/*

* Copyright (c) 2007-2008 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:  Declarations for class CSPEtelConferenceStatusMonitor

*

*/

#ifndef CSPETELCONFERENCECALLSTATUSMONITOR_H

#define CSPETELCONFERENCECALLSTATUSMONITOR_H

#include <e32base.h>

#include <etelmm.h>

class MCSPConferenceStatusObserver; 

/**

* Monitors single ETel RMobileConferenceCall for conference call statuss.

*

*  This monitor is applied only for listening incoming calls, i.e.

*  line capabilites are not monitored.

*

*  @lib csplugin.dll

*  @since S60 v3.2

*/

NONSHARABLE_CLASS(CSPEtelConferenceStatusMonitor): public CActive

    {

    public: //Constructors and descructor

        /**

        * Two-phased constructing for the monitor.

        *

        * @param aObserver the observer for getting notification

        * @param aPhone the line to monitor

        */

        static CSPEtelConferenceStatusMonitor* NewL( 

                MCSPConferenceStatusObserver& aObserver,

                RMobileConferenceCall& aPhone );

        /**

        * C++ default destructor

        */

        virtual ~CSPEtelConferenceStatusMonitor( );

        /**

        * Start monitoring call statuss

        * @since S60 3.2

        */

        void StartMonitoring();

    protected: // From CActive

        /**

        * From CActive

        * RunL

        * @since S60 3.2

        */

        void RunL();

        /**

        * From CActive

        * Cancels the monitor

        * @since S60 3.2

        */

        void DoCancel();

    private:

        /**

        * C++ default constructor

        * @param aObserver the observer for status change (incoming call)

        * @param aPhone the line associated with the call

        */

        CSPEtelConferenceStatusMonitor( MCSPConferenceStatusObserver& aObserver,

                            RMobileConferenceCall& aPhone );

        /**

        * Constructs the monitor in the second phase.

        */

        void ConstructL();

    private: // data

        /**

        * Owner.

        */

        MCSPConferenceStatusObserver& iOwner;

        /**

        * Phone that is being observed for incoming call.

        */

        RMobileConferenceCall& iCall;

        /**

        * Status received.

        */ 

        RMobileConferenceCall::TMobileConferenceStatus iConferenceStatus;

        /**

        * Pointer for recovering from a situation where CCE releases call 

        * during observer-call sequence.

        */

        TBool* iDestrPtr;

    };

#endif // CSPETELCONFERENCECALLSTATUSMONITOR_H