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
  25 /**
  26  * @defgroup Skins Skins
  27  */
  28
  29 /**
  30  * The main skin class which provides methods and properties for all other skins.
  31  *
  32  * See docs/skin.txt for more information.
  33  *
  34  * @ingroup Skins
  35  */
  36 abstract class Skin extends ContextSource {
  37         /**
  38          * @var string|null
  39          */
  40         protected $skinname = null;
  41
  42         protected $mRelevantTitle = null;
  43         protected $mRelevantUser = null;
  44
  45         /**
  46          * @var string Stylesheets set to use. Subdirectory in skins/ where various stylesheets are
  47          *   located. Only needs to be set if you intend to use the getSkinStylePath() method.
  48          */
  49         public $stylename = null;
  50
  51         /**
  52          * Fetch the set of available skins.
  53          * @return array Associative array of strings
  54          */
  55         static function getSkinNames() {
  56                 return SkinFactory::getDefaultInstance()->getSkinNames();
  57         }
  58
  59         /**
  60          * Fetch the skinname messages for available skins.
  61          * @return string[]
  62          */
  63         static function getSkinNameMessages() {
  64                 $messages = [];
  65                 foreach ( self::getSkinNames() as $skinKey => $skinName ) {
  66                         $messages[] = "skinname-$skinKey";
  67                 }
  68                 return $messages;
  69         }
  70
  71         /**
  72          * Fetch the list of user-selectable skins in regards to $wgSkipSkins.
  73          * Useful for Special:Preferences and other places where you
  74          * only want to show skins users _can_ use.
  75          * @return string[]
  76          * @since 1.23
  77          */
  78         public static function getAllowedSkins() {
  79                 global $wgSkipSkins;
  80
  81                 $allowedSkins = self::getSkinNames();
  82
  83                 foreach ( $wgSkipSkins as $skip ) {
  84                         unset( $allowedSkins[$skip] );
  85                 }
  86
  87                 return $allowedSkins;
  88         }
  89
  90         /**
  91          * Normalize a skin preference value to a form that can be loaded.
  92          *
  93          * If a skin can't be found, it will fall back to the configured default ($wgDefaultSkin), or the
  94          * hardcoded default ($wgFallbackSkin) if the default skin is unavailable too.
  95          *
  96          * @param string $key 'monobook', 'vector', etc.
  97          * @return string
  98          */
  99         static function normalizeKey( $key ) {
 100                 global $wgDefaultSkin, $wgFallbackSkin;
 101
 102                 $skinNames = self::getSkinNames();
 103
 104                 // Make keys lowercase for case-insensitive matching.
 105                 $skinNames = array_change_key_case( $skinNames, CASE_LOWER );
 106                 $key = strtolower( $key );
 107                 $defaultSkin = strtolower( $wgDefaultSkin );
 108                 $fallbackSkin = strtolower( $wgFallbackSkin );
 109
 110                 if ( $key == '' || $key == 'default' ) {
 111                         // Don't return the default immediately;
 112                         // in a misconfiguration we need to fall back.
 113                         $key = $defaultSkin;
 114                 }
 115
 116                 if ( isset( $skinNames[$key] ) ) {
 117                         return $key;
 118                 }
 119
 120                 // Older versions of the software used a numeric setting
 121                 // in the user preferences.
 122                 $fallback = [
 123                         0 => $defaultSkin,
 124                         2 => 'cologneblue'
 125                 ];
 126
 127                 if ( isset( $fallback[$key] ) ) {
 128                         $key = $fallback[$key];
 129                 }
 130
 131                 if ( isset( $skinNames[$key] ) ) {
 132                         return $key;
 133                 } elseif ( isset( $skinNames[$defaultSkin] ) ) {
 134                         return $defaultSkin;
 135                 } else {
 136                         return $fallbackSkin;
 137                 }
 138         }
 139
 140         /**
 141          * @since 1.31
 142          * @param string|null $skinname
 143          */
 144         public function __construct( $skinname = null ) {
 145                 if ( is_string( $skinname ) ) {
 146                         $this->skinname = $skinname;
 147                 }
 148         }
 149
 150         /**
 151          * @return string|null Skin name
 152          */
 153         public function getSkinName() {
 154                 return $this->skinname;
 155         }
 156
 157         /**
 158          * @param OutputPage $out
 159          */
 160         public function initPage( OutputPage $out ) {
 161                 $this->preloadExistence();
 162         }
 163
 164         /**
 165          * Defines the ResourceLoader modules that should be added to the skin
 166          * It is recommended that skins wishing to override call parent::getDefaultModules()
 167          * and substitute out any modules they wish to change by using a key to look them up
 168          *
 169          * For style modules, use setupSkinUserCss() instead.
 170          *
 171          * @return array Array of modules with helper keys for easy overriding
 172          */
 173         public function getDefaultModules() {
 174                 $out = $this->getOutput();
 175                 $config = $this->getConfig();
 176                 $user = $out->getUser();
 177                 $modules = [
 178                         // modules not specific to any specific skin or page
 179                         'core' => [
 180                                 // Enforce various default modules for all pages and all skins
 181                                 // Keep this list as small as possible
 182                                 'site',
 183                                 'mediawiki.page.startup',
 184                                 'mediawiki.user',
 185                         ],
 186                         // modules that enhance the page content in some way
 187                         'content' => [
 188                                 'mediawiki.page.ready',
 189                         ],
 190                         // modules relating to search functionality
 191                         'search' => [],
 192                         // modules relating to functionality relating to watching an article
 193                         'watch' => [],
 194                         // modules which relate to the current users preferences
 195                         'user' => [],
 196                 ];
 197
 198                 // Support for high-density display images if enabled
 199                 if ( $config->get( 'ResponsiveImages' ) ) {
 200                         $modules['core'][] = 'mediawiki.hidpi';
 201                 }
 202
 203                 // Preload jquery.tablesorter for mediawiki.page.ready
 204                 if ( strpos( $out->getHTML(), 'sortable' ) !== false ) {
 205                         $modules['content'][] = 'jquery.tablesorter';
 206                 }
 207
 208                 // Preload jquery.makeCollapsible for mediawiki.page.ready
 209                 if ( strpos( $out->getHTML(), 'mw-collapsible' ) !== false ) {
 210                         $modules['content'][] = 'jquery.makeCollapsible';
 211                 }
 212
 213                 if ( $out->isTOCEnabled() ) {
 214                         $modules['content'][] = 'mediawiki.toc';
 215                 }
 216
 217                 // Add various resources if required
 218                 if ( $user->isLoggedIn()
