wikimedia/mediawiki-core

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includes/page/ImagePage.php

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<?php
/**
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 */

use MediaWiki\Html\Html;
use MediaWiki\Linker\Linker;
use MediaWiki\MainConfigNames;
use MediaWiki\MediaWikiServices;
use MediaWiki\Request\WebRequest;
use MediaWiki\SpecialPage\SpecialPage;
use MediaWiki\Title\Title;
use MediaWiki\Title\TitleArrayFromResult;
use Wikimedia\Rdbms\IResultWrapper;

/**
 * Rendering of file description pages.
 *
 * @ingroup Media
 * @method WikiFilePage getPage()
 */
class ImagePage extends Article {
    use MediaFileTrait;

    /** @var File|false Only temporary false, most code can assume this is a File */
    private $displayImg;

    /** @var FileRepo */
    private $repo;

    /** @var bool */
    private $fileLoaded;

    /** @var string|false Guaranteed to be HTML, {@see File::getDescriptionText} */
    protected $mExtraDescription = false;

    /**
     * @param Title $title
     * @return WikiFilePage
     */
    protected function newPage( Title $title ) {
        // Overload mPage with a file-specific page
        return new WikiFilePage( $title );
    }

    /**
     * @param File $file
     * @return void
     */
    public function setFile( $file ) {
        $this->getPage()->setFile( $file );
        $this->displayImg = $file;
        $this->fileLoaded = true;
    }

    protected function loadFile() {
        if ( $this->fileLoaded ) {
            return;
        }
        $this->fileLoaded = true;

        $this->displayImg = $img = false;

        $this->getHookRunner()->onImagePageFindFile( $this, $img, $this->displayImg );
        if ( !$img ) { // not set by hook?
            $services = MediaWikiServices::getInstance();
            $img = $services->getRepoGroup()->findFile( $this->getTitle() );
            if ( !$img ) {
                $img = $services->getRepoGroup()->getLocalRepo()->newFile( $this->getTitle() );
            }
        }
        // @phan-suppress-next-line PhanTypeMismatchArgumentNullable should be set
        $this->getPage()->setFile( $img );
        if ( !$this->displayImg ) { // not set by hook?
            // @phan-suppress-next-line PhanPossiblyNullTypeMismatchProperty should be set
            $this->displayImg = $img;
        }
        $this->repo = $img->getRepo();
    }

    public function view() {
        $context = $this->getContext();
        $showEXIF = $context->getConfig()->get( MainConfigNames::ShowEXIF );

        // For action=render, include body text only; none of the image extras
        if ( $this->viewIsRenderAction ) {
            parent::view();
            return;
        }

        $out = $context->getOutput();
        $request = $context->getRequest();
        $diff = $request->getVal( 'diff' );

        if ( $this->getTitle()->getNamespace() !== NS_FILE || ( $diff !== null && $this->isDiffOnlyView() ) ) {
            parent::view();
            return;
        }

        $this->loadFile();

        if (
            $this->getTitle()->getNamespace() === NS_FILE
            && $this->getFile()->getRedirected()
        ) {
            if (
                $this->getTitle()->getDBkey() == $this->getFile()->getName()
                || $diff !== null
            ) {
                $request->setVal( 'diffonly', 'true' );
            }

            parent::view();
            return;
        }

        if ( $showEXIF && $this->displayImg->exists() ) {
            // @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
            $formattedMetadata = $this->displayImg->formatMetadata( $this->getContext() );
        } else {
            $formattedMetadata = false;
        }

        if ( !$diff && $this->displayImg->exists() ) {
            $out->addHTML( $this->showTOC( (bool)$formattedMetadata ) );
        }

        if ( !$diff ) {
            $this->openShowImage();
        }

        # No need to display noarticletext, we use our own message, output in openShowImage()
        if ( $this->getPage()->getId() ) {
            $out->addHTML( Html::openElement( 'div', [ 'id' => 'mw-imagepage-content' ] ) );
            // NS_FILE pages render mostly in the user language (like special pages),
            // except the editable wikitext content, which is rendered in the page content
            // language by the parent class.
            parent::view();
            $out->addHTML( Html::closeElement( 'div' ) );
        } else {
            # Just need to set the right headers
            $out->setArticleFlag( true );
            $out->setPageTitle( $this->getTitle()->getPrefixedText() );
            $this->getPage()->doViewUpdates(
                $context->getAuthority(),
                $this->getOldID()
            );
        }

        # Show shared description, if needed
        if ( $this->mExtraDescription ) {
            $fol = $context->msg( 'shareddescriptionfollows' );
            if ( !$fol->isDisabled() ) {
                $out->addWikiTextAsInterface( $fol->plain() );
            }
            $out->addHTML(
                Html::rawElement(
                    'div',
                    [ 'id' => 'shared-image-desc' ],
                    $this->mExtraDescription
                ) . "\n"
            );
        }

        $this->closeShowImage();
        $this->imageHistory();
        // TODO: Cleanup the following

