StateChangeDistributor.hh

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#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; }
        bool isViewOnlyMode() const { return viewOnlyMode; }

        bool isReplaying() const;

private:
        bool isRegistered(StateChangeListener* listener) const;
        void distribute(const EventPtr& event);

        std::vector<StateChangeListener*> listeners; // unordered
        StateChangeRecorder* recorder = nullptr;
        bool viewOnlyMode = false;
};

} // namespace openmsx

#endif