onKey property
inherited
Called if this focus node receives a key event while focused (i.e. when hasFocus returns true).
Key Event Propagation
The FocusManager
receives all key events and will pass them to the focused
nodes. It starts with the node with the primary focus, and will call the
onKey callback for that node. If the callback returns false, indicating
that it did not handle the event, the FocusManager
will move to the parent
of that node and call its onKey. If that onKey returns true, then it
will stop propagating the event. If it reaches the root FocusScopeNode
,
FocusManager.rootScope
, the event is discarded.
Implementation
FocusOnKeyCallback get onKey => _onKey;