]> scripts.mit.edu Git - autoinstallsdev/mediawiki.git/blobdiff - includes/skins/Skin.php
MediaWiki 1.30.2
[autoinstallsdev/mediawiki.git] / includes / skins / Skin.php
diff --git a/includes/skins/Skin.php b/includes/skins/Skin.php
new file mode 100644 (file)
index 0000000..8fb0d1c
--- /dev/null
@@ -0,0 +1,1627 @@
+<?php
+/**
+ * Base class for all skins.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+use MediaWiki\MediaWikiServices;
+
+/**
+ * @defgroup Skins Skins
+ */
+
+/**
+ * The main skin class which provides methods and properties for all other skins.
+ *
+ * See docs/skin.txt for more information.
+ *
+ * @ingroup Skins
+ */
+abstract class Skin extends ContextSource {
+       protected $skinname = null;
+       protected $mRelevantTitle = null;
+       protected $mRelevantUser = null;
+
+       /**
+        * @var string Stylesheets set to use. Subdirectory in skins/ where various stylesheets are
+        *   located. Only needs to be set if you intend to use the getSkinStylePath() method.
+        */
+       public $stylename = null;
+
+       /**
+        * Fetch the set of available skins.
+        * @return array Associative array of strings
+        */
+       static function getSkinNames() {
+               return SkinFactory::getDefaultInstance()->getSkinNames();
+       }
+
+       /**
+        * Fetch the skinname messages for available skins.
+        * @return string[]
+        */
+       static function getSkinNameMessages() {
+               $messages = [];
+               foreach ( self::getSkinNames() as $skinKey => $skinName ) {
+                       $messages[] = "skinname-$skinKey";
+               }
+               return $messages;
+       }
+
+       /**
+        * Fetch the list of user-selectable skins in regards to $wgSkipSkins.
+        * Useful for Special:Preferences and other places where you
+        * only want to show skins users _can_ use.
+        * @return string[]
+        * @since 1.23
+        */
+       public static function getAllowedSkins() {
+               global $wgSkipSkins;
+
+               $allowedSkins = self::getSkinNames();
+
+               foreach ( $wgSkipSkins as $skip ) {
+                       unset( $allowedSkins[$skip] );
+               }
+
+               return $allowedSkins;
+       }
+
+       /**
+        * Normalize a skin preference value to a form that can be loaded.
+        *
+        * If a skin can't be found, it will fall back to the configured default ($wgDefaultSkin), or the
+        * hardcoded default ($wgFallbackSkin) if the default skin is unavailable too.
+        *
+        * @param string $key 'monobook', 'vector', etc.
+        * @return string
+        */
+       static function normalizeKey( $key ) {
+               global $wgDefaultSkin, $wgFallbackSkin;
+
+               $skinNames = self::getSkinNames();
+
+               // Make keys lowercase for case-insensitive matching.
+               $skinNames = array_change_key_case( $skinNames, CASE_LOWER );
+               $key = strtolower( $key );
+               $defaultSkin = strtolower( $wgDefaultSkin );
+               $fallbackSkin = strtolower( $wgFallbackSkin );
+
+               if ( $key == '' || $key == 'default' ) {
+                       // Don't return the default immediately;
+                       // in a misconfiguration we need to fall back.
+                       $key = $defaultSkin;
+               }
+
+               if ( isset( $skinNames[$key] ) ) {
+                       return $key;
+               }
+
+               // Older versions of the software used a numeric setting
+               // in the user preferences.
+               $fallback = [
+                       0 => $defaultSkin,
+                       2 => 'cologneblue'
+               ];
+
+               if ( isset( $fallback[$key] ) ) {
+                       $key = $fallback[$key];
+               }
+
+               if ( isset( $skinNames[$key] ) ) {
+                       return $key;
+               } elseif ( isset( $skinNames[$defaultSkin] ) ) {
+                       return $defaultSkin;
+               } else {
+                       return $fallbackSkin;
+               }
+       }
+
+       /**
+        * @return string Skin name
+        */
+       public function getSkinName() {
+               return $this->skinname;
+       }
+
+       /**
+        * @param OutputPage $out
+        */
+       public function initPage( OutputPage $out ) {
+               $this->preloadExistence();
+       }
+
+       /**
+        * Defines the ResourceLoader modules that should be added to the skin
+        * It is recommended that skins wishing to override call parent::getDefaultModules()
+        * and substitute out any modules they wish to change by using a key to look them up
+        *
+        * For style modules, use setupSkinUserCss() instead.
+        *
+        * @return array Array of modules with helper keys for easy overriding
+        */
+       public function getDefaultModules() {
+               global $wgUseAjax, $wgEnableAPI, $wgEnableWriteAPI;
+
+               $out = $this->getOutput();
+               $config = $this->getConfig();
+               $user = $out->getUser();
+               $modules = [
+                       // modules not specific to any specific skin or page
+                       'core' => [
+                               // Enforce various default modules for all pages and all skins
+                               // Keep this list as small as possible
+                               'site',
+                               'mediawiki.page.startup',
+                               'mediawiki.user',
+                       ],
+                       // modules that enhance the page content in some way
+                       'content' => [
+                               'mediawiki.page.ready',
+                       ],
+                       // modules relating to search functionality
+                       'search' => [],
+                       // modules relating to functionality relating to watching an article
+                       'watch' => [],
+                       // modules which relate to the current users preferences
+                       'user' => [],
+               ];
+
+               // Support for high-density display images if enabled
+               if ( $config->get( 'ResponsiveImages' ) ) {
+                       $modules['core'][] = 'mediawiki.hidpi';
+               }
+
+               // Preload jquery.tablesorter for mediawiki.page.ready
+               if ( strpos( $out->getHTML(), 'sortable' ) !== false ) {
+                       $modules['content'][] = 'jquery.tablesorter';
+               }
+
+               // Preload jquery.makeCollapsible for mediawiki.page.ready
+               if ( strpos( $out->getHTML(), 'mw-collapsible' ) !== false ) {
+                       $modules['content'][] = 'jquery.makeCollapsible';
+               }
+
+               if ( $out->isTOCEnabled() ) {
+                       $modules['content'][] = 'mediawiki.toc';
+               }
+
+               // Add various resources if required
+               if ( $wgUseAjax && $wgEnableAPI ) {
