/**
  * Returns a row from the history printout.
  *
  * @todo document some more, and maybe clean up the code (some params redundant?)
  *
  * @param $row Object: the database row corresponding to the previous line.
  * @param $next Mixed: the database row corresponding to the next line.
  * @param $notificationtimestamp
  * @param $latest Boolean: whether this row corresponds to the page's latest revision.
  * @param $firstInList Boolean: whether this row corresponds to the first displayed on this history page.
  * @return String: HTML output for the row
  */
 function historyLine($row, $next, $notificationtimestamp = false, $latest = false, $firstInList = false)
 {
     global $wgUser, $wgLang;
     $rev = new Revision($row);
     $rev->setTitle($this->title);
     $curlink = $this->curLink($rev, $latest);
     $lastlink = $this->lastLink($rev, $next);
     $diffButtons = $this->diffButtons($rev, $firstInList);
     $histLinks = Html::rawElement('span', array('class' => 'mw-history-histlinks'), '(' . $curlink . $this->historyPage->message['pipe-separator'] . $lastlink . ') ');
     $s = $histLinks . $diffButtons;
     $link = $this->revLink($rev);
     $classes = array();
     $del = '';
     // Show checkboxes for each revision
     if ($wgUser->isAllowed('deleterevision')) {
         $this->preventClickjacking();
         // If revision was hidden from sysops, disable the checkbox
         if (!$rev->userCan(Revision::DELETED_RESTRICTED)) {
             $del = Xml::check('deleterevisions', false, array('disabled' => 'disabled'));
             // Otherwise, enable the checkbox...
         } else {
             $del = Xml::check('showhiderevisions', false, array('name' => 'ids[' . $rev->getId() . ']'));
         }
         // User can only view deleted revisions...
     } else {
         if ($rev->getVisibility() && $wgUser->isAllowed('deletedhistory')) {
             // If revision was hidden from sysops, disable the link
             if (!$rev->userCan(Revision::DELETED_RESTRICTED)) {
                 $cdel = $this->getSkin()->revDeleteLinkDisabled(false);
                 // Otherwise, show the link...
             } else {
                 $query = array('type' => 'revision', 'target' => $this->title->getPrefixedDbkey(), 'ids' => $rev->getId());
                 $del .= $this->getSkin()->revDeleteLink($query, $rev->isDeleted(Revision::DELETED_RESTRICTED), false);
             }
         }
     }
     if ($del) {
         $s .= " {$del} ";
     }
     $s .= " {$link}";
     $s .= " <span class='history-user'>" . $this->getSkin()->revUserTools($rev, true) . "</span>";
     if ($rev->isMinor()) {
         $s .= ' ' . ChangesList::flag('minor');
     }
     if (!is_null($size = $rev->getSize()) && !$rev->isDeleted(Revision::DELETED_TEXT)) {
         $s .= ' ' . $this->getSkin()->formatRevisionSize($size);
     }
     $s .= $this->getSkin()->revComment($rev, false, true);
     if ($notificationtimestamp && $row->rev_timestamp >= $notificationtimestamp) {
         $s .= ' <span class="updatedmarker">' . wfMsgHtml('updatedmarker') . '</span>';
     }
     $tools = array();
     # Rollback and undo links
     if (!is_null($next) && is_object($next)) {
         if ($latest && $this->title->userCan('rollback') && $this->title->userCan('edit')) {
             $this->preventClickjacking();
             $tools[] = '<span class="mw-rollback-link">' . $this->getSkin()->buildRollbackLink($rev) . '</span>';
         }
         if ($this->title->quickUserCan('edit') && !$rev->isDeleted(Revision::DELETED_TEXT) && !$next->rev_deleted & Revision::DELETED_TEXT) {
             # Create undo tooltip for the first (=latest) line only
             $undoTooltip = $latest ? array('title' => wfMsg('tooltip-undo')) : array();
             $undolink = $this->getSkin()->link($this->title, wfMsgHtml('editundo'), $undoTooltip, array('action' => 'edit', 'undoafter' => $next->rev_id, 'undo' => $rev->getId()), array('known', 'noclasses'));
             $tools[] = "<span class=\"mw-history-undo\">{$undolink}</span>";
         }
     }
     if ($tools) {
         $s .= ' (' . $wgLang->pipeList($tools) . ')';
     }
     # Tags
     list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow($row->ts_tags, 'history');
     $classes = array_merge($classes, $newClasses);
     $s .= " {$tagSummary}";
     wfRunHooks('PageHistoryLineEnding', array($this, &$row, &$s, &$classes));
     $attribs = array();
     if ($classes) {
         $attribs['class'] = implode(' ', $classes);
     }
     return Xml::tags('li', $attribs, $s) . "\n";
 }

//.........这里部分代码省略.........
