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 = $this->getUser();
 178
 179                 // Modules declared in the $modules literal are loaded
 180                 // for ALL users, on ALL pages, in ALL skins.
 181                 // Keep this list as small as possible!
 182                 $modules = [
 183                         'styles' => [
 184                                 // The 'styles' key sets render-blocking style modules
 185                                 // Unlike other keys in $modules, this is an associative array
 186                                 // where each key is its own group pointing to a list of modules
 187                                 'core' => [
 188                                         'mediawiki.legacy.shared',
 189                                         'mediawiki.legacy.commonPrint',
 190                                 ],
 191                                 'content' => [],
 192                                 'syndicate' => [],
 193                         ],
 194                         'core' => [
 195                                 'site',
 196                                 'mediawiki.page.startup',
 197                                 'mediawiki.user',
 198                         ],
 199                         // modules that enhance the content in some way
 200                         'content' => [
 201                                 'mediawiki.page.ready',
 202                         ],
 203                         // modules relating to search functionality
 204                         'search' => [],
 205                         // modules relating to functionality relating to watching an article
 206                         'watch' => [],
 207                         // modules which relate to the current users preferences
 208                         'user' => [],
 209                         // modules relating to RSS/Atom Feeds
 210                         'syndicate' => [],
 211                 ];
 212
 213                 // Support for high-density display images if enabled
 214                 if ( $config->get( 'ResponsiveImages' ) ) {
 215                         $modules['core'][] = 'mediawiki.hidpi';
 216                 }
 217
 218                 // Preload jquery.tablesorter for mediawiki.page.ready
 219                 if ( strpos( $out->getHTML(), 'sortable' ) !== false ) {
 220                         $modules['content'][] = 'jquery.tablesorter';
 221                         $modules['styles']['content'][] = 'jquery.tablesorter.styles';
 222                 }
 223
 224                 // Preload jquery.makeCollapsible for mediawiki.page.ready
 225                 if ( strpos( $out->getHTML(), 'mw-collapsible' ) !== false ) {
 226                         $modules['content'][] = 'jquery.makeCollapsible';
 227                         $modules['styles']['content'][] = 'jquery.makeCollapsible.styles';
 228                 }
 229
 230                 // Deprecated since 1.26: Unconditional loading of mediawiki.ui.button
 231                 // on every page is deprecated. Express a dependency instead.
 232                 if ( strpos( $out->getHTML(), 'mw-ui-button' ) !== false ) {
 233                         $modules['styles']['content'][] = 'mediawiki.ui.button';
 234                 }
 235
 236                 if ( $out->isTOCEnabled() ) {
 237                         $modules['content'][] = 'mediawiki.toc';
 238                 }
 239
 240                 // Add various resources if required
 241                 if ( $user->isLoggedIn()
 242                         && $user->isAllowedAll( 'writeapi', 'viewmywatchlist', 'editmywatchlist' )
 243                         && $this->getRelevantTitle()->canExist()
 244                 ) {
 245                         $modules['watch'][] = 'mediawiki.page.watch.ajax';
 246                 }
 247
 248                 $modules['search'][] = 'mediawiki.searchSuggest';
 249
 250                 if ( $user->getBoolOption( 'editsectiononrightclick' ) ) {
 251                         $modules['user'][] = 'mediawiki.action.view.rightClickEdit';
 252                 }
 253
 254                 // Crazy edit-on-double-click stuff
 255                 if ( $out->isArticle() && $user->getOption( 'editondblclick' ) ) {
 256                         $modules['user'][] = 'mediawiki.action.view.dblClickEdit';
 257                 }
 258
 259                 if ( $out->isSyndicated() ) {
 260                         $modules['styles']['syndicate'][] = 'mediawiki.feedlink';
 261                 }
 262
 263                 return $modules;
 264         }
 265
 266         /**
 267          * Preload the existence of three commonly-requested pages in a single query
 268          */
 269         protected function preloadExistence() {
 270                 $titles = [];
 271
 272                 // User/talk link
 273                 $user = $this->getUser();
 274                 if ( $user->isLoggedIn() ) {
 275                         $titles[] = $user->getUserPage();
 276                         $titles[] = $user->getTalkPage();
 277                 }
 278
 279                 // Check, if the page can hold some kind of content, otherwise do nothing
 280                 $title = $this->getRelevantTitle();
 281                 if ( $title->canExist() ) {
 282                         if ( $title->isTalkPage() ) {
 283                                 $titles[] = $title->getSubjectPage();
 284                         } else {
 285                                 $titles[] = $title->getTalkPage();
 286                         }
 287                 }
 288
 289                 // Footer links (used by SkinTemplate::prepareQuickTemplate)
 290                 foreach ( [
 291                         $this->footerLinkTitle( 'privacy', 'privacypage' ),
 292                         $this->footerLinkTitle( 'aboutsite', 'aboutpage' ),
 293                         $this->footerLinkTitle( 'disclaimers', 'disclaimerpage' ),
 294                 ] as $title ) {
 295                         if ( $title ) {
 296                                 $titles[] = $title;
 297                         }
 298                 }
 299
 300                 Hooks::run( 'SkinPreloadExistence', [ &$titles, $this ] );
 301
 302                 if ( $titles ) {
 303                         $lb = new LinkBatch( $titles );
 304                         $lb->setCaller( __METHOD__ );
 305                         $lb->execute();
 306                 }
 307         }
 308
 309         /**
 310          * Get the current revision ID
 311          *
 312          * @return int
 313          */
 314         public function getRevisionId() {
 315                 return $this->getOutput()->getRevisionId();
 316         }
 317
 318         /**
 319          * Whether the revision displayed is the latest revision of the page
 320          *
 321          * @return bool
 322          */
 323         public function isRevisionCurrent() {
 324                 $revID = $this->getRevisionId();
 325                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 326         }
 327
 328         /**
 329          * Set the "relevant" title
 330          * @see self::getRelevantTitle()
 331          * @param Title $t
 332          */
 333         public function setRelevantTitle( $t ) {
 334                 $this->mRelevantTitle = $t;
 335         }
 336
 337         /**
 338          * Return the "relevant" title.
 339          * A "relevant" title is not necessarily the actual title of the page.
 340          * Special pages like Special:MovePage use set the page they are acting on
 341          * as their "relevant" title, this allows the skin system to display things
 342          * such as content tabs which belong to to that page instead of displaying
 343          * a basic special page tab which has almost no meaning.
