/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
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** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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**
** 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
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** 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
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDECLARATIVESTATEGROUP_H
#define QDECLARATIVESTATEGROUP_H

#include "private/qdeclarativestate_p.h"

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QDeclarativeStateGroupPrivate;
class Q_DECLARATIVE_EXPORT QDeclarativeStateGroup : public QObject, public QDeclarativeParserStatus
{
    Q_OBJECT
    Q_INTERFACES(QDeclarativeParserStatus)
    Q_DECLARE_PRIVATE(QDeclarativeStateGroup)

    Q_PROPERTY(QString state READ state WRITE setState NOTIFY stateChanged)
    Q_PROPERTY(QDeclarativeListProperty<QDeclarativeState> states READ statesProperty DESIGNABLE false)
    Q_PROPERTY(QDeclarativeListProperty<QDeclarativeTransition> transitions READ transitionsProperty DESIGNABLE false)

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

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

    QDeclarativeListProperty<QDeclarativeState> statesProperty();
    QList<QDeclarativeState *> states() const;

    QDeclarativeListProperty<QDeclarativeTransition> transitionsProperty();

    QDeclarativeState *findState(const QString &name) const;

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

private:
    friend class QDeclarativeState;
    bool updateAutoState();
    void removeState(QDeclarativeState *state);
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QDeclarativeStateGroup)

#endif // QDECLARATIVESTATEGROUP_H
