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// File: TObj_TObject.hxx
// Created: Tue Nov 23 12:51:43 2004
// Author: Pavel TELKOV
// Copyright: Open CASCADE 2007
// The original implementation Copyright: (C) RINA S.p.A
#ifndef TObj_TObject_HeaderFile
#define TObj_TObject_HeaderFile
#include <TObj_Common.hxx>
#include <TObj_Object.hxx>
#include <TDF_Attribute.hxx>
class Handle(TObj_TObject);
class Standard_GUID;
class TDF_Label;
class Handle(TDF_RelocationTable);
/**
* Purpose: OCAF Attribute to storing objects (interfaces) of OCAF-based
* modelers in the OCAF tree.
* The persistency mechanism of the TObj_TObject allowes to save
* and restore objects of various subtypes without recompilation of the schema
*/
class TObj_TObject : public TDF_Attribute
{
public:
//! Standard methods of OCAF attribute
//! Empty constructor
Standard_EXPORT TObj_TObject();
//! This method is used in implementation of ID()
static Standard_EXPORT const Standard_GUID& GetID();
//! Returns the ID of TObj_TObject attribute.
Standard_EXPORT const Standard_GUID& ID() const;
public:
//! Method for create TObj_TObject object
//! Creates TObj_TObject attribute on given label
static Standard_EXPORT Handle(TObj_TObject) Set(const TDF_Label& theLabel,
const Handle(TObj_Object)& theElem);
public:
//! Methods for setting and obtaining TObj_Object
//! Sets the TObj_Object object
Standard_EXPORT void Set(const Handle(TObj_Object)& theElem);
//! Returns the TObj_Object object
Standard_EXPORT Handle(TObj_Object) Get() const;
public:
//! Redefined OCAF abstract methods
//! Returns an new empty TObj_TObject attribute. It is used by the
//! copy algorithm.
Standard_EXPORT Handle(TDF_Attribute) NewEmpty() const;
//! Restores the backuped contents from <theWith> into this one. It is used
//! when aborting a transaction.
Standard_EXPORT void Restore(const Handle(TDF_Attribute)& theWith);
//! This method is used when copying an attribute from a source structure
//! into a target structure.
Standard_EXPORT void Paste(const Handle(TDF_Attribute)& theInto,
const Handle(TDF_RelocationTable)& theRT) const;
//! Tell TObj_Object to die,
//! i.e. (myElem->IsAlive() == false) after that
Standard_EXPORT void BeforeForget();
//! Tell TObj_Object to rise from the dead,
//! i.e. (myElem->IsAlive() == true) after that
Standard_EXPORT Standard_Boolean AfterUndo
(const Handle(TDF_AttributeDelta)& anAttDelta,
const Standard_Boolean forceIt);
private:
//! Fields
Handle(TObj_Object) myElem; //!< The object interface stored by the attribute
public:
//! CASCADE RTTI
DEFINE_STANDARD_RTTI(TObj_TObject)
};
//! Define handle class for TObj_TObject
DEFINE_STANDARD_HANDLE(TObj_TObject,TDF_Attribute)
#endif
#ifdef _MSC_VER
#pragma once
#endif
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