includes/specials/SpecialAllmessages.php

   1 <?php
   2 /**
   3  * Implements Special:Allmessages
   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  * Use this special page to get a list of the MediaWiki system messages.
  26  *
  27  * @file
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialAllmessages extends SpecialPage {
  31
  32         /**
  33          * @var AllmessagesTablePager
  34          */
  35         protected $table;
  36
  37         /**
  38          * Constructor
  39          */
  40         public function __construct() {
  41                 parent::__construct( 'Allmessages' );
  42         }
  43
  44         /**
  45          * Show the special page
  46          *
  47          * @param $par Mixed: parameter passed to the page or null
  48          */
  49         public function execute( $par ) {
  50                 $request = $this->getRequest();
  51                 $out = $this->getOutput();
  52
  53                 $this->setHeaders();
  54
  55                 global $wgUseDatabaseMessages;
  56                 if ( !$wgUseDatabaseMessages ) {
  57                         $out->addWikiMsg( 'allmessagesnotsupportedDB' );
  58                         return;
  59                 } else {
  60                         $this->outputHeader( 'allmessagestext' );
  61                 }
  62
  63                 $out->addModuleStyles( 'mediawiki.special' );
  64
  65                 $this->table = new AllmessagesTablePager(
  66                         $this,
  67                         array(),
  68                         wfGetLangObj( $request->getVal( 'lang', $par ) )
  69                 );
  70
  71                 $this->langcode = $this->table->lang->getCode();
  72
  73                 $out->addHTML( $this->table->buildForm() .
  74                         $this->table->getNavigationBar() .
  75                         $this->table->getBody() .
  76                         $this->table->getNavigationBar() );
  77
  78         }
  79
  80         protected function getGroupName() {
  81                 return 'wiki';
  82         }
  83 }
  84
  85 /**
  86  * Use TablePager for prettified output. We have to pretend that we're
  87  * getting data from a table when in fact not all of it comes from the database.
  88  */
  89 class AllmessagesTablePager extends TablePager {
  90
  91         protected $filter, $prefix, $langcode, $displayPrefix;
  92
  93         public $mLimitsShown;
  94
  95         /**
  96          * @var Language
  97          */
  98         public $lang;
  99
 100         /**
 101          * @var null|bool
 102          */
 103         public $custom;
 104
 105         function __construct( $page, $conds, $langObj = null ) {
 106                 parent::__construct( $page->getContext() );
 107                 $this->mIndexField = 'am_title';
 108                 $this->mPage = $page;
 109                 $this->mConds = $conds;
 110                 $this->mDefaultDirection = true; // always sort ascending
 111                 $this->mLimitsShown = array( 20, 50, 100, 250, 500, 5000 );
 112
 113                 global $wgContLang;
 114
 115                 $this->talk = $this->msg( 'talkpagelinktext' )->escaped();
 116
 117                 $this->lang = ( $langObj ? $langObj : $wgContLang );
 118                 $this->langcode = $this->lang->getCode();
 119                 $this->foreign = $this->langcode != $wgContLang->getCode();
 120
 121                 $request = $this->getRequest();
 122
 123                 $this->filter = $request->getVal( 'filter', 'all' );
 124                 if ( $this->filter === 'all' ) {
 125                         $this->custom = null; // So won't match in either case
 126                 } else {
 127                         $this->custom = ( $this->filter == 'unmodified' );
 128                 }
 129
 130                 $prefix = $this->getLanguage()->ucfirst( $request->getVal( 'prefix', '' ) );
 131                 $prefix = $prefix != '' ? Title::makeTitleSafe( NS_MEDIAWIKI, $request->getVal( 'prefix', null ) ) : null;
 132                 if ( $prefix !== null ) {
 133                         $this->displayPrefix = $prefix->getDBkey();
 134                         $this->prefix = '/^' . preg_quote( $this->displayPrefix ) . '/i';
 135                 } else {
 136                         $this->displayPrefix = false;
 137                         $this->prefix = false;
 138                 }
 139
 140                 // The suffix that may be needed for message names if we're in a
 141                 // different language (eg [[MediaWiki:Foo/fr]]: $suffix = '/fr'
 142                 if ( $this->foreign ) {
 143                         $this->suffix = '/' . $this->langcode;
 144                 } else {
 145                         $this->suffix = '';
 146                 }
 147         }
 148
 149         function buildForm() {
 150                 global $wgScript;
 151
 152                 $attrs = array( 'id' => 'mw-allmessages-form-lang', 'name' => 'lang' );
 153                 $msg = wfMessage( 'allmessages-language' );
 154                 $langSelect = Xml::languageSelector( $this->langcode, false, null, $attrs, $msg );
 155
 156                 $out = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'id' => 'mw-allmessages-form' ) ) .
