G4StateManager.hh

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//
//
// $Id: G4StateManager.hh 110286 2018-05-18 09:40:01Z gcosmo $
//
// 
// ------------------------------------------------------------
//      GEANT 4 class header file 
//
//
//       ---------------- G4StateManager ----------------
//
// Authors: G.Cosmo, M.Asai - November 1996
//
// -------------------------------------------------------------
//
// Class Description:
//
// Class responsible for handling and updating the running state
// of the Geant4 application during its different phases.
// The class is a singleton, it can be accessed via the public
// method G4StateManager::GetStateManager().
//
// States of Geant4 are defined in G4ApplicationState.

// -------------------------------------------------------------

#ifndef G4StateManager_h
#define G4StateManager_h 1

#include <vector>
#include "G4Types.hh"
#include "G4String.hh"
#include "G4ApplicationState.hh"
#include "G4VStateDependent.hh"
#include "G4VExceptionHandler.hh"

class G4StateManager
{

public: // with description

  static G4StateManager* GetStateManager();
    // The G4StateManager class is a singleton class and the pointer
    // to the only one existing object can be obtained by this static 
    // method.

protected:

  G4StateManager();

public:

  ~G4StateManager();

public: // with description

  G4ApplicationState GetCurrentState() const;
    // Returns the current state
  G4ApplicationState GetPreviousState() const;
    // Returns the previous state
  G4bool SetNewState(G4ApplicationState requestedState);
    // Set Geant4 to a new state.
    // In case the request is irregal, false will be returned
    // and the state of Geant4 will not be changed.
  G4bool SetNewState(G4ApplicationState requestedState, const char* msg);
    // Set Geant4 to a new state.
    // In case the request is irregal, false will be returned
    // and the state of Geant4 will not be changed.
    // "msg" is information associating to this state change
  G4bool RegisterDependent(G4VStateDependent* aDependent,G4bool bottom=false);
    // Register a concrete class of G4VStateDependent.
    // Registered concrete classes will be notified via
    // G4VStateDependent::Notify() method when the state of Geant4 changes.
    // False will be returned if registration fails.
  G4bool DeregisterDependent(G4VStateDependent* aDependent);
    // Remove the registration.
    // False will be returned if aDependent has not been registered.
  G4VStateDependent* RemoveDependent(const G4VStateDependent* aDependent);
    // Remove the registration.
    // Removed pointer is returned.
  G4String GetStateString(G4ApplicationState aState) const;
    // Utility method which returns a string of the state name.

public:

  inline void SetSuppressAbortion(G4int i);
  inline G4int GetSuppressAbortion() const;
  inline const char* GetMessage() const;
  inline void SetExceptionHandler(G4VExceptionHandler* eh);
  inline G4VExceptionHandler* GetExceptionHandler() const;
  static void SetVerboseLevel(G4int val);

  //void Pause();
  //void Pause(const char* msg);
  //void Pause(G4String msg);

private:

  G4StateManager(const G4StateManager &right);
  G4StateManager& operator=(const G4StateManager &right);
  G4int operator==(const G4StateManager &right) const;
  G4int operator!=(const G4StateManager &right) const;

private:

  static G4ThreadLocal G4StateManager* theStateManager;
  G4ApplicationState theCurrentState;
  G4ApplicationState thePreviousState;
  std::vector<G4VStateDependent*> theDependentsList;
  G4VStateDependent* theBottomDependent;
  G4int suppressAbortion;
  const char* msgptr;
  G4VExceptionHandler* exceptionHandler;
  static G4int verboseLevel;
};

#include "G4StateManager.icc"

#endif