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1/*
2 * Copyright 2020 Adobe. All rights reserved.
3 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License. You may obtain a copy
5 * of the License at http://www.apache.org/licenses/LICENSE-2.0
6 *
7 * Unless required by applicable law or agreed to in writing, software distributed under
8 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
9 * OF ANY KIND, either express or implied. See the License for the specific language
10 * governing permissions and limitations under the License.
11 */
12
13import {isScrollable} from './isScrollable';
14
15export function getScrollParent(node: Element, checkForOverflow?: boolean): Element {
16 let scrollableNode: Element | null = node;
17 if (isScrollable(scrollableNode, checkForOverflow)) {
18 scrollableNode = scrollableNode.parentElement;
19 }
20
21 while (scrollableNode && !isScrollable(scrollableNode, checkForOverflow)) {
22 scrollableNode = scrollableNode.parentElement;
23 }
24
25 return scrollableNode || document.scrollingElement || document.documentElement;
26}
27