when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. Glyph glyph,
    2. VoidCallback? onPressed,
    3. String? tooltip,
    4. bool isLoading,
    5. bool? isSelected,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( Glyph glyph,  VoidCallback? onPressed,  String? tooltip,  bool isLoading,  bool? isSelected)  $default,) {final _that = this;
switch (_that) {
case _IconButtonData():
return $default(_that.glyph,_that.onPressed,_that.tooltip,_that.isLoading,_that.isSelected);case _:
  throw StateError('Unexpected subclass');

}
}