// Copyright (c) 2002-2009 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:

//

#ifndef __LOGSERVDATABASECHANGEINTERFACE_H__

#define __LOGSERVDATABASECHANGEINTERFACE_H__

#include "LogServDatabaseChangeObserver.h"

#include "LogChangeDefinition.h"

/////////////////////////////////////////////////////////////////////////////////////////

// -----> MLogServDatabaseChangeInterface (header)

/////////////////////////////////////////////////////////////////////////////////////////

/**

@internalComponent

*/

class MLogServDatabaseChangeInterface

	{

/////////////////////////////////////////////////////////////////////////////////////////

public: // ENUMERATIONS

/////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////////////

public: // FROM MLogServDatabaseChangeInterface

/////////////////////////////////////////////////////////////////////////////////////////

	/**

	 * Submit some contextual information to the change interface so that it can

	 * intelligently notify observers about a batch of updates

	 */

	virtual void DCISubmitChangedEventContextL(TLogDatabaseChangeType aType, TLogId aEventId) = 0;

	/**

	 * Submit some global information about a change. This isn't specific to an event

	 * but may include changes such as 'a backup is starting/ending' or 'the log

	 * has been cleared' etc.

	 */

	virtual void DCISubmitGlobalChangeContextL(TUid aChangeType, TInt aContextParam1 = 0, TInt aContextParam2 = 0, TInt aContextParam3 = 0) = 0;

/////////////////////////////////////////////////////////////////////////////////////////

public: // FROM MLogServDatabaseChangeInterface

/////////////////////////////////////////////////////////////////////////////////////////

	/** 

	 * Request change notifications

	 */

	virtual void DCIRequestChangeNotificationsL(MLogServDatabaseChangeObserver& aObserver) = 0;

	/**

	 * Cancel change notification request

	 */

	virtual void DCIRequestChangeNotificationsCancel(MLogServDatabaseChangeObserver& aObserver) = 0;

	};

#endif