private static bool HasListener(OnEventDispatched eventListener, TType type)
{
Delegate[] invocationList = eventsPerType[type].GetInvocationList();
Delegate existing = invocationList.First(listener => listener == (Delegate)eventListener);
return(existing != null);
}
public static void RemoveListener(OnEventDispatched eventListener, TType type)
{
if (eventsPerType.TryGetValue(type, out OnEventDispatched notification))
{
notification -= eventListener;
}
}
public static void AddListener(OnEventDispatched eventListener, TType type)
{
if (eventsPerType.ContainsKey(type) && HasListener(eventListener, type))
{
eventsPerType[type] += eventListener;
}
else
{
eventsPerType.Add(type, eventListener);
}
}
