[Events] changeType and focusType are unsigned shorts and not nullable

changeType and focusType are unsigned shorts and not nullable. Added UNKNOWN = 0 constants to account for the change. Removed previous option for separate LinearFocusType and DirectionalFocusType dictionaries; these constants (NAV_NEXT, NAV_UP, etc.) are now defined in the constructor.

Changeset
https://dvcs.w3.org/hg/IndieUI/rev/8e07cfc0a4dd

Received on Wednesday, 5 June 2013 18:02:57 UTC