/*
* 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) {

        var iframe = $(this);
        iframe.unbind("load");
        if (timer) clearTimeout(timer);

        var defaults = {
            timeout: 0,
            onTimeout: null,
            onReady: null,
            scriptRequest: false
        }
        var opts = $.extend(defaults, options);

        if (opts.scriptRequest) {
            scriptRequest(iframe, url, onLoad, options);
            return;
        }

        opts.frameactive = true;
        var startTime = (new Date()).getTime();
        if (opts.timeout) {
            var timer = setTimeout(function() {
                opts.frameactive = false;
                iframe.load(null);
                if (opts.onTimeout) opts.onTimeout(iframe.get(0), opts.timeout);
            }, opts.timeout);
        }
        if (opts.onReady) {
            iframe.unbind("ready");
            iframe.ready(function() {
                if (opts.frameactive) {
                    var duration = (new Date()).getTime() - startTime;
                    opts.onReady(this, duration);
                }
            });
        }

        var onloadHandler = function() {
            var duration = (new Date()).getTime() - startTime;
            if (timer) clearTimeout(timer);
            if (onLoad && opts.frameactive) onLoad(this, duration);
            opts.frameactive = false;
        }
        iframe.attr("src", url);
        iframe.get()[0].onload = onloadHandler;
        opts.completeReadyStateChanges = 0;
        iframe.get()[0].onreadystatechange = function() { // IE ftw
            if (++(opts.completeReadyStateChanges) == 3) onloadHandler();
        }

        function scriptRequest(iframe, url, onLoad, opts) {
            content = "<h3>Hello</h3>";
            var iframeEl = $(iframe).get()[0];
            var doc = iframeEl.contentDocument || iframeEl.contentWindow.document;
            doc.open();
            doc.writeln(content);
            doc.close();
        }

    }
})(jQuery);