34 lines
1.2 KiB
Plaintext
34 lines
1.2 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 {Key} from '@react-types/shared';
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/**
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* A Selection is a special Set containing Keys, which also has an anchor
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* and current selected key for use when range selecting.
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*/
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export class Selection extends Set<Key> {
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anchorKey: Key | null;
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currentKey: Key | null;
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constructor(keys?: Iterable<Key> | Selection, anchorKey?: Key | null, currentKey?: Key | null) {
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super(keys);
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if (keys instanceof Selection) {
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this.anchorKey = anchorKey ?? keys.anchorKey;
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this.currentKey = currentKey ?? keys.currentKey;
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} else {
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this.anchorKey = anchorKey ?? null;
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this.currentKey = currentKey ?? null;
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}
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}
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}
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