// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only


#include <QTest>

#include <qapplication.h>
#include <qdebug.h>
#include <qprogressbar.h>
#include <qprogressdialog.h>
#include <qpushbutton.h>
#include <qlabel.h>
#include <qpointer.h>
#include <qthread.h>
#include <qtranslator.h>

class tst_QProgressDialog : public QObject
{
    Q_OBJECT

private Q_SLOTS:
    void cleanup();
    void autoShow_data();
    void autoShow();
    void autoShowCtor();
    void getSetCheck();
    void task198202();
    void QTBUG_31046();
    void QTBUG_19983();
    void settingCustomWidgets();
    void i18n();
    void setValueReentrancyGuard();
};

void tst_QProgressDialog::cleanup()
{
    QVERIFY(QApplication::topLevelWindows().empty());
}

void tst_QProgressDialog::autoShow_data()
{
    QTest::addColumn<int>("min");
    QTest::addColumn<int>("max");
    QTest::addColumn<int>("value"); // initial setValue call
    QTest::addColumn<int>("delay"); // then we wait for this long, and setValue(min+1)
    QTest::addColumn<int>("minDuration");
    QTest::addColumn<bool>("expectedAutoShow");

    // Check that autoshow works even when not starting at 0
    QTest::newRow("50_to_100_slow_shown") << 50 << 100 << 50 << 100 << 100 << true; // 50*100ms = 5s
    QTest::newRow("50_to_100_fast_not_shown") << 50 << 100 << 50 << 1 << 100 << false; // 1ms is too short to even start estimating
    QTest::newRow("50_to_60_high_minDuration_not_shown") << 50 << 60 << 50 << 100 << 2000 << false; // 10*100ms = 1s < 2s

    // Check that setValue(0) still starts the timer as previously documented
    QTest::newRow("50_to_100_slow_0_compat") << 50 << 100 << 0 << 100 << 100 << true; // 50*100ms = 5s
    QTest::newRow("50_to_100_fast_0_compat") << 50 << 100 << 0 << 1 << 100 << false; // 1ms is too short to even start estimating
    QTest::newRow("50_to_60_high_minDuration_0_compat") << 50 << 60 << 0 << 100 << 2000 << false; // 10*100ms = 1s < 2s

    // Check the typical case of starting at 0
    QTest::newRow("0_to_100_slow_shown") << 0 << 100 << 0 << 100 << 100 << true; // 100*100ms = 10s > 100ms
    QTest::newRow("0_to_10_slow_shown") << 0 << 10 << 0 << 100 << 500 << true; // 10*100ms = 1s > 0.5s
    QTest::newRow("0_to_10_high_minDuration_not_shown") << 0 << 10 << 0 << 100 << 2000 << false; // 10*100ms = 1s < 2s

    // Check the special case of going via 0 at some point
    QTest::newRow("-1_to_1_slow_shown") << -1 << 1 << -1 << 200 << 100 << true; // 1*200ms = 200ms > 100ms
    QTest::newRow("-1_to_1_fast_not_shown") << -1 << 1 << -1 << 10 << 100 << false; // 10ms is too short to even start estimating
    QTest::newRow("-1_to_1_high_minDuration_not_shown") << -1 << 1 << -1 << 100 << 2000 << false; // 1*100ms = 100ms < 2s

}

void tst_QProgressDialog::autoShow()
{
    QFETCH(int, min);
    QFETCH(int, max);
    QFETCH(int, value);
    QFETCH(int, delay);
    QFETCH(int, minDuration);
    QFETCH(bool, expectedAutoShow);

    QProgressDialog dlg("", "", min, max);
    if (minDuration != dlg.minimumDuration())
        dlg.setMinimumDuration(minDuration);
    dlg.reset(); // cancel the timer started in the constructor,
                 // in order to test for the setValue() behavior instead
                 // See autoShowCtor() for the ctor timer check
    dlg.setValue(value);
    QThread::sleep(std::chrono::milliseconds{delay});
    dlg.setValue(min+1);
    QCOMPARE(dlg.isVisible(), expectedAutoShow);
}

void tst_QProgressDialog::autoShowCtor()
{
    QProgressDialog dlg;
    QVERIFY(!dlg.isVisible());
    QThread::sleep(std::chrono::milliseconds{dlg.minimumDuration()});
    QTRY_VERIFY(dlg.isVisible());
}

