/*
 * Copyright (c) 2026-present, the Ladybird developers.
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <UI/Qt/WindowControlButton.h>

#include <QEnterEvent>
#include <QMouseEvent>
#include <QStyle>

namespace Ladybird {

static constexpr auto pressed_outside_property = "pressedOutside";

WindowControlButton::WindowControlButton(char const* object_name, QString const& tool_tip, QSize icon_size, QSize button_size, QWidget* parent)
    : QToolButton(parent)
{
    setObjectName(object_name);
    setToolTip(tool_tip);
    setIconSize(icon_size);
    setFixedSize(button_size);
    setFocusPolicy(Qt::NoFocus);
    setProperty(pressed_outside_property, false);
}

void WindowControlButton::enterEvent(QEnterEvent* event)
{
    QToolButton::enterEvent(event);

    if (!m_tracking_press)
        return;

    setDown(true);
    set_pressed_outside(false);
}

void WindowControlButton::leaveEvent(QEvent* event)
{
    QToolButton::leaveEvent(event);

    if (!m_tracking_press)
        return;

    setDown(false);
    set_pressed_outside(true);
}

void WindowControlButton::mouseMoveEvent(QMouseEvent* event)
{
    QToolButton::mouseMoveEvent(event);

    if (m_tracking_press)
        update_pressed_position(event->position().toPoint());
}

void WindowControlButton::mouseDoubleClickEvent(QMouseEvent* event)
{
    QToolButton::mouseDoubleClickEvent(event);

    reset_transient_state();
}

void WindowControlButton::mousePressEvent(QMouseEvent* event)
{
    if (event->button() == Qt::LeftButton) {
        m_tracking_press = true;
        set_pressed_outside(false);
    }

    QToolButton::mousePressEvent(event);
}

void WindowControlButton::mouseReleaseEvent(QMouseEvent* event)
{
    QToolButton::mouseReleaseEvent(event);

    reset_transient_state();
}

void WindowControlButton::reset_transient_state()
{
    m_tracking_press = false;
    setDown(false);
    set_pressed_outside(false);
}

void WindowControlButton::set_pressed_outside(bool pressed_outside)
{
    if (property(pressed_outside_property).toBool() == pressed_outside)
        return;

    setProperty(pressed_outside_property, pressed_outside);
    style()->unpolish(this);
    style()->polish(this);
    update();
}

void WindowControlButton::update_pressed_position(QPoint const& position)
{
    auto is_inside = rect().contains(position);
    setDown(is_inside);
    set_pressed_outside(!is_inside);
}

}