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          * Any modules defined with the 'styles' key will be added as render blocking CSS via
 170          * Output::addModuleStyles. Similarly, each key should refer to a list of modules
 171          *
 172          * @return array Array of modules with helper keys for easy overriding
 173          */
 174         public function getDefaultModules() {
 175                 $out = $this->getOutput();
 176                 $config = $this->getConfig();
 177                 $user = $out->getUser();
 178                 $modules = [
 179                         // Styles key sets render blocking styles
 180                         // Unlike other keys in this definition it is an associative array
 181                         // where each key is the group name and points to a list of modules
 182                         'styles' => [
 183                                 'content' => [],
 184                         ],
 185                         // modules not specific to any specific skin or page
 186                         'core' => [
 187                                 // Enforce various default modules for all pages and all skins
 188                                 // Keep this list as small as possible
 189                                 'site',
 190                                 'mediawiki.page.startup',
 191                                 'mediawiki.user',
 192                         ],
 193                         // modules that enhance the page content in some way
 194                         'content' => [
 195                                 'mediawiki.page.ready',
 196                         ],
 197                         // modules relating to search functionality
 198                         'search' => [],
 199                         // modules relating to functionality relating to watching an article
 200                         'watch' => [],
 201                         // modules which relate to the current users preferences
 202                         'user' => [],
 203                 ];
 204
 205                 // Support for high-density display images if enabled
 206                 if ( $config->get( 'ResponsiveImages' ) ) {
 207                         $modules['core'][] = 'mediawiki.hidpi';
 208                 }
 209
 210                 // Preload jquery.tablesorter for mediawiki.page.ready
 211                 if ( strpos( $out->getHTML(), 'sortable' ) !== false ) {
 212                         $modules['content'][] = 'jquery.tablesorter';
 213                         $modules['styles']['content'][] = 'jquery.tablesorter.styles';
 214                 }
 215
 216                 // Preload jquery.makeCollapsible for mediawiki.page.ready
 217                 if ( strpos( $out->getHTML(), 'mw-collapsible' ) !== false ) {
 218                         $modules['content'][] = 'jquery.makeCollapsible';
 219                         $modules['styles']['content'][] = 'jquery.makeCollapsible.styles';
 220                 }
 221
 222                 if ( $out->isTOCEnabled() ) {
 223                         $modules['content'][] = 'mediawiki.toc';
 224                 }
 225
 226                 // Add various resources if required
 227                 if ( $user->isLoggedIn()
 228                         && $user->isAllowedAll( 'writeapi', 'viewmywatchlist', 'editmywatchlist' )
 229                         && $this->getRelevantTitle()->canExist()
 230                 ) {
 231                         $modules['watch'][] = 'mediawiki.page.watch.ajax';
 232                 }
 233
 234                 $modules['search'][] = 'mediawiki.searchSuggest';
 235
 236                 if ( $user->getBoolOption( 'editsectiononrightclick' ) ) {
 237                         $modules['user'][] = 'mediawiki.action.view.rightClickEdit';
 238                 }
 239
 240                 // Crazy edit-on-double-click stuff
 241                 if ( $out->isArticle() && $user->getOption( 'editondblclick' ) ) {
 242                         $modules['user'][] = 'mediawiki.action.view.dblClickEdit';
 243                 }
 244                 return $modules;
 245         }
 246
 247         /**
 248          * Preload the existence of three commonly-requested pages in a single query
 249          */
 250         protected function preloadExistence() {
 251                 $titles = [];
 252
 253                 // User/talk link
 254                 $user = $this->getUser();
 255                 if ( $user->isLoggedIn() ) {
 256                         $titles[] = $user->getUserPage();
 257                         $titles[] = $user->getTalkPage();
 258                 }
 259
 260                 // Check, if the page can hold some kind of content, otherwise do nothing
 261                 $title = $this->getRelevantTitle();
 262                 if ( $title->canExist() ) {
 263                         if ( $title->isTalkPage() ) {
 264                                 $titles[] = $title->getSubjectPage();
 265                         } else {
 266                                 $titles[] = $title->getTalkPage();
 267                         }
 268                 }
 269
 270                 // Footer links (used by SkinTemplate::prepareQuickTemplate)
 271                 foreach ( [
 272                         $this->footerLinkTitle( 'privacy', 'privacypage' ),
 273                         $this->footerLinkTitle( 'aboutsite', 'aboutpage' ),
 274                         $this->footerLinkTitle( 'disclaimers', 'disclaimerpage' ),
 275                 ] as $title ) {
 276                         if ( $title ) {
 277                                 $titles[] = $title;
 278                         }
 279                 }
 280
 281                 Hooks::run( 'SkinPreloadExistence', [ &$titles, $this ] );
 282
 283                 if ( $titles ) {
 284                         $lb = new LinkBatch( $titles );
 285                         $lb->setCaller( __METHOD__ );
 286                         $lb->execute();
 287                 }
 288         }
 289
 290         /**
 291          * Get the current revision ID
 292          *
 293          * @return int
 294          */
 295         public function getRevisionId() {
 296                 return $this->getOutput()->getRevisionId();
 297         }
 298
 299         /**
 300          * Whether the revision displayed is the latest revision of the page
 301          *
 302          * @return bool
 303          */
 304         public function isRevisionCurrent() {
 305                 $revID = $this->getRevisionId();
 306                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 307         }
 308
 309         /**
 310          * Set the "relevant" title
 311          * @see self::getRelevantTitle()
 312          * @param Title $t
 313          */
 314         public function setRelevantTitle( $t ) {
 315                 $this->mRelevantTitle = $t;
 316         }
 317
 318         /**
 319          * Return the "relevant" title.
 320          * A "relevant" title is not necessarily the actual title of the page.
 321          * Special pages like Special:MovePage use set the page they are acting on
 322          * as their "relevant" title, this allows the skin system to display things
 323          * such as content tabs which belong to to that page instead of displaying
 324          * a basic special page tab which has almost no meaning.
 325          *
 326          * @return Title
 327          */
 328         public function getRelevantTitle() {
 329                 if ( isset( $this->mRelevantTitle ) ) {
 330                         return $this->mRelevantTitle;
 331                 }
 332                 return $this->getTitle();
 333         }
 334
 335         /**
 336          * Set the "relevant" user
 337          * @see self::getRelevantUser()
 338          * @param User $u
 339          */
 340         public function setRelevantUser( $u ) {
 341                 $this->mRelevantUser = $u;
 342         }
 343
 344         /**
 345          * Return the "relevant" user.
