SpatialNavigation keeps track of all navigation groups, and updates the active navigation group when visibility
changes on group container.
It listens to key events, and triggers either handleNavigation or handleAction on the active group.
SeekBarHandler will get instantiated with root navigation group and disposed on release of the spatial navigation.
SpatialNavigation keeps track of all navigation groups, and updates the active navigation group when visibility changes on group container.
It listens to key events, and triggers either handleNavigation or handleAction on the active group. SeekBarHandler will get instantiated with root navigation group and disposed on release of the spatial navigation.