SpecialRecentchanges.php

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<?php
class SpecialRecentChanges extends IncludableSpecialPage {
    var $rcOptions, $rcSubpage;
    protected $customFilters;

    public function __construct( $name = 'Recentchanges' ) {
        parent::__construct( $name );
    }

    public function getDefaultOptions() {
        $opts = new FormOptions();
        $user = $this->getUser();

        $opts->add( 'days', $user->getIntOption( 'rcdays' ) );
        $opts->add( 'limit', $user->getIntOption( 'rclimit' ) );
        $opts->add( 'from', '' );

        $opts->add( 'hideminor', $user->getBoolOption( 'hideminor' ) );
        $opts->add( 'hidebots', true );
        $opts->add( 'hideanons', false );
        $opts->add( 'hideliu', false );
        $opts->add( 'hidepatrolled', $user->getBoolOption( 'hidepatrolled' ) );
        $opts->add( 'hidemyself', false );

        $opts->add( 'namespace', '', FormOptions::INTNULL );
        $opts->add( 'invert', false );
        $opts->add( 'associated', false );

        $opts->add( 'categories', '' );
        $opts->add( 'categories_any', false );
        $opts->add( 'tagfilter', '' );

        return $opts;
    }

    public function setup( $parameters ) {
        $opts = $this->getDefaultOptions();

        foreach ( $this->getCustomFilters() as $key => $params ) {
            $opts->add( $key, $params['default'] );
        }

        $opts->fetchValuesFromRequest( $this->getRequest() );

        // Give precedence to subpage syntax
        if ( $parameters !== null ) {
            $this->parseParameters( $parameters, $opts );
        }

        $opts->validateIntBounds( 'limit', 0, 5000 );

        return $opts;
    }

    protected function getCustomFilters() {
        if ( $this->customFilters === null ) {
            $this->customFilters = array();
            wfRunHooks( 'SpecialRecentChangesFilters', array( $this, &$this->customFilters ) );
        }

        return $this->customFilters;
    }

    public function feedSetup() {
        global $wgFeedLimit;
        $opts = $this->getDefaultOptions();
        $opts->fetchValuesFromRequest( $this->getRequest() );
        $opts->validateIntBounds( 'limit', 0, $wgFeedLimit );

        return $opts;
    }

    public function getOptions() {
        if ( $this->rcOptions === null ) {
            if ( $this->including() ) {
                $isFeed = false;
            } else {
                $isFeed = (bool)$this->getRequest()->getVal( 'feed' );
            }
            $this->rcOptions = $isFeed ? $this->feedSetup() : $this->setup( $this->rcSubpage );
        }

        return $this->rcOptions;
    }

    public function execute( $subpage ) {
        $this->rcSubpage = $subpage;
        $feedFormat = $this->including() ? null : $this->getRequest()->getVal( 'feed' );

        # 10 seconds server-side caching max
        $this->getOutput()->setSquidMaxage( 10 );
        # Check if the client has a cached version
        $lastmod = $this->checkLastModified( $feedFormat );
        if ( $lastmod === false ) {
            return;
        }

        $opts = $this->getOptions();
        $this->setHeaders();
        $this->outputHeader();
        $this->addModules();

        // Fetch results, prepare a batch link existence check query
        $conds = $this->buildMainQueryConds( $opts );
        $rows = $this->doMainQuery( $conds, $opts );
        if ( $rows === false ) {
            if ( !$this->including() ) {
                $this->doHeader( $opts );
            }

            return;
        }

        if ( !$feedFormat ) {
            $batch = new LinkBatch;
            foreach ( $rows as $row ) {
                $batch->add( NS_USER, $row->rc_user_text );
                $batch->add( NS_USER_TALK, $row->rc_user_text );
                $batch->add( $row->rc_namespace, $row->rc_title );
            }
            $batch->execute();
        }
        if ( $feedFormat ) {
            list( $changesFeed, $formatter ) = $this->getFeedObject( $feedFormat );
            $changesFeed->execute( $formatter, $rows, $lastmod, $opts );
        } else {
            $this->webOutput( $rows, $opts );
        }

