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9f15fe9fdf
close #4508
61 lines
1.7 KiB
TypeScript
61 lines
1.7 KiB
TypeScript
import contains from '../vc-util/Dom/contains';
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import type { TargetPoint } from './interface';
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import ResizeObserver from 'resize-observer-polyfill';
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export function isSamePoint(prev: TargetPoint, next: TargetPoint) {
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if (prev === next) return true;
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if (!prev || !next) return false;
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if ('pageX' in next && 'pageY' in next) {
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return prev.pageX === next.pageX && prev.pageY === next.pageY;
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}
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if ('clientX' in next && 'clientY' in next) {
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return prev.clientX === next.clientX && prev.clientY === next.clientY;
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}
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return false;
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}
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export function restoreFocus(activeElement, container) {
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// Focus back if is in the container
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if (
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activeElement !== document.activeElement &&
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contains(container, activeElement) &&
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typeof activeElement.focus === 'function'
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) {
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activeElement.focus();
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}
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}
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export function monitorResize(element: HTMLElement, callback: Function) {
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let prevWidth: number = null;
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let prevHeight: number = null;
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function onResize([{ target }]: ResizeObserverEntry[]) {
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if (!document.documentElement.contains(target)) return;
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const { width, height } = target.getBoundingClientRect();
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const fixedWidth = Math.floor(width);
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const fixedHeight = Math.floor(height);
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if (prevWidth !== fixedWidth || prevHeight !== fixedHeight) {
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// https://webkit.org/blog/9997/resizeobserver-in-webkit/
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Promise.resolve().then(() => {
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callback({ width: fixedWidth, height: fixedHeight });
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});
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}
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prevWidth = fixedWidth;
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prevHeight = fixedHeight;
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}
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const resizeObserver = new ResizeObserver(onResize);
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if (element) {
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resizeObserver.observe(element);
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}
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return () => {
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resizeObserver.disconnect();
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};
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}
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