1 files changed, 30 insertions, 25 deletions
diff --git a/ui/jquery.ui.widget.js b/ui/jquery.ui.widget.js
index 06f25576a..239492992 100644
--- a/ui/jquery.ui.widget.js
+++ b/ui/jquery.ui.widget.js
@@ -25,6 +25,9 @@ $.cleanData = function( elems ) {
 
 $.widget = function( name, base, prototype ) {
 	var fullName, existingConstructor, constructor, basePrototype,
+		// proxiedPrototype allows the provided prototype to remain unmodified
+		// so that it can be used as a mixin for multiple widgets (#8876)
+		proxiedPrototype = {},
 		namespace = name.split( "." )[ 0 ];
 
 	name = name.split( "." )[ 1 ];
@@ -71,38 +74,40 @@ $.widget = function( name, base, prototype ) {
 	// inheriting from
 	basePrototype.options = $.widget.extend( {}, basePrototype.options );
 	$.each( prototype, function( prop, value ) {
-		if ( $.isFunction( value ) ) {
-			prototype[ prop ] = (function() {
-				var _super = function() {
-						return base.prototype[ prop ].apply( this, arguments );
-					},
-					_superApply = function( args ) {
-						return base.prototype[ prop ].apply( this, args );
-					};
-				return function() {
-					var __super = this._super,
-						__superApply = this._superApply,
-						returnValue;
-
-					this._super = _super;
-					this._superApply = _superApply;
-
-					returnValue = value.apply( this, arguments );
-
-					this._super = __super;
-					this._superApply = __superApply;
-
-					return returnValue;
-				};
-			})();
+		if ( !$.isFunction( value ) ) {
+			proxiedPrototype[ prop ] = value;
+			return;
 		}
+		proxiedPrototype[ prop ] = (function() {
+			var _super = function() {
+					return base.prototype[ prop ].apply( this, arguments );
+				},
+				_superApply = function( args ) {
+					return base.prototype[ prop ].apply( this, args );
+				};
+			return function() {
+				var __super = this._super,
+					__superApply = this._superApply,
+					returnValue;
+
+				this._super = _super;
+				this._superApply = _superApply;
+
+				returnValue = value.apply( this, arguments );
+
+				this._super = __super;
+				this._superApply = __superApply;
+
+				return returnValue;
+			};
+		})();
 	});
 	constructor.prototype = $.widget.extend( basePrototype, {
 		// TODO: remove support for widgetEventPrefix
 		// always use the name + a colon as the prefix, e.g., draggable:start
 		// don't prefix for widgets that aren't DOM-based
 		widgetEventPrefix: existingConstructor ? basePrototype.widgetEventPrefix : name
-	}, prototype, {
+	}, proxiedPrototype, {
 		constructor: constructor,
 		namespace: namespace,
 		widgetName: name,