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