Introduce Language::getMessageKeysFor() and use it in ApiQueryAllmessages
[lhc/web/wiklou.git] / includes / specials / SpecialRecentchanges.php
index 0fe1345..e53f048 100644 (file)
@@ -1,13 +1,37 @@
 <?php
-
 /**
  * Implements Special:Recentchanges
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
  * @ingroup SpecialPage
  */
-class SpecialRecentChanges extends SpecialPage {
-       public function __construct() {
-               parent::__construct( 'Recentchanges' );
-               $this->includable( true );
+
+/**
+ * A special page that lists last changes made to the wiki
+ *
+ * @ingroup SpecialPage
+ */
+class SpecialRecentChanges extends IncludableSpecialPage {
+       var $rcOptions, $rcSubpage;
+       protected $customFilters;
+
+       public function __construct( $name = 'Recentchanges' ) {
+               parent::__construct( $name );
        }
 
        /**
@@ -16,41 +40,49 @@ class SpecialRecentChanges extends SpecialPage {
         * @return FormOptions
         */
        public function getDefaultOptions() {
-               global $wgUser;
                $opts = new FormOptions();
 
-               $opts->add( 'days',  (int)$wgUser->getOption( 'rcdays' ) );
-               $opts->add( 'limit', (int)$wgUser->getOption( 'rclimit' ) );
+               $opts->add( 'days',  (int)$this->getUser()->getOption( 'rcdays' ) );
+               $opts->add( 'limit', (int)$this->getUser()->getOption( 'rclimit' ) );
                $opts->add( 'from', '' );
 
-               $opts->add( 'hideminor',     (bool)$wgUser->getOption( 'hideminor' ) );
+               $opts->add( 'hideminor',     $this->getUser()->getBoolOption( 'hideminor' ) );
                $opts->add( 'hidebots',      true  );
                $opts->add( 'hideanons',     false );
                $opts->add( 'hideliu',       false );
-               $opts->add( 'hidepatrolled', false );
+               $opts->add( 'hidepatrolled', $this->getUser()->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;
        }
 
        /**
-        * Get a FormOptions object with options as specified by the user
+        * Create a FormOptions object with options as specified by the user
+        *
+        * @param $parameters array
         *
         * @return FormOptions
         */
        public function setup( $parameters ) {
-               global $wgRequest;
-
                $opts = $this->getDefaultOptions();
-               $opts->fetchValuesFromRequest( $wgRequest );
+
+               $this->customFilters = array();
+               wfRunHooks( 'SpecialRecentChangesFilters', array( $this, &$this->customFilters ) );
+               foreach( $this->customFilters as $key => $params ) {
+                       $opts->add( $key, $params['default'] );
+               }
+
+               $opts->fetchValuesFromRequest( $this->getRequest() );
 
                // Give precedence to subpage syntax
-               if ( $parameters !== null ) {
+               if( $parameters !== null ) {
                        $this->parseParameters( $parameters, $opts );
                }
 
@@ -59,62 +91,80 @@ class SpecialRecentChanges extends SpecialPage {
        }
 
        /**
-        * Get a FormOptions object sepcific for feed requests
+        * Create a FormOptions object specific for feed requests and return it
         *
         * @return FormOptions
         */
        public function feedSetup() {
-               global $wgFeedLimit, $wgRequest;
+               global $wgFeedLimit;
                $opts = $this->getDefaultOptions();
-               $opts->fetchValuesFromRequest( $wgRequest, array( 'days', 'limit', 'hideminor' ) );
+               # Feed is cached on limit,hideminor,namespace; other params would randomly not work
+               $opts->fetchValuesFromRequest( $this->getRequest(), array( 'limit', 'hideminor', 'namespace' ) );
                $opts->validateIntBounds( 'limit', 0, $wgFeedLimit );
                return $opts;
        }
 
