includes/page/ImagePage.php

   1 <?php
   2 /**
   3  * Special handling for file description pages.
   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  */
  22
  23 use MediaWiki\MediaWikiServices;
  24 use Wikimedia\Rdbms\ResultWrapper;
  25
  26 /**
  27  * Class for viewing MediaWiki file description pages
  28  *
  29  * @ingroup Media
  30  */
  31 class ImagePage extends Article {
  32         /** @var File|false */
  33         private $displayImg;
  34
  35         /** @var FileRepo */
  36         private $repo;
  37
  38         /** @var bool */
  39         private $fileLoaded;
  40
  41         /** @var bool */
  42         protected $mExtraDescription = false;
  43
  44         /**
  45          * @var WikiFilePage
  46          */
  47         protected $mPage;
  48
  49         /**
  50          * @param Title $title
  51          * @return WikiFilePage
  52          */
  53         protected function newPage( Title $title ) {
  54                 // Overload mPage with a file-specific page
  55                 return new WikiFilePage( $title );
  56         }
  57
  58         /**
  59          * @param File $file
  60          * @return void
  61          */
  62         public function setFile( $file ) {
  63                 $this->mPage->setFile( $file );
  64                 $this->displayImg = $file;
  65                 $this->fileLoaded = true;
  66         }
  67
  68         protected function loadFile() {
  69                 if ( $this->fileLoaded ) {
  70                         return;
  71                 }
  72                 $this->fileLoaded = true;
  73
  74                 $this->displayImg = $img = false;
  75
  76                 Hooks::run( 'ImagePageFindFile', [ $this, &$img, &$this->displayImg ] );
  77                 if ( !$img ) { // not set by hook?
  78                         $services = MediaWikiServices::getInstance();
  79                         $img = $services->getRepoGroup()->findFile( $this->getTitle() );
  80                         if ( !$img ) {
  81                                 $img = $services->getRepoGroup()->getLocalRepo()->newFile( $this->getTitle() );
  82                         }
  83                 }
  84                 $this->mPage->setFile( $img );
  85                 if ( !$this->displayImg ) { // not set by hook?
  86                         $this->displayImg = $img;
  87                 }
  88                 $this->repo = $img->getRepo();
  89         }
  90
  91         public function view() {
  92                 global $wgShowEXIF;
  93
  94                 // For action=render, include body text only; none of the image extras
  95                 if ( $this->viewIsRenderAction ) {
  96                         parent::view();
  97                         return;
  98                 }
  99
 100                 $out = $this->getContext()->getOutput();
 101                 $request = $this->getContext()->getRequest();
 102                 $diff = $request->getVal( 'diff' );
 103                 $diffOnly = $request->getBool(
 104                         'diffonly',
 105                         $this->getContext()->getUser()->getOption( 'diffonly' )
 106                 );
 107
 108                 if ( $this->getTitle()->getNamespace() != NS_FILE || ( $diff !== null && $diffOnly ) ) {
 109                         parent::view();
 110                         return;
 111                 }
 112
 113                 $this->loadFile();
 114
 115                 if ( $this->getTitle()->getNamespace() == NS_FILE && $this->mPage->getFile()->getRedirected() ) {
 116                         if ( $this->getTitle()->getDBkey() == $this->mPage->getFile()->getName() || $diff !== null ) {
 117                                 $request->setVal( 'diffonly', 'true' );
 118                         }
 119
 120                         parent::view();
 121                         return;
 122                 }
 123
 124                 if ( $wgShowEXIF && $this->displayImg->exists() ) {
 125                         // @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
 126                         $formattedMetadata = $this->displayImg->formatMetadata( $this->getContext() );
 127                         $showmeta = $formattedMetadata !== false;
 128                 } else {
 129                         $showmeta = false;
 130                 }
 131
 132                 if ( !$diff && $this->displayImg->exists() ) {
 133                         $out->addHTML( $this->showTOC( $showmeta ) );
 134                 }
 135
 136                 if ( !$diff ) {
 137                         $this->openShowImage();
 138                 }
 139
 140                 # No need to display noarticletext, we use our own message, output in openShowImage()
 141                 if ( $this->mPage->getId() ) {
 142                         # NS_FILE is in the user language, but this section (the actual wikitext)
 143                         # should be in page content language
 144                         $pageLang = $this->getTitle()->getPageViewLanguage();
 145                         $out->addHTML( Xml::openElement( 'div', [ 'id' => 'mw-imagepage-content',
 146                                 'lang' => $pageLang->getHtmlCode(), 'dir' => $pageLang->getDir(),
 147                                 'class' => 'mw-content-' . $pageLang->getDir() ] ) );
 148
 149                         parent::view();
 150
 151                         $out->addHTML( Xml::closeElement( 'div' ) );
 152                 } else {
 153                         # Just need to set the right headers
 154                         $out->setArticleFlag( true );
 155                         $out->setPageTitle( $this->getTitle()->getPrefixedText() );
 156                         $this->mPage->doViewUpdates( $this->getContext()->getUser(), $this->getOldID() );
 157                 }
 158
 159                 # Show shared description, if needed
 160                 if ( $this->mExtraDescription ) {
 161                         $fol = $this->getContext()->msg( 'shareddescriptionfollows' );
 162                         if ( !$fol->isDisabled() ) {
 163                                 $out->addWikiTextAsInterface( $fol->plain() );
 164                         }
 165                         $out->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . "</div>\n" );
 166                 }
 167
 168                 $this->closeShowImage();
 169                 $this->imageHistory();
 170                 // TODO: Cleanup the following
 171
 172                 $out->addHTML( Xml::element( 'h2',
 173                         [ 'id' => 'filelinks' ],
 174                                 $this->getContext()->msg( 'imagelinks' )->text() ) . "\n" );
 175                 $this->imageDupes();
 176                 # @todo FIXME: For some freaky reason, we can't redirect to foreign images.
