/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

//-----------------------------------------------------------------------
// Author : R. Vernet, Consorzio Cometa - Catania (it)
//-----------------------------------------------------------------------

#ifndef ALICFSINGLETRACKTASK_H
#define ALICFSINGLETRACKTASK_H

#include "AliAnalysisTask.h"

class TH1I;
class TParticle ;
class TFile ;
class AliMCEventHandler;
class AliESDEvent;
class AliStack ;
class AliCFManager;
class TChain;
class AliESDtrack;

class AliCFSingleTrackTask : public AliAnalysisTask {
  public:

  enum {
    kStepGenerated       = 0,
    kStepReconstructible = 1,
    kStepReconstructed   = 2,
    kStepSelected        = 3
  };

  AliCFSingleTrackTask();
  AliCFSingleTrackTask(const Char_t* name);
  AliCFSingleTrackTask& operator= (const AliCFSingleTrackTask& c);
  AliCFSingleTrackTask(const AliCFSingleTrackTask& c);
  virtual ~AliCFSingleTrackTask();

  // ANALYSIS FRAMEWORK STUFF to loop on data and fill output objects
  void     ConnectInputData(Option_t *option="");
  void     CreateOutputObjects();
  void     Exec(Option_t *option);
  void     Init(); //loads the CF manager
  void     LocalInit() {Init();} //needed for the slaves 
  void     Terminate(Option_t *);
  
  // CORRECTION FRAMEWORK RELATED FUNCTIONS
  void           SetCFManager(AliCFManager* io) {fCFManager = io;}   // global correction manager
  AliCFManager * GetCFManager()                 {return fCFManager;} // get corr manager
 protected:

  TChain         *fChain      ;  //! chained files
  AliESDEvent    *fESD        ;  //! pointer to the ESD event read
  AliCFManager   *fCFManager  ;  // pointer to the CF manager
  TList          *fQAHistList ;  // list of QA histograms

  // Histograms
  //Number of events
  TH1I *fHistEventsProcessed; //! simple histo for monitoring the number of events processed
  
  ClassDef(AliCFSingleTrackTask,1);
};

#endif