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 /**
  24  * @defgroup Skins Skins
  25  */
  26
  27 /**
  28  * The main skin class which provides methods and properties for all other skins.
  29  *
  30  * See docs/skin.txt for more information.
  31  *
  32  * @ingroup Skins
  33  */
  34 abstract class Skin extends ContextSource {
  35         protected $skinname = null;
  36         protected $mRelevantTitle = null;
  37         protected $mRelevantUser = null;
  38
  39         /**
  40          * @var string Stylesheets set to use. Subdirectory in skins/ where various stylesheets are
  41          *   located. Only needs to be set if you intend to use the getSkinStylePath() method.
  42          */
  43         public $stylename = null;
  44
  45         /**
  46          * Fetch the set of available skins.
  47          * @return array Associative array of strings
  48          */
  49         static function getSkinNames() {
  50                 return SkinFactory::getDefaultInstance()->getSkinNames();
  51         }
  52
  53         /**
  54          * Fetch the skinname messages for available skins.
  55          * @return string[]
  56          */
  57         static function getSkinNameMessages() {
  58                 $messages = [];
  59                 foreach ( self::getSkinNames() as $skinKey => $skinName ) {
  60                         $messages[] = "skinname-$skinKey";
  61                 }
  62                 return $messages;
  63         }
  64
  65         /**
  66          * Fetch the list of user-selectable skins in regards to $wgSkipSkins.
  67          * Useful for Special:Preferences and other places where you
  68          * only want to show skins users _can_ use.
  69          * @return string[]
  70          * @since 1.23
  71          */
  72         public static function getAllowedSkins() {
  73                 global $wgSkipSkins;
  74
  75                 $allowedSkins = self::getSkinNames();
  76
  77                 foreach ( $wgSkipSkins as $skip ) {
  78                         unset( $allowedSkins[$skip] );
  79                 }
  80
  81                 return $allowedSkins;
  82         }
  83
  84         /**
  85          * Normalize a skin preference value to a form that can be loaded.
  86          *
  87          * If a skin can't be found, it will fall back to the configured default ($wgDefaultSkin), or the
  88          * hardcoded default ($wgFallbackSkin) if the default skin is unavailable too.
  89          *
  90          * @param string $key 'monobook', 'vector', etc.
  91          * @return string
  92          */
  93         static function normalizeKey( $key ) {
  94                 global $wgDefaultSkin, $wgFallbackSkin;
  95
  96                 $skinNames = Skin::getSkinNames();
  97
  98                 // Make keys lowercase for case-insensitive matching.
  99                 $skinNames = array_change_key_case( $skinNames, CASE_LOWER );
 100                 $key = strtolower( $key );
 101                 $defaultSkin = strtolower( $wgDefaultSkin );
 102                 $fallbackSkin = strtolower( $wgFallbackSkin );
 103
 104                 if ( $key == '' || $key == 'default' ) {
 105                         // Don't return the default immediately;
 106                         // in a misconfiguration we need to fall back.
 107                         $key = $defaultSkin;
 108                 }
 109
 110                 if ( isset( $skinNames[$key] ) ) {
 111                         return $key;
 112                 }
 113
 114                 // Older versions of the software used a numeric setting
 115                 // in the user preferences.
 116                 $fallback = [
 117                         0 => $defaultSkin,
 118                         2 => 'cologneblue'
 119                 ];
 120
 121                 if ( isset( $fallback[$key] ) ) {
 122                         $key = $fallback[$key];
 123                 }
 124
 125                 if ( isset( $skinNames[$key] ) ) {
 126                         return $key;
 127                 } elseif ( isset( $skinNames[$defaultSkin] ) ) {
 128                         return $defaultSkin;
 129                 } else {
 130                         return $fallbackSkin;
 131                 }
 132         }
 133
 134         /**
 135          * @return string Skin name
 136          */
 137         public function getSkinName() {
 138                 return $this->skinname;
 139         }
 140
 141         /**
 142          * @param OutputPage $out
 143          */
 144         function initPage( OutputPage $out ) {
 145
 146                 $this->preloadExistence();
 147
 148         }
 149
 150         /**
 151          * Defines the ResourceLoader modules that should be added to the skin
 152          * It is recommended that skins wishing to override call parent::getDefaultModules()
 153          * and substitute out any modules they wish to change by using a key to look them up
 154          * @return array Array of modules with helper keys for easy overriding
 155          */
 156         public function getDefaultModules() {
 157                 global $wgUseAjax, $wgEnableAPI, $wgEnableWriteAPI;
 158
 159                 $out = $this->getOutput();
 160                 $user = $out->getUser();
 161                 $modules = [
 162                         // modules that enhance the page content in some way
 163                         'content' => [
 164                                 'mediawiki.page.ready',
 165                         ],
 166                         // modules that exist for legacy reasons
 167                         'legacy' => ResourceLoaderStartUpModule::getLegacyModules(),
 168                         // modules relating to search functionality
 169                         'search' => [],
 170                         // modules relating to functionality relating to watching an article
 171                         'watch' => [],
 172                         // modules which relate to the current users preferences
 173                         'user' => [],
 174                 ];
 175
 176                 // Add various resources if required
 177                 if ( $wgUseAjax && $wgEnableAPI ) {
 178                         if ( $wgEnableWriteAPI && $user->isLoggedIn()
 179                                 && $user->isAllowedAll( 'writeapi', 'viewmywatchlist', 'editmywatchlist' )
 180                                 && $this->getRelevantTitle()->canExist()
 181                         ) {
 182                                 $modules['watch'][] = 'mediawiki.page.watch.ajax';
 183                         }
 184
 185                         $modules['search'][] = 'mediawiki.searchSuggest';
 186                 }
 187
 188                 if ( $user->getBoolOption( 'editsectiononrightclick' ) ) {
 189                         $modules['user'][] = 'mediawiki.action.view.rightClickEdit';
 190                 }
 191
 192                 // Crazy edit-on-double-click stuff
 193                 if ( $out->isArticle() && $user->getOption( 'editondblclick' ) ) {
 194                         $modules['user'][] = 'mediawiki.action.view.dblClickEdit';
 195                 }
 196                 return $modules;
 197         }
 198
 199         /**
 200          * Preload the existence of three commonly-requested pages in a single query
 201          */
 202         function preloadExistence() {
 203                 $titles = [];
 204
 205                 $user = $this->getUser();
 206                 $title = $this->getRelevantTitle();
 207
 208                 // User/talk link
 209                 if ( $user->isLoggedIn() ) {
 210                         $titles[] = $user->getUserPage();
 211                         $titles[] = $user->getTalkPage();
 212                 }
 213
 214                 // Check, if the page can hold some kind of content, otherwise do nothing
 215                 if ( !$title->canExist() ) {
 216                         // nothing
 217                 } elseif ( $title->isTalkPage() ) {
 218                         $titles[] = $title->getSubjectPage();
 219                 } else {
 220                         $titles[] = $title->getTalkPage();
 221                 }
 222
 223                 Hooks::run( 'SkinPreloadExistence', [ &$titles, $this ] );
 224
 225                 if ( count( $titles ) ) {
 226                         $lb = new LinkBatch( $titles );
 227                         $lb->setCaller( __METHOD__ );
 228                         $lb->execute();
 229                 }
 230         }
 231
 232         /**
 233          * Get the current revision ID
 234          *
 235          * @return int
 236          */
 237         public function getRevisionId() {
 238                 return $this->getOutput()->getRevisionId();
 239         }
 240
 241         /**
 242          * Whether the revision displayed is the latest revision of the page
 243          *
 244          * @return bool
 245          */
 246         public function isRevisionCurrent() {
 247                 $revID = $this->getRevisionId();
 248                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 249         }
 250
 251         /**
 252          * Set the "relevant" title
 253          * @see self::getRelevantTitle()
 254          * @param Title $t
 255          */
 256         public function setRelevantTitle( $t ) {
 257                 $this->mRelevantTitle = $t;
 258         }
 259
 260         /**
 261          * Return the "relevant" title.
