I have a NSTextField within a Window and I created a very simple MacRuby delegate:

class ServerInputDelegate
    attr_accessor :parent

    def textDidChange(notification)
        NSLog notification.inspect
        parent.filter
    end
end

And I have tried setting the control's delegate:

I have tried setting the Window and every other object I could think of to this delegate. I have also tried setting it to other delegates (application for instance) and events like applicationDidFinishLaunching are being properly triggered.

Is there any trick I am missing in order for this event to be triggered every time the contents of this NSTextField changes?