How to pass data from NSWindowController to its NSViewController?

Question

I have a IBOutlet of a NSToolBar button in my NSWindowController class, which is my main window class:

class MainWindo         


        

Answer 1

To access NSViewController from NSWindowController:

let viewController:MainViewController = self.window!.contentViewController as! MainViewController

To access NSWindowController from NSViewController:

let windowController:MainWindowController = self.view.window?.windowController as! MainWindowController