How do I disable the Show Tab Bar menu option in Sierra apps?

Question

I've got an app that uses a Toolbar in a NSWindow. I don't want users to be able to customize this toolbar for aesthetic reasons. In Sierra there's a new Menu option that gets inserted into "Menu > View" called Show Tab Bar. How do I disable this? Enabling it only seems to increase the tool bar's height as I don't have extra labels showing under the icons.

score 33 · Answer 1 · answered Sep 30 '16 at 08:17

33

You can also do this on IB, on the Window’s attributes inspector

answered Sep 30 '16 at 08:17

leonaka

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Thanks a lot. This helped me. – Tommy Jul 09 '17 at 05:18
where exactly this screen is located at? – Haardik Dharma May 01 '21 at 11:18
You can also do it programmatically using the following code ```window.tabbingMode = NSWindowTabbingModeDisallowed``` – Elviss Strazdins Apr 12 '22 at 14:08

score 17 · Accepted Answer · edited Jul 06 '21 at 13:05

17

On 10.12, you need to now set the following when the window is created as Tab Bar is now available by default:

[NSWindow setAllowsAutomaticWindowTabbing: NO];

The answer is the same in Swift and SwiftUI

func applicationWillFinishLaunching(_ notification: Notification) {
    NSWindow.allowsAutomaticWindowTabbing = false
}

Note that the call is made on the class NSWindow not on an instance of NSWindow

edited Jul 06 '21 at 13:05

JuJoDi

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answered Sep 11 '16 at 17:14

strangetimes

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4

On 10.15 this method no longer seems to exist. Instead you can set the `tabbingMode` of the window to `.disallowed`. Specifically adding `window.tabbingMode = .disallowed` to the `applicationDidFinishLaunching` method of the `NSApplicationDelegate` seems to work. – Steven W. Klassen Feb 14 '20 at 15:24
The above comment is not true, it seems like they may have been trying to call `allowsAutomaticWindowTabbing` on an instance of a window rather than on NSWindow the class. In swift and swiftui you can still call `NSWindow.allowsAutomaticWindowTabbing = false` to remove these items entirely in all app windows rather than disabling them for individual windows. – JuJoDi Jan 08 '21 at 19:11

score 5 · Answer 3 · answered Nov 27 '16 at 07:35

5

To disable tabbing on individual windows call setTabbingMode:

if([window respondsToSelector:@selector(setTabbingMode:)]) {
    // this particular window doesn't support tabbing in Sierra.
    [window setTabbingMode:NSWindowTabbingModeDisallowed];
}

answered Nov 27 '16 at 07:35

adib

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score 4 · Answer 4 · answered Sep 21 '16 at 08:09

4

If you don't want to compile against the latest frameworks, you can use the following code in your NSWindowsController sub classes:

Swift:

 override func awakeFromNib() {
     if NSAppKitVersionNumber > 1500 {
        self.window?.setValue(2, forKey: "tabbingMode")
     }
 }

Objective-C:

- (void)awakeFromNib {
    if (NSAppKitVersionNumber > 1500) {
        [self.window setValue:[NSNumber numberWithInt:2] forKey:@"tabbingMode"];
    }
}

answered Sep 21 '16 at 08:09

Ely

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It's `NSAppKitVersion.current.rawValue > NSAppKitVersion.macOS10_12.rawValue` with Swift 4 – ctietze Mar 17 '18 at 08:20
@ctietze: my answer os only relevant when using older versions of Xcode and Swift – Ely Mar 17 '18 at 14:14

score 4 · Answer 5 · answered Dec 22 '16 at 14:13

4

Swift solution:

override func awakeFromNib() {
    super.awakeFromNib()
    if #available(OSX 10.12, *) {
        tabbingMode = .disallowed
    }
}

answered Dec 22 '16 at 14:13

Matej Ukmar

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Or, if you have an app delegate, add the line `window.tabbingMode = .disallowed` after the NSWindow has been created. – Steven W. Klassen Feb 14 '20 at 15:25

score 4 · Answer 6 · answered Apr 07 '20 at 18:41

4

Swift 5

In your NSWindowController:

self.window?.tabbingMode = .disallowed

answered Apr 07 '20 at 18:41

ixany

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How do I disable the Show Tab Bar menu option in Sierra apps?

6 Answers6

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