65 lines
2.2 KiB
JavaScript
65 lines
2.2 KiB
JavaScript
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import KeyCode from "rc-util/es/KeyCode";
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import raf from "rc-util/es/raf";
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import * as React from "react";
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var ESC = KeyCode.ESC,
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TAB = KeyCode.TAB;
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export default function useAccessibility(_ref) {
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var visible = _ref.visible,
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triggerRef = _ref.triggerRef,
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onVisibleChange = _ref.onVisibleChange,
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autoFocus = _ref.autoFocus,
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overlayRef = _ref.overlayRef;
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var focusMenuRef = React.useRef(false);
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var handleCloseMenuAndReturnFocus = function handleCloseMenuAndReturnFocus() {
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if (visible) {
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var _triggerRef$current, _triggerRef$current$f;
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(_triggerRef$current = triggerRef.current) === null || _triggerRef$current === void 0 ? void 0 : (_triggerRef$current$f = _triggerRef$current.focus) === null || _triggerRef$current$f === void 0 ? void 0 : _triggerRef$current$f.call(_triggerRef$current);
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onVisibleChange === null || onVisibleChange === void 0 ? void 0 : onVisibleChange(false);
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}
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};
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var focusMenu = function focusMenu() {
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var _overlayRef$current;
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if ((_overlayRef$current = overlayRef.current) !== null && _overlayRef$current !== void 0 && _overlayRef$current.focus) {
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overlayRef.current.focus();
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focusMenuRef.current = true;
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return true;
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}
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return false;
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};
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var handleKeyDown = function handleKeyDown(event) {
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switch (event.keyCode) {
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case ESC:
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handleCloseMenuAndReturnFocus();
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break;
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case TAB:
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{
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var focusResult = false;
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if (!focusMenuRef.current) {
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focusResult = focusMenu();
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}
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if (focusResult) {
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event.preventDefault();
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} else {
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handleCloseMenuAndReturnFocus();
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}
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break;
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}
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}
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};
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React.useEffect(function () {
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if (visible) {
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window.addEventListener("keydown", handleKeyDown);
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if (autoFocus) {
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// FIXME: hack with raf
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raf(focusMenu, 3);
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}
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return function () {
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window.removeEventListener("keydown", handleKeyDown);
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focusMenuRef.current = false;
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};
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}
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return function () {
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focusMenuRef.current = false;
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};
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}, [visible]); // eslint-disable-line react-hooks/exhaustive-deps
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}
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