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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QUNDOGROUP_H
#define QUNDOGROUP_H
#include <QtCore/qobject.h>
#include <QtCore/qstring.h>
QT_BEGIN_NAMESPACE
class QUndoGroupPrivate;
class QUndoStack;
class QAction;
#ifndef QT_NO_UNDOGROUP
class Q_WIDGETS_EXPORT QUndoGroup : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QUndoGroup)
public:
explicit QUndoGroup(QObject *parent = 0);
~QUndoGroup();
void addStack(QUndoStack *stack);
void removeStack(QUndoStack *stack);
QList<QUndoStack*> stacks() const;
QUndoStack *activeStack() const;
#ifndef QT_NO_ACTION
QAction *createUndoAction(QObject *parent,
const QString &prefix = QString()) const;
QAction *createRedoAction(QObject *parent,
const QString &prefix = QString()) const;
#endif // QT_NO_ACTION
bool canUndo() const;
bool canRedo() const;
QString undoText() const;
QString redoText() const;
bool isClean() const;
public Q_SLOTS:
void undo();
void redo();
void setActiveStack(QUndoStack *stack);
Q_SIGNALS:
void activeStackChanged(QUndoStack *stack);
void indexChanged(int idx);
void cleanChanged(bool clean);
void canUndoChanged(bool canUndo);
void canRedoChanged(bool canRedo);
void undoTextChanged(const QString &undoText);
void redoTextChanged(const QString &redoText);
private:
Q_DISABLE_COPY(QUndoGroup)
};
#endif // QT_NO_UNDOGROUP
QT_END_NAMESPACE
#endif // QUNDOGROUP_H
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