/// <summary>
/// Find this node's finish transition.
/// Encapsulates a UML spec violation where transition/trigger order matters.
/// </summary>
/// <returns></returns>
protected static UmlTransition FindFinishTransition(UmlNode node)
{
if (node != null && node.Connectors.Count > 0)
{
// The Finishe transition is always index 0 in ActivityMachine.
return(node.Connectors[(int)ActivityTransition.Finish] as UmlTransition);
}
return(null);
}
/// <summary>
/// Find this node's quit transition, if it has one. Only ConditionalNodes have these.
/// Encapsulates a UML spec violation where transition/trigger order matters.
/// </summary>
/// <returns></returns>
protected static UmlTransition FindQuitTransition(UmlNode node)
{
// Only ConditionalNode will have a quit transition.
if (node is ConditionalNode)
{
return((node as ConditionalNode).QuitTransition);
}
return(null);
}
protected virtual void AddNode(UmlNode node)
{
_nodes.Add(node);
node.Entered += HandleNodeEntered;
if (node is BehavioralNode)
{
(node as BehavioralNode).EntryBehaviorsFinished += HandleNodeEntryBehaviorsFinished;
}
}
/// <summary>
/// Find this node's continue transition.
/// Encapsulates a UML spec violation where transition/trigger order matters.
/// </summary>
/// <returns></returns>
protected static UmlTransition FindContinueTransition(UmlNode node)
{
if (node is ConditionalNode)
{
return((node as ConditionalNode).ContinueTransition);
}
// Only ConditionalNodes have quit transitions, so if node is not conditional then
// it's continue transition must be the 2nd one.
if (node != null && node.Connectors.Count > 1)
{
return(node.Connectors[(int)ActivityTransition.Continue] as UmlTransition);
}
return(null);
}
