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/*
Copyright (C) 1999 Glen Parker <glenebob@nwlink.com>
Copyright (C) 2002 Joseph Wenninger <jowenn@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 as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
--------------------------------------------------------------------
This implements a dialog used to display and control undo/redo history.
It uses a specialized QListBox subclass to provide a selection mechanism
that will:
1) always have the first item selected, and
2) maintain a contiguous multiple selection
*/
#ifndef __undohistory_h_
#define __undohistory_h_
#include <qdialog.h>
#include <qlistbox.h>
#include "kateview.h"
class UndoListBox;
// the dialog class that provides the interface to the user
class UndoHistory : public QDialog
{
Q_OBJECT
public:
/**
Constructed just like a regular QDialog
*/
UndoHistory(KateView*, QWidget *parent=0, const char *name=0, bool modal=FALSE, WFlags f=0);
virtual ~UndoHistory();
public slots:
/**
This should be called whenever a change occurs in the undo/redo list.
Causes the dialog to update its interface.
*/
void newUndo();
signals:
/**
Emitted when the user hits the Undo button. Specifies the number of
operations to undo.
*/
void undo(int);
/**
Emitted when the user hits the Redo button. Specifies the number of
undone operations to redo.
*/
void redo(int);
protected:
KateView *kWrite;
UndoListBox *lbUndo,
*lbRedo;
QPushButton *btnUndo,
*btnRedo;
protected slots:
void slotUndo();
void slotRedo();
void slotUndoSelChanged(int);
void slotRedoSelChanged(int);
};
// listbox class used to provide contiguous, 0-based selection
// this is used internally
class UndoListBox : public QListBox
{
Q_OBJECT
public:
UndoListBox(QWidget * parent=0, const char * name=0, WFlags f=0);
virtual ~UndoListBox();
int selCount();
void setSelCount(int count);
void insertItem (const QString &text, int index = -1);
void removeItem (int index);
void clear();
protected:
int _selCount;
signals:
void sigSelected(int);
protected slots:
void _slotSelectionChanged();
};
#endif
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