+                       if ( $wgEnableWriteAPI && $user->isLoggedIn()
+                               && $user->isAllowedAll( 'writeapi', 'viewmywatchlist', 'editmywatchlist' )
+                               && $this->getRelevantTitle()->canExist()
+                       ) {
+                               $modules['watch'][] = 'mediawiki.page.watch.ajax';
+                       }
+
+                       $modules['search'][] = 'mediawiki.searchSuggest';
+               }
+
+               if ( $user->getBoolOption( 'editsectiononrightclick' ) ) {
+                       $modules['user'][] = 'mediawiki.action.view.rightClickEdit';
+               }
+
+               // Crazy edit-on-double-click stuff
+               if ( $out->isArticle() && $user->getOption( 'editondblclick' ) ) {
+                       $modules['user'][] = 'mediawiki.action.view.dblClickEdit';
+               }
+               return $modules;
+       }
+
+       /**
+        * Preload the existence of three commonly-requested pages in a single query
+        */
+       protected function preloadExistence() {
+               $titles = [];
+
+               // User/talk link
+               $user = $this->getUser();
+               if ( $user->isLoggedIn() ) {
+                       $titles[] = $user->getUserPage();
+                       $titles[] = $user->getTalkPage();
+               }
+
+               // Check, if the page can hold some kind of content, otherwise do nothing
+               $title = $this->getRelevantTitle();
+               if ( $title->canExist() ) {
+                       if ( $title->isTalkPage() ) {
+                               $titles[] = $title->getSubjectPage();
+                       } else {
+                               $titles[] = $title->getTalkPage();
+                       }
+               }
+
+               // Footer links (used by SkinTemplate::prepareQuickTemplate)
+               foreach ( [
+                       $this->footerLinkTitle( 'privacy', 'privacypage' ),
+                       $this->footerLinkTitle( 'aboutsite', 'aboutpage' ),
+                       $this->footerLinkTitle( 'disclaimers', 'disclaimerpage' ),
+               ] as $title ) {
+                       if ( $title ) {
+                               $titles[] = $title;
+                       }
+               }
+
+               Hooks::run( 'SkinPreloadExistence', [ &$titles, $this ] );
+
+               if ( $titles ) {
+                       $lb = new LinkBatch( $titles );
+                       $lb->setCaller( __METHOD__ );
+                       $lb->execute();
+               }
+       }
+
+       /**
+        * Get the current revision ID
+        *
+        * @return int
+        */
+       public function getRevisionId() {
+               return $this->getOutput()->getRevisionId();
+       }
+
+       /**
+        * Whether the revision displayed is the latest revision of the page
+        *
+        * @return bool
+        */
+       public function isRevisionCurrent() {
+               $revID = $this->getRevisionId();
+               return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
+       }
+
+       /**
+        * Set the "relevant" title
+        * @see self::getRelevantTitle()
+        * @param Title $t
+        */
+       public function setRelevantTitle( $t ) {
+               $this->mRelevantTitle = $t;
+       }
+
+       /**
+        * Return the "relevant" title.
+        * A "relevant" title is not necessarily the actual title of the page.
+        * Special pages like Special:MovePage use set the page they are acting on
+        * as their "relevant" title, this allows the skin system to display things
+        * such as content tabs which belong to to that page instead of displaying
+        * a basic special page tab which has almost no meaning.
+        *
+        * @return Title
+        */
+       public function getRelevantTitle() {
+               if ( isset( $this->mRelevantTitle ) ) {
+                       return $this->mRelevantTitle;
+               }
+               return $this->getTitle();
+       }
+
+       /**
+        * Set the "relevant" user
+        * @see self::getRelevantUser()
+        * @param User $u
+        */
+       public function setRelevantUser( $u ) {
+               $this->mRelevantUser = $u;
+       }
+
+       /**
+        * Return the "relevant" user.
+        * A "relevant" user is similar to a relevant title. Special pages like
+        * Special:Contributions mark the user which they are relevant to so that
+        * things like the toolbox can display the information they usually are only
+        * able to display on a user's userpage and talkpage.
+        * @return User
+        */
+       public function getRelevantUser() {
+               if ( isset( $this->mRelevantUser ) ) {
+                       return $this->mRelevantUser;
+               }
+               $title = $this->getRelevantTitle();
+               if ( $title->hasSubjectNamespace( NS_USER ) ) {
+                       $rootUser = $title->getRootText();
+                       if ( User::isIP( $rootUser ) ) {
+                               $this->mRelevantUser = User::newFromName( $rootUser, false );
+                       } else {
+                               $user = User::newFromName( $rootUser, false );
+
+                               if ( $user ) {
+                                       $user->load( User::READ_NORMAL );
+
+                                       if ( $user->isLoggedIn() ) {
+                                               $this->mRelevantUser = $user;
+                                       }
+                               }
+                       }
+                       return $this->mRelevantUser;
+               }
+               return null;
+       }
+
+       /**
+        * Outputs the HTML generated by other functions.
+        * @param OutputPage $out
+        */
+       abstract function outputPage( OutputPage $out = null );
+
+       /**
+        * @param array $data
+        * @return string
+        */
+       static function makeVariablesScript( $data ) {
+               if ( $data ) {
+                       return ResourceLoader::makeInlineScript(
+                               ResourceLoader::makeConfigSetScript( $data )
+                       );
+               } else {
+                       return '';
+               }
+       }
+
+       /**
+        * Get the query to generate a dynamic stylesheet
+        *
+        * @return array
+        */
+       public static function getDynamicStylesheetQuery() {
+               global $wgSquidMaxage;
+
+               return [
+                               'action' => 'raw',
+                               'maxage' => $wgSquidMaxage,
+                               'usemsgcache' => 'yes',
+                               'ctype' => 'text/css',
+                               'smaxage' => $wgSquidMaxage,
+                       ];
+       }
+
+       /**
+        * Add skin specific stylesheets
+        * Calling this method with an $out of anything but the same OutputPage
+        * inside ->getOutput() is deprecated. The $out arg is kept
+        * for compatibility purposes with skins.
