/*

* Copyright (c) 2006-2007 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:  Background task for creating views.

*

*/

#include "pslnidletaskcreateviews.h"

#include "PslnUi.h"

#include "PslnConst.h"

#include "PslnModel.h"

// First step is to create tabgroup.

const TInt KPslnCreateTabs = 0;

// Second step is to create parts of the model.

const TInt KPslnFullUpdateModel = 1;

// Third  step is to create general theme view.

const TInt KPslnCreateGeneralView = 2;

// Fourth step is to create wallpaper view.

const TInt KPslnCreateWallpaperView = 3;

// Fifth (and final) step is to create screensaver view.

const TInt KPslnCreateScreensaverView = 4;

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

// C++ constructor can NOT contain any code, that might leave.

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

//

CPslnIdleTaskCreateViews::CPslnIdleTaskCreateViews( CPslnUi* aPslnUi ) :

    iPslnUi( aPslnUi ), iDone( EFalse ), iIdleStep( KPslnCreateTabs )

    {

    }

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

// Two-phased constructor.

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

//

CPslnIdleTaskCreateViews* CPslnIdleTaskCreateViews::NewL( CPslnUi* aPslnUi )

    {

    CPslnIdleTaskCreateViews* self =

        new( ELeave ) CPslnIdleTaskCreateViews( aPslnUi );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Symbian 2nd phase constructor can leave.

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

//

void CPslnIdleTaskCreateViews::ConstructL()

    {

    iIdleTask = CIdle::NewL( CActive::EPriorityIdle );

    iIdleTask->Start( TCallBack( DoHandleIdleTimeL, this ) );

    }

// Destructor

CPslnIdleTaskCreateViews::~CPslnIdleTaskCreateViews()

    {

    if ( iIdleTask )

        {

        iIdleTask->Cancel();

        }

    delete iIdleTask;

    }

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

// Informs when task is finished.

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

//

TBool CPslnIdleTaskCreateViews::IsFinished() const

    {

    return iDone;

    }

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

// Callback function when application is idle.

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

//

TInt CPslnIdleTaskCreateViews::DoHandleIdleTimeL( TAny* aAny )

    {

    static_cast< CPslnIdleTaskCreateViews* >( aAny )->HandleIdleTimeL();

    return KErrNone;

    }

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

// Handles idle time. With each step a new view is created.

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

//

void CPslnIdleTaskCreateViews::HandleIdleTimeL()

    {

    if ( !IsFinished() )

        {

        TUid viewToCreate = KPslnGeneralView; //just initialise

        switch( iIdleStep )

            {

            case KPslnCreateTabs:

                iPslnUi->ConstructTabGroupL();

                break;

            case KPslnFullUpdateModel:

                if ( iPslnUi->Model() &&

                     iPslnUi->Model()->ActiveSkinIndex() == KErrNotFound )

                    {

                    iPslnUi->Model()->PerformCompleteUpdateL();

                    }

                break;

            case KPslnCreateGeneralView:

                viewToCreate = KPslnGeneralView;

                break;

            case KPslnCreateWallpaperView:

                viewToCreate = KPslnWallpaperView;

                break;

            case KPslnCreateScreensaverView:

                viewToCreate = KPslnScreenSaverView;

                iDone = ETrue;

                break;

            default:

                User::Leave( KErrArgument );

                break;

            }

        if ( iIdleStep != KPslnCreateTabs && iIdleStep != KPslnFullUpdateModel )

            {

            iPslnUi->CreateViewL( viewToCreate );

            }

        iIdleStep++;

        if ( !iDone )

            {

            if ( iIdleTask && !iIdleTask->IsActive() )

                {

                iIdleTask->Start( TCallBack( DoHandleIdleTimeL, this ) );

                }

            }

        }

    }

// End of file