/**
  * wrapper for ajax activity selector.
  *
  * @param array $params
  *   Associated array for params record id.
  *
  * @return array
  *   associated array of contact activities
  */
 public static function getContactMailingSelector(&$params)
 {
     // format the params
     $params['offset'] = ($params['page'] - 1) * $params['rp'];
     $params['rowCount'] = $params['rp'];
     $params['sort'] = CRM_Utils_Array::value('sortBy', $params);
     $params['caseId'] = NULL;
     // get contact mailings
     $mailings = CRM_Mailing_BAO_Mailing::getContactMailings($params);
     // add total
     $params['total'] = CRM_Mailing_BAO_Mailing::getContactMailingsCount($params);
     //CRM-12814
     if (!empty($mailings)) {
         $openCounts = CRM_Mailing_Event_BAO_Opened::getMailingContactCount(array_keys($mailings), $params['contact_id']);
         $clickCounts = CRM_Mailing_Event_BAO_TrackableURLOpen::getMailingContactCount(array_keys($mailings), $params['contact_id']);
     }
     // format params and add links
     $contactMailings = array();
     foreach ($mailings as $mailingId => $values) {
         $mailing = array();
         $mailing['subject'] = $values['subject'];
         $mailing['creator_name'] = CRM_Utils_System::href($values['creator_name'], 'civicrm/contact/view', "reset=1&cid={$values['creator_id']}");
         $mailing['recipients'] = CRM_Utils_System::href(ts('(recipients)'), 'civicrm/mailing/report/event', "mid={$values['mailing_id']}&reset=1&cid={$params['contact_id']}&event=queue&context=mailing");
         $mailing['start_date'] = CRM_Utils_Date::customFormat($values['start_date']);
         //CRM-12814
         $mailing['openstats'] = "Opens: " . CRM_Utils_Array::value($values['mailing_id'], $openCounts, 0) . "<br />Clicks: " . CRM_Utils_Array::value($values['mailing_id'], $clickCounts, 0);
         $actionLinks = array(CRM_Core_Action::VIEW => array('name' => ts('View'), 'url' => 'civicrm/mailing/view', 'qs' => "reset=1&id=%%mkey%%", 'title' => ts('View Mailing'), 'class' => 'crm-popup'), CRM_Core_Action::BROWSE => array('name' => ts('Mailing Report'), 'url' => 'civicrm/mailing/report', 'qs' => "mid=%%mid%%&reset=1&cid=%%cid%%&context=mailing", 'title' => ts('View Mailing Report')));
         $mailingKey = $values['mailing_id'];
         if ($hash = CRM_Mailing_BAO_Mailing::getMailingHash($mailingKey)) {
             $mailingKey = $hash;
         }
         $mailing['links'] = CRM_Core_Action::formLink($actionLinks, NULL, array('mid' => $values['mailing_id'], 'cid' => $params['contact_id'], 'mkey' => $mailingKey), ts('more'), FALSE, 'mailing.contact.action', 'Mailing', $values['mailing_id']);
         array_push($contactMailings, $mailing);
     }
     $contactMailingsDT = array();
     $contactMailingsDT['data'] = $contactMailings;
     $contactMailingsDT['recordsTotal'] = $params['total'];
     $contactMailingsDT['recordsFiltered'] = $params['total'];
     return $contactMailingsDT;
 }