/****************************************************************************
**
** Copyright (C) 2014 BogDan Vatra <bogdan@kde.org>
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
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** accordance with the commercial license agreement provided with the
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** following information to ensure the GNU Lesser General Public License
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****************************************************************************/

#ifndef QANDROIDEVENTDISPATCHER_H
#define QANDROIDEVENTDISPATCHER_H

#include <QtCore/QMutex>
#include <QtCore/QSemaphore>
#include <QtPlatformSupport/private/qunixeventdispatcher_qpa_p.h>

class QAndroidEventDispatcher : public QUnixEventDispatcherQPA
{
    Q_OBJECT
public:
    explicit QAndroidEventDispatcher(QObject *parent = 0);
    ~QAndroidEventDispatcher();
    void start();
    void stop();

    void goingToStop(bool stop);

protected:
    int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
               timespec *timeout);

    bool processEvents(QEventLoop::ProcessEventsFlags flags);

private:
    QAtomicInt m_stopRequest;
    QAtomicInt m_goingToStop;
    QSemaphore m_semaphore;
};

class QAndroidEventDispatcherStopper
{
public:
    static QAndroidEventDispatcherStopper *instance();
    static bool stopped() {return !instance()->started; }
    void startAll();
    void stopAll();
    void addEventDispatcher(QAndroidEventDispatcher *dispatcher);
    void removeEventDispatcher(QAndroidEventDispatcher *dispatcher);
    void goingToStop(bool stop);

private:
    QMutex m_mutex;
    bool started = true;
    QVector<QAndroidEventDispatcher *> m_dispatchers;
};


#endif // QANDROIDEVENTDISPATCHER_H
