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/*
* Ignatius Steven
* Created: Tue, 14 Jan 2014 - 5:18:02 PM
* Last update: Wed, 26 Mar 2014 - 11:12:29 AM
*
* Angular JS Multi Select
* Creates a dropdown-like button with checkboxes.
*
* --------------------------------------------------------------------------------
* MIT License
*
* Copyright (C) 2014 Ignatius Steven
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* --------------------------------------------------------------------------------
*/
angular.module( 'multi-select', ['ng'] ).directive( 'multiSelect' , [ '$timeout', '$compile' , function ( $timeout, $compile ) {
return {
restrict:
'AE',
replace:
true,
scope:
{
inputModel : '=',
outputModel : '=',
itemLabel : '@',
itemTicker : '@',
orientation : '@',
maxLabels : '@',
maxHeight : '@',
isDisabled : '='
},
template:
'<span class="multiSelect inlineBlock">' +
'<button type="button" class="multiSelect button multiSelectButton" ng-click="toggleCheckboxes( $event ); refreshSelectedItems();">' +
'<div ng-if="selectedItems.length <= 0">None selected</div>' +
'<div ng-if="selectedItems.length > 0" ng-repeat="item in selectedItems | limitTo: varMaxLabels">' +
'<span ng-if="$index > 0">, </span>{{writeLabel( item )}}' +
'</div>' +
'<div ng-if="more">, ... [ Selected: {{selectedItems.length}} ]</div><span class="caret"></span>' +
'</button>' +
'<div class="multiSelect checkboxLayer hide" style="{{layerStyle}}">' +
'<div class="multiSelect line">' +
'Select: ' +
'<button type="button" ng-click="select( \'all\' )" class="multiSelect helperButton" >All</button> ' +
'<button type="button" ng-click="select( \'none\' )" class="multiSelect helperButton" >None</button> ' +
'<button type="button" ng-click="select( \'reset\' )" class="multiSelect helperButton" >Reset</button>' +
'</div>' +
'<div class="multiSelect line">' +
'Filter: <input class="multiSelect" type="text" ng-model="labelFilter" />' +
'<button type="button" class="multiSelect helperButton" ng-click="labelFilter=\'\'">Clear</button>' +
'</div>' +
'<div ng-repeat="item in inputModel | filter:labelFilter" ng-class="orientation" class="multiSelect multiSelectItem">' +
'<label class="multiSelect" ng-class="{checkboxSelected:item[ itemSelector ]}">' +
'<input class="multiSelect" type="checkbox" ng-disabled="isDisabled" ng-checked="item[ itemSelector ]" ng-click="syncItems( item )" />' +
'{{writeLabel( item )}}' +
'</label> ' +
'</div>' +
'</div>' +
'</span>',
link: function ( $scope, element, attrs ) {
$scope.selectedItems = [];
$scope.backUp = [];
$scope.layerStyle = '';
$scope.varMaxLabels = 0;
// Checkbox is ticked
$scope.syncItems = function( item ) {
item[ $scope.itemSelector ] = !item[ $scope.itemSelector ];
$scope.refreshSelectedItems();
}
// Refresh the button to display the selected items and push into output model if specified
$scope.refreshSelectedItems = function() {
$scope.selectedItems = [];
angular.forEach( $scope.inputModel, function( value, key ) {
if ( value[ $scope.itemSelector ] === true || value[ $scope.itemSelector ] === 'true' ) {
$scope.selectedItems.push( value );
}
});
// Push into output model
if ( typeof attrs.outputModel !== 'undefined' ) {
$scope.outputModel = angular.copy( $scope.selectedItems );
}
// If max amount of labels displayed..
if ( $scope.selectedItems.length > $scope.maxLabels ) {
$scope.more = true;
}
else {
$scope.more = false;
}
if ( typeof $scope.maxLabels === 'undefined' ) {
$scope.varMaxLabels = $scope.selectedItems.length;
}
else {
$scope.varMaxLabels = $scope.maxLabels;
}
}
// UI operations to show/hide checkboxes
$scope.toggleCheckboxes = function( e ) {
$scope.labelFilter = '';
// We search them based on the class names
var multiSelectIndex = -1;
var checkboxes = document.querySelectorAll( '.checkboxLayer' );
var multiSelectButtons = document.querySelectorAll( '.multiSelectButton' );
for( i=0; i < multiSelectButtons.length; i++ ) {
if ( e.target == multiSelectButtons[ i ] ) {
multiSelectIndex = i;
break;
}
}
for( i=0; i < checkboxes.length; i++ ) {
if ( i != multiSelectIndex ) {
checkboxes[i].className = 'multiSelect checkboxLayer hide';
}
}
if ( checkboxes[ multiSelectIndex ].className == 'multiSelect checkboxLayer hide' ) {
checkboxes[ multiSelectIndex ].className = 'multiSelect checkboxLayer show';
}
else if ( checkboxes[ multiSelectIndex ].className == 'multiSelect checkboxLayer show' ) {
checkboxes[ multiSelectIndex ].className = 'multiSelect checkboxLayer hide';
}
}
// Select All / None / Reset
$scope.select = function( type ) {
switch( type.toUpperCase() ) {
case 'ALL':
angular.forEach( $scope.inputModel, function( value, key ) {
value[ $scope.itemSelector ] = true;
});
break;
case 'NONE':
angular.forEach( $scope.inputModel, function( value, key ) {
value[ $scope.itemSelector ] = false;
});
break;
case 'RESET':
$scope.inputModel = angular.copy( $scope.backUp );
break;
default:
}
$scope.refreshSelectedItems();
}
// What's written on the button
$scope.writeLabel= function( item ) {
var label = '';
var temp = $scope.itemLabel.split( ' ' );
angular.forEach( temp, function( value2, key2 ) {
angular.forEach( item, function( value1, key1 ) {
if ( key1 == value2 ) {
label += ' ' + value1;
}
});
});
return label;
}
/////////////////////
// Logic starts here
/////////////////////
$scope.itemSelector = ( typeof $scope.itemTicker === 'string' ? $scope.itemTicker : 'selected' );
$scope.refreshSelectedItems();
// Watch for changes in input model (allow dynamic input)
$scope.$watch( 'inputModel' , function( newVal ) {
$scope.refreshSelectedItems();
$scope.backUp = angular.copy( $scope.inputModel );
});
// Watch for changes in directive state (disabled or enabled)
$scope.$watch( 'isDisabled' , function( newVal ) {
$scope.isDisabled = newVal;
});
// Checkbox height
if ( typeof $scope.maxHeight !== 'undefined' ) {
$scope.layerStyle = 'max-height:' + $scope.maxHeight + 'px; overflow: auto; min-width: auto';
}
// Monitor for clicks outside the button element to hide the checkboxes
angular.element( document ).bind( 'click' , function( e ) {
var checkboxes = document.querySelectorAll( '.checkboxLayer' );
if ( e.target.className.indexOf( 'multiSelect' ) === -1 ) {
for( i=0; i < checkboxes.length; i++ ) {
checkboxes[i].className = 'multiSelect checkboxLayer hide';
}
$scope.$apply();
e.stopPropagation();
}
});
}
}
}]);
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