/*

 * 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 <QString>

#include "cpthemechanger.h"

#include "cpthemeutil.h"

#include "cpthemeinfo.h"

#include <hbinstance.h>

#include <restricted/hbthemeservices_r.h>

/*!

  \class CpThemeChanger

  \brief CpThemeChanger provides an interface for changing the current

  theme.

  This API is only for use with the control panel and its theme

  changing plugin.

*/

/*!

  Constructor.

*/

CpThemeChanger::CpThemeChanger(QObject* p) :

    QObject(p),

    mCurrentTheme(0)

{

    if(hbInstance->theme()) {

        connect(hbInstance->theme(),SIGNAL(changeFinished()), this, SLOT(changeFinished()));

    }

    setCurrentTheme();

}

/*!

    Returns a ThemeInfo object containing the current theme name and

    corresponding icons.

    If no repersentative icons exist, the HbIcon returned will be

    uninitialized.

*/

const CpThemeInfo* CpThemeChanger::currentTheme() const

{

    return mCurrentTheme;

}

/*!

 * Private helper function that gets the current theme from hbinstance and s

 * ets class' current theme.  

 */

void CpThemeChanger::setCurrentTheme()

{

    QString themeName = "";

    if (HbInstance::instance()) {

        HbTheme *hbTheme = HbInstance::instance()->theme();

        if(hbTheme) {

            themeName = hbTheme->name();

        }

    }

    if(mCurrentTheme && mCurrentTheme->name() == themeName) {

        return;

    } else {

        //buildThemeInfo creates new theme info.

        CpThemeInfo* tmpTheme = CpThemeUtil::buildThemeInfo(HbThemeServices::themePath(), themeName);

        //delete old value. set the new value.

        if(tmpTheme) {

            if(mCurrentTheme){

                delete mCurrentTheme;

            }

            mCurrentTheme = tmpTheme;

        }

    }

}

/*!

 Change a theme. Returns true on success, false otherwise.

 */

bool CpThemeChanger::changeTheme(const CpThemeInfo& newTheme)

{

    bool result = false;

    // Skip doing this if the request is for the current theme

    if (newTheme.name().isEmpty() || (mCurrentTheme && newTheme.name() == mCurrentTheme->name())) {

        return result;

    }

    QString themePath = newTheme.itemData();

    if(!themePath.isEmpty()) {

        HbThemeServices::setTheme(themePath);

        result = true;

    }

    return result;

}

/*!

 Destructor

 */

CpThemeChanger::~CpThemeChanger()

{

    delete mCurrentTheme;

    mCurrentTheme = 0;

}

/*!

 *  Slot to handle notification from theme server that theme change

 *  is done.  Notify the owner.

 */

void CpThemeChanger::changeFinished()

{

    setCurrentTheme();

    emit themeChangeFinished();

}

// End of file