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//
// --------------------------------------------------------------------
//      GEANT 4 class header file 
// --------------------------------------------------------------------
//
// Class Description:
//
//   Utility class to provide access to mode, state, target 
//   and manager verbosity for the error propagation classes.

// - Created. P.Arce, 2004.
// --------------------------------------------------------------------

#ifndef G4ErrorPropagatorData_HH
#define G4ErrorPropagatorData_HH

#include "globals.hh"

enum G4ErrorMode  { G4ErrorMode_PropForwards = 1,
                    G4ErrorMode_PropBackwards,
                    G4ErrorMode_PropTest };

enum G4ErrorState { G4ErrorState_PreInit = 1,
                    G4ErrorState_Init,
                    G4ErrorState_Propagating,
                    G4ErrorState_TargetCloserThanBoundary,
                    G4ErrorState_StoppedAtTarget };

enum G4ErrorStage  { G4ErrorStage_Inflation = 1,
                     G4ErrorStage_Deflation };

class G4ErrorTarget;

class G4ErrorPropagatorData 
{

public:  // with description

  static G4ErrorPropagatorData* GetErrorPropagatorData();
    // Singleton instance

  // Get and Set methods
  G4ErrorMode GetMode() const;
  void SetMode( G4ErrorMode mode );

  G4ErrorState GetState() const;
  void SetState( G4ErrorState sta );

  G4ErrorStage GetStage() const;
  void SetStage( G4ErrorStage sta );

  const G4ErrorTarget* GetTarget( G4bool mustExist = 0) const;
  void SetTarget( const G4ErrorTarget* target );

  static G4int verbose();
  static void SetVerbose( G4int ver );


private:

  G4ErrorPropagatorData();
  ~G4ErrorPropagatorData();
    // constructor and destructor are private

private:

  static G4ThreadLocal G4ErrorPropagatorData* fpInstance;

  G4ErrorMode theMode;

  G4ErrorState theState;

  G4ErrorStage theStage;

  G4ErrorTarget* theTarget;

  static G4ThreadLocal G4int theVerbosity;

};

#include "G4ErrorPropagatorData.icc"

#endif
