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// $Id: $
// GEANT4 tag $Name: not supported by cvs2svn $
//
// -------------------------------------------------------------------
// File name:     G4CrossSectionDataStore
//
// Modifications:
// 23.01.2009 V.Ivanchenko move constructor and destructor to source,
//                         use STL vector instead of C-array
//
// August 2011  Re-designed
//              by G. Folger, V. Ivantchenko, T. Koi and D.H. Wright

// Class Description
// This is the class to which cross section data sets may be registered. 
// An instance of it is contained in each hadronic process, allowing
// the use of the AddDataSet() method to tailor the cross sections to
// your application.
// Class Description - End

#ifndef G4CrossSectionDataStore_h
#define G4CrossSectionDataStore_h 1

#include "globals.hh"
#include "G4VCrossSectionDataSet.hh"
#include <vector>

class G4Nucleus;
class G4DynamicParticle;
class G4ParticleDefinition;
class G4Isotope;
class G4Element;
class G4Material;
class G4NistManager;

class G4CrossSectionDataStore
{
public:

  G4CrossSectionDataStore();

  ~G4CrossSectionDataStore();

  // Cross section per unit volume is computed (inverse mean free path)
  G4double GetCrossSection(const G4DynamicParticle*, const G4Material*);

  // Cross section per element is computed
  G4double GetCrossSection(const G4DynamicParticle*, 
			   const G4Element*, const G4Material*);

  // Cross section per isotope is computed
  G4double GetCrossSection(const G4DynamicParticle*, G4int Z, G4int A,
                           const G4Isotope*,
			   const G4Element*, const G4Material*);

  // Sample Z and A of a target nucleus and upload into G4Nucleus
  G4Element* SampleZandA(const G4DynamicParticle*, const G4Material*,
			 G4Nucleus& target);

  // Initialisation before run
  void BuildPhysicsTable(const G4ParticleDefinition&);

  // Dump store to G4cout
  void DumpPhysicsTable(const G4ParticleDefinition&);

  // Dump store as html
  void DumpHtml(const G4ParticleDefinition&, std::ofstream&);

  inline void AddDataSet(G4VCrossSectionDataSet*);

  inline void SetVerboseLevel(G4int value);

private:

  G4double GetIsoCrossSection(const G4DynamicParticle*, G4int Z, G4int A,
			      const G4Isotope*,
			      const G4Element*, const G4Material* aMaterial,
			      G4int index);

  G4CrossSectionDataStore & operator=(const G4CrossSectionDataStore &right);
  G4CrossSectionDataStore(const G4CrossSectionDataStore&);

  G4NistManager* nist;

  std::vector<G4VCrossSectionDataSet*> dataSetList;
  std::vector<G4double> xsecelm;
  std::vector<G4double> xseciso;

  const G4Material* currentMaterial;
  const G4ParticleDefinition* matParticle;
  G4double matKinEnergy;
  G4double matCrossSection;

  const G4Material* elmMaterial;
  const G4Element* currentElement;
  const G4ParticleDefinition* elmParticle;
  G4double elmKinEnergy;
  G4double elmCrossSection;

  G4int nDataSetList;
  G4int verboseLevel;
};

inline void G4CrossSectionDataStore::AddDataSet(G4VCrossSectionDataSet* p)
{
  dataSetList.push_back(p);
  ++nDataSetList;
}

inline void G4CrossSectionDataStore::SetVerboseLevel(G4int value)
{
  verboseLevel = value;
}

#endif