includes/skins/SkinTemplate.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  */
  20
  21 use MediaWiki\Auth\AuthManager;
  22 use MediaWiki\MediaWikiServices;
  23
  24 /**
  25  * Base class for template-based skins.
  26  *
  27  * Template-filler skin base class
  28  * Formerly generic PHPTal (http://phptal.sourceforge.net/) skin
  29  * Based on Brion's smarty skin
  30  * @copyright Copyright © Gabriel Wicke -- http://www.aulinx.de/
  31  *
  32  * @todo Needs some serious refactoring into functions that correspond
  33  * to the computations individual esi snippets need. Most importantly no body
  34  * parsing for most of those of course.
  35  *
  36  * @ingroup Skins
  37  */
  38 class SkinTemplate extends Skin {
  39         /**
  40          * @var string Name of our skin, it probably needs to be all lower case.
  41          *   Child classes should override the default.
  42          */
  43         public $skinname = 'monobook';
  44
  45         /**
  46          * @var string For QuickTemplate, the name of the subclass which will
  47          *   actually fill the template.  Child classes should override the default.
  48          */
  49         public $template = QuickTemplate::class;
  50
  51         public $thispage;
  52         public $titletxt;
  53         public $userpage;
  54         public $thisquery;
  55         public $loggedin;
  56         public $username;
  57         public $userpageUrlDetails;
  58
  59         /**
  60          * Create the template engine object; we feed it a bunch of data
  61          * and eventually it spits out some HTML. Should have interface
  62          * roughly equivalent to PHPTAL 0.7.
  63          *
  64          * @param string $classname
  65          * @return QuickTemplate
  66          * @private
  67          */
  68         function setupTemplate( $classname ) {
  69                 return new $classname( $this->getConfig() );
  70         }
  71
  72         /**
  73          * Generates array of language links for the current page
  74          *
  75          * @return array
  76          */
  77         public function getLanguages() {
  78                 global $wgHideInterlanguageLinks;
  79                 if ( $wgHideInterlanguageLinks ) {
  80                         return [];
  81                 }
  82
  83                 $userLang = $this->getLanguage();
  84                 $languageLinks = [];
  85
  86                 foreach ( $this->getOutput()->getLanguageLinks() as $languageLinkText ) {
  87                         $class = 'interlanguage-link interwiki-' . explode( ':', $languageLinkText, 2 )[0];
  88
  89                         $languageLinkTitle = Title::newFromText( $languageLinkText );
  90                         if ( $languageLinkTitle ) {
  91                                 $ilInterwikiCode = $languageLinkTitle->getInterwiki();
  92                                 $ilLangName = Language::fetchLanguageName( $ilInterwikiCode );
  93
  94                                 if ( strval( $ilLangName ) === '' ) {
  95                                         $ilDisplayTextMsg = wfMessage( "interlanguage-link-$ilInterwikiCode" );
  96                                         if ( !$ilDisplayTextMsg->isDisabled() ) {
  97                                                 // Use custom MW message for the display text
  98                                                 $ilLangName = $ilDisplayTextMsg->text();
  99                                         } else {
 100                                                 // Last resort: fallback to the language link target
 101                                                 $ilLangName = $languageLinkText;
 102                                         }
 103                                 } else {
 104                                         // Use the language autonym as display text
 105                                         $ilLangName = $this->formatLanguageName( $ilLangName );
 106                                 }
 107
 108                                 // CLDR extension or similar is required to localize the language name;
 109                                 // otherwise we'll end up with the autonym again.
 110                                 $ilLangLocalName = Language::fetchLanguageName(
 111                                         $ilInterwikiCode,
 112                                         $userLang->getCode()
 113                                 );
 114
 115                                 $languageLinkTitleText = $languageLinkTitle->getText();
 116                                 if ( $ilLangLocalName === '' ) {
 117                                         $ilFriendlySiteName = wfMessage( "interlanguage-link-sitename-$ilInterwikiCode" );
 118                                         if ( !$ilFriendlySiteName->isDisabled() ) {
 119                                                 if ( $languageLinkTitleText === '' ) {
 120                                                         $ilTitle = wfMessage(
 121                                                                 'interlanguage-link-title-nonlangonly',
 122                                                                 $ilFriendlySiteName->text()
 123                                                         )->text();
 124                                                 } else {
 125                                                         $ilTitle = wfMessage(
 126                                                                 'interlanguage-link-title-nonlang',
 127                                                                 $languageLinkTitleText,
 128                                                                 $ilFriendlySiteName->text()
 129                                                         )->text();
 130                                                 }
 131                                         } else {
 132                                                 // we have nothing friendly to put in the title, so fall back to
 133                                                 // displaying the interlanguage link itself in the title text
 134                                                 // (similar to what is done in page content)
 135                                                 $ilTitle = $languageLinkTitle->getInterwiki() .
 136                                                         ":$languageLinkTitleText";
 137                                         }
 138                                 } elseif ( $languageLinkTitleText === '' ) {
 139                                         $ilTitle = wfMessage(
 140                                                 'interlanguage-link-title-langonly',
 141                                                 $ilLangLocalName
 142                                         )->text();
 143                                 } else {
 144                                         $ilTitle = wfMessage(
 145                                                 'interlanguage-link-title',
 146                                                 $languageLinkTitleText,
 147                                                 $ilLangLocalName
 148                                         )->text();
 149                                 }
 150
 151                                 $ilInterwikiCodeBCP47 = LanguageCode::bcp47( $ilInterwikiCode );
 152                                 $languageLink = [
 153                                         'href' => $languageLinkTitle->getFullURL(),
 154                                         'text' => $ilLangName,
 155                                         'title' => $ilTitle,
 156                                         'class' => $class,
 157                                         'link-class' => 'interlanguage-link-target',
 158                                         'lang' => $ilInterwikiCodeBCP47,
 159                                         'hreflang' => $ilInterwikiCodeBCP47,
 160                                 ];
 161                                 Hooks::run(
 162                                         'SkinTemplateGetLanguageLink',
 163                                         [ &$languageLink, $languageLinkTitle, $this->getTitle(), $this->getOutput() ]
 164                                 );
 165                                 $languageLinks[] = $languageLink;
 166                         }
 167                 }
 168
 169                 return $languageLinks;
 170         }
 171
 172         /**
 173          * @return QuickTemplate
 174          */
 175         protected function setupTemplateForOutput() {
 176                 $request = $this->getRequest();
 177                 $user = $this->getUser();
 178                 $title = $this->getTitle();
 179
 180                 $tpl = $this->setupTemplate( $this->template );
 181
 182                 $this->thispage = $title->getPrefixedDBkey();
 183                 $this->titletxt = $title->getPrefixedText();
 184                 $this->userpage = $user->getUserPage()->getPrefixedText();
 185                 $query = [];
 186                 if ( !$request->wasPosted() ) {
 187                         $query = $request->getValues();
 188                         unset( $query['title'] );
 189                         unset( $query['returnto'] );
 190                         unset( $query['returntoquery'] );
 191                 }
 192                 $this->thisquery = wfArrayToCgi( $query );
 193                 $this->loggedin = $user->isLoggedIn();
 194                 $this->username = $user->getName();
 195
 196                 if ( $this->loggedin ) {
 197                         $this->userpageUrlDetails = self::makeUrlDetails( $this->userpage );
 198                 } else {
 199                         # This won't be used in the standard skins, but we define it to preserve the interface
 200                         # To save time, we check for existence
 201                         $this->userpageUrlDetails = self::makeKnownUrlDetails( $this->userpage );
 202                 }
 203
 204                 return $tpl;
 205         }
 206
 207         /**
 208          * Initialize various variables and generate the template
 209          */
 210         function outputPage() {
 211                 Profiler::instance()->setTemplated( true );
 212                 $out = $this->getOutput();
 213
 214                 $this->initPage( $out );
 215                 $tpl = $this->prepareQuickTemplate();
 216                 // execute template
 217                 $res = $tpl->execute();
 218
 219                 // result may be an error
 220                 $this->printOrError( $res );
 221         }
 222
 223         /**
 224          * Wrap the body text with language information and identifiable element
 225          *
 226          * @param Title $title
 227          * @param string $html body text
 228          * @return string html
 229          */
 230         protected function wrapHTML( $title, $html ) {
 231                 # An ID that includes the actual body text; without categories, contentSub, ...
