VibeUI

Buttons

File Picker Button

A file picker over a real input[type=file]: click, Tab and Enter work on their own, and JS is added only for the file name, its weight and drag and drop.

  • button
  • upload
  • file
  • drag-drop

Preview

1440pxHost theme

Use it with AI

  1. 1. Copy the link.
  2. 2. Write to your agent in your own words and drop the link into the sentence.
  3. 3. The agent opens the link and installs the component from the registry.

put this in the header: https://vibeui.ru/c/button-031?lang=en

Show the full instructions

What the link says, spelled out. Use it when your agent cannot open links — paste this text instead.

# Install and place "button-031" (File Picker Button) from VibeUI

## 1. Install first — do not skip, do not recreate
Run this exact command before writing any code:
npx shadcn@latest add https://vibeui.ru/r/button-031.json

Registry item: https://vibeui.ru/r/button-031.json
Installs to: components/vibeui/button-031.tsx (the exact path follows this project's components.json aliases).
npm dependencies: none.
Registry dependencies: none.

Install it from the registry. Do not recreate it from the description,
do not substitute a similar component from another library, and do not
rewrite it to match the project's existing style.

## 2. What it is
A file picker over a real input[type=file]: click, Tab and Enter work on their own, and JS is added only for the file name, its weight and drag and drop.

A file-picking button with a real input[type=file] underneath. The browser opens the dialog, the keyboard works with no handlers, and JS is added only where it must be: showing the chosen file's name and weight, accepting a drop and clearing the choice. The dashed plate lights up while a file is dragged over it.

## 3. How to use it
import { Button031 } from "@/components/vibeui/button-031"

<Button031
  accept=".pdf,.png"
  hint="PDF or PNG, up to 10 MB"
  onFileChange={setAttachment}
/>

Read the installed file for the full prop list.

## 4. Where to place it
This is a small inline component. Put it exactly where the user asked,
inside the existing markup. Do not create a new page, section or
wrapper for it. If a similar control already sits in that spot,
replace it instead of adding a second one.

Placement: ___
(The user fills this line in. If it is still blank, ask where to put it
instead of guessing.)

## 5. Keep exactly as installed
- the real input[type=file] inside the label: the dialog, Tab and Enter come from the browser and the form submits the ordinary way
- hiding the input with clip-path rather than display:none — a display-hidden control loses focus and leaves the form
- the focus ring drawn on the plate through :has(input:focus-visible): the input itself is invisible, so without it focus disappears
- writing the dropped file into input.files rather than into state alone: otherwise the form submits without the file
- the chosen file's name and weight in place of the caption — the confirmation belongs on the plate itself
- the reset button clearing both the state and the input's own value

## 6. You may change
- the caption through the label prop and the constraints line through hint
- the allowed formats through the accept prop
- the reset caption through the resetLabel prop
- the reaction to a choice through the onFileChange prop
- the accent colour through the accent prop

## 7. Rules
- The component uploads nothing: it only picks a file. Sending it is the form's job, or yours from onFileChange.
- The accept attribute is a hint to the dialog, not a check. Format and size are still verified on the server.
- Multiple selection is deliberately unsupported: the plate shows one file, several would need a list.
- Do not lift the CSS variables into globals.css: the component has to stay a single file.

## 8. Verify
- it renders with no console errors;
- it looks like the preview on the VibeUI page you copied this from;
- if it does not, you changed something listed in section 5 — put it back.

For developers

npx shadcn@latest add https://vibeui.ru/r/button-031.json
https://vibeui.ru/r/button-031.json

Компонент самодостаточен: один файл, без зависимостей, собственная палитра в локальных переменных --vibeui-button-031-*. Клиентский: имя и вес выбранного файла держатся в состоянии, файл отдаётся наружу через onFileChange. Скрытый input лежит внутри label, поэтому диалог открывает браузер без обработчиков; фокусное кольцо рисуется на плашке через :has(input:focus-visible). При перетаскивании файл кладётся в сам input через ref, чтобы форма отправилась обычным способом.

Component source

The same file your agent installs. Here in case you would rather copy it by hand.

"use client"

import { useRef, useState } from "react"
import type {
  ChangeEvent,
  ComponentPropsWithoutRef,
  CSSProperties,
  DragEvent,
} from "react"

export type Button031Props = Omit<
  ComponentPropsWithoutRef<"div">,
  "children" | "onChange"
> & {
  label?: string
  /** Строка ограничений под подписью: форматы и вес. */
  hint?: string
  /** Значение атрибута accept у скрытого input. */
  accept?: string
  resetLabel?: string
  onFileChange?: (file: File | null) => void
  accent?: string
}

