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85 lines
2.0 KiB
85 lines
2.0 KiB
/* This file is part of the KDE libraries
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Copyright (C) 2001 Christoph Cullmann <cullmann@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef __ktexteditor_undointerface_h__
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#define __ktexteditor_undointerface_h__
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#include <tdelibs_export.h>
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class TQCString;
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namespace KTextEditor
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{
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/**
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* This is an interface to undo functionality of a Document.
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*/
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class KTEXTEDITOR_EXPORT UndoInterface
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{
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friend class PrivateUndoInterface;
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public:
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UndoInterface ();
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virtual ~UndoInterface ();
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unsigned int undoInterfaceNumber () const;
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protected:
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void setUndoInterfaceDCOPSuffix (const TQCString &suffix);
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//
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// slots !!!
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//
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public:
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virtual void undo () = 0;
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virtual void redo () = 0;
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virtual void clearUndo () = 0;
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virtual void clearRedo () = 0;
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virtual unsigned int undoCount () const = 0;
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virtual unsigned int redoCount () const = 0;
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/**
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returns the maximum of undo steps possible, 0 means no limit !
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*/
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virtual unsigned int undoSteps () const = 0;
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virtual void setUndoSteps ( unsigned int steps ) = 0;
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//
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// signals !!!
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//
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public:
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virtual void undoChanged () = 0;
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private:
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class PrivateUndoInterface *d;
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static unsigned int globalUndoInterfaceNumber;
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unsigned int myUndoInterfaceNumber;
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};
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KTEXTEDITOR_EXPORT UndoInterface *undoInterface (class Document *doc);
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}
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#endif
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