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 /**
  25  * A special page looking for page without any category.
  26  *
  27  * @ingroup SpecialPage
  28  * @todo FIXME: Make $requestedNamespace selectable, unify all subclasses into one
  29  */
  30 class UncategorizedPagesPage extends PageQueryPage {
  31         protected $requestedNamespace = false;
  32
  33         function __construct( $name = 'Uncategorizedpages' ) {
  34                 parent::__construct( $name );
  35         }
  36
  37         function sortDescending() {
  38                 return false;
  39         }
  40
  41         function isExpensive() {
  42                 return true;
  43         }
  44
  45         function isSyndicated() {
  46                 return false;
  47         }
  48
  49         function getQueryInfo() {
  50                 return [
  51                         'tables' => [ 'page', 'categorylinks' ],
  52                         'fields' => [
  53                                 'namespace' => 'page_namespace',
  54                                 'title' => 'page_title',
  55                                 'value' => 'page_title'
  56                         ],
  57                         // default for page_namespace is all content namespaces (if requestedNamespace is false)
  58                         // otherwise, page_namespace is requestedNamespace
  59                         'conds' => [
  60                                 'cl_from IS NULL',
  61                                 'page_namespace' => $this->requestedNamespace !== false
  62                                                 ? $this->requestedNamespace
  63                                                 : MWNamespace::getContentNamespaces(),
  64                                 'page_is_redirect' => 0
  65                         ],
  66                         'join_conds' => [
  67                                 'categorylinks' => [ 'LEFT JOIN', 'cl_from = page_id' ]
  68                         ]
  69                 ];
  70         }
  71
  72         function getOrderFields() {
  73                 // For some crazy reason ordering by a constant
  74                 // causes a filesort
  75                 if ( $this->requestedNamespace === false && count( MWNamespace::getContentNamespaces() ) > 1 ) {
  76                         return [ 'page_namespace', 'page_title' ];
  77                 }
  78
  79                 return [ 'page_title' ];
  80         }
  81
  82         protected function getGroupName() {
  83                 return 'maintenance';
  84         }
  85 }