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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/JsonObject.h>
#include <LibCore/Timer.h>
#include <LibGUI/AbstractButton.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Window.h>
#include <LibGfx/Palette.h>
namespace GUI {
AbstractButton::AbstractButton(String text)
{
set_text(move(text));
set_focus_policy(GUI::FocusPolicy::StrongFocus);
set_background_role(Gfx::ColorRole::Button);
set_foreground_role(Gfx::ColorRole::ButtonText);
m_auto_repeat_timer = add<Core::Timer>();
m_auto_repeat_timer->on_timeout = [this] {
click();
};
REGISTER_STRING_PROPERTY("text", text, set_text);
REGISTER_BOOL_PROPERTY("checked", is_checked, set_checked);
REGISTER_BOOL_PROPERTY("checkable", is_checkable, set_checkable);
REGISTER_BOOL_PROPERTY("exclusive", is_exclusive, set_exclusive);
}
AbstractButton::~AbstractButton()
{
}
void AbstractButton::set_text(String text)
{
if (m_text == text)
return;
m_text = move(text);
update();
}
void AbstractButton::set_checked(bool checked, AllowCallback allow_callback)
{
if (m_checked == checked)
return;
m_checked = checked;
if (is_exclusive() && checked && parent_widget()) {
bool sibling_had_focus = false;
parent_widget()->for_each_child_of_type<AbstractButton>([&](auto& sibling) {
if (!sibling.is_exclusive())
return IterationDecision::Continue;
if (window() && window()->focused_widget() == &sibling)
sibling_had_focus = true;
if (!sibling.is_checked())
return IterationDecision::Continue;
sibling.m_checked = false;
sibling.update();
if (sibling.on_checked)
sibling.on_checked(false);
return IterationDecision::Continue;
});
m_checked = true;
if (sibling_had_focus)
set_focus(true);
}
if (is_exclusive() && parent_widget()) {
// In a group of exclusive checkable buttons, only the currently checked button is focusable.
parent_widget()->for_each_child_of_type<GUI::AbstractButton>([&](auto& button) {
if (button.is_exclusive() && button.is_checkable())
button.set_focus_policy(button.is_checked() ? GUI::FocusPolicy::StrongFocus : GUI::FocusPolicy::NoFocus);
return IterationDecision::Continue;
});
}
update();
if (on_checked && allow_callback == AllowCallback::Yes)
on_checked(checked);
}
void AbstractButton::set_checkable(bool checkable)
{
if (m_checkable == checkable)
return;
m_checkable = checkable;
update();
}
void AbstractButton::mousemove_event(MouseEvent& event)
{
bool is_over = rect().contains(event.position());
m_hovered = is_over;
if (event.buttons() & MouseButton::Primary) {
bool being_pressed = is_over;
if (being_pressed != m_being_pressed) {
m_being_pressed = being_pressed;
if (m_auto_repeat_interval) {
if (!m_being_pressed)
m_auto_repeat_timer->stop();
else
m_auto_repeat_timer->start(m_auto_repeat_interval);
}
update();
}
}
Widget::mousemove_event(event);
}
void AbstractButton::mousedown_event(MouseEvent& event)
{
if (event.button() == MouseButton::Primary) {
m_being_pressed = true;
repaint();
if (m_auto_repeat_interval) {
click();
m_auto_repeat_timer->start(m_auto_repeat_interval);
}
event.accept();
}
Widget::mousedown_event(event);
}
void AbstractButton::mouseup_event(MouseEvent& event)
{
if (event.button() == MouseButton::Primary && m_being_pressed) {
bool was_auto_repeating = m_auto_repeat_timer->is_active();
m_auto_repeat_timer->stop();
bool was_being_pressed = m_being_pressed;
m_being_pressed = false;
repaint();
if (was_being_pressed && !was_auto_repeating)
click(event.modifiers());
}
Widget::mouseup_event(event);
}
void AbstractButton::enter_event(Core::Event&)
{
m_hovered = true;
update();
}
void AbstractButton::leave_event(Core::Event& event)
{
m_hovered = false;
if (m_being_keyboard_pressed)
m_being_keyboard_pressed = m_being_pressed = false;
update();
event.accept();
Widget::leave_event(event);
}
void AbstractButton::focusout_event(GUI::FocusEvent& event)
{
if (m_being_keyboard_pressed) {
m_being_pressed = m_being_keyboard_pressed = false;
event.accept();
update();
}
Widget::focusout_event(event);
}
void AbstractButton::keydown_event(KeyEvent& event)
{
if (event.key() == KeyCode::Key_Return || event.key() == KeyCode::Key_Space) {
m_being_pressed = m_being_keyboard_pressed = true;
update();
event.accept();
return;
} else if (m_being_pressed && event.key() == KeyCode::Key_Escape) {
m_being_pressed = m_being_keyboard_pressed = false;
update();
event.accept();
return;
}
// Arrow keys switch the currently checked option within an exclusive group of checkable buttons.
if (event.is_arrow_key() && !event.modifiers() && is_exclusive() && is_checkable() && parent_widget()) {
event.accept();
Vector<GUI::AbstractButton&> exclusive_siblings;
size_t this_index = 0;
parent_widget()->for_each_child_of_type<GUI::AbstractButton>([&](auto& sibling) {
if (&sibling == this) {
VERIFY(is_enabled());
this_index = exclusive_siblings.size();
}
if (sibling.is_exclusive() && sibling.is_checkable() && sibling.is_enabled())
exclusive_siblings.append(sibling);
return IterationDecision::Continue;
});
if (exclusive_siblings.size() <= 1)
return;
size_t new_checked_index;
if (event.key() == KeyCode::Key_Left || event.key() == KeyCode::Key_Up)
new_checked_index = this_index == 0 ? exclusive_siblings.size() - 1 : this_index - 1;
else
new_checked_index = this_index == exclusive_siblings.size() - 1 ? 0 : this_index + 1;
exclusive_siblings[new_checked_index].set_checked(true);
return;
}
Widget::keydown_event(event);
}
void AbstractButton::keyup_event(KeyEvent& event)
{
bool was_being_pressed = m_being_pressed;
if (was_being_pressed && (event.key() == KeyCode::Key_Return || event.key() == KeyCode::Key_Space)) {
m_being_pressed = m_being_keyboard_pressed = false;
click(event.modifiers());
update();
event.accept();
return;
}
Widget::keyup_event(event);
}
void AbstractButton::paint_text(Painter& painter, const Gfx::IntRect& rect, const Gfx::Font& font, Gfx::TextAlignment text_alignment, Gfx::TextWrapping text_wrapping)
{
auto clipped_rect = rect.intersected(this->rect());
if (!is_enabled()) {
painter.draw_text(clipped_rect.translated(1, 1), text(), font, text_alignment, Color::White, Gfx::TextElision::Right, text_wrapping);
painter.draw_text(clipped_rect, text(), font, text_alignment, Color::from_rgb(0x808080), Gfx::TextElision::Right, text_wrapping);
return;
}
if (text().is_empty())
return;
painter.draw_text(clipped_rect, text(), font, text_alignment, palette().color(foreground_role()), Gfx::TextElision::Right, text_wrapping);
}
void AbstractButton::change_event(Event& event)
{
if (event.type() == Event::Type::EnabledChange) {
if (!is_enabled()) {
bool was_being_pressed = m_being_pressed;
m_being_pressed = false;
if (was_being_pressed)
update();
}
}
Widget::change_event(event);
}
}
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