+        * @param OutputPage $out
+        * @todo delete
+        */
+       abstract function setupSkinUserCss( OutputPage $out );
+
+       /**
+        * TODO: document
+        * @param Title $title
+        * @return string
+        */
+       function getPageClasses( $title ) {
+               $numeric = 'ns-' . $title->getNamespace();
+
+               if ( $title->isSpecialPage() ) {
+                       $type = 'ns-special';
+                       // T25315: provide a class based on the canonical special page name without subpages
+                       list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
+                       if ( $canonicalName ) {
+                               $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
+                       } else {
+                               $type .= ' mw-invalidspecialpage';
+                       }
+               } elseif ( $title->isTalkPage() ) {
+                       $type = 'ns-talk';
+               } else {
+                       $type = 'ns-subject';
+               }
+
+               $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
+               $root = Sanitizer::escapeClass( 'rootpage-' . $title->getRootTitle()->getPrefixedText() );
+
+               return "$numeric $type $name $root";
+       }
+
+       /**
+        * Return values for <html> element
+        * @return array Array of associative name-to-value elements for <html> element
+        */
+       public function getHtmlElementAttributes() {
+               $lang = $this->getLanguage();
+               return [
+                       'lang' => $lang->getHtmlCode(),
+                       'dir' => $lang->getDir(),
+                       'class' => 'client-nojs',
+               ];
+       }
+
+       /**
+        * This will be called by OutputPage::headElement when it is creating the
+        * "<body>" tag, skins can override it if they have a need to add in any
+        * body attributes or classes of their own.
+        * @param OutputPage $out
+        * @param array &$bodyAttrs
+        */
+       function addToBodyAttributes( $out, &$bodyAttrs ) {
+               // does nothing by default
+       }
+
+       /**
+        * URL to the logo
+        * @return string
+        */
+       function getLogo() {
+               global $wgLogo;
+               return $wgLogo;
+       }
+
+       /**
+        * Whether the logo should be preloaded with an HTTP link header or not
+        * @since 1.29
+        * @return bool
+        */
+       public function shouldPreloadLogo() {
+               return false;
+       }
+
+       /**
+        * @return string HTML
+        */
+       function getCategoryLinks() {
+               global $wgUseCategoryBrowser;
+
+               $out = $this->getOutput();
+               $allCats = $out->getCategoryLinks();
+
+               if ( !count( $allCats ) ) {
+                       return '';
+               }
+
+               $embed = "<li>";
+               $pop = "</li>";
+
+               $s = '';
+               $colon = $this->msg( 'colon-separator' )->escaped();
+
+               if ( !empty( $allCats['normal'] ) ) {
+                       $t = $embed . implode( "{$pop}{$embed}", $allCats['normal'] ) . $pop;
+
+                       $msg = $this->msg( 'pagecategories' )->numParams( count( $allCats['normal'] ) )->escaped();
+                       $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
+                       $title = Title::newFromText( $linkPage );
+                       $link = $title ? Linker::link( $title, $msg ) : $msg;
+                       $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
+                               $link . $colon . '<ul>' . $t . '</ul>' . '</div>';
+               }
+
+               # Hidden categories
+               if ( isset( $allCats['hidden'] ) ) {
+                       if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
+                               $class = ' mw-hidden-cats-user-shown';
+                       } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
+                               $class = ' mw-hidden-cats-ns-shown';
+                       } else {
+                               $class = ' mw-hidden-cats-hidden';
+                       }
+
+                       $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
+                               $this->msg( 'hidden-categories' )->numParams( count( $allCats['hidden'] ) )->escaped() .
+                               $colon . '<ul>' . $embed . implode( "{$pop}{$embed}", $allCats['hidden'] ) . $pop . '</ul>' .
+                               '</div>';
+               }
+
+               # optional 'dmoz-like' category browser. Will be shown under the list
+               # of categories an article belong to
+               if ( $wgUseCategoryBrowser ) {
+                       $s .= '<br /><hr />';
+
+                       # get a big array of the parents tree
+                       $parenttree = $this->getTitle()->getParentCategoryTree();
+                       # Skin object passed by reference cause it can not be
+                       # accessed under the method subfunction drawCategoryBrowser
+                       $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
+                       # Clean out bogus first entry and sort them
+                       unset( $tempout[0] );
+                       asort( $tempout );
+                       # Output one per line
+                       $s .= implode( "<br />\n", $tempout );
+               }
+
+               return $s;
+       }
+
+       /**
+        * Render the array as a series of links.
+        * @param array $tree Categories tree returned by Title::getParentCategoryTree
+        * @return string Separated by &gt;, terminate with "\n"
+        */
+       function drawCategoryBrowser( $tree ) {
+               $return = '';
+
+               foreach ( $tree as $element => $parent ) {
+                       if ( empty( $parent ) ) {
+                               # element start a new list
+                               $return .= "\n";
+                       } else {
+                               # grab the others elements
+                               $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
+                       }
+
+                       # add our current element to the list
+                       $eltitle = Title::newFromText( $element );
+                       $return .= Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
+               }
+
+               return $return;
+       }
+
+       /**
+        * @return string HTML
+        */
+       function getCategories() {
+               $out = $this->getOutput();
+               $catlinks = $this->getCategoryLinks();
+
+               // Check what we're showing
+               $allCats = $out->getCategoryLinks();
+               $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
+                                               $this->getTitle()->getNamespace() == NS_CATEGORY;
+
+               $classes = [ 'catlinks' ];
+               if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
+                       $classes[] = 'catlinks-allhidden';
+               }
+
+               return Html::rawElement(
+                       'div',
+                       [ 'id' => 'catlinks', 'class' => $classes, 'data-mw' => 'interface' ],
+                       $catlinks
+               );
+       }
+
+       /**
+        * This runs a hook to allow extensions placing their stuff after content
+        * and article metadata (e.g. categories).
+        * Note: This function has nothing to do with afterContent().
+        *
+        * This hook is placed here in order to allow using the same hook for all
+        * skins, both the SkinTemplate based ones and the older ones, which directly
+        * use this class to get their data.
+        *
+        * The output of this function gets processed in SkinTemplate::outputPage() for
+        * the SkinTemplate based skins, all other skins should directly echo it.
+        *
+        * @return string Empty by default, if not changed by any hook function.
+        */
+       protected function afterContentHook() {
+               $data = '';
+
+               if ( Hooks::run( 'SkinAfterContent', [ &$data, $this ] ) ) {
+                       // adding just some spaces shouldn't toggle the output
+                       // of the whole <div/>, so we use trim() here
+                       if ( trim( $data ) != '' ) {
+                               // Doing this here instead of in the skins to
+                               // ensure that the div has the same ID in all
+                               // skins
+                               $data = "<div id='mw-data-after-content'>\n" .
+                                       "\t$data\n" .
+                                       "</div>\n";
+                       }
+               } else {
+                       wfDebug( "Hook SkinAfterContent changed output processing.\n" );
+               }
+
+               return $data;
+       }
+
+       /**
+        * Generate debug data HTML for displaying at the bottom of the main content
+        * area.
