Made sure that return false works in .live() along with the event object being passed...
[jquery.git] / src / event.js
index d5ca6cd..0710b7b 100644 (file)
@@ -13,7 +13,7 @@ jQuery.event = {
 
                // For whatever reason, IE has trouble passing the window object
                // around, causing it to be cloned in the process
-               if ( jQuery.browser.msie && elem.setInterval )
+               if ( elem.setInterval && elem != window )
                        elem = window;
 
                // Make sure that the function being executed has a unique ID
@@ -21,7 +21,7 @@ jQuery.event = {
                        handler.guid = this.guid++;
 
                // if data is passed, bind to handler
-               if( data != undefined ) {
+               if ( data !== undefined ) {
                        // Create temporary function pointer to original handler
                        var fn = handler;
 
@@ -40,8 +40,9 @@ jQuery.event = {
                        handle = jQuery.data(elem, "handle") || jQuery.data(elem, "handle", function(){
                                // Handle the second event of a trigger and when
                                // an event is called after a page has unloaded
-                               if ( typeof jQuery != "undefined" && !jQuery.event.triggered )
-                                       return jQuery.event.handle.apply(arguments.callee.elem, arguments);
+                               return typeof jQuery !== "undefined" && !jQuery.event.triggered ?
+                                       jQuery.event.handle.apply(arguments.callee.elem, arguments) :
+                                       undefined;
                        });
                // Add elem as a property of the handle function
                // This is to prevent a memory leak with non-native
@@ -52,12 +53,15 @@ jQuery.event = {
                // jQuery(...).bind("mouseover mouseout", fn);
                jQuery.each(types.split(/\s+/), function(index, type) {
                        // Namespaced event handlers
-                       var parts = type.split(".");
-                       type = parts[0];
-                       handler.type = parts[1];
+                       var namespaces = type.split(".");
+                       type = namespaces.shift();
+                       handler.type = namespaces.slice().sort().join(".");
 
                        // Get the current list of functions bound to this event
                        var handlers = events[type];
+                       
+                       if ( jQuery.event.specialAll[type] )
+                               jQuery.event.specialAll[type].setup.call(elem, data, namespaces);
 
                        // Init the event handler queue
                        if (!handlers) {
@@ -66,7 +70,7 @@ jQuery.event = {
                                // Check for a special event handler
                                // Only use addEventListener/attachEvent if the special
                                // events handler returns false
-                               if ( !jQuery.event.special[type] || jQuery.event.special[type].setup.call(elem,data) === false ) {
+                               if ( !jQuery.event.special[type] || jQuery.event.special[type].setup.call(elem, data, namespaces) === false ) {
                                        // Bind the global event handler to the element
                                        if (elem.addEventListener)
                                                elem.addEventListener(type, handle, false);
@@ -99,7 +103,7 @@ jQuery.event = {
 
                if ( events ) {
                        // Unbind all events for the element
-                       if ( types == undefined || (typeof types == "string" && types.charAt(0) == ".") )
+                       if ( types === undefined || (typeof types === "string" && types.charAt(0) == ".") )
                                for ( var type in events )
                                        this.remove( elem, type + (types || "") );
                        else {
@@ -113,8 +117,9 @@ jQuery.event = {
                                // jQuery(...).unbind("mouseover mouseout", fn);
                                jQuery.each(types.split(/\s+/), function(index, type){
                                        // Namespaced event handlers
-                                       var parts = type.split(".");
-                                       type = parts[0];
+                                       var namespaces = type.split(".");
+                                       type = namespaces.shift();
+                                       var namespace = RegExp("(^|\\.)" + namespaces.slice().sort().join(".*\\.") + "(\\.|$)");
 
                                        if ( events[type] ) {
                                                // remove the given handler for the given type
@@ -125,13 +130,16 @@ jQuery.event = {
                                                else
                                                        for ( handler in events[type] )
                                                                // Handle the removal of namespaced events
-                                                               if ( !parts[1] || events[type][handler].type == parts[1] )
+                                                               if ( namespace.test(events[type][handler].type) )
                                                                        delete events[type][handler];
+                                                                       
+                                               if ( jQuery.event.specialAll[type] )
+                                                       jQuery.event.specialAll[type].teardown.call(elem, namespaces);
 
