Disables dataType redirection while selecting transport.
[jquery.git] / src / ajax.js
index 363e9c8..f33bd49 100644 (file)
@@ -6,6 +6,8 @@ var r20 = /%20/g,
        rhash = /#.*$/,
        rheaders = /^(.*?):\s*(.*?)\r?$/mg, // IE leaves an \r character at EOL
        rinput = /^(?:color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,
+       // #7653, #8125, #8152: local protocol detection
+       rlocalProtocol = /(?:^file|^widget|\-extension):$/,
        rnoContent = /^(?:GET|HEAD)$/,
        rprotocol = /^\/\//,
        rquery = /\?/,
@@ -13,7 +15,7 @@ var r20 = /%20/g,
        rselectTextarea = /^(?:select|textarea)/i,
        rspacesAjax = /\s+/,
        rts = /([?&])_=[^&]*/,
-       rurl = /^(\w+:)\/\/([^\/?#:]+)(?::(\d+))?/,
+       rurl = /^([\w\+\.\-]+:)\/\/([^\/?#:]*)(?::(\d+))?/,
 
        // Keep a copy of the old load method
        _load = jQuery.fn.load,
@@ -34,7 +36,28 @@ var r20 = /%20/g,
         * 2) the catchall symbol "*" can be used
         * 3) selection will start with transport dataType and THEN go to "*" if needed
         */
-       transports = {};
+       transports = {},
+
+       // Document location
+       ajaxLocation,
+
+       // Document location segments
+       ajaxLocParts;
+
+// #8138, IE may throw an exception when accessing
+// a field from document.location if document.domain has been set
+try {
+       ajaxLocation = document.location.href;
+} catch( e ) {
+       // Use the href attribute of an A element
+       // since IE will modify it given document.location
+       ajaxLocation = document.createElement( "a" );
+       ajaxLocation.href = "";
+       ajaxLocation = ajaxLocation.href;
+}
+
+// Segment location into parts
+ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() );
 
 // Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
 function addToPrefiltersOrTransports( structure ) {
@@ -73,7 +96,7 @@ function addToPrefiltersOrTransports( structure ) {
 }
 
 //Base inspection function for prefilters and transports
-function inspectPrefiltersOrTransports( structure, options, originalOptions, jXHR,
+function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR,
                dataType /* internal */, inspected /* internal */ ) {
 
        dataType = dataType || options.dataTypes[ 0 ];
@@ -88,16 +111,16 @@ function inspectPrefiltersOrTransports( structure, options, originalOptions, jXH
                selection;
 
        for(; i < length && ( executeOnly || !selection ); i++ ) {
-               selection = list[ i ]( options, originalOptions, jXHR );
+               selection = list[ i ]( options, originalOptions, jqXHR );
                // If we got redirected to another dataType
-               // we try there if not done already
+               // we try there if executing only and not done already
                if ( typeof selection === "string" ) {
-                       if ( inspected[ selection ] ) {
+                       if ( !executeOnly || inspected[ selection ] ) {
                                selection = undefined;
                        } else {
                                options.dataTypes.unshift( selection );
                                selection = inspectPrefiltersOrTransports(
-                                               structure, options, originalOptions, jXHR, selection, inspected );
+                                               structure, options, originalOptions, jqXHR, selection, inspected );
                        }
                }
        }
@@ -105,7 +128,7 @@ function inspectPrefiltersOrTransports( structure, options, originalOptions, jXH
        // we try the catchall dataType if not done already
        if ( ( executeOnly || !selection ) && !inspected[ "*" ] ) {
                selection = inspectPrefiltersOrTransports(
-                               structure, options, originalOptions, jXHR, "*", inspected );
+                               structure, options, originalOptions, jqXHR, "*", inspected );
        }
        // unnecessary when only executing (prefilters)
        // but it'll be ignored by the caller in that case
@@ -155,14 +178,14 @@ jQuery.fn.extend({
                        dataType: "html",
                        data: params,
                        // Complete callback (responseText is used internally)
-                       complete: function( jXHR, status, responseText ) {
-                               // Store the response as specified by the jXHR object
-                               responseText = jXHR.responseText;
+                       complete: function( jqXHR, status, responseText ) {
+                               // Store the response as specified by the jqXHR object
+                               responseText = jqXHR.responseText;
                                // If successful, inject the HTML into all the matched elements
-                               if ( jXHR.isResolved() ) {
+                               if ( jqXHR.isResolved() ) {
                                        // #4825: Get the actual response in case
                                        // a dataFilter is present in ajaxSettings
-                                       jXHR.done(function( r ) {
+                                       jqXHR.done(function( r ) {
                                                responseText = r;
                                        });
                                        // See if a selector was specified
@@ -181,7 +204,7 @@ jQuery.fn.extend({
                                }
 