            // Build the link
            if ($rcid) {
                $wgOut->preventClickjacking();
                $token = $wgUser->editToken($rcid);
                $patrol = ' <span class="patrollink">[' . $sk->link($this->mTitle, wfMsgHtml('markaspatrolleddiff'), array(), array('action' => 'markpatrolled', 'rcid' => $rcid, 'token' => $token), array('known', 'noclasses')) . ']</span>';
            } else {
                $patrol = '';
            }
        } else {
            $patrol = '';
        }
        # Carry over 'diffonly' param via navigation links
        if ($diffOnly != $wgUser->getBoolOption('diffonly')) {
            $query['diffonly'] = $diffOnly;
        }
        # Make "previous revision link"
        $query['diff'] = 'prev';
        $query['oldid'] = $this->mOldid;
        # Cascade unhide param in links for easy deletion browsing
        if ($this->unhide) {
            $query['unhide'] = 1;
        }
        if (!$this->mOldRev->getPrevious()) {
            $prevlink = '&#160;';
        } else {
            $prevlink = $sk->link($this->mTitle, wfMsgHtml('previousdiff'), array('id' => 'differences-prevlink'), $query, array('known', 'noclasses'));
        }
        # Make "next revision link"
        $query['diff'] = 'next';
        $query['oldid'] = $this->mNewid;
        # Skip next link on the top revision
        if ($this->mNewRev->isCurrent()) {
            $nextlink = '&#160;';
        } else {
            $nextlink = $sk->link($this->mTitle, wfMsgHtml('nextdiff'), array('id' => 'differences-nextlink'), $query, array('known', 'noclasses'));
        }
        $oldminor = '';
        $newminor = '';
        if ($this->mOldRev->isMinor()) {
            $oldminor = ChangesList::flag('minor');
        }
        if ($this->mNewRev->isMinor()) {
            $newminor = ChangesList::flag('minor');
        }
        # Handle RevisionDelete links...
        $ldel = $this->revisionDeleteLink($this->mOldRev);
        $rdel = $this->revisionDeleteLink($this->mNewRev);
        $oldHeader = '<div id="mw-diff-otitle1"><strong>' . $this->mOldtitle . '</strong></div>' . '<div id="mw-diff-otitle2">' . $sk->revUserTools($this->mOldRev, !$this->unhide) . '</div>' . '<div id="mw-diff-otitle3">' . $oldminor . $sk->revComment($this->mOldRev, !$diffOnly, !$this->unhide) . $ldel . '</div>' . '<div id="mw-diff-otitle4">' . $prevlink . '</div>';
        $newHeader = '<div id="mw-diff-ntitle1"><strong>' . $this->mNewtitle . '</strong></div>' . '<div id="mw-diff-ntitle2">' . $sk->revUserTools($this->mNewRev, !$this->unhide) . " {$rollback}</div>" . '<div id="mw-diff-ntitle3">' . $newminor . $sk->revComment($this->mNewRev, !$diffOnly, !$this->unhide) . $rdel . '</div>' . '<div id="mw-diff-ntitle4">' . $nextlink . $patrol . '</div>';
        # Check if this user can see the revisions
        $allowed = $this->mOldRev->userCan(Revision::DELETED_TEXT) && $this->mNewRev->userCan(Revision::DELETED_TEXT);
        # Check if one of the revisions is deleted/suppressed
        $deleted = $suppressed = false;
        if ($this->mOldRev->isDeleted(Revision::DELETED_TEXT)) {
            $deleted = true;
            // old revisions text is hidden
            if ($this->mOldRev->isDeleted(Revision::DELETED_RESTRICTED)) {
                $suppressed = true;
            }
            // also suppressed
        }
        if ($this->mNewRev->isDeleted(Revision::DELETED_TEXT)) {
            $deleted = true;
            // new revisions text is hidden
            if ($this->mNewRev->isDeleted(Revision::DELETED_RESTRICTED)) {
                $suppressed = true;
            }
            // also suppressed
        }
        # If the diff cannot be shown due to a deleted revision, then output
        # the diff header and links to unhide (if available)...
        if ($deleted && (!$this->unhide || !$allowed)) {
            $this->showDiffStyle();
            $multi = $this->getMultiNotice();
            $wgOut->addHTML($this->addHeader('', $oldHeader, $newHeader, $multi));
            if (!$allowed) {
                $msg = $suppressed ? 'rev-suppressed-no-diff' : 'rev-deleted-no-diff';
                # Give explanation for why revision is not visible
                $wgOut->wrapWikiMsg("<div id='mw-{$msg}' class='mw-warning plainlinks'>\n\$1\n</div>\n", array($msg));
            } else {
                # Give explanation and add a link to view the diff...
                $link = $this->mTitle->getFullUrl(array('diff' => $this->mNewid, 'oldid' => $this->mOldid, 'unhide' => 1));
                $msg = $suppressed ? 'rev-suppressed-unhide-diff' : 'rev-deleted-unhide-diff';
                $wgOut->wrapWikiMsg("<div id='mw-{$msg}' class='mw-warning plainlinks'>\n\$1\n</div>\n", array($msg, $link));
            }
            # Otherwise, output a regular diff...
        } else {
            # Add deletion notice if the user is viewing deleted content
            $notice = '';
            if ($deleted) {
                $msg = $suppressed ? 'rev-suppressed-diff-view' : 'rev-deleted-diff-view';
                $notice = "<div id='mw-{$msg}' class='mw-warning plainlinks'>\n" . wfMsgExt($msg, 'parseinline') . "</div>\n";
            }
            $this->showDiff($oldHeader, $newHeader, $notice);
            if (!$diffOnly) {
                $this->renderNewRevision();
            }
        }
        wfProfileOut(__METHOD__);
    }

 /**
  * Returns the change size (HTML).
  * The lengths can be given optionally.
  */
 public function getCharacterDifference($old = 0, $new = 0)
 {
     if ($old === 0) {
         $old = $this->mAttribs['rc_old_len'];
     }
     if ($new === 0) {
         $new = $this->mAttribs['rc_new_len'];
     }
     if ($old === null || $new === null) {
         return '';
     }
     return ChangesList::showCharacterDifference($old, $new);
 }

 /**
  * Build and output the actual changes list.
