/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtGui module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QUNDOSTACK_P_H

#define QUNDOSTACK_P_H

#include <private/qobject_p.h>

#include <QtCore/qlist.h>

#include <QtCore/qstring.h>

#include <QtGui/qaction.h>

#include "qundostack.h"

QT_BEGIN_NAMESPACE

class QUndoCommand;

class QUndoGroup;

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp.  This header

// file may change from version to version without notice, or even be removed.

//

// We mean it.

//

class QUndoCommandPrivate

{

public:

    QUndoCommandPrivate() : id(-1) {}

    QList<QUndoCommand*> child_list;

    QString text;

    int id;

};

#ifndef QT_NO_UNDOSTACK

class QUndoStackPrivate : public QObjectPrivate

{

    Q_DECLARE_PUBLIC(QUndoStack)

public:

    QUndoStackPrivate() : index(0), clean_index(0), group(0), undo_limit(0) {}

    QList<QUndoCommand*> command_list;

    QList<QUndoCommand*> macro_stack;

    int index;

    int clean_index;

    QUndoGroup *group;

    int undo_limit;

    void setIndex(int idx, bool clean);

    bool checkUndoLimit();

};

#ifndef QT_NO_ACTION

class QUndoAction : public QAction

{

    Q_OBJECT

public:

    QUndoAction(const QString &prefix, QObject *parent = 0);

public Q_SLOTS:

    void setPrefixedText(const QString &text);

private:

    QString m_prefix;

};

#endif // QT_NO_ACTION

QT_END_NAMESPACE

#endif // QT_NO_UNDOSTACK

#endif // QUNDOSTACK_P_H