/*

* Copyright (c) 2008 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:  Listener class for mediator commands

*

*/

#ifndef C_VTENGMDTRMESSAGELISTENER_H

#define C_VTENGMDTRMESSAGELISTENER_H

//  INCLUDES

//#include <e32cmn.h>

#include <MediatorCommandResponder.h>

#include "MVtEngEventObserver.h"

#include  "CVtEngStateManager.h"

#include  "MVtEngSessionInfo.h"

// FORWARD DECLARATIONS

class CMediatorCommandResponder;

class CVtEngUtility;

// CLASS DECLARATION

/**

*  Mediator command and event listener 

*

*  @lib videoteleng

*  @since 5.0

*/

NONSHARABLE_CLASS( CVtEngMdtrMessageListener ) : 

    public CBase, 

    private MMediatorCommandObserver,

    private MMediatorEventObserver,

    private MVtEngEventObserver

    {

public: // constructor and destructors

    /**

    * two-phase constructor

    */

    static CVtEngMdtrMessageListener* NewL( CVtEngUtility& aUtils );

    // Destructor

    ~CVtEngMdtrMessageListener();

public: // from MMediatorCommandObserver

    virtual void MediatorCommandL( TUid aDomain,

         TUid aCategory, 

         TInt aCommandId,

         TVersion aVersion, 

         const TDesC8& aData );

    virtual void CancelMediatorCommand( TUid aDomain,

         TUid aCategory, 

         TInt aCommandId );

public: // from MMediatorEventObserver

    virtual void MediatorEventL( TUid aDomain,

        TUid aCategory, 

        TInt aEventId, 

        const TDesC8& aData );       

public: // from MVtEngEventObserver

    // handles deferred CLI event dispatching

    virtual void HandleVtEventL( TInt aEvent );

private: // constructors

    CVtEngMdtrMessageListener( CVtEngUtility& aUtils );

    void ConstructL();

private: // new functions

    void HandleCLIEventL( const TDesC8& aData );

    TBool IsReadyForCLIEvent() const;

private:    

    CVtEngUtility& iUtils;

    // for mediator command reception

    CMediatorCommandResponder* iMediatorResponder;  

    CMediatorEventConsumer* iMediatorEvents;

    // supported mediator commands

    MediatorService::RCommandList iCommandList;

    };

#endif // C_VTENGMDTRMESSAGELISTENER_H

// End of File