ladybird/Libraries/LibGUI/GRadioButton.h
Andreas Kling ca538b6cee LibGUI: Add a simple GWidget class registry/factory
You can now register a GWidget subclass with REGISTER_GWIDGET(class)
and it will be available for factory construction through the new
GWidgetClassRegistration interface.

To obtain a GWidgetClassRegistration for a given class name, you call
GWidgetClassRegistration::find(class_name). You can also iterate over
all the registered classes using GWCR::for_each(callback).

This will be very useful for implementing a proper GUI designer, and
also in the future for things like script bindings.

NOTE: All of the registrations are done in GWidget.cpp at the moment
since I ran into trouble with the fricken linker pruning the global
constructors this mechanism relies on. :^)
2019-11-10 12:57:37 +01:00

35 lines
899 B
C++

#pragma once
#include <LibGUI/GAbstractButton.h>
class GRadioButton : public GAbstractButton {
C_OBJECT(GRadioButton)
public:
virtual ~GRadioButton() override;
virtual void click() override;
protected:
explicit GRadioButton(GWidget* parent);
explicit GRadioButton(const StringView& text, GWidget* parent);
virtual void paint_event(GPaintEvent&) override;
private:
// These don't make sense for a radio button, so hide them.
using GAbstractButton::auto_repeat_interval;
using GAbstractButton::set_auto_repeat_interval;
virtual bool is_radio_button() const final { return true; }
template<typename Callback>
void for_each_in_group(Callback);
static Size circle_size();
};
template<>
inline bool is<GRadioButton>(const CObject& object)
{
if (!is<GWidget>(object))
return false;
return to<GWidget>(object).is_radio_button();
}