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 // Created on: 1992-11-17
 // Created by: Christian CAILLET
 // Copyright (c) 1992-1999 Matra Datavision
 // 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.
 
 #ifndef _IFSelect_SelectExtract_HeaderFile
 #define _IFSelect_SelectExtract_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <IFSelect_SelectDeduct.hxx>
 #include <Standard_Integer.hxx>
 class Interface_EntityIterator;
 class Interface_Graph;
 class Standard_Transient;
 class Interface_InterfaceModel;
 class TCollection_AsciiString;
 
 //! A SelectExtract determines a list of Entities from an Input
 //! Selection, as a sub-list of the Input Result
 //! It works by applying a sort criterium on each Entity of the
 //! Input. This criterium can be applied Direct to Pick Items
 //! (default case) or Reverse to Remove Item
 //!
 //! Basic features (the unique Input) are inherited from SelectDeduct
 class IFSelect_SelectExtract : public IFSelect_SelectDeduct
 {
 
 public:
   //! Returns True if Sort criterium is Direct, False if Reverse
   Standard_EXPORT bool IsDirect() const;
 
   //! Sets Sort criterium sense to a new value
   //! (True : Direct , False : Reverse)
   Standard_EXPORT void SetDirect(const bool direct);
 
   //! Returns the list of selected entities. Works by calling the
   //! method Sort on each input Entity : the Entity is kept as
   //! output if Sort returns the same value as Direct status
   Standard_EXPORT Interface_EntityIterator RootResult(const Interface_Graph& G) const override;
 
   //! Returns True for an Entity if it satisfies the Sort criterium
   //! It receives :
   //! - <rank>, the rank of the Entity in the Iteration,
   //! - <ent> , the Entity itself, and
   //! - <model>, the Starting Model
   //! Hence, the Entity to check is "model->Value(num)" (but an
   //! InterfaceModel allows other checks)
   //! This method is specific to each class of SelectExtract
   Standard_EXPORT virtual bool Sort(const int                                    rank,
                                     const occ::handle<Standard_Transient>&       ent,
                                     const occ::handle<Interface_InterfaceModel>& model) const = 0;
 
   //! Works as Sort but works on the Graph
   //! Default directly calls Sort, but it can be redefined
   //! If SortInGraph is redefined, Sort should be defined even if
   //! not called (to avoid deferred methods in a final class)
   Standard_EXPORT virtual bool SortInGraph(const int                              rank,
                                            const occ::handle<Standard_Transient>& ent,
                                            const Interface_Graph&                 G) const;
 
   //! Returns a text saying "Picked" or "Removed", plus the
   //! specific criterium returned by ExtractLabel (see below)
   Standard_EXPORT TCollection_AsciiString Label() const override;
 
   //! Returns a text defining the criterium for extraction
   Standard_EXPORT virtual TCollection_AsciiString ExtractLabel() const = 0;
 
   DEFINE_STANDARD_RTTIEXT(IFSelect_SelectExtract, IFSelect_SelectDeduct)
 
 protected:
   //! Initializes a SelectExtract : enforces the sort to be Direct
   Standard_EXPORT IFSelect_SelectExtract();
 
 private:
   bool thesort;
 };
 
 #endif // _IFSelect_SelectExtract_HeaderFile

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