/// <summary>
/// NOTE 1: http://cs.hubfs.net/blogs/hell_is_other_languages/archive/2008/01/16/4565.aspx
/// </summary>
public void TriggerTransition(TState targetState,
dynamic args = default(dynamic))
{
Ensure.That <ArgumentException>(targetState != null, "targetState not supplied.");
try
{
if (CurrentState == targetState && !PermitSelfTransition)
{
throw new Exception(); //refactor to refine exception
}
if (CurrentState == FinalState)
{
throw new Exception(); //refactor to refine exception
}
if ((CurrentState != targetState || (CurrentState == targetState && !BypassTransitionBehaviorForSelfTransition)))
{
var matches = StateTransitions.Where(t =>
t.InitialStates.Where(s => s == CurrentState).Any() &&
t.EndStates.Where(e => e == targetState).Any());
if (matches.Any())
{
using (var t = new TransactionScope())
//this could be in-memory transactionalised using the memento pattern, or information could be sent to F# (see NOTE 1)
{
OnRaiseBeforeEveryTransition();
CurrentState.ExitAction(args);
matches.First().TransitionAction(targetState, this, args);
targetState.EntryAction(args);
CurrentState = targetState;
OnRaiseAfterEveryTransition();
t.Complete();
}
}
else
{
if (Parent == null)
{
throw new Exception(); //to be caught below, refactor
}
Parent.TriggerTransition(targetState, args);
}
}
}
catch (Exception e)
{
throw new InvalidStateTransitionException <TState>(CurrentState, targetState, innerException: e);
}
}