// Created on: 2002-10-30
// Created by: Michael SAZONOV
// Copyright (c) 2002-2014 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.

#include <BinMDF_ReferenceDriver.hxx>
#include <BinObjMgt_Persistent.hxx>
#include <Message_Messenger.hxx>
#include <Standard_Type.hxx>
#include <TDF_Attribute.hxx>
#include <TDF_Reference.hxx>

IMPLEMENT_STANDARD_RTTIEXT(BinMDF_ReferenceDriver, BinMDF_ADriver)

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

BinMDF_ReferenceDriver::BinMDF_ReferenceDriver(const occ::handle<Message_Messenger>& theMsgDriver)
    : BinMDF_ADriver(theMsgDriver, STANDARD_TYPE(TDF_Reference)->Name())
{
}

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

occ::handle<TDF_Attribute> BinMDF_ReferenceDriver::NewEmpty() const
{
  return new TDF_Reference();
}

//=======================================================================
// function : Paste
// purpose  : persistent -> transient (retrieve)
//=======================================================================

bool BinMDF_ReferenceDriver::Paste(const BinObjMgt_Persistent&       theSource,
                                   const occ::handle<TDF_Attribute>& theTarget,
                                   BinObjMgt_RRelocationTable&) const
{
  occ::handle<TDF_Reference> aRef = occ::down_cast<TDF_Reference>(theTarget);

  TDF_Label tLab; // Null label.
  if (!theSource.GetLabel(aRef->Label().Data(), tLab))
  {
    return false;
  }

  // set referenced label
  aRef->Set(tLab);
  return true;
}

//=======================================================================
// function : Paste
// purpose  : transient -> persistent (store)
//=======================================================================

void BinMDF_ReferenceDriver::Paste(const occ::handle<TDF_Attribute>& theSource,
                                   BinObjMgt_Persistent&             theTarget,
                                   NCollection_IndexedMap<occ::handle<Standard_Transient>>&) const
{
  occ::handle<TDF_Reference> aRef = occ::down_cast<TDF_Reference>(theSource);
  if (!aRef.IsNull())
  {
    const TDF_Label& lab    = aRef->Label();
    const TDF_Label& refLab = aRef->Get();
    if (!lab.IsNull() && !refLab.IsNull())
    {
      if (lab.IsDescendant(refLab.Root()))
      { // Internal reference
        theTarget << refLab;
      }
    }
  }
}