 177                 # Yet we return metadata about the target. Definitely an issue in the FileRepo
 178                 $this->imageLinks();
 179
 180                 # Allow extensions to add something after the image links
 181                 $html = '';
 182                 Hooks::run( 'ImagePageAfterImageLinks', [ $this, &$html ] );
 183                 if ( $html ) {
 184                         $out->addHTML( $html );
 185                 }
 186
 187                 if ( $showmeta ) {
 188                         $out->addHTML( Xml::element(
 189                                 'h2',
 190                                 [ 'id' => 'metadata' ],
 191                                         $this->getContext()->msg( 'metadata' )->text() ) . "\n" );
 192                         $out->wrapWikiTextAsInterface(
 193                                 'mw-imagepage-section-metadata',
 194                                 $this->makeMetadataTable( $formattedMetadata )
 195                         );
 196                         $out->addModules( [ 'mediawiki.action.view.metadata' ] );
 197                 }
 198
 199                 // Add remote Filepage.css
 200                 if ( !$this->repo->isLocal() ) {
 201                         $css = $this->repo->getDescriptionStylesheetUrl();
 202                         if ( $css ) {
 203                                 $out->addStyle( $css );
 204                         }
 205                 }
 206
 207                 $out->addModuleStyles( [
 208                         'filepage', // always show the local local Filepage.css, T31277
 209                         'mediawiki.action.view.filepage', // Add MediaWiki styles for a file page
 210                 ] );
 211         }
 212
 213         /**
 214          * @return File
 215          */
 216         public function getDisplayedFile() {
 217                 $this->loadFile();
 218                 return $this->displayImg;
 219         }
 220
 221         /**
 222          * Create the TOC
 223          *
 224          * @param bool $metadata Whether or not to show the metadata link
 225          * @return string
 226          */
 227         protected function showTOC( $metadata ) {
 228                 $r = [
 229                         '<li><a href="#file">' . $this->getContext()->msg( 'file-anchor-link' )->escaped() . '</a></li>',
 230                         '<li><a href="#filehistory">' . $this->getContext()->msg( 'filehist' )->escaped() . '</a></li>',
 231                         '<li><a href="#filelinks">' . $this->getContext()->msg( 'imagelinks' )->escaped() . '</a></li>',
 232                 ];
 233
 234                 Hooks::run( 'ImagePageShowTOC', [ $this, &$r ] );
 235
 236                 if ( $metadata ) {
 237                         $r[] = '<li><a href="#metadata">' .
 238                                 $this->getContext()->msg( 'metadata' )->escaped() .
 239                                 '</a></li>';
 240                 }
 241
 242                 return '<ul id="filetoc">' . implode( "\n", $r ) . '</ul>';
 243         }
 244
 245         /**
 246          * Make a table with metadata to be shown in the output page.
 247          *
 248          * @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
 249          *
 250          * @param array $metadata The array containing the Exif data
 251          * @return string The metadata table. This is treated as Wikitext (!)
 252          */
 253         protected function makeMetadataTable( $metadata ) {
 254                 $r = $this->getContext()->msg( 'metadata-help' )->plain();
 255                 // Intial state is collapsed
 256                 // see filepage.css and mediawiki.action.view.metadata module.
 257                 $r .= "<table id=\"mw_metadata\" class=\"mw_metadata collapsed\">\n";
 258                 foreach ( $metadata as $type => $stuff ) {
 259                         foreach ( $stuff as $v ) {
 260                                 $class = str_replace( ' ', '_', $v['id'] );
 261                                 if ( $type == 'collapsed' ) {
 262                                         $class .= ' mw-metadata-collapsible';
 263                                 }
 264                                 $r .= Html::rawElement( 'tr',
 265                                         [ 'class' => $class ],
 266                                         Html::rawElement( 'th', [], $v['name'] )
 267                                                 . Html::rawElement( 'td', [], $v['value'] )
 268                                 );
 269                         }
 270                 }
 271                 $r .= "</table>\n";
 272                 return $r;
 273         }
 274
 275         /**
 276          * Overloading Article's getEmptyPageParserOutput method.
 277          *
 278          * Omit noarticletext if sharedupload; text will be fetched from the
 279          * shared upload server if possible.
 280          *
 281          * @param ParserOptions $options
 282          * @return ParserOutput
 283          */
 284         public function getEmptyPageParserOutput( ParserOptions $options ) {
 285                 $this->loadFile();
 286                 if ( $this->mPage->getFile() && !$this->mPage->getFile()->isLocal() && $this->getId() == 0 ) {
 287                         return new ParserOutput();
 288                 }
 289                 return parent::getEmptyPageParserOutput( $options );
 290         }
 291
 292         /**
 293          * Returns language code to be used for dispaying the image, based on request context and
 294          * languages available in the file.
 295          *
 296          * @param WebRequest $request
 297          * @param File $file
 298          * @return string|null
 299          */
 300         private function getLanguageForRendering( WebRequest $request, File $file ) {
 301                 $handler = $file->getHandler();
 302                 if ( !$handler ) {
 303                         return null;
 304                 }
 305
 306                 $config = MediaWikiServices::getInstance()->getMainConfig();
 307                 $requestLanguage = $request->getVal( 'lang', $config->get( 'LanguageCode' ) );
 308                 if ( $handler->validateParam( 'lang', $requestLanguage ) ) {
 309                         return $file->getMatchedLanguage( $requestLanguage );
 310                 }
 311
 312                 return $handler->getDefaultRenderLanguage( $file );
 313         }
 314
 315         protected function openShowImage() {
 316                 global $wgEnableUploads, $wgSend404Code, $wgSVGMaxSize;
 317
 318                 $this->loadFile();
 319                 $out = $this->getContext()->getOutput();
 320                 $user = $this->getContext()->getUser();
 321                 $lang = $this->getContext()->getLanguage();
 322                 $dirmark = $lang->getDirMarkEntity();
 323                 $request = $this->getContext()->getRequest();
 324
 325                 list( $maxWidth, $maxHeight ) = $this->getImageLimitsFromOption( $user, 'imagesize' );
 326
 327                 if ( $this->displayImg->exists() ) {
 328                         # image
 329                         $page = $request->getIntOrNull( 'page' );
 330                         if ( is_null( $page ) ) {
 331                                 $params = [];
 332                                 $page = 1;
 333                         } else {
 334                                 $params = [ 'page' => $page ];
 335                         }
 336
 337                         $renderLang = $this->getLanguageForRendering( $request, $this->displayImg );
 338                         if ( !is_null( $renderLang ) ) {
 339                                 $params['lang'] = $renderLang;
 340                         }
 341
 342                         $width_orig = $this->displayImg->getWidth( $page );
 343                         $width = $width_orig;
 344                         $height_orig = $this->displayImg->getHeight( $page );
 345                         $height = $height_orig;
 346
 347                         $filename = wfEscapeWikiText( $this->displayImg->getName() );
 348                         $linktext = $filename;
 349
 350                         // Avoid PHP 7.1 warning from passing $this by reference
 351                         $imagePage = $this;
 352
 353                         Hooks::run( 'ImageOpenShowImageInlineBefore', [ &$imagePage, &$out ] );
 354
 355                         if ( $this->displayImg->allowInlineDisplay() ) {
 356                                 # image
 357                                 # "Download high res version" link below the image
 358                                 # $msgsize = $this->getContext()->msg( 'file-info-size', $width_orig, $height_orig,
 359                                 #   Language::formatSize( $this->displayImg->getSize() ), $mime )->escaped();
 360                                 # We'll show a thumbnail of this image
 361                                 if ( $width > $maxWidth || $height > $maxHeight || $this->displayImg->isVectorized() ) {
 362                                         list( $width, $height ) = $this->getDisplayWidthHeight(
 363                                                 $maxWidth, $maxHeight, $width, $height
 364                                         );
 365                                         $linktext = $this->getContext()->msg( 'show-big-image' )->escaped();
 366
 367                                         $thumbSizes = $this->getThumbSizes( $width_orig, $height_orig );
 368                                         # Generate thumbnails or thumbnail links as needed...
