includes/specialpage/WantedQueryPage.php

   1 <?php
   2 /**
   3  * Class definition for a wanted query page.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Class definition for a wanted query page like
  26  * WantedPages, WantedTemplates, etc
  27  * @ingroup SpecialPage
  28  */
  29 abstract class WantedQueryPage extends QueryPage {
  30         function isExpensive() {
  31                 return true;
  32         }
  33
  34         function isSyndicated() {
  35                 return false;
  36         }
  37
  38         /**
  39          * Cache page existence for performance
  40          * @param IDatabase $db
  41          * @param ResultWrapper $res
  42          */
  43         function preprocessResults( $db, $res ) {
  44                 $this->executeLBFromResultWrapper( $res );
  45         }
  46
  47         /**
  48          * Should formatResult() always check page existence, even if
  49          * the results are fresh?  This is a (hopefully temporary)
  50          * kluge for Special:WantedFiles, which may contain false
  51          * positives for files that exist e.g. in a shared repo (bug
  52          * 6220).
  53          * @return bool
  54          */
  55         function forceExistenceCheck() {
  56                 return false;
  57         }
  58
  59         /**
  60          * Format an individual result
  61          *
  62          * @param Skin $skin Skin to use for UI elements
  63          * @param object $result Result row
  64          * @return string
  65          */
  66         public function formatResult( $skin, $result ) {
  67                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  68                 if ( $title instanceof Title ) {
  69                         if ( $this->isCached() || $this->forceExistenceCheck() ) {
  70                                 $pageLink = $this->existenceCheck( $title )
  71                                         ? '<del>' . Linker::link( $title ) . '</del>'
  72                                         : Linker::link( $title );
  73                         } else {
  74                                 $pageLink = Linker::link(
  75                                         $title,
  76                                         null,
  77                                         [],
  78                                         [],
  79                                         [ 'broken' ]
  80                                 );
  81                         }
  82                         return $this->getLanguage()->specialList( $pageLink, $this->makeWlhLink( $title, $result ) );
  83                 } else {
  84                         return $this->msg( 'wantedpages-badtitle', $result->title )->escaped();
  85                 }
  86         }
  87
  88         /**
  89          * Does the Title currently exists
  90          *
  91          * This method allows a subclass to override this check
  92          * (For example, wantedfiles, would want to check if the file exists
  93          * not just that a page in the file namespace exists).
  94          *
  95          * This will only control if the link is crossed out. Whether or not the link
  96          * is blue vs red is controlled by if the title exists.
  97          *
  98          * @note This will only be run if the page is cached (ie $wgMiserMode = true)
  99          *   unless forceExistenceCheck() is true.
 100          * @since 1.24
 101          * @return bool
 102          */
 103         protected function existenceCheck( Title $title ) {
 104                 return $title->isKnown();
 105         }
 106
 107         /**
 108          * Make a "what links here" link for a given title
 109          *
 110          * @param Title $title Title to make the link for
 111          * @param object $result Result row
 112          * @return string
 113          */
 114         private function makeWlhLink( $title, $result ) {
 115                 $wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedText() );
 116                 $label = $this->msg( 'nlinks' )->numParams( $result->value )->escaped();
 117                 return Linker::link( $wlh, $label );
 118         }
 119 }