Geant4EventAction.h

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//==========================================================================
//  AIDA Detector description implementation for LCD
//--------------------------------------------------------------------------
// Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
// All rights reserved.
//
// For the licensing terms see $DD4hepINSTALL/LICENSE.
// For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
//
// Author     : M.Frank
//
//==========================================================================

#ifndef DD4HEP_DDG4_GEANT4EVENTACTION_H
#define DD4HEP_DDG4_GEANT4EVENTACTION_H

// Framework include files
#include "DDG4/Geant4Action.h"

// Forward declarations
class G4Event;

namespace DD4hep {

  namespace Simulation {

    // Forward declarations
    class Geant4EventAction;
    class Geant4SharedEventAction;
    class Geant4EventActionSequence;


    class Geant4EventAction : public Geant4Action {
    public:
      typedef Geant4SharedEventAction shared_type;
    protected:
      Geant4EventAction() = default;
      Geant4EventAction(const Geant4EventAction& copy) = delete;
      Geant4EventAction& operator=(const Geant4EventAction& copy) = delete;

    public:
      Geant4EventAction(Geant4Context* context, const std::string& nam);
      virtual ~Geant4EventAction();
      virtual void begin(const G4Event* event);
      virtual void end(const G4Event* event);
    };


    class Geant4SharedEventAction : public Geant4EventAction {
    protected:
      Geant4EventAction* m_action = 0;

    protected:
      Geant4SharedEventAction() = default;
      Geant4SharedEventAction(const Geant4SharedEventAction& copy) = delete;
      Geant4SharedEventAction& operator=(const Geant4SharedEventAction& copy) = delete;

    public:
      Geant4SharedEventAction(Geant4Context* context, const std::string& nam);
      virtual ~Geant4SharedEventAction();
      virtual void configureFiber(Geant4Context* thread_context);
      virtual void use(Geant4EventAction* action);
      virtual void begin(const G4Event* event);
      virtual void end(const G4Event* event);
    };


    class Geant4EventActionSequence : public Geant4Action {
    protected:
      CallbackSequence m_begin;
      CallbackSequence m_end;
      CallbackSequence m_final;
      Actors<Geant4EventAction> m_actors;

    protected:
      Geant4EventActionSequence() = default;
      Geant4EventActionSequence(const Geant4EventActionSequence& copy) = delete;
      Geant4EventActionSequence& operator=(const Geant4EventActionSequence& copy) = delete;

    public:
      Geant4EventActionSequence(Geant4Context* context, const std::string& nam);
      virtual ~Geant4EventActionSequence();
      virtual void updateContext(Geant4Context* ctxt);
      virtual void configureFiber(Geant4Context* thread_context);
      Geant4EventAction* get(const std::string& name) const;
      template <typename Q, typename T>
      void callAtBegin(Q* p, void (T::*f)(const G4Event*)) {
        m_begin.add(p, f);
      }
      template <typename Q, typename T>
      void callAtEnd(Q* p, void (T::*f)(const G4Event*)) {
        m_end.add(p, f);
      }
      template <typename Q, typename T>
      void callAtFinal(Q* p, void (T::*f)(const G4Event*)) {
        m_final.add(p, f);
      }
      void adopt(Geant4EventAction* action);
      virtual void begin(const G4Event* event);
      virtual void end(const G4Event* event);
    };

  }    // End namespace Simulation
}      // End namespace DD4hep

#endif // DD4HEP_DDG4_GEANT4EVENTACTION_H