#include "widgetitemdelegate_p.h"

#include <QtGui/QMouseEvent>
#include <QtWidgets/QWidget>
#include <QtWidgets/QApplication>

extern Q_WIDGETS_EXPORT QWidget *qt_button_down;

namespace QWK {

    WidgetItemDelegate::WidgetItemDelegate() = default;

    WidgetItemDelegate::~WidgetItemDelegate() = default;

    QWindow *WidgetItemDelegate::window(QObject *obj) const {
        return static_cast<QWidget *>(obj)->windowHandle();
    }

    bool WidgetItemDelegate::isEnabled(QObject *obj) const {
        return static_cast<QWidget *>(obj)->isEnabled();
    }

    bool WidgetItemDelegate::isVisible(QObject *obj) const {
        return static_cast<QWidget *>(obj)->isVisible();
    }

    QRect WidgetItemDelegate::mapGeometryToScene(const QObject *obj) const {
        auto widget = static_cast<const QWidget *>(obj);
        const QPoint originPoint = widget->mapTo(widget->window(), QPoint(0, 0));
        const QSize size = widget->size();
        return {originPoint, size};
    }

    QWindow *WidgetItemDelegate::hostWindow(QObject *host) const {
        return static_cast<QWidget *>(host)->windowHandle();
    }

    bool WidgetItemDelegate::isHostSizeFixed(QObject *host) const {
        return false;
    }

    bool WidgetItemDelegate::resetQtGrabbedControl() const {
        if (qt_button_down) {
            static constexpr const auto invalidPos = QPoint{-99999, -99999};
            const auto event =
                new QMouseEvent(QEvent::MouseButtonRelease, invalidPos, invalidPos, invalidPos,
                                Qt::LeftButton, QGuiApplication::mouseButtons() ^ Qt::LeftButton,
                                QGuiApplication::keyboardModifiers());
            QApplication::postEvent(qt_button_down, event);
            qt_button_down = nullptr;
            return true;
        }
        return false;
    }

}