X-Git-Url: http://git.asbjorn.biz/?p=jquery.git;a=blobdiff_plain;f=src%2Fxhr.js;h=c715396324681db74acf311c4f5f0a0f037d84db;hp=4896e6cb6fb00c00c3d5c6f97aadfaa8c400aed7;hb=3e0cc815043c2425819743e907a0ce263a7ce164;hpb=429b078dc7b5cf7765b44c8d32e125ecd8f1e2c9 diff --git a/src/xhr.js b/src/xhr.js index 4896e6c..c715396 100644 --- a/src/xhr.js +++ b/src/xhr.js @@ -6,39 +6,39 @@ var rquery_xhr = /\?/, rnoContent = /^(?:GET|HEAD)$/, rts = /([?&])_=[^&]*/, rurl = /^(\w+:)?\/\/([^\/?#]+)/, - + sliceFunc = Array.prototype.slice, - + isFunction = jQuery.isFunction; - + // Creates a jQuery xhr object jQuery.xhr = function( _native ) { - + if ( _native ) { return jQuery.ajaxSettings.xhr(); } - + function reset(force) { - + // We only need to reset if we went through the init phase // (with the exception of object creation) if ( force || internal ) { - + // Reset callbacks lists callbacksLists = { success: createCBList(), error: createCBList(), complete: createCBList() }; - + // Reset private variables requestHeaders = {}; responseHeadersString = responseHeaders = internal = done = timeoutTimer = s = undefined; - + // Reset state xhr.readyState = 0; sendFlag = 0; - + // Remove responseX fields for ( var name in xhr ) { if ( /^response/.test(name) ) { @@ -47,134 +47,134 @@ jQuery.xhr = function( _native ) { } } } - + function init() { - + var // Options extraction - + // Remove hash character (#7531: first for string promotion) url = s.url = ( "" + s.url ).replace( rhash , "" ), - + // Uppercase the type type = s.type = s.type.toUpperCase(), - + // Determine if request has content hasContent = s.hasContent = ! rnoContent.test( type ), - + // Extract dataTypes list dataType = s.dataType, dataTypes = s.dataTypes = dataType ? jQuery.trim(dataType).toLowerCase().split(/\s+/) : ["*"], - + // Determine if a cross-domain request is in order parts = rurl.exec( url.toLowerCase() ), loc = location, crossDomain = s.crossDomain = !!( parts && ( parts[1] && parts[1] != loc.protocol || parts[2] != loc.host ) ), - + // Get other options locally data = s.data, originalContentType = s.contentType, prefilters = s.prefilters, accepts = s.accepts, headers = s.headers, - + // Other Variables transportDataType, i; - + // Convert data if not already a string if ( data && s.processData && typeof data != "string" ) { data = s.data = jQuery.param( data , s.traditional ); } - + // Apply option prefilters for ( i = 0; i < prefilters.length; i++ ) { prefilters[i](s); } - + // Get internal internal = selectTransport( s ); - + // Re-actualize url & data url = s.url; data = s.data; - + // If internal was found if ( internal ) { - + // Get transportDataType transportDataType = dataTypes[0]; - + // More options handling for requests with no content if ( ! hasContent ) { - + // If data is available, append data to url if ( data ) { url += (rquery_xhr.test(url) ? "&" : "?") + data; } - + // Add anti-cache in url if needed if ( s.cache === false ) { - + var ts = jQuery.now(), // try replacing _= if it is there ret = url.replace(rts, "$1_=" + ts ); - + // if nothing was replaced, add timestamp to the end url = ret + ((ret == url) ? (rquery_xhr.test(url) ? "&" : "?") + "_=" + ts : ""); } - + s.url = url; } - + // Set the correct header, if data is being sent if ( ( data && hasContent ) || originalContentType ) { requestHeaders["content-type"] = s.contentType; } - + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. if ( s.ifModified ) { - if ( jQuery_lastModified[url] ) { + if ( jQuery_lastModified[url] ) { requestHeaders["if-modified-since"] = jQuery_lastModified[url]; } if ( jQuery_etag[url] ) { requestHeaders["if-none-match"] = jQuery_etag[url]; } } - + // Set the Accepts header for the server, depending on the dataType requestHeaders.accept = transportDataType && accepts[ transportDataType ] ? accepts[ transportDataType ] + ( transportDataType !