/*

* 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:  ws monitor implementation

 *

*/

#include "tsfswmonitor.h"

#include "tsfswobservers.h"

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

// CTsFswMonitor::~CTsFswMonitor

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

//

CTsFswMonitor::~CTsFswMonitor()

    {

    Cancel();

    iWg.Close();

    iWsSession.Close();

    }

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

// CTsFswMonitor::CTsFswMonitor

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

//

CTsFswMonitor::CTsFswMonitor(MTsFswTaskListObserver& aTaskListObserver) : CActive( EPriorityStandard ),

    iTaskListObserver(&aTaskListObserver)

    {

    }

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

// CTsFswMonitor::NewL

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

//        

CTsFswMonitor* CTsFswMonitor::NewL(MTsFswTaskListObserver& aTaskListObserver)

    {

    CTsFswMonitor* self = NewLC(aTaskListObserver);

    CleanupStack::Pop( self );

    return self;

    }

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

// CTsFswMonitor::NewLC

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

//

CTsFswMonitor* CTsFswMonitor::NewLC(MTsFswTaskListObserver& aTaskListObserver)

    {

    CTsFswMonitor* self = new ( ELeave ) CTsFswMonitor(aTaskListObserver);

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CTsFswMonitor::ConstructL

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

//

void CTsFswMonitor::ConstructL()

    {

    CActiveScheduler::Add( this );

    //Create window server observer

    ConstractObserverL();

    Subscribe();

    }

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

// Subscribe

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

//

void CTsFswMonitor::Subscribe()

    {

    if( !IsActive() )

        {

        iWsSession.EventReady( &iStatus );

        SetActive();

        }

    }

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

// ConstractObserverL

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

//

void CTsFswMonitor::ConstractObserverL()

{

    User::LeaveIfError( iWsSession.Connect() );

    iWg = RWindowGroup( iWsSession );

    User::LeaveIfError( iWg.Construct( 

                        reinterpret_cast<TUint32>( &iWg ) ) );

    iWg.DisableFocusChangeEvents();

    iWg.DisableModifierChangedEvents();

    iWg.DisableOnEvents();

    iWg.DisableScreenChangeEvents();

    //enable notifications about group lists

    User::LeaveIfError( iWg.EnableGroupListChangeEvents() );

}

void CTsFswMonitor::RunL()

{

    User::LeaveIfError( iStatus.Int() );

    TWsEvent event;

    iWsSession.GetEvent( event );

    Subscribe();//new subscribtion has to be called after picking event

    if( EEventWindowGroupListChanged == event.Type() /*|| EEventFocusGroupChanged == event.Type()*/ )

        {

        if ( iTaskListObserver )

            {

            iTaskListObserver->UpdateTaskList(); 

            }

        }

}

TInt CTsFswMonitor::RunError( TInt /*aError*/ )

{

    Subscribe();

    return KErrNone;

}

void CTsFswMonitor::DoCancel()

{

    if( IsActive() )

        {

        iWsSession.EventReadyCancel();

        }

}

// end of file