/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the UiHelpers playground module of the Qt Toolkit.
**
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** accordance with the commercial license agreement provided with the
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** ensure the GNU Lesser General Public License version 2.1 requirements
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****************************************************************************/

#ifndef UIHELPERS_UIUNDOGROUP_H
#define UIHELPERS_UIUNDOGROUP_H

#include "uihelpersglobal.h"
#include <QtCore/qobject.h>
#include <QtCore/qstring.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE_UIHELPERS

class UiUndoGroupPrivate;
class UiUndoStack;
class UiAction;

#ifndef QT_NO_UNDOGROUP

class UIHELPERS_EXPORT UiUndoGroup : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(UiUndoGroup)

public:
    explicit UiUndoGroup(QObject *parent = 0);
    ~UiUndoGroup();

    void addStack(UiUndoStack *stack);
    void removeStack(UiUndoStack *stack);
    QList<UiUndoStack*> stacks() const;
    UiUndoStack *activeStack() const;

#ifndef QT_NO_ACTION
    UiAction *createUndoAction(QObject *parent,
                                const QString &prefix = QString()) const;
    UiAction *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(UiUndoStack *stack);

Q_SIGNALS:
    void activeStackChanged(UiUndoStack *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(UiUndoGroup)
};

#endif // QT_NO_UNDOGROUP

QT_END_NAMESPACE_UIHELPERS

QT_END_HEADER

#endif // UIHELPERS_UIUNDOGROUP_H