This repository has been archived on 2022-08-14. You can view files and clone it, but cannot push or open issues or pull requests.
outline/app/components/DropdownMenu/DropdownMenu.js

107 lines
2.7 KiB
JavaScript

// @flow
import * as React from 'react';
import invariant from 'invariant';
import { observable } from 'mobx';
import { observer } from 'mobx-react';
import styled from 'styled-components';
import { PortalWithState } from 'react-portal';
import Flex from 'shared/components/Flex';
import { color } from 'shared/styles/constants';
import { fadeAndScaleIn } from 'shared/styles/animations';
type Props = {
label: React.Node,
onOpen?: () => void,
onClose?: () => void,
children?: React.Node,
className?: string,
style?: Object,
};
@observer
class DropdownMenu extends React.Component<Props> {
@observable top: number;
@observable right: number;
handleOpen = (openPortal: (SyntheticEvent<*>) => *) => {
return (ev: SyntheticMouseEvent<*>) => {
ev.preventDefault();
const currentTarget = ev.currentTarget;
invariant(document.body, 'why you not here');
if (currentTarget instanceof HTMLDivElement) {
const bodyRect = document.body.getBoundingClientRect();
const targetRect = currentTarget.getBoundingClientRect();
this.top = targetRect.bottom - bodyRect.top;
this.right = bodyRect.width - targetRect.left - targetRect.width;
openPortal(ev);
}
};
};
render() {
const { className, label, children } = this.props;
return (
<div className={className}>
<PortalWithState
onOpen={this.props.onOpen}
onClose={this.props.onClose}
closeOnOutsideClick
closeOnEsc
>
{({ closePortal, openPortal, portal }) => (
<React.Fragment>
<Label onClick={this.handleOpen(openPortal)}>{label}</Label>
{portal(
<Menu
onClick={ev => {
ev.stopPropagation();
closePortal();
}}
style={this.props.style}
top={this.top}
right={this.right}
>
{children}
</Menu>
)}
</React.Fragment>
)}
</PortalWithState>
</div>
);
}
}
const Label = styled(Flex).attrs({
justify: 'center',
align: 'center',
})`
z-index: 1000;
cursor: pointer;
`;
const Menu = styled.div`
animation: ${fadeAndScaleIn} 200ms ease;
transform-origin: 75% 0;
position: absolute;
right: ${({ right }) => right}px;
top: ${({ top }) => top}px;
z-index: 1000;
border: ${color.slateLight};
background: ${color.white};
border-radius: 2px;
min-width: 160px;
overflow: hidden;
box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05), 0 4px 8px rgba(0, 0, 0, 0.08),
0 2px 4px rgba(0, 0, 0, 0.08);
@media print {
display: none;
}
`;
export default DropdownMenu;