PrfEnum<T extends Enum> constructor

PrfEnum<T extends Enum>(String key, { required List<T> values, T? defaultValue, })

Creates a new enum preference variable with the specified key.

values is required and should be the enum's values list (e.g., MyEnum.values).

The optional defaultValue is returned if the preference is not found or if an error occurs while reading.

Implementation

PrfEnum(super.key, {required List<T> values, super.defaultValue})
    : super(
        from: (index) {
          if (index == null || index < 0 || index >= values.length) {
            return null;
          }
          return values[index];
        },
        to: (e) => e.index,
        getter: (prefs, key) async => await prefs.getInt(key),
        setter: (prefs, key, value) async => await prefs.setInt(key, value),
      );