diff options
Diffstat (limited to 'src/model/devices/battery.py')
-rw-r--r-- | src/model/devices/battery.py | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/model/devices/battery.py b/src/model/devices/battery.py new file mode 100644 index 0000000..853d00e --- /dev/null +++ b/src/model/devices/battery.py @@ -0,0 +1,96 @@ +# Copyright (C) 2006-2007, Red Hat, Inc. +# +# 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 + +import logging + +import gobject +import dbus + +from model.devices import device + +_LEVEL_PROP = 'battery.charge_level.percentage' +_CHARGING_PROP = 'battery.rechargeable.is_charging' +_DISCHARGING_PROP = 'battery.rechargeable.is_discharging' + +class Device(device.Device): + __gproperties__ = { + 'level' : (int, None, None, 0, 100, 0, + gobject.PARAM_READABLE), + 'charging' : (bool, None, None, False, + gobject.PARAM_READABLE), + 'discharging' : (bool, None, None, False, + gobject.PARAM_READABLE) + } + + def __init__(self, udi): + device.Device.__init__(self, udi) + + bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM) + proxy = bus.get_object('org.freedesktop.Hal', udi) + self._battery = dbus.Interface(proxy, 'org.freedesktop.Hal.Device') + bus.add_signal_receiver(self._battery_changed, + 'PropertyModified', + 'org.freedesktop.Hal.Device', + 'org.freedesktop.Hal', + udi) + + self._level = self._get_level() + self._charging = self._get_charging() + self._discharging = self._get_discharging() + + def _get_level(self): + try: + return self._battery.GetProperty(_LEVEL_PROP) + except dbus.DBusException: + logging.error('Cannot access %s' % _LEVEL_PROP) + return 0 + + def _get_charging(self): + try: + return self._battery.GetProperty(_CHARGING_PROP) + except dbus.DBusException: + logging.error('Cannot access %s' % _CHARGING_PROP) + return False + + def _get_discharging(self): + try: + return self._battery.GetProperty(_DISCHARGING_PROP) + except dbus.DBusException: + logging.error('Cannot access %s' % _DISCHARGING_PROP) + return False + + def do_get_property(self, pspec): + if pspec.name == 'level': + return self._level + if pspec.name == 'charging': + return self._charging + if pspec.name == 'discharging': + return self._discharging + + def get_type(self): + return 'battery' + + def _battery_changed(self, num_changes, changes_list): + for change in changes_list: + if change[0] == _LEVEL_PROP: + self._level = self._get_level() + self.notify('level') + elif change[0] == _CHARGING_PROP: + self._charging = self._get_charging() + self.notify('charging') + elif change[0] == _DISCHARGING_PROP: + self._discharging = self._get_discharging() + self.notify('discharging') |