Add on_open and on_closed triggers to cover (#1524)

components/cover/index.rst

@@ -222,6 +222,36 @@ fields are read-only, if you want to act on the cover, use the ``make_call()`` m
           // Cover is currently closing
         }
 
+.. _cover-on_open_trigger:
+
+``cover.on_open`` Trigger
+*************************
+
+This trigger is activated each time the cover reaches a fully open state.
+
+.. code-block:: yaml
+
+    cover:
+      - platform: template  # or any other platform
+        # ...
+        on_open:
+          - logger.log: "Cover is Open!"
+
+.. _cover-on_closed_trigger:
+
+``cover.on_closed`` Trigger
+***************************
+
+This trigger is activated each time the cover reaches a fully closed state.
+
+.. code-block:: yaml
+
+    cover:
+      - platform: template  # or any other platform
+        # ...
+        on_closed:
+          - logger.log: "Cover is Closed!"
+
 See Also
 --------
 

guides/automations.rst

@@ -338,6 +338,7 @@ All Triggers
   :ref:`ota.on_end <ota-on_end>` / :ref:`ota.on_error <ota-on_error>` /
   :ref:`ota.on_state_change <ota-on_state_change>`
 - :ref:`display.on_page_change <display-on_page_change-trigger>`
+- :ref:`cover.on_open <cover-on_open_trigger>` / :ref:`cover.on_closed <cover-on_closed_trigger>`
 
 All Actions
 -----------