pickGridValueSet<T> static method

Future<Set<T>?> pickGridValueSet<T>(
  1. List<T> items, {
  2. Iterable<T>? selected,
  3. String? title,
  4. Widget onItemView(
    1. T,
    2. Set<T>
    )?,
  5. Widget? onTitle(
    1. T
    )?,
  6. Widget? onHeader(
    1. T
    )?,
  7. Widget? onFooter(
    1. T
    )?,
  8. List<Widget>? aboveWidgets,
  9. List<Widget>? belowWidgets,
  10. int columnCount = 0,
  11. double itemWidth = 80,
  12. double? itemHeight,
  13. double aspectRatio = 1.0,
  14. double verticalSpacing = 0.0,
  15. double horizontalSpacing = 0.0,
  16. EdgeInsets? padding,
  17. DialogWidth? dialogWidth,
})

Implementation

static Future<Set<T>?> pickGridValueSet<T>(
  List<T> items, {
  Iterable<T>? selected,
  String? title,
  Widget Function(T, Set<T>)? onItemView,
  Widget? Function(T)? onTitle,
  Widget? Function(T)? onHeader,
  Widget? Function(T)? onFooter,
  List<Widget>? aboveWidgets,
  List<Widget>? belowWidgets,
  int columnCount = 0,
  double itemWidth = 80,
  double? itemHeight,
  double aspectRatio = 1.0,
  double verticalSpacing = 0.0,
  double horizontalSpacing = 0.0,
  EdgeInsets? padding,
  DialogWidth? dialogWidth,
}) async {
  Set<T> resultSet = {};
  if (selected != null) resultSet.addAll(selected);
  return await showDialogX((b) {
    b.init(result: resultSet);
    return b.buildGrid(
      items,
      aboveWidgets: aboveWidgets,
      belowWidgets: belowWidgets,
      columnCount: columnCount,
      itemWidth: itemWidth,
      itemHeight: itemHeight,
      aspectRatio: aspectRatio,
      verticalSpacing: verticalSpacing,
      horizontalSpacing: horizontalSpacing,
      padding: padding,
      builder: (iic) {
        T item = iic.item;
        Widget cell;
        if (onItemView != null) {
          cell = onItemView.call(item, resultSet);
        } else {
          bool checked = resultSet.contains(item);
          cell = GridTile(header: onHeader?.call(item), footer: onFooter?.call(item), child: onTitle?.call(item) ?? item.toString().titleMedium().centered()).let((e) {
            if (!checked) return e;
            return e.coloredBox(b.gridSelectedBackground).clipRoundRect(3);
          });
        }
        return cell.inkWell(
          onTap: () {
            if (resultSet.contains(item)) {
              resultSet.remove(item);
            } else {
              resultSet.add(item);
            }
            b.updateState();
          },
        );
      },
      title: title,
      ok: true,
      cancel: true,
      dialogWidth: dialogWidth,
    );
  });
}