From 456f0fe5985eaad42eba456b9ff710771669607c Mon Sep 17 00:00:00 2001
From: John Resig <jeresig@gmail.com>
Date: Mon, 3 Sep 2007 14:53:09 +0000
Subject: [PATCH] Added namespaced events to bind, unbind, and trigger. This
 allows you to deal with event handlers of a specific "class" (great for
 plugins).

---
 src/event/event.js     | 38 +++++++++++++++++++++++++++++---------
 src/event/eventTest.js | 24 +++++++++++++++++++++++-
 2 files changed, 52 insertions(+), 10 deletions(-)

diff --git a/src/event/event.js b/src/event/event.js
index 3df1ae71..6224d13b 100644
--- a/src/event/event.js
+++ b/src/event/event.js
@@ -12,14 +12,14 @@ jQuery.event = {
 		// around, causing it to be cloned in the process
 		if ( jQuery.browser.msie && element.setInterval != undefined )
 			element = window;
-		
+
 		// Make sure that the function being executed has a unique ID
 		if ( !handler.guid )
 			handler.guid = this.guid++;
 			
 		// if data is passed, bind to handler 
 		if( data != undefined ) { 
-        	// Create temporary function pointer to original handler 
+        		// Create temporary function pointer to original handler 
 			var fn = handler; 
 
 			// Create unique handler function, wrapped around original handler 
@@ -35,6 +35,11 @@ jQuery.event = {
 			handler.guid = fn.guid;
 		}
 
+		// Namespaced event handlers
+		var parts = type.split(".");
+		type = parts[0];
+		handler.type = parts[1];
+
 		// Init the element's event structure
 		if (!element.$events)
 			element.$events = {};
@@ -82,6 +87,12 @@ jQuery.event = {
 	remove: function(element, type, handler) {
 		var events = element.$events, ret, index;
 
+		// Namespaced event handlers
+		if ( typeof type == "string" ) {
+			var parts = type.split(".");
+			type = parts[0];
+		}
+
 		if ( events ) {
 			// type is actually an event object here
 			if ( type && type.type ) {
@@ -101,7 +112,9 @@ jQuery.event = {
 				// remove all handlers for the given type
 				else
 					for ( handler in element.$events[type] )
-						delete events[type][handler];
+						// Handle the removal of namespaced events
+						if ( !parts[1] || events[type][handler].type == parts[1] )
+							delete events[type][handler];
 
 				// remove generic event handler if no more handlers exist
 				for ( ret in events[type] ) break;
@@ -177,6 +190,10 @@ jQuery.event = {
 		// Empty object is for triggered events with no data
 		event = jQuery.event.fix( event || window.event || {} ); 
 
+		// Namespaced event handlers
+		var parts = event.type.split(".");
+		event.type = parts[0];
+
 		var c = this.$events && this.$events[event.type], args = Array.prototype.slice.call( arguments, 1 );
 		args.unshift( event );
 
@@ -186,14 +203,17 @@ jQuery.event = {
 			args[0].handler = c[j];
 			args[0].data = c[j].data;
 
-			var tmp = c[j].apply( this, args );
+			// Filter the functions by class
+			if ( !parts[1] || c[j].type == parts[1] ) {
+				var tmp = c[j].apply( this, args );
 
-			if ( val !== false )
-				val = tmp;
+				if ( val !== false )
+					val = tmp;
 
-			if ( tmp === false ) {
-				event.preventDefault();
-				event.stopPropagation();
+				if ( tmp === false ) {
+					event.preventDefault();
+					event.stopPropagation();
+				}
 			}
 		}
 
diff --git a/src/event/eventTest.js b/src/event/eventTest.js
index 7ae9e6d3..cacfdeb6 100644
--- a/src/event/eventTest.js
+++ b/src/event/eventTest.js
@@ -1,7 +1,7 @@
 module("event");
 
 test("bind()", function() {
-	expect(11);
+	expect(15);
 
 	var handler = function(event) {
 		ok( event.data, "bind() with data, check passed data exists" );
@@ -45,6 +45,28 @@ test("bind()", function() {
 	$("select").each(function(i){
 		$(this).bind('change', i, selectOnChange);
 	}).trigger('change');
+
+	reset();
+
+        $("#firstp").bind("click",function(e){
+		ok(true, "Normal click triggered");
+        });
+
+        $("#firstp").bind("click.test",function(e){
+		ok(true, "Namespaced click triggered");
+        });
+
+	// Trigger both bound fn (2)
+        $("#firstp").trigger("click");
+
+	// Trigger one bound fn (1)
+        $("#firstp").trigger("click.test");
+
+	// Remove only the one fn
+        $("#firstp").unbind("click.test");
+
+	// Trigger the remaining fn (1)
+        $("#firstp").trigger("click");
 });
 
 test("click()", function() {