public void AddCompositeChangedCallback(KeyCallbackFn callback) { _compChange.Add(callback); }
public void AddLayerChangedCallback(KeyCallbackFn callback) { _layerChange.Add(callback); }
public void RemoveCompositeChangedCallback(KeyCallbackFn callback) { _compChange.Remove(callback); }
// public methods public void RemoveLayerChangedCallback(KeyCallbackFn callback) { _layerChange.Remove(callback); }