public SelectItem next()

in tobago-core/src/main/java/org/apache/myfaces/tobago/internal/renderkit/renderer/SelectManyRendererBase.java [629:704]
59 lines of code
13 McCabe index (conditional complexity)

    public SelectItem next() {
      if (!hasNext()) {
        throw new NoSuchElementException();
      }
      if (nextItem != null) {
        final SelectItem value = nextItem;
        nextItem = null;
        return value;
      }
      if (nestedItems != null) {
        Object item = nestedItems.next();

        if (!(item instanceof SelectItem)) {
          // check new params of SelectItems (since 2.0): itemValue, itemLabel, itemDescription,...
          // Note that according to the spec UISelectItems does not provide Getter and Setter
          // methods for this values, so we have to use the attribute map
          final Map<String, Object> attributeMap = currentUISelectItems.getAttributes();

          // write the current item into the request map under the key listed in var, if available
          boolean wroteRequestMapVarValue = false;
          Object oldRequestMapVarValue = null;
          final String var = (String) attributeMap.get(VAR_ATTR);
          if (var != null && !"".equals(var)) {
            // save the current value of the key listed in var from the request map
            oldRequestMapVarValue = facesContext.getExternalContext().getRequestMap().put(var, item);
            wroteRequestMapVarValue = true;
          }

          // check the itemValue attribute
          Object itemValue = attributeMap.get(ITEM_VALUE_ATTR);
          if (itemValue == null) {
            // the itemValue attribute was not provided
            // --> use the current item as the itemValue
            itemValue = item;
          }

          // Spec: When iterating over the select items, toString()
          // must be called on the string rendered attribute values
          Object itemLabel = attributeMap.get(ITEM_LABEL_ATTR);
          if (itemLabel == null) {
            if (itemValue != null) {
              itemLabel = itemValue.toString();
            }
          } else {
            itemLabel = itemLabel.toString();
          }
          Object itemDescription = attributeMap.get(ITEM_DESCRIPTION_ATTR);
          if (itemDescription != null) {
            itemDescription = itemDescription.toString();
          }
          final Boolean itemDisabled = getBooleanAttribute(currentUISelectItems, ITEM_DISABLED_ATTR, false);
          final Boolean itemLabelEscaped = getBooleanAttribute(currentUISelectItems, ITEM_LABEL_ESCAPED_ATTR, true);
          final Object noSelectionValue = attributeMap.get(NO_SELECTION_VALUE_ATTR);
          item = new SelectItem(itemValue,
              (String) itemLabel,
              (String) itemDescription,
              itemDisabled,
              itemLabelEscaped,
              itemValue.equals(noSelectionValue));

          // remove the value with the key from var from the request map, if previously written
          if (wroteRequestMapVarValue) {
            // If there was a previous value stored with the key from var in the request map, restore it
            if (oldRequestMapVarValue != null) {
              facesContext.getExternalContext()
                  .getRequestMap().put(var, oldRequestMapVarValue);
            } else {
              facesContext.getExternalContext()
                  .getRequestMap().remove(var);
            }
          }
        }
        return (SelectItem) item;
      }
      throw new NoSuchElementException();
    }