        $out->addHTML( Xml::element( 'h2',
            [ 'id' => 'filelinks' ],
                $context->msg( 'imagelinks' )->text() ) . "\n" );
        $this->imageDupes();
        # @todo FIXME: For some freaky reason, we can't redirect to foreign images.
        # Yet we return metadata about the target. Definitely an issue in the FileRepo
        $this->imageLinks();

        # Allow extensions to add something after the image links
        $html = '';
        $this->getHookRunner()->onImagePageAfterImageLinks( $this, $html );
        if ( $html ) {
            $out->addHTML( $html );
        }

        if ( $formattedMetadata ) {
            $out->addHTML( Xml::element(
                'h2',
                [ 'id' => 'metadata' ],
                    $context->msg( 'metadata' )->text() ) . "\n" );
            $out->wrapWikiTextAsInterface(
                'mw-imagepage-section-metadata',
                $this->makeMetadataTable( $formattedMetadata )
            );
            $out->addModules( [ 'mediawiki.action.view.metadata' ] );
        }

        // Add remote Filepage.css
        if ( !$this->repo->isLocal() ) {
            $css = $this->repo->getDescriptionStylesheetUrl();
            if ( $css ) {
                $out->addStyle( $css );
            }
        }

        $out->addModuleStyles( [
            'mediawiki.action.view.filepage', // Add MediaWiki styles for a file page
        ] );
    }

    /**
     * @return File
     */
    public function getDisplayedFile() {
        $this->loadFile();
        return $this->displayImg;
    }

    /**
     * Create the TOC
     *
     * @param bool $metadata Whether or not to show the metadata link
     * @return string
     */
    protected function showTOC( $metadata ) {
        $r = [
            Html::rawElement(
                'li',
                [],
                Html::rawElement(
                    'a',
                    [ 'href' => '#file' ],
                    $this->getContext()->msg( 'file-anchor-link' )->escaped()
                )
            ),
            Html::rawElement(
                'li',
                [],
                Html::rawElement(
                    'a',
                    [ 'href' => '#filehistory' ],
                    $this->getContext()->msg( 'filehist' )->escaped()
                )
            ),
            Html::rawElement(
                'li',
                [],
                Html::rawElement(
                    'a',
                    [ 'href' => '#filelinks' ],
                    $this->getContext()->msg( 'imagelinks' )->escaped()
                )
            ),
        ];

        $this->getHookRunner()->onImagePageShowTOC( $this, $r );

        if ( $metadata ) {
            $r[] = Html::rawElement(
                'li',
                [],
                Html::rawElement(
                    'a',
                    [ 'href' => '#metadata' ],
                    $this->getContext()->msg( 'metadata' )->escaped()
                )
            );
        }

        return Html::rawElement( 'ul', [
            'id' => 'filetoc',
            'role' => 'navigation'
        ], implode( "\n", $r ) );
    }

    /**
     * Make a table with metadata to be shown in the output page.
     *
     * @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
     *
     * @param array $metadata The array containing the Exif data
     * @return string The metadata table. This is treated as Wikitext (!)
     */
    protected function makeMetadataTable( $metadata ) {
        $r = $this->getContext()->msg( 'metadata-help' )->plain();
        // Initial state of collapsible rows is collapsed
        // see mediawiki.action.view.filepage.less and mediawiki.action.view.metadata module.
        $r .= "<table id=\"mw_metadata\" class=\"mw_metadata collapsed\">\n";
        foreach ( $metadata as $type => $stuff ) {
            foreach ( $stuff as $v ) {
                $class = str_replace( ' ', '_', $v['id'] );
                if ( $type === 'collapsed' ) {
                    $class .= ' mw-metadata-collapsible';
                }
                $r .= Html::rawElement( 'tr',
                    [ 'class' => $class ],
                    Html::rawElement( 'th', [], $v['name'] )
                        . Html::rawElement( 'td', [], $v['value'] )
                );
            }
        }
        $r .= "</table>\n";
        return $r;
    }

    /**
     * Returns language code to be used for displaying the image, based on request context and
     * languages available in the file.
     *
     * @param WebRequest $request
     * @param File $file
     * @return string|null a valid IETF language tag
     */
    private function getLanguageForRendering( WebRequest $request, File $file ) {
        $handler = $file->getHandler();
        if ( !$handler ) {
            return null;
        }

        $requestLanguage = $request->getVal( 'lang' );
        if ( $requestLanguage === null ) {
            // For on File pages about a translatable SVG, decide which
            // language to render the large thumbnail in (T310445)
            $services = MediaWikiServices::getInstance();
            $variantLangCode = $services->getLanguageConverterFactory()
                ->getLanguageConverter( $services->getContentLanguage() )
                ->getPreferredVariant();
            $requestLanguage = LanguageCode::bcp47( $variantLangCode );
        }
        if ( $handler->validateParam( 'lang', $requestLanguage ) ) {
            return $file->getMatchedLanguage( $requestLanguage );
        }

        return $handler->getDefaultRenderLanguage( $file );
    }

    protected function openShowImage() {
        $context = $this->getContext();
        $mainConfig = $context->getConfig();
        $enableUploads = $mainConfig->get( MainConfigNames::EnableUploads );
        $send404Code = $mainConfig->get( MainConfigNames::Send404Code );
        $svgMaxSize = $mainConfig->get( MainConfigNames::SVGMaxSize );
        $enableLegacyMediaDOM = $mainConfig->get( MainConfigNames::ParserEnableLegacyMediaDOM );
        $this->loadFile();
        $out = $context->getOutput();
        $user = $context->getUser();
        $lang = $context->getLanguage();
        $dirmark = $lang->getDirMarkEntity();
        $request = $context->getRequest();

        if ( $this->displayImg->exists() ) {
            [ $maxWidth, $maxHeight ] = $this->getImageLimitsFromOption( $user, 'imagesize' );

