EventAction.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2020 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

#include <map>
#include <memory>
#include <string>

#include <G4UserEventAction.hh>
#include <HepMC3/GenEvent.h>
#include <globals.hh>

namespace ActsExamples::Geant4::HepMC3 {

class EventAction final : public G4UserEventAction {
 public:
  static EventAction* instance();

  EventAction(std::vector<std::string> processFilter);
  ~EventAction() override;

  void BeginOfEventAction(const G4Event* event) override;

  void EndOfEventAction(const G4Event* event) override;

  void clear();

  ::HepMC3::GenEvent& event();

 private:
  static EventAction* s_instance;
  ::HepMC3::GenEvent m_event;
  std::vector<std::string> m_processFilter;
};
}  // namespace ActsExamples::Geant4::HepMC3