Welcome to Mantine, React components library that you always wished for
Welcome to Mantine, React components library that you always wished for

FileInput

Capture files from user

Import

Source

View source code

Docs

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Package

@mantine/core

Usage

FileInput component supports Input and Input.Wrapper components features and all input element props. FileInput documentation does not include all features supported by the component – see Input documentation to learn about all available features.

Input description

Variant
Size
Radius
import { FileInput } from '@mantine/core';

function Demo() {
  return (
    <FileInput
      label="Input label"
      description="Input description"
      placeholder="Input placeholder"
    />
  );
}

Controlled

When multiple is false:

import { useState } from 'react';
import { FileInput } from '@mantine/core';

function Demo() {
  const [value, setValue] = useState<File | null>(null);
  return <FileInput value={value} onChange={setValue} />;
}

When multiple is true:

import { useState } from 'react';
import { FileInput } from '@mantine/core';

function Demo() {
  const [value, setValue] = useState<File[]>([]);
  return <FileInput multiple value={value} onChange={setValue} />;
}

Multiple

Set multiple to allow user to pick more than one file:

import { FileInput } from '@mantine/core';

function Demo() {
  return <FileInput label="Upload files" placeholder="Upload files" multiple />;
}

Accept

Set accept prop to restrict files selection to specific mime types:

import { FileInput } from '@mantine/core';

function Demo() {
  return (
    <FileInput accept="image/png,image/jpeg" label="Upload files" placeholder="Upload files" />
  );
}

Custom value component

import { FileInput, FileInputProps, Pill } from '@mantine/core';

const ValueComponent: FileInputProps['valueComponent'] = ({ value }) => {
  if (value === null) {
    return null;
  }

  if (Array.isArray(value)) {
    return (
      <Pill.Group>
        {value.map((file, index) => (
          <Pill key={index}>{file.name}</Pill>
        ))}
      </Pill.Group>
    );
  }

  return <Pill>{value.name}</Pill>;
};

function Demo() {
  return (
    <FileInput
      label="Upload files"
      placeholder="Upload files"
      multiple
      valueComponent={ValueComponent}
    />
  );
}

Error state

Invalid name

import { FileInput } from '@mantine/core';

function Demo() {
  return (
    <>
      <FileInput label="Boolean error" placeholder="Boolean error" error />
      <FileInput
        mt="md"
        label="With error message"
        placeholder="With error message"
        error="Invalid name"
      />
    </>
  );
}

Disabled state

import { FileInput } from '@mantine/core';

function Demo() {
  return <FileInput disabled label="Disabled input" placeholder="Disabled input" />;
}

Styles API

FileInput supports Styles API, you can add styles to any inner element of the component withclassNames prop. Follow Styles API documentation to learn more.

Description

Error

Component Styles API

Hover over selectors to highlight corresponding elements

/*
 * Hover over selectors to apply outline styles
 *
 */

Get element ref

import { useRef } from 'react';
import { FileInput } from '@mantine/core';

function Demo() {
  const ref = useRef<HTMLButtonElement>(null);
  return <FileInput ref={ref} />;
}

Accessibility

If FileInput is used without label prop, it will not be announced properly by screen reader:

import { FileInput } from '@mantine/core';

// Inaccessible input – screen reader will not announce it properly
function Demo() {
  return <FileInput />;
}

Set aria-label to make the input accessible. In this case label will not be visible, but screen reader will announce it:

import { FileInput } from '@mantine/core';

// Accessible input – it has aria-label
function Demo() {
  return <FileInput aria-label="My input" />;
}

If label prop is set, input will be accessible it is not required to set aria-label:

import { FileInput } from '@mantine/core';

// Accessible input – it has associated label element
function Demo() {
  return <FileInput label="My input" />;
}

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