grommet
Version:
focus on the essential experience
107 lines • 5.07 kB
JavaScript
function _extends() { return _extends = Object.assign ? Object.assign.bind() : function (n) { for (var e = 1; e < arguments.length; e++) { var t = arguments[e]; for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]); } return n; }, _extends.apply(null, arguments); }
import React, { forwardRef, useContext, useEffect, useRef, useState } from 'react';
import { createPortal } from 'react-dom';
import { useLayoutEffect } from '../../utils/use-isomorphic-layout-effect';
import { getNewContainer } from '../../utils';
import { LayerContainer } from './LayerContainer';
import { animationDuration } from './StyledLayer';
import { ContainerTargetContext } from '../../contexts/ContainerTargetContext';
import { LayerPropTypes } from './propTypes';
var Layer = /*#__PURE__*/forwardRef(function (props, ref) {
var animate = props.animate,
animation = props.animation,
_props$modal = props.modal,
modal = _props$modal === void 0 ? true : _props$modal,
targetChildPosition = props.targetChildPosition;
var _useState = useState(),
layerContainer = _useState[0],
setLayerContainer = _useState[1];
var containerTarget = useContext(ContainerTargetContext);
var originalFocusedElementRef = useRef(null);
var focusWithinLayerRef = useRef(false);
useEffect(function () {
originalFocusedElementRef.current = document.activeElement;
}, []);
useEffect(function () {
var handleFocusIn = function handleFocusIn(event) {
if (layerContainer != null && layerContainer.contains != null && layerContainer.contains(event.target)) {
focusWithinLayerRef.current = true;
}
};
var handleFocusOut = function handleFocusOut(event) {
if (layerContainer != null && layerContainer.contains != null && layerContainer.contains(event.target) && !layerContainer.contains(event.relatedTarget)) {
focusWithinLayerRef.current = false;
}
};
document.addEventListener('focusin', handleFocusIn);
document.addEventListener('focusout', handleFocusOut);
return function () {
document.removeEventListener('focusin', handleFocusIn);
document.removeEventListener('focusout', handleFocusOut);
};
}, [layerContainer]);
useEffect(function () {
return setLayerContainer(getNewContainer(containerTarget, targetChildPosition));
}, [containerTarget, targetChildPosition]);
// just a few things to clean up when the Layer is unmounted
useLayoutEffect(function () {
return function () {
var originalFocusedElement = originalFocusedElementRef.current;
if (originalFocusedElement) {
// Restore focus if:
// - modal layer (always restore), or
// - non-modal layer that had focus when it closed
var shouldRestoreFocus = modal || !modal && focusWithinLayerRef.current;
if (shouldRestoreFocus && originalFocusedElement.focus) {
// wait for the fixed positioning to come back to normal
// see layer styling for reference
setTimeout(function () {
return originalFocusedElement.focus();
}, 0);
} else if (originalFocusedElement.parentNode && originalFocusedElement.parentNode.focus) {
// required for IE11 and Edge
originalFocusedElement.parentNode.focus();
}
}
if (layerContainer) {
var activeAnimation = animation !== undefined ? animation : animate;
if (activeAnimation !== false) {
// undefined uses 'slide' as the default
// animate out and remove later
var layerClone = layerContainer.cloneNode(true);
layerClone.id = 'layerClone';
containerTarget.appendChild(layerClone);
var clonedContainer = layerClone.querySelector('[class*="StyledLayer__StyledContainer"]');
if (clonedContainer && clonedContainer.style) {
clonedContainer.style.animationDirection = 'reverse';
}
setTimeout(function () {
// we add the id and query here so the unit tests work
var rootNode = containerTarget.getRootNode();
// Not all root nodes (ShadowRoot, DocumentFragment)
// have getElementById.
if (rootNode && typeof rootNode.getElementById === 'function') {
var clone = rootNode.getElementById('layerClone');
if (clone) {
if (containerTarget.contains(clone)) {
containerTarget.removeChild(clone);
}
layerContainer.remove();
}
}
}, animationDuration);
} else if (containerTarget.contains(layerContainer)) {
containerTarget.removeChild(layerContainer);
}
}
};
}, [animate, animation, containerTarget, layerContainer, modal]);
return layerContainer ? /*#__PURE__*/createPortal(/*#__PURE__*/React.createElement(LayerContainer, _extends({
ref: ref
}, props, {
modal: modal
})), layerContainer) : null;
});
Layer.displayName = 'Layer';
Layer.propTypes = LayerPropTypes;
export { Layer };