private void encodeHeader()

in tobago-core/src/main/java/org/apache/myfaces/tobago/internal/renderkit/renderer/TabGroupRenderer.java [204:316]
102 lines of code
21 McCabe index (conditional complexity)

  private void encodeHeader(
      final FacesContext facesContext, final TobagoResponseWriter writer, final AbstractUITabGroup tabGroup,
      final int selectedIndex, final SwitchType switchType)
      throws IOException {

    final String tabGroupClientId = tabGroup.getClientId(facesContext);

    writer.startElement(HtmlElements.DIV);
    writer.writeClassAttribute(BootstrapClass.CARD_HEADER);
    writer.startElement(HtmlElements.UL);
    writer.writeClassAttribute(
        BootstrapClass.NAV,
        BootstrapClass.NAV_TABS,
        BootstrapClass.CARD_HEADER_TABS);
    writer.writeAttribute(HtmlAttributes.ROLE, HtmlRoleValues.TABLIST.toString(), false);

    int index = 0;
    for (final UIComponent child : tabGroup.getChildren()) {
      if (child instanceof AbstractUITab) {
        final AbstractUITab tab = (AbstractUITab) child;
        if (tab.isRendered()) {
          final LabelWithAccessKey label = new LabelWithAccessKey(tab);
          final UIComponent labelFacet = ComponentUtils.getFacet(tab, Facets.label);
          final UIComponent barFacet = ComponentUtils.getFacet(tab, Facets.bar);
          final boolean disabled = tab.isDisabled();
          final String tabId = tab.getClientId(facesContext);
          Markup markup = tab.getMarkup() != null ? tab.getMarkup() : Markup.NULL;

          final FacesMessage.Severity maxSeverity
              = ComponentUtils.getMaximumSeverityOfChildrenMessages(facesContext, tab);
          if (maxSeverity != null) {
            markup = markup.add(ComponentUtils.markupOfSeverity(maxSeverity));
          }

          writer.startElement(HtmlElements.TOBAGO_TAB);
          writer.writeIdAttribute(tabId);
          writer.writeClassAttribute(
              BootstrapClass.NAV_ITEM,
              barFacet != null ? TobagoClass.BAR : null,
              tab.getCustomClass());
          writer.writeAttribute(HtmlAttributes.FOR, tabGroupClientId, true);
          writer.writeAttribute(HtmlAttributes.ROLE, HtmlRoleValues.PRESENTATION.toString(), false);
          writer.writeAttribute(CustomAttributes.INDEX, index);
          final String title = HtmlRendererUtils.getTitleFromTipAndMessages(facesContext, tab);
          if (title != null) {
            writer.writeAttribute(HtmlAttributes.TITLE, title, true);
          }

          writer.startElement(HtmlElements.A);
          if (!tab.isDisabled()) {
            writer.writeAttribute(DataAttributes.TOGGLE, "tab", false);
          }
          if (tab.isDisabled()) {
            writer.writeClassAttribute(BootstrapClass.NAV_LINK, BootstrapClass.DISABLED);
          } else if (selectedIndex == index) {
            writer.writeClassAttribute(BootstrapClass.NAV_LINK, BootstrapClass.ACTIVE);
          } else {
            writer.writeClassAttribute(BootstrapClass.NAV_LINK);
          }
          if (!disabled && switchType == SwitchType.client) {
            writer.writeAttribute(
                DataAttributes.TARGET, '#' + getTabPanelId(facesContext, tab).replaceAll(":", "\\\\:"), false);
          }

          if (!disabled && label.getAccessKey() != null) {
            writer.writeAttribute(HtmlAttributes.ACCESSKEY, Character.toString(label.getAccessKey()), false);
            AccessKeyLogger.addAccessKey(facesContext, label.getAccessKey(), tabId);
          }
          writer.writeAttribute(HtmlAttributes.ROLE, HtmlRoleValues.TAB.toString(), false);

          if (!disabled) {
            encodeBehavior(writer, facesContext, tab);
          }

          boolean labelEmpty = true;
          final String image = tab.getImage();
          if (image != null) {
            HtmlRendererUtils.encodeIconOrImage(writer, image);
            labelEmpty = false;
          }
          if (label.getLabel() != null) {
            writer.startElement(HtmlElements.SPAN);
            HtmlRendererUtils.writeLabelWithAccessKey(writer, label);
            writer.endElement(HtmlElements.SPAN);
            labelEmpty = false;
          }
          if (labelFacet != null) {
            insideBegin(facesContext, Facets.label);
            labelFacet.encodeAll(facesContext);
            insideEnd(facesContext, Facets.label);
            labelEmpty = false;
          }
          if (labelEmpty) {
            writer.writeText(Integer.toString(index + 1));
          }
          writer.endElement(HtmlElements.A);

          if (barFacet != null) {
            insideBegin(facesContext, Facets.bar);
            writer.startElement(HtmlElements.DIV);
            barFacet.encodeAll(facesContext);
            writer.endElement(HtmlElements.DIV);
            insideEnd(facesContext, Facets.bar);
          }

          writer.endElement(HtmlElements.TOBAGO_TAB);
        }
        index++;
      }
    }
    writer.endElement(HtmlElements.UL);
    writer.endElement(HtmlElements.DIV);
  }