/*
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

GtkRadiant is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef _IUNDO_H_
#define _IUNDO_H_

#define UNDO_MAJOR "undo"

//start operation
typedef void (*PFN_UNDOSTART) (char *operation);
//end operation
typedef void (*PFN_UNDOEND) (void);
//add brush to the undo
typedef void (*PFN_UNDOADDBRUSH) (brush_t *pBrush);
//end a brush after the operation is performed
typedef void (*PFN_UNDOENDBRUSH) (brush_t *pBrush);
//add a list with brushes to the undo
typedef void (*PFN_UNDOADDBRUSHLIST) (brush_t *brushlist);
//end a list with brushes after the operation is performed
typedef void (*PFN_UNDOENDBRUSHLIST) (brush_t *brushlist);
//add entity to undo
typedef void (*PFN_UNDOADDENTITY) (entity_t *entity);
//end an entity after the operation is performed
typedef void (*PFN_UNDOENDENTITY) (entity_t *entity);
//undo last operation (bSilent == true -> will not print the "undone blah blah message")
typedef void (*PFN_UNDO) (unsigned char bSilent);
//redo last undone operation
typedef void (*PFN_REDO) (void);
//get the undo Id of the next undo (0 if none available)
typedef int (*PFN_GETUNDOID) (void);
//returns true if there is something to be undone available
typedef int  (*PFN_UNDOAVAILABLE) (void);
//returns true if there is something to redo available
typedef int  (*PFN_REDOAVAILABLE) (void);

struct _QERUndoTable
{
  int m_nSize;
  PFN_UNDOSTART m_pfnUndo_Start;
  PFN_UNDOEND m_pfnUndo_End;
  PFN_UNDOADDBRUSH m_pfnUndo_AddBrush;
  PFN_UNDOENDBRUSH m_pfnUndo_EndBrush;
  PFN_UNDOADDBRUSHLIST m_pfnUndo_AddBrushList;
  PFN_UNDOENDBRUSHLIST m_pfnUndo_EndBrushList;
  PFN_UNDOADDENTITY m_pfnUndo_AddEntity;
  PFN_UNDOENDENTITY m_pfnUndo_EndEntity;
  PFN_UNDO m_pfnUndo_Undo;
  PFN_REDO m_pfnUndo_Redo;
  PFN_GETUNDOID m_pfnUndo_GetUndoId;
  PFN_UNDOAVAILABLE m_pfnUndo_UndoAvailable;
  PFN_REDOAVAILABLE m_pfnUndo_RedoAvailable;
};

#ifdef USE_UNDOTABLE_DEFINE
#ifndef __UNDOTABLENAME
#define __UNDOTABLENAME g_UndoTable
#endif
#define Undo_Start __UNDOTABLENAME.m_pfnUndo_Start
#define Undo_End __UNDOTABLENAME.m_pfnUndo_End
#define Undo_AddBrush __UNDOTABLENAME.m_pfnUndo_AddBrush
#define Undo_EndBrush __UNDOTABLENAME.m_pfnUndo_EndBrush
#define Undo_AddBrushList __UNDOTABLENAME.m_pfnUndo_AddBrushList
#define Undo_EndBrushList __UNDOTABLENAME.m_pfnUndo_EndBrushList
#define Undo_AddEntity __UNDOTABLENAME.m_pfnUndo_AddEntity
#define Undo_EndEntity __UNDOTABLENAME.m_pfnUndo_EndEntity
#endif

#endif // _IUNDO_H_