Integration of OCCT 6.5.0 from SVN

src/TObj/TObj_TReference.cxx

@@ -0,0 +1,318 @@
+// File:        TObj_TReference.cxx
+// Created:     Tue Nov  23 12:55:42 2004
+// Author:      Pavel TELKOV
+// Copyright:   Open CASCADE  2007
+// The original implementation Copyright: (C) RINA S.p.A
+
+#include <TObj_Object.hxx>
+#include <TObj_TReference.hxx>
+#include <TObj_TObject.hxx>
+
+#include <Standard_GUID.hxx>
+#include <TDF_RelocationTable.hxx>
+#include <TDF_DeltaOnAddition.hxx>
+
+IMPLEMENT_STANDARD_HANDLE(TObj_TReference,TDF_Attribute)
+IMPLEMENT_STANDARD_RTTIEXT(TObj_TReference,TDF_Attribute)
+
+//=======================================================================
+//function : TObj_TReference
+//purpose  : 
+//=======================================================================
+
+TObj_TReference::TObj_TReference()
+{
+}
+    
+//=======================================================================
+//function : GetID
+//purpose  : 
+//=======================================================================
+
+const Standard_GUID& TObj_TReference::GetID()
+{
+  static Standard_GUID theGUID ("3bbefb44-e618-11d4-ba38-0060b0ee18ea");
+  return theGUID;
+}
+
+//=======================================================================
+//function : ID
+//purpose  : 
+//=======================================================================
+
+const Standard_GUID& TObj_TReference::ID() const
+{
+  return GetID();
+}
+
+//=======================================================================
+//function : Set
+//purpose  : 
+//=======================================================================
+
+Handle(TObj_TReference) TObj_TReference::Set
+                (const TDF_Label& theLabel, 
+                 const Handle(TObj_Object)& theObject,
+                 const Handle(TObj_Object)& theMaster)
+{
+  Handle(TObj_TReference) A;
+  if (!theLabel.FindAttribute(TObj_TReference::GetID(), A)) 
+  {
+    A = new TObj_TReference;
+    theLabel.AddAttribute(A);
+  }
+  else
+  {
+    Handle(TObj_Object) anObj = A->Get();
+    if ( ! anObj.IsNull() ) anObj->RemoveBackReference(theMaster);
+  }
+  A->Set(theObject, theMaster->GetLabel());
+  if ( ! theObject.IsNull() )
+    theObject->AddBackReference(theMaster);
+  return A;
+}
+
+//=======================================================================
+//function : Set
+//purpose  : 
+//=======================================================================
+
+void TObj_TReference::Set(const Handle(TObj_Object)& theElem,
+                              const TDF_Label& theMasterLabel)
+{
+  Backup();
+  if ( theElem.IsNull() ) 
+    myLabel.Nullify();
+  else 
+    myLabel = theElem->GetLabel();
+
+  myMasterLabel = theMasterLabel;
+}
+
+//=======================================================================
+//function : Set
+//purpose  : for persistent only.
+//=======================================================================
+
+void TObj_TReference::Set(const TDF_Label& theLabel,
+                              const TDF_Label& theMasterLabel)
+{
+  Backup();
+  myLabel = theLabel;
+  myMasterLabel = theMasterLabel;
+}
+
+//=======================================================================
+//function : Get
+//purpose  : 
+//=======================================================================
+
+Handle(TObj_Object) TObj_TReference::Get() const
+{
+  Handle(TObj_TObject) aTObject;
+  Handle(TObj_Object) anObject;
+  // Take TObj_TObject from label and get from it TObj_Object
+  if ( myLabel.IsNull() || ! myLabel.FindAttribute(TObj_TObject::GetID(), aTObject) ) 
+  {
+    return anObject;
+  }
+  anObject = Handle(TObj_Object)::DownCast(aTObject->Get());
+  return anObject;
+}
+
+//=======================================================================
+//function : NewEmpty
+//purpose  : 
+//=======================================================================
+
+Handle(TDF_Attribute) TObj_TReference::NewEmpty () const
+{  
+  return new TObj_TReference();
+}
+
+//=======================================================================
+//function : Restore
+//purpose  : 
+//=======================================================================
+
+void TObj_TReference::Restore(const Handle(TDF_Attribute)& theWith) 
+{
+  Handle(TObj_TReference) aReference = Handle(TObj_TReference)::DownCast (theWith);
+  myLabel = aReference->myLabel;
+  myMasterLabel = aReference->myMasterLabel;
+}
+
+//=======================================================================
+//function : Paste
+//purpose  : 
+//=======================================================================
+
+void TObj_TReference::Paste (const Handle(TDF_Attribute)& theInto,
+                                 const Handle(TDF_RelocationTable)& RT) const
+{ 
+  Handle(TObj_TReference) aReference = Handle(TObj_TReference)::DownCast (theInto);
+  Handle(TObj_TObject) aObject, aMasterTObj;
+  if (myLabel.IsNull())
+  {
+    //  unvalidity if it neccessary
+    aReference->myLabel.Nullify();
+    return;
+  }
+
+  // get new referenced object
+  TDF_Label aRefLabel = myLabel;
+  if(!RT->HasRelocation(myLabel, aRefLabel)) 
+    aRefLabel = myLabel;
+  aRefLabel.FindAttribute(TObj_TObject::GetID(), aObject);
+  Handle(TObj_Object) anIObject;
+  if ( ! aObject.IsNull() ) 
+    anIObject = aObject->Get();
+  
+  // find correct master label
+  Handle(TObj_Object) aMasterObj;
+  TObj_Object::GetObj(aReference->Label(), aMasterObj, Standard_True);
+  TDF_Label aMasterLabel;
+  if ( ! aMasterObj.IsNull() ) aMasterLabel = aMasterObj->GetLabel();
+  if ( aMasterLabel.IsNull() || 
+       ! aMasterLabel.FindAttribute(TObj_TObject::GetID(), aMasterTObj))
+    return;
+
+  // set master and referenced label
+  aReference->Set(anIObject, aMasterLabel);
+
+  // update back references
+  if ( !anIObject.IsNull() )
+    anIObject->AddBackReference(aMasterTObj->Get());
+}
+
+//=======================================================================
+//function : BeforeForget
+//purpose  : for correct tranzaction mechanism.
