9.2 KiB
Menu
Create native application menus and context menus.
Each Menu
consists of multiple MenuItem
s and each MenuItem
can have a submenu.
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: [
{
label: 'Reload',
accelerator: 'CmdOrCtrl+R',
click (item, focusedWindow) {
if (focusedWindow) focusedWindow.reload()
}
},
{
label: 'Toggle Developer Tools',
accelerator: process.platform === 'darwin' ? 'Alt+Command+I' : 'Ctrl+Shift+I',
click (item, focusedWindow) {
if (focusedWindow) focusedWindow.webContents.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('http://electron.atom.io') }
}
]
}
]
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 = [
{
label: 'Close',
accelerator: 'CmdOrCtrl+W',
role: 'close'
},
{
label: 'Minimize',
accelerator: 'CmdOrCtrl+M',
role: 'minimize'
},
{
label: 'Zoom',
role: 'zoom'
},
{
type: 'separator'
},
{
label: 'Bring All to Front',
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(remote.getCurrentWindow())
}, false)
</script>
Class: Menu
new Menu()
Creates a new menu.
Static Methods
The menu
class has the following static methods:
Menu.setApplicationMenu(menu)
menu
Menu
Sets menu
as the application menu on macOS. On Windows and Linux, the menu
will be set as each window's top menu.
Note: This API has to be called after the ready
event of app
module.
Menu.getApplicationMenu()
Returns the application menu (an instance of Menu
), if set, or null
, if not set.
Menu.sendActionToFirstResponder(action)
macOS
action
String
Sends the action
to the first responder of application. This is used for
emulating default Cocoa menu behaviors, usually you would just use the
role
property of MenuItem
.
See the macOS Cocoa Event Handling Guide for more information on macOS' native actions.
Menu.buildFromTemplate(template)
template
MenuItem[]
Generally, the template
is just 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([browserWindow, x, y, positioningItem])
browserWindow
BrowserWindow (optional) - Default isBrowserWindow.getFocusedWindow()
.x
Number (optional) - Default is the current mouse cursor position.y
Number (required ifx
is used) - Default is the current mouse cursor position.positioningItem
Number (optional) macOS - The index of the menu item to be positioned under the mouse cursor at the specified coordinates. Default is -1.
Pops up this menu as a context menu in the browserWindow
.
menu.append(menuItem)
menuItem
MenuItem
Appends the menuItem
to the menu.
menu.insert(pos, menuItem)
pos
IntegermenuItem
MenuItem
Inserts the menuItem
to the pos
position of the menu.
Instance Properties
menu
objects also have the following properties:
menu.items
A MenuItem[] array containing the menu's items.
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 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 position
and id
to control how the item will be placed
when building a menu with Menu.buildFromTemplate
.
The position
attribute of MenuItem
has the form [placement]=[id]
, where
placement
is one of before
, after
, or endof
and id
is the unique ID of
an existing item in the menu:
before
- Inserts this item before the id referenced item. If the referenced item doesn't exist the item will be inserted at the end of the menu.after
- Inserts this item after id referenced item. If the referenced item doesn't exist the item will be inserted at the end of the menu.endof
- Inserts this item at the end of the logical group containing the id referenced item (groups are created by separator items). If the referenced item doesn't exist, a new separator group is created with the given id and this item is inserted after that separator.
When an item is positioned, all un-positioned items are inserted after it until a new item is positioned. So if you want to position a group of menu items in the same location you only need to specify a position for the first item.
Examples
Template:
[
{label: '4', id: '4'},
{label: '5', id: '5'},
{label: '1', id: '1', position: 'before=4'},
{label: '2', id: '2'},
{label: '3', id: '3'}
]
Menu:
- 1
- 2
- 3
- 4
- 5
Template:
[
{label: 'a', position: 'endof=letters'},
{label: '1', position: 'endof=numbers'},
{label: 'b', position: 'endof=letters'},
{label: '2', position: 'endof=numbers'},
{label: 'c', position: 'endof=letters'},
{label: '3', position: 'endof=numbers'}
]
Menu:
- ---
- a
- b
- c
- ---
- 1
- 2
- 3