/*

* Copyright (c) 2003-2004 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:  Observer getting notifications about 

*                command handler requests from Phone Server.

*

*/

#ifndef RPHCLTCOMMANDHANDLERNOTIFY_H

#define RPHCLTCOMMANDHANDLERNOTIFY_H

//  INCLUDES

#include <e32base.h>

//  FORWARD DECLARATIONS

class RPhCltServer;

// CLASS DECLARATION

/**

*  Observer getting notifications about command handler requests

*  from Phone Server.

*

*  @lib PhoneClient.lib

*  @since 3.2

*/

class RPhCltCommandHandlerNotify 

:   public RSubSessionBase

    {

    public: // Constructors and destructors.

        /**

         * Constructor.

         */

        RPhCltCommandHandlerNotify();

    public: // New functions

        /**

        * Open subsession to server.

        * 

        * @param aServer Pre-opened server session.

        * @return Symbian OS error code of the success of the opening.

        */

        TInt Open( RPhCltServer& aServer );

        /**

        * Close subsession.

        */

        void Close();

        /**

        * Notifies when a Command handler request arrives.

        *

        * @param aStatus Status to be changed when command handler request

        *                has arrived.

        * @param aCommandArgs Command argument storage place. 

        *                     That is, packaged version of class 

        *                     TPhCltComHandCommandParameters.

        */

        void NotifyComHandCommand( 

            TRequestStatus& aStatus, 

            TDes8& aCommandArgs );

        /**

        * Cancel pending command handler request notification.

        */

        void CancelNotifyComHandCommand() const;

        /**

        * Respond to client's command handler request.

        *

        * @param aResultCode Result of the response 

        *        (previous function execution).

        * @return KErrNone if respond succeeded, otherwise Symbian error code.

        */

        TInt RespondClient( const TInt aResultCode );

    private:

        // Prohibit copy constructor if not deriving from CBase.

        RPhCltCommandHandlerNotify( const RPhCltCommandHandlerNotify& );

        // Prohibit assigment operator if not deriving from CBase.

        RPhCltCommandHandlerNotify& operator=( 

            const RPhCltCommandHandlerNotify& );

    };

#endif    // RPHCLTCOMMANDHANDLERNOTIFY_H

// End of File