includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30         protected $mRelevantTitle = null;
  31         protected $mRelevantUser = null;
  32
  33         /** Constructor, call parent constructor */
  34         function __construct() {
  35                 parent::__construct();
  36         }
  37
  38         /**
  39          * Fetch the set of available skins.
  40          * @return array of strings
  41          */
  42         static function getSkinNames() {
  43                 global $wgValidSkinNames;
  44                 static $skinsInitialised = false;
  45
  46                 if ( !$skinsInitialised || !count( $wgValidSkinNames ) ) {
  47                         # Get a list of available skins
  48                         # Build using the regular expression '^(.*).php$'
  49                         # Array keys are all lower case, array value keep the case used by filename
  50                         #
  51                         wfProfileIn( __METHOD__ . '-init' );
  52
  53                         global $wgStyleDirectory;
  54
  55                         $skinDir = dir( $wgStyleDirectory );
  56
  57                         # while code from www.php.net
  58                         while ( false !== ( $file = $skinDir->read() ) ) {
  59                                 // Skip non-PHP files, hidden files, and '.dep' includes
  60                                 $matches = array();
  61
  62                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  63                                         $aSkin = $matches[1];
  64                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  65                                 }
  66                         }
  67                         $skinDir->close();
  68                         $skinsInitialised = true;
  69                         wfProfileOut( __METHOD__ . '-init' );
  70                 }
  71                 return $wgValidSkinNames;
  72         }
  73
  74         /**
  75          * Fetch the list of usable skins in regards to $wgSkipSkins.
  76          * Useful for Special:Preferences and other places where you
  77          * only want to show skins users _can_ use.
  78          * @return array of strings
  79          */
  80         public static function getUsableSkins() {
  81                 global $wgSkipSkins;
  82
  83                 $usableSkins = self::getSkinNames();
  84
  85                 foreach ( $wgSkipSkins as $skip ) {
  86                         unset( $usableSkins[$skip] );
  87                 }
  88
  89                 return $usableSkins;
  90         }
  91
  92         /**
  93          * Normalize a skin preference value to a form that can be loaded.
  94          * If a skin can't be found, it will fall back to the configured
  95          * default (or the old 'Classic' skin if that's broken).
  96          * @param $key String: 'monobook', 'standard', etc.
  97          * @return string
  98          */
  99         static function normalizeKey( $key ) {
 100                 global $wgDefaultSkin;
 101
 102                 $skinNames = Skin::getSkinNames();
 103
 104                 if ( $key == '' ) {
 105                         // Don't return the default immediately;
 106                         // in a misconfiguration we need to fall back.
 107                         $key = $wgDefaultSkin;
 108                 }
 109
 110                 if ( isset( $skinNames[$key] ) ) {
 111                         return $key;
 112                 }
 113
 114                 // Older versions of the software used a numeric setting
 115                 // in the user preferences.
 116                 $fallback = array(
 117                         0 => $wgDefaultSkin,
 118                         1 => 'nostalgia',
 119                         2 => 'cologneblue'
 120                 );
 121
 122                 if ( isset( $fallback[$key] ) ) {
 123                         $key = $fallback[$key];
 124                 }
 125
 126                 if ( isset( $skinNames[$key] ) ) {
 127                         return $key;
 128                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 129                         return $wgDefaultSkin;
 130                 } else {
 131                         return 'vector';
 132                 }
 133         }
 134
 135         /**
 136          * Factory method for loading a skin of a given type
 137          * @param $key String: 'monobook', 'standard', etc.
 138          * @return Skin
 139          */
 140         static function &newFromKey( $key ) {
 141                 global $wgStyleDirectory;
 142
 143                 $key = Skin::normalizeKey( $key );
 144
 145                 $skinNames = Skin::getSkinNames();
 146                 $skinName = $skinNames[$key];
 147                 $className = "Skin{$skinName}";
 148
 149                 # Grab the skin class and initialise it.
