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define([
"jQuery",
"lodash",
"core/state"
], function($, _, state) {
var index = null;
// Use a specific idnex
var useIndex = function(data) {
index = data;
};
// Load complete index
var loadIndex = function() {
return $.getJSON(state.basePath+"/glossary_index.json")
.then(useIndex);
};
// Get index and return a promise
var getIndex = function() {
var d = $.Deferred();
if (index) {
d.resolve(index);
} else {
loadIndex().done(function(){
d.resolve(index);
}).fail(d.reject);
}
return d.promise();
}
$.fn.replaceText = function( search, replace, text_only ) {
return this.each(function(){
var node = this.firstChild,
val,
new_val,
// Elements to be removed at the end.
remove = [];
// Only continue if firstChild exists.
if ( node ) {
// Loop over all childNodes.
do {
// Only process text nodes.
if ( node.nodeType === 3 ) {
// The original node value.
val = node.nodeValue;
// The new value.
new_val = val.replace( search, replace );
// Only replace text if the new value is actually different!
if ( new_val !== val ) {
if ( !text_only && /</.test( new_val ) ) {
// The new value contains HTML, set it in a slower but far more
// robust way.
$(node).before( new_val );
// Don't remove the node yet, or the loop will lose its place.
remove.push( node );
} else {
// The new value contains no HTML, so it can be set in this
// very fast, simple way.
node.nodeValue = new_val;
}
}
}
} while ( node = node.nextSibling );
}
// Time to remove those elements!
remove.length && $(remove).remove();
});
};
var pregQuote = function( str ) {
return (str+'').replace(/([\\\.\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:])/g, "\\$1");
};
var init = function() {
// Bind click on glossary item
$(document).on("click", ".book-body .page-wrapper .page-inner .glossary-term", function(e) {
e.preventDefault();
location.href = state.basePath+"/GLOSSARY.html#"+$(e.currentTarget).data("glossary-term");
});
};
var replaceTerm = function($el, term) {
var r = new RegExp( "\\b(" + pregQuote(term.name.toLowerCase()) + ")\\b" , 'gi' );
$el.find("*").replaceText(r, function(match) {
return "<span class='glossary-term' data-glossary-term='"+term.id+"' title='"+term.description+"'>"+match+"</span>";
});
};
var prepare = function() {
getIndex()
.done(function() {
_.each(index, _.partial(replaceTerm, $(".book-body .page-wrapper .page-inner")));
});
};
return {
init: init,
prepare: prepare
};
});
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