/*
* Copyright (c) 2006 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: Videoteleng extension base class
*
*/
#ifndef CVTENGEXTENSIONSBASE_H
#define CVTENGEXTENSIONSBASE_H
// INCLUDES
#include <e32base.h>
#include "vtengcommands.h"
// FORWARD DECLARATIONS
class CVtEngOperation;
// CLASS DECLARATION
/**
* Videoteleng extension base class.
*
* @lib videoteleng.lib
* @since S60 v3.2
*/
NONSHARABLE_CLASS ( CVtEngExtensionBase ): public CBase
{
public: // pure virtuals.
/**
* Returns extension API interface
* @return API IF as TAny pointer
*/
virtual TAny* GetInterface() = 0;
/**
* Handles requested extension operation
* @param aOp requested operation pointer
* @return TBool if operation succeed or not
*/
virtual TBool HandleL( CVtEngOperation* aOp ) = 0;
/**
* Validates requested extension command
* @param aCommandId requested command identifier (TInt)
* @return TBool if command is valid or not
*/
virtual TBool ValidateCommand( const TVtEngCommandId aCommandId ) = 0;
/**
* Gets extension UID
* @return extension UID
*/
const TUid& Uid() const;
protected:// Constructor.
/*
* C++ default constructor.
*/
CVtEngExtensionBase( TUid aExtensionUid );
private:
// Extension UID
const TUid iExtensionUid;
};
#endif //CVTENGEXTENSIONSBASE_H