 157                         Xml::fieldset( $this->msg( 'allmessages-filter-legend' )->text() ) .
 158                         Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) .
 159                         Xml::openElement( 'table', array( 'class' => 'mw-allmessages-table' ) ) . "\n" .
 160                         '<tr>
 161                                 <td class="mw-label">' .
 162                         Xml::label( $this->msg( 'allmessages-prefix' )->text(), 'mw-allmessages-form-prefix' ) .
 163                         "</td>\n
 164                         <td class=\"mw-input\">" .
 165                         Xml::input( 'prefix', 20, str_replace( '_', ' ', $this->displayPrefix ), array( 'id' => 'mw-allmessages-form-prefix' ) ) .
 166                         "</td>\n
 167                         </tr>
 168                         <tr>\n
 169                         <td class='mw-label'>" .
 170                         $this->msg( 'allmessages-filter' )->escaped() .
 171                         "</td>\n
 172                                 <td class='mw-input'>" .
 173                         Xml::radioLabel( $this->msg( 'allmessages-filter-unmodified' )->text(),
 174                                 'filter',
 175                                 'unmodified',
 176                                 'mw-allmessages-form-filter-unmodified',
 177                                 ( $this->filter == 'unmodified' )
 178                         ) .
 179                         Xml::radioLabel( $this->msg( 'allmessages-filter-all' )->text(),
 180                                 'filter',
 181                                 'all',
 182                                 'mw-allmessages-form-filter-all',
 183                                 ( $this->filter == 'all' )
 184                         ) .
 185                         Xml::radioLabel( $this->msg( 'allmessages-filter-modified' )->text(),
 186                                 'filter',
 187                                 'modified',
 188                                 'mw-allmessages-form-filter-modified',
 189                                 ( $this->filter == 'modified' )
 190                         ) .
 191                         "</td>\n
 192                         </tr>
 193                         <tr>\n
 194                                 <td class=\"mw-label\">" . $langSelect[0] . "</td>\n
 195                                 <td class=\"mw-input\">" . $langSelect[1] . "</td>\n
 196                         </tr>" .
 197
 198                         '<tr>
 199                                 <td class="mw-label">' .
 200                         Xml::label( $this->msg( 'table_pager_limit_label' )->text(), 'mw-table_pager_limit_label' ) .
 201                         '</td>
 202                         <td class="mw-input">' .
 203                         $this->getLimitSelect() .
 204                         '</td>
 205                         <tr>
 206                                 <td></td>
 207                                 <td>' .
 208                         Xml::submitButton( $this->msg( 'allmessages-filter-submit' )->text() ) .
 209                         "</td>\n
 210                         </tr>" .
 211
 212                         Xml::closeElement( 'table' ) .
 213                         $this->getHiddenFields( array( 'title', 'prefix', 'filter', 'lang', 'limit' ) ) .
 214                         Xml::closeElement( 'fieldset' ) .
 215                         Xml::closeElement( 'form' );
 216                 return $out;
 217         }
 218
 219         function getAllMessages( $descending ) {
 220                 wfProfileIn( __METHOD__ );
 221                 $messageNames = Language::getLocalisationCache()->getSubitemList( 'en', 'messages' );
 222                 if ( $descending ) {
 223                         rsort( $messageNames );
 224                 } else {
 225                         asort( $messageNames );
 226                 }
 227
 228                 // Normalise message names so they look like page titles
 229                 $messageNames = array_map( array( $this->lang, 'ucfirst' ), $messageNames );
 230
 231                 wfProfileOut( __METHOD__ );
 232                 return $messageNames;
 233         }
 234
 235         /**
 236          * Determine which of the MediaWiki and MediaWiki_talk namespace pages exist.
