multiSelectListBox

<vbox width="AUTO">
    <h4 text="Single-select ListBox"/>
    <listBox id="listBox"/>
</vbox>
<vbox width="AUTO">
    <h4 text="Multi-select ListBox"/>
    <multiSelectListBox id="multiSelectListBox"/>
</vbox>

@ViewComponent
protected JmixListBox<String> listBox;
@ViewComponent
protected JmixMultiSelectListBox<String> multiSelectListBox;

@Subscribe
protected void onInit(InitEvent event) {
    List<String> items = List.of("CSS", "HTML", "Java", "JavaScript", "JSON", "Kotlin", "XML");
    listBox.setItems(items);
    multiSelectListBox.setItems(items);

    listBox.setValue("Java");
    multiSelectListBox.select("Java", "Kotlin");
}

@Install(to = "multiSelectListBox", subject = "itemEnabledProvider")
private boolean multiSelectListBoxItemEnabledProvider(final User user) {
    if (user != null) {
        return user.getActive();
    }
    return true;
}

@Install(to = "multiSelectListBox", subject = "itemLabelGenerator")
private String multiSelectListBoxItemLabelGenerator(final User item) {
    return metadataTools.format(item.getDisplayName()).toUpperCase();
}

@Supply(to = "mSelectListBox", subject = "renderer")
private ComponentRenderer<Span, User> mSelectListBoxRenderer() {
    return new ComponentRenderer<>(user -> {
        Span span = uiComponents.create(Span.class);
        span.setText(user.getDisplayName());
        span.setClassName("font-bold");
        return span;
    });
}