--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phoneapp/phoneuiutils/inc/mphonepubsubobserver.h	Mon Jan 18 20:18:27 2010 +0200
@@ -0,0 +1,47 @@
+/*
+* Copyright (c) 2005 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:  Abstract class to observe property value changes
+*
+*/
+
+
+#ifndef __MPHONEPUBSUBOBSERVER_H
+#define __MPHONEPUBSUBOBSERVER_H
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+
+/**
+*  Abstract class to observe the property value changes
+*/
+class MPhonePubSubObserver
+    {
+    public: 
+        
+        /**
+        * This function is called when there is property value change.
+        * @param aCategory Category of the property
+        * @param aKey Property key that is changed
+        * @param aValue New property value
+        */
+        virtual void HandlePropertyChangedL( 
+            const TUid& aCategory,
+            const TUint aKey,
+            const TInt aValue ) = 0;
+    };
+
+#endif      // __MPhonePubSubObserver_H
+            
+// End of File