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// $Id: G4ShellData.hh,v 1.7 2008-03-17 13:45:25 pia Exp $
// GEANT4 tag $Name: not supported by cvs2svn $
//
// Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
//
// History:
// -----------
//  6 Aug 2001   MGP        Created
//
// -------------------------------------------------------------------

// Class description:
// Low Energy Electromagnetic Physics
// Shell data set: shell identifiers and binding energies

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

#ifndef G4SHELLDATA_HH
#define G4SHELLDATA_HH 1

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

class G4DataVector;

class G4ShellData 
{ 
public:

  G4ShellData(G4int minZ = 1, G4int maxZ = 100, G4bool isOccupancy = false);

  ~G4ShellData();
 
  size_t NumberOfShells(G4int Z) const;

  G4int ShellId(G4int Z, G4int shellIndex) const;

  G4double ShellOccupancyProbability(G4int Z, G4int shellIndex) const;

  const std::vector<G4double>& ShellIdVector(G4int Z) const;

  G4double BindingEnergy(G4int Z, G4int shellIndex) const;

  void SetOccupancyData() { occupancyData = true; }

  void LoadData(const G4String& fileName);

  void PrintData() const;

  // Randomly select a shell based on shell occupancy
  G4int SelectRandomShell(G4int Z) const;

private:

  // Hide copy constructor and assignment operator 
  G4ShellData& operator=(const G4ShellData& right);
  G4ShellData(const G4ShellData&);

  const std::vector<G4double>& ShellVector(G4int Z) const;

  G4int zMin;
  G4int zMax; 

  G4bool occupancyData;

  std::map<G4int,std::vector<G4double>*,std::less<G4int> > idMap;
  std::map<G4int,G4DataVector*,std::less<G4int> > bindingMap;
  std::vector<G4int> nShells;
  std::map<G4int,std::vector<G4double>*,std::less<G4int> > occupancyPdfMap;

};
 
#endif