  *
  * @param array $rows Database rows
  * @param FormOptions $opts
  */
 public function outputChangesList($rows, $opts)
 {
     $limit = $opts['limit'];
     $showWatcherCount = $this->getConfig()->get('RCShowWatchingUsers') && $this->getUser()->getOption('shownumberswatching');
     $watcherCache = array();
     $dbr = $this->getDB();
     $counter = 1;
     $list = ChangesList::newFromContext($this->getContext());
     $list->initChangesListRows($rows);
     $rclistOutput = $list->beginRecentChangesList();
     foreach ($rows as $obj) {
         if ($limit == 0) {
             break;
         }
         $rc = RecentChange::newFromRow($obj);
         $rc->counter = $counter++;
         # Check if the page has been updated since the last visit
         if ($this->getConfig()->get('ShowUpdatedMarker') && !empty($obj->wl_notificationtimestamp)) {
             $rc->notificationtimestamp = $obj->rc_timestamp >= $obj->wl_notificationtimestamp;
         } else {
             $rc->notificationtimestamp = false;
             // Default
         }
         # Check the number of users watching the page
         $rc->numberofWatchingusers = 0;
         // Default
         if ($showWatcherCount && $obj->rc_namespace >= 0) {
             if (!isset($watcherCache[$obj->rc_namespace][$obj->rc_title])) {
                 $watcherCache[$obj->rc_namespace][$obj->rc_title] = $dbr->selectField('watchlist', 'COUNT(*)', array('wl_namespace' => $obj->rc_namespace, 'wl_title' => $obj->rc_title), __METHOD__ . '-watchers');
             }
             $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
         }
         $changeLine = $list->recentChangesLine($rc, !empty($obj->wl_user), $counter);
         if ($changeLine !== false) {
             $rclistOutput .= $changeLine;
             --$limit;
         }
     }
     $rclistOutput .= $list->endRecentChangesList();
     if ($rows->numRows() === 0) {
         $this->getOutput()->addHtml('<div class="mw-changeslist-empty">' . $this->msg('recentchanges-noresult')->parse() . '</div>');
         if (!$this->including()) {
             $this->getOutput()->setStatusCode(404);
         }
     } else {
         $this->getOutput()->addHTML($rclistOutput);
     }
 }

 public function showDiffPage($diffOnly = false)
 {
     # Allow frames except in certain special cases
     $out = $this->getOutput();
     $out->allowClickjacking();
     $out->setRobotPolicy('noindex,nofollow');
     if (!$this->loadRevisionData()) {
         $this->showMissingRevision();
         return;
     }
     $user = $this->getUser();
     $permErrors = $this->mNewPage->getUserPermissionsErrors('read', $user);
     if ($this->mOldPage) {
         # mOldPage might not be set, see below.
         $permErrors = wfMergeErrorArrays($permErrors, $this->mOldPage->getUserPermissionsErrors('read', $user));
     }
     if (count($permErrors)) {
         throw new PermissionsError('read', $permErrors);
     }
     $rollback = '';
     $query = array();
     # Carry over 'diffonly' param via navigation links
     if ($diffOnly != $user->getBoolOption('diffonly')) {
         $query['diffonly'] = $diffOnly;
     }
     # Cascade unhide param in links for easy deletion browsing
     if ($this->unhide) {
         $query['unhide'] = 1;
     }
     # Check if one of the revisions is deleted/suppressed
     $deleted = $suppressed = false;
     $allowed = $this->mNewRev->userCan(Revision::DELETED_TEXT, $user);
     $revisionTools = array();
     # mOldRev is false if the difference engine is called with a "vague" query for
     # a diff between a version V and its previous version V' AND the version V
     # is the first version of that article. In that case, V' does not exist.
     if ($this->mOldRev === false) {
         $out->setPageTitle($this->msg('difference-title', $this->mNewPage->getPrefixedText()));
         $samePage = true;
         $oldHeader = '';
     } else {
         Hooks::run('DiffViewHeader', array($this, $this->mOldRev, $this->mNewRev));
         if ($this->mNewPage->equals($this->mOldPage)) {
             $out->setPageTitle($this->msg('difference-title', $this->mNewPage->getPrefixedText()));
             $samePage = true;
         } else {
             $out->setPageTitle($this->msg('difference-title-multipage', $this->mOldPage->getPrefixedText(), $this->mNewPage->getPrefixedText()));
             $out->addSubtitle($this->msg('difference-multipage'));
             $samePage = false;
         }
         if ($samePage && $this->mNewPage->quickUserCan('edit', $user)) {
             if ($this->mNewRev->isCurrent() && $this->mNewPage->userCan('rollback', $user)) {
                 $rollbackLink = Linker::generateRollback($this->mNewRev, $this->getContext());
                 if ($rollbackLink) {
                     $out->preventClickjacking();
                     $rollback = '   ' . $rollbackLink;
                 }
             }
             if (!$this->mOldRev->isDeleted(Revision::DELETED_TEXT) && !$this->mNewRev->isDeleted(Revision::DELETED_TEXT)) {
                 $undoLink = Html::element('a', array('href' => $this->mNewPage->getLocalURL(array('action' => 'edit', 'undoafter' => $this->mOldid, 'undo' => $this->mNewid)), 'title' => Linker::titleAttrib('undo')), $this->msg('editundo')->text());
                 $revisionTools['mw-diff-undo'] = $undoLink;
             }
         }
         # Make "previous revision link"
         if ($samePage && $this->mOldRev->getPrevious()) {
             $prevlink = Linker::linkKnown($this->mOldPage, $this->msg('previousdiff')->escaped(), array('id' => 'differences-prevlink'), array('diff' => 'prev', 'oldid' => $this->mOldid) + $query);
         } else {
             $prevlink = ' ';
         }
         if ($this->mOldRev->isMinor()) {
             $oldminor = ChangesList::flag('minor');
         } else {
             $oldminor = '';
         }
         $ldel = $this->revisionDeleteLink($this->mOldRev);
         $oldRevisionHeader = $this->getRevisionHeader($this->mOldRev, 'complete');
         $oldChangeTags = ChangeTags::formatSummaryRow($this->mOldTags, 'diff');
