MSXEventDistributor.hh

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#ifndef MSXEVENTDISTRIBUTOR_HH
#define MSXEVENTDISTRIBUTOR_HH
 
#include "EmuTime.hh"
#include <memory>
#include <vector>
 
namespace openmsx {
 
class MSXEventListener;
class Event;
 
class MSXEventDistributor
{
public:
        using EventPtr = std::shared_ptr<const Event>;
 
        MSXEventDistributor(const MSXEventDistributor&) = delete;
        MSXEventDistributor& operator=(const MSXEventDistributor&) = delete;
 
        MSXEventDistributor() = default;
        ~MSXEventDistributor();
 
        void registerEventListener(MSXEventListener& listener);
 
        void unregisterEventListener(MSXEventListener& listener);
 
        void distributeEvent(const EventPtr& event, EmuTime::param time);
 
private:
        [[nodiscard]] bool isRegistered(MSXEventListener* listener) const;
 
private:
        std::vector<MSXEventListener*> listeners; // unordered
        std::vector<MSXEventListener*> listenersCopy; // see distributeEvent()
};
 
} // namespace openmsx
 
#endif