Added some final global variable tweaks - no more namespace leaking!
[jquery.git] / ajax / ajax.js
index bd08f83..257ae02 100644 (file)
@@ -3,29 +3,69 @@
 // 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) ? 
+       XMLHttpRequest = function() {
+               return new ActiveXObject((navigator.userAgent.toLowerCase().indexOf('msie 5') >= 0) ?
                        "Microsoft.XMLHTTP" : "Msxml2.XMLHTTP");
        };
 }
 
+//
+// Counter for holding the active query's
+$.xmlActive=0;
+
 $.xml = function( type, url, data, ret ) {
        var xml = new XMLHttpRequest();
 
        if ( xml ) {
+               //
+               // Increase the query counter
+               $.xmlActive++;
+
+               //
+               // Show loader if needed
+               if ($.xmlCreate) {
+                       $.xmlCreate();
+               }
+
+               //
+               // Open the socket
                xml.open(type || "GET", url, true);
 
-               if ( data )
+               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');
+
+               /* Force "Connection: close" for Mozilla browsers to work around
+                * a bug where XMLHttpReqeuest sends an incorrect Content-length
+                * header. See Mozilla Bugzilla #246651.
+                */
+               if ( xml.overrideMimeType ) {
+                       xml.setRequestHeader('Connection', 'close');
+               }
 
                xml.onreadystatechange = function() {
                        if ( xml.readyState == 4 ) {
-                               if ( ret ) ret(xml);
-                               $.triggerAJAX( $.httpData(xml) );
+                               if ( ret ) { ret(xml); }
+
+                               //
+                               // Decrease counter
+                               $.xmlActive--;
+
+                               //
+                               // Hide loader if needed
+                               if ($.xmlActive <= 0) {
+                                       if ($.xmlDestroy) {
+                                               $.xmlDestroy();
+                                       }
+                               }
                        }
                };
 
-               xml.send(data)
+               xml.send(data);
        }
 };
 
@@ -36,7 +76,7 @@ $.httpData = function(r,type) {
 
 $.get = function( url, ret, type ) {
        $.xml( "GET", url, null, function(r) {
-               if ( ret ) ret( $.httpData(r,type) );
+               if ( ret ) { ret( $.httpData(r,type) ); }
        });
 };
 
@@ -46,7 +86,7 @@ $.getXML = function( url, ret ) {
 
 $.post = function( url, data, ret, type ) {
        $.xml( "POST", url, $.param(data), function(r) {
-               if ( ret ) ret( $.httpData(r,type) );
+               if ( ret ) { ret( $.httpData(r,type) ); }
        });
 };
 
@@ -54,41 +94,17 @@ $.postXML = function( url, data, ret ) {
        $.post( url, data, ret, "xml" );
 };
 
-// Global AJAX Event Binding
-// Requested here:
-// http://jquery.com/discuss/2006-March/000415/
-
-$.fn.handleAJAX = function( callback ) {
-       $.ajaxHandles = $.merge( $.ajaxHandles, this.cur );
-       return this.bind( 'ajax', callback );
-};
-
-$.ajaxHandles = [];
-$.triggerAJAX = function(data){
-       for ( var i = 0; i < $.ajaxHandles.length; i++ )
-               triggerEvent( $.ajaxHandles[i], 'ajax', [data] );
-};
-
-// Dynamic Form Submission
-// Based upon the mailing list post at:
-// http://jquery.com/discuss/2006-March/000424/
-
-$.fn.serialize = function(callback) {
-       return this.each(function(){
-               var a = {};
-               $(this)
-                       .find("input:checked,hidden,text,option[@selected],textarea")
-                       .filter(":enabled").each(function() {
-                               a[ this.name || this.id || this.parentNode.name || this.parentNode.id ] = this.value;
-                       });
-               $.xml( this.method || "GET", this.action || "", $.param(a), callback );
-       });
-};
-
 $.param = function(a) {
        var s = [];
-       for ( var i in a )
-       s[s.length] = i + "=" + encodeURIComponent( a[i] );
+       if (a && typeof a == 'object' && a.constructor == Array) {
+               for ( var i=0; i < a.length; i++ ) {
+                       s[s.length] = a[i].name + "=" + encodeURIComponent( a[i].value );
+               }
+       } else {
+               for ( var j in a ) {
+                       s[s.length] = j + "=" + encodeURIComponent( a[j] );
+               }
+       }
        return s.join("&");
 };
 
@@ -96,27 +112,69 @@ $.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 )
+       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) {
+       if (o !== null) {
                o = $.param(o);
                t = "POST";
        }
        var self = this;
        $.xml(t,a,o,function(h){
-               var h = h.responseText;
+               h = h.responseText;
                self.html(h).find("script").each(function(){
                        try {
-                               eval( this.text || this.textContent || this.innerHTML );
+                               $.eval( this.text || this.textContent || this.innerHTML );
                        } catch(e){}
                });
-               if(f)f(h);
+               if(f){f(h);}
        });
        return this;
 };
+
+/**
+ * function:   $.fn.formValues
+ * usage:              $('#frmLogin').formValues()
+ * docs:                       Gets the form values and creates a key=>value array of the found values (only for ENABLED elements!)
+ */
+$.fn.formValues = function() {
+       var a = [];
+       this.find("input[@type='submit'],input[@type='hidden'],textarea,input[@checked],input[@type='password'],input[@type='text'],option[@selected]").filter(":enabled").each(function() {
+                       var o = {};
+                       o.name = this.name || this.id || this.parentNode.name || this.parentNode.id;
+                       o.value = this.value;
+                       a.push(o);
+               });
+       return a;
+};
+
+/**
+ * function:   $.update
+ * usage:              $.update('someJQueryObject', 'someurl', 'array');
+ * docs:                       Mimics the ajaxUpdater from prototype. Posts the key=>value array to the url and
+ *                                     puts the results from that call in the jQuery object specified.
+ *                                     --> If you set the blnNoEval to true, the script tags are NOT evaluated.
+ */
+$.update = function(objElement, strURL, arrValues, fncCallback) {
+       $.post(strURL, arrValues, function(strHTML) {
+               //
+               // Update the element with the new HTML
+               objElement.html(strHTML);
+
+               //
+               // Evaluate the scripts
+               objElement.html(strHTML).find("script").each(function(){
+                       try { $.eval( this.text || this.textContent || this.innerHTML ); } catch(e){}
+               });
+
+               //
+               // Callback handler
+               if (fncCallback) { fncCallback(); }
+       });
+};