diff -r f979ecb2b13e -r c198609911f9 clock/clockengines/inc/clockpluginobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clock/clockengines/inc/clockpluginobserver.h	Fri Apr 16 14:57:40 2010 +0300
@@ -0,0 +1,44 @@
+/*
+* 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:   The MClockPluginObserver class for observing plugin data changes'.
+*
+*/
+
+#ifndef __CLOCK_PLUGIN_OBSERVER_H__
+#define __CLOCK_PLUGIN_OBSERVER_H__
+
+// User includes
+#include "clocktimesourceinterface.h"
+
+/** 
+* @class MClockPluginObserver
+* @brief This is an observer class derived by objects which need to be notified
+*        by the ECOM implementations of type CClockTimeSourceInterface.
+* @exe clockserver
+*/
+class MClockPluginObserver
+	{
+	public:            // Pure virtual functions
+
+		/**
+		* @brief Pure virtual, needs to be implemented by the derived class.
+		*        Called when an implementation needs to notify upon a change.
+		*/
+		virtual void NotifyTimeChangeL( CClockTimeSourceInterface& aPluginImpl  ) = 0;
+
+	};
+
+#endif		// __CLOCK_PLUGIN_OBSERVER_H__
+
+// End of file