includes/SpecialWantedpages.php

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