public virtual void registerStateObserver(FormElementStateListener qsl)
{
if (!observers.Contains(qsl))
{
observers.Add(qsl);
}
}
public void unregisterStateObserver(FormElementStateListener qsl)
{
if (observers != null)
{
observers.Remove(qsl);
if (observers.Count < 1)
{
observers = null;
}
}
}
/* ==== OBSERVER PATTERN ==== */
public void registerStateObserver(FormElementStateListener qsl)
{
if (observers == null)
{
observers = new ArrayList();
}
if (!observers.Contains(qsl))
{
observers.Add(qsl);
}
}
public virtual void unregisterStateObserver(FormElementStateListener qsl)
{
observers.Remove(qsl);
}
