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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.
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
// Created on: 2016-10-19
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// Created by: Irina KRYLOVA
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// Copyright (c) 2016 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 _XCAFDoc_View_HeaderFile
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#define _XCAFDoc_View_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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class Standard_GUID;
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class TDF_Label;
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class TDF_Attribute;
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class TDF_RelocationTable;
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class XCAFView_Object;
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// resolve name collisions with WinAPI headers
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#ifdef GetObject
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#undef GetObject
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#endif
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class XCAFDoc_View;
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DEFINE_STANDARD_HANDLE(XCAFDoc_View, TDataStd_GenericEmpty)
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//! Attribute to store view
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class XCAFDoc_View : public TDataStd_GenericEmpty
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{
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public:
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Standard_EXPORT XCAFDoc_View();
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Standard_EXPORT static const Standard_GUID& GetID();
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Standard_EXPORT static Handle(XCAFDoc_View) Set (const TDF_Label& theLabel);
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Standard_EXPORT const Standard_GUID& ID() const Standard_OVERRIDE;
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//! Updates parent's label and its sub-labels with data taken from theViewObject.
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//! Old data associated with the label will be lost.
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Standard_EXPORT void SetObject(const Handle(XCAFView_Object)& theViewObject);
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//! Returns view object data taken from the paren's label and its sub-labels.
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Standard_EXPORT Handle(XCAFView_Object) GetObject() const;
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DEFINE_DERIVED_ATTRIBUTE(XCAFDoc_View, TDataStd_GenericEmpty)
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};
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#endif
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