when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. ThreeDSecureNavigationBarThemeData navigationBar,
    2. int? timeout,
    3. ThreeDSecureLabelThemeData? label,
    4. ThreeDSecureTextFieldThemeData? textField,
    5. ThreeDSecureButtonThemeData? submitButton,
    6. ThreeDSecureButtonThemeData? cancelButton,
    7. ThreeDSecureButtonThemeData? nextButton,
    8. ThreeDSecureButtonThemeData? continueButton,
    9. ThreeDSecureButtonThemeData? resendButton,
    )
)

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( ThreeDSecureNavigationBarThemeData navigationBar,  int? timeout,  ThreeDSecureLabelThemeData? label,  ThreeDSecureTextFieldThemeData? textField,  ThreeDSecureButtonThemeData? submitButton,  ThreeDSecureButtonThemeData? cancelButton,  ThreeDSecureButtonThemeData? nextButton,  ThreeDSecureButtonThemeData? continueButton,  ThreeDSecureButtonThemeData? resendButton)  $default,) {final _that = this;
switch (_that) {
case _ThreeDSecureConfigurationParams():
return $default(_that.navigationBar,_that.timeout,_that.label,_that.textField,_that.submitButton,_that.cancelButton,_that.nextButton,_that.continueButton,_that.resendButton);case _:
  throw StateError('Unexpected subclass');

}
}