includes/skins/Skin.php

   1 <?php
   2 /**
   3  * Base class for all skins.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 use MediaWiki\MediaWikiServices;
  24 use Wikimedia\WrappedString;
  25 use Wikimedia\WrappedStringList;
  26
  27 /**
  28  * @defgroup Skins Skins
  29  */
  30
  31 /**
  32  * The main skin class which provides methods and properties for all other skins.
  33  *
  34  * See docs/skin.txt for more information.
  35  *
  36  * @ingroup Skins
  37  */
  38 abstract class Skin extends ContextSource {
  39         /**
  40          * @var string|null
  41          */
  42         protected $skinname = null;
  43
  44         protected $mRelevantTitle = null;
  45         protected $mRelevantUser = null;
  46
  47         /**
  48          * @var string Stylesheets set to use. Subdirectory in skins/ where various stylesheets are
  49          *   located. Only needs to be set if you intend to use the getSkinStylePath() method.
  50          */
  51         public $stylename = null;
  52
  53         /**
  54          * Fetch the set of available skins.
  55          * @return array Associative array of strings
  56          */
  57         static function getSkinNames() {
  58                 $skinFactory = MediaWikiServices::getInstance()->getSkinFactory();
  59                 return $skinFactory->getSkinNames();
  60         }
  61
  62         /**
  63          * Fetch the skinname messages for available skins.
  64          * @return string[]
  65          */
  66         static function getSkinNameMessages() {
  67                 $messages = [];
  68                 foreach ( self::getSkinNames() as $skinKey => $skinName ) {
  69                         $messages[] = "skinname-$skinKey";
  70                 }
  71                 return $messages;
  72         }
  73
  74         /**
  75          * Fetch the list of user-selectable skins in regards to $wgSkipSkins.
  76          * Useful for Special:Preferences and other places where you
  77          * only want to show skins users _can_ use.
  78          * @return string[]
  79          * @since 1.23
  80          */
  81         public static function getAllowedSkins() {
  82                 global $wgSkipSkins;
  83
  84                 $allowedSkins = self::getSkinNames();
  85
  86                 foreach ( $wgSkipSkins as $skip ) {
  87                         unset( $allowedSkins[$skip] );
  88                 }
  89
  90                 return $allowedSkins;
  91         }
  92
  93         /**
  94          * Normalize a skin preference value to a form that can be loaded.
  95          *
  96          * If a skin can't be found, it will fall back to the configured default ($wgDefaultSkin), or the
  97          * hardcoded default ($wgFallbackSkin) if the default skin is unavailable too.
  98          *
  99          * @param string $key 'monobook', 'vector', etc.
 100          * @return string
 101          */
 102         static function normalizeKey( $key ) {
 103                 global $wgDefaultSkin, $wgFallbackSkin;
 104
 105                 $skinNames = self::getSkinNames();
 106
 107                 // Make keys lowercase for case-insensitive matching.
 108                 $skinNames = array_change_key_case( $skinNames, CASE_LOWER );
 109                 $key = strtolower( $key );
 110                 $defaultSkin = strtolower( $wgDefaultSkin );
 111                 $fallbackSkin = strtolower( $wgFallbackSkin );
 112
 113                 if ( $key == '' || $key == 'default' ) {
 114                         // Don't return the default immediately;
 115                         // in a misconfiguration we need to fall back.
 116                         $key = $defaultSkin;
 117                 }
 118
 119                 if ( isset( $skinNames[$key] ) ) {
 120                         return $key;
 121                 }
 122
 123                 // Older versions of the software used a numeric setting
 124                 // in the user preferences.
 125                 $fallback = [
 126                         0 => $defaultSkin,
 127                         2 => 'cologneblue'
 128                 ];
 129
 130                 if ( isset( $fallback[$key] ) ) {
 131                         $key = $fallback[$key];
 132                 }
 133
 134                 if ( isset( $skinNames[$key] ) ) {
 135                         return $key;
 136                 } elseif ( isset( $skinNames[$defaultSkin] ) ) {
 137                         return $defaultSkin;
 138                 } else {
 139                         return $fallbackSkin;
 140                 }
 141         }
 142
 143         /**
 144          * @since 1.31
 145          * @param string|null $skinname
 146          */
 147         public function __construct( $skinname = null ) {
 148                 if ( is_string( $skinname ) ) {
 149                         $this->skinname = $skinname;
 150                 }
 151         }
 152
 153         /**
 154          * @return string|null Skin name
 155          */
 156         public function getSkinName() {
 157                 return $this->skinname;
 158         }
 159
 160         /**
 161          * @param OutputPage $out
 162          */
 163         public function initPage( OutputPage $out ) {
 164                 $this->preloadExistence();
 165         }
 166
 167         /**
 168          * Defines the ResourceLoader modules that should be added to the skin
 169          * It is recommended that skins wishing to override call parent::getDefaultModules()
 170          * and substitute out any modules they wish to change by using a key to look them up
 171          *
 172          * Any modules defined with the 'styles' key will be added as render blocking CSS via
 173          * Output::addModuleStyles. Similarly, each key should refer to a list of modules
 174          *
 175          * @return array Array of modules with helper keys for easy overriding
 176          */
 177         public function getDefaultModules() {
 178                 $out = $this->getOutput();
 179                 $user = $this->getUser();
 180
 181                 // Modules declared in the $modules literal are loaded
 182                 // for ALL users, on ALL pages, in ALL skins.
 183                 // Keep this list as small as possible!
 184                 $modules = [
 185                         'styles' => [
 186                                 // The 'styles' key sets render-blocking style modules
 187                                 // Unlike other keys in $modules, this is an associative array
 188                                 // where each key is its own group pointing to a list of modules
 189                                 'core' => [
 190                                         'mediawiki.legacy.shared',
 191                                         'mediawiki.legacy.commonPrint',
 192                                 ],
 193                                 'content' => [],
 194                                 'syndicate' => [],
 195                         ],
 196                         'core' => [
 197                                 'site',
 198                                 'mediawiki.page.startup',
 199                         ],
 200                         // modules that enhance the content in some way
 201                         'content' => [
 202                                 'mediawiki.page.ready',
 203                         ],
 204                         // modules relating to search functionality
 205                         'search' => [
 206                                 'mediawiki.searchSuggest',
 207                         ],
 208                         // modules relating to functionality relating to watching an article
 209                         'watch' => [],
 210                         // modules which relate to the current users preferences
 211                         'user' => [],
 212                         // modules relating to RSS/Atom Feeds
 213                         'syndicate' => [],
 214                 ];
 215
 216                 // Preload jquery.tablesorter for mediawiki.page.ready
 217                 if ( strpos( $out->getHTML(), 'sortable' ) !== false ) {
 218                         $modules['content'][] = 'jquery.tablesorter';
 219                         $modules['styles']['content'][] = 'jquery.tablesorter.styles';
 220                 }
 221
 222                 // Preload jquery.makeCollapsible for mediawiki.page.ready
 223                 if ( strpos( $out->getHTML(), 'mw-collapsible' ) !== false ) {
 224                         $modules['content'][] = 'jquery.makeCollapsible';
 225                         $modules['styles']['content'][] = 'jquery.makeCollapsible.styles';
 226                 }
 227
 228                 // Deprecated since 1.26: Unconditional loading of mediawiki.ui.button
 229                 // on every page is deprecated. Express a dependency instead.