         $oldHeader = '<div id="mw-diff-otitle1"><strong>' . $oldRevisionHeader . '</strong></div>' . '<div id="mw-diff-otitle2">' . Linker::revUserTools($this->mOldRev, !$this->unhide) . '</div>' . '<div id="mw-diff-otitle3">' . $oldminor . Linker::revComment($this->mOldRev, !$diffOnly, !$this->unhide) . $ldel . '</div>' . '<div id="mw-diff-otitle5">' . $oldChangeTags[0] . '</div>' . '<div id="mw-diff-otitle4">' . $prevlink . '</div>';
         if ($this->mOldRev->isDeleted(Revision::DELETED_TEXT)) {
             $deleted = true;
             // old revisions text is hidden
             if ($this->mOldRev->isDeleted(Revision::DELETED_RESTRICTED)) {
                 $suppressed = true;
                 // also suppressed
             }
         }
         # Check if this user can see the revisions
         if (!$this->mOldRev->userCan(Revision::DELETED_TEXT, $user)) {
             $allowed = false;
         }
     }
     # Make "next revision link"
     # Skip next link on the top revision
     if ($samePage && !$this->mNewRev->isCurrent()) {
         $nextlink = Linker::linkKnown($this->mNewPage, $this->msg('nextdiff')->escaped(), array('id' => 'differences-nextlink'), array('diff' => 'next', 'oldid' => $this->mNewid) + $query);
     } else {
         $nextlink = '&#160;';
     }
     if ($this->mNewRev->isMinor()) {
         $newminor = ChangesList::flag('minor');
//.........这里部分代码省略.........

 /**
  * Returns a row from the history printout.
  *
  * @todo document some more, and maybe clean up the code (some params redundant?)
  *
  * @param stdClass $row The database row corresponding to the previous line.
  * @param mixed $next The database row corresponding to the next line
  *   (chronologically previous)
  * @param bool|string $notificationtimestamp
  * @param bool $latest Whether this row corresponds to the page's latest revision.
  * @param bool $firstInList Whether this row corresponds to the first
  *   displayed on this history page.
  * @return string HTML output for the row
  */
 function historyLine($row, $next, $notificationtimestamp = false, $latest = false, $firstInList = false)
 {
     $rev = new Revision($row);
     $rev->setTitle($this->getTitle());
     if (is_object($next)) {
         $prevRev = new Revision($next);
         $prevRev->setTitle($this->getTitle());
     } else {
         $prevRev = null;
     }
     $curlink = $this->curLink($rev, $latest);
     $lastlink = $this->lastLink($rev, $next);
     $curLastlinks = $curlink . $this->historyPage->message['pipe-separator'] . $lastlink;
     $histLinks = Html::rawElement('span', array('class' => 'mw-history-histlinks'), $this->msg('parentheses')->rawParams($curLastlinks)->escaped());
     $diffButtons = $this->diffButtons($rev, $firstInList);
     $s = $histLinks . $diffButtons;
     $link = $this->revLink($rev);
     $classes = array();
     $del = '';
     $user = $this->getUser();
     // Show checkboxes for each revision
     if ($user->isAllowed('deleterevision')) {
         $this->preventClickjacking();
         // If revision was hidden from sysops, disable the checkbox
         if (!$rev->userCan(Revision::DELETED_RESTRICTED, $user)) {
             $del = Xml::check('deleterevisions', false, array('disabled' => 'disabled'));
             // Otherwise, enable the checkbox...
         } else {
             $del = Xml::check('showhiderevisions', false, array('name' => 'ids[' . $rev->getId() . ']'));
         }
         // User can only view deleted revisions...
     } elseif ($rev->getVisibility() && $user->isAllowed('deletedhistory')) {
         // If revision was hidden from sysops, disable the link
         if (!$rev->userCan(Revision::DELETED_RESTRICTED, $user)) {
             $del = Linker::revDeleteLinkDisabled(false);
             // Otherwise, show the link...
         } else {
             $query = array('type' => 'revision', 'target' => $this->getTitle()->getPrefixedDBkey(), 'ids' => $rev->getId());
             $del .= Linker::revDeleteLink($query, $rev->isDeleted(Revision::DELETED_RESTRICTED), false);
         }
     }
     if ($del) {
         $s .= " {$del} ";
     }
     $lang = $this->getLanguage();
     $dirmark = $lang->getDirMark();
     $s .= " {$link}";
     $s .= $dirmark;
     $s .= " <span class='history-user'>" . Linker::revUserTools($rev, true) . "</span>";
     $s .= $dirmark;
     if ($rev->isMinor()) {
         $s .= ' ' . ChangesList::flag('minor');
     }
     # Sometimes rev_len isn't populated
     if ($rev->getSize() !== null) {
         # Size is always public data
         $prevSize = isset($this->parentLens[$row->rev_parent_id]) ? $this->parentLens[$row->rev_parent_id] : 0;
         $sDiff = ChangesList::showCharacterDifference($prevSize, $rev->getSize());
         $fSize = Linker::formatRevisionSize($rev->getSize());
         $s .= ' <span class="mw-changeslist-separator">. .</span> ' . "{$fSize} {$sDiff}";
     }
     # Text following the character difference is added just before running hooks
     $s2 = Linker::revComment($rev, false, true);
     if ($notificationtimestamp && $row->rev_timestamp >= $notificationtimestamp) {
         $s2 .= ' <span class="updatedmarker">' . $this->msg('updatedmarker')->escaped() . '</span>';
         $classes[] = 'mw-history-line-updated';
     }
     $tools = array();
     # Rollback and undo links
     if ($prevRev && $this->getTitle()->quickUserCan('edit', $user)) {
         if ($latest && $this->getTitle()->quickUserCan('rollback', $user)) {
             // Get a rollback link without the brackets
             $rollbackLink = Linker::generateRollback($rev, $this->getContext(), array('verify', 'noBrackets'));
             if ($rollbackLink) {
                 $this->preventClickjacking();
                 $tools[] = $rollbackLink;
             }
         }
         if (!$rev->isDeleted(Revision::DELETED_TEXT) && !$prevRev->isDeleted(Revision::DELETED_TEXT)) {
             # Create undo tooltip for the first (=latest) line only
             $undoTooltip = $latest ? array('title' => $this->msg('tooltip-undo')->text()) : array();
             $undolink = Linker::linkKnown($this->getTitle(), $this->msg('editundo')->escaped(), $undoTooltip, array('action' => 'edit', 'undoafter' => $prevRev->getId(), 'undo' => $rev->getId()));
             $tools[] = "<span class=\"mw-history-undo\">{$undolink}</span>";
         }
     }
     // Allow extension to add their own links here
//.........这里部分代码省略.........