                                                // remove generic event handler if no more handlers exist
                                                for ( ret in events[type] ) break;
                                                if ( !ret ) {
-                                                       if ( !jQuery.event.special[type] || jQuery.event.special[type].teardown.call(elem) === false ) {
+                                                       if ( !jQuery.event.special[type] || jQuery.event.special[type].teardown.call(elem, namespaces) === false ) {
                                                                if (elem.removeEventListener)
                                                                        elem.removeEventListener(type, jQuery.data(elem, "handle"), false);
                                                                else if (elem.detachEvent)
@@ -155,71 +163,76 @@ jQuery.event = {
                }
        },
 
-       trigger: function(type, data, elem, donative, extra) {
-               // Clone the incoming data, if any
-               data = jQuery.makeArray(data);
-
-               if ( type.indexOf("!") >= 0 ) {
-                       type = type.slice(0, -1);
-                       var exclusive = true;
-               }
-
+       trigger: function( e, data, elem, donative, extra, dohandlers) {
+               // Event object or event type
+               var type = e.type || e;
+               
                // Handle a global trigger
                if ( !elem ) {
                        // Only trigger if we've ever bound an event for it
                        if ( this.global[type] )
                                jQuery.each( jQuery.cache, function(){
                                        if ( this.events && this.events[type] )
-                                               jQuery.event.trigger( type, data, this.handle.elem );
+                                               jQuery.event.trigger( e, data, this.handle.elem, false );
                                });
 
                // Handle triggering a single element
                } else {
+
                        // don't do events on text and comment nodes
                        if ( elem.nodeType == 3 || elem.nodeType == 8 )
                                return undefined;
 
-                       var val, ret, fn = jQuery.isFunction( elem[ type ] || null ),
-                               // Check to see if we need to provide a fake event, or not
-                               event = !data[0] || !data[0].preventDefault;
-
-                       // Pass along a fake event
-                       if ( event ) {
-                               data.unshift({
-                                       type: type,
-                                       target: elem,
-                                       preventDefault: function(){},
-                                       stopPropagation: function(){},
-                                       stopImmediatePropagation:stopImmediatePropagation,
-                                       timeStamp: now()
-                               });
-                               data[0][expando] = true; // no need to fix fake event
+                       // Clone the incoming data, if any
+                       data = jQuery.makeArray(data);
+                       
+                       if ( type.indexOf("!") >= 0 ) {
+                               type = type.slice(0, -1);
+                               var exclusive = true;
+                       }
+                       
+                       e = typeof e === "object" ?
+                               // jQuery.Event object
+                               e[expando] ? e :
+                               // Object literal
+                               jQuery.extend( jQuery.Event(type), e ) :
+                               // Just the event type (string)
+                               jQuery.Event(type);
+                               
+                       e.target = e.target || elem;
+                       e.currentTarget = elem;
+                       e.exclusive = exclusive;
+                       
+                       data.unshift( e );
+
+                       var val, ret, fn = jQuery.isFunction( elem[ type ] );
+
+                       if ( dohandlers !== false ) {
+                               // Trigger the event, it is assumed that "handle" is a function
+                               var handle = jQuery.data(elem, "handle");
+                               if ( handle )
+                                       val = handle.apply( elem, data );
+
+                               // Handle triggering native .onfoo handlers (and on links since we don't call .click() for links)
+                               if ( (!fn || (jQuery.nodeName(elem, 'a') && type == "click")) && elem["on"+type] && elem["on"+type].apply( elem, data ) === false )
+                                       val = false;
                        }
 
-                       // Enforce the right trigger type
-                       data[0].type = type;
-                       if ( exclusive )
-                               data[0].exclusive = true;
-
-                       // Trigger the event, it is assumed that "handle" is a function
-                       var handle = jQuery.data(elem, "handle");
-                       if ( handle )
-                               val = handle.apply( elem, data );
-
-                       // Handle triggering native .onfoo handlers (and on links since we don't call .click() for links)
-                       if ( (!fn || (jQuery.nodeName(elem, 'a') && type == "click")) && elem["on"+type] && elem["on"+type].apply( elem, data ) === false )
-                               val = false;
+                       if ( donative !== false && val !== false ) {
+                               var parent = elem.parentNode || elem.ownerDocument;
+                               if ( parent )
+                                       jQuery.event.trigger(e, data, parent, donative);
+                       }
 
