pickSegmentValue<T> method

Future<Set<T>?> pickSegmentValue<T>(List<LabelValue<T>> items, { String? title, String? message, Set<T>? selected, bool multi = false, bool allowEmpty = true, })

Implementation

Future<Set<T>?> pickSegmentValue<T>(List<LabelValue<T>> items, {String? title, String? message, Set<T>? selected, bool multi = false, bool allowEmpty = true}) async {
  if (!allowEmpty && (selected == null || selected.isEmpty)) selected = {items.first.value};
  return showColumn(
    title: title,
    ok: true,
    cancel: true,
    onContent: (uc) {
      if (!uc.hasResult) {
        uc.setResult({...?selected});
      }
      return ColumnMinStretch([
        if (message != null) messageWidget(message),
        SegmentedButton<T>(
          multiSelectionEnabled: multi,
          emptySelectionAllowed: allowEmpty,
          showSelectedIcon: false,
          style: SegStyle,
          segments: items.mapList((e) => ButtonSegment<T>(value: e.value, label: e.label.text())),
          selected: uc.getResult()!,
          onSelectionChanged: (newSelection) {
            uc.setResult(newSelection);
            uc.updateState();
          },
        ),
      ], spacing: 16);
    },
  );
}