Radio With Description

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import type { ChangeEvent, ReactNode } from "react";
import { useId, useState } from "react";

function cx(...parts: Array<string | false | null | undefined>): string {
  return parts.filter(Boolean).join(" ");
}

export interface RadioWithDescriptionProps {
  label: ReactNode;
  description: ReactNode;
  checked?: boolean;
  defaultChecked?: boolean;
  onChange?: (event: ChangeEvent<HTMLInputElement>) => void;
  disabled?: boolean;
  required?: boolean;
  invalid?: boolean;
  name?: string;
  value: string | number | readonly string[];
  id?: string;
  "aria-describedby"?: string;
  className?: string;
}

/**
 * Radio with a strong label plus a supporting description. The label is the
 * primary affordance; the description gives context. The description is wired
 * to the input with `aria-describedby`. Built on the native
 * `<input type="radio">`.
 */
export function RadioWithDescription({
  label,
  description,
  checked,
  defaultChecked,
  onChange,
  disabled,
  required,
  invalid,
  name,
  value,
  id,
  "aria-describedby": ariaDescribedby,
  className,
}: RadioWithDescriptionProps) {
  const generatedId = useId();
  const inputId = id ?? `radio-${generatedId}`;
  const descId = `${inputId}-desc`;
  const describedby = [descId, ariaDescribedby].filter(Boolean).join(" ") || undefined;
  const isControlled = checked !== undefined;
  const [internal, setInternal] = useState<boolean>(defaultChecked ?? false);
  const isChecked = isControlled ? checked : internal;

  function handleChange(event: ChangeEvent<HTMLInputElement>) {
    if (!isControlled) setInternal(event.target.checked);
    onChange?.(event);
  }

  return (
    <label
      htmlFor={inputId}
      className={cx(
        "inline-flex items-start gap-2.5 text-sm leading-5 text-[var(--ds-color-foreground)]",
        disabled ? "cursor-not-allowed opacity-60" : "cursor-pointer",
        className,
      )}
    >
      <span className="relative mt-[3px] inline-flex size-[18px] shrink-0 items-center justify-center">
        <input
          id={inputId}
          type="radio"
          aria-describedby={describedby}
          className={cx(
            "size-[18px] cursor-pointer appearance-none rounded-full border bg-[var(--ds-color-input)] transition-colors duration-150 ease-out hover:border-[var(--ds-color-border-strong)] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-[var(--ds-color-focus-ring)] disabled:cursor-not-allowed disabled:opacity-50 motion-reduce:transition-none",
            invalid
              ? "border-[var(--ds-color-destructive)]"
              : "border-[var(--ds-color-border)] checked:border-[var(--ds-color-primary)]",
          )}
          checked={isControlled ? isChecked : undefined}
          defaultChecked={isControlled ? undefined : defaultChecked}
          disabled={disabled}
          required={required}
          aria-invalid={invalid ? true : undefined}
          name={name}
          value={value}
          onChange={handleChange}
        />
        <span
          aria-hidden="true"
          className={cx(
            "pointer-events-none absolute inset-0 flex items-center justify-center transition-opacity duration-150 motion-reduce:transition-none",
            isChecked ? "opacity-100" : "opacity-0",
          )}
        >
          <span
            className={cx(
              "block size-[8px] rounded-full",
              invalid ? "bg-[var(--ds-color-destructive)]" : "bg-[var(--ds-color-primary)]",
            )}
          />
        </span>
      </span>
      <span className="flex flex-col gap-0.5">
        <span className="font-medium select-none">
          {label}
          {required ? (
            <span aria-hidden="true" className="ml-0.5 text-[var(--ds-color-destructive)]">*</span>
          ) : null}
        </span>
        <span id={descId} className="text-xs leading-4 text-[var(--ds-color-muted-foreground)]">
          {description}
        </span>
      </span>
    </label>
  );
}

export default RadioWithDescription;

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/* DevSnips React — JavaScript parity build.
 * Same API, behavior, and classes as code.tsx; TypeScript types removed.
 * Regenerated from code.tsx — edit code.tsx and re-run the generator.
 */

