How to add NSViewController to a responder chain?

Question

I\'m having hard time understanding and finding info about how to make NSViewController accept key and mouse events. I read somewhere that in order to register these events

Answer 1

Or if, as is the case most of the time, your controller's view is simply a generic container, insert your controller in the responder chain between its view and its subviews. This can be done with these lines of code in your controller's awakeFromNib:

Obj-C:

[self setNextResponder:self.view];

for (NSView *subview in self.view.subviews) {
    [subview setNextResponder:self]; 
}

Swift:

override func awakeFromNib() {
    super.awakeFromNib()
    self.nextResponder = self.view
    for subview in self.view.subviews {
        subview.nextResponder = self
    }
}

No subclassing needed.