 237          * Returns array( 'pages' => ..., 'talks' => ... ), where the subarrays have
 238          * an entry for each existing page, with the key being the message name and
 239          * value arbitrary.
 240          *
 241          * @param array $messageNames
 242          * @param string $langcode What language code
 243          * @param bool $foreign Whether the $langcode is not the content language
 244          * @return array: a 'pages' and 'talks' array with the keys of existing pages
 245          */
 246         public static function getCustomisedStatuses( $messageNames, $langcode = 'en', $foreign = false ) {
 247                 // FIXME: This function should be moved to Language:: or something.
 248                 wfProfileIn( __METHOD__ . '-db' );
 249
 250                 $dbr = wfGetDB( DB_SLAVE );
 251                 $res = $dbr->select( 'page',
 252                         array( 'page_namespace', 'page_title' ),
 253                         array( 'page_namespace' => array( NS_MEDIAWIKI, NS_MEDIAWIKI_TALK ) ),
 254                         __METHOD__,
 255                         array( 'USE INDEX' => 'name_title' )
 256                 );
 257                 $xNames = array_flip( $messageNames );
 258
 259                 $pageFlags = $talkFlags = array();
 260
 261                 foreach ( $res as $s ) {
 262                         $exists = false;
 263                         if ( $foreign ) {
 264                                 $title = explode( '/', $s->page_title );
 265                                 if ( count( $title ) === 2 && $langcode == $title[1]
 266                                         && isset( $xNames[$title[0]] )
 267                                 ) {
 268                                         $exists = $title[0];
 269                                 }
 270                         } elseif ( isset( $xNames[$s->page_title] ) ) {
 271                                 $exists = $s->page_title;
 272                         }
 273                         if ( $exists && $s->page_namespace == NS_MEDIAWIKI ) {
 274                                 $pageFlags[$exists] = true;
 275                         } elseif ( $exists && $s->page_namespace == NS_MEDIAWIKI_TALK ) {
 276                                 $talkFlags[$exists] = true;
 277                         }
 278                 }
 279
 280                 wfProfileOut( __METHOD__ . '-db' );
 281
 282                 return array( 'pages' => $pageFlags, 'talks' => $talkFlags );
 283         }
 284
 285         /**
 286          *  This function normally does a database query to get the results; we need
 287          * to make a pretend result using a FakeResultWrapper.
 288          * @param string $offset
 289          * @param int $limit
 290          * @param bool $descending
 291          * @return FakeResultWrapper
 292          */
 293         function reallyDoQuery( $offset, $limit, $descending ) {
 294                 $result = new FakeResultWrapper( array() );
 295
 296                 $messageNames = $this->getAllMessages( $descending );
 297                 $statuses = self::getCustomisedStatuses( $messageNames, $this->langcode, $this->foreign );
 298
 299                 $count = 0;
 300                 foreach ( $messageNames as $key ) {
 301                         $customised = isset( $statuses['pages'][$key] );
 302                         if ( $customised !== $this->custom &&
 303                                 ( $descending && ( $key < $offset || !$offset ) || !$descending && $key > $offset ) &&
 304                                 ( ( $this->prefix && preg_match( $this->prefix, $key ) ) || $this->prefix === false )
 305                         ) {
 306                                 $actual = wfMessage( $key )->inLanguage( $this->langcode )->plain();
 307                                 $default = wfMessage( $key )->inLanguage( $this->langcode )->useDatabase( false )->plain();
 308                                 $result->result[] = array(
 309                                         'am_title' => $key,
 310                                         'am_actual' => $actual,
 311                                         'am_default' => $default,
 312                                         'am_customised' => $customised,
 313                                         'am_talk_exists' => isset( $statuses['talks'][$key] )
 314                                 );
 315                                 $count++;
 316                         }
 317
 318                         if ( $count == $limit ) {
 319                                 break;
 320                         }
 321                 }
 322                 return $result;
 323         }
 324
 325         function getStartBody() {
 326                 return Xml::openElement( 'table', array( 'class' => 'mw-datatable TablePager', 'id' => 'mw-allmessagestable' ) ) . "\n" .
 327                         "<thead><tr>
 328                                 <th rowspan=\"2\">" .
 329                         $this->msg( 'allmessagesname' )->escaped() . "
 330                                 </th>
 331                                 <th>" .
