StateChangeDistributor.hh

Go to the documentation of this file.

#ifndef STATECHANGEDISTRIBUTOR_HH
#define STATECHANGEDISTRIBUTOR_HH
 
#include "EmuTime.hh"
#include <memory>
#include <vector>
 
namespace openmsx {
 
class StateChangeListener;
class StateChangeRecorder;
class StateChange;
 
class StateChangeDistributor
{
public:
        using EventPtr = std::shared_ptr<StateChange>;
 
        StateChangeDistributor() = default;
        ~StateChangeDistributor();
 
        void registerListener  (StateChangeListener& listener);
        void unregisterListener(StateChangeListener& listener);
 
        void registerRecorder  (StateChangeRecorder& recorder);
        void unregisterRecorder(StateChangeRecorder& recorder);
 
        void distributeNew   (const EventPtr& event);
        void distributeReplay(const EventPtr& event);
 
        void stopReplay(EmuTime::param time);
 
        void setViewOnlyMode(bool value) { viewOnlyMode = value; }
        [[nodiscard]] bool isViewOnlyMode() const { return viewOnlyMode; }
 
        [[nodiscard]] bool isReplaying() const;
 
private:
        [[nodiscard]] bool isRegistered(StateChangeListener* listener) const;
        void distribute(const EventPtr& event);
 
private:
        std::vector<StateChangeListener*> listeners; // unordered
        StateChangeRecorder* recorder = nullptr;
        bool viewOnlyMode = false;
};
 
} // namespace openmsx
 
#endif