core/homeassistant/components/binary_sensor/deconz.py

98 lines
2.8 KiB
Python

"""
Support for deCONZ binary sensor.
For more details about this component, please refer to the documentation at
https://home-assistant.io/components/binary_sensor.deconz/
"""
import asyncio
from homeassistant.components.binary_sensor import BinarySensorDevice
from homeassistant.components.deconz import DOMAIN as DECONZ_DATA
from homeassistant.const import ATTR_BATTERY_LEVEL
from homeassistant.core import callback
DEPENDENCIES = ['deconz']
@asyncio.coroutine
def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
"""Set up the deCONZ binary sensor."""
if discovery_info is None:
return
from pydeconz.sensor import DECONZ_BINARY_SENSOR
sensors = hass.data[DECONZ_DATA].sensors
entities = []
for key in sorted(sensors.keys(), key=int):
sensor = sensors[key]
if sensor and sensor.type in DECONZ_BINARY_SENSOR:
entities.append(DeconzBinarySensor(sensor))
async_add_devices(entities, True)
class DeconzBinarySensor(BinarySensorDevice):
"""Representation of a binary sensor."""
def __init__(self, sensor):
"""Set up sensor and add update callback to get data from websocket."""
self._sensor = sensor
@asyncio.coroutine
def async_added_to_hass(self):
"""Subscribe sensors events."""
self._sensor.register_async_callback(self.async_update_callback)
@callback
def async_update_callback(self, reason):
"""Update the sensor's state.
If reason is that state is updated,
or reachable has changed or battery has changed.
"""
if reason['state'] or \
'reachable' in reason['attr'] or \
'battery' in reason['attr']:
self.async_schedule_update_ha_state()
@property
def is_on(self):
"""Return true if sensor is on."""
return self._sensor.is_tripped
@property
def name(self):
"""Return the name of the sensor."""
return self._sensor.name
@property
def device_class(self):
"""Return the class of the sensor."""
return self._sensor.sensor_class
@property
def icon(self):
"""Return the icon to use in the frontend."""
return self._sensor.sensor_icon
@property
def available(self):
"""Return True if sensor is available."""
return self._sensor.reachable
@property
def should_poll(self):
"""No polling needed."""
return False
@property
def device_state_attributes(self):
"""Return the state attributes of the sensor."""
from pydeconz.sensor import PRESENCE
attr = {
ATTR_BATTERY_LEVEL: self._sensor.battery,
}
if self._sensor.type == PRESENCE:
attr['dark'] = self._sensor.dark
return attr