include/opencascade/StdLPersistent_TreeNode.hxx

0001 // Copyright (c) 2015 OPEN CASCADE SAS
0002 //
0003 // This file is part of Open CASCADE Technology software library.
0004 //
0005 // This library is free software; you can redistribute it and/or modify it under
0006 // the terms of the GNU Lesser General Public License version 2.1 as published
0007 // by the Free Software Foundation, with special exception defined in the file
0008 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0009 // distribution for complete text of the license and disclaimer of any warranty.
0010 //
0011 // Alternatively, this file may be used under the terms of Open CASCADE
0012 // commercial license or contractual agreement.
0013
0014
0015 #ifndef _StdLPersistent_TreeNode_HeaderFile
0016 #define _StdLPersistent_TreeNode_HeaderFile
0017
0018 #include <StdObjMgt_Attribute.hxx>
0019
0020 #include <TDataStd_TreeNode.hxx>
0021 #include <Standard_GUID.hxx>
0022
0023
0024 class StdLPersistent_TreeNode
0025   : public StdObjMgt_Attribute<TDataStd_TreeNode>::Static
0026 {
0027 public:
0028   //! Read persistent data from a file.
0029   Standard_EXPORT virtual void Read (StdObjMgt_ReadData& theReadData);
0030
0031   //! Write persistent data to a file.
0032   Standard_EXPORT virtual void Write (StdObjMgt_WriteData& theWriteData) const;
0033
0034   //! Gets persistent child objects
0035   Standard_EXPORT virtual void PChildren(StdObjMgt_Persistent::SequenceOfPersistent&) const;
0036
0037   //! Returns persistent type name
0038   virtual Standard_CString PName() const
0039     { return "PDataStd_TreeNode"; }
0040
0041   //! Create an empty transient attribute
0042   Standard_EXPORT virtual Handle(TDF_Attribute) CreateAttribute();
0043
0044   //! Import transient attribute from the persistent data.
0045   Standard_EXPORT virtual void ImportAttribute();
0046
0047 private:
0048   struct dynamic : public Standard_Transient
0049   {
0050     Handle(StdLPersistent_TreeNode) First;
0051     Standard_GUID                   TreeID;
0052   };
0053
0054   Handle(dynamic) myDynamicData;
0055   Handle(StdLPersistent_TreeNode) myNext;
0056 };
0057
0058 #endif