rankedCompatibleChartTypesForJson function

List<ChartType> rankedCompatibleChartTypesForJson(Map<String, dynamic> source, { List<ChartType>? preferredOrder, bool includeCurrentType = false, bool registeredOnly = true, })

Returns compatible target chart types ranked by preferredOrder.

By default, current type is excluded so the first result is a true alternative for runtime switching.

Implementation

List<ChartType> rankedCompatibleChartTypesForJson(
  Map<String, dynamic> source, {
  List<ChartType>? preferredOrder,
  bool includeCurrentType = false,
  bool registeredOnly = true,
}) {
  final compatible = compatibleChartTypesForJson(
    source,
    registeredOnly: registeredOnly,
  );
  if (compatible.isEmpty) return const [];

  final ranked = <ChartType>[];
  for (final t in preferredOrder ?? const <ChartType>[]) {
    if (compatible.contains(t) && !ranked.contains(t)) {
      ranked.add(t);
    }
  }
  for (final t in compatible) {
    if (!ranked.contains(t)) {
      ranked.add(t);
    }
  }

  if (!includeCurrentType) {
    final current = _tryParseCanonicalType(source['type']);
    if (current != null) {
      ranked.remove(current);
    }
  }
  return ranked;
}