protected void TransitionTo(ViewModelState destination)
{
var handlers = ViewModelStateTransitioning;
if (handlers != null)
{
handlers(this, new ViewModelStateTransitioningEventArgs(destination));
}
}
private void TransitionTo(ViewModelState state)
{
if (State != null)
{
State.ViewModelStateTransitioning -= OnViewModelStateTransitioning;
if (State is IDisposable)
{
((IDisposable)State).Dispose();
}
}
if (state == null)
{
state = new AskForBugState();
}
State = state;
State.ViewModelStateTransitioning += OnViewModelStateTransitioning;
DataContext = state;
}
public ViewModelStateTransitioningEventArgs(ViewModelState state)
{
State = state;
}