## Class: MenuItem

> Add items to native application menus and context menus.

Process: [Main](../glossary.md#main-process)

See [`Menu`](menu.md) for examples.

### `new MenuItem(options)`

* `options` Object
  * `click` Function (optional) - Will be called with
    `click(menuItem, browserWindow, event)` when the menu item is clicked.
    * `menuItem` MenuItem
    * `browserWindow` [BrowserWindow](browser-window.md) | undefined - This will not be defined if no window is open.
    * `event` [KeyboardEvent](structures/keyboard-event.md)
  * `role` String (optional) - Can be `undo`, `redo`, `cut`, `copy`, `paste`, `pasteAndMatchStyle`, `delete`, `selectAll`, `reload`, `forceReload`, `toggleDevTools`, `resetZoom`, `zoomIn`, `zoomOut`, `togglefullscreen`, `window`, `minimize`, `close`, `help`, `about`, `services`, `hide`, `hideOthers`, `unhide`, `quit`, `startSpeaking`, `stopSpeaking`, `zoom`, `front`, `appMenu`, `fileMenu`, `editMenu`, `viewMenu`, `recentDocuments`, `toggleTabBar`, `selectNextTab`, `selectPreviousTab`, `mergeAllWindows`, `clearRecentDocuments`, `moveTabToNewWindow` or `windowMenu` - Define the action of the menu item, when specified the
    `click` property will be ignored. See [roles](#roles).
  * `type` String (optional) - Can be `normal`, `separator`, `submenu`, `checkbox` or
    `radio`.
  * `label` String (optional)
  * `sublabel` String (optional)
  * `toolTip` String (optional) _macOS_ - Hover text for this menu item.
  * `accelerator` [Accelerator](accelerator.md) (optional)
  * `icon` ([NativeImage](native-image.md) | String) (optional)
  * `enabled` Boolean (optional) - If false, the menu item will be greyed out and
    unclickable.
  * `acceleratorWorksWhenHidden` Boolean (optional) _macOS_ - default is `true`, and when `false` will prevent the accelerator from triggering the item if the item is not visible`.
  * `visible` Boolean (optional) - If false, the menu item will be entirely hidden.
  * `checked` Boolean (optional) - Should only be specified for `checkbox` or `radio` type
    menu items.
  * `registerAccelerator` Boolean (optional) _Linux_ _Windows_ - If false, the accelerator won't be registered
    with the system, but it will still be displayed. Defaults to true.
  * `submenu` (MenuItemConstructorOptions[] | [Menu](menu.md)) (optional) - Should be specified
    for `submenu` type menu items. If `submenu` is specified, the `type: 'submenu'` can be omitted.
    If the value is not a [`Menu`](menu.md) then it will be automatically converted to one using
    `Menu.buildFromTemplate`.
  * `id` String (optional) - Unique within a single menu. If defined then it can be used
    as a reference to this item by the position attribute.
  * `before` String[] (optional) - Inserts this item before the item with the specified label. If
    the referenced item doesn't exist the item will be inserted at the end of  the menu. Also implies
    that the menu item in question should be placed in the same “group” as the item.
  * `after` String[] (optional) - Inserts this item after the item with the specified label. If the
    referenced item doesn't exist the item will be inserted at the end of
    the menu.
  * `beforeGroupContaining` String[] (optional) - Provides a means for a single context menu to declare
    the placement of their containing group before the containing group of the item
    with the specified label.
  * `afterGroupContaining` String[] (optional) - Provides a means for a single context menu to declare
    the placement of their containing group after the containing group of the item
    with the specified label.

**Note:** `acceleratorWorksWhenHidden` is specified as being macOS-only because accelerators always work when items are hidden on Windows and Linux. The option is exposed to users to give them the option to turn it off, as this is possible in native macOS development. This property is only usable on macOS High Sierra 10.13 or newer.

### Roles

Roles allow menu items to have predefined behaviors.

It is best to specify `role` for any menu item that matches a standard role,
rather than trying to manually implement the behavior in a `click` function.
The built-in `role` behavior will give the best native experience.

The `label` and `accelerator` values are optional when using a `role` and will
default to appropriate values for each platform.

Every menu item must have either a `role`, `label`, or in the case of a separator
a `type`.

The `role` property can have following values:

* `undo`
* `about` - Trigger a native about panel (custom message box on Window, which does not provide its own).
* `redo`
* `cut`
* `copy`
* `paste`
* `pasteAndMatchStyle`
* `selectAll`
* `delete`
* `minimize` - Minimize current window.
* `close` - Close current window.
* `quit` - Quit the application.
* `reload` - Reload the current window.
* `forceReload` - Reload the current window ignoring the cache.
* `toggleDevTools` - Toggle developer tools in the current window.
* `togglefullscreen` - Toggle full screen mode on the current window.
* `resetZoom` - Reset the focused page's zoom level to the original size.
* `zoomIn` - Zoom in the focused page by 10%.
* `zoomOut` - Zoom out the focused page by 10%.
* `fileMenu` - Whole default "File" menu (Close / Quit)
* `editMenu` - Whole default "Edit" menu (Undo, Copy, etc.).
* `viewMenu` - Whole default "View" menu (Reload, Toggle Developer Tools, etc.)
* `windowMenu` - Whole default "Window" menu (Minimize, Zoom, etc.).