+        * @return string HTML containing debug data, if enabled (otherwise empty).
+        */
+       protected function generateDebugHTML() {
+               return MWDebug::getHTMLDebugLog();
+       }
+
+       /**
+        * This gets called shortly before the "</body>" tag.
+        *
+        * @return string HTML-wrapped JS code to be put before "</body>"
+        */
+       function bottomScripts() {
+               // TODO and the suckage continues. This function is really just a wrapper around
+               // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
+               // up at some point
+               $bottomScriptText = $this->getOutput()->getBottomScripts();
+               Hooks::run( 'SkinAfterBottomScripts', [ $this, &$bottomScriptText ] );
+
+               return $bottomScriptText;
+       }
+
+       /**
+        * Text with the permalink to the source page,
+        * usually shown on the footer of a printed page
+        *
+        * @return string HTML text with an URL
+        */
+       function printSource() {
+               $oldid = $this->getRevisionId();
+               if ( $oldid ) {
+                       $canonicalUrl = $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid );
+                       $url = htmlspecialchars( wfExpandIRI( $canonicalUrl ) );
+               } else {
+                       // oldid not available for non existing pages
+                       $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
+               }
+
+               return $this->msg( 'retrievedfrom' )
+                       ->rawParams( '<a dir="ltr" href="' . $url . '">' . $url . '</a>' )
+                       ->parse();
+       }
+
+       /**
+        * @return string HTML
+        */
+       function getUndeleteLink() {
+               $action = $this->getRequest()->getVal( 'action', 'view' );
+
+               if ( $this->getTitle()->userCan( 'deletedhistory', $this->getUser() ) &&
+                       ( !$this->getTitle()->exists() || $action == 'history' ) ) {
+                       $n = $this->getTitle()->isDeleted();
+
+                       if ( $n ) {
+                               if ( $this->getTitle()->quickUserCan( 'undelete', $this->getUser() ) ) {
+                                       $msg = 'thisisdeleted';
+                               } else {
+                                       $msg = 'viewdeleted';
+                               }
+
+                               return $this->msg( $msg )->rawParams(
+                                       Linker::linkKnown(
+                                               SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
+                                               $this->msg( 'restorelink' )->numParams( $n )->escaped() )
+                                       )->escaped();
+                       }
+               }
+
+               return '';
+       }
+
+       /**
+        * @param OutputPage $out Defaults to $this->getOutput() if left as null
+        * @return string
+        */
+       function subPageSubtitle( $out = null ) {
+               if ( $out === null ) {
+                       $out = $this->getOutput();
+               }
+               $title = $out->getTitle();
+               $subpages = '';
+
+               if ( !Hooks::run( 'SkinSubPageSubtitle', [ &$subpages, $this, $out ] ) ) {
+                       return $subpages;
+               }
+
+               if ( $out->isArticle() && MWNamespace::hasSubpages( $title->getNamespace() ) ) {
+                       $ptext = $title->getPrefixedText();
+                       if ( strpos( $ptext, '/' ) !== false ) {
+                               $links = explode( '/', $ptext );
+                               array_pop( $links );
+                               $c = 0;
+                               $growinglink = '';
+                               $display = '';
+                               $lang = $this->getLanguage();
+
+                               foreach ( $links as $link ) {
+                                       $growinglink .= $link;
+                                       $display .= $link;
+                                       $linkObj = Title::newFromText( $growinglink );
+
+                                       if ( is_object( $linkObj ) && $linkObj->isKnown() ) {
+                                               $getlink = Linker::linkKnown(
+                                                       $linkObj,
+                                                       htmlspecialchars( $display )
+                                               );
+
+                                               $c++;
+
+                                               if ( $c > 1 ) {
+                                                       $subpages .= $lang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
+                                               } else {
+                                                       $subpages .= '&lt; ';
+                                               }
+
+                                               $subpages .= $getlink;
+                                               $display = '';
+                                       } else {
+                                               $display .= '/';
+                                       }
+                                       $growinglink .= '/';
+                               }
+                       }
+               }
+
+               return $subpages;
+       }
+
+       /**
+        * @deprecated since 1.27, feature removed
+        * @return bool Always false
+        */
+       function showIPinHeader() {
+               wfDeprecated( __METHOD__, '1.27' );
+               return false;
+       }
+
+       /**
+        * @return string
+        */
+       function getSearchLink() {
+               $searchPage = SpecialPage::getTitleFor( 'Search' );
+               return $searchPage->getLocalURL();
+       }
+
+       /**
+        * @return string
+        */
+       function escapeSearchLink() {
+               return htmlspecialchars( $this->getSearchLink() );
+       }
+
+       /**
+        * @param string $type
+        * @return string
+        */
+       function getCopyright( $type = 'detect' ) {
+               global $wgRightsPage, $wgRightsUrl, $wgRightsText;
+
+               if ( $type == 'detect' ) {
+                       if ( !$this->isRevisionCurrent()
+                               && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled()
+                       ) {
+                               $type = 'history';
+                       } else {
+                               $type = 'normal';
+                       }
+               }
+
+               if ( $type == 'history' ) {
+                       $msg = 'history_copyright';
+               } else {
+                       $msg = 'copyright';
+               }
+
+               if ( $wgRightsPage ) {
+                       $title = Title::newFromText( $wgRightsPage );
+                       $link = Linker::linkKnown( $title, $wgRightsText );
+               } elseif ( $wgRightsUrl ) {
+                       $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
+               } elseif ( $wgRightsText ) {
+                       $link = $wgRightsText;
+               } else {
+                       # Give up now
+                       return '';
+               }
+
+               // Allow for site and per-namespace customization of copyright notice.
+               // @todo Remove deprecated $forContent param from hook handlers and then remove here.
+               $forContent = true;
+
+               Hooks::run(
+                       'SkinCopyrightFooter',
+                       [ $this->getTitle(), $type, &$msg, &$link, &$forContent ]
+               );
+
+               return $this->msg( $msg )->rawParams( $link )->text();
+       }
+
+       /**
+        * @return null|string
+        */
+       function getCopyrightIcon() {
+               global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgFooterIcons;
+
+               $out = '';
+
+               if ( $wgFooterIcons['copyright']['copyright'] ) {
+                       $out = $wgFooterIcons['copyright']['copyright'];
+               } elseif ( $wgRightsIcon ) {
+                       $icon = htmlspecialchars( $wgRightsIcon );
+
+                       if ( $wgRightsUrl ) {
+                               $url = htmlspecialchars( $wgRightsUrl );
+                               $out .= '<a href="' . $url . '">';
+                       }
+
+                       $text = htmlspecialchars( $wgRightsText );
+                       $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
+
+                       if ( $wgRightsUrl ) {
+                               $out .= '</a>';
+                       }
+               }
+
+               return $out;
+       }
+
+       /**
+        * Gets the powered by MediaWiki icon.
