57 lines
1.8 KiB
TypeScript
57 lines
1.8 KiB
TypeScript
/*
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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 {AriaLabelingProps} from '@react-types/shared';
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import {useLayoutEffect} from './useLayoutEffect';
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import {useState} from 'react';
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let descriptionId = 0;
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const descriptionNodes = new Map<string, {refCount: number, element: Element}>();
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export function useDescription(description?: string): AriaLabelingProps {
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let [id, setId] = useState<string | undefined>();
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useLayoutEffect(() => {
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if (!description) {
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return;
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}
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let desc = descriptionNodes.get(description);
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if (!desc) {
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let id = `react-aria-description-${descriptionId++}`;
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setId(id);
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let node = document.createElement('div');
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node.id = id;
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node.style.display = 'none';
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node.textContent = description;
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document.body.appendChild(node);
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desc = {refCount: 0, element: node};
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descriptionNodes.set(description, desc);
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} else {
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setId(desc.element.id);
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}
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desc.refCount++;
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return () => {
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if (desc && --desc.refCount === 0) {
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desc.element.remove();
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descriptionNodes.delete(description);
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}
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};
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}, [description]);
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return {
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'aria-describedby': description ? id : undefined
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};
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}
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