decodeTextDirection static method

TextDirection? decodeTextDirection(
  1. dynamic value, {
  2. bool validate = true,
})

Decodes the value to a TextDirection. Supported values are:

  • ltr
  • rtl

Implementation

static TextDirection? decodeTextDirection(
  dynamic value, {
  bool validate = true,
}) {
  TextDirection? result;
  if (value is TextDirection) {
    result = value;
  } else {
    _checkSupported(
      'TextDirection',
      [
        'ltr',
        'rtl',
      ],
      value,
    );

    if (value != null) {
      assert(SchemaValidator.validate(
        schemaId: '$_baseSchemaUrl/text_direction',
        value: value,
        validate: validate,
      ));
      switch (value) {
        case 'ltr':
          result = TextDirection.ltr;
          break;

        case 'rtl':
          result = TextDirection.rtl;
          break;
      }
    }
  }

  return result;
}