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     2 **

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

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     7 ** This file is part of the examples of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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

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    38 ** $QT_END_LICENSE$

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

    41 

    42 #include <stdio.h>

    43 

    44 #include <QtCore/QCoreApplication>

    45 #include <QtCore/QFile>

    46 #include <QtCore/QDebug>

    47 #include <QtCore/QProcess>

    48 #include <QtDBus/QtDBus>

    49 

    50 #include "ping-common.h"

    51 #include "complexping.h"

    52 

    53 void Ping::start(const QString &name, const QString &oldValue, const QString &newValue)

    54 {

    55     Q_UNUSED(oldValue);

    56 

    57     if (name != SERVICE_NAME || newValue.isEmpty())

    58         return;

    59 

    60     // open stdin for reading

    61     qstdin.open(stdin, QIODevice::ReadOnly);

    62 

    63     // find our remote

    64     iface = new QDBusInterface(SERVICE_NAME, "/", "com.trolltech.QtDBus.ComplexPong.Pong",

    65                                QDBusConnection::sessionBus(), this);

    66     if (!iface->isValid()) {

    67         fprintf(stderr, "%s\n",

    68                 qPrintable(QDBusConnection::sessionBus().lastError().message()));

    69         QCoreApplication::instance()->quit();

    70     }

    71 

    72     connect(iface, SIGNAL(aboutToQuit()), QCoreApplication::instance(), SLOT(quit()));

    73 

    74     while (true) {

    75         printf("Ask your question: ");

    76 

    77         QString line = QString::fromLocal8Bit(qstdin.readLine()).trimmed();

    78         if (line.isEmpty()) {

    79             iface->call("quit");

    80             return;

    81         } else if (line == "value") {

    82             QVariant reply = iface->property("value");

    83             if (!reply.isNull())

    84                 printf("value = %s\n", qPrintable(reply.toString()));

    85         } else if (line.startsWith("value=")) {

    86             iface->setProperty("value", line.mid(6));            

    87         } else {

    88             QDBusReply<QDBusVariant> reply = iface->call("query", line);

    89             if (reply.isValid())

    90                 printf("Reply was: %s\n", qPrintable(reply.value().variant().toString()));

    91         }

    92 

    93         if (iface->lastError().isValid())

    94             fprintf(stderr, "Call failed: %s\n", qPrintable(iface->lastError().message()));

    95     }

    96 }    

    97 

    98 int main(int argc, char **argv)

    99 {

   100     QCoreApplication app(argc, argv);

   101 

   102     if (!QDBusConnection::sessionBus().isConnected()) {

   103         fprintf(stderr, "Cannot connect to the D-Bus session bus.\n"

   104                 "To start it, run:\n"

   105                 "\teval `dbus-launch --auto-syntax`\n");

   106         return 1;

   107     }

   108 

   109     Ping ping;

   110     ping.connect(QDBusConnection::sessionBus().interface(),

   111                  SIGNAL(serviceOwnerChanged(QString,QString,QString)),

   112                  SLOT(start(QString,QString,QString)));

   113 

   114     QProcess pong;

   115     pong.start("./complexpong");

   116 

   117     app.exec();

   118 }