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
  48                          ON pl_namespace=page_namespace AND pl_title=page_title
  49                          WHERE page_namespace IS NULL
  50                          GROUP BY pl_namespace,pl_title
  51                          HAVING COUNT(*) > $count";
  52         }
  53
  54         /**
  55          * Cache page existence for performance
  56          */
  57         function preprocessResults( &$db, &$res ) {
  58                 $batch = new LinkBatch;
  59                 while ( $row = $db->fetchObject( $res ) )
  60                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  61                 $batch->execute();
  62
  63                 // Back to start for display
  64                 if ( $db->numRows( $res ) > 0 )
  65                         // If there are no rows we get an error seeking.
  66                         $db->dataSeek( $res, 0 );
  67         }
  68
  69
  70         function formatResult( $skin, $result ) {
  71                 global $wgContLang;
  72
  73                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  74
  75                 if( $this->isCached() ) {
  76                         # Check existence; which is stored in the link cache
  77                         if( !$title->exists() ) {
  78                                 # Make a redlink
  79                                 $pageLink = $skin->makeBrokenLinkObj( $title );
  80                         } else {
  81                                 # Make a struck-out blue link
  82                                 $pageLink = "<s>" . $skin->makeKnownLinkObj( $title ) . "</s>";
  83                         }
  84                 } else {
  85                         # Not cached? Don't bother checking existence; it can't
  86                         $pageLink = $skin->makeBrokenLinkObj( $title );
  87                 }
  88
  89                 # Make a link to "what links here" if it's required
  90                 $wlhLink = $this->nlinks
  91                                         ? " (" . $this->makeWlhLink( $title, $skin, wfMsgHtml( 'nlinks', $result->value ) ) . ")"
  92                                         : "";
  93
  94                 return "{$pageLink}{$wlhLink}";
  95         }
  96
  97         /**
  98          * Make a "what links here" link for a specified title
  99          * @param $title Title to make the link for
 100          * @param $skin Skin to use
 101          * @param $text Link text
 102          * @return string
 103          */
 104         function makeWlhLink( &$title, &$skin, $text ) {
 105                 $wlhTitle = Title::makeTitle( NS_SPECIAL, 'Whatlinkshere' );
 106                 return $skin->makeKnownLinkObj( $wlhTitle, $text, 'target=' . $title->getPrefixedUrl() );
 107         }
 108
 109 }
 110
 111 /**
 112  * constructor
 113  */
 114 function wfSpecialWantedpages( $par = null, $specialPage ) {
 115         $inc = $specialPage->including();
 116
 117         if ( $inc ) {
 118                 @list( $limit, $nlinks ) = explode( '/', $par, 2 );
 119                 $limit = (int)$limit;
 120                 $nlinks = $nlinks === 'nlinks';
 121                 $offset = 0;
 122         } else {
 123                 list( $limit, $offset ) = wfCheckLimits();
 124                 $nlinks = true;
 125         }
 126
 127         $wpp = new WantedPagesPage( $inc, $nlinks );
 128
 129         $wpp->doQuery( $offset, $limit, !$inc );
 130 }
 131
 132 ?>