Hover card.

A little context before you go.

In practice

Supplement a link with nonessential information. Essential content must also be available at the destination.

Installation

Install Coal once. Components and TypeScript declarations are included. React 19 and React DOM 19 are peer dependencies.

npm install http://localhost:3100/downloads/chlohal-coal-ui-0.5.0.tgz

This installs the local package. It is not yet published on npm. See installation for stylesheet setup and integration.

Usage

"use client";
import * as React from "react";
import "@chlohal/coal-ui/styles.css";
import { ArrowUpRight } from "lucide-react";
import { HoverCard, HoverCardTrigger, HoverCardContent } from "@chlohal/coal-ui";
export default function Example() {
    return (<HoverCard>
          <HoverCardTrigger href="https://github.com/chlohal/coal-ui">
            Made by Chlohal <ArrowUpRight size={14}/>
          </HoverCardTrigger>
          <HoverCardContent>
            <strong>Chlohal</strong>
            <p>
              Independent design. Thoughtful components.
            </p>
          </HoverCardContent>
        </HoverCard>);
}

Source

The original Coal implementation. Use the package export to integrate it.

"use client";
import * as React from "react";
import {
  FloatingRoot,
  FloatingContent,
  useFloating,
  type FloatingProps,
  type FloatingContentProps,
} from "./floating.js";
export function HoverCard(props: FloatingProps) {
  return <FloatingRoot {...props} />;
}
export function HoverCardTrigger({
  onFocus,
  onBlur,
  onPointerEnter,
  onPointerLeave,
  ...props
}: React.ComponentPropsWithRef<"a">) {
  const c = useFloating();
  return (
    <a
      {...props}
      ref={(node) => {
        c.anchor.current = node;
      }}
      aria-describedby={c.open ? c.id : undefined}
      onFocus={(e) => {
        onFocus?.(e);
        {
          c.cancelClose();
          c.set(true);
        }
      }}
      onBlur={(e) => {
        onBlur?.(e);
        c.scheduleClose();
      }}
      onPointerEnter={(e) => {
        onPointerEnter?.(e);
        {
          c.cancelClose();
          c.set(true);
        }
      }}
      onPointerLeave={(e) => {
        onPointerLeave?.(e);
        if (!c.content.current?.contains(e.relatedTarget as Node))
          c.scheduleClose();
      }}
    />
  );
}
export function HoverCardContent(props: FloatingContentProps) {
  const c = useFloating();
  return (
    <FloatingContent
      autoFocus={false}
      onPointerEnter={() => c.cancelClose()}
      onPointerLeave={() => c.scheduleClose()}
      onFocus={() => c.cancelClose()}
      onBlur={() => c.scheduleClose()}
      {...props}
    />
  );
}

Accessibility checklist

• Provide an accessible name for controls, including icon-only buttons.
• Check keyboard navigation, visible focus and disabled states in your application.
• Do not rely on color alone to communicate status.