Add input_text component

homeassistant/components/input_text.py

@@ -0,0 +1,202 @@
+"""
+Component to offer a way to enter a value into a text box.
+
+For more details about this component, please refer to the documentation
+at https://home-assistant.io/components/input_text/
+"""
+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)
+from homeassistant.loader import bind_hass
+from homeassistant.helpers.entity import Entity
+from homeassistant.helpers.entity_component import EntityComponent
+from homeassistant.helpers.restore_state import async_get_last_state
+
+_LOGGER = logging.getLogger(__name__)
+
+DOMAIN = 'input_text'
+ENTITY_ID_FORMAT = DOMAIN + '.{}'
+
+CONF_INITIAL = 'initial'
+CONF_MIN = 'min'
+CONF_MAX = 'max'
+CONF_DISABLED = 'disabled'
+
+ATTR_VALUE = 'value'
+ATTR_MIN = 'min'
+ATTR_MAX = 'max'
+ATTR_PATTERN = 'pattern'
+ATTR_DISABLED = 'disabled'
+
+SERVICE_SELECT_VALUE = 'select_value'
+
+SERVICE_SELECT_VALUE_SCHEMA = vol.Schema({
+    vol.Optional(ATTR_ENTITY_ID): cv.entity_ids,
+    vol.Required(ATTR_VALUE): cv.string,
+})
+
+
+def _cv_input_text(cfg):
+    """Configure validation helper for input box (voluptuous)."""
+    minimum = cfg.get(CONF_MIN)
+    maximum = cfg.get(CONF_MAX)
+    if minimum > maximum:
+        raise vol.Invalid('Max len ({}) is not greater than min len ({})'
+                          .format(minimum, maximum))
+    state = cfg.get(CONF_INITIAL)
+    if state is not None and (len(state) < minimum or len(state) > maximum):
+        raise vol.Invalid('Initial value {} length 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.Optional(CONF_MIN, default=0): vol.Coerce(int),
+            vol.Optional(CONF_MAX, default=100): vol.Coerce(int),
+            vol.Optional(CONF_INITIAL, ''): cv.string,
+            vol.Optional(CONF_ICON): cv.icon,
+            vol.Optional(ATTR_UNIT_OF_MEASUREMENT): cv.string,
+            vol.Optional(ATTR_PATTERN): cv.string,
+            vol.Optional(CONF_DISABLED, default=False): cv.boolean,
+        }, _cv_input_text)
+    })
+}, required=True, extra=vol.ALLOW_EXTRA)
+
+
+@bind_hass
+def select_value(hass, entity_id, value):
+    """Set input_text to value."""
+    hass.services.call(DOMAIN, SERVICE_SELECT_VALUE, {
+        ATTR_ENTITY_ID: entity_id,
+        ATTR_VALUE: value,
+    })
+
+
+@asyncio.coroutine
+def async_setup(hass, config):
+    """Set up an input text box."""
+    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)
+        icon = cfg.get(CONF_ICON)
+        unit = cfg.get(ATTR_UNIT_OF_MEASUREMENT)
+        pattern = cfg.get(ATTR_PATTERN)
+        disabled = cfg.get(CONF_DISABLED)
+
+        entities.append(InputText(
+            object_id, name, initial, minimum, maximum, icon, unit,
+            pattern, disabled))
+
+    if not entities:
+        return False
+
+    @asyncio.coroutine
+    def async_select_value_service(call):
+        """Handle a calls to the input box services."""
+        target_inputs = component.async_extract_from_service(call)
+
+        tasks = [input_text.async_select_value(call.data[ATTR_VALUE])
+                 for input_text in target_inputs]
+        if tasks:
+            yield from asyncio.wait(tasks, loop=hass.loop)
+
+    hass.services.async_register(
+        DOMAIN, SERVICE_SELECT_VALUE, async_select_value_service,
+        schema=SERVICE_SELECT_VALUE_SCHEMA)
+
+    yield from component.async_add_entities(entities)
+    return True
+
+
+class InputText(Entity):
+    """Represent a text box."""
+
+    def __init__(self, object_id, name, initial, minimum, maximum, icon,
+                 unit, pattern, disabled):
+        """Initialize a select input."""
+        self.entity_id = ENTITY_ID_FORMAT.format(object_id)
+        self._name = name
+        self._current_value = initial
+        self._minimum = minimum
+        self._maximum = maximum
+        self._icon = icon
+        self._unit = unit
+        self._pattern = pattern
+        self._disabled = disabled
+
+    @property
+    def should_poll(self):
+        """If entity should be polled."""
+        return False
+
+    @property
+    def name(self):
+        """Return the name of the select input box."""
+        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 disabled(self):
+        """Return the disabled flag."""
+        return self._disabled
+
+    @property
+    def state_attributes(self):
+        """Return the state attributes."""
+        return {
+            ATTR_MIN: self._minimum,
+            ATTR_MAX: self._maximum,
+            ATTR_PATTERN: self._pattern,
+            ATTR_DISABLED: self._disabled,
+        }
+
+    @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 state.state
+
+        # Check against None because value can be 0
+        if value is not None and self._minimum <= len(value) <= self._maximum:
+            self._current_value = value
+
+    @asyncio.coroutine
+    def async_select_value(self, value):
+        """Select new value."""
+        if len(value) < self._minimum or len(value) > self._maximum:
+            _LOGGER.warning("Invalid value: %s (length range %s - %s)",
+                            value, self._minimum, self._maximum)
+            return
+        self._current_value = value
+        yield from self.async_update_ha_state()

