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123 lines
2.4 KiB
JavaScript
123 lines
2.4 KiB
JavaScript
5 years ago
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(function() {
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var sh = SyntaxHighlighter;
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/**
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* Provides functionality to dynamically load only the brushes that a needed to render the current page.
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*
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* There are two syntaxes that autoload understands. For example:
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*
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* SyntaxHighlighter.autoloader(
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* [ 'applescript', 'Scripts/shBrushAppleScript.js' ],
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* [ 'actionscript3', 'as3', 'Scripts/shBrushAS3.js' ]
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* );
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*
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* or a more easily comprehendable one:
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*
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* SyntaxHighlighter.autoloader(
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* 'applescript Scripts/shBrushAppleScript.js',
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* 'actionscript3 as3 Scripts/shBrushAS3.js'
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* );
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*/
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sh.autoloader = function()
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{
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var list = arguments,
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elements = sh.findElements(),
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brushes = {},
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scripts = {},
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all = SyntaxHighlighter.all,
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allCalled = false,
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allParams = null,
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i
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;
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SyntaxHighlighter.all = function(params)
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{
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allParams = params;
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allCalled = true;
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};
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function addBrush(aliases, url)
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{
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for (var i = 0; i < aliases.length; i++)
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brushes[aliases[i]] = url;
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};
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function getAliases(item)
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{
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return item.pop
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? item
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: item.split(/\s+/)
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;
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}
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// create table of aliases and script urls
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for (i = 0; i < list.length; i++)
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{
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var aliases = getAliases(list[i]),
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url = aliases.pop()
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;
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addBrush(aliases, url);
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}
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// dynamically add <script /> tags to the document body
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for (i = 0; i < elements.length; i++)
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{
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var url = brushes[elements[i].params.brush];
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if(url && scripts[url] === undefined)
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{
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if(elements[i].params['html-script'] === 'true')
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{
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if(scripts[brushes['xml']] === undefined) {
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loadScript(brushes['xml']);
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scripts[url] = false;
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}
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}
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scripts[url] = false;
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loadScript(url);
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}
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}
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function loadScript(url)
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{
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var script = document.createElement('script'),
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done = false
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;
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script.src = url;
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script.type = 'text/javascript';
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script.language = 'javascript';
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script.onload = script.onreadystatechange = function()
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{
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if (!done && (!this.readyState || this.readyState == 'loaded' || this.readyState == 'complete'))
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{
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done = true;
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scripts[url] = true;
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checkAll();
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// Handle memory leak in IE
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script.onload = script.onreadystatechange = null;
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script.parentNode.removeChild(script);
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}
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};
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// sync way of adding script tags to the page
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document.body.appendChild(script);
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};
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function checkAll()
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{
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for(var url in scripts)
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if (scripts[url] == false)
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return;
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if (allCalled)
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SyntaxHighlighter.highlight(allParams);
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};
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};
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})();
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