includes/specials/SpecialMostlinkedcategories.php

   1 <?php
   2 /**
   3  * Implements Special:Mostlinkedcategories
   4  *
   5  * Copyright © 2005, Ævar Arnfjörð Bjarmason
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  * @ingroup SpecialPage
  24  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  25  */
  26
  27 /**
  28  * A querypage to show categories ordered in descending order by the pages in them
  29  *
  30  * @ingroup SpecialPage
  31  */
  32 class MostlinkedCategoriesPage extends QueryPage {
  33
  34         function __construct( $name = 'Mostlinkedcategories' ) {
  35                 parent::__construct( $name );
  36         }
  37
  38         function isSyndicated() { return false; }
  39
  40         function getQueryInfo() {
  41                 return array (
  42                         'tables' => array ( 'category' ),
  43                         'fields' => array ( 'cat_title AS title',
  44                                         NS_CATEGORY . ' AS namespace',
  45                                         'cat_pages AS value' ),
  46                 );
  47         }
  48
  49         function sortDescending() { return true; }
  50
  51         /**
  52          * Fetch user page links and cache their existence
  53          *
  54          * @param $db DatabaseBase
  55          * @param $res DatabaseResult
  56          */
  57         function preprocessResults( $db, $res ) {
  58                 if ( !$res->numRows() ) {
  59                         return;
  60                 }
  61
  62                 $batch = new LinkBatch;
  63                 foreach ( $res as $row ) {
  64                         $batch->add( NS_CATEGORY, $row->title );
  65                 }
  66                 $batch->execute();
  67
  68                 // Back to start for display
  69                 $res->seek( 0 );
  70         }
  71
  72         /**
  73          * @param $skin Skin
  74          * @param  $result
  75          * @return string
  76          */
  77         function formatResult( $skin, $result ) {
  78                 global $wgContLang;
  79
  80                 $nt = Title::makeTitleSafe( NS_CATEGORY, $result->title );
  81                 if ( !$nt ) {
  82                         return Html::element( 'span', array( 'class' => 'mw-invalidtitle' ),
  83                                 Linker::getInvalidTitleDescription( $this->getContext(), NS_CATEGORY, $result->title ) );
  84                 }
  85
  86                 $text = $wgContLang->convert( $nt->getText() );
  87
  88                 $plink = Linker::link( $nt, htmlspecialchars( $text ) );
  89
  90                 $nlinks = $this->msg( 'nmembers' )->numParams( $result->value )->escaped();
  91                 return $this->getLanguage()->specialList( $plink, $nlinks );
  92         }
  93 }