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bower_components/blueimp-file-upload/js/cors/jquery.xdr-transport.js 3.34 KB
f6e211e4   Administrator   finish work part 1
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  /*
   * jQuery XDomainRequest 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
   *
   * Based on Julian Aubourg's ajaxHooks xdr.js:
   * https://github.com/jaubourg/ajaxHooks/
   */
  
  /* global define, require, window, XDomainRequest */
  
  (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 ($) {
      'use strict';
      if (window.XDomainRequest && !$.support.cors) {
          $.ajaxTransport(function (s) {
              if (s.crossDomain && s.async) {
                  if (s.timeout) {
                      s.xdrTimeout = s.timeout;
                      delete s.timeout;
                  }
                  var xdr;
                  return {
                      send: function (headers, completeCallback) {
                          var addParamChar = /\?/.test(s.url) ? '&' : '?';
                          function callback(status, statusText, responses, responseHeaders) {
                              xdr.onload = xdr.onerror = xdr.ontimeout = $.noop;
                              xdr = null;
                              completeCallback(status, statusText, responses, responseHeaders);
                          }
                          xdr = new XDomainRequest();
                          // XDomainRequest only supports GET and POST:
                          if (s.type === 'DELETE') {
                              s.url = s.url + addParamChar + '_method=DELETE';
                              s.type = 'POST';
                          } else if (s.type === 'PUT') {
                              s.url = s.url + addParamChar + '_method=PUT';
                              s.type = 'POST';
                          } else if (s.type === 'PATCH') {
                              s.url = s.url + addParamChar + '_method=PATCH';
                              s.type = 'POST';
                          }
                          xdr.open(s.type, s.url);
                          xdr.onload = function () {
                              callback(
                                  200,
                                  'OK',
                                  {text: xdr.responseText},
                                  'Content-Type: ' + xdr.contentType
                              );
                          };
                          xdr.onerror = function () {
                              callback(404, 'Not Found');
                          };
                          if (s.xdrTimeout) {
                              xdr.ontimeout = function () {
                                  callback(0, 'timeout');
                              };
                              xdr.timeout = s.xdrTimeout;
                          }
                          xdr.send((s.hasContent && s.data) || null);
                      },
                      abort: function () {
                          if (xdr) {
                              xdr.onerror = $.noop();
                              xdr.abort();
                          }
                      }
                  };
              }
          });
      }
  }));