src/undo.h

   1 /* logjam - a GTK client for LiveJournal.
   2  * Copyright (C) 2000-2003 Evan Martin <evan@livejournal.com>
   3  * Ported to LogJam by Ari Pollak <ari@debian.org>
   4  *
   5  * This file is based on gedit-undo-manager.h from gEdit 2.2.1.
   6  * Original authors:
   7  * Copyright (C) 1998, 1999 Alex Roberts, Evan Lawrence
   8  * Copyright (C) 2000, 2001 Chema Celorio, Paolo Maggi
   9  */
  10
  11 #ifndef __LOGJAM_UNDOMGR_H__
  12 #define __LOGJAM_UNDOMGR_H__
  13
  14 #define TYPE_UNDOMGR        (undomgr_get_type ())
  15 #define UNDOMGR(obj)        (GTK_CHECK_CAST ((obj), TYPE_UNDOMGR, UndoMgr))
  16 #define UNDOMGR_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), TYPE_UNDOMGR, UndoMgrClass))
  17 #define IS_UNDOMGR(obj)     (GTK_CHECK_TYPE ((obj), TYPE_UNDOMGR))
  18 #define IS_UNDOMGR_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), TYPE_UNDOMGR))
  19 #define UNDOMGR_GET_CLASS(obj)    (GTK_CHECK_GET_CLASS ((obj), TYPE_UNDOMGR, UndoMgrClass))
  20
  21
  22 typedef struct _UndoMgrPrivate UndoMgrPrivate;
  23
  24 typedef struct {
  25   GObject base;
  26
  27   UndoMgrPrivate *priv;
  28 } UndoMgr;
  29
  30 typedef struct {
  31   GObjectClass parent_class;
  32
  33   /* Signals */
  34   void (*can_undo) (UndoMgr * um, gboolean can_undo);
  35   void (*can_redo) (UndoMgr * um, gboolean can_redo);
  36 } UndoMgrClass;
  37
  38 GType undomgr_get_type(void) G_GNUC_CONST;
  39
  40      GObject *undomgr_new(void);
  41      void undomgr_attach(UndoMgr * um, GtkWidget * widget);
  42      void undomgr_detach(UndoMgr * um, GtkWidget * widget);
  43
  44 /* Clears the stack of undo actions: */
  45      void undomgr_reset(UndoMgr * um);
  46
  47      gboolean undomgr_can_undo(const UndoMgr * um);
  48      gboolean undomgr_can_redo(const UndoMgr * um);
  49
  50      void undomgr_undo(UndoMgr * um);
  51      void undomgr_redo(UndoMgr * um);
  52
  53      void undomgr_begin_not_undoable_action(UndoMgr * um);
  54      void undomgr_end_not_undoable_action(UndoMgr * um);
  55
  56 #endif /* __UNDOMGR_H__ */