 230                 if ( strpos( $out->getHTML(), 'mw-ui-button' ) !== false ) {
 231                         $modules['styles']['content'][] = 'mediawiki.ui.button';
 232                 }
 233
 234                 if ( $out->isTOCEnabled() ) {
 235                         $modules['content'][] = 'mediawiki.toc';
 236                         $modules['styles']['content'][] = 'mediawiki.toc.styles';
 237                 }
 238
 239                 // Add various resources if required
 240                 if ( $user->isLoggedIn()
 241                         && $user->isAllowedAll( 'writeapi', 'viewmywatchlist', 'editmywatchlist' )
 242                         && $this->getRelevantTitle()->canExist()
 243                 ) {
 244                         $modules['watch'][] = 'mediawiki.page.watch.ajax';
 245                 }
 246
 247                 if ( $user->getBoolOption( 'editsectiononrightclick' ) ) {
 248                         $modules['user'][] = 'mediawiki.action.view.rightClickEdit';
 249                 }
 250
 251                 // Crazy edit-on-double-click stuff
 252                 if ( $out->isArticle() && $user->getOption( 'editondblclick' ) ) {
 253                         $modules['user'][] = 'mediawiki.action.view.dblClickEdit';
 254                 }
 255
 256                 if ( $out->isSyndicated() ) {
 257                         $modules['styles']['syndicate'][] = 'mediawiki.feedlink';
 258                 }
 259
 260                 return $modules;
 261         }
 262
 263         /**
 264          * Preload the existence of three commonly-requested pages in a single query
 265          */
 266         protected function preloadExistence() {
 267                 $titles = [];
 268
 269                 // User/talk link
 270                 $user = $this->getUser();
 271                 if ( $user->isLoggedIn() ) {
 272                         $titles[] = $user->getUserPage();
 273                         $titles[] = $user->getTalkPage();
 274                 }
 275
 276                 // Check, if the page can hold some kind of content, otherwise do nothing
 277                 $title = $this->getRelevantTitle();
 278                 if ( $title->canExist() ) {
 279                         if ( $title->isTalkPage() ) {
 280                                 $titles[] = $title->getSubjectPage();
 281                         } else {
 282                                 $titles[] = $title->getTalkPage();
 283                         }
 284                 }
 285
 286                 // Footer links (used by SkinTemplate::prepareQuickTemplate)
 287                 foreach ( [
 288                         $this->footerLinkTitle( 'privacy', 'privacypage' ),
 289                         $this->footerLinkTitle( 'aboutsite', 'aboutpage' ),
 290                         $this->footerLinkTitle( 'disclaimers', 'disclaimerpage' ),
 291                 ] as $title ) {
 292                         if ( $title ) {
 293                                 $titles[] = $title;
 294                         }
 295                 }
 296
 297                 Hooks::run( 'SkinPreloadExistence', [ &$titles, $this ] );
 298
 299                 if ( $titles ) {
 300                         $lb = new LinkBatch( $titles );
 301                         $lb->setCaller( __METHOD__ );
 302                         $lb->execute();
 303                 }
 304         }
 305
 306         /**
 307          * Get the current revision ID
 308          *
 309          * @return int
 310          */
 311         public function getRevisionId() {
 312                 return $this->getOutput()->getRevisionId();
 313         }
 314
 315         /**
 316          * Whether the revision displayed is the latest revision of the page
 317          *
 318          * @return bool
 319          */
 320         public function isRevisionCurrent() {
 321                 $revID = $this->getRevisionId();
 322                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 323         }
 324
 325         /**
 326          * Set the "relevant" title
 327          * @see self::getRelevantTitle()
 328          * @param Title $t
 329          */
 330         public function setRelevantTitle( $t ) {
 331                 $this->mRelevantTitle = $t;
 332         }
 333
 334         /**
 335          * Return the "relevant" title.
 336          * A "relevant" title is not necessarily the actual title of the page.
 337          * Special pages like Special:MovePage use set the page they are acting on
 338          * as their "relevant" title, this allows the skin system to display things
 339          * such as content tabs which belong to to that page instead of displaying
 340          * a basic special page tab which has almost no meaning.
 341          *
 342          * @return Title
 343          */
 344         public function getRelevantTitle() {
 345                 return $this->mRelevantTitle ?? $this->getTitle();
 346         }
 347
 348         /**
 349          * Set the "relevant" user
 350          * @see self::getRelevantUser()
 351          * @param User $u
 352          */
 353         public function setRelevantUser( $u ) {
 354                 $this->mRelevantUser = $u;
 355         }
 356
 357         /**
 358          * Return the "relevant" user.
 359          * A "relevant" user is similar to a relevant title. Special pages like
 360          * Special:Contributions mark the user which they are relevant to so that
 361          * things like the toolbox can display the information they usually are only
 362          * able to display on a user's userpage and talkpage.
 363          * @return User
 364          */
 365         public function getRelevantUser() {
 366                 if ( isset( $this->mRelevantUser ) ) {
 367                         return $this->mRelevantUser;
 368                 }
 369                 $title = $this->getRelevantTitle();
 370                 if ( $title->hasSubjectNamespace( NS_USER ) ) {
 371                         $rootUser = $title->getRootText();
 372                         if ( User::isIP( $rootUser ) ) {
 373                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 374                         } else {
 375                                 $user = User::newFromName( $rootUser, false );
 376
 377                                 if ( $user ) {
 378                                         $user->load( User::READ_NORMAL );
 379
 380                                         if ( $user->isLoggedIn() ) {
 381                                                 $this->mRelevantUser = $user;
 382                                         }
 383                                 }
 384                         }
 385                         return $this->mRelevantUser;
 386                 }
 387                 return null;
 388         }
 389
 390         /**
 391          * Outputs the HTML generated by other functions.
 392          */
 393         abstract function outputPage();
 394
 395         /**
 396          * @param array $data
 397          * @param string|null $nonce OutputPage::getCSPNonce()
 398          * @return string|WrappedString HTML
 399          */
 400         public static function makeVariablesScript( $data, $nonce = null ) {
 401                 if ( $data ) {
 402                         return ResourceLoader::makeInlineScript(
 403                                 ResourceLoader::makeConfigSetScript( $data ),
 404                                 $nonce
 405                         );
 406                 }
 407                 return '';
 408         }
 409
 410         /**
 411          * Get the query to generate a dynamic stylesheet
 412          *
 413          * @deprecated since 1.32 Use action=raw&ctype=text/css directly.
 414          * @return array
 415          */
 416         public static function getDynamicStylesheetQuery() {
 417                 return [
 418                                 'action' => 'raw',
 419                                 'ctype' => 'text/css',
 420                         ];
 421         }
 422
 423         /**
 424          * Hook point for adding style modules to OutputPage.
 425          *
 426          * @deprecated since 1.32 Use getDefaultModules() instead.
 427          * @param OutputPage $out Legacy parameter, identical to $this->getOutput()
 428          */
 429         public function setupSkinUserCss( OutputPage $out ) {
 430                 // Stub.
