//--------------------------------------------------------------------------
// File and Version Information:
//	NTrkExample.hh	March 16 1999
//
// Description:
//	Class NTrkExample 
//	This is an analysis module class used as the
//      first example in the offline workbook. 
//      The workbook can be found on the web at the
//	following URL:
//	BFROOT/www/doc/workbook/workbook.html
//
//      The NTrkExample class only plots a histogram of
//	the number of tracks per event.
//
// Environment:
//	Software developed for the BaBar Detector at the SLAC B-Factory
//
// Author List:
//      Charles Young                   Original Author
//      Tracey Marsh                    minimize module
//
// Copyright Information:
//	Copyright (C) 1997		
//
//------------------------------------------------------------------------

#ifndef NTRKEXAMPLE_HH
#define NTRKEXAMPLE_HH


//-------------------------------
// Collaborating Class Headers --
//-------------------------------
//#include "Framework/APPModule.hh"
//#include "Framework/AbsParmIfdStrKey.hh"
#include "AbsParm/AbsParmIfdStrKey.hh"
#include "PAFAdapters/PAFBbrModule.hh"
#include "PAFAdapters/BbrSyntax.hh"

//------------------------------------
// Collaborating Class Declarations --
//------------------------------------

class HepHistogram;

//---------------------
//-- Class Interface --
//---------------------
 
class NTrkExample : public AppModule {

//--------------------
// Instance Members --
//--------------------

public:

  // Constructors
  NTrkExample( const char* const theName, const char* const theDescription );

  // Destructor
  virtual ~NTrkExample( );

  // Operations

  virtual APPMODULERETURNTYPE2   beginJob( AbsEvent* anEvent );
  virtual APPMODULERETURNTYPE1    event( AbsEvent* anEvent );
  virtual APPMODULERETURNTYPE2  endJob  ( AbsEvent* anEvent );
    
protected:
  


private:

  AbsParmIfdStrKey       _btaChargedList;//! Do not stream
  HepHistogram* _numTrkHisto;//! Do not stream

public:
  ClassDef(NTrkExample,1) //Simple Beta example
};

#endif