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a9dde4a31b
Method DownCast() is made template, to be available only when argument is actually a pointer or handle to a base class. For compatibility with existing code, method DownCast() that can be used for the same type, derived, or unrelated class (i.e. where there is no actual down casting) is still available, its use shall cause "deprecated" compiler warning. OCCT code is updated to remove meaningless DownCast()s; a few places where DownCast() was used with argument of unrelated type are corrected. DRAW command QAHandleCast is removed (it was useful only during redesign of handles).
331 lines
9.7 KiB
C++
331 lines
9.7 KiB
C++
// Created on: 2004-11-23
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// Created by: Pavel TELKOV
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// Copyright (c) 2004-2014 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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// The original implementation Copyright: (C) RINA S.p.A
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#include <TObj_Object.hxx>
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#include <TObj_TReference.hxx>
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#include <TObj_TObject.hxx>
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#include <Standard_GUID.hxx>
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#include <TDF_RelocationTable.hxx>
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#include <TDF_DeltaOnAddition.hxx>
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#include <TDF_DeltaOnRemoval.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(TObj_TReference,TDF_Attribute)
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//=======================================================================
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//function : TObj_TReference
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//purpose :
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//=======================================================================
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TObj_TReference::TObj_TReference()
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{
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}
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//=======================================================================
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//function : GetID
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//purpose :
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//=======================================================================
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const Standard_GUID& TObj_TReference::GetID()
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{
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static Standard_GUID theGUID ("3bbefb44-e618-11d4-ba38-0060b0ee18ea");
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return theGUID;
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}
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//=======================================================================
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//function : ID
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//purpose :
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//=======================================================================
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const Standard_GUID& TObj_TReference::ID() const
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{
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return GetID();
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}
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//=======================================================================
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//function : Set
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//purpose :
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//=======================================================================
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Handle(TObj_TReference) TObj_TReference::Set
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(const TDF_Label& theLabel,
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const Handle(TObj_Object)& theObject,
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const Handle(TObj_Object)& theMaster)
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{
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Handle(TObj_TReference) A;
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if (!theLabel.FindAttribute(TObj_TReference::GetID(), A))
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{
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A = new TObj_TReference;
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theLabel.AddAttribute(A);
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}
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else
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{
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Handle(TObj_Object) anObj = A->Get();
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if ( ! anObj.IsNull() ) anObj->RemoveBackReference(theMaster);
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}
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A->Set(theObject, theMaster->GetLabel());
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if ( ! theObject.IsNull() )
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theObject->AddBackReference(theMaster);
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return A;
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}
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//=======================================================================
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//function : Set
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//purpose :
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//=======================================================================
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void TObj_TReference::Set(const Handle(TObj_Object)& theElem,
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const TDF_Label& theMasterLabel)
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{
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Backup();
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if ( theElem.IsNull() )
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myLabel.Nullify();
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else
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myLabel = theElem->GetLabel();
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myMasterLabel = theMasterLabel;
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}
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//=======================================================================
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//function : Set
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//purpose : for persistent only.
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//=======================================================================
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void TObj_TReference::Set(const TDF_Label& theLabel,
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const TDF_Label& theMasterLabel)
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{
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Backup();
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myLabel = theLabel;
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myMasterLabel = theMasterLabel;
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}
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//=======================================================================
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//function : Get
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//purpose :
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//=======================================================================
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Handle(TObj_Object) TObj_TReference::Get() const
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{
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Handle(TObj_TObject) aTObject;
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Handle(TObj_Object) anObject;
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// Take TObj_TObject from label and get from it TObj_Object
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if ( myLabel.IsNull() || ! myLabel.FindAttribute(TObj_TObject::GetID(), aTObject) )
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{
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return anObject;
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}
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anObject = aTObject->Get();
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return anObject;
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}
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//=======================================================================
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//function : NewEmpty
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//purpose :
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//=======================================================================
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Handle(TDF_Attribute) TObj_TReference::NewEmpty () const
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{
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return new TObj_TReference();
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}
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//=======================================================================
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//function : Restore
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//purpose :
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//=======================================================================
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void TObj_TReference::Restore(const Handle(TDF_Attribute)& theWith)
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{
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Handle(TObj_TReference) aReference = Handle(TObj_TReference)::DownCast (theWith);
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myLabel = aReference->myLabel;
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myMasterLabel = aReference->myMasterLabel;
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}
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//=======================================================================
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//function : Paste
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//purpose :
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//=======================================================================
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void TObj_TReference::Paste (const Handle(TDF_Attribute)& theInto,
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const Handle(TDF_RelocationTable)& RT) const
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{
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Handle(TObj_TReference) aReference = Handle(TObj_TReference)::DownCast (theInto);
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Handle(TObj_TObject) aObject, aMasterTObj;
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if (myLabel.IsNull())
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{
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// unvalidity if it neccessary
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aReference->myLabel.Nullify();
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return;
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}
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// get new referenced object
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TDF_Label aRefLabel = myLabel;
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if(!RT->HasRelocation(myLabel, aRefLabel))
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aRefLabel = myLabel;
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aRefLabel.FindAttribute(TObj_TObject::GetID(), aObject);
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Handle(TObj_Object) anIObject;
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if ( ! aObject.IsNull() )
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anIObject = aObject->Get();
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// find correct master label
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Handle(TObj_Object) aMasterObj;
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TObj_Object::GetObj(aReference->Label(), aMasterObj, Standard_True);
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TDF_Label aMasterLabel;
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if ( ! aMasterObj.IsNull() ) aMasterLabel = aMasterObj->GetLabel();
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if ( aMasterLabel.IsNull() ||
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! aMasterLabel.FindAttribute(TObj_TObject::GetID(), aMasterTObj))
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return;
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// set master and referenced label
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aReference->Set(anIObject, aMasterLabel);
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// update back references
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if ( !anIObject.IsNull() )
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anIObject->AddBackReference(aMasterTObj->Get());
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}
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//=======================================================================
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//function : BeforeForget
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//purpose : for correct tranzaction mechanism.