 232                 $realBodyAttribs = [ 'id' => 'mw-content-text' ];
 233
 234                 # Add a mw-content-ltr/rtl class to be able to style based on text
 235                 # direction when the content is different from the UI language (only
 236                 # when viewing)
 237                 # Most information on special pages and file pages is in user language,
 238                 # rather than content language, so those will not get this
 239                 if ( Action::getActionName( $this ) === 'view' &&
 240                         ( !$title->inNamespaces( NS_SPECIAL, NS_FILE ) || $title->isRedirect() ) ) {
 241                         $pageLang = $title->getPageViewLanguage();
 242                         $realBodyAttribs['lang'] = $pageLang->getHtmlCode();
 243                         $realBodyAttribs['dir'] = $pageLang->getDir();
 244                         $realBodyAttribs['class'] = 'mw-content-' . $pageLang->getDir();
 245                 }
 246
 247                 return Html::rawElement( 'div', $realBodyAttribs, $html );
 248         }
 249
 250         /**
 251          * initialize various variables and generate the template
 252          *
 253          * @since 1.23
 254          * @return QuickTemplate The template to be executed by outputPage
 255          */
 256         protected function prepareQuickTemplate() {
 257                 global $wgScript, $wgStylePath, $wgMimeType,
 258                         $wgSitename, $wgLogo, $wgMaxCredits,
 259                         $wgShowCreditsIfMax, $wgArticlePath,
 260                         $wgScriptPath, $wgServer;
 261
 262                 $title = $this->getTitle();
 263                 $request = $this->getRequest();
 264                 $out = $this->getOutput();
 265                 $tpl = $this->setupTemplateForOutput();
 266
 267                 $tpl->set( 'title', $out->getPageTitle() );
 268                 $tpl->set( 'pagetitle', $out->getHTMLTitle() );
 269                 $tpl->set( 'displaytitle', $out->mPageLinkTitle );
 270
 271                 $tpl->set( 'thispage', $this->thispage );
 272                 $tpl->set( 'titleprefixeddbkey', $this->thispage );
 273                 $tpl->set( 'titletext', $title->getText() );
 274                 $tpl->set( 'articleid', $title->getArticleID() );
 275
 276                 $tpl->set( 'isarticle', $out->isArticle() );
 277
 278                 $subpagestr = $this->subPageSubtitle();
 279                 if ( $subpagestr !== '' ) {
 280                         $subpagestr = '<span class="subpages">' . $subpagestr . '</span>';
 281                 }
 282                 $tpl->set( 'subtitle', $subpagestr . $out->getSubtitle() );
 283
 284                 $undelete = $this->getUndeleteLink();
 285                 if ( $undelete === '' ) {
 286                         $tpl->set( 'undelete', '' );
 287                 } else {
 288                         $tpl->set( 'undelete', '<span class="subpages">' . $undelete . '</span>' );
 289                 }
 290
 291                 $tpl->set( 'catlinks', $this->getCategories() );
 292                 if ( $out->isSyndicated() ) {
 293                         $feeds = [];
 294                         foreach ( $out->getSyndicationLinks() as $format => $link ) {
 295                                 $feeds[$format] = [
 296                                         // Messages: feed-atom, feed-rss
 297                                         'text' => $this->msg( "feed-$format" )->text(),
 298                                         'href' => $link
 299                                 ];
 300                         }
 301                         $tpl->set( 'feeds', $feeds );
 302                 } else {
 303                         $tpl->set( 'feeds', false );
 304                 }
 305
 306                 $tpl->set( 'mimetype', $wgMimeType );
 307                 $tpl->set( 'charset', 'UTF-8' );
 308                 $tpl->set( 'wgScript', $wgScript );
 309                 $tpl->set( 'skinname', $this->skinname );
 310                 $tpl->set( 'skinclass', static::class );
 311                 $tpl->set( 'skin', $this );
 312                 $tpl->set( 'stylename', $this->stylename );
 313                 $tpl->set( 'printable', $out->isPrintable() );
 314                 $tpl->set( 'handheld', $request->getBool( 'handheld' ) );
 315                 $tpl->set( 'loggedin', $this->loggedin );
 316                 $tpl->set( 'notspecialpage', !$title->isSpecialPage() );
 317                 $tpl->set( 'searchaction', $this->getSearchLink() );
 318                 $tpl->set( 'searchtitle', SpecialPage::getTitleFor( 'Search' )->getPrefixedDBkey() );
 319                 $tpl->set( 'search', trim( $request->getVal( 'search' ) ) );
 320                 $tpl->set( 'stylepath', $wgStylePath );
 321                 $tpl->set( 'articlepath', $wgArticlePath );
 322                 $tpl->set( 'scriptpath', $wgScriptPath );
 323                 $tpl->set( 'serverurl', $wgServer );
 324                 $tpl->set( 'logopath', $wgLogo );
 325                 $tpl->set( 'sitename', $wgSitename );
 326
 327                 $userLang = $this->getLanguage();
 328                 $userLangCode = $userLang->getHtmlCode();
 329                 $userLangDir = $userLang->getDir();
 330
 331                 $tpl->set( 'lang', $userLangCode );
 332                 $tpl->set( 'dir', $userLangDir );
 333                 $tpl->set( 'rtl', $userLang->isRTL() );
 334
 335                 $tpl->set( 'capitalizeallnouns', $userLang->capitalizeAllNouns() ? ' capitalize-all-nouns' : '' );
 336                 $tpl->set( 'showjumplinks', true ); // showjumplinks preference has been removed
 337                 $tpl->set( 'username', $this->loggedin ? $this->username : null );
 338                 $tpl->set( 'userpage', $this->userpage );
 339                 $tpl->set( 'userpageurl', $this->userpageUrlDetails['href'] );
 340                 $tpl->set( 'userlang', $userLangCode );
 341
 342                 // Users can have their language set differently than the
 343                 // content of the wiki. For these users, tell the web browser
 344                 // that interface elements are in a different language.
 345                 $tpl->set( 'userlangattributes', '' );
 346                 $tpl->set( 'specialpageattributes', '' ); # obsolete
 347                 // Used by VectorBeta to insert HTML before content but after the
 348                 // heading for the page title. Defaults to empty string.
