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         /**
  90          * Handler for action=render
  91          * Include body text only; none of the image extras
  92          */
  93         public function render() {
  94                 $this->getContext()->getOutput()->setArticleBodyOnly( true );
  95                 parent::view();
  96         }
  97
  98         public function view() {
  99                 global $wgShowEXIF;
 100
 101                 $out = $this->getContext()->getOutput();
 102                 $request = $this->getContext()->getRequest();
 103                 $diff = $request->getVal( 'diff' );
 104                 $diffOnly = $request->getBool(
 105                         'diffonly',
 106                         $this->getContext()->getUser()->getOption( 'diffonly' )
 107                 );
 108
 109                 if ( $this->getTitle()->getNamespace() != NS_FILE || ( $diff !== null && $diffOnly ) ) {
 110                         parent::view();
 111                         return;
 112                 }
 113
 114                 $this->loadFile();
 115
 116                 if ( $this->getTitle()->getNamespace() == NS_FILE && $this->mPage->getFile()->getRedirected() ) {
 117                         if ( $this->getTitle()->getDBkey() == $this->mPage->getFile()->getName() || $diff !== null ) {
 118                                 $request->setVal( 'diffonly', 'true' );
 119                         }
 120
 121                         parent::view();
 122                         return;
 123                 }
 124
 125                 if ( $wgShowEXIF && $this->displayImg->exists() ) {
 126                         // @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
 127                         $formattedMetadata = $this->displayImg->formatMetadata( $this->getContext() );
 128                         $showmeta = $formattedMetadata !== false;
 129                 } else {
 130                         $showmeta = false;
 131                 }
 132
 133                 if ( !$diff && $this->displayImg->exists() ) {
 134                         $out->addHTML( $this->showTOC( $showmeta ) );
 135                 }
 136
 137                 if ( !$diff ) {
 138                         $this->openShowImage();
 139                 }
 140
 141                 # No need to display noarticletext, we use our own message, output in openShowImage()
 142                 if ( $this->mPage->getId() ) {
 143                         # NS_FILE is in the user language, but this section (the actual wikitext)
 144                         # should be in page content language
 145                         $pageLang = $this->getTitle()->getPageViewLanguage();
 146                         $out->addHTML( Xml::openElement( 'div', [ 'id' => 'mw-imagepage-content',
 147                                 'lang' => $pageLang->getHtmlCode(), 'dir' => $pageLang->getDir(),
 148                                 'class' => 'mw-content-' . $pageLang->getDir() ] ) );
 149
 150                         parent::view();
 151
 152                         $out->addHTML( Xml::closeElement( 'div' ) );
 153                 } else {
 154                         # Just need to set the right headers
 155                         $out->setArticleFlag( true );
 156                         $out->setPageTitle( $this->getTitle()->getPrefixedText() );
 157                         $this->mPage->doViewUpdates( $this->getContext()->getUser(), $this->getOldID() );
 158                 }
 159
 160                 # Show shared description, if needed
 161                 if ( $this->mExtraDescription ) {
 162                         $fol = $this->getContext()->msg( 'shareddescriptionfollows' );
 163                         if ( !$fol->isDisabled() ) {
 164                                 $out->addWikiText( $fol->plain() );
 165                         }
 166                         $out->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . "</div>\n" );
 167                 }
 168
 169                 $this->closeShowImage();
 170                 $this->imageHistory();
 171                 // TODO: Cleanup the following
 172
 173                 $out->addHTML( Xml::element( 'h2',
 174                         [ 'id' => 'filelinks' ],
 175                                 $this->getContext()->msg( 'imagelinks' )->text() ) . "\n" );
 176                 $this->imageDupes();
 177                 # @todo FIXME: For some freaky reason, we can't redirect to foreign images.
 178                 # Yet we return metadata about the target. Definitely an issue in the FileRepo
 179                 $this->imageLinks();
 180
 181                 # Allow extensions to add something after the image links
 182                 $html = '';
 183                 Hooks::run( 'ImagePageAfterImageLinks', [ $this, &$html ] );
 184                 if ( $html ) {
 185                         $out->addHTML( $html );
 186                 }
 187
 188                 if ( $showmeta ) {
 189                         $out->addHTML( Xml::element(
 190                                 'h2',
 191                                 [ 'id' => 'metadata' ],
 192                                         $this->getContext()->msg( 'metadata' )->text() ) . "\n" );
 193                         $out->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
 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 = "<div class=\"mw-imagepage-section-metadata\">";
 253                 $r .= $this->getContext()->msg( 'metadata-help' )->plain();
 254                 $r .= "<table id=\"mw_metadata\" class=\"mw_metadata\">\n";
 255                 foreach ( $metadata as $type => $stuff ) {
 256                         foreach ( $stuff as $v ) {
 257                                 $class = str_replace( ' ', '_', $v['id'] );
 258                                 if ( $type == 'collapsed' ) {
 259                                         // Handled by mediawiki.action.view.metadata module.
 260                                         $class .= ' collapsable';
 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</div>\n";
 270                 return $r;
 271         }
 272
 273         /**
 274          * Overloading Article's getContentObject method.
 275          *
 276          * Omit noarticletext if sharedupload; text will be fetched from the
 277          * shared upload server if possible.
