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1 /*
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2 * jQuery postMessage Transport Plugin 1.1
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3 * https://github.com/blueimp/jQuery-File-Upload
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4 *
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5 * Copyright 2011, Sebastian Tschan
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6 * https://blueimp.net
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7 *
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8 * Licensed under the MIT license:
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9 * http://www.opensource.org/licenses/MIT
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10 */
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11
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12 /*jslint unparam: true, nomen: true */
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13 /*global define, window, document */
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14
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15 (function (factory) {
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16 'use strict';
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17 if (typeof define === 'function' && define.amd) {
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18 // Register as an anonymous AMD module:
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19 define(['jquery'], factory);
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20 } else {
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21 // Browser globals:
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22 factory(window.jQuery);
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23 }
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24 }(function ($) {
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25 'use strict';
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26
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27 var counter = 0,
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28 names = [
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29 'accepts',
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30 'cache',
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31 'contents',
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32 'contentType',
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33 'crossDomain',
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34 'data',
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35 'dataType',
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36 'headers',
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37 'ifModified',
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38 'mimeType',
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39 'password',
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40 'processData',
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41 'timeout',
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42 'traditional',
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43 'type',
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44 'url',
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45 'username'
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46 ],
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47 convert = function (p) {
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48 return p;
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49 };
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50
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51 $.ajaxSetup({
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52 converters: {
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53 'postmessage text': convert,
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54 'postmessage json': convert,
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55 'postmessage html': convert
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56 }
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57 });
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58
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59 $.ajaxTransport('postmessage', function (options) {
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60 if (options.postMessage && window.postMessage) {
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61 var iframe,
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62 loc = $('<a>').prop('href', options.postMessage)[0],
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63 target = loc.protocol + '//' + loc.host,
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64 xhrUpload = options.xhr().upload;
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65 return {
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66 send: function (_, completeCallback) {
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67 var message = {
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68 id: 'postmessage-transport-' + (counter += 1)
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69 },
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70 eventName = 'message.' + message.id;
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71 iframe = $(
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72 '<iframe style="display:none;" src="' +
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73 options.postMessage + '" name="' +
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74 message.id + '"></iframe>'
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75 ).bind('load', function () {
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76 $.each(names, function (i, name) {
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77 message[name] = options[name];
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78 });
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79 message.dataType = message.dataType.replace('postmessage ', '');
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80 $(window).bind(eventName, function (e) {
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81 e = e.originalEvent;
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82 var data = e.data,
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83 ev;
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84 if (e.origin === target && data.id === message.id) {
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85 if (data.type === 'progress') {
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86 ev = document.createEvent('Event');
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87 ev.initEvent(data.type, false, true);
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88 $.extend(ev, data);
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89 xhrUpload.dispatchEvent(ev);
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90 } else {
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91 completeCallback(
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92 data.status,
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93 data.statusText,
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94 {postmessage: data.result},
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95 data.headers
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96 );
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97 iframe.remove();
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98 $(window).unbind(eventName);
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99 }
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100 }
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101 });
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102 iframe[0].contentWindow.postMessage(
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103 message,
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104 target
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105 );
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106 }).appendTo(document.body);
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107 },
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108 abort: function () {
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109 if (iframe) {
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110 iframe.remove();
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111 }
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112 }
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113 };
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114 }
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115 });
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116
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117 }));
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