Localisation updates from https://translatewiki.net.

[mediawiki.git] / includes / linker / Linker.php

<?php
/**
 * Methods to make links and related items.
 *
 * 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
 */

namespace MediaWiki\Linker;

use File;
use HtmlArmor;
use MediaTransformError;
use MediaTransformOutput;
use MediaWiki\Context\ContextSource;
use MediaWiki\Context\DerivativeContext;
use MediaWiki\Context\IContextSource;
use MediaWiki\Context\RequestContext;
use MediaWiki\HookContainer\HookRunner;
use MediaWiki\Html\Html;
use MediaWiki\Html\HtmlHelper;
use MediaWiki\MainConfigNames;
use MediaWiki\MediaWikiServices;
use MediaWiki\Message\Message;
use MediaWiki\Parser\Parser;
use MediaWiki\Permissions\Authority;
use MediaWiki\Revision\RevisionRecord;
use MediaWiki\SpecialPage\SpecialPage;
use MediaWiki\Title\Title;
use MediaWiki\Title\TitleValue;
use MediaWiki\User\ExternalUserNames;
use MediaWiki\User\UserIdentityValue;
use MediaWiki\Xml\Xml;
use MessageLocalizer;
use Wikimedia\Assert\Assert;
use Wikimedia\IPUtils;
use Wikimedia\Rdbms\SelectQueryBuilder;
use Wikimedia\RemexHtml\Serializer\SerializerNode;

/**
 * Some internal bits split of from Skin.php. These functions are used
 * for primarily page content: links, embedded images, table of contents. Links
 * are also used in the skin.
 *
 * @todo turn this into a legacy interface for HtmlPageLinkRenderer and similar services.
 *
 * @ingroup Skins
 */
class Linker {
        /**
         * Flags for userToolLinks()
         */
        public const TOOL_LINKS_NOBLOCK = 1;
        public const TOOL_LINKS_EMAIL = 2;

        /**
         * This function returns an HTML link to the given target.  It serves a few
         * purposes:
         *   1) If $target is a LinkTarget, the correct URL to link to will be figured
         *      out automatically.
         *   2) It automatically adds the usual classes for various types of link
         *      targets: "new" for red links, "stub" for short articles, etc.
         *   3) It escapes all attribute values safely so there's no risk of XSS.
         *   4) It provides a default tooltip if the target is a LinkTarget (the page
         *      name of the target).
         * link() replaces the old functions in the makeLink() family.
         *
         * @since 1.18 Method exists since 1.16 as non-static, made static in 1.18.
         * @deprecated since 1.28, use MediaWiki\Linker\LinkRenderer instead
         *
         * @param LinkTarget $target Can currently only be a LinkTarget, but this may
         *   change to support Images, literal URLs, etc.
         * @param string|null $html The HTML contents of the <a> element, i.e.,
         *   the link text.  This is raw HTML and will not be escaped.  If null,
         *   defaults to the prefixed text of the LinkTarget; or if the LinkTarget is just a
         *   fragment, the contents of the fragment.
         * @param array $customAttribs A key => value array of extra HTML attributes,
         *   such as title and class.  (href is ignored.)  Classes will be
         *   merged with the default classes, while other attributes will replace
         *   default attributes.  All passed attribute values will be HTML-escaped.
         *   A false attribute value means to suppress that attribute.
         * @param array $query The query string to append to the URL
         *   you're linking to, in key => value array form.  Query keys and values
         *   will be URL-encoded.
         * @param string|array $options String or array of strings:
         *     'known': Page is known to exist, so don't check if it does.
         *     'broken': Page is known not to exist, so don't check if it does.
         *     'noclasses': Don't add any classes automatically (includes "new",
         *       "stub", "mw-redirect", "extiw").  Only use the class attribute
         *       provided, if any, so you get a simple blue link with no icons.
         *     'forcearticlepath': Use the article path always, even with a querystring.
         *       Has compatibility issues on some setups, so avoid wherever possible.
         *     'http': Force a full URL with http:// as the scheme.
         *     'https': Force a full URL with https:// as the scheme.
         * @return string HTML <a> attribute
         */
        public static function link(
                $target, $html = null, $customAttribs = [], $query = [], $options = []
        ) {
                if ( !$target instanceof LinkTarget ) {
                        wfWarn( __METHOD__ . ': Requires $target to be a LinkTarget object.', 2 );
                        return "<!-- ERROR -->$html";
                }

                $services = MediaWikiServices::getInstance();
                $options = (array)$options;
                if ( $options ) {
                        // Custom options, create new LinkRenderer
                        $linkRenderer = $services->getLinkRendererFactory()
                                ->createFromLegacyOptions( $options );
                } else {
                        $linkRenderer = $services->getLinkRenderer();
                }

                if ( $html !== null ) {
                        $text = new HtmlArmor( $html );
                } else {
                        $text = null;
                }

                if ( in_array( 'known', $options, true ) ) {
                        return $linkRenderer->makeKnownLink( $target, $text, $customAttribs, $query );
                }

                if ( in_array( 'broken', $options, true ) ) {
                        return $linkRenderer->makeBrokenLink( $target, $text, $customAttribs, $query );
                }

                if ( in_array( 'noclasses', $options, true ) ) {
                        return $linkRenderer->makePreloadedLink( $target, $text, '', $customAttribs, $query );
                }

                return $linkRenderer->makeLink( $target, $text, $customAttribs, $query );
        }

        /**
         * Identical to link(), except $options defaults to 'known'.
         *
         * @since 1.16.3
         * @deprecated since 1.28, use MediaWiki\Linker\LinkRenderer instead
         * @see Linker::link
         * @param LinkTarget $target
         * @param-taint $target none
         * @param string|null $html
         * @param-taint $html exec_html
         * @param array $customAttribs
         * @param-taint $customAttribs none
         * @param array $query
         * @param-taint $query none
         * @param string|array $options
         * @param-taint $options none
         * @return string
         * @return-taint escaped
         */
        public static function linkKnown(
                $target, $html = null, $customAttribs = [],
                $query = [], $options = [ 'known' ]
        ) {
                return self::link( $target, $html, $customAttribs, $query, $options );
        }

        /**
         * Make appropriate markup for a link to the current article. This is since
         * MediaWiki 1.29.0 rendered as an <a> tag without an href and with a class
         * showing the link text. The calling sequence is the same as for the other
         * make*LinkObj static functions, but $query is not used.
         *
         * @since 1.16.3
         * @param LinkTarget $nt
         * @param string $html
         * @param string $query
         * @param string $trail
         * @param string $prefix
         * @param string $hash hash fragment since 1.40. Should be properly escaped using
         *   Sanitizer::escapeIdForLink before being passed to this function.
         *
         * @return string
         */
        public static function makeSelfLinkObj( $nt, $html = '', $query = '', $trail = '', $prefix = '', $hash = '' ) {
                $nt = Title::newFromLinkTarget( $nt );
                $attrs = [];
                if ( $hash ) {
                        $attrs['class'] = 'mw-selflink-fragment';
                        $attrs['href'] = '#' . $hash;
                } else {
                        // For backwards compatibility with gadgets we add selflink as well.
                        $attrs['class'] = 'mw-selflink selflink';
                }
                $ret = Html::rawElement( 'a', $attrs, $prefix . $html ) . $trail;
                $hookRunner = new HookRunner( MediaWikiServices::getInstance()->getHookContainer() );
                if ( !$hookRunner->onSelfLinkBegin( $nt, $html, $trail, $prefix, $ret ) ) {
                        return $ret;
                }

                if ( $html == '' ) {
                        $html = htmlspecialchars( $nt->getPrefixedText() );
                }
                [ $inside, $trail ] = self::splitTrail( $trail );
                return Html::rawElement( 'a', $attrs, $prefix . $html . $inside ) . $trail;
        }

        /**
         * Get a message saying that an invalid title was encountered.
         * This should be called after a method like Title::makeTitleSafe() returned
         * a value indicating that the title object is invalid.
         *
         * @param IContextSource $context Context to use to get the messages
         * @param int $namespace Namespace number
         * @param string $title Text of the title, without the namespace part
         * @return string
         */
        public static function getInvalidTitleDescription( IContextSource $context, $namespace, $title ) {
                // First we check whether the namespace exists or not.
                if ( MediaWikiServices::getInstance()->getNamespaceInfo()->exists( $namespace ) ) {
                        if ( $namespace == NS_MAIN ) {
                                $name = $context->msg( 'blanknamespace' )->text();
                        } else {
                                $name = MediaWikiServices::getInstance()->getContentLanguage()->
                                        getFormattedNsText( $namespace );
                        }
                        return $context->msg( 'invalidtitle-knownnamespace', $namespace, $name, $title )->text();
                }

                return $context->msg( 'invalidtitle-unknownnamespace', $namespace, $title )->text();
        }

        /**
         * Returns the filename part of an url.
         * Used as alternative text for external images.
         *
         * @param string $url
         *
         * @return string
         */
        private static function fnamePart( $url ) {
                $basename = strrchr( $url, '/' );
                if ( $basename === false ) {
                        $basename = $url;
                } else {
                        $basename = substr( $basename, 1 );
                }
                return $basename;
        }

        /**
         * Return the code for images which were added via external links,
         * via Parser::maybeMakeExternalImage().
         *
         * @since 1.16.3
         * @param string $url
         * @param string $alt
         *
         * @return string
         */
        public static function makeExternalImage( $url, $alt = '' ) {
                if ( $alt == '' ) {
                        $alt = self::fnamePart( $url );
                }
                $img = '';
                $success = ( new HookRunner( MediaWikiServices::getInstance()->getHookContainer() ) )
                        ->onLinkerMakeExternalImage( $url, $alt, $img );
                if ( !$success ) {
                        wfDebug( "Hook LinkerMakeExternalImage changed the output of external image "
                                . "with url {$url} and alt text {$alt} to {$img}" );
                        return $img;
                }
                return Html::element( 'img',
                        [
                                'src' => $url,
                                'alt' => $alt
                        ]
                );
        }

