104 lines
2.6 KiB
JavaScript
104 lines
2.6 KiB
JavaScript
// @flow
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import React, { Component } 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 styled from 'styled-components';
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import Portal from 'react-portal';
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import Flex from 'components/Flex';
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import { color } from 'shared/styles/constants';
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import { fadeAndScaleIn } from 'shared/styles/animations';
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type Props = {
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label: React.Element<*>,
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onOpen?: () => void,
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onClose?: () => void,
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children?: React.Element<*>,
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style?: Object,
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};
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@observer class DropdownMenu extends Component {
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props: Props;
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actionRef: Object;
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@observable open: boolean = false;
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@observable top: number;
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@observable left: number;
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@observable right: number;
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handleClick = (ev: SyntheticEvent) => {
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ev.preventDefault();
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ev.stopPropagation();
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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.open = true;
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this.top = targetRect.bottom - bodyRect.top;
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this.right = bodyRect.width - targetRect.left - targetRect.width;
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if (this.props.onOpen) this.props.onOpen();
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}
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};
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handleClose = (ev: SyntheticEvent) => {
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this.open = false;
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if (this.props.onClose) this.props.onClose();
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};
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render() {
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return (
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<div>
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<Label
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onClick={this.handleClick}
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innerRef={ref => (this.actionRef = ref)}
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>
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{this.props.label}
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</Label>
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<Portal
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closeOnEsc
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closeOnOutsideClick
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isOpened={this.open}
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onClose={this.handleClose}
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>
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<Menu
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onClick={this.handleClose}
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style={this.props.style}
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left={this.left}
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top={this.top}
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right={this.right}
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>
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{this.props.children}
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</Menu>
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</Portal>
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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 Menu = styled.div`
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animation: ${fadeAndScaleIn} 200ms ease;
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transform-origin: 75% 0;
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position: absolute;
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right: ${({ right }) => right}px;
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top: ${({ top }) => top}px;
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z-index: 1000;
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border: ${color.slateLight};
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background: ${color.white};
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border-radius: 2px;
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min-width: 160px;
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overflow: hidden;
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box-shadow: 0 0 0 1px rgba(0,0,0,.05), 0 4px 8px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.08);
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`;
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export default DropdownMenu;
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