 219                         && $user->isAllowedAll( 'writeapi', 'viewmywatchlist', 'editmywatchlist' )
 220                         && $this->getRelevantTitle()->canExist()
 221                 ) {
 222                         $modules['watch'][] = 'mediawiki.page.watch.ajax';
 223                 }
 224
 225                 $modules['search'][] = 'mediawiki.searchSuggest';
 226
 227                 if ( $user->getBoolOption( 'editsectiononrightclick' ) ) {
 228                         $modules['user'][] = 'mediawiki.action.view.rightClickEdit';
 229                 }
 230
 231                 // Crazy edit-on-double-click stuff
 232                 if ( $out->isArticle() && $user->getOption( 'editondblclick' ) ) {
 233                         $modules['user'][] = 'mediawiki.action.view.dblClickEdit';
 234                 }
 235                 return $modules;
 236         }
 237
 238         /**
 239          * Preload the existence of three commonly-requested pages in a single query
 240          */
 241         protected function preloadExistence() {
 242                 $titles = [];
 243
 244                 // User/talk link
 245                 $user = $this->getUser();
 246                 if ( $user->isLoggedIn() ) {
 247                         $titles[] = $user->getUserPage();
 248                         $titles[] = $user->getTalkPage();
 249                 }
 250
 251                 // Check, if the page can hold some kind of content, otherwise do nothing
 252                 $title = $this->getRelevantTitle();
 253                 if ( $title->canExist() ) {
 254                         if ( $title->isTalkPage() ) {
 255                                 $titles[] = $title->getSubjectPage();
 256                         } else {
 257                                 $titles[] = $title->getTalkPage();
 258                         }
 259                 }
 260
 261                 // Footer links (used by SkinTemplate::prepareQuickTemplate)
 262                 foreach ( [
 263                         $this->footerLinkTitle( 'privacy', 'privacypage' ),
 264                         $this->footerLinkTitle( 'aboutsite', 'aboutpage' ),
 265                         $this->footerLinkTitle( 'disclaimers', 'disclaimerpage' ),
 266                 ] as $title ) {
 267                         if ( $title ) {
 268                                 $titles[] = $title;
 269                         }
 270                 }
 271
 272                 Hooks::run( 'SkinPreloadExistence', [ &$titles, $this ] );
 273
 274                 if ( $titles ) {
 275                         $lb = new LinkBatch( $titles );
 276                         $lb->setCaller( __METHOD__ );
 277                         $lb->execute();
 278                 }
 279         }
 280
 281         /**
 282          * Get the current revision ID
 283          *
 284          * @return int
 285          */
 286         public function getRevisionId() {
 287                 return $this->getOutput()->getRevisionId();
 288         }
 289
 290         /**
 291          * Whether the revision displayed is the latest revision of the page
 292          *
 293          * @return bool
 294          */
 295         public function isRevisionCurrent() {
 296                 $revID = $this->getRevisionId();
 297                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 298         }
 299
 300         /**
 301          * Set the "relevant" title
 302          * @see self::getRelevantTitle()
 303          * @param Title $t
 304          */
 305         public function setRelevantTitle( $t ) {
 306                 $this->mRelevantTitle = $t;
 307         }
 308
 309         /**
 310          * Return the "relevant" title.
 311          * A "relevant" title is not necessarily the actual title of the page.
 312          * Special pages like Special:MovePage use set the page they are acting on
 313          * as their "relevant" title, this allows the skin system to display things
 314          * such as content tabs which belong to to that page instead of displaying
 315          * a basic special page tab which has almost no meaning.
 316          *
 317          * @return Title
 318          */
 319         public function getRelevantTitle() {
 320                 if ( isset( $this->mRelevantTitle ) ) {
 321                         return $this->mRelevantTitle;
 322                 }
 323                 return $this->getTitle();
 324         }
 325
 326         /**
 327          * Set the "relevant" user
 328          * @see self::getRelevantUser()
 329          * @param User $u
 330          */
 331         public function setRelevantUser( $u ) {
 332                 $this->mRelevantUser = $u;
 333         }
 334
 335         /**
 336          * Return the "relevant" user.
 337          * A "relevant" user is similar to a relevant title. Special pages like
 338          * Special:Contributions mark the user which they are relevant to so that
 339          * things like the toolbox can display the information they usually are only
 340          * able to display on a user's userpage and talkpage.
 341          * @return User
 342          */
 343         public function getRelevantUser() {
 344                 if ( isset( $this->mRelevantUser ) ) {
 345                         return $this->mRelevantUser;
 346                 }
 347                 $title = $this->getRelevantTitle();
 348                 if ( $title->hasSubjectNamespace( NS_USER ) ) {
 349                         $rootUser = $title->getRootText();
 350                         if ( User::isIP( $rootUser ) ) {
 351                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 352                         } else {
 353                                 $user = User::newFromName( $rootUser, false );
 354
 355                                 if ( $user ) {
 356                                         $user->load( User::READ_NORMAL );
 357
 358                                         if ( $user->isLoggedIn() ) {
 359                                                 $this->mRelevantUser = $user;
 360                                         }
 361                                 }
 362                         }
 363                         return $this->mRelevantUser;
 364                 }
 365                 return null;
 366         }
 367
 368         /**
 369          * Outputs the HTML generated by other functions.
 370          * @param OutputPage $out
 371          */
 372         abstract function outputPage( OutputPage $out = null );
 373
 374         /**
 375          * @param array $data
 376          * @return string
 377          */
 378         static function makeVariablesScript( $data ) {
 379                 if ( $data ) {
 380                         return ResourceLoader::makeInlineScript(
 381                                 ResourceLoader::makeConfigSetScript( $data )
 382                         );
 383                 } else {
 384                         return '';
 385                 }
 386         }
 387
 388         /**
 389          * Get the query to generate a dynamic stylesheet
 390          *
 391          * @return array
 392          */
 393         public static function getDynamicStylesheetQuery() {
 394                 global $wgSquidMaxage;
 395
 396                 return [
 397                                 'action' => 'raw',
 398                                 'maxage' => $wgSquidMaxage,
 399                                 'usemsgcache' => 'yes',
 400                                 'ctype' => 'text/css',
 401                                 'smaxage' => $wgSquidMaxage,
 402                         ];
 403         }
 404
 405         /**
 406          * Add skin specific stylesheets
 407          * Calling this method with an $out of anything but the same OutputPage
 408          * inside ->getOutput() is deprecated. The $out arg is kept
 409          * for compatibility purposes with skins.
