/*

* Copyright (c) 2002-2006 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: 

*  MVRUpdateEventProvider provides an interface for registering

*  and unregistering several MVRObserver derived observers

*

*/

#ifndef __MVRUPDATEEVENTPROVIDER_H

#define __MVRUPDATEEVENTPROVIDER_H

// INCLUDES

#include <e32def.h>

#include "MVRObserver.h"

// CLASS DECLARATION

/**

*  MVRUpdateEventProvider provides an interface for registering

*  and unregistering several MVRObserver derived observers

*

*/

class MVRUpdateEventProvider

    {

    public:

		/**

		* Registers an observer for receiving update notifications.

		* @param aObserver The observer object.

		*/    

		virtual void RegisterObserver( MVRObserver* aObserver ) = 0;

		/**

		* Unregisters a previously registered observer

		* @param aObserver The observer object.

		*/		

		virtual void UnregisterObserver( MVRObserver* aObserver ) = 0;

	};

#endif      // __MVRUPDATEEVENTPROVIDER_H

// End of File