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undointerface.h
1 /* This file is part of the KDE libraries
2  Copyright (C) 2001 Christoph Cullmann <cullmann@kde.org>
3 
4  This library is free software; you can redistribute it and/or
5  modify it under the terms of the GNU Library General Public
6  License version 2 as published by the Free Software Foundation.
7 
8  This library is distributed in the hope that it will be useful,
9  but WITHOUT ANY WARRANTY; without even the implied warranty of
10  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11  Library General Public License for more details.
12 
13  You should have received a copy of the GNU Library General Public License
14  along with this library; see the file COPYING.LIB. If not, write to
15  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
16  Boston, MA 02110-1301, USA.
17 */
18 
19 #ifndef __ktexteditor_undointerface_h__
20 #define __ktexteditor_undointerface_h__
21 
22 #include <kdelibs_export.h>
23 
24 class TQCString;
25 
26 namespace KTextEditor
27 {
28 
32 class KTEXTEDITOR_EXPORT UndoInterface
33 {
34  friend class PrivateUndoInterface;
35 
36  public:
37  UndoInterface ();
38  virtual ~UndoInterface ();
39 
40  unsigned int undoInterfaceNumber () const;
41 
42  protected:
43  void setUndoInterfaceDCOPSuffix (const TQCString &suffix);
44 
45  //
46  // slots !!!
47  //
48  public:
49  virtual void undo () = 0;
50 
51  virtual void redo () = 0;
52 
53  virtual void clearUndo () = 0;
54 
55  virtual void clearRedo () = 0;
56 
57  virtual unsigned int undoCount () const = 0;
58 
59  virtual unsigned int redoCount () const = 0;
60 
64  virtual unsigned int undoSteps () const = 0;
65 
66  virtual void setUndoSteps ( unsigned int steps ) = 0;
67 
68  //
69  // signals !!!
70  //
71  public:
72  virtual void undoChanged () = 0;
73 
74  private:
75  class PrivateUndoInterface *d;
76  static unsigned int globalUndoInterfaceNumber;
77  unsigned int myUndoInterfaceNumber;
78 };
79 
80 KTEXTEDITOR_EXPORT UndoInterface *undoInterface (class Document *doc);
81 
82 }
83 
84 #endif

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