69 lines
1.6 KiB
TypeScript
69 lines
1.6 KiB
TypeScript
import hash from '@emotion/hash';
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import { removeCSS, updateCSS } from '../../vc-util/Dom/dynamicCSS';
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import canUseDom from '../canUseDom';
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export function flattenToken(token: any) {
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let str = '';
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Object.keys(token).forEach(key => {
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const value = token[key];
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str += key;
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if (value && typeof value === 'object') {
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str += flattenToken(value);
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} else {
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str += value;
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}
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});
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return str;
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}
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/**
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* Convert derivative token to key string
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*/
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export function token2key(token: any, salt: string): string {
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return hash(`${salt}_${flattenToken(token)}`);
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}
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const layerKey = `layer-${Date.now()}-${Math.random()}`.replace(/\./g, '');
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const layerWidth = '903px';
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function supportSelector(styleStr: string, handleElement?: (ele: HTMLElement) => void): boolean {
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if (canUseDom()) {
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updateCSS(styleStr, layerKey);
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const ele = document.createElement('div');
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ele.style.position = 'fixed';
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ele.style.left = '0';
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ele.style.top = '0';
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handleElement?.(ele);
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document.body.appendChild(ele);
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if (process.env.NODE_ENV !== 'production') {
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ele.innerHTML = 'Test';
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ele.style.zIndex = '9999999';
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}
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const support = getComputedStyle(ele).width === layerWidth;
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ele.parentNode?.removeChild(ele);
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removeCSS(layerKey);
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return support;
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}
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return false;
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}
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let canLayer: boolean | undefined = undefined;
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export function supportLayer(): boolean {
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if (canLayer === undefined) {
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canLayer = supportSelector(
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`@layer ${layerKey} { .${layerKey} { width: ${layerWidth}!important; } }`,
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ele => {
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ele.className = layerKey;
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},
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);
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}
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return canLayer!;
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}
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