/*

* 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 "tsbackstepping.h"

#include <w32std.h>// key event

#include <apgwgnam.h>// for CApaWindowGroupName

#include <apgtask.h>

#include <coedef.h>

#include <e32property.h>

#include <e32debug.h>

#include <homescreendomainpskeys.h>

#include <afactivitylauncher.h>

#include "tsbacksteppingfilter.h"

_LIT(KHsActivactionUri, "appto://20022F35?activityname=HsIdleView&activityinbackground=true");

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

/** 

 */

CTsBackstepping* CTsBackstepping::NewL( MTsWindowGroupsMonitor& aMonitor )

    {

    CTsBackstepping* self = CTsBackstepping::NewLC( aMonitor );

    CleanupStack::Pop( self );

    return self;

    }

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

/** 

 */

CTsBackstepping* CTsBackstepping::NewLC( MTsWindowGroupsMonitor& aMonitor )

    { 

    CTsBackstepping* self = new (ELeave) CTsBackstepping( aMonitor );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

/** 

 */

CTsBackstepping::CTsBackstepping( MTsWindowGroupsMonitor &aMonitor )

:

    {

    }

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

/** 

 *  CTsBackstepping::~CTsBackstepping

 *  deconstructor

 */

CTsBackstepping::~CTsBackstepping()

    {

    delete iFilter;

    }

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

/** 

 */

void CTsBackstepping::ConstructL ()

    {

    BaseConstructL();

    iFilter = CTsBacksteppingFilter::NewL();

    }

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

 */

void CTsBackstepping::HandleWindowGroupChanged( 

    {

    RDebug::Print(_L("[Backstepping] started"));

    RDebug::Print(_L("[Backstepping] finished"));

    }

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

/** 

 * Analyzes window stack and move homescreen to proper position

 */

void CTsBackstepping::HandleWindowGroupChangedL( 

    {

    // calculate the desired position of Homescreen

    TInt optimalOffset(1);

    TInt targetHsOffset(currentHsOffset);

    for( TInt offset(0); offset < currentHsOffset; ++offset ) 

        {

            {

                {

                } 

                {

                if(offset + 1 < currentHsOffset && 

                    {

                    ++optimalOffset;

                    }

                targetHsOffset = optimalOffset;

                }

            break;

            } 

        else

            {

            ++optimalOffset;

            }

        }

    // change windows order if necessary

    if(targetHsOffset != currentHsOffset)

        {

        RDebug::Print(_L("[Backstepping] about to change window groups order"));

        }

    }

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

/** 

 */

TInt CTsBackstepping::HomescreenOffsetL( 

    {

    TInt offset( KErrNotFound );

        {

            {

            offset = iter;

            }

        }

    User::LeaveIfError( offset );

    return offset;

    }

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

 */

    {

        {

            {

            }

        }

    }

// end of file