Tidy up TemporaryTile now that it isn't temporary

src/components/views/rooms/ExtraTile.tsx

@@ -0,0 +1,119 @@
+/*
+Copyright 2020, 2021 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 from "react";
+import classNames from "classnames";
+import {
+    RovingAccessibleButton,
+    RovingAccessibleTooltipButton,
+} from "../../../accessibility/RovingTabIndex";
+import NotificationBadge from "./NotificationBadge";
+import { NotificationState } from "../../../stores/notifications/NotificationState";
+
+interface IProps {
+    isMinimized: boolean;
+    isSelected: boolean;
+    displayName: string;
+    avatar: React.ReactElement;
+    notificationState?: NotificationState;
+    onClick: () => void;
+}
+
+interface IState {
+    hover: boolean;
+}
+
+export default class ExtraTile extends React.Component<IProps, IState> {
+    constructor(props: IProps) {
+        super(props);
+
+        this.state = {
+            hover: false,
+        };
+    }
+
+    private onTileMouseEnter = () => {
+        this.setState({hover: true});
+    };
+
+    private onTileMouseLeave = () => {
+        this.setState({hover: false});
+    };
+
+    public render(): React.ReactElement {
+        // XXX: We copy classes because it's easier
+        const classes = classNames({
+            'mx_ExtraTile': true,
+            'mx_RoomTile': true,
+            'mx_RoomTile_selected': this.props.isSelected,
+            'mx_RoomTile_minimized': this.props.isMinimized,
+        });
+
+        let badge;
+        if (this.props.notificationState) {
+            badge = (
+                <NotificationBadge
+                    notification={this.props.notificationState}
+                    forceCount={false}
+                />
+            );
+        }
+
+        let name = this.props.displayName;
+        if (typeof name !== 'string') name = '';
+        name = name.replace(":", ":\u200b"); // add a zero-width space to allow linewrapping after the colon
+
+        const nameClasses = classNames({
+            "mx_RoomTile_name": true,
+            "mx_RoomTile_nameHasUnreadEvents": this.props.notificationState?.isUnread,
+        });
+
+        let nameContainer = (
+            <div className="mx_RoomTile_nameContainer">
+                <div title={name} className={nameClasses} tabIndex={-1} dir="auto">
+                    {name}
+                </div>
+            </div>
+        );
+        if (this.props.isMinimized) nameContainer = null;
+
+        let Button = RovingAccessibleButton;
+        if (this.props.isMinimized) {
+            Button = RovingAccessibleTooltipButton;
+        }
+
+        return (
+            <React.Fragment>
+                <Button
+                    className={classes}
+                    onMouseEnter={this.onTileMouseEnter}
+                    onMouseLeave={this.onTileMouseLeave}
+                    onClick={this.props.onClick}
+                    role="treeitem"
+                    title={this.props.isMinimized ? name : undefined}
+                >
+                    <div className="mx_RoomTile_avatarContainer">
+                        {this.props.avatar}
+                    </div>
+                    {nameContainer}
+                    <div className="mx_RoomTile_badgeContainer">
+                        {badge}
+                    </div>
+                </Button>
+            </React.Fragment>
+        );
+    }
+}