+       /**
+        * Get the current FormOptions for this request
+        */
+       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;
+       }
+
+
        /**
         * Main execution point
         *
-        * @param $parameters string
+        * @param $subpage String
         */
-       public function execute( $parameters ) {
-               global $wgRequest, $wgOut;
-               $feedFormat = $wgRequest->getVal( 'feed' );
+       public function execute( $subpage ) {
+               $this->rcSubpage = $subpage;
+               $feedFormat = $this->including() ? null : $this->getRequest()->getVal( 'feed' );
 
                # 10 seconds server-side caching max
-               $wgOut->setSquidMaxage( 10 );
-
+               $this->getOutput()->setSquidMaxage( 10 );
+               # Check if the client has a cached version
                $lastmod = $this->checkLastModified( $feedFormat );
-               if( $lastmod === false ){
+               if( $lastmod === false ) {
                        return;
                }
 
-               $opts = $feedFormat ? $this->feedSetup() : $this->setup( $parameters );
+               $opts = $this->getOptions();
                $this->setHeaders();
                $this->outputHeader();
+               $this->addRecentChangesJS();
 
                // Fetch results, prepare a batch link existence check query
-               $rows = array();
-               $batch = new LinkBatch;
                $conds = $this->buildMainQueryConds( $opts );
                $rows = $this->doMainQuery( $conds, $opts );
                if( $rows === false ){
-                       $this->doHeader( $opts );
+                       if( !$this->including() ) {
+                               $this->doHeader( $opts );
+                       }
                        return;
                }
 
-               foreach( $rows as $row ) {
-                       if ( !$feedFormat ) {
-                               // User page and talk links
-                               $batch->add( NS_USER, $row->rc_user_text  );
-                               $batch->add( NS_USER_TALK, $row->rc_user_text  );
+               if( !$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( $feed, $feedObj ) = $this->getFeedObject( $feedFormat );
-                       $feed->execute( $feedObj, $rows, $opts['limit'], $opts['hideminor'], $lastmod );
+               if( $feedFormat ) {
+                       list( $changesFeed, $formatter ) = $this->getFeedObject( $feedFormat );
+                       $changesFeed->execute( $formatter, $rows, $lastmod, $opts );
                } else {
-                       $batch->execute();
                        $this->webOutput( $rows, $opts );
                }
 
@@ -124,15 +174,16 @@ class SpecialRecentChanges extends SpecialPage {
        /**
         * Return an array with a ChangesFeed object and ChannelFeed object
         *
-        * @return array
+        * @return Array
         */
        public function getFeedObject( $feedFormat ){
-               $feed = new ChangesFeed( $feedFormat, 'rcfeed' );
-               $feedObj = $feed->getFeedObject(
+               $changesFeed = new ChangesFeed( $feedFormat, 'rcfeed' );
+               $formatter = $changesFeed->getFeedObject(
                        wfMsgForContent( 'recentchanges' ),
-                       wfMsgForContent( 'recentchanges-feed-description' )
+                       wfMsgForContent( 'recentchanges-feed-description' ),
+                       $this->getTitle()->getFullURL()
                );
-               return array( $feed, $feedObj );
+               return array( $changesFeed, $formatter );
        }
 
        /**
@@ -144,21 +195,43 @@ class SpecialRecentChanges extends SpecialPage {
         */
        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;
+               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'] = $m[1];
+                       if( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
+                               $opts['limit'] = $m[1];
+                       }
+                       if( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
+                               $opts['days'] = $m[1];
+                       }
                }
        }
 
@@ -168,14 +241,13 @@ class SpecialRecentChanges extends SpecialPage {
         * update the timestamp
         *
         * @param $feedFormat String
-        * @return int or false
+        * @return String or false
         */
        public function checkLastModified( $feedFormat ) {
-               global $wgUseRCPatrol, $wgOut;
                $dbr = wfGetDB( DB_SLAVE );
-               $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __FUNCTION__ );
-               if ( $feedFormat || !$wgUseRCPatrol ) {
-                       if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
+               $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;
                        }
@@ -190,8 +262,6 @@ class SpecialRecentChanges extends SpecialPage {
         * @return array
         */
        public function buildMainQueryConds( FormOptions $opts ) {
-               global $wgUser;
-
                $dbr = wfGetDB( DB_SLAVE );
                $conds = array();
 
