Module manager 

Focus manager coordinating focus traversal, history, and traps.

The manager tracks the current focus, maintains a navigation history, and enforces focus traps for modal dialogs. It also provides a configurable FocusIndicator for styling the focused widget.

Structs

FocusGroup

Group of focusable widgets for tab traversal.

FocusManager

Central focus coordinator.

FocusTrap

Active focus trap (e.g., modal).

Enums

FocusEvent

Focus change events emitted by the manager.