decodeVerticalDirection static method

VerticalDirection? decodeVerticalDirection(
  1. dynamic value, {
  2. bool validate = true,
})

Decodes the value to a VerticalDirection. Supported values are:

  • down
  • up

Implementation

static VerticalDirection? decodeVerticalDirection(
  dynamic value, {
  bool validate = true,
}) {
  VerticalDirection? result;
  if (value is VerticalDirection) {
    result = value;
  } else {
    _checkSupported(
      'VerticalDirection',
      [
        'down',
        'up',
      ],
      value,
    );

    if (value != null) {
      switch (value) {
        case 'down':
          result = VerticalDirection.down;
          break;
        case 'up':
          result = VerticalDirection.up;
          break;
      }
    }
  }

  return result;
}