35 lines
1.6 KiB
Plaintext
35 lines
1.6 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 {Collection, CollectionStateBase, Node} from '@react-types/shared';
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import {CollectionBuilder} from './CollectionBuilder';
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import {ReactElement, useMemo} from 'react';
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interface CollectionOptions<T, C extends Collection<Node<T>>> extends Omit<CollectionStateBase<T, C>, 'children'> {
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children?: ReactElement<any> | null | (ReactElement<any> | null)[] | ((item: T) => ReactElement<any> | null)
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}
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type CollectionFactory<T, C extends Collection<Node<T>>> = (node: Iterable<Node<T>>) => C;
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export function useCollection<T extends object, C extends Collection<Node<T>> = Collection<Node<T>>>(props: CollectionOptions<T, C>, factory: CollectionFactory<T, C>, context?: unknown): C {
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let builder = useMemo(() => new CollectionBuilder<T>(), []);
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let {children, items, collection} = props;
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let result = useMemo(() => {
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if (collection) {
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return collection;
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}
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let nodes = builder.build({children, items}, context);
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return factory(nodes);
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}, [builder, children, items, collection, context, factory]);
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return result;
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}
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