/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the Qt Designer of the Qt Toolkit.
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** GNU Lesser General Public License Usage
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** file. Please review the following information to ensure the GNU Lesser
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** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
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** file. Please review the following information to ensure the GNU General
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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QDESIGNERUNDOSTACK_H
#define QDESIGNERUNDOSTACK_H

#include <QtCore/QObject>

QT_BEGIN_NAMESPACE
class QUndoStack;
class QUndoCommand;

namespace qdesigner_internal {

/* QDesignerUndoStack: A QUndoStack extended by a way of setting it to
 * "dirty" indepently of commands (by modifications without commands
 * such as resizing). Accomplished via bool m_fakeDirty flag. The
 * lifecycle of the QUndoStack is managed by the QUndoGroup. */
class QDesignerUndoStack : public QObject
{
    Q_DISABLE_COPY(QDesignerUndoStack)
    Q_OBJECT
public:
    explicit QDesignerUndoStack(QObject *parent = 0);
    virtual ~QDesignerUndoStack();

    void push(QUndoCommand * cmd);
    void beginMacro(const QString &text);
    void endMacro();
    int  index() const;

    const QUndoStack *qundoStack() const;
    QUndoStack *qundoStack();

    bool isDirty() const;

signals:
    void changed();

public slots:
    void setDirty(bool);

private:
    QUndoStack *m_undoStack;
    bool m_fakeDirty;
};

} // namespace qdesigner_internal

QT_END_NAMESPACE

#endif // QDESIGNERUNDOSTACK_H