/**
  * Save module settings
  * 
  * @param string $module module name
  */
 private static function saveSettings($module)
 {
     if ($doc = Uni_Fox::loadModuleSetting($module)) {
         $xPath = new DOMXPath($doc);
         $items = $xPath->query('/settings/items/item');
         if ($items->length) {
             $preferenceModel = Fox::getModel('core/preference');
             foreach ($items as $item) {
                 $itemName = $item->getAttribute('name');
                 if ($item->childNodes->length) {
                     foreach ($item->childNodes as $sections) {
                         if ($sections->nodeName == 'sections') {
                             foreach ($sections->childNodes as $section) {
                                 if ($section->nodeName == 'section') {
                                     $sectionName = $section->getAttribute('name');
                                     foreach ($section->childNodes as $field) {
                                         if ($field->nodeName == 'field') {
                                             $fieldName = $field->getAttribute('name');
                                             foreach ($field->childNodes as $defaultNode) {
                                                 if ($defaultNode->nodeName == 'default') {
                                                     try {
                                                         $preferenceModel->load($itemName . '/' . $sectionName . '/' . $fieldName, 'name');
                                                         $preferenceModel->setName($itemName . '/' . $sectionName . '/' . $fieldName);
                                                         $preferenceModel->setValue($defaultNode->nodeValue);
                                                         $preferenceModel->save();
                                                         $preferenceModel->unsetData();
                                                     } catch (Exception $e) {
                                                         Fox::getModel('core/session')->addError($e->getMessage());
                                                     }
                                                 }
                                             }
                                         }
                                     }
                                 }
                             }
                         }
                     }
                 }
             }
         }
     }
 }