onFocusChanged method

void onFocusChanged(
  1. bool focused
)

Called when the search text field gains or loses keyboard focus.

Notifies listeners so the parent state can schedule a rebuild.

Implementation

void onFocusChanged(bool focused) {
  if (_searchFocused == focused) return; // idempotent
  _searchFocused = focused;
  notifyListeners();
}