X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=ajax%2Fajax.js;h=72aa82fbafcb98b248a9f07ccce7e4ef54c0dd18;hb=c3c706d3f24dbad0fdeb80fe9caf158bd9d6de66;hp=87eadbf675339abf52e0eb8ab72260766c4b694a;hpb=8a4a1edf047f2c272f663866eb7b5fcd644d65b3;p=jquery.git

diff --git a/ajax/ajax.js b/ajax/ajax.js
index 87eadbf..72aa82f 100644
--- a/ajax/ajax.js
+++ b/ajax/ajax.js
@@ -2,87 +2,207 @@
 // Docs Here:
 // http://jquery.com/docs/ajax/
 
-if ( typeof XMLHttpRequest == 'undefined' && typeof window.ActiveXObject == 'function') {
-  var XMLHttpRequest = function() {
-    return new ActiveXObject((navigator.userAgent.toLowerCase().indexOf('msie 5') >= 0) ? 
-      "Microsoft.XMLHTTP" : "Msxml2.XMLHTTP");
-  };
-}
+/**
+ * Load HTML from a remote file and inject it into the DOM
+ */
+$.fn.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 )
+		return this.bind("load", url);
 
-$.xml = function( type, url, data, ret ) {
-  var xml = new XMLHttpRequest();
+	// Default to a GET request
+	var type = "GET";
 
-  if ( xml ) {
-    xml.open(type || "GET", url, true);
+	// If the second parameter was provided
+	if ( params ) {
+		// If it's a function
+		if ( params.constructor == Function ) {
+			// We assume that it's the callback
+			callback = params;
+			params = null;
+			
+		// Otherwise, build a param string
+		} else {
+			params = $.param( params );
+			type = "POST";
+		}
+	}
+	
+	var self = this;
+	
+	// Request the remote document
+	$.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
+				callback.apply( self, [res.responseText] );
+		});
+		
+		// Execute all the scripts inside of the newly-injected HTML
+		$("script", self).each(function(){
+			eval( this.text || this.textContent || this.innerHTML || "");
+		});
 
-    if ( data )
-      xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-
-    if ( ret )
-      xml.onreadystatechange = function() {
-        if ( xml.readyState == 4 ) ret(xml);
-      };
-
-    xml.send(data)
-  }
+	});
+	
+	return this;
 };
 
-$.httpData = function(r,type) {
-  return r.getResponseHeader("content-type").indexOf("xml") > 0 || type == "xml" ?
-    r.responseXML : r.responseText;
+/**
+ * Load a remote page using a GET request
+ */
+$.get = function( url, callback, type ) {
+	// Build and start the HTTP Request
+	$.ajax( "GET", url, null, function(r) {
+		if ( callback ) callback( $.httpData(r,type) );
+	});
 };
 
-$.get = function( url, ret, type ) {
-  $.xml( "GET", url, null, function(r) {
-    if ( ret ) ret( $.httpData(r,type) );
-  });
+/**
+ * Load a remote page using a POST request.
+ */
+$.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) );
+	});
 };
 
-$.getXML = function( url, ret ) {
-  $.get( url, ret, "xml" );
-};
+// If IE is used, create a wrapper for the XMLHttpRequest object
+if ( $.browser == "msie" )
+	XMLHttpRequest = function(){
+		return new ActiveXObject(
+			(navigator.userAgent.toLowerCase().indexOf("msie 5") >= 0) ?
+			"Microsoft.XMLHTTP" : "Msxml2.XMLHTTP"
+		);
+	};
+
+// Attach a bunch of functions for handling common AJAX events
+(function(){
+	var e = "ajaxStart.ajaxComplete.ajaxError.ajaxSuccess".split(',');
+	
+	for ( var i = 0; i < e.length; i++ ){ (function(){
+		var o = e[i];
+		$.fn[o] = function(f){return this.bind(o, f);};
+	})();}
+})();
+
+/**
+ * A common wrapper for making XMLHttpRequests
+ */
+$.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 ) {
+		ret = type.complete;
+		var success = type.success;
+		var error = type.error;
+		data = type.data;
+		url = type.url;
+		type = type.type;
+	}
+
+	// Create the request object
+	var xml = new XMLHttpRequest();
+
+	// Open the socket
+	xml.open(type || "GET", url, true);
+	
+	// Set the correct header, if data is being sent
+	if ( data )
+		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");
+
+	// Make sure the browser sends the right content length
+	if ( xml.overrideMimeType )
+		xml.setRequestHeader("Connection", "close");
 
