ant-design-vue/components/_util/switchScrollingEffect.js

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import getScrollBarSize from './getScrollBarSize';
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export default close => {
const bodyIsOverflowing =
document.body.scrollHeight > (window.innerHeight || document.documentElement.clientHeight) &&
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window.innerWidth > document.body.offsetWidth;
if (!bodyIsOverflowing) {
return;
}
if (close) {
document.body.style.position = '';
document.body.style.width = '';
return;
}
const scrollBarSize = getScrollBarSize();
if (scrollBarSize) {
document.body.style.position = 'relative';
document.body.style.width = `calc(100% - ${scrollBarSize}px)`;
}
};