 protected function formatRevisionRow($row, $earliestLiveTime, $remaining)
 {
     $rev = Revision::newFromArchiveRow($row, array('title' => $this->mTargetObj));
     $revTextSize = '';
     $ts = wfTimestamp(TS_MW, $row->ar_timestamp);
     // Build checkboxen...
     if ($this->mAllowed) {
         if ($this->mInvert) {
             if (in_array($ts, $this->mTargetTimestamp)) {
                 $checkBox = Xml::check("ts{$ts}");
             } else {
                 $checkBox = Xml::check("ts{$ts}", true);
             }
         } else {
             $checkBox = Xml::check("ts{$ts}");
         }
     } else {
         $checkBox = '';
     }
     // Build page & diff links...
     $user = $this->getUser();
     if ($this->mCanView) {
         $titleObj = $this->getPageTitle();
         # Last link
         if (!$rev->userCan(Revision::DELETED_TEXT, $this->getUser())) {
             $pageLink = htmlspecialchars($this->getLanguage()->userTimeAndDate($ts, $user));
             $last = $this->msg('diff')->escaped();
         } elseif ($remaining > 0 || $earliestLiveTime && $ts > $earliestLiveTime) {
             $pageLink = $this->getPageLink($rev, $titleObj, $ts);
             $last = Linker::linkKnown($titleObj, $this->msg('diff')->escaped(), array(), array('target' => $this->mTargetObj->getPrefixedText(), 'timestamp' => $ts, 'diff' => 'prev'));
         } else {
             $pageLink = $this->getPageLink($rev, $titleObj, $ts);
             $last = $this->msg('diff')->escaped();
         }
     } else {
         $pageLink = htmlspecialchars($this->getLanguage()->userTimeAndDate($ts, $user));
         $last = $this->msg('diff')->escaped();
     }
     // User links
     $userLink = Linker::revUserTools($rev);
     // Minor edit
     $minor = $rev->isMinor() ? ChangesList::flag('minor') : '';
     // Revision text size
     $size = $row->ar_len;
     if (!is_null($size)) {
         $revTextSize = Linker::formatRevisionSize($size);
     }
     // Edit summary
     $comment = Linker::revComment($rev);
     // Tags
     $attribs = array();
     list($tagSummary, $classes) = ChangeTags::formatSummaryRow($row->ts_tags, 'deletedhistory');
     if ($classes) {
         $attribs['class'] = implode(' ', $classes);
     }
     // Revision delete links
     $revdlink = Linker::getRevDeleteLink($user, $rev, $this->mTargetObj);
     $revisionRow = $this->msg('undelete-revision-row')->rawParams($checkBox, $revdlink, $last, $pageLink, $userLink, $minor, $revTextSize, $comment, $tagSummary)->escaped();
     return Xml::tags('li', $attribs, $revisionRow) . "\n";
 }

//.........这里部分代码省略.........
            $batch->add(NS_USER, $row->rc_user_text);
            $batch->add(NS_USER_TALK, $row->rc_user_text);
        }
    }
    $dbr->freeResult($res);
    if ($feedFormat) {
        rcOutputFeed($rows, $feedFormat, $limit, $hideminor, $lastmod);