 349                 $tpl->set( 'prebodyhtml', '' );
 350
 351                 $contLang = MediaWikiServices::getInstance()->getContentLanguage();
 352                 if (
 353                         $userLangCode !== $contLang->getHtmlCode() ||
 354                         $userLangDir !== $contLang->getDir()
 355                 ) {
 356                         $escUserlang = htmlspecialchars( $userLangCode );
 357                         $escUserdir = htmlspecialchars( $userLangDir );
 358                         // Attributes must be in double quotes because htmlspecialchars() doesn't
 359                         // escape single quotes
 360                         $attrs = " lang=\"$escUserlang\" dir=\"$escUserdir\"";
 361                         $tpl->set( 'userlangattributes', $attrs );
 362                 }
 363
 364                 $tpl->set( 'newtalk', $this->getNewtalks() );
 365                 $tpl->set( 'logo', $this->logoText() );
 366
 367                 $tpl->set( 'copyright', false );
 368                 // No longer used
 369                 $tpl->set( 'viewcount', false );
 370                 $tpl->set( 'lastmod', false );
 371                 $tpl->set( 'credits', false );
 372                 $tpl->set( 'numberofwatchingusers', false );
 373                 if ( $title->exists() ) {
 374                         if ( $out->isArticle() && $this->isRevisionCurrent() ) {
 375                                 if ( $wgMaxCredits != 0 ) {
 376                                         /** @var CreditsAction $action */
 377                                         $action = Action::factory(
 378                                                 'credits', $this->getWikiPage(), $this->getContext() );
 379                                         $tpl->set( 'credits',
 380                                                 $action->getCredits( $wgMaxCredits, $wgShowCreditsIfMax ) );
 381                                 } else {
 382                                         $tpl->set( 'lastmod', $this->lastModified() );
 383                                 }
 384                         }
 385                         if ( $out->showsCopyright() ) {
 386                                 $tpl->set( 'copyright', $this->getCopyright() );
 387                         }
 388                 }
 389
 390                 $tpl->set( 'copyrightico', $this->getCopyrightIcon() );
 391                 $tpl->set( 'poweredbyico', $this->getPoweredBy() );
 392                 $tpl->set( 'disclaimer', $this->disclaimerLink() );
 393                 $tpl->set( 'privacy', $this->privacyLink() );
 394                 $tpl->set( 'about', $this->aboutLink() );
 395
 396                 $tpl->set( 'footerlinks', [
 397                         'info' => [
 398                                 'lastmod',
 399                                 'numberofwatchingusers',
 400                                 'credits',
 401                                 'copyright',
 402                         ],
 403                         'places' => [
 404                                 'privacy',
 405                                 'about',
 406                                 'disclaimer',
 407                         ],
 408                 ] );
 409
 410                 global $wgFooterIcons;
 411                 $tpl->set( 'footericons', $wgFooterIcons );
 412                 foreach ( $tpl->data['footericons'] as $footerIconsKey => &$footerIconsBlock ) {
 413                         if ( count( $footerIconsBlock ) > 0 ) {
 414                                 foreach ( $footerIconsBlock as &$footerIcon ) {
 415                                         if ( isset( $footerIcon['src'] ) ) {
 416                                                 if ( !isset( $footerIcon['width'] ) ) {
 417                                                         $footerIcon['width'] = 88;
 418                                                 }
 419                                                 if ( !isset( $footerIcon['height'] ) ) {
 420                                                         $footerIcon['height'] = 31;
 421                                                 }
 422                                         }
 423                                 }
 424                         } else {
 425                                 unset( $tpl->data['footericons'][$footerIconsKey] );
 426                         }
 427                 }
 428
 429                 $tpl->set( 'indicators', $out->getIndicators() );
 430
 431                 $tpl->set( 'sitenotice', $this->getSiteNotice() );
 432                 $tpl->set( 'printfooter', $this->printSource() );
 433                 // Wrap the bodyText with #mw-content-text element
 434                 $out->mBodytext = $this->wrapHTML( $title, $out->mBodytext );
 435                 $tpl->set( 'bodytext', $out->mBodytext );
 436
 437                 $language_urls = $this->getLanguages();
 438                 if ( count( $language_urls ) ) {
 439                         $tpl->set( 'language_urls', $language_urls );
 440                 } else {
 441                         $tpl->set( 'language_urls', false );
 442                 }
 443
 444                 # Personal toolbar
 445                 $tpl->set( 'personal_urls', $this->buildPersonalUrls() );
 446                 $content_navigation = $this->buildContentNavigationUrls();
 447                 $content_actions = $this->buildContentActionUrls( $content_navigation );
 448                 $tpl->set( 'content_navigation', $content_navigation );
 449                 $tpl->set( 'content_actions', $content_actions );
 450
 451                 $tpl->set( 'sidebar', $this->buildSidebar() );
 452                 $tpl->set( 'nav_urls', $this->buildNavUrls() );
 453
 454                 // Do this last in case hooks above add bottom scripts
 455                 $tpl->set( 'bottomscripts', $this->bottomScripts() );
 456
 457                 // Set the head scripts near the end, in case the above actions resulted in added scripts
 458                 $tpl->set( 'headelement', $out->headElement( $this ) );
 459
 460                 $tpl->set( 'debug', '' );
 461                 $tpl->set( 'debughtml', $this->generateDebugHTML() );
 462                 $tpl->set( 'reporttime', wfReportTime( $out->getCSPNonce() ) );
 463
 464                 // Avoid PHP 7.1 warning of passing $this by reference
 465                 $skinTemplate = $this;
 466                 // original version by hansm
 467                 if ( !Hooks::run( 'SkinTemplateOutputPageBeforeExec', [ &$skinTemplate, &$tpl ] ) ) {
 468                         wfDebug( __METHOD__ . ": Hook SkinTemplateOutputPageBeforeExec broke outputPage execution!\n" );
 469                 }
 470
 471                 // Set the bodytext to another key so that skins can just output it on its own
 472                 // and output printfooter and debughtml separately
 473                 $tpl->set( 'bodycontent', $tpl->data['bodytext'] );
 474
 475                 // Append printfooter and debughtml onto bodytext so that skins that
 476                 // were already using bodytext before they were split out don't suddenly
 477                 // start not outputting information.
 478                 $tpl->data['bodytext'] .= Html::rawElement(
 479                         'div',
 480                         [ 'class' => 'printfooter' ],
 481                         "\n{$tpl->data['printfooter']}"
 482                 ) . "\n";
 483                 $tpl->data['bodytext'] .= $tpl->data['debughtml'];
 484
 485                 // allow extensions adding stuff after the page content.
 486                 // See Skin::afterContentHook() for further documentation.
 487                 $tpl->set( 'dataAfterContent', $this->afterContentHook() );
 488
 489                 return $tpl;
 490         }
 491
 492         /**
 493          * Get the HTML for the p-personal list
 494          * @return string
 495          */
 496         public function getPersonalToolsList() {
 497                 return $this->makePersonalToolsList();
 498         }
 499
 500         /**
 501          * Get the HTML for the personal tools list
 502          *
 503          * @since 1.31
 504          *
 505          * @param array|null $personalTools
 506          * @param array $options
 507          * @return string
 508          */
 509         public function makePersonalToolsList( $personalTools = null, $options = [] ) {
 510                 $tpl = $this->setupTemplateForOutput();
 511                 $tpl->set( 'personal_urls', $this->buildPersonalUrls() );
 512                 $html = '';
 513
 514                 if ( $personalTools === null ) {
 515                         $personalTools = ( $tpl instanceof BaseTemplate )
 516                                 ? $tpl->getPersonalTools()
 517                                 : [];
 518                 }
 519
 520                 foreach ( $personalTools as $key => $item ) {
 521                         $html .= $tpl->makeListItem( $key, $item, $options );
 522                 }
 523
 524                 return $html;
 525         }
 526
 527         /**
 528          * Get personal tools for the user
 529          *
 530          * @since 1.31
 531          *
 532          * @return array Array of personal tools
 533          */
 534         public function getStructuredPersonalTools() {
 535                 $tpl = $this->setupTemplateForOutput();
 536                 $tpl->set( 'personal_urls', $this->buildPersonalUrls() );
 537
 538                 return ( $tpl instanceof BaseTemplate ) ? $tpl->getPersonalTools() : [];
 539         }
 540
 541         /**
 542          * Format language name for use in sidebar interlanguage links list.
 543          * By default it is capitalized.
 544          *
 545          * @param string $name Language name, e.g. "English" or "español"
 546          * @return string
 547          * @private
 548          */
 549         function formatLanguageName( $name ) {
 550                 return $this->getLanguage()->ucfirst( $name );
 551         }
 552
 553         /**
 554          * Output the string, or print error message if it's
 555          * an error object of the appropriate type.
