includes/SpecialWantedpages.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once 'QueryPage.php';
  12
  13 /**
  14  *
  15  * @package MediaWiki
  16  * @subpackage SpecialPage
  17  */
  18 class WantedPagesPage extends QueryPage {
  19         var $nlinks;
  20
  21         function WantedPagesPage( $inc = false, $nlinks = true ) {
  22                 $this->setListoutput( $inc );
  23                 $this->nlinks = $nlinks;
  24         }
  25
  26         function getName() {
  27                 return 'Wantedpages';
  28         }
  29
  30         function isExpensive() {
  31                 return true;
  32         }
  33         function isSyndicated() { return false; }
  34
  35         function getSQL() {
  36                 global $wgWantedPagesThreshold;
  37                 $count = $wgWantedPagesThreshold - 1;
  38                 $dbr =& wfGetDB( DB_SLAVE );
  39                 $pagelinks = $dbr->tableName( 'pagelinks' );
  40                 $page      = $dbr->tableName( 'page' );
  41                 return
  42                         "SELECT 'Wantedpages' AS type,
  43                                 pl_namespace AS namespace,
  44                                 pl_title AS title,
  45                                 COUNT(*) AS value
  46                          FROM $pagelinks
  47                          LEFT JOIN $page AS pg1
  48                          ON pl_namespace = pg1.page_namespace AND pl_title = pg1.page_title
  49                          LEFT JOIN $page AS pg2
  50                          ON pl_from = pg2.page_id
  51                          WHERE pg1.page_namespace IS NULL
  52                          AND pg2.page_namespace != 8
  53                          GROUP BY pl_namespace, pl_title
  54                          HAVING COUNT(*) > $count";
  55         }
  56
  57         /**
  58          * Cache page existence for performance
  59          */
  60         function preprocessResults( &$db, &$res ) {
  61                 $batch = new LinkBatch;
  62                 while ( $row = $db->fetchObject( $res ) )
  63                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  64                 $batch->execute();
  65
  66                 // Back to start for display
  67                 if ( $db->numRows( $res ) > 0 )
  68                         // If there are no rows we get an error seeking.
  69                         $db->dataSeek( $res, 0 );
  70         }
  71
  72
  73         function formatResult( $skin, $result ) {
  74                 global $wgLang;
  75
  76                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  77
  78                 if( $this->isCached() ) {
  79                         # Check existence; which is stored in the link cache
  80                         if( !$title->exists() ) {
  81                                 # Make a redlink
  82                                 $pageLink = $skin->makeBrokenLinkObj( $title );
  83                         } else {
  84                                 # Make a struck-out blue link
  85                                 $pageLink = "<s>" . $skin->makeKnownLinkObj( $title ) . "</s>";
  86                         }
  87                 } else {
  88                         # Not cached? Don't bother checking existence; it can't
  89                         $pageLink = $skin->makeBrokenLinkObj( $title );
  90                 }
  91
  92                 # Make a link to "what links here" if it's required
  93                 $wlhLink = $this->nlinks
  94                                         ? $this->makeWlhLink( $title, $skin, wfMsgHtml( 'nlinks',
  95                                                         $wgLang->formatNum( $result->value ) ) )
  96                                         : null;
  97
  98                 return wfSpecialList($pageLink, $wlhLink);
  99         }
 100
 101         /**
 102          * Make a "what links here" link for a specified title
 103          * @param $title Title to make the link for
 104          * @param $skin Skin to use
 105          * @param $text Link text
 106          * @return string
 107          */
 108         function makeWlhLink( &$title, &$skin, $text ) {
 109                 $wlhTitle = Title::makeTitle( NS_SPECIAL, 'Whatlinkshere' );
 110                 return $skin->makeKnownLinkObj( $wlhTitle, $text, 'target=' . $title->getPrefixedUrl() );
 111         }
 112
 113 }
 114
 115 /**
 116  * constructor
 117  */
 118 function wfSpecialWantedpages( $par = null, $specialPage ) {
 119         $inc = $specialPage->including();
 120
 121         if ( $inc ) {
 122                 @list( $limit, $nlinks ) = explode( '/', $par, 2 );
 123                 $limit = (int)$limit;
 124                 $nlinks = $nlinks === 'nlinks';
 125                 $offset = 0;
 126         } else {
 127                 list( $limit, $offset ) = wfCheckLimits();
 128                 $nlinks = true;
 129         }
 130
 131         $wpp = new WantedPagesPage( $inc, $nlinks );
 132
 133         $wpp->doQuery( $offset, $limit, !$inc );
 134 }
 135
 136 ?>