Cocoa move to parent from a subclassed instance

Question

I have a subclassed NSTextField to limit the maximum length (only 1 character). Now, once the user finishes entering this one character I would like to move the focus to the next NSSTextView. This is where I need some help. How can I tell the application "move the focus to the next field"? I suppose I need to call the parent view from the subclassed NSTextField, something like:

[[self parent] nextKeyView];

But how do I do this?

Answer 1

How about [[self window] makeFirstResponder:[self nextKeyView]]?

Answer 2

You don't need to subclass NSTextField for this, just implement the text delegate method -textDidChange: