/*

* Copyright (c) 2006 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 watcher

*

*/

// INCLUDE FILES

#include    "CCAPSPropWatcher.h"

#include    "MCAPSPropChangeObserver.h"

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

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

// CCAPSPropWatcher::CCAPSPropWatcher

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

// might leave.

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

//

CCAPSPropWatcher::CCAPSPropWatcher( MCAPSPropChangeObserver* aObserver )

        : CActive( CActive::EPriorityIdle ),

        iObserver( aObserver )

    {

    }

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

// CCAPSPropWatcher::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CCAPSPropWatcher::ConstructL( TUid aCategory, TUint aKey )

    {

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

    CActiveScheduler::Add( this );

    RunL();

    }

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

// CCAPSPropWatcher::NewL

// Two-phased constructor.

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

//

CCAPSPropWatcher* CCAPSPropWatcher::NewL( MCAPSPropChangeObserver* aObserver, TUid aCategory, TUint aKey )

    {

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

    CleanupStack::PushL( self );

    self->ConstructL( aCategory, aKey );

    CleanupStack::Pop();

    return self;

    }

// Destructor

CCAPSPropWatcher::~CCAPSPropWatcher()

    {

    Cancel();

    iProperty.Close();

    }

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

// CCAPSPropWatcher::RunL

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

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

//

void CCAPSPropWatcher::RunL()

    {

    iProperty.Subscribe( iStatus );

    SetActive();

    if ( iObserver )

        {

        iObserver->HandlePropertyChanged();

        }

    }

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

// CCAPSPropWatcher::DoCancel

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

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

//

void CCAPSPropWatcher::DoCancel()

    {

    iProperty.Cancel();

    }

//  End of File