107 lines
2.6 KiB
JavaScript
107 lines
2.6 KiB
JavaScript
// @flow
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import { useEffect, useRef, useState } from 'react';
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import ReactDOM from 'react-dom';
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type Props = {
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/**
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* The component(s) to be displayed within the drawer portal.
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*/
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children: React$Node,
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/**
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* Custom class name to apply on the container div.
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*/
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className?: string,
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/**
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* Function used to get the refferrence to the container div.
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*/
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getRef?: Function,
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/**
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* Function used to get the updated size info of the container on it's resize.
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*/
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setSize?: Function,
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/**
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* Custom style to apply to the container div.
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*/
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style?: Object,
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};
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/**
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* Component meant to render a drawer at the bottom of the screen,
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* by creating a portal containing the component's children.
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*
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* @returns {ReactElement}
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*/
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function DialogPortal({ children, className, style, getRef, setSize }: Props) {
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const [ portalTarget ] = useState(() => {
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const portalDiv = document.createElement('div');
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portalDiv.style.visibility = 'hidden';
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return portalDiv;
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});
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const timerRef = useRef();
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useEffect(() => {
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if (style) {
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for (const styleProp of Object.keys(style)) {
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// https://github.com/facebook/flow/issues/3733
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const objStyle: Object = portalTarget.style;
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objStyle[styleProp] = style[styleProp];
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}
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}
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if (className) {
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portalTarget.className = className;
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}
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}, [ style, className ]);
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useEffect(() => {
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if (portalTarget && getRef) {
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getRef(portalTarget);
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}
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}, [ portalTarget ]);
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useEffect(() => {
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const size = {
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width: 1,
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height: 1
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};
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const observer = new ResizeObserver(entries => {
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const { contentRect } = entries[0];
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if (contentRect.width !== size.width || contentRect.height !== size.height) {
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setSize && setSize(contentRect);
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clearTimeout(timerRef.current);
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timerRef.current = setTimeout(() => {
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portalTarget.style.visibility = 'visible';
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}, 100);
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}
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});
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if (document.body) {
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document.body.appendChild(portalTarget);
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observer.observe(portalTarget);
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}
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return () => {
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observer.unobserve(portalTarget);
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if (document.body) {
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document.body.removeChild(portalTarget);
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}
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};
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}, []);
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return ReactDOM.createPortal(
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children,
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portalTarget
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);
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}
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export default DialogPortal;
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