        $rows->free();
    }

    public function getFeedObject( $feedFormat ) {
        $changesFeed = new ChangesFeed( $feedFormat, 'rcfeed' );
        $formatter = $changesFeed->getFeedObject(
            $this->msg( 'recentchanges' )->inContentLanguage()->text(),
            $this->msg( 'recentchanges-feed-description' )->inContentLanguage()->text(),
            $this->getTitle()->getFullURL()
        );

        return array( $changesFeed, $formatter );
    }

    public function parseParameters( $par, FormOptions $opts ) {
        $bits = preg_split( '/\s*,\s*/', trim( $par ) );
        foreach ( $bits as $bit ) {
            if ( 'hidebots' === $bit ) {
                $opts['hidebots'] = true;
            }
            if ( 'bots' === $bit ) {
                $opts['hidebots'] = false;
            }
            if ( 'hideminor' === $bit ) {
                $opts['hideminor'] = true;
            }
            if ( 'minor' === $bit ) {
                $opts['hideminor'] = false;
            }
            if ( 'hideliu' === $bit ) {
                $opts['hideliu'] = true;
            }
            if ( 'hidepatrolled' === $bit ) {
                $opts['hidepatrolled'] = true;
            }
            if ( 'hideanons' === $bit ) {
                $opts['hideanons'] = true;
            }
            if ( 'hidemyself' === $bit ) {
                $opts['hidemyself'] = true;
            }

            if ( is_numeric( $bit ) ) {
                $opts['limit'] = $bit;
            }

            $m = array();
            if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
                $opts['limit'] = $m[1];
            }
            if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
                $opts['days'] = $m[1];
            }
            if ( preg_match( '/^namespace=(\d+)$/', $bit, $m ) ) {
                $opts['namespace'] = $m[1];
            }
        }
    }

    public function checkLastModified( $feedFormat ) {
        $dbr = wfGetDB( DB_SLAVE );
        $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
        if ( $feedFormat || !$this->getUser()->useRCPatrol() ) {
            if ( $lastmod && $this->getOutput()->checkLastModified( $lastmod ) ) {
                # Client cache fresh and headers sent, nothing more to do.
                return false;
            }
        }

        return $lastmod;
    }

    public function buildMainQueryConds( FormOptions $opts ) {
        $dbr = wfGetDB( DB_SLAVE );
        $conds = array();

        # It makes no sense to hide both anons and logged-in users
        # Where this occurs, force anons to be shown
        $forcebot = false;
        if ( $opts['hideanons'] && $opts['hideliu'] ) {
            # Check if the user wants to show bots only
            if ( $opts['hidebots'] ) {
                $opts['hideanons'] = false;
            } else {
                $forcebot = true;
                $opts['hidebots'] = false;
            }
        }

        // Calculate cutoff
        $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
        $cutoff_unixtime = $cutoff_unixtime - ( $cutoff_unixtime % 86400 );
        $cutoff = $dbr->timestamp( $cutoff_unixtime );

        $fromValid = preg_match( '/^[0-9]{14}$/', $opts['from'] );
        if ( $fromValid && $opts['from'] > wfTimestamp( TS_MW, $cutoff ) ) {
            $cutoff = $dbr->timestamp( $opts['from'] );
        } else {
            $opts->reset( 'from' );
        }

        $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );

        $hidePatrol = $this->getUser()->useRCPatrol() && $opts['hidepatrolled'];
        $hideLoggedInUsers = $opts['hideliu'] && !$forcebot;
        $hideAnonymousUsers = $opts['hideanons'] && !$forcebot;

        if ( $opts['hideminor'] ) {
            $conds['rc_minor'] = 0;
        }
        if ( $opts['hidebots'] ) {
            $conds['rc_bot'] = 0;
        }
        if ( $hidePatrol ) {
            $conds['rc_patrolled'] = 0;
        }
        if ( $forcebot ) {
            $conds['rc_bot'] = 1;
        }
        if ( $hideLoggedInUsers ) {
            $conds[] = 'rc_user = 0';
        }
        if ( $hideAnonymousUsers ) {
            $conds[] = 'rc_user != 0';
        }

        if ( $opts['hidemyself'] ) {
            if ( $this->getUser()->getId() ) {
                $conds[] = 'rc_user != ' . $dbr->addQuotes( $this->getUser()->getId() );
            } else {
                $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $this->getUser()->getName() );
            }
        }

        # Namespace filtering
        if ( $opts['namespace'] !== '' ) {
            $selectedNS = $dbr->addQuotes( $opts['namespace'] );
            $operator = $opts['invert'] ? '!=' : '=';
            $boolean = $opts['invert'] ? 'AND' : 'OR';