// Testing get/set functions
void tst_QProgressDialog::getSetCheck()
{
    QProgressDialog obj1;
    // bool QProgressDialog::autoReset()
    // void QProgressDialog::setAutoReset(bool)
    obj1.setAutoReset(false);
    QCOMPARE(false, obj1.autoReset());
    obj1.setAutoReset(true);
    QCOMPARE(true, obj1.autoReset());

    // bool QProgressDialog::autoClose()
    // void QProgressDialog::setAutoClose(bool)
    obj1.setAutoClose(false);
    QCOMPARE(false, obj1.autoClose());
    obj1.setAutoClose(true);
    QCOMPARE(true, obj1.autoClose());

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

    // int QProgressDialog::value()
    // void QProgressDialog::setValue(int)
    obj1.setMaximum(INT_MAX);
    obj1.setMinimum(INT_MIN);
    obj1.setValue(0);
    QCOMPARE(0, obj1.value());
    obj1.setValue(INT_MIN+1);
    QCOMPARE(INT_MIN+1, obj1.value());
    obj1.setValue(INT_MIN);
    QCOMPARE(INT_MIN, obj1.value());
    obj1.setValue(INT_MAX-1);
    QCOMPARE(INT_MAX-1, obj1.value());

    obj1.setValue(INT_MAX);
    QCOMPARE(INT_MIN, obj1.value()); // We set autoReset, the thing is reset

    obj1.setAutoReset(false);
    obj1.setValue(INT_MAX);
    QCOMPARE(INT_MAX, obj1.value());
    obj1.setAutoReset(true);

    // int QProgressDialog::minimumDuration()
    // void QProgressDialog::setMinimumDuration(int)
    obj1.setMinimumDuration(0);
    QCOMPARE(0, obj1.minimumDuration());
    obj1.setMinimumDuration(INT_MIN);
    QCOMPARE(INT_MIN, obj1.minimumDuration());
    obj1.setMinimumDuration(INT_MAX);
    QCOMPARE(INT_MAX, obj1.minimumDuration());
}

void tst_QProgressDialog::task198202()
{
    //should not crash
    QProgressDialog dlg(QLatin1String("test"),QLatin1String("test"),1,10);
    dlg.show();
    QVERIFY(QTest::qWaitForWindowExposed(&dlg));
    int futureHeight = dlg.sizeHint().height() - dlg.findChild<QLabel*>()->sizeHint().height();
    dlg.setLabel(0);
    QTest::ignoreMessage(QtWarningMsg, "QProgressDialog::setBar: Cannot set a null progress bar");
    dlg.setBar(0);
    QTRY_COMPARE(dlg.sizeHint().height(), futureHeight);
}

void tst_QProgressDialog::QTBUG_31046()
{
    QProgressDialog dlg("", "", 50, 60);
    dlg.setValue(0);
    QThread::sleep(std::chrono::milliseconds{200});
    dlg.setValue(50);
    QCOMPARE(50, dlg.value());
}

void tst_QProgressDialog::QTBUG_19983()
{
    QProgressDialog tempDlg;
    tempDlg.setRange(0, 0);
    tempDlg.setLabelText("This is a test.");

    QPushButton *btnOne = new QPushButton("Cancel", &tempDlg);
    tempDlg.setCancelButton(btnOne);
    tempDlg.show();
    QVERIFY(QTest::qWaitForWindowExposed(&tempDlg));
    const auto btnOneGeometry = btnOne->geometry();
    QVERIFY(QPoint(0,0) != btnOneGeometry.topLeft());

    tempDlg.cancel();
    QVERIFY(!tempDlg.isVisible());