 344          *
 345          * @return Title
 346          */
 347         public function getRelevantTitle() {
 348                 if ( isset( $this->mRelevantTitle ) ) {
 349                         return $this->mRelevantTitle;
 350                 }
 351                 return $this->getTitle();
 352         }
 353
 354         /**
 355          * Set the "relevant" user
 356          * @see self::getRelevantUser()
 357          * @param User $u
 358          */
 359         public function setRelevantUser( $u ) {
 360                 $this->mRelevantUser = $u;
 361         }
 362
 363         /**
 364          * Return the "relevant" user.
 365          * A "relevant" user is similar to a relevant title. Special pages like
 366          * Special:Contributions mark the user which they are relevant to so that
 367          * things like the toolbox can display the information they usually are only
 368          * able to display on a user's userpage and talkpage.
 369          * @return User
 370          */
 371         public function getRelevantUser() {
 372                 if ( isset( $this->mRelevantUser ) ) {
 373                         return $this->mRelevantUser;
 374                 }
 375                 $title = $this->getRelevantTitle();
 376                 if ( $title->hasSubjectNamespace( NS_USER ) ) {
 377                         $rootUser = $title->getRootText();
 378                         if ( User::isIP( $rootUser ) ) {
 379                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 380                         } else {
 381                                 $user = User::newFromName( $rootUser, false );
 382
 383                                 if ( $user ) {
 384                                         $user->load( User::READ_NORMAL );
 385
 386                                         if ( $user->isLoggedIn() ) {
 387                                                 $this->mRelevantUser = $user;
 388                                         }
 389                                 }
 390                         }
 391                         return $this->mRelevantUser;
 392                 }
 393                 return null;
 394         }
 395
 396         /**
 397          * Outputs the HTML generated by other functions.
 398          * @param OutputPage $out
 399          */
 400         abstract function outputPage( OutputPage $out = null );
 401
 402         /**
 403          * @param array $data
 404          * @return string
 405          */
 406         static function makeVariablesScript( $data ) {
 407                 if ( $data ) {
 408                         return ResourceLoader::makeInlineScript(
 409                                 ResourceLoader::makeConfigSetScript( $data )
 410                         );
 411                 } else {
 412                         return '';
 413                 }
 414         }
 415
 416         /**
 417          * Get the query to generate a dynamic stylesheet
 418          *
 419          * @return array
 420          */
 421         public static function getDynamicStylesheetQuery() {
 422                 global $wgSquidMaxage;
 423
 424                 return [
 425                                 'action' => 'raw',
 426                                 'maxage' => $wgSquidMaxage,
 427                                 'usemsgcache' => 'yes',
 428                                 'ctype' => 'text/css',
 429                                 'smaxage' => $wgSquidMaxage,
 430                         ];
 431         }
 432
 433         /**
 434          * Hook point for adding style modules to OutputPage.
 435          *
 436          * @deprecated since 1.32 Use getDefaultModules() instead.
 437          * @param OutputPage $out Legacy parameter, identical to $this->getOutput()
 438          */
 439         public function setupSkinUserCss( OutputPage $out ) {
 440                 // Stub.
 441         }
 442
 443         /**
 444          * TODO: document
 445          * @param Title $title
 446          * @return string
 447          */
 448         function getPageClasses( $title ) {
 449                 $numeric = 'ns-' . $title->getNamespace();
 450
 451                 if ( $title->isSpecialPage() ) {
 452                         $type = 'ns-special';
 453                         // T25315: provide a class based on the canonical special page name without subpages
 454                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 455                         if ( $canonicalName ) {
 456                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 457                         } else {
 458                                 $type .= ' mw-invalidspecialpage';
 459                         }
 460                 } elseif ( $title->isTalkPage() ) {
 461                         $type = 'ns-talk';
 462                 } else {
 463                         $type = 'ns-subject';
 464                 }
 465
 466                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 467                 $root = Sanitizer::escapeClass( 'rootpage-' . $title->getRootTitle()->getPrefixedText() );
 468
 469                 return "$numeric $type $name $root";
 470         }
 471
 472         /**
 473          * Return values for <html> element
 474          * @return array Array of associative name-to-value elements for <html> element
 475          */
 476         public function getHtmlElementAttributes() {
 477                 $lang = $this->getLanguage();
 478                 return [
 479                         'lang' => $lang->getHtmlCode(),
 480                         'dir' => $lang->getDir(),
 481                         'class' => 'client-nojs',
 482                 ];
 483         }
 484
 485         /**
 486          * This will be called by OutputPage::headElement when it is creating the
 487          * "<body>" tag, skins can override it if they have a need to add in any
 488          * body attributes or classes of their own.
 489          * @param OutputPage $out
 490          * @param array &$bodyAttrs
 491          */
 492         function addToBodyAttributes( $out, &$bodyAttrs ) {
 493                 // does nothing by default
 494         }
 495
 496         /**
 497          * URL to the logo
 498          * @return string
 499          */
 500         function getLogo() {
 501                 global $wgLogo;
 502                 return $wgLogo;
 503         }
 504
 505         /**
 506          * Whether the logo should be preloaded with an HTTP link header or not
 507          * @since 1.29
 508          * @return bool
 509          */
 510         public function shouldPreloadLogo() {
 511                 return false;
 512         }
 513
 514         /**
 515          * @return string HTML
 516          */
 517         function getCategoryLinks() {
 518                 global $wgUseCategoryBrowser;
 519
 520                 $out = $this->getOutput();
 521                 $allCats = $out->getCategoryLinks();
 522
 523                 if ( !count( $allCats ) ) {
 524                         return '';
 525                 }
 526
 527                 $embed = "<li>";
 528                 $pop = "</li>";
 529
 530                 $s = '';
 531                 $colon = $this->msg( 'colon-separator' )->escaped();
 532
 533                 if ( !empty( $allCats['normal'] ) ) {
 534                         $t = $embed . implode( "{$pop}{$embed}", $allCats['normal'] ) . $pop;
 535
 536                         $msg = $this->msg( 'pagecategories' )->numParams( count( $allCats['normal'] ) )->escaped();
 537                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 538                         $title = Title::newFromText( $linkPage );
 539                         $link = $title ? Linker::link( $title, $msg ) : $msg;
 540                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 541                                 $link . $colon . '<ul>' . $t . '</ul>' . '</div>';
 542                 }
 543
 544                 # Hidden categories
 545                 if ( isset( $allCats['hidden'] ) ) {
 546                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 547                                 $class = ' mw-hidden-cats-user-shown';
 548                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 549                                 $class = ' mw-hidden-cats-ns-shown';
 550                         } else {
 551                                 $class = ' mw-hidden-cats-hidden';
 552                         }
 553
 554                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 555                                 $this->msg( 'hidden-categories' )->numParams( count( $allCats['hidden'] ) )->escaped() .
