Convert Tooltip to TypeScript

src/components/views/elements/TooltipButton.tsx

@@ -0,0 +1,62 @@
+/*
+Copyright 2017 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 * as sdk from '../../../index';
+import {replaceableComponent} from "../../../utils/replaceableComponent";
+
+interface IProps {
+    helpText: string;
+}
+
+interface IState {
+    hover: boolean;
+}
+
+@replaceableComponent("views.elements.TooltipButton")
+export default class TooltipButton extends React.Component<IProps, IState> {
+    state = {
+        hover: false,
+    };
+
+    onMouseOver = () => {
+        this.setState({
+            hover: true,
+        });
+    };
+
+    onMouseLeave = () => {
+        this.setState({
+            hover: false,
+        });
+    };
+
+    render() {
+        const Tooltip = sdk.getComponent("elements.Tooltip");
+        const tip = this.state.hover ? <Tooltip
+            className="mx_TooltipButton_container"
+            tooltipClassName="mx_TooltipButton_helpText"
+            label={this.props.helpText}
+        /> : <div />;
+        return (
+            <div className="mx_TooltipButton" onMouseOver={this.onMouseOver} onMouseLeave={this.onMouseLeave}>
+                ?
+                { tip }
+            </div>
+        );
+    }
+}