Blame view

assets/js/cors/jquery.postmessage-transport.js 4.12 KB
e10587b1   Yarik   first commit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
  /*

   * jQuery postMessage Transport Plugin

   * https://github.com/blueimp/jQuery-File-Upload

   *

   * Copyright 2011, Sebastian Tschan

   * https://blueimp.net

   *

   * Licensed under the MIT license:

   * http://www.opensource.org/licenses/MIT

   */

  

  /* global define, require, window, document */

  

  (function (factory) {

      'use strict';

      if (typeof define === 'function' && define.amd) {

          // Register as an anonymous AMD module:

          define(['jquery'], factory);

      } else if (typeof exports === 'object') {

          // Node/CommonJS:

          factory(require('jquery'));

      } else {

          // Browser globals:

          factory(window.jQuery);

      }

  }(function ($) {

      'use strict';

  

      var counter = 0,

          names = [

              'accepts',

              'cache',

              'contents',

              'contentType',

              'crossDomain',

              'data',

              'dataType',

              'headers',

              'ifModified',

              'mimeType',

              'password',

              'processData',

              'timeout',

              'traditional',

              'type',

              'url',

              'username'

          ],

          convert = function (p) {

              return p;

          };

  

      $.ajaxSetup({

          converters: {

              'postmessage text': convert,

              'postmessage json': convert,

              'postmessage html': convert

          }

      });

  

      $.ajaxTransport('postmessage', function (options) {

          if (options.postMessage && window.postMessage) {

              var iframe,

                  loc = $('<a>').prop('href', options.postMessage)[0],

                  target = loc.protocol + '//' + loc.host,

                  xhrUpload = options.xhr().upload;

              return {

                  send: function (_, completeCallback) {

                      counter += 1;

                      var message = {

                              id: 'postmessage-transport-' + counter

                          },

                          eventName = 'message.' + message.id;

                      iframe = $(

                          '<iframe style="display:none;" src="' +

                              options.postMessage + '" name="' +

                              message.id + '"></iframe>'

                      ).bind('load', function () {

                          $.each(names, function (i, name) {

                              message[name] = options[name];

                          });

                          message.dataType = message.dataType.replace('postmessage ', '');

                          $(window).bind(eventName, function (e) {

                              e = e.originalEvent;

                              var data = e.data,

                                  ev;

                              if (e.origin === target && data.id === message.id) {

                                  if (data.type === 'progress') {

                                      ev = document.createEvent('Event');

                                      ev.initEvent(data.type, false, true);

                                      $.extend(ev, data);

                                      xhrUpload.dispatchEvent(ev);

                                  } else {

                                      completeCallback(

                                          data.status,

                                          data.statusText,

                                          {postmessage: data.result},

                                          data.headers

                                      );

                                      iframe.remove();

                                      $(window).unbind(eventName);

                                  }

                              }

                          });

                          iframe[0].contentWindow.postMessage(

                              message,

                              target

                          );

                      }).appendTo(document.body);

                  },

                  abort: function () {

                      if (iframe) {

                          iframe.remove();

                      }

                  }

              };

          }

      });

  

  }));