xp-dev.com Git - namibia/blob - public/scripts/blueimp-jQuery-File-Upload/js/cors/jquery.postmessage-transport.js

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