1 files changed, 84 insertions, 0 deletions
diff --git a/interfaces/ktexteditor/undointerface.h b/interfaces/ktexteditor/undointerface.h
new file mode 100644
index 000000000..73146107e
--- /dev/null
+++ b/interfaces/ktexteditor/undointerface.h
@@ -0,0 +1,84 @@
+/* This file is part of the KDE libraries
+   Copyright (C) 2001 Christoph Cullmann <cullmann@kde.org>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License version 2 as published by the Free Software Foundation.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+#ifndef __ktexteditor_undointerface_h__
+#define __ktexteditor_undointerface_h__
+
+#include <kdelibs_export.h>
+
+class QCString;
+
+namespace KTextEditor
+{
+
+/**
+*  This is an interface to undo functionality of a Document.
+*/
+class KTEXTEDITOR_EXPORT UndoInterface
+{
+  friend class PrivateUndoInterface;
+
+  public:
+    UndoInterface ();
+    virtual ~UndoInterface ();
+
+    unsigned int undoInterfaceNumber () const;
+    
+  protected:  
+    void setUndoInterfaceDCOPSuffix (const QCString &suffix); 
+
+  //
+  // slots !!!
+  //
+  public:
+    virtual void undo () = 0;
+
+    virtual void redo () = 0;
+
+    virtual void clearUndo () = 0;
+
+    virtual void clearRedo () = 0;
+
+    virtual unsigned int undoCount () const = 0;
+
+    virtual unsigned int redoCount () const = 0;
+
+    /**
+      returns the maximum of undo steps possible, 0 means no limit !
+     */
+    virtual unsigned int undoSteps () const = 0;
+
+    virtual void setUndoSteps ( unsigned int steps ) = 0;
+
+  //
+  // signals !!!
+  //
+  public:
+    virtual void undoChanged () = 0;
+
+  private:
+    class PrivateUndoInterface *d;
+    static unsigned int globalUndoInterfaceNumber;
+    unsigned int myUndoInterfaceNumber;
+};
+
+KTEXTEDITOR_EXPORT UndoInterface *undoInterface (class Document *doc);
+
+}
+
+#endif