includes/specials/SpecialBrokenRedirects.php

   1 <?php
   2 /**
   3  * Implements Special:Brokenredirects
   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  * A special page listing redirects tonon existent page. Those should be
  26  * fixed to point to an existing page.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class BrokenRedirectsPage extends PageQueryPage {
  31
  32         function __construct( $name = 'BrokenRedirects' ) {
  33                 parent::__construct( $name );
  34         }
  35
  36         function isExpensive() { return true; }
  37         function isSyndicated() { return false; }
  38         function sortDescending() { return false; }
  39
  40         function getPageHeader() {
  41                 return wfMsgExt( 'brokenredirectstext', array( 'parse' ) );
  42         }
  43
  44         function getQueryInfo() {
  45                 return array(
  46                         'tables' => array( 'redirect', 'p1' => 'page',
  47                                         'p2' => 'page' ),
  48                         'fields' => array( 'p1.page_namespace AS namespace',
  49                                         'p1.page_title AS title',
  50                                         'rd_namespace',
  51                                         'rd_title'
  52                         ),
  53                         'conds' => array( 'rd_namespace >= 0',
  54                                         'p2.page_namespace IS NULL'
  55                         ),
  56                         'join_conds' => array( 'p1' => array( 'LEFT JOIN', array(
  57                                                 'rd_from=p1.page_id',
  58                                         ) ),
  59                                         'p2' => array( 'LEFT JOIN', array(
  60                                                 'rd_namespace=p2.page_namespace',
  61                                                 'rd_title=p2.page_title'
  62                                         ) )
  63                         )
  64                 );
  65         }
  66
  67         function getOrderFields() {
  68                 return array ( 'rd_namespace', 'rd_title', 'rd_from' );
  69         }
  70
  71         function formatResult( $skin, $result ) {
  72                 global $wgUser, $wgContLang, $wgLang;
  73
  74                 $fromObj = Title::makeTitle( $result->namespace, $result->title );
  75                 if ( isset( $result->rd_title ) ) {
  76                         $toObj = Title::makeTitle( $result->rd_namespace, $result->rd_title );
  77                 } else {
  78                         $blinks = $fromObj->getBrokenLinksFrom(); # TODO: check for redirect, not for links
  79                         if ( $blinks ) {
  80                                 $toObj = $blinks[0];
  81                         } else {
  82                                 $toObj = false;
  83                         }
  84                 }
  85
  86                 // $toObj may very easily be false if the $result list is cached
  87                 if ( !is_object( $toObj ) ) {
  88                         return '<del>' . $skin->link( $fromObj ) . '</del>';
  89                 }
  90
  91                 $from = $skin->linkKnown(
  92                         $fromObj,
  93                         null,
  94                         array(),
  95                         array( 'redirect' => 'no' )
  96                 );
  97                 $links = array();
  98                 $links[] = $skin->linkKnown(
  99                         $fromObj,
 100                         wfMsgHtml( 'brokenredirects-edit' ),
 101                         array(),
 102                         array( 'action' => 'edit' )
 103                 );
 104                 $to   = $skin->link(
 105                         $toObj,
 106                         null,
 107                         array(),
 108                         array(),
 109                         array( 'broken' )
 110                 );
 111                 $arr = $wgContLang->getArrow();
 112
 113                 $out = $from . wfMsg( 'word-separator' );
 114
 115                 if( $wgUser->isAllowed( 'delete' ) ) {
 116                         $links[] = $skin->linkKnown(
 117                                 $fromObj,
 118                                 wfMsgHtml( 'brokenredirects-delete' ),
 119                                 array(),
 120                                 array( 'action' => 'delete' )
 121                         );
 122                 }
 123
 124                 $out .= wfMsg( 'parentheses', $wgLang->pipeList( $links ) );
 125                 $out .= " {$arr} {$to}";
 126                 return $out;
 127         }
 128 }