/*

* Copyright (c) 2008 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 CHSPSBRObserver class

*

*/

#include <sbdefs.h>

#include "hspsbrobserver.h"

#include "hspsthemeserver.h"

// ======== LOCAL FUNCTIONS ====================================================

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

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

// CHSPSBRObserver::CHSPSBRObserver

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

// might leave.

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

//

CHSPSBRObserver::CHSPSBRObserver( ChspsThemeServer& aServer ):

    CActive(CActive::EPriorityStandard),

    iServer( aServer )

    {

    CActiveScheduler::Add( this );

    }

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

// CHSPSBRObserver::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CHSPSBRObserver::ConstructL()

    {

    User::LeaveIfError( iProperty.Attach( 

        KUidSystemCategory, 

        conn::KUidBackupRestoreKey ) );

    }

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

// CHSPSBRObserver::NewL

// Two-phased constructor.

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

//

CHSPSBRObserver* CHSPSBRObserver::NewL( ChspsThemeServer& aServer )

    {

    CHSPSBRObserver* self = new( ELeave ) CHSPSBRObserver( aServer );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

// Destructor

CHSPSBRObserver::~CHSPSBRObserver()

    {

    Cancel();

    iProperty.Close();

    }

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

// CHSPSBRObserver::Start

// Start the system agent to listen to the event

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

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

//

void CHSPSBRObserver::Start()

    {

    Cancel();

    iProperty.Subscribe( iStatus );

    SetActive();

    }

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

// CHSPSBRObserver::RunError

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

//  

TInt CHSPSBRObserver::RunError(TInt aError)

    {

    if( aError != KErrCancel )

        {

        Start();           

        }

    else 

        {

        Cancel();

        iProperty.Close();    

        }

    return KErrNone;

    };

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

// CHSPSBRObserver::RunL

// from CActive

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

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

//

void CHSPSBRObserver::RunL()

    {

    // Resubscribe before processing new value to prevent missing updates

    TInt backupStatus = 0;

    TInt err( iStatus.Int() );

    if ( err == KErrNone )

        {

        Start();

        User::LeaveIfError( iProperty.Get( 

                KUidSystemCategory, 

                conn::KUidBackupRestoreKey, backupStatus ) );

        // Forward backup status to listening server

        iServer.HandleBREventL( backupStatus );

        }

    else if ( err != KErrCancel ) // Ignore all errors except cancel

        {

        Start();

        }

    else // When cancel occurs, stop everything

        {

        User::Leave( KErrCancel );    

        }

    }

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

// CHSPSBRObserver::DoCancel

// From CActive

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

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

//

void CHSPSBRObserver::DoCancel()

    {

    iProperty.Cancel();

    }

// End of file