153 lines
4.2 KiB
JavaScript
153 lines
4.2 KiB
JavaScript
// @flow
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import * as React from 'react';
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import invariant from 'invariant';
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import { observable } from 'mobx';
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import { observer } from 'mobx-react';
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import { PortalWithState } from 'react-portal';
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import { MoreIcon } from 'outline-icons';
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import styled from 'styled-components';
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import Flex from 'shared/components/Flex';
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import { fadeAndScaleIn } from 'shared/styles/animations';
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import NudeButton from 'components/NudeButton';
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let previousClosePortal;
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type Children =
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| React.Node
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| ((options: { closePortal: () => void }) => React.Node);
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type Props = {
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label?: React.Node,
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onOpen?: () => void,
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onClose?: () => void,
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children?: Children,
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className?: string,
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style?: Object,
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position?: 'left' | 'right' | 'center',
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};
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@observer
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class DropdownMenu extends React.Component<Props> {
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@observable top: number;
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@observable right: number;
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@observable left: number;
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handleOpen = (
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openPortal: (SyntheticEvent<>) => void,
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closePortal: () => void
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) => {
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return (ev: SyntheticMouseEvent<HTMLElement>) => {
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ev.preventDefault();
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const currentTarget = ev.currentTarget;
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invariant(document.body, 'why you not here');
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if (currentTarget instanceof HTMLDivElement) {
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const bodyRect = document.body.getBoundingClientRect();
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const targetRect = currentTarget.getBoundingClientRect();
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this.top = targetRect.bottom - bodyRect.top;
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if (this.props.position === 'left') {
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this.left = targetRect.left;
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} else if (this.props.position === 'center') {
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this.left = targetRect.left + targetRect.width / 2;
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} else {
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this.right = bodyRect.width - targetRect.left - targetRect.width;
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}
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// attempt to keep only one flyout menu open at once
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if (previousClosePortal) {
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previousClosePortal();
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}
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previousClosePortal = closePortal;
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openPortal(ev);
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}
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};
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};
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render() {
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const { className, label, position, children } = this.props;
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return (
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<div className={className}>
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<PortalWithState
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onOpen={this.props.onOpen}
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onClose={this.props.onClose}
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closeOnOutsideClick
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closeOnEsc
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>
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{({ closePortal, openPortal, portal }) => (
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<React.Fragment>
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<Label onClick={this.handleOpen(openPortal, closePortal)}>
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{label || (
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<NudeButton>
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<MoreIcon />
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</NudeButton>
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)}
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</Label>
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{portal(
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<Position
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position={position}
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top={this.top}
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left={this.left}
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right={this.right}
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>
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<Menu
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onClick={
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typeof children === 'function'
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? undefined
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: ev => {
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ev.stopPropagation();
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closePortal();
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}
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}
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style={this.props.style}
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>
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{typeof children === 'function'
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? children({ closePortal })
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: children}
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</Menu>
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</Position>
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)}
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</React.Fragment>
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)}
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</PortalWithState>
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</div>
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);
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}
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}
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const Label = styled(Flex).attrs({
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justify: 'center',
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align: 'center',
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})`
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z-index: 1000;
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cursor: pointer;
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`;
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const Position = styled.div`
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position: absolute;
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${({ left }) => (left !== undefined ? `left: ${left}px` : '')};
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${({ right }) => (right !== undefined ? `right: ${right}px` : '')};
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top: ${({ top }) => top}px;
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z-index: 1000;
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transform: ${props =>
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props.position === 'center' ? 'translateX(-50%)' : 'initial'};
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`;
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const Menu = styled.div`
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animation: ${fadeAndScaleIn} 200ms ease;
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transform-origin: ${props => (props.left !== undefined ? '25%' : '75%')} 0;
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background: ${props => props.theme.menuBackground};
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border-radius: 2px;
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padding: 0.5em 0;
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min-width: 180px;
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overflow: hidden;
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box-shadow: ${props => props.theme.menuShadow};
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@media print {
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display: none;
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}
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`;
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export default DropdownMenu;
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