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#include <QtTest/QtTest>

#include <QStyleOption>

class tst_QStyleOption: public QObject 

{

    Q_OBJECT

private slots:

    void qstyleoptioncast_data();

    void qstyleoptioncast();

    void copyconstructors();

};

// Just a simple container for QStyleOption-pointer 

struct StyleOptionPointerBase

{

    QStyleOption *pointer;

    StyleOptionPointerBase(QStyleOption *p = 0) : pointer(p) { }

    virtual ~StyleOptionPointerBase() { pointer = 0; }

};

template <typename T>

struct StyleOptionPointer: public StyleOptionPointerBase

{

    StyleOptionPointer(T *p = 0): StyleOptionPointerBase(p) {}

    ~StyleOptionPointer() { delete static_cast<T *>(pointer); pointer = 0; }

};

Q_DECLARE_METATYPE(StyleOptionPointerBase*)

template <typename T>

inline StyleOptionPointerBase *stylePtr(T *ptr) { return new StyleOptionPointer<T>(ptr); }

void tst_QStyleOption::qstyleoptioncast_data()

{

    QTest::addColumn<StyleOptionPointerBase *>("testOption");

    QTest::addColumn<bool>("canCastToComplex");

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

    QTest::newRow("optionDefault") << stylePtr(new QStyleOption) << false << int(QStyleOption::SO_Default);

    QTest::newRow("optionButton") << stylePtr(new QStyleOptionButton) << false << int(QStyleOption::SO_Button);

    QTest::newRow("optionComboBox") << stylePtr(new QStyleOptionComboBox) << true << int(QStyleOption::SO_ComboBox);

    QTest::newRow("optionComplex") << stylePtr(new QStyleOptionComplex) << true << int(QStyleOption::SO_Complex);

    QTest::newRow("optionDockWidget") << stylePtr(new QStyleOptionDockWidget) << false << int(QStyleOption::SO_DockWidget);

    QTest::newRow("optionFocusRect") << stylePtr(new QStyleOptionFocusRect) << false << int(QStyleOption::SO_FocusRect);

    QTest::newRow("optionFrame") << stylePtr(new QStyleOptionFrame) << false << int(QStyleOption::SO_Frame);

    QTest::newRow("optionHeader") << stylePtr(new QStyleOptionHeader) << false << int(QStyleOption::SO_Header);

    QTest::newRow("optionMenuItem") << stylePtr(new QStyleOptionMenuItem) << false << int(QStyleOption::SO_MenuItem);

    QTest::newRow("optionProgressBar") << stylePtr(new QStyleOptionProgressBar) << false << int(QStyleOption::SO_ProgressBar);

    QTest::newRow("optionQ3DockWindow") << stylePtr(new QStyleOptionQ3DockWindow) << false << int(QStyleOption::SO_Q3DockWindow);

    QTest::newRow("optionQ3ListView") << stylePtr(new QStyleOptionQ3ListView) << true << int(QStyleOption::SO_Q3ListView);

    QTest::newRow("optionQ3ListViewItem") << stylePtr(new QStyleOptionQ3ListViewItem) << false << int(QStyleOption::SO_Q3ListViewItem);

    QTest::newRow("optionSlider") << stylePtr(new QStyleOptionSlider) << true << int(QStyleOption::SO_Slider);

    QTest::newRow("optionSpinBox") << stylePtr(new QStyleOptionSpinBox) << true << int(QStyleOption::SO_SpinBox);

    QTest::newRow("optionTab") << stylePtr(new QStyleOptionTab) << false << int(QStyleOption::SO_Tab);

    QTest::newRow("optionTitleBar") << stylePtr(new QStyleOptionTitleBar) << true << int(QStyleOption::SO_TitleBar);

    QTest::newRow("optionToolBox") << stylePtr(new QStyleOptionToolBox) << false << int(QStyleOption::SO_ToolBox);

    QTest::newRow("optionToolButton") << stylePtr(new QStyleOptionToolButton) << true << int(QStyleOption::SO_ToolButton);

    QTest::newRow("optionViewItem") << stylePtr(new QStyleOptionViewItem) << false << int(QStyleOption::SO_ViewItem);

    QTest::newRow("optionGraphicsItem") << stylePtr(new QStyleOptionGraphicsItem) << false << int(QStyleOption::SO_GraphicsItem);

}

void tst_QStyleOption::qstyleoptioncast()

{

    QFETCH(StyleOptionPointerBase *, testOption);

    QFETCH(bool, canCastToComplex);

    QFETCH(int, type);

    QVERIFY(testOption->pointer != 0);

    QCOMPARE(testOption->pointer->type, type);

    // Cast to common base class

    QStyleOption *castOption = qstyleoption_cast<QStyleOption*>(testOption->pointer);

    QVERIFY(castOption != 0);

    // Cast to complex base class

    castOption = qstyleoption_cast<QStyleOptionComplex*>(testOption->pointer);

    QCOMPARE(canCastToComplex, (castOption != 0));

    // Cast to combo box

    castOption = qstyleoption_cast<QStyleOptionComboBox*>(testOption->pointer);

    QCOMPARE((castOption != 0),(testOption->pointer->type == QStyleOption::SO_ComboBox));

    // Cast to button

    castOption = qstyleoption_cast<QStyleOptionButton*>(testOption->pointer);

    QCOMPARE((castOption != 0),(testOption->pointer->type == QStyleOption::SO_Button));

    // Cast to lower version

    testOption->pointer->version += 1;

    castOption = qstyleoption_cast<QStyleOption*>(testOption->pointer);

    QVERIFY(castOption);

    // Cast a null pointer

    castOption = qstyleoption_cast<QStyleOption*>((QStyleOption*)0);

    QCOMPARE(castOption,(QStyleOption*)0);

    // Deallocate

    delete testOption;

}

void tst_QStyleOption::copyconstructors()

{

    QStyleOptionFrame frame;

    QStyleOptionFrameV2 frame2(frame);

    QCOMPARE(frame2.version, int(QStyleOptionFrameV2::Version));

    frame2 = frame;

    QCOMPARE(frame2.version, int(QStyleOptionFrameV2::Version));

    QStyleOptionProgressBar bar;

    QStyleOptionProgressBarV2 bar2(bar);

    QCOMPARE(bar2.version, int(QStyleOptionProgressBarV2::Version));

    bar2 = bar;

    QCOMPARE(bar2.version, int(QStyleOptionProgressBarV2::Version));

}

QTEST_MAIN(tst_QStyleOption)

#include "tst_qstyleoption.moc"