Radio buttons

Radio buttons allow users to select a single option from a button group.

React

released

Vue

released

Elements

unsupported

Android

unsupported

iOS

unsupported

Example

Example theme:

DBA lightFinn lightTori light

Usage

Questions?

Feel free to ask any questions on usage in the Warp DS Slack channel: #nmp-warp-design-system

Frameworks

Import

The toggle component allows you to render radio buttons in a group. All you have to do is specify type="radio-button" for the Toggle and let the component handle the rest. Toggle is built to handle both single and multiple options.

You must keep track of state yourself. The state has to be handled differently depending on whether you want to use single or multiple options. See examples below.

You can import the component like so:

import { Toggle } from '@warp-ds/react';

or import it individually to optimize your JS bundle size by adding only the components you need:

import { Toggle } from '@warp-ds/react/components/toggle';

Syntax

type ToggleEntry = {
  label: string;
  value: unknown;
};

function Example() {
  const options = [
    { label: 'Oslo', value: 1 },
    { label: 'Lørenskog', value: 2 },
    { label: 'Hamar', value: 3 },
  ];

  const [equalWidth, setEqualWidth] = React.useState(false);

  return (
    <>
      <Button
        className="mb-8"
        onClick={() => setEqualWidth(!equalWidth)}
        primary={equalWidth}
        negative={!equalWidth}
        small
      >
        Equal width: {equalWidth.toString()}
      </Button>
      <div>
        <Toggle
          type="radio-button"
          options={options}
          equalWidth={equalWidth}
          onChange={(e) => console.log(e)}
        />
      </div>
    </>
  );
}

Radio buttons have the special property equalWidth, which will render each option with equal width.

Props

Optional Props

name	type	default	notes
type	"radio" |"checkbox" |"radio-button"		The type of Toggle
title	string		The option(s) title
invalid	boolean		Renders the field in an invalid state. Often paired together with helpText to provide feedback about the error.
helpText	string		Help text beneath options
options	ToggleEntry[]		An array of options to render
selected	ToggleEntry[]		An array of options to be selected / checked (controlled)
defaultSelected	ToggleEntry[]		An array of options to be selected / checked on mount (uncontrolled)
label	string		If you only need to render a single option, use this prop instead
noVisibleLabel	boolean		Whether label should be invisible
checked	boolean		Whether the single option should be checked (controlled)
defaultChecked	boolean		Whether the single option should be checked on mount (uncontrolled)
indeterminate	boolean		Whether a single option is indeterminate, or "partially checked." The checkbox will appear with a small dash instead of a tick to indicate that the option is not exactly checked or unchecked.
optional	boolean		Whether the toggle is optional Appends (optional) to the end of the title for indication
className	string		Custom classes applied to the wrapping container
equalWidth	boolean		Will make each option equal width, only applied when "radio-button" type is set
small	boolean		Whether the elements should be small, only applied when "radio-button" type is set

Validation

Validation is as easy as passing the property invalid with a helpText to further explain the error. helpText can also be used as an assistance label before an error occurs as long as invalid is set to false.

function Example() {
  const [selected, setSelected] = React.useState([
    { label: 'Blue', value: 'blue' },
  ]);

  return (
    <Toggle
      type="checkbox"
      title="Favorite colors"
      helpText="Blue surely isn't amongst your favorites?"
      invalid
      selected={selected}
      options={[
        { label: 'Red', value: 'red' },
        { label: 'Blue', value: 'blue' },
        { label: 'Green', value: 'green' },
      ]}
    />
  );
}

In the next example, we'll take a closer look at one way to conditionally render error and help messages. You should probably take this a step further and implement your own error handler, but for the sake of the demo we've kept it quite simple.

function Example() {
  const [selected, setSelected] = React.useState([
    { label: 'Blue', value: 'blue' },
  ]);

  const handleSelect = (entry) => {
    if (selected.some((e) => e.value === entry.value)) {
      return setSelected(selected.filter((s) => s.value !== entry.value));
    }

    return setSelected([...selected, entry]);
  };

  return (
    <Toggle
      type="checkbox"
      title="Favorite colors"
      helpText={
        selected.some((e) => e.value === 'blue')
          ? "Blue surely isn't amongst your favorites?"
          : 'Choose your favorite colors'
      }
      invalid={!!selected.some((e) => e.value === 'blue')}
      selected={selected}
      onChange={handleSelect}
      options={[
        { label: 'Red', value: 'red' },
        { label: 'Blue', value: 'blue' },
        { label: 'Green', value: 'green' },
      ]}
    />
  );
}