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import * as React from 'react';
import isVisible from 'rc-util/lib/Dom/isVisible';
import Marker from './Marker';
export interface MarkersProps {
targetClassName: string | null;
containerRef: React.RefObject<HTMLDivElement | null>;
}
interface RectType {
left: number;
top: number;
width: number;
height: number;
visible: boolean;
}
const Markers: React.FC<MarkersProps> = (props) => {
const { targetClassName, containerRef } = props;
const [rectList, setRectList] = React.useState<RectType[]>([]);
// ======================== Effect =========================
React.useEffect(() => {
const targetElements = targetClassName
? Array.from(containerRef.current?.querySelectorAll<HTMLElement>(`.${targetClassName}`) || [])
: [];
const containerRect = containerRef.current?.getBoundingClientRect() || ({} as DOMRect);
const targetRectList = targetElements.map<RectType>((targetElement) => {
const rect = targetElement.getBoundingClientRect();
return {
left: rect.left - (containerRect.left || 0),
top: rect.top - (containerRect.top || 0),
width: rect.width,
height: rect.height,
visible: isVisible(targetElement),
};
});
setRectList((prev) => {
return Array.from({ length: Math.max(prev.length, targetRectList.length) }).map<RectType>(
(_, index) => {
const prevRect = prev[index] || {};
const nextRect = targetRectList[index] || {};
return {
left: nextRect.left ?? prevRect.left ?? 0,
top: nextRect.top ?? prevRect.top ?? 0,
width: nextRect.width ?? prevRect.width ?? 0,
height: nextRect.height ?? prevRect.height ?? 0,
visible: !!nextRect.visible,
};
},
);
});
}, [targetClassName]);
// ======================== Render =========================
return (
<>
{rectList.map((rect, index) => {
const key = `key-${index}`;
return <Marker rect={rect} key={key} data-id={key} primary={index === 0} />;
})}
</>
);
};
export default Markers;
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