    } else {
        # Web output...
        // Run existence checks
        $batch->execute();
        $any = $wgRequest->getBool('categories_any', $defaults['categories_any']);
        // Output header
        if (!$specialPage->including()) {
            $wgOut->addWikiText('<div class="minor_text">' . wfMsgForContentNoTrans("recentchangestext") . '<br /></div>');
            // Dump everything here
            $nondefaults = array();
            wfAppendToArrayIfNotDefault('days', $days, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('limit', $limit, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('hideminor', $hideminor, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('hidebots', $hidebots, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('hideanons', $hideanons, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('hideliu', $hideliu, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('hidemyself', $hidemyself, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('from', $from, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('namespace', $namespace, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('invert', $invert, $defaults, $nondefaults);
            wfAppendToArrayIfNotDefault('categories_any', $any, $defaults, $nondefaults);
            // Add end of the texts
            $wgOut->addHTML('<div class="rcoptions">' . rcOptionsPanel($defaults, $nondefaults) . "\n");
            //XXCHANGED
            $wgOut->addHTML(rcNamespaceForm($namespace, $invert, $reverse, $featured, $nondefaults, $any) . '</div>' . "\n");
            //XXADDED
            global $wgLanguageCode;
            if ($wgUser->getID() > 0 && $wgLanguageCode == 'en') {
                $sk = $wgUser->getSkin();
                $url = $wgRequest->getRequestURL();
                if ($wgRequest->getVal('refresh', null) != null) {
                    $url = str_replace("&refresh=1", "", $url);
                    $url = str_replace("?refresh=1", "", $url);
                    $wgOut->addHTML("<a href='{$url}' class='button secondary'>" . wfMsg('rc_turn_refresh_off') . "</a>");
                } else {
                    if (strpos($url, "?") !== false) {
                        $url .= "&refresh=1";
                    } else {
                        $url .= "?refresh=1";
                    }
                    $wgOut->addHTML("<a href='{$url}' class='button secondary'>" . wfMsg('rc_turn_refresh_on') . "</a>");
                }
                $wgOut->addHTML("&nbsp;<a class='button secondary' href='#' onclick=\"open('/index.php?title=Special:RCBuddy&hidepatrolled=1&limit=200&featured=1', '', 'scrollbars=no,status=no,width=570,height=200,resizable=yes,titlebar=no');\">RC Buddy</a>");
            }
        }
        // And now for the content
        $wgOut->setSyndicated(true);
        $list = ChangesList::newFromUser($wgUser);
        if ($wgAllowCategorizedRecentChanges) {
            $categories = trim($wgRequest->getVal('categories', ""));
            $categories = str_replace("|", "\n", $categories);
            $categories = explode("\n", $categories);
            rcFilterByCategories($rows, $categories, $any);
        }
        $s = $list->beginRecentChangesList();
        $s .= "<div id='recentchanges'>\n";
        $counter = 1;
        $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption('shownumberswatching');
        $watcherCache = array();
        foreach ($rows as $obj) {
            if ($limit == 0) {
                break;
            }
            if (!($hideminor && $obj->rc_minor) && !($hidepatrolled && $obj->rc_patrolled)) {
                $rc = RecentChange::newFromRow($obj);
                $rc->counter = $counter++;
                if ($wgShowUpdatedMarker && !empty($obj->wl_notificationtimestamp) && $obj->rc_timestamp >= $obj->wl_notificationtimestamp) {
                    $rc->notificationtimestamp = true;
                } else {
                    $rc->notificationtimestamp = false;
                }
                $rc->numberofWatchingusers = 0;
                // Default
                if ($showWatcherCount && $obj->rc_namespace >= 0) {
                    if (!isset($watcherCache[$obj->rc_namespace][$obj->rc_title])) {
                        $watcherCache[$obj->rc_namespace][$obj->rc_title] = $dbr->selectField('watchlist', 'COUNT(*)', array('wl_namespace' => $obj->rc_namespace, 'wl_title' => $obj->rc_title), __METHOD__ . '-watchers');
                    }
                    $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
                }
                $rc->show_namespace = $namespace;
                $rc->invert = $invert;
                $rc->reverse = $reverse;
                $rc->featured = $featured;
                $s .= $list->recentChangesLine($rc, !empty($obj->wl_user));
                --$limit;
            }
        }
        $s .= $list->endRecentChangesList();
        $s .= "</div>\n";
        $wgOut->addHTML($s);
    }
}

 /**
  * Generates each row in the contributions list.
  *
  * Contributions which are marked "top" are currently on top of the history.
  * For these contributions, a [rollback] link is shown for users with roll-
  * back privileges. The rollback link restores the most recent version that
  * was not written by the target user.
  *
  * @todo This would probably look a lot nicer in a table.
  */
 function formatRow($row)
 {
     global $wgUser, $wgLang, $wgContLang;
     wfProfileIn(__METHOD__);
     $sk = $this->getSkin();
     $rev = new Revision($row);
     $classes = array();
     $page = Title::newFromRow($row);
     $page->resetArticleId($row->rev_page);
     // use process cache
     $link = $sk->link($page, htmlspecialchars($page->getPrefixedText()), array(), $page->isRedirect() ? array('redirect' => 'no') : array());
     # Mark current revisions
     $difftext = $topmarktext = '';
     if ($row->rev_id == $row->page_latest) {
         $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
         # Add rollback link
         if (!$row->page_is_new && $page->quickUserCan('rollback') && $page->quickUserCan('edit')) {
             $this->preventClickjacking();
             $topmarktext .= ' ' . $sk->generateRollback($rev);
