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mirror of https://github.com/home-assistant/core synced 2024-08-02 23:40:32 +02:00
ha-core/homeassistant/components/knx/select.py
2021-12-03 09:29:38 -08:00

108 lines
3.6 KiB
Python

"""Support for KNX/IP select entities."""
from __future__ import annotations
from xknx import XKNX
from xknx.devices import Device as XknxDevice, RawValue
from homeassistant import config_entries
from homeassistant.components.select import SelectEntity
from homeassistant.const import (
CONF_ENTITY_CATEGORY,
CONF_NAME,
STATE_UNAVAILABLE,
STATE_UNKNOWN,
Platform,
)
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.restore_state import RestoreEntity
from homeassistant.helpers.typing import ConfigType
from .const import (
CONF_PAYLOAD,
CONF_PAYLOAD_LENGTH,
CONF_RESPOND_TO_READ,
CONF_STATE_ADDRESS,
CONF_SYNC_STATE,
DATA_KNX_CONFIG,
DOMAIN,
KNX_ADDRESS,
)
from .knx_entity import KnxEntity
from .schema import SelectSchema
async def async_setup_entry(
hass: HomeAssistant,
config_entry: config_entries.ConfigEntry,
async_add_entities: AddEntitiesCallback,
) -> None:
"""Set up select(s) for KNX platform."""
xknx: XKNX = hass.data[DOMAIN].xknx
config: list[ConfigType] = hass.data[DATA_KNX_CONFIG][Platform.SELECT]
async_add_entities(KNXSelect(xknx, entity_config) for entity_config in config)
def _create_raw_value(xknx: XKNX, config: ConfigType) -> RawValue:
"""Return a KNX RawValue to be used within XKNX."""
return RawValue(
xknx,
name=config[CONF_NAME],
payload_length=config[CONF_PAYLOAD_LENGTH],
group_address=config[KNX_ADDRESS],
group_address_state=config.get(CONF_STATE_ADDRESS),
respond_to_read=config[CONF_RESPOND_TO_READ],
sync_state=config[CONF_SYNC_STATE],
)
class KNXSelect(KnxEntity, SelectEntity, RestoreEntity):
"""Representation of a KNX select."""
_device: RawValue
def __init__(self, xknx: XKNX, config: ConfigType) -> None:
"""Initialize a KNX select."""
super().__init__(_create_raw_value(xknx, config))
self._option_payloads: dict[str, int] = {
option[SelectSchema.CONF_OPTION]: option[CONF_PAYLOAD]
for option in config[SelectSchema.CONF_OPTIONS]
}
self._attr_options = list(self._option_payloads)
self._attr_current_option = None
self._attr_entity_category = config.get(CONF_ENTITY_CATEGORY)
self._attr_unique_id = str(self._device.remote_value.group_address)
async def async_added_to_hass(self) -> None:
"""Restore last state."""
await super().async_added_to_hass()
if not self._device.remote_value.readable and (
last_state := await self.async_get_last_state()
):
if last_state.state not in (STATE_UNKNOWN, STATE_UNAVAILABLE):
await self._device.remote_value.update_value(
self._option_payloads.get(last_state.state)
)
async def after_update_callback(self, device: XknxDevice) -> None:
"""Call after device was updated."""
self._attr_current_option = self.option_from_payload(
self._device.remote_value.value
)
await super().after_update_callback(device)
def option_from_payload(self, payload: int | None) -> str | None:
"""Return the option a given payload is assigned to."""
try:
return next(
key for key, value in self._option_payloads.items() if value == payload
)
except StopIteration:
return None
async def async_select_option(self, option: str) -> None:
"""Change the selected option."""
payload = self._option_payloads[option]
await self._device.set(payload)