// 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__