        /**
         * Given parameters derived from [[Image:Foo|options...]], generate the
         * HTML that that syntax inserts in the page.
         *
         * @param Parser $parser
         * @param LinkTarget $title LinkTarget object of the file (not the currently viewed page)
         * @param File|false $file File object, or false if it doesn't exist
         * @param array $frameParams Associative array of parameters external to the media handler.
         *     Boolean parameters are indicated by presence or absence, the value is arbitrary and
         *     will often be false.
         *          thumbnail       If present, downscale and frame
         *          manualthumb     Image name to use as a thumbnail, instead of automatic scaling
         *          framed          Shows image in original size in a frame
         *          frameless       Downscale but don't frame
         *          upright         If present, tweak default sizes for portrait orientation
         *          upright_factor  Fudge factor for "upright" tweak (default 0.75)
         *          border          If present, show a border around the image
         *          align           Horizontal alignment (left, right, center, none)
         *          valign          Vertical alignment (baseline, sub, super, top, text-top, middle,
         *                          bottom, text-bottom)
         *          alt             Alternate text for image (i.e. alt attribute). Plain text.
         *          title           Used for tooltips if caption isn't visible.
         *          class           HTML for image classes. Plain text.
         *          caption         HTML for image caption.
         *          link-url        URL to link to
         *          link-title      LinkTarget object to link to
         *          link-target     Value for the target attribute, only with link-url
         *          no-link         Boolean, suppress description link
         *
         * @param array $handlerParams Associative array of media handler parameters, to be passed
         *       to transform(). Typical keys are "width" and "page".
         *          targetlang      (optional) Target language code, see Parser::getTargetLanguage()
         * @param string|false $time Timestamp of the file, set as false for current
         * @param string $query Query params for desc url
         * @param int|null $widthOption Used by the parser to remember the user preference thumbnailsize
         * @since 1.20
         * @return string HTML for an image, with links, wrappers, etc.
         */
        public static function makeImageLink( Parser $parser, LinkTarget $title,
                $file, $frameParams = [], $handlerParams = [], $time = false,
                $query = '', $widthOption = null
        ) {
                $title = Title::newFromLinkTarget( $title );
                $res = null;
                $hookRunner = new HookRunner( MediaWikiServices::getInstance()->getHookContainer() );
                if ( !$hookRunner->onImageBeforeProduceHTML( null, $title,
                        // @phan-suppress-next-line PhanTypeMismatchArgument Type mismatch on pass-by-ref args
                        $file, $frameParams, $handlerParams, $time, $res,
                        // @phan-suppress-next-line PhanTypeMismatchArgument Type mismatch on pass-by-ref args
                        $parser, $query, $widthOption )
                ) {
                        return $res;
                }

                if ( $file && !$file->allowInlineDisplay() ) {
                        wfDebug( __METHOD__ . ': ' . $title->getPrefixedDBkey() . ' does not allow inline display' );
                        return self::link( $title );
                }

                // Clean up parameters
                $page = $handlerParams['page'] ?? false;
                if ( !isset( $frameParams['align'] ) ) {
                        $frameParams['align'] = '';
                }
                if ( !isset( $frameParams['title'] ) ) {
                        $frameParams['title'] = '';
                }
                if ( !isset( $frameParams['class'] ) ) {
                        $frameParams['class'] = '';
                }

                $services = MediaWikiServices::getInstance();
                $config = $services->getMainConfig();
                $enableLegacyMediaDOM = $config->get( MainConfigNames::ParserEnableLegacyMediaDOM );

                $classes = [];
                if (
                        !isset( $handlerParams['width'] ) &&
                        !isset( $frameParams['manualthumb'] ) &&
                        !isset( $frameParams['framed'] )
                ) {
                        $classes[] = 'mw-default-size';
                }

                $prefix = $postfix = '';

                if ( $enableLegacyMediaDOM ) {
                        if ( $frameParams['align'] == 'center' ) {
                                $prefix = '<div class="center">';
                                $postfix = '</div>';
                                $frameParams['align'] = 'none';
                        }
                }

                if ( $file && !isset( $handlerParams['width'] ) ) {
                        if ( isset( $handlerParams['height'] ) && $file->isVectorized() ) {
                                // If its a vector image, and user only specifies height
                                // we don't want it to be limited by its "normal" width.
                                $svgMaxSize = $config->get( MainConfigNames::SVGMaxSize );
                                $handlerParams['width'] = $svgMaxSize;
                        } else {
                                $handlerParams['width'] = $file->getWidth( $page );
                        }

                        if ( isset( $frameParams['thumbnail'] )
                                || isset( $frameParams['manualthumb'] )
                                || isset( $frameParams['framed'] )
                                || isset( $frameParams['frameless'] )
                                || !$handlerParams['width']
                        ) {
                                $thumbLimits = $config->get( MainConfigNames::ThumbLimits );
                                $thumbUpright = $config->get( MainConfigNames::ThumbUpright );
                                if ( $widthOption === null || !isset( $thumbLimits[$widthOption] ) ) {
                                        $userOptionsLookup = $services->getUserOptionsLookup();
                                        $widthOption = $userOptionsLookup->getDefaultOption( 'thumbsize' );
                                }

                                // Reduce width for upright images when parameter 'upright' is used
                                if ( isset( $frameParams['upright'] ) && $frameParams['upright'] == 0 ) {
                                        $frameParams['upright'] = $thumbUpright;
                                }

                                // For caching health: If width scaled down due to upright
                                // parameter, round to full __0 pixel to avoid the creation of a
                                // lot of odd thumbs.
                                $prefWidth = isset( $frameParams['upright'] ) ?
                                        round( $thumbLimits[$widthOption] * $frameParams['upright'], -1 ) :
                                        $thumbLimits[$widthOption];

                                // Use width which is smaller: real image width or user preference width
                                // Unless image is scalable vector.
                                if ( !isset( $handlerParams['height'] ) && ( $handlerParams['width'] <= 0 ||
                                                $prefWidth < $handlerParams['width'] || $file->isVectorized() ) ) {
                                        $handlerParams['width'] = $prefWidth;
                                }
                        }
                }

                // Parser::makeImage has a similarly named variable
                $hasVisibleCaption = isset( $frameParams['thumbnail'] ) ||
                        isset( $frameParams['manualthumb'] ) ||
                        isset( $frameParams['framed'] );

                if ( $hasVisibleCaption ) {
                        if ( $enableLegacyMediaDOM ) {
                                // This is no longer needed in our new media output, since the
                                // default styling in content.media-common.less takes care of it;
                                // see T269704.

                                # Create a thumbnail. Alignment depends on the writing direction of
                                # the page content language (right-aligned for LTR languages,
                                # left-aligned for RTL languages)
                                # If a thumbnail width has not been provided, it is set
                                # to the default user option as specified in Language*.php
                                if ( $frameParams['align'] == '' ) {
                                        $frameParams['align'] = $parser->getTargetLanguage()->alignEnd();
                                }
                        }
                        return $prefix . self::makeThumbLink2(
                                $title, $file, $frameParams, $handlerParams, $time, $query,
                                $classes, $parser
                        ) . $postfix;
                }

                $rdfaType = 'mw:File';

                if ( isset( $frameParams['frameless'] ) ) {
                        $rdfaType .= '/Frameless';
                        if ( $file ) {
                                $srcWidth = $file->getWidth( $page );
                                # For "frameless" option: do not present an image bigger than the
                                # source (for bitmap-style images). This is the same behavior as the
                                # "thumb" option does it already.
                                if ( $srcWidth && !$file->mustRender() && $handlerParams['width'] > $srcWidth ) {
                                        $handlerParams['width'] = $srcWidth;
                                }
                        }
                }

                if ( $file && isset( $handlerParams['width'] ) ) {
                        # Create a resized image, without the additional thumbnail features
                        $thumb = $file->transform( $handlerParams );
                } else {
                        $thumb = false;
                }

                $isBadFile = $file && $thumb &&
                        $parser->getBadFileLookup()->isBadFile( $title->getDBkey(), $parser->getTitle() );

                if ( !$thumb || ( !$enableLegacyMediaDOM && $thumb->isError() ) || $isBadFile ) {
                        $rdfaType = 'mw:Error ' . $rdfaType;
                        $currentExists = $file && $file->exists();
                        if ( $enableLegacyMediaDOM ) {
                                $label = $frameParams['title'];
                        } else {
                                if ( $currentExists && !$thumb ) {
                                        $label = wfMessage( 'thumbnail_error', '' )->text();
                                } elseif ( $thumb && $thumb->isError() ) {
                                        Assert::invariant(
                                                $thumb instanceof MediaTransformError,
                                                'Unknown MediaTransformOutput: ' . get_class( $thumb )
                                        );
                                        $label = $thumb->toText();
                                } else {
                                        $label = $frameParams['alt'] ?? '';
                                }
                        }
                        $s = self::makeBrokenImageLinkObj(
                                $title, $label, '', '', '', (bool)$time, $handlerParams, $currentExists
                        );
                } else {
                        self::processResponsiveImages( $file, $thumb, $handlerParams );
                        $params = [];
                        // An empty alt indicates an image is not a key part of the content
                        // and that non-visual browsers may omit it from rendering.  Only
                        // set the parameter if it's explicitly requested.
                        if ( isset( $frameParams['alt'] ) ) {
                                $params['alt'] = $frameParams['alt'];
                        }
                        $params['title'] = $frameParams['title'];
                        if ( $enableLegacyMediaDOM ) {
                                $params += [
                                        'valign' => $frameParams['valign'] ?? false,
                                        'img-class' => $frameParams['class'],
                                ];
                                if ( isset( $frameParams['border'] ) ) {
                                        $params['img-class'] .= ( $params['img-class'] !== '' ? ' ' : '' ) . 'thumbborder';
                                }
                        } else {
                                $params += [
                                        'img-class' => 'mw-file-element',
                                ];
                        }
                        $params = self::getImageLinkMTOParams( $frameParams, $query, $parser ) + $params;
                        $s = $thumb->toHtml( $params );
                }

                if ( $enableLegacyMediaDOM ) {
                        if ( $frameParams['align'] != '' ) {
                                $s = Html::rawElement(
                                        'div',
                                        [ 'class' => 'float' . $frameParams['align'] ],
                                        $s
                                );
                        }
                        return str_replace( "\n", ' ', $prefix . $s . $postfix );
                }

