + + // Prepare sidebar: state and toggle button + var init = function() { + // Toggle summary + state.$book.find(".book-header .toggle-summary").click(function(e) { + e.preventDefault(); + toggleSidebar(); + }); + + // Init last state if not mobile + if (!platform.isMobile) { + toggleSidebar(storage.get("sidebar", true), false); + } + + // Toggle search + state.$book.find(".book-header .toggle-search").click(function(e) { + e.preventDefault(); + toggleSearch(); + }); + + $searchInput.keyup(function(e) { + var key = (e.keyCode ? e.keyCode : e.which); + var q = $(this).val(); + + if (key == 27) { + e.preventDefault(); + toggleSearch(false); + return; + } + console.log("search", q); + }); + }; + + return { + init: init, + toggle: toggleSidebar, + toggleSearch: toggleSearch + } +}); +define('core/keyboard',[ + "jQuery", + "Mousetrap", + "core/navigation", + "core/sidebar" +], function($, Mousetrap, navigation, sidebar){ + // Bind keyboard shortcuts + var init = function() { + // Next + Mousetrap.bind(['right'], function(e) { + navigation.goNext(); + return false; + }); + + // Prev + Mousetrap.bind(['left'], function(e) { + navigation.goPrev(); + return false; + }); + + // Toggle Summary + Mousetrap.bind(['s'], function(e) { + sidebar.toggle(); + return false; + }); + + // Toggle Search + Mousetrap.bind(['f'], function(e) { + sidebar.toggleSearch(); + return false; + }); + }; + + return { + init: init + }; +}); +define('execute/javascript',[],function() { + return { + id: "javascript", + assertCode: "function assert(condition, message) { \nif (!condition) { \n throw message || \"Assertion failed\"; \n } \n }\n", + REPL: JSREPL + }; +}); +define('utils/execute',[ + "execute/javascript" +], function(javascript) { + var LANGUAGES = { + "javascript": javascript + }; + + + var evalJS = function(lang, code, callback) { + var ready = false; + var finished = false; + + var finish = function() { + if(finished) { + return console.error('Already finished'); + } + finished = true; + return callback.apply(null, arguments); + }; + + var repl; + + // Handles all our events + var eventHandler = function(data, eventType) { + console.log([eventType, data]); + switch(eventType) { + case 'progress': + // Update UI loading bar + break; + case 'timeout': + finish(new Error(data)); + break; + case 'result': + finish(null, { + value: data, + type: 'result' + }); + break; + case 'error': + if(ready) { + return finish(null, { + value: data, + type: 'error' + }); + } + return finish(new Error(data)); + break + case 'ready': + // We're good to get results and stuff back now + ready = true; + // Eval our code now that the runtime is ready + repl.eval(code); + break; + default: + console.log('Unhandled event =', eventType, 'data =', data); + } + }; + + repl = new lang.REPL({ + input: eventHandler, + output: eventHandler, + result: eventHandler, + error: eventHandler, + progress: eventHandler, + timeout: { + time: 30000, + callback: eventHandler + } + }); + + repl.loadLanguage(lang.id, eventHandler); + }; + + var execute = function(lang, solution, validation, callback) { + // Check language is supported + if (!LANGUAGES[lang]) return callback(new Error("Language '"+lang+"' not available for execution")); + + // Validate with validation code + var code = [solution, LANGUAGES[lang].assertCode, validation].join(";\n"); + evalJS(LANGUAGES[lang], code, function(err, res) { + if(err) return callback(err); + + if (res.type == "error") callback(new Error(res.value)); + else callback(null, res.value); + }); + }; + + return execute; +}); +define('core/exercise',[ + "jQuery", + "utils/execute", + "utils/analytic", + "core/state" +], function($, execute, analytic, state){ + // Bind an exercise + var prepareExercise = function($exercise) { + var codeSolution = $exercise.find(".code-solution").text(); + var codeValidation = $exercise.find(".code-validation").text(); + + var editor = ace.edit($exercise.find(".editor").get(0)); + editor.setTheme("ace/theme/tomorrow"); + editor.getSession().setUseWorker(false); + editor.getSession().setMode("ace/mode/javascript"); + + // Submit: test code + $exercise.find(".action-submit").click(function(e) { + e.preventDefault(); + + analytic.track("exercise.submit"); + + execute("javascript", editor.getValue(), codeValidation, function(err, result) { + $exercise.toggleClass("return-error", err != null); + $exercise.toggleClass("return-success", err == null); + if (err) $exercise.find(".alert-danger").text(err.message || err); + }); + }); + + // Set solution + $exercise.find(".action-solution").click(function(e) { + e.preventDefault(); + + editor.setValue(codeSolution); + editor.gotoLine(0); + }); + }; + + // Prepare all exercise + var init = function() { + state.$book.find("section.exercise").each(function() { + prepareExercise($(this)); + }); + }; + + return { + init: init, + prepare: prepareExercise + }; +}); +define('core/progress',[ + "lodash", + "jQuery", + "utils/storage", + "core/state" +], function(_, $, storage, state) { + // Get current level + var getCurrentLevel = function() { + return state.level; + }; + + // Return all levels + var getLevels = function() { + var levels = $(".book-summary li[data-level]"); + return _.map(levels, function(level) { + return $(level).data("level").toString(); + }); + }; + + // Return a map chapter -> number (timestamp) + var getProgress = function() { + // Current level + var progress = storage.get("progress", {}); + + // Levels + var levels = getLevels(); + + _.each(levels, function(level) { + progress[level] = progress[level] || 0; + }); + + return progress; + }; + + // Change value of progress for a level + var markProgress = function(level, state) { + if (state == null) state = true; + + var progress = getProgress(); + progress[level] = state? Date.now() : 0; + + storage.set("progress", progress); + }; + + // Show progress + var showProgress = function() { + // Update progress + var progress = getProgress(); + var $summary = $(".book-summary"); + + _.each(progress, function(value, level) { + $summary.find("li[data-level='"+level+"']").toggleClass("done", value > 0); + }); + + // Mark current progress + markProgress(getCurrentLevel(), true); + }; + + return { + 'current': getCurrentLevel, + 'levels': getLevels, + 'get': getProgress, + 'mark': markProgress, + 'show': showProgress + }; +}); +require([ + "jQuery", + "utils/storage", + "utils/analytic", + "utils/sharing", + + "core/state", + "core/keyboard", + "core/exercise", + "core/progress", + "core/sidebar", + "core/search" +], function($, storage, analytic, sharing, state, keyboard, exercise, progress, sidebar, search){ + $(document).ready(function() { + var $book = state.$book; + + // Initialize storage + storage.setBaseKey(state.githubId); + + // Init sidebar + sidebar.init(); + + // Load search + search.init(); + + // Init keyboard + keyboard.init(); + + // Star and watch count + $.getJSON("https://api.github.com/repos/"+state.githubId) + .done(function(repo) { + $book.find(".count-star span").text(repo.stargazers_count); + $book.find(".count-watch span").text(repo.subscribers_count); + }); + + // Bind exercise + exercise.init(); + + // Bind sharing button + sharing.init(); + + // Show progress + progress.show(); + + // Focus on content + $(".book-body").focus(); + }); +}); +define("app", function(){}); + diff --git a/theme/javascript/app.js b/theme/javascript/app.js index 11c5d53..34247ca 100644 --- a/theme/javascript/app.js +++ b/theme/javascript/app.js @@ -10,9 +10,8 @@ require([ "core/progress", "core/sidebar", "core/search" -], function($, storage, analytic, sharing, _state, keyboard, exercise, progress, sidebar, search){ +], function($, storage, analytic, sharing, state, keyboard, exercise, progress, sidebar, search){ $(document).ready(function() { - var state = _state(); var $book = state.$book; // Initialize storage diff --git a/theme/javascript/core/exercise.js b/theme/javascript/core/exercise.js index db278b8..f890f2a 100644 --- a/theme/javascript/core/exercise.js +++ b/theme/javascript/core/exercise.js @@ -38,7 +38,7 @@ define([ // Prepare all exercise var init = function() { - state().$book.find("section.exercise").each(function() { + state.$book.find("section.exercise").each(function() { prepareExercise($(this)); }); }; diff --git a/theme/javascript/core/progress.js b/theme/javascript/core/progress.js index 755f111..d074cae 100644 --- a/theme/javascript/core/progress.js +++ b/theme/javascript/core/progress.js @@ -6,7 +6,7 @@ define([ ], function(_, $, storage, state) { // Get current level var getCurrentLevel = function() { - return state().level; + return state.level; }; // Return all levels diff --git a/theme/javascript/core/sidebar.js b/theme/javascript/core/sidebar.js index 27a0abd..88ab639 100644 --- a/theme/javascript/core/sidebar.js +++ b/theme/javascript/core/sidebar.js @@ -4,15 +4,17 @@ define([ "core/state", "core/search" ], function(storage, platform, state, search) { + var $summary = state.$book.find(".book-summary"); + var $searchInput = $summary.find(".book-search input") + // Toggle sidebar with or withour animation var toggleSidebar = function(_state, animation) { if (state != null && isOpen() == _state) return; if (animation == null) animation = true; - var $book = state().$book; - $book.toggleClass("without-animation", !animation); - $book.toggleClass("with-summary", _state); + state.$book.toggleClass("without-animation", !animation); + state.$book.toggleClass("with-summary", _state); storage.set("sidebar", isOpen()); }; @@ -21,29 +23,31 @@ define([ var toggleSearch = function(_state) { if (state != null && isSearchOpen() == _state) return; - var $summary = state().$book.find(".book-summary"); + $summary.toggleClass("with-search", _state); // If search bar is open: focus input - if (isSearchOpen()) $summary.find(".book-search input").focus(); + if (isSearchOpen()) { + $searchInput.focus(); + } else { + + } }; // Return true if sidebar is open var isOpen = function() { - return state().$book.hasClass("with-summary"); + return state.$book.hasClass("with-summary"); }; // Return true if search bar is open var isSearchOpen = function() { - return state().$book.find(".book-summary").hasClass("with-search"); + return $summary.hasClass("with-search"); }; // Prepare sidebar: state and toggle button var init = function() { - var $book = state().$book; - // Toggle summary - $book.find(".book-header .toggle-summary").click(function(e) { + state.$book.find(".book-header .toggle-summary").click(function(e) { e.preventDefault(); toggleSidebar(); }); @@ -54,12 +58,12 @@ define([ } // Toggle search - $book.find(".book-header .toggle-search").click(function(e) { + state.$book.find(".book-header .toggle-search").click(function(e) { e.preventDefault(); toggleSearch(); }); - $book.find(".book-summary .book-search input").keyup(function(e) { + $searchInput.keyup(function(e) { var key = (e.keyCode ? e.keyCode : e.which); var q = $(this).val(); diff --git a/theme/javascript/core/state.js b/theme/javascript/core/state.js index fc67d7b..b219f5d 100644 --- a/theme/javascript/core/state.js +++ b/theme/javascript/core/state.js @@ -1,14 +1,12 @@ define([ "jQuery" ], function() { - return function() { - var $book = $(".book"); + var $book = $(".book"); - return { - '$book': $book, + return { + '$book': $book, - 'githubId': $book.data("github"), - 'level': $book.data("level") - }; + 'githubId': $book.data("github"), + 'level': $book.data("level") }; });
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