 278          * @return string
 279          */
 280         public function getContentObject() {
 281                 $this->loadFile();
 282                 if ( $this->mPage->getFile() && !$this->mPage->getFile()->isLocal() && 0 == $this->getId() ) {
 283                         return null;
 284                 }
 285                 return parent::getContentObject();
 286         }
 287
 288         private function getLanguageForRendering( WebRequest $request, File $file ) {
 289                 $handler = $this->displayImg->getHandler();
 290
 291                 $requestLanguage = $request->getVal( 'lang' );
 292                 if ( !is_null( $requestLanguage ) ) {
 293                         if ( $handler && $handler->validateParam( 'lang', $requestLanguage ) ) {
 294                                 return $requestLanguage;
 295                         }
 296                 }
 297
 298                 return $handler->getDefaultRenderLanguage( $this->displayImg );
 299         }
 300
 301         protected function openShowImage() {
 302                 global $wgEnableUploads, $wgSend404Code, $wgSVGMaxSize;
 303
 304                 $this->loadFile();
 305                 $out = $this->getContext()->getOutput();
 306                 $user = $this->getContext()->getUser();
 307                 $lang = $this->getContext()->getLanguage();
 308                 $dirmark = $lang->getDirMarkEntity();
 309                 $request = $this->getContext()->getRequest();
 310
 311                 $max = $this->getImageLimitsFromOption( $user, 'imagesize' );
 312                 $maxWidth = $max[0];
 313                 $maxHeight = $max[1];
 314
 315                 if ( $this->displayImg->exists() ) {
 316                         # image
 317                         $page = $request->getIntOrNull( 'page' );
 318                         if ( is_null( $page ) ) {
 319                                 $params = [];
 320                                 $page = 1;
 321                         } else {
 322                                 $params = [ 'page' => $page ];
 323                         }
 324
 325                         $renderLang = $this->getLanguageForRendering( $request, $this->displayImg );
 326                         if ( !is_null( $renderLang ) ) {
 327                                 $params['lang'] = $renderLang;
 328                         }
 329
 330                         $width_orig = $this->displayImg->getWidth( $page );
 331                         $width = $width_orig;
 332                         $height_orig = $this->displayImg->getHeight( $page );
 333                         $height = $height_orig;
 334
 335                         $filename = wfEscapeWikiText( $this->displayImg->getName() );
 336                         $linktext = $filename;
 337
 338                         // Avoid PHP 7.1 warning from passing $this by reference
 339                         $imagePage = $this;
 340
 341                         Hooks::run( 'ImageOpenShowImageInlineBefore', [ &$imagePage, &$out ] );
 342
 343                         if ( $this->displayImg->allowInlineDisplay() ) {
 344                                 # image
 345                                 # "Download high res version" link below the image
 346                                 # $msgsize = $this->getContext()->msg( 'file-info-size', $width_orig, $height_orig,
 347                                 #   Linker::formatSize( $this->displayImg->getSize() ), $mime )->escaped();
 348                                 # We'll show a thumbnail of this image
 349                                 if ( $width > $maxWidth || $height > $maxHeight || $this->displayImg->isVectorized() ) {
 350                                         list( $width, $height ) = $this->getDisplayWidthHeight(
 351                                                 $maxWidth, $maxHeight, $width, $height
 352                                         );
 353                                         $linktext = $this->getContext()->msg( 'show-big-image' )->escaped();
 354
 355                                         $thumbSizes = $this->getThumbSizes( $width_orig, $height_orig );
 356                                         # Generate thumbnails or thumbnail links as needed...
 357                                         $otherSizes = [];
 358                                         foreach ( $thumbSizes as $size ) {
 359                                                 // We include a thumbnail size in the list, if it is
 360                                                 // less than or equal to the original size of the image
 361                                                 // asset ($width_orig/$height_orig). We also exclude
 362                                                 // the current thumbnail's size ($width/$height)
 363                                                 // since that is added to the message separately, so
 364                                                 // it can be denoted as the current size being shown.
 365                                                 // Vectorized images are limited by $wgSVGMaxSize big,
 366                                                 // so all thumbs less than or equal that are shown.
 367                                                 if ( ( ( $size[0] <= $width_orig && $size[1] <= $height_orig )
 368                                                                 || ( $this->displayImg->isVectorized()
 369                                                                         && max( $size[0], $size[1] ) <= $wgSVGMaxSize )
 370                                                         )
 371                                                         && $size[0] != $width && $size[1] != $height
 372                                                 ) {
 373                                                         $sizeLink = $this->makeSizeLink( $params, $size[0], $size[1] );
 374                                                         if ( $sizeLink ) {
 375                                                                 $otherSizes[] = $sizeLink;
 376                                                         }
 377                                                 }
 378                                         }
 379                                         $otherSizes = array_unique( $otherSizes );
 380
 381                                         $sizeLinkBigImagePreview = $this->makeSizeLink( $params, $width, $height );
 382                                         $msgsmall = $this->getThumbPrevText( $params, $sizeLinkBigImagePreview );
 383                                         if ( count( $otherSizes ) ) {
 384                                                 $msgsmall .= ' ' .
