How can i Popup a NSMenu in a custom views in NSMenuItems? - swift

Question

I have a NSMenu with a custom views, just like this.
ViewController.swift
class ViewController: NSViewController {
#IBOutlet var theMenu: NSMenu!
#IBOutlet var theMenuItem: NSMenuItem!
#IBOutlet var customView: NSView!
override func viewDidLoad() {
theMenuItem.view = customView
}
#IBAction func showTheMenuWithCustomView(_ sender: NSButton) {
// Popup the menu below button
let position = NSPoint(x: 0, y: sender.frame.height+2)
theMenu.popUp(positioning: nil, at: position, in: sender)
}
}
This works well.
But in custom views, i need to popup an another menu. After i call the popUp method, it just show nothing. Here is the code:
CustomView.swift
class CustomView: NSView {
#IBAction func showCustomViewMenu(_ sender: NSButton) {
// Create the menu in custom view
let customViewMenu = NSMenu()
// Add a menu item in it
customViewMenu.addItem(withTitle: "no one care", action: nil, keyEquivalent: "")
// Popup the menu below button
let position = NSPoint(x: 0, y: sender.frame.height+2)
customViewMenu.popUp(positioning: nil, at: position, in: sender)
}
}
You can clone this project to test it:
https://github.com/Caldis/NSMenuQuestion
How can i Popup NSMenu in custom views in NSMenuItems ?

Answer 1

Use this line to show the additional popup on CustomView:
NSMenu.popUpContextMenu(customViewMenu, with: NSApp.currentEvent!, for: sender)
Additionally, if you also need to disable other popups on whole CustomView, override rightMouseDown in CustomView, like so:
class CustomView: NSView {
override func rightMouseDown(with event: NSEvent) {
// Do nothing
}
}