 150                 if ( !class_exists( $className ) ) {
 151                         // Preload base classes to work around APC/PHP5 bug
 152                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 153
 154                         if ( file_exists( $deps ) ) {
 155                                 include_once( $deps );
 156                         }
 157                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 158
 159                         # Check if we got if not failback to default skin
 160                         if ( !class_exists( $className ) ) {
 161                                 # DO NOT die if the class isn't found. This breaks maintenance
 162                                 # scripts and can cause a user account to be unrecoverable
 163                                 # except by SQL manipulation if a previously valid skin name
 164                                 # is no longer valid.
 165                                 wfDebug( "Skin class does not exist: $className\n" );
 166                                 $className = 'SkinVector';
 167                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 168                         }
 169                 }
 170                 $skin = new $className;
 171                 return $skin;
 172         }
 173
 174         /** @return string path to the skin stylesheet */
 175         function getStylesheet() {
 176                 return 'common/wikistandard.css';
 177         }
 178
 179         /** @return string skin name */
 180         public function getSkinName() {
 181                 return $this->skinname;
 182         }
 183
 184         function qbSetting() {
 185                 global $wgOut, $wgUser;
 186
 187                 if ( $wgOut->isQuickbarSuppressed() ) {
 188                         return 0;
 189                 }
 190
 191                 $q = $wgUser->getOption( 'quickbar', 0 );
 192
 193                 return $q;
 194         }
 195
 196         function initPage( OutputPage $out ) {
 197                 global $wgFavicon, $wgAppleTouchIcon, $wgEnableAPI;
 198
 199                 wfProfileIn( __METHOD__ );
 200
 201                 # Generally the order of the favicon and apple-touch-icon links
 202                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 203                 # uses whichever one appears later in the HTML source. Make sure
 204                 # apple-touch-icon is specified first to avoid this.
 205                 if ( false !== $wgAppleTouchIcon ) {
 206                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 207                 }
 208
 209                 if ( false !== $wgFavicon ) {
 210                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 211                 }
 212
 213                 # OpenSearch description link
 214                 $out->addLink( array(
 215                         'rel' => 'search',
 216                         'type' => 'application/opensearchdescription+xml',
 217                         'href' => wfScript( 'opensearch_desc' ),
 218                         'title' => wfMsgForContent( 'opensearch-desc' ),
 219                 ) );
 220
 221                 if ( $wgEnableAPI ) {
 222                         # Real Simple Discovery link, provides auto-discovery information
 223                         # for the MediaWiki API (and potentially additional custom API
 224                         # support such as WordPress or Twitter-compatible APIs for a
 225                         # blogging extension, etc)
 226                         $out->addLink( array(
 227                                 'rel' => 'EditURI',
 228                                 'type' => 'application/rsd+xml',
 229                                 'href' => wfExpandUrl( wfAppendQuery( wfScript( 'api' ), array( 'action' => 'rsd' ) ) ),
 230                         ) );
 231                 }
 232
 233                 $this->addMetadataLinks( $out );
 234
 235                 $this->mRevisionId = $out->mRevisionId;
 236
 237                 $this->preloadExistence();
 238
 239                 wfProfileOut( __METHOD__ );
 240         }
 241
 242         /**
 243          * Preload the existence of three commonly-requested pages in a single query
 244          */
 245         function preloadExistence() {
 246                 global $wgUser;
 247
 248                 // User/talk link
 249                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 250
 251                 // Other tab link
 252                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 253                         // nothing
 254                 } elseif ( $this->mTitle->isTalkPage() ) {
 255                         $titles[] = $this->mTitle->getSubjectPage();
 256                 } else {
 257                         $titles[] = $this->mTitle->getTalkPage();
 258                 }
 259
 260                 $lb = new LinkBatch( $titles );
 261                 $lb->setCaller( __METHOD__ );
 262                 $lb->execute();
 263         }
 264
 265         /**
 266          * Adds metadata links below to the HTML output.
 267          * <ol>
 268          *  <li>Creative Commons
 269          *   <br />See http://wiki.creativecommons.org/Extend_Metadata.