                $wrapper = 'span';
                $caption = '';

                if ( $frameParams['align'] != '' ) {
                        $wrapper = 'figure';
                        // Possible values: mw-halign-left mw-halign-center mw-halign-right mw-halign-none
                        $classes[] = "mw-halign-{$frameParams['align']}";
                        $caption = Html::rawElement(
                                'figcaption', [], $frameParams['caption'] ?? ''
                        );
                } elseif ( isset( $frameParams['valign'] ) ) {
                        // Possible values: mw-valign-middle mw-valign-baseline mw-valign-sub
                        // mw-valign-super mw-valign-top mw-valign-text-top mw-valign-bottom
                        // mw-valign-text-bottom
                        $classes[] = "mw-valign-{$frameParams['valign']}";
                }

                if ( isset( $frameParams['border'] ) ) {
                        $classes[] = 'mw-image-border';
                }

                if ( isset( $frameParams['class'] ) ) {
                        $classes[] = $frameParams['class'];
                }

                $attribs = [
                        'class' => $classes,
                        'typeof' => $rdfaType,
                ];

                $s = Html::rawElement( $wrapper, $attribs, $s . $caption );

                return str_replace( "\n", ' ', $s );
        }

        /**
         * Get the link parameters for MediaTransformOutput::toHtml() from given
         * frame parameters supplied by the Parser.
         * @param array $frameParams The frame parameters
         * @param string $query An optional query string to add to description page links
         * @param Parser|null $parser
         * @return array
         */
        public static function getImageLinkMTOParams( $frameParams, $query = '', $parser = null ) {
                $mtoParams = [];
                if ( isset( $frameParams['link-url'] ) && $frameParams['link-url'] !== '' ) {
                        $mtoParams['custom-url-link'] = $frameParams['link-url'];
                        if ( isset( $frameParams['link-target'] ) ) {
                                $mtoParams['custom-target-link'] = $frameParams['link-target'];
                        }
                        if ( $parser ) {
                                $extLinkAttrs = $parser->getExternalLinkAttribs( $frameParams['link-url'] );
                                foreach ( $extLinkAttrs as $name => $val ) {
                                        // Currently could include 'rel' and 'target'
                                        $mtoParams['parser-extlink-' . $name] = $val;
                                }
                        }
                } elseif ( isset( $frameParams['link-title'] ) && $frameParams['link-title'] !== '' ) {
                        $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
                        $mtoParams['custom-title-link'] = Title::newFromLinkTarget(
                                $linkRenderer->normalizeTarget( $frameParams['link-title'] )
                        );
                        if ( isset( $frameParams['link-title-query'] ) ) {
                                $mtoParams['custom-title-link-query'] = $frameParams['link-title-query'];
                        }
                } elseif ( !empty( $frameParams['no-link'] ) ) {
                        // No link
                } else {
                        $mtoParams['desc-link'] = true;
                        $mtoParams['desc-query'] = $query;
                }
                return $mtoParams;
        }

        /**
         * Make HTML for a thumbnail including image, border and caption
         * @param LinkTarget $title
         * @param File|false $file File object or false if it doesn't exist
         * @param string $label
         * @param string $alt
         * @param string|null $align
         * @param array $params
         * @param bool $framed
         * @param string $manualthumb
         * @return string
         */
        public static function makeThumbLinkObj(
                LinkTarget $title, $file, $label = '', $alt = '', $align = null,
                $params = [], $framed = false, $manualthumb = ''
        ) {
                $frameParams = [
                        'alt' => $alt,
                        'caption' => $label,
                        'align' => $align
                ];
                $classes = [];
                if ( $manualthumb ) {
                        $frameParams['manualthumb'] = $manualthumb;
                } elseif ( $framed ) {
                        $frameParams['framed'] = true;
                } elseif ( !isset( $params['width'] ) ) {
                        $classes[] = 'mw-default-size';
                }
                return self::makeThumbLink2(
                        $title, $file, $frameParams, $params, false, '', $classes
                );
        }

        /**
         * @param LinkTarget $title
         * @param File|false $file
         * @param array $frameParams
         * @param array $handlerParams
         * @param bool $time If a file of a certain timestamp was requested
         * @param string $query
         * @param string[] $classes @since 1.36
         * @param Parser|null $parser @since 1.38
         * @return string
         */
        public static function makeThumbLink2(
                LinkTarget $title, $file, $frameParams = [], $handlerParams = [],
                $time = false, $query = '', array $classes = [], ?Parser $parser = null
        ) {
                $exists = $file && $file->exists();

                $services = MediaWikiServices::getInstance();
                $enableLegacyMediaDOM = $services->getMainConfig()->get( MainConfigNames::ParserEnableLegacyMediaDOM );

                $page = $handlerParams['page'] ?? false;
                $lang = $handlerParams['lang'] ?? false;

                if ( !isset( $frameParams['align'] ) ) {
                        $frameParams['align'] = '';
                        if ( $enableLegacyMediaDOM ) {
                                $frameParams['align'] = 'right';
                        }
                }
                if ( !isset( $frameParams['caption'] ) ) {
                        $frameParams['caption'] = '';
                }

                if ( empty( $handlerParams['width'] ) ) {
                        // Reduce width for upright images when parameter 'upright' is used
                        $handlerParams['width'] = isset( $frameParams['upright'] ) ? 130 : 180;
                }

                $thumb = false;
                $noscale = false;
                $manualthumb = false;
                $manual_title = '';
                $rdfaType = 'mw:File/Thumb';

                if ( !$exists ) {
                        // Same precedence as the $exists case
                        if ( !isset( $frameParams['manualthumb'] ) && isset( $frameParams['framed'] ) ) {
                                $rdfaType = 'mw:File/Frame';
                        }
                        $outerWidth = $handlerParams['width'] + 2;
                } else {
                        if ( isset( $frameParams['manualthumb'] ) ) {
                                # Use manually specified thumbnail
                                $manual_title = Title::makeTitleSafe( NS_FILE, $frameParams['manualthumb'] );
                                if ( $manual_title ) {
                                        $manual_img = $services->getRepoGroup()
                                                ->findFile( $manual_title );
                                        if ( $manual_img ) {
                                                $thumb = $manual_img->getUnscaledThumb( $handlerParams );
                                                $manualthumb = true;
                                        }
                                }
                        } else {
                                $srcWidth = $file->getWidth( $page );
                                if ( isset( $frameParams['framed'] ) ) {
                                        $rdfaType = 'mw:File/Frame';
                                        if ( !$file->isVectorized() ) {
                                                // Use image dimensions, don't scale
                                                $noscale = true;
                                        } else {
                                                // framed is unscaled, but for vectorized images
                                                // we need to a width for scaling up for the high density variants
                                                $handlerParams['width'] = $srcWidth;
                                        }
                                }

                                // Do not present an image bigger than the source, for bitmap-style images
                                // This is a hack to maintain compatibility with arbitrary pre-1.10 behavior
                                if ( $srcWidth && !$file->mustRender() && $handlerParams['width'] > $srcWidth ) {
                                        $handlerParams['width'] = $srcWidth;
                                }

                                $thumb = $noscale
                                        ? $file->getUnscaledThumb( $handlerParams )
                                        : $file->transform( $handlerParams );
                        }

                        if ( $thumb ) {
                                $outerWidth = $thumb->getWidth() + 2;
                        } else {
                                $outerWidth = $handlerParams['width'] + 2;
                        }
                }

                if ( !$enableLegacyMediaDOM && $parser && $rdfaType === 'mw:File/Thumb' ) {
                        $parser->getOutput()->addModules( [ 'mediawiki.page.media' ] );
                }

                $url = Title::newFromLinkTarget( $title )->getLocalURL( $query );
                $linkTitleQuery = [];
                if ( $page || $lang ) {
                        if ( $page ) {
                                $linkTitleQuery['page'] = $page;
                        }
                        if ( $lang ) {
                                $linkTitleQuery['lang'] = $lang;
                        }
                        # ThumbnailImage::toHtml() already adds page= onto the end of DjVu URLs
                        # So we don't need to pass it here in $query. However, the URL for the
                        # zoom icon still needs it, so we make a unique query for it. See T16771
                        $url = wfAppendQuery( $url, $linkTitleQuery );
                }

                if ( $manualthumb
                        && !isset( $frameParams['link-title'] )
                        && !isset( $frameParams['link-url'] )
                        && !isset( $frameParams['no-link'] ) ) {
                        $frameParams['link-title'] = $title;
                        $frameParams['link-title-query'] = $linkTitleQuery;
                }

                if ( $frameParams['align'] != '' ) {
                        // Possible values: mw-halign-left mw-halign-center mw-halign-right mw-halign-none
                        $classes[] = "mw-halign-{$frameParams['align']}";
                }

                if ( isset( $frameParams['class'] ) ) {
                        $classes[] = $frameParams['class'];
                }

                $s = '';

                if ( $enableLegacyMediaDOM ) {
                        $s .= "<div class=\"thumb t{$frameParams['align']}\">"
                                . "<div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
                }

