#ifndef TEmptyBeamSpillControlSample_h
#define TEmptyBeamSpillControlSample_h

#include "TH1F.h"
#include <IControlSampleBase.hxx>
#include <IRawBeamDataSingleton.hxx>

// Class to select events based on FGD tracks.  Selection criteria is
// that there must be one (and only one) iso-recon reconstructed track 
// in each FGD (using all FGD hits).
class IEmptyBeamSpillControlSample : public IControlSampleBase {
 public:
  IEmptyBeamSpillControlSample();
  ~IEmptyBeamSpillControlSample(){}

  void   SetPOTMax(double d) { fPOTMax = d;    }
  double GetPOTMax()         { return fPOTMax; }

private:
  
  bool IsEventSelectedInternal(COMET::ICOMETEvent& event) ;

  void InitHistograms();

  // maximum number of POT to count as "empty" beam spill
  Double_t fPOTMax;

  // histogram for POT/spill
  TH1F* hpot;
  
};
#endif