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 use Wikimedia\Rdbms\IDatabase;
  29
  30 /**
  31  * A special page that displays a list of pages that are not on anyones watchlist.
  32  *
  33  * @ingroup SpecialPage
  34  */
  35 class UnwatchedpagesPage extends QueryPage {
  36
  37         function __construct( $name = 'Unwatchedpages' ) {
  38                 parent::__construct( $name, 'unwatchedpages' );
  39         }
  40
  41         public function isExpensive() {
  42                 return true;
  43         }
  44
  45         function isSyndicated() {
  46                 return false;
  47         }
  48
  49         /**
  50          * Pre-cache page existence to speed up link generation
  51          *
  52          * @param IDatabase $db
  53          * @param ResultWrapper $res
  54          */
  55         public function preprocessResults( $db, $res ) {
  56                 if ( !$res->numRows() ) {
  57                         return;
  58                 }
  59
  60                 $batch = new LinkBatch();
  61                 foreach ( $res as $row ) {
  62                         $batch->add( $row->namespace, $row->title );
  63                 }
  64                 $batch->execute();
  65
  66                 $res->seek( 0 );
  67         }
  68
  69         public function getQueryInfo() {
  70                 $dbr = wfGetDB( DB_REPLICA );
  71                 return [
  72                         'tables' => [ 'page', 'watchlist' ],
  73                         'fields' => [
  74                                 'namespace' => 'page_namespace',
  75                                 'title' => 'page_title',
  76                                 'value' => 'page_namespace'
  77                         ],
  78                         'conds' => [
  79                                 'wl_title IS NULL',
  80                                 'page_is_redirect' => 0,
  81                                 'page_namespace != ' . $dbr->addQuotes( NS_MEDIAWIKI ),
  82                         ],
  83                         'join_conds' => [ 'watchlist' => [
  84                                 'LEFT JOIN', [ 'wl_title = page_title',
  85                                         'wl_namespace = page_namespace' ] ] ]
  86                 ];
  87         }
  88
  89         function sortDescending() {
  90                 return false;
  91         }
  92
  93         function getOrderFields() {
  94                 return [ 'page_namespace', 'page_title' ];
  95         }
  96
  97         /**
  98          * Add the JS
  99          * @param string|null $par
 100          */
 101         public function execute( $par ) {
 102                 parent::execute( $par );
 103                 $this->getOutput()->addModules( 'mediawiki.special.unwatchedPages' );
 104         }
 105
 106         /**
 107          * @param Skin $skin
 108          * @param object $result Result row
 109          * @return string
 110          */
 111         function formatResult( $skin, $result ) {
 112                 global $wgContLang;
 113
 114                 $nt = Title::makeTitleSafe( $result->namespace, $result->title );
 115                 if ( !$nt ) {
 116                         return Html::element( 'span', [ 'class' => 'mw-invalidtitle' ],
 117                                 Linker::getInvalidTitleDescription( $this->getContext(), $result->namespace, $result->title ) );
 118                 }
 119
 120                 $text = $wgContLang->convert( $nt->getPrefixedText() );
 121
 122                 $linkRenderer = $this->getLinkRenderer();
 123
 124                 $plink = $linkRenderer->makeKnownLink( $nt, $text );
 125                 $wlink = $linkRenderer->makeKnownLink(
 126                         $nt,
 127                         $this->msg( 'watch' )->text(),
 128                         [ 'class' => 'mw-watch-link' ],
 129                         [ 'action' => 'watch' ]
 130                 );
 131
 132                 return $this->getLanguage()->specialList( $plink, $wlink );
 133         }
 134
 135         protected function getGroupName() {
 136                 return 'maintenance';
 137         }
 138 }