buildItem method
Implementation
@override
Widget buildItem(BuildContext context, int index) {
final txt = cur!.getValueText(index);
final isSel = index == picker!.selecteds[_col];
if (picker!.onBuilderItem != null) {
final _v = picker!.onBuilderItem!(context, txt, null, isSel, _col, index);
if (_v != null) return _v;
}
if (cur!.postfix == null && cur!.suffix == null)
return makeText(null, txt, isSel);
else
return makeTextEx(null, txt, cur!.postfix, cur!.suffix, isSel);
}