/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbServers module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbinputserversettings_p.h"

#include <QFile>

#include <QDir>

#include <hbinputsettingproxy.h>

#include <hbinputsettingproxy_p.h>

HbInputServerSettings::HbInputServerSettings(HbInputServer *server)

    : mServer(server),

      mSettings(0)

{

}

HbInputServerSettings::~HbInputServerSettings()

{

    if (mSettings) {

        mSettings->lock();

        saveToDisk();

        mSettings->unlock();

        delete mSettings;

    }

}

/*

Initializes input settings shared memory. If the shared memory already exists,

attaches to it and refreshes the settings from disk.

Returns true on success.

*/

bool HbInputServerSettings::initialize()

{

    mServer->debugPrint("Initializing settings");

    mSettings = new QSharedMemory(HbInputSettingsSharedMemoryKey);

    if (!mSettings->create(sizeof(HbSettingProxyInternalData))) {

        mServer->debugPrint("Settings shared memory already exists!");

        mSettings->attach();

    }

    mSettings->lock();

    if (!initializeFromDisk()) {

        initializeWithDefaults();

    }

    mSettings->unlock();

    mServer->debugPrint("Settings initialized");

    return true;

}

/*

Reads input settings from disk. Returns true if successful,

false if the file cannot be read.

*/

bool HbInputServerSettings::initializeFromDisk()

{

    mServer->debugPrint("Reading input settings from disk");

    if (HbInputSettingProxyPrivate::load(settingsData())) {

        mServer->debugPrint("Input settings successfully read from disk");

        return true;

    } else {

        mServer->debugPrint("Input settings could not be read from disk");

        return false;

    }

}

/*

Saves input settings to disk.

*/

void HbInputServerSettings::saveToDisk()

{

    mServer->debugPrint("Saving input settings to disk");

    HbInputSettingProxyPrivate::save(settingsData());

    mServer->debugPrint("Input settings saved");

}

/*

Fills shared data with default settings values.

*/

void HbInputServerSettings::initializeWithDefaults()

{

    HbSettingProxyInternalData *data = settingsData();

    if (data) {

        HbInputSettingProxyPrivate::writeDefaultValuesToData(data);

        mServer->debugPrint("Input settings initialized with defaults");

    }

}

/*

Returns pointer to the settings data inside shared memory.

*/

HbSettingProxyInternalData *HbInputServerSettings::settingsData() const

{

    return static_cast<HbSettingProxyInternalData *>(mSettings->data());

}