 556                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}", $allCats['hidden'] ) . $pop . '</ul>' .
 557                                 '</div>';
 558                 }
 559
 560                 # optional 'dmoz-like' category browser. Will be shown under the list
 561                 # of categories an article belong to
 562                 if ( $wgUseCategoryBrowser ) {
 563                         $s .= '<br /><hr />';
 564
 565                         # get a big array of the parents tree
 566                         $parenttree = $this->getTitle()->getParentCategoryTree();
 567                         # Skin object passed by reference cause it can not be
 568                         # accessed under the method subfunction drawCategoryBrowser
 569                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 570                         # Clean out bogus first entry and sort them
 571                         unset( $tempout[0] );
 572                         asort( $tempout );
 573                         # Output one per line
 574                         $s .= implode( "<br />\n", $tempout );
 575                 }
 576
 577                 return $s;
 578         }
 579
 580         /**
 581          * Render the array as a series of links.
 582          * @param array $tree Categories tree returned by Title::getParentCategoryTree
 583          * @return string Separated by &gt;, terminate with "\n"
 584          */
 585         function drawCategoryBrowser( $tree ) {
 586                 $return = '';
 587
 588                 foreach ( $tree as $element => $parent ) {
 589                         if ( empty( $parent ) ) {
 590                                 # element start a new list
 591                                 $return .= "\n";
 592                         } else {
 593                                 # grab the others elements
 594                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 595                         }
 596
 597                         # add our current element to the list
 598                         $eltitle = Title::newFromText( $element );
 599                         $return .= Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 600                 }
 601
 602                 return $return;
 603         }
 604
 605         /**
 606          * @return string HTML
 607          */
 608         function getCategories() {
 609                 $out = $this->getOutput();
 610                 $catlinks = $this->getCategoryLinks();
 611
 612                 // Check what we're showing
 613                 $allCats = $out->getCategoryLinks();
 614                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 615                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 616
 617                 $classes = [ 'catlinks' ];
 618                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 619                         $classes[] = 'catlinks-allhidden';
 620                 }
 621
 622                 return Html::rawElement(
 623                         'div',
 624                         [ 'id' => 'catlinks', 'class' => $classes, 'data-mw' => 'interface' ],
 625                         $catlinks
 626                 );
 627         }
 628
 629         /**
 630          * This runs a hook to allow extensions placing their stuff after content
 631          * and article metadata (e.g. categories).
 632          * Note: This function has nothing to do with afterContent().
 633          *
 634          * This hook is placed here in order to allow using the same hook for all
 635          * skins, both the SkinTemplate based ones and the older ones, which directly
 636          * use this class to get their data.
 637          *
 638          * The output of this function gets processed in SkinTemplate::outputPage() for
 639          * the SkinTemplate based skins, all other skins should directly echo it.
 640          *
 641          * @return string Empty by default, if not changed by any hook function.
 642          */
 643         protected function afterContentHook() {
 644                 $data = '';
 645
 646                 if ( Hooks::run( 'SkinAfterContent', [ &$data, $this ] ) ) {
 647                         // adding just some spaces shouldn't toggle the output
 648                         // of the whole <div/>, so we use trim() here
 649                         if ( trim( $data ) != '' ) {
 650                                 // Doing this here instead of in the skins to
 651                                 // ensure that the div has the same ID in all
 652                                 // skins
 653                                 $data = "<div id='mw-data-after-content'>\n" .
 654                                         "\t$data\n" .
 655                                         "</div>\n";
 656                         }
 657                 } else {
 658                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 659                 }
 660
 661                 return $data;
 662         }
 663
 664         /**
 665          * Generate debug data HTML for displaying at the bottom of the main content
 666          * area.
 667          * @return string HTML containing debug data, if enabled (otherwise empty).
 668          */
 669         protected function generateDebugHTML() {
 670                 return MWDebug::getHTMLDebugLog();
 671         }
 672
 673         /**
 674          * This gets called shortly before the "</body>" tag.
 675          *
 676          * @return string HTML-wrapped JS code to be put before "</body>"
 677          */
 678         function bottomScripts() {
 679                 // TODO and the suckage continues. This function is really just a wrapper around
 680                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 681                 // up at some point
 682                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 683                 Hooks::run( 'SkinAfterBottomScripts', [ $this, &$bottomScriptText ] );
 684
 685                 return $bottomScriptText;
 686         }
 687
 688         /**
 689          * Text with the permalink to the source page,
 690          * usually shown on the footer of a printed page
 691          *
 692          * @return string HTML text with an URL
 693          */
 694         function printSource() {
 695                 $oldid = $this->getRevisionId();
 696                 if ( $oldid ) {
 697                         $canonicalUrl = $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid );
 698                         $url = htmlspecialchars( wfExpandIRI( $canonicalUrl ) );
 699                 } else {
 700                         // oldid not available for non existing pages
 701                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
 702                 }
 703
 704                 return $this->msg( 'retrievedfrom' )
 705                         ->rawParams( '<a dir="ltr" href="' . $url . '">' . $url . '</a>' )
 706                         ->parse();
 707         }
 708
 709         /**
 710          * @return string HTML
 711          */
 712         function getUndeleteLink() {
 713                 $action = $this->getRequest()->getVal( 'action', 'view' );
 714
 715                 if ( $this->getTitle()->userCan( 'deletedhistory', $this->getUser() ) &&
 716                         ( !$this->getTitle()->exists() || $action == 'history' ) ) {
 717                         $n = $this->getTitle()->isDeleted();
 718
 719                         if ( $n ) {
 720                                 if ( $this->getTitle()->quickUserCan( 'undelete', $this->getUser() ) ) {
 721                                         $msg = 'thisisdeleted';
 722                                 } else {
 723                                         $msg = 'viewdeleted';
 724                                 }
 725
 726                                 return $this->msg( $msg )->rawParams(
 727                                         Linker::linkKnown(
 728                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 729                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 730                                         )->escaped();
 731                         }
 732                 }
 733
 734                 return '';
 735         }
 736
 737         /**
 738          * @param OutputPage $out Defaults to $this->getOutput() if left as null
 739          * @return string
 740          */
 741         function subPageSubtitle( $out = null ) {
 742                 if ( $out === null ) {
 743                         $out = $this->getOutput();
 744                 }
 745                 $title = $out->getTitle();
 746                 $subpages = '';
 747
 748                 if ( !Hooks::run( 'SkinSubPageSubtitle', [ &$subpages, $this, $out ] ) ) {
 749                         return $subpages;
 750                 }
 751
