core/homeassistant/components/input_number.py

272 lines
8.1 KiB
Python

"""
Component to offer a way to set a numeric value from a slider or text box.
For more details about this component, please refer to the documentation
at https://home-assistant.io/components/input_number/
"""
import asyncio
import logging
import voluptuous as vol
import homeassistant.helpers.config_validation as cv
from homeassistant.const import (
ATTR_ENTITY_ID, ATTR_UNIT_OF_MEASUREMENT, CONF_ICON, CONF_NAME, CONF_MODE)
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.entity_component import EntityComponent
from homeassistant.helpers.restore_state import async_get_last_state
from homeassistant.loader import bind_hass
_LOGGER = logging.getLogger(__name__)
DOMAIN = 'input_number'
ENTITY_ID_FORMAT = DOMAIN + '.{}'
CONF_INITIAL = 'initial'
CONF_MIN = 'min'
CONF_MAX = 'max'
CONF_STEP = 'step'
MODE_SLIDER = 'slider'
MODE_BOX = 'box'
ATTR_VALUE = 'value'
ATTR_MIN = 'min'
ATTR_MAX = 'max'
ATTR_STEP = 'step'
ATTR_MODE = 'mode'
SERVICE_SET_VALUE = 'set_value'
SERVICE_INCREMENT = 'increment'
SERVICE_DECREMENT = 'decrement'
SERVICE_DEFAULT_SCHEMA = vol.Schema({
vol.Optional(ATTR_ENTITY_ID): cv.entity_ids
})
SERVICE_SET_VALUE_SCHEMA = vol.Schema({
vol.Optional(ATTR_ENTITY_ID): cv.entity_ids,
vol.Required(ATTR_VALUE): vol.Coerce(float),
})
def _cv_input_number(cfg):
"""Configure validation helper for input number (voluptuous)."""
minimum = cfg.get(CONF_MIN)
maximum = cfg.get(CONF_MAX)
if minimum >= maximum:
raise vol.Invalid('Maximum ({}) is not greater than minimum ({})'
.format(minimum, maximum))
state = cfg.get(CONF_INITIAL)
if state is not None and (state < minimum or state > maximum):
raise vol.Invalid('Initial value {} not in range {}-{}'
.format(state, minimum, maximum))
return cfg
CONFIG_SCHEMA = vol.Schema({
DOMAIN: vol.Schema({
cv.slug: vol.All({
vol.Optional(CONF_NAME): cv.string,
vol.Required(CONF_MIN): vol.Coerce(float),
vol.Required(CONF_MAX): vol.Coerce(float),
vol.Optional(CONF_INITIAL): vol.Coerce(float),
vol.Optional(CONF_STEP, default=1):
vol.All(vol.Coerce(float), vol.Range(min=1e-3)),
vol.Optional(CONF_ICON): cv.icon,
vol.Optional(ATTR_UNIT_OF_MEASUREMENT): cv.string,
vol.Optional(CONF_MODE, default=MODE_SLIDER):
vol.In([MODE_BOX, MODE_SLIDER]),
}, _cv_input_number)
})
}, required=True, extra=vol.ALLOW_EXTRA)
SERVICE_TO_METHOD = {
SERVICE_SET_VALUE: {
'method': 'async_set_value',
'schema': SERVICE_SET_VALUE_SCHEMA},
SERVICE_INCREMENT: {
'method': 'async_increment',
'schema': SERVICE_DEFAULT_SCHEMA},
SERVICE_DECREMENT: {
'method': 'async_decrement',
'schema': SERVICE_DEFAULT_SCHEMA},
}
@bind_hass
def set_value(hass, entity_id, value):
"""Set input_number to value."""
hass.services.call(DOMAIN, SERVICE_SET_VALUE, {
ATTR_ENTITY_ID: entity_id,
ATTR_VALUE: value,
})
@bind_hass
def increment(hass, entity_id):
"""Increment value of entity."""
hass.services.call(DOMAIN, SERVICE_INCREMENT, {
ATTR_ENTITY_ID: entity_id
})
@bind_hass
def decrement(hass, entity_id):
"""Decrement value of entity."""