 385                                                 Html::rawElement(
 386                                                         'span',
 387                                                         [ 'class' => 'mw-filepage-other-resolutions' ],
 388                                                         $this->getContext()->msg( 'show-big-image-other' )
 389                                                                 ->rawParams( $lang->pipeList( $otherSizes ) )
 390                                                                 ->params( count( $otherSizes ) )
 391                                                                 ->parse()
 392                                                 );
 393                                         }
 394                                 } elseif ( $width == 0 && $height == 0 ) {
 395                                         # Some sort of audio file that doesn't have dimensions
 396                                         # Don't output a no hi res message for such a file
 397                                         $msgsmall = '';
 398                                 } else {
 399                                         # Image is small enough to show full size on image page
 400                                         $msgsmall = $this->getContext()->msg( 'file-nohires' )->parse();
 401                                 }
 402
 403                                 $params['width'] = $width;
 404                                 $params['height'] = $height;
 405                                 $thumbnail = $this->displayImg->transform( $params );
 406                                 Linker::processResponsiveImages( $this->displayImg, $thumbnail, $params );
 407
 408                                 $anchorclose = Html::rawElement(
 409                                         'div',
 410                                         [ 'class' => 'mw-filepage-resolutioninfo' ],
 411                                         $msgsmall
 412                                 );
 413
 414                                 $isMulti = $this->displayImg->isMultipage() && $this->displayImg->pageCount() > 1;
 415                                 if ( $isMulti ) {
 416                                         $out->addModules( 'mediawiki.page.image.pagination' );
 417                                         $out->addHTML( '<table class="multipageimage"><tr><td>' );
 418                                 }
 419
 420                                 if ( $thumbnail ) {
 421                                         $options = [
 422                                                 'alt' => $this->displayImg->getTitle()->getPrefixedText(),
 423                                                 'file-link' => true,
 424                                         ];
 425                                         $out->addHTML( '<div class="fullImageLink" id="file">' .
 426                                                 $thumbnail->toHtml( $options ) .
 427                                                 $anchorclose . "</div>\n" );
 428                                 }
 429
 430                                 if ( $isMulti ) {
 431                                         $count = $this->displayImg->pageCount();
 432
 433                                         if ( $page > 1 ) {
 434                                                 $label = $this->getContext()->msg( 'imgmultipageprev' )->text();
 435                                                 // on the client side, this link is generated in ajaxifyPageNavigation()
 436                                                 // in the mediawiki.page.image.pagination module
 437                                                 $link = Linker::linkKnown(
 438                                                         $this->getTitle(),
 439                                                         $label,
 440                                                         [],
 441                                                         [ 'page' => $page - 1 ]
 442                                                 );
 443                                                 $thumb1 = Linker::makeThumbLinkObj(
 444                                                         $this->getTitle(),
 445                                                         $this->displayImg,
 446                                                         $link,
 447                                                         $label,
 448                                                         'none',
 449                                                         [ 'page' => $page - 1 ]
 450                                                 );
 451                                         } else {
 452                                                 $thumb1 = '';
 453                                         }
 454
 455                                         if ( $page < $count ) {
 456                                                 $label = $this->getContext()->msg( 'imgmultipagenext' )->text();
 457                                                 $link = Linker::linkKnown(
 458                                                         $this->getTitle(),
 459                                                         $label,
 460                                                         [],
 461                                                         [ 'page' => $page + 1 ]
 462                                                 );
 463                                                 $thumb2 = Linker::makeThumbLinkObj(
 464                                                         $this->getTitle(),
 465                                                         $this->displayImg,
 466                                                         $link,
 467                                                         $label,
 468                                                         'none',
 469                                                         [ 'page' => $page + 1 ]
 470                                                 );
 471                                         } else {
 472                                                 $thumb2 = '';
 473                                         }
 474
 475                                         global $wgScript;
 476
 477                                         $formParams = [
 478                                                 'name' => 'pageselector',
 479                                                 'action' => $wgScript,
 480                                         ];
 481                                         $options = [];
 482                                         for ( $i = 1; $i <= $count; $i++ ) {
 483                                                 $options[] = Xml::option( $lang->formatNum( $i ), $i, $i == $page );
 484                                         }
 485                                         $select = Xml::tags( 'select',
 486                                                 [ 'id' => 'pageselector', 'name' => 'page' ],
 487                                                 implode( "\n", $options ) );
 488
 489                                         $out->addHTML(
 490                                                 '</td><td><div class="multipageimagenavbox">' .
 491                                                 Xml::openElement( 'form', $formParams ) .
 492                                                 Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
 493                                                 $this->getContext()->msg( 'imgmultigoto' )->rawParams( $select )->parse() .
 494                                                 $this->getContext()->msg( 'word-separator' )->escaped() .
 495                                                 Xml::submitButton( $this->getContext()->msg( 'imgmultigo' )->text() ) .
 496                                                 Xml::closeElement( 'form' ) .
 497                                                 "<hr />$thumb1\n$thumb2<br style=\"clear: both\" /></div></td></tr></table>"
 498                                         );
 499                                 }
 500                         } elseif ( $this->displayImg->isSafeFile() ) {
 501                                 # if direct link is allowed but it's not a renderable image, show an icon.
 502                                 $icon = $this->displayImg->iconThumb();
 503
 504                                 $out->addHTML( '<div class="fullImageLink" id="file">' .
 505                                         $icon->toHtml( [ 'file-link' => true ] ) .
 506                                         "</div>\n" );
 507                         }
 508
 509                         $longDesc = $this->getContext()->msg( 'parentheses', $this->displayImg->getLongDesc() )->text();
 510
 511                         $handler = $this->displayImg->getHandler();
 512
 513                         // If this is a filetype with potential issues, warn the user.
 514                         if ( $handler ) {
 515                                 $warningConfig = $handler->getWarningConfig( $this->displayImg );
 516
 517                                 if ( $warningConfig !== null ) {
 518                                         // The warning will be displayed via CSS and JavaScript.
 519                                         // We just need to tell the client side what message to use.