 410          * @param OutputPage $out
 411          * @todo delete
 412          */
 413         abstract function setupSkinUserCss( OutputPage $out );
 414
 415         /**
 416          * TODO: document
 417          * @param Title $title
 418          * @return string
 419          */
 420         function getPageClasses( $title ) {
 421                 $numeric = 'ns-' . $title->getNamespace();
 422
 423                 if ( $title->isSpecialPage() ) {
 424                         $type = 'ns-special';
 425                         // T25315: provide a class based on the canonical special page name without subpages
 426                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 427                         if ( $canonicalName ) {
 428                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 429                         } else {
 430                                 $type .= ' mw-invalidspecialpage';
 431                         }
 432                 } elseif ( $title->isTalkPage() ) {
 433                         $type = 'ns-talk';
 434                 } else {
 435                         $type = 'ns-subject';
 436                 }
 437
 438                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 439                 $root = Sanitizer::escapeClass( 'rootpage-' . $title->getRootTitle()->getPrefixedText() );
 440
 441                 return "$numeric $type $name $root";
 442         }
 443
 444         /**
 445          * Return values for <html> element
 446          * @return array Array of associative name-to-value elements for <html> element
 447          */
 448         public function getHtmlElementAttributes() {
 449                 $lang = $this->getLanguage();
 450                 return [
 451                         'lang' => $lang->getHtmlCode(),
 452                         'dir' => $lang->getDir(),
 453                         'class' => 'client-nojs',
 454                 ];
 455         }
 456
 457         /**
 458          * This will be called by OutputPage::headElement when it is creating the
 459          * "<body>" tag, skins can override it if they have a need to add in any
 460          * body attributes or classes of their own.
 461          * @param OutputPage $out
 462          * @param array &$bodyAttrs
 463          */
 464         function addToBodyAttributes( $out, &$bodyAttrs ) {
 465                 // does nothing by default
 466         }
 467
 468         /**
 469          * URL to the logo
 470          * @return string
 471          */
 472         function getLogo() {
 473                 global $wgLogo;
 474                 return $wgLogo;
 475         }
 476
 477         /**
 478          * Whether the logo should be preloaded with an HTTP link header or not
 479          * @since 1.29
 480          * @return bool
 481          */
 482         public function shouldPreloadLogo() {
 483                 return false;
 484         }
 485
 486         /**
 487          * @return string HTML
 488          */
 489         function getCategoryLinks() {
 490                 global $wgUseCategoryBrowser;
 491
 492                 $out = $this->getOutput();
 493                 $allCats = $out->getCategoryLinks();
 494
 495                 if ( !count( $allCats ) ) {
 496                         return '';
 497                 }
 498
 499                 $embed = "<li>";
 500                 $pop = "</li>";
 501
 502                 $s = '';
 503                 $colon = $this->msg( 'colon-separator' )->escaped();
 504
 505                 if ( !empty( $allCats['normal'] ) ) {
 506                         $t = $embed . implode( "{$pop}{$embed}", $allCats['normal'] ) . $pop;
 507
 508                         $msg = $this->msg( 'pagecategories' )->numParams( count( $allCats['normal'] ) )->escaped();
 509                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 510                         $title = Title::newFromText( $linkPage );
 511                         $link = $title ? Linker::link( $title, $msg ) : $msg;
 512                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 513                                 $link . $colon . '<ul>' . $t . '</ul>' . '</div>';
 514                 }
 515
 516                 # Hidden categories
 517                 if ( isset( $allCats['hidden'] ) ) {
 518                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 519                                 $class = ' mw-hidden-cats-user-shown';
 520                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 521                                 $class = ' mw-hidden-cats-ns-shown';
 522                         } else {
 523                                 $class = ' mw-hidden-cats-hidden';
 524                         }
 525
 526                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 527                                 $this->msg( 'hidden-categories' )->numParams( count( $allCats['hidden'] ) )->escaped() .
 528                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}", $allCats['hidden'] ) . $pop . '</ul>' .
 529                                 '</div>';
 530                 }
 531
 532                 # optional 'dmoz-like' category browser. Will be shown under the list
 533                 # of categories an article belong to
 534                 if ( $wgUseCategoryBrowser ) {
 535                         $s .= '<br /><hr />';
 536
 537                         # get a big array of the parents tree
 538                         $parenttree = $this->getTitle()->getParentCategoryTree();
 539                         # Skin object passed by reference cause it can not be
 540                         # accessed under the method subfunction drawCategoryBrowser
 541                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 542                         # Clean out bogus first entry and sort them
 543                         unset( $tempout[0] );
 544                         asort( $tempout );
 545                         # Output one per line
 546                         $s .= implode( "<br />\n", $tempout );
 547                 }
 548
 549                 return $s;
 550         }
 551
 552         /**
 553          * Render the array as a series of links.
 554          * @param array $tree Categories tree returned by Title::getParentCategoryTree
 555          * @return string Separated by &gt;, terminate with "\n"
 556          */
 557         function drawCategoryBrowser( $tree ) {
 558                 $return = '';
 559
 560                 foreach ( $tree as $element => $parent ) {
 561                         if ( empty( $parent ) ) {
 562                                 # element start a new list
 563                                 $return .= "\n";
 564                         } else {
 565                                 # grab the others elements
 566                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 567                         }
 568
 569                         # add our current element to the list
 570                         $eltitle = Title::newFromText( $element );
 571                         $return .= Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 572                 }
 573
 574                 return $return;
 575         }
 576
 577         /**
 578          * @return string HTML
 579          */
 580         function getCategories() {
 581                 $out = $this->getOutput();
 582                 $catlinks = $this->getCategoryLinks();
 583
 584                 // Check what we're showing
 585                 $allCats = $out->getCategoryLinks();
 586                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 587                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 588
 589                 $classes = [ 'catlinks' ];
 590                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 591                         $classes[] = 'catlinks-allhidden';
 592                 }
 593
 594                 return Html::rawElement(
 595                         'div',
 596                         [ 'id' => 'catlinks', 'class' => $classes, 'data-mw' => 'interface' ],
 597                         $catlinks
 598                 );
 599         }
 600
 601         /**
 602          * This runs a hook to allow extensions placing their stuff after content
 603          * and article metadata (e.g. categories).
 604          * Note: This function has nothing to do with afterContent().
 605          *
 606          * This hook is placed here in order to allow using the same hook for all
 607          * skins, both the SkinTemplate based ones and the older ones, which directly
 608          * use this class to get their data.
 609          *
 610          * The output of this function gets processed in SkinTemplate::outputPage() for
 611          * the SkinTemplate based skins, all other skins should directly echo it.
 612          *
 613          * @return string Empty by default, if not changed by any hook function.
 614          */
 615         protected function afterContentHook() {
 616                 $data = '';
 617
 618                 if ( Hooks::run( 'SkinAfterContent', [ &$data, $this ] ) ) {
 619                         // adding just some spaces shouldn't toggle the output
 620                         // of the whole <div/>, so we use trim() here
 621                         if ( trim( $data ) != '' ) {
 622                                 // Doing this here instead of in the skins to
 623                                 // ensure that the div has the same ID in all
 624                                 // skins
 625                                 $data = "<div id='mw-data-after-content'>\n" .
 626                                         "\t$data\n" .
 627                                         "</div>\n";
 628                         }
 629                 } else {
 630                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 631                 }
 632
 633                 return $data;
 634         }
 635
 636         /**
 637          * Generate debug data HTML for displaying at the bottom of the main content
 638          * area.
