import gobject from model.devices import device class Device(device.Device): __gproperties__ = { 'level' : (int, None, None, 0, 100, 0, gobject.PARAM_READABLE) } def __init__(self): device.Device.__init__(self) self._level = 0 self._timeout_id = gobject.timeout_add(2000, self._check_battery_level) def do_get_property(self, pspec): if pspec.name == 'level': return self._level def get_type(self): return 'battery' def _check_battery_level(self): new_level = self._get_battery_level() if new_level != self._level: self._level = new_level self.notify('level') return True def _get_battery_level(self): battery_class_path = '/sys/class/battery/psu_0/' capacity_path = battery_class_path + 'capacity_percentage' try: f = open(capacity_path, 'r') val = f.read().split('\n') level = int(val[0]) f.close() except: level = 0 return level def __del__(self): gobject.source_remove(self._timeout_id) self._timeout_id = 0