 346          * A "relevant" user is similar to a relevant title. Special pages like
 347          * Special:Contributions mark the user which they are relevant to so that
 348          * things like the toolbox can display the information they usually are only
 349          * able to display on a user's userpage and talkpage.
 350          * @return User
 351          */
 352         public function getRelevantUser() {
 353                 if ( isset( $this->mRelevantUser ) ) {
 354                         return $this->mRelevantUser;
 355                 }
 356                 $title = $this->getRelevantTitle();
 357                 if ( $title->hasSubjectNamespace( NS_USER ) ) {
 358                         $rootUser = $title->getRootText();
 359                         if ( User::isIP( $rootUser ) ) {
 360                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 361                         } else {
 362                                 $user = User::newFromName( $rootUser, false );
 363
 364                                 if ( $user ) {
 365                                         $user->load( User::READ_NORMAL );
 366
 367                                         if ( $user->isLoggedIn() ) {
 368                                                 $this->mRelevantUser = $user;
 369                                         }
 370                                 }
 371                         }
 372                         return $this->mRelevantUser;
 373                 }
 374                 return null;
 375         }
 376
 377         /**
 378          * Outputs the HTML generated by other functions.
 379          * @param OutputPage $out
 380          */
 381         abstract function outputPage( OutputPage $out = null );
 382
 383         /**
 384          * @param array $data
 385          * @return string
 386          */
 387         static function makeVariablesScript( $data ) {
 388                 if ( $data ) {
 389                         return ResourceLoader::makeInlineScript(
 390                                 ResourceLoader::makeConfigSetScript( $data )
 391                         );
 392                 } else {
 393                         return '';
 394                 }
 395         }
 396
 397         /**
 398          * Get the query to generate a dynamic stylesheet
 399          *
 400          * @return array
 401          */
 402         public static function getDynamicStylesheetQuery() {
 403                 global $wgSquidMaxage;
 404
 405                 return [
 406                                 'action' => 'raw',
 407                                 'maxage' => $wgSquidMaxage,
 408                                 'usemsgcache' => 'yes',
 409                                 'ctype' => 'text/css',
 410                                 'smaxage' => $wgSquidMaxage,
 411                         ];
 412         }
 413
 414         /**
 415          * Add skin specific stylesheets
 416          * Calling this method with an $out of anything but the same OutputPage
 417          * inside ->getOutput() is deprecated. The $out arg is kept
 418          * for compatibility purposes with skins.
 419          * @param OutputPage $out
 420          * @todo delete
 421          */
 422         abstract function setupSkinUserCss( OutputPage $out );
 423
 424         /**
 425          * TODO: document
 426          * @param Title $title
 427          * @return string
 428          */
 429         function getPageClasses( $title ) {
 430                 $numeric = 'ns-' . $title->getNamespace();
 431
 432                 if ( $title->isSpecialPage() ) {
 433                         $type = 'ns-special';
 434                         // T25315: provide a class based on the canonical special page name without subpages
 435                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 436                         if ( $canonicalName ) {
 437                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 438                         } else {
 439                                 $type .= ' mw-invalidspecialpage';
 440                         }
 441                 } elseif ( $title->isTalkPage() ) {
 442                         $type = 'ns-talk';
 443                 } else {
 444                         $type = 'ns-subject';
 445                 }
 446
 447                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 448                 $root = Sanitizer::escapeClass( 'rootpage-' . $title->getRootTitle()->getPrefixedText() );
 449
 450                 return "$numeric $type $name $root";
 451         }
 452
 453         /**
 454          * Return values for <html> element
 455          * @return array Array of associative name-to-value elements for <html> element
 456          */
 457         public function getHtmlElementAttributes() {
 458                 $lang = $this->getLanguage();
 459                 return [
 460                         'lang' => $lang->getHtmlCode(),
 461                         'dir' => $lang->getDir(),
 462                         'class' => 'client-nojs',
 463                 ];
 464         }
 465
 466         /**
 467          * This will be called by OutputPage::headElement when it is creating the
 468          * "<body>" tag, skins can override it if they have a need to add in any
 469          * body attributes or classes of their own.
 470          * @param OutputPage $out
 471          * @param array &$bodyAttrs
 472          */
 473         function addToBodyAttributes( $out, &$bodyAttrs ) {
 474                 // does nothing by default
 475         }
 476
 477         /**
 478          * URL to the logo
 479          * @return string
 480          */
 481         function getLogo() {
 482                 global $wgLogo;
 483                 return $wgLogo;
 484         }
 485
 486         /**
 487          * Whether the logo should be preloaded with an HTTP link header or not
 488          * @since 1.29
 489          * @return bool
 490          */
 491         public function shouldPreloadLogo() {
 492                 return false;
 493         }
 494
 495         /**
 496          * @return string HTML
 497          */
 498         function getCategoryLinks() {
 499                 global $wgUseCategoryBrowser;
 500
 501                 $out = $this->getOutput();
 502                 $allCats = $out->getCategoryLinks();
 503
 504                 if ( !count( $allCats ) ) {
 505                         return '';
 506                 }
 507
 508                 $embed = "<li>";
 509                 $pop = "</li>";
 510
 511                 $s = '';
 512                 $colon = $this->msg( 'colon-separator' )->escaped();
 513
 514                 if ( !empty( $allCats['normal'] ) ) {
 515                         $t = $embed . implode( "{$pop}{$embed}", $allCats['normal'] ) . $pop;
 516
 517                         $msg = $this->msg( 'pagecategories' )->numParams( count( $allCats['normal'] ) )->escaped();
 518                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 519                         $title = Title::newFromText( $linkPage );
 520                         $link = $title ? Linker::link( $title, $msg ) : $msg;
 521                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 522                                 $link . $colon . '<ul>' . $t . '</ul>' . '</div>';
 523                 }
 524
 525                 # Hidden categories
 526                 if ( isset( $allCats['hidden'] ) ) {
 527                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 528                                 $class = ' mw-hidden-cats-user-shown';
 529                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 530                                 $class = ' mw-hidden-cats-ns-shown';
 531                         } else {
 532                                 $class = ' mw-hidden-cats-hidden';
 533                         }
 534
 535                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 536                                 $this->msg( 'hidden-categories' )->numParams( count( $allCats['hidden'] ) )->escaped() .
