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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtDBus module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDBUSPENDINGCALL_H
#define QDBUSPENDINGCALL_H

#include <QtCore/qglobal.h>
#include <QtCore/qobject.h>
#include <QtCore/qshareddata.h>

#include <QtDBus/qdbusmacros.h>
#include <QtDBus/qdbusmessage.h>

#ifndef QT_NO_DBUS

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


class QDBusConnection;
class QDBusError;
class QDBusPendingCallWatcher;

class QDBusPendingCallPrivate;
class Q_DBUS_EXPORT QDBusPendingCall
{
public:
    QDBusPendingCall(const QDBusPendingCall &other);
    ~QDBusPendingCall();
    QDBusPendingCall &operator=(const QDBusPendingCall &other);

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

#ifndef Q_QDOC
    // pretend that they aren't here
    bool isFinished() const;
    void waitForFinished();

    bool isError() const;
    bool isValid() const;
    QDBusError error() const;
    QDBusMessage reply() const;
#endif

    static QDBusPendingCall fromError(const QDBusError &error);
    static QDBusPendingCall fromCompletedCall(const QDBusMessage &message);

protected:
    QExplicitlySharedDataPointer<QDBusPendingCallPrivate> d;
    friend class QDBusPendingCallPrivate;
    friend class QDBusPendingCallWatcher;
    friend class QDBusConnection;

    QDBusPendingCall(QDBusPendingCallPrivate *dd);

private:
    QDBusPendingCall();         // not defined
};

class QDBusPendingCallWatcherPrivate;
class Q_DBUS_EXPORT QDBusPendingCallWatcher: public QObject, public QDBusPendingCall
{
    Q_OBJECT
public:
    explicit QDBusPendingCallWatcher(const QDBusPendingCall &call, QObject *parent = 0);
    ~QDBusPendingCallWatcher();

#ifdef Q_QDOC
    // trick qdoc into thinking this method is here
    bool isFinished() const;
#endif
    void waitForFinished();     // non-virtual override

Q_SIGNALS:
    void finished(QDBusPendingCallWatcher *self);

private:
    Q_DECLARE_PRIVATE(QDBusPendingCallWatcher)
    Q_PRIVATE_SLOT(d_func(), void _q_finished())
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QT_NO_DBUS
#endif