# Button Group

- Page: https://jiguang132.com/resources/material-ui/docs/button-group
- Resource: Material UI (https://jiguang132.com/resources/material-ui.md)
- All guides: https://jiguang132.com/resources/material-ui/docs.md

Visually join related native Buttons into one action group.

This guide covers Material UI Core with the default Emotion engine; extensions and additional demos are explicitly classified.

## Use case and business boundary

Grouping does not manage selection; use ToggleButtonGroup for selection and wire split-menu state explicitly.

## Native composition and scope

`Button`, `ButtonGroup`

Preserve native Material UI composition and types; do not substitute JGuang UI/Base UI/Radix APIs. Example entries are not extra components.

## Native installation and initialization

```bash
npm install @mui/material@9.4.0 @emotion/react@11.14.0 @emotion/styled@11.14.1
```

Use native npm and Emotion, not an invented JGuang UI Registry URL. Place examples inside native ThemeProvider; choose CssBaseline or ScopedCssBaseline for the project. Inspect React, existing providers, lockfile and SSR first. Never overwrite files or conceal peer conflicts. This batch verified React 19.2.8; React 18 and below require matching react-is. See the included bilingual setup guide.

## Practical native parameters

These selected parameters are not a flattened universal API. Preserve the native declaring owner, slot structure, nullable values and generics.

| Owner.prop | Practical role | Declaration source |
| --- | --- | --- |
| `ButtonGroup.variant` | Owning native presentation enum; never substitute a universal variant prop. | `ButtonGroup` |
| `ButtonGroup.orientation` | Native horizontal/vertical orientation, with owner-specific layout behavior. | `ButtonGroup` |
| `ButtonGroup.disabled` | Native disabled interaction state; not an authorization check. | `ButtonGroup` |
| `ButtonGroup.size` | Owning native size: enum for controls, responsive column span for Grid. | `ButtonGroup` |

## Runnable native examples

Machine keys select example entries, not universal variant props. Native demo JSX/data stay unchanged; JGuang-authored acceptance fixtures are explicitly labelled.

- Basic button group · `BasicButtonGroup` · upstream native demo
- Button variants · `VariantButtonGroup` · upstream native demo
- Sizes and colors · `GroupSizesColors` · upstream native demo
- Vertical group · `GroupOrientation` · upstream native demo
- Split button · `SplitButton` · upstream native demo
- Disabled elevation · `DisableElevation` · upstream native demo
- Loading · `LoadingButtonGroup` · upstream native demo

## Actual usage example

Unmodified pinned native demo; copy its required local helper files together.

```tsx
import Button from '@mui/material/Button';
import ButtonGroup from '@mui/material/ButtonGroup';

export default function BasicButtonGroup() {
  return (
    <ButtonGroup variant="contained" aria-label="Basic button group">
      <Button>One</Button>
      <Button>Two</Button>
      <Button>Three</Button>
    </ButtonGroup>
  );
}

```

## Example dependency boundaries

`@mui/material/Button`, `@mui/material/ButtonGroup`, `@mui/material/Box`, `react`, `@mui/icons-material/ArrowDropDown`, `@mui/material/ClickAwayListener`, `@mui/material/Grow`, `@mui/material/Paper`, `@mui/material/Popper`, `@mui/material/MenuItem`, `@mui/material/MenuList`, `@mui/icons-material/Save`

Direct Icons/System/Utils example imports require their matching 9.4.0 packages. Relative data/helpers are part of the example closure, not extra components. Remote images and simulated operations do not supply a backend.

## Pinned upstream API metadata reference

These tables retain the upstream metadata, not a newly inferred generic type system. Conditional generics, inherited props and callback details are defined by the source declarations below. Theme defaults may override metadata defaults.

### Button

```tsx
import Button from '@mui/material/Button';
import { Button } from '@mui/material';
```

Native inheritance: `ButtonBase`. Parent/DOM props are not fabricated as additional own props.

| Prop | Required | Upstream metadata type / constraint | Metadata default |
| --- | --- | --- | --- |
| `children` | no | `node` | — |
| `classes` | no | `object` | — |
| `color` | no | `'inherit' \| 'primary' \| 'secondary' \| 'success' \| 'error' \| 'info' \| 'warning' \| string` | `'primary'` |
| `component` | no | `elementType` | — |
| `disabled` | no | `bool` | `false` |
| `disableElevation` | no | `bool` | `false` |
| `disableFocusRipple` | no | `bool` | `false` |
| `disableRipple` | no | `bool` | `false` |
| `endIcon` | no | `node` | — |
| `fullWidth` | no | `bool` | `false` |
| `href` | no | `string` | — |
| `loading` | no | `bool` | `null` |
| `loadingIndicator` | no | `node` | `<CircularProgress color="inherit" size={16} />` |
| `loadingPosition` | no | `'center' \| 'end' \| 'start'` | `'center'` |
| `size` | no | `'small' \| 'medium' \| 'large' \| string` | `'medium'` |
| `startIcon` | no | `node` | — |
| `sx` | no | `Array<func \| object \| bool> \| func \| object` | — |
| `variant` | no | `'contained' \| 'outlined' \| 'text' \| string` | `'text'` |



