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#include <QtTest/QtTest>

#include <qapplication.h>

#include <QtCore/QSet>

#include <QtCore/QTranslator>

#include <private/qthread_p.h>

#include <QtGui/QInputDialog>

#include <QtGui/QColorDialog>

#include <QtGui/QFileDialog>

#include <QtGui/QDesktopWidget>

//TESTED_CLASS=

//TESTED_FILES=

class tst_languageChange : public QObject

{

    Q_OBJECT

public:

    tst_languageChange();

public slots:

    void initTestCase();

    void cleanupTestCase();

private slots:

    void retranslatability_data();

    void retranslatability();

};

tst_languageChange::tst_languageChange()

{

}

void tst_languageChange::initTestCase()

{

}

void tst_languageChange::cleanupTestCase()

{

}

/**

 * Records all calls to translate()

 */

class TransformTranslator : public QTranslator

{

    Q_OBJECT

public:

    TransformTranslator() : QTranslator() {}

    TransformTranslator(QObject *parent) : QTranslator(parent) {}

    virtual QString translate(const char *context, const char *sourceText, const char *comment = 0) const

    {

        QByteArray total(context);

        total.append("::");

        total.append(sourceText);

        if (comment) {

            total.append("::");

            total.append(comment);

        }

        m_translations.insert(total);

        QString res;

        for (int i = 0; i < int(qstrlen(sourceText)); ++i) {

            QChar ch = QLatin1Char(sourceText[i]);

            if (ch.isLower()) {

                res.append(ch.toUpper());

            } else if (ch.isUpper()) {

                res.append(ch.toLower());

            } else {

                res.append(ch);

            }

        }

        return res;

    }

    virtual bool isEmpty() const { return false; }

public slots:

    void install() {

        QCoreApplication::installTranslator(this);

        QTest::qWait(2500);

        QApplication::closeAllWindows();

    }

public:

    mutable QSet<QByteArray> m_translations;

};

enum DialogType {

    InputDialog = 1,

    ColorDialog,

    FileDialog

};

typedef QSet<QByteArray> TranslationSet;

Q_DECLARE_METATYPE(TranslationSet)

void tst_languageChange::retranslatability_data()

{

    QTest::addColumn<int>("dialogType");

    QTest::addColumn<TranslationSet >("expected");

    //next we fill it with data

    QTest::newRow( "QInputDialog" )

        << int(InputDialog) << (QSet<QByteArray>()

                    << "QDialogButtonBox::Cancel");

    QTest::newRow( "QColorDialog" )

        << int(ColorDialog) << (QSet<QByteArray>()

                    << "QDialogButtonBox::Cancel"

                    << "QColorDialog::&Sat:"

                    << "QColorDialog::&Add to Custom Colors"

                    << "QColorDialog::&Green:"

                    << "QColorDialog::&Red:"

                    << "QColorDialog::Bl&ue:"

                    << "QColorDialog::A&lpha channel:"

                    << "QColorDialog::&Basic colors"

                    << "QColorDialog::&Custom colors"

                    << "QColorDialog::&Val:"

                    << "QColorDialog::Hu&e:");

    QTest::newRow( "QFileDialog" )

        << int(FileDialog) << (QSet<QByteArray>()

                    << "QFileDialog::All Files (*)"

                    << "QFileDialog::Back"

                    << "QFileDialog::Create New Folder"

                    << "QFileDialog::Detail View"

#ifndef Q_OS_MAC

                    << "QFileDialog::File"

#endif

                    << "QFileDialog::Files of type:"

                    << "QFileDialog::Forward"

                    << "QFileDialog::List View"

                    << "QFileDialog::Look in:"

                    << "QFileDialog::Open"

                    << "QFileDialog::Parent Directory"

                    << "QFileDialog::Show "

                    << "QFileDialog::Show &hidden files"

                    << "QFileDialog::&Delete"

                    << "QFileDialog::&New Folder"

                    << "QFileDialog::&Rename"

                    << "QFileSystemModel::Date Modified"

#ifdef Q_OS_WIN

                    << "QFileSystemModel::My Computer"

#else

                    << "QFileSystemModel::Computer"

#endif

                    << "QFileSystemModel::Size"

#ifdef Q_OS_MAC

                    << "QFileSystemModel::Kind::Match OS X Finder"

#else

                    << "QFileSystemModel::Type::All other platforms"

#endif

//                    << "QFileSystemModel::%1 KB"