            # namespace association (bug 2429)
            if ( !$opts['associated'] ) {
                $condition = "rc_namespace $operator $selectedNS";
            } else {
                # Also add the associated namespace
                $associatedNS = $dbr->addQuotes(
                    MWNamespace::getAssociated( $opts['namespace'] )
                );
                $condition = "(rc_namespace $operator $selectedNS "
                    . $boolean
                    . " rc_namespace $operator $associatedNS)";
            }

            $conds[] = $condition;
        }

        return $conds;
    }

    public function doMainQuery( $conds, $opts ) {
        $tables = array( 'recentchanges' );
        $join_conds = array();
        $query_options = array(
            'USE INDEX' => array( 'recentchanges' => 'rc_timestamp' )
        );

        $uid = $this->getUser()->getId();
        $dbr = wfGetDB( DB_SLAVE );
        $limit = $opts['limit'];
        $namespace = $opts['namespace'];
        $invert = $opts['invert'];
        $associated = $opts['associated'];

        $fields = RecentChange::selectFields();
        // JOIN on watchlist for users
        if ( $uid && $this->getUser()->isAllowed( 'viewmywatchlist' ) ) {
            $tables[] = 'watchlist';
            $fields[] = 'wl_user';
            $fields[] = 'wl_notificationtimestamp';
            $join_conds['watchlist'] = array( 'LEFT JOIN', array(
                'wl_user' => $uid,
                'wl_title=rc_title',
                'wl_namespace=rc_namespace'
            ) );
        }
        if ( $this->getUser()->isAllowed( 'rollback' ) ) {
            $tables[] = 'page';
            $fields[] = 'page_latest';
            $join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
        }
        // Tag stuff.
        ChangeTags::modifyDisplayQuery(
            $tables,
            $fields,
            $conds,
            $join_conds,
            $query_options,
            $opts['tagfilter']
        );

        if ( !wfRunHooks( 'SpecialRecentChangesQuery',
            array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ) )
        ) {
            return false;
        }

        // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
        // knowledge to use an index merge if it wants (it may use some other index though).
        return $dbr->select(
            $tables,
            $fields,
            $conds + array( 'rc_new' => array( 0, 1 ) ),
            __METHOD__,
            array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ) + $query_options,
            $join_conds
        );
    }

    public function webOutput( $rows, $opts ) {
        global $wgRCShowWatchingUsers, $wgShowUpdatedMarker, $wgAllowCategorizedRecentChanges;

        // Build the final data

        if ( $wgAllowCategorizedRecentChanges ) {
            $this->filterByCategories( $rows, $opts );
        }

        $limit = $opts['limit'];

        $showWatcherCount = $wgRCShowWatchingUsers && $this->getUser()->getOption( 'shownumberswatching' );
        $watcherCache = array();

        $dbr = wfGetDB( DB_SLAVE );

        $counter = 1;
        $list = ChangesList::newFromContext( $this->getContext() );

        $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 ( $wgShowUpdatedMarker && !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();

        // Print things out

        if ( !$this->including() ) {
            // Output options box
            $this->doHeader( $opts );
        }

        // And now for the content
        $feedQuery = $this->getFeedQuery();
        if ( $feedQuery !== '' ) {
            $this->getOutput()->setFeedAppendQuery( $feedQuery );
        } else {
            $this->getOutput()->setFeedAppendQuery( false );
        }

        if ( $rows->numRows() === 0 ) {
            $this->getOutput()->wrapWikiMsg(
                "<div class='mw-changeslist-empty'>\n$1\n</div>", 'recentchanges-noresult'
            );
        } else {
            $this->getOutput()->addHTML( $rclistOutput );
        }
    }

    public function getFeedQuery() {
        global $wgFeedLimit;

        $this->getOptions()->validateIntBounds( 'limit', 0, $wgFeedLimit );
        $options = $this->getOptions()->getChangedValues();

        // wfArrayToCgi() omits options set to null or false
        foreach ( $options as &$value ) {
            if ( $value === false ) {
                $value = '0';
            }
        }
        unset( $value );

        return wfArrayToCgi( $options );
    }

    public function doHeader( $opts ) {
        global $wgScript;

        $this->setTopText( $opts );

        $defaults = $opts->getAllValues();
        $nondefaults = $opts->getChangedValues();

        $panel = array();
        $panel[] = $this->optionsPanel( $defaults, $nondefaults );
        $panel[] = '<hr />';

        $extraOpts = $this->getExtraOptions( $opts );
        $extraOptsCount = count( $extraOpts );
        $count = 0;
        $submit = ' ' . Xml::submitbutton( $this->msg( 'allpagessubmit' )->text() );

