Change light white service call attribute to accept True (#89803)

homeassistant/components/light/__init__.py

@@ -276,7 +276,7 @@ LIGHT_TURN_ON_SCHEMA = {
     vol.Exclusive(ATTR_XY_COLOR, COLOR_GROUP): vol.All(
         vol.Coerce(tuple), vol.ExactSequence((cv.small_float, cv.small_float))
     ),
-    vol.Exclusive(ATTR_WHITE, COLOR_GROUP): VALID_BRIGHTNESS,
+    vol.Exclusive(ATTR_WHITE, COLOR_GROUP): vol.Any(True, VALID_BRIGHTNESS),
     ATTR_FLASH: VALID_FLASH,
     ATTR_EFFECT: cv.string,
 }
@@ -557,6 +557,12 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:  # noqa:
             elif ColorMode.XY in supported_color_modes:
                 params[ATTR_XY_COLOR] = color_util.color_RGB_to_xy(*rgb_color)
 
+        # If white is set to True, set it to the light's brightness
+        # Add a warning in Home Assistant Core 2023.5 if the brightness is set to an
+        # integer.
+        if params.get(ATTR_WHITE) is True:
+            params[ATTR_WHITE] = light.brightness
+
         # If both white and brightness are specified, override white
         if (
             supported_color_modes

homeassistant/components/light/services.yaml

@@ -370,19 +370,16 @@ turn_on:
           unit_of_measurement: "%"
     white:
       name: White
-      description:
-        Set the light to white mode and change its brightness, where 0 turns
-        the light off, 1 is the minimum brightness and 255 is the maximum
-        brightness supported by the light.
+      description: Set the light to white mode.
       filter:
         attribute:
           supported_color_modes:
             - light.ColorMode.WHITE
       advanced: true
       selector:
-        number:
-          min: 0
-          max: 255
+        constant:
+          value: true
+          label: Enabled
     profile:
       name: Profile
       description: Name of a light profile to use.
@@ -749,6 +746,18 @@ toggle:
           min: 0
           max: 100
           unit_of_measurement: "%"
+    white:
+      name: White
+      description: Set the light to white mode.
+      filter:
+        attribute:
+          supported_color_modes:
+            - light.ColorMode.WHITE
+      advanced: true
+      selector:
+        constant:
+          value: true
+          label: Enabled
     profile:
       name: Profile
       description: Name of a light profile to use.

tests/components/light/test_init.py

@@ -2159,6 +2159,26 @@ async def test_light_service_call_white_mode(
     _, data = entity0.last_call("turn_off")
     assert data == {}
 
+    entity0.calls = []
+    await hass.services.async_call(
+        "light",
+        "turn_on",
+        {"entity_id": [entity0.entity_id], "white": True},
+        blocking=True,
+    )
+    _, data = entity0.last_call("turn_on")
+    assert data == {"white": 100}
+
+    entity0.calls = []
+    await hass.services.async_call(
+        "light",
+        "turn_on",
+        {"entity_id": [entity0.entity_id], "brightness_pct": 50, "white": True},
+        blocking=True,
+    )
+    _, data = entity0.last_call("turn_on")
+    assert data == {"white": 128}
+
 
 async def test_light_state_color_conversion(
     hass: HomeAssistant, enable_custom_integrations: None