                    << "QDialogButtonBox::Cancel"

                    << "QDialogButtonBox::Open"

                    << "QFileDialog::File &name:");

}

void tst_languageChange::retranslatability()

{

    QFETCH( int, dialogType);

    QFETCH( TranslationSet, expected);

    // This will always be queried for when a language changes

    expected.insert("QApplication::QT_LAYOUT_DIRECTION::Translate this string to the string 'LTR' in left-to-right "

                       "languages or to 'RTL' in right-to-left languages (such as Hebrew and Arabic) to "

                       "get proper widget layout.");

    TransformTranslator translator;

#if defined(Q_OS_SYMBIAN) && defined(Q_CC_NOKIAX86)

    // Allow a little extra time or emulator startup delays cause failure

    QTimer::singleShot(5000, &translator, SLOT(install()));

#else

    QTimer::singleShot(500, &translator, SLOT(install()));

#endif

    switch (dialogType) {

    case InputDialog:

        (void)QInputDialog::getInteger(0, QLatin1String("title"), QLatin1String("label"));

        break;

    case ColorDialog:

#ifdef Q_WS_MAC

        QSKIP("The native color dialog is used on Mac OS", SkipSingle);

#else

        (void)QColorDialog::getColor();

#endif

        break;

    case FileDialog: {

#ifdef Q_WS_MAC

        QSKIP("The native file dialog is used on Mac OS", SkipSingle);

#endif

        QFileDialog dlg;

        dlg.setOption(QFileDialog::DontUseNativeDialog);

        QString tmpParentDir = QDir::tempPath() + "/languagechangetestdir";

        QString tmpDir = tmpParentDir + "/finaldir";

        QString fooName = tmpParentDir + "/foo";

        QDir dir;

        QCOMPARE(dir.mkpath(tmpDir), true);

#if defined(Q_OS_SYMBIAN) && defined(Q_CC_NOKIAX86)

        // Just create a new file instead of copying exe, because exe is not there in emulator

        {

            QFile fooFile(fooName);

            QVERIFY(fooFile.open(QIODevice::WriteOnly | QIODevice::Text));

            for(int i=0; i<2048; i++) // File needs to be big enough for size to read in KB

               fooFile.write("@");

        }

#else

        QCOMPARE(QFile::copy(QApplication::applicationFilePath(), fooName), true);

#endif

        dlg.setDirectory(tmpParentDir);

#ifdef Q_OS_WINCE

        dlg.setDirectory("\\Windows");

#endif

        dlg.setFileMode(QFileDialog::ExistingFiles);

        dlg.setViewMode(QFileDialog::Detail);

        dlg.exec();

#if defined(Q_OS_SYMBIAN) && defined(Q_CC_NOKIAX86)

        // increase the wait time because of increased delay caused by emulator startup

        QTest::qWait(15000);

#else

        QTest::qWait(3000);

#endif

        QCOMPARE(QFile::remove(fooName), true);

        QCOMPARE(dir.rmdir(tmpDir), true);

        QCOMPARE(dir.rmdir(tmpParentDir), true);

        break; }

    }

#if 0

    QList<QByteArray> list = translator.m_translations.toList();

    qSort(list);

    qDebug() << list;

#endif

    // In case we use a Color dialog, we do not want to test for

    // strings non existing in the dialog and which do not get

    // translated.

    if ((dialogType == ColorDialog) &&

#ifndef Q_OS_WINCE

        (qApp->desktop()->width() < 480 || qApp->desktop()->height() < 350)

#else

        true // On Qt/WinCE we always use compact mode

#endif

        ) {

        expected.remove("QColorDialog::&Basic colors");

        expected.remove("QColorDialog::&Custom colors");

        expected.remove("QColorDialog::&Define Custom Colors >>");

        expected.remove("QColorDialog::&Add to Custom Colors");

    }

    // see if all of our *expected* translations was translated.

    // (There might be more, but thats not that bad)

    QSet<QByteArray> commonTranslations = expected;

    commonTranslations.intersect(translator.m_translations);

    if (!expected.subtract(commonTranslations).isEmpty()) {

        qDebug() << "Missing:" << expected;

        if (!translator.m_translations.subtract(commonTranslations).isEmpty())

            qDebug() << "Unexpected:" << translator.m_translations;

    }

    QVERIFY(expected.isEmpty());

}

QTEST_MAIN(tst_languageChange)

#include "tst_languagechange.moc"