includes/specials/SpecialCategories.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 function wfSpecialCategories( $par=null ) {
   8         global $wgOut, $wgRequest;
   9
  10         if( $par == '' ) {
  11                 $from = $wgRequest->getText( 'from' );
  12         } else {
  13                 $from = $par;
  14         }
  15         $cap = new CategoryPager( $from );
  16         $cap->doQuery();
  17         $wgOut->addHTML(
  18                 XML::openElement( 'div', array('class' => 'mw-spcontent') ) .
  19                 wfMsgExt( 'categoriespagetext', array( 'parse' ), $cap->getNumRows() ) .
  20                 $cap->getStartForm( $from ) .
  21                 $cap->getNavigationBar() .
  22                 '<ul>' . $cap->getBody() . '</ul>' .
  23                 $cap->getNavigationBar() .
  24                 XML::closeElement( 'div' )
  25         );
  26 }
  27
  28 /**
  29  * TODO: Allow sorting by count.  We need to have a unique index to do this
  30  * properly.
  31  *
  32  * @ingroup SpecialPage Pager
  33  */
  34 class CategoryPager extends AlphabeticPager {
  35         function __construct( $from ) {
  36                 parent::__construct();
  37                 $from = str_replace( ' ', '_', $from );
  38                 if( $from !== '' ) {
  39                         $from = Title::capitalize( $from, NS_CATEGORY );
  40                         $this->mOffset = $from;
  41                 }
  42         }
  43
  44         function getQueryInfo() {
  45                 return array(
  46                         'tables' => array( 'category' ),
  47                         'fields' => array( 'cat_title','cat_pages' ),
  48                         'conds' => array( 'cat_pages > 0' ),
  49                         'options' => array( 'USE INDEX' => 'cat_title' ),
  50                 );
  51         }
  52
  53         function getIndexField() {
  54 #               return array( 'abc' => 'cat_title', 'count' => 'cat_pages' );
  55                 return 'cat_title';
  56         }
  57
  58         function getDefaultQuery() {
  59                 parent::getDefaultQuery();
  60                 unset( $this->mDefaultQuery['from'] );
  61                 return $this->mDefaultQuery;
  62         }
  63 #       protected function getOrderTypeMessages() {
  64 #               return array( 'abc' => 'special-categories-sort-abc',
  65 #                       'count' => 'special-categories-sort-count' );
  66 #       }
  67
  68         protected function getDefaultDirections() {
  69 #               return array( 'abc' => false, 'count' => true );
  70                 return false;
  71         }
  72
  73         /* Override getBody to apply LinksBatch on resultset before actually outputting anything. */
  74         public function getBody() {
  75                 $batch = new LinkBatch;
  76
  77                 $this->mResult->rewind();
  78
  79                 while ( $row = $this->mResult->fetchObject() ) {
  80                         $batch->addObj( Title::makeTitleSafe( NS_CATEGORY, $row->cat_title ) );
  81                 }
  82                 $batch->execute();
  83                 $this->mResult->rewind();
  84                 return parent::getBody();
  85         }
  86
  87         function formatRow($result) {
  88                 global $wgLang;
  89                 $title = Title::makeTitle( NS_CATEGORY, $result->cat_title );
  90                 $titleText = $this->getSkin()->link( $title, htmlspecialchars( $title->getText() ) );
  91                 $count = wfMsgExt( 'nmembers', array( 'parsemag', 'escape' ),
  92                                 $wgLang->formatNum( $result->cat_pages ) );
  93                 return Xml::tags('li', null, "$titleText ($count)" ) . "\n";
  94         }
  95
  96         public function getStartForm( $from ) {
  97                 global $wgScript;
  98                 $t = SpecialPage::getTitleFor( 'Categories' );
  99
 100                 return
 101                         Xml::tags( 'form', array( 'method' => 'get', 'action' => $wgScript ),
 102                                 Xml::hidden( 'title', $t->getPrefixedText() ) .
 103                                 Xml::fieldset( wfMsg( 'categories' ),
 104                                         Xml::inputLabel( wfMsg( 'categoriesfrom' ),
 105                                                 'from', 'from', 20, $from ) .
 106                                         ' ' .
 107                                         Xml::submitButton( wfMsg( 'allpagessubmit' ) ) ) );
 108         }
 109 }