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Revision Autor Zeilennr. Zeile
5 lars 1 
/*
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 * jQuery postMessage Transport Plugin
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 * https://github.com/blueimp/jQuery-File-Upload
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 *
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 * Copyright 2011, Sebastian Tschan
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 * https://blueimp.net
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 *
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 * Licensed under the MIT license:
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 * http://www.opensource.org/licenses/MIT
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 */
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/* global define, require, window, document */
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(function (factory) {
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    'use strict';
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    if (typeof define === 'function' && define.amd) {
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        // Register as an anonymous AMD module:
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        define(['jquery'], factory);
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    } else if (typeof exports === 'object') {
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        // Node/CommonJS:
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        factory(require('jquery'));
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    } else {
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        // Browser globals:
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        factory(window.jQuery);
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    }
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}(function ($) {
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    'use strict';
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    var counter = 0,
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        names = [
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            'accepts',
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            'cache',
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            'contents',
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            'contentType',
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            'crossDomain',
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            'data',
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            'dataType',
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            'headers',
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            'ifModified',
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            'mimeType',
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            'password',
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            'processData',
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            'timeout',
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            'traditional',
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            'type',
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            'url',
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            'username'
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        ],
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        convert = function (p) {
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            return p;
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        };
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    $.ajaxSetup({
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        converters: {
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            'postmessage text': convert,
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            'postmessage json': convert,
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            'postmessage html': convert
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        }
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    });
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    $.ajaxTransport('postmessage', function (options) {
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        if (options.postMessage && window.postMessage) {
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            var iframe,
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                loc = $('<a>').prop('href', options.postMessage)[0],
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                target = loc.protocol + '//' + loc.host,
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                xhrUpload = options.xhr().upload;
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            return {
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                send: function (_, completeCallback) {
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                    counter += 1;
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                    var message = {
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                            id: 'postmessage-transport-' + counter
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                        },
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                        eventName = 'message.' + message.id;
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                    iframe = $(
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                        '<iframe style="display:none;" src="' +
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                            options.postMessage + '" name="' +
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                            message.id + '"></iframe>'
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                    ).bind('load', function () {
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                        $.each(names, function (i, name) {
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                            message[name] = options[name];
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                        });
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                        message.dataType = message.dataType.replace('postmessage ', '');
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                        $(window).bind(eventName, function (e) {
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                            e = e.originalEvent;
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                            var data = e.data,
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                                ev;
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                            if (e.origin === target && data.id === message.id) {
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                                if (data.type === 'progress') {
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                                    ev = document.createEvent('Event');
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                                    ev.initEvent(data.type, false, true);
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                                    $.extend(ev, data);
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                                    xhrUpload.dispatchEvent(ev);
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                                } else {
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                                    completeCallback(
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                                        data.status,
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                                        data.statusText,
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                                        {postmessage: data.result},
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                                        data.headers
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                                    );
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                                    iframe.remove();
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                                    $(window).unbind(eventName);
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                                }
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                            }
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                        });
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                        iframe[0].contentWindow.postMessage(
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                            message,
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                            target
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                        );
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                    }).appendTo(document.body);
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                },
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                abort: function () {
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                    if (iframe) {
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                        iframe.remove();
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                    }
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                }
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            };
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        }
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    });
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}));