////////////////////////////////////////////////////////////////////////
/// \class RAT::TrackingMessenger
///
/// \brief   Messenger class to the Tracking class
///
/// \author P G Jones <p.g.jones@qmul.ac.uk>
/// \author S Langrock <s.langrock@qmul.ac.uk > -- contact person
///
/// REVISION HISTORY:\n
///     2014-05-25 : P G Jones - New File \n
///
/// \details Change tracking settings.
///
////////////////////////////////////////////////////////////////////////
#ifndef __RAT_TrackingMessenger__
#define __RAT_TrackingMessenger__

#include <G4UImessenger.hh>
#include <G4String.hh>

class G4UIdirectory;
class G4UIcmdWithAString;

namespace RAT
{
class TrackingAction;

class TrackingMessenger : public G4UImessenger
{
public:
  /// Construct the tracking messenger with a pointer to the TrackingAction
  ///
  /// @param[in] trackingAction pointer
  TrackingMessenger( TrackingAction* trackingAction );

  /// Destroy the messenger, delete commands
  virtual ~TrackingMessenger();

  /// Called by Geant4 when a command is invoked
  ///
  /// @param[in] command that has been invoked
  /// @param[in] value that was set
  void SetNewValue( G4UIcommand* command, G4String value );

protected:
  TrackingAction* fTrackingAction; ///< Pointer to instance to pass commands to

  G4UIdirectory* fTrackingDir; ///< The tracking UI directory
  G4UIcmdWithAString* fStoreTrackingCmd; ///< Command to store tracking, including options
  G4UIcmdWithAString* fOmitParticleCmd; ///< Command to omit tracking for a particle by name
};

} // namespace RAT

#endif