@Named
@ViewScoped
public class ContainerDynaFormController implements Serializable {

    private static final long serialVersionUID = 20130426L;

    private DynaFormModel model;
    private List<SelectItem> list;
    private FormField selectedField;
    private String selectedItem;
    private String containerClientId; // container clientId of the currently handled input field

    @PostConstruct
    protected void initialize() {
        list = new ArrayList<SelectItem>();
        list.add(new SelectItem("Item 1", "Item 1"));
        list.add(new SelectItem("Item 2", "Item 2"));
        list.add(new SelectItem("Item 3", "Item 3"));
        list.add(new SelectItem("Item 4", "Item 4"));

        model = new DynaFormModel();

        // add rows, labels and editable controls
        // set relationship between label and editable controls to support outputLabel
        // with "for" attribute

        // 1. row
        DynaFormRow row = model.createRegularRow();

        final DynaFormLabel label11 = row.addLabel("Input 1");
        final DynaFormControl control12 = row.addControl(new FormField("Some text"));
        label11.setForControl(control12);

        final DynaFormLabel label13 = row.addLabel("Input 2");
        final DynaFormControl control14 = row.addControl(new FormField("Some text"));
        label13.setForControl(control14);

        // 2. row
        row = model.createRegularRow();

        final DynaFormLabel label21 = row.addLabel("Input 3");
        final DynaFormControl control22 = row.addControl(new FormField("Some text"));
        label21.setForControl(control22);

        final DynaFormLabel label23 = row.addLabel("Input 4");
        final DynaFormControl control24 = row.addControl(new FormField("Some text"));
        label23.setForControl(control24);
    }

    public void updateSelection() {
        final FacesContext fc = FacesContext.getCurrentInstance();

        // update selected item value for the currently handled field
        selectedField.setValue(selectedItem);

        // update the corresponding input field in UI
        PrimeFaces.current().ajax().update(containerClientId + UINamingContainer.getSeparatorChar(fc) + "txt");
    }

    public List<String> getValues() {
        if (model == null) {
            return null;
        }

        final List<String> values = new ArrayList<String>();
        for (final DynaFormLabel dynaFormLabel : model.getLabels()) {
            values.add(
                        dynaFormLabel.getValue() + ": " + ((FormField) dynaFormLabel.getForControl().getData()).getValue());
        }

        return values;
    }

    public DynaFormModel getModel() {
        return model;
    }

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

    public FormField getSelectedField() {
        return selectedField;
    }

    public void setSelectedField(final FormField selectedField) {
        this.selectedField = selectedField;
    }

    public String getSelectedItem() {
        return selectedItem;
    }

    public void setSelectedItem(final String selectedItem) {
        this.selectedItem = selectedItem;
    }

    public String getContainerClientId() {
        return containerClientId;
    }

    public void setContainerClientId(final String containerClientId) {
        this.containerClientId = containerClientId;
    }
}