 369                                         $otherSizes = [];
 370                                         foreach ( $thumbSizes as $size ) {
 371                                                 // We include a thumbnail size in the list, if it is
 372                                                 // less than or equal to the original size of the image
 373                                                 // asset ($width_orig/$height_orig). We also exclude
 374                                                 // the current thumbnail's size ($width/$height)
 375                                                 // since that is added to the message separately, so
 376                                                 // it can be denoted as the current size being shown.
 377                                                 // Vectorized images are limited by $wgSVGMaxSize big,
 378                                                 // so all thumbs less than or equal that are shown.
 379                                                 if ( ( ( $size[0] <= $width_orig && $size[1] <= $height_orig )
 380                                                                 || ( $this->displayImg->isVectorized()
 381                                                                         && max( $size[0], $size[1] ) <= $wgSVGMaxSize )
 382                                                         )
 383                                                         && $size[0] != $width && $size[1] != $height
 384                                                 ) {
 385                                                         $sizeLink = $this->makeSizeLink( $params, $size[0], $size[1] );
 386                                                         if ( $sizeLink ) {
 387                                                                 $otherSizes[] = $sizeLink;
 388                                                         }
 389                                                 }
 390                                         }
 391                                         $otherSizes = array_unique( $otherSizes );
 392
 393                                         $sizeLinkBigImagePreview = $this->makeSizeLink( $params, $width, $height );
 394                                         $msgsmall = $this->getThumbPrevText( $params, $sizeLinkBigImagePreview );
 395                                         if ( count( $otherSizes ) ) {
 396                                                 $msgsmall .= ' ' .
 397                                                 Html::rawElement(
 398                                                         'span',
 399                                                         [ 'class' => 'mw-filepage-other-resolutions' ],
 400                                                         $this->getContext()->msg( 'show-big-image-other' )
 401                                                                 ->rawParams( $lang->pipeList( $otherSizes ) )
 402                                                                 ->params( count( $otherSizes ) )
 403                                                                 ->parse()
 404                                                 );
 405                                         }
 406                                 } elseif ( $width == 0 && $height == 0 ) {
 407                                         # Some sort of audio file that doesn't have dimensions
 408                                         # Don't output a no hi res message for such a file
 409                                         $msgsmall = '';
 410                                 } else {
 411                                         # Image is small enough to show full size on image page
 412                                         $msgsmall = $this->getContext()->msg( 'file-nohires' )->parse();
 413                                 }
 414
 415                                 $params['width'] = $width;
 416                                 $params['height'] = $height;
 417                                 $thumbnail = $this->displayImg->transform( $params );
 418                                 Linker::processResponsiveImages( $this->displayImg, $thumbnail, $params );
 419
 420                                 $anchorclose = Html::rawElement(
 421                                         'div',
 422                                         [ 'class' => 'mw-filepage-resolutioninfo' ],
 423                                         $msgsmall
 424                                 );
 425
 426                                 $isMulti = $this->displayImg->isMultipage() && $this->displayImg->pageCount() > 1;
 427                                 if ( $isMulti ) {
 428                                         $out->addModules( 'mediawiki.page.image.pagination' );
 429                                         $out->addHTML( '<table class="multipageimage"><tr><td>' );
 430                                 }
 431
 432                                 if ( $thumbnail ) {
 433                                         $options = [
 434                                                 'alt' => $this->displayImg->getTitle()->getPrefixedText(),
 435                                                 'file-link' => true,
 436                                         ];
 437                                         $out->addHTML( '<div class="fullImageLink" id="file">' .
 438                                                 $thumbnail->toHtml( $options ) .
 439                                                 $anchorclose . "</div>\n" );
 440                                 }
 441
 442                                 if ( $isMulti ) {
 443                                         $count = $this->displayImg->pageCount();
 444
 445                                         if ( $page > 1 ) {
 446                                                 $label = $this->getContext()->msg( 'imgmultipageprev' )->text();
 447                                                 // on the client side, this link is generated in ajaxifyPageNavigation()
 448                                                 // in the mediawiki.page.image.pagination module
 449                                                 $link = Linker::linkKnown(
 450                                                         $this->getTitle(),
 451                                                         htmlspecialchars( $label ),
 452                                                         [],
 453                                                         [ 'page' => $page - 1 ]
 454                                                 );
 455                                                 $thumb1 = Linker::makeThumbLinkObj(
 456                                                         $this->getTitle(),
 457                                                         $this->displayImg,
 458                                                         $link,
 459                                                         $label,
 460                                                         'none',
 461                                                         [ 'page' => $page - 1 ]
 462                                                 );
 463                                         } else {
 464                                                 $thumb1 = '';
 465                                         }
 466
 467                                         if ( $page < $count ) {
 468                                                 $label = $this->getContext()->msg( 'imgmultipagenext' )->text();
 469                                                 $link = Linker::linkKnown(
 470                                                         $this->getTitle(),
 471                                                         htmlspecialchars( $label ),
 472                                                         [],
 473                                                         [ 'page' => $page + 1 ]
 474                                                 );
 475                                                 $thumb2 = Linker::makeThumbLinkObj(
 476                                                         $this->getTitle(),
 477                                                         $this->displayImg,
 478                                                         $link,
 479                                                         $label,
 480                                                         'none',
 481                                                         [ 'page' => $page + 1 ]
 482                                                 );
 483                                         } else {
 484                                                 $thumb2 = '';
 485                                         }
 486
 487                                         global $wgScript;
 488
 489                                         $formParams = [
 490                                                 'name' => 'pageselector',
 491                                                 'action' => $wgScript,
 492                                         ];
 493                                         $options = [];
 494                                         for ( $i = 1; $i <= $count; $i++ ) {
 495                                                 $options[] = Xml::option( $lang->formatNum( $i ), $i, $i == $page );
 496                                         }
 497                                         $select = Xml::tags( 'select',
 498                                                 [ 'id' => 'pageselector', 'name' => 'page' ],
 499                                                 implode( "\n", $options ) );
 500
 501                                         $out->addHTML(
 502                                                 '</td><td><div class="multipageimagenavbox">' .
 503                                                 Xml::openElement( 'form', $formParams ) .
 504                                                 Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
 505                                                 $this->getContext()->msg( 'imgmultigoto' )->rawParams( $select )->parse() .
 506                                                 $this->getContext()->msg( 'word-separator' )->escaped() .
 507                                                 Xml::submitButton( $this->getContext()->msg( 'imgmultigo' )->text() ) .
 508                                                 Xml::closeElement( 'form' ) .
 509                                                 "<hr />$thumb1\n$thumb2<br style=\"clear: both\" /></div></td></tr></table>"
 510                                         );
 511                                 }
 512                         } elseif ( $this->displayImg->isSafeFile() ) {
 513                                 # if direct link is allowed but it's not a renderable image, show an icon.
 514                                 $icon = $this->displayImg->iconThumb();
 515
 516                                 $out->addHTML( '<div class="fullImageLink" id="file">' .
 517                                         $icon->toHtml( [ 'file-link' => true ] ) .
 518                                         "</div>\n" );
 519                         }
 520
 521                         $longDesc = $this->getContext()->msg( 'parentheses', $this->displayImg->getLongDesc() )->text();
 522
 523                         $handler = $this->displayImg->getHandler();
 524
 525                         // If this is a filetype with potential issues, warn the user.
 526                         if ( $handler ) {
 527                                 $warningConfig = $handler->getWarningConfig( $this->displayImg );
 528
 529                                 if ( $warningConfig !== null ) {
 530                                         // The warning will be displayed via CSS and JavaScript.
 531                                         // We just need to tell the client side what message to use.
 532                                         $output = $this->getContext()->getOutput();
 533                                         $output->addJsConfigVars( 'wgFileWarning', $warningConfig );
 534                                         $output->addModules( $warningConfig['module'] );
 535                                         $output->addModules( 'mediawiki.filewarning' );
 536                                 }
 537                         }
 538
 539                         $medialink = "[[Media:$filename|$linktext]]";
 540
 541                         if ( !$this->displayImg->isSafeFile() ) {
 542                                 $warning = $this->getContext()->msg( 'mediawarning' )->plain();
 543                                 // dirmark is needed here to separate the file name, which
 544                                 // most likely ends in Latin characters, from the description,
 545                                 // which may begin with the file type. In RTL environment
 546                                 // this will get messy.
 547                                 // The dirmark, however, must not be immediately adjacent
 548                                 // to the filename, because it can get copied with it.
 549                                 // See T27277.
 550                                 // phpcs:disable Generic.Files.LineLength
 551                                 $out->wrapWikiTextAsInterface( 'fullMedia', <<<EOT
 552 <span class="dangerousLink">{$medialink}</span> $dirmark<span class="fileInfo">$longDesc</span>
 553 EOT
 554                                 );
 555                                 // phpcs:enable
 556                                 $out->wrapWikiTextAsInterface( 'mediaWarning', $warning );
 557                         } else {
 558                                 $out->wrapWikiTextAsInterface( 'fullMedia', <<<EOT
 559 {$medialink} {$dirmark}<span class="fileInfo">$longDesc</span>
 560 EOT
 561                                 );
 562                         }
 563
 564                         $renderLangOptions = $this->displayImg->getAvailableLanguages();
 565                         if ( count( $renderLangOptions ) >= 1 ) {
 566                                 $out->addHTML( $this->doRenderLangOpt( $renderLangOptions, $renderLang ) );
 567                         }
 568
 569                         // Add cannot animate thumbnail warning
 570                         if ( !$this->displayImg->canAnimateThumbIfAppropriate() ) {
 571                                 // Include the extension so wiki admins can
 572                                 // customize it on a per file-type basis
 573                                 // (aka say things like use format X instead).
 574                                 // additionally have a specific message for
 575                                 // file-no-thumb-animation-gif
 576                                 $ext = $this->displayImg->getExtension();
 577                                 $noAnimMesg = wfMessageFallback(
 578                                         'file-no-thumb-animation-' . $ext,
 579                                         'file-no-thumb-animation'
 580                                 )->plain();
 581
 582                                 $out->wrapWikiTextAsInterface( 'mw-noanimatethumb', $noAnimMesg );
 583                         }
 584
 585                         if ( !$this->displayImg->isLocal() ) {
 586                                 $this->printSharedImageText();
 587                         }
 588                 } else {
 589                         # Image does not exist
 590                         if ( !$this->getId() ) {
 591                                 $dbr = wfGetDB( DB_REPLICA );
 592
 593                                 # No article exists either
 594                                 # Show deletion log to be consistent with normal articles
 595                                 LogEventsList::showLogExtract(
 596                                         $out,
 597                                         [ 'delete', 'move', 'protect' ],
 598                                         $this->getTitle()->getPrefixedText(),
 599                                         '',
 600                                         [ 'lim' => 10,
 601                                                 'conds' => [ 'log_action != ' . $dbr->addQuotes( 'revision' ) ],
 602                                                 'showIfEmpty' => false,
 603                                                 'msgKey' => [ 'moveddeleted-notice' ]
 604                                         ]
 605                                 );
 606                         }
 607
 608                         if ( $wgEnableUploads && $user->isAllowed( 'upload' ) ) {
 609                                 // Only show an upload link if the user can upload
 610                                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 611                                 $nofile = [
 612                                         'filepage-nofile-link',
 613                                         $uploadTitle->getFullURL( [ 'wpDestFile' => $this->mPage->getFile()->getName() ] )
 614                                 ];
 615                         } else {
 616                                 $nofile = 'filepage-nofile';
 617                         }
 618                         // Note, if there is an image description page, but
 619                         // no image, then this setRobotPolicy is overridden
 620                         // by Article::View().