 639          * @return string HTML containing debug data, if enabled (otherwise empty).
 640          */
 641         protected function generateDebugHTML() {
 642                 return MWDebug::getHTMLDebugLog();
 643         }
 644
 645         /**
 646          * This gets called shortly before the "</body>" tag.
 647          *
 648          * @return string HTML-wrapped JS code to be put before "</body>"
 649          */
 650         function bottomScripts() {
 651                 // TODO and the suckage continues. This function is really just a wrapper around
 652                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 653                 // up at some point
 654                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 655                 Hooks::run( 'SkinAfterBottomScripts', [ $this, &$bottomScriptText ] );
 656
 657                 return $bottomScriptText;
 658         }
 659
 660         /**
 661          * Text with the permalink to the source page,
 662          * usually shown on the footer of a printed page
 663          *
 664          * @return string HTML text with an URL
 665          */
 666         function printSource() {
 667                 $oldid = $this->getRevisionId();
 668                 if ( $oldid ) {
 669                         $canonicalUrl = $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid );
 670                         $url = htmlspecialchars( wfExpandIRI( $canonicalUrl ) );
 671                 } else {
 672                         // oldid not available for non existing pages
 673                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
 674                 }
 675
 676                 return $this->msg( 'retrievedfrom' )
 677                         ->rawParams( '<a dir="ltr" href="' . $url . '">' . $url . '</a>' )
 678                         ->parse();
 679         }
 680
 681         /**
 682          * @return string HTML
 683          */
 684         function getUndeleteLink() {
 685                 $action = $this->getRequest()->getVal( 'action', 'view' );
 686
 687                 if ( $this->getTitle()->userCan( 'deletedhistory', $this->getUser() ) &&
 688                         ( !$this->getTitle()->exists() || $action == 'history' ) ) {
 689                         $n = $this->getTitle()->isDeleted();
 690
 691                         if ( $n ) {
 692                                 if ( $this->getTitle()->quickUserCan( 'undelete', $this->getUser() ) ) {
 693                                         $msg = 'thisisdeleted';
 694                                 } else {
 695                                         $msg = 'viewdeleted';
 696                                 }
 697
 698                                 return $this->msg( $msg )->rawParams(
 699                                         Linker::linkKnown(
 700                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 701                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 702                                         )->escaped();
 703                         }
 704                 }
 705
 706                 return '';
 707         }
 708
 709         /**
 710          * @param OutputPage $out Defaults to $this->getOutput() if left as null
 711          * @return string
 712          */
 713         function subPageSubtitle( $out = null ) {
 714                 if ( $out === null ) {
 715                         $out = $this->getOutput();
 716                 }
 717                 $title = $out->getTitle();
 718                 $subpages = '';
 719
 720                 if ( !Hooks::run( 'SkinSubPageSubtitle', [ &$subpages, $this, $out ] ) ) {
 721                         return $subpages;
 722                 }
 723
 724                 if ( $out->isArticle() && MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 725                         $ptext = $title->getPrefixedText();
 726                         if ( strpos( $ptext, '/' ) !== false ) {
 727                                 $links = explode( '/', $ptext );
 728                                 array_pop( $links );
 729                                 $c = 0;
 730                                 $growinglink = '';
 731                                 $display = '';
 732                                 $lang = $this->getLanguage();
 733
 734                                 foreach ( $links as $link ) {
 735                                         $growinglink .= $link;
 736                                         $display .= $link;
 737                                         $linkObj = Title::newFromText( $growinglink );
 738
 739                                         if ( is_object( $linkObj ) && $linkObj->isKnown() ) {
 740                                                 $getlink = Linker::linkKnown(
 741                                                         $linkObj,
 742                                                         htmlspecialchars( $display )
 743                                                 );
 744
 745                                                 $c++;
 746
 747                                                 if ( $c > 1 ) {
 748                                                         $subpages .= $lang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
 749                                                 } else {
 750                                                         $subpages .= '&lt; ';
 751                                                 }
 752
 753                                                 $subpages .= $getlink;
 754                                                 $display = '';
 755                                         } else {
 756                                                 $display .= '/';
 757                                         }
 758                                         $growinglink .= '/';
 759                                 }
 760                         }
 761                 }
 762
 763                 return $subpages;
 764         }
 765
 766         /**
 767          * @return string
 768          */
 769         function getSearchLink() {
 770                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 771                 return $searchPage->getLocalURL();
 772         }
 773
 774         /**
 775          * @return string
 776          */
 777         function escapeSearchLink() {
 778                 return htmlspecialchars( $this->getSearchLink() );
 779         }
 780
 781         /**
 782          * @param string $type
 783          * @return string
 784          */
 785         function getCopyright( $type = 'detect' ) {
 786                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 787
 788                 if ( $type == 'detect' ) {
 789                         if ( !$this->isRevisionCurrent()
 790                                 && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled()
 791                         ) {
 792                                 $type = 'history';
 793                         } else {
 794                                 $type = 'normal';
 795                         }
 796                 }
 797
 798                 if ( $type == 'history' ) {
 799                         $msg = 'history_copyright';
 800                 } else {
 801                         $msg = 'copyright';
 802                 }
 803
 804                 if ( $wgRightsPage ) {
 805                         $title = Title::newFromText( $wgRightsPage );
 806                         $link = Linker::linkKnown( $title, $wgRightsText );
 807                 } elseif ( $wgRightsUrl ) {
 808                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 809                 } elseif ( $wgRightsText ) {
 810                         $link = $wgRightsText;
 811                 } else {
 812                         # Give up now
 813                         return '';
 814                 }
 815
 816                 // Allow for site and per-namespace customization of copyright notice.
 817                 // @todo Remove deprecated $forContent param from hook handlers and then remove here.
 818                 $forContent = true;
 819
 820                 Hooks::run(
 821                         'SkinCopyrightFooter',
 822                         [ $this->getTitle(), $type, &$msg, &$link, &$forContent ]
 823                 );
 824
 825                 return $this->msg( $msg )->rawParams( $link )->text();
 826         }
 827
 828         /**
 829          * @return null|string
 830          */
 831         function getCopyrightIcon() {
 832                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgFooterIcons;
 833
 834                 $out = '';
 835
 836                 if ( $wgFooterIcons['copyright']['copyright'] ) {
 837                         $out = $wgFooterIcons['copyright']['copyright'];
 838                 } elseif ( $wgRightsIcon ) {
 839                         $icon = htmlspecialchars( $wgRightsIcon );
 840
 841                         if ( $wgRightsUrl ) {
 842                                 $url = htmlspecialchars( $wgRightsUrl );
 843                                 $out .= '<a href="' . $url . '">';
 844                         }
 845
 846                         $text = htmlspecialchars( $wgRightsText );
 847                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 848
 849                         if ( $wgRightsUrl ) {
 850                                 $out .= '</a>';
 851                         }
 852                 }
 853
 854                 return $out;
 855         }
 856
 857         /**
 858          * Gets the powered by MediaWiki icon.
