mirror of
https://github.com/home-assistant/core.git
synced 2026-04-02 08:26:41 +01:00
44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
"""Provides triggers for scenes."""
|
|
|
|
from homeassistant.const import STATE_UNAVAILABLE, STATE_UNKNOWN
|
|
from homeassistant.core import HomeAssistant, State
|
|
from homeassistant.helpers.automation import DomainSpec
|
|
from homeassistant.helpers.trigger import (
|
|
ENTITY_STATE_TRIGGER_SCHEMA,
|
|
EntityTriggerBase,
|
|
Trigger,
|
|
)
|
|
|
|
from . import DOMAIN
|
|
|
|
|
|
class SceneActivatedTrigger(EntityTriggerBase):
|
|
"""Trigger for scene entity activations."""
|
|
|
|
_domain_specs = {DOMAIN: DomainSpec()}
|
|
_schema = ENTITY_STATE_TRIGGER_SCHEMA
|
|
|
|
def is_valid_transition(self, from_state: State, to_state: State) -> bool:
|
|
"""Check if the origin state is valid and different from the current state."""
|
|
|
|
# UNKNOWN is a valid from_state, otherwise the first time the scene is activated
|
|
# it would not trigger
|
|
if from_state.state == STATE_UNAVAILABLE:
|
|
return False
|
|
|
|
return from_state.state != to_state.state
|
|
|
|
def is_valid_state(self, state: State) -> bool:
|
|
"""Check if the new state is not invalid."""
|
|
return state.state not in (STATE_UNAVAILABLE, STATE_UNKNOWN)
|
|
|
|
|
|
TRIGGERS: dict[str, type[Trigger]] = {
|
|
"activated": SceneActivatedTrigger,
|
|
}
|
|
|
|
|
|
async def async_get_triggers(hass: HomeAssistant) -> dict[str, type[Trigger]]:
|
|
"""Return the triggers for scenes."""
|
|
return TRIGGERS
|