electron/docs/api/menu-item.md
Shelley Vohr 554ee92b39
docs: specify use case for the 'services' role (#18484)
* docs: specify use case for the 'services' role

* update based on @caesar's recommendation

Co-Authored-By: Caesar Schinas <caesar@caesarschinas.com>
2019-05-30 14:33:48 -07:00

8.8 KiB

Class: MenuItem

Add items to native application menus and context menus.

Process: Main

See Menu for examples.

new MenuItem(options)

  • options Object
    • click Function (optional) - Will be called with click(menuItem, browserWindow, event) when the menu item is clicked.
    • 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, close, minimize, zoom, front, appMenu, fileMenu, editMenu, viewMenu or windowMenu - Define the action of the menu item, when specified the click property will be ignored. See roles.
    • type String (optional) - Can be normal, separator, submenu, checkbox or radio.
    • label String (optional)
    • sublabel String (optional)
    • accelerator Accelerator (optional)
    • icon (NativeImage | String) (optional)
    • enabled Boolean (optional) - If false, the menu item will be greyed out and unclickable.
    • acceleratorWorksWhenHidden Boolean (optional) - default is true, and when false will prevent the accelerator from triggering the item if the item is not visible`. macOS
    • 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) - If false, the accelerator won't be registered with the system, but it will still be displayed. Defaults to true.
    • submenu (MenuItemConstructorOptions[] | Menu) (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 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
  • 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.)
  • about - Map to the orderFrontStandardAboutPanel action.
  • 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" 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, this property can be dynamically changed.

menuItem.click

A Function that is fired when the MenuItem receives a click event. It can be called with menuItem.click(event, focusedWindow, focusedWebContents).

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.

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, this property can be dynamically changed.

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.