+
+ // See if we can find a “next” bus to move the focus to.
+ const int next_bus_idx = focus.bus_idx + (focus.bus_idx - source_bus_idx); // Note: Could become e.g. -1.
+ for (const InstantiatedSpinner &is : controller_spinners) {
+ if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
+ is.spinner->setFocus();
+ }
+ }
+ for (const InstantiatedSpinner &is : button_spinners) {
+ if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
+ is.spinner->setFocus();
+ }
+ }