 431         }
 432
 433         /**
 434          * TODO: document
 435          * @param Title $title
 436          * @return string
 437          */
 438         function getPageClasses( $title ) {
 439                 $numeric = 'ns-' . $title->getNamespace();
 440                 $user = $this->getUser();
 441
 442                 if ( $title->isSpecialPage() ) {
 443                         $type = 'ns-special';
 444                         // T25315: provide a class based on the canonical special page name without subpages
 445                         list( $canonicalName ) = MediaWikiServices::getInstance()->getSpecialPageFactory()->
 446                                 resolveAlias( $title->getDBkey() );
 447                         if ( $canonicalName ) {
 448                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 449                         } else {
 450                                 $type .= ' mw-invalidspecialpage';
 451                         }
 452                 } else {
 453                         if ( $title->isTalkPage() ) {
 454                                 $type = 'ns-talk';
 455                         } else {
 456                                 $type = 'ns-subject';
 457                         }
 458                         // T208315: add HTML class when the user can edit the page
 459                         if ( $title->quickUserCan( 'edit', $user ) ) {
 460                                 $type .= ' mw-editable';
 461                         }
 462                 }
 463
 464                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 465                 $root = Sanitizer::escapeClass( 'rootpage-' . $title->getRootTitle()->getPrefixedText() );
 466
 467                 return "$numeric $type $name $root";
 468         }
 469
 470         /**
 471          * Return values for <html> element
 472          * @return array Array of associative name-to-value elements for <html> element
 473          */
 474         public function getHtmlElementAttributes() {
 475                 $lang = $this->getLanguage();
 476                 return [
 477                         'lang' => $lang->getHtmlCode(),
 478                         'dir' => $lang->getDir(),
 479                         'class' => 'client-nojs',
 480                 ];
 481         }
 482
 483         /**
 484          * This will be called by OutputPage::headElement when it is creating the
 485          * "<body>" tag, skins can override it if they have a need to add in any
 486          * body attributes or classes of their own.
 487          * @param OutputPage $out
 488          * @param array &$bodyAttrs
 489          */
 490         function addToBodyAttributes( $out, &$bodyAttrs ) {
 491                 // does nothing by default
 492         }
 493
 494         /**
 495          * URL to the logo
 496          * @return string
 497          */
 498         function getLogo() {
 499                 return $this->getConfig()->get( 'Logo' );
 500         }
 501
 502         /**
 503          * Whether the logo should be preloaded with an HTTP link header or not
 504          *
 505          * @deprecated since 1.32 Redundant. It now happens automatically based on whether
 506          *  the skin loads a stylesheet based on ResourceLoaderSkinModule, which all
 507          *  skins that use wgLogo in CSS do, and other's would not.
 508          * @since 1.29
 509          * @return bool
 510          */
 511         public function shouldPreloadLogo() {
 512                 return false;
 513         }
 514
 515         /**
 516          * @return string HTML
 517          */
 518         function getCategoryLinks() {
 519                 $out = $this->getOutput();
 520                 $allCats = $out->getCategoryLinks();
 521                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 522
 523                 if ( $allCats === [] ) {
 524                         return '';
 525                 }
 526
 527                 $embed = "<li>";
 528                 $pop = "</li>";
 529
 530                 $s = '';
 531                 $colon = $this->msg( 'colon-separator' )->escaped();
 532
 533                 if ( !empty( $allCats['normal'] ) ) {
 534                         $t = $embed . implode( $pop . $embed, $allCats['normal'] ) . $pop;
 535
 536                         $msg = $this->msg( 'pagecategories' )->numParams( count( $allCats['normal'] ) );
 537                         $linkPage = $this->msg( 'pagecategorieslink' )->inContentLanguage()->text();
 538                         $title = Title::newFromText( $linkPage );
 539                         $link = $title ? $linkRenderer->makeLink( $title, $msg->text() ) : $msg->escaped();
 540                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 541                                 $link . $colon . '<ul>' . $t . '</ul></div>';
 542                 }
 543
 544                 # Hidden categories
 545                 if ( isset( $allCats['hidden'] ) ) {
 546                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 547                                 $class = ' mw-hidden-cats-user-shown';
 548                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 549                                 $class = ' mw-hidden-cats-ns-shown';
 550                         } else {
 551                                 $class = ' mw-hidden-cats-hidden';
 552                         }
 553
 554                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 555                                 $this->msg( 'hidden-categories' )->numParams( count( $allCats['hidden'] ) )->escaped() .
 556                                 $colon . '<ul>' . $embed . implode( $pop . $embed, $allCats['hidden'] ) . $pop . '</ul>' .
 557                                 '</div>';
 558                 }
 559
 560                 # optional 'dmoz-like' category browser. Will be shown under the list
 561                 # of categories an article belong to
 562                 if ( $this->getConfig()->get( 'UseCategoryBrowser' ) ) {
 563                         $s .= '<br /><hr />';
 564
 565                         # get a big array of the parents tree
 566                         $parenttree = $this->getTitle()->getParentCategoryTree();
 567                         # Skin object passed by reference cause it can not be
 568                         # accessed under the method subfunction drawCategoryBrowser
 569                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 570                         # Clean out bogus first entry and sort them
 571                         unset( $tempout[0] );
 572                         asort( $tempout );
 573                         # Output one per line
 574                         $s .= implode( "<br />\n", $tempout );
 575                 }
 576
 577                 return $s;
 578         }
 579
 580         /**
 581          * Render the array as a series of links.
 582          * @param array $tree Categories tree returned by Title::getParentCategoryTree
 583          * @return string Separated by &gt;, terminate with "\n"
 584          */
 585         function drawCategoryBrowser( $tree ) {
 586                 $return = '';
 587                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 588
 589                 foreach ( $tree as $element => $parent ) {
 590                         if ( empty( $parent ) ) {
 591                                 # element start a new list
 592                                 $return .= "\n";
 593                         } else {
 594                                 # grab the others elements
 595                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 596                         }
 597
 598                         # add our current element to the list
 599                         $eltitle = Title::newFromText( $element );
 600                         $return .= $linkRenderer->makeLink( $eltitle, $eltitle->getText() );
 601                 }
 602
 603                 return $return;
 604         }
 605
 606         /**
 607          * @return string HTML
 608          */
 609         function getCategories() {
 610                 $out = $this->getOutput();
 611                 $catlinks = $this->getCategoryLinks();
 612
 613                 // Check what we're showing
 614                 $allCats = $out->getCategoryLinks();
 615                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 616                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 617
 618                 $classes = [ 'catlinks' ];
 619                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 620                         $classes[] = 'catlinks-allhidden';
 621                 }
 622
 623                 return Html::rawElement(
 624                         'div',
 625                         [ 'id' => 'catlinks', 'class' => $classes, 'data-mw' => 'interface' ],
 626                         $catlinks
 627                 );
 628         }
 629
 630         /**
 631          * This runs a hook to allow extensions placing their stuff after content
 632          * and article metadata (e.g. categories).
 633          * Note: This function has nothing to do with afterContent().
 634          *
 635          * This hook is placed here in order to allow using the same hook for all
 636          * skins, both the SkinTemplate based ones and the older ones, which directly
 637          * use this class to get their data.
 638          *
 639          * The output of this function gets processed in SkinTemplate::outputPage() for
 640          * the SkinTemplate based skins, all other skins should directly echo it.
 641          *
 642          * @return string Empty by default, if not changed by any hook function.