                        // Extra functions don't get the custom event object
-                       if ( event )
-                               data.shift();
+                       data.shift();
 
                        // Handle triggering of extra function
                        if ( extra && jQuery.isFunction( extra ) ) {
                                // call the extra function and tack the current return value on the end for possible inspection
                                ret = extra.apply( elem, val == null ? data : data.concat( val ) );
                                // if anything is returned, give it precedence and have it overwrite the previous value
-                               if (ret !== undefined)
+                               if ( ret !== undefined )
                                        val = ret;
                        }
 
@@ -240,16 +253,18 @@ jQuery.event = {
 
        handle: function(event) {
                // returned undefined or false
-               var val, ret, namespace, all, handlers;
+               var val, ret, all, handlers;
 
                event = arguments[0] = jQuery.event.fix( event || window.event );
 
                // Namespaced event handlers
-               namespace = event.type.split(".");
-               event.type = namespace[0];
-               namespace = namespace[1];
+               var namespaces = event.type.split(".");
+               event.type = namespaces.shift();
+
                // Cache this now, all = true means, any handler
-               all = !namespace && !event.exclusive;
+               all = !namespaces.length && !event.exclusive;
+               
+               var namespace = RegExp("(^|\\.)" + namespaces.slice().sort().join(".*\\.") + "(\\.|$)");
 
                handlers = ( jQuery.data(this, "events") || {} )[event.type];
 
@@ -257,7 +272,7 @@ jQuery.event = {
                        var handler = handlers[j];
 
                        // Filter the functions by class
-                       if ( all || handler.type == namespace ) {
+                       if ( all || namespace.test(handler.type) ) {
                                // Pass in a reference to the handler function itself
                                // So that we can later remove it
                                event.handler = handler;
@@ -282,7 +297,7 @@ jQuery.event = {
                return val;
        },
 
-       props: "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode metaKey newValue originalTarget pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target timeStamp toElement type view wheelDelta which".split(" "),
+       props: "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode metaKey newValue originalTarget pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target toElement view wheelDelta which".split(" "),
 
        fix: function(event) {
                if ( event[expando] )
@@ -291,38 +306,13 @@ jQuery.event = {
                // store a copy of the original event object
                // and "clone" to set read-only properties
                var originalEvent = event;
-               event = { originalEvent: originalEvent };
+               event = jQuery.Event( originalEvent );
 
                for ( var i = this.props.length, prop; i; ){
                        prop = this.props[ --i ];
                        event[ prop ] = originalEvent[ prop ];
                }
 
-               // Mark it as fixed
-               event[expando] = true;
-
-               // add preventDefault and stopPropagation since
-               // they will not work on the clone
-               event.preventDefault = function() {
-                       // if preventDefault exists run it on the original event
-                       if (originalEvent.preventDefault)
-                               originalEvent.preventDefault();
-                       // otherwise set the returnValue property of the original event to false (IE)
-                       originalEvent.returnValue = false;
-               };
-               event.stopPropagation = function() {
-                       // if stopPropagation exists run it on the original event
-                       if (originalEvent.stopPropagation)
-                               originalEvent.stopPropagation();
-                       // otherwise set the cancelBubble property of the original event to true (IE)
-                       originalEvent.cancelBubble = true;
-               };
-
-               event.stopImmediatePropagation = stopImmediatePropagation;
-
-               // Fix timeStamp
-               event.timeStamp = event.timeStamp || now();
-
                // Fix target property, if necessary
                if ( !event.target )
                        event.target = event.srcElement || document; // Fixes #1925 where srcElement might not be defined either
@@ -371,47 +361,109 @@ jQuery.event = {
                        setup: bindReady,
                        teardown: function() {}
                }
+       },
+       
+       specialAll: {
+               live: {
+                       setup: function( selector, namespaces ){
+                               jQuery.event.add( this, namespaces[0], liveHandler );
+                       },
+                       teardown:  function( namespaces ){
+                               if ( namespaces.length ) {
+                                       var remove = 0, name = RegExp("(^|\\.)" + namespaces[0] + "(\\.|$)");
+                                       
+                                       jQuery.each( (jQuery.data(this, "events").live || {}), function(){
+                                               if ( name.test(this.type) )
+                                                       remove++;
+                                       });
+                                       
+                                       if ( remove <= 1 )
+                                               jQuery.event.remove( this, namespaces[0], liveHandler );
+                               }
+                       }
+               }
        }
 };
 
