forked from treehouse/mastodon
85 lines
2.2 KiB
JavaScript
85 lines
2.2 KiB
JavaScript
import React from 'react';
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import PropTypes from 'prop-types';
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export default class ModalRoot extends React.PureComponent {
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static propTypes = {
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children: PropTypes.node,
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onClose: PropTypes.func.isRequired,
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};
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state = {
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revealed: !!this.props.children,
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};
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activeElement = this.state.revealed ? document.activeElement : null;
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handleKeyUp = (e) => {
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if ((e.key === 'Escape' || e.key === 'Esc' || e.keyCode === 27)
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&& !!this.props.children) {
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this.props.onClose();
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}
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}
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componentDidMount () {
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window.addEventListener('keyup', this.handleKeyUp, false);
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}
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componentWillReceiveProps (nextProps) {
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if (!!nextProps.children && !this.props.children) {
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this.activeElement = document.activeElement;
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this.getSiblings().forEach(sibling => sibling.setAttribute('inert', true));
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} else if (!nextProps.children) {
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this.setState({ revealed: false });
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}
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}
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componentDidUpdate (prevProps) {
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if (!this.props.children && !!prevProps.children) {
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this.getSiblings().forEach(sibling => sibling.removeAttribute('inert'));
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this.activeElement.focus();
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this.activeElement = null;
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}
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if (this.props.children) {
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requestAnimationFrame(() => {
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this.setState({ revealed: true });
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});
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}
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}
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componentWillUnmount () {
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window.removeEventListener('keyup', this.handleKeyUp);
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}
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getSiblings = () => {
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return Array(...this.node.parentElement.childNodes).filter(node => node !== this.node);
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}
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setRef = ref => {
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this.node = ref;
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}
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render () {
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const { children, onClose } = this.props;
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const { revealed } = this.state;
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const visible = !!children;
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if (!visible) {
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return (
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<div className='modal-root' ref={this.setRef} style={{ opacity: 0 }} />
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);
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}
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return (
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<div className='modal-root' ref={this.setRef} style={{ opacity: revealed ? 1 : 0 }}>
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<div style={{ pointerEvents: visible ? 'auto' : 'none' }}>
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<div role='presentation' className='modal-root__overlay' onClick={onClose} />
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<div role='dialog' className='modal-root__container'>{children}</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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