 262          * A "relevant" title is not necessarily the actual title of the page.
 263          * Special pages like Special:MovePage use set the page they are acting on
 264          * as their "relevant" title, this allows the skin system to display things
 265          * such as content tabs which belong to to that page instead of displaying
 266          * a basic special page tab which has almost no meaning.
 267          *
 268          * @return Title
 269          */
 270         public function getRelevantTitle() {
 271                 if ( isset( $this->mRelevantTitle ) ) {
 272                         return $this->mRelevantTitle;
 273                 }
 274                 return $this->getTitle();
 275         }
 276
 277         /**
 278          * Set the "relevant" user
 279          * @see self::getRelevantUser()
 280          * @param User $u
 281          */
 282         public function setRelevantUser( $u ) {
 283                 $this->mRelevantUser = $u;
 284         }
 285
 286         /**
 287          * Return the "relevant" user.
 288          * A "relevant" user is similar to a relevant title. Special pages like
 289          * Special:Contributions mark the user which they are relevant to so that
 290          * things like the toolbox can display the information they usually are only
 291          * able to display on a user's userpage and talkpage.
 292          * @return User
 293          */
 294         public function getRelevantUser() {
 295                 if ( isset( $this->mRelevantUser ) ) {
 296                         return $this->mRelevantUser;
 297                 }
 298                 $title = $this->getRelevantTitle();
 299                 if ( $title->hasSubjectNamespace( NS_USER ) ) {
 300                         $rootUser = $title->getRootText();
 301                         if ( User::isIP( $rootUser ) ) {
 302                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 303                         } else {
 304                                 $user = User::newFromName( $rootUser, false );
 305
 306                                 if ( $user ) {
 307                                         $user->load( User::READ_NORMAL );
 308
 309                                         if ( $user->isLoggedIn() ) {
 310                                                 $this->mRelevantUser = $user;
 311                                         }
 312                                 }
 313                         }
 314                         return $this->mRelevantUser;
 315                 }
 316                 return null;
 317         }
 318
 319         /**
 320          * Outputs the HTML generated by other functions.
 321          * @param OutputPage $out
 322          */
 323         abstract function outputPage( OutputPage $out = null );
 324
 325         /**
 326          * @param array $data
 327          * @return string
 328          */
 329         static function makeVariablesScript( $data ) {
 330                 if ( $data ) {
 331                         return ResourceLoader::makeInlineScript(
 332                                 ResourceLoader::makeConfigSetScript( $data )
 333                         );
 334                 } else {
 335                         return '';
 336                 }
 337         }
 338
 339         /**
 340          * Get the query to generate a dynamic stylesheet
 341          *
 342          * @return array
 343          */
 344         public static function getDynamicStylesheetQuery() {
 345                 global $wgSquidMaxage;
 346
 347                 return [
 348                                 'action' => 'raw',
 349                                 'maxage' => $wgSquidMaxage,
 350                                 'usemsgcache' => 'yes',
 351                                 'ctype' => 'text/css',
 352                                 'smaxage' => $wgSquidMaxage,
 353                         ];
 354         }
 355
 356         /**
 357          * Add skin specific stylesheets
 358          * Calling this method with an $out of anything but the same OutputPage
 359          * inside ->getOutput() is deprecated. The $out arg is kept
 360          * for compatibility purposes with skins.
 361          * @param OutputPage $out
 362          * @todo delete
 363          */
 364         abstract function setupSkinUserCss( OutputPage $out );
 365
 366         /**
 367          * TODO: document
 368          * @param Title $title
 369          * @return string
 370          */
 371         function getPageClasses( $title ) {
 372                 $numeric = 'ns-' . $title->getNamespace();
 373
 374                 if ( $title->isSpecialPage() ) {
 375                         $type = 'ns-special';
 376                         // bug 23315: provide a class based on the canonical special page name without subpages
 377                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 378                         if ( $canonicalName ) {
 379                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 380                         } else {
 381                                 $type .= ' mw-invalidspecialpage';
 382                         }
 383                 } elseif ( $title->isTalkPage() ) {
 384                         $type = 'ns-talk';
 385                 } else {
 386                         $type = 'ns-subject';
 387                 }
 388
 389                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 390                 $root = Sanitizer::escapeClass( 'rootpage-' . $title->getRootTitle()->getPrefixedText() );
 391
 392                 return "$numeric $type $name $root";
 393         }
 394
 395         /**
 396          * Return values for <html> element
 397          * @return array Array of associative name-to-value elements for <html> element
 398          */
 399         public function getHtmlElementAttributes() {
 400                 $lang = $this->getLanguage();
 401                 return [
 402                         'lang' => $lang->getHtmlCode(),
 403                         'dir' => $lang->getDir(),
 404                         'class' => 'client-nojs',
 405                 ];
 406         }
 407
 408         /**
 409          * This will be called by OutputPage::headElement when it is creating the
 410          * "<body>" tag, skins can override it if they have a need to add in any
 411          * body attributes or classes of their own.
