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#include <LibGUI/GBoxLayout.h>
#include <LibGUI/GStackWidget.h>
GStackWidget::GStackWidget(GWidget* parent)
: GWidget(parent)
{
}
GStackWidget::~GStackWidget()
{
}
void GStackWidget::set_active_widget(GWidget* widget)
{
if (widget == m_active_widget)
return;
if (m_active_widget)
m_active_widget->set_visible(false);
m_active_widget = widget;
if (m_active_widget) {
m_active_widget->set_relative_rect(rect());
m_active_widget->set_visible(true);
}
if (on_active_widget_change)
on_active_widget_change(m_active_widget);
}
void GStackWidget::resize_event(GResizeEvent& event)
{
if (!m_active_widget)
return;
m_active_widget->set_relative_rect({ {}, event.size() });
}
void GStackWidget::child_event(CChildEvent& event)
{
if (!event.child() || !is<GWidget>(*event.child()))
return GWidget::child_event(event);
auto& child = to<GWidget>(*event.child());
if (event.type() == GEvent::ChildAdded) {
if (!m_active_widget)
set_active_widget(&child);
else if (m_active_widget != &child)
child.set_visible(false);
} else if (event.type() == GEvent::ChildRemoved) {
if (m_active_widget == &child) {
GWidget* new_active_widget = nullptr;
for_each_child_widget([&](auto& new_child) {
new_active_widget = &new_child;
return IterationDecision::Break;
});
set_active_widget(new_active_widget);
}
}
GWidget::child_event(event);
}
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