 859          * @return string
 860          */
 861         function getPoweredBy() {
 862                 global $wgResourceBasePath;
 863
 864                 $url1 = htmlspecialchars(
 865                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_88x31.png"
 866                 );
 867                 $url1_5 = htmlspecialchars(
 868                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_132x47.png"
 869                 );
 870                 $url2 = htmlspecialchars(
 871                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_176x62.png"
 872                 );
 873                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url1
 874                         . '" srcset="' . $url1_5 . ' 1.5x, ' . $url2 . ' 2x" '
 875                         . 'height="31" width="88" alt="Powered by MediaWiki" /></a>';
 876                 Hooks::run( 'SkinGetPoweredBy', [ &$text, $this ] );
 877                 return $text;
 878         }
 879
 880         /**
 881          * Get the timestamp of the latest revision, formatted in user language
 882          *
 883          * @return string
 884          */
 885         protected function lastModified() {
 886                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 887
 888                 # No cached timestamp, load it from the database
 889                 if ( $timestamp === null ) {
 890                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 891                 }
 892
 893                 if ( $timestamp ) {
 894                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 895                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 896                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->parse();
 897                 } else {
 898                         $s = '';
 899                 }
 900
 901                 if ( MediaWikiServices::getInstance()->getDBLoadBalancer()->getLaggedReplicaMode() ) {
 902                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->parse() . '</strong>';
 903                 }
 904
 905                 return $s;
 906         }
 907
 908         /**
 909          * @param string $align
 910          * @return string
 911          */
 912         function logoText( $align = '' ) {
 913                 if ( $align != '' ) {
 914                         $a = " style='float: {$align};'";
 915                 } else {
 916                         $a = '';
 917                 }
 918
 919                 $mp = $this->msg( 'mainpage' )->escaped();
 920                 $mptitle = Title::newMainPage();
 921                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 922
 923                 $logourl = $this->getLogo();
 924                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 925
 926                 return $s;
 927         }
 928
 929         /**
 930          * Renders a $wgFooterIcons icon according to the method's arguments
 931          * @param array $icon The icon to build the html for, see $wgFooterIcons
 932          *   for the format of this array.
 933          * @param bool|string $withImage Whether to use the icon's image or output
 934          *   a text-only footericon.
 935          * @return string HTML
 936          */
 937         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 938                 if ( is_string( $icon ) ) {
 939                         $html = $icon;
 940                 } else { // Assuming array
 941                         $url = isset( $icon["url"] ) ? $icon["url"] : null;
 942                         unset( $icon["url"] );
 943                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 944                                 // do this the lazy way, just pass icon data as an attribute array
 945                                 $html = Html::element( 'img', $icon );
 946                         } else {
 947                                 $html = htmlspecialchars( $icon["alt"] );
 948                         }
 949                         if ( $url ) {
 950                                 global $wgExternalLinkTarget;
 951                                 $html = Html::rawElement( 'a',
 952                                         [ "href" => $url, "target" => $wgExternalLinkTarget ],
 953                                         $html );
 954                         }
 955                 }
 956                 return $html;
 957         }
 958
 959         /**
 960          * Gets the link to the wiki's main page.
 961          * @return string
 962          */
 963         function mainPageLink() {
 964                 $s = Linker::linkKnown(
 965                         Title::newMainPage(),
 966                         $this->msg( 'mainpage' )->escaped()
 967                 );
 968
 969                 return $s;
 970         }
 971
 972         /**
 973          * Returns an HTML link for use in the footer
 974          * @param string $desc The i18n message key for the link text
 975          * @param string $page The i18n message key for the page to link to
 976          * @return string HTML anchor
 977          */
 978         public function footerLink( $desc, $page ) {
 979                 $title = $this->footerLinkTitle( $desc, $page );
 980                 if ( !$title ) {
 981                         return '';
 982                 }
 983
 984                 return Linker::linkKnown(
 985                         $title,
 986                         $this->msg( $desc )->escaped()
 987                 );
 988         }
 989
 990         /**
 991          * @param string $desc
 992          * @param string $page
 993          * @return Title|null
 994          */
 995         private function footerLinkTitle( $desc, $page ) {
 996                 // If the link description has been set to "-" in the default language,
 997                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
 998                         // then it is disabled, for all languages.
 999                         return null;
1000                 }
1001                 // Otherwise, we display the link for the user, described in their
1002                 // language (which may or may not be the same as the default language),
1003                 // but we make the link target be the one site-wide page.
1004                 $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
1005
1006                 return $title ?: null;
1007         }
1008
1009         /**
1010          * Gets the link to the wiki's privacy policy page.
1011          * @return string HTML
1012          */
1013         function privacyLink() {
1014                 return $this->footerLink( 'privacy', 'privacypage' );
1015         }
1016
1017         /**
1018          * Gets the link to the wiki's about page.
1019          * @return string HTML
1020          */
1021         function aboutLink() {
1022                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1023         }
1024
1025         /**
1026          * Gets the link to the wiki's general disclaimers page.
1027          * @return string HTML
1028          */
1029         function disclaimerLink() {
1030                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1031         }
1032
1033         /**
1034          * Return URL options for the 'edit page' link.
1035          * This may include an 'oldid' specifier, if the current page view is such.
1036          *
1037          * @return array
1038          * @private
1039          */
1040         function editUrlOptions() {
1041                 $options = [ 'action' => 'edit' ];
1042
1043                 if ( !$this->isRevisionCurrent() ) {
1044                         $options['oldid'] = intval( $this->getRevisionId() );
1045                 }
1046
1047                 return $options;
1048         }
1049
1050         /**
1051          * @param User|int $id
1052          * @return bool
1053          */
1054         function showEmailUser( $id ) {
1055                 if ( $id instanceof User ) {
1056                         $targetUser = $id;
1057                 } else {
1058                         $targetUser = User::newFromId( $id );
1059                 }
1060
1061                 # The sending user must have a confirmed email address and the receiving
1062                 # user must accept emails from the sender.
1063                 return $this->getUser()->canSendEmail()
1064                         && SpecialEmailUser::validateTarget( $targetUser, $this->getUser() ) === '';
1065         }
1066
1067         /**
1068          * Return a fully resolved style path url to images or styles stored in the current skins's folder.
1069          * This method returns a url resolved using the configured skin style path
1070          * and includes the style version inside of the url.
1071          *
1072          * Requires $stylename to be set, otherwise throws MWException.