 520                                         $output = $this->getContext()->getOutput();
 521                                         $output->addJsConfigVars( 'wgFileWarning', $warningConfig );
 522                                         $output->addModules( $warningConfig['module'] );
 523                                         $output->addModules( 'mediawiki.filewarning' );
 524                                 }
 525                         }
 526
 527                         $medialink = "[[Media:$filename|$linktext]]";
 528
 529                         if ( !$this->displayImg->isSafeFile() ) {
 530                                 $warning = $this->getContext()->msg( 'mediawarning' )->plain();
 531                                 // dirmark is needed here to separate the file name, which
 532                                 // most likely ends in Latin characters, from the description,
 533                                 // which may begin with the file type. In RTL environment
 534                                 // this will get messy.
 535                                 // The dirmark, however, must not be immediately adjacent
 536                                 // to the filename, because it can get copied with it.
 537                                 // See T27277.
 538                                 // @codingStandardsIgnoreStart Ignore long line
 539                                 $out->addWikiText( <<<EOT
 540 <div class="fullMedia"><span class="dangerousLink">{$medialink}</span> $dirmark<span class="fileInfo">$longDesc</span></div>
 541 <div class="mediaWarning">$warning</div>
 542 EOT
 543                                 );
 544                                 // @codingStandardsIgnoreEnd
 545                         } else {
 546                                 $out->addWikiText( <<<EOT
 547 <div class="fullMedia">{$medialink} {$dirmark}<span class="fileInfo">$longDesc</span>
 548 </div>
 549 EOT
 550                                 );
 551                         }
 552
 553                         $renderLangOptions = $this->displayImg->getAvailableLanguages();
 554                         if ( count( $renderLangOptions ) >= 1 ) {
 555                                 $out->addHTML( $this->doRenderLangOpt( $renderLangOptions, $renderLang ) );
 556                         }
 557
 558                         // Add cannot animate thumbnail warning
 559                         if ( !$this->displayImg->canAnimateThumbIfAppropriate() ) {
 560                                 // Include the extension so wiki admins can
 561                                 // customize it on a per file-type basis
 562                                 // (aka say things like use format X instead).
 563                                 // additionally have a specific message for
 564                                 // file-no-thumb-animation-gif
 565                                 $ext = $this->displayImg->getExtension();
 566                                 $noAnimMesg = wfMessageFallback(
 567                                         'file-no-thumb-animation-' . $ext,
 568                                         'file-no-thumb-animation'
 569                                 )->plain();
 570
 571                                 $out->addWikiText( <<<EOT
 572 <div class="mw-noanimatethumb">{$noAnimMesg}</div>
 573 EOT
 574                                 );
 575                         }
 576
 577                         if ( !$this->displayImg->isLocal() ) {
 578                                 $this->printSharedImageText();
 579                         }
 580                 } else {
 581                         # Image does not exist
 582                         if ( !$this->getId() ) {
 583                                 $dbr = wfGetDB( DB_REPLICA );
 584
 585                                 # No article exists either
 586                                 # Show deletion log to be consistent with normal articles
 587                                 LogEventsList::showLogExtract(
 588                                         $out,
 589                                         [ 'delete', 'move' ],
 590                                         $this->getTitle()->getPrefixedText(),
 591                                         '',
 592                                         [ 'lim' => 10,
 593                                                 'conds' => [ 'log_action != ' . $dbr->addQuotes( 'revision' ) ],
 594                                                 'showIfEmpty' => false,
 595                                                 'msgKey' => [ 'moveddeleted-notice' ]
 596                                         ]
 597                                 );
 598                         }
 599
 600                         if ( $wgEnableUploads && $user->isAllowed( 'upload' ) ) {
 601                                 // Only show an upload link if the user can upload
 602                                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 603                                 $nofile = [
 604                                         'filepage-nofile-link',
 605                                         $uploadTitle->getFullURL( [ 'wpDestFile' => $this->mPage->getFile()->getName() ] )
 606                                 ];
 607                         } else {
 608                                 $nofile = 'filepage-nofile';
 609                         }
 610                         // Note, if there is an image description page, but
 611                         // no image, then this setRobotPolicy is overridden
 612                         // by Article::View().
 613                         $out->setRobotPolicy( 'noindex,nofollow' );
 614                         $out->wrapWikiMsg( "<div id='mw-imagepage-nofile' class='plainlinks'>\n$1\n</div>", $nofile );
 615                         if ( !$this->getId() && $wgSend404Code ) {
 616                                 // If there is no image, no shared image, and no description page,
 617                                 // output a 404, to be consistent with Article::showMissingArticle.
 618                                 $request->response()->statusHeader( 404 );
 619                         }
 620                 }
 621                 $out->setFileVersion( $this->displayImg );
 622         }
 623
 624         /**
 625          * Make the text under the image to say what size preview
 626          *
 627          * @param array $params parameters for thumbnail
 628          * @param string $sizeLinkBigImagePreview HTML for the current size
 629          * @return string HTML output
 630          */
 631         private function getThumbPrevText( $params, $sizeLinkBigImagePreview ) {
 632                 if ( $sizeLinkBigImagePreview ) {
 633                         // Show a different message of preview is different format from original.
