/// <summary>
/// Handles node entry event, which happens before the ENTRY Behavior is executed.
/// This implementation sets the machine's model's state to the new value given by the entered node.
/// This inherits thread-safety from the critical sections established around TraverseConnector calls.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
protected override void HandleNodeEntered(object sender, NodeEnteredEventArgs args)
{
var changeArgs = GetStateChangedEventArgs(sender, args);
// Update the StatefulModel, if there is one.
if (StatefulModel != null)
{
StatefulModel.State = changeArgs.NewState;
}
// Raise an event for the state entry.
OnStateEntered(changeArgs);
}
private StateChangedEventArgs <TState> GetStateChangedEventArgs(object sender, NodeEnteredEventArgs args)
{
var newState = GetNodeAsState(sender as StateNode);
var oldState = GetStringAsState(RequiredPseudoStateValue);
var changeArgs = new StateChangedEventArgs <TState>()
{
NewState = newState, OldState = oldState
};
var transition = args.EnteredFrom as UmlTransition;
if (transition != null && transition.Supplier is StateNode)
{
changeArgs.OldState = GetNodeAsState(transition.Supplier as StateNode);
}
return(changeArgs);
}
protected abstract void HandleNodeEntryBehaviorsFinished(object sender, NodeEnteredEventArgs args);
protected override void HandleNodeEntryBehaviorsFinished(object sender, NodeEnteredEventArgs args)
{
// Raise the state change event now that the behaviors are done.
OnStateChanged(GetStateChangedEventArgs(sender, args));
}
protected abstract void HandleNodeEntered(object sender, NodeEnteredEventArgs args);