/****************************************************************************
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the QtQml module of the Qt Toolkit.
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** GNU Lesser General Public License Usage
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** Public License version 3.0 as published by the Free Software Foundation
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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QQUICKSTATEGROUP_H
#define QQUICKSTATEGROUP_H

#include "qquickstate_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QQuickStateGroupPrivate;
class Q_QUICK_EXPORT QQuickStateGroup : public QObject, public QQmlParserStatus
{
    Q_OBJECT
    Q_INTERFACES(QQmlParserStatus)
    Q_DECLARE_PRIVATE(QQuickStateGroup)

    Q_PROPERTY(QString state READ state WRITE setState NOTIFY stateChanged)
    Q_PROPERTY(QQmlListProperty<QQuickState> states READ statesProperty DESIGNABLE false)
    Q_PROPERTY(QQmlListProperty<QQuickTransition> transitions READ transitionsProperty DESIGNABLE false)

public:
    QQuickStateGroup(QObject * = 0);
    virtual ~QQuickStateGroup();

    QString state() const;
    void setState(const QString &);

    QQmlListProperty<QQuickState> statesProperty();
    QList<QQuickState *> states() const;

    QQmlListProperty<QQuickTransition> transitionsProperty();

    QQuickState *findState(const QString &name) const;
    void removeState(QQuickState *state);

    virtual void classBegin();
    virtual void componentComplete();
Q_SIGNALS:
    void stateChanged(const QString &);

private:
    friend class QQuickState;
    friend class QQuickStatePrivate;
    bool updateAutoState();
    void stateAboutToComplete();
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QQuickStateGroup)

QT_END_HEADER

#endif // QQUICKSTATEGROUP_H