 412          * @param OutputPage $out
 413          * @param array $bodyAttrs
 414          */
 415         function addToBodyAttributes( $out, &$bodyAttrs ) {
 416                 // does nothing by default
 417         }
 418
 419         /**
 420          * URL to the logo
 421          * @return string
 422          */
 423         function getLogo() {
 424                 global $wgLogo;
 425                 return $wgLogo;
 426         }
 427
 428         /**
 429          * @return string HTML
 430          */
 431         function getCategoryLinks() {
 432                 global $wgUseCategoryBrowser;
 433
 434                 $out = $this->getOutput();
 435                 $allCats = $out->getCategoryLinks();
 436
 437                 if ( !count( $allCats ) ) {
 438                         return '';
 439                 }
 440
 441                 $embed = "<li>";
 442                 $pop = "</li>";
 443
 444                 $s = '';
 445                 $colon = $this->msg( 'colon-separator' )->escaped();
 446
 447                 if ( !empty( $allCats['normal'] ) ) {
 448                         $t = $embed . implode( "{$pop}{$embed}", $allCats['normal'] ) . $pop;
 449
 450                         $msg = $this->msg( 'pagecategories' )->numParams( count( $allCats['normal'] ) )->escaped();
 451                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 452                         $title = Title::newFromText( $linkPage );
 453                         $link = $title ? Linker::link( $title, $msg ) : $msg;
 454                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 455                                 $link . $colon . '<ul>' . $t . '</ul>' . '</div>';
 456                 }
 457
 458                 # Hidden categories
 459                 if ( isset( $allCats['hidden'] ) ) {
 460                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 461                                 $class = ' mw-hidden-cats-user-shown';
 462                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 463                                 $class = ' mw-hidden-cats-ns-shown';
 464                         } else {
 465                                 $class = ' mw-hidden-cats-hidden';
 466                         }
 467
 468                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 469                                 $this->msg( 'hidden-categories' )->numParams( count( $allCats['hidden'] ) )->escaped() .
 470                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}", $allCats['hidden'] ) . $pop . '</ul>' .
 471                                 '</div>';
 472                 }
 473
 474                 # optional 'dmoz-like' category browser. Will be shown under the list
 475                 # of categories an article belong to
 476                 if ( $wgUseCategoryBrowser ) {
 477                         $s .= '<br /><hr />';
 478
 479                         # get a big array of the parents tree
 480                         $parenttree = $this->getTitle()->getParentCategoryTree();
 481                         # Skin object passed by reference cause it can not be
 482                         # accessed under the method subfunction drawCategoryBrowser
 483                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 484                         # Clean out bogus first entry and sort them
 485                         unset( $tempout[0] );
 486                         asort( $tempout );
 487                         # Output one per line
 488                         $s .= implode( "<br />\n", $tempout );
 489                 }
 490
 491                 return $s;
 492         }
 493
 494         /**
 495          * Render the array as a series of links.
 496          * @param array $tree Categories tree returned by Title::getParentCategoryTree
 497          * @return string Separated by &gt;, terminate with "\n"
 498          */
 499         function drawCategoryBrowser( $tree ) {
 500                 $return = '';
 501
 502                 foreach ( $tree as $element => $parent ) {
 503                         if ( empty( $parent ) ) {
 504                                 # element start a new list
 505                                 $return .= "\n";
 506                         } else {
 507                                 # grab the others elements
 508                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 509                         }
 510
 511                         # add our current element to the list
 512                         $eltitle = Title::newFromText( $element );
 513                         $return .= Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 514                 }
 515
 516                 return $return;
 517         }
 518
 519         /**
 520          * @return string HTML
 521          */
 522         function getCategories() {
 523                 $out = $this->getOutput();
 524                 $catlinks = $this->getCategoryLinks();
 525
 526                 // Check what we're showing
 527                 $allCats = $out->getCategoryLinks();
 528                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 529                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 530
 531                 $classes = [ 'catlinks' ];
 532                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 533                         $classes[] = 'catlinks-allhidden';
 534                 }
 535
 536                 return Html::rawElement(
 537                         'div',
 538                         [ 'id' => 'catlinks', 'class' => $classes, 'data-mw' => 'interface' ],
 539                         $catlinks
 540                 );
 541         }
 542
 543         /**
 544          * This runs a hook to allow extensions placing their stuff after content
 545          * and article metadata (e.g. categories).
 546          * Note: This function has nothing to do with afterContent().
 547          *
 548          * This hook is placed here in order to allow using the same hook for all
 549          * skins, both the SkinTemplate based ones and the older ones, which directly
 550          * use this class to get their data.
 551          *
 552          * The output of this function gets processed in SkinTemplate::outputPage() for
 553          * the SkinTemplate based skins, all other skins should directly echo it.
 554          *
 555          * @return string Empty by default, if not changed by any hook function.
 556          */
 557         protected function afterContentHook() {
 558                 $data = '';
 559
 560                 if ( Hooks::run( 'SkinAfterContent', [ &$data, $this ] ) ) {
 561                         // adding just some spaces shouldn't toggle the output
 562                         // of the whole <div/>, so we use trim() here
 563                         if ( trim( $data ) != '' ) {
 564                                 // Doing this here instead of in the skins to
 565                                 // ensure that the div has the same ID in all
 566                                 // skins
 567                                 $data = "<div id='mw-data-after-content'>\n" .
 568                                         "\t$data\n" .
 569                                         "</div>\n";
 570                         }
 571                 } else {
 572                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 573                 }
 574
 575                 return $data;
 576         }
 577
 578         /**
 579          * Generate debug data HTML for displaying at the bottom of the main content
 580          * area.
 581          * @return string HTML containing debug data, if enabled (otherwise empty).
 582          */
 583         protected function generateDebugHTML() {
 584                 return MWDebug::getHTMLDebugLog();
 585         }
 586
 587         /**
 588          * This gets called shortly before the "</body>" tag.