 270          *  </li>
 271          *  <li>Dublin Core</li>
 272          *  <li>Use hreflang to specify canonical and alternate links
 273          *   <br />See http://www.google.com/support/webmasters/bin/answer.py?answer=189077
 274          *  </li>
 275          *  <li>Copyright</li>
 276          * <ol>
 277          *
 278          * @param $out Object: instance of OutputPage
 279          */
 280         function addMetadataLinks( OutputPage $out ) {
 281                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 282                 global $wgDisableLangConversion, $wgCanonicalLanguageLinks, $wgContLang;
 283                 global $wgRightsPage, $wgRightsUrl;
 284
 285                 if ( $out->isArticleRelated() ) {
 286                         # note: buggy CC software only reads first "meta" link
 287                         if ( $wgEnableCreativeCommonsRdf ) {
 288                                 $out->addMetadataLink( array(
 289                                         'title' => 'Creative Commons',
 290                                         'type' => 'application/rdf+xml',
 291                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 292                                 );
 293                         }
 294
 295                         if ( $wgEnableDublinCoreRdf ) {
 296                                 $out->addMetadataLink( array(
 297                                         'title' => 'Dublin Core',
 298                                         'type' => 'application/rdf+xml',
 299                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 300                                 );
 301                         }
 302                 }
 303
 304                 if ( !$wgDisableLangConversion && $wgCanonicalLanguageLinks
 305                         && $wgContLang->hasVariants() ) {
 306
 307                         $urlvar = $wgContLang->getURLVariant();
 308
 309                         if ( !$urlvar ) {
 310                                 $variants = $wgContLang->getVariants();
 311                                 foreach ( $variants as $_v ) {
 312                                         $out->addLink( array(
 313                                                 'rel' => 'alternate',
 314                                                 'hreflang' => $_v,
 315                                                 'href' => $this->mTitle->getLocalURL( '', $_v ) )
 316                                         );
 317                                 }
 318                         } else {
 319                                 $out->addLink( array(
 320                                         'rel' => 'canonical',
 321                                         'href' => $this->mTitle->getFullURL() )
 322                                 );
 323                         }
 324                 }
 325
 326                 $copyright = '';
 327                 if ( $wgRightsPage ) {
 328                         $copy = Title::newFromText( $wgRightsPage );
 329
 330                         if ( $copy ) {
 331                                 $copyright = $copy->getLocalURL();
 332                         }
 333                 }
 334
 335                 if ( !$copyright && $wgRightsUrl ) {
 336                         $copyright = $wgRightsUrl;
 337                 }
 338
 339                 if ( $copyright ) {
 340                         $out->addLink( array(
 341                                 'rel' => 'copyright',
 342                                 'href' => $copyright )
 343                         );
 344                 }
 345         }
 346
 347         /**
 348          * Set some local variables
 349          */
 350         protected function setMembers() {
 351                 global $wgUser;
 352                 $this->mUser = $wgUser;
 353                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 354                 $this->usercss = false;
 355         }
 356
 357         /**
 358          * Whether the revision displayed is the latest revision of the page
 359          *
 360          * @return Boolean
 361          */
 362         public function isRevisionCurrent() {
 363                 return $this->mRevisionId == 0 || $this->mRevisionId == $this->mTitle->getLatestRevID();
 364         }
 365
 366         /**
 367          * Set the title
 368          * @param $t Title object to use
 369          */
 370         public function setTitle( $t ) {
 371                 $this->mTitle = $t;
 372         }
 373
 374         /** Get the title */
 375         public function getTitle() {
 376                 return $this->mTitle;
 377         }
 378
 379         /**
 380          * Set the "relevant" title
 381          * @see self::getRelevantTitle()
 382          * @param $t Title object to use
 383          */
 384         public function setRelevantTitle( $t ) {
 385                 $this->mRelevantTitle = $t;
 386         }
 387
 388         /**
 389          * Return the "relevant" title.
 390          * A "relevant" title is not necessarily the actual title of the page.
 391          * Special pages like Special:MovePage use set the page they are acting on
 392          * as their "relevant" title, this allows the skin system to display things
 393          * such as content tabs which belong to to that page instead of displaying
 394          * a basic special page tab which has almost no meaning.
