120 lines
3.0 KiB
JavaScript
120 lines
3.0 KiB
JavaScript
// @flow
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import React, { useEffect, useRef, useState } from 'react';
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import { translate } from '../../../base/i18n';
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import { Icon, IconArrowUpWide, IconArrowDownWide } from '../../../base/icons';
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type Props = {
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/**
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* Whether the drawer should have a button that expands its size or not.
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*/
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canExpand: ?boolean,
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/**
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* The component(s) to be displayed within the drawer menu.
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*/
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children: React$Node,
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/**
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Whether the drawer should be shown or not.
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*/
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isOpen: boolean,
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/**
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Function that hides the drawer.
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*/
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onClose: Function,
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/**
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* Invoked to obtain translated strings.
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*/
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t: Function
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};
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/**
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* Component that displays the mobile friendly drawer on web.
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*
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* @returns {ReactElement}
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*/
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function Drawer({
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canExpand,
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children,
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isOpen,
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onClose,
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t }: Props) {
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const [ expanded, setExpanded ] = useState(false);
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const drawerRef: Object = useRef(null);
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/**
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* Closes the drawer when clicking outside of it.
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*
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* @param {Event} event - Mouse down event object.
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* @returns {void}
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*/
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function handleOutsideClick(event: MouseEvent) {
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if (drawerRef.current && !drawerRef.current.contains(event.target)) {
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onClose();
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}
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}
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useEffect(() => {
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window.addEventListener('mousedown', handleOutsideClick);
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return () => {
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window.removeEventListener('mousedown', handleOutsideClick);
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};
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}, [ drawerRef ]);
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/**
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* Toggles the menu state between expanded/collapsed.
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*
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* @returns {void}
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*/
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function toggleExpanded() {
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setExpanded(!expanded);
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}
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/**
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* KeyPress handler for accessibility.
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*
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* @param {React.KeyboardEventHandler<HTMLDivElement>} e - The key event to handle.
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*
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* @returns {void}
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*/
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function onKeyPress(e) {
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if (e.key === ' ' || e.key === 'Enter') {
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e.preventDefault();
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toggleExpanded();
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}
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}
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return (
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isOpen ? (
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<div
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className = { `drawer-menu${expanded ? ' expanded' : ''}` }
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ref = { drawerRef }>
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{canExpand && (
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<div
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aria-expanded = { expanded }
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aria-label = { expanded ? t('toolbar.accessibilityLabel.collapse')
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: t('toolbar.accessibilityLabel.expand') }
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className = 'drawer-toggle'
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onClick = { toggleExpanded }
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onKeyPress = { onKeyPress }
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role = 'button'
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tabIndex = { 0 }>
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<Icon
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size = { 24 }
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src = { expanded ? IconArrowDownWide : IconArrowUpWide } />
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</div>
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)}
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{children}
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</div>
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) : null
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);
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}
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export default translate(Drawer);
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