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改个版本

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2betop 2022-03-24 19:02:04 +08:00
parent 1776aba963
commit 7c70d119a5
1 changed files with 13 additions and 20 deletions
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33
src/utils/scrollPosition.ts
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@ -1,31 +1,24 @@
import position from './position';
export function getScrollParent(element: HTMLElement | null): HTMLElement {
function getScrollParent(element: HTMLElement | null, includeHidden?: boolean) {
if (!element) {
return document.body;
}
const position = getComputedStyle(element).getPropertyValue('position');
const excludeStatic = position === 'absolute';
const ownerDoc = element.ownerDocument;
let style = getComputedStyle(element);
const excludeStaticParent = style.position === 'absolute';
const overflowRegex = includeHidden
? /(auto|scroll|hidden)/
: /(auto|scroll)/;
if (position === 'fixed') return document.body;
// @ts-ignore
while ((element = element.parentNode) && element !== document.body) {
const currentStyle = getComputedStyle(element);
const isStatic =
excludeStatic && currentStyle.getPropertyValue('position') === 'static';
const style =
(currentStyle.getPropertyValue('overflow') || '') +
(currentStyle.getPropertyValue('overflow-y') || '') +
currentStyle.getPropertyValue('overflow-x');
if (isStatic) continue;
if (/(auto|scroll)/.test(style)) {
return element;
if (style.position === 'fixed') return document.body;
for (let parent = element; (parent = parent.parentElement!); ) {
style = getComputedStyle(parent);
if (excludeStaticParent && style.position === 'static') {
continue;
}
if (overflowRegex.test(style.overflow + style.overflowY + style.overflowX))
return parent;
}
return document.body;