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(options)
选项
对象click
函数(可选) - 单击菜单项时,将用click(menuItem, browserWindow, event)
调用。menuItem
MenuItembrowserWindow
BrowserWindow |未定义 - 如果没有打开窗口,则无法定义此定义。event
KeyboardEvent
role
String (optional) - Can beundo
,redo
,cut
,copy
,paste
,pasteAndMatchStyle
,delete
,selectAll
,reload
,forceReload
,toggleDevTools
,resetZoom
,zoomIn
,zoomOut
,toggleSpellChecker
,togglefullscreen
,window
,minimize
,close
,help
,about
,services
,hide
,hideOthers
,unhide
,quit
,startSpeaking
,stopSpeaking
,zoom
,front
,appMenu
,fileMenu
,editMenu
,viewMenu
,shareMenu
,recentDocuments
,toggleTabBar
,selectNextTab
,selectPreviousTab
,mergeAllWindows
,clearRecentDocuments
,moveTabToNewWindow
orwindowMenu
- Define the action of the menu item, when specified theclick
property will be ignored. 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.sharingItem
SharingItem (optional) macOS - The item to share when therole
isshareMenu
.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 (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 - Inserts this item before the item with the specified label. 如果引用值不存在,那么该菜单项会插在这个菜单的尾部。 这还意味着,菜单项应该被放置在与引用项相同的组中。after
String - 在指定的标签之后插入菜单项。 如果引用值不存在,那么该菜单项会插在这个菜单的尾部。beforeGroupContaining
String - 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 - 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. 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:
undo - 撤销。
about
- Trigger a native about panel (custom message box on Window, which does not provide its own).redo
cut - 剪切。
copy - 复制。
paste - 粘贴。
pasteAndMatchStyle
selectAll - 全选。
delete -删除
minimize
- 最小化当前窗口。close
- Close current window.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%.toggleSpellChecker
- 启用/禁用内置拼写检查器。fileMenu
- 默认的“文件”菜单(关闭/退出)editMenu
-默认的 “编辑” 菜单 (包括撤消、复制等)viewMenu
- 默认的“视图”菜单(包括重新加载、开发者工具等)windowMenu
- 默认的“窗口”菜单(包括最小化、缩放等)
The following additional roles are available on macOS:
appMenu
- Whole default “App” menu (About, Services, etc.)hide
-映射到hide
操作.hideOthers
-映射到hideOtherApplications
操作.unhide
- Map to theunhideAllApplications
action.startSpeaking
-映射到startSpeaking
操作.stopSpeaking
-映射到stopSpeaking
操作.front
- Map to thearrangeInFront
action.zoom
- Map to theperformZoom
action.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.shareMenu
- The submenu is share menu. ThesharingItem
property must also be set to indicate the item to share.
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.
menuItem.click
A Function
that is fired when the MenuItem receives a click event. 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
String
表示菜单项的类型 Can be normal
, separator
, submenu
, checkbox
or radio
.
menuItem.role
String
(可选) 指出菜单项的角色 Can be undo
, redo
, cut
, copy
, paste
, pasteAndMatchStyle
, delete
, selectAll
, reload
, forceReload
, toggleDevTools
, resetZoom
, zoomIn
, zoomOut
, toggleSpellChecker
, togglefullscreen
, window
, minimize
, close
, help
, about
, services
, hide
, hideOthers
, unhide
, quit
, startSpeaking
, stopSpeaking
, zoom
, front
, appMenu
, fileMenu
, editMenu
, viewMenu
, shareMenu
, recentDocuments
, toggleTabBar
, selectNextTab
, selectPreviousTab
, mergeAllWindows
, clearRecentDocuments
, moveTabToNewWindow
or 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.
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.sharingItem
macOS
A SharingItem
indicating the item to share when the role
is shareMenu
.
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.