public void encodeBeginField()

in tobago-core/src/main/java/org/apache/myfaces/tobago/internal/renderkit/renderer/SelectManyShuttleRenderer.java [50:146]
83 lines of code
13 McCabe index (conditional complexity)

  public void encodeBeginField(final FacesContext facesContext, final T component) throws IOException {

    final TobagoResponseWriter writer = getResponseWriter(facesContext);
    final String clientId = component.getClientId(facesContext);
    final Markup markup = component.getMarkup() != null ? component.getMarkup() : Markup.NULL;

    writer.startElement(HtmlElements.DIV);
    writer.writeClassAttribute(
        TobagoClass.BODY,
        component.getCustomClass(),
        markup != null && markup.contains(Markup.SPREAD) ? TobagoClass.SPREAD : null);
    HtmlRendererUtils.writeDataAttributes(facesContext, writer, component);
    final String title = HtmlRendererUtils.getTitleFromTipAndMessages(facesContext, component);
    if (title != null) {
      writer.writeAttribute(HtmlAttributes.TITLE, title, true);
    }
//    final boolean hasLabel = component.hasLabel(); // XXX is needed?
    final List<SelectItem> items = SelectItemUtils.getItemList(facesContext, component);
    final boolean disabled = !items.iterator().hasNext() || component.isDisabled();
    final boolean readonly = component.isReadonly();

    final String unselectedLabel = component.getUnselectedLabel();
    if (unselectedLabel != null) {
      writer.startElement(HtmlElements.DIV);
      writer.write(unselectedLabel);
      writer.endElement(HtmlElements.DIV);
    }
    Integer size = component.getSize();
    size = Math.max(size != null ? size : items.size(), 2); // must be > 1

    writer.startElement(HtmlElements.SELECT);
    final String unselectedClientId = clientId + ComponentUtils.SUB_SEPARATOR + "unselected";
    writer.writeIdAttribute(unselectedClientId);
    writer.writeAttribute(HtmlAttributes.DISABLED, disabled);
    writer.writeAttribute(HtmlAttributes.READONLY, readonly);

    // TODO tabIndex
    writer.writeAttribute(HtmlAttributes.TABINDEX, component.getTabIndex());

    writer.writeClassAttribute(
        TobagoClass.UNSELECTED,
        BootstrapClass.FORM_SELECT,
        markup.contains(Markup.LARGE) ? BootstrapClass.FORM_SELECT_LG : null,
        markup.contains(Markup.SMALL) ? BootstrapClass.FORM_SELECT_SM : null);

    writer.writeAttribute(HtmlAttributes.MULTIPLE, true);
    writer.writeAttribute(HtmlAttributes.SIZE, size);

    final Object[] values = component.getSelectedValues();
    final String[] submittedValues = getSubmittedValues(component);
    renderSelectItems(component, null, items, values, submittedValues, false, writer, facesContext);

    writer.endElement(HtmlElements.SELECT);
    writer.startElement(HtmlElements.DIV);
    writer.startElement(HtmlElements.DIV);
    writer.writeClassAttribute(BootstrapClass.BTN_GROUP_VERTICAL);
    createButton(facesContext, component, writer, disabled | readonly, Icons.CHEVRON_DOUBLE_RIGHT, "addAll");
    createButton(facesContext, component, writer, disabled | readonly, Icons.CHEVRON_RIGHT, "add");
    createButton(facesContext, component, writer, disabled | readonly, Icons.CHEVRON_LEFT, "remove");
    createButton(facesContext, component, writer, disabled | readonly, Icons.CHEVRON_DOUBLE_LEFT, "removeAll");
    writer.endElement(HtmlElements.DIV);
    writer.endElement(HtmlElements.DIV);
    final String selectedLabel = component.getSelectedLabel();
    if (selectedLabel != null) {
      writer.startElement(HtmlElements.DIV);
      writer.write(selectedLabel);
      writer.endElement(HtmlElements.DIV);
    }

    writer.startElement(HtmlElements.SELECT);
    final String selectedClientId = clientId + ComponentUtils.SUB_SEPARATOR + "selected";
    writer.writeIdAttribute(selectedClientId);

    writer.writeAttribute(HtmlAttributes.DISABLED, disabled);
    writer.writeAttribute(HtmlAttributes.READONLY, readonly);
    writer.writeAttribute(HtmlAttributes.TABINDEX, component.getTabIndex());
    writer.writeClassAttribute(
        TobagoClass.SELECTED,
        BootstrapClass.validationColor(ComponentUtils.getMaximumSeverity(component)),
        BootstrapClass.FORM_SELECT,
        markup.contains(Markup.LARGE) ? BootstrapClass.FORM_SELECT_LG : null,
        markup.contains(Markup.SMALL) ? BootstrapClass.FORM_SELECT_SM : null);
    writer.writeAttribute(HtmlAttributes.MULTIPLE, true);
    writer.writeAttribute(HtmlAttributes.SIZE, size);
    renderSelectItems(component, null, items, values, submittedValues, true, writer, facesContext);

    writer.endElement(HtmlElements.SELECT);
    writer.startElement(HtmlElements.SELECT);
    writer.writeClassAttribute(BootstrapClass.D_NONE);
    final String hiddenClientId = clientId + ComponentUtils.SUB_SEPARATOR + "hidden";
    writer.writeIdAttribute(hiddenClientId);
    writer.writeNameAttribute(clientId);
    writer.writeAttribute(HtmlAttributes.MULTIPLE, true);
    writer.writeAttribute(HtmlAttributes.REQUIRED, component.isRequired());
    renderSelectItems(component, null, items, values, submittedValues, writer, facesContext);
    writer.endElement(HtmlElements.SELECT);
  }