@@ -222,90 +292,157 @@ class SpecialRecentChanges extends SpecialPage {
 
                $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 
-
-               $hidePatrol = $wgUser->useRCPatrol() && $opts['hidepatrolled'];
+               $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['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( $wgUser->getId() ) {
-                               $conds[] = 'rc_user != ' . $dbr->addQuotes( $wgUser->getId() );
+                       if( $this->getUser()->getId() ) {
+                               $conds[] = 'rc_user != ' . $dbr->addQuotes( $this->getUser()->getId() );
                        } else {
-                               $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
+                               $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $this->getUser()->getName() );
                        }
                }
 
                # Namespace filtering
-               if ( $opts['namespace'] !== '' ) {
-                       if ( !$opts['invert'] ) {
-                               $conds[] = 'rc_namespace = ' . $dbr->addQuotes( $opts['namespace'] );
+               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 {
-                               $conds[] = 'rc_namespace != ' . $dbr->addQuotes( $opts['namespace'] );
+                               # 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;
        }
 
        /**
         * Process the query
         *
-        * @param $conds array
+        * @param $conds Array
         * @param $opts FormOptions
         * @return database result or false (for Recentchangeslinked only)
         */
        public function doMainQuery( $conds, $opts ) {
-               global $wgUser;
-
                $tables = array( 'recentchanges' );
                $join_conds = array();
+               $query_options = array(
+                       'USE INDEX' => array( 'recentchanges' => 'rc_timestamp' )
+               );
 
-               $uid = $wgUser->getId();
+               $uid = $this->getUser()->getId();
                $dbr = wfGetDB( DB_SLAVE );
                $limit = $opts['limit'];
                $namespace = $opts['namespace'];
                $invert = $opts['invert'];
+               $associated = $opts['associated'];
 
+               $fields = array( $dbr->tableName( 'recentchanges' ) . '.*' ); // all rc columns
                // JOIN on watchlist for users
-               if( $uid ) {
+               if ( $uid ) {
                        $tables[] = 'watchlist';
-                       $join_conds = array( 'watchlist' => array('LEFT JOIN',"wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace") );
+                       $fields[] = 'wl_user';
+                       $fields[] = 'wl_notificationtimestamp';
+                       $join_conds['watchlist'] = array('LEFT JOIN',
+                               "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace");
+               }
+               if ( $this->getUser()->isAllowed( 'rollback' ) ) {
+                       $tables[] = 'page';
+                       $fields[] = 'page_latest';
+                       $join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id');
+               }
+               if ( !$this->including() ) {
+                       // Tag stuff.
+                       // Doesn't work when transcluding. See bug 23293
+                       ChangeTags::modifyDisplayQuery(
+                               $tables, $fields, $conds, $join_conds, $query_options,
+                               $opts['tagfilter']
+                       );
                }
 
-               wfRunHooks('SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts ) );
+               if ( !wfRunHooks( 'SpecialRecentChangesQuery',
+                       array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ) ) )
+               {
+                       return false;
+               }
 