// Идея компонента: кнопка выбора файла остаётся настоящим input[type=file].
// Он лежит внутри label и растянут по всей плашке: клик, Tab и Enter работают
// без единого обработчика, диалог открывает браузер. JS добавлен только там,
// где без него нельзя, — показать имя и вес выбранного файла, принять
// перетаскивание и очистить выбор.
const STYLES = `
:where([data-vibeui-block="button-031"]){
--vibeui-button-031-bg:oklch(1 0 0);
--vibeui-button-031-fg:oklch(0.26 0.016 265);
--vibeui-button-031-muted:oklch(0.55 0.014 265);
--vibeui-button-031-border:oklch(0.86 0.008 265);
--vibeui-button-031-accent:oklch(0.55 0.17 265);
--vibeui-button-031-font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
[data-vibeui-block="button-031"]{
display:flex;flex-direction:column;gap:0.5rem;
width:100%;max-width:22rem;box-sizing:border-box;
font-family:var(--vibeui-button-031-font);color:var(--vibeui-button-031-fg);
}
[data-vibeui-block="button-031"] [data-part="field"]{
position:relative;cursor:pointer;
display:flex;align-items:center;gap:0.75rem;
padding:0.75rem 0.875rem;box-sizing:border-box;
border:1.5px dashed var(--vibeui-button-031-border);border-radius:0.75rem;
background:var(--vibeui-button-031-bg);
transition:border-color .16s ease,background-color .16s ease;
}
[data-vibeui-block="button-031"] [data-part="field"]:hover{border-color:var(--vibeui-button-031-accent)}
[data-vibeui-block="button-031"] [data-part="field"][data-drag="true"]{
border-color:var(--vibeui-button-031-accent);
background:color-mix(in oklab,var(--vibeui-button-031-accent) 7%,var(--vibeui-button-031-bg));
}
/* Фокус приходит от скрытого input: обводку рисуем на плашке. */
[data-vibeui-block="button-031"] [data-part="field"]:has(input:focus-visible){
outline:2px solid var(--vibeui-button-031-accent);outline-offset:2px;
}
[data-vibeui-block="button-031"] input{
position:absolute;width:1px;height:1px;padding:0;margin:0;
opacity:0;clip-path:inset(50%);overflow:hidden;
}
[data-vibeui-block="button-031"] [data-part="clip"]{
flex:none;position:relative;width:0.5rem;height:1rem;box-sizing:border-box;
border:1.5px solid var(--vibeui-button-031-accent);border-radius:9999px;
transform:rotate(45deg);
}
[data-vibeui-block="button-031"] [data-part="clip"]::after{
content:"";position:absolute;left:1px;top:0.1875rem;width:0.1875rem;height:0.5rem;
box-sizing:border-box;border:1.5px solid var(--vibeui-button-031-accent);
border-top:0;border-radius:0 0 0.125rem 0.125rem;
}
[data-vibeui-block="button-031"] [data-part="text"]{display:flex;flex-direction:column;gap:0.1875rem;min-width:0}
[data-vibeui-block="button-031"] [data-part="name"]{
font-size:0.875rem;font-weight:650;line-height:1.2;
white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
[data-vibeui-block="button-031"] [data-part="hint"]{
color:var(--vibeui-button-031-muted);font-size:0.75rem;line-height:1.2;
font-variant-numeric:tabular-nums;
}
[data-vibeui-block="button-031"] [data-part="reset"]{
appearance:none;border:0;cursor:pointer;align-self:flex-start;
padding:0;background:none;color:var(--vibeui-button-031-muted);
font:inherit;font-size:0.75rem;text-decoration:underline;text-underline-offset:2px;
}
[data-vibeui-block="button-031"] [data-part="reset"]:hover{color:var(--vibeui-button-031-fg)}
[data-vibeui-block="button-031"] [data-part="reset"]:focus-visible{outline:2px solid var(--vibeui-button-031-accent);outline-offset:2px}
@media (prefers-reduced-motion:reduce){[data-vibeui-block="button-031"] *{animation:none!important;transition:none!important}}
`

function weight(bytes: number) {
  if (bytes >= 1024 * 1024) return `${(bytes / 1024 / 1024).toFixed(1)} МБ`
  if (bytes >= 1024) return `${Math.round(bytes / 1024)} КБ`

  return `${bytes} Б`
}

/**
 * Кнопка выбора файла поверх настоящего input[type=file].
 * Один файл, ноль зависимостей, собственная палитра.
 */
export function Button031({
  label = "Выберите файл или перетащите",
  hint = "PDF или PNG, до 10 МБ",
  accept = ".pdf,.png,.jpg",
  resetLabel = "Убрать файл",
  onFileChange,
  accent,
  className,
  style,
  ...props
}: Button031Props) {
  const [file, setFile] = useState<File | null>(null)
  const [drag, setDrag] = useState(false)
  const input = useRef<HTMLInputElement>(null)

  const take = (next: File | null) => {
    setFile(next)
    onFileChange?.(next)
  }

  const change = (event: ChangeEvent<HTMLInputElement>) => {
    take(event.target.files?.[0] ?? null)
  }

  const drop = (event: DragEvent<HTMLLabelElement>) => {
    event.preventDefault()
    setDrag(false)

    const dropped = event.dataTransfer.files
    if (!dropped.length) return

    // Кладём файл в сам input: форма отправится обычным способом,
    // без ручной сборки FormData на стороне приложения.
    if (input.current) input.current.files = dropped
    take(dropped[0])
  }

  const clear = () => {
    if (input.current) input.current.value = ""
    take(null)
  }

  const palette = {
    ...(accent ? { "--vibeui-button-031-accent": accent } : null),
    ...style,
  } as CSSProperties

  return (
    <>
      <style href="vibeui-button-031" precedence="medium">
        {STYLES}
      </style>
      <div
        {...props}
        data-vibeui-block="button-031"
        className={className}
        style={palette}
      >
        <label
          data-part="field"
          data-drag={String(drag)}
          onDragOver={(event) => {
            event.preventDefault()
            setDrag(true)
          }}
          onDragLeave={() => setDrag(false)}
          onDrop={drop}
        >
          <input ref={input} type="file" accept={accept} onChange={change} />
          <span data-part="clip" aria-hidden="true" />
          <span data-part="text">
            <span data-part="name">{file ? file.name : label}</span>
            <span data-part="hint">{file ? weight(file.size) : hint}</span>
          </span>
        </label>
        {file ? (
          <button type="button" data-part="reset" onClick={clear}>
            {resetLabel}
          </button>
        ) : null}
      </div>
    </>
  )
}