 537                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}", $allCats['hidden'] ) . $pop . '</ul>' .
 538                                 '</div>';
 539                 }
 540
 541                 # optional 'dmoz-like' category browser. Will be shown under the list
 542                 # of categories an article belong to
 543                 if ( $wgUseCategoryBrowser ) {
 544                         $s .= '<br /><hr />';
 545
 546                         # get a big array of the parents tree
 547                         $parenttree = $this->getTitle()->getParentCategoryTree();
 548                         # Skin object passed by reference cause it can not be
 549                         # accessed under the method subfunction drawCategoryBrowser
 550                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 551                         # Clean out bogus first entry and sort them
 552                         unset( $tempout[0] );
 553                         asort( $tempout );
 554                         # Output one per line
 555                         $s .= implode( "<br />\n", $tempout );
 556                 }
 557
 558                 return $s;
 559         }
 560
 561         /**
 562          * Render the array as a series of links.
 563          * @param array $tree Categories tree returned by Title::getParentCategoryTree
 564          * @return string Separated by &gt;, terminate with "\n"
 565          */
 566         function drawCategoryBrowser( $tree ) {
 567                 $return = '';
 568
 569                 foreach ( $tree as $element => $parent ) {
 570                         if ( empty( $parent ) ) {
 571                                 # element start a new list
 572                                 $return .= "\n";
 573                         } else {
 574                                 # grab the others elements
 575                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 576                         }
 577
 578                         # add our current element to the list
 579                         $eltitle = Title::newFromText( $element );
 580                         $return .= Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 581                 }
 582
 583                 return $return;
 584         }
 585
 586         /**
 587          * @return string HTML
 588          */
 589         function getCategories() {
 590                 $out = $this->getOutput();
 591                 $catlinks = $this->getCategoryLinks();
 592
 593                 // Check what we're showing
 594                 $allCats = $out->getCategoryLinks();
 595                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 596                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 597
 598                 $classes = [ 'catlinks' ];
 599                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 600                         $classes[] = 'catlinks-allhidden';
 601                 }
 602
 603                 return Html::rawElement(
 604                         'div',
 605                         [ 'id' => 'catlinks', 'class' => $classes, 'data-mw' => 'interface' ],
 606                         $catlinks
 607                 );
 608         }
 609
 610         /**
 611          * This runs a hook to allow extensions placing their stuff after content
 612          * and article metadata (e.g. categories).
 613          * Note: This function has nothing to do with afterContent().
 614          *
 615          * This hook is placed here in order to allow using the same hook for all
 616          * skins, both the SkinTemplate based ones and the older ones, which directly
 617          * use this class to get their data.
 618          *
 619          * The output of this function gets processed in SkinTemplate::outputPage() for
 620          * the SkinTemplate based skins, all other skins should directly echo it.
 621          *
 622          * @return string Empty by default, if not changed by any hook function.
 623          */
 624         protected function afterContentHook() {
 625                 $data = '';
 626
 627                 if ( Hooks::run( 'SkinAfterContent', [ &$data, $this ] ) ) {
 628                         // adding just some spaces shouldn't toggle the output
 629                         // of the whole <div/>, so we use trim() here
 630                         if ( trim( $data ) != '' ) {
 631                                 // Doing this here instead of in the skins to
 632                                 // ensure that the div has the same ID in all
 633                                 // skins
 634                                 $data = "<div id='mw-data-after-content'>\n" .
 635                                         "\t$data\n" .
 636                                         "</div>\n";
 637                         }
 638                 } else {
 639                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 640                 }
 641
 642                 return $data;
 643         }
 644
 645         /**
 646          * Generate debug data HTML for displaying at the bottom of the main content
 647          * area.
 648          * @return string HTML containing debug data, if enabled (otherwise empty).
 649          */
 650         protected function generateDebugHTML() {
 651                 return MWDebug::getHTMLDebugLog();
 652         }
 653
 654         /**
 655          * This gets called shortly before the "</body>" tag.
 656          *
 657          * @return string HTML-wrapped JS code to be put before "</body>"
 658          */
 659         function bottomScripts() {
 660                 // TODO and the suckage continues. This function is really just a wrapper around
 661                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 662                 // up at some point
 663                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 664                 Hooks::run( 'SkinAfterBottomScripts', [ $this, &$bottomScriptText ] );
 665
 666                 return $bottomScriptText;
 667         }
 668
 669         /**
 670          * Text with the permalink to the source page,
 671          * usually shown on the footer of a printed page
 672          *
 673          * @return string HTML text with an URL
 674          */
 675         function printSource() {
 676                 $oldid = $this->getRevisionId();
 677                 if ( $oldid ) {
 678                         $canonicalUrl = $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid );
 679                         $url = htmlspecialchars( wfExpandIRI( $canonicalUrl ) );
 680                 } else {
 681                         // oldid not available for non existing pages
 682                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
 683                 }
 684
 685                 return $this->msg( 'retrievedfrom' )
 686                         ->rawParams( '<a dir="ltr" href="' . $url . '">' . $url . '</a>' )
 687                         ->parse();
 688         }
 689
 690         /**
 691          * @return string HTML
 692          */
 693         function getUndeleteLink() {
 694                 $action = $this->getRequest()->getVal( 'action', 'view' );
 695
 696                 if ( $this->getTitle()->userCan( 'deletedhistory', $this->getUser() ) &&
 697                         ( !$this->getTitle()->exists() || $action == 'history' ) ) {
 698                         $n = $this->getTitle()->isDeleted();
 699
 700                         if ( $n ) {
 701                                 if ( $this->getTitle()->quickUserCan( 'undelete', $this->getUser() ) ) {
 702                                         $msg = 'thisisdeleted';
 703                                 } else {
 704                                         $msg = 'viewdeleted';
 705                                 }
 706
 707                                 return $this->msg( $msg )->rawParams(
 708                                         Linker::linkKnown(
 709                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 710                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 711                                         )->escaped();
 712                         }
 713                 }
 714
 715                 return '';
 716         }
 717
 718         /**
 719          * @param OutputPage $out Defaults to $this->getOutput() if left as null
 720          * @return string
 721          */
 722         function subPageSubtitle( $out = null ) {
 723                 if ( $out === null ) {
 724                         $out = $this->getOutput();
 725                 }
 726                 $title = $out->getTitle();
 727                 $subpages = '';
 728
 729                 if ( !Hooks::run( 'SkinSubPageSubtitle', [ &$subpages, $this, $out ] ) ) {
 730                         return $subpages;
 731                 }
 732
