X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fajax.js;h=3f4f732bd30a2aaaa3c45e172b7741e9a3843fb8;hb=1f92edee207829a28de80ee72548cdbd599bcc79;hp=3416dd66d145e7c0ed56eaa7304adc710e1cafed;hpb=0f6e9a8c69007ce7ebbb7c46637115a207d1a594;p=jquery.git diff --git a/src/ajax.js b/src/ajax.js index 3416dd6..3f4f732 100644 --- a/src/ajax.js +++ b/src/ajax.js @@ -1,20 +1,19 @@ -var jsc = now(), - rscript = //g, - rselectTextarea = /select|textarea/i, - rinput = /text|hidden|password|search/i, - jsre = /=\?(&|$)/, +(function( jQuery ) { + +var rscript = /)<[^<]*)*<\/script>/gi, + rselectTextarea = /^(?:select|textarea)/i, + rinput = /^(?:color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i, + rbracket = /\[\]$/, rquery = /\?/, - rts = /(\?|&)_=.*?(&|$)/, - rurl = /^(\w+:)?\/\/([^\/?#]+)/, - r20 = /%20/g; + r20 = /%20/g, -jQuery.fn.extend({ - // Keep a copy of the old load - _load: jQuery.fn.load, + // Keep a copy of the old load method + _load = jQuery.fn.load; +jQuery.fn.extend({ load: function( url, params, callback ) { - if ( typeof url !== "string" ) { - return this._load( url ); + if ( typeof url !== "string" && _load ) { + return _load.apply( this, arguments ); // Don't do a request if no elements are being requested } else if ( !this.length ) { @@ -40,25 +39,26 @@ jQuery.fn.extend({ // Otherwise, build a param string } else if ( typeof params === "object" ) { - params = jQuery.param( params ); + params = jQuery.param( params, jQuery.ajaxSettings.traditional ); type = "POST"; } } - + + var self = this; + // Request the remote document jQuery.ajax({ url: url, type: type, dataType: "html", data: params, - context:this, - complete: function(res, status){ + complete: function( res, status ) { // If successful, inject the HTML into all the matched elements if ( status === "success" || status === "notmodified" ) { // See if a selector was specified - this.html( selector ? + self.html( selector ? // Create a dummy div to hold the results - jQuery("
") + jQuery("
") // inject the contents of the document in, removing the scripts // to avoid any 'Permission Denied' errors in IE .append(res.responseText.replace(rscript, "")) @@ -71,7 +71,7 @@ jQuery.fn.extend({ } if ( callback ) { - this.each( callback, [res.responseText, status, res] ); + self.each( callback, [res.responseText, status, res] ); } } }); @@ -82,6 +82,7 @@ jQuery.fn.extend({ serialize: function() { return jQuery.param(this.serializeArray()); }, + serializeArray: function() { return this.map(function(){ return this.elements ? jQuery.makeArray(this.elements) : this; @@ -170,476 +171,236 @@ jQuery.extend({ /* timeout: 0, data: null, + dataType: null, + dataTypes: null, username: null, password: null, + cache: null, + traditional: false, */ - // Create the request object; Microsoft failed to properly - // implement the XMLHttpRequest in IE7, so we use the ActiveXObject when it is available - // This function can be overriden by calling jQuery.ajaxSetup - xhr: function(){ - return window.ActiveXObject ? - new ActiveXObject("Microsoft.XMLHTTP") : - new XMLHttpRequest(); + xhr: function() { + return new window.XMLHttpRequest(); }, + xhrResponseFields: { + xml: "XML", + text: "Text", + json: "JSON" + }, + accepts: { xml: "application/xml, text/xml", html: "text/html", - script: "text/javascript, application/javascript", - json: "application/json, text/javascript", text: "text/plain", - _default: "*/*" - } - }, - - // Last-Modified header cache for next request - lastModified: {}, - etag: {}, - - ajax: function( s ) { - // Extend the settings, but re-extend 's' so that it can be - // checked again later (in the test suite, specifically) - s = jQuery.extend(true, {}, jQuery.ajaxSettings, s); + json: "application/json, text/javascript", + "*": "*/*" + }, - var jsonp, status, data, - callbackContext = s.context || window, - type = s.type.toUpperCase(); - - // convert data if not already a string - if ( s.data && s.processData && typeof s.data !== "string" ) { - s.data = jQuery.param(s.data); - } - - // Handle JSONP Parameter Callbacks - if ( s.dataType === "jsonp" ) { - if ( type === "GET" ) { - if ( !jsre.test( s.url ) ) { - s.url += (rquery.test( s.url ) ? "&" : "?") + (s.jsonp || "callback") + "=?"; + autoDataType: { + 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: { + }, + + // Checkers + // 1) key is dataType + // 2) they are called to control successful response + // 3) error throws is used as error data + dataCheckers: { + + // Check if data is a string + "text": function(data) { + if ( typeof data != "string" ) { + jQuery.error("typeerror"); } - } else if ( !s.data || !jsre.test(s.data) ) { - s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?"; - } - s.dataType = "json"; - } - - // Build temporary JSONP function - if ( s.dataType === "json" && (s.data && jsre.test(s.data) || jsre.test(s.url)) ) { - jsonp = "jsonp" + jsc++; - - // Replace the =? sequence both in the query string and the data - if ( s.data ) { - s.data = (s.data + "").replace(jsre, "=" + jsonp + "$1"); - } - - s.url = s.url.replace(jsre, "=" + jsonp + "$1"); - - // We need to make sure - // that a JSONP style response is executed properly - s.dataType = "script"; - - // Handle JSONP-style loading - window[ jsonp ] = function(tmp){ - data = tmp; - success(); - complete(); - // Garbage collect - window[ jsonp ] = undefined; - try{ delete window[ jsonp ]; } catch(e){} - if ( head ) { - head.removeChild( script ); + }, + + // Check if xml has been properly parsed + "xml": function(data) { + var documentElement = data ? data.documentElement : data; + if ( ! documentElement || ! documentElement.nodeName ) { + jQuery.error("typeerror"); } - }; - } - - if ( s.dataType === "script" && s.cache === null ) { - s.cache = false; - } - - if ( s.cache === false && type === "GET" ) { - var ts = now(); - - // try replacing _= if it is there - var ret = s.url.replace(rts, "$1_=" + ts + "$2"); - - // if nothing was replaced, add timestamp to the end - s.url = ret + ((ret === s.url) ? (rquery.test(s.url) ? "&" : "?") + "_=" + ts : ""); - } - - // If data is available, append data to url for get requests - if ( s.data && type === "GET" ) { - s.url += (rquery.test(s.url) ? "&" : "?") + s.data; - } - - // Watch for a new set of requests - if ( s.global && ! jQuery.active++ ) { - jQuery.event.trigger( "ajaxStart" ); - } - - // Matches an absolute URL, and saves the domain - var parts = rurl.exec( s.url ); - - // If we're requesting a remote document - // and trying to load JSON or Script with a GET - if ( s.dataType === "script" && type === "GET" && parts - && ( parts[1] && parts[1] !== location.protocol || parts[2] !== location.host )) { - - var head = document.getElementsByTagName("head")[0] || document.documentElement; - var script = document.createElement("script"); - script.src = s.url; - if ( s.scriptCharset ) { - script.charset = s.scriptCharset; - } - - // Handle Script loading - if ( !jsonp ) { - var done = false; - - // Attach handlers for all browsers - script.onload = script.onreadystatechange = function(){ - if ( !done && (!this.readyState || - this.readyState === "loaded" || this.readyState === "complete") ) { - done = true; - success(); - complete(); - - // Handle memory leak in IE - script.onload = script.onreadystatechange = null; - if ( head && script.parentNode ) { - head.removeChild( script ); - } - } - }; - } - - // Use insertBefore instead of appendChild to circumvent an IE6 bug. - // This arises when a base node is used (#2709 and #4378). - head.insertBefore( script, head.firstChild ); - - // We handle everything using the script element injection - return undefined; - } - - var requestDone = false; - - // Create the request object - var xhr = s.xhr(); - - // Open the socket - // Passing null username, generates a login popup on Opera (#2865) - if ( s.username ) { - xhr.open(type, s.url, s.async, s.username, s.password); - } else { - xhr.open(type, s.url, s.async); - } - - // Need an extra try/catch for cross domain requests in Firefox 3 - try { - // Set the correct header, if data is being sent - if ( s.data ) { - xhr.setRequestHeader("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[s.url] ) { - xhr.setRequestHeader("If-Modified-Since", jQuery.lastModified[s.url]); + if ( documentElement.nodeName == "parsererror" ) { + jQuery.error("parsererror"); } - - if ( jQuery.etag[s.url] ) { - xhr.setRequestHeader("If-None-Match", jQuery.etag[s.url]); - } - } - - // Set header so the called script knows that it's an XMLHttpRequest - xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest"); - - // Set the Accepts header for the server, depending on the dataType - xhr.