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c99ad5d760
Added possibility to inherit existing attributes if the same persistent fields are used. All methods that allow controlling the data model changes or getting some callbacks may be overridden in successor. They may have same GUIDs as a base class or new ones. Special macros IMPLEMENT_DERIVED_ATTRIBUTE and IMPLEMENT_DERIVED_ATTRIBUTE_WITH_TYPE must be used instead of standard Handle macro definition IMPLEMENT_STANDARD_RTTIEXT to register new derived attributes. Using this improvement several existing attributes from TDataStd, TDataXtd and XCAFDoc packages become inherited from other base attribute-classes. XML and Bin drivers of these attributes are removed. New base attribute classes are added: TDataStd_GenericEmpty and TDataStd_GenericExtString. This improvement does not change both present formats Bin and XML documents. The obsolete Standard scheme is not changed at all.
100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
// Created on: 1997-07-29
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// Created by: Denis PASCAL
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// Copyright (c) 1997-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _TDataStd_NoteBook_HeaderFile
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#define _TDataStd_NoteBook_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <TDataStd_GenericEmpty.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Real.hxx>
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#include <Standard_Integer.hxx>
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#include <Standard_OStream.hxx>
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class TDF_Label;
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class Standard_GUID;
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class TDataStd_Real;
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class TDataStd_Integer;
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class TDF_Attribute;
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class TDF_RelocationTable;
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class TDataStd_NoteBook;
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DEFINE_STANDARD_HANDLE(TDataStd_NoteBook, TDataStd_GenericEmpty)
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//! NoteBook Object attribute
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class TDataStd_NoteBook : public TDataStd_GenericEmpty
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{
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public:
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//! class methods
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//! =============
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//! try to retrieve a NoteBook attribute at <current> label
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//! or in fathers label of <current>. Returns True if
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//! found and set <N>.
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Standard_EXPORT static Standard_Boolean Find (const TDF_Label& current, Handle(TDataStd_NoteBook)& N);
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//! Create an enpty NoteBook attribute, located at
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//! <label>. Raises if <label> has attribute
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Standard_EXPORT static Handle(TDataStd_NoteBook) New (const TDF_Label& label);
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//! NoteBook methods
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//! ===============
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Standard_EXPORT static const Standard_GUID& GetID();
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Standard_EXPORT TDataStd_NoteBook();
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//! Tool to Create an Integer attribute from <value>,
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//! Insert it in a new son label of <me>. The Real
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//! attribute is returned.
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Standard_EXPORT Handle(TDataStd_Real) Append (const Standard_Real value, const Standard_Boolean isExported = Standard_False);
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//! Tool to Create an Real attribute from <value>, Insert
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//! it in a new son label of <me>. The Integer attribute
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//! is returned.
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Standard_EXPORT Handle(TDataStd_Integer) Append (const Standard_Integer value, const Standard_Boolean isExported = Standard_False);
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Standard_EXPORT const Standard_GUID& ID() const Standard_OVERRIDE;
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Standard_EXPORT virtual Standard_OStream& Dump (Standard_OStream& anOS) const Standard_OVERRIDE;
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DEFINE_DERIVED_ATTRIBUTE(TDataStd_NoteBook, TDataStd_GenericEmpty)
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protected:
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private:
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};
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#endif // _TDataStd_NoteBook_HeaderFile
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