// Copyright (c) 2007-2009 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:

// ULogger data watcher

// 

//

/**

 @file

 @internalTechnology

 @prototype

*/

#ifndef __ULOGGERWATCHER_H__

#define __ULOGGERWATCHER_H__

#include <e32base.h>

namespace Ulogger

{

/**MDataWatcherObserver class

*/

class MDataWatcherObserver

	{

	public:

		virtual void DataNotification() = 0;

	};

/**CULoggerWatcher class

*/

class CULoggerWatcher : public CActive

	{

	public:

		static CULoggerWatcher* NewL();

		static CULoggerWatcher* NewLC();

		~CULoggerWatcher();

		//from CActive

		void RunL();

		//own methods

		inline TRequestStatus& GetStatus(){return iStatus;}

		void StartWatching(MDataWatcherObserver* aObserver);

		inline void StopWatching()

		{

			Cancel();

		}

	private:

		CULoggerWatcher();

		void ConstructL();

		//from CActive

		void DoCancel();

		//data 

		MDataWatcherObserver* iObserver;

	};

}

#endif //__ULOGGERWATCHER_H__