How do I edit a List<String> within a listbox directly?

asked 2015-11-18 02:23:25 +0800

KlausWr
37 ● 5

I know how to edit a List<pojo> by using a listbox. But when I try to use a listbox to edit a simple List<string>, I always get an exception

org.zkoss.zk.ui.UiException: java.lang.Long cannot be cast to java.lang.String

class EditableListboxViewModel:

public class EditableListboxViewModel {

    List<String> list = new ArrayList<String>();

    @Init
    public void init() {
        list.add("test");
        list.add("test");
    }

    public List<String> getList() {
        return list;
    }
}

EditableListbox.zul:

<zk>
    <vbox apply="org.zkoss.bind.BindComposer"
        viewModel="@id('vm') @init('experiment.EditableListboxViewModel')">

        <listbox model="@bind(vm.list)">
            <template name="model">
                <listitem>
                    <listcell>
                        <textbox value="@bind(each)" />
                    </listcell>
                </listitem>
            </template>
        </listbox>
    </vbox>
</zk>

I also tried the following (as I thought an immutable string might be the problem):

@Init
public void init() {
    list.add(new String("test"));   
    list.add(new String("test"));   
}