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#pragma once
#include "UiEventArgs.h"
#include <cru/base/Event.h>
namespace cru::ui::events {
// TEventArgs must not be a reference type. This class help add reference.
// EventArgs must be reference because the IsHandled property must be settable.
template <typename TEventArgs>
class CRU_UI_API RoutedEvent {
friend controls::Window;
public:
static_assert(std::is_base_of_v<UiEventArgs, TEventArgs>,
"TEventArgs must be subclass of UiEventArgs.");
static_assert(!std::is_reference_v<TEventArgs>,
"TEventArgs must not be reference.");
using EventArgs = TEventArgs&;
explicit RoutedEvent(std::string name) : name_(std::move(name)) {}
std::string GetName() const { return name_; }
IEvent<TEventArgs&>* Direct() { return &direct_; }
IEvent<TEventArgs&>* Bubble() { return &bubble_; }
IEvent<TEventArgs&>* Tunnel() { return &tunnel_; }
private:
std::string name_;
Event<TEventArgs&> direct_;
Event<TEventArgs&> bubble_;
Event<TEventArgs&> tunnel_;
};
#define CRU_DEFINE_ROUTED_EVENT(name, arg_type) \
private: \
::cru::ui::events::RoutedEvent<arg_type> name##Event_{#name}; \
\
public: \
::cru::ui::events::RoutedEvent<arg_type>* name##Event() { \
return &name##Event_; \
}
} // namespace cru::ui::events
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