Widget: Create eventNamespace property instead of constantly rebuilding it.

Author: scottgonzalez

tests/unit/widget/widget_core.js

@@ -749,11 +749,11 @@ test( "_on() with delegate", function() {
 	$.ui.testWidget();
 });
 
-test( "_bind() to common element", function() {
+test( "_on() to common element", function() {
 	expect( 1 );
 	$.widget( "ui.testWidget", {
 		_create: function() {
-			this._bind( this.document, {
+			this._on( this.document, {
 				"customevent": "_handler"
 			});
 		},

ui/jquery.ui.widget.js

@@ -211,11 +211,12 @@ $.Widget.prototype = {
 	_createWidget: function( options, element ) {
 		element = $( element || this.defaultElement || this )[ 0 ];
 		this.element = $( element );
+		this.uuid = uuid++;
+		this.eventNamespace = "." + this.widgetName + this.uuid;
 		this.options = $.widget.extend( {},
 			this.options,
 			this._getCreateOptions(),
 			options );
-		this.uuid = uuid++;
 
 		this.bindings = $();
 		this.hoverable = $();
@@ -249,7 +250,7 @@ $.Widget.prototype = {
 		// we can probably remove the unbind calls in 2.0
 		// all event bindings should go through this._on()
 		this.element
-			.unbind( "." + this.widgetName + this.uuid )
+			.unbind( this.eventNamespace )
 			// 1.9 BC for #7810
 			// TODO remove dual storage
 			.removeData( this.widgetName )
@@ -258,14 +259,14 @@ $.Widget.prototype = {
 			// http://bugs.jquery.com/ticket/9413
 			.removeData( $.camelCase( this.widgetFullName ) );
 		this.widget()
-			.unbind( "." + this.widgetName + this.uuid )
+			.unbind( this.eventNamespace )
 			.removeAttr( "aria-disabled" )
 			.removeClass(
 				this.widgetFullName + "-disabled " +
 				"ui-state-disabled" );
 
 		// clean up events and states
-		this.bindings.unbind( "." + this.widgetName + this.uuid );
+		this.bindings.unbind( this.eventNamespace );
 		this.hoverable.removeClass( "ui-state-hover" );
 		this.focusable.removeClass( "ui-state-focus" );
 	},
@@ -376,7 +377,7 @@ $.Widget.prototype = {
 			}
 
 			var match = event.match( /^(\w+)\s*(.*)$/ ),
-				eventName = match[1] + "." + instance.widgetName + instance.uuid,
+				eventName = match[1] + instance.eventNamespace,
 				selector = match[2];
 			if ( selector ) {
 				instance.widget().delegate( selector, eventName, handlerProxy );