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- /*
- * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- import { debounce } from 'lodash';
- import * as React from 'react';
-
- interface Props {
- className?: string;
- children: (position: { top: number; left: number }) => React.ReactElement<any>;
- }
-
- export default class ScreenPositionHelper extends React.PureComponent<Props> {
- container?: HTMLDivElement;
- debouncedOnResize: () => void;
-
- constructor(props: Props) {
- super(props);
- this.debouncedOnResize = debounce(() => this.forceUpdate(), 250);
- }
-
- componentDidMount() {
- this.forceUpdate();
- window.addEventListener('resize', this.debouncedOnResize);
- }
-
- componentWillUnmount() {
- window.removeEventListener('resize', this.debouncedOnResize);
- }
-
- getPosition = () => {
- const containerPos = this.container && this.container.getBoundingClientRect();
- if (!containerPos) {
- return { top: 0, left: 0 };
- }
- return {
- top: window.pageYOffset + containerPos.top,
- left: window.pageXOffset + containerPos.left
- };
- };
-
- render() {
- return (
- <div
- className={this.props.className}
- ref={container => (this.container = container as HTMLDivElement)}>
- {this.props.children(this.getPosition())}
- </div>
- );
- }
- }
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