 752                 if ( $out->isArticle() && MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 753                         $ptext = $title->getPrefixedText();
 754                         if ( strpos( $ptext, '/' ) !== false ) {
 755                                 $links = explode( '/', $ptext );
 756                                 array_pop( $links );
 757                                 $c = 0;
 758                                 $growinglink = '';
 759                                 $display = '';
 760                                 $lang = $this->getLanguage();
 761
 762                                 foreach ( $links as $link ) {
 763                                         $growinglink .= $link;
 764                                         $display .= $link;
 765                                         $linkObj = Title::newFromText( $growinglink );
 766
 767                                         if ( is_object( $linkObj ) && $linkObj->isKnown() ) {
 768                                                 $getlink = Linker::linkKnown(
 769                                                         $linkObj,
 770                                                         htmlspecialchars( $display )
 771                                                 );
 772
 773                                                 $c++;
 774
 775                                                 if ( $c > 1 ) {
 776                                                         $subpages .= $lang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
 777                                                 } else {
 778                                                         $subpages .= '&lt; ';
 779                                                 }
 780
 781                                                 $subpages .= $getlink;
 782                                                 $display = '';
 783                                         } else {
 784                                                 $display .= '/';
 785                                         }
 786                                         $growinglink .= '/';
 787                                 }
 788                         }
 789                 }
 790
 791                 return $subpages;
 792         }
 793
 794         /**
 795          * @return string
 796          */
 797         function getSearchLink() {
 798                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 799                 return $searchPage->getLocalURL();
 800         }
 801
 802         /**
 803          * @return string
 804          */
 805         function escapeSearchLink() {
 806                 return htmlspecialchars( $this->getSearchLink() );
 807         }
 808
 809         /**
 810          * @param string $type
 811          * @return string
 812          */
 813         function getCopyright( $type = 'detect' ) {
 814                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 815
 816                 if ( $type == 'detect' ) {
 817                         if ( !$this->isRevisionCurrent()
 818                                 && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled()
 819                         ) {
 820                                 $type = 'history';
 821                         } else {
 822                                 $type = 'normal';
 823                         }
 824                 }
 825
 826                 if ( $type == 'history' ) {
 827                         $msg = 'history_copyright';
 828                 } else {
 829                         $msg = 'copyright';
 830                 }
 831
 832                 if ( $wgRightsPage ) {
 833                         $title = Title::newFromText( $wgRightsPage );
 834                         $link = Linker::linkKnown( $title, $wgRightsText );
 835                 } elseif ( $wgRightsUrl ) {
 836                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 837                 } elseif ( $wgRightsText ) {
 838                         $link = $wgRightsText;
 839                 } else {
 840                         # Give up now
 841                         return '';
 842                 }
 843
 844                 // Allow for site and per-namespace customization of copyright notice.
 845                 // @todo Remove deprecated $forContent param from hook handlers and then remove here.
 846                 $forContent = true;
 847
 848                 Hooks::run(
 849                         'SkinCopyrightFooter',
 850                         [ $this->getTitle(), $type, &$msg, &$link, &$forContent ]
 851                 );
 852
 853                 return $this->msg( $msg )->rawParams( $link )->text();
 854         }
 855
 856         /**
 857          * @return null|string
 858          */
 859         function getCopyrightIcon() {
 860                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgFooterIcons;
 861
 862                 $out = '';
 863
 864                 if ( $wgFooterIcons['copyright']['copyright'] ) {
 865                         $out = $wgFooterIcons['copyright']['copyright'];
 866                 } elseif ( $wgRightsIcon ) {
 867                         $icon = htmlspecialchars( $wgRightsIcon );
 868
 869                         if ( $wgRightsUrl ) {
 870                                 $url = htmlspecialchars( $wgRightsUrl );
 871                                 $out .= '<a href="' . $url . '">';
 872                         }
 873
 874                         $text = htmlspecialchars( $wgRightsText );
 875                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 876
 877                         if ( $wgRightsUrl ) {
 878                                 $out .= '</a>';
 879                         }
 880                 }
 881
 882                 return $out;
 883         }
 884
 885         /**
 886          * Gets the powered by MediaWiki icon.
 887          * @return string
 888          */
 889         function getPoweredBy() {
 890                 global $wgResourceBasePath;
 891
 892                 $url1 = htmlspecialchars(
 893                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_88x31.png"
 894                 );
 895                 $url1_5 = htmlspecialchars(
 896                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_132x47.png"
 897                 );
 898                 $url2 = htmlspecialchars(
 899                         "$wgResourceBasePath/resources/assets/poweredby_mediawiki_176x62.png"
 900                 );
 901                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url1
 902                         . '" srcset="' . $url1_5 . ' 1.5x, ' . $url2 . ' 2x" '
 903                         . 'height="31" width="88" alt="Powered by MediaWiki" /></a>';
 904                 Hooks::run( 'SkinGetPoweredBy', [ &$text, $this ] );
 905                 return $text;
 906         }
 907
 908         /**
 909          * Get the timestamp of the latest revision, formatted in user language
 910          *
 911          * @return string
 912          */
 913         protected function lastModified() {
 914                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 915
 916                 # No cached timestamp, load it from the database
 917                 if ( $timestamp === null ) {
 918                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 919                 }
 920
 921                 if ( $timestamp ) {
 922                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 923                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 924                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->parse();
 925                 } else {
 926                         $s = '';
 927                 }
 928
 929                 if ( MediaWikiServices::getInstance()->getDBLoadBalancer()->getLaggedReplicaMode() ) {
 930                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->parse() . '</strong>';
 931                 }
 932
 933                 return $s;
 934         }
 935
 936         /**
 937          * @param string $align
 938          * @return string
 939          */
 940         function logoText( $align = '' ) {
 941                 if ( $align != '' ) {
 942                         $a = " style='float: {$align};'";
 943                 } else {
 944                         $a = '';
 945                 }
 946
 947                 $mp = $this->msg( 'mainpage' )->escaped();
 948                 $mptitle = Title::newMainPage();
 949                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 950
 951                 $logourl = $this->getLogo();
 952                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 953
 954                 return $s;
 955         }
 956
 957         /**
 958          * Renders a $wgFooterIcons icon according to the method's arguments
 959          * @param array $icon The icon to build the html for, see $wgFooterIcons
 960          *   for the format of this array.
