abstract sclass DynQuickSearch extends DynCalculatedList {
  transient S query;
  transient new RestartableCountdown autoHide;
  
  start {
    calculateWhenHidden = true;
    ownResource(vmBus_onMessage('topInput, voidfunc(S s) { doSearch(s) }));
    ownResource(vmBus_onMessage('topInputChanged, voidfunc(S s) { if (neq(s, query)) doSearch(s) }));
    ownResource(vmBus_onMessage('hideQuickSearchModules, rEnter dm_hideModule);
  }
  
  void doSearch(S s) {
    temp enter();
    if (dm_osLoading()) ret;
    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 calc_impl();
  }
  
  abstract LS calc_impl();
  
  void enhanceFrame(Container f) {
    super.enhanceFrame(f);
    setClosable(f, false);
  }
  
  // API
  
  void selectFirstEntry() {
    selectRow(list, 0);
  }
}