-               // Is there either one namespace selected or excluded?
-               // Also, if this is "all" or main namespace, just use timestamp index.
-               if( is_null($namespace) || $invert || $namespace == NS_MAIN ) {
-                       $res = $dbr->select( $tables, '*', $conds, __METHOD__,
-                               array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
-                                       'USE INDEX' => array('recentchanges' => 'rc_timestamp') ),
+               // Don't use the new_namespace_time timestamp index if:
+               // (a) "All namespaces" selected
+               // (b) We want pages in more than one namespace (inverted/associated)
+               // (c) There is a tag to filter on (use tag index instead)
+               // (d) UNION + sort/limit is not an option for the DBMS
+               if( $namespace === ''
+                       || ( $invert || $associated )
+                       || $opts['tagfilter'] != ''
+                       || !$dbr->unionSupportsOrderAndLimit() )
+               {
+                       $res = $dbr->select( $tables, $fields, $conds, __METHOD__,
+                               array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ) +
+                               $query_options,
                                $join_conds );
                // We have a new_namespace_time index! UNION over new=(0,1) and sort result set!
                } else {
                        // New pages
-                       $sqlNew = $dbr->selectSQLText( $tables, '*',
+                       $sqlNew = $dbr->selectSQLText(
+                               $tables,
+                               $fields,
                                array( 'rc_new' => 1 ) + $conds,
                                __METHOD__,
-                               array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
-                                       'USE INDEX' =>  array('recentchanges' => 'new_name_timestamp') ),
-                               $join_conds );
+                               array(
+                                       'ORDER BY' => 'rc_timestamp DESC',
+                                       'LIMIT' => $limit,
+                                       'USE INDEX' => array( 'recentchanges' => 'new_name_timestamp' )
+                               ),
+                               $join_conds
+                       );
                        // Old pages
-                       $sqlOld = $dbr->selectSQLText( $tables, '*',
+                       $sqlOld = $dbr->selectSQLText(
+                               $tables,
+                               $fields,
                                array( 'rc_new' => 0 ) + $conds,
                                __METHOD__,
-                               array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
-                                       'USE INDEX' =>  array('recentchanges' => 'new_name_timestamp') ),
-                               $join_conds );
+                               array(
+                                       'ORDER BY' => 'rc_timestamp DESC',
+                                       'LIMIT' => $limit,
+                                       'USE INDEX' => array( 'recentchanges' => 'new_name_timestamp' )
+                               ),
+                               $join_conds
+                       );
                        # Join the two fast queries, and sort the result set
-                       $sql = "($sqlNew) UNION ($sqlOld) ORDER BY rc_timestamp DESC LIMIT $limit";
+                       $sql = $dbr->unionQueries( array( $sqlNew, $sqlOld ), false ) .
+                               ' ORDER BY rc_timestamp DESC';
+                       $sql = $dbr->limitResult( $sql, $limit, false );
                        $res = $dbr->query( $sql, __METHOD__ );
                }
 
@@ -313,77 +450,79 @@ class SpecialRecentChanges extends SpecialPage {
        }
 
        /**
-        * Send output to $wgOut, only called if not used feeds
+        * Send output to the OutputPage object, only called if not used feeds
         *
-        * @param $rows array of database rows
+        * @param $rows Array of database rows
         * @param $opts FormOptions
         */
        public function webOutput( $rows, $opts ) {
-               global $wgOut, $wgUser, $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
-               global $wgAllowCategorizedRecentChanges;
+               global $wgRCShowWatchingUsers, $wgShowUpdatedMarker, $wgAllowCategorizedRecentChanges;
 
                $limit = $opts['limit'];
 
-               if ( !$this->including() ) {
+               if( !$this->including() ) {
                        // Output options box
                        $this->doHeader( $opts );
                }
 
                // And now for the content
-               $wgOut->setSyndicated( true );
-
-               $list = ChangesList::newFromUser( $wgUser );
+               $this->getOutput()->setFeedAppendQuery( $this->getFeedQuery() );
 
-               if ( $wgAllowCategorizedRecentChanges ) {
+               if( $wgAllowCategorizedRecentChanges ) {
                        $this->filterByCategories( $rows, $opts );
                }
 
-               $s = $list->beginRecentChangesList();
-               $counter = 1;
-
-               $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
+               $showWatcherCount = $wgRCShowWatchingUsers && $this->getUser()->getOption( 'shownumberswatching' );
                $watcherCache = array();
 
                $dbr = wfGetDB( DB_SLAVE );
 