 961          * @param bool|string $withImage Whether to use the icon's image or output
 962          *   a text-only footericon.
 963          * @return string HTML
 964          */
 965         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 966                 if ( is_string( $icon ) ) {
 967                         $html = $icon;
 968                 } else { // Assuming array
 969                         $url = isset( $icon["url"] ) ? $icon["url"] : null;
 970                         unset( $icon["url"] );
 971                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 972                                 // do this the lazy way, just pass icon data as an attribute array
 973                                 $html = Html::element( 'img', $icon );
 974                         } else {
 975                                 $html = htmlspecialchars( $icon["alt"] );
 976                         }
 977                         if ( $url ) {
 978                                 global $wgExternalLinkTarget;
 979                                 $html = Html::rawElement( 'a',
 980                                         [ "href" => $url, "target" => $wgExternalLinkTarget ],
 981                                         $html );
 982                         }
 983                 }
 984                 return $html;
 985         }
 986
 987         /**
 988          * Gets the link to the wiki's main page.
 989          * @return string
 990          */
 991         function mainPageLink() {
 992                 $s = Linker::linkKnown(
 993                         Title::newMainPage(),
 994                         $this->msg( 'mainpage' )->escaped()
 995                 );
 996
 997                 return $s;
 998         }
 999
1000         /**
1001          * Returns an HTML link for use in the footer
1002          * @param string $desc The i18n message key for the link text
1003          * @param string $page The i18n message key for the page to link to
1004          * @return string HTML anchor
1005          */
1006         public function footerLink( $desc, $page ) {
1007                 $title = $this->footerLinkTitle( $desc, $page );
1008                 if ( !$title ) {
1009                         return '';
1010                 }
1011
1012                 return Linker::linkKnown(
1013                         $title,
1014                         $this->msg( $desc )->escaped()
1015                 );
1016         }
1017
1018         /**
1019          * @param string $desc
1020          * @param string $page
1021          * @return Title|null
1022          */
1023         private function footerLinkTitle( $desc, $page ) {
1024                 // If the link description has been set to "-" in the default language,
1025                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
1026                         // then it is disabled, for all languages.
1027                         return null;
1028                 }
1029                 // Otherwise, we display the link for the user, described in their
1030                 // language (which may or may not be the same as the default language),
1031                 // but we make the link target be the one site-wide page.
1032                 $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
1033
1034                 return $title ?: null;
1035         }
1036
1037         /**
1038          * Gets the link to the wiki's privacy policy page.
1039          * @return string HTML
1040          */
1041         function privacyLink() {
1042                 return $this->footerLink( 'privacy', 'privacypage' );
1043         }
1044
1045         /**
1046          * Gets the link to the wiki's about page.
1047          * @return string HTML
1048          */
1049         function aboutLink() {
1050                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1051         }
1052
1053         /**
1054          * Gets the link to the wiki's general disclaimers page.
1055          * @return string HTML
1056          */
1057         function disclaimerLink() {
1058                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1059         }
1060
1061         /**
1062          * Return URL options for the 'edit page' link.
1063          * This may include an 'oldid' specifier, if the current page view is such.
1064          *
1065          * @return array
1066          * @private
1067          */
1068         function editUrlOptions() {
1069                 $options = [ 'action' => 'edit' ];
1070
1071                 if ( !$this->isRevisionCurrent() ) {
1072                         $options['oldid'] = intval( $this->getRevisionId() );
1073                 }
1074
1075                 return $options;
1076         }
1077
1078         /**
1079          * @param User|int $id
1080          * @return bool
1081          */
1082         function showEmailUser( $id ) {
1083                 if ( $id instanceof User ) {
1084                         $targetUser = $id;
1085                 } else {
1086                         $targetUser = User::newFromId( $id );
1087                 }
1088
1089                 # The sending user must have a confirmed email address and the receiving
1090                 # user must accept emails from the sender.
1091                 return $this->getUser()->canSendEmail()
1092                         && SpecialEmailUser::validateTarget( $targetUser, $this->getUser() ) === '';
1093         }
1094
1095         /**
1096          * Return a fully resolved style path url to images or styles stored in the current skins's folder.
1097          * This method returns a url resolved using the configured skin style path
1098          * and includes the style version inside of the url.
1099          *
1100          * Requires $stylename to be set, otherwise throws MWException.
1101          *
1102          * @param string $name The name or path of a skin resource file
1103          * @return string The fully resolved style path url including styleversion
1104          * @throws MWException
1105          */
1106         function getSkinStylePath( $name ) {
1107                 global $wgStylePath, $wgStyleVersion;
1108
1109                 if ( $this->stylename === null ) {
1110                         $class = static::class;
1111                         throw new MWException( "$class::\$stylename must be set to use getSkinStylePath()" );
1112                 }
1113
1114                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1115         }
1116
1117         /* these are used extensively in SkinTemplate, but also some other places */
1118
1119         /**
1120          * @param string|string[] $urlaction
1121          * @return string
1122          */
1123         static function makeMainPageUrl( $urlaction = '' ) {
1124                 $title = Title::newMainPage();
1125                 self::checkTitle( $title, '' );
1126
1127                 return $title->getLinkURL( $urlaction );
1128         }
1129
1130         /**
1131          * Make a URL for a Special Page using the given query and protocol.
1132          *
1133          * If $proto is set to null, make a local URL. Otherwise, make a full
1134          * URL with the protocol specified.
