X-Git-Url: http://git.asbjorn.biz/?p=jquery.git;a=blobdiff_plain;f=src%2Fajax.js;h=f33bd49afff22de0edb78486369c37809a92bfd4;hp=08fbe6f01a017fde2f2f0c728c1d8ba1c7d4346a;hb=d66cc553167c6b00d19aa62a4dd1e9affb20d395;hpb=3e0cc815043c2425819743e907a0ce263a7ce164 diff --git a/src/ajax.js b/src/ajax.js index 08fbe6f..f33bd49 100644 --- a/src/ajax.js +++ b/src/ajax.js @@ -1,14 +1,139 @@ (function( jQuery ) { -var rscript = /)<[^<]*)*<\/script>/gi, - rselectTextarea = /^(?:select|textarea)/i, - rinput = /^(?:color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i, +var r20 = /%20/g, rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rhash = /#.*$/, + 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 = /\?/, - r20 = /%20/g, + rscript = /)<[^<]*)*<\/script>/gi, + rselectTextarea = /^(?:select|textarea)/i, + rspacesAjax = /\s+/, + rts = /([?&])_=[^&]*/, + rurl = /^([\w\+\.\-]+:)\/\/([^\/?#:]*)(?::(\d+))?/, // Keep a copy of the old load method - _load = jQuery.fn.load; + _load = jQuery.fn.load, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + 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 ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + if ( jQuery.isFunction( func ) ) { + var dataTypes = dataTypeExpression.toLowerCase().split( rspacesAjax ), + i = 0, + length = dataTypes.length, + dataType, + list, + placeBefore; + + // For each dataType in the dataTypeExpression + for(; i < length; i++ ) { + dataType = dataTypes[ i ]; + // We control if we're asked to add before + // any existing element + placeBefore = /^\+/.test( dataType ); + if ( placeBefore ) { + dataType = dataType.substr( 1 ) || "*"; + } + list = structure[ dataType ] = structure[ dataType ] || []; + // then we add to the structure accordingly + list[ placeBefore ? "unshift" : "push" ]( func ); + } + } + }; +} + +//Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR, + dataType /* internal */, inspected /* internal */ ) { + + dataType = dataType || options.dataTypes[ 0 ]; + inspected = inspected || {}; + + inspected[ dataType ] = true; + + var list = structure[ dataType ], + i = 0, + length = list ? list.length : 0, + executeOnly = ( structure === prefilters ), + selection; + + for(; i < length && ( executeOnly || !selection ); i++ ) { + selection = list[ i ]( options, originalOptions, jqXHR ); + // If we got redirected to another dataType + // we try there if executing only and not done already + if ( typeof selection === "string" ) { + if ( !executeOnly || inspected[ selection ] ) { + selection = undefined; + } else { + options.dataTypes.unshift( selection ); + selection = inspectPrefiltersOrTransports( + structure, options, originalOptions, jqXHR, selection, inspected ); + } + } + } + // If we're only executing or nothing was selected + // we try the catchall dataType if not done already + if ( ( executeOnly || !selection ) && !inspected[ "*" ] ) { + selection = inspectPrefiltersOrTransports( + structure, options, originalOptions, jqXHR, "*", inspected ); + } + // unnecessary when only executing (prefilters) + // but it'll be ignored by the caller in that case + return selection; +} jQuery.fn.extend({ load: function( url, params, callback ) { @@ -20,10 +145,10 @@ jQuery.fn.extend({ return this; } - var off = url.indexOf(" "); + var off = url.indexOf( " " ); if ( off >= 0 ) { - var selector = url.slice(off, url.length); - url = url.slice(0, off); + var selector = url.slice( off, url.length ); + url = url.slice( 0, off ); } // Default to a GET request @@ -52,26 +177,34 @@ jQuery.fn.extend({ type: type, dataType: "html", data: params, - complete: function( res, status ) { + // Complete callback (responseText is used internally) + 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 ( status === "success" || status === "notmodified" ) { + if ( jqXHR.isResolved() ) { + // #4825: Get the actual response in case + // a dataFilter is present in ajaxSettings + jqXHR.done(function( r ) { + responseText = r; + }); // See if a selector was specified self.html( selector ? // Create a dummy div to hold the results jQuery("
