/** @language english
 * The URLLoader class downloads data from a URL as text, binary data, or URL-encoded variables. When you download a text data, can not be run on the local environment.
 * @class LURLLoader
 * @extends LEventDispatcher
 * @constructor
 * @since 1.0.0
 * @public
 */
var LURLLoader = (function () {
	function LURLLoader () {
		var s = this;
		LExtends(s, LEventDispatcher, []);
		s.type = "LURLLoader";
		s.loadtype = "";
		s.content = null;
		s.event = {};
	}
	LURLLoader.TYPE_TEXT = "text";
	LURLLoader.TYPE_JS = "js";
	/** @language english
	 * Sends and loads data from the specified URL.
	 * @method load
	 * @param {String} url The URL to be requested.
	 * @param {String} type file type，Currently supports "text","js".
	 * @example
	 * 	LInit(1000/50,"legend",800,450,main);
	 * 	var loader;
	 * 	function main(){
	 * 		LGlobal.setDebug(true);
	 * 		loader = new LURLLoader();
	 * 		loader.addEventListener(LEvent.COMPLETE, loadTxt); 
	 * 		loader.load("test.txt", "text");
	 * 	}
	 * 	function loadTxt (event) {
	 * 		trace(loader.objectIndex == event.currentTarget.objectIndex);//true
	 * 		trace(event.currentTarget.data == event.target);//true
	 * 		trace("event.target = " + event.target);
	 * 	}
	 * @examplelink <p><a href="../../../api/LURLLoader/index.html" target="_blank">Try it »</a></p>
	 * @public
	 * @since 1.0.0
	 */
	LURLLoader.prototype.load = function (u, t) {
		var s = this, event, ext;
		if (!t) {
			ext = getExtension(u);
			if (ext == "txt") {
				t = LURLLoader.TYPE_TEXT;
			} else if (ext == "js") {
				t = LURLLoader.TYPE_JS;
			}
		}
		s.loadtype = t;
		if (t == LURLLoader.TYPE_TEXT) {
			LAjax.get(u, {}, function (data) {
				event = new LEvent(LEvent.COMPLETE);
				s.data = data;
				event.currentTarget = s;
				event.target = data;
				s.dispatchEvent(event);
				delete s.content;
				delete s.data;
			});
		} else if (t == LURLLoader.TYPE_JS) {
			var script = document.createElement("script");
			script.onload = function () {
				event = new LEvent(LEvent.COMPLETE);
				event.currentTarget = s;
				event.target = s;
				s.dispatchEvent(event);
				delete s.content;
			};
			script.src = u;
			script.type = "text/javascript";
			document.querySelector('head').appendChild(script);
		}
	};
	return LURLLoader;
})();
/** @language english
 * when the text file or js file is loaded.
 * <p><a href="LEvent.html#property_COMPLETE">LEvent.COMPLETE</a></p>
 * @event LEvent.COMPLETE
 */