// Author: I. Froehlich
// Written: 26.7.2008
// Revised: 
// Util class for common distributions

#ifndef _PDISTRIBUTIONMANAGERUTIL_H_
#define _PDISTRIBUTIONMANAGERUTIL_H_


#include "TObjArray.h"
#include "TF1.h"
#include "TF2.h"
#include "PParticle.h"
#include "PDistribution.h"
#include "PDynamicData.h"
#include "PChannel.h"

#define MAX_DISTRIBUTION_LIST 1000
#define MAX_GROUP_LIST 100
#define MAX_CORR_LIST 10000

class PDistributionManagerUtil;

PDistributionManagerUtil &fDistributionManagerUtil();
PDistributionManagerUtil *makeDistributionManagerUtil();

class PDistributionManagerUtil : public TObject {
  
 public:

    PDistributionManagerUtil();
    int  Add(PDistribution *dist); //Adds user-defined distribution
    int  Add(PDistribution *dist, const Char_t *gr); //Adds user-defined distribution
    int  Add(TObjArray *arr);      //Adds a bulk of user-defined distribution
    void AlternativeTo(const char *a, const char *b);

    void Print(const Option_t* delme="root") const;
    Int_t PrintGroup(Int_t group_id, Int_t width, Int_t indent,
		     const Char_t *name,
		     Int_t *num_enabled_mods, Int_t *num_total_mods,
		     Int_t *num_subs, Int_t *will_print) const;

    int  Attach(PChannel *ch);     //Attach the PChannel to the known distributions

    Bool_t Disable(const Char_t *id);     //Disable id, if possible
    Bool_t Enable(const Char_t *id);     //Enable id, if possible

    PDistribution *GetDistribution(const Char_t *id);
    void SetVerbose(Int_t v) {
	verbosity=v;
    };
    void LinkDB(void);             // Link the channel models to data base

    void ExpandGroup(const char *, Int_t ex=1);


    Int_t   AddGroup(const Char_t *id, const Char_t *de);
    void    SetGroup(const Char_t *id);  //set standard group for the next Add(PDistribution * dist)
    Int_t   AddSubGroup(const Char_t *id, const Char_t *de, const Char_t *sub);

    Bool_t no_warning;

 private:
  
    Int_t position;
    PDistribution *distribution[MAX_DISTRIBUTION_LIST];
    int alt_distribution[MAX_DISTRIBUTION_LIST];

  
    Int_t group_position;
    const Char_t *group_identifier[MAX_GROUP_LIST], *group_description[MAX_GROUP_LIST];
    Int_t group_expanded[MAX_GROUP_LIST];
    Int_t group_corr[MAX_GROUP_LIST];
  
    Int_t GetGroup(const Char_t *id, Int_t warning=1);  //get the group number from string
    //return a "none" (=0) when id not found
    Int_t current_group;
    Int_t AddCorrelation(Int_t gr, Int_t dis);  //correlates a certain group and distribution
    Int_t corr_position;
    Int_t corr_gr[MAX_CORR_LIST], corr_dis[MAX_CORR_LIST];
    void DisableAlts(int id);
    Int_t verbosity;
    Int_t linkdb_done; //flag for linkdb freeze out BUGBUG: Needs to be checked in Add()

    ClassDef(PDistributionManagerUtil,0)  //Util class for the distribution manager
	
};

#endif