getLastSelected method

@override DropdownItem<T>? getLastSelected()

The last selected item, for SingleSelectionDropdownController, it would be the current selected item; for MultiSelectionDropdownController, it would be the last selected item.

Implementation

@override
DropdownItem<T>? getLastSelected() => _selectedItems.isNotEmpty
    ? DropdownItem(value: _selectedItems.last, selected: true)
    : null;