/**

* 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:

*

*/

/**

 @file

 @internalComponent

*/

#ifndef CNTMSGHANDLER_H

#define CNTMSGHANDLER_H

#include <e32base.h>

#include "CCntDbManager.h" // For TCntFileMode

#include "CCntMsgHandlerFptr.h"

class CCntSession;

class CCntServer;

class CCntDbManager;

class CCntPackager;

class CContactViewDef;

class CEventQueue;

/**

The base class for message handler classes. CCntSession class creates

and owns message handler instances.

@internalComponent

*/

class CCntMsgHandler : public CBase

	{

public:

	virtual ~CCntMsgHandler();

	/** 

	Overriden by all derived classes. Delegates the incoming op code

	to a message handling method. 

	*/

	virtual TInt HandleMessageL(const RMessage2& aMessage) = 0;	

protected:

	CCntMsgHandler(CCntSession& aSession);

	// Helper methods.

	void CheckForManagerL();

	CCntServer& Server();

	void ReadL(const RMessage2& aMessage, TInt aParam, TDes& aDes);

	void WriteL(const RMessage2& aMessage, TInt aParam, const TDesC& aDes, TInt aOffset = 0);

	void UnRegisterDatabaseEventObserver();

	MsgHandlerFptr LookupHandlerMethodL(TInt aOpCode, const TInt* aOpCodes, const TInt aOpCodesLength);

protected:

	CCntDbManager*&	 iManager;

	CCntPackager& 	 iPackager;

	CContactViewDef*& iView;

	TInt& 			 iTimeOut;

	TUint&	     iSessionId;

	CCntSession& iSession;	

	};

#endif