/*

* Copyright (c) 2010 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 <QStateMachine>

#include <QScopedPointer>

#include <HbMainWindow>

#include <HbView>

#include <HbAction>

#include "hsdatabase.h"

#include "hsscene.h"

#include "hsbackuprestoreobserver.h"

#include "hsbackuprestorestate.h"

#include "hsscene.h"

#include "hsgui.h"

/*!

    \class HsBackupRestoreState

    \ingroup group_hshomescreenstateplugin

    \brief Home screen Bacup/Restore state.

    Releases all Home screen data, which will be backed up or restored.

*/

/*!

    Constructs a new backup/restore state with the given \a parent.

*/

HsBackupRestoreState::HsBackupRestoreState(QState *parent)

    : QState(parent)      

{	

    connect(this, SIGNAL(entered()), SLOT(action_startListenBURStatus()));

    connect(this, SIGNAL(exited()), SLOT(action_stopListenBURStatus()));

}

/*!

    Destroys this backup/restore state.

*/

HsBackupRestoreState::~HsBackupRestoreState()

{

}

/*!

    Starts listen backup/restore status and releases Home screen data.

*/

void HsBackupRestoreState::action_startListenBURStatus()

{

    HsBackupRestoreObserver *backupRestoreObserver = 

        HsBackupRestoreObserver::instance();

    connect(backupRestoreObserver, 

            SIGNAL(event_loadScene()));

    // Close database

    mDatabase.reset(HsDatabase::takeInstance());

    mDatabase->close();        

    deleteIdleView();        

    // Delete scene

    backupRestoreObserver->readyForBUR();

}

/*!

    Stops listen backup/restore status.

*/

void HsBackupRestoreState::action_stopListenBURStatus()

{

    HsBackupRestoreObserver::instance()->disconnect(this);    

    // Open database

    HsDatabase::setInstance(mDatabase.data());

    mDatabase.take();

    HsDatabase::instance()->open();

}

/*!

   Deletes idle view

*/

void HsBackupRestoreState::deleteIdleView()

{

    // Delete idle view

    QScopedPointer<HbView> idleView(HsGui::takeIdleView());

    if (idleView){

        idleView->setNavigationAction(0);

        HsScene::mainWindow()->removeView(idleView.data());

    }

}