listnames.py

#!/usr/bin/env python


#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
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## This file is part of the examples of PyQt.
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#############################################################################


import sys

from PyQt5.QtCore import QCoreApplication
from PyQt5.QtDBus import QDBusConnection, QDBusInterface


def method1():
    sys.stdout.write("Method 1:\n")

    reply = QDBusConnection.sessionBus().interface().registeredServiceNames()
    if not reply.isValid():
        sys.stdout.write("Error: %s\n" % reply.error().message())
        sys.exit(1)

    # Mimic the output from the C++ version.
    for name in reply.value():
        sys.stdout.write('"%s"\n' % name)


def method2():
    sys.stdout.write("Method 2:\n")

    bus = QDBusConnection.sessionBus()
    dbus_iface = QDBusInterface('org.freedesktop.DBus',
            '/org/freedesktop/DBus', 'org.freedesktop.DBus', bus)
    names = dbus_iface.call('ListNames').arguments()[0]

    # Mimic the output from the C++ version.
    sys.stdout.write('QVariant(QStringList, ("%s") )\n' % '", "'.join(names))


def method3():
    sys.stdout.write("Method 3:\n")

    names = QDBusConnection.sessionBus().interface().registeredServiceNames().value()

    # Mimic the output from the C++ version.
    sys.stdout.write('("%s")\n' % '", "'.join(names))


if __name__ == '__main__':
    app = QCoreApplication(sys.argv)

    if not QDBusConnection.sessionBus().isConnected():
        sys.stderr.write("Cannot connect to the D-Bus session bus.\n"
                "To start it, run:\n"
                "\teval `dbus-launch --auto-syntax`\n");
        sys.exit(1)

    method1()
    method2()
    method3()

    sys.exit()