 733                 if ( $out->isArticle() && MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 734                         $ptext = $title->getPrefixedText();
 735                         if ( strpos( $ptext, '/' ) !== false ) {
 736                                 $links = explode( '/', $ptext );
 737                                 array_pop( $links );
 738                                 $c = 0;
 739                                 $growinglink = '';
 740                                 $display = '';
 741                                 $lang = $this->getLanguage();
 742
 743                                 foreach ( $links as $link ) {
 744                                         $growinglink .= $link;
 745                                         $display .= $link;
 746                                         $linkObj = Title::newFromText( $growinglink );
 747
 748                                         if ( is_object( $linkObj ) && $linkObj->isKnown() ) {
 749                                                 $getlink = Linker::linkKnown(
 750                                                         $linkObj,
 751                                                         htmlspecialchars( $display )
 752                                                 );
 753
 754                                                 $c++;
 755
 756                                                 if ( $c > 1 ) {
 757                                                         $subpages .= $lang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
 758                                                 } else {
 759                                                         $subpages .= '&lt; ';
 760                                                 }
 761
 762                                                 $subpages .= $getlink;
 763                                                 $display = '';
 764                                         } else {
 765                                                 $display .= '/';
 766                                         }
 767                                         $growinglink .= '/';
 768                                 }
 769                         }
 770                 }
 771
 772                 return $subpages;
 773         }
 774
 775         /**
 776          * @return string
 777          */
 778         function getSearchLink() {
 779                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 780                 return $searchPage->getLocalURL();
 781         }
 782
 783         /**
 784          * @return string
 785          */
 786         function escapeSearchLink() {
 787                 return htmlspecialchars( $this->getSearchLink() );
 788         }
 789
 790         /**
 791          * @param string $type
 792          * @return string
 793          */
 794         function getCopyright( $type = 'detect' ) {
 795                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 796
 797                 if ( $type == 'detect' ) {
 798                         if ( !$this->isRevisionCurrent()
 799                                 && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled()
 800                         ) {
 801                                 $type = 'history';
 802                         } else {
 803                                 $type = 'normal';
 804                         }
 805                 }
 806
 807                 if ( $type == 'history' ) {
 808                         $msg = 'history_copyright';
 809                 } else {
 810                         $msg = 'copyright';
 811                 }
 812
 813                 if ( $wgRightsPage ) {
 814                         $title = Title::newFromText( $wgRightsPage );
 815                         $link = Linker::linkKnown( $title, $wgRightsText );
 816                 } elseif ( $wgRightsUrl ) {
 817                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 818                 } elseif ( $wgRightsText ) {
 819                         $link = $wgRightsText;
 820                 } else {
 821                         # Give up now
 822                         return '';
 823                 }
 824
 825                 // Allow for site and per-namespace customization of copyright notice.
 826                 // @todo Remove deprecated $forContent param from hook handlers and then remove here.
 827                 $forContent = true;
 828
 829                 Hooks::run(
 830                         'SkinCopyrightFooter',
 831                         [ $this->getTitle(), $type, &$msg, &$link, &$forContent ]
 832                 );
 833
 834                 return $this->msg( $msg )->rawParams( $link )->text();
 835         }
 836
 837         /**
 838          * @return null|string
 839          */
 840         function getCopyrightIcon() {
 841                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgFooterIcons;
 842
 843                 $out = '';
 844
 845                 if ( $wgFooterIcons['copyright']['copyright'] ) {
 846                         $out = $wgFooterIcons['copyright']['copyright'];
 847                 } elseif ( $wgRightsIcon ) {
 848                         $icon = htmlspecialchars( $wgRightsIcon );
 849
 850                         if ( $wgRightsUrl ) {
 851                                 $url = htmlspecialchars( $wgRightsUrl );
 852                                 $out .= '<a href="' . $url . '">';
 853                         }
 854
 855                         $text = htmlspecialchars( $wgRightsText );
 856                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 857
 858                         if ( $wgRightsUrl ) {
 859                                 $out .= '</a>';
 860                         }
 861                 }
 862
 863                 return $out;
 864         }
 865
 866         /**
 867          * Gets the powered by MediaWiki icon.
 868          * @return string
 869          */
 870         function getPoweredBy() {
 871                 global $wgResourceBasePath;
 872
 873                 $url1 = htmlspecialchars(
 874                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_88x31.png"
 875                 );
 876                 $url1_5 = htmlspecialchars(
 877                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_132x47.png"
 878                 );
 879                 $url2 = htmlspecialchars(
 880                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_176x62.png"
 881                 );
 882                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url1
 883                         . '" srcset="' . $url1_5 . ' 1.5x, ' . $url2 . ' 2x" '
 884                         . 'height="31" width="88" alt="Powered by MediaWiki" /></a>';
 885                 Hooks::run( 'SkinGetPoweredBy', [ &$text, $this ] );
 886                 return $text;
 887         }
 888
 889         /**
 890          * Get the timestamp of the latest revision, formatted in user language
 891          *
 892          * @return string
 893          */
 894         protected function lastModified() {
 895                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 896
 897                 # No cached timestamp, load it from the database
 898                 if ( $timestamp === null ) {
 899                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 900                 }
 901
 902                 if ( $timestamp ) {
 903                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 904                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 905                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->parse();
 906                 } else {
 907                         $s = '';
 908                 }
 909
 910                 if ( MediaWikiServices::getInstance()->getDBLoadBalancer()->getLaggedReplicaMode() ) {
 911                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->parse() . '</strong>';
 912                 }
 913
 914                 return $s;
 915         }
 916
 917         /**
 918          * @param string $align
 919          * @return string
 920          */
 921         function logoText( $align = '' ) {
 922                 if ( $align != '' ) {
 923                         $a = " style='float: {$align};'";
 924                 } else {
 925                         $a = '';
 926                 }
 927
 928                 $mp = $this->msg( 'mainpage' )->escaped();
 929                 $mptitle = Title::newMainPage();
 930                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 931
 932                 $logourl = $this->getLogo();
 933                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 934
 935                 return $s;
 936         }
 937
 938         /**
 939          * Renders a $wgFooterIcons icon according to the method's arguments
 940          * @param array $icon The icon to build the html for, see $wgFooterIcons
 941          *   for the format of this array.