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ? - s.accepts[ s.dataType ] + ", */*" : - s.accepts._default ); - } catch(e){} - - // Allow custom headers/mimetypes and early abort - if ( s.beforeSend && s.beforeSend.call(callbackContext, xhr, s) === false ) { - // Handle the global AJAX counter - if ( s.global && ! --jQuery.active ) { - jQuery.event.trigger( "ajaxStop" ); } - - // close opended socket - xhr.abort(); - return false; - } - - if ( s.global ) { - trigger("ajaxSend", [xhr, s]); - } - - // Wait for a response to come back - var onreadystatechange = function(isTimeout){ - // The request was aborted, clear the interval and decrement jQuery.active - if ( !xhr || xhr.readyState === 0 ) { - if ( ival ) { - // clear poll interval - clearInterval( ival ); - ival = null; - - // Handle the global AJAX counter - if ( s.global && ! --jQuery.active ) { - jQuery.event.trigger( "ajaxStop" ); - } - } - - // The transfer is complete and the data is available, or the request timed out - } else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) { - requestDone = true; - - // clear poll interval - if (ival) { - clearInterval(ival); - ival = null; - } - - status = isTimeout === "timeout" ? - "timeout" : - !jQuery.httpSuccess( xhr ) ? - "error" : - s.ifModified && jQuery.httpNotModified( xhr, s.url ) ? - "notmodified" : - "success"; - - if ( status === "success" ) { - // Watch for, and catch, XML document parse errors - try { - // process the data (runs the xml through httpData regardless of callback) - data = jQuery.httpData( xhr, s.dataType, s ); - } catch(e) { - status = "parsererror"; - } - } - - // Make sure that the request was successful or notmodified - if ( status === "success" || status === "notmodified" ) { - // JSONP handles its own success callback - if ( !jsonp ) { - success(); - } - } else { - jQuery.handleError(s, xhr, status); - } - - // Fire the complete handlers - complete(); - - if ( isTimeout ) { - xhr.abort(); - } - - // Stop memory leaks - if ( s.async ) { - xhr = null; + }, + + // 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: { + + // Convert anything to text + "* => text": function(data) { + return "" + data; + }, + + // Text to html (no transformation) + "text => html": function(data) { + return data; + }, + + // Evaluate text as a json expression + "text => json": jQuery.parseJSON, + + // 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); } + return xml; } - }; - - if ( s.async ) { - // don't attach the handler to the request, just poll it instead - var ival = setInterval(onreadystatechange, 13); - - // Timeout checker - if ( s.timeout > 0 ) { - setTimeout(function(){ - // Check to see if the request is still happening - if ( xhr && !requestDone ) { - onreadystatechange( "timeout" ); - } - }, s.timeout); - } - } - - // Send the data - try { - xhr.send( type === "POST" || type === "PUT" ? s.data : null ); - } catch(e) { - jQuery.handleError(s, xhr, null, e); - // Fire the complete handlers - complete(); } - - // firefox 1.5 doesn't fire statechange for sync requests - if ( !s.async ) { - onreadystatechange(); - } - - function success(){ - // If a local callback was specified, fire it and pass it the data - if ( s.success ) { - s.success.call( callbackContext, data, status, xhr ); - } - - // Fire the global callback - if ( s.global ) { - trigger( "ajaxSuccess", [xhr, s] ); - } - } - - function complete(){ - // Process result - if ( s.complete ) { - s.complete.call( callbackContext, xhr, status); - } - - // The request was completed - if ( s.global ) { - trigger( "ajaxComplete", [xhr, s] ); - } - - // Handle the global AJAX counter - if ( s.global && ! --jQuery.active ) { - jQuery.event.trigger( "ajaxStop" ); - } - } - - function trigger(type, args){ - (s.context ? jQuery(s.context) : jQuery.event).trigger(type, args); - } - - // return XMLHttpRequest to allow aborting the request etc. - return xhr; }, - handleError: function( s, xhr, status, e ) { - // If a local callback was specified, fire it - if ( s.error ) { - s.error.call( s.context || window, xhr, status, e ); - } - - // Fire the global callback - if ( s.global ) { - (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] ); - } - }, - - // Counter for holding the number of active queries - active: 0, - - // Determines if an XMLHttpRequest was successful or not - httpSuccess: function( xhr ) { - try { - // IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450 - return !xhr.status && location.protocol === "file:" || - // Opera returns 0 when status is 304 - ( xhr.status >= 200 && xhr.status < 300 ) || - xhr.status === 304 || xhr.status === 1223 || xhr.status === 0; - } catch(e){} - - return false; - }, - - // Determines if an XMLHttpRequest returns NotModified - httpNotModified: function( xhr, url ) { - var lastModified = xhr.getResponseHeader("Last-Modified"), - etag = xhr.getResponseHeader("Etag"); - - if ( lastModified ) { - jQuery.lastModified[url] = lastModified; - } - - if ( etag ) { - jQuery.etag[url] = etag; - } - - // Opera returns 0 when status is 304 - return xhr.status === 304 || xhr.status === 0; - }, - - httpData: function( xhr, type, s ) { - var ct = xhr.getResponseHeader("content-type"), - xml = type === "xml" || !type && ct && ct.indexOf("xml") >= 0, - data = xml ? xhr.responseXML : xhr.responseText; - - if ( xml && data.documentElement.nodeName === "parsererror" ) { - throw "parsererror"; - } - - // Allow a pre-filtering function to sanitize the response - // s is checked to keep backwards compatibility - if ( s && s.dataFilter ) { - data = s.dataFilter( data, type ); - } - - // The filter can actually parse the response - if ( typeof data === "string" ) { - - // If the type is "script", eval it in global context - if ( type === "script" ) { - jQuery.globalEval( data ); - } - - // Get the JavaScript object, if JSON is used. - if ( type === "json" ) { - if ( typeof JSON === "object" && JSON.parse ) { - data = JSON.parse( data ); - } else { - data = (new Function("return " + data))(); - } - } + // Main method + ajax: function( url , s ) { + + if ( arguments.length === 1 ) { + s = url; + url = s ? s.url : undefined; } - - return data; + + return jQuery.xhr().open( s ? s.type : undefined , url ).send( undefined , s ); + }, // Serialize an array of form elements or a set of // key/values into a query string - param: function( a ) { + param: function( a, traditional ) { var s = [], - param_traditional = jQuery.param.traditional; + 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); + }; - function add( 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); + // Set traditional to true for jQuery <= 1.3.2 behavior. + if ( traditional === undefined ) { + traditional = jQuery.ajaxSettings.traditional; } - // If an array was passed in, assume that it is an array - // of form elements - if ( jQuery.isArray(a) || a.jquery ) + // If an array was passed in, assume that it is an array of form elements. + if ( jQuery.isArray(a) || a.jquery ) { // Serialize the form elements jQuery.each( a, function() { add( this.name, this.value ); }); - else - // Encode parameters from object, recursively. If - // jQuery.param.traditional is set, encode the "old" way - // (the way 1.3.2 or older did it) - jQuery.each( a, function buildParams( prefix, obj ) { - - if ( jQuery.isArray(obj) ) - jQuery.each( obj, function(i,v){ - // Due to rails' limited request param syntax, numeric array - // indices are not supported. To avoid serialization ambiguity - // issues, serialized arrays can only contain scalar values. php - // does not have this issue, but we should go with the lowest - // common denominator - add( prefix + ( param_traditional ? "" : "[]" ), v ); - }); - - else if ( typeof obj == "object" ) - if ( param_traditional ) - add( prefix, obj ); - - else - jQuery.each( obj, function(k,v){ - buildParams( prefix ? prefix + "[" + k + "]" : k, v ); - }); - - else - add( prefix, obj ); - - }); + } 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 ); + } + } // Return the resulting serialization return s.join("&").replace(r20, "+"); } +}); + +function buildParams( prefix, obj, traditional, add ) { + if ( jQuery.isArray(obj) && obj.length ) { + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + // If array item is non-scalar (array or object), encode its + // numeric index to resolve deserialization ambiguity issues. + // Note that rack (as of 1.0.0) can't currently deserialize + // nested arrays properly, and attempting to do so may cause + // a server error. Possible fixes are to modify rack's + // deserialization algorithm or to provide an option or flag + // to force array serialization to be shallow. + buildParams( prefix + "[" + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ) + "]", v, traditional, add ); + } + }); + + } else if ( !traditional && obj != null && typeof obj === "object" ) { + // If we see an array here, it is empty and should be treated as an empty + // object + if ( jQuery.isArray( obj ) || jQuery.isEmptyObject( obj ) ) { + add( prefix, "" ); + + // Serialize object item. + } else { + jQuery.each( obj, function( k, v ) { + buildParams( prefix + "[" + k + "]", v, traditional, add ); + }); + } + + } else { + // Serialize scalar item. + add( prefix, obj ); + } +} + +// This is still on the jQuery object... for now +// Want to move this to jQuery.ajax some day +jQuery.extend({ + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {} }); + +/* + * 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. + */ +if ( window.ActiveXObject ) { + jQuery.ajaxSettings.xhr = function() { + if ( window.location.protocol !== "file:" ) { + try { + return new window.XMLHttpRequest(); + } catch( xhrError ) {} + } + + try { + return new window.ActiveXObject("Microsoft.XMLHTTP"); + } catch( activeError ) {} + }; +} + +var testXHR = jQuery.ajaxSettings.xhr(); + +// Does this browser support XHR requests? +jQuery.support.ajax = !!testXHR; + +// Does this browser support crossDomain XHR requests +jQuery.support.cors = testXHR && "withCredentials" in testXHR; + +})( jQuery );