public function docmanwatermark_toggle_item()
 {
     $itemId = $this->_controler->request->getValidated('item_id', 'UInt');
     if ($itemId != null && $this->_controler->userCanManage($itemId) && $this->_controler->request->isPost()) {
         $itemFactory = new Docman_ItemFactory();
         $dwItemFactory = new DocmanWatermark_ItemFactory();
         $dwLog = new DocmanWatermark_Log();
         $item = $itemFactory->getItemFromDb($itemId);
         $user = $this->_controler->getUser();
         if ($this->_controler->request->existAndNonEmpty('disable_watermarking')) {
             if ($dwItemFactory->disableWatermarking($itemId)) {
                 $dwLog->disableWatermarking($item, $user);
                 $dwItemFactory->notifyOnDisable($item, $user, $this->_controler->getDefaultUrl());
                 $GLOBALS['Response']->addFeedback('info', $GLOBALS['Language']->getText('plugin_docmanwatermark', 'action_watermarking_disabled'));
             } else {
                 $GLOBALS['Response']->addFeedback('error', $GLOBALS['Language']->getText('plugin_docmanwatermark', 'action_watermarking_disable_error'));
             }
         } else {
             if ($dwItemFactory->enableWatermarking($itemId)) {
                 $dwLog->enableWatermarking($item, $user);
                 $GLOBALS['Response']->addFeedback('info', $GLOBALS['Language']->getText('plugin_docmanwatermark', 'action_watermarking_enabled'));
             } else {
                 $GLOBALS['Response']->addFeedback('error', $GLOBALS['Language']->getText('plugin_docmanwatermark', 'action_watermarking_enable_error'));
             }
         }
         $this->_controler->view = 'RedirectAfterCrud';
         $this->_controler->_viewParams['redirect_to'] = $this->_controler->getDefaultUrl() . '&action=details&id=' . $itemId . '&section=watermarking';
     } else {
         // Bad Item Id or attempt to fake the server, redirect to root
         // @todo: log those kind of attempt.
         $this->_controler->view = 'RedirectAfterCrud';
         $this->_controler->_viewParams['redirect_to'] = $this->_controler->getDefaultUrl();
     }
 }