1135          *
1136          * @param string $name Name of the Special page
1137          * @param string|string[] $urlaction Query to append
1138          * @param string|null $proto Protocol to use or null for a local URL
1139          * @return string
1140          */
1141         static function makeSpecialUrl( $name, $urlaction = '', $proto = null ) {
1142                 $title = SpecialPage::getSafeTitleFor( $name );
1143                 if ( is_null( $proto ) ) {
1144                         return $title->getLocalURL( $urlaction );
1145                 } else {
1146                         return $title->getFullURL( $urlaction, false, $proto );
1147                 }
1148         }
1149
1150         /**
1151          * @param string $name
1152          * @param string $subpage
1153          * @param string|string[] $urlaction
1154          * @return string
1155          */
1156         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1157                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1158                 return $title->getLocalURL( $urlaction );
1159         }
1160
1161         /**
1162          * @param string $name
1163          * @param string|string[] $urlaction
1164          * @return string
1165          */
1166         static function makeI18nUrl( $name, $urlaction = '' ) {
1167                 $title = Title::newFromText( wfMessage( $name )->inContentLanguage()->text() );
1168                 self::checkTitle( $title, $name );
1169                 return $title->getLocalURL( $urlaction );
1170         }
1171
1172         /**
1173          * @param string $name
1174          * @param string|string[] $urlaction
1175          * @return string
1176          */
1177         static function makeUrl( $name, $urlaction = '' ) {
1178                 $title = Title::newFromText( $name );
1179                 self::checkTitle( $title, $name );
1180
1181                 return $title->getLocalURL( $urlaction );
1182         }
1183
1184         /**
1185          * If url string starts with http, consider as external URL, else
1186          * internal
1187          * @param string $name
1188          * @return string URL
1189          */
1190         static function makeInternalOrExternalUrl( $name ) {
1191                 if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $name ) ) {
1192                         return $name;
1193                 } else {
1194                         return self::makeUrl( $name );
1195                 }
1196         }
1197
1198         /**
1199          * this can be passed the NS number as defined in Language.php
1200          * @param string $name
1201          * @param string|string[] $urlaction
1202          * @param int $namespace
1203          * @return string
1204          */
1205         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1206                 $title = Title::makeTitleSafe( $namespace, $name );
1207                 self::checkTitle( $title, $name );
1208
1209                 return $title->getLocalURL( $urlaction );
1210         }
1211
1212         /**
1213          * these return an array with the 'href' and boolean 'exists'
1214          * @param string $name
1215          * @param string|string[] $urlaction
1216          * @return array
1217          */
1218         static function makeUrlDetails( $name, $urlaction = '' ) {
1219                 $title = Title::newFromText( $name );
1220                 self::checkTitle( $title, $name );
1221
1222                 return [
1223                         'href' => $title->getLocalURL( $urlaction ),
1224                         'exists' => $title->isKnown(),
1225                 ];
1226         }
1227
1228         /**
1229          * Make URL details where the article exists (or at least it's convenient to think so)
1230          * @param string $name Article name
1231          * @param string|string[] $urlaction
1232          * @return array
1233          */
1234         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1235                 $title = Title::newFromText( $name );
1236                 self::checkTitle( $title, $name );
1237
1238                 return [
1239                         'href' => $title->getLocalURL( $urlaction ),
1240                         'exists' => true
1241                 ];
1242         }
1243
1244         /**
1245          * make sure we have some title to operate on
1246          *
1247          * @param Title &$title
1248          * @param string $name
1249          */
1250         static function checkTitle( &$title, $name ) {
1251                 if ( !is_object( $title ) ) {
1252                         $title = Title::newFromText( $name );
1253                         if ( !is_object( $title ) ) {
1254                                 $title = Title::newFromText( '--error: link target missing--' );
1255                         }
1256                 }
1257         }
1258
1259         /**
1260          * Build an array that represents the sidebar(s), the navigation bar among them.
1261          *
1262          * BaseTemplate::getSidebar can be used to simplify the format and id generation in new skins.
1263          *
1264          * The format of the returned array is [ heading => content, ... ], where:
1265          * - heading is the heading of a navigation portlet. It is either:
1266          *   - magic string to be handled by the skins ('SEARCH' / 'LANGUAGES' / 'TOOLBOX' / ...)
1267          *   - a message name (e.g. 'navigation'), the message should be HTML-escaped by the skin
1268          *   - plain text, which should be HTML-escaped by the skin
1269          * - content is the contents of the portlet. It is either:
1270          *   - HTML text (<ul><li>...</li>...</ul>)
1271          *   - array of link data in a format accepted by BaseTemplate::makeListItem()
1272          *   - (for a magic string as a key, any value)
1273          *
1274          * Note that extensions can control the sidebar contents using the SkinBuildSidebar hook
1275          * and can technically insert anything in here; skin creators are expected to handle
1276          * values described above.
1277          *
1278          * @return array
1279          */
1280         public function buildSidebar() {
1281                 global $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1282
1283                 $callback = function ( $old = null, &$ttl = null ) {
1284                         $bar = [];
1285                         $this->addToSidebar( $bar, 'sidebar' );
1286                         Hooks::run( 'SkinBuildSidebar', [ $this, &$bar ] );
1287                         if ( MessageCache::singleton()->isDisabled() ) {
1288                                 $ttl = WANObjectCache::TTL_UNCACHEABLE; // bug T133069
1289                         }
1290
1291                         return $bar;
1292                 };
1293
1294                 $msgCache = MessageCache::singleton();
1295                 $wanCache = MediaWikiServices::getInstance()->getMainWANObjectCache();
1296
1297                 $sidebar = $wgEnableSidebarCache
1298                         ? $wanCache->getWithSetCallback(
1299                                 $wanCache->makeKey( 'sidebar', $this->getLanguage()->getCode() ),
1300                                 $wgSidebarCacheExpiry,
1301                                 $callback,
1302                                 [
1303                                         'checkKeys' => [
1304                                                 // Unless there is both no exact $code override nor an i18n definition
1305                                                 // in the the software, the only MediaWiki page to check is for $code.