 621                         $out->setRobotPolicy( 'noindex,nofollow' );
 622                         $out->wrapWikiMsg( "<div id='mw-imagepage-nofile' class='plainlinks'>\n$1\n</div>", $nofile );
 623                         if ( !$this->getId() && $wgSend404Code ) {
 624                                 // If there is no image, no shared image, and no description page,
 625                                 // output a 404, to be consistent with Article::showMissingArticle.
 626                                 $request->response()->statusHeader( 404 );
 627                         }
 628                 }
 629                 $out->setFileVersion( $this->displayImg );
 630         }
 631
 632         /**
 633          * Make the text under the image to say what size preview
 634          *
 635          * @param array $params parameters for thumbnail
 636          * @param string $sizeLinkBigImagePreview HTML for the current size
 637          * @return string HTML output
 638          */
 639         protected function getThumbPrevText( $params, $sizeLinkBigImagePreview ) {
 640                 if ( $sizeLinkBigImagePreview ) {
 641                         // Show a different message of preview is different format from original.
 642                         $previewTypeDiffers = false;
 643                         $origExt = $thumbExt = $this->displayImg->getExtension();
 644                         if ( $this->displayImg->getHandler() ) {
 645                                 $origMime = $this->displayImg->getMimeType();
 646                                 $typeParams = $params;
 647                                 $this->displayImg->getHandler()->normaliseParams( $this->displayImg, $typeParams );
 648                                 list( $thumbExt, $thumbMime ) = $this->displayImg->getHandler()->getThumbType(
 649                                         $origExt, $origMime, $typeParams );
 650                                 if ( $thumbMime !== $origMime ) {
 651                                         $previewTypeDiffers = true;
 652                                 }
 653                         }
 654                         if ( $previewTypeDiffers ) {
 655                                 return $this->getContext()->msg( 'show-big-image-preview-differ' )->
 656                                         rawParams( $sizeLinkBigImagePreview )->
 657                                         params( strtoupper( $origExt ) )->
 658                                         params( strtoupper( $thumbExt ) )->
 659                                         parse();
 660                         } else {
 661                                 return $this->getContext()->msg( 'show-big-image-preview' )->
 662                                         rawParams( $sizeLinkBigImagePreview )->
 663                                 parse();
 664                         }
 665                 } else {
 666                         return '';
 667                 }
 668         }
 669
 670         /**
 671          * Creates an thumbnail of specified size and returns an HTML link to it
 672          * @param array $params Scaler parameters
 673          * @param int $width
 674          * @param int $height
 675          * @return string
 676          */
 677         protected function makeSizeLink( $params, $width, $height ) {
 678                 $params['width'] = $width;
 679                 $params['height'] = $height;
 680                 $thumbnail = $this->displayImg->transform( $params );
 681                 if ( $thumbnail && !$thumbnail->isError() ) {
 682                         return Html::rawElement( 'a', [
 683                                 'href' => $thumbnail->getUrl(),
 684                                 'class' => 'mw-thumbnail-link'
 685                                 ], $this->getContext()->msg( 'show-big-image-size' )->numParams(
 686                                         $thumbnail->getWidth(), $thumbnail->getHeight()
 687                                 )->parse() );
 688                 } else {
 689                         return '';
 690                 }
 691         }
 692
 693         /**
 694          * Show a notice that the file is from a shared repository
 695          */
 696         protected function printSharedImageText() {
 697                 $out = $this->getContext()->getOutput();
 698                 $this->loadFile();
 699
 700                 $descUrl = $this->mPage->getFile()->getDescriptionUrl();
 701                 $descText = $this->mPage->getFile()->getDescriptionText( $this->getContext()->getLanguage() );
 702
 703                 /* Add canonical to head if there is no local page for this shared file */
 704                 if ( $descUrl && $this->mPage->getId() == 0 ) {
 705                         $out->setCanonicalUrl( $descUrl );
 706                 }
 707
 708                 $wrap = "<div class=\"sharedUploadNotice\">\n$1\n</div>\n";
 709                 $repo = $this->mPage->getFile()->getRepo()->getDisplayName();
 710
 711                 if ( $descUrl &&
 712                         $descText &&
 713                         $this->getContext()->msg( 'sharedupload-desc-here' )->plain() !== '-'
 714                 ) {
 715                         $out->wrapWikiMsg( $wrap, [ 'sharedupload-desc-here', $repo, $descUrl ] );
 716                 } elseif ( $descUrl &&
 717                         $this->getContext()->msg( 'sharedupload-desc-there' )->plain() !== '-'
 718                 ) {
 719                         $out->wrapWikiMsg( $wrap, [ 'sharedupload-desc-there', $repo, $descUrl ] );
 720                 } else {
 721                         $out->wrapWikiMsg( $wrap, [ 'sharedupload', $repo ], ''/*BACKCOMPAT*/ );
 722                 }
 723
 724                 if ( $descText ) {
 725                         $this->mExtraDescription = $descText;
 726                 }
 727         }
 728
 729         public function getUploadUrl() {
 730                 $this->loadFile();
 731                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 732                 return $uploadTitle->getFullURL( [
 733                         'wpDestFile' => $this->mPage->getFile()->getName(),
 734                         'wpForReUpload' => 1
 735                 ] );
 736         }
 737
 738         /**
 739          * Print out the various links at the bottom of the image page, e.g. reupload,
 740          * external editing (and instructions link) etc.
