/*

* 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:  Homescreen application translator class.

*

*/

#include <QEvent>

#include <QFile>

#include <QDir>

#include <QApplication>

#include <QTranslator>

#include <QtGlobal>

#include <QSettings>

#include <hbinstance.h>

#include <hbview.h>

#include "hsapptranslator.h"

#ifdef Q_OS_SYMBIAN

#include <f32file.h>

#endif //Q_OS_SYMBIAN

/*!

    \class HsAppTranslator

    \ingroup group_hsapplication

    \brief Homescreen application main class.

    Loads a runtime from a runtime provider plugin. Manages 

    the runtime execution. 

*/

#ifdef COVERAGE_MEASUREMENT

#pragma CTC SKIP

#endif //COVERAGE_MEASUREMENT

/*!

    Stores the translator instance.

*/

HsAppTranslator *HsAppTranslator::mInstance = 0;

/*!

    Constructor.

    \a parent Parent object.

*/

HsAppTranslator::HsAppTranslator(QObject *parent)

  : QObject(parent)

{  

}

/*!

    Returns the hstranlator instance.

*/

HsAppTranslator *HsAppTranslator::instance()

{

    if (!mInstance) {

        mInstance = new HsAppTranslator();

    }

    return mInstance;

}

/*!

    Destructor.

*/

HsAppTranslator::~HsAppTranslator()

{

    removeTranslators();

}

/*!

    \copydoc QObject::eventFilter(QObject *watched, QEvent *event) 

*/

bool HsAppTranslator::eventFilter(QObject *watched, QEvent *event) 

{

    Q_UNUSED(watched);    

    if (event->type() == QEvent::LocaleChange) {

        setLanguage();

        emit languageChanged();

        return true;

    }

    return false;

}

void HsAppTranslator::setLanguage()

{

    removeTranslators();

#ifdef Q_OS_SYMBIAN    

    QString locale = QLocale::system().name();

#else

    QString locale;

    QFile file("hslocale.txt");

    QTextStream stream(&file);

    if (file.open(QIODevice::ReadWrite | QIODevice::Text)) {

        QString word;

        stream >> word;

        if (!word.isEmpty()) {

            locale = word;

        } else {

            locale = "en_US";

            file.seek(0);

            stream << locale;

            file.close();

        }

    } else {

        locale = QLocale::system().name();

    }

#endif //Q_OS_SYMBIAN 

    loadTranslators(locale);

}

void HsAppTranslator::loadTranslators(const QString &locale)

{

    QString path = QDir::currentPath() + QString("/hsresources/loc");

    QDir currentDir = QDir(path);

    QString localeLowerCase = locale.toLower();

    QString localeUpperCase = locale.toUpper();

    QString language = locale.left(2);

    QString languageUpperCase = language.toUpper();

    QStringList nameFilters;

    nameFilters << "*_" + locale + ".qm" 

                << "*_" + localeLowerCase + ".qm" 

                << "*_" + localeUpperCase + ".qm" 

                << "*_" + language + ".qm" 

                << "*_" + languageUpperCase + ".qm";

    QStringList locFiles = currentDir.entryList(nameFilters, QDir::Files | QDir::NoSymLinks);

    for (int i = 0; i < locFiles.size(); ++i) {

        QString locFile = locFiles[i];

        bool loaded = false;

        QTranslator *translator = new QTranslator();

#ifdef Q_OS_SYMBIAN    

        TRAP_IGNORE(loaded = translator->load(locFile, path));

#else

        loaded = translator->load(locFile, path); 

#endif //Q_OS_SYMBIAN    

        if (!loaded) {

            QString debugMsg = "ERROR: QTranslator::load() failed for " + locFile;

            HSDEBUG(debugMsg);

        }

        qApp->installTranslator(translator);

        mTranslatorList << translator;

    }

}

void HsAppTranslator::removeTranslators()

{

    while (!mTranslatorList.isEmpty()) { 

        QTranslator *translator = mTranslatorList.takeFirst();

        qApp->removeTranslator(translator);

        delete translator;

        translator = 0;

    }

}

#ifdef COVERAGE_MEASUREMENT

#pragma CTC ENDSKIP

#endif //COVERAGE_MEASUREMENT