#ifndef ALIDIELECTRONHF_H
#define ALIDIELECTRONHF_H

/* Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

//#############################################################
//#                                                           # 
//#         Class AliDielectronHF                     #
//#                                                           #
//#  Authors:                                                 #
//#   Julian Book, Uni-Frankfurt / Julian.Book@cern.ch        #
//#                                                           #
//#############################################################

#include <TNamed.h>
#include <TObjArray.h>
#include <TBits.h>
#include <THnBase.h>

#include "AliDielectronVarManager.h"
#include "AliDielectronHistos.h"

class AliDielectronHF : public TNamed {
public:
  enum { kMaxCuts=20 };
  enum EBinType {
    kStdBin=0,
    kBinToMax,
    kBinFromMin,
    kSymBin
  };
  enum EPairType {
    //    kOSonly=0,  kOSandLS, kOSandROT, kOSandMIX, kAll, kMConly
    kAll=0, kMConly,
    kSeAll,   kSeOnlyOS,
    kMeAll,   kMeOnlyOS,
    kSeMeAll, kSeMeOnlyOS,
    kSeReAll, kSeReOnlyOS,
  };

  AliDielectronHF();
  AliDielectronHF(const char*name, const char* title);

  virtual ~AliDielectronHF();

  void Init();
  void SetSignalsMC(TObjArray* array)    {fSignalsMC = array;}
  void SetStepForMCGenerated(Bool_t switcher=kTRUE)    {fStepGenerated = switcher;}
  void SetPairTypes(EPairType ptype) { fPairType=ptype; }
  void SetEventArray(Bool_t switcher=kTRUE) {fEventArray=switcher;}

  // functions to add 1-dimensional objects
  void UserProfile(const char* histClass, UInt_t valTypeP,
		   const TVectorD * const binsX, UInt_t valTypeX, TString option="",
		   UInt_t valTypeW=AliDielectronHistos::kNoWeights);
  void UserHistogram(const char* histClass,
		     const TVectorD * const binsX, UInt_t valTypeX, UInt_t valTypeW=AliDielectronHistos::kNoWeights)
  { UserProfile(histClass,AliDielectronHistos::kNoProfile,binsX,valTypeX,"",valTypeW); }

  // functions to add 2-dimensional objects
  void UserProfile(const char* histClass, UInt_t valTypeP,
		   const TVectorD * const binsX, const TVectorD * const binsY,
		   UInt_t valTypeX, UInt_t valTypeY, TString option="", UInt_t valTypeW=AliDielectronHistos::kNoWeights);
  void UserHistogram(const char* histClass,
                     const TVectorD * const binsX, const TVectorD * const binsY,
		     UInt_t valTypeX, UInt_t valTypeY, UInt_t valTypeW=AliDielectronHistos::kNoWeights)
  { UserProfile(histClass,AliDielectronHistos::kNoProfile,binsX,binsY,valTypeX,valTypeY,"",valTypeW); }

  // functions to add 3-dimensional objects
  void UserProfile(const char* histClass, UInt_t valTypeP,
		   const TVectorD * const binsX, const TVectorD * const binsY, const TVectorD * const binsZ,
		   UInt_t valTypeX, UInt_t valTypeY, UInt_t valTypeZ, TString option="",
		   UInt_t valTypeW=AliDielectronHistos::kNoWeights);
  void UserHistogram(const char* histClass,
                     const TVectorD * const binsX, const TVectorD * const binsY, const TVectorD * const binsZ,
                     UInt_t valTypeX, UInt_t valTypeY, UInt_t valTypeZ, UInt_t valTypeW=AliDielectronHistos::kNoWeights)
  { UserProfile(histClass,AliDielectronHistos::kNoProfile,binsX,binsY,binsZ,valTypeX,valTypeY,valTypeZ,"",valTypeW); }

  // functions to add multidimensional stuff
  void UserSparse(const char* histClass,
		  Int_t ndim, TObjArray *limits, UInt_t *vars, UInt_t valTypeW=AliDielectronHistos::kNoWeights);


  // functions to define the grid
  void AddCutVariable(AliDielectronVarManager::ValueTypes type, Int_t nbins,
		      Double_t min, Double_t max, Bool_t log=kFALSE, Bool_t leg=kFALSE, EBinType btype=kStdBin);
  void AddCutVariable(AliDielectronVarManager::ValueTypes type, 
		      const char* binLimitStr, Bool_t leg=kFALSE, EBinType btype=kStdBin);
  void AddCutVariable(AliDielectronVarManager::ValueTypes type, 
		      TVectorD * binLimits, Bool_t leg=kFALSE, EBinType btype=kStdBin);

  void Fill(Int_t pairIndex, const AliDielectronPair *particle);
  void Fill(Int_t label1, Int_t label2, Int_t nSignal);
  void Fill(Int_t Index, Double_t * const valuesPair, Double_t * const valuesLeg1, Double_t * const valuesLeg2);

  Bool_t IsPairTypeSelected(Int_t itype);

  Int_t GetNumberOfBins() const;
  const TObjArray * GetHistArray() const { return &fArrPairType; }
  Bool_t GetStepForMCGenerated()   const { return fStepGenerated; }
  Bool_t IsEventArray()           const { return fEventArray; }
  
  

private:
  TBits     *fUsedVars;             // list of used variables

  TObjArray fArrPairType;           //-> array of pair types
  EPairType fPairType;              // which pair combinations to include
  TObjArray* fSignalsMC;            //! array of MC signals to be studied

  UShort_t  fVarCuts[kMaxCuts];     // cut variables
  TBits     *fVarCutType;           // array to store leg booleans
  //  Bool_t    fVarCutType[kMaxCuts];  // array to store leg booleans
  TObjArray fAxes;                  // Axis descriptions of the cut binning
  UShort_t  fBinType[kMaxCuts];     // binning type of the axes
  
  Bool_t    fHasMC;                 // is mc array
  Bool_t    fStepGenerated;         // switcher for generated particles
  Bool_t    fEventArray;            // switch OFF pair types and ON event array
  TObjArray fRefObj;               // reference object

  AliDielectronHF(const AliDielectronHF &c);
  AliDielectronHF &operator=(const AliDielectronHF &c);

  
  ClassDef(AliDielectronHF,6)         // Dielectron HF
};



#endif