-function stopImmediatePropagation(){
-       this._sip = 1;
-       this.stopPropagation();
-}
-
-if ( !jQuery.browser.msie ){   
-       // Checks if an event happened on an element within another element
-       // Used in jQuery.event.special.mouseenter and mouseleave handlers
-       var withinElement = function(event) {
-               // Check if mouse(over|out) are still within the same parent element
-               var parent = event.relatedTarget;
-               // Traverse up the tree
-               while ( parent && parent != this )
-                       try { parent = parent.parentNode; }
-                       catch(e) { parent = this; }
+jQuery.Event = function( src ){
+       // Allow instantiation without the 'new' keyword
+       if( !this.preventDefault )
+               return new jQuery.Event(src);
+       
+       // Event object
+       if( src && src.type ){
+               this.originalEvent = src;
+               this.type = src.type;
                
-               if( parent != this ){
-                       // set the correct event type
-                       event.type = event.data;
-                       // handle event if we actually just moused on to a non sub-element
-                       jQuery.event.handle.apply( this, arguments );
-               }
-       };
+               // Fix timeStamp
+               this.timeStamp = src.timeStamp || now();
+       // Event type
+       }else
+               this.type = src;
+
+       // Mark it as fixed
+       this[expando] = true;
+};
+
+jQuery.Event.prototype = {
+       // add preventDefault and stopPropagation since
+       // they will not work on the clone
+       preventDefault: function() {
+               var e = this.originalEvent;
+               if( !e )
+                       return;
+               // if preventDefault exists run it on the original event
+               if (e.preventDefault)
+                       e.preventDefault();
+               // otherwise set the returnValue property of the original event to false (IE)
+               e.returnValue = false;
+       },
+       stopPropagation: function() {
+               var e = this.originalEvent;
+               if( !e )
+                       return;
+               // if stopPropagation exists run it on the original event
+               if (e.stopPropagation)
+                       e.stopPropagation();
+               // otherwise set the cancelBubble property of the original event to true (IE)
+               e.cancelBubble = true;
+       },
+       stopImmediatePropagation:function(){
+               this._sip = true;
+               this.stopPropagation();
+       }
+};
+// Checks if an event happened on an element within another element
+// Used in jQuery.event.special.mouseenter and mouseleave handlers
+var withinElement = function(event) {
+       // Check if mouse(over|out) are still within the same parent element
+       var parent = event.relatedTarget;
+       // Traverse up the tree
+       while ( parent && parent != this )
+               try { parent = parent.parentNode; }
+               catch(e) { parent = this; }
        
-       jQuery.each({ 
-               mouseover: 'mouseenter', 
-               mouseout: 'mouseleave'
-       }, function( orig, fix ){
-               jQuery.event.special[ fix ] = {
-                       setup: function(){
-                               jQuery.event.add( this, orig, withinElement, fix );
-                       },
-                       teardown: function(){
-                               jQuery.event.remove( this, orig, withinElement );
-                       }
-               };                         
-       });
-}
+       if( parent != this ){
+               // set the correct event type
+               event.type = event.data;
+               // handle event if we actually just moused on to a non sub-element
+               jQuery.event.handle.apply( this, arguments );
+       }
+};
+       
+jQuery.each({ 
+       mouseover: 'mouseenter', 
+       mouseout: 'mouseleave'
+}, function( orig, fix ){
+       jQuery.event.special[ fix ] = {
+               setup: function(){
+                       jQuery.event.add( this, orig, withinElement, fix );
+               },
+               teardown: function(){
+                       jQuery.event.remove( this, orig, withinElement );
+               }
+       };                         
+});
 
 jQuery.fn.extend({
        bind: function( type, data, fn ) {
@@ -485,9 +537,38 @@ jQuery.fn.extend({
                        jQuery.readyList.push( function() { return fn.call(this, jQuery); } );
 
                return this;
+       },
+       
+       live: function( type, fn ){
+               jQuery(document).bind( liveConvert(type, this.selector), this.selector, fn );
+               return this;
+       },
+       
+       die: function( type, fn ){
+               jQuery(document).unbind( liveConvert(type, this.selector), fn );
+               return this;
        }
 });
 
