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/* qdbusreply.h QDBusReply object - a reply from D-Bus
*
* Copyright (C) 2006 Trolltech AS. All rights reserved.
* Author: Thiago Macieira <thiago.macieira@trolltech.com>
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef QDBUSREPLY_H
#define QDBUSREPLY_H
#include <QtCore/qglobal.h>
#include <QtCore/qvariant.h>
#include "qdbusmacros.h"
#include "qdbusmessage.h"
#include "qdbuserror.h"
#include "qdbustypehelper_p.h"
template<typename T>
class QDBusReply
{
typedef T Type;
public:
inline QDBusReply(const QDBusMessage &reply)
: m_data(Type())
{
*this = reply;
}
inline QDBusReply& operator=(const QDBusMessage& reply)
{
m_error = reply;
if (isSuccess())
m_data = QDBusTypeHelper<Type>::fromVariant(reply.at(0));
else
m_data = Type();
return *this;
}
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 isError() const { return m_error.isValid(); }
inline bool isSuccess() 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;
}
static QDBusReply<T> fromVariant(const QDBusReply<QVariant> &variantReply)
{
QDBusReply<T> retval;
retval.m_error = variantReply.m_error;
if (retval.isSuccess()) {
retval.m_data = qvariant_cast<Type>(variantReply.m_data);
if (!qVariantCanConvert<Type>(variantReply.m_data))
retval.m_error = QDBusError(QDBusError::InvalidSignature,
QLatin1String("Unexpected reply signature"));
}
return retval;
}
private:
QDBusError m_error;
Type m_data;
};
# ifndef Q_QDOC
// specialize for void:
template<>
class QDBUS_EXPORT QDBusReply<void>
{
public:
inline QDBusReply(const QDBusMessage &reply)
: m_error(reply)
{
}
inline QDBusReply(const QDBusError &dbusError)
: m_error(dbusError)
{
}
inline bool isError() const { return m_error.isValid(); }
inline bool isSuccess() const { return !m_error.isValid(); }
inline const QDBusError& error() { return m_error; }
private:
QDBusError m_error;
};
# endif
#endif
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