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130 lines
3.7 KiB
Plaintext
130 lines
3.7 KiB
Plaintext
/*
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* Copyright 2020 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/
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import {useCallback, useEffect, useRef, useState} from 'react';
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import {useLayoutEffect} from './useLayoutEffect';
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import {useSSRSafeId} from '@react-aria/ssr';
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import {useValueEffect} from './';
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// copied from SSRProvider.tsx to reduce exports, if needed again, consider sharing
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let canUseDOM = Boolean(
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typeof window !== 'undefined' &&
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window.document &&
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window.document.createElement
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);
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export let idsUpdaterMap: Map<string, { current: string | null }[]> = new Map();
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// This allows us to clean up the idsUpdaterMap when the id is no longer used.
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// Map is a strong reference, so unused ids wouldn't be cleaned up otherwise.
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// This can happen in suspended components where mount/unmount is not called.
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let registry;
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if (typeof FinalizationRegistry !== 'undefined') {
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registry = new FinalizationRegistry<string>((heldValue) => {
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idsUpdaterMap.delete(heldValue);
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});
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}
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/**
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* If a default is not provided, generate an id.
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* @param defaultId - Default component id.
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*/
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export function useId(defaultId?: string): string {
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let [value, setValue] = useState(defaultId);
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let nextId = useRef(null);
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let res = useSSRSafeId(value);
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let cleanupRef = useRef(null);
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if (registry) {
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registry.register(cleanupRef, res);
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}
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if (canUseDOM) {
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const cacheIdRef = idsUpdaterMap.get(res);
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if (cacheIdRef && !cacheIdRef.includes(nextId)) {
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cacheIdRef.push(nextId);
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} else {
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idsUpdaterMap.set(res, [nextId]);
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}
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}
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useLayoutEffect(() => {
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let r = res;
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return () => {
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// In Suspense, the cleanup function may be not called
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// when it is though, also remove it from the finalization registry.
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if (registry) {
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registry.unregister(cleanupRef);
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}
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idsUpdaterMap.delete(r);
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};
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}, [res]);
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// This cannot cause an infinite loop because the ref is always cleaned up.
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// eslint-disable-next-line
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useEffect(() => {
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let newId = nextId.current;
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if (newId) { setValue(newId); }
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return () => {
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if (newId) { nextId.current = null; }
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};
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});
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return res;
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}
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/**
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* Merges two ids.
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* Different ids will trigger a side-effect and re-render components hooked up with `useId`.
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*/
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export function mergeIds(idA: string, idB: string): string {
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if (idA === idB) {
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return idA;
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}
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let setIdsA = idsUpdaterMap.get(idA);
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if (setIdsA) {
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setIdsA.forEach(ref => (ref.current = idB));
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return idB;
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}
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let setIdsB = idsUpdaterMap.get(idB);
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if (setIdsB) {
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setIdsB.forEach((ref) => (ref.current = idA));
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return idA;
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}
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return idB;
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}
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/**
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* Used to generate an id, and after render, check if that id is rendered so we know
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* if we can use it in places such as labelledby.
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* @param depArray - When to recalculate if the id is in the DOM.
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*/
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export function useSlotId(depArray: ReadonlyArray<any> = []): string {
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let id = useId();
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let [resolvedId, setResolvedId] = useValueEffect(id);
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let updateId = useCallback(() => {
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setResolvedId(function *() {
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yield id;
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yield document.getElementById(id) ? id : undefined;
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});
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}, [id, setResolvedId]);
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useLayoutEffect(updateId, [id, updateId, ...depArray]);
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return resolvedId;
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}
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