 556          * For the base class, assume strings all around.
 557          *
 558          * @param string $str
 559          * @private
 560          */
 561         function printOrError( $str ) {
 562                 echo $str;
 563         }
 564
 565         /**
 566          * Output a boolean indicating if buildPersonalUrls should output separate
 567          * login and create account links or output a combined link
 568          * By default we simply return a global config setting that affects most skins
 569          * This is setup as a method so that like with $wgLogo and getLogo() a skin
 570          * can override this setting and always output one or the other if it has
 571          * a reason it can't output one of the two modes.
 572          * @return bool
 573          */
 574         function useCombinedLoginLink() {
 575                 global $wgUseCombinedLoginLink;
 576                 return $wgUseCombinedLoginLink;
 577         }
 578
 579         /**
 580          * build array of urls for personal toolbar
 581          * @return array
 582          */
 583         protected function buildPersonalUrls() {
 584                 $title = $this->getTitle();
 585                 $request = $this->getRequest();
 586                 $pageurl = $title->getLocalURL();
 587                 $authManager = AuthManager::singleton();
 588
 589                 /* set up the default links for the personal toolbar */
 590                 $personal_urls = [];
 591
 592                 # Due to T34276, if a user does not have read permissions,
 593                 # $this->getTitle() will just give Special:Badtitle, which is
 594                 # not especially useful as a returnto parameter. Use the title
 595                 # from the request instead, if there was one.
 596                 if ( $this->getUser()->isAllowed( 'read' ) ) {
 597                         $page = $this->getTitle();
 598                 } else {
 599                         $page = Title::newFromText( $request->getVal( 'title', '' ) );
 600                 }
 601                 $page = $request->getVal( 'returnto', $page );
 602                 $returnto = [];
 603                 if ( strval( $page ) !== '' ) {
 604                         $returnto['returnto'] = $page;
 605                         $query = $request->getVal( 'returntoquery', $this->thisquery );
 606                         $paramsArray = wfCgiToArray( $query );
 607                         $query = wfArrayToCgi( $paramsArray );
 608                         if ( $query != '' ) {
 609                                 $returnto['returntoquery'] = $query;
 610                         }
 611                 }
 612
 613                 if ( $this->loggedin ) {
 614                         $personal_urls['userpage'] = [
 615                                 'text' => $this->username,
 616                                 'href' => &$this->userpageUrlDetails['href'],
 617                                 'class' => $this->userpageUrlDetails['exists'] ? false : 'new',
 618                                 'exists' => $this->userpageUrlDetails['exists'],
 619                                 'active' => ( $this->userpageUrlDetails['href'] == $pageurl ),
 620                                 'dir' => 'auto'
 621                         ];
 622                         $usertalkUrlDetails = $this->makeTalkUrlDetails( $this->userpage );
 623                         $personal_urls['mytalk'] = [
 624                                 'text' => $this->msg( 'mytalk' )->text(),
 625                                 'href' => &$usertalkUrlDetails['href'],
 626                                 'class' => $usertalkUrlDetails['exists'] ? false : 'new',
 627                                 'exists' => $usertalkUrlDetails['exists'],
 628                                 'active' => ( $usertalkUrlDetails['href'] == $pageurl )
 629                         ];
 630                         $href = self::makeSpecialUrl( 'Preferences' );
 631                         $personal_urls['preferences'] = [
 632                                 'text' => $this->msg( 'mypreferences' )->text(),
 633                                 'href' => $href,
 634                                 'active' => ( $href == $pageurl )
 635                         ];
 636
 637                         if ( $this->getUser()->isAllowed( 'viewmywatchlist' ) ) {
 638                                 $href = self::makeSpecialUrl( 'Watchlist' );
 639                                 $personal_urls['watchlist'] = [
 640                                         'text' => $this->msg( 'mywatchlist' )->text(),
 641                                         'href' => $href,
 642                                         'active' => ( $href == $pageurl )
 643                                 ];
 644                         }
 645
 646                         # We need to do an explicit check for Special:Contributions, as we
 647                         # have to match both the title, and the target, which could come
 648                         # from request values (Special:Contributions?target=Jimbo_Wales)
 649                         # or be specified in "sub page" form
 650                         # (Special:Contributions/Jimbo_Wales). The plot
 651                         # thickens, because the Title object is altered for special pages,
 652                         # so it doesn't contain the original alias-with-subpage.
 653                         $origTitle = Title::newFromText( $request->getText( 'title' ) );
 654                         if ( $origTitle instanceof Title && $origTitle->isSpecialPage() ) {
 655                                 list( $spName, $spPar ) =
 656                                         MediaWikiServices::getInstance()->getSpecialPageFactory()->
 657                                                 resolveAlias( $origTitle->getText() );
 658                                 $active = $spName == 'Contributions'
 659                                         && ( ( $spPar && $spPar == $this->username )
 660                                                 || $request->getText( 'target' ) == $this->username );
 661                         } else {
 662                                 $active = false;
 663                         }
 664
 665                         $href = self::makeSpecialUrlSubpage( 'Contributions', $this->username );
 666                         $personal_urls['mycontris'] = [
 667                                 'text' => $this->msg( 'mycontris' )->text(),
 668                                 'href' => $href,
 669                                 'active' => $active
 670                         ];
 671
 672                         // if we can't set the user, we can't unset it either
 673                         if ( $request->getSession()->canSetUser() ) {
 674                                 $personal_urls['logout'] = [
 675                                         'text' => $this->msg( 'pt-userlogout' )->text(),
 676                                         'href' => self::makeSpecialUrl( 'Userlogout',
 677                                                 // Note: userlogout link must always contain an & character, otherwise we might not be able
 678                                                 // to detect a buggy precaching proxy (T19790)
 679                                                 ( $title->isSpecial( 'Preferences' ) ? [] : $returnto ) ),
 680                                         'active' => false
 681                                 ];
 682                         }
 683                 } else {
 684                         $useCombinedLoginLink = $this->useCombinedLoginLink();
 685                         if ( !$authManager->canCreateAccounts() || !$authManager->canAuthenticateNow() ) {
 686                                 // don't show combined login/signup link if one of those is actually not available
 687                                 $useCombinedLoginLink = false;
 688                         }
 689
 690                         $loginlink = $this->getUser()->isAllowed( 'createaccount' ) && $useCombinedLoginLink
 691                                 ? 'nav-login-createaccount'
 692                                 : 'pt-login';
 693
 694                         $login_url = [
 695                                 'text' => $this->msg( $loginlink )->text(),
 696                                 'href' => self::makeSpecialUrl( 'Userlogin', $returnto ),
 697                                 'active' => $title->isSpecial( 'Userlogin' )
 698                                         || $title->isSpecial( 'CreateAccount' ) && $useCombinedLoginLink,
 699                         ];
 700                         $createaccount_url = [
 701                                 'text' => $this->msg( 'pt-createaccount' )->text(),
 702                                 'href' => self::makeSpecialUrl( 'CreateAccount', $returnto ),
 703                                 'active' => $title->isSpecial( 'CreateAccount' ),
 704                         ];
 705
 706                         // No need to show Talk and Contributions to anons if they can't contribute!
 707                         if ( User::groupHasPermission( '*', 'edit' ) ) {
 708                                 // Because of caching, we can't link directly to the IP talk and
 709                                 // contributions pages. Instead we use the special page shortcuts
 710                                 // (which work correctly regardless of caching). This means we can't
 711                                 // determine whether these links are active or not, but since major
 712                                 // skins (MonoBook, Vector) don't use this information, it's not a
 713                                 // huge loss.
