NSTextView won't become first responder
===

Here's the layout of my little test app:

1. `AppDelegate` owns `WindowController`.
2. `WindowController` owns `CustomTextContainerView`.
3. `CustomTextContainerView` owns an `NSScrollView` which embeds `MyCustomTextView` (an `NSTextView` subclass).

The xibs for both the standard `MainMenu` and my window controller are relatively empty. My window controller's `-windowDidLoad` looks like this:

    - (void)windowDidLoad {
        [super windowDidLoad];
        // create CustomTextContainerView
        [[self window] setContentView:self.customTextContainerView];
    }

What I'm trying to do is **set first responder** to the textView, but I've tried everything I can think of to get this to work.

I've made it so `CustomTextContainerView` just forwards `-becomeFirstResponder` on to its textView. I've tried calling it directly on both the container and the textView but I can't get it to become first responder automatically.

**Note:** The user can still click in the text area and start typing, but what I'm trying to do is set first responder status automatically so I don't have to click before I start typing. What am I missing?