The following additional roles are available on _macOS_:

* `appMenu` - Whole default "App" menu (About, Services, etc.)
* `hide` - Map to the `hide` action.
* `hideOthers` - Map to the `hideOtherApplications` action.
* `unhide` - Map to the `unhideAllApplications` action.
* `startSpeaking` - Map to the `startSpeaking` action.
* `stopSpeaking` - Map to the `stopSpeaking` action.
* `front` - Map to the `arrangeInFront` action.
* `zoom` - Map to the `performZoom` action.
* `toggleTabBar` - Map to the `toggleTabBar` action.
* `selectNextTab` - Map to the `selectNextTab` action.
* `selectPreviousTab` - Map to the `selectPreviousTab` action.
* `mergeAllWindows` - Map to the `mergeAllWindows` action.
* `moveTabToNewWindow` - Map to the `moveTabToNewWindow` action.
* `window` - The submenu is a "Window" menu.
* `help` - The submenu is a "Help" menu.
* `services` - The submenu is a ["Services"](https://developer.apple.com/documentation/appkit/nsapplication/1428608-servicesmenu?language=objc) menu. This is only intended for use in the Application Menu and is *not* the same as the "Services" submenu used in context menus in macOS apps, which is not implemented in Electron.
* `recentDocuments` - The submenu is an "Open Recent" menu.
* `clearRecentDocuments` - Map to the `clearRecentDocuments` action.

When specifying a `role` on macOS, `label` and `accelerator` are the only
options that will affect the menu item. All other options will be ignored.
Lowercase `role`, e.g. `toggledevtools`, is still supported.

**Nota Bene:** The `enabled` and `visibility` properties are not available for top-level menu items in the tray on macOS.

### Instance Properties

The following properties are available on instances of `MenuItem`:

#### `menuItem.id`

A `String` indicating the item's unique id, this property can be
dynamically changed.

#### `menuItem.label`

A `String` indicating the item's visible label.

#### `menuItem.click`

A `Function` that is fired when the MenuItem receives a click event.
It can be called with `menuItem.click(event, focusedWindow, focusedWebContents)`.
* `event` [KeyboardEvent](structures/keyboard-event.md)
* `focusedWindow` [BrowserWindow](browser-window.md)
* `focusedWebContents` [WebContents](web-contents.md)

#### `menuItem.submenu`

A `Menu` (optional) containing the menu
item's submenu, if present.

#### `menuItem.type`

A `String` indicating the type of the item. Can be `normal`, `separator`, `submenu`, `checkbox` or `radio`.

#### `menuItem.role`

A `String` (optional) indicating the item's role, if set. Can be `undo`, `redo`, `cut`, `copy`, `paste`, `pasteAndMatchStyle`, `delete`, `selectAll`, `reload`, `forceReload`, `toggleDevTools`, `resetZoom`, `zoomIn`, `zoomOut`, `togglefullscreen`, `window`, `minimize`, `close`, `help`, `about`, `services`, `hide`, `hideOthers`, `unhide`, `quit`, `startSpeaking`, `stopSpeaking`, `zoom`, `front`, `appMenu`, `fileMenu`, `editMenu`, `viewMenu`, `recentDocuments`, `toggleTabBar`, `selectNextTab`, `selectPreviousTab`, `mergeAllWindows`, `clearRecentDocuments`, `moveTabToNewWindow` or `windowMenu`

#### `menuItem.accelerator`

A `Accelerator` (optional) indicating the item's accelerator, if set.

#### `menuItem.icon`

A `NativeImage | String` (optional) indicating the
item's icon, if set.

#### `menuItem.sublabel`

A `String` indicating the item's sublabel.

#### `menuItem.toolTip` _macOS_

A `String` indicating the item's hover text.

#### `menuItem.enabled`

A `Boolean` indicating whether the item is enabled, this property can be
dynamically changed.

#### `menuItem.visible`

A `Boolean` indicating whether the item is visible, this property can be
dynamically changed.

#### `menuItem.checked`

A `Boolean` indicating whether the item is checked, this property can be
dynamically changed.

A `checkbox` menu item will toggle the `checked` property on and off when
selected.

A `radio` menu item will turn on its `checked` property when clicked, and
will turn off that property for all adjacent items in the same menu.

You can add a `click` function for additional behavior.

#### `menuItem.registerAccelerator`

A `Boolean` indicating if the accelerator should be registered with the
system or just displayed.

This property can be dynamically changed.

#### `menuItem.commandId`

A `Number` indicating an item's sequential unique id.

#### `menuItem.menu`

A `Menu` that the item is a part of.