1306                                                 $msgCache->getCheckKey( $this->getLanguage()->getCode() )
1307                                         ],
1308                                         'lockTSE' => 30
1309                                 ]
1310                         )
1311                         : $callback();
1312
1313                 // Apply post-processing to the cached value
1314                 Hooks::run( 'SidebarBeforeOutput', [ $this, &$sidebar ] );
1315
1316                 return $sidebar;
1317         }
1318
1319         /**
1320          * Add content from a sidebar system message
1321          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1322          *
1323          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1324          *
1325          * @param array &$bar
1326          * @param string $message
1327          */
1328         public function addToSidebar( &$bar, $message ) {
1329                 $this->addToSidebarPlain( $bar, wfMessage( $message )->inContentLanguage()->plain() );
1330         }
1331
1332         /**
1333          * Add content from plain text
1334          * @since 1.17
1335          * @param array &$bar
1336          * @param string $text
1337          * @return array
1338          */
1339         function addToSidebarPlain( &$bar, $text ) {
1340                 $lines = explode( "\n", $text );
1341
1342                 $heading = '';
1343                 $messageTitle = $this->getConfig()->get( 'EnableSidebarCache' )
1344                         ? Title::newMainPage() : $this->getTitle();
1345
1346                 foreach ( $lines as $line ) {
1347                         if ( strpos( $line, '*' ) !== 0 ) {
1348                                 continue;
1349                         }
1350                         $line = rtrim( $line, "\r" ); // for Windows compat
1351
1352                         if ( strpos( $line, '**' ) !== 0 ) {
1353                                 $heading = trim( $line, '* ' );
1354                                 if ( !array_key_exists( $heading, $bar ) ) {
1355                                         $bar[$heading] = [];
1356                                 }
1357                         } else {
1358                                 $line = trim( $line, '* ' );
1359
1360                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1361                                         $line = MessageCache::singleton()->transform( $line, false, null, $messageTitle );
1362                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1363                                         if ( count( $line ) !== 2 ) {
1364                                                 // Second sanity check, could be hit by people doing
1365                                                 // funky stuff with parserfuncs... (T35321)
1366                                                 continue;
1367                                         }
1368
1369                                         $extraAttribs = [];
1370
1371                                         $msgLink = $this->msg( $line[0] )->title( $messageTitle )->inContentLanguage();
1372                                         if ( $msgLink->exists() ) {
1373                                                 $link = $msgLink->text();
1374                                                 if ( $link == '-' ) {
1375                                                         continue;
1376                                                 }
1377                                         } else {
1378                                                 $link = $line[0];
1379                                         }
1380                                         $msgText = $this->msg( $line[1] )->title( $messageTitle );
1381                                         if ( $msgText->exists() ) {
1382                                                 $text = $msgText->text();
1383                                         } else {
1384                                                 $text = $line[1];
1385                                         }
1386
1387                                         if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $link ) ) {
1388                                                 $href = $link;
1389
1390                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1391                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1392                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1393                                                         $extraAttribs['rel'] = 'nofollow';
1394                                                 }
1395
1396                                                 global $wgExternalLinkTarget;
1397                                                 if ( $wgExternalLinkTarget ) {
1398                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1399                                                 }
1400                                         } else {
1401                                                 $title = Title::newFromText( $link );
1402
1403                                                 if ( $title ) {
1404                                                         $title = $title->fixSpecialName();
1405                                                         $href = $title->getLinkURL();
1406                                                 } else {
1407                                                         $href = 'INVALID-TITLE';
1408                                                 }
1409                                         }
1410
1411                                         $bar[$heading][] = array_merge( [
1412                                                 'text' => $text,
1413                                                 'href' => $href,
1414                                                 'id' => Sanitizer::escapeIdForAttribute( 'n-' . strtr( $line[1], ' ', '-' ) ),
1415                                                 'active' => false,
1416                                         ], $extraAttribs );
1417                                 } else {
1418                                         continue;
1419                                 }
1420                         }
1421                 }
1422
1423                 return $bar;
1424         }
1425
1426         /**
1427          * Gets new talk page messages for the current user and returns an
1428          * appropriate alert message (or an empty string if there are no messages)
1429          * @return string
1430          */
1431         function getNewtalks() {
1432                 $newMessagesAlert = '';
1433                 $user = $this->getUser();
1434                 $newtalks = $user->getNewMessageLinks();
1435                 $out = $this->getOutput();
1436
1437                 // Allow extensions to disable or modify the new messages alert
1438                 if ( !Hooks::run( 'GetNewMessagesAlert', [ &$newMessagesAlert, $newtalks, $user, $out ] ) ) {
1439                         return '';
1440                 }
1441                 if ( $newMessagesAlert ) {
1442                         return $newMessagesAlert;
1443                 }
1444
1445                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1446                         $uTalkTitle = $user->getTalkPage();
1447                         $lastSeenRev = isset( $newtalks[0]['rev'] ) ? $newtalks[0]['rev'] : null;
1448                         $nofAuthors = 0;
1449                         if ( $lastSeenRev !== null ) {
1450                                 $plural = true; // Default if we have a last seen revision: if unknown, use plural
1451                                 $latestRev = Revision::newFromTitle( $uTalkTitle, false, Revision::READ_NORMAL );
1452                                 if ( $latestRev !== null ) {
1453                                         // Singular if only 1 unseen revision, plural if several unseen revisions.
1454                                         $plural = $latestRev->getParentId() !== $lastSeenRev->getId();
1455                                         $nofAuthors = $uTalkTitle->countAuthorsBetween(
1456                                                 $lastSeenRev, $latestRev, 10, 'include_new' );
1457                                 }
1458                         } else {
1459                                 // Singular if no revision -> diff link will show latest change only in any case
1460                                 $plural = false;
1461                         }
1462                         $plural = $plural ? 999 : 1;
1463                         // 999 signifies "more than one revision". We don't know how many, and even if we did,
1464                         // the number of revisions or authors is not necessarily the same as the number of
1465                         // "messages".
