ant-design-vue/components/vc-align/util.ts
2021-05-10 16:34:14 +08:00

60 lines
1.6 KiB
TypeScript

import contains from '../vc-util/Dom/contains';
import { TargetPoint } from './interface';
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();
};
}