 395          */
 396         public function getRelevantTitle() {
 397                 if ( isset($this->mRelevantTitle) ) {
 398                         return $this->mRelevantTitle;
 399                 }
 400                 return $this->mTitle;
 401         }
 402
 403         /**
 404          * Set the "relevant" user
 405          * @see self::getRelevantUser()
 406          * @param $u User object to use
 407          */
 408         public function setRelevantUser( $u ) {
 409                 $this->mRelevantUser = $u;
 410         }
 411
 412         /**
 413          * Return the "relevant" user.
 414          * A "relevant" user is similar to a relevant title. Special pages like
 415          * Special:Contributions mark the user which they are relevant to so that
 416          * things like the toolbox can display the information they usually are only
 417          * able to display on a user's userpage and talkpage.
 418          */
 419         public function getRelevantUser() {
 420                 if ( isset($this->mRelevantUser) ) {
 421                         return $this->mRelevantUser;
 422                 }
 423                 $title = $this->getRelevantTitle();
 424                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 425                         $rootUser = strtok( $title->getText(), '/' );
 426                         if ( User::isIP( $rootUser ) ) {
 427                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 428                         } else {
 429                                 $user = User::newFromName( $rootUser );
 430                                 if ( $user->isLoggedIn() ) {
 431                                         $this->mRelevantUser = $user;
 432                                 }
 433                         }
 434                         return $this->mRelevantUser;
 435                 }
 436                 return null;
 437         }
 438
 439         /**
 440          * Outputs the HTML generated by other functions.
 441          * @param $out Object: instance of OutputPage
 442          */
 443         function outputPage( OutputPage $out ) {
 444                 global $wgDebugComments;
 445                 wfProfileIn( __METHOD__ );
 446
 447                 $this->setMembers();
 448                 $this->initPage( $out );
 449
 450                 // See self::afterContentHook() for documentation
 451                 $afterContent = $this->afterContentHook();
 452
 453                 $out->out( $out->headElement( $this ) );
 454
 455                 if ( $wgDebugComments ) {
 456                         $out->out( "<!-- Debug output:\n" .
 457                           $out->mDebugtext . "-->\n" );
 458                 }
 459
 460                 $out->out( $this->beforeContent() );
 461
 462                 $out->out( $out->mBodytext . "\n" );
 463
 464                 $out->out( $this->afterContent() );
 465
 466                 $out->out( $afterContent );
 467
 468                 $out->out( $this->bottomScripts( $out ) );
 469
 470                 $out->out( wfReportTime() );
 471
 472                 $out->out( "\n</body></html>" );
 473                 wfProfileOut( __METHOD__ );
 474         }
 475
 476         static function makeVariablesScript( $data ) {
 477                 if ( $data ) {
 478                         return Html::inlineScript(
 479                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 480                         );
 481                 } else {
 482                         return '';
 483                 }
 484         }
 485
 486         /**
 487          * Make a <script> tag containing global variables
 488          * @param $skinName string Name of the skin
 489          * The odd calling convention is for backwards compatibility
 490          * @todo FIXME: Make this not depend on $wgTitle!
 491          *
 492          * Do not add things here which can be evaluated in ResourceLoaderStartupScript - in other words, without state.
 493          * You will only be adding bloat to the page and causing page caches to have to be purged on configuration changes.
 494          */
 495         static function makeGlobalVariablesScript( $skinName ) {
 496                 global $wgTitle, $wgUser, $wgRequest, $wgOut, $wgUseAjax, $wgEnableMWSuggest;
 497
 498                 $ns = $wgTitle->getNamespace();
 499                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 500                 $vars = array(
 501                         'wgCanonicalNamespace' => $nsname,
 502                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 503                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 504                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 505                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 506                         'wgTitle' => $wgTitle->getText(),
 507                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 508                         'wgArticleId' => $wgTitle->getArticleId(),
 509                         'wgIsArticle' => $wgOut->isArticle(),
 510                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 511                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 512                         'wgCurRevisionId' => $wgTitle->getLatestRevID(),
 513                         'wgCategories' => $wgOut->getCategories(),
 514                         'wgBreakFrames' => $wgOut->getFrameOptions() == 'DENY',
 515                 );
 516                 foreach ( $wgTitle->getRestrictionTypes() as $type ) {
 517                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 518                 }
 519                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 520                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 521                 }
 522
 523                 // Allow extensions to add their custom variables to the global JS variables
 524                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 525
 526                 return self::makeVariablesScript( $vars );
 527         }
 528
 529         /**
 530          * To make it harder for someone to slip a user a fake
 531          * user-JavaScript or user-CSS preview, a random token
 532          * is associated with the login session. If it's not
 533          * passed back with the preview request, we won't render
 534          * the code.
