import { PureComponent, cloneElement, Children } from 'react'; import PropTypes from 'prop-types'; import ImmutablePropTypes from 'react-immutable-proptypes'; import { IconButton } from './icon_button'; import Overlay from 'react-overlays/Overlay'; import { supportsPassiveEvents } from 'detect-passive-events'; import classNames from 'classnames'; import { CircularProgress } from 'mastodon/components/loading_indicator'; const listenerOptions = supportsPassiveEvents ? { passive: true, capture: true } : true; let id = 0; class DropdownMenu extends PureComponent { static contextTypes = { router: PropTypes.object, }; static propTypes = { items: PropTypes.oneOfType([PropTypes.array, ImmutablePropTypes.list]).isRequired, loading: PropTypes.bool, scrollable: PropTypes.bool, onClose: PropTypes.func.isRequired, style: PropTypes.object, openedViaKeyboard: PropTypes.bool, renderItem: PropTypes.func, renderHeader: PropTypes.func, onItemClick: PropTypes.func.isRequired, }; static defaultProps = { style: {}, }; handleDocumentClick = e => { if (this.node && !this.node.contains(e.target)) { this.props.onClose(); e.stopPropagation(); } }; componentDidMount () { document.addEventListener('click', this.handleDocumentClick, { capture: true }); document.addEventListener('keydown', this.handleKeyDown, { capture: true }); document.addEventListener('touchend', this.handleDocumentClick, listenerOptions); if (this.focusedItem && this.props.openedViaKeyboard) { this.focusedItem.focus({ preventScroll: true }); } } componentWillUnmount () { document.removeEventListener('click', this.handleDocumentClick, { capture: true }); document.removeEventListener('keydown', this.handleKeyDown, { capture: true }); document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions); } setRef = c => { this.node = c; }; setFocusRef = c => { this.focusedItem = c; }; handleKeyDown = e => { const items = Array.from(this.node.querySelectorAll('a, button')); const index = items.indexOf(document.activeElement); let element = null; switch(e.key) { case 'ArrowDown': element = items[index+1] || items[0]; break; case 'ArrowUp': element = items[index-1] || items[items.length-1]; break; case 'Tab': if (e.shiftKey) { element = items[index-1] || items[items.length-1]; } else { element = items[index+1] || items[0]; } break; case 'Home': element = items[0]; break; case 'End': element = items[items.length-1]; break; case 'Escape': this.props.onClose(); break; } if (element) { element.focus(); e.preventDefault(); e.stopPropagation(); } }; handleItemKeyPress = e => { if (e.key === 'Enter' || e.key === ' ') { this.handleClick(e); } }; handleClick = e => { const { onItemClick } = this.props; onItemClick(e); }; renderItem = (option, i) => { if (option === null) { return
  • ; } const { text, href = '#', target = '_blank', method } = option; return (
  • {text}
  • ); }; render () { const { items, scrollable, renderHeader, loading } = this.props; let renderItem = this.props.renderItem || this.renderItem; return (
    {loading && ( )} {!loading && renderHeader && (
    {renderHeader(items)}
    )} {!loading && ( )}
    ); } } export default class Dropdown extends PureComponent { static contextTypes = { router: PropTypes.object, }; static propTypes = { children: PropTypes.node, icon: PropTypes.string, items: PropTypes.oneOfType([PropTypes.array, ImmutablePropTypes.list]).isRequired, loading: PropTypes.bool, size: PropTypes.number, title: PropTypes.string, disabled: PropTypes.bool, scrollable: PropTypes.bool, status: ImmutablePropTypes.map, isUserTouching: PropTypes.func, onOpen: PropTypes.func.isRequired, onClose: PropTypes.func.isRequired, openDropdownId: PropTypes.number, openedViaKeyboard: PropTypes.bool, renderItem: PropTypes.func, renderHeader: PropTypes.func, onItemClick: PropTypes.func, }; static defaultProps = { title: 'Menu', }; state = { id: id++, }; handleClick = ({ type }) => { if (this.state.id === this.props.openDropdownId) { this.handleClose(); } else { this.props.onOpen(this.state.id, this.handleItemClick, type !== 'click'); } }; handleClose = () => { if (this.activeElement) { this.activeElement.focus({ preventScroll: true }); this.activeElement = null; } this.props.onClose(this.state.id); }; handleMouseDown = () => { if (!this.state.open) { this.activeElement = document.activeElement; } }; handleButtonKeyDown = (e) => { switch(e.key) { case ' ': case 'Enter': this.handleMouseDown(); break; } }; handleKeyPress = (e) => { switch(e.key) { case ' ': case 'Enter': this.handleClick(e); e.stopPropagation(); e.preventDefault(); break; } }; handleItemClick = e => { const { onItemClick } = this.props; const i = Number(e.currentTarget.getAttribute('data-index')); const item = this.props.items[i]; this.handleClose(); if (typeof onItemClick === 'function') { e.preventDefault(); onItemClick(item, i); } else if (item && typeof item.action === 'function') { e.preventDefault(); item.action(); } else if (item && item.to) { e.preventDefault(); this.context.router.history.push(item.to); } }; setTargetRef = c => { this.target = c; }; findTarget = () => { return this.target; }; componentWillUnmount = () => { if (this.state.id === this.props.openDropdownId) { this.handleClose(); } }; close = () => { this.handleClose(); }; render () { const { icon, items, size, title, disabled, loading, scrollable, openDropdownId, openedViaKeyboard, children, renderItem, renderHeader, } = this.props; const open = this.state.id === openDropdownId; const button = children ? cloneElement(Children.only(children), { onClick: this.handleClick, onMouseDown: this.handleMouseDown, onKeyDown: this.handleButtonKeyDown, onKeyPress: this.handleKeyPress, }) : ( ); return ( <> {button} {({ props, arrowProps, placement }) => (
    )} ); } }