+        * @return string
+        */
+       function getPoweredBy() {
+               global $wgResourceBasePath;
+
+               $url1 = htmlspecialchars(
+                       "$wgResourceBasePath/resources/assets/poweredby_mediawiki_88x31.png"
+               );
+               $url1_5 = htmlspecialchars(
+                       "$wgResourceBasePath/resources/assets/poweredby_mediawiki_132x47.png"
+               );
+               $url2 = htmlspecialchars(
+                       "$wgResourceBasePath/resources/assets/poweredby_mediawiki_176x62.png"
+               );
+               $text = '<a href="//www.mediawiki.org/"><img src="' . $url1
+                       . '" srcset="' . $url1_5 . ' 1.5x, ' . $url2 . ' 2x" '
+                       . 'height="31" width="88" alt="Powered by MediaWiki" /></a>';
+               Hooks::run( 'SkinGetPoweredBy', [ &$text, $this ] );
+               return $text;
+       }
+
+       /**
+        * Get the timestamp of the latest revision, formatted in user language
+        *
+        * @return string
+        */
+       protected function lastModified() {
+               $timestamp = $this->getOutput()->getRevisionTimestamp();
+
+               # No cached timestamp, load it from the database
+               if ( $timestamp === null ) {
+                       $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
+               }
+
+               if ( $timestamp ) {
+                       $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
+                       $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
+                       $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->parse();
+               } else {
+                       $s = '';
+               }
+
+               if ( wfGetLB()->getLaggedReplicaMode() ) {
+                       $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->parse() . '</strong>';
+               }
+
+               return $s;
+       }
+
+       /**
+        * @param string $align
+        * @return string
+        */
+       function logoText( $align = '' ) {
+               if ( $align != '' ) {
+                       $a = " style='float: {$align};'";
+               } else {
+                       $a = '';
+               }
+
+               $mp = $this->msg( 'mainpage' )->escaped();
+               $mptitle = Title::newMainPage();
+               $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
+
+               $logourl = $this->getLogo();
+               $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
+
+               return $s;
+       }
+
+       /**
+        * Renders a $wgFooterIcons icon according to the method's arguments
+        * @param array $icon The icon to build the html for, see $wgFooterIcons
+        *   for the format of this array.
+        * @param bool|string $withImage Whether to use the icon's image or output
+        *   a text-only footericon.
+        * @return string HTML
+        */
+       function makeFooterIcon( $icon, $withImage = 'withImage' ) {
+               if ( is_string( $icon ) ) {
+                       $html = $icon;
+               } else { // Assuming array
+                       $url = isset( $icon["url"] ) ? $icon["url"] : null;
+                       unset( $icon["url"] );
+                       if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
+                               // do this the lazy way, just pass icon data as an attribute array
+                               $html = Html::element( 'img', $icon );
+                       } else {
+                               $html = htmlspecialchars( $icon["alt"] );
+                       }
+                       if ( $url ) {
+                               global $wgExternalLinkTarget;
+                               $html = Html::rawElement( 'a',
+                                       [ "href" => $url, "target" => $wgExternalLinkTarget ],
+                                       $html );
+                       }
+               }
+               return $html;
+       }
+
+       /**
+        * Gets the link to the wiki's main page.
+        * @return string
+        */
+       function mainPageLink() {
+               $s = Linker::linkKnown(
+                       Title::newMainPage(),
+                       $this->msg( 'mainpage' )->escaped()
+               );
+
+               return $s;
+       }
+
+       /**
+        * Returns an HTML link for use in the footer
+        * @param string $desc The i18n message key for the link text
+        * @param string $page The i18n message key for the page to link to
+        * @return string HTML anchor
+        */
+       public function footerLink( $desc, $page ) {
+               $title = $this->footerLinkTitle( $desc, $page );
+               if ( !$title ) {
+                       return '';
+               }
+
+               return Linker::linkKnown(
+                       $title,
+                       $this->msg( $desc )->escaped()
+               );
+       }
+
+       /**
+        * @param string $desc
+        * @param string $page
+        * @return Title|null
+        */
+       private function footerLinkTitle( $desc, $page ) {
+               // If the link description has been set to "-" in the default language,
+               if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
+                       // then it is disabled, for all languages.
+                       return null;
+               }
+               // Otherwise, we display the link for the user, described in their
+               // language (which may or may not be the same as the default language),
+               // but we make the link target be the one site-wide page.
+               $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
+
+               return $title ?: null;
+       }
+
+       /**
+        * Gets the link to the wiki's privacy policy page.
+        * @return string HTML
+        */
+       function privacyLink() {
+               return $this->footerLink( 'privacy', 'privacypage' );
+       }
+
+       /**
+        * Gets the link to the wiki's about page.
+        * @return string HTML
+        */
+       function aboutLink() {
+               return $this->footerLink( 'aboutsite', 'aboutpage' );
+       }
+
+       /**
+        * Gets the link to the wiki's general disclaimers page.
+        * @return string HTML
+        */
+       function disclaimerLink() {
+               return $this->footerLink( 'disclaimers', 'disclaimerpage' );
+       }
+
+       /**
+        * Return URL options for the 'edit page' link.
+        * This may include an 'oldid' specifier, if the current page view is such.
+        *
+        * @return array
+        * @private
+        */
+       function editUrlOptions() {
+               $options = [ 'action' => 'edit' ];
+
+               if ( !$this->isRevisionCurrent() ) {
+                       $options['oldid'] = intval( $this->getRevisionId() );
+               }
+
+               return $options;
+       }
+
+       /**
+        * @param User|int $id
+        * @return bool
+        */
+       function showEmailUser( $id ) {
+               if ( $id instanceof User ) {
+                       $targetUser = $id;
+               } else {
+                       $targetUser = User::newFromId( $id );
+               }
+
+               # The sending user must have a confirmed email address and the receiving
+               # user must accept emails from the sender.
+               return $this->getUser()->canSendEmail()
+                       && SpecialEmailUser::validateTarget( $targetUser, $this->getUser() ) === '';
+       }
+
+       /**
+        * Return a fully resolved style path url to images or styles stored in the current skins's folder.