 942          * @param bool|string $withImage Whether to use the icon's image or output
 943          *   a text-only footericon.
 944          * @return string HTML
 945          */
 946         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 947                 if ( is_string( $icon ) ) {
 948                         $html = $icon;
 949                 } else { // Assuming array
 950                         $url = isset( $icon["url"] ) ? $icon["url"] : null;
 951                         unset( $icon["url"] );
 952                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 953                                 // do this the lazy way, just pass icon data as an attribute array
 954                                 $html = Html::element( 'img', $icon );
 955                         } else {
 956                                 $html = htmlspecialchars( $icon["alt"] );
 957                         }
 958                         if ( $url ) {
 959                                 global $wgExternalLinkTarget;
 960                                 $html = Html::rawElement( 'a',
 961                                         [ "href" => $url, "target" => $wgExternalLinkTarget ],
 962                                         $html );
 963                         }
 964                 }
 965                 return $html;
 966         }
 967
 968         /**
 969          * Gets the link to the wiki's main page.
 970          * @return string
 971          */
 972         function mainPageLink() {
 973                 $s = Linker::linkKnown(
 974                         Title::newMainPage(),
 975                         $this->msg( 'mainpage' )->escaped()
 976                 );
 977
 978                 return $s;
 979         }
 980
 981         /**
 982          * Returns an HTML link for use in the footer
 983          * @param string $desc The i18n message key for the link text
 984          * @param string $page The i18n message key for the page to link to
 985          * @return string HTML anchor
 986          */
 987         public function footerLink( $desc, $page ) {
 988                 $title = $this->footerLinkTitle( $desc, $page );
 989                 if ( !$title ) {
 990                         return '';
 991                 }
 992
 993                 return Linker::linkKnown(
 994                         $title,
 995                         $this->msg( $desc )->escaped()
 996                 );
 997         }
 998
 999         /**
1000          * @param string $desc
1001          * @param string $page
1002          * @return Title|null
1003          */
1004         private function footerLinkTitle( $desc, $page ) {
1005                 // If the link description has been set to "-" in the default language,
1006                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
1007                         // then it is disabled, for all languages.
1008                         return null;
1009                 }
1010                 // Otherwise, we display the link for the user, described in their
1011                 // language (which may or may not be the same as the default language),
1012                 // but we make the link target be the one site-wide page.
1013                 $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
1014
1015                 return $title ?: null;
1016         }
1017
1018         /**
1019          * Gets the link to the wiki's privacy policy page.
1020          * @return string HTML
1021          */
1022         function privacyLink() {
1023                 return $this->footerLink( 'privacy', 'privacypage' );
1024         }
1025
1026         /**
1027          * Gets the link to the wiki's about page.
1028          * @return string HTML
1029          */
1030         function aboutLink() {
1031                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1032         }
1033
1034         /**
1035          * Gets the link to the wiki's general disclaimers page.
1036          * @return string HTML
1037          */
1038         function disclaimerLink() {
1039                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1040         }
1041
1042         /**
1043          * Return URL options for the 'edit page' link.
1044          * This may include an 'oldid' specifier, if the current page view is such.
1045          *
1046          * @return array
1047          * @private
1048          */
1049         function editUrlOptions() {
1050                 $options = [ 'action' => 'edit' ];
1051
1052                 if ( !$this->isRevisionCurrent() ) {
1053                         $options['oldid'] = intval( $this->getRevisionId() );
1054                 }
1055
1056                 return $options;
1057         }
1058
1059         /**
1060          * @param User|int $id
1061          * @return bool
1062          */
1063         function showEmailUser( $id ) {
1064                 if ( $id instanceof User ) {
1065                         $targetUser = $id;
1066                 } else {
1067                         $targetUser = User::newFromId( $id );
1068                 }
1069
1070                 # The sending user must have a confirmed email address and the receiving
1071                 # user must accept emails from the sender.
1072                 return $this->getUser()->canSendEmail()
1073                         && SpecialEmailUser::validateTarget( $targetUser, $this->getUser() ) === '';
1074         }
1075
1076         /**
1077          * Return a fully resolved style path url to images or styles stored in the current skins's folder.
1078          * This method returns a url resolved using the configured skin style path
1079          * and includes the style version inside of the url.
1080          *
1081          * Requires $stylename to be set, otherwise throws MWException.
1082          *
1083          * @param string $name The name or path of a skin resource file
1084          * @return string The fully resolved style path url including styleversion
1085          * @throws MWException
1086          */
1087         function getSkinStylePath( $name ) {
1088                 global $wgStylePath, $wgStyleVersion;
1089
1090                 if ( $this->stylename === null ) {
1091                         $class = static::class;
1092                         throw new MWException( "$class::\$stylename must be set to use getSkinStylePath()" );
1093                 }
1094
1095                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1096         }
1097
1098         /* these are used extensively in SkinTemplate, but also some other places */
1099
1100         /**
1101          * @param string|string[] $urlaction
1102          * @return string
1103          */
1104         static function makeMainPageUrl( $urlaction = '' ) {
1105                 $title = Title::newMainPage();
1106                 self::checkTitle( $title, '' );
1107
1108                 return $title->getLinkURL( $urlaction );
1109         }
1110
1111         /**
1112          * Make a URL for a Special Page using the given query and protocol.
1113          *
1114          * If $proto is set to null, make a local URL. Otherwise, make a full
1115          * URL with the protocol specified.
