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[lhc/web/wiklou.git] / includes / specials / SpecialWantedpages.php
index 7307b33..4624b35 100644 (file)
 <?php
 /**
+ * Implements Special:Wantedpages
+ *
+ * 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
  */
 
 /**
- * implements Special:Wantedpages
+ * A special page that lists most linked pages that does not exist
+ *
  * @ingroup SpecialPage
  */
-class WantedPagesPage extends QueryPage {
-       var $nlinks;
-
-       function WantedPagesPage( $inc = false, $nlinks = true ) {
-               $this->setListoutput( $inc );
-               $this->nlinks = $nlinks;
-       }
-
-       function getName() {
-               return 'Wantedpages';
-       }
-
-       function isExpensive() {
-               return true;
-       }
-       function isSyndicated() { return false; }
-
-       function getSQL() {
-               global $wgWantedPagesThreshold;
-               $count = $wgWantedPagesThreshold - 1;
-               $dbr = wfGetDB( DB_SLAVE );
-               $pagelinks = $dbr->tableName( 'pagelinks' );
-               $page      = $dbr->tableName( 'page' );
-               $sql = "SELECT 'Wantedpages' AS type,
-                               pl_namespace AS namespace,
-                               pl_title AS title,
-                               COUNT(*) AS value
-                        FROM $pagelinks
-                        LEFT JOIN $page AS pg1
-                        ON pl_namespace = pg1.page_namespace AND pl_title = pg1.page_title
-                        LEFT JOIN $page AS pg2
-                        ON pl_from = pg2.page_id
-                        WHERE pg1.page_namespace IS NULL
-                        AND pl_namespace NOT IN ( 2, 3 )
-                        AND pg2.page_namespace != 8
-                        GROUP BY pl_namespace, pl_title
-                        HAVING COUNT(*) > $count";
-
-               wfRunHooks( 'WantedPages::getSQL', array( &$this, &$sql ) );
-               return $sql;
+class WantedPagesPage extends WantedQueryPage {
+       
+       function __construct( $name = 'Wantedpages' ) {
+               parent::__construct( $name );
+               $this->mIncludable = true;
        }
 
-       /**
-        * Cache page existence for performance
-        */
-       function preprocessResults( $db, $res ) {
-               $batch = new LinkBatch;
-               while ( $row = $db->fetchObject( $res ) )
-                       $batch->add( $row->namespace, $row->title );
-               $batch->execute();
+       function execute( $par ) {
+               $inc = $this->including();
 
-               // Back to start for display
-               if ( $db->numRows( $res ) > 0 )
-                       // If there are no rows we get an error seeking.
-                       $db->dataSeek( $res, 0 );
-       }
-
-       /**
-        * Format an individual result
-        *
-        * @param $skin Skin to use for UI elements
-        * @param $result Result row
-        * @return string
-        */
-       public function formatResult( $skin, $result ) {
-               $title = Title::makeTitleSafe( $result->namespace, $result->title );
-               if( $title instanceof Title ) {
-                       if( $this->isCached() ) {
-                               $pageLink = $title->exists()
-                                       ? '<s>' . $skin->makeLinkObj( $title ) . '</s>'
-                                       : $skin->makeBrokenLinkObj( $title );
-                       } else {
-                               $pageLink = $skin->makeBrokenLinkObj( $title );
-                       }
-                       return wfSpecialList( $pageLink, $this->makeWlhLink( $title, $skin, $result ) );
+               if ( $inc ) {
+                       $parts = explode( '/', $par, 2 );
+                       $this->limit = (int)$parts[0];
+                       // @todo FIXME: nlinks is ignored
+                       //$nlinks = isset( $parts[1] ) && $parts[1] === 'nlinks';
+                       $this->offset = 0;
                } else {
-                       $tsafe = htmlspecialchars( $result->title );
-                       return wfMsg( 'wantedpages-badtitle', $tsafe );
-               }
-       }
-
-       /**
-        * Make a "what links here" link for a specified result if required
-        *
-        * @param $title Title to make the link for
-        * @param $skin Skin to use
-        * @param $result Result row
-        * @return string
-        */
-       private function makeWlhLink( $title, $skin, $result ) {
-               global $wgLang;
-               if( $this->nlinks ) {
-                       $wlh = SpecialPage::getTitleFor( 'Whatlinkshere' );
-                       $label = wfMsgExt( 'nlinks', array( 'parsemag', 'escape' ),
-                               $wgLang->formatNum( $result->value ) );
-                       return $skin->makeKnownLinkObj( $wlh, $label, 'target=' . $title->getPrefixedUrl() );
-               } else {
-                       return null;
+                       //$nlinks = true;
                }
+               $this->setListoutput( $inc );
+               $this->shownavigation = !$inc;
+               parent::execute( $par );
        }
 
-}
-
-/**
- * constructor
- */
-function wfSpecialWantedpages( $par = null, $specialPage ) {
-       $inc = $specialPage->including();
-
-       if ( $inc ) {
-               @list( $limit, $nlinks ) = explode( '/', $par, 2 );
-               $limit = (int)$limit;
-               $nlinks = $nlinks === 'nlinks';
-               $offset = 0;
-       } else {
-               list( $limit, $offset ) = wfCheckLimits();
-               $nlinks = true;
+       function getQueryInfo() {
+               global $wgWantedPagesThreshold;
+               $count = $wgWantedPagesThreshold - 1;
+               $query = array(
+                       'tables' => array(
+                               'pagelinks',
+                               'pg1' => 'page',
+                               'pg2' => 'page'
+                       ),
+                       'fields' => array(
+                               'pl_namespace AS namespace',
+                               'pl_title AS title',
+                               'COUNT(*) AS value'
+                       ),
+                       'conds' => array(
+                               'pg1.page_namespace IS NULL',
+                               "pl_namespace NOT IN ( '" . NS_USER .
+                                       "', '" . NS_USER_TALK . "' )",
+                               "pg2.page_namespace != '" . NS_MEDIAWIKI . "'"
+                       ),
+                       'options' => array(
+                               'HAVING' => "COUNT(*) > $count",
+                               'GROUP BY' => 'pl_namespace, pl_title'
+                       ),
+                       'join_conds' => array(
+                               'pg1' => array(
+                                       'LEFT JOIN', array(
+                                               'pg1.page_namespace = pl_namespace',
+                                               'pg1.page_title = pl_title'
+                                       )
+                               ),
+                               'pg2' => array( 'LEFT JOIN', 'pg2.page_id = pl_from' )
+                       )
+               );
+               // Replacement for the WantedPages::getSQL hook
+               wfRunHooks( 'WantedPages::getQueryInfo', array( &$this, &$query ) );
+               return $query;
        }
-
-       $wpp = new WantedPagesPage( $inc, $nlinks );
-
-       $wpp->doQuery( $offset, $limit, !$inc );
 }