Add activity tracker

js/plugin/activity.ts

@@ -0,0 +1,40 @@
+export const ActivityMixin = (SuperClass) => {
+  return class ActivityMixinClass extends SuperClass {
+    activityTriggered = false;
+    _activityCooldown = 15000;
+    _activityTimeout;
+    constructor() {
+      super();
+      for (const ev of ["pointerdown", "pointermove", "keydown"]) {
+        window.addEventListener(ev, () => this.activityTrigger());
+      }
+      this.addEventListener("fully-update", () => {
+        this.activityTrigger();
+      });
+    }
+
+    activityTrigger() {
+      if (!this.activityTriggered) {
+        this.sendUpdate({
+          activity: true,
+        });
+      }
+      this.activityTriggered = true;
+      clearTimeout(this._activityTimeout);
+      this._activityTimeout = setTimeout(
+        () => this.activityReset(),
+        this._activityCooldown
+      );
+    }
+
+    activityReset() {
+      clearTimeout(this._activityTimeout);
+      if (this.activityTriggered) {
+        this.sendUpdate({
+          activity: false,
+        });
+      }
+      this.activityTriggered = false;
+    }
+  };
+};

js/plugin/main.ts

@@ -9,6 +9,7 @@ import { RequireInteractMixin } from "./require-interact";
 import { FullyMixin } from "./fullyKiosk";
 import { BrowserStateMixin } from "./browser";
 import { ServicesMixin } from "./services";
+import { ActivityMixin } from "./activity";
 import "./popups";
 import { PopupMixin } from "./popups";
 import pjson from "../../package.json";
@@ -59,11 +60,13 @@ import pjson from "../../package.json";
   */
 export class BrowserMod extends ServicesMixin(
   PopupMixin(
-    BrowserStateMixin(
-      CameraMixin(
-        MediaPlayerMixin(
-          ScreenSaverMixin(
-            FullyMixin(RequireInteractMixin(ConnectionMixin(EventTarget)))
+    ActivityMixin(
+      BrowserStateMixin(
+        CameraMixin(
+          MediaPlayerMixin(
+            ScreenSaverMixin(
+              FullyMixin(RequireInteractMixin(ConnectionMixin(EventTarget)))
+            )
           )
         )
       )