+        * This method returns a url resolved using the configured skin style path
+        * and includes the style version inside of the url.
+        *
+        * Requires $stylename to be set, otherwise throws MWException.
+        *
+        * @param string $name The name or path of a skin resource file
+        * @return string The fully resolved style path url including styleversion
+        * @throws MWException
+        */
+       function getSkinStylePath( $name ) {
+               global $wgStylePath, $wgStyleVersion;
+
+               if ( $this->stylename === null ) {
+                       $class = static::class;
+                       throw new MWException( "$class::\$stylename must be set to use getSkinStylePath()" );
+               }
+
+               return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
+       }
+
+       /* these are used extensively in SkinTemplate, but also some other places */
+
+       /**
+        * @param string $urlaction
+        * @return string
+        */
+       static function makeMainPageUrl( $urlaction = '' ) {
+               $title = Title::newMainPage();
+               self::checkTitle( $title, '' );
+
+               return $title->getLocalURL( $urlaction );
+       }
+
+       /**
+        * Make a URL for a Special Page using the given query and protocol.
+        *
+        * If $proto is set to null, make a local URL. Otherwise, make a full
+        * URL with the protocol specified.
+        *
+        * @param string $name Name of the Special page
+        * @param string $urlaction Query to append
+        * @param string|null $proto Protocol to use or null for a local URL
+        * @return string
+        */
+       static function makeSpecialUrl( $name, $urlaction = '', $proto = null ) {
+               $title = SpecialPage::getSafeTitleFor( $name );
+               if ( is_null( $proto ) ) {
+                       return $title->getLocalURL( $urlaction );
+               } else {
+                       return $title->getFullURL( $urlaction, false, $proto );
+               }
+       }
+
+       /**
+        * @param string $name
+        * @param string $subpage
+        * @param string $urlaction
+        * @return string
+        */
+       static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
+               $title = SpecialPage::getSafeTitleFor( $name, $subpage );
+               return $title->getLocalURL( $urlaction );
+       }
+
+       /**
+        * @param string $name
+        * @param string $urlaction
+        * @return string
+        */
+       static function makeI18nUrl( $name, $urlaction = '' ) {
+               $title = Title::newFromText( wfMessage( $name )->inContentLanguage()->text() );
+               self::checkTitle( $title, $name );
+               return $title->getLocalURL( $urlaction );
+       }
+
+       /**
+        * @param string $name
+        * @param string $urlaction
+        * @return string
+        */
+       static function makeUrl( $name, $urlaction = '' ) {
+               $title = Title::newFromText( $name );
+               self::checkTitle( $title, $name );
+
+               return $title->getLocalURL( $urlaction );
+       }
+
+       /**
+        * If url string starts with http, consider as external URL, else
+        * internal
+        * @param string $name
+        * @return string URL
+        */
+       static function makeInternalOrExternalUrl( $name ) {
+               if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $name ) ) {
+                       return $name;
+               } else {
+                       return self::makeUrl( $name );
+               }
+       }
+
+       /**
+        * this can be passed the NS number as defined in Language.php
+        * @param string $name
+        * @param string $urlaction
+        * @param int $namespace
+        * @return string
+        */
+       static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
+               $title = Title::makeTitleSafe( $namespace, $name );
+               self::checkTitle( $title, $name );
+
+               return $title->getLocalURL( $urlaction );
+       }
+
+       /**
+        * these return an array with the 'href' and boolean 'exists'
+        * @param string $name
+        * @param string $urlaction
+        * @return array
+        */
+       static function makeUrlDetails( $name, $urlaction = '' ) {
+               $title = Title::newFromText( $name );
+               self::checkTitle( $title, $name );
+
+               return [
+                       'href' => $title->getLocalURL( $urlaction ),
+                       'exists' => $title->isKnown(),
+               ];
+       }
+
+       /**
+        * Make URL details where the article exists (or at least it's convenient to think so)
+        * @param string $name Article name
+        * @param string $urlaction
+        * @return array
+        */
+       static function makeKnownUrlDetails( $name, $urlaction = '' ) {
+               $title = Title::newFromText( $name );
+               self::checkTitle( $title, $name );
+
+               return [
+                       'href' => $title->getLocalURL( $urlaction ),
+                       'exists' => true
+               ];
+       }
+
+       /**
+        * make sure we have some title to operate on
+        *
+        * @param Title &$title
+        * @param string $name
+        */
+       static function checkTitle( &$title, $name ) {
+               if ( !is_object( $title ) ) {
+                       $title = Title::newFromText( $name );
+                       if ( !is_object( $title ) ) {
+                               $title = Title::newFromText( '--error: link target missing--' );
+                       }
+               }
+       }
+
+       /**
+        * Build an array that represents the sidebar(s), the navigation bar among them.
+        *
+        * BaseTemplate::getSidebar can be used to simplify the format and id generation in new skins.
+        *
+        * The format of the returned array is [ heading => content, ... ], where:
+        * - heading is the heading of a navigation portlet. It is either:
+        *   - magic string to be handled by the skins ('SEARCH' / 'LANGUAGES' / 'TOOLBOX' / ...)
+        *   - a message name (e.g. 'navigation'), the message should be HTML-escaped by the skin
+        *   - plain text, which should be HTML-escaped by the skin
+        * - content is the contents of the portlet. It is either:
+        *   - HTML text (<ul><li>...</li>...</ul>)
+        *   - array of link data in a format accepted by BaseTemplate::makeListItem()
+        *   - (for a magic string as a key, any value)
+        *
+        * Note that extensions can control the sidebar contents using the SkinBuildSidebar hook
+        * and can technically insert anything in here; skin creators are expected to handle
+        * values described above.
