private void updateTables() {
   if (frame.getTabbedPane().getTabCount() == 0) {
     return;
   }
   for (int i = 0; i < frame.getTabbedPane().getTabCount(); i++) {
     frame.getTabbedPane().getComponentAt(i);
   }
 }
  /**
   * Cycle through all databases, and make sure everything is updated with the new type
   * customization. This includes making sure all entries have a valid type, that no obsolete entry
   * editors are around, and that the right-click menus' change type menu is up-to-date.
   */
  private void updateTypesForEntries(String typeName) {
    if (frame.getTabbedPane().getTabCount() == 0) {
      return;
    }
    for (int i = 0; i < frame.getTabbedPane().getTabCount(); i++) {
      BasePanel bp = (BasePanel) frame.getTabbedPane().getComponentAt(i);

      // Invalidate associated cached entry editor
      bp.entryEditors.remove(typeName);

      for (BibtexEntry entry : bp.database().getEntries()) {
        entry.updateType();
      }
    }
  }