Add support for more advanced forms of overriding

docs/examples.md

@@ -424,7 +424,7 @@ overrides:
       - condition: state
         entity: light.office_main_lights
         state: 'on'
-    overrides:
+    merge:
       menu:
         position: bottom
 ```
@@ -451,7 +451,7 @@ overrides:
       - condition: state
         entity: binary_sensor.alarm_armed
         state: 'off'
-    overrides:
+    merge:
       view:
         default: image
 ```
@@ -471,7 +471,7 @@ overrides:
         fullscreen: true
       - condition: display_mode
         display_mode: grid
-    overrides:
+    merge:
       live:
         display:
           grid_columns: 5
@@ -497,7 +497,7 @@ overrides:
   - conditions:
       - condition: expand
         expand: true
-    overrides:
+    merge:
       menu:
         style: overlay
 ```
@@ -520,11 +520,29 @@ overrides:
   - conditions:
       - condition: fullscreen
         fullscreen: true
-    overrides:
+    merge:
       menu:
         style: none
 ```
 
+### Remove a camera when an entity state changes
+
+This example removes a camera from the card when an entity is disabled (e.g. a switch controlling power to the camera).
+
+```yaml
+type: custom:frigate-card
+cameras:
+  - camera_entity: camera.office
+  - camera_entity: camera.kitchen
+overrides:
+  - conditions:
+      - condition: state
+        entity: switch.kitchen_camera_power
+        state: off
+    delete:
+      - 'cameras[1]'
+```
+
 ## PTZ control
 
 The card supports using PTZ controls to conveniently control pan, tilt and zoom for cameras. This example shows the PTZ controls on the `live` view. Note that if your camera engine supports it (e.g. `frigate`) this will just work out of the box with no configuration at all.
@@ -568,7 +586,7 @@ overrides:
   - conditions:
       - condition: screen
         media_query: '(orientation: landscape)'
-    overrides:
+    merge:
       menu:
         position: left
 ```
@@ -584,7 +602,7 @@ overrides:
   - conditions:
       - condition: screen
         media_query: '(max-width: 300px)'
-    overrides:
+    merge:
       menu:
         style: none
       live: