diff -r 000000000000 -r f72a12da539e widgetmanager/inc/wmwidgetdataobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widgetmanager/inc/wmwidgetdataobserver.h	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,48 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies)..
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+* Observer for changes in the widget data
+*
+*/
+
+
+#ifndef WMWIDGETDATAOBSERVER_H
+#define WMWIDGETDATAOBSERVER_H
+
+// INCLUDES
+#include <e32std.h>
+
+// Forward declarations
+class CWmWidgetData;
+
+// CLASS DECLARATION
+
+/**
+ * Observer class for receiving notifications
+ * when changes occur in widget data
+ */
+NONSHARABLE_CLASS( MWmWidgetDataObserver )
+    {
+    public:
+        /**
+         * A single widget data has changed.
+         * @param aWidgetData pointer to the data where change
+         *        has occurred
+         */
+        virtual void HandleWidgetDataChanged(
+                            CWmWidgetData* aWidgetData ) = 0;
+
+    };
+
+#endif // WMWIDGETDATAOBSERVER_H