diff -r 000000000000 -r c53acadfccc6 harvester/common/inc/mpropertyobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/harvester/common/inc/mpropertyobserver.h	Mon Jan 18 20:34:07 2010 +0200
@@ -0,0 +1,62 @@
+/*
+* Copyright (c) 2008-2009 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:  Interface class.
+*
+*/
+
+
+#ifndef MPROPERTYWATCHER_H
+#define MPROPERTYWATCHER_H
+
+// SYSTEM INCLUDE
+#include <e32base.h>
+
+// CLASS DECLARATION 
+class MKeyObserver
+	{
+public:
+
+
+	/**
+	 * Factory method NotifyKeyAndStatusL
+	 * @param aKeyValue - observed key's value.
+	 * @param aPropertyCategory observed key's category.
+	 * @param aKey The P&S key to be watched.
+	 */
+	virtual void NotifyKeyL( 
+					const TInt aKeyValue,
+					const TUid aPropertyCategory,
+					const TUint aKey ) = 0;
+		};
+	
+// CLASS DECLARATION
+class MKeyAndStatusObserver
+	{
+public:
+
+    /**
+     * Factory method NotifyKeyAndStatusL
+     * @param aKeyValue - observed key's value.
+     * @param aStatus - reference to iStatus.
+     * @param aPropertyCategory observed key's category.
+     * @param aKey he P&S key to be watched.
+     */
+	virtual void NotifyKeyAndStatusL( 
+				const TInt aKeyValue,
+				TRequestStatus& aStatus,
+				const TUid aPropertyCategory,
+				const TUint aKey ) = 0;
+	};
+	
+#endif // MPROPERTYWATCHER_H