/*

* Copyright (c) 2002 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:  A timer based class used to notify objects when an automatic

*                response is expected.

*

*/

#ifndef CPHSRVUSSDREPLYTIMER_H

#define CPHSRVUSSDREPLYTIMER_H

// INCLUDES

#include <e32base.h>

// FORWARD DECLARATIONS

class MPhSrvUssdReplyTimerObserver;

// CLASS DECLARATION

/**

*  A timer based class used to notify objects when an 

*  automatic response is expected

*

*  @since 1.0

*/

class CPhSrvUssdReplyTimer : public CTimer

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        *

        * @param aObserver Observer for reply timer expiration event.

        */

        static CPhSrvUssdReplyTimer* 

            NewL( MPhSrvUssdReplyTimerObserver& aObserver );

        /**

        * Destructor.

        */

        ~CPhSrvUssdReplyTimer();

    public: // New functions

        /**

        * Query is the timer active or not.

        * 

        * @return True if timer is running/paused.

        */

        TBool IsTimerActive() const;

        /**

        * Start the timer.

        */

        void Start();

        /**

        * Pause the timer.

        */

        void Pause();

        /**

        * Continue paused timer.

        */

        void Continue();

        /**

        * Stop the timer.

        */

        void Stop();

    private: // Functions from base classes

        /**

        * From CActive

        */

        void RunL();

        /**

        * From CActive

        */

        TInt RunError( TInt aError );

    private:

        /**

        * C++ constructor.

        */

        CPhSrvUssdReplyTimer( MPhSrvUssdReplyTimerObserver& aObserver );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

    private:     // Data

        // The actual timer.

        RTimer iTimer;

        // The counter for remaining time.

        TTimeIntervalMicroSeconds32 iTimeLeft;

        // When the timer was started last time.

        TTime iLastStartTime;

        // Observer for timer events.

        MPhSrvUssdReplyTimerObserver& iObserver;

    };

#endif // CPHSRVUSSDREPLYTIMER_H

// End of File