 714                                 $personal_urls['anontalk'] = [
 715                                         'text' => $this->msg( 'anontalk' )->text(),
 716                                         'href' => self::makeSpecialUrlSubpage( 'Mytalk', false ),
 717                                         'active' => false
 718                                 ];
 719                                 $personal_urls['anoncontribs'] = [
 720                                         'text' => $this->msg( 'anoncontribs' )->text(),
 721                                         'href' => self::makeSpecialUrlSubpage( 'Mycontributions', false ),
 722                                         'active' => false
 723                                 ];
 724                         }
 725
 726                         if (
 727                                 $authManager->canCreateAccounts()
 728                                 && $this->getUser()->isAllowed( 'createaccount' )
 729                                 && !$useCombinedLoginLink
 730                         ) {
 731                                 $personal_urls['createaccount'] = $createaccount_url;
 732                         }
 733
 734                         if ( $authManager->canAuthenticateNow() ) {
 735                                 $key = User::groupHasPermission( '*', 'read' )
 736                                         ? 'login'
 737                                         : 'login-private';
 738                                 $personal_urls[$key] = $login_url;
 739                         }
 740                 }
 741
 742                 Hooks::runWithoutAbort( 'PersonalUrls', [ &$personal_urls, &$title, $this ] );
 743                 return $personal_urls;
 744         }
 745
 746         /**
 747          * Builds an array with tab definition
 748          *
 749          * @param Title $title Page Where the tab links to
 750          * @param string|array $message Message key or an array of message keys (will fall back)
 751          * @param bool $selected Display the tab as selected
 752          * @param string $query Query string attached to tab URL
 753          * @param bool $checkEdit Check if $title exists and mark with .new if one doesn't
 754          *
 755          * @return array
 756          */
 757         function tabAction( $title, $message, $selected, $query = '', $checkEdit = false ) {
 758                 $classes = [];
 759                 if ( $selected ) {
 760                         $classes[] = 'selected';
 761                 }
 762                 $exists = true;
 763                 if ( $checkEdit && !$title->isKnown() ) {
 764                         $classes[] = 'new';
 765                         $exists = false;
 766                         if ( $query !== '' ) {
 767                                 $query = 'action=edit&redlink=1&' . $query;
 768                         } else {
 769                                 $query = 'action=edit&redlink=1';
 770                         }
 771                 }
 772
 773                 $services = MediaWikiServices::getInstance();
 774                 $linkClass = $services->getLinkRenderer()->getLinkClasses( $title );
 775
 776                 // wfMessageFallback will nicely accept $message as an array of fallbacks
 777                 // or just a single key
 778                 $msg = wfMessageFallback( $message )->setContext( $this->getContext() );
 779                 if ( is_array( $message ) ) {
 780                         // for hook compatibility just keep the last message name
 781                         $message = end( $message );
 782                 }
 783                 if ( $msg->exists() ) {
 784                         $text = $msg->text();
 785                 } else {
 786                         $text = $services->getContentLanguage()->getConverter()->
 787                                 convertNamespace( $services->getNamespaceInfo()->
 788                                         getSubject( $title->getNamespace() ) );
 789                 }
 790
 791                 // Avoid PHP 7.1 warning of passing $this by reference
 792                 $skinTemplate = $this;
 793                 $result = [];
 794                 if ( !Hooks::run( 'SkinTemplateTabAction', [ &$skinTemplate,
 795                                 $title, $message, $selected, $checkEdit,
 796                                 &$classes, &$query, &$text, &$result ] ) ) {
 797                         return $result;
 798                 }
 799
 800                 $result = [
 801                         'class' => implode( ' ', $classes ),
 802                         'text' => $text,
 803                         'href' => $title->getLocalURL( $query ),
 804                         'exists' => $exists,
 805                         'primary' => true ];
 806                 if ( $linkClass !== '' ) {
 807                         $result['link-class'] = $linkClass;
 808                 }
 809
 810                 return $result;
 811         }
 812
 813         function makeTalkUrlDetails( $name, $urlaction = '' ) {
 814                 $title = Title::newFromText( $name );
 815                 if ( !is_object( $title ) ) {
 816                         throw new MWException( __METHOD__ . " given invalid pagename $name" );
 817                 }
 818                 $title = $title->getTalkPage();
 819                 self::checkTitle( $title, $name );
 820                 return [
 821                         'href' => $title->getLocalURL( $urlaction ),
 822                         'exists' => $title->isKnown(),
 823                 ];
 824         }
 825
 826         /**
 827          * @todo is this even used?
 828          * @param string $name
 829          * @param string $urlaction
 830          * @return array
 831          */
 832         function makeArticleUrlDetails( $name, $urlaction = '' ) {
 833                 $title = Title::newFromText( $name );
 834                 $title = $title->getSubjectPage();
 835                 self::checkTitle( $title, $name );
 836                 return [
 837                         'href' => $title->getLocalURL( $urlaction ),
 838                         'exists' => $title->exists(),
 839                 ];
 840         }
 841
 842         /**
 843          * a structured array of links usually used for the tabs in a skin
 844          *
 845          * There are 4 standard sections
 846          * namespaces: Used for namespace tabs like special, page, and talk namespaces
 847          * views: Used for primary page views like read, edit, history
 848          * actions: Used for most extra page actions like deletion, protection, etc...
 849          * variants: Used to list the language variants for the page
 850          *
 851          * Each section's value is a key/value array of links for that section.
 852          * The links themselves have these common keys:
 853          * - class: The css classes to apply to the tab
 854          * - text: The text to display on the tab
 855          * - href: The href for the tab to point to
 856          * - rel: An optional rel= for the tab's link
 857          * - redundant: If true the tab will be dropped in skins using content_actions
 858          *   this is useful for tabs like "Read" which only have meaning in skins that
 859          *   take special meaning from the grouped structure of content_navigation
 860          *
 861          * Views also have an extra key which can be used:
 862          * - primary: If this is not true skins like vector may try to hide the tab
 863          *            when the user has limited space in their browser window
 864          *
 865          * content_navigation using code also expects these ids to be present on the
 866          * links, however these are usually automatically generated by SkinTemplate
 867          * itself and are not necessary when using a hook. The only things these may
 868          * matter to are people modifying content_navigation after it's initial creation:
 869          * - id: A "preferred" id, most skins are best off outputting this preferred
 870          *   id for best compatibility.
 871          * - tooltiponly: This is set to true for some tabs in cases where the system
 872          *   believes that the accesskey should not be added to the tab.