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//=======================================================================
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void TObj_TReference::BeforeForget()
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{
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// check if master object exist
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if(myMasterLabel.IsNull())
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return;
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// removing back reference
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Handle(TObj_Object) aMasterObject;
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Handle(TObj_TObject) aTObject;
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if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
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return;
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aMasterObject = aTObject->Get();
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Handle(TObj_Object) anObj = Get();
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if(anObj.IsNull())
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return;
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aMasterObject->BeforeForgetReference( GetLabel() );
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anObj->RemoveBackReference( aMasterObject );
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}
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//=======================================================================
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//function : BeforeUndo
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//purpose :
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//=======================================================================
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Standard_Boolean TObj_TReference::BeforeUndo(const Handle(TDF_AttributeDelta)& theDelta,
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const Standard_Boolean /*isForced*/)
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{
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if (!theDelta->IsKind(STANDARD_TYPE(TDF_DeltaOnAddition)))
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return Standard_True;
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if(myMasterLabel.IsNull())
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return Standard_True;
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Handle(TObj_Object) anObject = Get();
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if( anObject.IsNull() )
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return Standard_True;
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Handle(TObj_Object) aMasterObject;
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Handle(TObj_TObject) aTObject;
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if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
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return Standard_True;
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aMasterObject = aTObject->Get();
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if( !anObject.IsNull() )
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anObject->RemoveBackReference( aMasterObject );
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return Standard_True;
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}
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//=======================================================================
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//function : AfterUndo
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//purpose :
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//=======================================================================
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Standard_Boolean TObj_TReference::AfterUndo(const Handle(TDF_AttributeDelta)& theDelta,
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const Standard_Boolean /*isForced*/)
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{
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if (!theDelta->IsKind(STANDARD_TYPE(TDF_DeltaOnRemoval)))
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return Standard_True;
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if(myMasterLabel.IsNull())
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return Standard_True;
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Handle(TObj_Object) anObject = Get();
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if( anObject.IsNull() )
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return Standard_True;
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Handle(TObj_Object) aMasterObject;
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Handle(TObj_TObject) aTObject;
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if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
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return Standard_True;
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aMasterObject = aTObject->Get();
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if( !anObject.IsNull() )
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anObject->AddBackReference( aMasterObject );
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return Standard_True;
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}
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//=======================================================================
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//function : AfterResume
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//purpose :
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//=======================================================================
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void TObj_TReference::AfterResume()
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{
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if(myMasterLabel.IsNull())
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return;
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Handle(TObj_Object) aMasterObject;
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Handle(TObj_TObject) aTObject;
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if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
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return;
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aMasterObject = aTObject->Get();
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Handle(TObj_Object) anObject = Get();
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if ( !anObject.IsNull() )
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anObject->AddBackReference( aMasterObject );
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}
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//=======================================================================
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//function : AfterRetrieval
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//purpose :
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//=======================================================================
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Standard_Boolean TObj_TReference::AfterRetrieval(const Standard_Boolean /*forceIt*/)
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{
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if(myMasterLabel.IsNull())
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return Standard_True;
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Handle(TObj_Object) anObject = Get();
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Handle(TObj_Object) aMasterObject;
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Handle(TObj_TObject) aTObject;
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if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
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return Standard_False;
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aMasterObject = aTObject->Get();
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if ( !anObject.IsNull() )
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anObject->AddBackReference( aMasterObject );
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return Standard_True;
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}
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