                                if ( callback ) {
-                                       self.each( callback, [ responseText, status, jXHR ] );
+                                       self.each( callback, [ responseText, status, jqXHR ] );
                                }
                        }
                });
@@ -260,7 +283,8 @@ jQuery.extend({
        },
 
        ajaxSettings: {
-               url: location.href,
+               url: ajaxLocation,
+               isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
                global: true,
                type: "GET",
                contentType: "application/x-www-form-urlencoded",
@@ -322,9 +346,8 @@ jQuery.extend({
        // Main method
        ajax: function( url, options ) {
 
-               // If options is not an object,
-               // we simulate pre-1.5 signature
-               if ( typeof options !== "object" ) {
+               // If url is an object, simulate pre-1.5 signature
+               if ( typeof url === "object" ) {
                        options = url;
                        url = undefined;
                }
@@ -334,18 +357,24 @@ jQuery.extend({
 
                var // Create the final options object
                        s = jQuery.extend( true, {}, jQuery.ajaxSettings, options ),
-                       // Callbacks contexts
+                       // Callbacks context
                        // We force the original context if it exists
                        // or take it from jQuery.ajaxSettings otherwise
                        // (plain objects used as context get extended)
                        callbackContext =
                                ( s.context = ( "context" in options ? options : jQuery.ajaxSettings ).context ) || s,
-                       globalEventContext = callbackContext === s ? jQuery.event : jQuery( callbackContext ),
+                       // Context for global events
+                       // It's the callbackContext if one was provided in the options
+                       // and if it's a DOM node
+                       globalEventContext = callbackContext !== s && callbackContext.nodeType ?
+                               jQuery( callbackContext ) : jQuery.event,
                        // Deferreds
                        deferred = jQuery.Deferred(),
                        completeDeferred = jQuery._Deferred(),
                        // Status-dependent callbacks
                        statusCode = s.statusCode || {},
+                       // ifModified key
+                       ifModifiedKey,
                        // Headers (they are sent all at once)
                        requestHeaders = {},
                        // Response headers
@@ -356,15 +385,13 @@ jQuery.extend({
                        // timeout handle
                        timeoutTimer,
                        // Cross-domain detection vars
-                       loc = document.location,
-                       protocol = loc.protocol || "http:",
                        parts,
-                       // The jXHR state
+                       // The jqXHR state
                        state = 0,
                        // Loop variable
                        i,
                        // Fake xhr
-                       jXHR = {
+                       jqXHR = {
 
                                readyState: 0,
 
@@ -426,19 +453,19 @@ jQuery.extend({
                        }
 
                        // Dereference transport for early garbage collection
-                       // (no matter how long the jXHR object will be used)
+                       // (no matter how long the jqXHR object will be used)
                        transport = undefined;
 
                        // Cache response headers
                        responseHeadersString = headers || "";
 
                        // Set readyState
-                       jXHR.readyState = status ? 4 : 0;
+                       jqXHR.readyState = status ? 4 : 0;
 
                        var isSuccess,
                                success,
                                error,
-                               response = responses ? ajaxHandleResponses( s, jXHR, responses ) : undefined,
+                               response = responses ? ajaxHandleResponses( s, jqXHR, responses ) : undefined,
                                lastModified,
                                etag;
 
@@ -448,11 +475,11 @@ jQuery.extend({
                                // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
                                if ( s.ifModified ) {
 
-                                       if ( ( lastModified = jXHR.getResponseHeader( "Last-Modified" ) ) ) {
-                                               jQuery.lastModified[ s.url ] = lastModified;
+                                       if ( ( lastModified = jqXHR.getResponseHeader( "Last-Modified" ) ) ) {
+                                               jQuery.lastModified[ ifModifiedKey ] = lastModified;
                                        }
-                                       if ( ( etag = jXHR.getResponseHeader( "Etag" ) ) ) {
-                                               jQuery.etag[ s.url ] = etag;
+                                       if ( ( etag = jqXHR.getResponseHeader( "Etag" ) ) ) {
+                                               jQuery.etag[ ifModifiedKey ] = etag;
                                        }
                                }
 
@@ -488,30 +515,30 @@ jQuery.extend({
                        }
 
                        // Set data for the fake xhr object
-                       jXHR.status = status;
-                       jXHR.statusText = statusText;
+                       jqXHR.status = status;
+                       jqXHR.statusText = statusText;
 
