我如何在Cocoa中获取应用程序菜单

Question

如何获取应用程序菜单的NSMenu或NSMenuItem(苹果菜单旁边菜单栏中的菜单).它似乎是自动创建的,并且独立于我通过NSApplication setMainMenu设置的NSMenu.

顺便说一下:我正在构建没有Xcode的完整应用程序,所以请不要使用InterfaceBuilder提示.

PS:MacOSX 10.5

Answer 1

如果没有IB,您可以使用NSApplication的mainMenu访问菜单:

NSMenu *mainMenu = [[NSApplication sharedApplication] mainMenu];
NSMenu *appMenu = [[mainMenu itemAtIndex:0] submenu];

for (NSMenuItem *item in [appMenu itemArray]) {
    NSLog(@"%@", [item title]);
}

Answer 2

虽然这是5年的问题...我想分享如何制作它.

根据我使用Xcode 7.1的OS X 10.11(El Capitan)的经验,复制该应用程序菜单并不困难.Apple似乎删除了所有奇怪的限制.

注意:此代码针对Swift 3进行了更新,仅在macOS Sierra(10.12.1)中进行了测试.

//
//  AppDelegate.swift
//  Editor6MainMenuUI2Testdrive
//
//  Created by Hoon H. on 2016/11/05.
//  Copyright © 2016 Eonil. All rights reserved.
//

import Cocoa

/// You SHOULD NOT use `@NSApplicationMain` 
/// to make your custom menu to work.
class AppDelegate: NSObject, NSApplicationDelegate {
    func applicationDidFinishLaunching(_ aNotification: Notification) {}
    func applicationWillTerminate(_ aNotification: Notification) {}
}

func makeMainMenu() -> NSMenu {
    let mainMenu            = NSMenu() // `title` really doesn't matter.
    let mainAppMenuItem     = NSMenuItem(title: "Application", action: nil, keyEquivalent: "") // `title` really doesn't matter.
    let mainFileMenuItem    = NSMenuItem(title: "File", action: nil, keyEquivalent: "")
    mainMenu.addItem(mainAppMenuItem)
    mainMenu.addItem(mainFileMenuItem)

    let appMenu             = NSMenu() // `title` really doesn't matter.
    mainAppMenuItem.submenu = appMenu

    let appServicesMenu     = NSMenu()
    NSApp.servicesMenu      = appServicesMenu

    appMenu.addItem(withTitle: "About Me", action: nil, keyEquivalent: "")
    appMenu.addItem(NSMenuItem.separator())
    appMenu.addItem(withTitle: "Preferences...", action: nil, keyEquivalent: ",")
    appMenu.addItem(NSMenuItem.separator())
    appMenu.addItem(withTitle: "Hide Me", action: #selector(NSApplication.hide(_:)), keyEquivalent: "h")
    appMenu.addItem({ () -> NSMenuItem in
        let m = NSMenuItem(title: "Hide Others", action: #selector(NSApplication.hideOtherApplications(_:)), keyEquivalent: "h")
        m.keyEquivalentModifierMask = [.command, .option]
        return m
        }())
    appMenu.addItem(withTitle: "Show All", action: #selector(NSApplication.unhideAllApplications(_:)), keyEquivalent: "")

    appMenu.addItem(NSMenuItem.separator())
    appMenu.addItem(withTitle: "Services", action: nil, keyEquivalent: "").submenu = appServicesMenu
    appMenu.addItem(NSMenuItem.separator())
    appMenu.addItem(withTitle: "Quit Me", action: #selector(NSApplication.terminate(_:)), keyEquivalent: "q")

    let fileMenu = NSMenu(title: "File")
    mainFileMenuItem.submenu = fileMenu
    fileMenu.addItem(withTitle: "New...", action: #selector(NSDocumentController.newDocument(_:)), keyEquivalent: "n")

    return mainMenu
}

let del = AppDelegate()
/// Setting main menu MUST be done before you setting app delegate.
/// I don't know why.
NSApplication.shared().mainMenu = makeMainMenu()
NSApplication.shared().delegate = del
NSApplication.shared().run()

无论如何,它不会自动生成,我必须自己设置它们.我不确定是否还有其他方法可以做到这一点.

你可以在这里下载工作示例.

Answer 3

我为 Swift 5.0 付出两分钱

private final func manageMenus(){
    let  mainMenu =  NSApplication.shared.mainMenu

    if let editMenu = mainMenu?.item(at: 1)?.submenu{
        for item in editMenu.items{
            print(item.title)
        }
    }
}

所以你也可以启用它：

....

  for item in editMenu.items{
       item.isEnabled = true
   }