                $isBadFile = $exists && $thumb && $parser &&
                        $parser->getBadFileLookup()->isBadFile(
                                $manualthumb ? $manual_title : $title->getDBkey(),
                                $parser->getTitle()
                        );

                if ( !$exists ) {
                        $rdfaType = 'mw:Error ' . $rdfaType;
                        $label = '';
                        if ( !$enableLegacyMediaDOM ) {
                                $label = $frameParams['alt'] ?? '';
                        }
                        $s .= self::makeBrokenImageLinkObj(
                                $title, $label, '', '', '', (bool)$time, $handlerParams, false
                        );
                        $zoomIcon = '';
                } elseif ( !$thumb || ( !$enableLegacyMediaDOM && $thumb->isError() ) || $isBadFile ) {
                        $rdfaType = 'mw:Error ' . $rdfaType;
                        if ( $enableLegacyMediaDOM ) {
                                if ( !$thumb ) {
                                        $s .= wfMessage( 'thumbnail_error', '' )->escaped();
                                } else {
                                        $s .= self::makeBrokenImageLinkObj(
                                                $title, '', '', '', '', (bool)$time, $handlerParams, true
                                        );
                                }
                        } else {
                                if ( $thumb && $thumb->isError() ) {
                                        Assert::invariant(
                                                $thumb instanceof MediaTransformError,
                                                'Unknown MediaTransformOutput: ' . get_class( $thumb )
                                        );
                                        $label = $thumb->toText();
                                } elseif ( !$thumb ) {
                                        $label = wfMessage( 'thumbnail_error', '' )->text();
                                } else {
                                        $label = '';
                                }
                                $s .= self::makeBrokenImageLinkObj(
                                        $title, $label, '', '', '', (bool)$time, $handlerParams, true
                                );
                        }
                        $zoomIcon = '';
                } else {
                        if ( !$noscale && !$manualthumb ) {
                                self::processResponsiveImages( $file, $thumb, $handlerParams );
                        }
                        $params = [];
                        // An empty alt indicates an image is not a key part of the content
                        // and that non-visual browsers may omit it from rendering.  Only
                        // set the parameter if it's explicitly requested.
                        if ( isset( $frameParams['alt'] ) ) {
                                $params['alt'] = $frameParams['alt'];
                        }
                        if ( $enableLegacyMediaDOM ) {
                                $params += [
                                        'img-class' => ( isset( $frameParams['class'] ) && $frameParams['class'] !== ''
                                                ? $frameParams['class'] . ' '
                                                : '' ) . 'thumbimage'
                                ];
                        } else {
                                $params += [
                                        'img-class' => 'mw-file-element',
                                ];
                                // Only thumbs gets the magnify link
                                if ( $rdfaType === 'mw:File/Thumb' ) {
                                        $params['magnify-resource'] = $url;
                                }
                        }
                        $params = self::getImageLinkMTOParams( $frameParams, $query, $parser ) + $params;
                        $s .= $thumb->toHtml( $params );
                        if ( isset( $frameParams['framed'] ) ) {
                                $zoomIcon = '';
                        } else {
                                $zoomIcon = Html::rawElement( 'div', [ 'class' => 'magnify' ],
                                        Html::rawElement( 'a', [
                                                'href' => $url,
                                                'class' => 'internal',
                                                'title' => wfMessage( 'thumbnail-more' )->text(),
                                        ] )
                                );
                        }
                }

                if ( $enableLegacyMediaDOM ) {
                        $s .= '  <div class="thumbcaption">' . $zoomIcon . $frameParams['caption'] . '</div></div></div>';
                        return str_replace( "\n", ' ', $s );
                }

                $s .= Html::rawElement(
                        'figcaption', [], $frameParams['caption'] ?? ''
                );

                $attribs = [
                        'class' => $classes,
                        'typeof' => $rdfaType,
                ];

                $s = Html::rawElement( 'figure', $attribs, $s );

                return str_replace( "\n", ' ', $s );
        }

        /**
         * Process responsive images: add 1.5x and 2x subimages to the thumbnail, where
         * applicable.
         *
         * @param File $file
         * @param MediaTransformOutput|null $thumb
         * @param array $hp Image parameters
         */
        public static function processResponsiveImages( $file, $thumb, $hp ) {
                $responsiveImages = MediaWikiServices::getInstance()->getMainConfig()->get( MainConfigNames::ResponsiveImages );
                if ( $responsiveImages && $thumb && !$thumb->isError() ) {
                        $hp15 = $hp;
                        $hp15['width'] = round( $hp['width'] * 1.5 );
                        $hp20 = $hp;
                        $hp20['width'] = $hp['width'] * 2;
                        if ( isset( $hp['height'] ) ) {
                                $hp15['height'] = round( $hp['height'] * 1.5 );
                                $hp20['height'] = $hp['height'] * 2;
                        }

                        $thumb15 = $file->transform( $hp15 );
                        $thumb20 = $file->transform( $hp20 );
                        if ( $thumb15 && !$thumb15->isError() && $thumb15->getUrl() !== $thumb->getUrl() ) {
                                $thumb->responsiveUrls['1.5'] = $thumb15->getUrl();
                        }
                        if ( $thumb20 && !$thumb20->isError() && $thumb20->getUrl() !== $thumb->getUrl() ) {
                                $thumb->responsiveUrls['2'] = $thumb20->getUrl();
                        }
                }
        }

        /**
         * Make a "broken" link to an image
         *
         * @since 1.16.3
         * @param LinkTarget $title
         * @param string $label Link label (plain text)
         * @param string $query Query string
         * @param string $unused1 Unused parameter kept for b/c
         * @param string $unused2 Unused parameter kept for b/c
         * @param bool $time A file of a certain timestamp was requested
         * @param array $handlerParams @since 1.36
         * @param bool $currentExists @since 1.41
         * @return string
         */
        public static function makeBrokenImageLinkObj(
                $title, $label = '', $query = '', $unused1 = '', $unused2 = '',
                $time = false, array $handlerParams = [], bool $currentExists = false
        ) {
                if ( !$title instanceof LinkTarget ) {
                        wfWarn( __METHOD__ . ': Requires $title to be a LinkTarget object.' );
                        return "<!-- ERROR -->" . htmlspecialchars( $label );
                }

                $title = Title::newFromLinkTarget( $title );
                $services = MediaWikiServices::getInstance();
                $mainConfig = $services->getMainConfig();
                $enableUploads = $mainConfig->get( MainConfigNames::EnableUploads );
                $uploadMissingFileUrl = $mainConfig->get( MainConfigNames::UploadMissingFileUrl );
                $uploadNavigationUrl = $mainConfig->get( MainConfigNames::UploadNavigationUrl );
                if ( $label == '' ) {
                        $label = $title->getPrefixedText();
                }

                $html = Html::element( 'span', [
                        'class' => 'mw-file-element mw-broken-media',
                        // These data attributes are used to dynamically size the span, see T273013
                        'data-width' => $handlerParams['width'] ?? null,
                        'data-height' => $handlerParams['height'] ?? null,
                ], $label );

                if ( $mainConfig->get( MainConfigNames::ParserEnableLegacyMediaDOM ) ) {
                        $html = htmlspecialchars( $label, ENT_COMPAT );
                }

                $repoGroup = $services->getRepoGroup();
                $currentExists = $currentExists ||
                        ( $time && $repoGroup->findFile( $title ) !== false );

                if ( ( $uploadMissingFileUrl || $uploadNavigationUrl || $enableUploads )
                        && !$currentExists
                ) {
                        if (
                                $title->inNamespace( NS_FILE ) &&
                                $repoGroup->getLocalRepo()->checkRedirect( $title )
                        ) {
                                // We already know it's a redirect, so mark it accordingly
                                return self::link(
                                        $title,
                                        $html,
                                        [ 'class' => 'mw-redirect' ],
                                        wfCgiToArray( $query ),
                                        [ 'known', 'noclasses' ]
                                );
                        }
                        return Html::rawElement( 'a', [
                                        'href' => self::getUploadUrl( $title, $query ),
                                        'class' => 'new',
                                        'title' => $title->getPrefixedText()
                                ], $html );
                }
                return self::link(
                        $title,
                        $html,
                        [],
                        wfCgiToArray( $query ),
                        [ 'known', 'noclasses' ]
                );
        }

        /**
         * Get the URL to upload a certain file
         *
         * @since 1.16.3
         * @param LinkTarget $destFile LinkTarget object of the file to upload
         * @param string $query Urlencoded query string to prepend
         * @return string Urlencoded URL
         */
        public static function getUploadUrl( $destFile, $query = '' ) {
                $mainConfig = MediaWikiServices::getInstance()->getMainConfig();
                $uploadMissingFileUrl = $mainConfig->get( MainConfigNames::UploadMissingFileUrl );
                $uploadNavigationUrl = $mainConfig->get( MainConfigNames::UploadNavigationUrl );
                $q = 'wpDestFile=' . Title::newFromLinkTarget( $destFile )->getPartialURL();
                if ( $query != '' ) {
                        $q .= '&' . $query;
                }

                if ( $uploadMissingFileUrl ) {
                        return wfAppendQuery( $uploadMissingFileUrl, $q );
                }

                if ( $uploadNavigationUrl ) {
                        return wfAppendQuery( $uploadNavigationUrl, $q );
                }

                $upload = SpecialPage::getTitleFor( 'Upload' );

                return $upload->getLocalURL( $q );
        }

        /**
         * Create a direct link to a given uploaded file.
         *
         * @since 1.16.3
         * @param LinkTarget $title
         * @param string $html Pre-sanitized HTML
         * @param string|false $time MW timestamp of file creation time
         * @return string HTML
         */
        public static function makeMediaLinkObj( $title, $html = '', $time = false ) {
                $img = MediaWikiServices::getInstance()->getRepoGroup()->findFile(
                        $title, [ 'time' => $time ]
                );
                return self::makeMediaLinkFile( $title, $img, $html );
        }

        /**
         * Create a direct link to a given uploaded file.
         * This will make a broken link if $file is false.
         *
         * @since 1.16.3
         * @param LinkTarget $title
         * @param File|false $file File object or false
         * @param string $html Pre-sanitized HTML
         * @return string HTML
         *
         * @todo Handle invalid or missing images better.
         */
        public static function makeMediaLinkFile( LinkTarget $title, $file, $html = '' ) {
                if ( $file && $file->exists() ) {
                        $url = $file->getUrl();
                        $class = 'internal';
                } else {
                        $url = self::getUploadUrl( $title );
                        $class = 'new';
                }

                $alt = $title->getText();
                if ( $html == '' ) {
                        $html = $alt;
                }

