decodeScrollbarThemeData static method

ScrollbarThemeData? decodeScrollbarThemeData(
  1. dynamic value, {
  2. bool validate = true,
})

Decodes the given value to an ScrollbarThemeData. This expects the given value to follow the structure below:

{
  "crossAxisMargin": <double>,
  "isAlwaysShown": <bool>,
  "mainAxisMargin": <double>,
  "minThumbLength": <double>,
  "radius": <MaterialStatePropertyDouble<Radius>>,
  "showTrackOnHover": <bool>
  "thickness": <double>
}

See also:

Implementation

static ScrollbarThemeData? decodeScrollbarThemeData(
  dynamic value, {
  bool validate = true,
}) {
  ScrollbarThemeData? result;

  if (value is ScrollbarThemeData) {
    result = value;
  } else if (value != null) {
    assert(SchemaValidator.validate(
      schemaId: '$_baseSchemaUrl/scrollbar_theme_data',
      value: value,
      validate: validate,
    ));
    result = ScrollbarThemeData(
      crossAxisMargin: JsonClass.parseDouble(value['crossAxisMargin']),
      isAlwaysShown: value['isAlwaysShown'] == null
          ? null
          : JsonClass.parseBool(value['isAlwaysShown']),
      mainAxisMargin: JsonClass.parseDouble(value['mainAxisMargin']),
      minThumbLength: JsonClass.parseDouble(value['minThumbLength']),
      radius: decodeRadius(
        value['radius'],
        validate: false,
      ),
      showTrackOnHover: value['showTrackOnHover'] == null
          ? null
          : JsonClass.parseBool(value['showTrackOnHover']),
      thickness: decodeMaterialStatePropertyDouble(
        value['thickness'],
        validate: false,
      ),
    );
  }

  return result;
}