 741          */
 742         protected function uploadLinksBox() {
 743                 global $wgEnableUploads;
 744
 745                 if ( !$wgEnableUploads ) {
 746                         return;
 747                 }
 748
 749                 $this->loadFile();
 750                 if ( !$this->mPage->getFile()->isLocal() ) {
 751                         return;
 752                 }
 753
 754                 $out = $this->getContext()->getOutput();
 755                 $out->addHTML( "<ul>\n" );
 756
 757                 # "Upload a new version of this file" link
 758                 $canUpload = $this->getTitle()->quickUserCan( 'upload', $this->getContext()->getUser() );
 759                 if ( $canUpload && UploadBase::userCanReUpload(
 760                                 $this->getContext()->getUser(),
 761                                 $this->mPage->getFile() )
 762                 ) {
 763                         $ulink = Linker::makeExternalLink(
 764                                 $this->getUploadUrl(),
 765                                 $this->getContext()->msg( 'uploadnewversion-linktext' )->text()
 766                         );
 767                         $out->addHTML( "<li id=\"mw-imagepage-reupload-link\">"
 768                                 . "<div class=\"plainlinks\">{$ulink}</div></li>\n" );
 769                 } else {
 770                         $out->addHTML( "<li id=\"mw-imagepage-upload-disallowed\">"
 771                                 . $this->getContext()->msg( 'upload-disallowed-here' )->escaped() . "</li>\n" );
 772                 }
 773
 774                 $out->addHTML( "</ul>\n" );
 775         }
 776
 777         /**
 778          * For overloading
 779          */
 780         protected function closeShowImage() {
 781         }
 782
 783         /**
 784          * If the page we've just displayed is in the "Image" namespace,
 785          * we follow it with an upload history of the image and its usage.
 786          */
 787         protected function imageHistory() {
 788                 $this->loadFile();
 789                 $out = $this->getContext()->getOutput();
 790                 $pager = new ImageHistoryPseudoPager( $this );
 791                 $out->addHTML( $pager->getBody() );
 792                 $out->preventClickjacking( $pager->getPreventClickjacking() );
 793
 794                 $this->mPage->getFile()->resetHistory(); // free db resources
 795
 796                 # Exist check because we don't want to show this on pages where an image
 797                 # doesn't exist along with the noimage message, that would suck. -ævar
 798                 if ( $this->mPage->getFile()->exists() ) {
 799                         $this->uploadLinksBox();
 800                 }
 801         }
 802
 803         /**
 804          * @param string|string[] $target
 805          * @param int $limit
 806          * @return ResultWrapper
 807          */
 808         protected function queryImageLinks( $target, $limit ) {
 809                 $dbr = wfGetDB( DB_REPLICA );
 810
 811                 return $dbr->select(
 812                         [ 'imagelinks', 'page' ],
 813                         [ 'page_namespace', 'page_title', 'il_to' ],
 814                         [ 'il_to' => $target, 'il_from = page_id' ],
 815                         __METHOD__,
 816                         [ 'LIMIT' => $limit + 1, 'ORDER BY' => 'il_from', ]
 817                 );
 818         }
 819
 820         protected function imageLinks() {
 821                 $limit = 100;
 822
 823                 $out = $this->getContext()->getOutput();
 824
 825                 $rows = [];
 826                 $redirects = [];
 827                 foreach ( $this->getTitle()->getRedirectsHere( NS_FILE ) as $redir ) {
 828                         $redirects[$redir->getDBkey()] = [];
 829                         $rows[] = (object)[
 830                                 'page_namespace' => NS_FILE,
 831                                 'page_title' => $redir->getDBkey(),
 832                         ];
 833                 }
 834
 835                 $res = $this->queryImageLinks( $this->getTitle()->getDBkey(), $limit + 1 );
 836                 foreach ( $res as $row ) {
 837                         $rows[] = $row;
 838                 }
 839                 $count = count( $rows );
 840
 841                 $hasMore = $count > $limit;
 842                 if ( !$hasMore && count( $redirects ) ) {
 843                         $res = $this->queryImageLinks( array_keys( $redirects ),
 844                                 $limit - count( $rows ) + 1 );
 845                         foreach ( $res as $row ) {
 846                                 $redirects[$row->il_to][] = $row;
 847                                 $count++;
 848                         }
 849                         $hasMore = ( $res->numRows() + count( $rows ) ) > $limit;
 850                 }
 851
 852                 if ( $count == 0 ) {
 853                         $out->wrapWikiMsg(
 854                                 Html::rawElement( 'div',
 855                                         [ 'id' => 'mw-imagepage-nolinkstoimage' ], "\n$1\n" ),
 856                                 'nolinkstoimage'
 857                         );
 858                         return;
 859                 }
 860
 861                 $out->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
 862                 if ( !$hasMore ) {
 863                         $out->addWikiMsg( 'linkstoimage', $count );
 864                 } else {
 865                         // More links than the limit. Add a link to [[Special:Whatlinkshere]]
 866                         $out->addWikiMsg( 'linkstoimage-more',
 867                                 $this->getContext()->getLanguage()->formatNum( $limit ),
 868                                 $this->getTitle()->getPrefixedDBkey()
 869                         );
 870                 }
 871
 872                 $out->addHTML(
 873                         Html::openElement( 'ul',
 874                                 [ 'class' => 'mw-imagepage-linkstoimage' ] ) . "\n"
 875                 );
 876                 $count = 0;
 877
 878                 // Sort the list by namespace:title
 879                 usort( $rows, [ $this, 'compare' ] );
 880
 881                 // Create links for every element
 882                 $currentCount = 0;
 883                 foreach ( $rows as $element ) {
 884                         $currentCount++;
 885                         if ( $currentCount > $limit ) {
 886                                 break;
 887                         }
 888
 889                         $query = [];
 890                         # Add a redirect=no to make redirect pages reachable
 891                         if ( isset( $redirects[$element->page_title] ) ) {
 892                                 $query['redirect'] = 'no';
 893                         }
 894                         $link = Linker::linkKnown(
 895                                 Title::makeTitle( $element->page_namespace, $element->page_title ),
 896                                 null, [], $query
 897                         );
 898                         if ( !isset( $redirects[$element->page_title] ) ) {
 899                                 # No redirects
 900                                 $liContents = $link;
 901                         } elseif ( count( $redirects[$element->page_title] ) === 0 ) {
 902                                 # Redirect without usages
