Implement new in-call header and footer designs

src/room/useRoomName.ts

@@ -0,0 +1,27 @@
+/*
+Copyright 2023 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 { Room, RoomEvent } from "matrix-js-sdk/src/matrix";
+import { useState } from "react";
+
+import { useTypedEventEmitter } from "../useEvents";
+
+export function useRoomName(room: Room): string {
+  const [, setNumUpdates] = useState(0);
+  // Whenever the name changes, force an update
+  useTypedEventEmitter(room, RoomEvent.Name, () => setNumUpdates((n) => n + 1));
+  return room.name;
+}