 873          *
 874          * @return array
 875          */
 876         protected function buildContentNavigationUrls() {
 877                 global $wgDisableLangConversion;
 878
 879                 // Display tabs for the relevant title rather than always the title itself
 880                 $title = $this->getRelevantTitle();
 881                 $onPage = $title->equals( $this->getTitle() );
 882
 883                 $out = $this->getOutput();
 884                 $request = $this->getRequest();
 885                 $user = $this->getUser();
 886
 887                 $content_navigation = [
 888                         'namespaces' => [],
 889                         'views' => [],
 890                         'actions' => [],
 891                         'variants' => []
 892                 ];
 893
 894                 // parameters
 895                 $action = $request->getVal( 'action', 'view' );
 896
 897                 $userCanRead = $title->quickUserCan( 'read', $user );
 898
 899                 // Avoid PHP 7.1 warning of passing $this by reference
 900                 $skinTemplate = $this;
 901                 $preventActiveTabs = false;
 902                 Hooks::run( 'SkinTemplatePreventOtherActiveTabs', [ &$skinTemplate, &$preventActiveTabs ] );
 903
 904                 // Checks if page is some kind of content
 905                 if ( $title->canExist() ) {
 906                         // Gets page objects for the related namespaces
 907                         $subjectPage = $title->getSubjectPage();
 908                         $talkPage = $title->getTalkPage();
 909
 910                         // Determines if this is a talk page
 911                         $isTalk = $title->isTalkPage();
 912
 913                         // Generates XML IDs from namespace names
 914                         $subjectId = $title->getNamespaceKey( '' );
 915
 916                         if ( $subjectId == 'main' ) {
 917                                 $talkId = 'talk';
 918                         } else {
 919                                 $talkId = "{$subjectId}_talk";
 920                         }
 921
 922                         $skname = $this->skinname;
 923
 924                         // Adds namespace links
 925                         $subjectMsg = [ "nstab-$subjectId" ];
 926                         if ( $subjectPage->isMainPage() ) {
 927                                 array_unshift( $subjectMsg, 'mainpage-nstab' );
 928                         }
 929                         $content_navigation['namespaces'][$subjectId] = $this->tabAction(
 930                                 $subjectPage, $subjectMsg, !$isTalk && !$preventActiveTabs, '', $userCanRead
 931                         );
 932                         $content_navigation['namespaces'][$subjectId]['context'] = 'subject';
 933                         $content_navigation['namespaces'][$talkId] = $this->tabAction(
 934                                 $talkPage, [ "nstab-$talkId", 'talk' ], $isTalk && !$preventActiveTabs, '', $userCanRead
 935                         );
 936                         $content_navigation['namespaces'][$talkId]['context'] = 'talk';
 937
 938                         if ( $userCanRead ) {
 939                                 // Adds "view" view link
 940                                 if ( $title->isKnown() ) {
 941                                         $content_navigation['views']['view'] = $this->tabAction(
 942                                                 $isTalk ? $talkPage : $subjectPage,
 943                                                 [ "$skname-view-view", 'view' ],
 944                                                 ( $onPage && ( $action == 'view' || $action == 'purge' ) ), '', true
 945                                         );
 946                                         // signal to hide this from simple content_actions
 947                                         $content_navigation['views']['view']['redundant'] = true;
 948                                 }
 949
 950                                 $page = $this->canUseWikiPage() ? $this->getWikiPage() : false;
 951                                 $isRemoteContent = $page && !$page->isLocal();
 952
 953                                 // If it is a non-local file, show a link to the file in its own repository
 954                                 // @todo abstract this for remote content that isn't a file
 955                                 if ( $isRemoteContent ) {
 956                                         $content_navigation['views']['view-foreign'] = [
 957                                                 'class' => '',
 958                                                 'text' => wfMessageFallback( "$skname-view-foreign", 'view-foreign' )->
 959                                                         setContext( $this->getContext() )->
 960                                                         params( $page->getWikiDisplayName() )->text(),
 961                                                 'href' => $page->getSourceURL(),
 962                                                 'primary' => false,
 963                                         ];
 964                                 }
 965
 966                                 // Checks if user can edit the current page if it exists or create it otherwise
 967                                 if ( $title->quickUserCan( 'edit', $user )
 968                                         && ( $title->exists() || $title->quickUserCan( 'create', $user ) )
 969                                 ) {
 970                                         // Builds CSS class for talk page links
 971                                         $isTalkClass = $isTalk ? ' istalk' : '';
 972                                         // Whether the user is editing the page
 973                                         $isEditing = $onPage && ( $action == 'edit' || $action == 'submit' );
 974                                         // Whether to show the "Add a new section" tab
 975                                         // Checks if this is a current rev of talk page and is not forced to be hidden
 976                                         $showNewSection = !$out->forceHideNewSectionLink()
 977                                                 && ( ( $isTalk && $this->isRevisionCurrent() ) || $out->showNewSectionLink() );
 978                                         $section = $request->getVal( 'section' );
 979
 980                                         if ( $title->exists()
 981                                                 || ( $title->getNamespace() == NS_MEDIAWIKI
 982                                                         && $title->getDefaultMessageText() !== false
 983                                                 )
 984                                         ) {
 985                                                 $msgKey = $isRemoteContent ? 'edit-local' : 'edit';
 986                                         } else {
 987                                                 $msgKey = $isRemoteContent ? 'create-local' : 'create';
 988                                         }
 989                                         $content_navigation['views']['edit'] = [
 990                                                 'class' => ( $isEditing && ( $section !== 'new' || !$showNewSection )
 991                                                         ? 'selected'
 992                                                         : ''
 993                                                 ) . $isTalkClass,
 994                                                 'text' => wfMessageFallback( "$skname-view-$msgKey", $msgKey )
 995                                                         ->setContext( $this->getContext() )->text(),
 996                                                 'href' => $title->getLocalURL( $this->editUrlOptions() ),
 997                                                 'primary' => !$isRemoteContent, // don't collapse this in vector
 998                                         ];
 999
1000                                         // section link
1001                                         if ( $showNewSection ) {
1002                                                 // Adds new section link
1003                                                 // $content_navigation['actions']['addsection']
1004                                                 $content_navigation['views']['addsection'] = [
1005                                                         'class' => ( $isEditing && $section == 'new' ) ? 'selected' : false,
1006                                                         'text' => wfMessageFallback( "$skname-action-addsection", 'addsection' )
1007                                                                 ->setContext( $this->getContext() )->text(),
1008                                                         'href' => $title->getLocalURL( 'action=edit&section=new' )
1009                                                 ];
1010                                         }
1011                                 // Checks if the page has some kind of viewable source content
1012                                 } elseif ( $title->hasSourceText() ) {
1013                                         // Adds view source view link
1014                                         $content_navigation['views']['viewsource'] = [
1015                                                 'class' => ( $onPage && $action == 'edit' ) ? 'selected' : false,
1016                                                 'text' => wfMessageFallback( "$skname-action-viewsource", 'viewsource' )
1017                                                         ->setContext( $this->getContext() )->text(),
1018                                                 'href' => $title->getLocalURL( $this->editUrlOptions() ),
1019                                                 'primary' => true, // don't collapse this in vector
1020                                         ];
1021                                 }
1022
1023                                 // Checks if the page exists
1024                                 if ( $title->exists() ) {
1025                                         // Adds history view link
1026                                         $content_navigation['views']['history'] = [
1027                                                 'class' => ( $onPage && $action == 'history' ) ? 'selected' : false,
1028                                                 'text' => wfMessageFallback( "$skname-view-history", 'history_short' )
1029                                                         ->setContext( $this->getContext() )->text(),
1030                                                 'href' => $title->getLocalURL( 'action=history' ),
1031                                         ];
1032
1033                                         if ( $title->quickUserCan( 'delete', $user ) ) {
1034                                                 $content_navigation['actions']['delete'] = [
1035                                                         'class' => ( $onPage && $action == 'delete' ) ? 'selected' : false,
1036                                                         'text' => wfMessageFallback( "$skname-action-delete", 'delete' )
1037                                                                 ->setContext( $this->getContext() )->text(),
1038                                                         'href' => $title->getLocalURL( 'action=delete' )
1039                                                 ];
1040                                         }
1041
1042                                         if ( $title->quickUserCan( 'move', $user ) ) {
1043                                                 $moveTitle = SpecialPage::getTitleFor( 'Movepage', $title->getPrefixedDBkey() );
1044                                                 $content_navigation['actions']['move'] = [
1045                                                         'class' => $this->getTitle()->isSpecial( 'Movepage' ) ? 'selected' : false,
1046                                                         'text' => wfMessageFallback( "$skname-action-move", 'move' )
1047                                                                 ->setContext( $this->getContext() )->text(),
1048                                                         'href' => $moveTitle->getLocalURL()
1049                                                 ];
1050                                         }
1051                                 } else {
1052                                         // article doesn't exist or is deleted
1053                                         if ( $title->quickUserCan( 'deletedhistory', $user ) ) {
1054                                                 $n = $title->isDeleted();
1055                                                 if ( $n ) {
1056                                                         $undelTitle = SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedDBkey() );
1057                                                         // If the user can't undelete but can view deleted
1058                                                         // history show them a "View .. deleted" tab instead.