                $ret = '';
                $attribs = [
                        'href' => $url,
                        'class' => $class,
                        'title' => $alt
                ];

                if ( !( new HookRunner( MediaWikiServices::getInstance()->getHookContainer() ) )->onLinkerMakeMediaLinkFile(
                        Title::newFromLinkTarget( $title ), $file, $html, $attribs, $ret )
                ) {
                        wfDebug( "Hook LinkerMakeMediaLinkFile changed the output of link "
                                . "with url {$url} and text {$html} to {$ret}" );
                        return $ret;
                }

                return Html::rawElement( 'a', $attribs, $html );
        }

        /**
         * Make a link to a special page given its name and, optionally,
         * a message key from the link text.
         * Usage example: Linker::specialLink( 'Recentchanges' )
         *
         * @since 1.16.3
         * @param string $name Special page name, can optionally include …/subpages and …?parameters
         * @param string $key Optional message key if different from $name
         * @return string
         */
        public static function specialLink( $name, $key = '' ) {
                $queryPos = strpos( $name, '?' );
                if ( $queryPos !== false ) {
                        $getParams = wfCgiToArray( substr( $name, $queryPos + 1 ) );
                        $name = substr( $name, 0, $queryPos );
                } else {
                        $getParams = [];
                }

                $slashPos = strpos( $name, '/' );
                if ( $slashPos !== false ) {
                        $subpage = substr( $name, $slashPos + 1 );
                        $name = substr( $name, 0, $slashPos );
                } else {
                        $subpage = false;
                }

                if ( $key == '' ) {
                        $key = strtolower( $name );
                }

                return self::linkKnown(
                        SpecialPage::getTitleFor( $name, $subpage ),
                        wfMessage( $key )->escaped(),
                        [],
                        $getParams
                );
        }

        /**
         * Make an external link
         *
         * @since 1.16.3. $title added in 1.21
         * @param string $url URL to link to
         * @param-taint $url escapes_html
         * @param string $text Text of link
         * @param-taint $text none
         * @param bool $escape Do we escape the link text?
         * @param-taint $escape none
         * @param string $linktype Type of external link. Gets added to the classes
         * @param-taint $linktype escapes_html
         * @param array $attribs Array of extra attributes to <a>
         * @param-taint $attribs escapes_html
         * @param LinkTarget|null $title LinkTarget object used for title specific link attributes
         * @param-taint $title none
         * @return string
         * @deprecated since 1.43; use LinkRenderer::makeExternalLink(), passing
         *   in an HtmlArmor instance if $escape was false.
         */
        public static function makeExternalLink( $url, $text, $escape = true,
                $linktype = '', $attribs = [], $title = null
        ) {
                // phpcs:ignore MediaWiki.Usage.DeprecatedGlobalVariables.Deprecated$wgTitle
                global $wgTitle;
                $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
                return $linkRenderer->makeExternalLink(
                        $url,
                        $escape ? $text : new HtmlArmor( $text ),
                        $title ?? $wgTitle ?? SpecialPage::getTitleFor( 'Badtitle' ),
                        $linktype,
                        $attribs
                );
        }

        /**
         * Make user link (or user contributions for unregistered users)
         *
         * This method produces HTML that requires CSS styles in mediawiki.interface.helpers.styles.
         *
         * @param int $userId User id in database.
         * @param string $userName User name in database.
         * @param string|false $altUserName Text to display instead of the user name (optional)
         * @param string[] $attributes Extra HTML attributes. See Linker::link.
         * @return string HTML fragment
         * @since 1.16.3. $altUserName was added in 1.19. $attributes was added in 1.40.
         */
        public static function userLink(
                $userId,
                $userName,
                $altUserName = false,
                $attributes = []
        ) {
                if ( $userName === '' || $userName === false || $userName === null ) {
                        wfDebug( __METHOD__ . ' received an empty username. Are there database errors ' .
                                'that need to be fixed?' );
                        return wfMessage( 'empty-username' )->parse();
                }

                $classes = 'mw-userlink';
                if ( MediaWikiServices::getInstance()->getTempUserConfig()->isTempName( $userName ) ) {
                        $classes .= ' mw-tempuserlink';
                        $page = SpecialPage::getTitleValueFor( 'Contributions', $userName );
                } elseif ( $userId == 0 ) {
                        $page = ExternalUserNames::getUserLinkTitle( $userName );

                        if ( ExternalUserNames::isExternal( $userName ) ) {
                                $classes .= ' mw-extuserlink';
                        } elseif ( $altUserName === false ) {
                                $altUserName = IPUtils::prettifyIP( $userName );
                        }
                        $classes .= ' mw-anonuserlink'; // Separate link class for anons (T45179)
                } else {
                        $page = TitleValue::tryNew( NS_USER, strtr( $userName, ' ', '_' ) );
                }

                // Wrap the output with <bdi> tags for directionality isolation
                $linkText =
                        '<bdi>' . htmlspecialchars( $altUserName !== false ? $altUserName : $userName ) . '</bdi>';

                if ( isset( $attributes['class'] ) ) {
                        $attributes['class'] .= ' ' . $classes;
                } else {
                        $attributes['class'] = $classes;
                }

                return $page
                        ? self::link( $page, $linkText, $attributes )
                        : Html::rawElement( 'span', $attributes, $linkText );
        }

        /**
         * Generate standard user tool links (talk, contributions, block link, etc.)
         *
         * @since 1.42
         * @param int $userId User identifier
         * @param string $userText User name or IP address
         * @param bool $redContribsWhenNoEdits Should the contributions link be
         *   red if the user has no edits?
         * @param int $flags Customisation flags (e.g. Linker::TOOL_LINKS_NOBLOCK
         *   and Linker::TOOL_LINKS_EMAIL).
         * @param int|null $edits User edit count. If you enable $redContribsWhenNoEdits,
         *  you may pass a pre-computed edit count here, or 0 if the caller knows that
         *  the account has 0 edits. Otherwise, the value is unused and null may
         *  be passed. If $redContribsWhenNoEdits is enabled and null is passed, the
         *  edit count will be lazily fetched from UserEditTracker.
         * @return string[] Array of HTML fragments, each of them a link tag with a distinctive
         *   class; or a single string on error.
         */
        public static function userToolLinkArray(
                $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0, $edits = null
        ): array {
                $services = MediaWikiServices::getInstance();
                $disableAnonTalk = $services->getMainConfig()->get( MainConfigNames::DisableAnonTalk );
                $talkable = !( $disableAnonTalk && $userId == 0 );
                $blockable = !( $flags & self::TOOL_LINKS_NOBLOCK );
                $addEmailLink = $flags & self::TOOL_LINKS_EMAIL && $userId;

                if ( $userId == 0 && ExternalUserNames::isExternal( $userText ) ) {
                        // No tools for an external user
                        return [];
                }

                $items = [];
                if ( $talkable ) {
                        $items[] = self::userTalkLink( $userId, $userText );
                }
                if ( $userId ) {
                        // check if the user has an edit
                        $attribs = [];
                        $attribs['class'] = 'mw-usertoollinks-contribs';
                        if ( $redContribsWhenNoEdits ) {
                                if ( $edits === null ) {
                                        $user = UserIdentityValue::newRegistered( $userId, $userText );
                                        $edits = $services->getUserEditTracker()->getUserEditCount( $user );
                                }
                                if ( $edits === 0 ) {
                                        // Note: "new" class is inappropriate here, as "new" class
                                        // should only be used for pages that do not exist.
                                        $attribs['class'] .= ' mw-usertoollinks-contribs-no-edits';
                                }
                        }
                        $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );

                        $items[] = self::link( $contribsPage, wfMessage( 'contribslink' )->escaped(), $attribs );
                }
                $userCanBlock = RequestContext::getMain()->getAuthority()->isAllowed( 'block' );
                if ( $blockable && $userCanBlock ) {
                        $items[] = self::blockLink( $userId, $userText );
                }

                if (
                        $addEmailLink
                        && MediaWikiServices::getInstance()->getEmailUserFactory()
                                ->newEmailUser( RequestContext::getMain()->getAuthority() )
                                ->canSend()
                                ->isGood()
                ) {
                        $items[] = self::emailLink( $userId, $userText );
                }

                ( new HookRunner( $services->getHookContainer() ) )->onUserToolLinksEdit( $userId, $userText, $items );

                return $items;
        }

        /**
         * Generate standard tool links HTML from a link array returned by userToolLinkArray().
         * @since 1.42
         * @param array $items
         * @param bool $useParentheses (optional, default true) Wrap comments in parentheses where needed
         * @return string
         */
        public static function renderUserToolLinksArray( array $items, bool $useParentheses ): string {
                global $wgLang;

                if ( !$items ) {
                        return '';
                }

                if ( $useParentheses ) {
                        return wfMessage( 'word-separator' )->escaped()
                                . '<span class="mw-usertoollinks">'
                                . wfMessage( 'parentheses' )->rawParams( $wgLang->pipeList( $items ) )->escaped()
                                . '</span>';
                }

                $tools = [];
                foreach ( $items as $tool ) {
                        $tools[] = Html::rawElement( 'span', [], $tool );
                }
                return ' <span class="mw-usertoollinks mw-changeslist-links">' .
                        implode( ' ', $tools ) . '</span>';
        }

        /**
         * Generate standard user tool links (talk, contributions, block link, etc.)
         *
         * @since 1.16.3
         * @param int $userId User identifier
         * @param string $userText User name or IP address
         * @param bool $redContribsWhenNoEdits Should the contributions link be
         *   red if the user has no edits?
         * @param int $flags Customisation flags (e.g. Linker::TOOL_LINKS_NOBLOCK
         *   and Linker::TOOL_LINKS_EMAIL).
         * @param int|null $edits User edit count (optional, for performance)
         * @param bool $useParentheses (optional, default true) Wrap comments in parentheses where needed
         * @return string HTML fragment
         */
        public static function userToolLinks(
                $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0, $edits = null,
                $useParentheses = true
        ) {
                if ( $userText === '' ) {
                        wfDebug( __METHOD__ . ' received an empty username. Are there database errors ' .
                                'that need to be fixed?' );
                        return ' ' . wfMessage( 'empty-username' )->parse();
                }

