A file drop zone that lights up when files are dragged over it, sinks and says 'let go to attach' while hovered, shakes to refuse files it won't accept, and also opens a picker on click so dragging is never the only way to attach files.
"use client";
import * as React from "react";
import DropZone, { type DropRefusal } from "@/components/ui/drop-zone";
import { Attachment, formatBytes } from "@unlocalhosted/metalui";
import { DocumentIcon } from "@unlocalhosted/metalui/icons";
const MAX = 10_000_000;
const WHY: Record<DropRefusal["reason"], string> = {
type: "not a PDF or an image",
size: `larger than ${formatBytes(MAX)}`,
count: "one at a time",
};
export default function DropZoneDemo() {
const [files, setFiles] = React.useState<File[]>([]);
const [refused, setRefused] = React.useState<DropRefusal[]>([]);
return (
<div
role="region"
aria-label="Region files"
className="grid w-full max-w-[400px] gap-12"
>
<DropZone
icon={<DocumentIcon size={20} />}
accept="application/pdf,image/*"
maxSize={MAX}
description={`PDFs and images, up to ${formatBytes(MAX)}`}
onFiles={(took, no) => {
setFiles((all) => [...all, ...took]);
setRefused(no);
}}
/>
{refused.length > 0 && (
<p role="alert" className="m-0 type-meta text-form-field-error-ink">
{refused.map((r) => `${r.file.name} is ${WHY[r.reason]}`).join("; ")}.
</p>
)}
{files.map((f, i) => (
<Attachment
key={`${f.name}-${i}`}
name={f.name}
size={f.size}
onRemove={() => setFiles((all) => all.filter((x) => x !== f))}
/>
))}
</div>
);
}
