// 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 __LOGVIEWOBSERVER_H__

 #define __LOGVIEWOBSERVER_H__

 // System includes

 #include <e32base.h>

 // User includes

 #include <logwrap.h>

 #include <logview.h>

 // Classes referenced

 class CLogClient;

 class CLogChangeDefinition;

 class MLogViewChangeObserverInternal;

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

 // -----> CLogViewObserver (header)

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

 NONSHARABLE_CLASS(CLogViewObserver) : public CActive

 /**

 @internalComponent

 */

 	{

 public:

 	static CLogViewObserver* NewL(CLogView& aView, CLogClient& aClient, MLogViewChangeObserverInternal& aObserver, TLogViewId aViewId, TInt aPriority);

 	~CLogViewObserver();

 private:

 	CLogViewObserver(CLogView& aView, CLogClient& aClient, MLogViewChangeObserverInternal& aObserver, TLogViewId aViewId, TInt aPriority);

 	void ConstructL();

 public:

 	void RequestChanges();

 private: // FROM CActive

 	void RunL();

 	void DoCancel();

 	TInt RunError(TInt aError);

 private:

 	void RequestChangesCancel();

 	void FetchChangesL(TInt aBufferSizeRequired);

 	void NotifyObserverL();

 private:

 	CLogClient& iClient;

 	MLogViewChangeObserverInternal& iObserver;

 	TLogViewId iViewId;

 	CLogChangeDefinition* iChanges;

 	CLogView& iView;

 	};

 #endif