// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.


#include <IFGraph_ExternalSources.hxx>
#include <IFGraph_SCRoots.hxx>
#include <IFGraph_StrongComponants.hxx>
#include <Interface_Graph.hxx>
#include <Standard_Transient.hxx>

//#include <Interface_GraphContent.hxx>
IFGraph_SCRoots::IFGraph_SCRoots
  (const Interface_Graph& agraph, const Standard_Boolean whole)
      : IFGraph_StrongComponants (agraph,whole)    {  }

    IFGraph_SCRoots::IFGraph_SCRoots (IFGraph_StrongComponants& subparts)
      : IFGraph_StrongComponants (subparts)    {  }

// StrongComponants racines d un ensemble donne
// On ne tient pas compte du reste eventuel (c est un autre probleme)
// On part du fait que StrongComponants donne les Composants dans l ordre de
// dependance, le premier ne dependant de rien (les autres, on ne sait pas ...)

    void  IFGraph_SCRoots::Evaluate ()
{
  IFGraph_StrongComponants complist (Model(),Standard_False);
  complist.GetFromIter(Loaded());
//  Interface_Graph G(Model());
  Interface_Graph G(thegraph);
#ifdef OCCT_DEBUG
  cout<<" SCRoots:"<<endl;
#endif
  G.ResetStatus();
  for (complist.Start(); complist.More(); complist.Next()) {
    Handle(Standard_Transient) ent = complist.FirstEntity();
    Standard_Integer num = G.EntityNumber(ent);
#ifdef OCCT_DEBUG
    cout<<"   Iteration,num="<<num<<(G.IsPresent(num) ? " Pris" : " A prendre")<<endl;
#endif
    if (!G.IsPresent(num)) {        //  enregistrer pour suivants
      G.GetFromEntity(ent,Standard_True);
      Interface_EntityIterator list = complist.Entities();
      AddPart();
      GetFromIter(list);
    }
  }
}

/*     ce qui suit, c etait autre chose : les SC qui n ont pas d ExternalSource
    Interface_EntityIterator list = complist.Entities();
    IFGraph_ExternalSources  eval (Model());
    eval.GetFromIter(list);
    if (eval.IsEmpty()) {
      AddPart();
      GetFromIter(list);
    }
  }
}
*/