1059                                                         $msgKey = $title->quickUserCan( 'undelete', $user ) ? 'undelete' : 'viewdeleted';
1060                                                         $content_navigation['actions']['undelete'] = [
1061                                                                 'class' => $this->getTitle()->isSpecial( 'Undelete' ) ? 'selected' : false,
1062                                                                 'text' => wfMessageFallback( "$skname-action-$msgKey", "{$msgKey}_short" )
1063                                                                         ->setContext( $this->getContext() )->numParams( $n )->text(),
1064                                                                 'href' => $undelTitle->getLocalURL()
1065                                                         ];
1066                                                 }
1067                                         }
1068                                 }
1069
1070                                 if ( $title->quickUserCan( 'protect', $user ) && $title->getRestrictionTypes() &&
1071                                         MediaWikiServices::getInstance()->getNamespaceInfo()->
1072                                                 getRestrictionLevels( $title->getNamespace(), $user ) !== [ '' ]
1073                                 ) {
1074                                         $mode = $title->isProtected() ? 'unprotect' : 'protect';
1075                                         $content_navigation['actions'][$mode] = [
1076                                                 'class' => ( $onPage && $action == $mode ) ? 'selected' : false,
1077                                                 'text' => wfMessageFallback( "$skname-action-$mode", $mode )
1078                                                         ->setContext( $this->getContext() )->text(),
1079                                                 'href' => $title->getLocalURL( "action=$mode" )
1080                                         ];
1081                                 }
1082
1083                                 // Checks if the user is logged in
1084                                 if ( $this->loggedin && $user->isAllowedAll( 'viewmywatchlist', 'editmywatchlist' ) ) {
1085                                         /**
1086                                          * The following actions use messages which, if made particular to
1087                                          * the any specific skins, would break the Ajax code which makes this
1088                                          * action happen entirely inline. OutputPage::getJSVars
1089                                          * defines a set of messages in a javascript object - and these
1090                                          * messages are assumed to be global for all skins. Without making
1091                                          * a change to that procedure these messages will have to remain as
1092                                          * the global versions.
1093                                          */
1094                                         $mode = $user->isWatched( $title ) ? 'unwatch' : 'watch';
1095                                         $content_navigation['actions'][$mode] = [
1096                                                 'class' => 'mw-watchlink ' . (
1097                                                         $onPage && ( $action == 'watch' || $action == 'unwatch' ) ? 'selected' : ''
1098                                                 ),
1099                                                 // uses 'watch' or 'unwatch' message
1100                                                 'text' => $this->msg( $mode )->text(),
1101                                                 'href' => $title->getLocalURL( [ 'action' => $mode ] ),
1102                                                 // Set a data-mw=interface attribute, which the mediawiki.page.ajax
1103                                                 // module will look for to make sure it's a trusted link
1104                                                 'data' => [
1105                                                         'mw' => 'interface',
1106                                                 ],
1107                                         ];
1108                                 }
1109                         }
1110
1111                         // Avoid PHP 7.1 warning of passing $this by reference
1112                         $skinTemplate = $this;
1113                         Hooks::runWithoutAbort(
1114                                 'SkinTemplateNavigation',
1115                                 [ &$skinTemplate, &$content_navigation ]
1116                         );
1117
1118                         if ( $userCanRead && !$wgDisableLangConversion ) {
1119                                 $pageLang = $title->getPageLanguage();
1120                                 // Checks that language conversion is enabled and variants exist
1121                                 // And if it is not in the special namespace
1122                                 if ( $pageLang->hasVariants() ) {
1123                                         // Gets list of language variants
1124                                         $variants = $pageLang->getVariants();
1125                                         // Gets preferred variant (note that user preference is
1126                                         // only possible for wiki content language variant)
1127                                         $preferred = $pageLang->getPreferredVariant();
1128                                         if ( Action::getActionName( $this ) === 'view' ) {
1129                                                 $params = $request->getQueryValues();
1130                                                 unset( $params['title'] );
1131                                         } else {
1132                                                 $params = [];
1133                                         }
1134                                         // Loops over each variant
1135                                         foreach ( $variants as $code ) {
1136                                                 // Gets variant name from language code
1137                                                 $varname = $pageLang->getVariantname( $code );
1138                                                 // Appends variant link
1139                                                 $content_navigation['variants'][] = [
1140                                                         'class' => ( $code == $preferred ) ? 'selected' : false,
1141                                                         'text' => $varname,
1142                                                         'href' => $title->getLocalURL( [ 'variant' => $code ] + $params ),
1143                                                         'lang' => LanguageCode::bcp47( $code ),
1144                                                         'hreflang' => LanguageCode::bcp47( $code ),
1145                                                 ];
1146                                         }
1147                                 }
1148                         }
1149                 } else {
1150                         // If it's not content, it's got to be a special page
1151                         $content_navigation['namespaces']['special'] = [
1152                                 'class' => 'selected',
1153                                 'text' => $this->msg( 'nstab-special' )->text(),
1154                                 'href' => $request->getRequestURL(), // @see: T4457, T4510
1155                                 'context' => 'subject'
1156                         ];
1157
1158                         // Avoid PHP 7.1 warning of passing $this by reference
1159                         $skinTemplate = $this;
1160                         Hooks::runWithoutAbort( 'SkinTemplateNavigation::SpecialPage',
1161                                 [ &$skinTemplate, &$content_navigation ] );
1162                 }
1163
1164                 // Avoid PHP 7.1 warning of passing $this by reference
1165                 $skinTemplate = $this;
1166                 // Equiv to SkinTemplateContentActions
1167                 Hooks::runWithoutAbort( 'SkinTemplateNavigation::Universal',
1168                         [ &$skinTemplate, &$content_navigation ] );
1169
1170                 // Setup xml ids and tooltip info
1171                 foreach ( $content_navigation as $section => &$links ) {
1172                         foreach ( $links as $key => &$link ) {
1173                                 $xmlID = $key;
1174                                 if ( isset( $link['context'] ) && $link['context'] == 'subject' ) {
1175                                         $xmlID = 'ca-nstab-' . $xmlID;
1176                                 } elseif ( isset( $link['context'] ) && $link['context'] == 'talk' ) {
1177                                         $xmlID = 'ca-talk';
1178                                         $link['rel'] = 'discussion';
1179                                 } elseif ( $section == 'variants' ) {
1180                                         $xmlID = 'ca-varlang-' . $xmlID;
1181                                 } else {
1182                                         $xmlID = 'ca-' . $xmlID;
1183                                 }
1184                                 $link['id'] = $xmlID;
1185                         }
1186                 }
1187
1188                 # We don't want to give the watch tab an accesskey if the
1189                 # page is being edited, because that conflicts with the
1190                 # accesskey on the watch checkbox.  We also don't want to
1191                 # give the edit tab an accesskey, because that's fairly
1192                 # superfluous and conflicts with an accesskey (Ctrl-E) often
1193                 # used for editing in Safari.