            # image
            $page = $request->getIntOrNull( 'page' );
            if ( $page === null ) {
                $params = [];
                $page = 1;
            } else {
                $params = [ 'page' => $page ];
            }

            $renderLang = $this->getLanguageForRendering( $request, $this->displayImg );
            if ( $renderLang !== null ) {
                $params['lang'] = $renderLang;
            }

            $width_orig = $this->displayImg->getWidth( $page );
            $width = $width_orig;
            $height_orig = $this->displayImg->getHeight( $page );
            $height = $height_orig;

            $filename = wfEscapeWikiText( $this->displayImg->getName() );
            $linktext = $filename;

            $this->getHookRunner()->onImageOpenShowImageInlineBefore( $this, $out );

            if ( $this->displayImg->allowInlineDisplay() ) {
                # image
                # "Download high res version" link below the image
                # $msgsize = $this->getContext()->msg( 'file-info-size', $width_orig, $height_orig,
                #   Language::formatSize( $this->displayImg->getSize() ), $mime )->escaped();
                # We'll show a thumbnail of this image
                if ( $width > $maxWidth ||
                    $height > $maxHeight ||
                    $this->displayImg->isVectorized()
                ) {
                    [ $width, $height ] = $this->displayImg->getDisplayWidthHeight(
                        $maxWidth, $maxHeight, $page
                    );
                    $linktext = $context->msg( 'show-big-image' )->escaped();

                    $thumbSizes = $this->getThumbSizes( $width_orig, $height_orig );
                    # Generate thumbnails or thumbnail links as needed...
                    $otherSizes = [];
                    foreach ( $thumbSizes as $size ) {
                        // We include a thumbnail size in the list, if it is
                        // less than or equal to the original size of the image
                        // asset ($width_orig/$height_orig). We also exclude
                        // the current thumbnail's size ($width/$height)
                        // since that is added to the message separately, so
                        // it can be denoted as the current size being shown.
                        // Vectorized images are limited by $wgSVGMaxSize big,
                        // so all thumbs less than or equal that are shown.
                        if ( ( ( $size[0] <= $width_orig && $size[1] <= $height_orig )
                                || ( $this->displayImg->isVectorized()
                                    && max( $size[0], $size[1] ) <= $svgMaxSize )
                            )
                            && $size[0] != $width && $size[1] != $height
                            && $size[0] != $maxWidth && $size[1] != $maxHeight
                        ) {
                            $sizeLink = $this->makeSizeLink( $params, $size[0], $size[1] );
                            if ( $sizeLink ) {
                                $otherSizes[] = $sizeLink;
                            }
                        }
                    }
                    $otherSizes = array_unique( $otherSizes );

                    $sizeLinkBigImagePreview = $this->makeSizeLink( $params, $width, $height );
                    $msgsmall = $this->getThumbPrevText( $params, $sizeLinkBigImagePreview );
                    if ( count( $otherSizes ) ) {
                        $msgsmall .= ' ' .
                        Html::rawElement(
                            'span',
                            [ 'class' => 'mw-filepage-other-resolutions' ],
                            $context->msg( 'show-big-image-other' )
                                ->rawParams( $lang->pipeList( $otherSizes ) )
                                ->params( count( $otherSizes ) )
                                ->parse()
                        );
                    }
                } elseif ( $width == 0 && $height == 0 ) {
                    # Some sort of audio file that doesn't have dimensions
                    # Don't output a no hi res message for such a file
                    $msgsmall = '';
                } else {
                    # Image is small enough to show full size on image page
                    $msgsmall = $this->getContext()->msg( 'file-nohires' )->parse();
                }

                $params['width'] = $width;
                $params['height'] = $height;
                $params['isFilePageThumb'] = true;
                // Allow the MediaHandler to handle query string parameters on the file page,
                // e.g. start time for videos (T203994)
                $params['imagePageParams'] = $request->getQueryValuesOnly();
                $thumbnail = $this->displayImg->transform( $params );
                Linker::processResponsiveImages( $this->displayImg, $thumbnail, $params );

                $anchorclose = Html::rawElement(
                    'div',
                    [ 'class' => 'mw-filepage-resolutioninfo' ],
                    $msgsmall
                );