 643          */
 644         protected function afterContentHook() {
 645                 $data = '';
 646
 647                 if ( Hooks::run( 'SkinAfterContent', [ &$data, $this ] ) ) {
 648                         // adding just some spaces shouldn't toggle the output
 649                         // of the whole <div/>, so we use trim() here
 650                         if ( trim( $data ) != '' ) {
 651                                 // Doing this here instead of in the skins to
 652                                 // ensure that the div has the same ID in all
 653                                 // skins
 654                                 $data = "<div id='mw-data-after-content'>\n" .
 655                                         "\t$data\n" .
 656                                         "</div>\n";
 657                         }
 658                 } else {
 659                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 660                 }
 661
 662                 return $data;
 663         }
 664
 665         /**
 666          * Generate debug data HTML for displaying at the bottom of the main content
 667          * area.
 668          * @return string HTML containing debug data, if enabled (otherwise empty).
 669          */
 670         protected function generateDebugHTML() {
 671                 return MWDebug::getHTMLDebugLog();
 672         }
 673
 674         /**
 675          * This gets called shortly before the "</body>" tag.
 676          *
 677          * @return string|WrappedStringList HTML containing scripts to put before `</body>`
 678          */
 679         function bottomScripts() {
 680                 // TODO and the suckage continues. This function is really just a wrapper around
 681                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 682                 // up at some point
 683                 $chunks = [ $this->getOutput()->getBottomScripts() ];
 684
 685                 // Keep the hook appendage separate to preserve WrappedString objects.
 686                 // This enables BaseTemplate::getTrail() to merge them where possible.
 687                 $extraHtml = '';
 688                 Hooks::run( 'SkinAfterBottomScripts', [ $this, &$extraHtml ] );
 689                 if ( $extraHtml !== '' ) {
 690                         $chunks[] = $extraHtml;
 691                 }
 692                 return WrappedString::join( "\n", $chunks );
 693         }
 694
 695         /**
 696          * Text with the permalink to the source page,
 697          * usually shown on the footer of a printed page
 698          *
 699          * @return string HTML text with an URL
 700          */
 701         function printSource() {
 702                 $oldid = $this->getRevisionId();
 703                 if ( $oldid ) {
 704                         $canonicalUrl = $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid );
 705                         $url = htmlspecialchars( wfExpandIRI( $canonicalUrl ) );
 706                 } else {
 707                         // oldid not available for non existing pages
 708                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
 709                 }
 710
 711                 return $this->msg( 'retrievedfrom' )
 712                         ->rawParams( '<a dir="ltr" href="' . $url . '">' . $url . '</a>' )
 713                         ->parse();
 714         }
 715
 716         /**
 717          * @return string HTML
 718          */
 719         function getUndeleteLink() {
 720                 $action = $this->getRequest()->getVal( 'action', 'view' );
 721                 $title = $this->getTitle();
 722                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 723
 724                 if ( ( !$title->exists() || $action == 'history' ) &&
 725                         $title->quickUserCan( 'deletedhistory', $this->getUser() )
 726                 ) {
 727                         $n = $title->isDeleted();
 728
 729                         if ( $n ) {
 730                                 if ( $this->getTitle()->quickUserCan( 'undelete', $this->getUser() ) ) {
 731                                         $msg = 'thisisdeleted';
 732                                 } else {
 733                                         $msg = 'viewdeleted';
 734                                 }
 735
 736                                 return $this->msg( $msg )->rawParams(
 737                                         $linkRenderer->makeKnownLink(
 738                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 739                                                 $this->msg( 'restorelink' )->numParams( $n )->text() )
 740                                         )->escaped();
 741                         }
 742                 }
 743
 744                 return '';
 745         }
 746
 747         /**
 748          * @param OutputPage|null $out Defaults to $this->getOutput() if left as null
 749          * @return string
 750          */
 751         function subPageSubtitle( $out = null ) {
 752                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 753                 if ( $out === null ) {
 754                         $out = $this->getOutput();
 755                 }
 756                 $title = $out->getTitle();
 757                 $subpages = '';
 758
 759                 if ( !Hooks::run( 'SkinSubPageSubtitle', [ &$subpages, $this, $out ] ) ) {
 760                         return $subpages;
 761                 }
 762
 763                 if (
 764                         $out->isArticle() && MediaWikiServices::getInstance()->getNamespaceInfo()->
 765                                 hasSubpages( $title->getNamespace() )
 766                 ) {
 767                         $ptext = $title->getPrefixedText();
 768                         if ( strpos( $ptext, '/' ) !== false ) {
 769                                 $links = explode( '/', $ptext );
 770                                 array_pop( $links );
 771                                 $c = 0;
 772                                 $growinglink = '';
 773                                 $display = '';
 774                                 $lang = $this->getLanguage();
 775
 776                                 foreach ( $links as $link ) {
 777                                         $growinglink .= $link;
 778                                         $display .= $link;
 779                                         $linkObj = Title::newFromText( $growinglink );
 780
 781                                         if ( is_object( $linkObj ) && $linkObj->isKnown() ) {
 782                                                 $getlink = $linkRenderer->makeKnownLink(
 783                                                         $linkObj, $display
 784                                                 );
 785
 786                                                 $c++;
 787
 788                                                 if ( $c > 1 ) {
 789                                                         $subpages .= $lang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
 790                                                 } else {
 791                                                         $subpages .= '&lt; ';
 792                                                 }
 793
 794                                                 $subpages .= $getlink;
 795                                                 $display = '';
 796                                         } else {
 797                                                 $display .= '/';
 798                                         }
 799                                         $growinglink .= '/';
 800                                 }
 801                         }
 802                 }
 803
 804                 return $subpages;
 805         }
 806
 807         /**
 808          * @return string
 809          */
 810         function getSearchLink() {
 811                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 812                 return $searchPage->getLocalURL();
 813         }
 814
 815         /**
 816          * @deprecated since 1.34, use getSearchLink() instead.
 817          * @return string
 818          */
 819         function escapeSearchLink() {
 820                 wfDeprecated( __METHOD__, '1.34' );
 821                 return htmlspecialchars( $this->getSearchLink() );
 822         }
 823
 824         /**
 825          * @param string $type
 826          * @return string
 827          */
 828         function getCopyright( $type = 'detect' ) {
 829                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 830                 if ( $type == 'detect' ) {
 831                         if ( !$this->isRevisionCurrent()
 832                                 && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled()
 833                         ) {
 834                                 $type = 'history';
 835                         } else {
 836                                 $type = 'normal';
 837                         }
 838                 }
 839
 840                 if ( $type == 'history' ) {
 841                         $msg = 'history_copyright';
 842                 } else {
 843                         $msg = 'copyright';
 844                 }
 845
 846                 $config = $this->getConfig();
 847
 848                 if ( $config->get( 'RightsPage' ) ) {
 849                         $title = Title::newFromText( $config->get( 'RightsPage' ) );
 850                         $link = $linkRenderer->makeKnownLink(
 851                                 $title, new HtmlArmor( $config->get( 'RightsText' ) )
 852                         );
 853                 } elseif ( $config->get( 'RightsUrl' ) ) {
 854                         $link = Linker::makeExternalLink( $config->get( 'RightsUrl' ), $config->get( 'RightsText' ) );
 855                 } elseif ( $config->get( 'RightsText' ) ) {
 856                         $link = $config->get( 'RightsText' );
 857                 } else {
 858                         # Give up now
 859                         return '';
 860                 }
 861
 862                 // Allow for site and per-namespace customization of copyright notice.
