Proof of concept for implementing triggers in a different domain

homeassistant/components/alarm_control_panel/strings.json

@@ -14,7 +14,7 @@
           "name": "[%key:component::alarm_control_panel::common::condition_behavior_name%]"
         }
       },
-      "name": "Alarm is armed"
+      "name": "If an alarm is armed"
     },
     "is_armed_away": {
       "description": "Tests if one or more alarms are armed in away mode.",
@@ -24,7 +24,7 @@
           "name": "[%key:component::alarm_control_panel::common::condition_behavior_name%]"
         }
       },
-      "name": "Alarm is armed away"
+      "name": "If an alarm is armed away"
     },
     "is_armed_home": {
       "description": "Tests if one or more alarms are armed in home mode.",
@@ -34,7 +34,7 @@
           "name": "[%key:component::alarm_control_panel::common::condition_behavior_name%]"
         }
       },
-      "name": "Alarm is armed home"
+      "name": "If an alarm is armed home"
     },
     "is_armed_night": {
       "description": "Tests if one or more alarms are armed in night mode.",
@@ -44,7 +44,7 @@
           "name": "[%key:component::alarm_control_panel::common::condition_behavior_name%]"
         }
       },
-      "name": "Alarm is armed night"
+      "name": "If an alarm is armed night"
     },
     "is_armed_vacation": {
       "description": "Tests if one or more alarms are armed in vacation mode.",
@@ -54,7 +54,7 @@
           "name": "[%key:component::alarm_control_panel::common::condition_behavior_name%]"
         }
       },
-      "name": "Alarm is armed vacation"
+      "name": "If an alarm is armed vacation"
     },
     "is_disarmed": {
       "description": "Tests if one or more alarms are disarmed.",
@@ -64,7 +64,7 @@
           "name": "[%key:component::alarm_control_panel::common::condition_behavior_name%]"
         }
       },
-      "name": "Alarm is disarmed"
+      "name": "If an alarm is disarmed"
     },
     "is_triggered": {
       "description": "Tests if one or more alarms are triggered.",
@@ -74,7 +74,7 @@
           "name": "[%key:component::alarm_control_panel::common::condition_behavior_name%]"
         }
       },
-      "name": "Alarm is triggered"
+      "name": "If an alarm is triggered"
     }
   },
   "device_automation": {

homeassistant/components/assist_satellite/strings.json

@@ -14,7 +14,7 @@
           "name": "[%key:component::assist_satellite::common::condition_behavior_name%]"
         }
       },
-      "name": "Satellite is idle"
+      "name": "If a satellite is idle"
     },
     "is_listening": {
       "description": "Tests if one or more Assist satellites are listening.",
@@ -24,7 +24,7 @@
           "name": "[%key:component::assist_satellite::common::condition_behavior_name%]"
         }
       },
-      "name": "Satellite is listening"
+      "name": "If a satellite is listening"
     },
     "is_processing": {
       "description": "Tests if one or more Assist satellites are processing.",
@@ -34,7 +34,7 @@
           "name": "[%key:component::assist_satellite::common::condition_behavior_name%]"
         }
       },
-      "name": "Satellite is processing"
+      "name": "If a satellite is processing"
     },
     "is_responding": {
       "description": "Tests if one or more Assist satellites are responding.",
@@ -44,7 +44,7 @@
           "name": "[%key:component::assist_satellite::common::condition_behavior_name%]"
         }
       },
-      "name": "Satellite is responding"
+      "name": "If a satellite is responding"
     }
   },
   "entity_component": {

homeassistant/components/binary_sensor/icons.json

@@ -176,6 +176,9 @@
     }
   },
   "triggers": {
+    "door.opened": {
+      "trigger": "mdi:door-open"
+    },
     "occupancy_cleared": {
       "trigger": "mdi:home-outline"
     },

homeassistant/components/binary_sensor/strings.json

@@ -332,6 +332,16 @@
   },
   "title": "Binary sensor",
   "triggers": {
+    "door.opened": {
+      "description": "Triggers after one or more occupancy doors open.",
+      "fields": {
+        "behavior": {
+          "description": "[%key:component::binary_sensor::common::trigger_behavior_description_occupancy%]",
+          "name": "[%key:component::binary_sensor::common::trigger_behavior_name%]"
+        }
+      },
+      "name": "Door opened"
+    },
     "occupancy_cleared": {
       "description": "Triggers after one or more occupancy sensors stop detecting occupancy.",
       "fields": {

homeassistant/components/binary_sensor/trigger.py

@@ -53,6 +53,7 @@ def make_binary_sensor_trigger(
 
 
 TRIGGERS: dict[str, type[Trigger]] = {
+    "_door.opened": make_binary_sensor_trigger(BinarySensorDeviceClass.DOOR, STATE_ON),
     "occupancy_detected": make_binary_sensor_trigger(
         BinarySensorDeviceClass.OCCUPANCY, STATE_ON
     ),

homeassistant/components/binary_sensor/triggers.yaml

@@ -23,3 +23,10 @@ occupancy_detected:
     entity:
       domain: binary_sensor
       device_class: occupancy
+
+_door.opened:
+  fields: *trigger_common_fields
+  target:
+    entity:
+      domain: binary_sensor
+      device_class: door

homeassistant/components/fan/strings.json

@@ -14,7 +14,7 @@
           "name": "[%key:component::fan::common::condition_behavior_name%]"
         }
       },
-      "name": "Fan is off"
+      "name": "If a fan is off"
     },
     "is_on": {
       "description": "Tests if one or more fans are on.",
@@ -24,7 +24,7 @@
           "name": "[%key:component::fan::common::condition_behavior_name%]"
         }
       },
-      "name": "Fan is on"
+      "name": "If a fan is on"
     }
   },
   "device_automation": {

homeassistant/components/light/strings.json

@@ -49,7 +49,7 @@
           "name": "[%key:component::light::common::condition_behavior_name%]"
         }
       },
-      "name": "Light is off"
+      "name": "If a light is off"
     },
     "is_on": {
       "description": "Tests if one or more lights are on.",
@@ -59,7 +59,7 @@
           "name": "[%key:component::light::common::condition_behavior_name%]"
         }
       },
-      "name": "Light is on"
+      "name": "If a light is on"
     }
   },
   "device_automation": {

homeassistant/helpers/trigger.py

@@ -121,7 +121,7 @@ def starts_with_dot(key: str) -> str:
 _TRIGGERS_DESCRIPTION_SCHEMA = vol.Schema(
     {
         vol.Remove(vol.All(str, starts_with_dot)): object,
-        cv.underscore_slug: vol.Any(None, _TRIGGER_DESCRIPTION_SCHEMA),
+        str: vol.Any(None, _TRIGGER_DESCRIPTION_SCHEMA),
     }
 )
 
@@ -1433,6 +1433,10 @@ async def async_get_all_descriptions(
         if (target := yaml_description.get("target")) is not None:
             description["target"] = target
 
+        prefix, sep, _ = missing_trigger.partition(".")
+        if sep and domain != prefix:
+            description["translation_domain"] = domain
+
         new_descriptions_cache[missing_trigger] = description
     hass.data[TRIGGER_DESCRIPTION_CACHE] = new_descriptions_cache
     return new_descriptions_cache