                        // Success/Error
                        if ( isSuccess ) {
-                               deferred.resolveWith( callbackContext, [ success, statusText, jXHR ] );
+                               deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
                        } else {
-                               deferred.rejectWith( callbackContext, [ jXHR, statusText, error ] );
+                               deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
                        }
 
                        // Status-dependent callbacks
-                       jXHR.statusCode( statusCode );
+                       jqXHR.statusCode( statusCode );
                        statusCode = undefined;
 
                        if ( s.global ) {
                                globalEventContext.trigger( "ajax" + ( isSuccess ? "Success" : "Error" ),
-                                               [ jXHR, s, isSuccess ? success : error ] );
+                                               [ jqXHR, s, isSuccess ? success : error ] );
                        }
 
                        // Complete
-                       completeDeferred.resolveWith( callbackContext, [ jXHR, statusText ] );
+                       completeDeferred.resolveWith( callbackContext, [ jqXHR, statusText ] );
 
                        if ( s.global ) {
-                               globalEventContext.trigger( "ajaxComplete", [ jXHR, s] );
+                               globalEventContext.trigger( "ajaxComplete", [ jqXHR, s] );
                                // Handle the global AJAX counter
                                if ( !( --jQuery.active ) ) {
                                        jQuery.event.trigger( "ajaxStop" );
@@ -520,13 +547,13 @@ jQuery.extend({
                }
 
                // Attach deferreds
-               deferred.promise( jXHR );
-               jXHR.success = jXHR.done;
-               jXHR.error = jXHR.fail;
-               jXHR.complete = completeDeferred.done;
+               deferred.promise( jqXHR );
+               jqXHR.success = jqXHR.done;
+               jqXHR.error = jqXHR.fail;
+               jqXHR.complete = completeDeferred.done;
 
                // Status-dependent callbacks
-               jXHR.statusCode = function( map ) {
+               jqXHR.statusCode = function( map ) {
                        if ( map ) {
                                var tmp;
                                if ( state < 2 ) {
@@ -534,8 +561,8 @@ jQuery.extend({
                                                statusCode[ tmp ] = [ statusCode[tmp], map[tmp] ];
                                        }
                                } else {
-                                       tmp = map[ jXHR.status ];
-                                       jXHR.then( tmp, tmp );
+                                       tmp = map[ jqXHR.status ];
+                                       jqXHR.then( tmp, tmp );
                                }
                        }
                        return this;
@@ -544,7 +571,7 @@ jQuery.extend({
                // Remove hash character (#7531: and string promotion)
                // Add protocol if not provided (#5866: IE7 issue with protocol-less urls)
                // We also use the url parameter if available
-               s.url = ( "" + ( url || s.url ) ).replace( rhash, "" ).replace( rprotocol, protocol + "//" );
+               s.url = ( "" + ( url || s.url ) ).replace( rhash, "" ).replace( rprotocol, ajaxLocParts[ 1 ] + "//" );
 
                // Extract dataTypes list
                s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().split( rspacesAjax );
@@ -553,9 +580,9 @@ jQuery.extend({
                if ( !s.crossDomain ) {
                        parts = rurl.exec( s.url.toLowerCase() );
                        s.crossDomain = !!( parts &&
-                               ( parts[ 1 ] != protocol || parts[ 2 ] != loc.hostname ||
+                               ( parts[ 1 ] != ajaxLocParts[ 1 ] || parts[ 2 ] != ajaxLocParts[ 2 ] ||
                                        ( parts[ 3 ] || ( parts[ 1 ] === "http:" ? 80 : 443 ) ) !=
-                                               ( loc.port || ( protocol === "http:" ? 80 : 443 ) ) )
+                                               ( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? 80 : 443 ) ) )
                        );
                }
 
@@ -565,7 +592,7 @@ jQuery.extend({
                }
 
                // Apply prefilters
-               inspectPrefiltersOrTransports( prefilters, s, options, jXHR );
+               inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
 
                // Uppercase the type
                s.type = s.type.toUpperCase();
@@ -586,6 +613,9 @@ jQuery.extend({
                                s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.data;
                        }
 
+                       // Get ifModifiedKey before adding the anti-cache parameter
+                       ifModifiedKey = s.url;
+
                        // Add anti-cache in url if needed
                        if ( s.cache === false ) {
 
@@ -605,11 +635,12 @@ jQuery.extend({
 
                // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
                if ( s.ifModified ) {
-                       if ( jQuery.lastModified[ s.url ] ) {
-                               requestHeaders[ "if-modified-since" ] = jQuery.lastModified[ s.url ];
+                       ifModifiedKey = ifModifiedKey || s.url;
+                       if ( jQuery.lastModified[ ifModifiedKey ] ) {
+                               requestHeaders[ "if-modified-since" ] = jQuery.lastModified[ ifModifiedKey ];
                        }
-                       if ( jQuery.etag[ s.url ] ) {
-                               requestHeaders[ "if-none-match" ] = jQuery.etag[ s.url ];
+                       if ( jQuery.etag[ ifModifiedKey ] ) {
+                               requestHeaders[ "if-none-match" ] = jQuery.etag[ ifModifiedKey ];
                        }
                }
 
