focusable

Lets this node receive focus.

Key and paste events go to the focused node and its ancestors first: onPreviewKeyEvent from the root down to it, then onKeyEvent from it up to the root. Only when none of them handle an event is it offered to the rest of the nodes.

Tab and Shift+Tab move the focus to the next and previous focusable node in the order they are composed, unless a node handles them. When nothing is focused, the first focusable node gets the focus, unless it was cleared with FocusManager.clearFocus.