 535          *
 536          * @param $action String: 'edit', 'submit' etc.
 537          * @return bool
 538          */
 539         public function userCanPreview( $action ) {
 540                 global $wgRequest, $wgUser;
 541
 542                 if ( $action != 'submit' ) {
 543                         return false;
 544                 }
 545                 if ( !$wgRequest->wasPosted() ) {
 546                         return false;
 547                 }
 548                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 549                         return false;
 550                 }
 551                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 552                         return false;
 553                 }
 554
 555                 return $wgUser->matchEditToken(
 556                         $wgRequest->getVal( 'wpEditToken' ) );
 557         }
 558
 559         /**
 560          * Generated JavaScript action=raw&gen=js
 561          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 562          * nated together.  For some bizarre reason, it does *not* return any
 563          * custom user JS from subpages.  Huh?
 564          *
 565          * There's absolutely no reason to have separate Monobook/Common JSes.
 566          * Any JS that cares can just check the skin variable generated at the
 567          * top.  For now Monobook.js will be maintained, but it should be consi-
 568          * dered deprecated.
 569          *
 570          * @param $skinName String: If set, overrides the skin name
 571          * @return string
 572          */
 573         public function generateUserJs( $skinName = null ) {
 574
 575                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 576
 577                 return '';
 578         }
 579
 580         /**
 581          * Generate user stylesheet for action=raw&gen=css
 582          */
 583         public function generateUserStylesheet() {
 584
 585                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 586
 587                 return '';
 588         }
 589
 590         /**
 591          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 592          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 593          */
 594         protected function reallyGenerateUserStylesheet() {
 595
 596                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 597
 598                 return '';
 599         }
 600
 601         /**
 602          * @private
 603          */
 604         function setupUserCss( OutputPage $out ) {
 605                 global $wgRequest;
 606                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs;
 607
 608                 wfProfileIn( __METHOD__ );
 609
 610                 $this->setupSkinUserCss( $out );
 611                 // Add any extension CSS
 612                 foreach ( $out->getExtStyle() as $url ) {
 613                         $out->addStyle( $url );
 614                 }
 615
 616                 // Per-site custom styles
 617                 if ( $wgUseSiteCss ) {
 618                         $out->addModuleStyles( 'site' );
 619                 }
 620
 621                 // Per-user custom styles
 622                 if ( $wgAllowUserCss ) {
 623                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 624                                 // @FIXME: properly escape the cdata!
 625                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 626                         } else {
 627                                 $out->addModuleStyles( 'user' );
 628                         }
 629                 }
 630
 631                 // Per-user preference styles
 632                 if ( $wgAllowUserCssPrefs ) {
 633                         $out->addModuleStyles( 'user.options' );
 634                 }
 635
 636                 wfProfileOut( __METHOD__ );
 637         }
 638
 639         /**
 640          * Get the query to generate a dynamic stylesheet
 641          *
 642          * @return array
 643          */
 644         public static function getDynamicStylesheetQuery() {
 645                 global $wgSquidMaxage;
 646
 647                 return array(
 648                                 'action' => 'raw',
 649                                 'maxage' => $wgSquidMaxage,
 650                                 'usemsgcache' => 'yes',
 651                                 'ctype' => 'text/css',
 652                                 'smaxage' => $wgSquidMaxage,
 653                         );
 654         }
 655
 656         /**
 657          * Add skin specific stylesheets
 658          * @param $out OutputPage
 659          */
 660         function setupSkinUserCss( OutputPage $out ) {
 661                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 662                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 663                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 664                 $out->addStyle( $this->getStylesheet() );
 665                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 666         }
 667
 668         function getPageClasses( $title ) {
 669                 $numeric = 'ns-' . $title->getNamespace();
 670
 671                 if ( $title->getNamespace() == NS_SPECIAL ) {
 672                         $type = 'ns-special';
 673                 } elseif ( $title->isTalkPage() ) {
 674                         $type = 'ns-talk';
 675                 } else {
 676                         $type = 'ns-subject';
 677                 }
 678
 679                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 680
 681                 return "$numeric $type $name";
 682         }
 683
 684         /**
 685          * This will be called by OutputPage::headElement when it is creating the
 686          * <body> tag, skins can override it if they have a need to add in any
 687          * body attributes or classes of their own.