+function liveHandler( event ){
+       var check = RegExp("(^|\\.)" + event.type + "(\\.|$)"), stop = true;
+       jQuery.each(jQuery.data(this, "events").live || [], function(i, fn){
+               if ( check.test(fn.type) ) {
+                       var elem = jQuery(event.target).closest(fn.data)[0];
+                       if ( elem ) {
+                               var ret = jQuery.event.trigger( event.type, [event, fn.data], elem, false, fn, false );
+                               if ( ret === false )
+                                       stop = false;
+                       }
+               }
+       });
+       return stop;
+}
+
+function liveConvert(type, selector){
+       return ["live", type, selector.replace(/\./g, "_")].join(".");
+}
+
 jQuery.extend({
        isReady: false,
        readyList: [],
@@ -521,53 +602,39 @@ function bindReady(){
        if ( readyBound ) return;
        readyBound = true;
 
-       // Mozilla, Opera (see further below for it) and webkit nightlies currently support this event
-       if ( document.addEventListener && !jQuery.browser.opera)
+       // Mozilla, Opera and webkit nightlies currently support this event
+       if ( document.addEventListener ) {
                // Use the handy event callback
-               document.addEventListener( "DOMContentLoaded", jQuery.ready, false );
-
-       // If IE is used and is not in a frame
-       // Continually check to see if the document is ready
-       if ( jQuery.browser.msie && window == top ) (function(){
-               if (jQuery.isReady) return;
-               try {
-                       // If IE is used, use the trick by Diego Perini
-                       // http://javascript.nwbox.com/IEContentLoaded/
-                       document.documentElement.doScroll("left");
-               } catch( error ) {
-                       setTimeout( arguments.callee, 0 );
-                       return;
-               }
-               // and execute any waiting functions
-               jQuery.ready();
-       })();
-
-       if ( jQuery.browser.opera )
-               document.addEventListener( "DOMContentLoaded", function () {
-                       if (jQuery.isReady) return;
-                       for (var i = 0; i < document.styleSheets.length; i++)
-                               if (document.styleSheets[i].disabled) {
-                                       setTimeout( arguments.callee, 0 );
-                                       return;
-                               }
-                       // and execute any waiting functions
+               document.addEventListener( "DOMContentLoaded", function(){
+                       document.removeEventListener( "DOMContentLoaded", arguments.callee, false );
                        jQuery.ready();
-               }, false);
-
-       if ( jQuery.browser.safari ) {
-               var numStyles;
-               (function(){
-                       if (jQuery.isReady) return;
-                       if ( document.readyState != "loaded" && document.readyState != "complete" ) {
-                               setTimeout( arguments.callee, 0 );
-                               return;
+               }, false );
+
+       // If IE event model is used
+       } else if ( document.attachEvent ) {
+               // ensure firing before onload,
+               // maybe late but safe also for iframes
+               document.attachEvent("onreadystatechange", function(){
+                       if ( document.readyState === "complete" ) {
+                               document.detachEvent( "onreadystatechange", arguments.callee );
+                               jQuery.ready();
                        }
-                       if ( numStyles === undefined )
-                               numStyles = jQuery("style, link[rel=stylesheet]").length;
-                       if ( document.styleSheets.length != numStyles ) {
+               });
+
+               // If IE and not an iframe
+               // continually check to see if the document is ready
+               if ( document.documentElement.doScroll && !window.frameElement ) (function(){
+                       if ( jQuery.isReady ) return;
+
+                       try {
+                               // If IE is used, use the trick by Diego Perini
+                               // http://javascript.nwbox.com/IEContentLoaded/
+                               document.documentElement.doScroll("left");
+                       } catch( error ) {
                                setTimeout( arguments.callee, 0 );
                                return;
                        }
+
                        // and execute any waiting functions
                        jQuery.ready();
                })();