1116          *
1117          * @param string $name Name of the Special page
1118          * @param string|string[] $urlaction Query to append
1119          * @param string|null $proto Protocol to use or null for a local URL
1120          * @return string
1121          */
1122         static function makeSpecialUrl( $name, $urlaction = '', $proto = null ) {
1123                 $title = SpecialPage::getSafeTitleFor( $name );
1124                 if ( is_null( $proto ) ) {
1125                         return $title->getLocalURL( $urlaction );
1126                 } else {
1127                         return $title->getFullURL( $urlaction, false, $proto );
1128                 }
1129         }
1130
1131         /**
1132          * @param string $name
1133          * @param string $subpage
1134          * @param string|string[] $urlaction
1135          * @return string
1136          */
1137         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1138                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1139                 return $title->getLocalURL( $urlaction );
1140         }
1141
1142         /**
1143          * @param string $name
1144          * @param string|string[] $urlaction
1145          * @return string
1146          */
1147         static function makeI18nUrl( $name, $urlaction = '' ) {
1148                 $title = Title::newFromText( wfMessage( $name )->inContentLanguage()->text() );
1149                 self::checkTitle( $title, $name );
1150                 return $title->getLocalURL( $urlaction );
1151         }
1152
1153         /**
1154          * @param string $name
1155          * @param string|string[] $urlaction
1156          * @return string
1157          */
1158         static function makeUrl( $name, $urlaction = '' ) {
1159                 $title = Title::newFromText( $name );
1160                 self::checkTitle( $title, $name );
1161
1162                 return $title->getLocalURL( $urlaction );
1163         }
1164
1165         /**
1166          * If url string starts with http, consider as external URL, else
1167          * internal
1168          * @param string $name
1169          * @return string URL
1170          */
1171         static function makeInternalOrExternalUrl( $name ) {
1172                 if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $name ) ) {
1173                         return $name;
1174                 } else {
1175                         return self::makeUrl( $name );
1176                 }
1177         }
1178
1179         /**
1180          * this can be passed the NS number as defined in Language.php
1181          * @param string $name
1182          * @param string|string[] $urlaction
1183          * @param int $namespace
1184          * @return string
1185          */
1186         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1187                 $title = Title::makeTitleSafe( $namespace, $name );
1188                 self::checkTitle( $title, $name );
1189
1190                 return $title->getLocalURL( $urlaction );
1191         }
1192
1193         /**
1194          * these return an array with the 'href' and boolean 'exists'
1195          * @param string $name
1196          * @param string|string[] $urlaction
1197          * @return array
1198          */
1199         static function makeUrlDetails( $name, $urlaction = '' ) {
1200                 $title = Title::newFromText( $name );
1201                 self::checkTitle( $title, $name );
1202
1203                 return [
1204                         'href' => $title->getLocalURL( $urlaction ),
1205                         'exists' => $title->isKnown(),
1206                 ];
1207         }
1208
1209         /**
1210          * Make URL details where the article exists (or at least it's convenient to think so)
1211          * @param string $name Article name
1212          * @param string|string[] $urlaction
1213          * @return array
1214          */
1215         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1216                 $title = Title::newFromText( $name );
1217                 self::checkTitle( $title, $name );
1218
1219                 return [
1220                         'href' => $title->getLocalURL( $urlaction ),
1221                         'exists' => true
1222                 ];
1223         }
1224
1225         /**
1226          * make sure we have some title to operate on
1227          *
1228          * @param Title &$title
1229          * @param string $name
1230          */
1231         static function checkTitle( &$title, $name ) {
1232                 if ( !is_object( $title ) ) {
1233                         $title = Title::newFromText( $name );
1234                         if ( !is_object( $title ) ) {
1235                                 $title = Title::newFromText( '--error: link target missing--' );
1236                         }
1237                 }
1238         }
1239
1240         /**
1241          * Build an array that represents the sidebar(s), the navigation bar among them.
1242          *
1243          * BaseTemplate::getSidebar can be used to simplify the format and id generation in new skins.
1244          *
1245          * The format of the returned array is [ heading => content, ... ], where:
1246          * - heading is the heading of a navigation portlet. It is either:
1247          *   - magic string to be handled by the skins ('SEARCH' / 'LANGUAGES' / 'TOOLBOX' / ...)
1248          *   - a message name (e.g. 'navigation'), the message should be HTML-escaped by the skin
1249          *   - plain text, which should be HTML-escaped by the skin
1250          * - content is the contents of the portlet. It is either:
1251          *   - HTML text (<ul><li>...</li>...</ul>)
1252          *   - array of link data in a format accepted by BaseTemplate::makeListItem()
1253          *   - (for a magic string as a key, any value)
1254          *
1255          * Note that extensions can control the sidebar contents using the SkinBuildSidebar hook
1256          * and can technically insert anything in here; skin creators are expected to handle
1257          * values described above.
1258          *
1259          * @return array
1260          */
1261         public function buildSidebar() {
1262                 global $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1263
1264                 $callback = function ( $old = null, &$ttl = null ) {
1265                         $bar = [];
1266                         $this->addToSidebar( $bar, 'sidebar' );
1267                         Hooks::run( 'SkinBuildSidebar', [ $this, &$bar ] );
1268                         if ( MessageCache::singleton()->isDisabled() ) {
1269                                 $ttl = WANObjectCache::TTL_UNCACHEABLE; // bug T133069
1270                         }
1271
1272                         return $bar;
1273                 };
1274
1275                 $msgCache = MessageCache::singleton();
1276                 $wanCache = MediaWikiServices::getInstance()->getMainWANObjectCache();
1277
1278                 $sidebar = $wgEnableSidebarCache
1279                         ? $wanCache->getWithSetCallback(
1280                                 $wanCache->makeKey( 'sidebar', $this->getLanguage()->getCode() ),
1281                                 $wgSidebarCacheExpiry,
1282                                 $callback,
1283                                 [
1284                                         'checkKeys' => [
1285                                                 // Unless there is both no exact $code override nor an i18n definition
1286                                                 // in the the software, the only MediaWiki page to check is for $code.
