/*

* 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:  Video session interface.

*

*/

#ifndef CVTENGSESSIONHANDLER_H

#define CVTENGSESSIONHANDLER_H

//  INCLUDES

#include <e32std.h>

#include "MVtEngSessionInfo.h"

#include "MVtCtlEventObserver.h"

#include "MVtCtlCallControl.h"

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CVtEngStateManager;

class CVtCtlFactory;

class CVtEngOperation;

class CVtEngIncomingCallMonitor;

// CLASS DECLARATION

/**

*  Abstraction for video telephony session with remote end.

*

*  @lib videoteleng

*  @since 2.6

*/

NONSHARABLE_CLASS( CVtEngSessionHandler ) : 

        public CActive, 

        public MVtEngSessionInfo,

        public MVtCtlEventObserver

    {

    public: // constructor and destructors

        static CVtEngSessionHandler* NewL( );

        virtual ~CVtEngSessionHandler();

    public: // New functions

        /**

        * Performs on operation in the handler.

        * @param operation to be performed on the handler

        */

        void HandleL( CVtEngOperation& aOperation );

    public: // from MVtEngSessionInfo

        /**

        * Gets session state.

        * @return

        */

        virtual TSessionState State( TBool aForcedRefresh ) const;

        /**

        * Gets session direction.

        * @return

        */

        virtual TInt GetDirection( TDirection& aDirection ) const;

        /**

        * Gets session duration.

        * @param 

        * @param

        */

        virtual TInt GetDuration( 

            TDuration& aDuration,

            TBool& aEnabled ) const;

        /*

        * @see MVtEngSessionInfo::aCLI

        */

        virtual TInt GetCLI( TCLI& aCLI ) const;

    public: // From MVtCtlEventObserver

        virtual void HandleVtSessionEventL( 

            TVtCtlEvent aEvent,

            TAny* aParams );

    public: // new functions

        /**

        * Initializes session handler.

        */

        void InitializeL();

        /**

        * Frees resources used by session handler.

        */

        void Uninitialize();

        MVtCtlCallControl::TVtCtlState RealState() const;

        /**

        * Starts Incoming call PS key monitoring

        */

        void StartIncomingCallMonitorL();

    private: // constructors

        void ConstructL();

        CVtEngSessionHandler( );

    private: // from CActive

        void RunL();

        void DoCancel();

    private: // Member data

        MVtCtlCallControl* iSessionControl;

        CVtCtlFactory*     iFactory;

        RLibrary iLib;

        CVtEngIncomingCallMonitor* iIncomingCallMonitor; 

    };

#endif      // CVTENGSESSIONHANDLER_H

// End of File