Translate right panel stuff to ts

Add actions for right panel

src/components/views/right_panel/HeaderButton.tsx

@@ -0,0 +1,68 @@
+/*
+Copyright 2015, 2016 OpenMarket Ltd
+Copyright 2017 Vector Creations Ltd
+Copyright 2017 New Vector Ltd
+Copyright 2018 New Vector Ltd
+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 from 'react';
+import classNames from 'classnames';
+import Analytics from '../../../Analytics';
+import AccessibleTooltipButton from "../elements/AccessibleTooltipButton";
+
+interface IProps {
+    // Whether this button is highlighted
+    isHighlighted: boolean;
+    // click handler
+    onClick: () => void;
+    // The badge to display above the icon
+    badge: React.ReactNode;
+    // The parameters to track the click event
+    analytics: string[];
+
+    // Button name
+    name: string;
+    // Button title
+    title: string;
+};
+
+export default class HeaderButton extends React.Component<IProps> {
+    constructor(props: IProps) {
+        super(props);
+        this.onClick = this.onClick.bind(this);
+    }
+
+    onClick(_ev: React.KeyboardEvent) {
+        Analytics.trackEvent(...this.props.analytics);
+        this.props.onClick();
+    }
+
+    render() {
+        const classes = classNames({
+            mx_RightPanel_headerButton: true,
+            mx_RightPanel_headerButton_highlight: this.props.isHighlighted,
+            [`mx_RightPanel_${this.props.name}`]: true,
+        });
+
+        return <AccessibleTooltipButton
+            aria-selected={this.props.isHighlighted}
+            role="tab"
+            title={this.props.title}
+            className={classes}
+            onClick={this.onClick}
+        />;
+    }
+}