### ButtonGroup

```tsx
import ButtonGroup from '@mui/material/ButtonGroup';
import { ButtonGroup } from '@mui/material';
```

| Prop | Required | Upstream metadata type / constraint | Metadata default |
| --- | --- | --- | --- |
| `children` | no | `node` | — |
| `classes` | no | `object` | — |
| `color` | no | `'inherit' \| 'primary' \| 'secondary' \| 'error' \| 'info' \| 'success' \| 'warning' \| string` | `'primary'` |
| `component` | no | `elementType` | — |
| `disabled` | no | `bool` | `false` |
| `disableElevation` | no | `bool` | `false` |
| `disableFocusRipple` | no | `bool` | `false` |
| `disableRipple` | no | `bool` | `false` |
| `fullWidth` | no | `bool` | `false` |
| `orientation` | no | `'horizontal' \| 'vertical'` | `'horizontal'` |
| `size` | no | `'small' \| 'medium' \| 'large' \| string` | `'medium'` |
| `sx` | no | `Array<func \| object \| bool> \| func \| object` | — |
| `variant` | no | `'contained' \| 'outlined' \| 'text' \| string` | `'outlined'` |


## Native source declarations

Declarations/imports are extracted from pinned source without flattening unions or external inheritance. Original English comments/types are source reference, not a claim of translated upstream prose. Shared types stay in their native packages.

### vendor/src/Button/Button.d.ts

```ts
import * as React from 'react';

import { DistributiveOmit, OverridableStringUnion } from '@mui/types';

import { SxProps } from '@mui/system';

import { Theme } from '../styles';

import { ExtendButtonBase, ExtendButtonBaseTypeMap } from '../ButtonBase';

import { OverrideProps, OverridableComponent, OverridableTypeMap } from '../OverridableComponent';

import { ButtonClasses } from './buttonClasses';

export interface ButtonPropsVariantOverrides {}

export interface ButtonPropsColorOverrides {}

export interface ButtonPropsSizeOverrides {}

export interface ButtonOwnProps {
  /**
   * The content of the component.
   */
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<ButtonClasses> | undefined;
  /**
   * The color of the component.
   * It supports both default and custom theme colors, which can be added as shown in the
   * [palette customization guide](https://mui.com/material-ui/customization/palette/#custom-colors).
   * @default 'primary'
   */
  color?:
    | OverridableStringUnion<
        'inherit' | 'primary' | 'secondary' | 'success' | 'error' | 'info' | 'warning',
        ButtonPropsColorOverrides
      >
    | undefined;
  /**
   * If `true`, the component is disabled.
   * @default false
   */
  disabled?: boolean | undefined;
  /**
   * If `true`, no elevation is used.
   * @default false
   */
  disableElevation?: boolean | undefined;
  /**
   * If `true`, the  keyboard focus ripple is disabled.
   * @default false
   */
  disableFocusRipple?: boolean | undefined;
  /**
   * Element placed after the children.
   */
  endIcon?: React.ReactNode;
  /**
   * If `true`, the button will take up the full width of its container.
   * @default false
   */
  fullWidth?: boolean | undefined;
  /**
   * The URL to link to when the button is clicked.
   * If defined, an `a` element will be used as the root node.
   */
  href?: string | undefined;
  /**
   * If `true`, the loading indicator is visible and the button is disabled.
   * If `true | false`, the loading wrapper is always rendered before the children to prevent [Google Translation Crash](https://github.com/mui/material-ui/issues/27853).
   * @default null
   */
  loading?: boolean | null | undefined;
  /**
   * Element placed before the children if the button is in loading state.
   * The node should contain an element with `role="progressbar"` with an accessible name.
   * By default, it renders a `CircularProgress` that is labeled by the button itself.
   * @default <CircularProgress color="inherit" size={16} />
   */
  loadingIndicator?: React.ReactNode;
  /**
   * The loading indicator can be positioned on the start, end, or the center of the button.
   * @default 'center'
   */
  loadingPosition?: 'start' | 'end' | 'center' | undefined;
  /**
   * The size of the component.
   * `small` is equivalent to the dense button styling.
   * @default 'medium'
   */
  size?: OverridableStringUnion<'small' | 'medium' | 'large', ButtonPropsSizeOverrides> | undefined;
  /**
   * Element placed before the children.
   */
  startIcon?: React.ReactNode;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
  /**
   * The variant to use.
   * @default 'text'
   */
  variant?:
    | OverridableStringUnion<'text' | 'outlined' | 'contained', ButtonPropsVariantOverrides>
    | undefined;
}

export type ButtonTypeMap<
  AdditionalProps = {},
  RootComponent extends React.ElementType = 'button',
> = ExtendButtonBaseTypeMap<{
  props: AdditionalProps & ButtonOwnProps;
  defaultComponent: RootComponent;
}>;

export interface ExtendButtonTypeMap<TypeMap extends OverridableTypeMap> {
  props: TypeMap['props'] &
    (TypeMap['props'] extends { classes?: Record<string, string> | undefined }
      ? DistributiveOmit<ButtonTypeMap['props'], 'classes'>
      : ButtonTypeMap['props']);
  defaultComponent: TypeMap['defaultComponent'];
}

export type ExtendButton<TypeMap extends OverridableTypeMap> = ((
  props: { href: string } & OverrideProps<ExtendButtonBaseTypeMap<TypeMap>, 'a'>,
) => React.JSX.Element) &
  OverridableComponent<ExtendButtonBaseTypeMap<TypeMap>>;

declare const Button: ExtendButtonBase<ButtonTypeMap>;

export type ButtonProps<
  RootComponent extends React.ElementType = ButtonTypeMap['defaultComponent'],
  AdditionalProps = {},
> = OverrideProps<ButtonTypeMap<AdditionalProps, RootComponent>, RootComponent> & {
  component?: React.ElementType | undefined;
};
```

