# Menubar

- Page: https://jiguang132.com/resources/mantine/docs/menubar
- Resource: Mantine Core (https://jiguang132.com/resources/mantine.md)
- All guides: https://jiguang132.com/resources/mantine/docs.md

Install: `npm install @mantine/core@9.7.1 @mantine/hooks@9.7.1`

## Version and compatibility

Pinned Mantine Core 9.7.1 requires React and React DOM `^19.2.0` and matching `@mantine/hooks@9.7.1`, from the installed npm package's peerDependencies. Do not force it into React 18 or another incompatible version. Explain upgrade impact and agree on a plan with the project owner; do not hide conflicts with --force/--legacy-peer-deps. The native Provider enables `theme.respectReducedMotion` and uses `forceColorScheme` for light/dark.

## Use case

Compose a keyboard-navigable top-level menu bar.

## Native props used by this example

These props are extracted from the local typechecked JSX and grouped by their owning native component. This is not an exhaustive prop list; see pinned source signatures and inheritance below.

This minimal example passes children only; no additional props are invented. Optional props are in the source reference.

## Interaction and state checks

Current scenarios: Default. Check actual behavior after selecting supported disabled/error/read-only scenarios; components without those native states do not receive invented universal props. Verify keyboard focus and exits, then connect changed values through the native callback signature.

## Business integration boundary

Demo content/state is local, without server persistence, authorization or fetching. A static display component is not a completed business workflow.

## Host setup

Install pinned @mantine/core and @mantine/hooks, import @mantine/core/styles.css at the entry and use MantineProvider. The example's theme/variant are JGuang-authored host props, not universal native component APIs; forceColorScheme synchronizes the app theme. Native implementation source is a reading reference: use npm exports rather than copying internal engines. This batch covers Core, not dates/charts/forms extension packages. Detailed upstream prose remains English.


## Runnable usage

```tsx
import { useState } from 'react';
import * as M from '@mantine/core';
import '@mantine/core/styles.css';


function ComponentPreview({ variant = 'Default' }: { variant?: string }) {

return <M.Menubar>{["File", "Edit"].map((label) => <M.Menubar.Menu key={label}><M.Menubar.Target>{label}</M.Menubar.Target><M.Menubar.Dropdown><M.Menu.Item>New</M.Menu.Item><M.Menu.Item>Save</M.Menu.Item></M.Menubar.Dropdown></M.Menubar.Menu>)}</M.Menubar>;
}
export default function Example({ variant = 'Default', theme = 'light' }: { variant?: string; theme?: 'light' | 'dark' }) {
return <M.MantineProvider forceColorScheme={theme} theme={{ respectReducedMotion: true }}><ComponentPreview variant={variant} /></M.MantineProvider>;
}

```


## Preview states

Default

The example uses the native Mantine API. For supported input demos, change the local variant to Disabled, Invalid or Read only; these are example labels, not new component props. Keep the documented data, controlled values, stores and compound children when adapting the example.



## Usage

`Menubar` is a desktop-application style menu bar: a horizontal row of triggers
(File, Edit, View, …), each of them opens a dropdown. `Menubar` is built on top of
[Menu](/core/menu), dropdown content is composed from `Menu.Item`, `Menu.Divider` and other
`Menu` components.



## How it differs from Menu

[Menu](/core/menu) is one target that toggles one dropdown. `Menubar` coordinates multiple menus:

- Only one menu is open at a time. Moving to another target while a menu is open switches the open menu.
- The whole bar is a single tab stop, arrow keys move focus between targets.

If you need a single dropdown attached to one button, use [Menu](/core/menu) instead.

## Composition

- `Menubar` – root element
- `Menubar.Menu` – wraps a single menu, accepts the same props as `Menu`
- `Menubar.Target` – top-level trigger button
- `Menubar.Dropdown` – dropdown container, accepts the same children as `Menu.Dropdown`

```tsx
import { Menu, Menubar } from '@mantine/core';

function Demo() {
  return (
    <Menubar>
      <Menubar.Menu>
        <Menubar.Target>File</Menubar.Target>
        <Menubar.Dropdown>
          <Menu.Item>New file</Menu.Item>
          <Menu.Item>Open…</Menu.Item>
        </Menubar.Dropdown>
      </Menubar.Menu>

      <Menubar.Menu>
        <Menubar.Target>Edit</Menubar.Target>
        <Menubar.Dropdown>
          <Menu.Item>Undo</Menu.Item>
          <Menu.Item>Redo</Menu.Item>
        </Menubar.Dropdown>
      </Menubar.Menu>
    </Menubar>
  );
}
```

## Trigger and loop

By default, a menu opens when its target is clicked. Once a menu is open, hovering another
target switches to it. Set `trigger="hover"` to open menus on hover, the menu closes when
the pointer leaves the bar.

Set `loop={false}` to stop arrow key navigation from wrapping around from the last menu
to the first and vice versa.



## Submenus

Use `Menu.Sub` inside `Menubar.Dropdown` to create nested submenus, see the
[Menu submenus documentation](/core/menu/#submenus). The [usage demo](#usage) includes
a submenu in the File menu.

## Checkbox and radio items

Use `Menu.CheckboxItem` for toggles and `Menu.RadioGroup` with `Menu.RadioItem` for
single-choice options. By default, clicking these items does not close the menu.



## Controlled

Use `openIndex` and `onOpenChange` props to control which menu is open. `openIndex` is the
index of the opened `Menubar.Menu` or `null` when all menus are closed.

Use `defaultOpenIndex` to open a menu initially without controlling the state.



