void enableItems(Collection<Integer> indices, boolean enabled) {
    if (indices == null || indices.isEmpty())
      return;

    for (int c = 0; c < myItems.size(); ++c) {
      if (!indices.contains(c))
        continue;
      final ItemData id = myItems.get(c);
      id.myEnabled = enabled;
    }

    synchronized (this) {
      NST.enableScrubberItems(myNativePeer, indices, enabled);
    }
  }
void enableItems(Collection<Integer> indices, boolean enabled)