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