         }
     }
     # Is there a visible previous revision?
     if ($rev->userCan(Revision::DELETED_TEXT) && $rev->getParentId() !== 0) {
         $difftext = $sk->linkKnown($page, $this->messages['diff'], array(), array('diff' => 'prev', 'oldid' => $row->rev_id));
     } else {
         $difftext = $this->messages['diff'];
     }
     $histlink = $sk->linkKnown($page, $this->messages['hist'], array(), array('action' => 'history'));
     $comment = $wgContLang->getDirMark() . $sk->revComment($rev, false, true);
     $date = $wgLang->timeanddate(wfTimestamp(TS_MW, $row->rev_timestamp), true);
     if ($rev->isDeleted(Revision::DELETED_TEXT)) {
         $d = '<span class="history-deleted">' . $date . '</span>';
     } else {
         $d = $sk->linkKnown($page, htmlspecialchars($date), array(), array('oldid' => intval($row->rev_id)));
     }
     if ($this->target == 'newbies') {
         $userlink = ' . . ' . $sk->userLink($row->rev_user, $row->rev_user_text);
         $userlink .= ' ' . wfMsg('parentheses', $sk->userTalkLink($row->rev_user, $row->rev_user_text)) . ' ';
     } else {
         $userlink = '';
     }
     if ($rev->getParentId() === 0) {
         $nflag = ChangesList::flag('newpage');
     } else {
         $nflag = '';
     }
     if ($rev->isMinor()) {
         $mflag = ChangesList::flag('minor');
     } else {
         $mflag = '';
     }
     // Don't show useless link to people who cannot hide revisions
     $canHide = $wgUser->isAllowed('deleterevision');
     if ($canHide || $rev->getVisibility() && $wgUser->isAllowed('deletedhistory')) {
         if (!$rev->userCan(Revision::DELETED_RESTRICTED)) {
             $del = $this->mSkin->revDeleteLinkDisabled($canHide);
             // revision was hidden from sysops
         } else {
             $query = array('type' => 'revision', 'target' => $page->getPrefixedDbkey(), 'ids' => $rev->getId());
             $del = $this->mSkin->revDeleteLink($query, $rev->isDeleted(Revision::DELETED_RESTRICTED), $canHide);
         }
         $del .= ' ';
     } else {
         $del = '';
     }
     $diffHistLinks = '(' . $difftext . $this->messages['pipe-separator'] . $histlink . ')';
     $ret = "{$del}{$d} {$diffHistLinks} {$nflag}{$mflag} {$link}{$userlink} {$comment} {$topmarktext}";
     # Denote if username is redacted for this edit
     if ($rev->isDeleted(Revision::DELETED_USER)) {
         $ret .= " <strong>" . wfMsgHtml('rev-deleted-user-contribs') . "</strong>";
     }
     # Tags, if any.
     list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow($row->ts_tags, 'contributions');
     $classes = array_merge($classes, $newClasses);
     $ret .= " {$tagSummary}";
     // Let extensions add data
     wfRunHooks('ContributionsLineEnding', array(&$this, &$ret, $row));
     $classes = implode(' ', $classes);
     $ret = "<li class=\"{$classes}\">{$ret}</li>\n";
     wfProfileOut(__METHOD__);
     return $ret;
 }

 /**
  * Renders an item in the feed
  * @param MWTimestamp $ts The time the edit occurred
  * @param string $diffLink url to the diff for the edit
  * @param string $username The username of the user that made the edit (absent if anonymous)
  * @param string $comment The edit summary
  * @param Title|null $title The title of the page that was edited
  * @param bool $isAnon Is the edit anonymous?
  * @param int|null $bytes Net number of bytes changed or null if not applicable
  * @param bool $isMinor Is the edit minor?
  * @return string HTML code
  *
  * @todo FIXME: use an array as an argument?
  */
 protected function renderFeedItemHtml($ts, $diffLink = '', $username = '', $comment = '', $title = null, $isAnon = false, $bytes = 0, $isMinor = false)
 {
     $output = $this->getOutput();
     $user = $this->getUser();
     $lang = $this->getLanguage();
     if ($isAnon) {
         $usernameClass = MobileUI::iconClass('anonymous', 'before', 'icon-16px mw-mf-user mw-mf-anon');
     } else {
         $usernameClass = MobileUI::iconClass('user', 'before', 'icon-16px mw-mf-user');
     }
     $html = Html::openElement('li', array('class' => 'page-summary'));
     if ($diffLink) {
         $html .= Html::openElement('a', array('href' => $diffLink, 'class' => 'title'));
     } else {
         $html .= Html::openElement('div', array('class' => 'title'));
     }
     if ($title) {
         $html .= Html::element('h3', array(), $title->getPrefixedText());
     }
     if ($username && $this->showUsername) {
         $html .= Html::element('p', array('class' => $usernameClass), $username);
     }
     $html .= Html::element('p', array('class' => 'edit-summary component truncated-text multi-line two-line'), $comment);
     if ($isMinor) {
         $html .= ChangesList::flag('minor');
     }
     $html .= Html::openElement('div', array('class' => 'list-thumb')) . Html::element('p', array('class' => 'timestamp'), $lang->userTime($ts, $user));
     if ($bytes) {
         $formattedBytes = $lang->formatNum($bytes);
         if ($bytes > 0) {
             $formattedBytes = '+' . $formattedBytes;
             $bytesClass = 'mw-mf-bytesadded';
         } else {
             $bytesClass = 'mw-mf-bytesremoved';
         }
         $html .= Html::element('p', array('class' => $bytesClass, 'dir' => 'ltr'), $formattedBytes);
     }
     $html .= Html::closeElement('div');
     if ($diffLink) {
         $html .= Html::closeElement('a');
     } else {
         $html .= Html::closeElement('div');
     }
     $html .= Html::closeElement('li');
     $output->addHtml($html);
 }

//.........这里部分代码省略.........
