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 __UNDOMGR_H__
  12 #define __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 {
  26   GObject base;
  27
  28   UndoMgrPrivate *priv;
  29 } UndoMgr;
  30
  31 typedef struct
  32 {
  33   GObjectClass parent_class;
  34
  35   /* Signals */
  36   void (*can_undo)( UndoMgr *um, gboolean can_undo);
  37     void (*can_redo)( UndoMgr *um, gboolean can_redo);
  38 } UndoMgrClass;
  39
  40 GType         undomgr_get_type  (void) G_GNUC_CONST;
  41
  42 GObject*    undomgr_new   (void);
  43 void      undomgr_attach    (UndoMgr *um, GtkWidget *widget);
  44 void      undomgr_detach    (UndoMgr *um, GtkWidget *widget);
  45
  46 /* Clears the stack of undo actions: */
  47 void      undomgr_reset   (UndoMgr *um);
  48
  49 gboolean    undomgr_can_undo  (const UndoMgr *um);
  50 gboolean    undomgr_can_redo  (const UndoMgr *um);
  51
  52 void      undomgr_undo  (UndoMgr *um);
  53 void      undomgr_redo  (UndoMgr *um);
  54
  55 void  undomgr_begin_not_undoable_action   (UndoMgr *um);
  56 void  undomgr_end_not_undoable_action   (UndoMgr *um);
  57
  58 #endif /* __UNDOMGR_H__ */