X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=ajax%2Fajax.js;h=f6a1d9e20ff6fbb117616d57414a98bdcf710c45;hb=0a9c5698398f7a8347d2d5956c9d11a3eb2933d6;hp=db347432e02a58ebf0a6844ffc7b8e46cc3069be;hpb=70cab836b0d87ec1a94658411c398658780f5810;p=jquery.git diff --git a/ajax/ajax.js b/ajax/ajax.js index db34743..f6a1d9e 100644 --- a/ajax/ajax.js +++ b/ajax/ajax.js @@ -5,7 +5,7 @@ /** * Load HTML from a remote file and inject it into the DOM */ -$.fn.load = function( url, params, callback ) { +jQuery.prototype.load = function( url, params, callback ) { // I overwrote the event plugin's .load // this won't happen again, I hope -John if ( url && url.constructor == Function ) @@ -24,7 +24,7 @@ $.fn.load = function( url, params, callback ) { // Otherwise, build a param string } else { - params = $.param( params ); + params = jQuery.param( params ); type = "POST"; } } @@ -32,14 +32,14 @@ $.fn.load = function( url, params, callback ) { var self = this; // Request the remote document - $.ajax( type, url, params,function(res){ + jQuery.ajax( type, url, params,function(res){ // Inject the HTML into all the matched elements self.html(res.responseText).each(function(){ // If a callback function was provided if ( callback && callback.constructor == Function ) // Execute it within the context of the element - $.apply( self, callback, [res.responseText] ); + callback.apply( self, [res.responseText] ); }); // Execute all the scripts inside of the newly-injected HTML @@ -55,49 +55,46 @@ $.fn.load = function( url, params, callback ) { /** * Load a remote page using a GET request */ -$.get = function( url, callback, type ) { +jQuery.get = function( url, callback, type ) { // Build and start the HTTP Request - $.ajax( "GET", url, null, function(r) { - if ( callback ) callback( $.httpData(r,type) ); + jQuery.ajax( "GET", url, null, function(r) { + if ( callback ) callback( jQuery.httpData(r,type) ); }); }; /** * Load a remote page using a POST request. */ -$.post = function( url, data, callback, type ) { +jQuery.post = function( url, data, callback, type ) { // Build and start the HTTP Request - $.ajax( "POST", url, $.param(data), function(r) { - if ( callback ) callback( $.httpData(r,type) ); + jQuery.ajax( "POST", url, jQuery.param(data), function(r) { + if ( callback ) callback( jQuery.httpData(r,type) ); }); }; // If IE is used, create a wrapper for the XMLHttpRequest object -if ( $.browser == "msie" ) +if ( jQuery.browser == "msie" ) XMLHttpRequest = function(){ return new ActiveXObject( - (navigator.userAgent.toLowerCase().indexOf('msie 5') >= 0) ? + (navigator.userAgent.toLowerCase().indexOf("msie 5") >= 0) ? "Microsoft.XMLHTTP" : "Msxml2.XMLHTTP" ); }; -// Counter for holding the number of active queries -$.xmlActive = 0; - // Attach a bunch of functions for handling common AJAX events (function(){ - var e = ['ajaxStart','ajaxComplete','ajaxError','ajaxSuccess']; + var e = "ajaxStart,ajaxStop,ajaxComplete,ajaxError,ajaxSuccess".split(','); for ( var i = 0; i < e.length; i++ ){ (function(){ var o = e[i]; - $.fn[o] = function(f){return this.bind(o, f);}; + jQuery.fn[o] = function(f){return this.bind(o, f);}; })();} })(); /** * A common wrapper for making XMLHttpRequests */ -$.ajax = function( type, url, data, ret ) { +jQuery.ajax = function( type, url, data, ret ) { // If only a single argument was passed in, // assume that it is a object of key/value pairs if ( !url ) { @@ -108,6 +105,10 @@ $.ajax = function( type, url, data, ret ) { url = type.url; type = type.type; } + + // Watch for a new set of requests + if ( ! jQuery.ajax.active++ ) + jQuery.event.trigger( "ajaxStart" ); // Create the request object var xml = new XMLHttpRequest(); @@ -117,46 +118,27 @@ $.ajax = function( type, url, data, ret ) { // Set the correct header, if data is being sent if ( data ) - xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); + xml.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); // Set header so calling script knows that it's an XMLHttpRequest - xml.setRequestHeader('X-Requested-With', 'XMLHttpRequest'); + xml.setRequestHeader("X-Requested-With", "XMLHttpRequest"); // Make sure the browser sends the right content length if ( xml.overrideMimeType ) - xml.setRequestHeader('Connection', 'close'); + xml.setRequestHeader("Connection", "close"); // Wait for a response to come back xml.onreadystatechange = function(){ - // Socket is openend - if ( xml.readyState == 1 ) { - // Increase counter - $.xmlActive++; - - // Show loader if needed - if ( $.xmlActive >= 1 && $.xmlCreate ) - $.event.trigger( 'ajaxStart' ); - } - - // Socket is closed and data is available + // The transfer is complete and the data is available if ( xml.readyState == 4 ) { - // Decrease counter - $.xmlActive--; - - // Hide loader if needed - if ( $.xmlActive <= 0 && $.xmlDestroy ) { - $.event.trigger( 'ajaxComplete' ); - $.xmlActive = 0 - } - // Make sure that the request was successful - if ( $.httpSuccess( xml ) ) { + if ( jQuery.httpSuccess( xml ) ) { // If a local callback was specified, fire it if ( success ) success( xml ); // Fire the global callback - $.event.trigger( 'ajaxSuccess' ); + jQuery.event.trigger( "ajaxSuccess" ); // Otherwise, the request was not successful } else { @@ -164,8 +146,15 @@ $.ajax = function( type, url, data, ret ) { if ( error ) error( xml ); // Fire the global callback - $.event.trigger( 'ajaxError' ); + jQuery.event.trigger( "ajaxError" ); } + + // The request was completed + jQuery.event.trigger( "ajaxComplete" ); + + // Handle the global AJAX counter + if ( ! --jQuery.ajax.active ) + jQuery.event.trigger( "ajaxStop" ); // Process result if ( ret ) ret(xml); @@ -176,22 +165,31 @@ $.ajax = function( type, url, data, ret ) { xml.send(data); }; +// Counter for holding the number of active queries +jQuery.ajax.active = 0; + // Determines if an XMLHttpRequest was successful or not -$.httpSuccess = function(r) { - return ( r.status && ( r.status >= 200 && r.status < 300 ) || - r.status == 304 ) || !r.status && location.protocol == 'file:'; +jQuery.httpSuccess = function(r) { + try { + return r.status ? + ( r.status >= 200 && r.status < 300 ) || r.status == 304 : + location.protocol == "file:"; + } catch(e){} + return false; }; -// Get the data out of an XMLHttpRequest -$.httpData = function(r,type) { - // Check the headers, or watch for a force override - return r.getResponseHeader("content-type").indexOf("xml") > 0 || - type == "xml" ? r.responseXML : r.responseText; +// Get the data out of an XMLHttpRequest. +// Return parsed XML if content-type header is "xml" and type is "xml" or omitted, +// otherwise return plain text. +jQuery.httpData = function(r,type) { + var ct = r.getResponseHeader("content-type"); + var xml = ( !type || type == "xml" ) && ct && ct.indexOf("xml") >= 0; + return xml ? r.responseXML : r.responseText; }; // Serialize an array of form elements or a set of // key/values into a query string -$.param = function(a) { +jQuery.param = function(a) { var s = []; // If an array was passed in, assume that it is an array