How to disable NSDocument's window title popup

问题

I have an NSDocument based app with autosave enabled.

I'd like to prevent this popup from showing:

I have tried returning nil from NSWindow's –title, –representedFilename and –representedURL which hide the title effectively hide the title but have no effect on the downward facing disclosure indicator and the popup.

Is there a way I can prevent this popup from being presented?

回答1:

I was able to prevent the button from being shown by overriding NSWindow's

+ (NSButton *)standardWindowButton:(NSWindowButton)windowButtonKind forStyleMask:(NSUInteger)windowStyle

and returning nil for NSWindowDocumentVersionsButton

回答2:

Return false from NSDocument's autosavesInPlace() override

回答3:

You can also use a streamlined toolbar (wwdc2016)

  override func viewWillAppear() {
        super.viewWillAppear()

        self.view.window!.titleVisibility = .hidden  
  }

This removes also the title bar (but not the ones of tabbed windows)

来源：https://stackoverflow.com/questions/23494436/how-to-disable-nsdocuments-window-title-popup