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