// 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