// 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 __LOGNOTIFY_H__

#define __LOGNOTIFY_H__

#include <logcli.h>

#include "LogServBackupObserver.h"

#include "LogServDatabaseChangeObserver.h"

// Classes referenced

class MLogServBackupInterface;

class MLogServDatabaseChangeInterface;

/**

Uses the previous classes to provide change notifications

@internalComponent

*/

class CLogNotify : public CTimer, public MLogServBackupObserver, public MLogServDatabaseChangeObserver

	{

public:

	static CLogNotify* NewL(MLogServBackupInterface& aBackupInterface, MLogServDatabaseChangeInterface& aChangeInterface, TInt aPriority);

	~CLogNotify();

private:

	CLogNotify(MLogServBackupInterface& aBackupInterface, MLogServDatabaseChangeInterface& aChangeInterface, TInt aPriority);

	void ConstructL();

public:

	void Notify(TTimeIntervalMicroSeconds32 aDelay, const RMessage2& aMessage);

private: // FROM MLogServDatabaseChangeObserver

	void DCOHandleChangeEventsL(const CLogChangeDefinition& aChanges);

private: // FROM MLogServBackupObserver

	void BOHandleEventL(TLogServBackupEvent aEvent);

public: // FROM CActive

	void Cancel();

private: // FROM CActive

	void RunL();

	void DoCancel();

private: // Internal

	void CheckForChanges();

	void CompleteClientRequest(TInt aCompletionCode);

private:

	/**

	 * So this object knows when a backup is starting. Have to cancel the delay timer

	 * during this period.

	 */

	MLogServBackupInterface& iBackupInterface;

	/**

	 * The change interface

	 */

	MLogServDatabaseChangeInterface& iChangeInterface;

	/**

	 * Counters for change tracking

	 */

	TUint iLastCommit;

	TUint iCommit;

	/**

	 * The client-side outstanding notification request

	 */

	RMessagePtr2 iMessagePtr;

	/**

	 * Used as a flag to indicate whether the client-side message should

	 * be completed

	 */

	TBool iCompleteClientMessage;

#ifdef LOGGING_ENABLED

public:

	TName iClientThreadName;

	inline void SetClientThreadName(const TDesC& aName) { iClientThreadName = aName; }

#endif

	};

#endif