                $isMulti = $this->displayImg->isMultipage() && $this->displayImg->pageCount() > 1;
                if ( $isMulti ) {
                    $out->addModules( 'mediawiki.page.image.pagination' );
                    /* TODO: multipageimage class is deprecated since Jan 2023 */
                    $out->addHTML( '<div class="mw-filepage-multipage multipageimage">' );
                }

                if ( $thumbnail ) {
                    $options = [
                        'alt' => $this->displayImg->getTitle()->getPrefixedText(),
                        'file-link' => true,
                    ];
                    $out->addHTML(
                        Html::rawElement(
                            'div',
                            [ 'class' => 'fullImageLink', 'id' => 'file' ],
                            $thumbnail->toHtml( $options ) . $anchorclose
                        ) . "\n"
                    );
                }

                if ( $isMulti ) {
                    $linkPrev = $linkNext = '';
                    $count = $this->displayImg->pageCount();
                    $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
                    if ( !$enableLegacyMediaDOM ) {
                        $out->addModules( 'mediawiki.page.media' );
                    }

                    if ( $page > 1 ) {
                        $label = $context->msg( 'imgmultipageprev' )->text();
                        // on the client side, this link is generated in ajaxifyPageNavigation()
                        // in the mediawiki.page.image.pagination module
                        $linkPrev = $linkRenderer->makeKnownLink(
                            $this->getTitle(),
                            $label,
                            [],
                            [ 'page' => $page - 1 ]
                        );
                        $thumbPrevPage = Linker::makeThumbLinkObj(
                            $this->getTitle(),
                            $this->displayImg,
                            $linkPrev,
                            $label,
                            'none',
                            [ 'page' => $page - 1, 'isFilePageThumb' => true ]
                        );
                    } else {
                        $thumbPrevPage = '';
                    }

                    if ( $page < $count ) {
                        $label = $context->msg( 'imgmultipagenext' )->text();
                        $linkNext = $linkRenderer->makeKnownLink(
                            $this->getTitle(),
                            $label,
                            [],
                            [ 'page' => $page + 1 ]
                        );
                        $thumbNextPage = Linker::makeThumbLinkObj(
                            $this->getTitle(),
                            $this->displayImg,
                            $linkNext,
                            $label,
                            'none',
                            [ 'page' => $page + 1, 'isFilePageThumb' => true ]
                        );
                    } else {
                        $thumbNextPage = '';
                    }

                    $script = $mainConfig->get( MainConfigNames::Script );

                    $formParams = [
                        'name' => 'pageselector',
                        'action' => $script,
                    ];
                    $options = [];
                    for ( $i = 1; $i <= $count; $i++ ) {
                        $options[] = Xml::option( $lang->formatNum( $i ), (string)$i, $i == $page );
                    }
                    $select = Xml::tags( 'select',
                        [ 'id' => 'pageselector', 'name' => 'page' ],
                        implode( "\n", $options ) );

                    /* TODO: multipageimagenavbox class is deprecated since Jan 2023 */
                    $out->addHTML(
                        '<div class="mw-filepage-multipage-navigation multipageimagenavbox">' .
                        $linkPrev .
                        Xml::openElement( 'form', $formParams ) .
                        Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
                        $context->msg( 'imgmultigoto' )->rawParams( $select )->parse() .
                        $context->msg( 'word-separator' )->escaped() .
                        Xml::submitButton( $context->msg( 'imgmultigo' )->text() ) .
                        Xml::closeElement( 'form' ) .
                        "$thumbPrevPage\n$thumbNextPage\n$linkNext</div></div>"
                    );
                }
            } elseif ( $this->displayImg->isSafeFile() ) {
                # if direct link is allowed but it's not a renderable image, show an icon.
                $icon = $this->displayImg->iconThumb();

                $out->addHTML(
                    Html::rawElement(
                        'div',
                        [ 'class' => 'fullImageLink', 'id' => 'file' ],
                        $icon->toHtml( [ 'file-link' => true ] )
                    ) . "\n"
                );
            }

            $longDesc = $context->msg( 'parentheses', $this->displayImg->getLongDesc() )->text();

            $handler = $this->displayImg->getHandler();

            // If this is a filetype with potential issues, warn the user.
            if ( $handler ) {
                $warningConfig = $handler->getWarningConfig( $this->displayImg );

                if ( $warningConfig !== null ) {
                    // The warning will be displayed via CSS and JavaScript.
                    // We just need to tell the client side what message to use.
                    $output = $context->getOutput();
                    $output->addJsConfigVars( 'wgFileWarning', $warningConfig );
                    $output->addModules( $warningConfig['module'] );
                    $output->addModules( 'mediawiki.filewarning' );
                }
            }

            $medialink = "[[Media:$filename|$linktext]]";

            if ( !$this->displayImg->isSafeFile() ) {
                $warning = $context->msg( 'mediawarning' )->plain();
                // dirmark is needed here to separate the file name, which
                // most likely ends in Latin characters, from the description,
                // which may begin with the file type. In RTL environment
                // this will get messy.
                // The dirmark, however, must not be immediately adjacent
                // to the filename, because it can get copied with it.
                // See T27277.
                // phpcs:disable Generic.Files.LineLength
                $out->wrapWikiTextAsInterface( 'fullMedia', <<<EOT
<span class="dangerousLink">{$medialink}</span> $dirmark<span class="fileInfo">$longDesc</span>
EOT
                );
                // phpcs:enable
                $out->wrapWikiTextAsInterface( 'mediaWarning', $warning );
            } else {
                $out->wrapWikiTextAsInterface( 'fullMedia', <<<EOT
{$medialink} {$dirmark}<span class="fileInfo">$longDesc</span>
EOT
                );
            }