") // inject the contents of the document in, removing the scripts // to avoid any 'Permission Denied' errors in IE - .append(res.responseText.replace(rscript, "")) + .append(responseText.replace(rscript, "")) // Locate the specified elements .find(selector) : // If not, just inject the full result - res.responseText ); + responseText ); } if ( callback ) { - self.each( callback, [res.responseText, status, res] ); + self.each( callback, [ responseText, status, jqXHR ] ); } } }); @@ -80,42 +213,42 @@ jQuery.fn.extend({ }, serialize: function() { - return jQuery.param(this.serializeArray()); + return jQuery.param( this.serializeArray() ); }, serializeArray: function() { return this.map(function(){ - return this.elements ? jQuery.makeArray(this.elements) : this; + return this.elements ? jQuery.makeArray( this.elements ) : this; }) .filter(function(){ return this.name && !this.disabled && - (this.checked || rselectTextarea.test(this.nodeName) || - rinput.test(this.type)); + ( this.checked || rselectTextarea.test( this.nodeName ) || + rinput.test( this.type ) ); }) - .map(function(i, elem){ - var val = jQuery(this).val(); + .map(function( i, elem ){ + var val = jQuery( this ).val(); return val == null ? null : - jQuery.isArray(val) ? - jQuery.map( val, function(val, i){ - return {name: elem.name, value: val}; + jQuery.isArray( val ) ? + jQuery.map( val, function( val, i ){ + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; }) : - {name: elem.name, value: val}; + { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; }).get(); } }); // Attach a bunch of functions for handling common AJAX events -jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "), function(i,o){ - jQuery.fn[o] = function(f){ - return this.bind(o, f); +jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split( " " ), function( i, o ){ + jQuery.fn[ o ] = function( f ){ + return this.bind( o, f ); }; -}); +} ); jQuery.each( [ "get", "post" ], function( i, method ) { jQuery[ method ] = function( url, data, callback, type ) { - // shift arguments if data argument was omited + // shift arguments if data argument was omitted if ( jQuery.isFunction( data ) ) { type = type || callback; callback = data; @@ -130,24 +263,28 @@ jQuery.each( [ "get", "post" ], function( i, method ) { dataType: type }); }; -}); +} ); jQuery.extend({ getScript: function( url, callback ) { - return jQuery.get(url, null, callback, "script"); + return jQuery.get( url, null, callback, "script" ); }, getJSON: function( url, data, callback ) { - return jQuery.get(url, data, callback, "json"); + return jQuery.get( url, data, callback, "json" ); }, ajaxSetup: function( settings ) { - jQuery.extend( jQuery.ajaxSettings, settings ); + jQuery.extend( true, jQuery.ajaxSettings, settings ); + if ( settings.context ) { + jQuery.ajaxSettings.context = settings.context; + } }, ajaxSettings: { - url: location.href, + url: ajaxLocation, + isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ), global: true, type: "GET", contentType: "application/x-www-form-urlencoded", @@ -157,20 +294,13 @@ jQuery.extend({ timeout: 0, data: null, dataType: null, - dataTypes: null, username: null, password: null, cache: null, traditional: false, + headers: {}, + crossDomain: null, */ - xhr: function() { - return new window.XMLHttpRequest(); - }, - xhrResponseFields: { - xml: "XML", - text: "Text", - json: "JSON" - }, accepts: { xml: "application/xml, text/xml", @@ -180,96 +310,398 @@ jQuery.extend({ "*": "*/*" }, - autoDataType: { + contents: { xml: /xml/, html: /html/, json: /json/ }, - // Prefilters - // 1) They are useful to introduce custom dataTypes (see transport/jsonp for an example) - // 2) These are called: - // * BEFORE asking for a transport - // * AFTER param serialization (s.data is a string if s.processData is true) - // 3) They MUST be order agnostic - prefilters: [], - - // Transports bindings - // 1) key is the dataType - // 2) the catchall symbol "*" can be used - // 3) selection will start with transport dataType and THEN go to "*" if needed - transports: { + responseFields: { + xml: "responseXML", + text: "responseText" }, - // Checkers - // 1) key is dataType - // 2) they are called to control successful response - // 3) error throws is used as error data - dataCheckers: { + // List of data converters + // 1) key format is "source_type destination_type" (a single space in-between) + // 2) the catchall symbol "*" can be used for source_type + converters: { + + // Convert anything to text + "* text": window.String, + + // Text to