/*

* Copyright (c) 2002 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:  MNssVASDBEventNotifier is the interface class for clients to add 

*				 or remove observers to the VAS database. 

*

*/

#ifndef NSSMVASDBEVENTNOTIFIER_H

#define NSSMVASDBEVENTNOTIFIER_H

//  INCLUDES

#include <nssvascoreconstant.h>

#include <nssvasmvasdatabaseobserver.h>

// CLASS DECLARATION

/**

*  MNssVASDBEventNotifier is the interface class for clients to add/remove observers.

*  @lib NssVASApi.lib

*  @since 2.8

*/

class MNssVASDBEventNotifier 

    {

    public:  

      /**

      * Adds an observer to VAS DB

      * @since 2.0

      * @param call back address

      * @return none

      */

	  virtual void AddObserverL(MNssVASDatabaseObserver* aObserver) = 0;

	  /**

      * Removes an observer from VAS DB

      * @param call back address

      * @leave KErrNotFound if given observer has never been added

      */

	  virtual void RemoveObserverL(MNssVASDatabaseObserver* aObserver) = 0;

    };

#endif      // MVASDBEVENTNOTIFIER_H

// End of File