/**************************************************************************** | |
** | |
** Copyright (C) 2011 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. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** 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. | |
** | |
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** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#ifndef QDBUSPENDINGREPLY_H | |
#define QDBUSPENDINGREPLY_H | |
#include <QtCore/qglobal.h> | |
#include <QtDBus/qdbusmacros.h> | |
#include <QtDBus/qdbusargument.h> | |
#include <QtDBus/qdbuspendingcall.h> | |
#ifndef QT_NO_DBUS | |
QT_BEGIN_HEADER | |
QT_BEGIN_NAMESPACE | |
QT_MODULE(DBus) | |
class Q_DBUS_EXPORT QDBusPendingReplyData: public QDBusPendingCall | |
{ | |
protected: | |
QDBusPendingReplyData(); | |
~QDBusPendingReplyData(); | |
void assign(const QDBusPendingCall &call); | |
void assign(const QDBusMessage &message); | |
QVariant argumentAt(int index) const; | |
void setMetaTypes(int count, const int *metaTypes); | |
}; | |
namespace QDBusPendingReplyTypes { | |
template<int Index, | |
typename T1, typename T2, typename T3, typename T4, | |
typename T5, typename T6, typename T7, typename T8> | |
struct Select | |
{ | |
typedef Select<Index - 1, T2, T3, T4, T5, T6, T7, T8, void> Next; | |
typedef typename Next::Type Type; | |
}; | |
template<typename T1, typename T2, typename T3, typename T4, | |
typename T5, typename T6, typename T7, typename T8> | |
struct Select<0, T1, T2, T3, T4, T5, T6, T7, T8> | |
{ | |
typedef T1 Type; | |
}; | |
template<typename T1> inline int metaTypeFor(T1 * = 0) | |
{ return qMetaTypeId<T1>(); } | |
// specialize for QVariant, allowing it to be used in place of QDBusVariant | |
template<> inline int metaTypeFor<QVariant>(QVariant *) | |
{ return qMetaTypeId<QDBusVariant>(); } | |
template<typename T1, typename T2, typename T3, typename T4, | |
typename T5, typename T6, typename T7, typename T8> | |
struct ForEach | |
{ | |
typedef ForEach<T2, T3, T4, T5, T6, T7, T8, void> Next; | |
enum { Total = Next::Total + 1 }; | |
static inline void fillMetaTypes(int *p) | |
{ | |
*p = metaTypeFor<T1>(0); | |
Next::fillMetaTypes(++p); | |
} | |
}; | |
template<> | |
struct ForEach<void, void, void, void, void, void, void, void> | |
{ | |
enum { Total = 0 }; | |
static inline void fillMetaTypes(int *) | |
{ } | |
}; | |
} // namespace QDBusPendingReplyTypes | |
template<typename T1 = void, typename T2 = void, typename T3 = void, typename T4 = void, | |
typename T5 = void, typename T6 = void, typename T7 = void, typename T8 = void> | |
class QDBusPendingReply: | |
#ifdef Q_QDOC | |
public QDBusPendingCall | |
#else | |
public QDBusPendingReplyData | |
#endif | |
{ | |
typedef QDBusPendingReplyTypes::ForEach<T1, T2, T3, T4, T5, T6, T7, T8> ForEach; | |
template<int Index> struct Select : | |
QDBusPendingReplyTypes::Select<Index, T1, T2, T3, T4, T5, T6, T7, T8> | |
{ | |
}; | |
public: | |
enum { Count = ForEach::Total }; | |
inline QDBusPendingReply() | |
{ } | |
inline QDBusPendingReply(const QDBusPendingReply &other) | |
: QDBusPendingReplyData(other) | |
{ } | |
inline QDBusPendingReply(const QDBusPendingCall &call) | |
{ *this = call; } | |
inline QDBusPendingReply(const QDBusMessage &message) | |
{ *this = message; } | |
inline QDBusPendingReply &operator=(const QDBusPendingReply &other) | |
{ assign(other); return *this; } | |
inline QDBusPendingReply &operator=(const QDBusPendingCall &call) | |
{ assign(call); return *this; } | |
inline QDBusPendingReply &operator=(const QDBusMessage &message) | |
{ assign(message); return *this; } | |
inline int count() const { return Count; } | |
#if defined(Q_QDOC) || defined(Q_NO_USING_KEYWORD) | |
inline QVariant argumentAt(int index) const | |
{ return QDBusPendingReplyData::argumentAt(index); } | |
#else | |
using QDBusPendingReplyData::argumentAt; | |
#endif | |
#if defined(Q_QDOC) | |
bool isFinished() const; | |
void waitForFinished(); | |
bool isValid() const; | |
bool isError() const; | |
QDBusError error() const; | |
QDBusMessage reply() const; | |
template<int Index> inline Type argumentAt() const; | |
inline T1 value() const; | |
inline operator T1() const; | |
#else | |
template<int Index> inline | |
const typename Select<Index>::Type argumentAt() const | |
{ | |
// static assert? | |
Q_ASSERT_X(Index < count() && Index >= 0, "QDBusPendingReply::argumentAt", | |
"Index out of bounds"); | |
typedef typename Select<Index>::Type ResultType; | |
return qdbus_cast<ResultType>(argumentAt(Index), 0); | |
} | |
inline typename Select<0>::Type value() const | |
{ | |
return argumentAt<0>(); | |
} | |
inline operator typename Select<0>::Type() const | |
{ | |
return argumentAt<0>(); | |
} | |
#endif | |
private: | |
inline void calculateMetaTypes() | |
{ | |
if (!d) return; | |
int typeIds[Count > 0 ? Count : 1]; // use at least one since zero-sized arrays aren't valid | |
ForEach::fillMetaTypes(typeIds); | |
setMetaTypes(Count, typeIds); | |
} | |
inline void assign(const QDBusPendingCall &call) | |
{ | |
QDBusPendingReplyData::assign(call); | |
calculateMetaTypes(); | |
} | |
inline void assign(const QDBusMessage &message) | |
{ | |
QDBusPendingReplyData::assign(message); | |
calculateMetaTypes(); | |
} | |
}; | |
QT_END_NAMESPACE | |
QT_END_HEADER | |
#endif // QT_NO_DBUS | |
#endif |