1073          *
1074          * @param string $name The name or path of a skin resource file
1075          * @return string The fully resolved style path url including styleversion
1076          * @throws MWException
1077          */
1078         function getSkinStylePath( $name ) {
1079                 global $wgStylePath, $wgStyleVersion;
1080
1081                 if ( $this->stylename === null ) {
1082                         $class = static::class;
1083                         throw new MWException( "$class::\$stylename must be set to use getSkinStylePath()" );
1084                 }
1085
1086                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1087         }
1088
1089         /* these are used extensively in SkinTemplate, but also some other places */
1090
1091         /**
1092          * @param string|string[] $urlaction
1093          * @return string
1094          */
1095         static function makeMainPageUrl( $urlaction = '' ) {
1096                 $title = Title::newMainPage();
1097                 self::checkTitle( $title, '' );
1098
1099                 return $title->getLinkURL( $urlaction );
1100         }
1101
1102         /**
1103          * Make a URL for a Special Page using the given query and protocol.
1104          *
1105          * If $proto is set to null, make a local URL. Otherwise, make a full
1106          * URL with the protocol specified.
1107          *
1108          * @param string $name Name of the Special page
1109          * @param string|string[] $urlaction Query to append
1110          * @param string|null $proto Protocol to use or null for a local URL
1111          * @return string
1112          */
1113         static function makeSpecialUrl( $name, $urlaction = '', $proto = null ) {
1114                 $title = SpecialPage::getSafeTitleFor( $name );
1115                 if ( is_null( $proto ) ) {
1116                         return $title->getLocalURL( $urlaction );
1117                 } else {
1118                         return $title->getFullURL( $urlaction, false, $proto );
1119                 }
1120         }
1121
1122         /**
1123          * @param string $name
1124          * @param string $subpage
1125          * @param string|string[] $urlaction
1126          * @return string
1127          */
1128         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1129                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1130                 return $title->getLocalURL( $urlaction );
1131         }
1132
1133         /**
1134          * @param string $name
1135          * @param string|string[] $urlaction
1136          * @return string
1137          */
1138         static function makeI18nUrl( $name, $urlaction = '' ) {
1139                 $title = Title::newFromText( wfMessage( $name )->inContentLanguage()->text() );
1140                 self::checkTitle( $title, $name );
1141                 return $title->getLocalURL( $urlaction );
1142         }
1143
1144         /**
1145          * @param string $name
1146          * @param string|string[] $urlaction
1147          * @return string
1148          */
1149         static function makeUrl( $name, $urlaction = '' ) {
1150                 $title = Title::newFromText( $name );
1151                 self::checkTitle( $title, $name );
1152
1153                 return $title->getLocalURL( $urlaction );
1154         }
1155
1156         /**
1157          * If url string starts with http, consider as external URL, else
1158          * internal
1159          * @param string $name
1160          * @return string URL
1161          */
1162         static function makeInternalOrExternalUrl( $name ) {
1163                 if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $name ) ) {
1164                         return $name;
1165                 } else {
1166                         return self::makeUrl( $name );
1167                 }
1168         }
1169
1170         /**
1171          * this can be passed the NS number as defined in Language.php
1172          * @param string $name
1173          * @param string|string[] $urlaction
1174          * @param int $namespace
1175          * @return string
1176          */
1177         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1178                 $title = Title::makeTitleSafe( $namespace, $name );
1179                 self::checkTitle( $title, $name );
1180
1181                 return $title->getLocalURL( $urlaction );
1182         }
1183
1184         /**
1185          * these return an array with the 'href' and boolean 'exists'
1186          * @param string $name
1187          * @param string|string[] $urlaction
1188          * @return array
1189          */
1190         static function makeUrlDetails( $name, $urlaction = '' ) {
1191                 $title = Title::newFromText( $name );
1192                 self::checkTitle( $title, $name );
1193
1194                 return [
1195                         'href' => $title->getLocalURL( $urlaction ),
1196                         'exists' => $title->isKnown(),
1197                 ];
1198         }
1199
1200         /**
1201          * Make URL details where the article exists (or at least it's convenient to think so)
1202          * @param string $name Article name
1203          * @param string|string[] $urlaction
1204          * @return array
1205          */
1206         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1207                 $title = Title::newFromText( $name );
1208                 self::checkTitle( $title, $name );
1209
1210                 return [
1211                         'href' => $title->getLocalURL( $urlaction ),
1212                         'exists' => true
1213                 ];
1214         }
1215
1216         /**
1217          * make sure we have some title to operate on
1218          *
1219          * @param Title &$title
1220          * @param string $name
1221          */
1222         static function checkTitle( &$title, $name ) {
1223                 if ( !is_object( $title ) ) {
1224                         $title = Title::newFromText( $name );
1225                         if ( !is_object( $title ) ) {
1226                                 $title = Title::newFromText( '--error: link target missing--' );
1227                         }
1228                 }
1229         }
1230
1231         /**
1232          * Build an array that represents the sidebar(s), the navigation bar among them.
1233          *
1234          * BaseTemplate::getSidebar can be used to simplify the format and id generation in new skins.
1235          *
1236          * The format of the returned array is [ heading => content, ... ], where:
1237          * - heading is the heading of a navigation portlet. It is either:
1238          *   - magic string to be handled by the skins ('SEARCH' / 'LANGUAGES' / 'TOOLBOX' / ...)
1239          *   - a message name (e.g. 'navigation'), the message should be HTML-escaped by the skin
1240          *   - plain text, which should be HTML-escaped by the skin
1241          * - content is the contents of the portlet. It is either:
1242          *   - HTML text (<ul><li>...</li>...</ul>)
1243          *   - array of link data in a format accepted by BaseTemplate::makeListItem()
1244          *   - (for a magic string as a key, any value)
1245          *
1246          * Note that extensions can control the sidebar contents using the SkinBuildSidebar hook
1247          * and can technically insert anything in here; skin creators are expected to handle
1248          * values described above.
1249          *
1250          * @return array
1251          */
1252         public function buildSidebar() {
1253                 global $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1254
1255                 $callback = function ( $old = null, &$ttl = null ) {
1256                         $bar = [];
1257                         $this->addToSidebar( $bar, 'sidebar' );
1258                         Hooks::run( 'SkinBuildSidebar', [ $this, &$bar ] );
1259                         if ( MessageCache::singleton()->isDisabled() ) {
1260                                 $ttl = WANObjectCache::TTL_UNCACHEABLE; // bug T133069
1261                         }
1262
1263                         return $bar;
1264                 };
1265
1266                 $msgCache = MessageCache::singleton();
1267                 $wanCache = MediaWikiServices::getInstance()->getMainWANObjectCache();
1268
1269                 $sidebar = $wgEnableSidebarCache
1270                         ? $wanCache->getWithSetCallback(
1271                                 $wanCache->makeKey( 'sidebar', $this->getLanguage()->getCode() ),
1272                                 $wgSidebarCacheExpiry,
1273                                 $callback,
1274                                 [
1275                                         'checkKeys' => [
1276                                                 // Unless there is both no exact $code override nor an i18n definition
1277                                                 // in the the software, the only MediaWiki page to check is for $code.
