/*

 * Copyright (c) 2009 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: Used for observing property changes and notifying listeners.

 *

 */

// CLASS HEADER

#include "FreestyleEmailUiPropertySubscriber.h"

// CONSTRUCTION AND DESTRUCTION

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

// Private C++ constructor.  

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

//

CFreestyleEmailUiPropertySubscriber::CFreestyleEmailUiPropertySubscriber(

	MFreestyleEmailUiPropertyChangedObserver& aObserver ) 

    : CActive( EPriorityStandard ),

    iPropertyChangeObserver( aObserver )

	{

	// No implementation required.

    }

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

// Two-phase constructor.

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

//

CFreestyleEmailUiPropertySubscriber* CFreestyleEmailUiPropertySubscriber::NewLC(

    const TUid aUid, 

    const TUint32 aKey,

    MFreestyleEmailUiPropertyChangedObserver& aObserver )

	{

    CFreestyleEmailUiPropertySubscriber* self =

		new ( ELeave ) CFreestyleEmailUiPropertySubscriber( aObserver );

    CleanupStack::PushL( self );

    self->ConstructL( aUid, aKey );

    return self;

    }

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

// Two-phase constructor.

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

//

CFreestyleEmailUiPropertySubscriber* CFreestyleEmailUiPropertySubscriber::NewL(

    const TUid aUid, 

    const TUint32 aKey,

    MFreestyleEmailUiPropertyChangedObserver& aObserver )

    {

    CFreestyleEmailUiPropertySubscriber* self =

		CFreestyleEmailUiPropertySubscriber::NewLC( aUid, aKey, aObserver );

    CleanupStack::Pop( self );

    return self;

    }

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

// Second phase constructor.

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

//

void CFreestyleEmailUiPropertySubscriber::ConstructL( const TUid aUid,

													const TUint32 aKey )

    {

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

    CActiveScheduler::Add( this ); // Add to scheduler.

    // The initial subscription and processing of the current property value.

    RunL();

    }

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

// Destructor.

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

//

CFreestyleEmailUiPropertySubscriber::~CFreestyleEmailUiPropertySubscriber()

    {

    Cancel(); // Cancel any pending request.

    iProperty.Close();

    }

// PRIVATE METHODS FROM CACTIVE

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

// Handles completion.

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

//

void CFreestyleEmailUiPropertySubscriber::RunL()

    {

    // Resubscribe before processing a new value in order to prevent missing

    // updates.

    iProperty.Subscribe( iStatus );

    SetActive();

    TInt intValue( 0 );

    if ( iProperty.Get( intValue ) == KErrNone )

    	{

        iPropertyChangeObserver.PropertyChangedL( intValue );

        }

    }

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

// Cancels the pending requests.

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

//

void CFreestyleEmailUiPropertySubscriber::DoCancel()

    {

    iProperty.Cancel();

    }

// End of file.