+//=======================================================================
+
+void TObj_TReference::BeforeForget()
+{
+  // check if master object exist
+  if(myMasterLabel.IsNull())
+    return;
+
+  // removing back reference
+  Handle(TObj_Object) aMasterObject;
+  Handle(TObj_TObject) aTObject;
+  if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
+    return;
+  aMasterObject = aTObject->Get();
+  
+  Handle(TObj_Object) anObj = Get();
+  if(anObj.IsNull())
+    return;
+  
+  aMasterObject->BeforeForgetReference( GetLabel() );
+  anObj->RemoveBackReference( aMasterObject );
+}
+
+//=======================================================================
+//function : BeforeUndo
+//purpose  : 
+//=======================================================================
+
+Standard_Boolean TObj_TReference::BeforeUndo(const Handle(TDF_AttributeDelta)& theDelta,
+                                                 const Standard_Boolean /*isForced*/)
+{
+  if (!theDelta->IsKind(STANDARD_TYPE(TDF_DeltaOnAddition)))
+    return Standard_True;
+
+  if(myMasterLabel.IsNull())
+    return Standard_True;
+
+  Handle(TObj_Object) anObject = Get();
+  if( anObject.IsNull() ) 
+    return Standard_True;
+
+  Handle(TObj_Object) aMasterObject;
+  Handle(TObj_TObject) aTObject;
+  if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
+    return Standard_True;
+  aMasterObject = aTObject->Get();
+
+  if( !anObject.IsNull() )
+    anObject->RemoveBackReference( aMasterObject );
+
+  return Standard_True;
+}
+
+//=======================================================================
+//function : AfterUndo
+//purpose  : 
+//=======================================================================
+
+Standard_Boolean TObj_TReference::AfterUndo(const Handle(TDF_AttributeDelta)& theDelta,
+                                                const Standard_Boolean /*isForced*/)
+{
+  if (!theDelta->IsKind(STANDARD_TYPE(TDF_DeltaOnRemoval)))
+    return Standard_True;
+
+  if(myMasterLabel.IsNull())
+    return Standard_True;
+
+  Handle(TObj_Object) anObject = Get();
+  if( anObject.IsNull() )
+    return Standard_True;
+
+  Handle(TObj_Object) aMasterObject;
+  Handle(TObj_TObject) aTObject;
+
+  if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
+    return Standard_True;
+  aMasterObject = aTObject->Get();
+
+  if( !anObject.IsNull() )
+    anObject->AddBackReference( aMasterObject );
+
+  return Standard_True;
+}
+
+
+//=======================================================================
+//function : AfterResume
+//purpose  : 
+//=======================================================================
+
+void TObj_TReference::AfterResume()
+{
+  if(myMasterLabel.IsNull())
+    return;
+
+  Handle(TObj_Object) aMasterObject;
+  Handle(TObj_TObject) aTObject;
+  if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
+    return;
+  aMasterObject = aTObject->Get();
+  Handle(TObj_Object) anObject = Get();
+
+  if ( !anObject.IsNull() )
+    anObject->AddBackReference( aMasterObject );
+}
+
+//=======================================================================
+//function : AfterRetrieval
+//purpose  : 
+//=======================================================================
+
+Standard_Boolean TObj_TReference::AfterRetrieval(const Standard_Boolean /*forceIt*/)
+{
+  if(myMasterLabel.IsNull())
+    return Standard_True;
+
+  Handle(TObj_Object) anObject = Get();
+  Handle(TObj_Object) aMasterObject;
+  Handle(TObj_TObject) aTObject;
+  if (!myMasterLabel.FindAttribute(TObj_TObject::GetID(), aTObject ))
+    return Standard_False;
+  
+  aMasterObject = aTObject->Get();
+  if ( !anObject.IsNull() )
+    anObject->AddBackReference( aMasterObject );
+
+  return Standard_True;
+}