    QPushButton *btnTwo = new QPushButton("Cancel", &tempDlg);
    tempDlg.setCancelButton(btnTwo);
    tempDlg.show();
    QVERIFY(QTest::qWaitForWindowExposed(&tempDlg));
    QCOMPARE(btnOneGeometry, btnTwo->geometry());
}

void tst_QProgressDialog::settingCustomWidgets()
{
    QPointer<QLabel> l = new QLabel;
    QPointer<QPushButton> btn = new QPushButton;
    QPointer<QProgressBar> bar = new QProgressBar;
    QVERIFY(!l->parent());
    QVERIFY(!btn->parent());
    QVERIFY(!bar->parent());

    {
        QProgressDialog dlg;

        QVERIFY(!dlg.isAncestorOf(l));
        dlg.setLabel(l);
        QVERIFY(dlg.isAncestorOf(l));
        QTest::ignoreMessage(QtWarningMsg, "QProgressDialog::setLabel: Attempt to set the same label again");
        dlg.setLabel(l);          // setting the same widget again should not crash
        QVERIFY(l);               // and not delete the (old == new) widget

        QVERIFY(!dlg.isAncestorOf(btn));
        dlg.setCancelButton(btn);
        QVERIFY(dlg.isAncestorOf(btn));
        QTest::ignoreMessage(QtWarningMsg, "QProgressDialog::setCancelButton: Attempt to set the same button again");
        dlg.setCancelButton(btn); // setting the same widget again should not crash
        QVERIFY(btn);             // and not delete the (old == new) widget

        QVERIFY(!dlg.isAncestorOf(bar));
        dlg.setBar(bar);
        QVERIFY(dlg.isAncestorOf(bar));
        QTest::ignoreMessage(QtWarningMsg, "QProgressDialog::setBar: Attempt to set the same progress bar again");
        dlg.setBar(bar);          // setting the same widget again should not crash
        QVERIFY(bar);             // and not delete the (old == new) widget
    }

    QVERIFY(!l);
    QVERIFY(!btn);
    QVERIFY(!bar);
}

class QTestTranslator : public QTranslator
{
    const QString m_str;
public:
    explicit QTestTranslator(QString str) : m_str(std::move(str)) {}

    QString translate(const char *, const char *sourceText, const char *, int) const override
    { return m_str + sourceText + m_str; }

    bool isEmpty() const override { return false; }
};

template <typename Translator>
class QTranslatorGuard {
    Translator t;
public:
    template <typename Arg>
    explicit QTranslatorGuard(Arg a) : t(std::move(a))
    { qApp->installTranslator(&t); }
    ~QTranslatorGuard()
    { qApp->removeTranslator(&t); }
};

void tst_QProgressDialog::i18n()
{
    QProgressDialog dlg;
    QPushButton *btn = dlg.findChild<QPushButton*>();
    QVERIFY(btn);
    const QString xxx = QStringLiteral("xxx");
    {
        QTranslatorGuard<QTestTranslator> guard(xxx);
        {
            QPushButton *btn = dlg.findChild<QPushButton*>();
            QVERIFY(btn);
            QTRY_COMPARE(btn->text(), QProgressDialog::tr("Cancel"));
            QVERIFY(btn->text().startsWith(xxx));
        }
    }
    QVERIFY(btn);
    QTRY_COMPARE(btn->text(), QProgressDialog::tr("Cancel"));
    QVERIFY(!btn->text().startsWith(xxx));
}

void tst_QProgressDialog::setValueReentrancyGuard()
{
    // Tests setValue() of window modal QProgressBar with
    // Qt::QueuedConnection:
    // This test crashes with a stack overflow if the boolean
    // guard "processingEvents" that prevents reentranct calls
    // to QCoreApplication::processEvents() within setValue()
    // has not been implemented

    constexpr int steps = 100; // Should be at least 50 to test for crash

    QProgressDialog dlg("Testing setValue reentrancy guard...", QString(), 0, steps);
    dlg.setWindowModality(Qt::WindowModal);
    dlg.setMinimumDuration(0);
    dlg.setAutoReset(false);

    // Simulate a quick work loop
    for (int i = 0; i <= steps; ++i)
        QMetaObject::invokeMethod(&dlg, "setValue", Qt::QueuedConnection, Q_ARG(int, i));

    QTRY_COMPARE(dlg.value(), steps);
}

QTEST_MAIN(tst_QProgressDialog)
#include "tst_qprogressdialog.moc"