 589          *
 590          * @return string HTML-wrapped JS code to be put before "</body>"
 591          */
 592         function bottomScripts() {
 593                 // TODO and the suckage continues. This function is really just a wrapper around
 594                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 595                 // up at some point
 596                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 597                 Hooks::run( 'SkinAfterBottomScripts', [ $this, &$bottomScriptText ] );
 598
 599                 return $bottomScriptText;
 600         }
 601
 602         /**
 603          * Text with the permalink to the source page,
 604          * usually shown on the footer of a printed page
 605          *
 606          * @return string HTML text with an URL
 607          */
 608         function printSource() {
 609                 $oldid = $this->getRevisionId();
 610                 if ( $oldid ) {
 611                         $canonicalUrl = $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid );
 612                         $url = htmlspecialchars( wfExpandIRI( $canonicalUrl ) );
 613                 } else {
 614                         // oldid not available for non existing pages
 615                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
 616                 }
 617
 618                 return $this->msg( 'retrievedfrom' )
 619                         ->rawParams( '<a dir="ltr" href="' . $url . '">' . $url . '</a>' )
 620                         ->parse();
 621         }
 622
 623         /**
 624          * @return string HTML
 625          */
 626         function getUndeleteLink() {
 627                 $action = $this->getRequest()->getVal( 'action', 'view' );
 628
 629                 if ( $this->getTitle()->userCan( 'deletedhistory', $this->getUser() ) &&
 630                         ( !$this->getTitle()->exists() || $action == 'history' ) ) {
 631                         $n = $this->getTitle()->isDeleted();
 632
 633                         if ( $n ) {
 634                                 if ( $this->getTitle()->quickUserCan( 'undelete', $this->getUser() ) ) {
 635                                         $msg = 'thisisdeleted';
 636                                 } else {
 637                                         $msg = 'viewdeleted';
 638                                 }
 639
 640                                 return $this->msg( $msg )->rawParams(
 641                                         Linker::linkKnown(
 642                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 643                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 644                                         )->escaped();
 645                         }
 646                 }
 647
 648                 return '';
 649         }
 650
 651         /**
 652          * @return string
 653          */
 654         function subPageSubtitle() {
 655                 $out = $this->getOutput();
 656                 $subpages = '';
 657
 658                 if ( !Hooks::run( 'SkinSubPageSubtitle', [ &$subpages, $this, $out ] ) ) {
 659                         return $subpages;
 660                 }
 661
 662                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 663                         $ptext = $this->getTitle()->getPrefixedText();
 664                         if ( preg_match( '/\//', $ptext ) ) {
 665                                 $links = explode( '/', $ptext );
 666                                 array_pop( $links );
 667                                 $c = 0;
 668                                 $growinglink = '';
 669                                 $display = '';
 670                                 $lang = $this->getLanguage();
 671
 672                                 foreach ( $links as $link ) {
 673                                         $growinglink .= $link;
 674                                         $display .= $link;
 675                                         $linkObj = Title::newFromText( $growinglink );
 676
 677                                         if ( is_object( $linkObj ) && $linkObj->isKnown() ) {
 678                                                 $getlink = Linker::linkKnown(
 679                                                         $linkObj,
 680                                                         htmlspecialchars( $display )
 681                                                 );
 682
 683                                                 $c++;
 684
 685                                                 if ( $c > 1 ) {
 686                                                         $subpages .= $lang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
 687                                                 } else {
 688                                                         $subpages .= '&lt; ';
 689                                                 }
 690
 691                                                 $subpages .= $getlink;
 692                                                 $display = '';
 693                                         } else {
 694                                                 $display .= '/';
 695                                         }
 696                                         $growinglink .= '/';
 697                                 }
 698                         }
 699                 }
 700
 701                 return $subpages;
 702         }
 703
 704         /**
 705          * @deprecated since 1.27, feature removed
 706          * @return bool Always false
 707          */
 708         function showIPinHeader() {
 709                 wfDeprecated( __METHOD__, '1.27' );
 710                 return false;
 711         }
 712
 713         /**
 714          * @return string
 715          */
 716         function getSearchLink() {
 717                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 718                 return $searchPage->getLocalURL();
 719         }
 720
 721         /**
 722          * @return string
 723          */
 724         function escapeSearchLink() {
 725                 return htmlspecialchars( $this->getSearchLink() );
 726         }
 727
 728         /**
 729          * @param string $type
 730          * @return string
 731          */
 732         function getCopyright( $type = 'detect' ) {
 733                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 734
 735                 if ( $type == 'detect' ) {
 736                         if ( !$this->isRevisionCurrent()
 737                                 && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled()
 738                         ) {
 739                                 $type = 'history';
 740                         } else {
 741                                 $type = 'normal';
 742                         }
 743                 }
 744
 745                 if ( $type == 'history' ) {
 746                         $msg = 'history_copyright';
 747                 } else {
 748                         $msg = 'copyright';
 749                 }
 750
 751                 if ( $wgRightsPage ) {
 752                         $title = Title::newFromText( $wgRightsPage );
 753                         $link = Linker::linkKnown( $title, $wgRightsText );
 754                 } elseif ( $wgRightsUrl ) {
 755                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 756                 } elseif ( $wgRightsText ) {
 757                         $link = $wgRightsText;
 758                 } else {
 759                         # Give up now
 760                         return '';
 761                 }
 762
 763                 // Allow for site and per-namespace customization of copyright notice.
 764                 // @todo Remove deprecated $forContent param from hook handlers and then remove here.
 765                 $forContent = true;
 766
 767                 Hooks::run(
 768                         'SkinCopyrightFooter',
 769                         [ $this->getTitle(), $type, &$msg, &$link, &$forContent ]
 770                 );
 771
 772                 return $this->msg( $msg )->rawParams( $link )->text();
 773         }
 774
 775         /**
 776          * @return null|string
 777          */
 778         function getCopyrightIcon() {
 779                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgFooterIcons;
 780
 781                 $out = '';
 782
 783                 if ( $wgFooterIcons['copyright']['copyright'] ) {
 784                         $out = $wgFooterIcons['copyright']['copyright'];
 785                 } elseif ( $wgRightsIcon ) {
 786                         $icon = htmlspecialchars( $wgRightsIcon );
 787
 788                         if ( $wgRightsUrl ) {
 789                                 $url = htmlspecialchars( $wgRightsUrl );
 790                                 $out .= '<a href="' . $url . '">';
 791                         }
 792
 793                         $text = htmlspecialchars( $wgRightsText );
 794                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 795
 796                         if ( $wgRightsUrl ) {
 797                                 $out .= '</a>';
 798                         }
 799                 }
 800
 801                 return $out;
 802         }
 803
 804         /**
 805          * Gets the powered by MediaWiki icon.
 806          * @return string
 807          */
 808         function getPoweredBy() {
 809                 global $wgResourceBasePath;
 810
 811                 $url1 = htmlspecialchars(
 812                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_88x31.png"
 813                 );
 814                 $url1_5 = htmlspecialchars(
 815                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_132x47.png"
 816                 );
 817                 $url2 = htmlspecialchars(
 818                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_176x62.png"
 819                 );
 820                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url1
 821                         . '" srcset="' . $url1_5 . ' 1.5x, ' . $url2 . ' 2x" '
 822                         . 'height="31" width="88" alt="Powered by MediaWiki" /></a>';
 823                 Hooks::run( 'SkinGetPoweredBy', [ &$text, $this ] );
 824                 return $text;
 825         }
 826
 827         /**
 828          * Get the timestamp of the latest revision, formatted in user language
 829          *
 830          * @return string
 831          */
 832         protected function lastModified() {
 833                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 834
 835                 # No cached timestamp, load it from the database
 836                 if ( $timestamp === null ) {
 837                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 838                 }
 839
 840                 if ( $timestamp ) {
 841                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 842                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 843                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->parse();
 844                 } else {
 845                         $s = '';
 846                 }
 847
 848                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 849                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->parse() . '</strong>';
 850                 }
 851
 852                 return $s;
 853         }
 854
 855         /**
 856          * @param string $align
 857          * @return string
 858          */
 859         function logoText( $align = '' ) {
 860                 if ( $align != '' ) {
 861                         $a = " style='float: {$align};'";
 862                 } else {
 863                         $a = '';
 864                 }
 865
 866                 $mp = $this->msg( 'mainpage' )->escaped();
 867                 $mptitle = Title::newMainPage();
 868                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 869
 870                 $logourl = $this->getLogo();
 871                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 872
 873                 return $s;
 874         }
 875
 876         /**
 877          * Renders a $wgFooterIcons icon according to the method's arguments
 878          * @param array $icon The icon to build the html for, see $wgFooterIcons
 879          *   for the format of this array.
