includes/specials/SpecialUnwatchedpages.php

   1 <?php
   2 /**
   3  * Implements Special:Unwatchedpages
   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 special page that displays a list of pages that are not on anyones watchlist.
  29  *
  30  * @ingroup SpecialPage
  31  */
  32 class UnwatchedpagesPage extends QueryPage {
  33
  34         function __construct( $name = 'Unwatchedpages' ) {
  35                 parent::__construct( $name, 'unwatchedpages' );
  36         }
  37
  38         public function isExpensive() {
  39                 return true;
  40         }
  41
  42         function isSyndicated() {
  43                 return false;
  44         }
  45
  46         /**
  47          * Pre-cache page existence to speed up link generation
  48          *
  49          * @param IDatabase $db
  50          * @param ResultWrapper $res
  51          */
  52         public function preprocessResults( $db, $res ) {
  53                 if ( !$res->numRows() ) {
  54                         return;
  55                 }
  56
  57                 $batch = new LinkBatch();
  58                 foreach ( $res as $row ) {
  59                         $batch->add( $row->namespace, $row->title );
  60                 }
  61                 $batch->execute();
  62
  63                 $res->seek( 0 );
  64         }
  65
  66         public function getQueryInfo() {
  67                 $dbr = wfGetDB( DB_REPLICA );
  68                 return [
  69                         'tables' => [ 'page', 'watchlist' ],
  70                         'fields' => [
  71                                 'namespace' => 'page_namespace',
  72                                 'title' => 'page_title',
  73                                 'value' => 'page_namespace'
  74                         ],
  75                         'conds' => [
  76                                 'wl_title IS NULL',
  77                                 'page_is_redirect' => 0,
  78                                 'page_namespace != ' . $dbr->addQuotes( NS_MEDIAWIKI ),
  79                         ],
  80                         'join_conds' => [ 'watchlist' => [
  81                                 'LEFT JOIN', [ 'wl_title = page_title',
  82                                         'wl_namespace = page_namespace' ] ] ]
  83                 ];
  84         }
  85
  86         function sortDescending() {
  87                 return false;
  88         }
  89
  90         function getOrderFields() {
  91                 return [ 'page_namespace', 'page_title' ];
  92         }
  93
  94         /**
  95          * Add the JS
  96          * @param string|null $par
  97          */
  98         public function execute( $par ) {
  99                 parent::execute( $par );
 100                 $this->getOutput()->addModules( 'mediawiki.special.unwatchedPages' );
 101         }
 102
 103         /**
 104          * @param Skin $skin
 105          * @param object $result Result row
 106          * @return string
 107          */
 108         function formatResult( $skin, $result ) {
 109                 global $wgContLang;
 110
 111                 $nt = Title::makeTitleSafe( $result->namespace, $result->title );
 112                 if ( !$nt ) {
 113                         return Html::element( 'span', [ 'class' => 'mw-invalidtitle' ],
 114                                 Linker::getInvalidTitleDescription( $this->getContext(), $result->namespace, $result->title ) );
 115                 }
 116
 117                 $text = $wgContLang->convert( $nt->getPrefixedText() );
 118
 119                 $linkRenderer = $this->getLinkRenderer();
 120
 121                 $plink = $linkRenderer->makeKnownLink( $nt, $text );
 122                 $wlink = $linkRenderer->makeKnownLink(
 123                         $nt,
 124                         $this->msg( 'watch' )->text(),
 125                         [ 'class' => 'mw-watch-link' ],
 126                         [ 'action' => 'watch' ]
 127                 );
 128
 129                 return $this->getLanguage()->specialList( $plink, $wlink );
 130         }
 131
 132         protected function getGroupName() {
 133                 return 'maintenance';
 134         }
 135 }