diff -r 000000000000 -r f72a12da539e idlehomescreen/xmluicontroller/inc/mpscallback.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/xmluicontroller/inc/mpscallback.h	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,49 @@
+/*
+* Copyright (c) 2005-2008 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:  Callback for Publish & Subscribe observation
+*
+*/
+
+
+#ifndef M_PSCALLBACK_H
+#define M_PSCALLBACK_H
+
+#include <e32base.h>
+
+namespace AiXmlUiController
+{
+	
+class MPSCallback
+	{
+	public:
+	
+		/**
+		 * Callback method for P&S observer.
+		 * Called when appropriate value has been updated.
+		 * @param aKey Key that has been observed.
+		 * @param aValue New Value
+		 */
+		virtual void ValueUpdatedL( TInt aKey, TInt aValue ) = 0;	
+   
+    protected:
+
+        /**
+         * Protected destructor prevents deletion through this interface.
+         */
+        MPSCallback() {};	
+	};
+	
+} // namespace AiXmlUiController
+
+#endif // M_PSCALLBACK_H