1194                 if ( in_array( $action, [ 'edit', 'submit' ] ) ) {
1195                         if ( isset( $content_navigation['views']['edit'] ) ) {
1196                                 $content_navigation['views']['edit']['tooltiponly'] = true;
1197                         }
1198                         if ( isset( $content_navigation['actions']['watch'] ) ) {
1199                                 $content_navigation['actions']['watch']['tooltiponly'] = true;
1200                         }
1201                         if ( isset( $content_navigation['actions']['unwatch'] ) ) {
1202                                 $content_navigation['actions']['unwatch']['tooltiponly'] = true;
1203                         }
1204                 }
1205
1206                 return $content_navigation;
1207         }
1208
1209         /**
1210          * an array of edit links by default used for the tabs
1211          * @param array $content_navigation
1212          * @return array
1213          */
1214         private function buildContentActionUrls( $content_navigation ) {
1215                 // content_actions has been replaced with content_navigation for backwards
1216                 // compatibility and also for skins that just want simple tabs content_actions
1217                 // is now built by flattening the content_navigation arrays into one
1218
1219                 $content_actions = [];
1220
1221                 foreach ( $content_navigation as $links ) {
1222                         foreach ( $links as $key => $value ) {
1223                                 if ( isset( $value['redundant'] ) && $value['redundant'] ) {
1224                                         // Redundant tabs are dropped from content_actions
1225                                         continue;
1226                                 }
1227
1228                                 // content_actions used to have ids built using the "ca-$key" pattern
1229                                 // so the xmlID based id is much closer to the actual $key that we want
1230                                 // for that reason we'll just strip out the ca- if present and use
1231                                 // the latter potion of the "id" as the $key
1232                                 if ( isset( $value['id'] ) && substr( $value['id'], 0, 3 ) == 'ca-' ) {
1233                                         $key = substr( $value['id'], 3 );
1234                                 }
1235
1236                                 if ( isset( $content_actions[$key] ) ) {
1237                                         wfDebug( __METHOD__ . ": Found a duplicate key for $key while flattening " .
1238                                                 "content_navigation into content_actions.\n" );
1239                                         continue;
1240                                 }
1241
1242                                 $content_actions[$key] = $value;
1243                         }
1244                 }
1245
1246                 return $content_actions;
1247         }
1248
1249         /**
1250          * build array of common navigation links
1251          * @return array
1252          */
1253         protected function buildNavUrls() {
1254                 global $wgUploadNavigationUrl;
1255
1256                 $out = $this->getOutput();
1257                 $request = $this->getRequest();
1258
1259                 $nav_urls = [];
1260                 $nav_urls['mainpage'] = [ 'href' => self::makeMainPageUrl() ];
1261                 if ( $wgUploadNavigationUrl ) {
1262                         $nav_urls['upload'] = [ 'href' => $wgUploadNavigationUrl ];
1263                 } elseif ( UploadBase::isEnabled() && UploadBase::isAllowed( $this->getUser() ) === true ) {
1264                         $nav_urls['upload'] = [ 'href' => self::makeSpecialUrl( 'Upload' ) ];
1265                 } else {
1266                         $nav_urls['upload'] = false;
1267                 }
1268                 $nav_urls['specialpages'] = [ 'href' => self::makeSpecialUrl( 'Specialpages' ) ];
1269
1270                 $nav_urls['print'] = false;
1271                 $nav_urls['permalink'] = false;
1272                 $nav_urls['info'] = false;
1273                 $nav_urls['whatlinkshere'] = false;
1274                 $nav_urls['recentchangeslinked'] = false;
1275                 $nav_urls['contributions'] = false;
1276                 $nav_urls['log'] = false;
1277                 $nav_urls['blockip'] = false;
1278                 $nav_urls['mute'] = false;
1279                 $nav_urls['emailuser'] = false;
1280                 $nav_urls['userrights'] = false;
1281
1282                 // A print stylesheet is attached to all pages, but nobody ever
1283                 // figures that out. :)  Add a link...
1284                 if ( !$out->isPrintable() && ( $out->isArticle() || $this->getTitle()->isSpecialPage() ) ) {
1285                         $nav_urls['print'] = [
1286                                 'text' => $this->msg( 'printableversion' )->text(),
1287                                 'href' => $this->getTitle()->getLocalURL(
1288                                         $request->appendQueryValue( 'printable', 'yes' ) )
1289                         ];
1290                 }
1291
1292                 if ( $out->isArticle() ) {
1293                         // Also add a "permalink" while we're at it
1294                         $revid = $this->getRevisionId();
1295                         if ( $revid ) {
1296                                 $nav_urls['permalink'] = [
1297                                         'text' => $this->msg( 'permalink' )->text(),
1298                                         'href' => $this->getTitle()->getLocalURL( "oldid=$revid" )
1299                                 ];
1300                         }
1301
1302                         // Avoid PHP 7.1 warning of passing $this by reference
1303                         $skinTemplate = $this;
1304                         // Use the copy of revision ID in case this undocumented, shady hook tries to mess with internals
1305                         Hooks::run( 'SkinTemplateBuildNavUrlsNav_urlsAfterPermalink',
1306                                 [ &$skinTemplate, &$nav_urls, &$revid, &$revid ] );
1307                 }
1308
1309                 if ( $out->isArticleRelated() ) {
1310                         $nav_urls['whatlinkshere'] = [
1311                                 'href' => SpecialPage::getTitleFor( 'Whatlinkshere', $this->thispage )->getLocalURL()
1312                         ];
1313
1314                         $nav_urls['info'] = [
1315                                 'text' => $this->msg( 'pageinfo-toolboxlink' )->text(),
1316                                 'href' => $this->getTitle()->getLocalURL( "action=info" )
1317                         ];
1318
1319                         if ( $this->getTitle()->exists() || $this->getTitle()->inNamespace( NS_CATEGORY ) ) {
1320                                 $nav_urls['recentchangeslinked'] = [
1321                                         'href' => SpecialPage::getTitleFor( 'Recentchangeslinked', $this->thispage )->getLocalURL()
1322                                 ];
1323                         }
1324                 }
1325
1326                 $user = $this->getRelevantUser();
1327                 if ( $user ) {
1328                         $rootUser = $user->getName();
1329
1330                         $nav_urls['contributions'] = [
1331                                 'text' => $this->msg( 'contributions', $rootUser )->text(),
1332                                 'href' => self::makeSpecialUrlSubpage( 'Contributions', $rootUser ),
1333                                 'tooltip-params' => [ $rootUser ],
1334                         ];
1335
1336                         $nav_urls['log'] = [
1337                                 'href' => self::makeSpecialUrlSubpage( 'Log', $rootUser )
1338                         ];
1339
1340                         if ( $this->getUser()->isAllowed( 'block' ) ) {
1341                                 $nav_urls['blockip'] = [
1342                                         'text' => $this->msg( 'blockip', $rootUser )->text(),
1343                                         'href' => self::makeSpecialUrlSubpage( 'Block', $rootUser )
1344                                 ];
1345                         }
1346
1347                         if ( $this->showEmailUser( $user ) ) {
1348                                 $nav_urls['emailuser'] = [
1349                                         'text' => $this->msg( 'tool-link-emailuser', $rootUser )->text(),
1350                                         'href' => self::makeSpecialUrlSubpage( 'Emailuser', $rootUser ),
1351                                         'tooltip-params' => [ $rootUser ],
1352                                 ];
1353                         }
1354
1355                         if ( !$user->isAnon() ) {
1356                                 if ( $this->getUser()->isRegistered() && $this->getConfig()->get( 'EnableSpecialMute' ) ) {
1357                                         $nav_urls['mute'] = [
1358                                                 'text' => $this->msg( 'mute-preferences' )->text(),
1359                                                 'href' => self::makeSpecialUrlSubpage( 'Mute', $rootUser )
1360                                         ];
1361                                 }
1362
1363                                 $sur = new UserrightsPage;
1364                                 $sur->setContext( $this->getContext() );
1365                                 $canChange = $sur->userCanChangeRights( $user );
1366                                 $nav_urls['userrights'] = [
1367                                         'text' => $this->msg(
1368                                                 $canChange ? 'tool-link-userrights' : 'tool-link-userrights-readonly',
1369                                                 $rootUser
1370                                         )->text(),
1371                                         'href' => self::makeSpecialUrlSubpage( 'Userrights', $rootUser )
1372                                 ];
1373                         }
1374                 }
1375
1376                 return $nav_urls;
1377         }
1378
1379         /**
1380          * Generate strings used for xml 'id' names
1381          * @return string
1382          */
1383         protected function getNameSpaceKey() {
1384                 return $this->getTitle()->getNamespaceKey();
1385         }
1386 }