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 #ifndef _StdLPersistent_TreeNode_HeaderFile
0015 #define _StdLPersistent_TreeNode_HeaderFile
0016
0017 #include <StdObjMgt_Attribute.hxx>
0018
0019 #include <TDataStd_TreeNode.hxx>
0020 #include <Standard_GUID.hxx>
0021
0022 class StdLPersistent_TreeNode : public StdObjMgt_Attribute<TDataStd_TreeNode>::Static
0023 {
0024 public:
0025   //! Read persistent data from a file.
0026   Standard_EXPORT void Read(StdObjMgt_ReadData& theReadData) override;
0027
0028   //! Write persistent data to a file.
0029   Standard_EXPORT void Write(StdObjMgt_WriteData& theWriteData) const override;
0030
0031   //! Gets persistent child objects
0032   Standard_EXPORT void PChildren(StdObjMgt_Persistent::SequenceOfPersistent&) const override;
0033
0034   //! Returns persistent type name
0035   const char* PName() const override { return "PDataStd_TreeNode"; }
0036
0037   //! Create an empty transient attribute
0038   Standard_EXPORT occ::handle<TDF_Attribute> CreateAttribute() override;
0039
0040   //! Import transient attribute from the persistent data.
0041   Standard_EXPORT void ImportAttribute() override;
0042
0043 private:
0044   struct dynamic : public Standard_Transient
0045   {
0046     occ::handle<StdLPersistent_TreeNode> First;
0047     Standard_GUID                        TreeID;
0048   };
0049
0050   Handle(dynamic)                      myDynamicData;
0051   occ::handle<StdLPersistent_TreeNode> myNext;
0052 };
0053
0054 #endif