## Position

By default, dropdowns are positioned at `bottom-start`. Set the `position` prop to use a different
[Floating UI position](/core/popover/#position-and-placement) for all menus in the bar:

```tsx
import { Menubar } from '@mantine/core';

function Demo() {
  return (
    <Menubar position="bottom-end">
      {/* ...menus */}
    </Menubar>
  );
}
```

To override settings of a single menu, pass [Menu](/core/menu) props to `Menubar.Menu`,
for example `position` or `closeOnItemClick`.

## Keyboard interactions

When RTL direction is set, `ArrowLeft` and `ArrowRight` are swapped.





## Accessibility

`Menubar` follows the [WAI-ARIA menubar pattern](https://www.w3.org/WAI/ARIA/apg/patterns/menubar/):

- The root element has `role="menubar"`
- Each `Menubar.Target` has `role="menuitem"`, `aria-haspopup="menu"` and `aria-expanded`
- `Menubar.Target` children are used as accessible names of the triggers


## Source-backed parameter reference

Implementation signatures and types are generated from the pinned local source. Optional props, native inherited types, union branches and never exclusions are preserved. A forwardRef implementation's ref is a React reference, not an additional business prop.


```ts
Menubar(_props)
```



```ts
export type MenubarStylesNames = 'root' | 'target';

export type MenubarFactory = Factory<{
  props: MenubarProps;
  ref: HTMLDivElement;
  stylesNames: MenubarStylesNames;
  staticComponents: {
    Menu: typeof MenubarMenu;
    Target: typeof MenubarTarget;
    Dropdown: typeof MenubarDropdown;
  };
}>;

export interface MenubarProps
  extends BoxProps, StylesApiProps<MenubarFactory>, ElementProps<'div'> {
  /** `Menubar.Menu` components */
  children?: React.ReactNode;

  /** Index of the controlled opened menu, `null` closes all menus */
  openIndex?: number | null;

  /** Index of the opened menu for uncontrolled component @default `null` */
  defaultOpenIndex?: number | null;

  /** Called when the opened menu changes with its index or `null` when all menus are closed */
  onOpenChange?: (index: number | null) => void;

  /** Event that opens a menu when none of the menus is opened. `'click'` opens a menu on target click and then switches menus on hover (desktop application pattern), `'hover'` opens a menu when the target is hovered @default `'click'` */
  trigger?: 'click' | 'hover';

  /** If set, arrow key navigation wraps from last to first menu and vice versa @default `true` */
  loop?: boolean;

  /** Dropdown position relative to the target element @default `'bottom-start'` */
  position?: FloatingPosition;
}

export type Mod = Record<string, any> | string;

export type BoxMod = Mod | Mod[] | BoxMod[];

export interface BoxProps extends MantineStyleProps {
  /** Class added to the root element, if applicable */
  className?: string | undefined;

  /** Inline style added to root component element, can subscribe to theme defined on MantineProvider */
  style?: MantineStyleProp;

  /** CSS variables defined on root component element */
  __vars?: CssVarsProp;

  /** `size` property passed down the HTML element */
  __size?: string;

  /** Breakpoint above which the component is hidden with `display: none` */
  hiddenFrom?: MantineBreakpoint;

  /** Breakpoint below which the component is hidden with `display: none` */
  visibleFrom?: MantineBreakpoint;

  /** Determines whether component should be hidden in light color scheme with `display: none` */
  lightHidden?: boolean;

  /** Determines whether component should be hidden in dark color scheme with `display: none` */
  darkHidden?: boolean;

  /** Element modifiers transformed into `data-` attributes, for example, `{ 'data-size': 'xl' }`, falsy values are removed */
  mod?: BoxMod;
}

export type ElementProps<
  ElementType extends React.ElementType,
  PropsToOmit extends string = never,
> = Omit<React.ComponentProps<ElementType>, 'style' | PropsToOmit>;

export interface CSSProperties extends React.CSSProperties {
  [key: string]: any;
}

type MantineStyle = CSSProperties | ((theme: MantineTheme) => CSSProperties);

export type MantineStyleProp = MantineStyle | MantineStyle[] | MantineStyleProp[] | undefined;

export type CssVariable = `--${string}`;

export type CssVariables<Variable extends string = CssVariable> = Partial<Record<Variable, string>>;

export type CssVars<Variable extends string = CssVariable> =
  | CssVariables<Variable>
  | ((theme: MantineTheme) => CssVariables<Variable>)
  | CssVars<Variable>[];

export type CssVarsProp<Variable extends string = CssVariable> =
  | CssVars<Variable>
  | CssVars<Variable>[];
```


### Native and external types

External types remain defined by React or native dependencies, not manually expanded into guessed props. The installed version's TypeScript definitions are authoritative.


```ts
Factory<{
  props: MenubarProps;
  ref: HTMLDivElement;
  stylesNames: MenubarStylesNames;
  staticComponents: {
    Menu: typeof MenubarMenu;
    Target: typeof MenubarTarget;
    Dropdown: typeof MenubarDropdown;
  };
}>
MantineStyleProps
React.CSSProperties
MantineTheme
Partial<Record<Variable, string>>
Record<Variable, string>
Variable
MantineBreakpoint
Record<string, any>
StylesApiProps<MenubarFactory>
React.ElementType
Omit<React.ComponentProps<ElementType>, 'style' | PropsToOmit>
React.ComponentProps<ElementType>
ElementType
PropsToOmit
React.ReactNode
FloatingPosition
HTMLDivElement
```

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