NSWindowController should have access to root view controller

Originator:juri.pakaste
Number:rdar://19364121 Date Originated:01-Jan-2015 02:12 PM
Status:Open Resolved:
Product:OS X SDK Product Version:10.10
Classification:Enhancement Reproducible:Always
 
Summary:
There is no way to access the NSViewController responsible for the root view of a window from the window’s NSWindowController.

Steps to Reproduce:
1. Open the API docs
2. Discover there is no way to access the view controller

Expected Results:
I expected to find a method analogous to rootViewController on UIWindow in UIKit.

Actual Results:
No way to do it.

Notes:
This can be worked around by calling self.view.window!.windowController()! in the NSViewController’s viewWillAppear (can’t use viewDidLoad, see rdar://18565021) and setting a property on the window controller. But this is a deeply unsatisfying hack and we shouldn’t have to bend over backwards to do this.

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