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

问题

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.

回答1:

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

回答2:

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];

回答3:

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"];
    }
}

回答4:

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];
}

回答5:

Swift solution:

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

来源：https://stackoverflow.com/questions/39399553/how-do-i-disable-the-show-tab-bar-menu-option-in-sierra-apps