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//
// G4MultiTrackingAction
//
// Class description:
//
// This class extends G4UserTrackingAction and allows multiple user-defined
// tracking actions to be used in the same job.
// The class is a vector of user-defined tracking actions; it owns and manages
// the dependent user-actions.
//
// Usage:
//   There is no need to explicitly use this class as long as the user actions
//   are set via G4UserActionInitialization::SetUserAction(), that can be
//   called several times. Explicitly this is what happens:
//   In user-defined action initialization:
//     G4MultiTrackingAction* action = new G4MultiTrackingAction;
//     action->push_back( G4UserTrackingActionUPtr( new MyUserTrackingAction );
//       [... add as many as needed ...]
//     SetUserAction( action );

// Author: Andrea Dotti, SLAC - 17 January 2016
// --------------------------------------------------------------------
#ifndef G4MULTITRACKINGACTION_HH
#define G4MULTITRACKINGACTION_HH

#include "G4UserTrackingAction.hh"

#include <memory>
#include <vector>

using G4UserTrackingActionUPtr = std::unique_ptr<G4UserTrackingAction>;
using G4UserTrackingActionVector = std::vector<G4UserTrackingActionUPtr>;

class G4MultiTrackingAction : public G4UserTrackingAction, public G4UserTrackingActionVector
{
 public:
  G4MultiTrackingAction() = default;
  ~G4MultiTrackingAction() override = default;
  void SetTrackingManagerPointer(G4TrackingManager* pVal) override;
  void PreUserTrackingAction(const G4Track*) override;
  void PostUserTrackingAction(const G4Track*) override;
};

#endif