!7

sclass GeneralKeywordList extends DynCalculatedList {
  Set<S> set;
  
  JComponent visualize() {
    ret centerAndSouthWithMargins(super.visualize(),
      jcenteredbuttons("Add a keyword...", r {
        inputText("Add keyword", voidfunc(S s) {
          lock lock;
          add(set, trim(s));
          change();
        });
      }));
  }
  
  L<S> calc() {
    ret sortedIC(set);
  }
}