/*

* 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: 

*

*/

// INCLUDE FILES

#include <e32debug.h>

#include <ActiveIdle2DomainPSKeys.h>

#include <e32property.h>

#include "logging.h"

#include "toolsstarteruiobserver.h"

// CONSTANTS

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

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

// Constructor

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

//

CToolsStarterIdleObserver::CToolsStarterIdleObserver(MToolsStarterIdleObserver& aObserver) :

    CActive(EPriorityStandard), // Standard priority

    iObserver(aObserver)

    {

    }

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

// Two-phased constructor

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

//

CToolsStarterIdleObserver* CToolsStarterIdleObserver::NewL(MToolsStarterIdleObserver& aObserver)

    {

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

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

// 2nd phase construction

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

//

void CToolsStarterIdleObserver::ConstructL()

    {

    CActiveScheduler::Add(this);

    // attach to the property which listens the idle state

    User::LeaveIfError( iProperty.Attach( KPSUidAiInformation, KActiveIdleState ) );

    LOG_MSG("CToolsStarterIdleObserver::ConstructL succesfully attached to property");

    }

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

// Destructor

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

//

CToolsStarterIdleObserver::~CToolsStarterIdleObserver()

    {

    Cancel();

    iProperty.Close();

    }

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

// Starts listening for events

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

//

void CToolsStarterIdleObserver::StartL()

    {

    Cancel();

    // subscribe to the property

    iProperty.Subscribe(iStatus);

    SetActive();

    }

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

// Implements cancellation of an outstanding request.

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

//

void CToolsStarterIdleObserver::DoCancel()

    {

    iProperty.Cancel();

    }

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

// Handles an active object's request completion event.

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

//

void CToolsStarterIdleObserver::RunL()

    {

    // check the status

    TInt idleStatus(KErrNotFound);

    TInt err( iStatus.Int() );

    if (err == KErrNone)

        {

        // resubscribe before processing new value to prevent missing updates

        StartL();

        err = iProperty.Get( KPSUidAiInformation, KActiveIdleState, idleStatus );

        if (err == KErrNone && idleStatus == EPSAiForeground) 

            {

            LOG_MSG("CToolsStarterIdleObserver::RunL idle foreground state detected");

            // idle state is active so notify the observer and no need to wait anymore

            iObserver.IdleStateActivated();

            Cancel();

            }

        else

            {

            LOG_MSG2("CToolsStarterIdleObserver::RunL unknown state %d", idleStatus);

            }

        }

    else if (err != KErrCancel)

        {

        // try again..

        StartL();

        } 

    }

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

// End of File