add( 'target', '' ); $opts->add( 'showlinkedto', false ); $opts->add( 'tagfilter', '' ); return $opts; } public function parseParameters( $par, FormOptions $opts ) { $opts['target'] = $par; } public function feedSetup() { $opts = parent::feedSetup(); $opts['target'] = $this->getRequest()->getVal( 'target' ); return $opts; } public function getFeedObject( $feedFormat ){ $feed = new ChangesFeed( $feedFormat, false ); $feedObj = $feed->getFeedObject( $this->msg( 'recentchangeslinked-title', $this->getTargetTitle()->getPrefixedText() ) ->inContentLanguage()->text(), $this->msg( 'recentchangeslinked-feed' )->inContentLanguage()->text(), $this->getTitle()->getFullUrl() ); return array( $feed, $feedObj ); } public function doMainQuery( $conds, $opts ) { $target = $opts['target']; $showlinkedto = $opts['showlinkedto']; $limit = $opts['limit']; if ( $target === '' ) { return false; } $outputPage = $this->getOutput(); $title = Title::newFromURL( $target ); if( !$title || $title->getInterwiki() != '' ){ $outputPage->wrapWikiMsg( "
\n$1\n

", 'allpagesbadtitle' ); return false; } $outputPage->setPageTitle( $this->msg( 'recentchangeslinked-title', $title->getPrefixedText() ) ); /* * Ordinary links are in the pagelinks table, while transclusions are * in the templatelinks table, categorizations in categorylinks and * image use in imagelinks. We need to somehow combine all these. * Special:Whatlinkshere does this by firing multiple queries and * merging the results, but the code we inherit from our parent class * expects only one result set so we use UNION instead. */ $dbr = wfGetDB( DB_SLAVE, 'recentchangeslinked' ); $id = $title->getArticleID(); $ns = $title->getNamespace(); $dbkey = $title->getDBkey(); $tables = array( 'recentchanges' ); $select = array( $dbr->tableName( 'recentchanges' ) . '.*' ); $join_conds = array(); $query_options = array(); // left join with watchlist table to highlight watched rows $uid = $this->getUser()->getId(); if( $uid ) { $tables[] = 'watchlist'; $select[] = 'wl_user'; $join_conds['watchlist'] = array( 'LEFT JOIN', "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace" ); } if ( $this->getUser()->isAllowed( 'rollback' ) ) { $tables[] = 'page'; $join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id'); $select[] = 'page_latest'; } ChangeTags::modifyDisplayQuery( $tables, $select, $conds, $join_conds, $query_options, $opts['tagfilter'] ); if ( !wfRunHooks( 'SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$select ) ) ) { return false; } if( $ns == NS_CATEGORY && !$showlinkedto ) { // special handling for categories // XXX: should try to make this less klugy $link_tables = array( 'categorylinks' ); $showlinkedto = true; } else { // for now, always join on these tables; really should be configurable as in whatlinkshere $link_tables = array( 'pagelinks', 'templatelinks' ); // imagelinks only contains links to pages in NS_FILE if( $ns == NS_FILE || !$showlinkedto ) { $link_tables[] = 'imagelinks'; } } if( $id == 0 && !$showlinkedto ) { return false; // nonexistent pages can't link to any pages } // field name prefixes for all the various tables we might want to join with $prefix = array( 'pagelinks' => 'pl', 'templatelinks' => 'tl', 'categorylinks' => 'cl', 'imagelinks' => 'il' ); $subsql = array(); // SELECT statements to combine with UNION foreach( $link_tables as $link_table ) { $pfx = $prefix[$link_table]; // imagelinks and categorylinks tables have no xx_namespace field, and have xx_to instead of xx_title if( $link_table == 'imagelinks' ) { $link_ns = NS_FILE; } elseif( $link_table == 'categorylinks' ) { $link_ns = NS_CATEGORY; } else { $link_ns = 0; } if( $showlinkedto ) { // find changes to pages linking to this page if( $link_ns ) { if( $ns != $link_ns ) { continue; } // should never happen, but check anyway $subconds = array( "{$pfx}_to" => $dbkey ); } else { $subconds = array( "{$pfx}_namespace" => $ns, "{$pfx}_title" => $dbkey ); } $subjoin = "rc_cur_id = {$pfx}_from"; } else { // find changes to pages linked from this page $subconds = array( "{$pfx}_from" => $id ); if( $link_table == 'imagelinks' || $link_table == 'categorylinks' ) { $subconds["rc_namespace"] = $link_ns; $subjoin = "rc_title = {$pfx}_to"; } else { $subjoin = "rc_namespace = {$pfx}_namespace AND rc_title = {$pfx}_title"; } } if( $dbr->unionSupportsOrderAndLimit()) { $order = array( 'ORDER BY' => 'rc_timestamp DESC' ); } else { $order = array(); } $query = $dbr->selectSQLText( array_merge( $tables, array( $link_table ) ), $select, $conds + $subconds, __METHOD__, $order + $query_options, $join_conds + array( $link_table => array( 'INNER JOIN', $subjoin ) ) ); if( $dbr->unionSupportsOrderAndLimit()) $query = $dbr->limitResult( $query, $limit ); $subsql[] = $query; } if( count($subsql) == 0 ) { return false; // should never happen } if( count($subsql) == 1 && $dbr->unionSupportsOrderAndLimit() ) { $sql = $subsql[0]; } else { // need to resort and relimit after union $sql = $dbr->unionQueries($subsql, false).' ORDER BY rc_timestamp DESC'; $sql = $dbr->limitResult($sql, $limit, false); } $res = $dbr->query( $sql, __METHOD__ ); if( $res->numRows() == 0 ) { $this->mResultEmpty = true; } return $res; } /** * @param $opts FormOptions * @return array */ function getExtraOptions( $opts ){ $opts->consumeValues( array( 'showlinkedto', 'target', 'tagfilter' ) ); $extraOpts = array(); $extraOpts['namespace'] = $this->namespaceFilterForm( $opts ); $extraOpts['target'] = array( $this->msg( 'recentchangeslinked-page' )->escaped(), Xml::input( 'target', 40, str_replace('_',' ',$opts['target']) ) . Xml::check( 'showlinkedto', $opts['showlinkedto'], array('id' => 'showlinkedto') ) . ' ' . Xml::label( $this->msg( 'recentchangeslinked-to' )->text(), 'showlinkedto' ) ); $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] ); if ($tagFilter) { $extraOpts['tagfilter'] = $tagFilter; } return $extraOpts; } /** * @return Title */ function getTargetTitle() { if ( $this->rclTargetTitle === null ) { $opts = $this->getOptions(); if ( isset( $opts['target'] ) && $opts['target'] !== '' ) { $this->rclTargetTitle = Title::newFromText( $opts['target'] ); } else { $this->rclTargetTitle = false; } } return $this->rclTargetTitle; } function setTopText( FormOptions $opts ) { $target = $this->getTargetTitle(); if( $target ) { $this->getOutput()->addBacklinkSubtitle( $target ); } } public function getFeedQuery() { $target = $this->getTargetTitle(); if( $target ) { return "target=" . urlencode( $target->getPrefixedDBkey() ); } else { return false; } } function setBottomText( FormOptions $opts ) { if( isset( $this->mResultEmpty ) && $this->mResultEmpty ) { $this->getOutput()->addWikiMsg( 'recentchangeslinked-noresult' ); } } }