git.r.bdr.sh - rbdr/dotfiles/blob - atom/packages/ex-mode/node_modules/space-pen/node_modules/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 XMLHttpRequest();
  10         } catch( e ) {}
  11 };
  12
  13 var xhrId = 0,
  14         xhrCallbacks = {},
  15         xhrSuccessStatus = {
  16                 // file protocol always yields status code 0, assume 200
  17                 0: 200,
  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: IE9
  25 // Open requests must be manually aborted on unload (#5280)
  26 // See https://support.microsoft.com/kb/2856746 for more info
  27 if ( window.attachEvent ) {
  28         window.attachEvent( "onunload", function() {
  29                 for ( var key in xhrCallbacks ) {
  30                         xhrCallbacks[ key ]();
  31                 }
  32         });
  33 }
  34
  35 support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
  36 support.ajax = xhrSupported = !!xhrSupported;
  37
  38 jQuery.ajaxTransport(function( options ) {
  39         var callback;
  40
  41         // Cross domain only allowed if supported through XMLHttpRequest
  42         if ( support.cors || xhrSupported && !options.crossDomain ) {
  43                 return {
  44                         send: function( headers, complete ) {
  45                                 var i,
  46                                         xhr = options.xhr(),
  47                                         id = ++xhrId;
  48
  49                                 xhr.open( options.type, options.url, options.async, options.username, options.password );
  50
  51                                 // Apply custom fields if provided
  52                                 if ( options.xhrFields ) {
  53                                         for ( i in options.xhrFields ) {
  54                                                 xhr[ i ] = options.xhrFields[ i ];
  55                                         }
  56                                 }
  57
  58                                 // Override mime type if needed
  59                                 if ( options.mimeType && xhr.overrideMimeType ) {
  60                                         xhr.overrideMimeType( options.mimeType );
  61                                 }
  62
  63                                 // X-Requested-With header
  64                                 // For cross-domain requests, seeing as conditions for a preflight are
  65                                 // akin to a jigsaw puzzle, we simply never set it to be sure.
  66                                 // (it can always be set on a per-request basis or even using ajaxSetup)
  67                                 // For same-domain requests, won't change header if already provided.
  68                                 if ( !options.crossDomain && !headers["X-Requested-With"] ) {
  69                                         headers["X-Requested-With"] = "XMLHttpRequest";
  70                                 }
  71
  72                                 // Set headers
  73                                 for ( i in headers ) {
  74                                         xhr.setRequestHeader( i, headers[ i ] );
  75                                 }
  76
  77                                 // Callback
  78                                 callback = function( type ) {
  79                                         return function() {
  80                                                 if ( callback ) {
  81                                                         delete xhrCallbacks[ id ];
  82                                                         callback = xhr.onload = xhr.onerror = null;
  83
  84                                                         if ( type === "abort" ) {
  85                                                                 xhr.abort();
  86                                                         } else if ( type === "error" ) {
  87                                                                 complete(
  88                                                                         // file: protocol always yields status 0; see #8605, #14207
  89                                                                         xhr.status,
  90                                                                         xhr.statusText
  91                                                                 );
  92                                                         } else {
  93                                                                 complete(
  94                                                                         xhrSuccessStatus[ xhr.status ] || xhr.status,
  95                                                                         xhr.statusText,
  96                                                                         // Support: IE9
  97                                                                         // Accessing binary-data responseText throws an exception
  98                                                                         // (#11426)
  99                                                                         typeof xhr.responseText === "string" ? {
 100                                                                                 text: xhr.responseText
 101                                                                         } : undefined,
 102                                                                         xhr.getAllResponseHeaders()
 103                                                                 );
 104                                                         }
 105                                                 }
 106                                         };
 107                                 };
 108
 109                                 // Listen to events
 110                                 xhr.onload = callback();
 111                                 xhr.onerror = callback("error");
 112
 113                                 // Create the abort callback
 114                                 callback = xhrCallbacks[ id ] = callback("abort");
 115
 116                                 try {
 117                                         // Do send the request (this may raise an exception)
 118                                         xhr.send( options.hasContent && options.data || null );
 119                                 } catch ( e ) {
 120                                         // #14683: Only rethrow if this hasn't been notified as an error yet
 121                                         if ( callback ) {
 122                                                 throw e;
 123                                         }
 124                                 }
 125                         },
 126
 127                         abort: function() {
 128                                 if ( callback ) {
 129                                         callback();
 130                                 }
 131                         }
 132                 };
 133         }
 134 });
 135
 136 });