 332                         $this->msg( 'allmessagesdefault' )->escaped() .
 333                         "</th>
 334                         </tr>\n
 335                         <tr>
 336                                 <th>" .
 337                         $this->msg( 'allmessagescurrent' )->escaped() .
 338                         "</th>
 339                         </tr></thead><tbody>\n";
 340         }
 341
 342         function formatValue( $field, $value ) {
 343                 switch ( $field ) {
 344                         case 'am_title' :
 345                                 $title = Title::makeTitle( NS_MEDIAWIKI, $value . $this->suffix );
 346                                 $talk = Title::makeTitle( NS_MEDIAWIKI_TALK, $value . $this->suffix );
 347
 348                                 if ( $this->mCurrentRow->am_customised ) {
 349                                         $title = Linker::linkKnown( $title, $this->getLanguage()->lcfirst( $value ) );
 350                                 } else {
 351                                         $title = Linker::link(
 352                                                 $title,
 353                                                 $this->getLanguage()->lcfirst( $value ),
 354                                                 array(),
 355                                                 array(),
 356                                                 array( 'broken' )
 357                                         );
 358                                 }
 359                                 if ( $this->mCurrentRow->am_talk_exists ) {
 360                                         $talk = Linker::linkKnown( $talk, $this->talk );
 361                                 } else {
 362                                         $talk = Linker::link(
 363                                                 $talk,
 364                                                 $this->talk,
 365                                                 array(),
 366                                                 array(),
 367                                                 array( 'broken' )
 368                                         );
 369                                 }
 370                                 return $title . ' ' . $this->msg( 'parentheses' )->rawParams( $talk )->escaped();
 371
 372                         case 'am_default' :
 373                         case 'am_actual' :
 374                                 return Sanitizer::escapeHtmlAllowEntities( $value, ENT_QUOTES );
 375                 }
 376                 return '';
 377         }
 378
 379         function formatRow( $row ) {
 380                 // Do all the normal stuff
 381                 $s = parent::formatRow( $row );
 382
 383                 // But if there's a customised message, add that too.
 384                 if ( $row->am_customised ) {
 385                         $s .= Xml::openElement( 'tr', $this->getRowAttrs( $row, true ) );
 386                         $formatted = strval( $this->formatValue( 'am_actual', $row->am_actual ) );
 387                         if ( $formatted == '' ) {
 388                                 $formatted = '&#160;';
 389                         }
 390                         $s .= Xml::tags( 'td', $this->getCellAttrs( 'am_actual', $row->am_actual ), $formatted )
 391                                 . "</tr>\n";
 392                 }
 393                 return $s;
 394         }
 395
 396         function getRowAttrs( $row, $isSecond = false ) {
 397                 $arr = array();
 398                 if ( $row->am_customised ) {
 399                         $arr['class'] = 'allmessages-customised';
 400                 }
 401                 if ( !$isSecond ) {
 402                         $arr['id'] = Sanitizer::escapeId( 'msg_' . $this->getLanguage()->lcfirst( $row->am_title ) );
 403                 }
 404                 return $arr;
 405         }
 406
 407         function getCellAttrs( $field, $value ) {
 408                 if ( $this->mCurrentRow->am_customised && $field == 'am_title' ) {
 409                         return array( 'rowspan' => '2', 'class' => $field );
 410                 } elseif ( $field == 'am_title' ) {
 411                         return array( 'class' => $field );
 412                 } else {
 413                         return array( 'lang' => $this->langcode, 'dir' => $this->lang->getDir(), 'class' => $field );
 414                 }
 415         }
 416
 417         // This is not actually used, as getStartBody is overridden above
 418         function getFieldNames() {
 419                 return array(
 420                         'am_title' => $this->msg( 'allmessagesname' )->text(),
 421                         'am_default' => $this->msg( 'allmessagesdefault' )->text()
 422                 );
 423         }
 424
 425         function getTitle() {
 426                 return SpecialPage::getTitleFor( 'Allmessages', false );
 427         }
 428
 429         function isFieldSortable( $x ) {
 430                 return false;
 431         }
 432
 433         function getDefaultSort() {
 434                 return '';
 435         }
 436
 437         function getQueryInfo() {
 438                 return '';
 439         }
 440 }