Add default icons for button entities (#10774)

src/common/entity/domain_icon.ts

@@ -1,30 +1,33 @@
 import {
   mdiAccount,
   mdiAccountArrowRight,
-  mdiAirHumidifierOff,
   mdiAirHumidifier,
-  mdiFlash,
+  mdiAirHumidifierOff,
   mdiBluetooth,
   mdiBluetoothConnect,
+  mdiCalendar,
+  mdiCast,
+  mdiCastConnected,
+  mdiClock,
+  mdiEmoticonDead,
+  mdiFlash,
+  mdiGestureTapButton,
   mdiLanConnect,
   mdiLanDisconnect,
-  mdiLockOpen,
+  mdiLock,
   mdiLockAlert,
   mdiLockClock,
-  mdiLock,
-  mdiCastConnected,
-  mdiCast,
-  mdiEmoticonDead,
+  mdiLockOpen,
+  mdiPackageUp,
   mdiPowerPlug,
   mdiPowerPlugOff,
+  mdiRestart,
   mdiSleep,
   mdiTimerSand,
   mdiToggleSwitch,
   mdiToggleSwitchOff,
-  mdiZWave,
-  mdiClock,
-  mdiCalendar,
   mdiWeatherNight,
+  mdiZWave,
 } from "@mdi/js";
 import { HassEntity } from "home-assistant-js-websocket";
 /**
@@ -52,6 +55,16 @@ export const domainIcon = (
     case "binary_sensor":
       return binarySensorIcon(compareState, stateObj);
 
+    case "button":
+      switch (stateObj?.attributes.device_class) {
+        case "restart":
+          return mdiRestart;
+        case "update":
+          return mdiPackageUp;
+        default:
+          return mdiGestureTapButton;
+      }
+
     case "cover":
       return coverIcon(compareState, stateObj);
 

src/util/hass-attributes-util.ts

@@ -39,6 +39,7 @@ const hassAttributeUtil = {
       "vibration",
       "window",
     ],
+    button: ["restart", "update"],
     cover: [
       "awning",
       "blind",