-               foreach( $rows as $obj ){
-                       if( $limit == 0) {
+               $counter = 1;
+               $list = ChangesList::newFromContext( $this->getContext() );
+
+               $s = $list->beginRecentChangesList();
+               foreach( $rows as $obj ) {
+                       if( $limit == 0 ) {
                                break;
                        }
-
-                       if ( ! ( $opts['hideminor']     && $obj->rc_minor     ) &&
-                            ! ( $opts['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 = 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'
+                                               );
                                }
-                               $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
-                               --$limit;
+                               $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
                        }
+                       $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
+                       --$limit;
                }
                $s .= $list->endRecentChangesList();
-               $wgOut->addHTML( $s );
+               $this->getOutput()->addHTML( $s );
+       }
+
+       /**
+        * Get the query string to append to feed link URLs.
+        * This is overridden by RCL to add the target parameter
+        */
+       public function getFeedQuery() {
+               return false;
        }
 
        /**
@@ -393,13 +532,16 @@ class SpecialRecentChanges extends SpecialPage {
         * @return String: XHTML
         */
        public function doHeader( $opts ) {
-               global $wgScript, $wgOut;
+               global $wgScript;
 
-               $this->setTopText( $wgOut, $opts );
+               $this->setTopText( $opts );
 
                $defaults = $opts->getAllValues();
                $nondefaults = $opts->getChangedValues();
-               $opts->consumeValues( array( 'namespace', 'invert' ) );
+               $opts->consumeValues( array(
+                       'namespace', 'invert', 'associated', 'tagfilter',
+                       'categories', 'categories_any'
+               ) );
 
                $panel = array();
                $panel[] = $this->optionsPanel( $defaults, $nondefaults );
@@ -411,13 +553,13 @@ class SpecialRecentChanges extends SpecialPage {
                $submit = ' ' . Xml::submitbutton( wfMsg( 'allpagessubmit' ) );
 
                $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
-               foreach ( $extraOpts as $optionRow ) {
+               foreach( $extraOpts as $optionRow ) {
                        # Add submit button to the last row only
                        ++$count;
                        $addSubmit = $count === $extraOptsCount ? $submit : '';
 
                        $out .= Xml::openElement( 'tr' );
-                       if ( is_array( $optionRow ) ) {
+                       if( is_array( $optionRow ) ) {
                                $out .= Xml::tags( 'td', array( 'class' => 'mw-label' ), $optionRow[0] );
                                $out .= Xml::tags( 'td', array( 'class' => 'mw-input' ), $optionRow[1] . $addSubmit );
                        } else {
@@ -428,38 +570,43 @@ class SpecialRecentChanges extends SpecialPage {
                $out .= Xml::closeElement( 'table' );
 
                $unconsumed = $opts->getUnconsumedValues();
-               foreach ( $unconsumed as $key => $value ) {
-                       $out .= Xml::hidden( $key, $value );
+               foreach( $unconsumed as $key => $value ) {
+                       $out .= Html::hidden( $key, $value );
                }
 
                $t = $this->getTitle();
-               $out .= Xml::hidden( 'title', $t->getPrefixedText() );
+               $out .= Html::hidden( 'title', $t->getPrefixedText() );
                $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
                $panel[] = $form;
                $panelString = implode( "\n", $panel );
 
-               $wgOut->addHTML(
+               $this->getOutput()->addHTML(
                        Xml::fieldset( wfMsg( 'recentchanges-legend' ), $panelString, array( 'class' => 'rcoptions' ) )
                );
 
-               $this->setBottomText( $wgOut, $opts );
+               $this->setBottomText( $opts );
        }
 
        /**
         * Get options to be displayed in a form
         *
         * @param $opts FormOptions
-        * @return array
+        * @return Array
         */
-       function getExtraOptions( $opts ){
+       function getExtraOptions( $opts ) {
                $extraOpts = array();
                $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 
                global $wgAllowCategorizedRecentChanges;
-               if ( $wgAllowCategorizedRecentChanges ) {
+               if( $wgAllowCategorizedRecentChanges ) {
                        $extraOpts['category'] = $this->categoryFilterForm( $opts );
                }
 
