public override State TraverseDown(TransitionEvent transitionEvent)
{
Enter(transitionEvent);
// If we have history, transition there
if (lastState != null)
{
Transition transition = new Transition(this, HistoryTransition, lastState);
TransitionEvent transitionFromHistory = new TransitionEvent(this, transition, new EventInstance(HistoryTransition));
return TraverseUp(transitionFromHistory);
}
// If we have no history, transition to parent
else
{
Transition transition = new Transition(this, StateMachine.DefaultEntryEvent, Parent);
TransitionEvent transitionToDefault =
new TransitionEvent(this, transition, new EventInstance(StateMachine.DefaultEntryEvent));
return TraverseUp(transitionToDefault);
}
}
public override bool MatchesTransition(Transition transition)
{
return base.MatchesTransition(transition) && transition.SourceState.Equals(targetState);
}
public void AddTransition(Transition transition)
{
transitions.AddTransition(transition);
}
public virtual bool MatchesTransition(Transition transition)
{
return eventTarget.Equals(transition.EventTarget);
}
public TransitionEvent(State sourceState, Transition transition, EventInstance eventInstance)
{
this.sourceState = sourceState;
this.transition = transition;
this.eventInstance = eventInstance;
}