1287                                                 $msgCache->getCheckKey( $this->getLanguage()->getCode() )
1288                                         ],
1289                                         'lockTSE' => 30
1290                                 ]
1291                         )
1292                         : $callback();
1293
1294                 // Apply post-processing to the cached value
1295                 Hooks::run( 'SidebarBeforeOutput', [ $this, &$sidebar ] );
1296
1297                 return $sidebar;
1298         }
1299
1300         /**
1301          * Add content from a sidebar system message
1302          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1303          *
1304          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1305          *
1306          * @param array &$bar
1307          * @param string $message
1308          */
1309         public function addToSidebar( &$bar, $message ) {
1310                 $this->addToSidebarPlain( $bar, wfMessage( $message )->inContentLanguage()->plain() );
1311         }
1312
1313         /**
1314          * Add content from plain text
1315          * @since 1.17
1316          * @param array &$bar
1317          * @param string $text
1318          * @return array
1319          */
1320         function addToSidebarPlain( &$bar, $text ) {
1321                 $lines = explode( "\n", $text );
1322
1323                 $heading = '';
1324                 $messageTitle = $this->getConfig()->get( 'EnableSidebarCache' )
1325                         ? Title::newMainPage() : $this->getTitle();
1326
1327                 foreach ( $lines as $line ) {
1328                         if ( strpos( $line, '*' ) !== 0 ) {
1329                                 continue;
1330                         }
1331                         $line = rtrim( $line, "\r" ); // for Windows compat
1332
1333                         if ( strpos( $line, '**' ) !== 0 ) {
1334                                 $heading = trim( $line, '* ' );
1335                                 if ( !array_key_exists( $heading, $bar ) ) {
1336                                         $bar[$heading] = [];
1337                                 }
1338                         } else {
1339                                 $line = trim( $line, '* ' );
1340
1341                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1342                                         $line = MessageCache::singleton()->transform( $line, false, null, $messageTitle );
1343                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1344                                         if ( count( $line ) !== 2 ) {
1345                                                 // Second sanity check, could be hit by people doing
1346                                                 // funky stuff with parserfuncs... (T35321)
1347                                                 continue;
1348                                         }
1349
1350                                         $extraAttribs = [];
1351
1352                                         $msgLink = $this->msg( $line[0] )->title( $messageTitle )->inContentLanguage();
1353                                         if ( $msgLink->exists() ) {
1354                                                 $link = $msgLink->text();
1355                                                 if ( $link == '-' ) {
1356                                                         continue;
1357                                                 }
1358                                         } else {
1359                                                 $link = $line[0];
1360                                         }
1361                                         $msgText = $this->msg( $line[1] )->title( $messageTitle );
1362                                         if ( $msgText->exists() ) {
1363                                                 $text = $msgText->text();
1364                                         } else {
1365                                                 $text = $line[1];
1366                                         }
1367
1368                                         if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $link ) ) {
1369                                                 $href = $link;
1370
1371                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1372                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1373                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1374                                                         $extraAttribs['rel'] = 'nofollow';
1375                                                 }
1376
1377                                                 global $wgExternalLinkTarget;
1378                                                 if ( $wgExternalLinkTarget ) {
1379                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1380                                                 }
1381                                         } else {
1382                                                 $title = Title::newFromText( $link );
1383
1384                                                 if ( $title ) {
1385                                                         $title = $title->fixSpecialName();
1386                                                         $href = $title->getLinkURL();
1387                                                 } else {
1388                                                         $href = 'INVALID-TITLE';
1389                                                 }
1390                                         }
1391
1392                                         $bar[$heading][] = array_merge( [
1393                                                 'text' => $text,
1394                                                 'href' => $href,
1395                                                 'id' => Sanitizer::escapeIdForAttribute( 'n-' . strtr( $line[1], ' ', '-' ) ),
1396                                                 'active' => false,
1397                                         ], $extraAttribs );
1398                                 } else {
1399                                         continue;
1400                                 }
1401                         }
1402                 }
1403
1404                 return $bar;
1405         }
1406
1407         /**
1408          * Gets new talk page messages for the current user and returns an
1409          * appropriate alert message (or an empty string if there are no messages)
1410          * @return string
1411          */
1412         function getNewtalks() {
1413                 $newMessagesAlert = '';
1414                 $user = $this->getUser();
1415                 $newtalks = $user->getNewMessageLinks();
1416                 $out = $this->getOutput();
1417
1418                 // Allow extensions to disable or modify the new messages alert
1419                 if ( !Hooks::run( 'GetNewMessagesAlert', [ &$newMessagesAlert, $newtalks, $user, $out ] ) ) {
1420                         return '';
1421                 }
1422                 if ( $newMessagesAlert ) {
1423                         return $newMessagesAlert;
1424                 }
1425
1426                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1427                         $uTalkTitle = $user->getTalkPage();
1428                         $lastSeenRev = isset( $newtalks[0]['rev'] ) ? $newtalks[0]['rev'] : null;
1429                         $nofAuthors = 0;
1430                         if ( $lastSeenRev !== null ) {
1431                                 $plural = true; // Default if we have a last seen revision: if unknown, use plural
1432                                 $latestRev = Revision::newFromTitle( $uTalkTitle, false, Revision::READ_NORMAL );
1433                                 if ( $latestRev !== null ) {
1434                                         // Singular if only 1 unseen revision, plural if several unseen revisions.
1435                                         $plural = $latestRev->getParentId() !== $lastSeenRev->getId();
1436                                         $nofAuthors = $uTalkTitle->countAuthorsBetween(
1437                                                 $lastSeenRev, $latestRev, 10, 'include_new' );
1438                                 }
1439                         } else {
1440                                 // Singular if no revision -> diff link will show latest change only in any case
1441                                 $plural = false;
1442                         }
1443                         $plural = $plural ? 999 : 1;
1444                         // 999 signifies "more than one revision". We don't know how many, and even if we did,
1445                         // the number of revisions or authors is not necessarily the same as the number of
1446                         // "messages".
