/// <summary>
/// Called when the model has changed or is initialized.
/// </summary>
public void UpdateAction(ActionEntity action, IProcessingData context)
{
_selectedQualifier = action.Qualifier;
SetQualifierText((int)_selectedQualifier);
_actionDescriptionNode.Text = action.Action;
_isRelevant = !string.IsNullOrEmpty(_actionDescriptionNode.Text);
AssignmentExpression expression = ActionMaster.InterpretTransitionText(action.Action, context);
_actionDescriptionNode.HintTooltip = expression == null ? "???" : expression.ToString();
bool validExpression = expression != null && expression.IsValid();
Color background = validExpression ? new Color(1, 0, 0, 0f) : new Color(1, 0, 0, 0.2f);
_actionDescriptionNode.AddColorOverride("background_color", background);
}