includes/specials/SpecialPageLanguage.php

   1 <?php
   2 /**
   3  * Implements Special:PageLanguage
   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  * @author Kunal Grover
  23  * @since 1.24
  24  */
  25
  26 /**
  27  * Special page for changing the content language of a page
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class SpecialPageLanguage extends FormSpecialPage {
  32         /**
  33          * @var string URL to go to if language change successful
  34          */
  35         private $goToUrl;
  36
  37         public function __construct() {
  38                 parent::__construct( 'PageLanguage', 'pagelang' );
  39         }
  40
  41         protected function preText() {
  42                 $this->getOutput()->addModules( 'mediawiki.special.pageLanguage' );
  43         }
  44
  45         protected function getFormFields() {
  46                 // Get default from the subpage of Special page
  47                 $defaultName = $this->par;
  48
  49                 $page = array();
  50                 $page['pagename'] = array(
  51                         'type' => 'text',
  52                         'label-message' => 'pagelang-name',
  53                         'default' => $defaultName,
  54                 );
  55
  56                 // Options for whether to use the default language or select language
  57                 $selectoptions = array(
  58                         (string)$this->msg( 'pagelang-use-default' )->escaped() => 1,
  59                         (string)$this->msg( 'pagelang-select-lang' )->escaped() => 2,
  60                 );
  61                 $page['selectoptions'] = array(
  62                         'id' => 'mw-pl-options',
  63                         'type' => 'radio',
  64                         'options' => $selectoptions,
  65                         'default' => 1
  66                 );
  67
  68                 // Building a language selector
  69                 $userLang = $this->getLanguage()->getCode();
  70                 $languages = Language::fetchLanguageNames( $userLang, 'mwfile' );
  71                 ksort( $languages );
  72                 $options = array();
  73                 foreach ( $languages as $code => $name ) {
  74                         $options["$code - $name"] = $code;
  75                 }
  76
  77                 $page['language'] = array(
  78                         'id' => 'mw-pl-languageselector',
  79                         'cssclass' => 'mw-languageselector',
  80                         'type' => 'select',
  81                         'options' => $options,
  82                         'label-message' => 'pagelang-language',
  83                         'default' => $this->getConfig()->get( 'LanguageCode' ),
  84                 );
  85
  86                 return $page;
  87         }
  88
  89         protected function postText() {
  90                 if ( $this->par ) {
  91                         return $this->showLogFragment( $this->par );
  92                 }
  93                 return '';
  94         }
  95
  96         protected function getDisplayFormat() {
  97                 return 'vform';
  98         }
  99
 100         public function alterForm( HTMLForm $form ) {
 101                 Hooks::run( 'LanguageSelector', array( $this->getOutput(), 'mw-languageselector' ) );
 102         }
 103
 104         /**
 105          *
 106          * @param array $data
 107          * @return bool
 108          */
 109         public function onSubmit( array $data ) {
 110                 $title = Title::newFromText( $data['pagename'] );
 111
 112                 // Check if title is valid
 113                 if ( !$title ) {
 114                         return false;
 115                 }
 116
 117                 // Get the default language for the wiki
 118                 // Returns the default since the page is not loaded from DB
 119                 $defLang = $title->getPageLanguage()->getCode();
 120
 121                 $pageId = $title->getArticleID();
 122
 123                 // Check if article exists
 124                 if ( !$pageId ) {
 125                         return false;
 126                 }
 127
 128                 // Load the page language from DB
 129                 $dbw = wfGetDB( DB_MASTER );
 130                 $langOld = $dbw->selectField(
 131                         'page',
 132                         'page_lang',
 133                         array( 'page_id' => $pageId ),
 134                         __METHOD__
 135                 );
 136
 137                 // Url to redirect to after the operation
 138                 $this->goToUrl = $title->getFullURL();
 139
 140                 // Check if user wants to use default language
 141                 if ( $data['selectoptions'] == 1 ) {
 142                         $langNew = null;
 143                 } else {
 144                         $langNew = $data['language'];
 145                 }
 146
 147                 // No change in language
 148                 if ( $langNew === $langOld ) {
 149                         return false;
 150                 }
 151
 152                 // Hardcoded [def] if the language is set to null
 153                 $logOld = $langOld ? $langOld : $defLang . '[def]';
 154                 $logNew = $langNew ? $langNew : $defLang . '[def]';
 155
 156                 // Writing new page language to database
 157                 $dbw = wfGetDB( DB_MASTER );
 158                 $dbw->update(
 159                         'page',
 160                         array( 'page_lang' => $langNew ),
 161                         array(
 162                                 'page_id' => $pageId,
 163                                 'page_lang' => $langOld
 164                         ),
 165                         __METHOD__
 166                 );
 167
 168                 if ( !$dbw->affectedRows() ) {
 169                         return false;
 170                 }
 171
 172                 // Logging change of language
 173                 $logParams = array(
 174                         '4::oldlanguage' => $logOld,
 175                         '5::newlanguage' => $logNew
 176                 );
 177                 $entry = new ManualLogEntry( 'pagelang', 'pagelang' );
 178                 $entry->setPerformer( $this->getUser() );
 179                 $entry->setTarget( $title );
 180                 $entry->setParameters( $logParams );
 181
 182                 $logid = $entry->insert();
 183                 $entry->publish( $logid );
 184
 185                 return true;
 186         }
 187
 188         public function onSuccess() {
 189                 // Success causes a redirect
 190                 $this->getOutput()->redirect( $this->goToUrl );
 191         }
 192
 193         function showLogFragment( $title ) {
 194                 $moveLogPage = new LogPage( 'pagelang' );
 195                 $out1 = Xml::element( 'h2', null, $moveLogPage->getName()->text() );
 196                 $out2 = '';
 197                 LogEventsList::showLogExtract( $out2, 'pagelang', $title );
 198                 return $out1 . $out2;
 199         }
 200 }