/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtDBus module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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 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.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

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** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QDBUSREPLY_H

#define QDBUSREPLY_H

#include <QtCore/qglobal.h>

#include <QtCore/qvariant.h>

#include <QtDBus/qdbusmacros.h>

#include <QtDBus/qdbusmessage.h>

#include <QtDBus/qdbuserror.h>

#include <QtDBus/qdbusextratypes.h>

#include <QtDBus/qdbuspendingreply.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(DBus)

QDBUS_EXPORT void qDBusReplyFill(const QDBusMessage &reply, QDBusError &error, QVariant &data);

template<typename T>

class QDBusReply

{

    typedef T Type;

public:

    inline QDBusReply(const QDBusMessage &reply)

    {

        *this = reply;

    }

    inline QDBusReply& operator=(const QDBusMessage &reply)

    {

        QVariant data(qMetaTypeId(&m_data), reinterpret_cast<void*>(0));

        qDBusReplyFill(reply, m_error, data);

        m_data = qvariant_cast<Type>(data);

        return *this;

    }

    inline QDBusReply(const QDBusPendingCall &pcall)

    {

        *this = pcall;

    }

    inline QDBusReply &operator=(const QDBusPendingCall &pcall)

    {

        QDBusPendingCall other(pcall);

        other.waitForFinished();

        return *this = other.reply();

    }

    inline QDBusReply(const QDBusPendingReply<T> &reply)

    {

        *this = static_cast<QDBusPendingCall>(reply);

    }

    inline QDBusReply(const QDBusError &dbusError = QDBusError())

        : m_error(dbusError), m_data(Type())

    {

    }

    inline QDBusReply& operator=(const QDBusError& dbusError)

    {

        m_error = dbusError;

        m_data = Type();

        return *this;

    }

    inline QDBusReply& operator=(const QDBusReply& other)

    {

        m_error = other.m_error;

        m_data = other.m_data;

        return *this;

    }

    inline bool isValid() const { return !m_error.isValid(); }

    inline const QDBusError& error() { return m_error; }

    inline Type value() const

    {

        return m_data;

    }

    inline operator Type () const

    {

        return m_data;

    }

private:

    QDBusError m_error;

    Type m_data;

};

# ifndef Q_QDOC

// specialize for QVariant:

template<> inline QDBusReply<QVariant>&

QDBusReply<QVariant>::operator=(const QDBusMessage &reply)

{

    void *null = 0;

    QVariant data(qMetaTypeId<QDBusVariant>(), null);

    qDBusReplyFill(reply, m_error, data);

    m_data = qvariant_cast<QDBusVariant>(data).variant();

    return *this;

}

// specialize for void:

template<>

class QDBusReply<void>

{

public:

    inline QDBusReply(const QDBusMessage &reply)

        : m_error(reply)

    {

    }

    inline QDBusReply& operator=(const QDBusMessage &reply)

    {

        m_error = reply;

        return *this;

    }

    inline QDBusReply(const QDBusError &dbusError = QDBusError())

        : m_error(dbusError)

    {

    }

    inline QDBusReply(const QDBusPendingCall &pcall)

    {

        *this = pcall;

    }

    inline QDBusReply &operator=(const QDBusPendingCall &pcall)

    {

        QDBusPendingCall other(pcall);

        other.waitForFinished();

        return *this = other.reply();

    }

    inline QDBusReply& operator=(const QDBusError& dbusError)

    {

        m_error = dbusError;

        return *this;

    }

    inline QDBusReply& operator=(const QDBusReply& other)

    {

        m_error = other.m_error;

        return *this;

    }

    inline bool isValid() const { return !m_error.isValid(); }

    inline const QDBusError& error() { return m_error; }

private:

    QDBusError m_error;

};

# endif

QT_END_NAMESPACE

QT_END_HEADER

#endif