DrawItemContent.fromJson constructor

DrawItemContent.fromJson(Map<String, dynamic> data, { PaintContent contentFactory(String type, Map<String, dynamic> jsonStepMap)?, })

Implementation

factory DrawItemContent.fromJson(
  Map<String, dynamic> data, {
  PaintContent Function(String type, Map<String, dynamic> jsonStepMap)?
      contentFactory,
}) {
  return DrawItemContent(
    size: data['size'] as double,
    paintContents: (data['paintContents'] as List<dynamic>).map((dynamic e) {
      final String type = e['type'] as String;

      final Map<String, dynamic> contentJson = e as Map<String, dynamic>;

      switch (type) {
        case 'Circle':
          return Circle.fromJson(contentJson);
        case 'Eraser':
          return Eraser.fromJson(contentJson);
        case 'Rectangle':
          return Rectangle.fromJson(contentJson);
        case 'SimpleLine':
          return SimpleLine.fromJson(contentJson);
        case 'SmoothLine':
          return SmoothLine.fromJson(contentJson);
        case 'StraightLine':
          return StraightLine.fromJson(contentJson);
      }

      return contentFactory?.call(type, contentJson) ??
          EmptyContent.fromJson(contentJson);
    }).toList(),
  );
}