abstract sclass DynQuickSearch extends DynCalculatedList {
  transient S query;
  transient new RestartableCountdown autoHide;
  
  start {
    calculateWhenHidden = true;
    ownTimer(vmBus_onMessage('topInput, voidfunc(S s) { doSearch(s) }));
  }
  
  void update {
    S s = unnullTrim(dm_getInterestingString());
    if (neq(s, query)) doSearch(s);
  }

  void doSearch(S s) {
    temp enter();
    query = s;
    super.update();
    if (nempty(query) && nempty(results)) {
      dm_placeModuleUnderAIBar(this, query);
      dm_autoHide(autoHide);
    } else
      dm_hideModule();
  }
  
  final L<S> calc() {
    if (empty(query)) ret emptyList();
    ret calc2();
  }
  
  abstract LS calc_impl();
}