+        *
+        * @return array
+        */
+       function buildSidebar() {
+               global $wgEnableSidebarCache, $wgSidebarCacheExpiry;
+
+               $callback = function () {
+                       $bar = [];
+                       $this->addToSidebar( $bar, 'sidebar' );
+                       Hooks::run( 'SkinBuildSidebar', [ $this, &$bar ] );
+
+                       return $bar;
+               };
+
+               if ( $wgEnableSidebarCache ) {
+                       $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
+                       $sidebar = $cache->getWithSetCallback(
+                               $cache->makeKey( 'sidebar', $this->getLanguage()->getCode() ),
+                               MessageCache::singleton()->isDisabled()
+                                       ? $cache::TTL_UNCACHEABLE // bug T133069
+                                       : $wgSidebarCacheExpiry,
+                               $callback,
+                               [ 'lockTSE' => 30 ]
+                       );
+               } else {
+                       $sidebar = $callback();
+               }
+
+               // Apply post-processing to the cached value
+               Hooks::run( 'SidebarBeforeOutput', [ $this, &$sidebar ] );
+
+               return $sidebar;
+       }
+
+       /**
+        * Add content from a sidebar system message
+        * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
+        *
+        * This is just a wrapper around addToSidebarPlain() for backwards compatibility
+        *
+        * @param array &$bar
+        * @param string $message
+        */
+       public function addToSidebar( &$bar, $message ) {
+               $this->addToSidebarPlain( $bar, wfMessage( $message )->inContentLanguage()->plain() );
+       }
+
+       /**
+        * Add content from plain text
+        * @since 1.17
+        * @param array &$bar
+        * @param string $text
+        * @return array
+        */
+       function addToSidebarPlain( &$bar, $text ) {
+               $lines = explode( "\n", $text );
+
+               $heading = '';
+               $messageTitle = $this->getConfig()->get( 'EnableSidebarCache' )
+                       ? Title::newMainPage() : $this->getTitle();
+
+               foreach ( $lines as $line ) {
+                       if ( strpos( $line, '*' ) !== 0 ) {
+                               continue;
+                       }
+                       $line = rtrim( $line, "\r" ); // for Windows compat
+
+                       if ( strpos( $line, '**' ) !== 0 ) {
+                               $heading = trim( $line, '* ' );
+                               if ( !array_key_exists( $heading, $bar ) ) {
+                                       $bar[$heading] = [];
+                               }
+                       } else {
+                               $line = trim( $line, '* ' );
+
+                               if ( strpos( $line, '|' ) !== false ) { // sanity check
+                                       $line = MessageCache::singleton()->transform( $line, false, null, $messageTitle );
+                                       $line = array_map( 'trim', explode( '|', $line, 2 ) );
+                                       if ( count( $line ) !== 2 ) {
+                                               // Second sanity check, could be hit by people doing
+                                               // funky stuff with parserfuncs... (T35321)
+                                               continue;
+                                       }
+
+                                       $extraAttribs = [];
+
+                                       $msgLink = $this->msg( $line[0] )->title( $messageTitle )->inContentLanguage();
+                                       if ( $msgLink->exists() ) {
+                                               $link = $msgLink->text();
+                                               if ( $link == '-' ) {
+                                                       continue;
+                                               }
+                                       } else {
+                                               $link = $line[0];
+                                       }
+                                       $msgText = $this->msg( $line[1] )->title( $messageTitle );
+                                       if ( $msgText->exists() ) {
+                                               $text = $msgText->text();
+                                       } else {
+                                               $text = $line[1];
+                                       }
+
+                                       if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $link ) ) {
+                                               $href = $link;
+
+                                               // Parser::getExternalLinkAttribs won't work here because of the Namespace things
+                                               global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
+                                               if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
+                                                       $extraAttribs['rel'] = 'nofollow';
+                                               }
+
+                                               global $wgExternalLinkTarget;
+                                               if ( $wgExternalLinkTarget ) {
+                                                       $extraAttribs['target'] = $wgExternalLinkTarget;
+                                               }
+                                       } else {
+                                               $title = Title::newFromText( $link );
+
+                                               if ( $title ) {
+                                                       $title = $title->fixSpecialName();
+                                                       $href = $title->getLinkURL();
+                                               } else {
+                                                       $href = 'INVALID-TITLE';
+                                               }
+                                       }
+
+                                       $bar[$heading][] = array_merge( [
+                                               'text' => $text,
+                                               'href' => $href,
+                                               'id' => Sanitizer::escapeIdForAttribute( 'n-' . strtr( $line[1], ' ', '-' ) ),
+                                               'active' => false,
+                                       ], $extraAttribs );
+                               } else {
+                                       continue;
+                               }
+                       }
+               }
+
+               return $bar;
+       }
+
+       /**
+        * Gets new talk page messages for the current user and returns an
+        * appropriate alert message (or an empty string if there are no messages)
+        * @return string
+        */
+       function getNewtalks() {
+               $newMessagesAlert = '';
+               $user = $this->getUser();
+               $newtalks = $user->getNewMessageLinks();
+               $out = $this->getOutput();
+
+               // Allow extensions to disable or modify the new messages alert
+               if ( !Hooks::run( 'GetNewMessagesAlert', [ &$newMessagesAlert, $newtalks, $user, $out ] ) ) {
+                       return '';
+               }
+               if ( $newMessagesAlert ) {
+                       return $newMessagesAlert;
+               }
+
+               if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
+                       $uTalkTitle = $user->getTalkPage();
+                       $lastSeenRev = isset( $newtalks[0]['rev'] ) ? $newtalks[0]['rev'] : null;
+                       $nofAuthors = 0;
+                       if ( $lastSeenRev !== null ) {
+                               $plural = true; // Default if we have a last seen revision: if unknown, use plural
+                               $latestRev = Revision::newFromTitle( $uTalkTitle, false, Revision::READ_NORMAL );
+                               if ( $latestRev !== null ) {
+                                       // Singular if only 1 unseen revision, plural if several unseen revisions.
+                                       $plural = $latestRev->getParentId() !== $lastSeenRev->getId();
+                                       $nofAuthors = $uTalkTitle->countAuthorsBetween(
+                                               $lastSeenRev, $latestRev, 10, 'include_new' );
+                               }
+                       } else {
+                               // Singular if no revision -> diff link will show latest change only in any case
+                               $plural = false;
+                       }
+                       $plural = $plural ? 999 : 1;
+                       // 999 signifies "more than one revision". We don't know how many, and even if we did,
+                       // the number of revisions or authors is not necessarily the same as the number of
+                       // "messages".
