#!/usr/bin/env python
#
# Test fast-user-switch functionality
#

import os
import sys
import gobject
import dbus
import dbus.glib

def activate_reply (res):
    print "session activated"

def activate_error (e):
    print str (e)

def session_added_cb (ssid):
    print "Session added: %s" % ssid

def session_removed_cb (ssid):
    print "Session removed: %s" % ssid

def active_session_changed_cb (ssid):
    print "Active session changed: %s" % ssid

bus = dbus.SystemBus ()

manager_obj = bus.get_object ('org.freedesktop.ConsoleKit', '/org/freedesktop/ConsoleKit/Manager')

manager = dbus.Interface (manager_obj, 'org.freedesktop.ConsoleKit.Manager')

current_ssid = manager.GetCurrentSession ()
current_session_obj = bus.get_object ('org.freedesktop.ConsoleKit', current_ssid)
current_session = dbus.Interface (current_session_obj, 'org.freedesktop.ConsoleKit.Session')

sid = current_session.GetSeatId ()
if not sid:
    print "Current session is not attached to a seat, no switching possible"
    sys.exit ()

seat_obj = bus.get_object ('org.freedesktop.ConsoleKit', sid)
seat = dbus.Interface (seat_obj, 'org.freedesktop.ConsoleKit.Seat')
seat.connect_to_signal ('SessionAdded', session_added_cb)
seat.connect_to_signal ('SessionRemoved', session_removed_cb)
seat.connect_to_signal ('ActiveSessionChanged', active_session_changed_cb)

can_fus = seat.CanActivateSessions()
if can_fus:
    print "The current seat supports session switching"
else:
    print "The current seat does not support session switching"

# Show a list of sessions on the current seat
sessions = seat.GetSessions ()
for ssid in sessions:
    session_obj = bus.get_object ('org.freedesktop.ConsoleKit', ssid)
    session = dbus.Interface (session_obj, 'org.freedesktop.ConsoleKit.Session')
    uid = session.GetUser ()
    print "Session %s user=%u" % (ssid, uid)

# then pretend a session-ID is selected:
ssid = current_ssid
session_obj = bus.get_object ('org.freedesktop.ConsoleKit', ssid)
session = dbus.Interface (session_obj, 'org.freedesktop.ConsoleKit.Session')
session.Activate (reply_handler = activate_reply, error_handler = activate_error)

mainloop = gobject.MainLoop ()
mainloop.run()