+               $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
+               if ( count( $tagFilter ) ) {
+                       $extraOpts['tagfilter'] = $tagFilter;
+               }
+
                wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
                return $extraOpts;
        }
@@ -467,46 +614,59 @@ class SpecialRecentChanges extends SpecialPage {
        /**
         * Send the text to be displayed above the options
         *
-        * @param $out OutputPage
         * @param $opts FormOptions
         */
-       function setTopText( OutputPage $out, FormOptions $opts ){
-               $out->addWikiText( wfMsgForContentNoTrans( 'recentchangestext' ) );
+       function setTopText( FormOptions $opts ) {
+               global $wgContLang;
+               $this->getOutput()->addWikiText(
+               Html::rawElement( 'p',
+                       array( 'lang' => $wgContLang->getCode(), 'dir' => $wgContLang->getDir() ),
+                       wfMsgForContentNoTrans( 'recentchangestext' )
+               ), false );
        }
 
        /**
         * Send the text to be displayed after the options, for use in
         * Recentchangeslinked
         *
-        * @param $out OutputPage
         * @param $opts FormOptions
         */
-       function setBottomText( OutputPage $out, FormOptions $opts ){}
+       function setBottomText( FormOptions $opts ) {}
 
        /**
         * Creates the choose namespace selection
         *
+        * @todo Uses radio buttons (HASHAR)
         * @param $opts FormOptions
-        * @return string
+        * @return String
         */
        protected function namespaceFilterForm( FormOptions $opts ) {
-               $nsSelect = HTMLnamespaceselector( $opts['namespace'], '' );
-               $nsLabel = Xml::label( wfMsg('namespace'), 'namespace' );
-               $invert = Xml::checkLabel( wfMsg('invert'), 'invert', 'nsinvert', $opts['invert'] );
-               return array( $nsLabel, "$nsSelect $invert" );
+               $nsSelect = Xml::namespaceSelector( $opts['namespace'], '' );
+               $nsLabel = Xml::label( wfMsg( 'namespace' ), 'namespace' );
+               $invert = Xml::checkLabel(
+                       wfMsg( 'invert' ), 'invert', 'nsinvert',
+                       $opts['invert'],
+                       array( 'title' => wfMsg( 'tooltip-invert' ) )
+               );
+               $associated = Xml::checkLabel(
+                       wfMsg( 'namespace_association' ), 'associated', 'nsassociated',
+                       $opts['associated'],
+                       array( 'title' => wfMsg( 'tooltip-namespace_association' ) )
+               );
+               return array( $nsLabel, "$nsSelect $invert $associated" );
        }
 
        /**
         * Create a input to filter changes by categories
         *
         * @param $opts FormOptions
-        * @return array
+        * @return Array
         */
        protected function categoryFilterForm( FormOptions $opts ) {
-               list( $label, $input ) = Xml::inputLabelSep( wfMsg('rc_categories'),
+               list( $label, $input ) = Xml::inputLabelSep( wfMsg( 'rc_categories' ),
                        'categories', 'mw-categories', false, $opts['categories'] );
 
-               $input .= ' ' . Xml::checkLabel( wfMsg('rc_categories_any'),
+               $input .= ' ' . Xml::checkLabel( wfMsg( 'rc_categories_any' ),
                        'categories_any', 'mw-categories_any', $opts['categories_any'] );
 
                return array( $label, $input );
@@ -515,55 +675,62 @@ class SpecialRecentChanges extends SpecialPage {
        /**
         * Filter $rows by categories set in $opts
         *
-        * @param $rows array of database rows
+        * @param $rows Array of database rows
         * @param $opts FormOptions
         */
        function filterByCategories( &$rows, FormOptions $opts ) {
-               $categories = array_map( 'trim', explode( "|" , $opts['categories'] ) );
+               $categories = array_map( 'trim', explode( '|' , $opts['categories'] ) );
 