### vendor/src/ButtonGroup/ButtonGroup.d.ts

```ts
import * as React from 'react';

import { SxProps } from '@mui/system';

import { OverridableStringUnion } from '@mui/types';

import { OverridableComponent, OverrideProps } from '../OverridableComponent';

import { Theme } from '../styles';

import { ButtonGroupClasses } from './buttonGroupClasses';

export interface ButtonGroupPropsColorOverrides {}

export interface ButtonGroupPropsVariantOverrides {}

export interface ButtonGroupPropsSizeOverrides {}

export interface ButtonGroupOwnProps {
  /**
   * The content of the component.
   */
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<ButtonGroupClasses> | undefined;
  /**
   * The color of the component.
   * It supports both default and custom theme colors, which can be added as shown in the
   * [palette customization guide](https://mui.com/material-ui/customization/palette/#custom-colors).
   * @default 'primary'
   */
  color?:
    | OverridableStringUnion<
        'inherit' | 'primary' | 'secondary' | 'error' | 'info' | 'success' | 'warning',
        ButtonGroupPropsColorOverrides
      >
    | undefined;
  /**
   * If `true`, the component is disabled.
   * @default false
   */
  disabled?: boolean | undefined;
  /**
   * If `true`, no elevation is used.
   * @default false
   */
  disableElevation?: boolean | undefined;
  /**
   * If `true`, the button keyboard focus ripple is disabled.
   * @default false
   */
  disableFocusRipple?: boolean | undefined;
  /**
   * If `true`, the button ripple effect is disabled.
   * @default false
   */
  disableRipple?: boolean | undefined;
  /**
   * If `true`, the buttons will take up the full width of its container.
   * @default false
   */
  fullWidth?: boolean | undefined;
  /**
   * The component orientation (layout flow direction).
   * @default 'horizontal'
   */
  orientation?: 'vertical' | 'horizontal' | undefined;
  /**
   * The size of the component.
   * `small` is equivalent to the dense button styling.
   * @default 'medium'
   */
  size?:
    OverridableStringUnion<'small' | 'medium' | 'large', ButtonGroupPropsSizeOverrides> | undefined;
  /**
   * The variant to use.
   * @default 'outlined'
   */
  variant?:
    | OverridableStringUnion<'text' | 'outlined' | 'contained', ButtonGroupPropsVariantOverrides>
    | undefined;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
}

export interface ButtonGroupTypeMap<
  AdditionalProps = {},
  RootComponent extends React.ElementType = 'div',
> {
  props: AdditionalProps & ButtonGroupOwnProps;
  defaultComponent: RootComponent;
}

declare const ButtonGroup: OverridableComponent<ButtonGroupTypeMap>;

export type ButtonGroupProps<
  RootComponent extends React.ElementType = ButtonGroupTypeMap['defaultComponent'],
  AdditionalProps = {},
> = OverrideProps<ButtonGroupTypeMap<AdditionalProps, RootComponent>, RootComponent> & {
  component?: React.ElementType | undefined;
};
```

## Post-install acceptance

Run strict types, production build and real interactions. Check keyboard labels/focus, disabled/error/read-only semantics where natively supported, both themes, narrow screens and reduced motion. Verify callbacks against the real host data; do not declare installation complete from copying a prompt. Initialization fixtures also require server HTML and warning-free hydration.

## Source and license

https://github.com/mui/material-ui/tree/809a7717b4c050ba3f69b75300689f07c050a16e

MIT · @mui/material@9.4.0. Vendor originals and license are preserved. Full original upstream prose remains in vendor/docs and is not represented as fully translated.

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