 880          * @param bool|string $withImage Whether to use the icon's image or output
 881          *   a text-only footericon.
 882          * @return string HTML
 883          */
 884         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 885                 if ( is_string( $icon ) ) {
 886                         $html = $icon;
 887                 } else { // Assuming array
 888                         $url = isset( $icon["url"] ) ? $icon["url"] : null;
 889                         unset( $icon["url"] );
 890                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 891                                 // do this the lazy way, just pass icon data as an attribute array
 892                                 $html = Html::element( 'img', $icon );
 893                         } else {
 894                                 $html = htmlspecialchars( $icon["alt"] );
 895                         }
 896                         if ( $url ) {
 897                                 $html = Html::rawElement( 'a', [ "href" => $url ], $html );
 898                         }
 899                 }
 900                 return $html;
 901         }
 902
 903         /**
 904          * Gets the link to the wiki's main page.
 905          * @return string
 906          */
 907         function mainPageLink() {
 908                 $s = Linker::linkKnown(
 909                         Title::newMainPage(),
 910                         $this->msg( 'mainpage' )->escaped()
 911                 );
 912
 913                 return $s;
 914         }
 915
 916         /**
 917          * Returns an HTML link for use in the footer
 918          * @param string $desc The i18n message key for the link text
 919          * @param string $page The i18n message key for the page to link to
 920          * @return string HTML anchor
 921          */
 922         public function footerLink( $desc, $page ) {
 923                 // if the link description has been set to "-" in the default language,
 924                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
 925                         // then it is disabled, for all languages.
 926                         return '';
 927                 } else {
 928                         // Otherwise, we display the link for the user, described in their
 929                         // language (which may or may not be the same as the default language),
 930                         // but we make the link target be the one site-wide page.
 931                         $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
 932
 933                         if ( !$title ) {
 934                                 return '';
 935                         }
 936
 937                         return Linker::linkKnown(
 938                                 $title,
 939                                 $this->msg( $desc )->escaped()
 940                         );
 941                 }
 942         }
 943
 944         /**
 945          * Gets the link to the wiki's privacy policy page.
 946          * @return string HTML
 947          */
 948         function privacyLink() {
 949                 return $this->footerLink( 'privacy', 'privacypage' );
 950         }
 951
 952         /**
 953          * Gets the link to the wiki's about page.
 954          * @return string HTML
 955          */
 956         function aboutLink() {
 957                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 958         }
 959
 960         /**
 961          * Gets the link to the wiki's general disclaimers page.
 962          * @return string HTML
 963          */
 964         function disclaimerLink() {
 965                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
 966         }
 967
 968         /**
 969          * Return URL options for the 'edit page' link.
 970          * This may include an 'oldid' specifier, if the current page view is such.
 971          *
 972          * @return array
 973          * @private
 974          */
 975         function editUrlOptions() {
 976                 $options = [ 'action' => 'edit' ];
 977
 978                 if ( !$this->isRevisionCurrent() ) {
 979                         $options['oldid'] = intval( $this->getRevisionId() );
 980                 }
 981
 982                 return $options;
 983         }
 984
 985         /**
 986          * @param User|int $id
 987          * @return bool
 988          */
 989         function showEmailUser( $id ) {
 990                 if ( $id instanceof User ) {
 991                         $targetUser = $id;
 992                 } else {
 993                         $targetUser = User::newFromId( $id );
 994                 }
 995
 996                 # The sending user must have a confirmed email address and the target
 997                 # user must have a confirmed email address and allow emails from users.
 998                 return $this->getUser()->canSendEmail() &&
 999                         $targetUser->canReceiveEmail();
1000         }
1001
1002         /**
1003          * Return a fully resolved style path url to images or styles stored in the current skins's folder.
1004          * This method returns a url resolved using the configured skin style path
1005          * and includes the style version inside of the url.
1006          *
1007          * Requires $stylename to be set, otherwise throws MWException.
1008          *
1009          * @param string $name The name or path of a skin resource file
1010          * @return string The fully resolved style path url including styleversion
1011          * @throws MWException
1012          */
1013         function getSkinStylePath( $name ) {
1014                 global $wgStylePath, $wgStyleVersion;
1015
1016                 if ( $this->stylename === null ) {
1017                         $class = get_class( $this );
1018                         throw new MWException( "$class::\$stylename must be set to use getSkinStylePath()" );
1019                 }
1020
1021                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1022         }
1023
1024         /* these are used extensively in SkinTemplate, but also some other places */
1025
1026         /**
1027          * @param string $urlaction
1028          * @return string
1029          */
1030         static function makeMainPageUrl( $urlaction = '' ) {
1031                 $title = Title::newMainPage();
1032                 self::checkTitle( $title, '' );
1033
1034                 return $title->getLocalURL( $urlaction );
1035         }
1036
1037         /**
1038          * Make a URL for a Special Page using the given query and protocol.
1039          *
1040          * If $proto is set to null, make a local URL. Otherwise, make a full
1041          * URL with the protocol specified.
