1 /****************************************************************************

     2 **

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

     4 ** All rights reserved.

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

     6 **

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

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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

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

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

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

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

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef QDBUSREPLY_H

    43 #define QDBUSREPLY_H

    44 

    45 #include <QtCore/qglobal.h>

    46 #include <QtCore/qvariant.h>

    47 

    48 #include <QtDBus/qdbusmacros.h>

    49 #include <QtDBus/qdbusmessage.h>

    50 #include <QtDBus/qdbuserror.h>

    51 #include <QtDBus/qdbusextratypes.h>

    52 #include <QtDBus/qdbuspendingreply.h>

    53 

    54 QT_BEGIN_HEADER

    55 

    56 QT_BEGIN_NAMESPACE

    57 

    58 QT_MODULE(DBus)

    59 

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

    61 

    62 template<typename T>

    63 class QDBusReply

    64 {

    65     typedef T Type;

    66 public:

    67     inline QDBusReply(const QDBusMessage &reply)

    68     {

    69         *this = reply;

    70     }

    71     inline QDBusReply& operator=(const QDBusMessage &reply)

    72     {

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

    74         qDBusReplyFill(reply, m_error, data);

    75         m_data = qvariant_cast<Type>(data);

    76         return *this;

    77     }

    78 

    79     inline QDBusReply(const QDBusPendingCall &pcall)

    80     {

    81         *this = pcall;

    82     }

    83     inline QDBusReply &operator=(const QDBusPendingCall &pcall)

    84     {

    85         QDBusPendingCall other(pcall);

    86         other.waitForFinished();

    87         return *this = other.reply();

    88     }

    89     inline QDBusReply(const QDBusPendingReply<T> &reply)

    90     {

    91         *this = static_cast<QDBusPendingCall>(reply);

    92     }

    93 

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

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

    96     {

    97     }

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

    99     {

   100         m_error = dbusError;

   101         m_data = Type();

   102         return *this;

   103     }

   104 

   105     inline QDBusReply& operator=(const QDBusReply& other)

   106     {

   107         m_error = other.m_error;

   108         m_data = other.m_data;

   109         return *this;

   110     }

   111 

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

   113 

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

   115 

   116     inline Type value() const

   117     {

   118         return m_data;

   119     }

   120 

   121     inline operator Type () const

   122     {

   123         return m_data;

   124     }

   125 

   126 private:

   127     QDBusError m_error;

   128     Type m_data;

   129 };

   130 

   131 # ifndef Q_QDOC

   132 // specialize for QVariant:

   133 template<> inline QDBusReply<QVariant>&

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

   135 {

   136     void *null = 0;

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

   138     qDBusReplyFill(reply, m_error, data);

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

   140     return *this;

   141 }

   142 

   143 // specialize for void:

   144 template<>

   145 class QDBusReply<void>

   146 {

   147 public:

   148     inline QDBusReply(const QDBusMessage &reply)

   149         : m_error(reply)

   150     {

   151     }

   152     inline QDBusReply& operator=(const QDBusMessage &reply)

   153     {

   154         m_error = reply;

   155         return *this;

   156     }

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

   158         : m_error(dbusError)

   159     {

   160     }

   161     inline QDBusReply(const QDBusPendingCall &pcall)

   162     {

   163         *this = pcall;

   164     }

   165     inline QDBusReply &operator=(const QDBusPendingCall &pcall)

   166     {

   167         QDBusPendingCall other(pcall);

   168         other.waitForFinished();

   169         return *this = other.reply();

   170     }

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

   172     {

   173         m_error = dbusError;

   174         return *this;

   175     }

   176 

   177     inline QDBusReply& operator=(const QDBusReply& other)

   178     {

   179         m_error = other.m_error;

   180         return *this;

   181     }

   182 

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

   184 

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

   186 

   187 private:

   188     QDBusError m_error;

   189 };

   190 # endif

   191 

   192 QT_END_NAMESPACE

   193 

   194 QT_END_HEADER

   195 

   196 #endif