# 菜单栏

- 页面: https://jiguang132.com/zh/resources/mantine/docs/menubar
- 资源: Mantine Core (https://jiguang132.com/zh/resources/mantine.md)
- 全部指南: https://jiguang132.com/zh/resources/mantine/docs.md

Mantine Core 的独立组件，请不要替换为 JGuang UI/Base UI 的同名 API。

## 安装

```bash
npm install @mantine/core@9.7.1 @mantine/hooks@9.7.1
```

入口引入 `@mantine/core/styles.css`，并在根组件使用 `MantineProvider`；通过 `forceColorScheme` 同步深浅色主题。

## 使用与验证

在左侧选择组件，在预览中操作它的状态；使用“查看代码”检查真实源码。安装后执行类型检查和构建，再验证键盘焦点、手机布局与深浅色主题。

## 来源

https://github.com/mantinedev/mantine/tree/f0e2bc6d28b0f0b8aaefb5b859937bf77f539df7
MIT 许可证；不包括付费内容。下方提供上游英文参考内容，中文使用指南已适配；上游详细参考暂保留英文。

---


## 版本与兼容性

固定的 Mantine Core 9.7.1 要求 React 和 React DOM 满足 `^19.2.0`，并配套 `@mantine/hooks@9.7.1`。此条件来自实际 npm 包的 peerDependencies。React 18 或其他不兼容版本不能强行安装；先向项目负责人说明升级影响并确认方案，不使用 --force/--legacy-peer-deps 掩盖冲突。入口的原生 Provider 开启 `theme.respectReducedMotion`，并用 `forceColorScheme` 控制深浅色。

## 适用场景

组合可通过键盘导航的一级菜单栏。

## 本地示例使用的原生参数

以下参数由本地、经过类型检查的 JSX 示例提取，按所属组件区分。不是全部属性清单；完整签名和继承关系见下方固定源码参考。

此最小示例仅传入子内容，未虚构额外属性。可选参数见源码参考。

## 交互与状态检查

当前场景：默认。切换支持的禁用、错误或只读场景后检查真实行为；无此原生状态的组件不会被强行添加统一属性。验证键盘焦点和退出方式，修改值后按原生回调签名连接业务状态。

## 业务接入边界

示例内容和状态仅保存在本地，不提供服务端持久化、授权或数据请求。静态展示组件不应被当作已完成的业务流程。

## 宿主配置

先安装固定版本 @mantine/core 和 @mantine/hooks，在入口引入 @mantine/core/styles.css，并使用 MantineProvider。示例的 theme 和 variant 是 JGuang 编写的宿主参数，不是所有原生组件都接受的统一 API；通过 forceColorScheme 同步应用主题。源码面板中的原生实现仅供阅读，使用 npm 导出，不要单独复制内部实现。此批只覆盖 Core，不包括日期、图表和表单扩展包。上游详细说明保留英文，不宣称全文中文化。


## 可运行用法

以下代码使用资源原生 API；不是把其他设计系统的同名组件替换进来。

```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>;
}

```


## 可用状态与示例

默认

示例遵循 Mantine 原生 API。支持多状态的输入组件可将示例中的 variant 改为 Disabled、Invalid 或 Read only；这些只是示例标签，不是新增的组件属性。改造时保留组件要求的数据、受控值、store 和复合子组件结构。


## 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


## 源码参数参考

以下实现签名和类型从本地固定版本源码生成。保留可选属性、原生继承类型、联合分支和 never 限制；不会将其他设计系统的 API 混入。forwardRef 实现中的 ref 属于 React 引用，不是新增业务属性。此区域是原始类型参考，不是上游说明的全文翻译。


```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>[];
```


### 原生与外部类型

以下外部类型仍由 React 或资源自身依赖定义，没有手工展开为虚构属性。实际可用类型以安装版本的 TypeScript 检查为准。


```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
```

---

JGuang 全部资源索引: https://jiguang132.com/llms.txt