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Revision Autor Zeilennr. Zeile
24 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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 * https://opensource.org/licenses/MIT
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 */
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/* global define, require */
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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 = $('<a></a>').prop('href', options.postMessage)[0],
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        target = loc.protocol + '//' + loc.host,
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        xhrUpload = options.xhr().upload;
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      // IE always includes the port for the host property of a link
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      // element, but not in the location.host or origin property for the
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      // default http port 80 and https port 443, so we strip it:
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      if (/^(http:\/\/.+:80)|(https:\/\/.+:443)$/.test(target)) {
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        target = target.replace(/:(80|443)$/, '');
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      }
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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 +
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              '" name="' +
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              message.id +
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              '"></iframe>'
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          )
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            .on('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).on(eventName, function (event) {
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                var e = event.originalEvent;
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                var data = e.data;
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                var 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).off(eventName);
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                  }
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                }
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              });
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              iframe[0].contentWindow.postMessage(message, 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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});