78 lines
1.9 KiB
JavaScript
78 lines
1.9 KiB
JavaScript
import PropTypes from 'prop-types';
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import { PureComponent } from 'react';
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import { supportsPassiveEvents } from 'detect-passive-events';
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import { scrollTop } from '../scroll';
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const listenerOptions = supportsPassiveEvents ? { passive: true } : false;
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export default class Column extends PureComponent {
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static propTypes = {
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children: PropTypes.node,
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label: PropTypes.string,
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bindToDocument: PropTypes.bool,
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};
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scrollTop () {
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let scrollable = null;
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if (this.props.bindToDocument) {
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scrollable = document.scrollingElement;
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} else {
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scrollable = this.node.querySelector('.scrollable');
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// Some columns have nested `.scrollable` containers, with the outer one
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// being a wrapper while the actual scrollable content is deeper.
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if (scrollable.classList.contains('scrollable--flex')) {
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scrollable = scrollable?.querySelector('.scrollable') || scrollable;
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}
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}
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if (!scrollable) {
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return;
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}
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this._interruptScrollAnimation = scrollTop(scrollable);
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}
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handleWheel = () => {
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if (typeof this._interruptScrollAnimation !== 'function') {
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return;
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}
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this._interruptScrollAnimation();
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};
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setRef = c => {
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this.node = c;
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};
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componentDidMount () {
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if (this.props.bindToDocument) {
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document.addEventListener('wheel', this.handleWheel, listenerOptions);
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} else {
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this.node.addEventListener('wheel', this.handleWheel, listenerOptions);
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}
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}
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componentWillUnmount () {
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if (this.props.bindToDocument) {
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document.removeEventListener('wheel', this.handleWheel, listenerOptions);
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} else {
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this.node.removeEventListener('wheel', this.handleWheel, listenerOptions);
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}
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}
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render () {
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const { label, children } = this.props;
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return (
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<div role='region' aria-label={label} className='column' ref={this.setRef}>
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{children}
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</div>
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);
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}
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}
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