 688          */
 689         function addToBodyAttributes( $out, &$bodyAttrs ) {
 690                 // does nothing by default
 691         }
 692
 693         /**
 694          * URL to the logo
 695          */
 696         function getLogo() {
 697                 global $wgLogo;
 698                 return $wgLogo;
 699         }
 700
 701         /**
 702          * This will be called immediately after the <body> tag.  Split into
 703          * two functions to make it easier to subclass.
 704          */
 705         function beforeContent() {
 706                 return $this->doBeforeContent();
 707         }
 708
 709         function doBeforeContent() {
 710                 global $wgContLang;
 711                 wfProfileIn( __METHOD__ );
 712
 713                 $s = '';
 714                 $qb = $this->qbSetting();
 715
 716                 $langlinks = $this->otherLanguages();
 717                 if ( $langlinks ) {
 718                         $rows = 2;
 719                         $borderhack = '';
 720                 } else {
 721                         $rows = 1;
 722                         $langlinks = false;
 723                         $borderhack = 'class="top"';
 724                 }
 725
 726                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 727                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 728
 729                 $shove = ( $qb != 0 );
 730                 $left = ( $qb == 1 || $qb == 3 );
 731
 732                 if ( $wgContLang->isRTL() ) {
 733                         $left = !$left;
 734                 }
 735
 736                 if ( !$shove ) {
 737                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 738                                 $this->logoText() . '</td>';
 739                 } elseif ( $left ) {
 740                         $s .= $this->getQuickbarCompensator( $rows );
 741                 }
 742
 743                 $l = $wgContLang->alignStart();
 744                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 745
 746                 $s .= $this->topLinks();
 747                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 748
 749                 $r = $wgContLang->alignEnd();
 750                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 751                 $s .= $this->nameAndLogin();
 752                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 753
 754                 if ( $langlinks ) {
 755                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 756                 }
 757
 758                 if ( $shove && !$left ) { # Right
 759                         $s .= $this->getQuickbarCompensator( $rows );
 760                 }
 761
 762                 $s .= "</tr>\n</table>\n</div>\n";
 763                 $s .= "\n<div id='article'>\n";
 764
 765                 $notice = wfGetSiteNotice();
 766
 767                 if ( $notice ) {
 768                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 769                 }
 770                 $s .= $this->pageTitle();
 771                 $s .= $this->pageSubtitle();
 772                 $s .= $this->getCategories();
 773
 774                 wfProfileOut( __METHOD__ );
 775                 return $s;
 776         }
 777
 778         function getCategoryLinks() {
 779                 global $wgOut, $wgUseCategoryBrowser;
 780                 global $wgContLang, $wgUser;
 781
 782                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 783                         return '';
 784                 }
 785
 786                 # Separator
 787                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 788
 789                 // Use Unicode bidi embedding override characters,
 790                 // to make sure links don't smash each other up in ugly ways.
 791                 $dir = $wgContLang->getDir();
 792                 $embed = "<span dir='$dir'>";
 793                 $pop = '</span>';
 794
 795                 $allCats = $wgOut->getCategoryLinks();
 796                 $s = '';
 797                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 798
 799                 if ( !empty( $allCats['normal'] ) ) {
 800                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 801
 802                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 803                         $s .= '<div id="mw-normal-catlinks">' .
