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 use Wikimedia\Rdbms\ResultWrapper;
  28
  29 /**
  30  * A special page that displays a list of pages that are not on anyones watchlist.
  31  *
  32  * @ingroup SpecialPage
  33  */
  34 class UnwatchedpagesPage extends QueryPage {
  35
  36         function __construct( $name = 'Unwatchedpages' ) {
  37                 parent::__construct( $name, 'unwatchedpages' );
  38         }
  39
  40         public function isExpensive() {
  41                 return true;
  42         }
  43
  44         function isSyndicated() {
  45                 return false;
  46         }
  47
  48         /**
  49          * Pre-cache page existence to speed up link generation
  50          *
  51          * @param IDatabase $db
  52          * @param ResultWrapper $res
  53          */
  54         public function preprocessResults( $db, $res ) {
  55                 if ( !$res->numRows() ) {
  56                         return;
  57                 }
  58
  59                 $batch = new LinkBatch();
  60                 foreach ( $res as $row ) {
  61                         $batch->add( $row->namespace, $row->title );
  62                 }
  63                 $batch->execute();
  64
  65                 $res->seek( 0 );
  66         }
  67
  68         public function getQueryInfo() {
  69                 $dbr = wfGetDB( DB_REPLICA );
  70                 return [
  71                         'tables' => [ 'page', 'watchlist' ],
  72                         'fields' => [
  73                                 'namespace' => 'page_namespace',
  74                                 'title' => 'page_title',
  75                                 'value' => 'page_namespace'
  76                         ],
  77                         'conds' => [
  78                                 'wl_title IS NULL',
  79                                 'page_is_redirect' => 0,
  80                                 'page_namespace != ' . $dbr->addQuotes( NS_MEDIAWIKI ),
  81                         ],
  82                         'join_conds' => [ 'watchlist' => [
  83                                 'LEFT JOIN', [ 'wl_title = page_title',
  84                                         'wl_namespace = page_namespace' ] ] ]
  85                 ];
  86         }
  87
  88         function sortDescending() {
  89                 return false;
  90         }
  91
  92         function getOrderFields() {
  93                 return [ 'page_namespace', 'page_title' ];
  94         }
  95
  96         /**
  97          * Add the JS
  98          * @param string|null $par
  99          */
 100         public function execute( $par ) {
 101                 parent::execute( $par );
 102                 $this->getOutput()->addModules( 'mediawiki.special.unwatchedPages' );
 103         }
 104
 105         /**
 106          * @param Skin $skin
 107          * @param object $result Result row
 108          * @return string
 109          */
 110         function formatResult( $skin, $result ) {
 111                 global $wgContLang;
 112
 113                 $nt = Title::makeTitleSafe( $result->namespace, $result->title );
 114                 if ( !$nt ) {
 115                         return Html::element( 'span', [ 'class' => 'mw-invalidtitle' ],
 116                                 Linker::getInvalidTitleDescription( $this->getContext(), $result->namespace, $result->title ) );
 117                 }
 118
 119                 $text = $wgContLang->convert( $nt->getPrefixedText() );
 120
 121                 $linkRenderer = $this->getLinkRenderer();
 122
 123                 $plink = $linkRenderer->makeKnownLink( $nt, $text );
 124                 $wlink = $linkRenderer->makeKnownLink(
 125                         $nt,
 126                         $this->msg( 'watch' )->text(),
 127                         [ 'class' => 'mw-watch-link' ],
 128                         [ 'action' => 'watch' ]
 129                 );
 130
 131                 return $this->getLanguage()->specialList( $plink, $wlink );
 132         }
 133
 134         protected function getGroupName() {
 135                 return 'maintenance';
 136         }
 137 }