/*

* Copyright (c) 2006-2007 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:  Provides call duration timer for PS calls

*

*/

#ifndef CCCEDURATIONTIMER_H

#define CCCEDURATIONTIMER_H

//  INCLUDES

#include <e32base.h>

// FORWARD DECLARATIONS

class MCCECallObserver;

class MCCEConferenceCallObserver;

// CLASS DECLARATION

/**

*  CCCEDurationTimer call duration class.

*  Used for count call duration

*

*  @lib cce.lib

*  @since Series 60 3.2

*/

NONSHARABLE_CLASS(CCCEDurationTimer) : public CBase, public MBeating

    {

public:

    /**

    * Two-phased constructor.

    */

    static CCCEDurationTimer* NewL();

    /**

    * Destructor

    */

    virtual ~CCCEDurationTimer(); 

public:

    /**

     * Set observer

     *

     * @since S60 v3.2

     */

    void SetObserver( MCCECallObserver* aObserver );

    /**

     * Set conference call observer

     *

     * @since S60 v3.2

     */

    void SetConferenceObserver( MCCEConferenceCallObserver* aObserver );

    /**

     * Start timer.

     *

     * @since S60 v3.2

     */

    void Start();

    /**

     * Start timer

     *

     * @since S60 v3.2

     */

    void Start(TInt aBeatsOffset);

    /**

     * Restart air duration timer from the given value

     *

     * @since S60 v3.2

     * @param aBeatsOffset innitial timer value

     */

    void RestartAirTimeDuration(TInt aBeatsOffset);

    /**

     * Start timer

     *

     * @since S60 v3.2

     */

    void StartAirTimeDuration();

    /**

     * Call start time

     *

     * @since S60 v3.2

     */

    TDateTime StartTime();  

    /**

     * Stop timer

     *

     * @since S60 v3.2

     * @return True if heart beat runner was started

     */

    TBool Stop();

    /**

     * Returns number of beats from the previous Start of the timer.

     * @since S60 v3.2

     */

    TInt NumberOfBeats() const;

    /**

     * Set the number of beats to zero

     * @since S60 v3.2

     */

    void Reset();

// from base class MBeating

    /**

     * Called when we need to synchronize

     *

     * @since S60 v3.2

     */

    void Synchronize();

protected:

    /**

     * Default constructor

     */

    CCCEDurationTimer();

    /**

     * 2nd phase of the construction

     */

    void ConstructL();

// from base class MBeating

    /**

     * Called when beat works ok, once every second.

     *

     * @since S60 v3.2

     */

    void Beat();        

private: // data

    /**

     * Pointer to PS Data object. 

     * If this is NULL, timer is used to AirTime duration.

     */

    MCCECallObserver* iObserver;

    /**

     * Conference call duration observer.

     */

    MCCEConferenceCallObserver* iConferenceCallObserver;

    /**

     * Timer

     * Own

     */

    CHeartbeat*     iHeartbeat; 

    /**

     * True if timer is running

     */

    TBool           iActive; 

    /**

     * Current timer value

     */

    TInt            iNumberOfBeats;

    /**

     * Timer start time

     */

    TTime           iStartTime;

    /**

     * Is this timer instance used to airtimeduration

     */

    TBool           iAirTimeDuration;

    };

#endif      // CCCEDURATIONTIMER_H

// End of File