tests/components/test_input_text.py

@@ -0,0 +1,147 @@
+"""The tests for the Input text component."""
+# pylint: disable=protected-access
+import asyncio
+import unittest
+
+from homeassistant.core import CoreState, State
+from homeassistant.setup import setup_component, async_setup_component
+from homeassistant.components.input_text import (DOMAIN, select_value)
+
+from tests.common import get_test_home_assistant, mock_restore_cache
+
+
+class TestInputText(unittest.TestCase):
+    """Test the input slider component."""
+
+    # pylint: disable=invalid-name
+    def setUp(self):
+        """Setup things to be run when tests are started."""
+        self.hass = get_test_home_assistant()
+
+    # pylint: disable=invalid-name
+    def tearDown(self):
+        """Stop everything that was started."""
+        self.hass.stop()
+
+    def test_config(self):
+        """Test config."""
+        invalid_configs = [
+            None,
+            {},
+            {'name with space': None},
+            {'test_1': {
+                'min': 50,
+                'max': 50,
+            }},
+        ]
+        for cfg in invalid_configs:
+            self.assertFalse(
+                setup_component(self.hass, DOMAIN, {DOMAIN: cfg}))
+
+    def test_select_value(self):
+        """Test select_value method."""
+        self.assertTrue(setup_component(self.hass, DOMAIN, {DOMAIN: {
+            'test_1': {
+                'initial': 'test',
+                'min': 3,
+                'max': 10,
+            },
+        }}))
+        entity_id = 'input_text.test_1'
+
+        state = self.hass.states.get(entity_id)
+        self.assertEqual('test', str(state.state))
+
+        select_value(self.hass, entity_id, 'testing')
+        self.hass.block_till_done()
+
+        state = self.hass.states.get(entity_id)
+        self.assertEqual('testing', str(state.state))
+
+        select_value(self.hass, entity_id, 'testing too long')
+        self.hass.block_till_done()
+
+        state = self.hass.states.get(entity_id)
+        self.assertEqual('testing', str(state.state))
+
+
+@asyncio.coroutine
+def test_restore_state(hass):
+    """Ensure states are restored on startup."""
+    mock_restore_cache(hass, (
+        State('input_text.b1', 'test'),
+        State('input_text.b2', 'testing too long'),
+    ))
+
+    hass.state = CoreState.starting
+
+    yield from async_setup_component(hass, DOMAIN, {
+        DOMAIN: {
+            'b1': {
+                'min': 0,
+                'max': 10,
+            },
+            'b2': {
+                'min': 0,
+                'max': 10,
+            },
+        }})
+
+    state = hass.states.get('input_text.b1')
+    assert state
+    assert str(state.state) == 'test'
+
+    state = hass.states.get('input_text.b2')
+    assert state
+    assert str(state.state) == 'unknown'
+
+
+@asyncio.coroutine
+def test_initial_state_overrules_restore_state(hass):
+    """Ensure states are restored on startup."""
+    mock_restore_cache(hass, (
+        State('input_text.b1', 'testing'),
+        State('input_text.b2', 'testing too long'),
+    ))
+
+    hass.state = CoreState.starting
+
+    yield from async_setup_component(hass, DOMAIN, {
+        DOMAIN: {
+            'b1': {
+                'initial': 'test',
+                'min': 0,
+                'max': 10,
+            },
+            'b2': {
+                'initial': 'test',
+                'min': 0,
+                'max': 10,
+            },
+        }})
+
+    state = hass.states.get('input_text.b1')
+    assert state
+    assert str(state.state) == 'test'
+
+    state = hass.states.get('input_text.b2')
+    assert state
+    assert str(state.state) == 'test'
+
+
+@asyncio.coroutine
+def test_no_initial_state_and_no_restore_state(hass):
+    """Ensure that entity is create without initial and restore feature."""
+    hass.state = CoreState.starting
+
+    yield from async_setup_component(hass, DOMAIN, {
+        DOMAIN: {
+            'b1': {
+                'min': 0,
+                'max': 100,
+            },
+        }})
+
+    state = hass.states.get('input_text.b1')
+    assert state
+    assert str(state.state) == 'unknown'