            $renderLangOptions = $this->displayImg->getAvailableLanguages();
            if ( count( $renderLangOptions ) >= 1 ) {
                $out->addHTML( $this->doRenderLangOpt( $renderLangOptions, $renderLang ) );
            }

            // Add cannot animate thumbnail warning
            if ( !$this->displayImg->canAnimateThumbIfAppropriate() ) {
                // Include the extension so wiki admins can
                // customize it on a per file-type basis
                // (aka say things like use format X instead).
                // additionally have a specific message for
                // file-no-thumb-animation-gif
                $ext = $this->displayImg->getExtension();
                $noAnimMesg = wfMessageFallback(
                    'file-no-thumb-animation-' . $ext,
                    'file-no-thumb-animation'
                )->setContext( $context )->plain();

                $out->wrapWikiTextAsInterface( 'mw-noanimatethumb', $noAnimMesg );
            }

            if ( !$this->displayImg->isLocal() ) {
                $this->printSharedImageText();
            }
        } else {
            # Image does not exist
            if ( !$this->getPage()->getId() ) {
                $dbr = $this->dbProvider->getReplicaDatabase();

                # No article exists either
                # Show deletion log to be consistent with normal articles
                LogEventsList::showLogExtract(
                    $out,
                    [ 'delete', 'move', 'protect' ],
                    $this->getTitle()->getPrefixedText(),
                    '',
                    [ 'lim' => 10,
                        'conds' => [ $dbr->expr( 'log_action', '!=', 'revision' ) ],
                        'showIfEmpty' => false,
                        'msgKey' => [ 'moveddeleted-notice' ]
                    ]
                );
            }

            if ( $enableUploads &&
                $context->getAuthority()->isAllowed( 'upload' )
            ) {
                // Only show an upload link if the user can upload
                $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
                $nofile = [
                    'filepage-nofile-link',
                    $uploadTitle->getFullURL( [
                        'wpDestFile' => $this->getFile()->getName()
                    ] )
                ];
            } else {
                $nofile = 'filepage-nofile';
            }
            // Note, if there is an image description page, but
            // no image, then this setRobotPolicy is overridden
            // by Article::View().
            $out->setRobotPolicy( 'noindex,nofollow' );
            $out->wrapWikiMsg( "<div id='mw-imagepage-nofile' class='plainlinks'>\n$1\n</div>", $nofile );
            if ( !$this->getPage()->getId() && $send404Code ) {
                // If there is no image, no shared image, and no description page,
                // output a 404, to be consistent with Article::showMissingArticle.
                $request->response()->statusHeader( 404 );
            }
        }
        $out->setFileVersion( $this->displayImg );
    }

    /**
     * Make the text under the image to say what size preview
     *
     * @param array $params parameters for thumbnail
     * @param string $sizeLinkBigImagePreview HTML for the current size
     * @return string HTML output
     */
    protected function getThumbPrevText( $params, $sizeLinkBigImagePreview ) {
        if ( $sizeLinkBigImagePreview ) {
            // Show a different message of preview is different format from original.
            $previewTypeDiffers = false;
            $origExt = $thumbExt = $this->displayImg->getExtension();
            if ( $this->displayImg->getHandler() ) {
                $origMime = $this->displayImg->getMimeType();
                $typeParams = $params;
                $this->displayImg->getHandler()->normaliseParams( $this->displayImg, $typeParams );
                [ $thumbExt, $thumbMime ] = $this->displayImg->getHandler()->getThumbType(
                    $origExt, $origMime, $typeParams );
                if ( $thumbMime !== $origMime ) {
                    $previewTypeDiffers = true;
                }
            }
            if ( $previewTypeDiffers ) {
                return $this->getContext()->msg( 'show-big-image-preview-differ' )->
                    rawParams( $sizeLinkBigImagePreview )->
                    params( strtoupper( $origExt ) )->
                    params( strtoupper( $thumbExt ) )->
                    parse();
            } else {
                return $this->getContext()->msg( 'show-big-image-preview' )->
                    rawParams( $sizeLinkBigImagePreview )->
                parse();
            }
        } else {
            return '';
        }
    }

    /**
     * Creates a thumbnail of specified size and returns an HTML link to it
     * @param array $params Scaler parameters
     * @param int $width
     * @param int $height
     * @return string
     */
    protected function makeSizeLink( $params, $width, $height ) {
        $params['width'] = $width;
        $params['height'] = $height;
        $thumbnail = $this->displayImg->transform( $params );
        if ( $thumbnail && !$thumbnail->isError() ) {
            return Html::rawElement( 'a', [
                'href' => $thumbnail->getUrl(),
                'class' => 'mw-thumbnail-link'
                ], $this->getContext()->msg( 'show-big-image-size' )->numParams(
                    $thumbnail->getWidth(), $thumbnail->getHeight()
                )->parse() );
        } else {
            return '';
        }
    }

