65 lines
1.7 KiB
JavaScript
65 lines
1.7 KiB
JavaScript
// @flow
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import React, { useRef, useState } from 'react';
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import classnames from 'classnames';
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import Button from 'component/button';
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import { useOnResize } from 'effects/use-on-resize';
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const COLLAPSED_HEIGHT = 120;
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type Props = {
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children: React$Node | Array<React$Node>,
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};
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export default function Expandable(props: Props) {
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const [expanded, setExpanded] = useState(false);
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const [rect, setRect] = useState();
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const { children } = props;
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const ref = useRef();
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// Update the rect initially & when the window size changes.
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useOnResize(() => {
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if (ref.current) {
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setRect(ref.current.getBoundingClientRect());
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}
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});
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// Update the rect when children changes,
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// not sure if this is needed but a situation could arise when the
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// component re-renders with a different children prop,
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// Can enable on a later date if needed.
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// useLayoutEffect(() => {
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// console.log('render, useLayoutEffect');
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// if (ref.current) {
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// setRect(ref.current.getBoundingClientRect());
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// }
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// }, [children]);
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function handleClick() {
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setExpanded(!expanded);
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}
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return (
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<div ref={ref}>
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{rect && rect.height > COLLAPSED_HEIGHT ? (
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<div ref={ref}>
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<div
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className={classnames({
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'expandable--open': expanded,
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'expandable--closed': !expanded,
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})}
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>
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{children}
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</div>
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<Button
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button="link"
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className="expandable__button"
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label={expanded ? __('Less') : __('More')}
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onClick={handleClick}
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/>
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</div>
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) : (
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<div>{children}</div>
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)}
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</div>
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);
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}
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