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FD31.plugin("script", function($) {
/**
* jquery.script
* Script injection utility built on top $.Deferred() backbone.
* https://github.com/jstonne/jquery.script
*
* Copyright (c) 2012 Jensen Tonne
* www.jstonne.com
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
*/
$.script = (function(){
var self = function(options) {
if (options===undefined) {
return;
}
if (typeof options==="string") {
options = {
url: options
}
}
var script = new Script(options);
return script;
};
var Script = function(options) {
var script = $.extend(this, options);
script.manager = $.Deferred();
$.extend(script, script.manager.promise());
script.load();
};
var head = document.getElementsByTagName("head")[0],
baseElement = document.getElementsByTagName("base")[0];
$.extend(Script.prototype, {
timeout: 7000,
retry: 3,
retryCount: 1,
type: "text/javascript",
async: false,
charset: "UTF-8",
verbose: false,
insert: function() {
var node = this.node;
head.appendChild(node);
},
remove: function() {
var node = this.node;
// This prevents IE7-8 locking up.
setTimeout(function(){
// Handle memory leak in IE
node.onload = node.onerror = node.onreadystatechange = null;
try {
head.removeChild(node);
} catch(e) {};
}, 1000);
},
load: function() {
var script = this,
node;
script.endTime = undefined;
script.startTime = new Date();
script.node = node = document.createElement('script');
script.insert();
// Create a reference to these proxied functions,
// so that we can detach them from event listeners.
script._ready = $.proxy(script.ready, script);
script._error = $.proxy(script.error, script);
// On IE9, addEventListener() does not necessary fire the onload event after
// the script is loaded, attachEvent() method behaves correctly.
if (node.attachEvent && !$.browser.opera) {
node.attachEvent("onreadystatechange", script._ready);
node.attachEvent("onerror" , script._error); // IE9 only.
} else {
node.addEventListener("load" , script._ready, false);
node.addEventListener("error" , script._error, false);
}
$(node).attr({
type : script.type,
async : script.async,
charset : script.charset,
src : script.url
});
script.monitor();
},
monitor: function() {
var script = this;
if (script.retryCount > script.retry) {
script._error();
return;
}
setTimeout(function() {
if (script.state()!=="resolved") {
if (script.verbose) {
console.warn('$.script: Load timeout. [Retry: ' + script.retryCount + ']', script);
}
script.remove();
script.retryCount++;
script.load();
}
}, script.timeout * script.retryCount);
},
ready: function(event) {
var script = this,
node = script.node;
// if (script.verbose) {
// console.info('$.script: Loaded' + (($.browser.msie) ? ' ' + script.url.replace($.scriptPath, '') + ' ': ''), script);
// }
if (event.type==="load" || /loaded|complete/.test(node.readyState)) {
script.complete.call(script, event);
script.manager.resolve(script);
}
},
error: function(event) {
var script = this;
if (script.verbose) {
console.error('$.script: Unable to load ', script);
}
script.complete.call(script, event);
script.remove();
script.manager.reject(script);
},
complete: function(event) {
var script = this,
node = script.node;
script.endTime = new Date();
if (node.detachEvent && !$.browser.opera) {
node.detachEvent("onreadystatechange", script._ready);
node.detachEvent("onerror" , script._error);
} else {
node.removeEventListener("load" , script._ready, false);
node.removeEventListener("error" , script._error, false);
}
}
});
return self;
})();
});