 903                                 $liContents = $this->getContext()->msg( 'linkstoimage-redirect' )
 904                                         ->rawParams( $link, '' )
 905                                         ->parse();
 906                         } else {
 907                                 # Redirect with usages
 908                                 $li = '';
 909                                 foreach ( $redirects[$element->page_title] as $row ) {
 910                                         $currentCount++;
 911                                         if ( $currentCount > $limit ) {
 912                                                 break;
 913                                         }
 914
 915                                         $link2 = Linker::linkKnown( Title::makeTitle( $row->page_namespace, $row->page_title ) );
 916                                         $li .= Html::rawElement(
 917                                                 'li',
 918                                                 [ 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ],
 919                                                 $link2
 920                                                 ) . "\n";
 921                                 }
 922
 923                                 $ul = Html::rawElement(
 924                                         'ul',
 925                                         [ 'class' => 'mw-imagepage-redirectstofile' ],
 926                                         $li
 927                                         ) . "\n";
 928                                 $liContents = $this->getContext()->msg( 'linkstoimage-redirect' )->rawParams(
 929                                         $link, $ul )->parse();
 930                         }
 931                         $out->addHTML( Html::rawElement(
 932                                         'li',
 933                                         [ 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ],
 934                                         $liContents
 935                                 ) . "\n"
 936                         );
 937
 938                 }
 939                 $out->addHTML( Html::closeElement( 'ul' ) . "\n" );
 940                 $res->free();
 941
 942                 // Add a links to [[Special:Whatlinkshere]]
 943                 if ( $count > $limit ) {
 944                         $out->addWikiMsg( 'morelinkstoimage', $this->getTitle()->getPrefixedDBkey() );
 945                 }
 946                 $out->addHTML( Html::closeElement( 'div' ) . "\n" );
 947         }
 948
 949         protected function imageDupes() {
 950                 $this->loadFile();
 951                 $out = $this->getContext()->getOutput();
 952
 953                 $dupes = $this->mPage->getDuplicates();
 954                 if ( count( $dupes ) == 0 ) {
 955                         return;
 956                 }
 957
 958                 $out->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
 959                 $out->addWikiMsg( 'duplicatesoffile',
 960                         $this->getContext()->getLanguage()->formatNum( count( $dupes ) ), $this->getTitle()->getDBkey()
 961                 );
 962                 $out->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
 963
 964                 /**
 965                  * @var File $file
 966                  */
 967                 foreach ( $dupes as $file ) {
 968                         $fromSrc = '';
 969                         if ( $file->isLocal() ) {
 970                                 $link = Linker::linkKnown( $file->getTitle() );
 971                         } else {
 972                                 $link = Linker::makeExternalLink( $file->getDescriptionUrl(),
 973                                         $file->getTitle()->getPrefixedText() );
 974                                 $fromSrc = $this->getContext()->msg(
 975                                         'shared-repo-from',
 976                                         $file->getRepo()->getDisplayName()
 977                                 )->escaped();
 978                         }
 979                         $out->addHTML( "<li>{$link} {$fromSrc}</li>\n" );
 980                 }
 981                 $out->addHTML( "</ul></div>\n" );
 982         }
 983
 984         /**
 985          * Delete the file, or an earlier version of it
 986          */
 987         public function delete() {
 988                 $file = $this->mPage->getFile();
 989                 if ( !$file->exists() || !$file->isLocal() || $file->getRedirected() ) {
 990                         // Standard article deletion
 991                         parent::delete();
 992                         return;
 993                 }
 994
 995                 $deleter = new FileDeleteForm( $file );
 996                 $deleter->execute();
 997         }
 998
 999         /**
1000          * Display an error with a wikitext description
1001          *
1002          * @param string $description
1003          */
1004         function showError( $description ) {
1005                 $out = $this->getContext()->getOutput();
1006                 $out->setPageTitle( $this->getContext()->msg( 'internalerror' ) );
1007                 $out->setRobotPolicy( 'noindex,nofollow' );
1008                 $out->setArticleRelated( false );
1009                 $out->enableClientCache( false );
1010                 $out->addWikiTextAsInterface( $description );
1011         }
1012
1013         /**
1014          * Callback for usort() to do link sorts by (namespace, title)
1015          * Function copied from Title::compare()
1016          *
1017          * @param object $a Object page to compare with
1018          * @param object $b Object page to compare with
1019          * @return int Result of string comparison, or namespace comparison
1020          */
1021         protected function compare( $a, $b ) {
1022                 return $a->page_namespace <=> $b->page_namespace
1023                         ?: strcmp( $a->page_title, $b->page_title );
1024         }
1025
1026         /**
1027          * Returns the corresponding $wgImageLimits entry for the selected user option
1028          *
1029          * @param User $user
1030          * @param string $optionName Name of a option to check, typically imagesize or thumbsize
1031          * @return int[]
1032          * @since 1.21
1033          */
1034         public function getImageLimitsFromOption( $user, $optionName ) {
1035                 global $wgImageLimits;
1036
1037                 $option = $user->getIntOption( $optionName );
1038                 if ( !isset( $wgImageLimits[$option] ) ) {
1039                         $option = User::getDefaultOption( $optionName );
1040                 }
1041
1042                 // The user offset might still be incorrect, specially if
1043                 // $wgImageLimits got changed (see T10858).
1044                 if ( !isset( $wgImageLimits[$option] ) ) {
1045                         // Default to the first offset in $wgImageLimits
1046                         $option = 0;
1047                 }
1048
1049                 // if nothing is set, fallback to a hardcoded default
1050                 return $wgImageLimits[$option] ?? [ 800, 600 ];
1051         }
1052
1053         /**
1054          * Output a drop-down box for language options for the file
1055          *
1056          * @param array $langChoices Array of string language codes
1057          * @param string $renderLang Language code for the language we want the file to rendered in.
1058          * @return string HTML to insert underneath image.
