/****************************************************************************
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** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtDBus module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
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** General Public License version 3 as published by the Free Software
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
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** included in the packaging of this file. Please review the following
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****************************************************************************/


#ifndef QDBUSUNIXFILEDESCRIPTOR_H
#define QDBUSUNIXFILEDESCRIPTOR_H

#include <QtDBus/qtdbusglobal.h>
#include <QtCore/qshareddata.h>

#ifndef QT_NO_DBUS

#include <utility>

QT_BEGIN_NAMESPACE


class QDBusUnixFileDescriptorPrivate;

class Q_DBUS_EXPORT QDBusUnixFileDescriptor
{
public:
    QDBusUnixFileDescriptor();
    explicit QDBusUnixFileDescriptor(int fileDescriptor);
    QDBusUnixFileDescriptor(const QDBusUnixFileDescriptor &other);
    QDBusUnixFileDescriptor &operator=(QDBusUnixFileDescriptor &&other) noexcept { swap(other); return *this; }
    QDBusUnixFileDescriptor &operator=(const QDBusUnixFileDescriptor &other);
    ~QDBusUnixFileDescriptor();

    void swap(QDBusUnixFileDescriptor &other) noexcept
    { qSwap(d, other.d); }

    bool isValid() const;

    int fileDescriptor() const;
    void setFileDescriptor(int fileDescriptor);

    void giveFileDescriptor(int fileDescriptor);
    int takeFileDescriptor();

    static bool isSupported();

protected:
    typedef QExplicitlySharedDataPointer<QDBusUnixFileDescriptorPrivate>  Data;
    Data d;
};

Q_DECLARE_SHARED(QDBusUnixFileDescriptor)

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QDBusUnixFileDescriptor)

#endif // QT_NO_DBUS
#endif // QDBUSUNIXFILEDESCRIPTOR_H