Excalidraw/excalidraw/excalidraw-app/collab/CollabError.tsx

import { Tooltip } from "../../packages/excalidraw/components/Tooltip";
import { warning } from "../../packages/excalidraw/components/icons";
import clsx from "clsx";
import { useEffect, useRef, useState } from "react";

import "./CollabError.scss";
import { atom } from "jotai";

export type ErrorIndicator = {
  message: string | null;
  /** used to rerun the useEffect responsible for animation */
  nonce: number;
};

const _collabErrorIndicatorAtom = atom<ErrorIndicator>({
  message: null,
  nonce: 0,
});

export const collabErrorIndicatorAtom = atom(
  (get) => get(_collabErrorIndicatorAtom),
  (get, set, update: ErrorIndicator) => set(_collabErrorIndicatorAtom, update),
);

const CollabError = ({ collabError }: { collabError: ErrorIndicator }) => {
  const [isAnimating, setIsAnimating] = useState(false);
  const clearAnimationRef = useRef<string | number | NodeJS.Timeout>();

  useEffect(() => {
    setIsAnimating(true);
    clearAnimationRef.current = setTimeout(() => {
      setIsAnimating(false);
    }, 1000);

    return () => {
      clearTimeout(clearAnimationRef.current);
    };
  }, [collabError.message, collabError.nonce]);

  if (!collabError.message) {
    return null;
  }

  return (
    <Tooltip label={collabError.message} long={true}>
      <div
        className={clsx("collab-errors-button", {
          "collab-errors-button-shake": isAnimating,
        })}
      >
        {warning}
      </div>
    </Tooltip>
  );
};

CollabError.displayName = "CollabError";

export default CollabError;