maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>(
  1. TResult $default(
    1. String? surfaceColor,
    2. String? botBubbleColor,
    3. String? userBubbleColor,
    4. String? botTextColor,
    5. String? userTextColor,
    )?, {
  2. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( String? surfaceColor,  String? botBubbleColor,  String? userBubbleColor,  String? botTextColor,  String? userTextColor)?  $default,{required TResult orElse(),}) {final _that = this;
switch (_that) {
case _ChatAppearance() when $default != null:
return $default(_that.surfaceColor,_that.botBubbleColor,_that.userBubbleColor,_that.botTextColor,_that.userTextColor);case _:
  return orElse();

}
}