1059          */
1060         protected function doRenderLangOpt( array $langChoices, $renderLang ) {
1061                 global $wgScript;
1062                 $opts = '';
1063
1064                 $matchedRenderLang = $this->displayImg->getMatchedLanguage( $renderLang );
1065
1066                 foreach ( $langChoices as $lang ) {
1067                         $opts .= $this->createXmlOptionStringForLanguage(
1068                                 $lang,
1069                                 $matchedRenderLang === $lang
1070                         );
1071                 }
1072
1073                 // Allow for the default case in an svg <switch> that is displayed if no
1074                 // systemLanguage attribute matches
1075                 $opts .= "\n" .
1076                         Xml::option(
1077                                 $this->getContext()->msg( 'img-lang-default' )->text(),
1078                                 'und',
1079                                 is_null( $matchedRenderLang )
1080                         );
1081
1082                 $select = Html::rawElement(
1083                         'select',
1084                         [ 'id' => 'mw-imglangselector', 'name' => 'lang' ],
1085                         $opts
1086                 );
1087                 $submit = Xml::submitButton( $this->getContext()->msg( 'img-lang-go' )->text() );
1088
1089                 $formContents = $this->getContext()->msg( 'img-lang-info' )
1090                         ->rawParams( $select, $submit )
1091                         ->parse();
1092                 $formContents .= Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() );
1093
1094                 $langSelectLine = Html::rawElement( 'div', [ 'id' => 'mw-imglangselector-line' ],
1095                         Html::rawElement( 'form', [ 'action' => $wgScript ], $formContents )
1096                 );
1097                 return $langSelectLine;
1098         }
1099
1100         /**
1101          * @param string $lang
1102          * @param bool $selected
1103          * @return string
1104          */
1105         private function createXmlOptionStringForLanguage( $lang, $selected ) {
1106                 $code = LanguageCode::bcp47( $lang );
1107                 $name = Language::fetchLanguageName( $code, $this->getContext()->getLanguage()->getCode() );
1108                 if ( $name !== '' ) {
1109                         $display = $this->getContext()->msg( 'img-lang-opt', $code, $name )->text();
1110                 } else {
1111                         $display = $code;
1112                 }
1113                 return "\n" .
1114                         Xml::option(
1115                                 $display,
1116                                 $lang,
1117                                 $selected
1118                         );
1119         }
1120
1121         /**
1122          * Get the width and height to display image at.
1123          *
1124          * @note This method assumes that it is only called if one
1125          *  of the dimensions are bigger than the max, or if the
1126          *  image is vectorized.
1127          *
1128          * @param int $maxWidth Max width to display at
1129          * @param int $maxHeight Max height to display at
1130          * @param int $width Actual width of the image
1131          * @param int $height Actual height of the image
1132          * @throws MWException
1133          * @return array Array (width, height)
1134          */
1135         protected function getDisplayWidthHeight( $maxWidth, $maxHeight, $width, $height ) {
1136                 if ( !$maxWidth || !$maxHeight ) {
1137                         // should never happen
1138                         throw new MWException( 'Using a choice from $wgImageLimits that is 0x0' );
1139                 }
1140
1141                 if ( !$width || !$height ) {
1142                         return [ 0, 0 ];
1143                 }
1144
1145                 # Calculate the thumbnail size.
1146                 if ( $width <= $maxWidth && $height <= $maxHeight ) {
1147                         // Vectorized image, do nothing.
1148                 } elseif ( $width / $height >= $maxWidth / $maxHeight ) {
1149                         # The limiting factor is the width, not the height.
1150                         $height = round( $height * $maxWidth / $width );
1151                         $width = $maxWidth;
1152                         # Note that $height <= $maxHeight now.
1153                 } else {
1154                         $newwidth = floor( $width * $maxHeight / $height );
1155                         $height = round( $height * $newwidth / $width );
1156                         $width = $newwidth;
1157                         # Note that $height <= $maxHeight now, but might not be identical
1158                         # because of rounding.
1159                 }
1160                 return [ $width, $height ];
1161         }
1162
1163         /**
1164          * Get alternative thumbnail sizes.
1165          *
1166          * @note This will only list several alternatives if thumbnails are rendered on 404
1167          * @param int $origWidth Actual width of image
1168          * @param int $origHeight Actual height of image
1169          * @return array An array of [width, height] pairs.
1170          */
1171         protected function getThumbSizes( $origWidth, $origHeight ) {
1172                 global $wgImageLimits;
1173                 if ( $this->displayImg->getRepo()->canTransformVia404() ) {
1174                         $thumbSizes = $wgImageLimits;
1175                         // Also include the full sized resolution in the list, so
1176                         // that users know they can get it. This will link to the
1177                         // original file asset if mustRender() === false. In the case
1178                         // that we mustRender, some users have indicated that they would
1179                         // find it useful to have the full size image in the rendered
1180                         // image format.
1181                         $thumbSizes[] = [ $origWidth, $origHeight ];
1182                 } else {
1183                         # Creating thumb links triggers thumbnail generation.
1184                         # Just generate the thumb for the current users prefs.
1185                         $thumbSizes = [
1186                                 $this->getImageLimitsFromOption( $this->getContext()->getUser(), 'thumbsize' )
1187                         ];
1188                         if ( !$this->displayImg->mustRender() ) {
1189                                 // We can safely include a link to the "full-size" preview,
1190                                 // without actually rendering.
1191                                 $thumbSizes[] = [ $origWidth, $origHeight ];
1192                         }
1193                 }
1194                 return $thumbSizes;
1195         }
1196
1197         /**
1198          * @see WikiFilePage::getFile
1199          * @return bool|File
1200          */
1201         public function getFile() {
1202                 return $this->mPage->getFile();
1203         }
1204
1205         /**
1206          * @see WikiFilePage::isLocal
1207          * @return bool
1208          */
1209         public function isLocal() {
1210                 return $this->mPage->isLocal();
1211         }
1212
1213         /**
1214          * @see WikiFilePage::getDuplicates
1215          * @return array|null
1216          */
1217         public function getDuplicates() {
1218                 return $this->mPage->getDuplicates();
1219         }
1220
1221         /**
1222          * @see WikiFilePage::getForeignCategories
1223          * @return TitleArray|Title[]
1224          */
1225         public function getForeignCategories() {
1226                 return $this->mPage->getForeignCategories();
1227         }
1228
1229 }