== "*" ? ", */*; q=0.01" : "" ) : accepts[ "*" ]; - + // Check for headers option for ( i in headers ) { requestHeaders[ i.toLowerCase() ] = headers[ i ]; - } + } } - + callbackContext = s.context || s; globalEventContext = s.context ? jQuery(s.context) : jQuery.event; - + for ( i in callbacksLists ) { callbacksLists[i].bind(s[i]); } - + // Watch for a new set of requests if ( s.global && jQuery.active++ === 0 ) { jQuery.event.trigger( "ajaxStart" ); } - + done = whenDone; } - + function whenDone(status, statusText, response, headers) { - + // Called once done = undefined; - + // Reset sendFlag sendFlag = 0; - + // Cache response headers responseHeadersString = headers || ""; @@ -182,12 +182,12 @@ jQuery.xhr = function( _native ) { if ( timeoutTimer ) { clearTimeout(timeoutTimer); } - + var // Reference url url = s.url, // and ifModified status ifModified = s.ifModified, - + // Is it a success? isSuccess = 0, // Stored success @@ -197,19 +197,19 @@ jQuery.xhr = function( _native ) { // If not timeout, force a jQuery-compliant status text if ( statusText != "timeout" ) { - statusText = ( status >= 200 && status < 300 ) ? + statusText = ( status >= 200 && status < 300 ) ? "success" : ( status === 304 ? "notmodified" : "error" ); } - + // If successful, handle type chaining if ( statusText === "success" || statusText === "notmodified" ) { - + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. if ( ifModified ) { var lastModified = xhr.getResponseHeader("Last-Modified"), etag = xhr.getResponseHeader("Etag"); - + if (lastModified) { jQuery_lastModified[url] = lastModified; } @@ -217,17 +217,17 @@ jQuery.xhr = function( _native ) { jQuery_etag[url] = etag; } } - + if ( ifModified && statusText === "notmodified" ) { - + success = null; isSuccess = 1; - + } else { // Chain data conversions and determine the final value // (if an exception is thrown in the process, it'll be notified as an error) try { - + function checkData(data) { if ( data !== undefined ) { var testFunction = s.dataCheckers[srcDataType]; @@ -236,7 +236,7 @@ jQuery.xhr = function( _native ) { } } } - + function convertData (data) { var conversionFunction = dataConverters[srcDataType+" => "+destDataType] || dataConverters["* => "+destDataType], @@ -259,11 +259,11 @@ jQuery.xhr = function( _native ) { if ( noFunction ) { jQuery.error( "no data converter between " + srcDataType + " and " + destDataType ); } - + } return conversionFunction(data); } - + var dataTypes = s.dataTypes, i, length, @@ -272,13 +272,13 @@ jQuery.xhr = function( _native ) { srcDataType, destDataType, responseTypes = s.xhrResponseFields; - + for ( i = 0, length = dataTypes.length ; i < length ; i++ ) { - + destDataType = dataTypes[i]; - + if ( !srcDataType ) { // First time - + // Copy type srcDataType = destDataType; // Check @@ -289,92 +289,92 @@ jQuery.xhr = function( _native ) { // Recheck data checkData(data); } - + } else { // Subsequent times - + // handle auto // JULIAN: for reasons unknown to me === doesn't work here if (destDataType == "*") { - + destDataType = srcDataType; - + } else if ( srcDataType != destDataType ) { - + // Convert data = convertData(data); // Copy type & check srcDataType = destDataType; checkData(data); - + } - + } - + // Copy response into the xhr if it hasn't been already var responseDataType, responseType = responseTypes[srcDataType]; - + if ( responseType ) { - + responseDataType = srcDataType; - + } else { - + responseType = responseTypes[ responseDataType = "text" ]; - + } - + if ( responseType !== 1 ) { xhr[ "response" + responseType ] = data; responseTypes[ responseType ] = 1; } - + } - + // We have a real success success = data; isSuccess = 1; - + } catch(e) { - + statusText = "parsererror"; error = "" + e; - + } } - + } else { // if not success, mark it as an error - + error = error || statusText; - + } - + // Set data for the fake xhr object xhr.status = status; xhr.statusText = statusText; - + // Keep local copies of vars in case callbacks re-use the xhr var _s = s, _callbacksLists = callbacksLists, _callbackContext = callbackContext, _globalEventContext = globalEventContext; - + // Set state if the xhr hasn't been re-used function _setState( value ) { if ( xhr.readyState && s === _s ) { setState( value ); } } - + // Really completed? if ( status && s.async ) { setState( 2 ); _setState( 3 ); } - + // We're done _setState( 4 ); - + // Success _callbacksLists.success.fire( isSuccess , _callbackContext , success, statusText, xhr); if ( isSuccess && _s.global ) { @@ -383,7 +383,7 @@ jQuery.xhr = function( _native ) { // Error _callbacksLists.error.fire( ! isSuccess , _callbackContext , xhr, statusText, error); if ( !isSuccess && _s.global ) { - _globalEventContext.trigger( "ajaxError", [xhr, _s, error] ); + _globalEventContext.trigger( "ajaxError", [xhr, _s, error] ); } // Complete _callbacksLists.complete.fire( 1 , _callbackContext, xhr, statusText); @@ -395,14 +395,14 @@ jQuery.xhr = function( _native ) { } } } - + // Ready state control function checkState( expected , test ) { if ( expected !== true && ( expected === false || test === false || xhr.readyState !== expected ) ) { jQuery.error("INVALID_STATE_ERR"); } } - + // Ready state change function setState( value ) { xhr.readyState = value; @@ -410,7 +410,7 @@ jQuery.xhr = function( _native ) { xhr.onreadystatechange(); } } - + var // jQuery lists jQuery_lastModified = jQuery.lastModified, jQuery_etag = jQuery.etag, @@ -437,16 +437,16 @@ jQuery.xhr = function( _native ) { xhr = { // state readyState: 0, - + // Callback onreadystatechange: null, - + // Open open: function(type, url, async, username, password) { - + xhr.abort(); reset(); - + s = { type: type, url: url, @@ -454,128 +454,128 @@ jQuery.xhr = function( _native ) { username: username, password: password }; - + setState(1); - + return xhr; }, - + // Send send: function(data, moreOptions) { - + checkState(1 , !sendFlag); - + s.data = data; - + s = jQuery.extend( true, {}, jQuery.ajaxSettings, s, moreOptions || ( moreOptions === false ? { global: false } : {} ) ); - + if ( moreOptions ) { // We force the original context // (plain objects used as context get extended) s.context = moreOptions.context; } - + init(); - + // If not internal, abort if ( ! internal ) { done( 0 , "transport not found" ); return false; } - + // Allow custom headers/mimetypes and early abort if ( s.beforeSend ) { - + var _s = s; - + if ( s.beforeSend.call(callbackContext, xhr, s) === false || ! xhr.readyState || _s !== s ) { - + // Abort if not done if ( xhr.readyState && _s === s ) { xhr.abort(); } - + // Handle the global AJAX counter if ( _s.global && ! --jQuery.active ) { jQuery.event.trigger( "ajaxStop" ); } - + return false; } } - + sendFlag = 1; - + // Send global event if ( s.global ) { globalEventContext.trigger("ajaxSend", [xhr, s]); } - + // Timeout if ( s.async && s.timeout > 0 ) { timeoutTimer = setTimeout(function(){ xhr.abort("timeout"); }, s.timeout); } - + if ( s.async ) { setState(1); } - + try { - + internal.send(requestHeaders, done); return xhr; - + } catch (e) { - + if ( done ) { - + done(0, "error", "" + e); - + } else { - + jQuery.error(e); - + } } - + return false; }, - + // Caches the header setRequestHeader: function(name,value) { checkState(1, !sendFlag); requestHeaders[ name.toLowerCase() ] = value; return xhr; }, - + // Raw string getAllResponseHeaders: function() { return xhr.readyState <= 1 ? "" : responseHeadersString; }, - + // Builds headers hashtable if needed getResponseHeader: function( key ) { - + if ( xhr.readyState <= 1 ) { - + return null; - + } - + if ( responseHeaders === undefined ) { - + responseHeaders = {}; - + if ( typeof responseHeadersString === "string" ) { - + var match; - + while( ( match = rheaders.exec( responseHeadersString ) ) ) { responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ]; } @@ -583,7 +583,7 @@ jQuery.xhr = function( _native ) { } return responseHeaders[ key.toLowerCase() ]; }, - + // Cancel the request abort: function(statusText) { if (internal) { @@ -592,7 +592,7 @@ jQuery.xhr = function( _native ) { xhr.readyState = 0; } }; - + // Init data (so that we can bind callbacks early reset(1); @@ -607,82 +607,82 @@ jQuery.xhr = function( _native ) { return this; }; }); - + // Return the xhr emulation return xhr; }; // Create a callback list function createCBList() { - + var functors = [], autoFire = 0, fireArgs, list = { - + fire: function( flag , context ) { - + // Save info for later bindings fireArgs = arguments; - + // Remove autoFire to keep bindings in order autoFire = 0; - + var args = sliceFunc.call( fireArgs , 2 ); - + // Execute callbacks while ( flag && functors.length ) { flag = functors.shift().apply( context , args ) !