Scroll Area

npx shadcn@latest add https://cupertino-ui.baltoon.jp/r/scroll-area.json

"use client";

import * as React from "react";
import { ScrollArea as ScrollAreaPrimitive } from "radix-ui";

import { cn } from "@/lib/utils";

/**
 * macOS overlay scrollbars: thin rounded thumbs that appear over
 * the content while scrolling and fade away.
 */
function ScrollArea({
  className,
  children,
  ...props
}: React.ComponentProps<typeof ScrollAreaPrimitive.Root>) {
  return (
    <ScrollAreaPrimitive.Root
      data-slot="scroll-area"
      type="hover"
      className={cn("relative overflow-hidden", className)}
      {...props}
    >
      <ScrollAreaPrimitive.Viewport
        data-slot="scroll-area-viewport"
        className="size-full rounded-[inherit] outline-none transition-shadow focus-visible:ring-[3px] focus-visible:ring-blue/40"
      >
        {children}
      </ScrollAreaPrimitive.Viewport>
      <ScrollBar />
      <ScrollBar orientation="horizontal" />
      <ScrollAreaPrimitive.Corner />
    </ScrollAreaPrimitive.Root>
  );
}

function ScrollBar({
  className,
  orientation = "vertical",
  ...props
}: React.ComponentProps<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>) {
  return (
    <ScrollAreaPrimitive.ScrollAreaScrollbar
      data-slot="scroll-area-scrollbar"
      orientation={orientation}
      className={cn(
        "z-10 flex touch-none select-none p-0.5 data-[state=visible]:animate-in data-[state=visible]:fade-in-0 data-[state=hidden]:animate-out data-[state=hidden]:fade-out-0",
        orientation === "vertical" && "h-full w-2.5",
        orientation === "horizontal" && "h-2.5 flex-col",
        className
      )}
      {...props}
    >
      <ScrollAreaPrimitive.ScrollAreaThumb
        data-slot="scroll-area-thumb"
        className="relative flex-1 rounded-full bg-label/35"
      />
    </ScrollAreaPrimitive.ScrollAreaScrollbar>
  );
}

export { ScrollArea, ScrollBar };