Migrate TopUnreadMessagesBar to TypeScript

src/components/views/rooms/TopUnreadMessagesBar.tsx

@@ -0,0 +1,47 @@
+/*
+Copyright 2016 OpenMarket Ltd
+Copyright 2017 Vector Creations Ltd
+Copyright 2019-2021 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 React from 'react';
+import { _t } from '../../../languageHandler';
+import AccessibleButton from '../elements/AccessibleButton';
+import { replaceableComponent } from "../../../utils/replaceableComponent";
+
+interface IProps {
+    onScrollUpClick?: (e: React.MouseEvent) => void;
+    onCloseClick?: (e: React.MouseEvent) => void;
+}
+
+@replaceableComponent("views.rooms.TopUnreadMessagesBar")
+export default class TopUnreadMessagesBar extends React.PureComponent<IProps> {
+    public render(): JSX.Element {
+        return (
+            <div className="mx_TopUnreadMessagesBar">
+                <AccessibleButton
+                    className="mx_TopUnreadMessagesBar_scrollUp"
+                    title={_t('Jump to first unread message.')}
+                    onClick={this.props.onScrollUpClick}
+                />
+                <AccessibleButton
+                    className="mx_TopUnreadMessagesBar_markAsRead"
+                    title={_t('Mark all as read')}
+                    onClick={this.props.onCloseClick}
+                />
+            </div>
+        );
+    }
+}