public override void AddEvent(EventInstance eventToAdd)
{
base.AddEvent(eventToAdd);
while (CanProcess)
ProcessNextEvent(stateMachine.CurrentState);
}
/// <summary>
/// By returning the current state of the fsm, we nullify this event because nobody responded.
/// </summary>
/// <param name="eventToProcess"></param>
/// <returns></returns>
public override State ProcessEvent(State originalState, EventInstance eventToProcess)
{
Transition transition = transitions.MatchTransition(eventToProcess);
if (transition != null)
return TraverseDown(new TransitionEvent(this, transition, eventToProcess));
return originalState;
}
public Transition MatchTransition(EventInstance eventTarget)
{
Transition result = null;
foreach (Transition transition in transitions)
{
if (transition.Matches(eventTarget))
{
if (result != null)
throw new InvalidOperationException("Multiple states eligible for transition");
result = transition;
}
}
return result;
}
public virtual State ProcessEvent(State originalState, EventInstance eventToProcess)
{
Transition transition = transitions.MatchTransition(eventToProcess);
if (transition != null)
{
var transitionEvent = new TransitionEvent(originalState, transition, eventToProcess);
// If originating from substate
if (!this.Equals(originalState))
return originalState.TraverseUp(transitionEvent);
else
{
Exit(transitionEvent);
return parent.TraverseUp(transitionEvent);
}
}
// Not handled, pass it up the chain
return parent.ProcessEvent(originalState, eventToProcess);
}
public EventPostedArgs(EventInstance eventPosted)
{
Event = eventPosted;
}
public StateEventPostedArgs(State state, EventInstance eventPosted)
: base(state)
{
Event = eventPosted;
}
public override bool Matches(EventInstance eventToMatch)
{
return base.Matches(eventToMatch) && guard();
}
public TransitionEvent(State sourceState, Transition transition, EventInstance eventInstance)
{
this.sourceState = sourceState;
this.transition = transition;
this.eventInstance = eventInstance;
}
public override void AddEvent(EventInstance eventToAdd)
{
base.AddEvent(eventToAdd);
eventsQueued.Set();
}
public virtual bool Matches(EventInstance eventToMatch)
{
return eventToMatch.MatchesTransition(this);
}
public virtual void AddEvent(EventInstance eventToAdd)
{
events.Enqueue(eventToAdd);
}
