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 // Created on: 1995-11-08
 // Created by: Christian CAILLET
 // Copyright (c) 1995-1999 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 _Interface_Category_HeaderFile
 #define _Interface_Category_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 #include <Standard_Integer.hxx>
 #include <NCollection_Array1.hxx>
 #include <NCollection_HArray1.hxx>
 
 #include <Interface_GTool.hxx>
 class Interface_Protocol;
 class Standard_Transient;
 class Interface_ShareTool;
 class Interface_InterfaceModel;
 
 //! This class manages categories
 //! A category is defined by a name and a number, and can be
 //! seen as a way of rough classification, i.e. less precise than
 //! a cdl type.
 //! Hence, it is possible to dispatch every entity in about
 //! a dozen of categories, twenty is a reasonable maximum.
 //!
 //! Basically, the system provides the following categories :
 //! Shape (Geometry, BRep, CSG, Features, etc...)
 //! Drawing (Drawing, Views, Annotations, Pictures, Sketches ...)
 //! Structure (Component & Part, Groups & Patterns ...)
 //! Description (Meta-Data : Relations, Properties, Product ...)
 //! Auxiliary (those which do not enter in the above list)
 //! and some dedicated categories
 //! FEA, Kinematics, Piping, etc...
 //! plus Professional for other dedicated non-classed categories
 //!
 //! In addition, this class provides a way to compute then quickly
 //! query category numbers for an entire model.
 //! Values are just recorded as a list of numbers, control must
 //! then be done in a wider context (which must provide a Graph)
 class Interface_Category
 {
 public:
   DEFINE_STANDARD_ALLOC
 
   //! Creates a Category, with no protocol yet
   Interface_Category()
       : myGTool(new Interface_GTool)
   {
     Init();
   }
 
   //! Creates a Category with a given protocol
   Interface_Category(const occ::handle<Interface_Protocol>& theProtocol)
       : myGTool(new Interface_GTool(theProtocol))
   {
     Init();
   }
 
   //! Creates a Category with a given GTool
   Interface_Category(const occ::handle<Interface_GTool>& theGTool)
       : myGTool(theGTool)
   {
     Init();
   }
 
   //! Sets/Changes Protocol
   void SetProtocol(const occ::handle<Interface_Protocol>& theProtocol)
   {
     myGTool->SetProtocol(theProtocol);
   }
 
   //! Determines the Category Number for an entity in its context,
   //! by using general service CategoryNumber
   Standard_EXPORT int CatNum(const occ::handle<Standard_Transient>& theEnt,
                              const Interface_ShareTool&             theShares);
 
   //! Clears the recorded list of category numbers for a Model
   void ClearNums() { myNum.Nullify(); }
 
   //! Computes the Category Number for each entity and records it,
   //! in an array (ent.number -> category number)
   //! Hence, it can be queried by the method Num.
   //! The Model itself is not recorded, this method is intended to
   //! be used in a wider context (which detains also a Graph, etc)
   Standard_EXPORT void Compute(const occ::handle<Interface_InterfaceModel>& theModel,
                                const Interface_ShareTool&                   theShares);
 
   //! Returns the category number recorded for an entity number
   //! Returns 0 if out of range
   Standard_EXPORT int Num(const int theNumEnt) const;
 
   //! Records a new Category defined by its names, produces a number
   //! New if not yet recorded
   Standard_EXPORT static int AddCategory(const char* const theName);
 
   //! Returns the count of recorded categories
   Standard_EXPORT static int NbCategories();
 
   //! Returns the name of a category, according to its number
   Standard_EXPORT static const char* Name(const int theNum);
 
   //! Returns the number of a category, according to its name
   Standard_EXPORT static int Number(const char* const theName);
 
   //! Default initialisation
   //! (protected against several calls : passes only once)
   Standard_EXPORT static void Init();
 
 private:
   occ::handle<Interface_GTool>          myGTool;
   occ::handle<NCollection_HArray1<int>> myNum;
 };
 
 #endif // _Interface_Category_HeaderFile

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