                $items = self::userToolLinkArray( $userId, $userText, $redContribsWhenNoEdits, $flags, $edits );
                return self::renderUserToolLinksArray( $items, $useParentheses );
        }

        /**
         * Alias for userToolLinks( $userId, $userText, true );
         * @since 1.16.3
         * @param int $userId User identifier
         * @param string $userText User name or IP address
         * @param int|null $edits User edit count (optional, for performance)
         * @param bool $useParentheses (optional) Wrap comments in parentheses where needed
         * @return string
         */
        public static function userToolLinksRedContribs(
                $userId, $userText, $edits = null, $useParentheses = true
        ) {
                return self::userToolLinks( $userId, $userText, true, 0, $edits, $useParentheses );
        }

        /**
         * @since 1.16.3
         * @param int $userId User id in database.
         * @param string $userText User name in database.
         * @return string HTML fragment with user talk link
         */
        public static function userTalkLink( $userId, $userText ) {
                if ( $userText === '' ) {
                        wfDebug( __METHOD__ . ' received an empty username. Are there database errors ' .
                                'that need to be fixed?' );
                        return wfMessage( 'empty-username' )->parse();
                }

                $userTalkPage = TitleValue::tryNew( NS_USER_TALK, strtr( $userText, ' ', '_' ) );
                $moreLinkAttribs = [ 'class' => 'mw-usertoollinks-talk' ];
                $linkText = wfMessage( 'talkpagelinktext' )->escaped();

                return $userTalkPage
                        ? self::link( $userTalkPage, $linkText, $moreLinkAttribs )
                        : Html::rawElement( 'span', $moreLinkAttribs, $linkText );
        }

        /**
         * @since 1.16.3
         * @param int $userId
         * @param string $userText User name in database.
         * @return string HTML fragment with block link
         */
        public static function blockLink( $userId, $userText ) {
                if ( $userText === '' ) {
                        wfDebug( __METHOD__ . ' received an empty username. Are there database errors ' .
                                'that need to be fixed?' );
                        return wfMessage( 'empty-username' )->parse();
                }

                $blockPage = SpecialPage::getTitleFor( 'Block', $userText );
                $moreLinkAttribs = [ 'class' => 'mw-usertoollinks-block' ];

                return self::link( $blockPage,
                        wfMessage( 'blocklink' )->escaped(),
                        $moreLinkAttribs
                );
        }

        /**
         * @param int $userId
         * @param string $userText User name in database.
         * @return string HTML fragment with e-mail user link
         */
        public static function emailLink( $userId, $userText ) {
                if ( $userText === '' ) {
                        wfLogWarning( __METHOD__ . ' received an empty username. Are there database errors ' .
                                'that need to be fixed?' );
                        return wfMessage( 'empty-username' )->parse();
                }

                $emailPage = SpecialPage::getTitleFor( 'Emailuser', $userText );
                $moreLinkAttribs = [ 'class' => 'mw-usertoollinks-mail' ];
                return self::link( $emailPage,
                        wfMessage( 'emaillink' )->escaped(),
                        $moreLinkAttribs
                );
        }

        /**
         * Generate a user link if the current user is allowed to view it
         *
         * This method produces HTML that requires CSS styles in mediawiki.interface.helpers.styles.
         *
         * @since 1.16.3
         * @param RevisionRecord $revRecord (Switched from the old Revision class to RevisionRecord
         *    since 1.35)
         * @param bool $isPublic Show only if all users can see it
         * @return string HTML fragment
         */
        public static function revUserLink( RevisionRecord $revRecord, $isPublic = false ) {
                // TODO inject authority
                $authority = RequestContext::getMain()->getAuthority();

                $revUser = $revRecord->getUser(
                        $isPublic ? RevisionRecord::FOR_PUBLIC : RevisionRecord::FOR_THIS_USER,
                        $authority
                );
                if ( $revUser ) {
                        $link = self::userLink( $revUser->getId(), $revUser->getName() );
                } else {
                        // User is deleted and we can't (or don't want to) view it
                        $link = wfMessage( 'rev-deleted-user' )->escaped();
                }

                if ( $revRecord->isDeleted( RevisionRecord::DELETED_USER ) ) {
                        $class = self::getRevisionDeletedClass( $revRecord );
                        return '<span class="' . $class . '">' . $link . '</span>';
                }
                return $link;
        }

        /**
         * Returns css class of a deleted revision
         * @param RevisionRecord $revisionRecord
         * @return string 'history-deleted', 'mw-history-suppressed' added if suppressed too
         * @since 1.37
         */
        public static function getRevisionDeletedClass( RevisionRecord $revisionRecord ): string {
                $class = 'history-deleted';
                if ( $revisionRecord->isDeleted( RevisionRecord::DELETED_RESTRICTED ) ) {
                        $class .= ' mw-history-suppressed';
                }
                return $class;
        }

        /**
         * Generate a user tool link cluster if the current user is allowed to view it
         *
         * This method produces HTML that requires CSS styles in mediawiki.interface.helpers.styles.
         *
         * @since 1.16.3
         * @param RevisionRecord $revRecord (Switched from the old Revision class to RevisionRecord
         *    since 1.35)
         * @param bool $isPublic Show only if all users can see it
         * @param bool $useParentheses (optional) Wrap comments in parentheses where needed
         * @return string HTML
         */
        public static function revUserTools(
                RevisionRecord $revRecord,
                $isPublic = false,
                $useParentheses = true
        ) {
                // TODO inject authority
                $authority = RequestContext::getMain()->getAuthority();

                $revUser = $revRecord->getUser(
                        $isPublic ? RevisionRecord::FOR_PUBLIC : RevisionRecord::FOR_THIS_USER,
                        $authority
                );
                if ( $revUser ) {
                        $link = self::userLink(
                                $revUser->getId(),
                                $revUser->getName(),
                                false,
                                [ 'data-mw-revid' => $revRecord->getId() ]
                        ) . self::userToolLinks(
                                $revUser->getId(),
                                $revUser->getName(),
                                false,
                                0,
                                null,
                                $useParentheses
                        );
                } else {
                        // User is deleted and we can't (or don't want to) view it
                        $link = wfMessage( 'rev-deleted-user' )->escaped();
                }

                if ( $revRecord->isDeleted( RevisionRecord::DELETED_USER ) ) {
                        $class = self::getRevisionDeletedClass( $revRecord );
                        return ' <span class="' . $class . ' mw-userlink">' . $link . '</span>';
                }
                return $link;
        }

        /**
         * Helper function to expand local links. Mostly used in action=render
         *
         * @since 1.38
         * @unstable
         *
         * @param string $html
         *
         * @return string HTML
         */
        public static function expandLocalLinks( string $html ) {
                return HtmlHelper::modifyElements(
                        $html,
                        static function ( SerializerNode $node ): bool {
                                return $node->name === 'a' && isset( $node->attrs['href'] );
                        },
                        static function ( SerializerNode $node ): SerializerNode {
                                $urlUtils = MediaWikiServices::getInstance()->getUrlUtils();
                                $node->attrs['href'] =
                                        $urlUtils->expand( $node->attrs['href'], PROTO_RELATIVE ) ?? false;
                                return $node;
                        }
                );
        }

        /**
         * @param LinkTarget|null $contextTitle
         * @param string $target
         * @param string &$text
         * @return string
         */
        public static function normalizeSubpageLink( $contextTitle, $target, &$text ) {
                # Valid link forms:
                # Foobar -- normal
                # :Foobar -- override special treatment of prefix (images, language links)
                # /Foobar -- convert to CurrentPage/Foobar
                # /Foobar/ -- convert to CurrentPage/Foobar, strip the initial and final / from text
                # ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage
                # ../Foobar -- convert to CurrentPage/Foobar,
                #              (from CurrentPage/CurrentSubPage)
                # ../Foobar/ -- convert to CurrentPage/Foobar, use 'Foobar' as text
                #              (from CurrentPage/CurrentSubPage)

                $ret = $target; # default return value is no change

                # Some namespaces don't allow subpages,
                # so only perform processing if subpages are allowed
                if (
                        $contextTitle && MediaWikiServices::getInstance()->getNamespaceInfo()->
                        hasSubpages( $contextTitle->getNamespace() )
                ) {
                        $hash = strpos( $target, '#' );
                        if ( $hash !== false ) {
                                $suffix = substr( $target, $hash );
                                $target = substr( $target, 0, $hash );
                        } else {
                                $suffix = '';
                        }
                        # T9425
                        $target = trim( $target );
                        $contextPrefixedText = MediaWikiServices::getInstance()->getTitleFormatter()->
                                getPrefixedText( $contextTitle );
                        # Look at the first character
                        if ( $target != '' && $target[0] === '/' ) {
                                # / at end means we don't want the slash to be shown
                                $m = [];
                                $trailingSlashes = preg_match_all( '%(/+)$%', $target, $m );
                                if ( $trailingSlashes ) {
                                        $noslash = $target = substr( $target, 1, -strlen( $m[0][0] ) );
                                } else {
                                        $noslash = substr( $target, 1 );
                                }