-               if( empty($categories) ) {
+               if( !count( $categories ) ) {
                        return;
                }
 
                # Filter categories
                $cats = array();
-               foreach ( $categories as $cat ) {
+               foreach( $categories as $cat ) {
                        $cat = trim( $cat );
-                       if ( $cat == "" ) continue;
+                       if( $cat == '' ) {
+                               continue;
+                       }
                        $cats[] = $cat;
                }
 
                # Filter articles
                $articles = array();
                $a2r = array();
-               foreach ( $rows AS $k => $r ) {
+               $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) ) {
+                       if( $id == 0 ) {
+                               continue; # Page might have been deleted...
+                       }
+                       if( !in_array( $id, $articles ) ) {
                                $articles[] = $id;
                        }
-                       if ( !isset($a2r[$id]) ) {
+                       if( !isset( $a2r[$id] ) ) {
                                $a2r[$id] = array();
                        }
                        $a2r[$id][] = $k;
+                       $rowsarr[$k] = $r;
                }
 
                # Shortcut?
-               if ( !count($articles) || !count($cats) )
-                       return ;
+               if( !count( $articles ) || !count( $cats ) ) {
+                       return;
+               }
 
                # Look up
-               $c = new Categoryfinder ;
-               $c->seed( $articles, $cats, $opts['categories_any'] ? "OR" : "AND" ) ;
+               $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 ) {
+               foreach( $match as $id ) {
+                       foreach( $a2r[$id] as $rev ) {
                                $k = $rev;
-                               $newrows[$k] = $rows[$k];
+                               $newrows[$k] = $rowsarr[$k];
                        }
                }
                $rows = $newrows;
@@ -571,39 +738,44 @@ class SpecialRecentChanges extends SpecialPage {
 
        /**
         * Makes change an option link which carries all the other options
-        * @param $title see Title
-        * @param $override
-        * @param $options
+        *
+        * @param $title Title
+        * @param $override Array: options to override
+        * @param $options Array: current options
+        * @param $active Boolean: whether to show the link in bold
         */
        function makeOptionsLink( $title, $override, $options, $active = false ) {
-               global $wgUser;
-               $sk = $wgUser->getSkin();
-               $params = wfArrayMerge( $options, $override );
-               return $sk->link( $this->getTitle(), htmlspecialchars( $title ),
-                       ( $active ? array( 'style'=>'font-weight: bold;' ) : array() ), $params, array( 'known' ) );
+               $params = $override + $options;
+               $text = htmlspecialchars( $title );
+               if ( $active ) {
+                       $text = '<strong>' . $text . '</strong>';
+               }
+               return Linker::linkKnown( $this->getTitle(), $text, array(), $params );
        }
 
        /**
         * Creates the options panel.
-        * @param $defaults array
-        * @param $nondefaults array
+        *
+        * @param $defaults Array
+        * @param $nondefaults Array
         */
        function optionsPanel( $defaults, $nondefaults ) {
-               global $wgLang, $wgUser, $wgRCLinkLimits, $wgRCLinkDays;
+               global $wgRCLinkLimits, $wgRCLinkDays;
 
                $options = $nondefaults + $defaults;
 
-               if( $options['from'] )
-                       $note = wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
-                               $wgLang->formatNum( $options['limit'] ),
-                               $wgLang->timeanddate( $options['from'], true ) );
-               else
-                       $note = wfMsgExt( 'rcnote', array( 'parseinline' ),
-                               $wgLang->formatNum( $options['limit'] ),
-                               $wgLang->formatNum( $options['days'] ),
-                               $wgLang->timeAndDate( wfTimestampNow(), true ),
-                               $wgLang->date( wfTimestampNow(), true ),
-                               $wgLang->time( wfTimestampNow(), true ) );
+               $note = '';
+               if( !wfEmptyMsg( 'rclegend' ) ) {
+                       $note .= '<div class="mw-rclegend">' .
+                               wfMsgExt( 'rclegend', array( 'parseinline' ) ) . "</div>\n";
+               }
+               if( $options['from'] ) {
+                       $note .= wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
+                               $this->getLang()->formatNum( $options['limit'] ),
+                               $this->getLang()->timeanddate( $options['from'], true ),
+                               $this->getLang()->date( $options['from'], true ),
+                               $this->getLang()->time( $options['from'], true ) ) . '<br />';
+               }
 
