Make UserOnlineDot more generic

src/components/views/rooms/RoomTileOnlineDot.js

@@ -1,48 +0,0 @@
-/*
-Copyright 2019 The Matrix.org Foundation C.I.C.
-
-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 React, {useContext, useEffect, useMemo, useState, useCallback} from "react";
-import PropTypes from "prop-types";
-
-import {useEventEmitter} from "../../../hooks/useEventEmitter";
-import MatrixClientContext from "../../../contexts/MatrixClientContext";
-
-const RoomTileOnlineDot = ({userId}) => {
-    const cli = useContext(MatrixClientContext);
-    const user = useMemo(() => cli.getUser(userId), [cli, userId]);
-
-    const [isOnline, setIsOnline] = useState(false);
-
-    // Recheck if the user or client changes
-    useEffect(() => {
-        setIsOnline(user && (user.currentlyActive || user.presence === "online"));
-    }, [cli, user]);
-    // Recheck also if we receive a User.currentlyActive event
-    const currentlyActiveHandler = useCallback((ev) => {
-        const content = ev.getContent();
-        setIsOnline(content.currently_active || content.presence === "online");
-    }, []);
-    useEventEmitter(user, "User.currentlyActive", currentlyActiveHandler);
-    useEventEmitter(user, "User.presence", currentlyActiveHandler);
-
-    return isOnline ? <span className="mx_RoomTile_online_dot" /> : null;
-};
-
-RoomTileOnlineDot.propTypes = {
-    userId: PropTypes.string.isRequired,
-};
-
-export default RoomTileOnlineDot;