Make the 'waiting for network' state work with spacebar

src/useEvents.ts

@@ -0,0 +1,34 @@
+/*
+Copyright 2022 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { useEffect } from "react";
+
+// Shortcut for registering a listener on an EventTarget
+export const useEventTarget = <T extends Event>(
+  target: EventTarget,
+  eventType: string,
+  listener: (event: T) => void,
+  options?: AddEventListenerOptions
+) => {
+  useEffect(() => {
+    if (target) {
+      target.addEventListener(eventType, listener, options);
+      return () => target.removeEventListener(eventType, listener, options);
+    }
+  }, [target, eventType, listener, options]);
+};
+
+// TODO: Have a similar hook for EventEmitters