#!/usr/bin/env python


#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
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##   * Redistributions in binary form must reproduce the above copyright
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##     the documentation and/or other materials provided with the
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#############################################################################


import sys

from PyQt5.QtCore import pyqtSlot, QCoreApplication, QMetaObject, QObject
from PyQt5.QtDBus import QDBusConnection


class Pong(QObject):

    @pyqtSlot(str, result=str)
    def ping(self, arg):
        QMetaObject.invokeMethod(QCoreApplication.instance(), 'quit')

        return "ping(\"%s\") got called" % arg


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)

    if not QDBusConnection.sessionBus().registerService('org.example.QtDBus.PingExample'):
        sys.stderr.write("%s\n" % QDBusConnection.sessionBus().lastError().message())
        sys.exit(1)

    pong = Pong()
    QDBusConnection.sessionBus().registerObject('/', pong,
            QDBusConnection.ExportAllSlots)

    sys.exit(app.exec_())