ecomp-portal-FE/client/bower_components/jquery/src/ajax/xhr.js

   1 define( [
   2         "../core",
   3         "../var/support",
   4         "../ajax"
   5 ], function( jQuery, support ) {
   6
   7 jQuery.ajaxSettings.xhr = function() {
   8         try {
   9                 return new window.XMLHttpRequest();
  10         } catch ( e ) {}
  11 };
  12
  13 var xhrSuccessStatus = {
  14
  15                 // File protocol always yields status code 0, assume 200
  16                 0: 200,
  17
  18                 // Support: IE9
  19                 // #1450: sometimes IE returns 1223 when it should be 204
  20                 1223: 204
  21         },
  22         xhrSupported = jQuery.ajaxSettings.xhr();
  23
  24 support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
  25 support.ajax = xhrSupported = !!xhrSupported;
  26
  27 jQuery.ajaxTransport( function( options ) {
  28         var callback, errorCallback;
  29
  30         // Cross domain only allowed if supported through XMLHttpRequest
  31         if ( support.cors || xhrSupported && !options.crossDomain ) {
  32                 return {
  33                         send: function( headers, complete ) {
  34                                 var i,
  35                                         xhr = options.xhr();
  36
  37                                 xhr.open(
  38                                         options.type,
  39                                         options.url,
  40                                         options.async,
  41                                         options.username,
  42                                         options.password
  43                                 );
  44
  45                                 // Apply custom fields if provided
  46                                 if ( options.xhrFields ) {
  47                                         for ( i in options.xhrFields ) {
  48                                                 xhr[ i ] = options.xhrFields[ i ];
  49                                         }
  50                                 }
  51
  52                                 // Override mime type if needed
  53                                 if ( options.mimeType && xhr.overrideMimeType ) {
  54                                         xhr.overrideMimeType( options.mimeType );
  55                                 }
  56
  57                                 // X-Requested-With header
  58                                 // For cross-domain requests, seeing as conditions for a preflight are
  59                                 // akin to a jigsaw puzzle, we simply never set it to be sure.
  60                                 // (it can always be set on a per-request basis or even using ajaxSetup)
  61                                 // For same-domain requests, won't change header if already provided.
  62                                 if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
  63                                         headers[ "X-Requested-With" ] = "XMLHttpRequest";
  64                                 }
  65
  66                                 // Set headers
  67                                 for ( i in headers ) {
  68                                         xhr.setRequestHeader( i, headers[ i ] );
  69                                 }
  70
  71                                 // Callback
  72                                 callback = function( type ) {
  73                                         return function() {
  74                                                 if ( callback ) {
  75                                                         callback = errorCallback = xhr.onload =
  76                                                                 xhr.onerror = xhr.onabort = xhr.onreadystatechange = null;
  77
  78                                                         if ( type === "abort" ) {
  79                                                                 xhr.abort();
  80                                                         } else if ( type === "error" ) {
  81
  82                                                                 // Support: IE9
  83                                                                 // On a manual native abort, IE9 throws
  84                                                                 // errors on any property access that is not readyState
  85                                                                 if ( typeof xhr.status !== "number" ) {
  86                                                                         complete( 0, "error" );
  87                                                                 } else {
  88                                                                         complete(
  89
  90                                                                                 // File: protocol always yields status 0; see #8605, #14207
  91                                                                                 xhr.status,
  92                                                                                 xhr.statusText
  93                                                                         );
  94                                                                 }
  95                                                         } else {
  96                                                                 complete(
  97                                                                         xhrSuccessStatus[ xhr.status ] || xhr.status,
  98                                                                         xhr.statusText,
  99
 100                                                                         // Support: IE9 only
 101                                                                         // IE9 has no XHR2 but throws on binary (trac-11426)
 102                                                                         // For XHR2 non-text, let the caller handle it (gh-2498)
 103                                                                         ( xhr.responseType || "text" ) !== "text"  ||
 104                                                                         typeof xhr.responseText !== "string" ?
 105                                                                                 { binary: xhr.response } :
 106                                                                                 { text: xhr.responseText },
 107                                                                         xhr.getAllResponseHeaders()
 108                                                                 );
 109                                                         }
 110                                                 }
 111                                         };
 112                                 };
 113
 114                                 // Listen to events
 115                                 xhr.onload = callback();
 116                                 errorCallback = xhr.onerror = callback( "error" );
 117
 118                                 // Support: IE9
 119                                 // Use onreadystatechange to replace onabort
 120                                 // to handle uncaught aborts
 121                                 if ( xhr.onabort !== undefined ) {
 122                                         xhr.onabort = errorCallback;
 123                                 } else {
 124                                         xhr.onreadystatechange = function() {
 125
 126                                                 // Check readyState before timeout as it changes
 127                                                 if ( xhr.readyState === 4 ) {
 128
 129                                                         // Allow onerror to be called first,
 130                                                         // but that will not handle a native abort
 131                                                         // Also, save errorCallback to a variable
 132                                                         // as xhr.onerror cannot be accessed
 133                                                         window.setTimeout( function() {
 134                                                                 if ( callback ) {
 135                                                                         errorCallback();
 136                                                                 }
 137                                                         } );
 138                                                 }
 139                                         };
 140                                 }
 141
 142                                 // Create the abort callback
 143                                 callback = callback( "abort" );
 144
 145                                 try {
 146
 147                                         // Do send the request (this may raise an exception)
 148                                         xhr.send( options.hasContent && options.data || null );
 149                                 } catch ( e ) {
 150
 151                                         // #14683: Only rethrow if this hasn't been notified as an error yet
 152                                         if ( callback ) {
 153                                                 throw e;
 154                                         }
 155                                 }
 156                         },
 157
 158                         abort: function() {
 159                                 if ( callback ) {
 160                                         callback();
 161                                 }
 162                         }
 163                 };
 164         }
 165 } );
 166
 167 } );