includable( true ); } public function getDefaultOptions() { $opts = parent::getDefaultOptions(); $opts->add( 'target', '' ); $opts->add( 'showlinkedto', false ); return $opts; } public function parseParameters( $par, FormOptions $opts ) { $opts['target'] = $par; } public function feedSetup(){ global $wgRequest; $opts = parent::feedSetup(); $opts['target'] = $wgRequest->getVal( 'target' ); return $opts; } public function getFeedObject( $feedFormat ){ $feed = new ChangesFeed( $feedFormat, false ); $feedObj = $feed->getFeedObject( wfMsgForContent( 'recentchangeslinked-title', $this->mTargetTitle->getPrefixedText() ), wfMsgForContent( 'recentchangeslinked' ) ); return array( $feed, $feedObj ); } public function doMainQuery( $conds, $opts ) { global $wgUser, $wgOut; $target = $opts['target']; $showlinkedto = $opts['showlinkedto']; $limit = $opts['limit']; if ( $target === '' ) { return false; } $title = Title::newFromURL( $target ); if( !$title || $title->getInterwiki() != '' ){ $wgOut->wrapWikiMsg( '
$1

', 'allpagesbadtitle' ); return false; } $this->mTargetTitle = $title; $wgOut->setPageTitle( wfMsg( '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(); // left join with watchlist table to highlight watched rows if( $uid = $wgUser->getId() ) { $tables[] = 'watchlist'; $select[] = 'wl_user'; $join_conds['watchlist'] = array( 'LEFT JOIN', "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace" ); } // XXX: parent class does this, should we too? // wfRunHooks('SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts ) ); 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; else if( $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"; } } $subsql[] = $dbr->selectSQLText( array_merge( $tables, array( $link_table ) ), $select, $conds + $subconds, __METHOD__, array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ), $join_conds + array( $link_table => array( 'INNER JOIN', $subjoin ) ) ); } if( count($subsql) == 0 ) return false; // should never happen if( count($subsql) == 1 ) $sql = $subsql[0]; else { // need to resort and relimit after union $sql = "(" . implode( ") UNION (", $subsql ) . ") ORDER BY rc_timestamp DESC LIMIT {$limit}"; } $res = $dbr->query( $sql, __METHOD__ ); if( $res->numRows() == 0 ) $this->mResultEmpty = true; return $res; } function getExtraOptions( $opts ){ $opts->consumeValues( array( 'showlinkedto', 'target' ) ); $extraOpts = array(); $extraOpts['namespace'] = $this->namespaceFilterForm( $opts ); $extraOpts['target'] = array( wfMsg( 'recentchangeslinked-page' ), Xml::input( 'target', 40, str_replace('_',' ',$opts['target']) ) . Xml::check( 'showlinkedto', $opts['showlinkedto'], array('id' => 'showlinkedto') ) . ' ' . Xml::label( wfMsg("recentchangeslinked-to"), 'showlinkedto' ) ); return $extraOpts; } function setTopText( OutputPage $out, FormOptions $opts ) { global $wgUser; $skin = $wgUser->getSkin(); if( isset( $this->mTargetTitle ) && is_object( $this->mTargetTitle ) ) $out->setSubtitle( wfMsg( 'recentchangeslinked-backlink', $skin->link( $this->mTargetTitle, $this->mTargetTitle->getPrefixedText(), array(), array( 'redirect' => 'no' ) ) ) ); } function setBottomText( OutputPage $out, FormOptions $opts ){ if( isset( $this->mTargetTitle ) && is_object( $this->mTargetTitle ) ){ global $wgUser; $out->setFeedAppendQuery( "target=" . urlencode( $this->mTargetTitle->getPrefixedDBkey() ) ); } if( isset( $this->mResultEmpty ) && $this->mResultEmpty ){ $out->addWikiMsg( 'recentchangeslinked-noresult' ); } } }