macOS Swift: Always show window tabbar programmatically

Question

Can anybody tell me how I can get my NSWindow to show the TabBar (incl. the "+"-Button), even if I have only one tab?

I know there is a Menu Option called "Show Tab Bar" that will lead to the tab bar showing even if you have only one tab. How can I get this functionality programmatically?

See this example of a window showing the tab bar with only one tab open

optimally, i want the whole tab bar... jsut as if i had two tabs or more, but i also want the tabbar for one tab — Tterhuelle, Feb 19 '18 at 09:01

score 0 · Answer 1 · answered Apr 01 '23 at 05:11

I guess the answer is a bit late :) but still might help somebody.

Here is a solution for SwiftUI application:

To get the right instance of NSWindow you can check one of these answers:

So in the end you will end up with something like this:

var window: NSWindow?

Add .onAppear modifier with the following code to your high level view in the app:

.onAppear {
    guard let window = window else { return }
    guard let tabGroup = window.tabGroup else { return }
    guard !tabGroup.isTabBarVisible else { return }
    window.toggleTabBar(.none)
}

It will trigger the same action as Show Tab Bar from Menu -> View

macOS Swift: Always show window tabbar programmatically

1 Answers1