 863                 // @todo Remove deprecated $forContent param from hook handlers and then remove here.
 864                 $forContent = true;
 865
 866                 Hooks::run(
 867                         'SkinCopyrightFooter',
 868                         [ $this->getTitle(), $type, &$msg, &$link, &$forContent ]
 869                 );
 870
 871                 return $this->msg( $msg )->rawParams( $link )->text();
 872         }
 873
 874         /**
 875          * @return null|string
 876          */
 877         function getCopyrightIcon() {
 878                 $out = '';
 879                 $config = $this->getConfig();
 880
 881                 $footerIcons = $config->get( 'FooterIcons' );
 882                 if ( $footerIcons['copyright']['copyright'] ) {
 883                         $out = $footerIcons['copyright']['copyright'];
 884                 } elseif ( $config->get( 'RightsIcon' ) ) {
 885                         $icon = htmlspecialchars( $config->get( 'RightsIcon' ) );
 886                         $url = $config->get( 'RightsUrl' );
 887
 888                         if ( $url ) {
 889                                 $out .= '<a href="' . htmlspecialchars( $url ) . '">';
 890                         }
 891
 892                         $text = htmlspecialchars( $config->get( 'RightsText' ) );
 893                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 894
 895                         if ( $url ) {
 896                                 $out .= '</a>';
 897                         }
 898                 }
 899
 900                 return $out;
 901         }
 902
 903         /**
 904          * Gets the powered by MediaWiki icon.
 905          * @return string
 906          */
 907         function getPoweredBy() {
 908                 $resourceBasePath = $this->getConfig()->get( 'ResourceBasePath' );
 909                 $url1 = htmlspecialchars(
 910                         "$resourceBasePath/resources/assets/poweredby_mediawiki_88x31.png"
 911                 );
 912                 $url1_5 = htmlspecialchars(
 913                         "$resourceBasePath/resources/assets/poweredby_mediawiki_132x47.png"
 914                 );
 915                 $url2 = htmlspecialchars(
 916                         "$resourceBasePath/resources/assets/poweredby_mediawiki_176x62.png"
 917                 );
 918                 $text = '<a href="https://www.mediawiki.org/"><img src="' . $url1
 919                         . '" srcset="' . $url1_5 . ' 1.5x, ' . $url2 . ' 2x" '
 920                         . 'height="31" width="88" alt="Powered by MediaWiki" /></a>';
 921                 Hooks::run( 'SkinGetPoweredBy', [ &$text, $this ] );
 922                 return $text;
 923         }
 924
 925         /**
 926          * Get the timestamp of the latest revision, formatted in user language
 927          *
 928          * @return string
 929          */
 930         protected function lastModified() {
 931                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 932
 933                 # No cached timestamp, load it from the database
 934                 if ( $timestamp === null ) {
 935                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 936                 }
 937
 938                 if ( $timestamp ) {
 939                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 940                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 941                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->parse();
 942                 } else {
 943                         $s = '';
 944                 }
 945
 946                 if ( MediaWikiServices::getInstance()->getDBLoadBalancer()->getLaggedReplicaMode() ) {
 947                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->parse() . '</strong>';
 948                 }
 949
 950                 return $s;
 951         }
 952
 953         /**
 954          * @param string $align
 955          * @return string
 956          */
 957         function logoText( $align = '' ) {
 958                 if ( $align != '' ) {
 959                         $a = " style='float: {$align};'";
 960                 } else {
 961                         $a = '';
 962                 }
 963
 964                 $mp = $this->msg( 'mainpage' )->escaped();
 965                 $mptitle = Title::newMainPage();
 966                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 967
 968                 $logourl = $this->getLogo();
 969                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 970
 971                 return $s;
 972         }
 973
 974         /**
 975          * Renders a $wgFooterIcons icon according to the method's arguments
 976          * @param array $icon The icon to build the html for, see $wgFooterIcons
 977          *   for the format of this array.
 978          * @param bool|string $withImage Whether to use the icon's image or output
 979          *   a text-only footericon.
 980          * @return string HTML
 981          */
 982         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 983                 if ( is_string( $icon ) ) {
 984                         $html = $icon;
 985                 } else { // Assuming array
 986                         $url = $icon["url"] ?? null;
 987                         unset( $icon["url"] );
 988                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 989                                 // do this the lazy way, just pass icon data as an attribute array
 990                                 $html = Html::element( 'img', $icon );
 991                         } else {
 992                                 $html = htmlspecialchars( $icon["alt"] );
 993                         }
 994                         if ( $url ) {
 995                                 $html = Html::rawElement( 'a',
 996                                         [ "href" => $url, "target" => $this->getConfig()->get( 'ExternalLinkTarget' ) ],
 997                                         $html );
 998                         }
 999                 }
1000                 return $html;
1001         }
1002
1003         /**
1004          * Gets the link to the wiki's main page.
1005          * @return string
1006          */
1007         function mainPageLink() {
1008                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
1009                 $s = $linkRenderer->makeKnownLink(
1010                         Title::newMainPage(),
1011                         $this->msg( 'mainpage' )->text()
1012                 );
1013
1014                 return $s;
1015         }
1016
1017         /**
1018          * Returns an HTML link for use in the footer
1019          * @param string $desc The i18n message key for the link text
1020          * @param string $page The i18n message key for the page to link to
1021          * @return string HTML anchor
1022          */
1023         public function footerLink( $desc, $page ) {
1024                 $title = $this->footerLinkTitle( $desc, $page );
1025                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
1026                 if ( !$title ) {
1027                         return '';
1028                 }
1029
1030                 return $linkRenderer->makeKnownLink(
1031                         $title,
1032                         $this->msg( $desc )->text()
1033                 );
1034         }
1035
1036         /**
1037          * @param string $desc
1038          * @param string $page
1039          * @return Title|null
1040          */
1041         private function footerLinkTitle( $desc, $page ) {
1042                 // If the link description has been set to "-" in the default language,
1043                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
1044                         // then it is disabled, for all languages.
1045                         return null;
1046                 }
1047                 // Otherwise, we display the link for the user, described in their
1048                 // language (which may or may not be the same as the default language),
1049                 // but we make the link target be the one site-wide page.
1050                 $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
1051
1052                 return $title ?: null;
1053         }
1054
1055         /**
1056          * Gets the link to the wiki's privacy policy page.
1057          * @return string HTML
1058          */
1059         function privacyLink() {
1060                 return $this->footerLink( 'privacy', 'privacypage' );
1061         }
1062
1063         /**
1064          * Gets the link to the wiki's about page.
1065          * @return string HTML
1066          */
1067         function aboutLink() {
1068                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1069         }
1070
1071         /**
1072          * Gets the link to the wiki's general disclaimers page.
1073          * @return string HTML
1074          */
1075         function disclaimerLink() {
1076                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1077         }
1078
1079         /**
1080          * Return URL options for the 'edit page' link.
1081          * This may include an 'oldid' specifier, if the current page view is such.
