public void AddChangeListener(string key, ISettingsChangeListener listener)
{
if (key == null)
{
key = "";
}
WeakReferenceList <ISettingsChangeListener> existing = null;
if (!ChangeListeners.TryGetValue(key, out existing))
{
ChangeListeners[key] = existing = new WeakReferenceList <ISettingsChangeListener>();
}
existing.Add(listener);
}
public void Unsubscribe(ISettingsChangeListener listener)
{
_listeners.RemoveAll(x => ReferenceEquals(listener, x.Target));
}
public void Subscribe(ISettingsChangeListener listener)
{
_listeners.Add(new WeakReference(listener));
}
