DbUndoController.h

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// Copyright (C) 2002-2017, Open Design Alliance (the "Alliance"). 
// All rights reserved. 
// 
// This software and its documentation and related materials are owned by 
// the Alliance. The software may only be incorporated into application 
// programs owned by members of the Alliance, subject to a signed 
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable  
// trade secrets of the Alliance and its suppliers. The software is also 
// protected by copyright law and international treaty provisions. Application  
// programs incorporating this software must include the following statement 
// with their copyright notices:
//   
//   This application incorporates Teigha(R) software pursuant to a license 
//   agreement with Open Design Alliance.
//   Teigha(R) Copyright (C) 2002-2017 by Open Design Alliance. 
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you 
// acknowledge and accept the above terms.
 
 
#ifndef _ODDBUNDOCONTROLLER_INCLUDED_
#define _ODDBUNDOCONTROLLER_INCLUDED_
 
#include "RxObject.h"
#include "RxIterator.h"
#include "DbRootExport.h"
 
class OdStreamBuf;
 
class DBROOT_EXPORT ODRX_ABSTRACT OdDbUndoControllerRecord : public OdRxObject
{
protected:
  OdDbUndoControllerRecord();
public:
  ODRX_DECLARE_MEMBERS(OdDbUndoControllerRecord);
 
  virtual OdUInt32 options() const = 0;
};
 
typedef OdSmartPtr<OdDbUndoControllerRecord> OdDbUndoControllerRecordPtr;
 
 
class DBROOT_EXPORT ODRX_ABSTRACT OdDbUndoController : public OdRxObject
{
public:
  enum
  {
    kDefault    = 0,
    kBlockBegin = 1,
    kBlockEnd   = 2,
    kMarker     = 3
  };
 
  ODRX_DECLARE_MEMBERS(OdDbUndoController);
  virtual void pushData(OdStreamBuf* pStream, OdUInt32 nSize, OdUInt32 opt = kDefault) = 0;
 
  virtual bool hasData() const = 0;
 
  virtual OdUInt32 popData(OdStreamBuf* pStream) = 0;
 
  virtual OdRxIteratorPtr newRecordStackIterator() const = 0;
 
  virtual void clearData() = 0;
};
 
typedef OdSmartPtr<OdDbUndoController> OdDbUndoControllerPtr;
 
 
#endif // _ODDBUNDOCONTROLLER_INCLUDED_