        $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
        foreach ( $extraOpts as $name => $optionRow ) {
            # Add submit button to the last row only
            ++$count;
            $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';

            $out .= Xml::openElement( 'tr' );
            if ( is_array( $optionRow ) ) {
                $out .= Xml::tags(
                    'td',
                    array( 'class' => 'mw-label mw-' . $name . '-label' ),
                    $optionRow[0]
                );
                $out .= Xml::tags(
                    'td',
                    array( 'class' => 'mw-input' ),
                    $optionRow[1] . $addSubmit
                );
            } else {
                $out .= Xml::tags(
                    'td',
                    array( 'class' => 'mw-input', 'colspan' => 2 ),
                    $optionRow . $addSubmit
                );
            }
            $out .= Xml::closeElement( 'tr' );
        }
        $out .= Xml::closeElement( 'table' );

        $unconsumed = $opts->getUnconsumedValues();
        foreach ( $unconsumed as $key => $value ) {
            $out .= Html::hidden( $key, $value );
        }

        $t = $this->getTitle();
        $out .= Html::hidden( 'title', $t->getPrefixedText() );
        $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
        $panel[] = $form;
        $panelString = implode( "\n", $panel );

        $this->getOutput()->addHTML(
            Xml::fieldset(
                $this->msg( 'recentchanges-legend' )->text(),
                $panelString,
                array( 'class' => 'rcoptions' )
            )
        );

        $this->setBottomText( $opts );
    }

    function getExtraOptions( $opts ) {
        $opts->consumeValues( array(
            'namespace', 'invert', 'associated', 'tagfilter', 'categories', 'categories_any'
        ) );

        $extraOpts = array();
        $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );

        global $wgAllowCategorizedRecentChanges;
        if ( $wgAllowCategorizedRecentChanges ) {
            $extraOpts['category'] = $this->categoryFilterForm( $opts );
        }

        $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
        if ( count( $tagFilter ) ) {
            $extraOpts['tagfilter'] = $tagFilter;
        }

        // Don't fire the hook for subclasses. (Or should we?)
        if ( $this->getName() === 'Recentchanges' ) {
            wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
        }

        return $extraOpts;
    }

    function setTopText( FormOptions $opts ) {
        global $wgContLang;

        $message = $this->msg( 'recentchangestext' )->inContentLanguage();
        if ( !$message->isDisabled() ) {
            $this->getOutput()->addWikiText(
                Html::rawElement( 'p',
                    array( 'lang' => $wgContLang->getCode(), 'dir' => $wgContLang->getDir() ),
                    "\n" . $message->plain() . "\n"
                ),
                /* $lineStart */ false,
                /* $interface */ false
            );
        }
    }

    function setBottomText( FormOptions $opts ) {
    }

    protected function namespaceFilterForm( FormOptions $opts ) {
        $nsSelect = Html::namespaceSelector(
            array( 'selected' => $opts['namespace'], 'all' => '' ),
            array( 'name' => 'namespace', 'id' => 'namespace' )
        );
        $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
        $invert = Xml::checkLabel(
            $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
            $opts['invert'],
            array( 'title' => $this->msg( 'tooltip-invert' )->text() )
        );
        $associated = Xml::checkLabel(
            $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
            $opts['associated'],
            array( 'title' => $this->msg( 'tooltip-namespace_association' )->text() )
        );

        return array( $nsLabel, "$nsSelect $invert $associated" );
    }

    protected function categoryFilterForm( FormOptions $opts ) {
        list( $label, $input ) = Xml::inputLabelSep( $this->msg( 'rc_categories' )->text(),
            'categories', 'mw-categories', false, $opts['categories'] );

        $input .= ' ' . Xml::checkLabel( $this->msg( 'rc_categories_any' )->text(),
            'categories_any', 'mw-categories_any', $opts['categories_any'] );

        return array( $label, $input );
    }

    function filterByCategories( &$rows, FormOptions $opts ) {
        $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );

        if ( !count( $categories ) ) {
            return;
        }

        # Filter categories
        $cats = array();
        foreach ( $categories as $cat ) {
            $cat = trim( $cat );
            if ( $cat == '' ) {
                continue;
            }
            $cats[] = $cat;
        }

        # Filter articles
        $articles = array();
        $a2r = array();
        $rowsarr = array();
        foreach ( $rows as $k => $r ) {
            $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
            $id = $nt->getArticleID();
            if ( $id == 0 ) {
                continue; # Page might have been deleted...
            }
            if ( !in_array( $id, $articles ) ) {
                $articles[] = $id;
            }
            if ( !isset( $a2r[$id] ) ) {
                $a2r[$id] = array();
            }
            $a2r[$id][] = $k;
            $rowsarr[$k] = $r;
        }

