/*
 * IFrame Loader Plugin for JQuery
 * - Notifies your event handler when iframe has finished loading
 * - Your event handler receives loading duration (as well as iframe)
 * - Optionally calls your timeout handler
 *
 * http://project.ajaxpatterns.org/jquery-iframe
 *
 * The MIT License
 *
 * Copyright (c) 2009, Michael Mahemoff
 *
 * 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.
 */
(function ($) {
	var timer;
	$.fn.src = function (url, onLoad, options) {
		setIFrames($(this), onLoad, options, function () {
			this.src = url;
		});
		return $(this);
	}
	$.fn.squirt = function (content, onLoad, options) {
		setIFrames($(this), onLoad, options, function () {
			var doc = this.contentDocument || this.contentWindow.document;
			doc.open();
			doc.writeln(content);
			doc.close();
		});
		return this;
	}
	function setIFrames(iframes, onLoad, options, iFrameSetter) {
		iframes.each(function () {
			if (this.tagName == "IFRAME") setIFrame(this, onLoad, options, iFrameSetter);
		});
	}
	function setIFrame(iframe, onLoad, options, iFrameSetter) {
		var iframe;
		iframe.onload = null;
		if (timer) clearTimeout(timer);
		var defaults = {
			timeoutDuration: 0,
			timeout: null
		}
		var opts = $.extend(defaults, options);
		if (opts.timeout && !opts.timeoutDuration) opts.timeoutDuration = 60000;
		opts.frameactive = true;
		var startTime = (new Date()).getTime();
		if (opts.timeout) {
			var timer = setTimeout(function () {
				opts.frameactive = false;
				iframe.onload = null;
				if (opts.timeout) opts.timeout(iframe, opts.timeout);
			}, opts.timeoutDuration);
		};
		var onloadHandler = function () {
			var duration = (new Date()).getTime() - startTime;
			if (timer) clearTimeout(timer);
			if (onLoad && opts.frameactive) onLoad.apply(iframe, [duration]);
			opts.frameactive = false;
		}
		iFrameSetter.apply(iframe);
		iframe.onload = onloadHandler;
		opts.completeReadyStateChanges = 0;
		iframe.onreadystatechange = function () { // IE ftw
			if (++(opts.completeReadyStateChanges) == 3) onloadHandler();
		}
		return iframe;
	};
})(jQuery);