src/undo.h

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 /* code ported from gedit */
  21
  22 #ifndef __UNDO_H__
  23 #define __UNDO_H__
  24
  25 #include <glib.h>
  26 #include <gtk/gtkwidget.h>
  27 #include <gtk/gtkitemfactory.h>
  28
  29 typedef enum
  30 {
  31         UNDO_ACTION_INSERT,
  32         UNDO_ACTION_DELETE,
  33         UNDO_ACTION_REPLACE_INSERT,
  34         UNDO_ACTION_REPLACE_DELETE,
  35 } UndoAction;
  36
  37 typedef enum
  38 {
  39         UNDO_STATE_TRUE,
  40         UNDO_STATE_FALSE,
  41         UNDO_STATE_UNCHANGED,
  42         UNDO_STATE_REFRESH,
  43 } UndoState;
  44
  45 typedef struct _UndoMain UndoMain;
  46
  47 typedef void (*UndoChangeStateFunc)     (UndoMain       *undostruct,
  48                                          gint            undo_state,
  49                                          gint            redo_state,
  50                                          gpointer        data);
  51
  52 struct _UndoMain
  53 {
  54         GtkWidget *text;
  55
  56         GList *undo;
  57         GList *redo;
  58
  59         UndoChangeStateFunc change_state_func;
  60         gpointer change_state_data;
  61
  62         gboolean undo_state : 1;
  63         gboolean redo_state : 1;
  64
  65         gint paste;
  66 };
  67
  68 UndoMain *undo_init             (GtkWidget              *text);
  69 void undo_destroy               (UndoMain               *undostruct);
  70
  71 void undo_set_change_state_func (UndoMain               *undostruct,
  72                                  UndoChangeStateFunc     func,
  73                                  gpointer                data);
  74
  75 void undo_undo                  (UndoMain               *undostruct);
  76 void undo_redo                  (UndoMain               *undostruct);
  77
  78 #endif /* __UNDO_H__ */