-$.post = function( url, data, ret, type ) {
-  $.xml( "POST", url, $.param(data), function(r) {
-    if ( ret ) ret( $.httpData(r,type) );
-  });
+	// Wait for a response to come back
+	xml.onreadystatechange = function(){
+		// Socket is openend
+		if ( xml.readyState == 1 ) {
+			// Increase counter
+			$.ajax.active++;
+
+			// Show 'loader'
+			$.event.trigger( "ajaxStart" );
+		}
+
+		// Socket is closed and data is available
+		if ( xml.readyState == 4 ) {
+			// Hide loader if needed
+			if ( ! --$.ajax.active ) {
+				$.event.trigger( "ajaxComplete" );
+				$.ajax.active = 0
+			}
+
+			// Make sure that the request was successful
+			if ( $.httpSuccess( xml ) ) {
+			
+				// If a local callback was specified, fire it
+				if ( success ) success( xml );
+				
+				// Fire the global callback
+				$.event.trigger( "ajaxSuccess" );
+			
+			// Otherwise, the request was not successful
+			} else {
+				// If a local callback was specified, fire it
+				if ( error ) error( xml );
+				
+				// Fire the global callback
+				$.event.trigger( "ajaxError" );
+			}
+
+			// Process result
+			if ( ret ) ret(xml);
+		}
+	};
+
+	// Send the data
+	xml.send(data);
 };
 
-$.postXML = function( url, data, ret ) {
-  $.post( url, data, ret, "xml" );
+// Counter for holding the number of active queries
+$.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:";
 };
 
-$.param = function(a) {
-  var s = [];
-  for ( var i in a )
-    s[s.length] = i + "=" + encodeURIComponent( a[i] );
-  return s.join("&");
+// Get the data out of an XMLHttpRequest
+$.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;
 };
 
-$.fn.load = function(a,o,f) {
-  // Arrrrghhhhhhhh!!
-  // I overwrote the event plugin's .load
-  // this won't happen again, I hope -John
-  if ( a && a.constructor == Function )
-    return this.bind("load", a);
-
-  var t = "GET";
-  if ( o && o.constructor == Function ) {
-    f = o; o = null;
-  }
-  if (o != null) {
-    o = $.param(o);
-    t = "POST";
-  }
-  var self = this;
-  $.xml(t,a,o,function(h){
-  var h = h.responseText;
-    self.html(h).find("script").each(function(){
-      try {
-        eval( this.text || this.textContent || this.innerHTML );
-      } catch(e){}
-    });
-    if(f)f(h);
-  });
-  return this;
+// Serialize an array of form elements or a set of
+// key/values into a query string
+$.param = function(a) {
+	var s = [];
+	
+	// If an array was passed in, assume that it is an array
+	// of form elements
+	if ( a.constructor == Array )
+		// Serialize the form elements
+		for ( var i = 0; i < a.length; i++ )
+			s.push( a[i].name + "=" + encodeURIComponent( a[i].value ) );
+		
+	// Otherwise, assume that it's an object of key/value pairs
+	else
+		// Serialize the key/values
+		for ( var j in a )
+			s.push( j + "=" + encodeURIComponent( a[j] ) );
+	
+	// Return the resulting serialization
+	return s.join("&");
 };