1082          *
1083          * @return array
1084          * @private
1085          */
1086         function editUrlOptions() {
1087                 $options = [ 'action' => 'edit' ];
1088
1089                 if ( !$this->isRevisionCurrent() ) {
1090                         $options['oldid'] = intval( $this->getRevisionId() );
1091                 }
1092
1093                 return $options;
1094         }
1095
1096         /**
1097          * @param User|int $id
1098          * @return bool
1099          */
1100         function showEmailUser( $id ) {
1101                 if ( $id instanceof User ) {
1102                         $targetUser = $id;
1103                 } else {
1104                         $targetUser = User::newFromId( $id );
1105                 }
1106
1107                 # The sending user must have a confirmed email address and the receiving
1108                 # user must accept emails from the sender.
1109                 return $this->getUser()->canSendEmail()
1110                         && SpecialEmailUser::validateTarget( $targetUser, $this->getUser() ) === '';
1111         }
1112
1113         /**
1114          * Return a fully resolved style path URL to images or styles stored in the
1115          * current skin's folder. This method returns a URL resolved using the
1116          * configured skin style path.
1117          *
1118          * Requires $stylename to be set, otherwise throws MWException.
1119          *
1120          * @param string $name The name or path of a skin resource file
1121          * @return string The fully resolved style path URL
1122          * @throws MWException
1123          */
1124         function getSkinStylePath( $name ) {
1125                 if ( $this->stylename === null ) {
1126                         $class = static::class;
1127                         throw new MWException( "$class::\$stylename must be set to use getSkinStylePath()" );
1128                 }
1129
1130                 return $this->getConfig()->get( 'StylePath' ) . "/{$this->stylename}/$name";
1131         }
1132
1133         /* these are used extensively in SkinTemplate, but also some other places */
1134
1135         /**
1136          * @param string|string[] $urlaction
1137          * @return string
1138          */
1139         static function makeMainPageUrl( $urlaction = '' ) {
1140                 $title = Title::newMainPage();
1141                 self::checkTitle( $title, '' );
1142
1143                 return $title->getLinkURL( $urlaction );
1144         }
1145
1146         /**
1147          * Make a URL for a Special Page using the given query and protocol.
1148          *
1149          * If $proto is set to null, make a local URL. Otherwise, make a full
1150          * URL with the protocol specified.
1151          *
1152          * @param string $name Name of the Special page
1153          * @param string|string[] $urlaction Query to append
1154          * @param string|null $proto Protocol to use or null for a local URL
1155          * @return string
1156          */
1157         static function makeSpecialUrl( $name, $urlaction = '', $proto = null ) {
1158                 $title = SpecialPage::getSafeTitleFor( $name );
1159                 if ( is_null( $proto ) ) {
1160                         return $title->getLocalURL( $urlaction );
1161                 } else {
1162                         return $title->getFullURL( $urlaction, false, $proto );
1163                 }
1164         }
1165
1166         /**
1167          * @param string $name
1168          * @param string $subpage
1169          * @param string|string[] $urlaction
1170          * @return string
1171          */
1172         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1173                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1174                 return $title->getLocalURL( $urlaction );
1175         }
1176
1177         /**
1178          * @param string $name
1179          * @param string|string[] $urlaction
1180          * @return string
1181          */
1182         static function makeI18nUrl( $name, $urlaction = '' ) {
1183                 $title = Title::newFromText( wfMessage( $name )->inContentLanguage()->text() );
1184                 self::checkTitle( $title, $name );
1185                 return $title->getLocalURL( $urlaction );
1186         }
1187
1188         /**
1189          * @param string $name
1190          * @param string|string[] $urlaction
1191          * @return string
1192          */
1193         static function makeUrl( $name, $urlaction = '' ) {
1194                 $title = Title::newFromText( $name );
1195                 self::checkTitle( $title, $name );
1196
1197                 return $title->getLocalURL( $urlaction );
1198         }
1199
1200         /**
1201          * If url string starts with http, consider as external URL, else
1202          * internal
1203          * @param string $name
1204          * @return string URL
1205          */
1206         static function makeInternalOrExternalUrl( $name ) {
1207                 if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $name ) ) {
1208                         return $name;
1209                 } else {
1210                         return self::makeUrl( $name );
1211                 }
1212         }
1213
1214         /**
1215          * this can be passed the NS number as defined in Language.php
1216          * @param string $name
1217          * @param string|string[] $urlaction
1218          * @param int $namespace
1219          * @return string
1220          */
1221         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1222                 $title = Title::makeTitleSafe( $namespace, $name );
1223                 self::checkTitle( $title, $name );
1224
1225                 return $title->getLocalURL( $urlaction );
1226         }
1227
1228         /**
1229          * these return an array with the 'href' and boolean 'exists'
1230          * @param string $name
1231          * @param string|string[] $urlaction
1232          * @return array
1233          */
1234         static function makeUrlDetails( $name, $urlaction = '' ) {
1235                 $title = Title::newFromText( $name );
1236                 self::checkTitle( $title, $name );
1237
1238                 return [
1239                         'href' => $title->getLocalURL( $urlaction ),
1240                         'exists' => $title->isKnown(),
1241                 ];
1242         }
1243
1244         /**
1245          * Make URL details where the article exists (or at least it's convenient to think so)
1246          * @param string $name Article name
1247          * @param string|string[] $urlaction
1248          * @return array
1249          */
1250         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1251                 $title = Title::newFromText( $name );
1252                 self::checkTitle( $title, $name );
1253
1254                 return [
1255                         'href' => $title->getLocalURL( $urlaction ),
1256                         'exists' => true
1257                 ];
1258         }
1259
1260         /**
1261          * make sure we have some title to operate on
1262          *
1263          * @param Title &$title
1264          * @param string $name
1265          */
1266         static function checkTitle( &$title, $name ) {
1267                 if ( !is_object( $title ) ) {
1268                         $title = Title::newFromText( $name );
1269                         if ( !is_object( $title ) ) {
1270                                 $title = Title::newFromText( '--error: link target missing--' );
1271                         }
1272                 }
1273         }
1274
1275         /**
1276          * Build an array that represents the sidebar(s), the navigation bar among them.
1277          *
1278          * BaseTemplate::getSidebar can be used to simplify the format and id generation in new skins.
1279          *
1280          * The format of the returned array is [ heading => content, ... ], where:
1281          * - heading is the heading of a navigation portlet. It is either:
1282          *   - magic string to be handled by the skins ('SEARCH' / 'LANGUAGES' / 'TOOLBOX' / ...)
1283          *   - a message name (e.g. 'navigation'), the message should be HTML-escaped by the skin
1284          *   - plain text, which should be HTML-escaped by the skin
1285          * - content is the contents of the portlet. It is either:
1286          *   - HTML text (<ul><li>...</li>...</ul>)
1287          *   - array of link data in a format accepted by BaseTemplate::makeListItem()
1288          *   - (for a magic string as a key, any value)
1289          *
1290          * Note that extensions can control the sidebar contents using the SkinBuildSidebar hook
1291          * and can technically insert anything in here; skin creators are expected to handle
1292          * values described above.