                                $ret = $contextPrefixedText . '/' . trim( $noslash ) . $suffix;
                                if ( $text === '' ) {
                                        $text = $target . $suffix;
                                } # this might be changed for ugliness reasons
                        } else {
                                # check for .. subpage backlinks
                                $dotdotcount = 0;
                                $nodotdot = $target;
                                while ( str_starts_with( $nodotdot, '../' ) ) {
                                        ++$dotdotcount;
                                        $nodotdot = substr( $nodotdot, 3 );
                                }
                                if ( $dotdotcount > 0 ) {
                                        $exploded = explode( '/', $contextPrefixedText );
                                        if ( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page
                                                $ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) );
                                                # / at the end means don't show full path
                                                if ( substr( $nodotdot, -1, 1 ) === '/' ) {
                                                        $nodotdot = rtrim( $nodotdot, '/' );
                                                        if ( $text === '' ) {
                                                                $text = $nodotdot . $suffix;
                                                        }
                                                }
                                                $nodotdot = trim( $nodotdot );
                                                if ( $nodotdot != '' ) {
                                                        $ret .= '/' . $nodotdot;
                                                }
                                                $ret .= $suffix;
                                        }
                                }
                        }
                }

                return $ret;
        }

        /**
         * @since 1.16.3
         * @param int $size
         * @return string
         */
        public static function formatRevisionSize( $size ) {
                if ( $size == 0 ) {
                        $stxt = wfMessage( 'historyempty' )->escaped();
                } else {
                        $stxt = wfMessage( 'nbytes' )->numParams( $size )->escaped();
                }
                return "<span class=\"history-size mw-diff-bytes\" data-mw-bytes=\"$size\">$stxt</span>";
        }

        /**
         * Split a link trail, return the "inside" portion and the remainder of the trail
         * as a two-element array
         * @param string $trail
         * @return string[]
         */
        public static function splitTrail( $trail ) {
                $regex = MediaWikiServices::getInstance()->getContentLanguage()->linkTrail();
                $inside = '';
                if ( $trail !== '' && preg_match( $regex, $trail, $m ) ) {
                        [ , $inside, $trail ] = $m;
                }
                return [ $inside, $trail ];
        }

        /**
         * Generate a rollback link for a given revision.  Currently it's the
         * caller's responsibility to ensure that the revision is the top one. If
         * it's not, of course, the user will get an error message.
         *
         * If the calling page is called with the parameter &bot=1, all rollback
         * links also get that parameter. It causes the edit itself and the rollback
         * to be marked as "bot" edits. Bot edits are hidden by default from recent
         * changes, so this allows sysops to combat a busy vandal without bothering
         * other users.
         *
         * This function will return the link only in case the revision can be reverted
         * (not all revisions are by the same user, and the last revision by a different
         * user is visible). Please note that due to performance limitations it might be
         * assumed that a user isn't the only contributor of a page while (s)he is, which
         * will lead to useless rollback links. Furthermore this won't work if
         * $wgShowRollbackEditCount is disabled, so this can only function as an
         * additional check.
         *
         * If the option noBrackets is set the rollback link wont be enclosed in "[]".
         *
         * @since 1.16.3. $context added in 1.20. $options added in 1.21
         *   $rev could be a RevisionRecord since 1.35
         *
         * @param RevisionRecord $revRecord (Switched from the old Revision class to RevisionRecord
         *    since 1.35)
         * @param IContextSource|null $context Context to use or null for the main context.
         * @param array $options
         * @return string
         */
        public static function generateRollback(
                RevisionRecord $revRecord,
                ?IContextSource $context = null,
                $options = []
        ) {
                $context ??= RequestContext::getMain();

                $editCount = self::getRollbackEditCount( $revRecord );
                if ( $editCount === false ) {
                        return '';
                }

                $inner = self::buildRollbackLink( $revRecord, $context, $editCount );

                $services = MediaWikiServices::getInstance();
                // Allow extensions to modify the rollback link.
                // Abort further execution if the extension wants full control over the link.
                if ( !( new HookRunner( $services->getHookContainer() ) )->onLinkerGenerateRollbackLink(
                        $revRecord, $context, $options, $inner ) ) {
                        return $inner;
                }

                if ( !in_array( 'noBrackets', $options, true ) ) {
                        $inner = $context->msg( 'brackets' )->rawParams( $inner )->escaped();
                }

                if ( $services->getUserOptionsLookup()
                        ->getBoolOption( $context->getUser(), 'showrollbackconfirmation' )
                ) {
                        $services->getStatsFactory()
                                ->getCounter( 'rollbackconfirmation_event_load_total' )
                                ->copyToStatsdAt( 'rollbackconfirmation.event.load' )
                                ->increment();
                        $context->getOutput()->addModules( 'mediawiki.misc-authed-curate' );
                }

                return '<span class="mw-rollback-link">' . $inner . '</span>';
        }

        /**
         * This function will return the number of revisions which a rollback
         * would revert and will verify that a revision can be reverted (that
         * the user isn't the only contributor and the revision we might
         * rollback to isn't deleted). These checks can only function as an
         * additional check as this function only checks against the last
         * $wgShowRollbackEditCount edits.
         *
         * Returns null if $wgShowRollbackEditCount is disabled or false if
         * the user is the only contributor of the page.
         *
         * @todo Unused outside of this file - should it be made private?
         *
         * @param RevisionRecord $revRecord (Switched from the old Revision class to RevisionRecord
         *    since 1.35)
         * @param bool $verify Deprecated since 1.40, has no effect.
         * @return int|false|null
         */
        public static function getRollbackEditCount( RevisionRecord $revRecord, $verify = true ) {
                if ( func_num_args() > 1 ) {
                        wfDeprecated( __METHOD__ . ' with $verify parameter', '1.40' );
                }
                $showRollbackEditCount = MediaWikiServices::getInstance()->getMainConfig()
                        ->get( MainConfigNames::ShowRollbackEditCount );

                if ( !is_int( $showRollbackEditCount ) || !$showRollbackEditCount > 0 ) {
                        // Nothing has happened, indicate this by returning 'null'
                        return null;
                }

                $dbr = MediaWikiServices::getInstance()->getConnectionProvider()->getReplicaDatabase();

                // Up to the value of $wgShowRollbackEditCount revisions are counted
                $queryBuilder = MediaWikiServices::getInstance()->getRevisionStore()->newSelectQueryBuilder( $dbr );
                $res = $queryBuilder->where( [ 'rev_page' => $revRecord->getPageId() ] )
                        ->useIndex( [ 'revision' => 'rev_page_timestamp' ] )
                        ->orderBy( [ 'rev_timestamp', 'rev_id' ], SelectQueryBuilder::SORT_DESC )
                        ->limit( $showRollbackEditCount + 1 )
                        ->caller( __METHOD__ )->fetchResultSet();

                $revUser = $revRecord->getUser( RevisionRecord::RAW );
                $revUserText = $revUser ? $revUser->getName() : '';

                $editCount = 0;
                $moreRevs = false;
                foreach ( $res as $row ) {
                        if ( $row->rev_user_text != $revUserText ) {
                                if ( $row->rev_deleted & RevisionRecord::DELETED_TEXT
                                        || $row->rev_deleted & RevisionRecord::DELETED_USER
                                ) {
                                        // If the user or the text of the revision we might rollback
                                        // to is deleted in some way we can't rollback. Similar to
                                        // the checks in WikiPage::commitRollback.
                                        return false;
                                }
                                $moreRevs = true;
                                break;
                        }
                        $editCount++;
                }

                if ( $editCount <= $showRollbackEditCount && !$moreRevs ) {
                        // We didn't find at least $wgShowRollbackEditCount revisions made by the current user
                        // and there weren't any other revisions. That means that the current user is the only
                        // editor, so we can't rollback
                        return false;
                }
                return $editCount;
        }

        /**
         * Build a raw rollback link, useful for collections of "tool" links
         *
         * @since 1.16.3. $context added in 1.20. $editCount added in 1.21
         *   $rev could be a RevisionRecord since 1.35
         *
         * @todo Unused outside of this file - should it be made private?
         *
         * @param RevisionRecord $revRecord (Switched from the old Revision class to RevisionRecord
         *    since 1.35)
         * @param IContextSource|null $context Context to use or null for the main context.
         * @param int|false|null $editCount Number of edits that would be reverted
         * @return string HTML fragment
         */
        public static function buildRollbackLink(
                RevisionRecord $revRecord,
                ?IContextSource $context = null,
                $editCount = false
        ) {
                $config = MediaWikiServices::getInstance()->getMainConfig();
                $showRollbackEditCount = $config->get( MainConfigNames::ShowRollbackEditCount );
                $miserMode = $config->get( MainConfigNames::MiserMode );
                // To config which pages are affected by miser mode
                $disableRollbackEditCountSpecialPage = [ 'Recentchanges', 'Watchlist' ];

                $context ??= RequestContext::getMain();

                $title = $revRecord->getPageAsLinkTarget();
                $revUser = $revRecord->getUser();
                $revUserText = $revUser ? $revUser->getName() : '';

                $query = [
                        'action' => 'rollback',
                        'from' => $revUserText,
                        'token' => $context->getUser()->getEditToken( 'rollback' ),
                ];

                $attrs = [
                        'data-mw' => 'interface',
                        'title' => $context->msg( 'tooltip-rollback' )->text()
                ];

                $options = [ 'known', 'noclasses' ];

                if ( $context->getRequest()->getBool( 'bot' ) ) {
                        // T17999
                        $query['hidediff'] = '1';
                        $query['bot'] = '1';
                }

                if ( $miserMode ) {
                        foreach ( $disableRollbackEditCountSpecialPage as $specialPage ) {
                                if ( $context->getTitle()->isSpecial( $specialPage ) ) {
                                        $showRollbackEditCount = false;
                                        break;
                                }
                        }
                }

                // The edit count can be 0 on replica lag, fall back to the generic rollbacklink message
                $msg = [ 'rollbacklink' ];
                if ( is_int( $showRollbackEditCount ) && $showRollbackEditCount > 0 ) {
                        if ( !is_numeric( $editCount ) ) {
                                $editCount = self::getRollbackEditCount( $revRecord );
                        }

                        if ( $editCount > $showRollbackEditCount ) {
                                $msg = [ 'rollbacklinkcount-morethan', Message::numParam( $showRollbackEditCount ) ];
                        } elseif ( $editCount ) {
                                $msg = [ 'rollbacklinkcount', Message::numParam( $editCount ) ];
                        }
                }

                $html = $context->msg( ...$msg )->parse();
                return self::link( $title, $html, $attrs, $query, $options );
        }

