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#include <QtTest/QtTest>
#include "qprogressbar.h"
#include <qapplication.h>
#include <qstyleoption.h>
#include <qdebug.h>
#include <qtimer.h>
#include <QStyleFactory>

//TESTED_CLASS=
//TESTED_FILES=

class tst_QProgressBar : public QObject
{
Q_OBJECT
private slots:
    void getSetCheck();
    void minMaxSameValue();
    void destroyIndeterminate();
    void text();
    void format();
    void setValueRepaint();
    void sizeHint();

    void task245201_testChangeStyleAndDelete_data();
    void task245201_testChangeStyleAndDelete();
};

// Testing get/set functions
void tst_QProgressBar::getSetCheck()
{
    QProgressBar obj1;
    // bool QProgressBar::invertedAppearance()
    // void QProgressBar::setInvertedAppearance(bool)
    obj1.setInvertedAppearance(false);
    QCOMPARE(false, obj1.invertedAppearance());
    obj1.setInvertedAppearance(true);
    QCOMPARE(true, obj1.invertedAppearance());

    // int QProgressBar::minimum()
    // void QProgressBar::setMinimum(int)
    obj1.setMinimum(0);
    QCOMPARE(0, obj1.minimum());
    obj1.setMinimum(INT_MAX);
    QCOMPARE(INT_MAX, obj1.minimum());
    obj1.setMinimum(INT_MIN);
    QCOMPARE(INT_MIN, obj1.minimum());

    // int QProgressBar::maximum()
    // void QProgressBar::setMaximum(int)
    obj1.setMaximum(0);
    QCOMPARE(0, obj1.maximum());
    obj1.setMaximum(INT_MIN);
    QCOMPARE(INT_MIN, obj1.maximum());
    obj1.setMaximum(INT_MAX);
    QCOMPARE(INT_MAX, obj1.maximum());

    // int QProgressBar::value()
    // void QProgressBar::setValue(int)
    obj1.setValue(0);
    QCOMPARE(0, obj1.value());
    obj1.setValue(INT_MIN);
    QCOMPARE(INT_MIN, obj1.value());
    obj1.setValue(INT_MAX);
    QCOMPARE(INT_MAX, obj1.value());
}

void tst_QProgressBar::minMaxSameValue()
{
    QProgressBar bar;
    bar.setRange(10, 10);
    bar.setValue(10);
    bar.show();
}

void tst_QProgressBar::destroyIndeterminate()
{
    // This test crashes on styles that animate indeterminate / busy
    // progressbars, and forget to remove the bars from internal logics when
    // it's deleted.
    QPointer<QProgressBar> bar = new QProgressBar;
    bar->setMaximum(0);
    bar->show();

    QEventLoop loop;
    QTimer::singleShot(500, bar, SLOT(deleteLater()));
    QTimer::singleShot(3000, &loop, SLOT(quit()));
    loop.exec();

    QVERIFY(!bar);
}

void tst_QProgressBar::text()
{
    QProgressBar bar;
    bar.setRange(10, 10);
    bar.setValue(10);
    QCOMPARE(bar.text(), QString("100%"));
    bar.setRange(0, 10);
    QCOMPARE(bar.text(), QString("100%"));
    bar.setValue(5);
    QCOMPARE(bar.text(), QString("50%"));
    bar.setRange(0, 5);
    bar.setValue(0);
    bar.setRange(5, 5);
    QCOMPARE(bar.text(), QString());
}

class ProgressBar : public QProgressBar
{
    void paintEvent(QPaintEvent *event)
    {
        repainted = true;
        QProgressBar::paintEvent(event);
    }
public:
    bool repainted;
    using QProgressBar::initStyleOption;
};

void tst_QProgressBar::format()
{
    ProgressBar bar;
    bar.setRange(0, 10);
    bar.setValue(1);
    bar.show();

    QTest::qWait(2000);
    bar.repainted = false;
    bar.setFormat("%v of %m (%p%)");
    QTest::qWait(2000);
    QVERIFY(bar.repainted);
    bar.repainted = false;
    bar.setFormat("%v of %m (%p%)");
    qApp->processEvents();
#ifndef Q_WS_MAC 
    // The Mac scroll bar is animated, which means we get paint events all the time.
    QVERIFY(!bar.repainted);
#endif
    QCOMPARE(bar.text(), QString("1 of 10 (10%)"));
    bar.setRange(5, 5);
    bar.setValue(5);
    QCOMPARE(bar.text(), QString("5 of 0 (100%)"));
    bar.setRange(0, 5);
    bar.setValue(0);
    bar.setRange(5, 5);
    QCOMPARE(bar.text(), QString());
}

void tst_QProgressBar::setValueRepaint()
{
    ProgressBar pbar;
    pbar.setMinimum(0);
    pbar.setMaximum(10);
    pbar.setFormat("%v");
    pbar.show();
#ifdef Q_WS_X11
    qt_x11_wait_for_window_manager(&pbar);
#endif
    QApplication::processEvents();
    for (int i = pbar.minimum(); i < pbar.maximum(); ++i) {
        pbar.repainted = false;
        pbar.setValue(i);
        QTest::qWait(500);
        QVERIFY(pbar.repainted);
    }
}

void tst_QProgressBar::sizeHint()
{
    ProgressBar bar;
    bar.setMinimum(0);
    bar.setMaximum(10);
    bar.setValue(5);

    //test if the sizeHint is big enough
    QFontMetrics fm = bar.fontMetrics();
    QStyleOptionProgressBarV2 opt;
    bar.initStyleOption(&opt);
    QSize size = QSize(9 * 7 + fm.width(QLatin1Char('0')) * 4, fm.height() + 8);
    size= bar.style()->sizeFromContents(QStyle::CT_ProgressBar, &opt, size, &bar);
    QSize barSize = bar.sizeHint();
    QVERIFY(barSize.width() >= size.width());
    QCOMPARE(barSize.height(), size.height());
}

void tst_QProgressBar::task245201_testChangeStyleAndDelete_data()
{
    QTest::addColumn<QString>("style1_str");
    QTest::addColumn<QString>("style2_str");

    QTest::newRow("plastique-windows") << QString::fromLatin1("plastique") << QString::fromLatin1("windows");
    QTest::newRow("mlotif-windows") << QString::fromLatin1("motif") << QString::fromLatin1("windows");
    QTest::newRow("cleanlooks-cde") << QString::fromLatin1("cleanlooks") << QString::fromLatin1("cde");
    QTest::newRow("gtk-plastique") << QString::fromLatin1("gtk") << QString::fromLatin1("plastique");
}

void tst_QProgressBar::task245201_testChangeStyleAndDelete()
{
    QFETCH(QString, style1_str);
    QFETCH(QString, style2_str);

    QProgressBar *bar = new QProgressBar;

    QStyle *style = QStyleFactory::create(style1_str);
    bar->setStyle(style);
    bar->show();
    QStyle *style2 = QStyleFactory::create(style2_str);
    bar->setStyle(style2);
    QTest::qWait(10);

    delete bar;
    QTest::qWait(100); //should not crash
    delete style;
    delete style2;
}

QTEST_MAIN(tst_QProgressBar)
#include "tst_qprogressbar.moc"