when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. VoDashboardPane? currentPane,
    2. List<VoDashboardPane> dockPanes,
    3. List<VoDashboardPane> drawerPanes,
    4. List<VoDashboardPane> endDrawerPanes,
    5. List<VoDashboardPane> registry,
    6. List<VoPage> flowPages,
    7. bool canPopShell,
    8. bool isInitialized,
    )
)

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( VoDashboardPane? currentPane,  List<VoDashboardPane> dockPanes,  List<VoDashboardPane> drawerPanes,  List<VoDashboardPane> endDrawerPanes,  List<VoDashboardPane> registry,  List<VoPage> flowPages,  bool canPopShell,  bool isInitialized)  $default,) {final _that = this;
switch (_that) {
case _VoDashboardState():
return $default(_that.currentPane,_that.dockPanes,_that.drawerPanes,_that.endDrawerPanes,_that.registry,_that.flowPages,_that.canPopShell,_that.isInitialized);case _:
  throw StateError('Unexpected subclass');

}
}