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