91 lines
2.1 KiB
JavaScript
91 lines
2.1 KiB
JavaScript
import React from 'react';
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import PropTypes from 'prop-types';
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import { FormattedMessage } from 'react-intl';
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import { throttle } from 'lodash';
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import Icon from 'soapbox/components/icon';
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import classNames from 'classnames';
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export default class SubNavigation extends React.PureComponent {
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static propTypes = {
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message: PropTypes.string,
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}
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static contextTypes = {
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router: PropTypes.object.isRequired,
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}
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state = {
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scrolled: false,
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}
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handleBackClick = () => {
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if (window.history && window.history.length === 1) {
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this.context.router.history.push('/');
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} else {
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this.context.router.history.goBack();
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}
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}
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handleBackKeyUp = (e) => {
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if (e.key === 'Enter') {
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this.handleClick();
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}
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}
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componentDidMount() {
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this.attachScrollListener();
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}
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componentWillUnmount() {
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this.detachScrollListener();
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}
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attachScrollListener() {
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window.addEventListener('scroll', this.handleScroll);
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}
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detachScrollListener() {
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window.removeEventListener('scroll', this.handleScroll);
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}
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handleScroll = throttle(() => {
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if (this.node) {
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const { top } = this.node.getBoundingClientRect();
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if (top <= 50) {
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this.setState({ scrolled: true });
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} else {
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this.setState({ scrolled: false });
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}
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}
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}, 150, { trailing: true });
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setRef = c => {
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this.node = c;
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}
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render() {
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const { message } = this.props;
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const { scrolled } = this.state;
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return (
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<div className={classNames('sub-navigation', { 'sub-navigation--scrolled': scrolled })} ref={this.setRef}>
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<div className='sub-navigation__content'>
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<button
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className='sub-navigation__back'
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onClick={this.handleBackClick}
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onKeyUp={this.handleBackKeyUp}
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>
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<Icon src={require('@tabler/icons/icons/arrow-back.svg')} />
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<FormattedMessage id='sub_navigation.back' defaultMessage='Back' />
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</button>
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<div className='sub-navigation__message'>
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{message}
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</div>
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</div>
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</div>
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);
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}
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}
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