public void Attach(ICharacterObserver observer)
{
if (observer == null)
{
throw new ArgumentNullException();
}
if (ObserversList.Contains(observer))
{
throw new InvalidOperationException("Cannot have duplicate observers.");
}
ObserversList.Add(observer);
}
public void Detach(ICharacterObserver observer)
{
if (observer == null)
{
throw new ArgumentNullException();
}
if (!ObserversList.Contains(observer))
{
throw new InvalidOperationException("Cannot remove observer when observer not in the list.");
}
if (ObserversList.Count == 0)
{
throw new InvalidOperationException("The observer list is empty. Cannot detach.");
}
ObserversList.Remove(observer);
}
/// <summary>
/// Unsubscribe to remove notifications of the Characterchanged events
/// </summary>
/// <param name="iCO"></param>
public void UnSubscribe(ICharacterObserver iCO)
{
charHandler -= new CharacterHandler <CharacterSheet>(iCO.CharacterChangedEvent);
}
public void Detach(ICharacterObserver observer)
{
if (observer == null)
throw new ArgumentNullException();
if (!ObserversList.Contains(observer))
throw new InvalidOperationException("Cannot remove observer when observer not in the list.");
if (ObserversList.Count == 0)
throw new InvalidOperationException("The observer list is empty. Cannot detach.");
ObserversList.Remove(observer);
}
public void Attach(ICharacterObserver observer)
{
if (observer == null)
throw new ArgumentNullException();
if (ObserversList.Contains(observer))
throw new InvalidOperationException("Cannot have duplicate observers.");
ObserversList.Add(observer);
}
public void Subscribe(ICharacterObserver observer)
{
observers.Add(observer);
}