1278                                                 $msgCache->getCheckKey( $this->getLanguage()->getCode() )
1279                                         ],
1280                                         'lockTSE' => 30
1281                                 ]
1282                         )
1283                         : $callback();
1284
1285                 // Apply post-processing to the cached value
1286                 Hooks::run( 'SidebarBeforeOutput', [ $this, &$sidebar ] );
1287
1288                 return $sidebar;
1289         }
1290
1291         /**
1292          * Add content from a sidebar system message
1293          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1294          *
1295          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1296          *
1297          * @param array &$bar
1298          * @param string $message
1299          */
1300         public function addToSidebar( &$bar, $message ) {
1301                 $this->addToSidebarPlain( $bar, wfMessage( $message )->inContentLanguage()->plain() );
1302         }
1303
1304         /**
1305          * Add content from plain text
1306          * @since 1.17
1307          * @param array &$bar
1308          * @param string $text
1309          * @return array
1310          */
1311         function addToSidebarPlain( &$bar, $text ) {
1312                 $lines = explode( "\n", $text );
1313
1314                 $heading = '';
1315                 $messageTitle = $this->getConfig()->get( 'EnableSidebarCache' )
1316                         ? Title::newMainPage() : $this->getTitle();
1317
1318                 foreach ( $lines as $line ) {
1319                         if ( strpos( $line, '*' ) !== 0 ) {
1320                                 continue;
1321                         }
1322                         $line = rtrim( $line, "\r" ); // for Windows compat
1323
1324                         if ( strpos( $line, '**' ) !== 0 ) {
1325                                 $heading = trim( $line, '* ' );
1326                                 if ( !array_key_exists( $heading, $bar ) ) {
1327                                         $bar[$heading] = [];
1328                                 }
1329                         } else {
1330                                 $line = trim( $line, '* ' );
1331
1332                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1333                                         $line = MessageCache::singleton()->transform( $line, false, null, $messageTitle );
1334                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1335                                         if ( count( $line ) !== 2 ) {
1336                                                 // Second sanity check, could be hit by people doing
1337                                                 // funky stuff with parserfuncs... (T35321)
1338                                                 continue;
1339                                         }
1340
1341                                         $extraAttribs = [];
1342
1343                                         $msgLink = $this->msg( $line[0] )->title( $messageTitle )->inContentLanguage();
1344                                         if ( $msgLink->exists() ) {
1345                                                 $link = $msgLink->text();
1346                                                 if ( $link == '-' ) {
1347                                                         continue;
1348                                                 }
1349                                         } else {
1350                                                 $link = $line[0];
1351                                         }
1352                                         $msgText = $this->msg( $line[1] )->title( $messageTitle );
1353                                         if ( $msgText->exists() ) {
1354                                                 $text = $msgText->text();
1355                                         } else {
1356                                                 $text = $line[1];
1357                                         }
1358
1359                                         if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $link ) ) {
1360                                                 $href = $link;
1361
1362                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1363                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1364                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1365                                                         $extraAttribs['rel'] = 'nofollow';
1366                                                 }
1367
1368                                                 global $wgExternalLinkTarget;
1369                                                 if ( $wgExternalLinkTarget ) {
1370                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1371                                                 }
1372                                         } else {
1373                                                 $title = Title::newFromText( $link );
1374
1375                                                 if ( $title ) {
1376                                                         $title = $title->fixSpecialName();
1377                                                         $href = $title->getLinkURL();
1378                                                 } else {
1379                                                         $href = 'INVALID-TITLE';
1380                                                 }
1381                                         }
1382
1383                                         $bar[$heading][] = array_merge( [
1384                                                 'text' => $text,
1385                                                 'href' => $href,
1386                                                 'id' => Sanitizer::escapeIdForAttribute( 'n-' . strtr( $line[1], ' ', '-' ) ),
1387                                                 'active' => false,
1388                                         ], $extraAttribs );
1389                                 } else {
1390                                         continue;
1391                                 }
1392                         }
1393                 }
1394
1395                 return $bar;
1396         }
1397
1398         /**
1399          * Gets new talk page messages for the current user and returns an
1400          * appropriate alert message (or an empty string if there are no messages)
1401          * @return string
1402          */
1403         function getNewtalks() {
1404                 $newMessagesAlert = '';
1405                 $user = $this->getUser();
1406                 $newtalks = $user->getNewMessageLinks();
1407                 $out = $this->getOutput();
1408
1409                 // Allow extensions to disable or modify the new messages alert
1410                 if ( !Hooks::run( 'GetNewMessagesAlert', [ &$newMessagesAlert, $newtalks, $user, $out ] ) ) {
1411                         return '';
1412                 }
1413                 if ( $newMessagesAlert ) {
1414                         return $newMessagesAlert;
1415                 }
1416
1417                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1418                         $uTalkTitle = $user->getTalkPage();
1419                         $lastSeenRev = isset( $newtalks[0]['rev'] ) ? $newtalks[0]['rev'] : null;
1420                         $nofAuthors = 0;
1421                         if ( $lastSeenRev !== null ) {
1422                                 $plural = true; // Default if we have a last seen revision: if unknown, use plural
1423                                 $latestRev = Revision::newFromTitle( $uTalkTitle, false, Revision::READ_NORMAL );
1424                                 if ( $latestRev !== null ) {
1425                                         // Singular if only 1 unseen revision, plural if several unseen revisions.
1426                                         $plural = $latestRev->getParentId() !== $lastSeenRev->getId();
1427                                         $nofAuthors = $uTalkTitle->countAuthorsBetween(
1428                                                 $lastSeenRev, $latestRev, 10, 'include_new' );
1429                                 }
1430                         } else {
1431                                 // Singular if no revision -> diff link will show latest change only in any case
1432                                 $plural = false;
1433                         }
1434                         $plural = $plural ? 999 : 1;
1435                         // 999 signifies "more than one revision". We don't know how many, and even if we did,
1436                         // the number of revisions or authors is not necessarily the same as the number of
1437                         // "messages".