    /**
     * Show a notice that the file is from a shared repository
     */
    protected function printSharedImageText() {
        $out = $this->getContext()->getOutput();
        $this->loadFile();

        $descUrl = $this->getFile()->getDescriptionUrl();
        $descText = $this->getFile()->getDescriptionText( $this->getContext()->getLanguage() );

        /* Add canonical to head if there is no local page for this shared file */
        if ( $descUrl && !$this->getPage()->getId() ) {
            $out->setCanonicalUrl( $descUrl );
        }

        $wrap = "<div class=\"sharedUploadNotice\">\n$1\n</div>\n";
        $repo = $this->getFile()->getRepo()->getDisplayName();

        if ( $descUrl &&
            $descText &&
            !$this->getContext()->msg( 'sharedupload-desc-here' )->isDisabled()
        ) {
            $out->wrapWikiMsg( $wrap, [ 'sharedupload-desc-here', $repo, $descUrl ] );
        } elseif ( $descUrl &&
            !$this->getContext()->msg( 'sharedupload-desc-there' )->isDisabled()
        ) {
            $out->wrapWikiMsg( $wrap, [ 'sharedupload-desc-there', $repo, $descUrl ] );
        } else {
            $out->wrapWikiMsg( $wrap, [ 'sharedupload', $repo ], ''/*BACKCOMPAT*/ );
        }

        if ( $descText ) {
            $this->mExtraDescription = $descText;
        }
    }

    public function getUploadUrl() {
        $this->loadFile();
        $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
        return $uploadTitle->getFullURL( [
            'wpDestFile' => $this->getFile()->getName(),
            'wpForReUpload' => 1
        ] );
    }

    /**
     * Add the re-upload link (or message about not being able to re-upload) to the output.
     */
    protected function uploadLinksBox() {
        if ( !$this->getContext()->getConfig()->get( MainConfigNames::EnableUploads ) ) {
            return;
        }

        $this->loadFile();
        if ( !$this->getFile()->isLocal() ) {
            return;
        }

        $canUpload = $this->getContext()->getAuthority()
            ->probablyCan( 'upload', $this->getTitle() );
        if ( $canUpload && UploadBase::userCanReUpload(
                $this->getContext()->getAuthority(),
                $this->getFile() )
        ) {
            // "Upload a new version of this file" link
            $ulink = Linker::makeExternalLink(
                $this->getUploadUrl(),
                $this->getContext()->msg( 'uploadnewversion-linktext' )->text()
            );
            $attrs = [ 'class' => 'plainlinks', 'id' => 'mw-imagepage-reupload-link' ];
            $linkPara = Html::rawElement( 'p', $attrs, $ulink );
        } else {
            // "You cannot overwrite this file." message
            $attrs = [ 'id' => 'mw-imagepage-upload-disallowed' ];
            $msg = $this->getContext()->msg( 'upload-disallowed-here' )->text();
            $linkPara = Html::element( 'p', $attrs, $msg );
        }

        $uploadLinks = Html::rawElement( 'div', [ 'class' => 'mw-imagepage-upload-links' ], $linkPara );
        $this->getContext()->getOutput()->addHTML( $uploadLinks );
    }

    /**
     * For overloading
     */
    protected function closeShowImage() {
    }

    /**
     * If the page we've just displayed is in the "Image" namespace,
     * we follow it with an upload history of the image and its usage.
     */
    protected function imageHistory() {
        $this->loadFile();
        $out = $this->getContext()->getOutput();
        $pager = new ImageHistoryPseudoPager(
            $this,
            MediaWikiServices::getInstance()->getLinkBatchFactory()
        );
        $out->addHTML( $pager->getBody() );
        $out->setPreventClickjacking( $pager->getPreventClickjacking() );

        $this->getFile()->resetHistory(); // free db resources

        # Exist check because we don't want to show this on pages where an image
        # doesn't exist along with the noimage message, that would suck. -ævar
        if ( $this->getFile()->exists() ) {
            $this->uploadLinksBox();
        }
    }

    /**
     * @param string|string[] $target
     * @param int $limit
     * @return IResultWrapper
     */
    protected function queryImageLinks( $target, $limit ) {
        return $this->dbProvider->getReplicaDatabase()->newSelectQueryBuilder()
            ->select( [ 'page_namespace', 'page_title', 'il_to' ] )
            ->from( 'imagelinks' )
            ->join( 'page', null, 'il_from = page_id' )
            ->where( [ 'il_to' => $target ] )
            ->orderBy( 'il_from' )
            ->limit( $limit + 1 )
            ->caller( __METHOD__ )->fetchResultSet();
    }

    protected function imageLinks() {
        $limit = 100;

        $out = $this->getContext()->getOutput();

        $rows = [];
        $redirects = [];
        foreach ( $this->getTitle()->getRedirectsHere( NS_FILE ) as $redir ) {
            $redirects[$redir->getDBkey()] = [];
            $rows[] = (object)[
                'page_namespace' => NS_FILE,
                'page_title' => $redir->getDBkey(),
            ];
        }