import { useId, useState } from "react";
function cx(...parts) {
  return parts.filter(Boolean).join(" ");
}
export function RadioWithDescription({
  label,
  description,
  checked,
  defaultChecked,
  onChange,
  disabled,
  required,
  invalid,
  name,
  value,
  id,
  "aria-describedby": ariaDescribedby,
  className
}) {
  const generatedId = useId();
  const inputId = id ?? `radio-${generatedId}`;
  const descId = `${inputId}-desc`;
  const describedby = [descId, ariaDescribedby].filter(Boolean).join(" ") || undefined;
  const isControlled = checked !== undefined;
  const [internal, setInternal] = useState(defaultChecked ?? false);
  const isChecked = isControlled ? checked : internal;
  function handleChange(event) {
    if (!isControlled) setInternal(event.target.checked);
    onChange?.(event);
  }
  return <label
    htmlFor={inputId}
    className={cx(
      "inline-flex items-start gap-2.5 text-sm leading-5 text-[var(--ds-color-foreground)]",
      disabled ? "cursor-not-allowed opacity-60" : "cursor-pointer",
      className
    )}
  >
      <span className="relative mt-[3px] inline-flex size-[18px] shrink-0 items-center justify-center">
        <input
    id={inputId}
    type="radio"
    aria-describedby={describedby}
    className={cx(
      "size-[18px] cursor-pointer appearance-none rounded-full border bg-[var(--ds-color-input)] transition-colors duration-150 ease-out hover:border-[var(--ds-color-border-strong)] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-[var(--ds-color-focus-ring)] disabled:cursor-not-allowed disabled:opacity-50 motion-reduce:transition-none",
      invalid ? "border-[var(--ds-color-destructive)]" : "border-[var(--ds-color-border)] checked:border-[var(--ds-color-primary)]"
    )}
    checked={isControlled ? isChecked : undefined}
    defaultChecked={isControlled ? undefined : defaultChecked}
    disabled={disabled}
    required={required}
    aria-invalid={invalid ? true : undefined}
    name={name}
    value={value}
    onChange={handleChange}
  />
        <span
    aria-hidden="true"
    className={cx(
      "pointer-events-none absolute inset-0 flex items-center justify-center transition-opacity duration-150 motion-reduce:transition-none",
      isChecked ? "opacity-100" : "opacity-0"
    )}
  >
          <span
    className={cx(
      "block size-[8px] rounded-full",
      invalid ? "bg-[var(--ds-color-destructive)]" : "bg-[var(--ds-color-primary)]"
    )}
  />
        </span>
      </span>
      <span className="flex flex-col gap-0.5">
        <span className="font-medium select-none">
          {label}
          {required ? <span aria-hidden="true" className="ml-0.5 text-[var(--ds-color-destructive)]">*</span> : null}
        </span>
        <span id={descId} className="text-xs leading-4 text-[var(--ds-color-muted-foreground)]">
          {description}
        </span>
      </span>
    </label>;
}

export default RadioWithDescription;

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# Radio With Description

Radio with a strong label plus a supporting description wired via aria-describedby.

## Usage

```tsx
<RadioWithDescription label="Team workspace" description="Shared with your organization." name="workspace" value="team" defaultChecked />
```

## JavaScript

A `code.jsx` build is provided for projects that ship plain JSX. It exposes the same API and behavior as `code.tsx` — only the TypeScript types are removed.

```jsx
<RadioWithDescription label="Team workspace" description="Shared with your organization." name="workspace" value="team" defaultChecked />
```

## Props

| Name | Type | Default | Description |
|---|---|---:|---|
| `label` | `ReactNode` (required) | — | Visible label (omit for an icon-only / aria-label control). |
| `checked` / `defaultChecked` | `boolean` | `false` | Controlled / uncontrolled checked state. |
| `onChange` | `(event) => void` | — | Change callback. |
| `disabled` | `boolean` | — | Disables the control. |
| `required` | `boolean` | — | Marks the field required (renders `*`). |
| `invalid` | `boolean` | — | Sets `aria-invalid` + destructive styling. |
| `name` | `string` | — | Shared group name (groups radios). |
| `value` | `string \| number \| readonly string[]` (required) | — | Native form value. |
| `id` | `string` | generated | Input id (also the label `htmlFor`). |
| `aria-label` / `aria-labelledby` / `aria-describedby` | `string` | — | Override association. |
| `description` | `ReactNode` (required) | — | Supporting description linked with `aria-describedby`. |

## States

Native radio with a bold label and a description block stacked beneath it. The description is linked with `aria-describedby`. The control is top-aligned so the circle lines up with the label.

## Accessibility

`<label htmlFor>` + `aria-describedby={descId}` on the native input. `aria-invalid` when `invalid`, visible `focus-visible` ring.

## Styling

Built with React, Tailwind CSS, and DevSnips design tokens. The component consumes the `--ds-*` semantic tokens via arbitrary values (for example `bg-[var(--ds-color-primary)]`). Define the tokens once in your theme — no component-specific CSS file is required.

## Design Tokens

See [React/DESIGN_TOKENS.md](../../../DESIGN_TOKENS.md) for the authoritative token specification. This radio uses the semantic color, radius, spacing, and motion tokens.

## Notes

Use this when the option needs more than a one-line label to be understood — e.g. a plan or workspace choice where the effect needs a sentence of explanation.