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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_SelectCombine_HeaderFile
 #define _IFSelect_SelectCombine_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <IFSelect_TSeqOfSelection.hxx>
 #include <IFSelect_Selection.hxx>
 #include <Standard_Integer.hxx>
 class IFSelect_SelectionIterator;
 
 
 class IFSelect_SelectCombine;
 DEFINE_STANDARD_HANDLE(IFSelect_SelectCombine, IFSelect_Selection)
 
 //! A SelectCombine type Selection defines algebraic operations
 //! between results of several Selections
 //! It is a deferred class : sub-classes will have to define
 //! precise what operator is to be applied
 class IFSelect_SelectCombine : public IFSelect_Selection
 {
 
 public:
 
   
   //! Returns the count of Input Selections
   Standard_EXPORT Standard_Integer NbInputs() const;
   
   //! Returns an Input Selection, given its rank in the list
   Standard_EXPORT Handle(IFSelect_Selection) Input (const Standard_Integer num) const;
   
   //! Returns the rank of an input Selection, 0 if not in the list.
   //! Most generally, its value is meaningless, except for testing
   //! the presence of an input Selection :
   //! - == 0  if <sel> is not an input for <me>
   //! - >  0  if <sel> is an input for <me>
   Standard_EXPORT Standard_Integer InputRank (const Handle(IFSelect_Selection)& sel) const;
   
   //! Adds a Selection to the filling list
   //! By default, adds it to the end of the list
   //! A Positive rank less then NbInputs gives an insertion rank
   //! (InsertBefore : the new <atnum>th item of the list is <sel>)
   Standard_EXPORT void Add (const Handle(IFSelect_Selection)& sel, const Standard_Integer atnum = 0);
   
   //! Removes an input Selection.
   //! Returns True if Done, False, if <sel> is not an input for <me>
   Standard_EXPORT Standard_Boolean Remove (const Handle(IFSelect_Selection)& sel);
   
   //! Removes an input Selection, given its rank in the list
   //! Returns True if Done, False if <num> is out of range
   Standard_EXPORT Standard_Boolean Remove (const Standard_Integer num);
   
   //! Puts in an Iterator the Selections from which "me" depends
   //! That is to say, the list of Input Selections
   Standard_EXPORT void FillIterator (IFSelect_SelectionIterator& iter) const Standard_OVERRIDE;
 
 
 
 
   DEFINE_STANDARD_RTTIEXT(IFSelect_SelectCombine,IFSelect_Selection)
 
 protected:
 
   
   //! Defines an empty SelectCombine
   Standard_EXPORT IFSelect_SelectCombine();
   
   //! Returns always True, because RootResult gives a Unique list
   Standard_EXPORT virtual Standard_Boolean HasUniqueResult() const Standard_OVERRIDE;
 
 
 
 private:
 
 
   IFSelect_TSeqOfSelection thelist;
 
 
 };
 
 
 
 
 
 
 
 #endif // _IFSelect_SelectCombine_HeaderFile

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