 804                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 805                                 . $colon . $t . '</div>';
 806                 }
 807
 808                 # Hidden categories
 809                 if ( isset( $allCats['hidden'] ) ) {
 810                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 811                                 $class = 'mw-hidden-cats-user-shown';
 812                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 813                                 $class = 'mw-hidden-cats-ns-shown';
 814                         } else {
 815                                 $class = 'mw-hidden-cats-hidden';
 816                         }
 817
 818                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 819                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 820                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 821                                 '</div>';
 822                 }
 823
 824                 # optional 'dmoz-like' category browser. Will be shown under the list
 825                 # of categories an article belong to
 826                 if ( $wgUseCategoryBrowser ) {
 827                         $s .= '<br /><hr />';
 828
 829                         # get a big array of the parents tree
 830                         $parenttree = $this->mTitle->getParentCategoryTree();
 831                         # Skin object passed by reference cause it can not be
 832                         # accessed under the method subfunction drawCategoryBrowser
 833                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 834                         # Clean out bogus first entry and sort them
 835                         unset( $tempout[0] );
 836                         asort( $tempout );
 837                         # Output one per line
 838                         $s .= implode( "<br />\n", $tempout );
 839                 }
 840
 841                 return $s;
 842         }
 843
 844         /**
 845          * Render the array as a serie of links.
 846          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 847          * @param &skin Object: skin passed by reference
 848          * @return String separated by &gt;, terminate with "\n"
 849          */
 850         function drawCategoryBrowser( $tree, &$skin ) {
 851                 $return = '';
 852
 853                 foreach ( $tree as $element => $parent ) {
 854                         if ( empty( $parent ) ) {
 855                                 # element start a new list
 856                                 $return .= "\n";
 857                         } else {
 858                                 # grab the others elements
 859                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 860                         }
 861
 862                         # add our current element to the list
 863                         $eltitle = Title::newFromText( $element );
 864                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 865                 }
 866
 867                 return $return;
 868         }
 869
 870         function getCategories() {
 871                 $catlinks = $this->getCategoryLinks();
 872
 873                 $classes = 'catlinks';
 874
 875                 global $wgOut, $wgUser;
 876
 877                 // Check what we're showing
 878                 $allCats = $wgOut->getCategoryLinks();
 879                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 880                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 881
 882                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 883                         $classes .= ' catlinks-allhidden';
 884                 }
 885
 886                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 887         }
 888
 889         function getQuickbarCompensator( $rows = 1 ) {
 890                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 891         }
 892
 893         /**
 894          * This runs a hook to allow extensions placing their stuff after content
 895          * and article metadata (e.g. categories).
 896          * Note: This function has nothing to do with afterContent().
 897          *
 898          * This hook is placed here in order to allow using the same hook for all
 899          * skins, both the SkinTemplate based ones and the older ones, which directly
 900          * use this class to get their data.
 901          *
 902          * The output of this function gets processed in SkinTemplate::outputPage() for
 903          * the SkinTemplate based skins, all other skins should directly echo it.
 904          *
 905          * Returns an empty string by default, if not changed by any hook function.
 906          */
 907         protected function afterContentHook() {
 908                 $data = '';
 909
 910                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 911                         // adding just some spaces shouldn't toggle the output
 912                         // of the whole <div/>, so we use trim() here
 913                         if ( trim( $data ) != '' ) {
 914                                 // Doing this here instead of in the skins to
 915                                 // ensure that the div has the same ID in all
 916                                 // skins
 917                                 $data = "<div id='mw-data-after-content'>\n" .
 918                                         "\t$data\n" .
 919                                         "</div>\n";
 920                         }
 921                 } else {
 922                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 923                 }
 924
 925                 return $data;
 926         }
 927
 928         /**
 929          * Generate debug data HTML for displaying at the bottom of the main content
 930          * area.
 931          * @return String HTML containing debug data, if enabled (otherwise empty).
