joplin/packages/app-desktop/gui/Dialog.tsx

import { useEffect, useCallback } from 'react';
import styled from 'styled-components';

const DialogModalLayer = styled.div`
	z-index: 9999;
	display: flex;
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(0,0,0,0.6);
	align-items: flex-start;
	justify-content: center;
	overflow: hidden;
`;

const DialogRoot = styled.div`
	background-color: ${props => props.theme.backgroundColor};
	padding: 16px;
	box-shadow: 6px 6px 20px rgba(0,0,0,0.5);
	margin: 20px;
	min-height: fit-content;
	display: flex;
	flex-direction: column;
	border-radius: 10px;
`;

interface Props {
	renderContent: Function;
	className?: string;
	onClose?: Function;
}

export default function Dialog(props: Props) {
	const onWindowKeydown = useCallback((event: any) => {
		if (event.key === 'Escape') {
			if (props.onClose) props.onClose();
		}
	}, [props.onClose]);

	useEffect(() => {
		window.addEventListener('keydown', onWindowKeydown);

		return () => {
			window.removeEventListener('keydown', onWindowKeydown);
		};
	}, [onWindowKeydown]);

	return (
		<DialogModalLayer className={props.className}>
			<DialogRoot>
				{props.renderContent()}
			</DialogRoot>
		</DialogModalLayer>
	);
}