/*

* Copyright (c) 2004-2005 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:  Publish & Subscribe property change observer implementation

*

*/

// INCLUDE FILES

#include "CCAPropertyObserver.h"

#include "MCAPropertyNotificationObserver.h"

#include <bautils.h>

#include <barsc.h>

#include <e32property.h>

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

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

// CCAPropertyObserver::CCAPropertyObserver

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CCAPropertyObserver::CCAPropertyObserver(

    MCAPropertyNotificationObserver& aObserver )

        : CActive( CActive::EPriorityLow ),

        iObserver( aObserver )

    {

    CActiveScheduler::Add( this );

    }

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

// CCAPropertyObserver::NewL

// Two-phased constructor.

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

//

CCAPropertyObserver* CCAPropertyObserver::NewL(

    MCAPropertyNotificationObserver& aObserver )

    {

    CCAPropertyObserver* self = new( ELeave ) CCAPropertyObserver( aObserver );

    return self;

    }

// Destructor

CCAPropertyObserver::~CCAPropertyObserver()

    {

    if ( IsActive() )

        {

        Cancel();

        }

    }

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

// CCAPropertyObserver::ObservePropertyChangeL

// (other items were commented in a header).

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

//

void CCAPropertyObserver::ObservePropertyChangeL( TUid aCategory, TUint aKey )

    {

    if ( IsActive() )

        {

        return;

        }

    User::LeaveIfError( iProperty.Attach( aCategory, aKey ) );

    iKey = aKey;

    iCategory = aCategory;

    iProperty.Subscribe( iStatus );

    SetActive();

    }

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

// CCAPropertyObserver::CancelObserve

// (other items were commented in a header).

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

//

void CCAPropertyObserver::CancelObserve()

    {

    if ( IsActive() )

        {

        Cancel();

        }

    }

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

// CCAPropertyObserver::RunL

// (other items were commented in a header).

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

//

void CCAPropertyObserver::RunL()

    {

    iProperty.Subscribe( iStatus );

    SetActive();

    iObserver.HandlePropertyNotificationEventL( iCategory, iKey );

    }

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

// CCAPropertyObserver::DoCancel

// (other items were commented in a header).

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

//

void CCAPropertyObserver::DoCancel()

    {

    iProperty.Cancel();

    }

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

// CCAPropertyObserver::Category

// (other items were commented in a header).

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

//

TUid CCAPropertyObserver::Category()

    {

    return iCategory;

    }

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

// CCAPropertyObserver::Key

// (other items were commented in a header).

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

//

TUint CCAPropertyObserver::Key()

    {

    return iKey;

    }

//  End of File