        # Shortcut?
        if ( !count( $articles ) || !count( $cats ) ) {
            return;
        }

        # Look up
        $c = new Categoryfinder;
        $c->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
        $match = $c->run();

        # Filter
        $newrows = array();
        foreach ( $match as $id ) {
            foreach ( $a2r[$id] as $rev ) {
                $k = $rev;
                $newrows[$k] = $rowsarr[$k];
            }
        }
        $rows = $newrows;
    }

    function makeOptionsLink( $title, $override, $options, $active = false ) {
        $params = $override + $options;

        // Bug 36524: false values have be converted to "0" otherwise
        // wfArrayToCgi() will omit it them.
        foreach ( $params as &$value ) {
            if ( $value === false ) {
                $value = '0';
            }
        }
        unset( $value );

        $text = htmlspecialchars( $title );
        if ( $active ) {
            $text = '<strong>' . $text . '</strong>';
        }

        return Linker::linkKnown( $this->getTitle(), $text, array(), $params );
    }

    function optionsPanel( $defaults, $nondefaults ) {
        global $wgRCLinkLimits, $wgRCLinkDays;

        $options = $nondefaults + $defaults;

        $note = '';
        $msg = $this->msg( 'rclegend' );
        if ( !$msg->isDisabled() ) {
            $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
        }

        $lang = $this->getLanguage();
        $user = $this->getUser();
        if ( $options['from'] ) {
            $note .= $this->msg( 'rcnotefrom' )->numParams( $options['limit'] )->params(
                $lang->userTimeAndDate( $options['from'], $user ),
                $lang->userDate( $options['from'], $user ),
                $lang->userTime( $options['from'], $user ) )->parse() . '<br />';
        }

        # Sort data for display and make sure it's unique after we've added user data.
        $linkLimits = $wgRCLinkLimits;
        $linkLimits[] = $options['limit'];
        sort( $linkLimits );
        $linkLimits = array_unique( $linkLimits );

        $linkDays = $wgRCLinkDays;
        $linkDays[] = $options['days'];
        sort( $linkDays );
        $linkDays = array_unique( $linkDays );

        // limit links
        $cl = array();
        foreach ( $linkLimits as $value ) {
            $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
                array( 'limit' => $value ), $nondefaults, $value == $options['limit'] );
        }
        $cl = $lang->pipeList( $cl );

        // day links, reset 'from' to none
        $dl = array();
        foreach ( $linkDays as $value ) {
            $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
                array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] );
        }
        $dl = $lang->pipeList( $dl );

        // show/hide links
        $showhide = array( $this->msg( 'show' )->text(), $this->msg( 'hide' )->text() );
        $filters = array(
            'hideminor' => 'rcshowhideminor',
            'hidebots' => 'rcshowhidebots',
            'hideanons' => 'rcshowhideanons',
            'hideliu' => 'rcshowhideliu',
            'hidepatrolled' => 'rcshowhidepatr',
            'hidemyself' => 'rcshowhidemine'
        );
        foreach ( $this->getCustomFilters() as $key => $params ) {
            $filters[$key] = $params['msg'];
        }
        // Disable some if needed
        if ( !$user->useRCPatrol() ) {
            unset( $filters['hidepatrolled'] );
        }

        $links = array();
        foreach ( $filters as $key => $msg ) {
            $link = $this->makeOptionsLink( $showhide[1 - $options[$key]],
                array( $key => 1 - $options[$key] ), $nondefaults );
            $links[] = $this->msg( $msg )->rawParams( $link )->escaped();
        }

        // show from this onward link
        $timestamp = wfTimestampNow();
        $now = $lang->userTimeAndDate( $timestamp, $user );
        $tl = $this->makeOptionsLink(
            $now, array( 'from' => $timestamp ), $nondefaults
        );

        $rclinks = $this->msg( 'rclinks' )->rawParams( $cl, $dl, $lang->pipeList( $links ) )
            ->parse();
        $rclistfrom = $this->msg( 'rclistfrom' )->rawParams( $tl )->parse();

        return "{$note}$rclinks<br />$rclistfrom";
    }

    protected function addModules() {
        $this->getOutput()->addModules( array(
            'mediawiki.special.recentchanges',
        ) );
    }

    protected function getGroupName() {
        return 'changes';
    }
}