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# Copyright (C) 2008 One Laptop Per Child
#
# This program 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; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
from gettext import gettext as _
import gconf
import dbus
import os
import logging
OHM_SERVICE_NAME = 'org.freedesktop.ohm'
OHM_SERVICE_PATH = '/org/freedesktop/ohm/Keystore'
OHM_SERVICE_IFACE = 'org.freedesktop.ohm.Keystore'
POWERD_FLAG_DIR = '/etc/powerd/flags'
POWERD_INHIBIT_FLAG = '/etc/powerd/flags/inhibit-suspend'
_logger = logging.getLogger('ControlPanel - Power')
class ReadError(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value)
def using_powerd():
# directory exists if powerd running, and it's recent
# enough to be controllable.
return os.access(POWERD_FLAG_DIR, os.W_OK)
def get_automatic_pm():
if using_powerd():
return not os.access(POWERD_INHIBIT_FLAG, os.R_OK)
# ohmd
client = gconf.client_get_default()
return client.get_bool('/desktop/sugar/power/automatic')
def print_automatic_pm():
print ('off', 'on')[get_automatic_pm()]
def set_automatic_pm(enabled):
"""Automatic suspends on/off."""
if using_powerd():
# powerd
if not os.access(POWERD_INHIBIT_FLAG, os.W_OK):
_logger.debug('File %s is not writeable' % POWERD_INHIBIT_FLAG)
return 0
if enabled == 'off' or enabled == 0:
fd = open(POWERD_INHIBIT_FLAG, 'w')
fd.close()
else:
os.unlink(POWERD_INHIBIT_FLAG)
return 0
# ohmd
bus = dbus.SystemBus()
proxy = bus.get_object(OHM_SERVICE_NAME, OHM_SERVICE_PATH)
keystore = dbus.Interface(proxy, OHM_SERVICE_IFACE)
if enabled == 'on' or enabled == 1:
keystore.SetKey("suspend.automatic_pm", 1)
enabled = True
elif enabled == 'off' or enabled == 0:
keystore.SetKey("suspend.automatic_pm", 0)
enabled = False
else:
raise ValueError(_("Error in automatic pm argument, use on/off."))
client = gconf.client_get_default()
client.set_bool('/desktop/sugar/power/automatic', enabled)
return 0
def get_extreme_pm():
client = gconf.client_get_default()
return client.get_bool('/desktop/sugar/power/extreme')
def print_extreme_pm():
print ('off', 'on')[get_extreme_pm()]
def set_extreme_pm(enabled):
"""Extreme power management on/off."""
bus = dbus.SystemBus()
proxy = bus.get_object(OHM_SERVICE_NAME, OHM_SERVICE_PATH)
keystore = dbus.Interface(proxy, OHM_SERVICE_IFACE)
if enabled == 'on' or enabled == 1:
keystore.SetKey("suspend.extreme_pm", 1)
enabled = True
elif enabled == 'off' or enabled == 0:
keystore.SetKey("suspend.extreme_pm", 0)
enabled = False
else:
raise ValueError(_("Error in extreme pm argument, use on/off."))
client = gconf.client_get_default()
client.set_bool('/desktop/sugar/power/extreme', enabled)
return 0
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