Files
sanasto-app/components/Modal.jsx
Max Lynch fc7b7649d3 Safe area
2020-12-22 13:02:06 -06:00

93 lines
2.1 KiB
JavaScript

import classNames from 'classnames';
import { useCallback, useEffect, useLayoutEffect, useRef, useState } from 'react';
import { useDrag } from 'react-use-gesture';
import Store from '../store';
const Modal = ({ open, onClose, children }) => {
const ref = useRef();
const [dragging, setDragging] = useState(false);
const [rect, setRect] = useState(null);
const [y, setY] = useState(100000);
const safeAreaTop = Store.useState(s => s.safeAreaTop);
const _open = useCallback(() => {
console.log('Opening modal!', safeAreaTop);
setY(safeAreaTop);
}, [safeAreaTop]);
const _close = useCallback(() => {
if (!rect) {
return;
}
setY(rect.height + safeAreaTop);
}, [safeAreaTop, rect]);
// Get the layout rectangle for the modal
useLayoutEffect(() => {
const rect = ref.current?.getBoundingClientRect();
setRect(rect);
_close();
}, [safeAreaTop]);
// If open changes, open/close the modal
useLayoutEffect(() => {
if (open) {
_open();
} else {
_close();
}
}, [rect, open, _open, _close]);
const bind = useDrag(
({ down, movement: [mx, my] }) => {
setY(my < 0 ? safeAreaTop : my + safeAreaTop);
if (down) {
setDragging(true);
} else {
setDragging(false);
}
// If the drag ended, snap the menu back open or close it
if (!down) {
const mid = rect.height;
if (y > mid / 2) {
// Close
_close();
onClose();
} else {
// Re-open
_open();
}
}
},
{
axis: 'y',
}
);
return (
<div
ref={ref}
{...bind()}
className={classNames(
'fixed z-40 top-5 transform transform-gpu ranslate w-full h-full bg-white rounded-t-xl',
{
'ease-in-out duration-300 transition-transformation': !dragging,
}
)}
style={{
'--safe-area-top': `env(safe-area-inset-top, 0px)`,
height: `calc(100% - env(safe-area-inset-top, 0px) - 1.25rem)`,
touchAction: 'pan-y',
transform: `translateY(${y}px)`,
}}
>
{children}
</div>
);
};
export default Modal;