YUndoEvent.fromJson constructor

YUndoEvent.fromJson(Object? json_)

Returns a new instance from a JSON value. May throw if the value does not have the expected structure.

Implementation

factory YUndoEvent.fromJson(Object? json_) {
  final json = json_ is Map
      ? _spec.fields.map((f) => json_[f.label]).toList(growable: false)
      : json_;
  return switch (json) {
    [final origin, final kind, final stackItem] ||
    (final origin, final kind, final stackItem) =>
      YUndoEvent(
        origin: Option.fromJson(
            origin,
            (some) => (some is Uint8List
                ? some
                : Uint8List.fromList((some! as List).cast()))).value,
        kind: YUndoKind.fromJson(kind),
        stackItem: StackItemSets.fromJson(stackItem),
      ),
    _ => throw Exception('Invalid JSON $json_')
  };
}