1293          *
1294          * @return array
1295          */
1296         public function buildSidebar() {
1297                 $callback = function ( $old = null, &$ttl = null ) {
1298                         $bar = [];
1299                         $this->addToSidebar( $bar, 'sidebar' );
1300                         Hooks::run( 'SkinBuildSidebar', [ $this, &$bar ] );
1301                         if ( MessageCache::singleton()->isDisabled() ) {
1302                                 $ttl = WANObjectCache::TTL_UNCACHEABLE; // bug T133069
1303                         }
1304
1305                         return $bar;
1306                 };
1307
1308                 $msgCache = MessageCache::singleton();
1309                 $wanCache = MediaWikiServices::getInstance()->getMainWANObjectCache();
1310                 $config = $this->getConfig();
1311
1312                 $sidebar = $config->get( 'EnableSidebarCache' )
1313                         ? $wanCache->getWithSetCallback(
1314                                 $wanCache->makeKey( 'sidebar', $this->getLanguage()->getCode() ),
1315                                 $config->get( 'SidebarCacheExpiry' ),
1316                                 $callback,
1317                                 [
1318                                         'checkKeys' => [
1319                                                 // Unless there is both no exact $code override nor an i18n definition
1320                                                 // in the software, the only MediaWiki page to check is for $code.
1321                                                 $msgCache->getCheckKey( $this->getLanguage()->getCode() )
1322                                         ],
1323                                         'lockTSE' => 30
1324                                 ]
1325                         )
1326                         : $callback();
1327
1328                 // Apply post-processing to the cached value
1329                 Hooks::run( 'SidebarBeforeOutput', [ $this, &$sidebar ] );
1330
1331                 return $sidebar;
1332         }
1333
1334         /**
1335          * Add content from a sidebar system message
1336          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1337          *
1338          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1339          *
1340          * @param array &$bar
1341          * @param string $message
1342          */
1343         public function addToSidebar( &$bar, $message ) {
1344                 $this->addToSidebarPlain( $bar, $this->msg( $message )->inContentLanguage()->plain() );
1345         }
1346
1347         /**
1348          * Add content from plain text
1349          * @since 1.17
1350          * @param array &$bar
1351          * @param string $text
1352          * @return array
1353          */
1354         function addToSidebarPlain( &$bar, $text ) {
1355                 $lines = explode( "\n", $text );
1356
1357                 $heading = '';
1358                 $config = $this->getConfig();
1359                 $messageTitle = $config->get( 'EnableSidebarCache' )
1360                         ? Title::newMainPage() : $this->getTitle();
1361
1362                 foreach ( $lines as $line ) {
1363                         if ( strpos( $line, '*' ) !== 0 ) {
1364                                 continue;
1365                         }
1366                         $line = rtrim( $line, "\r" ); // for Windows compat
1367
1368                         if ( strpos( $line, '**' ) !== 0 ) {
1369                                 $heading = trim( $line, '* ' );
1370                                 if ( !array_key_exists( $heading, $bar ) ) {
1371                                         $bar[$heading] = [];
1372                                 }
1373                         } else {
1374                                 $line = trim( $line, '* ' );
1375
1376                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1377                                         $line = MessageCache::singleton()->transform( $line, false, null, $messageTitle );
1378                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1379                                         if ( count( $line ) !== 2 ) {
1380                                                 // Second sanity check, could be hit by people doing
1381                                                 // funky stuff with parserfuncs... (T35321)
1382                                                 continue;
1383                                         }
1384
1385                                         $extraAttribs = [];
1386
1387                                         $msgLink = $this->msg( $line[0] )->title( $messageTitle )->inContentLanguage();
1388                                         if ( $msgLink->exists() ) {
1389                                                 $link = $msgLink->text();
1390                                                 if ( $link == '-' ) {
1391                                                         continue;
1392                                                 }
1393                                         } else {
1394                                                 $link = $line[0];
1395                                         }
1396                                         $msgText = $this->msg( $line[1] )->title( $messageTitle );
1397                                         if ( $msgText->exists() ) {
1398                                                 $text = $msgText->text();
1399                                         } else {
1400                                                 $text = $line[1];
1401                                         }
1402
1403                                         if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $link ) ) {
1404                                                 $href = $link;
1405
1406                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1407                                                 if ( $config->get( 'NoFollowLinks' ) &&
1408                                                         !wfMatchesDomainList( $href, $config->get( 'NoFollowDomainExceptions' ) )
1409                                                 ) {
1410                                                         $extraAttribs['rel'] = 'nofollow';
1411                                                 }
1412
1413                                                 if ( $config->get( 'ExternalLinkTarget' ) ) {
1414                                                         $extraAttribs['target'] = $config->get( 'ExternalLinkTarget' );
1415                                                 }
1416                                         } else {
1417                                                 $title = Title::newFromText( $link );
1418
1419                                                 if ( $title ) {
1420                                                         $title = $title->fixSpecialName();
1421                                                         $href = $title->getLinkURL();
1422                                                 } else {
1423                                                         $href = 'INVALID-TITLE';
1424                                                 }
1425                                         }
1426
1427                                         $bar[$heading][] = array_merge( [
1428                                                 'text' => $text,
1429                                                 'href' => $href,
1430                                                 'id' => Sanitizer::escapeIdForAttribute( 'n-' . strtr( $line[1], ' ', '-' ) ),
1431                                                 'active' => false,
1432                                         ], $extraAttribs );
1433                                 } else {
1434                                         continue;
1435                                 }
1436                         }
1437                 }
1438
1439                 return $bar;
1440         }
1441
1442         /**
1443          * Gets new talk page messages for the current user and returns an
1444          * appropriate alert message (or an empty string if there are no messages)
1445          * @return string
1446          */
1447         function getNewtalks() {
1448                 $newMessagesAlert = '';
1449                 $user = $this->getUser();
1450                 $newtalks = $user->getNewMessageLinks();
1451                 $out = $this->getOutput();
1452                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
1453
1454                 // Allow extensions to disable or modify the new messages alert
1455                 if ( !Hooks::run( 'GetNewMessagesAlert', [ &$newMessagesAlert, $newtalks, $user, $out ] ) ) {
1456                         return '';
1457                 }
1458                 if ( $newMessagesAlert ) {
1459                         return $newMessagesAlert;
1460                 }
1461
1462                 if ( count( $newtalks ) == 1 && WikiMap::isCurrentWikiId( $newtalks[0]['wiki'] ) ) {
1463                         $uTalkTitle = $user->getTalkPage();
1464                         $lastSeenRev = $newtalks[0]['rev'] ?? null;
1465                         $nofAuthors = 0;
1466                         if ( $lastSeenRev !== null ) {
1467                                 $plural = true; // Default if we have a last seen revision: if unknown, use plural
1468                                 $latestRev = Revision::newFromTitle( $uTalkTitle, false, Revision::READ_NORMAL );
1469                                 if ( $latestRev !== null ) {
1470                                         // Singular if only 1 unseen revision, plural if several unseen revisions.
1471                                         $plural = $latestRev->getParentId() !== $lastSeenRev->getId();
1472                                         $nofAuthors = $uTalkTitle->countAuthorsBetween(
1473                                                 $lastSeenRev, $latestRev, 10, 'include_new' );
1474                                 }
1475                         } else {
1476                                 // Singular if no revision -> diff link will show latest change only in any case
1477                                 $plural = false;
1478                         }
1479                         $plural = $plural ? 999 : 1;
1480                         // 999 signifies "more than one revision". We don't know how many, and even if we did,
1481                         // the number of revisions or authors is not necessarily the same as the number of
1482                         // "messages".
