public @Nullable GridCaptionPanel getFocusedCaptionPanel() {
    if (myHorzCaptionPanel.isFocusOwner()) {
      return myHorzCaptionPanel;
    }
    if (myVertCaptionPanel.isFocusOwner()) {
      return myVertCaptionPanel;
    }
    return null;
  }
public @Nullable GridCaptionPanel getFocusedCaptionPanel()