import React from 'react'; import PropTypes from 'prop-types'; import ImmutablePropTypes from 'react-immutable-proptypes'; import IconButton from './icon_button'; import Overlay from 'react-overlays/lib/Overlay'; import Motion from '../features/ui/util/optional_motion'; import spring from 'react-motion/lib/spring'; import detectPassiveEvents from 'detect-passive-events'; const listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false; class DropdownMenu extends React.PureComponent { static contextTypes = { router: PropTypes.object, }; static propTypes = { items: PropTypes.array.isRequired, onClose: PropTypes.func.isRequired, style: PropTypes.object, placement: PropTypes.string, arrowOffsetLeft: PropTypes.string, arrowOffsetTop: PropTypes.string, }; static defaultProps = { style: {}, placement: 'bottom', }; state = { mounted: false, }; handleDocumentClick = e => { if (this.node && !this.node.contains(e.target)) { this.props.onClose(); } } componentDidMount () { document.addEventListener('click', this.handleDocumentClick, false); document.addEventListener('touchend', this.handleDocumentClick, listenerOptions); this.setState({ mounted: true }); } componentWillUnmount () { document.removeEventListener('click', this.handleDocumentClick, false); document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions); } setRef = c => { this.node = c; } handleClick = e => { const i = Number(e.currentTarget.getAttribute('data-index')); const { action, to } = this.props.items[i]; this.props.onClose(); if (typeof action === 'function') { e.preventDefault(); action(); } else if (to) { e.preventDefault(); this.context.router.history.push(to); } } renderItem (option, i) { if (option === null) { return
  • ; } const { text, href = '#' } = option; return (
  • {text}
  • ); } render () { const { items, style, placement, arrowOffsetLeft, arrowOffsetTop } = this.props; const { mounted } = this.state; return ( {({ opacity, scaleX, scaleY }) => ( // It should not be transformed when mounting because the resulting // size will be used to determine the coordinate of the menu by // react-overlays
      {items.map((option, i) => this.renderItem(option, i))}
    )} ); } } export default class Dropdown extends React.PureComponent { static contextTypes = { router: PropTypes.object, }; static propTypes = { icon: PropTypes.string.isRequired, items: PropTypes.array.isRequired, size: PropTypes.number.isRequired, title: PropTypes.string, disabled: PropTypes.bool, status: ImmutablePropTypes.map, isUserTouching: PropTypes.func, isModalOpen: PropTypes.bool.isRequired, onModalOpen: PropTypes.func, onModalClose: PropTypes.func, }; static defaultProps = { title: 'Menu', }; state = { placement: null, }; handleClick = ({ target }) => { if (this.state.placement) { this.setState({ placement: null }); } else if (this.props.isUserTouching() && this.props.onModalOpen) { const { status, items } = this.props; this.props.onModalOpen({ status, actions: items, onClick: this.handleItemClick, }); } else { const { top } = target.getBoundingClientRect(); this.setState({ placement: top * 2 < innerHeight ? 'bottom' : 'top' }); } } handleClose = () => { if (this.props.onModalClose) { this.props.onModalClose(); } this.setState({ placement: null }); } handleKeyDown = e => { switch(e.key) { case 'Enter': this.handleClick(); break; case 'Escape': this.handleClose(); break; } } handleItemClick = e => { const i = Number(e.currentTarget.getAttribute('data-index')); const { action, to } = this.props.items[i]; this.handleClose(); if (typeof action === 'function') { e.preventDefault(); action(); } else if (to) { e.preventDefault(); this.context.router.history.push(to); } } setTargetRef = c => { this.target = c; } findTarget = () => { return this.target; } render () { const { icon, items, size, title, disabled } = this.props; const { placement } = this.state; const show = placement !== null; return (
    ); } }