includes/specials/SpecialUncategorizedPages.php

   1 <?php
   2 /**
   3  * Implements Special:Uncategorizedpages
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 use MediaWiki\MediaWikiServices;
  25
  26 /**
  27  * A special page looking for page without any category.
  28  *
  29  * @ingroup SpecialPage
  30  * @todo FIXME: Make $requestedNamespace selectable, unify all subclasses into one
  31  */
  32 class SpecialUncategorizedPages extends PageQueryPage {
  33         /** @var int|false */
  34         protected $requestedNamespace = false;
  35
  36         function __construct( $name = 'Uncategorizedpages' ) {
  37                 parent::__construct( $name );
  38                 $this->addHelpLink( 'Help:Categories' );
  39         }
  40
  41         function sortDescending() {
  42                 return false;
  43         }
  44
  45         function isExpensive() {
  46                 return true;
  47         }
  48
  49         function isSyndicated() {
  50                 return false;
  51         }
  52
  53         function getQueryInfo() {
  54                 return [
  55                         'tables' => [ 'page', 'categorylinks' ],
  56                         'fields' => [
  57                                 'namespace' => 'page_namespace',
  58                                 'title' => 'page_title',
  59                         ],
  60                         // default for page_namespace is all content namespaces (if requestedNamespace is false)
  61                         // otherwise, page_namespace is requestedNamespace
  62                         'conds' => [
  63                                 'cl_from IS NULL',
  64                                 'page_namespace' => $this->requestedNamespace !== false
  65                                                 ? $this->requestedNamespace
  66                                                 : MediaWikiServices::getInstance()->getNamespaceInfo()->
  67                                                         getContentNamespaces(),
  68                                 'page_is_redirect' => 0
  69                         ],
  70                         'join_conds' => [
  71                                 'categorylinks' => [ 'LEFT JOIN', 'cl_from = page_id' ]
  72                         ]
  73                 ];
  74         }
  75
  76         function getOrderFields() {
  77                 // For some crazy reason ordering by a constant
  78                 // causes a filesort
  79                 if ( $this->requestedNamespace === false &&
  80                         count( MediaWikiServices::getInstance()->getNamespaceInfo()->
  81                                 getContentNamespaces() ) > 1
  82                 ) {
  83                         return [ 'page_namespace', 'page_title' ];
  84                 }
  85
  86                 return [ 'page_title' ];
  87         }
  88
  89         protected function getGroupName() {
  90                 return 'maintenance';
  91         }
  92 }