@@ -624,36 +655,36 @@ jQuery.extend({
                }
 
                // Allow custom headers/mimetypes and early abort
-               if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jXHR, s ) === false || state === 2 ) ) {
+               if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {
                                // Abort if not done already
                                done( 0, "abort" );
                                // Return false
-                               jXHR = false;
+                               jqXHR = false;
 
                } else {
 
                        // Install callbacks on deferreds
                        for ( i in { success: 1, error: 1, complete: 1 } ) {
-                               jXHR[ i ]( s[ i ] );
+                               jqXHR[ i ]( s[ i ] );
                        }
 
                        // Get transport
-                       transport = inspectPrefiltersOrTransports( transports, s, options, jXHR );
+                       transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
 
                        // If no transport, we auto-abort
                        if ( !transport ) {
                                done( -1, "No Transport" );
                        } else {
                                // Set state as sending
-                               state = jXHR.readyState = 1;
+                               state = jqXHR.readyState = 1;
                                // Send global event
                                if ( s.global ) {
-                                       globalEventContext.trigger( "ajaxSend", [ jXHR, s ] );
+                                       globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
                                }
                                // Timeout
                                if ( s.async && s.timeout > 0 ) {
                                        timeoutTimer = setTimeout( function(){
-                                               jXHR.abort( "timeout" );
+                                               jqXHR.abort( "timeout" );
                                        }, s.timeout );
                                }
 
@@ -670,7 +701,7 @@ jQuery.extend({
                                }
                        }
                }
-               return jXHR;
+               return jqXHR;
        },
 
        // Serialize an array of form elements or a set of
@@ -689,7 +720,7 @@ jQuery.extend({
                }
 
                // If an array was passed in, assume that it is an array of form elements.
-               if ( jQuery.isArray( a ) || a.jquery ) {
+               if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
                        // Serialize the form elements
                        jQuery.each( a, function() {
                                add( this.name, this.value );
@@ -736,9 +767,9 @@ function buildParams( prefix, obj, traditional, add ) {
 
                // Serialize object item.
                } else {
-                       jQuery.each( obj, function( k, v ) {
-                               buildParams( prefix + "[" + k + "]", v, traditional, add );
-                       });
+                       for ( var name in obj ) {
+                               buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
+                       }
                }
 
        } else {
@@ -765,7 +796,7 @@ jQuery.extend({
  * - finds the right dataType (mediates between content-type and expected dataType)
  * - returns the corresponding response
  */
-function ajaxHandleResponses( s, jXHR, responses ) {
+function ajaxHandleResponses( s, jqXHR, responses ) {
 
        var contents = s.contents,
                dataTypes = s.dataTypes,
@@ -778,7 +809,7 @@ function ajaxHandleResponses( s, jXHR, responses ) {
        // Fill responseXXX fields
        for( type in responseFields ) {
                if ( type in responses ) {
-                       jXHR[ responseFields[type] ] = responses[ type ];
+                       jqXHR[ responseFields[type] ] = responses[ type ];
                }
        }
 
@@ -786,7 +817,7 @@ function ajaxHandleResponses( s, jXHR, responses ) {
        while( dataTypes[ 0 ] === "*" ) {
                dataTypes.shift();
                if ( ct === undefined ) {
-                       ct = jXHR.getResponseHeader( "content-type" );
+                       ct = jqXHR.getResponseHeader( "content-type" );
                }
        }
 
@@ -838,8 +869,9 @@ function ajaxConvert( s, response ) {
        }
 
        var dataTypes = s.dataTypes,
-               converters = s.converters,
+               converters = {},
                i,
+               key,
                length = dataTypes.length,
                tmp,
                // Current and previous dataTypes
@@ -856,6 +888,16 @@ function ajaxConvert( s, response ) {
        // For each dataType in the chain
        for( i = 1; i < length; i++ ) {
 
+               // Create converters map
+               // with lowercased keys
+               if ( i === 1 ) {
+                       for( key in s.converters ) {
+                               if( typeof key === "string" ) {
+                                       converters[ key.toLowerCase() ] = s.converters[ key ];
+                               }
+                       }
+               }
+
                // Get the dataTypes
                prev = current;
                current = dataTypes[ i ];