1042          *
1043          * @param string $name Name of the Special page
1044          * @param string $urlaction Query to append
1045          * @param string|null $proto Protocol to use or null for a local URL
1046          * @return string
1047          */
1048         static function makeSpecialUrl( $name, $urlaction = '', $proto = null ) {
1049                 $title = SpecialPage::getSafeTitleFor( $name );
1050                 if ( is_null( $proto ) ) {
1051                         return $title->getLocalURL( $urlaction );
1052                 } else {
1053                         return $title->getFullURL( $urlaction, false, $proto );
1054                 }
1055         }
1056
1057         /**
1058          * @param string $name
1059          * @param string $subpage
1060          * @param string $urlaction
1061          * @return string
1062          */
1063         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1064                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1065                 return $title->getLocalURL( $urlaction );
1066         }
1067
1068         /**
1069          * @param string $name
1070          * @param string $urlaction
1071          * @return string
1072          */
1073         static function makeI18nUrl( $name, $urlaction = '' ) {
1074                 $title = Title::newFromText( wfMessage( $name )->inContentLanguage()->text() );
1075                 self::checkTitle( $title, $name );
1076                 return $title->getLocalURL( $urlaction );
1077         }
1078
1079         /**
1080          * @param string $name
1081          * @param string $urlaction
1082          * @return string
1083          */
1084         static function makeUrl( $name, $urlaction = '' ) {
1085                 $title = Title::newFromText( $name );
1086                 self::checkTitle( $title, $name );
1087
1088                 return $title->getLocalURL( $urlaction );
1089         }
1090
1091         /**
1092          * If url string starts with http, consider as external URL, else
1093          * internal
1094          * @param string $name
1095          * @return string URL
1096          */
1097         static function makeInternalOrExternalUrl( $name ) {
1098                 if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $name ) ) {
1099                         return $name;
1100                 } else {
1101                         return self::makeUrl( $name );
1102                 }
1103         }
1104
1105         /**
1106          * this can be passed the NS number as defined in Language.php
1107          * @param string $name
1108          * @param string $urlaction
1109          * @param int $namespace
1110          * @return string
1111          */
1112         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1113                 $title = Title::makeTitleSafe( $namespace, $name );
1114                 self::checkTitle( $title, $name );
1115
1116                 return $title->getLocalURL( $urlaction );
1117         }
1118
1119         /**
1120          * these return an array with the 'href' and boolean 'exists'
1121          * @param string $name
1122          * @param string $urlaction
1123          * @return array
1124          */
1125         static function makeUrlDetails( $name, $urlaction = '' ) {
1126                 $title = Title::newFromText( $name );
1127                 self::checkTitle( $title, $name );
1128
1129                 return [
1130                         'href' => $title->getLocalURL( $urlaction ),
1131                         'exists' => $title->isKnown(),
1132                 ];
1133         }
1134
1135         /**
1136          * Make URL details where the article exists (or at least it's convenient to think so)
1137          * @param string $name Article name
1138          * @param string $urlaction
1139          * @return array
1140          */
1141         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1142                 $title = Title::newFromText( $name );
1143                 self::checkTitle( $title, $name );
1144
1145                 return [
1146                         'href' => $title->getLocalURL( $urlaction ),
1147                         'exists' => true
1148                 ];
1149         }
1150
1151         /**
1152          * make sure we have some title to operate on
1153          *
1154          * @param Title $title
1155          * @param string $name
1156          */
1157         static function checkTitle( &$title, $name ) {
1158                 if ( !is_object( $title ) ) {
1159                         $title = Title::newFromText( $name );
1160                         if ( !is_object( $title ) ) {
1161                                 $title = Title::newFromText( '--error: link target missing--' );
1162                         }
1163                 }
1164         }
1165
1166         /**
1167          * Build an array that represents the sidebar(s), the navigation bar among them.
1168          *
1169          * BaseTemplate::getSidebar can be used to simplify the format and id generation in new skins.
1170          *
1171          * The format of the returned array is array( heading => content, ... ), where:
1172          * - heading is the heading of a navigation portlet. It is either:
1173          *   - magic string to be handled by the skins ('SEARCH' / 'LANGUAGES' / 'TOOLBOX' / ...)
1174          *   - a message name (e.g. 'navigation'), the message should be HTML-escaped by the skin
1175          *   - plain text, which should be HTML-escaped by the skin
1176          * - content is the contents of the portlet. It is either:
1177          *   - HTML text (<ul><li>...</li>...</ul>)
1178          *   - array of link data in a format accepted by BaseTemplate::makeListItem()
1179          *   - (for a magic string as a key, any value)
1180          *
1181          * Note that extensions can control the sidebar contents using the SkinBuildSidebar hook
1182          * and can technically insert anything in here; skin creators are expected to handle
1183          * values described above.
1184          *
1185          * @return array
1186          */
1187         function buildSidebar() {
1188                 global $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1189
1190                 $that = $this;
1191                 $callback = function () use ( $that ) {
1192                         $bar = [];
1193                         $that->addToSidebar( $bar, 'sidebar' );
1194                         Hooks::run( 'SkinBuildSidebar', [ $that, &$bar ] );
1195
1196                         return $bar;
1197                 };
1198
1199                 if ( $wgEnableSidebarCache ) {
1200                         $cache = ObjectCache::getMainWANInstance();
1201                         $sidebar = $cache->getWithSetCallback(
1202                                 $cache->makeKey( 'sidebar', $this->getLanguage()->getCode() ),
1203                                 MessageCache::singleton()->isDisabled()
1204                                         ? $cache::TTL_UNCACHEABLE // bug T133069
1205                                         : $wgSidebarCacheExpiry,
1206                                 $callback,
1207                                 [ 'lockTSE' => 30 ]
1208                         );
1209                 } else {
1210                         $sidebar = $callback();
1211                 }
1212
1213                 // Apply post-processing to the cached value
1214                 Hooks::run( 'SidebarBeforeOutput', [ $this, &$sidebar ] );
1215
1216                 return $sidebar;
1217         }
1218
1219         /**
1220          * Add content from a sidebar system message
1221          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1222          *
1223          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1224          *
1225          * @param array $bar
1226          * @param string $message
1227          */
1228         public function addToSidebar( &$bar, $message ) {
1229                 $this->addToSidebarPlain( $bar, wfMessage( $message )->inContentLanguage()->plain() );
1230         }
1231
1232         /**
1233          * Add content from plain text
1234          * @since 1.17
1235          * @param array $bar
1236          * @param string $text
1237          * @return array
1238          */
1239         function addToSidebarPlain( &$bar, $text ) {
1240                 $lines = explode( "\n", $text );
1241
1242                 $heading = '';
1243
1244                 foreach ( $lines as $line ) {
1245                         if ( strpos( $line, '*' ) !== 0 ) {
1246                                 continue;
1247                         }
1248                         $line = rtrim( $line, "\r" ); // for Windows compat
1249
1250                         if ( strpos( $line, '**' ) !== 0 ) {
1251                                 $heading = trim( $line, '* ' );
1252                                 if ( !array_key_exists( $heading, $bar ) ) {
1253                                         $bar[$heading] = [];
1254                                 }
1255                         } else {
1256                                 $line = trim( $line, '* ' );
1257
1258                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1259                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1260                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1261                                         if ( count( $line ) !== 2 ) {
1262                                                 // Second sanity check, could be hit by people doing
1263                                                 // funky stuff with parserfuncs... (bug 33321)
1264                                                 continue;
1265                                         }
1266
1267                                         $extraAttribs = [];
1268
1269                                         $msgLink = $this->msg( $line[0] )->inContentLanguage();
