Menu
Class: Menu
Cria menus de aplicativo e menus de contexto nativos.
Process: Main
[!TIP] See also: A detailed guide about how to implement menus in your application.
[!WARNING] Electron's built-in classes cannot be subclassed in user code. For more information, see the FAQ.
new Menu()
Cria um novo menu.
Métodos estáticos
A classe Menu
tem os seguintes métodos estáticos:
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.
Also on Windows and Linux, you can use a &
in the top-level item name to indicate which letter should get a generated accelerator. For example, using &File
for the file menu would result in a generated Alt-F
accelerator that opens the associated menu. The indicated character in the button label then gets an underline, and the &
character is not displayed on the button label.
In order to escape the &
character in an item name, add a proceeding &
. For example, &&File
would result in &File
displayed on the button label.
Passing null
will suppress the default menu. On Windows and Linux, this has the additional effect of removing the menu bar from the window.
[!NOTE] The default menu will be created automatically if the app does not set one. It contains standard items such as
File
,Edit
,View
,Window
andHelp
.
Menu.getApplicationMenu()
Retorna Menu | null
- O menu do aplicativo, se definido, ou null
, se não fora definido.
[!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)
no macOS
action
string
Sends the action
to the first responder of application. This is used for emulating default macOS menu behaviors. Usually you would 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 | MenuItem)[]
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.
Métodos de Instância
O objeto menu
possui os seguintes métodos de instância:
menu.popup([options])
- Objeto
options
(opcional)window
BaseWindow (optional) - Default is the focused window.frame
WebFrameMain (optional) - Provide the relevant frame if you want certain OS-level features such as Writing Tools on macOS to function correctly. Typically, this should beparams.frame
from thecontext-menu
event on a WebContents, or thefocusedFrame
property of a WebContents.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.sourceType
string (optional) Windows Linux - This should map to themenuSourceType
provided by thecontext-menu
event. It is not recommended to set this value manually, only provide values you receive from other APIs or leave itundefined
. Can benone
,mouse
,keyboard
,touch
,touchMenu
,longPress
,longTap
,touchHandle
,stylus
,adjustSelection
, oradjustSelectionReset
.callback
Function (optional) - Called when menu is closed.
Pops up this menu as a context menu in the BaseWindow
.
[!TIP] For more details, see the Context Menu guide.
menu.closePopup([window])
window
BaseWindow (optional) - Default is the focused window.
Closes the context menu in the window
.
menu.append(menuItem)
menuItem
MenuItem
Acrescenta o menuItem
ao menu.
menu.getMenuItemById(id)
id
string
Returns MenuItem | null
the item with the specified id
menu.Insert(pos, menuItem)
pos
IntegermenuItem
MenuItem
Insere o menuItem
na posição pos
do menu.
Eventos de instância
Objects created with new Menu
or returned by Menu.buildFromTemplate
emit the following events:
[!NOTE] Some events are only available on specific operating systems and are labeled as such.
Event: 'menu-will-show'
Retorna:
event
Event
Emitted when menu.popup()
is called.
Event: 'menu-will-close'
Retorna:
event
Event
Emitted when a popup is closed either manually or with menu.closePopup()
.
Propriedades da Instância
Objetos menu
também possuem as seguintes propriedades:
menu.items
Um array MenuItem[]
contendo os itens do menu.
Each Menu
consists of multiple MenuItem
instances and each MenuItem
can nest a Menu
into its submenu
property.