I submitted an issue here: https://github.com/vaadin-component-factory/mul

Thang14 · March 3, 2022, 7:14am

I submitted an issue here:

github.com/vaadin-component-factory/multiselect-combo-box

LazyDataProvider doesn't show current selected items on popup

opened 08:20AM - 19 Feb 22 UTC

closed 03:20PM - 20 Dec 22 UTC

Version 0.4.0. Vaadin 14.7.5 Java 11 Using LazyDataProvider [(https://vaadi…n.com/directory/component/multicombobox-component/discussions)](https://vaadin.com/directory/component/multicombobox-component/discussions) , code tries to set current selected items (**setItemWatcher**) to the MultiComboBox. But popup not show these selected items (the selected icon not show). Re-select items again, item will be duplicated on the selected items list. <img width="591" alt="image" src="https://user-images.githubusercontent.com/13396193/154792865-d33a0e38-8b62-4689-8134-cf86129fd078.png"> ``` private void createComboboxWatcher() { cbSelectWatcher = new MultiComboBox(50); cbSelectWatcher.setLabel(myMessageManager.getMessageCustom("CompanyRequestConfigView.text.cbSelectWatcher")); cbSelectWatcher.setDataProvider(userService::fetch, userService::count); getFormLayout().add(cbSelectWatcher); getBinder().forField(cbSelectWatcher).bind(RaTemplate::getComboboxSelectWatcher, RaTemplate::setComboboxSelectWatcher); } public void setItemWatcher(List<RAUserSelect> listWatcher) { HashSet<RAUserSelect> hashWatcher = new HashSet<>(); for (RAUserSelect raUserSelect : listWatcher) { hashWatcher.add(raUserSelect); } cbSelectWatcher.setValue(hashWatcher); } public class UserService { private UserData userData = new UserData(); public UserService() { } public UserService(String companyID) { userData.setCompanyID(companyID); } public Stream<RAUserSelect> fetch(String filter, int offset, int limit) { return userData.getAllUser().stream() .filter(person -> filter == null || person.toString().toLowerCase().startsWith(filter.toLowerCase())) .skip(offset).limit(limit); } public int count(String filter) { return (int) userData.getAllUser().stream() .filter(person -> filter == null || person.toString().toLowerCase().startsWith(filter.toLowerCase())) .count(); } public Stream<RAUserSelect> fetchPage(String filter, int page, int pageSize) { return userData.getAllUser().stream() .filter(person -> filter == null || person.toString().toLowerCase().startsWith(filter.toLowerCase())) .skip(page * pageSize).limit(pageSize); } public int count() { return userData.getAllUser().size(); } public List<RAUserSelect> fetchAll() { return userData.getAllUser(); } } ```

Goran32 · March 16, 2022, 7:02am

Hi Thang,

The issue you have linked is for a different component.

BR,

Thang14 · March 20, 2022, 1:48am

oh, sorry. my wrong post