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// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:    G4CrossSectionDataSetRegistry
//
// Author  V.Ivanchenko  24.01.2009
//
// Modifications:
//
 
//
// Class Description
// This is a singleton keeping pointers to all cross section data sets
// Class Description - End

#ifndef G4CrossSectionDataSetRegistry_h
#define G4CrossSectionDataSetRegistry_h 1

#include <vector>
#include <map>
#include "globals.hh"
#include "G4ThreadLocalSingleton.hh"

class G4VCrossSectionDataSet;
class G4VComponentCrossSection;

class G4CrossSectionDataSetRegistry
{
friend class G4ThreadLocalSingleton<G4CrossSectionDataSetRegistry>;

public:

  static G4CrossSectionDataSetRegistry* Instance();
  // access 
  
  ~G4CrossSectionDataSetRegistry();
  
  void Register(G4VCrossSectionDataSet*);
  //register new cross section

  void DeRegister(G4VCrossSectionDataSet*);
  //deregister cross section

  void Register(G4VComponentCrossSection*);
  //register new cross section component

  void DeRegister(G4VComponentCrossSection*);
  //deregister cross section component

  void DeleteComponent(G4VComponentCrossSection*);
  //deregister and delete cross section component

  void Clean();
  //clean the store
      
  G4VCrossSectionDataSet* GetCrossSectionDataSet(const G4String& name, G4bool warning=false);

  G4VComponentCrossSection* GetComponentCrossSection(const G4String& name);

  G4CrossSectionDataSetRegistry(G4CrossSectionDataSetRegistry&) = delete;
  G4CrossSectionDataSetRegistry& operator=
  (const G4CrossSectionDataSetRegistry &right) = delete;

private:

  G4CrossSectionDataSetRegistry();

  static G4ThreadLocal G4CrossSectionDataSetRegistry* instance;
  
  std::vector <G4VCrossSectionDataSet*> xSections;
  std::vector <G4VComponentCrossSection*> xComponents;
};

#endif