1270                                         if ( $msgLink->exists() ) {
1271                                                 $link = $msgLink->text();
1272                                                 if ( $link == '-' ) {
1273                                                         continue;
1274                                                 }
1275                                         } else {
1276                                                 $link = $line[0];
1277                                         }
1278                                         $msgText = $this->msg( $line[1] );
1279                                         if ( $msgText->exists() ) {
1280                                                 $text = $msgText->text();
1281                                         } else {
1282                                                 $text = $line[1];
1283                                         }
1284
1285                                         if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $link ) ) {
1286                                                 $href = $link;
1287
1288                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1289                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1290                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1291                                                         $extraAttribs['rel'] = 'nofollow';
1292                                                 }
1293
1294                                                 global $wgExternalLinkTarget;
1295                                                 if ( $wgExternalLinkTarget ) {
1296                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1297                                                 }
1298                                         } else {
1299                                                 $title = Title::newFromText( $link );
1300
1301                                                 if ( $title ) {
1302                                                         $title = $title->fixSpecialName();
1303                                                         $href = $title->getLinkURL();
1304                                                 } else {
1305                                                         $href = 'INVALID-TITLE';
1306                                                 }
1307                                         }
1308
1309                                         $bar[$heading][] = array_merge( [
1310                                                 'text' => $text,
1311                                                 'href' => $href,
1312                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1313                                                 'active' => false
1314                                         ], $extraAttribs );
1315                                 } else {
1316                                         continue;
1317                                 }
1318                         }
1319                 }
1320
1321                 return $bar;
1322         }
1323
1324         /**
1325          * Gets new talk page messages for the current user and returns an
1326          * appropriate alert message (or an empty string if there are no messages)
1327          * @return string
1328          */
1329         function getNewtalks() {
1330
1331                 $newMessagesAlert = '';
1332                 $user = $this->getUser();
1333                 $newtalks = $user->getNewMessageLinks();
1334                 $out = $this->getOutput();
1335
1336                 // Allow extensions to disable or modify the new messages alert
1337                 if ( !Hooks::run( 'GetNewMessagesAlert', [ &$newMessagesAlert, $newtalks, $user, $out ] ) ) {
1338                         return '';
1339                 }
1340                 if ( $newMessagesAlert ) {
1341                         return $newMessagesAlert;
1342                 }
1343
1344                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1345                         $uTalkTitle = $user->getTalkPage();
1346                         $lastSeenRev = isset( $newtalks[0]['rev'] ) ? $newtalks[0]['rev'] : null;
1347                         $nofAuthors = 0;
1348                         if ( $lastSeenRev !== null ) {
1349                                 $plural = true; // Default if we have a last seen revision: if unknown, use plural
1350                                 $latestRev = Revision::newFromTitle( $uTalkTitle, false, Revision::READ_NORMAL );
1351                                 if ( $latestRev !== null ) {
1352                                         // Singular if only 1 unseen revision, plural if several unseen revisions.
1353                                         $plural = $latestRev->getParentId() !== $lastSeenRev->getId();
1354                                         $nofAuthors = $uTalkTitle->countAuthorsBetween(
1355                                                 $lastSeenRev, $latestRev, 10, 'include_new' );
1356                                 }
1357                         } else {
1358                                 // Singular if no revision -> diff link will show latest change only in any case
1359                                 $plural = false;
1360                         }
1361                         $plural = $plural ? 999 : 1;
1362                         // 999 signifies "more than one revision". We don't know how many, and even if we did,
1363                         // the number of revisions or authors is not necessarily the same as the number of
1364                         // "messages".
1365                         $newMessagesLink = Linker::linkKnown(
1366                                 $uTalkTitle,
1367                                 $this->msg( 'newmessageslinkplural' )->params( $plural )->escaped(),
1368                                 [],
1369                                 [ 'redirect' => 'no' ]
1370                         );
1371
1372                         $newMessagesDiffLink = Linker::linkKnown(
1373                                 $uTalkTitle,
1374                                 $this->msg( 'newmessagesdifflinkplural' )->params( $plural )->escaped(),
1375                                 [],
1376                                 $lastSeenRev !== null
1377                                         ? [ 'oldid' => $lastSeenRev->getId(), 'diff' => 'cur' ]
1378                                         : [ 'diff' => 'cur' ]
1379                         );
1380
1381                         if ( $nofAuthors >= 1 && $nofAuthors <= 10 ) {
1382                                 $newMessagesAlert = $this->msg(
1383                                         'youhavenewmessagesfromusers',
1384                                         $newMessagesLink,
1385                                         $newMessagesDiffLink
1386                                 )->numParams( $nofAuthors, $plural );
1387                         } else {
1388                                 // $nofAuthors === 11 signifies "11 or more" ("more than 10")
1389                                 $newMessagesAlert = $this->msg(
1390                                         $nofAuthors > 10 ? 'youhavenewmessagesmanyusers' : 'youhavenewmessages',
1391                                         $newMessagesLink,
1392                                         $newMessagesDiffLink
1393                                 )->numParams( $plural );
1394                         }
1395                         $newMessagesAlert = $newMessagesAlert->text();
1396                         # Disable CDN cache
1397                         $out->setCdnMaxage( 0 );
1398                 } elseif ( count( $newtalks ) ) {
1399                         $sep = $this->msg( 'newtalkseparator' )->escaped();
1400                         $msgs = [];
1401
1402                         foreach ( $newtalks as $newtalk ) {
1403                                 $msgs[] = Xml::element(
1404                                         'a',
1405                                         [ 'href' => $newtalk['link'] ], $newtalk['wiki']
1406                                 );
1407                         }
1408                         $parts = implode( $sep, $msgs );
1409                         $newMessagesAlert = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1410                         $out->setCdnMaxage( 0 );
1411                 }
1412
1413                 return $newMessagesAlert;
1414         }
1415
1416         /**
1417          * Get a cached notice
1418          *
1419          * @param string $name Message name, or 'default' for $wgSiteNotice
1420          * @return string|bool HTML fragment, or false to indicate that the caller
1421          *   should fall back to the next notice in its sequence
1422          */
1423         private function getCachedNotice( $name ) {
1424                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1425
1426                 $needParse = false;
1427
1428                 if ( $name === 'default' ) {
1429                         // special case
1430                         global $wgSiteNotice;
1431                         $notice = $wgSiteNotice;
1432                         if ( empty( $notice ) ) {
1433                                 return false;
1434                         }
1435                 } else {
1436                         $msg = $this->msg( $name )->inContentLanguage();
1437                         if ( $msg->isBlank() ) {
1438                                 return '';
1439                         } elseif ( $msg->isDisabled() ) {
1440                                 return false;
1441                         }
1442                         $notice = $msg->plain();
1443                 }
1444
1445                 // Use the extra hash appender to let eg SSL variants separately cache.
