// Forward declarations

class CEmailServerMonitorTimer;

/**

*  Generic timer's callback

*

*  Classes inherited from this one can be used as a callback for the generic

*  timer. TimerEvent() is called when the timer elapses.

*

*/

class MEmailServerMonitorTimerCallback

    {

public:

    /**

     * @param   aTriggeredTimer The timer which launched this event.

     */

    virtual void TimerEventL( CEmailServerMonitorTimer* aTriggeredTimer ) = 0;

    };

/**

*  Generic timer

*

*  Caller gives MEmailServerMonitorTimerCallback inherited pointer as a

*  parameter, and that pointer is used as a callback when the timer elapses.

*  Timer interval is given as a parameter for the Start function.

*

*/

class CEmailServerMonitorTimer : public CTimer

    {

public:

    /**

    * Symbian two-pahse constructor.

    *

    * @param aCallback Callback class

    * @param aPriority Timers priority, EPriorityStandard by default

    */

    static CEmailServerMonitorTimer* NewL(

        MEmailServerMonitorTimerCallback* aCallback,

        const TInt aPriority = CActive::EPriorityStandard );

    /**

    * Symbian two-pahse constructor.

    *

    * @param aCallback Callback class

    * @param aPriority Timers priority, EPriorityStandard by default

    */

    static CEmailServerMonitorTimer* NewLC(

        MEmailServerMonitorTimerCallback* aCallback,

        const TInt aPriority = CActive::EPriorityStandard );

    /**

    * Destructor.

    */

    ~CEmailServerMonitorTimer();

    /**

    * Starts the timer with specified interval, or with the default value.

    *

    * @param aInterval Timer interval as microseconds

    */

    void Start( TInt aInterval );

    /**

    * Stops the timer.

    */

    void Stop();

    /**

    * CActive object's RunL

    */

    void RunL();

protected:

    /**

    * Constructor.

    */

    CEmailServerMonitorTimer( MEmailServerMonitorTimerCallback* aCallback,

                              const TInt aPriority );

private:

    /**

    * 2nd phase constructor.

    */

    void ConstructL();

private:

    /* Pointer to callback class */

    MEmailServerMonitorTimerCallback* iCallback;

    };