 634                         $previewTypeDiffers = false;
 635                         $origExt = $thumbExt = $this->displayImg->getExtension();
 636                         if ( $this->displayImg->getHandler() ) {
 637                                 $origMime = $this->displayImg->getMimeType();
 638                                 $typeParams = $params;
 639                                 $this->displayImg->getHandler()->normaliseParams( $this->displayImg, $typeParams );
 640                                 list( $thumbExt, $thumbMime ) = $this->displayImg->getHandler()->getThumbType(
 641                                         $origExt, $origMime, $typeParams );
 642                                 if ( $thumbMime !== $origMime ) {
 643                                         $previewTypeDiffers = true;
 644                                 }
 645                         }
 646                         if ( $previewTypeDiffers ) {
 647                                 return $this->getContext()->msg( 'show-big-image-preview-differ' )->
 648                                         rawParams( $sizeLinkBigImagePreview )->
 649                                         params( strtoupper( $origExt ) )->
 650                                         params( strtoupper( $thumbExt ) )->
 651                                         parse();
 652                         } else {
 653                                 return $this->getContext()->msg( 'show-big-image-preview' )->
 654                                         rawParams( $sizeLinkBigImagePreview )->
 655                                 parse();
 656                         }
 657                 } else {
 658                         return '';
 659                 }
 660         }
 661
 662         /**
 663          * Creates an thumbnail of specified size and returns an HTML link to it
 664          * @param array $params Scaler parameters
 665          * @param int $width
 666          * @param int $height
 667          * @return string
 668          */
 669         private function makeSizeLink( $params, $width, $height ) {
 670                 $params['width'] = $width;
 671                 $params['height'] = $height;
 672                 $thumbnail = $this->displayImg->transform( $params );
 673                 if ( $thumbnail && !$thumbnail->isError() ) {
 674                         return Html::rawElement( 'a', [
 675                                 'href' => $thumbnail->getUrl(),
 676                                 'class' => 'mw-thumbnail-link'
 677                                 ], $this->getContext()->msg( 'show-big-image-size' )->numParams(
 678                                         $thumbnail->getWidth(), $thumbnail->getHeight()
 679                                 )->parse() );
 680                 } else {
 681                         return '';
 682                 }
 683         }
 684
 685         /**
 686          * Show a notice that the file is from a shared repository
 687          */
 688         protected function printSharedImageText() {
 689                 $out = $this->getContext()->getOutput();
 690                 $this->loadFile();
 691
 692                 $descUrl = $this->mPage->getFile()->getDescriptionUrl();
 693                 $descText = $this->mPage->getFile()->getDescriptionText( $this->getContext()->getLanguage() );
 694
 695                 /* Add canonical to head if there is no local page for this shared file */
 696                 if ( $descUrl && $this->mPage->getId() == 0 ) {
 697                         $out->setCanonicalUrl( $descUrl );
 698                 }
 699
 700                 $wrap = "<div class=\"sharedUploadNotice\">\n$1\n</div>\n";
 701                 $repo = $this->mPage->getFile()->getRepo()->getDisplayName();
 702
 703                 if ( $descUrl &&
 704                         $descText &&
 705                         $this->getContext()->msg( 'sharedupload-desc-here' )->plain() !== '-'
 706                 ) {
 707                         $out->wrapWikiMsg( $wrap, [ 'sharedupload-desc-here', $repo, $descUrl ] );
 708                 } elseif ( $descUrl &&
 709                         $this->getContext()->msg( 'sharedupload-desc-there' )->plain() !== '-'
 710                 ) {
 711                         $out->wrapWikiMsg( $wrap, [ 'sharedupload-desc-there', $repo, $descUrl ] );
 712                 } else {
 713                         $out->wrapWikiMsg( $wrap, [ 'sharedupload', $repo ], ''/*BACKCOMPAT*/ );
 714                 }
 715
 716                 if ( $descText ) {
 717                         $this->mExtraDescription = $descText;
 718                 }
 719         }
 720
 721         public function getUploadUrl() {
 722                 $this->loadFile();
 723                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 724                 return $uploadTitle->getFullURL( [
 725                         'wpDestFile' => $this->mPage->getFile()->getName(),
 726                         'wpForReUpload' => 1
 727                 ] );
 728         }
 729
 730         /**
 731          * Print out the various links at the bottom of the image page, e.g. reupload,
 732          * external editing (and instructions link) etc.
 733          */
 734         protected function uploadLinksBox() {
 735                 global $wgEnableUploads;
 736
 737                 if ( !$wgEnableUploads ) {
 738                         return;
 739                 }
 740
 741                 $this->loadFile();
 742                 if ( !$this->mPage->getFile()->isLocal() ) {
 743                         return;
 744                 }
 745
 746                 $out = $this->getContext()->getOutput();
 747                 $out->addHTML( "<ul>\n" );
 748
 749                 # "Upload a new version of this file" link
 750                 $canUpload = $this->getTitle()->quickUserCan( 'upload', $this->getContext()->getUser() );
 751                 if ( $canUpload && UploadBase::userCanReUpload(
 752                                 $this->getContext()->getUser(),
 753                                 $this->mPage->getFile() )
 754                 ) {
 755                         $ulink = Linker::makeExternalLink(
 756                                 $this->getUploadUrl(),
 757                                 $this->getContext()->msg( 'uploadnewversion-linktext' )->text()
 758                         );
 759                         $out->addHTML( "<li id=\"mw-imagepage-reupload-link\">"
 760                                 . "<div class=\"plainlinks\">{$ulink}</div></li>\n" );
 761                 } else {
 762                         $out->addHTML( "<li id=\"mw-imagepage-upload-disallowed\">"
 763                                 . $this->getContext()->msg( 'upload-disallowed-here' )->escaped() . "</li>\n" );
 764                 }
 765
 766                 $out->addHTML( "</ul>\n" );
 767         }
 768
 769         /**
 770          * For overloading
 771          */
 772         protected function closeShowImage() {
 773         }
 774
 775         /**
 776          * If the page we've just displayed is in the "Image" namespace,
 777          * we follow it with an upload history of the image and its usage.