    # Spit out some control panel links
    $thisTitle = SpecialPage::getTitleFor('Watchlist');
    $skin = $wgUser->getSkin();
    $showLinktext = wfMsgHtml('show');
    $hideLinktext = wfMsgHtml('hide');
    # Hide/show minor edits
    $label = $hideMinor ? $showLinktext : $hideLinktext;
    $linkBits = wfArrayToCGI(array('hideMinor' => 1 - (int) $hideMinor), $nondefaults);
    $links[] = wfMsgHtml('rcshowhideminor', $skin->makeKnownLinkObj($thisTitle, $label, $linkBits));
    # Hide/show bot edits
    $label = $hideBots ? $showLinktext : $hideLinktext;
    $linkBits = wfArrayToCGI(array('hideBots' => 1 - (int) $hideBots), $nondefaults);
    $links[] = wfMsgHtml('rcshowhidebots', $skin->makeKnownLinkObj($thisTitle, $label, $linkBits));
    # Hide/show anonymous edits
    $label = $hideAnons ? $showLinktext : $hideLinktext;
    $linkBits = wfArrayToCGI(array('hideAnons' => 1 - (int) $hideAnons), $nondefaults);
    $links[] = wfMsgHtml('rcshowhideanons', $skin->makeKnownLinkObj($thisTitle, $label, $linkBits));
    # Hide/show logged in edits
    $label = $hideLiu ? $showLinktext : $hideLinktext;
    $linkBits = wfArrayToCGI(array('hideLiu' => 1 - (int) $hideLiu), $nondefaults);
    $links[] = wfMsgHtml('rcshowhideliu', $skin->makeKnownLinkObj($thisTitle, $label, $linkBits));
    # Hide/show own edits
    $label = $hideOwn ? $showLinktext : $hideLinktext;
    $linkBits = wfArrayToCGI(array('hideOwn' => 1 - (int) $hideOwn), $nondefaults);
    $links[] = wfMsgHtml('rcshowhidemine', $skin->makeKnownLinkObj($thisTitle, $label, $linkBits));
    # Hide/show patrolled edits
    if ($wgUser->useRCPatrol()) {
        $label = $hidePatrolled ? $showLinktext : $hideLinktext;
        $linkBits = wfArrayToCGI(array('hidePatrolled' => 1 - (int) $hidePatrolled), $nondefaults);
        $links[] = wfMsgHtml('rcshowhidepatr', $skin->makeKnownLinkObj($thisTitle, $label, $linkBits));
    }
    # Namespace filter and put the whole form together.
    $form .= $wlInfo;
    $form .= $cutofflinks;
    $form .= implode(' | ', $links);
    $form .= Xml::openElement('form', array('method' => 'post', 'action' => $thisTitle->getLocalUrl()));
    $form .= '<hr /><p>';
    $form .= Xml::label(wfMsg('namespace'), 'namespace') . '&nbsp;';
    $form .= Xml::namespaceSelector($nameSpace, '') . '&nbsp;';
    $form .= Xml::checkLabel(wfMsg('invert'), 'invert', 'nsinvert', $invert) . '&nbsp;';
    $form .= Xml::submitButton(wfMsg('allpagessubmit')) . '</p>';
    $form .= Xml::hidden('days', $days);
    if ($hideMinor) {
        $form .= Xml::hidden('hideMinor', 1);
    }
    if ($hideBots) {
        $form .= Xml::hidden('hideBots', 1);
    }
    if ($hideAnons) {
        $form .= Xml::hidden('hideAnons', 1);
    }
    if ($hideLiu) {
        $form .= Xml::hidden('hideLiu', 1);
    }
    if ($hideOwn) {
        $form .= Xml::hidden('hideOwn', 1);
    }
    $form .= Xml::closeElement('form');
    $form .= Xml::closeElement('fieldset');
    $wgOut->addHTML($form);
    # If there's nothing to show, stop here
    if ($numRows == 0) {
        $wgOut->addWikiMsg('watchnochange');
        return;
    }
    /* End bottom header */
    /* Do link batch query */
    $linkBatch = new LinkBatch();
    while ($row = $dbr->fetchObject($res)) {
        $userNameUnderscored = str_replace(' ', '_', $row->rc_user_text);
        if ($row->rc_user != 0) {
            $linkBatch->add(NS_USER, $userNameUnderscored);
        }
        $linkBatch->add(NS_USER_TALK, $userNameUnderscored);
    }
    $linkBatch->execute();
    $dbr->dataSeek($res, 0);
    $list = ChangesList::newFromUser($wgUser);
    $s = $list->beginRecentChangesList();
    $counter = 1;
    while ($obj = $dbr->fetchObject($res)) {
        # Make RC entry
        $rc = RecentChange::newFromRow($obj);
        $rc->counter = $counter++;
        if ($wgShowUpdatedMarker) {
            $updated = $obj->wl_notificationtimestamp;
        } else {
            $updated = false;
        }
        if ($wgRCShowWatchingUsers && $wgUser->getOption('shownumberswatching')) {
            $rc->numberofWatchingusers = $dbr->selectField('watchlist', 'COUNT(*)', array('wl_namespace' => $obj->rc_namespace, 'wl_title' => $obj->rc_title), __METHOD__);
        } else {
            $rc->numberofWatchingusers = 0;
        }
        $s .= $list->recentChangesLine($rc, $updated);
    }
    $s .= $list->endRecentChangesList();
    $dbr->freeResult($res);
    $wgOut->addHTML($s);
}

//.........这里部分代码省略.........
         // These should already have been filtered out of the query, but just in case.
         if ($type === RC_LOG && $row->rc_deleted & LogPage::DELETED_ACTION) {
             $vals['actionhidden'] = '';
             $anyHidden = true;
         }
         if ($type !== RC_LOG || LogEventsList::userCanBitfield($row->rc_deleted, LogPage::DELETED_ACTION, $user)) {
             if ($this->fld_title) {
                 ApiQueryBase::addTitleInfo($vals, $title);
             }
             if ($this->fld_ids) {
                 $vals['pageid'] = intval($row->rc_cur_id);
                 $vals['revid'] = intval($row->rc_this_oldid);
                 $vals['old_revid'] = intval($row->rc_last_oldid);
             }
         }
     }
     /* Add user data and 'anon' flag, if user is anonymous. */
     if ($this->fld_user || $this->fld_userid) {
         if ($row->rc_deleted & Revision::DELETED_USER) {
             $vals['userhidden'] = '';
             $anyHidden = true;
         }
         if (Revision::userCanBitfield($row->rc_deleted, Revision::DELETED_USER, $user)) {
             if ($this->fld_userid) {
                 $vals['userid'] = $row->rc_user;
                 // for backwards compatibility
                 $vals['user'] = $row->rc_user;