public function index()
 {
     JSMessages::enqueuePackage('Wall', JSMessages::EXTERNAL);
     $title = $this->getContext()->getTitle();
     $this->isThreadLevel = $this->request->getVal('threadLevelHistory', false);
     $path = array();
     if ($this->isThreadLevel) {
         $threadId = intval($title->getDBkey());
         $title = Title::newFromId($threadId);
     }
     $this->historyPreExecute();
     $page = $this->request->getVal('page', 1);
     $page = ($page = intval($page)) === 0 ? 1 : $page;
     $this->response->setVal('sortingOptions', $this->getSortingOptions());
     $this->response->setVal('sortingSelected', $this->getSortingSelectedText());
     $this->response->setVal('wallHistoryMsg', $this->getHistoryMessagesArray());
     $this->response->setVal('currentPage', $page);
     $this->response->setVal('isThreadLevelHistory', $this->isThreadLevel);
     if (!$title instanceof Title || $this->isThreadLevel && !in_array(MWNamespace::getSubject($title->getNamespace()), $this->wg->WallNS)) {
         // paranoia -- why the message is not in DB
         $this->response->setVal('wallmessageNotFound', true);
         return;
     }
     if ($this->isThreadLevel) {
         $wallMessage = new WallMessage($title);
         $wallMessage->load();
         $perPage = 50;
         $wallHistory = new WallHistory();
         $wallHistory->setPage($page, $perPage);
         $count = $wallHistory->getCount(null, $threadId);
         $sort = $this->getSortingSelected();
         $history = $wallHistory->get(null, $sort, $threadId);
         $this->response->setVal('wallHistory', $this->getFormatedHistoryData($history, $threadId));
         $path[] = array('title' => $wallMessage->getMetatitle(), 'url' => $wallMessage->getMessagePageUrl());
         $wallUrl = $wallMessage->getArticleTitle()->getFullUrl();
         $wallOwnerName = $wallMessage->getArticleTitle()->getText();
         $this->response->setVal('wallHistoryUrl', $wallMessage->getMessagePageUrl(true) . '?action=history&sort=' . $sort);
     } else {
         $perPage = 100;
         $wallHistory = new WallHistory();
         $wallHistory->setPage($page, $perPage);
         $sort = $this->getSortingSelected();
         if ($title->exists()) {
             $count = $wallHistory->getCount($title->getArticleId(), null, false);
             $history = $wallHistory->get($title->getArticleId(), $sort, null, false);
         } else {
             $count = 0;
             $history = array();
         }
         $wallUrl = $title->getFullUrl();
         $wallOwnerName = $title->getText();
         $this->response->setVal('wallHistory', $this->getFormatedHistoryData($history));
         $this->response->setVal('wallHistoryUrl', $title->getFullURL(array('action' => 'history', 'sort' => $sort)));
     }
     $path = array_merge(array(array('title' => wfMessage('wall-message-elseswall', array($wallOwnerName))->escaped(), 'url' => $wallUrl)), $path);
     $this->response->setVal('wallOwnerName', $wallOwnerName);
     if ($this->isThreadLevel) {
         $this->response->setVal('pageTitle', wfMessage('wall-thread-history-title')->escaped());
         wfRunHooks('WallHistoryThreadHeader', array($title, $wallMessage, &$path, &$this->response, &$this->request));
     } else {
         $this->response->setVal('pageTitle', wfMessage('wall-history-title')->escaped());
         wfRunHooks('WallHistoryHeader', array($title, &$path, &$this->response, &$this->request));
     }
     $this->response->setVal('path', $path);
     $this->response->setVal('totalItems', $count);
     $this->response->setVal('itemsPerPage', $perPage);
     $this->response->setVal('showPager', $count > $perPage);
 }