 778          */
 779         protected function imageHistory() {
 780                 $this->loadFile();
 781                 $out = $this->getContext()->getOutput();
 782                 $pager = new ImageHistoryPseudoPager( $this );
 783                 $out->addHTML( $pager->getBody() );
 784                 $out->preventClickjacking( $pager->getPreventClickjacking() );
 785
 786                 $this->mPage->getFile()->resetHistory(); // free db resources
 787
 788                 # Exist check because we don't want to show this on pages where an image
 789                 # doesn't exist along with the noimage message, that would suck. -ævar
 790                 if ( $this->mPage->getFile()->exists() ) {
 791                         $this->uploadLinksBox();
 792                 }
 793         }
 794
 795         /**
 796          * @param string $target
 797          * @param int $limit
 798          * @return ResultWrapper
 799          */
 800         protected function queryImageLinks( $target, $limit ) {
 801                 $dbr = wfGetDB( DB_REPLICA );
 802
 803                 return $dbr->select(
 804                         [ 'imagelinks', 'page' ],
 805                         [ 'page_namespace', 'page_title', 'il_to' ],
 806                         [ 'il_to' => $target, 'il_from = page_id' ],
 807                         __METHOD__,
 808                         [ 'LIMIT' => $limit + 1, 'ORDER BY' => 'il_from', ]
 809                 );
 810         }
 811
 812         protected function imageLinks() {
 813                 $limit = 100;
 814
 815                 $out = $this->getContext()->getOutput();
 816
 817                 $rows = [];
 818                 $redirects = [];
 819                 foreach ( $this->getTitle()->getRedirectsHere( NS_FILE ) as $redir ) {
 820                         $redirects[$redir->getDBkey()] = [];
 821                         $rows[] = (object)[
 822                                 'page_namespace' => NS_FILE,
 823                                 'page_title' => $redir->getDBkey(),
 824                         ];
 825                 }
 826
 827                 $res = $this->queryImageLinks( $this->getTitle()->getDBkey(), $limit + 1 );
 828                 foreach ( $res as $row ) {
 829                         $rows[] = $row;
 830                 }
 831                 $count = count( $rows );
 832
 833                 $hasMore = $count > $limit;
 834                 if ( !$hasMore && count( $redirects ) ) {
 835                         $res = $this->queryImageLinks( array_keys( $redirects ),
 836                                 $limit - count( $rows ) + 1 );
 837                         foreach ( $res as $row ) {
 838                                 $redirects[$row->il_to][] = $row;
 839                                 $count++;
 840                         }
 841                         $hasMore = ( $res->numRows() + count( $rows ) ) > $limit;
 842                 }
 843
 844                 if ( $count == 0 ) {
 845                         $out->wrapWikiMsg(
 846                                 Html::rawElement( 'div',
 847                                         [ 'id' => 'mw-imagepage-nolinkstoimage' ], "\n$1\n" ),
 848                                 'nolinkstoimage'
 849                         );
 850                         return;
 851                 }
 852
 853                 $out->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
 854                 if ( !$hasMore ) {
 855                         $out->addWikiMsg( 'linkstoimage', $count );
 856                 } else {
 857                         // More links than the limit. Add a link to [[Special:Whatlinkshere]]
 858                         $out->addWikiMsg( 'linkstoimage-more',
 859                                 $this->getContext()->getLanguage()->formatNum( $limit ),
 860                                 $this->getTitle()->getPrefixedDBkey()
 861                         );
 862                 }
 863
 864                 $out->addHTML(
 865                         Html::openElement( 'ul',
 866                                 [ 'class' => 'mw-imagepage-linkstoimage' ] ) . "\n"
 867                 );
 868                 $count = 0;
 869
 870                 // Sort the list by namespace:title
 871                 usort( $rows, [ $this, 'compare' ] );
 872
 873                 // Create links for every element
 874                 $currentCount = 0;
 875                 foreach ( $rows as $element ) {
 876                         $currentCount++;
 877                         if ( $currentCount > $limit ) {
 878                                 break;
 879                         }
 880
 881                         $query = [];
 882                         # Add a redirect=no to make redirect pages reachable
 883                         if ( isset( $redirects[$element->page_title] ) ) {
 884                                 $query['redirect'] = 'no';
 885                         }
 886                         $link = Linker::linkKnown(
 887                                 Title::makeTitle( $element->page_namespace, $element->page_title ),
 888                                 null, [], $query
 889                         );
 890                         if ( !isset( $redirects[$element->page_title] ) ) {
 891                                 # No redirects
 892                                 $liContents = $link;
 893                         } elseif ( count( $redirects[$element->page_title] ) === 0 ) {
 894                                 # Redirect without usages
 895                                 $liContents = $this->getContext()->msg( 'linkstoimage-redirect' )
 896                                         ->rawParams( $link, '' )
 897                                         ->parse();
 898                         } else {
 899                                 # Redirect with usages
 900                                 $li = '';
 901                                 foreach ( $redirects[$element->page_title] as $row ) {
 902                                         $currentCount++;
 903                                         if ( $currentCount > $limit ) {
 904                                                 break;
 905                                         }
 906
 907                                         $link2 = Linker::linkKnown( Title::makeTitle( $row->page_namespace, $row->page_title ) );
 908                                         $li .= Html::rawElement(
 909                                                 'li',
 910                                                 [ 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ],
 911                                                 $link2
