Mosaic activity, implement keyboard control support.
Closed, ResolvedPublic

Description

In the mosaic activity, we can add keyboard navigations to even play it as keyboard-only.

The following bindings are planned to be implemented:

  1. TAB to switch between selector area and answer area.
  2. Arrow keys to move to different cells in the current area.
  3. Space/Enter/Return to select a cell.