~dobey/changeup/trunk

# -*- coding: utf-8 -*-

#

# Author: Rodney Dawes <rodney.dawes@canonical.com>

#

# Copyright 2009 Canonical Ltd.

#

# This program is free software: you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 3, as published

# by the Free Software Foundation.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranties of

# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR

# PURPOSE.  See the GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License along

# with this program.  If not, see <http://www.gnu.org/licenses/>.

import dbus

CHANGEUP_BUS_NAME = 'org.freedesktop.ChangeUp'

def register_restart_handler(appname, handler):

    """Register a restart handler for ChangeUp."""

    def restart_handler(app):

        if app == appname:

            handler()

    bus = dbus.SystemBus()

    bus.add_signal_receiver(handler_function=restart_handler,

                            signal_name='RestartDispatched',

                            dbus_interface=CHANGEUP_BUS_NAME)