 912                                                 ) . "\n";
 913                                 }
 914
 915                                 $ul = Html::rawElement(
 916                                         'ul',
 917                                         [ 'class' => 'mw-imagepage-redirectstofile' ],
 918                                         $li
 919                                         ) . "\n";
 920                                 $liContents = $this->getContext()->msg( 'linkstoimage-redirect' )->rawParams(
 921                                         $link, $ul )->parse();
 922                         }
 923                         $out->addHTML( Html::rawElement(
 924                                         'li',
 925                                         [ 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ],
 926                                         $liContents
 927                                 ) . "\n"
 928                         );
 929
 930                 };
 931                 $out->addHTML( Html::closeElement( 'ul' ) . "\n" );
 932                 $res->free();
 933
 934                 // Add a links to [[Special:Whatlinkshere]]
 935                 if ( $count > $limit ) {
 936                         $out->addWikiMsg( 'morelinkstoimage', $this->getTitle()->getPrefixedDBkey() );
 937                 }
 938                 $out->addHTML( Html::closeElement( 'div' ) . "\n" );
 939         }
 940
 941         protected function imageDupes() {
 942                 $this->loadFile();
 943                 $out = $this->getContext()->getOutput();
 944
 945                 $dupes = $this->mPage->getDuplicates();
 946                 if ( count( $dupes ) == 0 ) {
 947                         return;
 948                 }
 949
 950                 $out->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
 951                 $out->addWikiMsg( 'duplicatesoffile',
 952                         $this->getContext()->getLanguage()->formatNum( count( $dupes ) ), $this->getTitle()->getDBkey()
 953                 );
 954                 $out->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
 955
 956                 /**
 957                  * @var $file File
 958                  */
 959                 foreach ( $dupes as $file ) {
 960                         $fromSrc = '';
 961                         if ( $file->isLocal() ) {
 962                                 $link = Linker::linkKnown( $file->getTitle() );
 963                         } else {
 964                                 $link = Linker::makeExternalLink( $file->getDescriptionUrl(),
 965                                         $file->getTitle()->getPrefixedText() );
 966                                 $fromSrc = $this->getContext()->msg(
 967                                         'shared-repo-from',
 968                                         $file->getRepo()->getDisplayName()
 969                                 )->escaped();
 970                         }
 971                         $out->addHTML( "<li>{$link} {$fromSrc}</li>\n" );
 972                 }
 973                 $out->addHTML( "</ul></div>\n" );
 974         }
 975
 976         /**
 977          * Delete the file, or an earlier version of it
 978          */
 979         public function delete() {
 980                 $file = $this->mPage->getFile();
 981                 if ( !$file->exists() || !$file->isLocal() || $file->getRedirected() ) {
 982                         // Standard article deletion
 983                         parent::delete();
 984                         return;
 985                 }
 986
 987                 $deleter = new FileDeleteForm( $file );
 988                 $deleter->execute();
 989         }
 990
 991         /**
 992          * Display an error with a wikitext description
 993          *
 994          * @param string $description
 995          */
 996         function showError( $description ) {
 997                 $out = $this->getContext()->getOutput();
 998                 $out->setPageTitle( $this->getContext()->msg( 'internalerror' ) );
 999                 $out->setRobotPolicy( 'noindex,nofollow' );
1000                 $out->setArticleRelated( false );
1001                 $out->enableClientCache( false );
1002                 $out->addWikiText( $description );
1003         }
1004
1005         /**
1006          * Callback for usort() to do link sorts by (namespace, title)
1007          * Function copied from Title::compare()
1008          *
1009          * @param object $a Object page to compare with
1010          * @param object $b Object page to compare with
1011          * @return int Result of string comparison, or namespace comparison
1012          */
1013         protected function compare( $a, $b ) {
1014                 if ( $a->page_namespace == $b->page_namespace ) {
1015                         return strcmp( $a->page_title, $b->page_title );
1016                 } else {
1017                         return $a->page_namespace - $b->page_namespace;
1018                 }
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 array
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 bug #8858).
1039                 if ( !isset( $wgImageLimits[$option] ) ) {
1040                         // Default to the first offset in $wgImageLimits
1041                         $option = 0;
1042                 }
1043
1044                 return isset( $wgImageLimits[$option] )
1045                         ? $wgImageLimits[$option]
1046                         : [ 800, 600 ]; // if nothing is set, fallback to a hardcoded default
1047         }
1048
1049         /**
1050          * Output a drop-down box for language options for the file
1051          *
1052          * @param array $langChoices Array of string language codes
1053          * @param string $renderLang Language code for the language we want the file to rendered in.
1054          * @return string HTML to insert underneath image.
1055          */
1056         protected function doRenderLangOpt( array $langChoices, $renderLang ) {
1057                 global $wgScript;
1058                 $opts = '';
1059
1060                 $matchedRenderLang = $this->displayImg->getMatchedLanguage( $renderLang );
1061
1062                 foreach ( $langChoices as $lang ) {
1063                         $opts .= $this->createXmlOptionStringForLanguage(
1064                                 $lang,
1065                                 $matchedRenderLang === $lang
1066                         );
1067                 }
1068
1069                 // Allow for the default case in an svg <switch> that is displayed if no
1070                 // systemLanguage attribute matches
1071                 $opts .= "\n" .