        $res = $this->queryImageLinks( $this->getTitle()->getDBkey(), $limit + 1 );
        foreach ( $res as $row ) {
            $rows[] = $row;
        }
        $count = count( $rows );

        $hasMore = $count > $limit;
        if ( !$hasMore && count( $redirects ) ) {
            $res = $this->queryImageLinks( array_keys( $redirects ),
                $limit - count( $rows ) + 1 );
            foreach ( $res as $row ) {
                $redirects[$row->il_to][] = $row;
                $count++;
            }
            $hasMore = ( $res->numRows() + count( $rows ) ) > $limit;
        }

        if ( $count == 0 ) {
            $out->wrapWikiMsg(
                Html::rawElement( 'div',
                    [ 'id' => 'mw-imagepage-nolinkstoimage' ], "\n$1\n" ),
                'nolinkstoimage'
            );
            return;
        }

        $out->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
        if ( !$hasMore ) {
            $out->addWikiMsg( 'linkstoimage', $count );
        } else {
            // More links than the limit. Add a link to [[Special:Whatlinkshere]]
            $out->addWikiMsg( 'linkstoimage-more',
                $this->getContext()->getLanguage()->formatNum( $limit ),
                $this->getTitle()->getPrefixedDBkey()
            );
        }

        $out->addHTML(
            Html::openElement( 'ul',
                [ 'class' => 'mw-imagepage-linkstoimage' ] ) . "\n"
        );
        // Sort the list by namespace:title
        usort( $rows, [ $this, 'compare' ] );

        $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();

        // Create links for every element
        $currentCount = 0;
        foreach ( $rows as $element ) {
            $currentCount++;
            if ( $currentCount > $limit ) {
                break;
            }

            $link = $linkRenderer->makeKnownLink(
                Title::makeTitle( $element->page_namespace, $element->page_title ),
                null,
                [],
                // Add a redirect=no to make redirect pages reachable
                [ 'redirect' => isset( $redirects[$element->page_title] ) ? 'no' : null ]
            );
            if ( !isset( $redirects[$element->page_title] ) ) {
                # No redirects
                $liContents = $link;
            } elseif ( count( $redirects[$element->page_title] ) === 0 ) {
                # Redirect without usages
                $liContents = $this->getContext()->msg( 'linkstoimage-redirect' )
                    ->rawParams( $link, '' )
                    ->parse();
            } else {
                # Redirect with usages
                $li = '';
                foreach ( $redirects[$element->page_title] as $row ) {
                    $currentCount++;
                    if ( $currentCount > $limit ) {
                        break;
                    }

                    $link2 = $linkRenderer->makeKnownLink(
                        Title::makeTitle( $row->page_namespace, $row->page_title ) );
                    $li .= Html::rawElement(
                        'li',
                        [ 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ],
                        $link2
                        ) . "\n";
                }

                $ul = Html::rawElement(
                    'ul',
                    [ 'class' => 'mw-imagepage-redirectstofile' ],
                    $li
                    ) . "\n";
                $liContents = $this->getContext()->msg( 'linkstoimage-redirect' )->rawParams(
                    $link, $ul )->parse();
            }
            $out->addHTML( Html::rawElement(
                    'li',
                    [ 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ],
                    $liContents
                ) . "\n"
            );

        }
        $out->addHTML( Html::closeElement( 'ul' ) . "\n" );
        $res->free();

        // Add a links to [[Special:Whatlinkshere]]
        if ( $currentCount > $limit ) {
            $out->addWikiMsg( 'morelinkstoimage', $this->getTitle()->getPrefixedDBkey() );
        }
        $out->addHTML( Html::closeElement( 'div' ) . "\n" );
    }

    protected function imageDupes() {
        $this->loadFile();
        $out = $this->getContext()->getOutput();

        $dupes = $this->getPage()->getDuplicates();
        if ( count( $dupes ) == 0 ) {
            return;
        }

        $out->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
        $out->addWikiMsg( 'duplicatesoffile',
            $this->getContext()->getLanguage()->formatNum( count( $dupes ) ), $this->getTitle()->getDBkey()
        );
        $out->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );

        $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();

        /**
         * @var File $file
         */
        foreach ( $dupes as $file ) {
            $fromSrc = '';
            if ( $file->isLocal() ) {
                $link = $linkRenderer->makeKnownLink( $file->getTitle() );
            } else {
                $link = Linker::makeExternalLink( $file->getDescriptionUrl(),
                    $file->getTitle()->getPrefixedText() );
                $fromSrc = $this->getContext()->msg(
                    'shared-repo-from',
                    $file->getRepo()->getDisplayName()
                )->escaped();
            }
            $out->addHTML( "<li>{$link} {$fromSrc}</li>\n" );
        }
        $out->addHTML( "</ul></div>\n" );
    }

    /**
     * Display an error with a wikitext description
     *
     * @param string $description
     */
    public function showError( $description ) {
        $out = $this->getContext()->getOutput();
        $out->setPageTitleMsg( $this->getContext()->msg( 'internalerror' ) );
        $out->setRobotPolicy( 'noindex,nofollow' );
        $out->setArticleRelated( false );
        $out->disableClientCache();
        $out->addWikiTextAsInterface( $description );
    }

