Cover component for RFlink (#9432)

* second try on rflink / cover

* no newline at end of file

* changed entity

* fixed comments from pvizeli

* removed :

* removed return 'unknown'

* Fixed comments from Rytilahti

* removed newline

* Reverted to None

* cleanup

* Cleanup

homeassistant/components/cover/rflink.py

@@ -0,0 +1,116 @@
+"""
+Support for Rflink Cover devices.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/cover.rflink/
+"""
+import asyncio
+import logging
+
+import voluptuous as vol
+
+from homeassistant.components.rflink import (
+    DATA_ENTITY_GROUP_LOOKUP, DATA_ENTITY_LOOKUP,
+    DEVICE_DEFAULTS_SCHEMA, EVENT_KEY_COMMAND, RflinkCommand)
+from homeassistant.components.cover import (
+    CoverDevice, PLATFORM_SCHEMA)
+import homeassistant.helpers.config_validation as cv
+from homeassistant.const import CONF_NAME
+
+
+DEPENDENCIES = ['rflink']
+
+_LOGGER = logging.getLogger(__name__)
+
+
+CONF_ALIASES = 'aliases'
+CONF_GROUP_ALIASES = 'group_aliases'
+CONF_GROUP = 'group'
+CONF_NOGROUP_ALIASES = 'nogroup_aliases'
+CONF_DEVICE_DEFAULTS = 'device_defaults'
+CONF_DEVICES = 'devices'
+CONF_AUTOMATIC_ADD = 'automatic_add'
+CONF_FIRE_EVENT = 'fire_event'
+CONF_IGNORE_DEVICES = 'ignore_devices'
+CONF_RECONNECT_INTERVAL = 'reconnect_interval'
+CONF_SIGNAL_REPETITIONS = 'signal_repetitions'
+CONF_WAIT_FOR_ACK = 'wait_for_ack'
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
+    vol.Optional(CONF_DEVICE_DEFAULTS, default=DEVICE_DEFAULTS_SCHEMA({})):
+    DEVICE_DEFAULTS_SCHEMA,
+    vol.Optional(CONF_DEVICES, default={}): vol.Schema({
+        cv.string: {
+            vol.Optional(CONF_NAME): cv.string,
+            vol.Optional(CONF_ALIASES, default=[]):
+                vol.All(cv.ensure_list, [cv.string]),
+            vol.Optional(CONF_GROUP_ALIASES, default=[]):
+                vol.All(cv.ensure_list, [cv.string]),
+            vol.Optional(CONF_NOGROUP_ALIASES, default=[]):
+                vol.All(cv.ensure_list, [cv.string]),
+            vol.Optional(CONF_FIRE_EVENT, default=False): cv.boolean,
+            vol.Optional(CONF_SIGNAL_REPETITIONS): vol.Coerce(int),
+            vol.Optional(CONF_GROUP, default=True): cv.boolean,
+        },
+    }),
+})
+
+
+def devices_from_config(domain_config, hass=None):
+    """Parse configuration and add Rflink cover devices."""
+    devices = []
+    for device_id, config in domain_config[CONF_DEVICES].items():
+        device_config = dict(domain_config[CONF_DEVICE_DEFAULTS], **config)
+        device = RflinkCover(device_id, hass, **device_config)
+        devices.append(device)
+
+        # Register entity (and aliases) to listen to incoming rflink events
+        # Device id and normal aliases respond to normal and group command
+        hass.data[DATA_ENTITY_LOOKUP][
+            EVENT_KEY_COMMAND][device_id].append(device)
+        if config[CONF_GROUP]:
+            hass.data[DATA_ENTITY_GROUP_LOOKUP][
+                EVENT_KEY_COMMAND][device_id].append(device)
+        for _id in config[CONF_ALIASES]:
+            hass.data[DATA_ENTITY_LOOKUP][
+                EVENT_KEY_COMMAND][_id].append(device)
+            hass.data[DATA_ENTITY_GROUP_LOOKUP][
+                EVENT_KEY_COMMAND][_id].append(device)
+    return devices
+
+
+@asyncio.coroutine
+def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
+    """Set up the Rflink cover platform."""
+    async_add_devices(devices_from_config(config, hass))
+
+
+class RflinkCover(RflinkCommand, CoverDevice):
+    """Rflink entity which can switch on/stop/off (eg: cover)."""
+
+    def _handle_event(self, event):
+        """Adjust state if Rflink picks up a remote command for this device."""
+        self.cancel_queued_send_commands()
+
+        command = event['command']
+        if command in ['on', 'allon']:
+            self._state = True
+        elif command in ['off', 'alloff']:
+            self._state = False
+
+    @property
+    def should_poll(self):
+        """No polling available in RFlink cover."""
+        return False
+
+    def async_close_cover(self, **kwargs):
+        """Turn the device close."""
+        return self._async_handle_command("close_cover")
+
+    def async_open_cover(self, **kwargs):
+        """Turn the device open."""
+        return self._async_handle_command("open_cover")
+
+    def async_stop_cover(self, **kwargs):
+        """Turn the device stop."""
+        return self._async_handle_command("stop_cover")