1466                         $newMessagesLink = Linker::linkKnown(
1467                                 $uTalkTitle,
1468                                 $this->msg( 'newmessageslinkplural' )->params( $plural )->escaped(),
1469                                 [],
1470                                 [ 'redirect' => 'no' ]
1471                         );
1472
1473                         $newMessagesDiffLink = Linker::linkKnown(
1474                                 $uTalkTitle,
1475                                 $this->msg( 'newmessagesdifflinkplural' )->params( $plural )->escaped(),
1476                                 [],
1477                                 $lastSeenRev !== null
1478                                         ? [ 'oldid' => $lastSeenRev->getId(), 'diff' => 'cur' ]
1479                                         : [ 'diff' => 'cur' ]
1480                         );
1481
1482                         if ( $nofAuthors >= 1 && $nofAuthors <= 10 ) {
1483                                 $newMessagesAlert = $this->msg(
1484                                         'youhavenewmessagesfromusers',
1485                                         $newMessagesLink,
1486                                         $newMessagesDiffLink
1487                                 )->numParams( $nofAuthors, $plural );
1488                         } else {
1489                                 // $nofAuthors === 11 signifies "11 or more" ("more than 10")
1490                                 $newMessagesAlert = $this->msg(
1491                                         $nofAuthors > 10 ? 'youhavenewmessagesmanyusers' : 'youhavenewmessages',
1492                                         $newMessagesLink,
1493                                         $newMessagesDiffLink
1494                                 )->numParams( $plural );
1495                         }
1496                         $newMessagesAlert = $newMessagesAlert->text();
1497                         # Disable CDN cache
1498                         $out->setCdnMaxage( 0 );
1499                 } elseif ( count( $newtalks ) ) {
1500                         $sep = $this->msg( 'newtalkseparator' )->escaped();
1501                         $msgs = [];
1502
1503                         foreach ( $newtalks as $newtalk ) {
1504                                 $msgs[] = Xml::element(
1505                                         'a',
1506                                         [ 'href' => $newtalk['link'] ], $newtalk['wiki']
1507                                 );
1508                         }
1509                         $parts = implode( $sep, $msgs );
1510                         $newMessagesAlert = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1511                         $out->setCdnMaxage( 0 );
1512                 }
1513
1514                 return $newMessagesAlert;
1515         }
1516
1517         /**
1518          * Get a cached notice
1519          *
1520          * @param string $name Message name, or 'default' for $wgSiteNotice
1521          * @return string|bool HTML fragment, or false to indicate that the caller
1522          *   should fall back to the next notice in its sequence
1523          */
1524         private function getCachedNotice( $name ) {
1525                 global $wgRenderHashAppend, $wgContLang;
1526
1527                 $needParse = false;
1528
1529                 if ( $name === 'default' ) {
1530                         // special case
1531                         global $wgSiteNotice;
1532                         $notice = $wgSiteNotice;
1533                         if ( empty( $notice ) ) {
1534                                 return false;
1535                         }
1536                 } else {
1537                         $msg = $this->msg( $name )->inContentLanguage();
1538                         if ( $msg->isBlank() ) {
1539                                 return '';
1540                         } elseif ( $msg->isDisabled() ) {
1541                                 return false;
1542                         }
1543                         $notice = $msg->plain();
1544                 }
1545
1546                 $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
1547                 $parsed = $cache->getWithSetCallback(
1548                         // Use the extra hash appender to let eg SSL variants separately cache
1549                         // Key is verified with md5 hash of unparsed wikitext
1550                         $cache->makeKey( $name, $wgRenderHashAppend, md5( $notice ) ),
1551                         // TTL in seconds
1552                         600,
1553                         function () use ( $notice ) {
1554                                 return $this->getOutput()->parse( $notice );
1555                         }
1556                 );
1557
1558                 return Html::rawElement(
1559                         'div',
1560                         [
1561                                 'id' => 'localNotice',
1562                                 'lang' => $wgContLang->getHtmlCode(),
1563                                 'dir' => $wgContLang->getDir()
1564                         ],
1565                         $parsed
1566                 );
1567         }
1568
1569         /**
1570          * Get the site notice
1571          *
1572          * @return string HTML fragment
1573          */
1574         function getSiteNotice() {
1575                 $siteNotice = '';
1576
1577                 if ( Hooks::run( 'SiteNoticeBefore', [ &$siteNotice, $this ] ) ) {
1578                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1579                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1580                         } else {
1581                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1582                                 if ( $anonNotice === false ) {
1583                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1584                                 } else {
1585                                         $siteNotice = $anonNotice;
1586                                 }
1587                         }
1588                         if ( $siteNotice === false ) {
1589                                 $siteNotice = $this->getCachedNotice( 'default' );
1590                         }
1591                 }
1592
1593                 Hooks::run( 'SiteNoticeAfter', [ &$siteNotice, $this ] );
1594                 return $siteNotice;
1595         }
1596
1597         /**
1598          * Create a section edit link.  This supersedes editSectionLink() and
1599          * editSectionLinkForOther().
1600          *
1601          * @param Title $nt The title being linked to (may not be the same as
1602          *   the current page, if the section is included from a template)
1603          * @param string $section The designation of the section being pointed to,
1604          *   to be included in the link, like "&section=$section"
1605          * @param string $tooltip The tooltip to use for the link: will be escaped
1606          *   and wrapped in the 'editsectionhint' message
1607          * @param string $lang Language code
1608          * @return string HTML to use for edit link
1609          */
1610         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1611                 // HTML generated here should probably have userlangattributes
1612                 // added to it for LTR text on RTL pages
1613
1614                 $lang = wfGetLangObj( $lang );
1615
1616                 $attribs = [];
1617                 if ( !is_null( $tooltip ) ) {
1618                         $attribs['title'] = wfMessage( 'editsectionhint' )->rawParams( $tooltip )
1619                                 ->inLanguage( $lang )->text();
1620                 }
1621
1622                 $links = [
1623                         'editsection' => [
1624                                 'text' => wfMessage( 'editsection' )->inLanguage( $lang )->escaped(),
1625                                 'targetTitle' => $nt,
1626                                 'attribs' => $attribs,
1627                                 'query' => [ 'action' => 'edit', 'section' => $section ],
1628                                 'options' => [ 'noclasses', 'known' ]
1629                         ]
1630                 ];
1631
1632                 Hooks::run( 'SkinEditSectionLinks', [ $this, $nt, $section, $tooltip, &$links, $lang ] );
1633
1634                 $result = '<span class="mw-editsection"><span class="mw-editsection-bracket">[</span>';
1635
1636                 $linksHtml = [];
1637                 foreach ( $links as $k => $linkDetails ) {
1638                         $linksHtml[] = Linker::link(
1639                                 $linkDetails['targetTitle'],
1640                                 $linkDetails['text'],
1641                                 $linkDetails['attribs'],
1642                                 $linkDetails['query'],
1643                                 $linkDetails['options']
1644                         );
1645                 }
1646
1647                 $result .= implode(
1648                         '<span class="mw-editsection-divider">'
1649                                 . wfMessage( 'pipe-separator' )->inLanguage( $lang )->escaped()
1650                                 . '</span>',
1651                         $linksHtml
1652                 );
1653
1654                 $result .= '<span class="mw-editsection-bracket">]</span></span>';
1655                 // Deprecated, use SkinEditSectionLinks hook instead
1656                 Hooks::run(
1657                         'DoEditSectionLink',
1658                         [ $this, $nt, $section, $tooltip, &$result, $lang ],
1659                         '1.25'
1660                 );
1661                 return $result;
1662         }
1663
1664 }