decode static method

Implementation

static BackgroundLayer decode(String properties) {
  var map = json.decode(properties);
  if (map["layout"] == null) {
    map["layout"] = {};
  }
  if (map["paint"] == null) {
    map["paint"] = {};
  }
  return BackgroundLayer(
    id: map["id"],
    minZoom: map["minzoom"]?.toDouble(),
    maxZoom: map["maxzoom"]?.toDouble(),
    slot: map["slot"],
    visibility: map["layout"]["visibility"] == null
        ? Visibility.VISIBLE
        : Visibility.values.firstWhere(
            (e) => e.name
                .toLowerCase()
                .replaceAll("_", "-")
                .contains(map["layout"]["visibility"]),
          ),
    visibilityExpression: styleOptionalCastList(map["layout"]["visibility"]),
    filter: styleOptionalCastList(map["filter"]),
    backgroundColor: (map["paint"]["background-color"] as List?)?.toRGBAInt(),
    backgroundColorExpression: styleOptionalCastList(
      map["paint"]["background-color"],
    ),
    backgroundEmissiveStrength: styleOptionalCast(
      map["paint"]["background-emissive-strength"],
    ),
    backgroundEmissiveStrengthExpression: styleOptionalCastList(
      map["paint"]["background-emissive-strength"],
    ),
    backgroundOpacity: styleOptionalCast(map["paint"]["background-opacity"]),
    backgroundOpacityExpression: styleOptionalCastList(
      map["paint"]["background-opacity"],
    ),
    backgroundPattern: styleOptionalCast(map["paint"]["background-pattern"]),
    backgroundPatternExpression: styleOptionalCastList(
      map["paint"]["background-pattern"],
    ),
    backgroundPitchAlignment:
        map["paint"]["background-pitch-alignment"] == null
        ? null
        : BackgroundPitchAlignment.values.firstWhere(
            (e) => e.name
                .toLowerCase()
                .replaceAll("_", "-")
                .contains(map["paint"]["background-pitch-alignment"]),
          ),
    backgroundPitchAlignmentExpression: styleOptionalCastList(
      map["paint"]["background-pitch-alignment"],
    ),
  );
}