//
// *** Class AliRsnVATProcessInfo ***
//
// Virtual class which makes computations at the event level,
// in order to return a list of histograms useful to have a look
// of the characteristics of used events.
// If can be inherited and customized for the needs of the analysis.
//
// authors: A. Pulvirenti (email: alberto.pulvirenti@ct.infn.it)
//          M. Vala (email: martin.vala@cern.ch)
//

#ifndef ALIRSNVATPROCESSINFO_H
#define ALIRSNVATPROCESSINFO_H

#include <TNamed.h>
#include <TClonesArray.h>

class TH1I;
class AliRsnFunction;
class AliRsnEvent;

class AliRsnVATProcessInfo : public TNamed {
public:
   AliRsnVATProcessInfo(const char *name = "RSNInfo");
   AliRsnVATProcessInfo(const AliRsnVATProcessInfo& copy);
   AliRsnVATProcessInfo& operator= (const AliRsnVATProcessInfo& copy);
   ~AliRsnVATProcessInfo();

   void          GenerateInfoList(TList* list);
   virtual void  FillInfo();
   virtual void  PrintInfo(const Long64_t &num);

   const char*   GetEventHistogramName() { return Form("hEventsUsed_%s", GetName()); };
   Long64_t      GetNumerOfEventsProcessed();
   void          SetEventUsed(Int_t flag) { fEventUsed = flag; }
   Int_t         IsEventUsed() const { return fEventUsed; };
   void          AddEventFunction(AliRsnFunction *fcn);

   void          SetPrintInfoNumber(const Long64_t &num = 1) { fPrintInfoNumber = num; }

private:

   TH1I         *fHistUsedEvents;      // hist of used events
   Int_t         fEventUsed;           // number of used events
   TClonesArray  fEventFunctions;      // collection of functions computed on event

   Long64_t      fPrintInfoNumber;     // print info number

   ClassDef(AliRsnVATProcessInfo, 1)
};

#endif