/*

* 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:  Implementation of CActiveApDbNotifier.

*

*/

// INCLUDE FILES

#include "ActiveApDb.h"

#include "ActiveApDbNotifier.h"

// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------

// CActiveApDbNotifier::CActiveApDbNotifier

// ---------------------------------------------------------

//

CActiveApDbNotifier::CActiveApDbNotifier( CActiveApDb& aDb )

: CActive( EPriorityStandard )

    {

    iActiveDb = &aDb;

    CActiveScheduler::Add( this );

    }

// ---------------------------------------------------------

// CActiveApDbNotifier::~CActiveApDbNotifier

// ---------------------------------------------------------

//

CActiveApDbNotifier::~CActiveApDbNotifier()

    {

    Cancel();

    }

// ---------------------------------------------------------

// CActiveApDbNotifier::RunL

// ---------------------------------------------------------

//

void CActiveApDbNotifier::RunL()

    {

    if ( iStatus == KErrCancel )

        {

        // Do nothing.

        }

    else

        {

        // first store status, because re-schedule will be earlier 

        // than notifying clients. Reason:

        // clients can leave but re-schedule MUST happen anyway,

        // to keep the notifier alive even if any client leaves

        TRequestStatus tempstatus( iStatus );

        if ( iStatus == RDbNotifier::EClose )

            {

            // Finish if the database is closed.

            NotifyChange();

            }

        else

            {

            // Reschedule automatically (as long as the database is open).

            NotifyChange();

            }

        // and now let clients handle their stuff...

        TRAP_IGNORE( iActiveDb->HandleDbEventL( tempstatus.Int() ) );

        }

    }

// ---------------------------------------------------------

// CActiveApDbNotifier::DoCancel

// ---------------------------------------------------------

//

void CActiveApDbNotifier::DoCancel()

    {

    Stop();

    }

// ---------------------------------------------------------

// CActiveApDbNotifier::Stop

// ---------------------------------------------------------

//

void CActiveApDbNotifier::Stop()

    {

    iActiveDb->Database()->CancelRequestNotification();

    }

// ---------------------------------------------------------

// CActiveApDbNotifier::Start

// ---------------------------------------------------------

//

void CActiveApDbNotifier::Start()

    {

    NotifyChange();

    }

// ---------------------------------------------------------

// CActiveApDbNotifier::NotifyChange

// ---------------------------------------------------------

//

void CActiveApDbNotifier::NotifyChange()

    {

    if ( !IsActive() )

        {

        iActiveDb->Database()->RequestNotification( iStatus );

        SetActive();

        }

    }

// End of File