fromJson static method

LabelColor? fromJson(dynamic value)

Returns a new LabelColor instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static LabelColor? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      assert(json.containsKey(r'textColor'), 'Required key "LabelColor[textColor]" is missing from JSON.');
      assert(json[r'textColor'] != null, 'Required key "LabelColor[textColor]" has a null value in JSON.');
      assert(json.containsKey(r'backgroundColor'), 'Required key "LabelColor[backgroundColor]" is missing from JSON.');
      assert(json[r'backgroundColor'] != null, 'Required key "LabelColor[backgroundColor]" has a null value in JSON.');
      return true;
    }());

    return LabelColor(
      textColor: mapValueOfType<String>(json, r'textColor')!,
      backgroundColor: mapValueOfType<String>(json, r'backgroundColor')!,
    );
  }
  return null;
}