                # Sort data for display and make sure it's unique after we've added user data.
                $wgRCLinkLimits[] = $options['limit'];
@@ -615,50 +787,63 @@ class SpecialRecentChanges extends SpecialPage {
 
                // limit links
                foreach( $wgRCLinkLimits as $value ) {
-                       $cl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
-                               array( 'limit' => $value ), $nondefaults, $value == $options['limit'] ) ;
+                       $cl[] = $this->makeOptionsLink( $this->getLang()->formatNum( $value ),
+                               array( 'limit' => $value ), $nondefaults, $value == $options['limit'] );
                }
-               $cl = implode( ' | ', $cl );
+               $cl = $this->getLang()->pipeList( $cl );
 
                // day links, reset 'from' to none
                foreach( $wgRCLinkDays as $value ) {
-                       $dl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
-                               array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] ) ;
+                       $dl[] = $this->makeOptionsLink( $this->getLang()->formatNum( $value ),
+                               array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] );
                }
-               $dl = implode( ' | ', $dl );
+               $dl = $this->getLang()->pipeList( $dl );
 
 
                // show/hide links
                $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ) );
-               $minorLink = $this->makeOptionsLink( $showhide[1-$options['hideminor']],
-                       array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
-               $botLink = $this->makeOptionsLink( $showhide[1-$options['hidebots']],
-                       array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
-               $anonsLink = $this->makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
-                       array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
-               $liuLink   = $this->makeOptionsLink( $showhide[1-$options['hideliu']],
-                       array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
-               $patrLink  = $this->makeOptionsLink( $showhide[1-$options['hidepatrolled']],
-                       array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
-               $myselfLink = $this->makeOptionsLink( $showhide[1-$options['hidemyself']],
-                       array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
-
-               $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
-               $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
-               $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
-               $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
-               if( $wgUser->useRCPatrol() )
-                       $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
-               $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
-               $hl = implode( ' | ', $links );
+               $filters = array(
+                       'hideminor'     => 'rcshowhideminor',
+                       'hidebots'      => 'rcshowhidebots',
+                       'hideanons'     => 'rcshowhideanons',
+                       'hideliu'               => 'rcshowhideliu',
+                       'hidepatrolled' => 'rcshowhidepatr',
+                       'hidemyself'    => 'rcshowhidemine'
+               );
+               foreach ( $this->customFilters as $key => $params ) {
+                       $filters[$key] = $params['msg'];
+               }
+               // Disable some if needed
+               if ( !$this->getUser()->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[] = wfMsgHtml( $msg, $link );
+               }
 
                // show from this onward link
-               $now = $wgLang->timeanddate( wfTimestampNow(), true );
-               $tl =  $this->makeOptionsLink( $now, array( 'from' => wfTimestampNow() ), $nondefaults );
+               $timestamp = wfTimestampNow();
+               $now = $this->getLang()->timeanddate( $timestamp, true );
+               $tl = $this->makeOptionsLink(
+                       $now, array( 'from' => $timestamp ), $nondefaults
+               );
 
                $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter' ),
-                       $cl, $dl, $hl );
+                       $cl, $dl, $this->getLang()->pipeList( $links ) );
                $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter' ), $tl );
-               return "$note<br />$rclinks<br />$rclistfrom";
+               return "{$note}$rclinks<br />$rclistfrom";
+       }
+
+       /**
+        * add javascript specific to the [[Special:RecentChanges]] page
+        */
+       function addRecentChangesJS() {
+               $this->getOutput()->addModules( array(
+                       'mediawiki.special.recentchanges',
+               ) );
        }
 }