hass.services.call(DOMAIN, SERVICE_DECREMENT, {
ATTR_ENTITY_ID: entity_id
})
@asyncio.coroutine
def async_setup(hass, config):
"""Set up an input slider."""
component = EntityComponent(_LOGGER, DOMAIN, hass)
entities = []
for object_id, cfg in config[DOMAIN].items():
name = cfg.get(CONF_NAME)
minimum = cfg.get(CONF_MIN)
maximum = cfg.get(CONF_MAX)
initial = cfg.get(CONF_INITIAL)
step = cfg.get(CONF_STEP)
icon = cfg.get(CONF_ICON)
unit = cfg.get(ATTR_UNIT_OF_MEASUREMENT)
mode = cfg.get(CONF_MODE)
entities.append(InputNumber(
object_id, name, initial, minimum, maximum, step, icon, unit,
mode))
if not entities:
return False
@asyncio.coroutine
def async_handle_service(service):
"""Handle calls to input_number services."""
target_inputs = component.async_extract_from_service(service)
method = SERVICE_TO_METHOD.get(service.service)
params = service.data.copy()
params.pop(ATTR_ENTITY_ID, None)
# call method
update_tasks = []
for target_input in target_inputs:
yield from getattr(target_input, method['method'])(**params)
if not target_input.should_poll:
continue
update_tasks.append(target_input.async_update_ha_state(True))
if update_tasks:
yield from asyncio.wait(update_tasks, loop=hass.loop)
for service, data in SERVICE_TO_METHOD.items():
hass.services.async_register(
DOMAIN, service, async_handle_service, schema=data['schema'])
yield from component.async_add_entities(entities)
return True
class InputNumber(Entity):
"""Representation of a slider."""
def __init__(self, object_id, name, initial, minimum, maximum, step, icon,
unit, mode):
"""Initialize an input number."""
self.entity_id = ENTITY_ID_FORMAT.format(object_id)
self._name = name
self._current_value = initial
self._minimum = minimum
self._maximum = maximum
self._step = step
self._icon = icon
self._unit = unit
self._mode = mode
@property
def should_poll(self):
"""If entity should be polled."""
return False
@property
def name(self):
"""Return the name of the input slider."""
return self._name
@property
def icon(self):
"""Return the icon to be used for this entity."""
return self._icon
@property
def state(self):
"""Return the state of the component."""
return self._current_value
@property
def unit_of_measurement(self):
"""Return the unit the value is expressed in."""
return self._unit
@property
def state_attributes(self):
"""Return the state attributes."""
return {
ATTR_MIN: self._minimum,
ATTR_MAX: self._maximum,
ATTR_STEP: self._step,
ATTR_MODE: self._mode,
}
@asyncio.coroutine
def async_added_to_hass(self):
"""Run when entity about to be added to hass."""
if self._current_value is not None:
return
state = yield from async_get_last_state(self.hass, self.entity_id)
value = state and float(state.state)
# Check against None because value can be 0
if value is not None and self._minimum <= value <= self._maximum:
self._current_value = value
else:
self._current_value = self._minimum
@asyncio.coroutine
def async_set_value(self, value):
"""Set new value."""
num_value = float(value)
if num_value < self._minimum or num_value > self._maximum:
_LOGGER.warning("Invalid value: %s (range %s - %s)",
num_value, self._minimum, self._maximum)
return
self._current_value = num_value
yield from self.async_update_ha_state()
@asyncio.coroutine
def async_increment(self):
"""Increment value."""
new_value = self._current_value + self._step
if new_value > self._maximum:
_LOGGER.warning("Invalid value: %s (range %s - %s)",
new_value, self._minimum, self._maximum)
return
self._current_value = new_value
yield from self.async_update_ha_state()
@asyncio.coroutine
def async_decrement(self):
"""Decrement value."""
new_value = self._current_value - self._step
if new_value < self._minimum:
_LOGGER.warning("Invalid value: %s (range %s - %s)",
new_value, self._minimum, self._maximum)
return
self._current_value = new_value
yield from self.async_update_ha_state()