includes/specials/pagers/CategoryPager.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  * @ingroup Pager
  20  */
  21 use MediaWiki\Linker\LinkRenderer;
  22
  23 /**
  24  * @ingroup Pager
  25  */
  26 class CategoryPager extends AlphabeticPager {
  27
  28         /**
  29          * @var LinkRenderer
  30          */
  31         protected $linkRenderer;
  32
  33         /**
  34          * @param IContextSource $context
  35          * @param string $from
  36          * @param LinkRenderer $linkRenderer
  37          */
  38         public function __construct( IContextSource $context, $from, LinkRenderer $linkRenderer
  39         ) {
  40                 parent::__construct( $context );
  41                 $from = str_replace( ' ', '_', $from );
  42                 if ( $from !== '' ) {
  43                         $from = Title::capitalize( $from, NS_CATEGORY );
  44                         $this->setOffset( $from );
  45                         $this->setIncludeOffset( true );
  46                 }
  47
  48                 $this->linkRenderer = $linkRenderer;
  49         }
  50
  51         function getQueryInfo() {
  52                 return [
  53                         'tables' => [ 'category' ],
  54                         'fields' => [ 'cat_title', 'cat_pages' ],
  55                         'conds' => [ 'cat_pages > 0' ],
  56                         'options' => [ 'USE INDEX' => 'cat_title' ],
  57                 ];
  58         }
  59
  60         function getIndexField() {
  61                 return 'cat_title';
  62         }
  63
  64         function getDefaultQuery() {
  65                 parent::getDefaultQuery();
  66                 unset( $this->mDefaultQuery['from'] );
  67
  68                 return $this->mDefaultQuery;
  69         }
  70
  71         /* Override getBody to apply LinksBatch on resultset before actually outputting anything. */
  72         public function getBody() {
  73                 $batch = new LinkBatch;
  74
  75                 $this->mResult->rewind();
  76
  77                 foreach ( $this->mResult as $row ) {
  78                         $batch->addObj( new TitleValue( NS_CATEGORY, $row->cat_title ) );
  79                 }
  80                 $batch->execute();
  81                 $this->mResult->rewind();
  82
  83                 return parent::getBody();
  84         }
  85
  86         function formatRow( $result ) {
  87                 $title = new TitleValue( NS_CATEGORY, $result->cat_title );
  88                 $text = $title->getText();
  89                 $link = $this->linkRenderer->makeLink( $title, $text );
  90
  91                 $count = $this->msg( 'nmembers' )->numParams( $result->cat_pages )->escaped();
  92                 return Html::rawElement( 'li', null, $this->getLanguage()->specialList( $link, $count ) ) . "\n";
  93         }
  94
  95         public function getStartForm( $from ) {
  96                 return Xml::tags(
  97                         'form',
  98                         [ 'method' => 'get', 'action' => wfScript() ],
  99                         Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) .
 100                         Xml::fieldset(
 101                                 $this->msg( 'categories' )->text(),
 102                                 Xml::inputLabel(
 103                                         $this->msg( 'categoriesfrom' )->text(),
 104                                         'from', 'from', 20, $from, [ 'class' => 'mw-ui-input-inline' ] ) .
 105                                 ' ' .
 106                                 Html::submitButton(
 107                                         $this->msg( 'categories-submit' )->text(),
 108                                         [], [ 'mw-ui-progressive' ]
 109                                 )
 110                         )
 111                 );
 112         }
 113 }