setMapLanguage method

@override Future<void> setMapLanguage(String language)

Implementation

@override
Future<void> setMapLanguage(String language) async {
  final layers = _map.getLayers();

  final languageRegex = RegExp("(name:[a-z]+)");

  final symbolLayers = layers.where((layer) => layer.type == "symbol");

  for (final layer in symbolLayers) {
    final dynamic properties = _map.getLayoutProperty(layer.id, 'text-field');

    if (properties == null) {
      continue;
    }

    // We could skip the current iteration, whenever there is not current language.
    if (!languageRegex.hasMatch(properties.toString())) {
      continue;
    }

    final newProperties = [
      "coalesce",
      ["get", "name:$language"],
      ["get", "name:latin"],
      ["get", "name"],
    ];

    _map.setLayoutProperty(layer.id, 'text-field', newProperties);
  }
}