== false; } - + // Clean if asked to stop if ( ! flag ) { clean(); } - + // Set autoFire - autoFire = 1; + autoFire = 1; }, - + bind: function() { - + var args = arguments, i = 0, length = args.length, func; - + for ( ; i < length ; i++ ) { - + func = args[ i ]; - + if ( jQuery.isArray(func) ) { - + list.bind.apply( list , func ); - + } else if ( isFunction(func) ) { - + // Add if not already in if ( ! pos( func ) ) { functors.push( func ); } } } - + if ( autoFire ) { list.fire.apply( list , fireArgs ); } }, - + unbind: function() { - + var i = 0, args = arguments, length = args.length, - func, + func, position; - + if ( length ) { - + for( ; i < length ; i++ ) { func = args[i]; if ( jQuery.isArray(func) ) { @@ -694,15 +694,15 @@ function createCBList() { } } } - + } else { - + functors = []; - + } } - + }; // Get the index of the functor in the list (1-based) @@ -711,7 +711,7 @@ function createCBList() { } return i < length ? ( i + 1 ) : 0; } - + // Clean the object function clean() { // Empty callbacks list @@ -721,12 +721,12 @@ function createCBList() { list[i] = jQuery.noop; } } - + return list; } jQuery.extend(jQuery.xhr, { - + // Add new prefilter prefilter: function (functor) { if ( isFunction(functor) ) { @@ -734,10 +734,10 @@ jQuery.extend(jQuery.xhr, { } return this; }, - + // Bind a transport to one or more dataTypes bindTransport: function () { - + var args = arguments, i, start = 0, @@ -749,63 +749,63 @@ jQuery.extend(jQuery.xhr, { append, list, transports = jQuery.ajaxSettings.transports; - + if ( length ) { - + if ( ! isFunction( args[ 0 ] ) ) { - + dataTypes = args[ 0 ].toLowerCase().split(/\s+/); start = 1; - + } - + if ( dataTypes.length && start < length ) { - + for ( i = start; i < length; i++ ) { functor = args[i]; if ( isFunction(functor) ) { functors.push( functor ); } } - + if ( functors.length ) { - + jQuery.each ( dataTypes, function( _ , dataType ) { - + first = /^\+/.test( dataType ); - + if (first) { dataType = dataType.substr(1); } - + if ( dataType !== "" ) { - + append = Array.prototype[ first ? "unshift" : "push" ]; - + list = transports[ dataType ]; - + jQuery.each ( functors, function( _ , functor ) { - + if ( ! list ) { - + list = transports[ dataType ] = [ functor ]; - + } else { - + append.call( list , functor ); } } ); } - + } ); } } } - + return this; } - + }); // Select a transport given options @@ -819,13 +819,13 @@ function selectTransport( s ) { length, checked = {}, flag; - + function initSearch( dataType ) { flag = transportDataType !== dataType && ! checked[ dataType ]; - + if ( flag ) { - + checked[ dataType ] = 1; transportDataType = dataType; transportsList = s.transports[ dataType ]; @@ -835,15 +835,15 @@ function selectTransport( s ) { return flag; } - + initSearch( dataTypes[ 0 ] ); for ( i = 0 ; ! transport && i <= length ; i++ ) { - + if ( i === length ) { - + initSearch( "*" ); - + } else { transport = transportsList[ i ]( s , determineDataType ); @@ -861,18 +861,18 @@ function selectTransport( s ) { return transport; } - + // Utility function that handles dataType when response is received // (for those transports that can give text or xml responses) function determineDataType( s , ct , text , xml ) { - + var autoDataType = s.autoDataType, type, regexp, dataTypes = s.dataTypes, transportDataType = dataTypes[0], response; - + // Auto (xml, json, script or text determined given headers) if ( transportDataType === "*" ) { @@ -881,29 +881,29 @@ function determineDataType( s , ct , text , xml ) { transportDataType = dataTypes[0] = type; break; } - } - } - + } + } + // xml and parsed as such if ( transportDataType === "xml" && xml && xml.documentElement /* #4958 */ ) { - + response = xml; - + // Text response was provided } else { - + response = text; - + // If it's not really text, defer to dataConverters if ( transportDataType !== "text" ) { dataTypes.unshift( "text" ); } - + } - + return response; -} +} })( jQuery );