1072                         Xml::option(
1073                                 $this->getContext()->msg( 'img-lang-default' )->text(),
1074                                 'und',
1075                                 is_null( $matchedRenderLang )
1076                         );
1077
1078                 $select = Html::rawElement(
1079                         'select',
1080                         [ 'id' => 'mw-imglangselector', 'name' => 'lang' ],
1081                         $opts
1082                 );
1083                 $submit = Xml::submitButton( $this->getContext()->msg( 'img-lang-go' )->text() );
1084
1085                 $formContents = $this->getContext()->msg( 'img-lang-info' )
1086                         ->rawParams( $select, $submit )
1087                         ->parse();
1088                 $formContents .= Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() );
1089
1090                 $langSelectLine = Html::rawElement( 'div', [ 'id' => 'mw-imglangselector-line' ],
1091                         Html::rawElement( 'form', [ 'action' => $wgScript ], $formContents )
1092                 );
1093                 return $langSelectLine;
1094         }
1095
1096         /**
1097          * @param $lang string
1098          * @param $selected bool
1099          * @return string
1100          */
1101         private function createXmlOptionStringForLanguage( $lang, $selected ) {
1102                 $code = LanguageCode::bcp47( $lang );
1103                 $name = Language::fetchLanguageName( $code, $this->getContext()->getLanguage()->getCode() );
1104                 if ( $name !== '' ) {
1105                         $display = $this->getContext()->msg( 'img-lang-opt', $code, $name )->text();
1106                 } else {
1107                         $display = $code;
1108                 }
1109                 return "\n" .
1110                         Xml::option(
1111                                 $display,
1112                                 $lang,
1113                                 $selected
1114                         );
1115         }
1116
1117         /**
1118          * Get the width and height to display image at.
1119          *
1120          * @note This method assumes that it is only called if one
1121          *  of the dimensions are bigger than the max, or if the
1122          *  image is vectorized.
1123          *
1124          * @param int $maxWidth Max width to display at
1125          * @param int $maxHeight Max height to display at
1126          * @param int $width Actual width of the image
1127          * @param int $height Actual height of the image
1128          * @throws MWException
1129          * @return array Array (width, height)
1130          */
1131         protected function getDisplayWidthHeight( $maxWidth, $maxHeight, $width, $height ) {
1132                 if ( !$maxWidth || !$maxHeight ) {
1133                         // should never happen
1134                         throw new MWException( 'Using a choice from $wgImageLimits that is 0x0' );
1135                 }
1136
1137                 if ( !$width || !$height ) {
1138                         return [ 0, 0 ];
1139                 }
1140
1141                 # Calculate the thumbnail size.
1142                 if ( $width <= $maxWidth && $height <= $maxHeight ) {
1143                         // Vectorized image, do nothing.
1144                 } elseif ( $width / $height >= $maxWidth / $maxHeight ) {
1145                         # The limiting factor is the width, not the height.
1146                         $height = round( $height * $maxWidth / $width );
1147                         $width = $maxWidth;
1148                         # Note that $height <= $maxHeight now.
1149                 } else {
1150                         $newwidth = floor( $width * $maxHeight / $height );
1151                         $height = round( $height * $newwidth / $width );
1152                         $width = $newwidth;
1153                         # Note that $height <= $maxHeight now, but might not be identical
1154                         # because of rounding.
1155                 }
1156                 return [ $width, $height ];
1157         }
1158
1159         /**
1160          * Get alternative thumbnail sizes.
1161          *
1162          * @note This will only list several alternatives if thumbnails are rendered on 404
1163          * @param int $origWidth Actual width of image
1164          * @param int $origHeight Actual height of image
1165          * @return array An array of [width, height] pairs.
1166          */
1167         protected function getThumbSizes( $origWidth, $origHeight ) {
1168                 global $wgImageLimits;
1169                 if ( $this->displayImg->getRepo()->canTransformVia404() ) {
1170                         $thumbSizes = $wgImageLimits;
1171                         // Also include the full sized resolution in the list, so
1172                         // that users know they can get it. This will link to the
1173                         // original file asset if mustRender() === false. In the case
1174                         // that we mustRender, some users have indicated that they would
1175                         // find it useful to have the full size image in the rendered
1176                         // image format.
1177                         $thumbSizes[] = [ $origWidth, $origHeight ];
1178                 } else {
1179                         # Creating thumb links triggers thumbnail generation.
1180                         # Just generate the thumb for the current users prefs.
1181                         $thumbSizes = [
1182                                 $this->getImageLimitsFromOption( $this->getContext()->getUser(), 'thumbsize' )
1183                         ];
1184                         if ( !$this->displayImg->mustRender() ) {
1185                                 // We can safely include a link to the "full-size" preview,
1186                                 // without actually rendering.
1187                                 $thumbSizes[] = [ $origWidth, $origHeight ];
1188                         }
1189                 }
1190                 return $thumbSizes;
1191         }
1192
1193         /**
1194          * @see WikiFilePage::getFile
1195          * @return bool|File
1196          */
1197         public function getFile() {
1198                 return $this->mPage->getFile();
1199         }
1200
1201         /**
1202          * @see WikiFilePage::isLocal
1203          * @return bool
1204          */
1205         public function isLocal() {
1206                 return $this->mPage->isLocal();
1207         }
1208
1209         /**
1210          * @see WikiFilePage::getDuplicates
1211          * @return array|null
1212          */
1213         public function getDuplicates() {
1214                 return $this->mPage->getDuplicates();
1215         }
1216
1217         /**
1218          * @see WikiFilePage::getForeignCategories
1219          * @return TitleArray|Title[]
1220          */
1221         public function getForeignCategories() {
1222                 $this->mPage->getForeignCategories();
1223         }
1224
1225 }