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# -*- coding:utf-8 -*-
## src/common/dbus_support.py
##
## Copyright (C) 2005 Andrew Sayman <lorien420 AT myrealbox.com>
## Dimitur Kirov <dkirov AT gmail.com>
## Copyright (C) 2005-2006 Nikos Kouremenos <kourem AT gmail.com>
## Copyright (C) 2005-2007 Yann Leboulanger <asterix AT lagaule.org>
## Copyright (C) 2006 Jean-Marie Traissard <jim AT lapin.org>
## Stefan Bethge <stefan AT lanpartei.de>
## Copyright (C) 2008 Jonathan Schleifer <js-gajim AT webkeks.org>
##
## This file is part of Gajim.
##
## Gajim is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 3 only.
##
## Gajim is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
##
import os, sys
from common import gajim
from common import exceptions
_GAJIM_ERROR_IFACE = 'org.gajim.dbus.Error'
try:
import dbus
import dbus.glib
# test if dbus-x11 is installed
bus = dbus.SessionBus()
supported = True # does user have D-Bus bindings?
except ImportError:
supported = False
if not os.name == 'nt': # only say that to non Windows users
print _('D-Bus python bindings are missing in this computer')
print _('D-Bus capabilities of Gajim cannot be used')
class SystemBus:
'''A Singleton for the DBus SystemBus'''
def __init__(self):
self.system_bus = None
def SystemBus(self):
if not supported:
raise exceptions.DbusNotSupported
if not self.present():
raise exceptions.SystemBusNotPresent
return self.system_bus
def bus(self):
return self.SystemBus()
def present(self):
if not supported:
return False
if self.system_bus is None:
try:
self.system_bus = dbus.SystemBus()
except dbus.DBusException:
self.system_bus = None
return False
if self.system_bus is None:
return False
# Don't exit Gajim when dbus is stopped
self.system_bus.set_exit_on_disconnect(False)
return True
system_bus = SystemBus()
class SessionBus:
'''A Singleton for the D-Bus SessionBus'''
def __init__(self):
self.session_bus = None
def SessionBus(self):
if not supported:
raise exceptions.DbusNotSupported
if not self.present():
raise exceptions.SessionBusNotPresent
return self.session_bus
def bus(self):
return self.SessionBus()
def present(self):
if not supported:
return False
if self.session_bus is None:
try:
self.session_bus = dbus.SessionBus()
except dbus.DBusException:
self.session_bus = None
return False
if self.session_bus is None:
return False
return True
session_bus = SessionBus()
def get_interface(interface, path, start_service=True):
'''Returns an interface on the current SessionBus. If the interface isn\'t
running, it tries to start it first.'''
if not supported:
return None
if session_bus.present():
bus = session_bus.SessionBus()
else:
return None
try:
obj = bus.get_object('org.freedesktop.DBus', '/org/freedesktop/DBus')
dbus_iface = dbus.Interface(obj, 'org.freedesktop.DBus')
running_services = dbus_iface.ListNames()
started = True
if interface not in running_services:
# try to start the service
if start_service and dbus_iface.StartServiceByName(interface, dbus.UInt32(0)) == 1:
started = True
else:
started = False
if not started:
return None
obj = bus.get_object(interface, path)
return dbus.Interface(obj, interface)
except Exception, e:
gajim.log.debug(str(e))
return None
def get_notifications_interface(notif=None):
'''Returns the notifications interface.
:param notif: DesktopNotification instance'''
# try to see if KDE notifications are available
iface = get_interface('org.kde.VisualNotifications', '/VisualNotifications',
start_service=False)
if iface != None:
if notif != None:
notif.kde_notifications = True
return iface
# KDE notifications don't seem to be available, falling back to
# notification-daemon
else:
if notif != None:
notif.kde_notifications = False
return get_interface('org.freedesktop.Notifications',
'/org/freedesktop/Notifications')
if supported:
class MissingArgument(dbus.DBusException):
_dbus_error_name = _GAJIM_ERROR_IFACE + '.MissingArgument'
class InvalidArgument(dbus.DBusException):
'''Raised when one of the provided arguments is invalid.'''
_dbus_error_name = _GAJIM_ERROR_IFACE + '.InvalidArgument'
# vim: se ts=3:
|
