9.7 KiB
Class: Menu
Create native application menus and context menus.
Process: Main
new Menu()
Creates a new menu.
Static Methods
The menu
class has the following static methods:
Menu.setApplicationMenu(menu)
menu
Menu | null
Sets menu
as the application menu on macOS. On Windows and Linux, the
menu
will be set as each window's top menu.
Passing null
will remove the menu bar on Windows and Linux but has no
effect on macOS.
Note: This API has to be called after the ready
event of app
module.
Menu.getApplicationMenu()
Returns Menu | null
- The application menu, if set, or null
, if not set.
Note: The returned Menu
instance doesn't support dynamic addition or
removal of menu items. Instance properties can still
be dynamically modified.
Menu.sendActionToFirstResponder(action)
macOS
action
String
Sends the action
to the first responder of application. This is used for
emulating default macOS menu behaviors. Usually you would just use the
role
property of a MenuItem
.
See the macOS Cocoa Event Handling Guide for more information on macOS' native actions.
Menu.buildFromTemplate(template)
template
MenuItemConstructorOptions[]
Returns Menu
Generally, the template
is an array of options
for constructing a
MenuItem. The usage can be referenced above.
You can also attach other fields to the element of the template
and they
will become properties of the constructed menu items.
Instance Methods
The menu
object has the following instance methods:
menu.popup(options)
options
Objectwindow
BrowserWindow (optional) - Default is the focused window.x
Number (optional) - Default is the current mouse cursor position. Must be declared ify
is declared.y
Number (optional) - Default is the current mouse cursor position. Must be declared ifx
is declared.positioningItem
Number (optional) macOS - The index of the menu item to be positioned under the mouse cursor at the specified coordinates. Default is -1.callback
Function (optional) - Called when menu is closed.
Pops up this menu as a context menu in the BrowserWindow
.
menu.closePopup([browserWindow])
browserWindow
BrowserWindow (optional) - Default is the focused window.
Closes the context menu in the browserWindow
.
menu.append(menuItem)
menuItem
MenuItem
Appends the menuItem
to the menu.
menu.getMenuItemById(id)
id
String
Returns MenuItem
the item with the specified id
menu.insert(pos, menuItem)
pos
IntegermenuItem
MenuItem
Inserts the menuItem
to the pos
position of the menu.
Instance Events
Objects created with new Menu
emit the following events:
Note: Some events are only available on specific operating systems and are labeled as such.
Event: 'menu-will-show'
Returns:
event
Event
Emitted when menu.popup()
is called.
Event: 'menu-will-close'
Returns:
event
Event
Emitted when a popup is closed either manually or with menu.closePopup()
.
Instance Properties
menu
objects also have the following properties:
menu.items
A MenuItem[]
array containing the menu's items.
Each Menu
consists of multiple MenuItem
s and each MenuItem
can have a submenu.
Instance Events
Objects created with new Menu
or returned by Menu.buildFromTemplate
emit
the following events:
Examples
The Menu
class is only available in the main process, but you can also use it
in the render process via the remote
module.
Main process
An example of creating the application menu in the main process with the simple template API:
const {app, Menu} = require('electron')
const template = [
{
label: 'Edit',
submenu: [
{role: 'undo'},
{role: 'redo'},
{type: 'separator'},
{role: 'cut'},
{role: 'copy'},
{role: 'paste'},
{role: 'pasteandmatchstyle'},
{role: 'delete'},
{role: 'selectall'}
]
},
{
label: 'View',
submenu: [
{role: 'reload'},
{role: 'forcereload'},
{role: 'toggledevtools'},
{type: 'separator'},
{role: 'resetzoom'},
{role: 'zoomin'},
{role: 'zoomout'},
{type: 'separator'},
{role: 'togglefullscreen'}
]
},
{
role: 'window',
submenu: [
{role: 'minimize'},
{role: 'close'}
]
},
{
role: 'help',
submenu: [
{
label: 'Learn More',
click () { require('electron').shell.openExternal('https://electronjs.org') }
}
]
}
]
if (process.platform === 'darwin') {
template.unshift({
label: app.getName(),
submenu: [
{role: 'about'},
{type: 'separator'},
{role: 'services', submenu: []},
{type: 'separator'},
{role: 'hide'},
{role: 'hideothers'},
{role: 'unhide'},
{type: 'separator'},
{role: 'quit'}
]
})
// Edit menu
template[1].submenu.push(
{type: 'separator'},
{
label: 'Speech',
submenu: [
{role: 'startspeaking'},
{role: 'stopspeaking'}
]
}
)
// Window menu
template[3].submenu = [
{role: 'close'},
{role: 'minimize'},
{role: 'zoom'},
{type: 'separator'},
{role: 'front'}
]
}
const menu = Menu.buildFromTemplate(template)
Menu.setApplicationMenu(menu)
Render process
Below is an example of creating a menu dynamically in a web page
(render process) by using the remote
module, and showing it when
the user right clicks the page:
<!-- index.html -->
<script>
const {remote} = require('electron')
const {Menu, MenuItem} = remote
const menu = new Menu()
menu.append(new MenuItem({label: 'MenuItem1', click() { console.log('item 1 clicked') }}))
menu.append(new MenuItem({type: 'separator'}))
menu.append(new MenuItem({label: 'MenuItem2', type: 'checkbox', checked: true}))
window.addEventListener('contextmenu', (e) => {
e.preventDefault()
menu.popup({window: remote.getCurrentWindow()})
}, false)
</script>
Notes on macOS Application Menu
macOS has a completely different style of application menu from Windows and Linux. Here are some notes on making your app's menu more native-like.
Standard Menus
On macOS there are many system-defined standard menus, like the Services
and
Windows
menus. To make your menu a standard menu, you should set your menu's
role
to one of the following and Electron will recognize them and make them
become standard menus:
window
help
services
Standard Menu Item Actions
macOS has provided standard actions for some menu items, like About xxx
,
Hide xxx
, and Hide Others
. To set the action of a menu item to a standard
action, you should set the role
attribute of the menu item.
Main Menu's Name
On macOS the label of the application menu's first item is always your app's
name, no matter what label you set. To change it, modify your app bundle's
Info.plist
file. See
About Information Property List Files
for more information.
Setting Menu for Specific Browser Window (Linux Windows)
The setMenu
method of browser windows can set the menu of certain
browser windows.
Menu Item Position
You can make use of before
, after
, beforeGroupContaining
, afterGroupContaining
and id
to control how the item will be placed when building a menu with Menu.buildFromTemplate
.
before
- 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
- 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. Also implies that the menu item in question should be placed in the same “group” as the item.beforeGroupContaining
- 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
- 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.
By default, items will be inserted in the order they exist in the template unless one of the specified positioning keywords is used.
Examples
Template:
[
{ id: '1', label: 'one' },
{ id: '2', label: 'two' },
{ id: '3', label: 'three' },
{ id: '4', label: 'four' }
]
Menu:
- 1
- 2
- 3
- 4
Template:
[
{ id: '1', label: 'one' },
{ type: 'separator' },
{ id: '3', label: 'three', beforeGroupContaining: ['1'] },
{ id: '4', label: 'four', afterGroupContaining: ['2'] },
{ type: 'separator' },
{ id: '2', label: 'two' }
]
Menu:
- 3
- 4
- ---
- 1
- ---
- 2
Template:
[
{ id: '1', label: 'one', after: ['3'] },
{ id: '2', label: 'two', before: ['1'] },
{ id: '3', label: 'three' }
]
Menu:
- ---
- 3
- 2
- 1