1447                         $newMessagesLink = Linker::linkKnown(
1448                                 $uTalkTitle,
1449                                 $this->msg( 'newmessageslinkplural' )->params( $plural )->escaped(),
1450                                 [],
1451                                 [ 'redirect' => 'no' ]
1452                         );
1453
1454                         $newMessagesDiffLink = Linker::linkKnown(
1455                                 $uTalkTitle,
1456                                 $this->msg( 'newmessagesdifflinkplural' )->params( $plural )->escaped(),
1457                                 [],
1458                                 $lastSeenRev !== null
1459                                         ? [ 'oldid' => $lastSeenRev->getId(), 'diff' => 'cur' ]
1460                                         : [ 'diff' => 'cur' ]
1461                         );
1462
1463                         if ( $nofAuthors >= 1 && $nofAuthors <= 10 ) {
1464                                 $newMessagesAlert = $this->msg(
1465                                         'youhavenewmessagesfromusers',
1466                                         $newMessagesLink,
1467                                         $newMessagesDiffLink
1468                                 )->numParams( $nofAuthors, $plural );
1469                         } else {
1470                                 // $nofAuthors === 11 signifies "11 or more" ("more than 10")
1471                                 $newMessagesAlert = $this->msg(
1472                                         $nofAuthors > 10 ? 'youhavenewmessagesmanyusers' : 'youhavenewmessages',
1473                                         $newMessagesLink,
1474                                         $newMessagesDiffLink
1475                                 )->numParams( $plural );
1476                         }
1477                         $newMessagesAlert = $newMessagesAlert->text();
1478                         # Disable CDN cache
1479                         $out->setCdnMaxage( 0 );
1480                 } elseif ( count( $newtalks ) ) {
1481                         $sep = $this->msg( 'newtalkseparator' )->escaped();
1482                         $msgs = [];
1483
1484                         foreach ( $newtalks as $newtalk ) {
1485                                 $msgs[] = Xml::element(
1486                                         'a',
1487                                         [ 'href' => $newtalk['link'] ], $newtalk['wiki']
1488                                 );
1489                         }
1490                         $parts = implode( $sep, $msgs );
1491                         $newMessagesAlert = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1492                         $out->setCdnMaxage( 0 );
1493                 }
1494
1495                 return $newMessagesAlert;
1496         }
1497
1498         /**
1499          * Get a cached notice
1500          *
1501          * @param string $name Message name, or 'default' for $wgSiteNotice
1502          * @return string|bool HTML fragment, or false to indicate that the caller
1503          *   should fall back to the next notice in its sequence
1504          */
1505         private function getCachedNotice( $name ) {
1506                 global $wgRenderHashAppend, $wgContLang;
1507
1508                 $needParse = false;
1509
1510                 if ( $name === 'default' ) {
1511                         // special case
1512                         global $wgSiteNotice;
1513                         $notice = $wgSiteNotice;
1514                         if ( empty( $notice ) ) {
1515                                 return false;
1516                         }
1517                 } else {
1518                         $msg = $this->msg( $name )->inContentLanguage();
1519                         if ( $msg->isBlank() ) {
1520                                 return '';
1521                         } elseif ( $msg->isDisabled() ) {
1522                                 return false;
1523                         }
1524                         $notice = $msg->plain();
1525                 }
1526
1527                 $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
1528                 $parsed = $cache->getWithSetCallback(
1529                         // Use the extra hash appender to let eg SSL variants separately cache
1530                         // Key is verified with md5 hash of unparsed wikitext
1531                         $cache->makeKey( $name, $wgRenderHashAppend, md5( $notice ) ),
1532                         // TTL in seconds
1533                         600,
1534                         function () use ( $notice ) {
1535                                 return $this->getOutput()->parse( $notice );
1536                         }
1537                 );
1538
1539                 return Html::rawElement(
1540                         'div',
1541                         [
1542                                 'id' => 'localNotice',
1543                                 'lang' => $wgContLang->getHtmlCode(),
1544                                 'dir' => $wgContLang->getDir()
1545                         ],
1546                         $parsed
1547                 );
1548         }
1549
1550         /**
1551          * Get the site notice
1552          *
1553          * @return string HTML fragment
1554          */
1555         function getSiteNotice() {
1556                 $siteNotice = '';
1557
1558                 if ( Hooks::run( 'SiteNoticeBefore', [ &$siteNotice, $this ] ) ) {
1559                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1560                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1561                         } else {
1562                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1563                                 if ( $anonNotice === false ) {
1564                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1565                                 } else {
1566                                         $siteNotice = $anonNotice;
1567                                 }
1568                         }
1569                         if ( $siteNotice === false ) {
1570                                 $siteNotice = $this->getCachedNotice( 'default' );
1571                         }
1572                 }
1573
1574                 Hooks::run( 'SiteNoticeAfter', [ &$siteNotice, $this ] );
1575                 return $siteNotice;
1576         }
1577
1578         /**
1579          * Create a section edit link.  This supersedes editSectionLink() and
1580          * editSectionLinkForOther().
1581          *
1582          * @param Title $nt The title being linked to (may not be the same as
1583          *   the current page, if the section is included from a template)
1584          * @param string $section The designation of the section being pointed to,
1585          *   to be included in the link, like "&section=$section"
1586          * @param string $tooltip The tooltip to use for the link: will be escaped
1587          *   and wrapped in the 'editsectionhint' message
1588          * @param string $lang Language code
1589          * @return string HTML to use for edit link
1590          */
1591         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1592                 // HTML generated here should probably have userlangattributes
1593                 // added to it for LTR text on RTL pages
1594
1595                 $lang = wfGetLangObj( $lang );
1596
1597                 $attribs = [];
1598                 if ( !is_null( $tooltip ) ) {
1599                         $attribs['title'] = wfMessage( 'editsectionhint' )->rawParams( $tooltip )
1600                                 ->inLanguage( $lang )->text();
1601                 }
1602
1603                 $links = [
1604                         'editsection' => [
1605                                 'text' => wfMessage( 'editsection' )->inLanguage( $lang )->escaped(),
1606                                 'targetTitle' => $nt,
1607                                 'attribs' => $attribs,
1608                                 'query' => [ 'action' => 'edit', 'section' => $section ],
1609                                 'options' => [ 'noclasses', 'known' ]
1610                         ]
1611                 ];
1612
1613                 Hooks::run( 'SkinEditSectionLinks', [ $this, $nt, $section, $tooltip, &$links, $lang ] );
1614
1615                 $result = '<span class="mw-editsection"><span class="mw-editsection-bracket">[</span>';
1616
1617                 $linksHtml = [];
1618                 foreach ( $links as $k => $linkDetails ) {
1619                         $linksHtml[] = Linker::link(
1620                                 $linkDetails['targetTitle'],
1621                                 $linkDetails['text'],
1622                                 $linkDetails['attribs'],
1623                                 $linkDetails['query'],
1624                                 $linkDetails['options']
1625                         );
1626                 }
1627
1628                 $result .= implode(
1629                         '<span class="mw-editsection-divider">'
1630                                 . wfMessage( 'pipe-separator' )->inLanguage( $lang )->escaped()
1631                                 . '</span>',
1632                         $linksHtml
1633                 );
1634
1635                 $result .= '<span class="mw-editsection-bracket">]</span></span>';
1636                 // Deprecated, use SkinEditSectionLinks hook instead
1637                 Hooks::run(
1638                         'DoEditSectionLink',
1639                         [ $this, $nt, $section, $tooltip, &$result, $lang ],
1640                         '1.25'
1641                 );
1642                 return $result;
1643         }
1644
1645 }