wrapMeList static method

List<Widget> wrapMeList(List<Widget>? header, List<Widget> children, List<Widget>? footer)

Implementation

static List<Widget> wrapMeList(
  List<Widget>? header,
  List<Widget> children,
  List<Widget>? footer,
) {
  var rst = <Widget>[];
  rst.addAll(header ?? []);
  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    assert(() {
      if (child.key == null) {
        throw FlutterError(
          'Every item of ReorderableGridView must have a key.',
        );
      }
      return true;
    }());
    rst.add(ReorderableItemView(
      key: child.key!,
      index: i,
      indexInAll: i + (header?.length?? 0),
      child: child,
    ));
  }

  rst.addAll(footer ?? []);
  return rst;
}