        /**
         * Returns HTML for the "hidden categories on this page" list.
         *
         * @since 1.16.3
         * @param array $hiddencats Array of hidden categories
         *    from {@link WikiPage::getHiddenCategories} or similar
         * @return string HTML output
         */
        public static function formatHiddenCategories( $hiddencats ) {
                $outText = '';
                if ( count( $hiddencats ) > 0 ) {
                        # Construct the HTML
                        $outText = '<div class="mw-hiddenCategoriesExplanation">';
                        $outText .= wfMessage( 'hiddencategories' )->numParams( count( $hiddencats ) )->parseAsBlock();
                        $outText .= "</div><ul>\n";

                        foreach ( $hiddencats as $titleObj ) {
                                # If it's hidden, it must exist - no need to check with a LinkBatch
                                $outText .= '<li>'
                                        . self::link( $titleObj, null, [], [], 'known' )
                                        . "</li>\n";
                        }
                        $outText .= '</ul>';
                }
                return $outText;
        }

        /**
         * @return ContextSource
         */
        private static function getContextFromMain() {
                $context = RequestContext::getMain();
                $context = new DerivativeContext( $context );
                return $context;
        }

        /**
         * Given the id of an interface element, constructs the appropriate title
         * attribute from the system messages.  (Note, this is usually the id but
         * isn't always, because sometimes the accesskey needs to go on a different
         * element than the id, for reverse-compatibility, etc.)
         *
         * @since 1.16.3 $msgParams added in 1.27
         * @param string $name Id of the element, minus prefixes.
         * @param string|array|null $options Null, string or array with some of the following options:
         *   - 'withaccess' to add an access-key hint
         *   - 'nonexisting' to add an accessibility hint that page does not exist
         * @param array $msgParams Parameters to pass to the message
         * @param MessageLocalizer|null $localizer
         *
         * @return string|false Contents of the title attribute (which you must HTML-
         *   escape), or false for no title attribute
         */
        public static function titleAttrib( $name, $options = null, array $msgParams = [], $localizer = null ) {
                if ( !$localizer ) {
                        $localizer = self::getContextFromMain();
                }
                $message = $localizer->msg( "tooltip-$name", $msgParams );
                // Set a default tooltip for subject namespace tabs if that hasn't
                // been defined. See T22126
                if ( !$message->exists() && str_starts_with( $name, 'ca-nstab-' ) ) {
                        $message = $localizer->msg( 'tooltip-ca-nstab' );
                }

                if ( $message->isDisabled() ) {
                        $tooltip = false;
                } else {
                        $tooltip = $message->text();
                        # Compatibility: formerly some tooltips had [alt-.] hardcoded
                        $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
                }

                $options = (array)$options;

                if ( in_array( 'nonexisting', $options ) ) {
                        $tooltip = $localizer->msg( 'red-link-title', $tooltip ?: '' )->text();
                }
                if ( in_array( 'withaccess', $options ) ) {
                        $accesskey = self::accesskey( $name, $localizer );
                        if ( $accesskey !== false ) {
                                // Should be build the same as in jquery.accessKeyLabel.js
                                if ( $tooltip === false || $tooltip === '' ) {
                                        $tooltip = $localizer->msg( 'brackets', $accesskey )->text();
                                } else {
                                        $tooltip .= $localizer->msg( 'word-separator' )->text();
                                        $tooltip .= $localizer->msg( 'brackets', $accesskey )->text();
                                }
                        }
                }

                return $tooltip;
        }

        /** @var (string|false)[] */
        public static $accesskeycache;

        /**
         * Given the id of an interface element, constructs the appropriate
         * accesskey attribute from the system messages.  (Note, this is usually
         * the id but isn't always, because sometimes the accesskey needs to go on
         * a different element than the id, for reverse-compatibility, etc.)
         *
         * @since 1.16.3
         * @param string $name Id of the element, minus prefixes.
         * @param MessageLocalizer|null $localizer
         * @return string|false Contents of the accesskey attribute (which you must HTML-
         *   escape), or false for no accesskey attribute
         */
        public static function accesskey( $name, $localizer = null ) {
                if ( !isset( self::$accesskeycache[$name] ) ) {
                        if ( !$localizer ) {
                                $localizer = self::getContextFromMain();
                        }
                        $msg = $localizer->msg( "accesskey-$name" );
                        // Set a default accesskey for subject namespace tabs if an
                        // accesskey has not been defined. See T22126
                        if ( !$msg->exists() && str_starts_with( $name, 'ca-nstab-' ) ) {
                                $msg = $localizer->msg( 'accesskey-ca-nstab' );
                        }
                        self::$accesskeycache[$name] = $msg->isDisabled() ? false : $msg->plain();
                }
                return self::$accesskeycache[$name];
        }

        /**
         * Get a revision-deletion link, or disabled link, or nothing, depending
         * on user permissions & the settings on the revision.
         *
         * Will use forward-compatible revision ID in the Special:RevDelete link
         * if possible, otherwise the timestamp-based ID which may break after
         * undeletion.
         *
         * @param Authority $performer
         * @param RevisionRecord $revRecord (Switched from the old Revision class to RevisionRecord
         *    since 1.35)
         * @param LinkTarget $title
         * @return string HTML fragment
         */
        public static function getRevDeleteLink(
                Authority $performer,
                RevisionRecord $revRecord,
                LinkTarget $title
        ) {
                $canHide = $performer->isAllowed( 'deleterevision' );
                $canHideHistory = $performer->isAllowed( 'deletedhistory' );
                if ( !$canHide && !( $revRecord->getVisibility() && $canHideHistory ) ) {
                        return '';
                }

                if ( !$revRecord->userCan( RevisionRecord::DELETED_RESTRICTED, $performer ) ) {
                        return self::revDeleteLinkDisabled( $canHide ); // revision was hidden from sysops
                }
                $prefixedDbKey = MediaWikiServices::getInstance()->getTitleFormatter()->
                        getPrefixedDBkey( $title );
                if ( $revRecord->getId() ) {
                        // RevDelete links using revision ID are stable across
                        // page deletion and undeletion; use when possible.
                        $query = [
                                'type' => 'revision',
                                'target' => $prefixedDbKey,
                                'ids' => $revRecord->getId()
                        ];
                } else {
                        // Older deleted entries didn't save a revision ID.
                        // We have to refer to these by timestamp, ick!
                        $query = [
                                'type' => 'archive',
                                'target' => $prefixedDbKey,
                                'ids' => $revRecord->getTimestamp()
                        ];
                }
                return self::revDeleteLink(
                        $query,
                        $revRecord->isDeleted( RevisionRecord::DELETED_RESTRICTED ),
                        $canHide
                );
        }

        /**
         * Creates a (show/hide) link for deleting revisions/log entries
         *
         * This method produces HTML that requires CSS styles in mediawiki.interface.helpers.styles.
         *
         * @param array $query Query parameters to be passed to link()
         * @param bool $restricted Set to true to use a "<strong>" instead of a "<span>"
         * @param bool $delete Set to true to use (show/hide) rather than (show)
         *
         * @return string HTML "<a>" link to Special:Revisiondelete, wrapped in a
         * span to allow for customization of appearance with CSS
         */
        public static function revDeleteLink( $query = [], $restricted = false, $delete = true ) {
                $sp = SpecialPage::getTitleFor( 'Revisiondelete' );
                $msgKey = $delete ? 'rev-delundel' : 'rev-showdeleted';
                $html = wfMessage( $msgKey )->escaped();
                $tag = $restricted ? 'strong' : 'span';
                $link = self::link( $sp, $html, [], $query, [ 'known', 'noclasses' ] );
                return Xml::tags(
                        $tag,
                        [ 'class' => 'mw-revdelundel-link' ],
                        wfMessage( 'parentheses' )->rawParams( $link )->escaped()
                );
        }

        /**
         * Creates a dead (show/hide) link for deleting revisions/log entries
         *
         * This method produces HTML that requires CSS styles in mediawiki.interface.helpers.styles.
         *
         * @since 1.16.3
         * @param bool $delete Set to true to use (show/hide) rather than (show)
         *
         * @return string HTML text wrapped in a span to allow for customization
         * of appearance with CSS
         */
        public static function revDeleteLinkDisabled( $delete = true ) {
                $msgKey = $delete ? 'rev-delundel' : 'rev-showdeleted';
                $html = wfMessage( $msgKey )->escaped();
                $htmlParentheses = wfMessage( 'parentheses' )->rawParams( $html )->escaped();
                return Xml::tags( 'span', [ 'class' => 'mw-revdelundel-link' ], $htmlParentheses );
        }

        /**
         * Returns the attributes for the tooltip and access key.
         *
         * @since 1.16.3. $msgParams introduced in 1.27
         * @param string $name
         * @param array $msgParams Params for constructing the message
         * @param string|array|null $options Options to be passed to titleAttrib.
         * @param MessageLocalizer|null $localizer
         *
         * @see Linker::titleAttrib for what options could be passed to $options.
         *
         * @return array
         */
        public static function tooltipAndAccesskeyAttribs(
                $name,
                array $msgParams = [],
                $options = null,
                $localizer = null
        ) {
                $options = (array)$options;
                $options[] = 'withaccess';

                // Get optional parameters from global context if any missing.
                if ( !$localizer ) {
                        $localizer = self::getContextFromMain();
                }

                $attribs = [
                        'title' => self::titleAttrib( $name, $options, $msgParams, $localizer ),
                        'accesskey' => self::accesskey( $name, $localizer )
                ];
                if ( $attribs['title'] === false ) {
                        unset( $attribs['title'] );
                }
                if ( $attribs['accesskey'] === false ) {
                        unset( $attribs['accesskey'] );
                }
                return $attribs;
        }

        /**
         * Returns raw bits of HTML, use titleAttrib()
         * @since 1.16.3
         * @param string $name
         * @param array|null $options
         * @return null|string
         */
        public static function tooltip( $name, $options = null ) {
                $tooltip = self::titleAttrib( $name, $options );
                if ( $tooltip === false ) {
                        return '';
                }
                return Xml::expandAttributes( [
                        'title' => $tooltip
                ] );
        }

}

/** @deprecated class alias since 1.40 */
class_alias( Linker::class, 'Linker' );