// Created by: DAUTRY Philippe
// Copyright (c) 1997-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

//      	----------------------------------
// Version:	0.0
// Version	Date		Purpose
//		0.0	Oct 10 1997	Creation

#include <Standard_GUID.hxx>
#include <Standard_Type.hxx>
#include <TDF_DefaultDeltaOnModification.hxx>
#include <TDF_Label.hxx>

IMPLEMENT_STANDARD_RTTIEXT(TDF_DefaultDeltaOnModification, TDF_DeltaOnModification)

//=================================================================================================

TDF_DefaultDeltaOnModification::TDF_DefaultDeltaOnModification(
  const Handle(TDF_Attribute)& anAttribute)
    : TDF_DeltaOnModification(anAttribute)
{
}

//=================================================================================================

void TDF_DefaultDeltaOnModification::Apply()
{
  const Handle(TDF_Attribute)& savAtt = Attribute();
  Handle(TDF_Attribute)        refAtt;
  if (Label().FindAttribute(savAtt->ID(), refAtt))
    refAtt->DeltaOnModification(this);
}