Widget: Added _super() and _superApply() methods. Fixes #6861 - Widge…

…t: Add _super() and _superApply() for easy access to parent methods.

tests/unit/widget/widget_core.js

@@ -228,6 +228,59 @@ test( "re-init", function() {
 	same( actions, [ "optionfoo", "init" ], "correct methods called on re-init with options" );
 });
 
+test( "._super()", function() {
+	expect( 6 );
+	var instance;
+	$.widget( "ui.testWidget", {
+		method: function( a, b ) {
+			same( this, instance, "this is correct in super widget" );
+			same( a, 5, "parameter passed to super widget" );
+			same( b, 10, "second parameter passed to super widget" );
+			return a + b;
+		}
+	});
+
+	$.widget( "ui.testWidget2", $.ui.testWidget, {
+		method: function( a ) {
+			same( this, instance, "this is correct in widget" );
+			same( a, 5, "parameter passed to widget" );
+			var ret = this._super( "method", a, a*2 );
+			same( ret, 15, "super returned value" );
+		}
+	});
+
+	instance = $( "<div>" ).testWidget2().data( "testWidget2" );
+	instance.method( 5 );
+	delete $.ui.testWidget2;
+});
+
+test( "._superApply()", function() {
+	expect( 7 );
+	var instance;
+	$.widget( "ui.testWidget", {
+		method: function( a, b ) {
+			same( this, instance, "this is correct in super widget" );
+			same( a, 5, "parameter passed to super widget" );
+			same( b, 10, "second parameter passed to super widget" );
+			return a + b;
+		}
+	});
+
+	$.widget( "ui.testWidget2", $.ui.testWidget, {
+		method: function( a, b ) {
+			same( this, instance, "this is correct in widget" );
+			same( a, 5, "parameter passed to widget" );
+			same( b, 10, "second parameter passed to widget" );
+			var ret = this._superApply( "method", arguments );
+			same( ret, 15, "super returned value" );
+		}
+	});
+
+	instance = $( "<div>" ).testWidget2().data( "testWidget2" );
+	instance.method( 5, 10 );
+	delete $.ui.testWidget2;
+});
+
 test( ".option() - getter", function() {
 	$.widget( "ui.testWidget", {
 		_create: function() {}

ui/jquery.ui.widget.js

@@ -9,6 +9,8 @@
  */
 (function( $, undefined ) {
 
+var slice = Array.prototype.slice;
+
 var _cleanData = $.cleanData;
 $.cleanData = function( elems ) {
 	for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
@@ -50,7 +52,8 @@ $.widget = function( name, base, prototype ) {
 		namespace: namespace,
 		widgetName: name,
 		widgetEventPrefix: name,
-		widgetBaseClass: fullName
+		widgetBaseClass: fullName,
+		base: base.prototype
 	}, prototype );
 
 	$.widget.bridge( name, $[ namespace ][ name ] );
@@ -59,7 +62,7 @@ $.widget = function( name, base, prototype ) {
 $.widget.bridge = function( name, object ) {
 	$.fn[ name ] = function( options ) {
 		var isMethodCall = typeof options === "string",
-			args = Array.prototype.slice.call( arguments, 1 ),
+			args = slice.call( arguments, 1 ),
 			returnValue = this;
 
 		// allow multiple hashes to be passed on init
@@ -141,6 +144,13 @@ $.Widget.prototype = {
 	_create: function() {},
 	_init: function() {},
 
+	_super: function( method ) {
+		return this.base[ method ].apply( this, slice.call( arguments, 1 ) );
+	},
+	_superApply: function( method, args ) {
+		return this.base[ method ].apply( this, args );
+	},
+
 	destroy: function() {
 		this.element
 			.unbind( "." + this.widgetName )