// -*- mode: c++ -*- 
//
// $Id: BrEvent.h,v 1.7 2001/12/13 12:30:26 ouerdane Exp $
//
///////////////////////////////////////////////////////////////////////
//                                                                   //
//    BrEvent                                                        //
//                                                                   //
//    Brahms event class                                             //
//                                                                   //
//    BrEvent manages access to the raw and reconstructed data       //
//    for one event in the BRAT environment.                         // 
//    environment                                                    //
//                                                                   //
//    Author  : Kris Hagel from a model by Gunther Roland            //
//    Created :                                                      //
//    Version : 1.0                                                  //
//    Changed : July 12 1997                                         //
//                                                                   //
//              Add BrEventHeader                                    //
//              Add HashTable for BrDataBuffers                      //
//              Modified all Object named Br...                      //
//                                                                   //
///////////////////////////////////////////////////////////////////////
#ifndef BRAT_BrEvent
#define BRAT_BrEvent
#include "TNamed.h"
#include "THashTable.h"
#include "TBrowser.h"
#include "BrEventHeader.h"
#include "BrEventNode.h"

class BrEvent : public BrEventNode 
{
public:
  BrEvent();
  BrEvent(Char_t* Name,  Int_t run, Int_t event);
  virtual ~BrEvent();


  virtual Int_t           GetRunNumber()   const;
  virtual Int_t           GetEventNumber() const;
  virtual Int_t           GetDate()        const;
  virtual Int_t           GetTriggerMask() const;
  virtual Int_t           GetTime()        const;
  virtual Int_t           GetEventType()   const;  
  virtual BrEventHeader*  GetEventHeader() const;
  virtual void            Print(Option_t* opt="") const; //*MENU*
  virtual void            Copy(BrEvent &event);
  virtual void            Browse(TBrowser* b); 

  virtual Bool_t          IsEventHeader();

private:
  void  CheckHeader() const;

  mutable BrEventHeader* fEventHeader;
  Int_t         fRunNumber;     //! non persistent!
  Int_t         fEventNumber;   //! non persistent!
public:
  
  ClassDef(BrEvent,1) // BRAHMS event data class    
};

//____________________________________________________________________
inline Int_t BrEvent::GetRunNumber()   const 
{
  CheckHeader();
  return fEventHeader->RunNumber(); 
}

//____________________________________________________________________
inline Int_t BrEvent::GetEventNumber() const 
{
  CheckHeader();
  return fEventHeader->EventNumber();
}

//____________________________________________________________________
inline Int_t BrEvent::GetDate()        const 
{
  CheckHeader();
  return fEventHeader->Date();      
}

//____________________________________________________________________
inline Int_t BrEvent::GetTriggerMask() const 
{
  CheckHeader();
  return fEventHeader->TriggerMask();
}

//____________________________________________________________________
inline Int_t BrEvent::GetTime()        const 
{
  CheckHeader();
  return fEventHeader->Time();      
}

//____________________________________________________________________
inline Int_t BrEvent::GetEventType()   const 
{
  CheckHeader();
  return fEventHeader->EventType(); 
}

//____________________________________________________________________
inline Bool_t BrEvent::IsEventHeader()
{
  if (fEventHeader)
    return kTRUE;
  
  return kFALSE;
}

//____________________________________________________________________
inline BrEventHeader*  BrEvent::GetEventHeader() const 
{ 
  CheckHeader();
  return fEventHeader;
}

#endif

// $Log: BrEvent.h,v $
// Revision 1.7  2001/12/13 12:30:26  ouerdane
// added method Bool_t IsEventHeader() to check if it really exists
//
// Revision 1.6  2001/08/21 16:41:58  cholm
// Minor fixes.
//
// Revision 1.5  2001/08/21 16:11:34  cholm
// Added methos CheckHeade for on-demand creation. Also moved inline
// methods out of class declaration body and into the end of the file
//
// Revision 1.4  2001/08/08 21:52:08  hagel
// Eliminate memory leak by creating on demand fObjectList and fEventHeader
//
// Revision 1.3  2001/06/25 14:24:02  cholm
// packages/
//
// Revision 1.2  2001/06/25 07:38:18  cholm
// Removed Eun-Joo's previous erroneous change
//
// Revision 1.1.1.1  2001/06/21 14:54:58  hagel
// Initial revision of brat2
//
// Revision 1.12  2001/06/01 15:46:19  cholm
// Fixed creation id class to be more clean.  Now sets the user name
// (if avaliable) has a Print method.
// PRint method in BrDataObject.
// Print method in BrDataTable
// Print method in BrEvent
// Print method in BrEventNode
//
// Revision 1.11  2000/10/17 20:51:42  videbaek
// Moved CVS log comments
//
// Revision 1.10  2000/10/03 19:29:44  cholm
// Made IsFolder() const (since it is in TObject) which was needed for the
// objects to be browsable. Aslo, as of ROOT version 2.25.02 there's a list
// of special objects, which BrEventIO now is added to. Some doc to
// BrEventNode::Clear() added! Added method BrEventNode::SetOwner().
// 						Christian Holm
//
// Revision 1.9  2000/06/15 14:16:46  alv
// Made more of the Get-methods const member functions
//
// Revision 1.8  2000/04/13 00:01:58  cholm
// Added methods for browsing BrEvents, either directly or via
// a BrEventIO. Also added method GetROOTFile to BrEventIO.
//
// Revision 1.7  1999/06/15 23:55:02  hagel
// Added fEventType in BrEventHeader since it is in raw data
//
// Revision 1.6  1999/01/21 23:23:19  hagel
// 1. Changed convention for checking includes.  Current convention is:
//    BRAT_Br...... eg BRAT_BrModule ala ROOT.
// 2. Added CVS logs to .h files that didn't have them.
// 3. Moved checking of include definition to first line for easier reading
// 4. Put checks before all includes in the include files as per BRAT specifications
// 5. Added BrGeantHeader to Geant Makefile
// 6. All changes have been checked to compile on NT ala Cygnus
//
// Revision 1.5  1998/08/20 14:29:44  hagel
// Add Copy method
//
// Revision 1.4  1998/08/14 21:26:23  videbaek
// Some cleanup mods
//
// Revision 1.3  1998/04/06 21:11:47  videbaek
// Clean up and additions for Win95
//
//