Update status message in the member list and user info panel when it is changed (#7338)

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

src/hooks/useUserStatusMessage.ts

@@ -0,0 +1,38 @@
+/*
+Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
+
+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 { MatrixClient } from "matrix-js-sdk/src/client";
+import { User } from "matrix-js-sdk/src/models/user";
+import { useContext } from "react";
+
+import MatrixClientContext from "../contexts/MatrixClientContext";
+import { useEventEmitterState } from "./useEventEmitter";
+import { Member } from "../components/views/right_panel/UserInfo";
+import { useFeatureEnabled } from "./useSettings";
+
+const getUser = (cli: MatrixClient, user: Member): User => cli.getUser(user?.userId);
+const getStatusMessage = (cli: MatrixClient, user: Member): string => {
+    return getUser(cli, user).unstable_statusMessage;
+};
+
+// Hook to simplify handling Matrix User status
+export const useUserStatusMessage = (user?: Member): string => {
+    const cli = useContext(MatrixClientContext);
+    const enabled = useFeatureEnabled("feature_custom_status");
+    return useEventEmitterState(enabled && getUser(cli, user), "User.unstable_statusMessage", () => {
+        return getStatusMessage(cli, user);
+    });
+};