1483                         $newMessagesLink = $linkRenderer->makeKnownLink(
1484                                 $uTalkTitle,
1485                                 $this->msg( 'newmessageslinkplural' )->params( $plural )->text(),
1486                                 [],
1487                                 $uTalkTitle->isRedirect() ? [ 'redirect' => 'no' ] : []
1488                         );
1489
1490                         $newMessagesDiffLink = $linkRenderer->makeKnownLink(
1491                                 $uTalkTitle,
1492                                 $this->msg( 'newmessagesdifflinkplural' )->params( $plural )->text(),
1493                                 [],
1494                                 $lastSeenRev !== null
1495                                         ? [ 'oldid' => $lastSeenRev->getId(), 'diff' => 'cur' ]
1496                                         : [ 'diff' => 'cur' ]
1497                         );
1498
1499                         if ( $nofAuthors >= 1 && $nofAuthors <= 10 ) {
1500                                 $newMessagesAlert = $this->msg(
1501                                         'youhavenewmessagesfromusers',
1502                                         $newMessagesLink,
1503                                         $newMessagesDiffLink
1504                                 )->numParams( $nofAuthors, $plural );
1505                         } else {
1506                                 // $nofAuthors === 11 signifies "11 or more" ("more than 10")
1507                                 $newMessagesAlert = $this->msg(
1508                                         $nofAuthors > 10 ? 'youhavenewmessagesmanyusers' : 'youhavenewmessages',
1509                                         $newMessagesLink,
1510                                         $newMessagesDiffLink
1511                                 )->numParams( $plural );
1512                         }
1513                         $newMessagesAlert = $newMessagesAlert->text();
1514                         # Disable CDN cache
1515                         $out->setCdnMaxage( 0 );
1516                 } elseif ( count( $newtalks ) ) {
1517                         $sep = $this->msg( 'newtalkseparator' )->escaped();
1518                         $msgs = [];
1519
1520                         foreach ( $newtalks as $newtalk ) {
1521                                 $msgs[] = Xml::element(
1522                                         'a',
1523                                         [ 'href' => $newtalk['link'] ], $newtalk['wiki']
1524                                 );
1525                         }
1526                         $parts = implode( $sep, $msgs );
1527                         $newMessagesAlert = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1528                         $out->setCdnMaxage( 0 );
1529                 }
1530
1531                 return $newMessagesAlert;
1532         }
1533
1534         /**
1535          * Get a cached notice
1536          *
1537          * @param string $name Message name, or 'default' for $wgSiteNotice
1538          * @return string|bool HTML fragment, or false to indicate that the caller
1539          *   should fall back to the next notice in its sequence
1540          */
1541         private function getCachedNotice( $name ) {
1542                 $config = $this->getConfig();
1543
1544                 if ( $name === 'default' ) {
1545                         // special case
1546                         $notice = $config->get( 'SiteNotice' );
1547                         if ( empty( $notice ) ) {
1548                                 return false;
1549                         }
1550                 } else {
1551                         $msg = $this->msg( $name )->inContentLanguage();
1552                         if ( $msg->isBlank() ) {
1553                                 return '';
1554                         } elseif ( $msg->isDisabled() ) {
1555                                 return false;
1556                         }
1557                         $notice = $msg->plain();
1558                 }
1559
1560                 $services = MediaWikiServices::getInstance();
1561                 $cache = $services->getMainWANObjectCache();
1562                 $parsed = $cache->getWithSetCallback(
1563                         // Use the extra hash appender to let eg SSL variants separately cache
1564                         // Key is verified with md5 hash of unparsed wikitext
1565                         $cache->makeKey( $name, $config->get( 'RenderHashAppend' ), md5( $notice ) ),
1566                         // TTL in seconds
1567                         600,
1568                         function () use ( $notice ) {
1569                                 return $this->getOutput()->parseAsInterface( $notice );
1570                         }
1571                 );
1572
1573                 $contLang = $services->getContentLanguage();
1574                 return Html::rawElement(
1575                         'div',
1576                         [
1577                                 'id' => 'localNotice',
1578                                 'lang' => $contLang->getHtmlCode(),
1579                                 'dir' => $contLang->getDir()
1580                         ],
1581                         $parsed
1582                 );
1583         }
1584
1585         /**
1586          * Get the site notice
1587          *
1588          * @return string HTML fragment
1589          */
1590         function getSiteNotice() {
1591                 $siteNotice = '';
1592
1593                 if ( Hooks::run( 'SiteNoticeBefore', [ &$siteNotice, $this ] ) ) {
1594                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1595                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1596                         } else {
1597                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1598                                 if ( $anonNotice === false ) {
1599                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1600                                 } else {
1601                                         $siteNotice = $anonNotice;
1602                                 }
1603                         }
1604                         if ( $siteNotice === false ) {
1605                                 $siteNotice = $this->getCachedNotice( 'default' );
1606                         }
1607                 }
1608
1609                 Hooks::run( 'SiteNoticeAfter', [ &$siteNotice, $this ] );
1610                 return $siteNotice;
1611         }
1612
1613         /**
1614          * Create a section edit link.
1615          *
1616          * @suppress SecurityCheck-XSS $links has keys of different taint types
1617          * @param Title $nt The title being linked to (may not be the same as
1618          *   the current page, if the section is included from a template)
1619          * @param string $section The designation of the section being pointed to,
1620          *   to be included in the link, like "&section=$section"
1621          * @param string|null $tooltip The tooltip to use for the link: will be escaped
1622          *   and wrapped in the 'editsectionhint' message
1623          * @param Language $lang Language object
1624          * @return string HTML to use for edit link
1625          */
1626         public function doEditSectionLink( Title $nt, $section, $tooltip, Language $lang ) {
1627                 // HTML generated here should probably have userlangattributes
1628                 // added to it for LTR text on RTL pages
1629
1630                 $attribs = [];
1631                 if ( !is_null( $tooltip ) ) {
1632                         $attribs['title'] = $this->msg( 'editsectionhint' )->rawParams( $tooltip )
1633                                 ->inLanguage( $lang )->text();
1634                 }
1635
1636                 $links = [
1637                         'editsection' => [
1638                                 'text' => $this->msg( 'editsection' )->inLanguage( $lang )->text(),
1639                                 'targetTitle' => $nt,
1640                                 'attribs' => $attribs,
1641                                 'query' => [ 'action' => 'edit', 'section' => $section ]
1642                         ]
1643                 ];
1644
1645                 Hooks::run( 'SkinEditSectionLinks', [ $this, $nt, $section, $tooltip, &$links, $lang ] );
1646
1647                 $result = '<span class="mw-editsection"><span class="mw-editsection-bracket">[</span>';
1648
1649                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
1650                 $linksHtml = [];
1651                 foreach ( $links as $k => $linkDetails ) {
1652                         $linksHtml[] = $linkRenderer->makeKnownLink(
1653                                 $linkDetails['targetTitle'],
1654                                 $linkDetails['text'],
1655                                 $linkDetails['attribs'],
1656                                 $linkDetails['query']
1657                         );
1658                 }
1659
1660                 $result .= implode(
1661                         '<span class="mw-editsection-divider">'
1662                                 . $this->msg( 'pipe-separator' )->inLanguage( $lang )->escaped()
1663                                 . '</span>',
1664                         $linksHtml
1665                 );
1666
1667                 $result .= '<span class="mw-editsection-bracket">]</span></span>';
1668                 return $result;
1669         }
1670
1671 }