/**
  * Grabs all new notifications and adds them to the sender's inform queue.
  *
  * This method gets called by dashboard's hooks file to display new
  * notifications on every pageload. 
  *
  * @since 2.0.18
  * @access public
  *
  * @param Gdn_Controller $Sender The object calling this method.
  */
 public static function InformNotifications($Sender)
 {
     $Session = Gdn::Session();
     if (!$Session->IsValid()) {
         return;
     }
     $ActivityModel = new ActivityModel();
     // Get five pending notifications.
     $Where = array('NotifyUserID' => Gdn::Session()->UserID, 'Notified' => ActivityModel::SENT_PENDING);
     // If we're in the middle of a visit only get very recent notifications.
     $Where['DateUpdated >'] = Gdn_Format::ToDateTime(strtotime('-5 minutes'));
     $Activities = $ActivityModel->GetWhere($Where, 0, 5)->ResultArray();
     $ActivityIDs = ConsolidateArrayValuesByKey($Activities, 'ActivityID');
     $ActivityModel->SetNotified($ActivityIDs);
     $Sender->EventArguments['Activities'] =& $Activities;
     $Sender->FireEvent('InformNotifications');
     foreach ($Activities as $Activity) {
         if ($Activity['Photo']) {
             $UserPhoto = Anchor(Img($Activity['Photo'], array('class' => 'ProfilePhotoMedium')), $Activity['Url'], 'Icon');
         } else {
             $UserPhoto = '';
         }
         $Excerpt = Gdn_Format::Display($Activity['Story']);
         $ActivityClass = ' Activity-' . $Activity['ActivityType'];
         $Sender->InformMessage($UserPhoto . Wrap($Activity['Headline'], 'div', array('class' => 'Title')) . Wrap($Excerpt, 'div', array('class' => 'Excerpt')), 'Dismissable AutoDismiss' . $ActivityClass . ($UserPhoto == '' ? '' : ' HasIcon'));
     }
 }