forked from treehouse/mastodon
137 lines
3.8 KiB
JavaScript
137 lines
3.8 KiB
JavaScript
import React from 'react';
|
|
import PropTypes from 'prop-types';
|
|
import 'wicg-inert';
|
|
import createHistory from 'history/createBrowserHistory';
|
|
|
|
export default class ModalRoot extends React.PureComponent {
|
|
static contextTypes = {
|
|
router: PropTypes.object,
|
|
};
|
|
|
|
static propTypes = {
|
|
children: PropTypes.node,
|
|
onClose: PropTypes.func.isRequired,
|
|
noEsc: PropTypes.bool,
|
|
};
|
|
|
|
state = {
|
|
revealed: !!this.props.children,
|
|
};
|
|
|
|
activeElement = this.state.revealed ? document.activeElement : null;
|
|
|
|
handleKeyUp = (e) => {
|
|
if ((e.key === 'Escape' || e.key === 'Esc' || e.keyCode === 27)
|
|
&& !!this.props.children && !this.props.noEsc) {
|
|
this.props.onClose();
|
|
}
|
|
}
|
|
|
|
handleKeyDown = (e) => {
|
|
if (e.key === 'Tab') {
|
|
const focusable = Array.from(this.node.querySelectorAll('button:not([disabled]), [href], input:not([disabled]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])')).filter((x) => window.getComputedStyle(x).display !== 'none');
|
|
const index = focusable.indexOf(e.target);
|
|
|
|
let element;
|
|
|
|
if (e.shiftKey) {
|
|
element = focusable[index - 1] || focusable[focusable.length - 1];
|
|
} else {
|
|
element = focusable[index + 1] || focusable[0];
|
|
}
|
|
|
|
if (element) {
|
|
element.focus();
|
|
e.stopPropagation();
|
|
e.preventDefault();
|
|
}
|
|
}
|
|
}
|
|
|
|
componentDidMount () {
|
|
window.addEventListener('keyup', this.handleKeyUp, false);
|
|
window.addEventListener('keydown', this.handleKeyDown, false);
|
|
this.history = this.context.router ? this.context.router.history : createHistory();
|
|
}
|
|
|
|
componentWillReceiveProps (nextProps) {
|
|
if (!!nextProps.children && !this.props.children) {
|
|
this.activeElement = document.activeElement;
|
|
|
|
this.getSiblings().forEach(sibling => sibling.setAttribute('inert', true));
|
|
} else if (!nextProps.children) {
|
|
this.setState({ revealed: false });
|
|
}
|
|
if (!nextProps.children && !!this.props.children) {
|
|
this.activeElement.focus({ preventScroll: true });
|
|
this.activeElement = null;
|
|
}
|
|
}
|
|
|
|
componentDidUpdate (prevProps) {
|
|
if (!this.props.children && !!prevProps.children) {
|
|
this.getSiblings().forEach(sibling => sibling.removeAttribute('inert'));
|
|
this.handleModalClose();
|
|
}
|
|
if (this.props.children) {
|
|
requestAnimationFrame(() => {
|
|
this.setState({ revealed: true });
|
|
});
|
|
if (!prevProps.children) this.handleModalOpen();
|
|
}
|
|
}
|
|
|
|
componentWillUnmount () {
|
|
window.removeEventListener('keyup', this.handleKeyUp);
|
|
window.removeEventListener('keydown', this.handleKeyDown);
|
|
}
|
|
|
|
handleModalClose () {
|
|
this.unlistenHistory();
|
|
|
|
const state = this.history.location.state;
|
|
if (state && state.mastodonModalOpen) {
|
|
this.history.goBack();
|
|
}
|
|
}
|
|
|
|
handleModalOpen () {
|
|
const history = this.history;
|
|
const state = {...history.location.state, mastodonModalOpen: true};
|
|
history.push(history.location.pathname, state);
|
|
this.unlistenHistory = history.listen(() => {
|
|
this.props.onClose();
|
|
});
|
|
}
|
|
|
|
getSiblings = () => {
|
|
return Array(...this.node.parentElement.childNodes).filter(node => node !== this.node);
|
|
}
|
|
|
|
setRef = ref => {
|
|
this.node = ref;
|
|
}
|
|
|
|
render () {
|
|
const { children, onClose } = this.props;
|
|
const { revealed } = this.state;
|
|
const visible = !!children;
|
|
|
|
if (!visible) {
|
|
return (
|
|
<div className='modal-root' ref={this.setRef} style={{ opacity: 0 }} />
|
|
);
|
|
}
|
|
|
|
return (
|
|
<div className='modal-root' ref={this.setRef} style={{ opacity: revealed ? 1 : 0 }}>
|
|
<div style={{ pointerEvents: visible ? 'auto' : 'none' }}>
|
|
<div role='presentation' className='modal-root__overlay' onClick={onClose} />
|
|
<div role='dialog' className='modal-root__container'>{children}</div>
|
|
</div>
|
|
</div>
|
|
);
|
|
}
|
|
|
|
}
|