    /**
     * Callback for usort() to do link sorts by (namespace, title)
     * Function copied from Title::compare()
     *
     * @param stdClass $a Object page to compare with
     * @param stdClass $b Object page to compare with
     * @return int Result of string comparison, or namespace comparison
     */
    protected function compare( $a, $b ) {
        return $a->page_namespace <=> $b->page_namespace
            ?: strcmp( $a->page_title, $b->page_title );
    }

    /**
     * Output a drop-down box for language options for the file
     *
     * @param array $langChoices Array of string language codes
     * @param string|null $renderLang Language code for the language we want the file to rendered in,
     *  it is pre-selected in the drop down box, use null to select the default case in the option list
     * @return string HTML to insert underneath image.
     */
    protected function doRenderLangOpt( array $langChoices, $renderLang ) {
        $context = $this->getContext();
        $script = $context->getConfig()->get( MainConfigNames::Script );
        $opts = '';

        $matchedRenderLang = $renderLang === null ? null : $this->displayImg->getMatchedLanguage( $renderLang );

        foreach ( $langChoices as $lang ) {
            $opts .= $this->createXmlOptionStringForLanguage(
                $lang,
                $matchedRenderLang === $lang
            );
        }

        // Allow for the default case in an svg <switch> that is displayed if no
        // systemLanguage attribute matches
        $opts .= "\n" .
            Xml::option(
                $context->msg( 'img-lang-default' )->text(),
                'und',
                $matchedRenderLang === null || $matchedRenderLang === 'und'
            );

        $select = Html::rawElement(
            'select',
            [ 'id' => 'mw-imglangselector', 'name' => 'lang' ],
            $opts
        );
        $submit = Xml::submitButton( $context->msg( 'img-lang-go' )->text() );

        $formContents = $context->msg( 'img-lang-info' )
            ->rawParams( $select, $submit )
            ->parse();
        $formContents .= Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() );

        $langSelectLine = Html::rawElement( 'div', [ 'id' => 'mw-imglangselector-line' ],
            Html::rawElement( 'form', [ 'action' => $script ], $formContents )
        );
        return $langSelectLine;
    }

    /**
     * @param string $lang
     * @param bool $selected
     * @return string
     */
    private function createXmlOptionStringForLanguage( $lang, $selected ) {
        // TODO: There is no good way to get the language name of a BCP code,
        // as MW language codes take precedence
        $name = MediaWikiServices::getInstance()
            ->getLanguageNameUtils()
            ->getLanguageName( $lang, $this->getContext()->getLanguage()->getCode() );
        if ( $name !== '' ) {
            $display = $this->getContext()->msg( 'img-lang-opt', $lang, $name )->text();
        } else {
            $display = $lang;
        }
        return "\n" .
            Xml::option(
                $display,
                $lang,
                $selected
            );
    }

    /**
     * Get alternative thumbnail sizes.
     *
     * @note This will only list several alternatives if thumbnails are rendered on 404
     * @param int $origWidth Actual width of image
     * @param int $origHeight Actual height of image
     * @return int[][] An array of [width, height] pairs.
     * @phan-return array<int,array{0:int,1:int}>
     */
    protected function getThumbSizes( $origWidth, $origHeight ) {
        $context = $this->getContext();
        $imageLimits = $context->getConfig()->get( MainConfigNames::ImageLimits );
        if ( $this->displayImg->getRepo()->canTransformVia404() ) {
            $thumbSizes = $imageLimits;
            // Also include the full sized resolution in the list, so
            // that users know they can get it. This will link to the
            // original file asset if mustRender() === false. In the case
            // that we mustRender, some users have indicated that they would
            // find it useful to have the full size image in the rendered
            // image format.
            $thumbSizes[] = [ $origWidth, $origHeight ];
        } else {
            # Creating thumb links triggers thumbnail generation.
            # Just generate the thumb for the current users prefs.
            $thumbSizes = [
                $this->getImageLimitsFromOption( $context->getUser(), 'thumbsize' )
            ];
            if ( !$this->displayImg->mustRender() ) {
                // We can safely include a link to the "full-size" preview,
                // without actually rendering.
                $thumbSizes[] = [ $origWidth, $origHeight ];
            }
        }
        return $thumbSizes;
    }

    /**
     * @see WikiFilePage::getFile
     * @return File
     */
    public function getFile(): File {
        return $this->getPage()->getFile();
    }

    /**
     * @see WikiFilePage::isLocal
     * @return bool
     */
    public function isLocal() {
        return $this->getPage()->isLocal();
    }

    /**
     * @see WikiFilePage::getDuplicates
     * @return File[]|null
     */
    public function getDuplicates() {
        return $this->getPage()->getDuplicates();
    }

    /**
     * @see WikiFilePage::getForeignCategories
     * @return TitleArrayFromResult
     */
    public function getForeignCategories() {
        return $this->getPage()->getForeignCategories();
    }

}