+                       $newMessagesLink = Linker::linkKnown(
+                               $uTalkTitle,
+                               $this->msg( 'newmessageslinkplural' )->params( $plural )->escaped(),
+                               [],
+                               [ 'redirect' => 'no' ]
+                       );
+
+                       $newMessagesDiffLink = Linker::linkKnown(
+                               $uTalkTitle,
+                               $this->msg( 'newmessagesdifflinkplural' )->params( $plural )->escaped(),
+                               [],
+                               $lastSeenRev !== null
+                                       ? [ 'oldid' => $lastSeenRev->getId(), 'diff' => 'cur' ]
+                                       : [ 'diff' => 'cur' ]
+                       );
+
+                       if ( $nofAuthors >= 1 && $nofAuthors <= 10 ) {
+                               $newMessagesAlert = $this->msg(
+                                       'youhavenewmessagesfromusers',
+                                       $newMessagesLink,
+                                       $newMessagesDiffLink
+                               )->numParams( $nofAuthors, $plural );
+                       } else {
+                               // $nofAuthors === 11 signifies "11 or more" ("more than 10")
+                               $newMessagesAlert = $this->msg(
+                                       $nofAuthors > 10 ? 'youhavenewmessagesmanyusers' : 'youhavenewmessages',
+                                       $newMessagesLink,
+                                       $newMessagesDiffLink
+                               )->numParams( $plural );
+                       }
+                       $newMessagesAlert = $newMessagesAlert->text();
+                       # Disable CDN cache
+                       $out->setCdnMaxage( 0 );
+               } elseif ( count( $newtalks ) ) {
+                       $sep = $this->msg( 'newtalkseparator' )->escaped();
+                       $msgs = [];
+
+                       foreach ( $newtalks as $newtalk ) {
+                               $msgs[] = Xml::element(
+                                       'a',
+                                       [ 'href' => $newtalk['link'] ], $newtalk['wiki']
+                               );
+                       }
+                       $parts = implode( $sep, $msgs );
+                       $newMessagesAlert = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
+                       $out->setCdnMaxage( 0 );
+               }
+
+               return $newMessagesAlert;
+       }
+
+       /**
+        * Get a cached notice
+        *
+        * @param string $name Message name, or 'default' for $wgSiteNotice
+        * @return string|bool HTML fragment, or false to indicate that the caller
+        *   should fall back to the next notice in its sequence
+        */
+       private function getCachedNotice( $name ) {
+               global $wgRenderHashAppend, $wgContLang;
+
+               $needParse = false;
+
+               if ( $name === 'default' ) {
+                       // special case
+                       global $wgSiteNotice;
+                       $notice = $wgSiteNotice;
+                       if ( empty( $notice ) ) {
+                               return false;
+                       }
+               } else {
+                       $msg = $this->msg( $name )->inContentLanguage();
+                       if ( $msg->isBlank() ) {
+                               return '';
+                       } elseif ( $msg->isDisabled() ) {
+                               return false;
+                       }
+                       $notice = $msg->plain();
+               }
+
+               $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
+               $parsed = $cache->getWithSetCallback(
+                       // Use the extra hash appender to let eg SSL variants separately cache
+                       // Key is verified with md5 hash of unparsed wikitext
+                       $cache->makeKey( $name, $wgRenderHashAppend, md5( $notice ) ),
+                       // TTL in seconds
+                       600,
+                       function () use ( $notice ) {
+                               return $this->getOutput()->parse( $notice );
+                       }
+               );
+
+               return Html::rawElement(
+                       'div',
+                       [
+                               'id' => 'localNotice',
+                               'lang' => $wgContLang->getHtmlCode(),
+                               'dir' => $wgContLang->getDir()
+                       ],
+                       $parsed
+               );
+       }
+
+       /**
+        * Get the site notice
+        *
+        * @return string HTML fragment
+        */
+       function getSiteNotice() {
+               $siteNotice = '';
+
+               if ( Hooks::run( 'SiteNoticeBefore', [ &$siteNotice, $this ] ) ) {
+                       if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
+                               $siteNotice = $this->getCachedNotice( 'sitenotice' );
+                       } else {
+                               $anonNotice = $this->getCachedNotice( 'anonnotice' );
+                               if ( $anonNotice === false ) {
+                                       $siteNotice = $this->getCachedNotice( 'sitenotice' );
+                               } else {
+                                       $siteNotice = $anonNotice;
+                               }
+                       }
+                       if ( $siteNotice === false ) {
+                               $siteNotice = $this->getCachedNotice( 'default' );
+                       }
+               }
+
+               Hooks::run( 'SiteNoticeAfter', [ &$siteNotice, $this ] );
+               return $siteNotice;
+       }
+
+       /**
+        * Create a section edit link.  This supersedes editSectionLink() and
+        * editSectionLinkForOther().
+        *
+        * @param Title $nt The title being linked to (may not be the same as
+        *   the current page, if the section is included from a template)
+        * @param string $section The designation of the section being pointed to,
+        *   to be included in the link, like "&section=$section"
+        * @param string $tooltip The tooltip to use for the link: will be escaped
+        *   and wrapped in the 'editsectionhint' message
+        * @param string $lang Language code
+        * @return string HTML to use for edit link
+        */
+       public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
+               // HTML generated here should probably have userlangattributes
+               // added to it for LTR text on RTL pages
+
+               $lang = wfGetLangObj( $lang );
+
+               $attribs = [];
+               if ( !is_null( $tooltip ) ) {
+                       $attribs['title'] = wfMessage( 'editsectionhint' )->rawParams( $tooltip )
+                               ->inLanguage( $lang )->text();
+               }
+
+               $links = [
+                       'editsection' => [
+                               'text' => wfMessage( 'editsection' )->inLanguage( $lang )->escaped(),
+                               'targetTitle' => $nt,
+                               'attribs' => $attribs,
+                               'query' => [ 'action' => 'edit', 'section' => $section ],
+                               'options' => [ 'noclasses', 'known' ]
+                       ]
+               ];
+
+               Hooks::run( 'SkinEditSectionLinks', [ $this, $nt, $section, $tooltip, &$links, $lang ] );
+
+               $result = '<span class="mw-editsection"><span class="mw-editsection-bracket">[</span>';
+
+               $linksHtml = [];
+               foreach ( $links as $k => $linkDetails ) {
+                       $linksHtml[] = Linker::link(
+                               $linkDetails['targetTitle'],
+                               $linkDetails['text'],
+                               $linkDetails['attribs'],
+                               $linkDetails['query'],
+                               $linkDetails['options']
+                       );
+               }
+
+               $result .= implode(
+                       '<span class="mw-editsection-divider">'
+                               . wfMessage( 'pipe-separator' )->inLanguage( $lang )->escaped()
+                               . '</span>',
+                       $linksHtml
+               );
+
+               $result .= '<span class="mw-editsection-bracket">]</span></span>';
+               // Deprecated, use SkinEditSectionLinks hook instead
+               Hooks::run(
+                       'DoEditSectionLink',
+                       [ $this, $nt, $section, $tooltip, &$result, $lang ],
+                       '1.25'
+               );
+               return $result;
+       }
+
+}