1438                         $newMessagesLink = Linker::linkKnown(
1439                                 $uTalkTitle,
1440                                 $this->msg( 'newmessageslinkplural' )->params( $plural )->escaped(),
1441                                 [],
1442                                 [ 'redirect' => 'no' ]
1443                         );
1444
1445                         $newMessagesDiffLink = Linker::linkKnown(
1446                                 $uTalkTitle,
1447                                 $this->msg( 'newmessagesdifflinkplural' )->params( $plural )->escaped(),
1448                                 [],
1449                                 $lastSeenRev !== null
1450                                         ? [ 'oldid' => $lastSeenRev->getId(), 'diff' => 'cur' ]
1451                                         : [ 'diff' => 'cur' ]
1452                         );
1453
1454                         if ( $nofAuthors >= 1 && $nofAuthors <= 10 ) {
1455                                 $newMessagesAlert = $this->msg(
1456                                         'youhavenewmessagesfromusers',
1457                                         $newMessagesLink,
1458                                         $newMessagesDiffLink
1459                                 )->numParams( $nofAuthors, $plural );
1460                         } else {
1461                                 // $nofAuthors === 11 signifies "11 or more" ("more than 10")
1462                                 $newMessagesAlert = $this->msg(
1463                                         $nofAuthors > 10 ? 'youhavenewmessagesmanyusers' : 'youhavenewmessages',
1464                                         $newMessagesLink,
1465                                         $newMessagesDiffLink
1466                                 )->numParams( $plural );
1467                         }
1468                         $newMessagesAlert = $newMessagesAlert->text();
1469                         # Disable CDN cache
1470                         $out->setCdnMaxage( 0 );
1471                 } elseif ( count( $newtalks ) ) {
1472                         $sep = $this->msg( 'newtalkseparator' )->escaped();
1473                         $msgs = [];
1474
1475                         foreach ( $newtalks as $newtalk ) {
1476                                 $msgs[] = Xml::element(
1477                                         'a',
1478                                         [ 'href' => $newtalk['link'] ], $newtalk['wiki']
1479                                 );
1480                         }
1481                         $parts = implode( $sep, $msgs );
1482                         $newMessagesAlert = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1483                         $out->setCdnMaxage( 0 );
1484                 }
1485
1486                 return $newMessagesAlert;
1487         }
1488
1489         /**
1490          * Get a cached notice
1491          *
1492          * @param string $name Message name, or 'default' for $wgSiteNotice
1493          * @return string|bool HTML fragment, or false to indicate that the caller
1494          *   should fall back to the next notice in its sequence
1495          */
1496         private function getCachedNotice( $name ) {
1497                 global $wgRenderHashAppend, $wgContLang;
1498
1499                 $needParse = false;
1500
1501                 if ( $name === 'default' ) {
1502                         // special case
1503                         global $wgSiteNotice;
1504                         $notice = $wgSiteNotice;
1505                         if ( empty( $notice ) ) {
1506                                 return false;
1507                         }
1508                 } else {
1509                         $msg = $this->msg( $name )->inContentLanguage();
1510                         if ( $msg->isBlank() ) {
1511                                 return '';
1512                         } elseif ( $msg->isDisabled() ) {
1513                                 return false;
1514                         }
1515                         $notice = $msg->plain();
1516                 }
1517
1518                 $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
1519                 $parsed = $cache->getWithSetCallback(
1520                         // Use the extra hash appender to let eg SSL variants separately cache
1521                         // Key is verified with md5 hash of unparsed wikitext
1522                         $cache->makeKey( $name, $wgRenderHashAppend, md5( $notice ) ),
1523                         // TTL in seconds
1524                         600,
1525                         function () use ( $notice ) {
1526                                 return $this->getOutput()->parse( $notice );
1527                         }
1528                 );
1529
1530                 return Html::rawElement(
1531                         'div',
1532                         [
1533                                 'id' => 'localNotice',
1534                                 'lang' => $wgContLang->getHtmlCode(),
1535                                 'dir' => $wgContLang->getDir()
1536                         ],
1537                         $parsed
1538                 );
1539         }
1540
1541         /**
1542          * Get the site notice
1543          *
1544          * @return string HTML fragment
1545          */
1546         function getSiteNotice() {
1547                 $siteNotice = '';
1548
1549                 if ( Hooks::run( 'SiteNoticeBefore', [ &$siteNotice, $this ] ) ) {
1550                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1551                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1552                         } else {
1553                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1554                                 if ( $anonNotice === false ) {
1555                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1556                                 } else {
1557                                         $siteNotice = $anonNotice;
1558                                 }
1559                         }
1560                         if ( $siteNotice === false ) {
1561                                 $siteNotice = $this->getCachedNotice( 'default' );
1562                         }
1563                 }
1564
1565                 Hooks::run( 'SiteNoticeAfter', [ &$siteNotice, $this ] );
1566                 return $siteNotice;
1567         }
1568
1569         /**
1570          * Create a section edit link.  This supersedes editSectionLink() and
1571          * editSectionLinkForOther().
1572          *
1573          * @param Title $nt The title being linked to (may not be the same as
1574          *   the current page, if the section is included from a template)
1575          * @param string $section The designation of the section being pointed to,
1576          *   to be included in the link, like "&section=$section"
1577          * @param string $tooltip The tooltip to use for the link: will be escaped
1578          *   and wrapped in the 'editsectionhint' message
1579          * @param string $lang Language code
1580          * @return string HTML to use for edit link
1581          */
1582         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1583                 // HTML generated here should probably have userlangattributes
1584                 // added to it for LTR text on RTL pages
1585
1586                 $lang = wfGetLangObj( $lang );
1587
1588                 $attribs = [];
1589                 if ( !is_null( $tooltip ) ) {
1590                         $attribs['title'] = wfMessage( 'editsectionhint' )->rawParams( $tooltip )
1591                                 ->inLanguage( $lang )->text();
1592                 }
1593
1594                 $links = [
1595                         'editsection' => [
1596                                 'text' => wfMessage( 'editsection' )->inLanguage( $lang )->escaped(),
1597                                 'targetTitle' => $nt,
1598                                 'attribs' => $attribs,
1599                                 'query' => [ 'action' => 'edit', 'section' => $section ],
1600                                 'options' => [ 'noclasses', 'known' ]
1601                         ]
1602                 ];
1603
1604                 Hooks::run( 'SkinEditSectionLinks', [ $this, $nt, $section, $tooltip, &$links, $lang ] );
1605
1606                 $result = '<span class="mw-editsection"><span class="mw-editsection-bracket">[</span>';
1607
1608                 $linksHtml = [];
1609                 foreach ( $links as $k => $linkDetails ) {
1610                         $linksHtml[] = Linker::link(
1611                                 $linkDetails['targetTitle'],
1612                                 $linkDetails['text'],
1613                                 $linkDetails['attribs'],
1614                                 $linkDetails['query'],
1615                                 $linkDetails['options']
1616                         );
1617                 }
1618
1619                 $result .= implode(
1620                         '<span class="mw-editsection-divider">'
1621                                 . wfMessage( 'pipe-separator' )->inLanguage( $lang )->escaped()
1622                                 . '</span>',
1623                         $linksHtml
1624                 );
1625
1626                 $result .= '<span class="mw-editsection-bracket">]</span></span>';
1627                 // Deprecated, use SkinEditSectionLinks hook instead
1628                 Hooks::run(
1629                         'DoEditSectionLink',
1630                         [ $this, $nt, $section, $tooltip, &$result, $lang ],
1631                         '1.25'
1632                 );
1633                 return $result;
1634         }
1635
1636 }