showSelectedItemOnList static method
Map<String, dynamic>
showSelectedItemOnList(
- dynamic oldSelected,
- dynamic selectedItem,
- List<Object?> items
)
Implementation
static Map<String, dynamic> showSelectedItemOnList(
dynamic oldSelected, dynamic selectedItem, List<Object?> items) {
if (oldSelected != selectedItem) {
final Map<String, Object?> res = <String, Object?>{
'oldSelected': oldSelected,
'selectedItem': selectedItem,
'items': items,
};
if (oldSelected == null) {
items.removeWhere((dynamic element) => element == selectedItem);
return res;
}
bool isOldSelectedAlready = false;
items.forEach((dynamic element) {
if (element == oldSelected) {
isOldSelectedAlready = true;
}
});
items.removeWhere((Object? element) => element == selectedItem);
if (!isOldSelectedAlready) {
items.add(oldSelected);
}
return res;
}
return <String, Object>{};
}