hass-core/homeassistant/helpers/selector.py

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"""Selectors for Home Assistant."""
from typing import Any, Callable, Dict, cast
import voluptuous as vol
from homeassistant.util import decorator
SELECTORS = decorator.Registry()
def validate_selector(config: Any) -> Dict:
"""Validate a selector."""
if not isinstance(config, dict):
raise vol.Invalid("Expected a dictionary")
if len(config) != 1:
raise vol.Invalid(f"Only one type can be specified. Found {', '.join(config)}")
selector_type = list(config)[0]
seslector_class = SELECTORS.get(selector_type)
if seslector_class is None:
raise vol.Invalid(f"Unknown selector type {selector_type} found")
return cast(Dict, seslector_class.CONFIG_SCHEMA(config[selector_type]))
class Selector:
"""Base class for selectors."""
CONFIG_SCHEMA: Callable
@SELECTORS.register("entity")
class EntitySelector(Selector):
"""Selector of a single entity."""
CONFIG_SCHEMA = vol.Schema(
{
vol.Optional("integration"): str,
vol.Optional("domain"): str,
}
)
@SELECTORS.register("device")
class DeviceSelector(Selector):
"""Selector of a single device."""
CONFIG_SCHEMA = vol.Schema(
{
vol.Optional("integration"): str,
vol.Optional("manufacturer"): str,
vol.Optional("model"): str,
}
)