1446                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1447                 $cachedNotice = $parserMemc->get( $key );
1448                 if ( is_array( $cachedNotice ) ) {
1449                         if ( md5( $notice ) == $cachedNotice['hash'] ) {
1450                                 $notice = $cachedNotice['html'];
1451                         } else {
1452                                 $needParse = true;
1453                         }
1454                 } else {
1455                         $needParse = true;
1456                 }
1457
1458                 if ( $needParse ) {
1459                         $parsed = $this->getOutput()->parse( $notice );
1460                         $parserMemc->set( $key, [ 'html' => $parsed, 'hash' => md5( $notice ) ], 600 );
1461                         $notice = $parsed;
1462                 }
1463
1464                 $notice = Html::rawElement( 'div', [ 'id' => 'localNotice',
1465                         'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ], $notice );
1466                 return $notice;
1467         }
1468
1469         /**
1470          * Get the site notice
1471          *
1472          * @return string HTML fragment
1473          */
1474         function getSiteNotice() {
1475                 $siteNotice = '';
1476
1477                 if ( Hooks::run( 'SiteNoticeBefore', [ &$siteNotice, $this ] ) ) {
1478                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1479                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1480                         } else {
1481                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1482                                 if ( $anonNotice === false ) {
1483                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1484                                 } else {
1485                                         $siteNotice = $anonNotice;
1486                                 }
1487                         }
1488                         if ( $siteNotice === false ) {
1489                                 $siteNotice = $this->getCachedNotice( 'default' );
1490                         }
1491                 }
1492
1493                 Hooks::run( 'SiteNoticeAfter', [ &$siteNotice, $this ] );
1494                 return $siteNotice;
1495         }
1496
1497         /**
1498          * Create a section edit link.  This supersedes editSectionLink() and
1499          * editSectionLinkForOther().
1500          *
1501          * @param Title $nt The title being linked to (may not be the same as
1502          *   the current page, if the section is included from a template)
1503          * @param string $section The designation of the section being pointed to,
1504          *   to be included in the link, like "&section=$section"
1505          * @param string $tooltip The tooltip to use for the link: will be escaped
1506          *   and wrapped in the 'editsectionhint' message
1507          * @param string $lang Language code
1508          * @return string HTML to use for edit link
1509          */
1510         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1511                 // HTML generated here should probably have userlangattributes
1512                 // added to it for LTR text on RTL pages
1513
1514                 $lang = wfGetLangObj( $lang );
1515
1516                 $attribs = [];
1517                 if ( !is_null( $tooltip ) ) {
1518                         # Bug 25462: undo double-escaping.
1519                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1520                         $attribs['title'] = wfMessage( 'editsectionhint' )->rawParams( $tooltip )
1521                                 ->inLanguage( $lang )->text();
1522                 }
1523
1524                 $links = [
1525                         'editsection' => [
1526                                 'text' => wfMessage( 'editsection' )->inLanguage( $lang )->escaped(),
1527                                 'targetTitle' => $nt,
1528                                 'attribs' => $attribs,
1529                                 'query' => [ 'action' => 'edit', 'section' => $section ],
1530                                 'options' => [ 'noclasses', 'known' ]
1531                         ]
1532                 ];
1533
1534                 Hooks::run( 'SkinEditSectionLinks', [ $this, $nt, $section, $tooltip, &$links, $lang ] );
1535
1536                 $result = '<span class="mw-editsection"><span class="mw-editsection-bracket">[</span>';
1537
1538                 $linksHtml = [];
1539                 foreach ( $links as $k => $linkDetails ) {
1540                         $linksHtml[] = Linker::link(
1541                                 $linkDetails['targetTitle'],
1542                                 $linkDetails['text'],
1543                                 $linkDetails['attribs'],
1544                                 $linkDetails['query'],
1545                                 $linkDetails['options']
1546                         );
1547                 }
1548
1549                 $result .= implode(
1550                         '<span class="mw-editsection-divider">'
1551                                 . wfMessage( 'pipe-separator' )->inLanguage( $lang )->text()
1552                                 . '</span>',
1553                         $linksHtml
1554                 );
1555
1556                 $result .= '<span class="mw-editsection-bracket">]</span></span>';
1557                 // Deprecated, use SkinEditSectionLinks hook instead
1558                 Hooks::run(
1559                         'DoEditSectionLink',
1560                         [ $this, $nt, $section, $tooltip, &$result, $lang ],
1561                         '1.25'
1562                 );
1563                 return $result;
1564         }
1565
1566         /** @deprecated in 1.21 */
1567         public function commentBlock( $comment, $title = null, $local = false, $wikiId = null ) {
1568                 wfDeprecated( __METHOD__, '1.21' );
1569                 return Linker::commentBlock( $comment, $title, $local, $wikiId );
1570         }
1571
1572         /** @deprecated in 1.21 */
1573         public function generateRollback(
1574                 $rev,
1575                 IContextSource $context = null,
1576                 $options = [ 'verify' ]
1577         ) {
1578                 wfDeprecated( __METHOD__, '1.21' );
1579                 return Linker::generateRollback( $rev, $context, $options );
1580         }
1581
1582         /** @deprecated in 1.21 */
1583         public function link( $target, $html = null, $customAttribs = [], $query = [], $options = [] ) {
1584                 wfDeprecated( __METHOD__, '1.21' );
1585                 return Linker::link( $target, $html, $customAttribs, $query, $options );
1586         }
1587
1588         /** @deprecated in 1.21 */
1589         public function linkKnown(
1590                 $target,
1591                 $html = null,
1592                 $customAttribs = [ ],
1593                 $query = [ ],
1594                 $options = [ 'known', 'noclasses' ]
1595         ) {
1596                 wfDeprecated( __METHOD__, '1.21' );
1597                 return Linker::linkKnown( $target, $html, $customAttribs, $query, $options );
1598         }
1599
1600         /** @deprecated in 1.21 */
1601         public function userLink( $userId, $userName, $altUserName = false ) {
1602                 wfDeprecated( __METHOD__, '1.21' );
1603                 return Linker::userLink( $userId, $userName, $altUserName );
1604         }
1605
1606         /** @deprecated in 1.21 */
1607         public function userToolLinks(
1608                 $userId,
1609                 $userText,
1610                 $redContribsWhenNoEdits = false,
1611                 $flags = 0,
1612                 $edits = null
1613         ) {
1614                 wfDeprecated( __METHOD__, '1.21' );
1615                 return Linker::userToolLinks( $userId, $userText, $redContribsWhenNoEdits, $flags, $edits );
1616         }
1617
1618 }