菜单项
添加菜单项到应用程序菜单和上下文菜单中
进程:主进程
有关示例, 请参见 Menu
。
new MenuItem(可选)
参数
Objectclick
Function (可选) - 当菜单项被点击后,将会调用click(menuItem, browserWindow, event)
。menuItem
菜单项browserWindow
BrowserWindowevent
KeyboardEvent
role
String (可选)- 可为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
,recentDocuments
,toggleTabBar
,selectNextTab
,selectPreviousTab
,mergeAllWindows
,clearRecentDocuments
,moveTabToNewWindow
,windowMenu
- 指定菜单项的行为,定义click
属性后此属性将被忽略。 参见 rolestype
String (可选)-可以是normal
、separator
、submenu
、checkbox
或radio
。label
String (可选)sublabel
String (可选)toolTip
String (optional) macOS - Hover text for this menu item.accelerator
Accelerator (可选)icon
(NativeImage | String) (可选)enabled
Boolean (可选) - 如果为 false,该菜单项将会置灰且不可点击。acceleratorWorksWhenHidden
Boolean (optional) macOS - default istrue
, and whenfalse
will prevent the accelerator from triggering the item if the item is not visible`.visible
Boolean (可选)-如果为 false, 该菜单项将完全隐藏。checked
Boolean (可选)-只应为checkbox
或radio
类型菜单项指定。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) (optional) - Should be specified forsubmenu
type menu items. Ifsubmenu
is specified, thetype: 'submenu'
can be omitted. 如果该值不属于Menu
,它将被函数Menu.buildFromTemplate
自动转换。id
String (可选)-在单个菜单中是唯一的。如果定义, 则可以通过它来引用该项。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.
注意: acceleratorWorksWhenHidden
只在MacOS中生效,因为在Windows和Linux中快捷键不会随着隐藏菜单项而失效。 该选项让用户可以选择关闭,因为这是本地 macOS 开发中的可能。 此属性只能在macOS High Sierra 10.13或以上中使用。
角色
可以通过角色来为menu添加预定义行为。
最好给任何一个菜单指定 role
去匹配一个标准角色, 而不是尝试在 click
函数中手动实现该行为。 内置的 role
行为将提供最佳的原生体验。
使用 role
时, label
和 accelerator
值是可选的, 并为每个平台,将默认为适当值。
Every menu item must have either a role
, label
, or in the case of a separator a type
.
role
属性可以具有以下值:
撤消
重做
cut
copy
paste
pasteAndMatchStyle
selectAll
delete
minimize
- 最小化当前窗口。close
- 关闭当前窗口.quit
- 退出程序reload
- 重新加载当前窗口。forcereload
- 忽略缓存,重新加载当前窗口。toggledevtools
- 在当前窗口中隐藏/显示开发者工具。togglefullscreen
- 将当前窗口切换至全屏模式。resetzoom
- 将主页的缩放级别重置为初始大小.zoomin
- 主页面放大 10%.zoomout
-主页面缩小 10%.fileMenu
- Whole default “File” menu (Close / Quit)editMenu
-默认的 “编辑” 菜单 (包括撤消、复制等)viewMenu
- Whole default “View” menu (Reload, Toggle Developer Tools, etc.)windowMenu
- Whole default “Window” menu (Minimize, Zoom, etc.).
以下为macOS 中提供的角色:
appMenu
- Whole default “App” menu (About, Services, etc.)about
-映射到orderFrontStandardAboutPanel
操作.hide
-映射到hide
操作.hideOthers
-映射到hideOtherApplications
操作.unhide
-映射到unhideAllApplications
操作.startSpeaking
-映射到startSpeaking
操作.stopSpeaking
-映射到stopSpeaking
操作.front
-映射到arrangeInFront
操作.zoom
-映射到performZoom
操作.toggleTabBar
-映射到toggleTabBar
操作.selectNextTab
- 映射到selectNextTab
操作.selectPreviousTab
- 映射到selectPreviousTab
操作.mergeAllWindows
- 映射到mergeAllWindows
操作.moveTabToNewWindow
- 映射到moveTabToNewWindow
操作.window
- 这个子菜单是”Window” 菜单.help
-这个子菜单是 “Help” 菜单.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
-这个子菜单是 “Open Recent” 菜单.clearRecentDocuments
-映射到clearRecentDocuments
操作.
在 macOS 上指定 role
时, label
和 accelerator
是影响菜单项的唯一选项。 所有其它选项都将被忽略。 不过,仍然支持小写的role
,如toggledevtools
。
Nota Bene: The enabled
and visibility
properties are not available for top-level menu items in the tray on MacOS.
实例属性
以下为 MenuItem
实例的可用属性:
menuItem.id
String
指定了该选项唯一的id,此属性可被动态更改。
menuItem.label
A String
indicating the item’s visible label, this property can be dynamically changed.
menuItem.click
当菜单项被单击时所调用的函数,It can be called with menuItem.click(event, focusedWindow, focusedWebContents)
.
event
KeyboardEventfocusedWindow
BrowserWindowfocusedWebContents
WebContents
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
String
(可选) 指出菜单项的角色 可为 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
, recentDocuments
, toggleTabBar
, selectNextTab
, selectPreviousTab
, mergeAllWindows
, clearRecentDocuments
, moveTabToNewWindow
, 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, this property can be dynamically changed.
menuItem.toolTip
macOS
A String
indicating the item’s hover text.
menuItem.enabled
一个 Boolean
类型的值, 指示是否启用该项, 该属性可以动态改变
menuItem.visible
一个 Boolean
类型的值, 指示该项是否可见, 该属性可以动态改变。
menuItem.checked
一个 Boolean
类型的值, 指示是否选中该项, 该属性可以动态改变。
checkbox
菜单项将在选中时切换 checked
的开关属性。
单选菜单项
将返回单击时checked
属性, 并将关闭同一菜单中所有相邻项的属性。
你可以为其他行为添加click
函数。
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.