html (true = no transformation) + "text html": true, - // Check if data is a string - "text": function(data) { - if ( typeof data != "string" ) { - jQuery.error("typeerror"); + // Evaluate text as a json expression + "text json": jQuery.parseJSON, + + // Parse text as xml + "text xml": jQuery.parseXML + } + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var // Create the final options object + s = jQuery.extend( true, {}, jQuery.ajaxSettings, options ), + // 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, + // 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 + responseHeadersString, + responseHeaders, + // transport + transport, + // timeout handle + timeoutTimer, + // Cross-domain detection vars + parts, + // The jqXHR state + state = 0, + // Loop variable + i, + // Fake xhr + jqXHR = { + + readyState: 0, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( state === 0 ) { + requestHeaders[ name.toLowerCase() ] = value; + } + return this; + }, + + // Raw string + getAllResponseHeaders: function() { + return state === 2 ? responseHeadersString : null; + }, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( state === 2 ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[1].toLowerCase() ] = match[ 2 ]; + } + } + match = responseHeaders[ key.toLowerCase() ]; + } + return match || null; + }, + + // Cancel the request + abort: function( statusText ) { + statusText = statusText || "abort"; + if ( transport ) { + transport.abort( statusText ); + } + done( 0, statusText ); + return this; } - }, + }; + + // Callback for when everything is done + // It is defined here because jslint complains if it is declared + // at the end of the function (which would be more logical and readable) + function done( status, statusText, responses, headers) { + + // Called once + if ( state === 2 ) { + return; + } + + // State is "done" now + state = 2; + + // Clear timeout if it exists + if ( timeoutTimer ) { + clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; - // Check if xml has been properly parsed - "xml": function(data) { - var documentElement = data ? data.documentElement : data; - if ( ! documentElement || ! documentElement.nodeName ) { - jQuery.error("typeerror"); + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status ? 4 : 0; + + var isSuccess, + success, + error, + response = responses ? ajaxHandleResponses( s, jqXHR, responses ) : undefined, + lastModified, + etag; + + // If successful, handle type chaining + if ( status >= 200 && status < 300 || status === 304 ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + + if ( ( lastModified = jqXHR.getResponseHeader( "Last-Modified" ) ) ) { + jQuery.lastModified[ ifModifiedKey ] = lastModified; + } + if ( ( etag = jqXHR.getResponseHeader( "Etag" ) ) ) { + jQuery.etag[ ifModifiedKey ] = etag; + } + } + + // If not modified + if ( status === 304 ) { + + statusText = "notmodified"; + isSuccess = true; + + // If we have data + } else { + + try { + success = ajaxConvert( s, response ); + statusText = "success"; + isSuccess = true; + } catch(e) { + // We have a parsererror + statusText = "parsererror"; + error = e; + } } - if ( documentElement.nodeName == "parsererror" ) { - jQuery.error("parsererror"); + } else { + // We extract error from statusText + // then normalize statusText and status for non-aborts + error = statusText; + if( status ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } } } - }, - // List of data converters - // 1) key format is "source_type => destination_type" (spaces required) - // 2) the catchall symbol "*" can be used for source_type - dataConverters: { + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = statusText; - // Convert anything to text - "* => text": function(data) { - return "" + data; - }, + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } - // Text to html (no transformation) - "text => html": function(data) { - return data; - }, + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; - // Evaluate text as a json expression - "text => json": jQuery.parseJSON, + if ( s.global ) { + globalEventContext.trigger( "ajax" + ( isSuccess ? "Success" : "Error" ), + [ jqXHR, s, isSuccess ? success : error ] ); + } - // Parse text as xml - "text => xml": function(data) { - var xml, parser; - if ( window.DOMParser ) { // Standard - parser = new DOMParser(); - xml = parser.parseFromString(data,"text/xml"); - } else { // IE - xml = new ActiveXObject("Microsoft.XMLDOM"); - xml.async="false"; - xml.loadXML(data); + // Complete + completeDeferred.resolveWith( callbackContext, [ jqXHR, statusText ] ); + + if ( s.global ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s] ); + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); } - return xml; } } - }, - // Main method - ajax: function( url , s ) { + // Attach deferreds + deferred.promise( jqXHR ); + jqXHR.success = jqXHR.done; + jqXHR.error = jqXHR.fail; + jqXHR.complete = completeDeferred.done; + + // Status-dependent callbacks + jqXHR.statusCode = function( map ) { + if ( map ) { + var tmp; + if ( state < 2 ) { + for( tmp in map ) { + statusCode[ tmp ] = [ statusCode[tmp], map[tmp] ]; + } + } else { + tmp = map[ jqXHR.status ]; + jqXHR.then( tmp, tmp ); + } + } + return this; + }; + + // 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, ajaxLocParts[ 1 ] + "//" ); + + // Extract dataTypes list + s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().split( rspacesAjax ); + + // Determine if a cross-domain request is in order + if ( !s.crossDomain ) { + parts = rurl.exec( s.url.toLowerCase() ); + s.crossDomain = !!( parts && + ( parts[ 1 ] != ajaxLocParts[ 1 ] || parts[ 2 ] != ajaxLocParts[ 2 ] || + ( parts[ 3 ] || ( parts[ 1 ] === "http:" ? 80 : 443 ) ) != + ( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? 80 : 443 ) ) ) + ); + } - if ( arguments.length === 1 ) { - s = url; - url = s ? s.url : undefined; + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); } - return jQuery.xhr().open( s ? s.type : undefined , url ).send( undefined , s ); + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Watch for a new set of requests + if ( s.global && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // If data is available, append data to url + if ( s.data ) { + 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 ) { + + var ts = jQuery.now(), + // try replacing _= if it is there + ret = s.url.replace( rts, "$1_=" + ts ); + + // if nothing was replaced, add timestamp to the end + s.url = ret + ( (ret === s.url ) ? ( rquery.test( s.url ) ? "&" : "?" ) + "_=" + ts : "" ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + requestHeaders[ "content-type" ] = s.contentType; + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + ifModifiedKey = ifModifiedKey || s.url; + if ( jQuery.lastModified[ ifModifiedKey ] ) { + requestHeaders[ "if-modified-since" ] = jQuery.lastModified[ ifModifiedKey ]; + } + if ( jQuery.etag[ ifModifiedKey ] ) { + requestHeaders[ "if-none-match" ] = jQuery.etag[ ifModifiedKey ]; + } + } + + // Set the Accepts header for the server, depending on the dataType + requestHeaders.accept = s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[0] ] ? + s.accepts[ s.dataTypes[0] ] + ( s.dataTypes[ 0 ] !== "*" ? ", */*; q=0.01" : "" ) : + s.accepts[ "*" ]; + + // Check for headers option + for ( i in s.headers ) { + requestHeaders[ i.toLowerCase() ] = s.headers[ i ]; + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) { + // Abort if not done already + done( 0, "abort" ); + // Return false + jqXHR = false; + + } else { + + // Install callbacks on deferreds + for ( i in { success: 1, error: 1, complete: 1 } ) { + jqXHR[ i ]( s[ i ] ); + } + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + // Set state as sending + state = jqXHR.readyState = 1; + // Send global event + if ( s.global ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = setTimeout( function(){ + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + transport.send( requestHeaders, done ); + } catch (e) { + // Propagate exception as error if not done + if ( status < 2 ) { + done( -1, e ); + // Simply rethrow otherwise + } else { + jQuery.error( e ); + } + } + } + } + return jqXHR; }, // Serialize an array of form elements or a set of @@ -278,8 +710,8 @@ jQuery.extend({ var s = [], add = function( key, value ) { // If value is a function, invoke it and return its value - value = jQuery.isFunction(value) ? value() : value; - s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value); + value = jQuery.isFunction( value ) ? value() : value; + s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value ); }; // Set traditional to true for jQuery <= 1.3.2 behavior. @@ -288,27 +720,27 @@ 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 ); - }); + } ); } else { // If traditional, encode the "old" way (the way 1.3.2 or older // did it), otherwise encode params recursively. for ( var prefix in a ) { - buildParams( prefix, a[prefix], traditional, add ); + buildParams( prefix, a[ prefix ], traditional, add ); } } // Return the resulting serialization - return s.join("&").replace(r20, "+"); + return s.join( "&" ).replace( r20, "+" ); } }); function buildParams( prefix, obj, traditional, add ) { - if ( jQuery.isArray(obj) && obj.length ) { + if ( jQuery.isArray( obj ) && obj.length ) { // Serialize array item. jQuery.each( obj, function( i, v ) { if ( traditional || rbracket.test( prefix ) ) { @@ -335,9 +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 { @@ -359,33 +791,158 @@ jQuery.extend({ }); -/* - * Create the request object; Microsoft failed to properly - * implement the XMLHttpRequest in IE7 (can't request local files), - * so we use the ActiveXObject when it is available - * Additionally XMLHttpRequest can be disabled in IE7/IE8 so - * we need a fallback. +/* Handles responses to an ajax request: + * - sets all responseXXX fields accordingly + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response */ -if ( window.ActiveXObject ) { - jQuery.ajaxSettings.xhr = function() { - if ( window.location.protocol !== "file:" ) { - try { - return new window.XMLHttpRequest(); - } catch( xhrError ) {} +function ajaxHandleResponses( s, jqXHR, responses ) { + + var contents = s.contents, + dataTypes = s.dataTypes, + responseFields = s.responseFields, + ct, + type, + finalDataType, + firstDataType; + + // Fill responseXXX fields + for( type in responseFields ) { + if ( type in responses ) { + jqXHR[ responseFields[type] ] = responses[ type ]; + } } - try { - return new window.ActiveXObject("Microsoft.XMLHTTP"); - } catch( activeError ) {} - }; + // Remove auto dataType and get content-type in the process + while( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = jqXHR.getResponseHeader( "content-type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[0] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } } -var testXHR = jQuery.ajaxSettings.xhr(); +// Chain conversions given the request and the original response +function ajaxConvert( s, response ) { + + // Apply the dataFilter if provided + if ( s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } -// Does this browser support XHR requests? -jQuery.support.ajax = !!testXHR; + var dataTypes = s.dataTypes, + converters = {}, + i, + key, + length = dataTypes.length, + tmp, + // Current and previous dataTypes + current = dataTypes[ 0 ], + prev, + // Conversion expression + conversion, + // Conversion function + conv, + // Conversion functions (transitive conversion) + conv1, + conv2; + + // 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 ]; + } + } + } -// Does this browser support crossDomain XHR requests -jQuery.support.cors = testXHR && "withCredentials" in testXHR; + // Get the dataTypes + prev = current; + current = dataTypes[ i ]; + + // If current is auto dataType, update it to prev + if( current === "*" ) { + current = prev; + // If no auto and dataTypes are actually different + } else if ( prev !== "*" && prev !== current ) { + + // Get the converter + conversion = prev + " " + current; + conv = converters[ conversion ] || converters[ "* " + current ]; + + // If there is no direct converter, search transitively + if ( !conv ) { + conv2 = undefined; + for( conv1 in converters ) { + tmp = conv1.split( " " ); + if ( tmp[ 0 ] === prev || tmp[ 0 ] === "*" ) { + conv2 = converters[ tmp[1] + " " + current ]; + if ( conv2 ) { + conv1 = converters[ conv1 ]; + if ( conv1 === true ) { + conv = conv2; + } else if ( conv2 === true ) { + conv = conv1; + } + break; + } + } + } + } + // If we found no converter, dispatch an error + if ( !( conv || conv2 ) ) { + jQuery.error( "No conversion from " + conversion.replace(" "," to ") ); + } + // If found converter is not an equivalence + if ( conv !== true ) { + // Convert with 1 or 2 converters accordingly + response = conv ? conv( response ) : conv2( conv1(response) ); + } + } + } + return response; +} })( jQuery );