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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include "controlstestutils_p.h"

#include <QtTest/qsignalspy.h>
#include <QtQml/qqmlcomponent.h>
#include <QtQuickControls2/qquickstyle.h>
#include <QtQuickTemplates2/private/qquickabstractbutton_p.h>
#include <QtQuickTemplates2/private/qquickapplicationwindow_p.h>

QQuickControlsTestUtils::QQuickControlsApplicationHelper::QQuickControlsApplicationHelper(QQmlDataTest *testCase,
    const QString &testFilePath, const QVariantMap &initialProperties, const QStringList &qmlImportPaths)
    : QQuickApplicationHelper(testCase, testFilePath, initialProperties, qmlImportPaths)
{
    if (ready)
        appWindow = qobject_cast<QQuickApplicationWindow*>(cleanup.data());
}

/*!
    \internal

    If \a style is different from the current style, this function will
    recreate the QML engine, clear type registrations and set the new style.

    Returns \c true if successful or if \c style is already set.
*/
bool QQuickControlsTestUtils::QQuickStyleHelper::updateStyle(const QString &style)
{
    // If it's not the first time a style has been set and the new style is not different, do nothing.
    if (!currentStyle.isEmpty() && style == currentStyle)
        return true;

    engine.reset();
    currentStyle = style;
    qmlClearTypeRegistrations();
    engine.reset(new QQmlEngine);
    QQuickStyle::setStyle(style);

    QQmlComponent component(engine.data());
    component.setData(QString::fromUtf8("import QtQuick\nimport QtQuick.Controls\n Control { }").toUtf8(), QUrl());
    if (!component.isReady())
        qWarning() << "Failed to load component:" << component.errorString();
    return component.isReady();
}

void QQuickControlsTestUtils::forEachControl(QQmlEngine *engine, const QString &qqc2ImportPath,
    const QString &sourcePath, const QString &targetPath, const QStringList &skipList,
    QQuickControlsTestUtils::ForEachCallback callback)
{
    // We cannot use QQmlComponent to load QML files directly from the source tree.
    // For styles that use internal QML types (eg. material/Ripple.qml), the source
    // dir would be added as an "implicit" import path overriding the actual import
    // path (qtbase/qml/QtQuick/Controls.2/Material). => The QML engine fails to load
    // the style C++ plugin from the implicit import path (the source dir).
    //
    // Therefore we only use the source tree for finding out the set of QML files that
    // a particular style implements, and then we locate the respective QML files in
    // the engine's import path. This way we can use QQmlComponent to load each QML file
    // for benchmarking.

    const QFileInfoList entries = QDir(qqc2ImportPath + QLatin1Char('/') + sourcePath).entryInfoList(
        QStringList(QStringLiteral("*.qml")), QDir::Files);
    for (const QFileInfo &entry : entries) {
        QString name = entry.baseName();
        if (!skipList.contains(name)) {
            const auto importPathList = engine->importPathList();
            for (const QString &importPath : importPathList) {
                QString name = entry.dir().dirName() + QLatin1Char('/') + entry.fileName();
                QString filePath = importPath + QLatin1Char('/') + targetPath + QLatin1Char('/') + entry.fileName();
                if (filePath.startsWith(QLatin1Char(':')))
                    filePath.prepend(QStringLiteral("qrc"));
                if (QFile::exists(filePath)) {
                    callback(name, QUrl::fromLocalFile(filePath));
                    break;
                } else {
                    QUrl url(filePath);
                    filePath = QQmlFile::urlToLocalFileOrQrc(filePath);
                    if (!filePath.isEmpty() && QFile::exists(filePath)) {
                        callback(name, url);
                        break;
                    }
                }
            }
        }
    }
}

void QQuickControlsTestUtils::addTestRowForEachControl(QQmlEngine *engine, const QString &qqc2ImportPath,
    const QString &sourcePath, const QString &targetPath, const QStringList &skipList)
{
    forEachControl(engine, qqc2ImportPath, sourcePath, targetPath, skipList, [&](const QString &relativePath, const QUrl &absoluteUrl) {
        QTest::newRow(qPrintable(relativePath)) << absoluteUrl;
    });
}

bool QQuickControlsTestUtils::verifyButtonClickable(QQuickAbstractButton *button)
{
    if (!button->window()) {
        qWarning() << "button" << button << "doesn't have an associated window";
        return false;
    }

    if (!button->isEnabled()) {
        qWarning() << "button" << button << "is not enabled";
        return false;
    }

    if (!button->isVisible()) {
        qWarning() << "button" << button << "is not visible";
        return false;
    }

    if (button->width() <= 0.0) {
        qWarning() << "button" << button << "must have a width greater than 0";
        return false;
    }

    if (button->height() <= 0.0) {
        qWarning() << "button" << button << "must have a height greater than 0";
        return false;
    }

    return true;
}

bool QQuickControlsTestUtils::clickButton(QQuickAbstractButton *button)
{
    if (!verifyButtonClickable(button))
        return false;

    QSignalSpy spy(button, &QQuickAbstractButton::clicked);
    if (!spy.isValid()) {
        qWarning() << "button" << button << "must have a valid clicked signal";
        return false;
    }

    const QPoint buttonCenter = button->mapToScene(QPointF(button->width() / 2, button->height() / 2)).toPoint();
    QTest::mouseClick(button->window(), Qt::LeftButton, Qt::NoModifier, buttonCenter);
    if (spy.size() != 1) {
        qWarning() << "clicked signal of button" << button << "was not emitted after clicking";
        return false;
    }

    return true;
}

bool QQuickControlsTestUtils::doubleClickButton(QQuickAbstractButton *button)
{
    if (!verifyButtonClickable(button))
        return false;

    QSignalSpy spy(button, &QQuickAbstractButton::clicked);
    if (!spy.isValid()) {
        qWarning() << "button" << button << "must have a valid doubleClicked signal";
        return false;
    }

    const QPoint buttonCenter = button->mapToScene(QPointF(button->width() / 2, button->height() / 2)).toPoint();
    QTest::mouseDClick(button->window(), Qt::LeftButton, Qt::NoModifier, buttonCenter);
    if (spy.size() != 1) {
        qWarning() << "doubleClicked signal of button" << button << "was not emitted after double-clicking";
        return false;
    }

    return true;
}

/*!
    Allows creating QQmlComponents in C++, which is useful for tests that need
    to check if items created from the component have the correct QML context.
*/
Q_INVOKABLE QQmlComponent *QQuickControlsTestUtils::ComponentCreator::createComponent(const QByteArray &data)
{
    std::unique_ptr<QQmlComponent> component(new QQmlComponent(qmlEngine(this)));
    component->setData(data, QUrl());
    if (component->isError())
        qmlWarning(this) << "Failed to create component from the following data:\n" << data;
    return component.release();
}

QString QQuickControlsTestUtils::StyleInfo::styleName() const
{
    return QQuickStyle::name();
}