@Named
@ViewScoped
public class DynaFormController implements Serializable {

    private static final long serialVersionUID = 20120423L;
    private static List<SelectItem> languages = new ArrayList<>();

    private DynaFormModel model;

    @PostConstruct
    protected void initialize() {
        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("Author");
        final DynaFormControl control12 = row.addControl(new BookProperty("Author", true), "input");
        label11.setForControl(control12);

        final DynaFormLabel label13 = row.addLabel("ISBN");
        final DynaFormControl control14 = row.addControl(new BookProperty("ISBN", true), "input");
        label13.setForControl(control14);

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

        final DynaFormLabel label21 = row.addLabel("Title");
        final DynaFormControl control22 = row.addControl(new BookProperty("Title", false), "input", 3, 1);
        label21.setForControl(control22);

        // 3. row
        row = model.createRegularRow();

        final DynaFormLabel label31 = row.addLabel("Publisher");
        final DynaFormControl control32 = row.addControl(new BookProperty("Publisher", false), "input");
        label31.setForControl(control32);

        final DynaFormLabel label33 = row.addLabel("Published on");
        final DynaFormControl control34 = row.addControl(new BookProperty("Published on", false), "calendar");
        label33.setForControl(control34);

        // 4. row
        row = model.createRegularRow();

        final DynaFormLabel label41 = row.addLabel("Language");
        final DynaFormControl control42 = row.addControl(new BookProperty("Language", false), "select");
        label41.setForControl(control42);

        final DynaFormLabel label43 = row.addLabel("Description", 1, 2);
        final DynaFormControl control44 = row.addControl(new BookProperty("Description", false), "textarea", 1, 2);
        label43.setForControl(control44);

        // 5. row
        row = model.createRegularRow();

        final DynaFormLabel label51 = row.addLabel("Rating");
        final DynaFormControl control52 = row.addControl(new BookProperty("Rating", 3, true), "rating");
        label51.setForControl(control52);
    }

    public DynaFormModel getModel() {
        return model;
    }

    public List<BookProperty> getBookProperties() {
        if (model == null) {
            return null;
        }

        final List<BookProperty> bookProperties = new ArrayList<>();
        for (final DynaFormControl dynaFormControl : model.getControls()) {
            bookProperties.add((BookProperty) dynaFormControl.getData());
        }

        return bookProperties;
    }

    public String submitForm() {
        final FacesMessage.Severity sev = FacesContext.getCurrentInstance().getMaximumSeverity();
        final boolean hasErrors = sev != null && FacesMessage.SEVERITY_ERROR.compareTo(sev) >= 0;

        PrimeFaces.current().ajax().addCallbackParam("isValid", !hasErrors);

        return null;
    }

    public List<SelectItem> getLanguages() {
        if (languages.isEmpty()) {
            languages.add(new SelectItem("en", "English"));
            languages.add(new SelectItem("de", "German"));
            languages.add(new SelectItem("ru", "Russian"));
            languages.add(new SelectItem("tr", "Turkish"));
        }

        return languages;
    }
}
            

public class BookProperty implements Serializable {

    private static final long serialVersionUID = 20120521L;

    private String name;
    private Object value;
    private boolean required;

    public BookProperty(String name, boolean required) {
        this.name = name;
        this.required = required;
    }

    public BookProperty(String name, Object value, boolean required) {
        this.name = name;
        this.value = value;
        this.required = required;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Object getValue() {
        return value;
    }

    public Object getFormattedValue() {
        if (value instanceof Date) {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("d MMM yyyy");

            return simpleDateFormat.format(value);
        }

        return value;
    }

    public void setValue(Object value) {
        this.value = value;
    }

    public boolean isRequired() {
        return required;
    }

    public void setRequired(boolean required) {
        this.required = required;
    }
}