 932          */
 933         protected function generateDebugHTML() {
 934                 global $wgShowDebug, $wgOut;
 935
 936                 if ( $wgShowDebug ) {
 937                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 938                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 939                                 $listInternals . "</ul>\n";
 940                 }
 941
 942                 return '';
 943         }
 944
 945         private function formatDebugHTML( $debugText ) {
 946                 $lines = explode( "\n", $debugText );
 947                 $curIdent = 0;
 948                 $ret = '<li>';
 949
 950                 foreach ( $lines as $line ) {
 951                         $display = ltrim( $line );
 952                         $ident = strlen( $line ) - strlen( $display );
 953                         $diff = $ident - $curIdent;
 954
 955                         if ( $display == '' ) {
 956                                 $display = "\xc2\xa0";
 957                         }
 958
 959                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 960                                 $ident = $curIdent;
 961                                 $diff = 0;
 962                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 963                         } else {
 964                                 $display = htmlspecialchars( $display );
 965                         }
 966
 967                         if ( $diff < 0 ) {
 968                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 969                         } elseif ( $diff == 0 ) {
 970                                 $ret .= "</li><li>\n";
 971                         } else {
 972                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 973                         }
 974                         $ret .= $display . "\n";
 975
 976                         $curIdent = $ident;
 977                 }
 978
 979                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 980
 981                 return $ret;
 982         }
 983
 984         /**
 985          * This gets called shortly before the </body> tag.
 986          * @return String HTML to be put before </body>
 987          */
 988         function afterContent() {
 989                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 990                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 991         }
 992
 993         /**
 994          * This gets called shortly before the </body> tag.
 995          * @param $out OutputPage object
 996          * @return String HTML-wrapped JS code to be put before </body>
 997          */
 998         function bottomScripts( $out ) {
 999                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
1000                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
1001
1002                 return $bottomScriptText;
1003         }
1004
1005         /** @return string Retrievied from HTML text */
1006         function printSource() {
1007                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
1008                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
1009         }
1010
1011         function printFooter() {
1012                 return "<p>" .  $this->printSource() .
1013                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1014         }
1015
1016         /** overloaded by derived classes */
1017         function doAfterContent() {
1018                 return '</div></div>';
1019         }
1020
1021         function pageTitleLinks() {
1022                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1023
1024                 $oldid = $wgRequest->getVal( 'oldid' );
1025                 $diff = $wgRequest->getVal( 'diff' );
1026                 $action = $wgRequest->getText( 'action' );
1027
1028                 $s[] = $this->printableLink();
1029                 $disclaimer = $this->disclaimerLink(); # may be empty
1030
1031                 if ( $disclaimer ) {
1032                         $s[] = $disclaimer;
1033                 }
1034
1035                 $privacy = $this->privacyLink(); # may be empty too
1036
1037                 if ( $privacy ) {
1038                         $s[] = $privacy;
1039                 }
1040
1041                 if ( $wgOut->isArticleRelated() ) {
1042                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1043                                 $name = $this->mTitle->getDBkey();
1044                                 $image = wfFindFile( $this->mTitle );
1045
1046                                 if ( $image ) {
1047                                         $link = htmlspecialchars( $image->getURL() );
1048                                         $style = $this->getInternalLinkAttributes( $link, $name );
1049                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1050                                 }
1051                         }
1052                 }
1053
1054                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1055                         $s[] .= $this->link(
1056                                         $this->mTitle,
1057                                         wfMsg( 'currentrev' ),
1058                                         array(),
1059                                         array(),
1060                                         array( 'known', 'noclasses' )
1061                         );
1062                 }
1063
1064                 if ( $wgUser->getNewtalk() ) {
1065                         # do not show "You have new messages" text when we are viewing our
1066                         # own talk page
1067                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1068                                 $tl = $this->link(
1069                                         $wgUser->getTalkPage(),
1070                                         wfMsgHtml( 'newmessageslink' ),
1071                                         array(),
1072                                         array( 'redirect' => 'no' ),
1073                                         array( 'known', 'noclasses' )
1074                                 );
1075
1076                                 $dl = $this->link(
1077                                         $wgUser->getTalkPage(),
1078                                         wfMsgHtml( 'newmessagesdifflink' ),
1079                                         array(),
1080                                         array( 'diff' => 'cur' ),
1081                                         array( 'known', 'noclasses' )
1082                                 );
1083                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1084                                 # disable caching
1085                                 $wgOut->setSquidMaxage( 0 );
1086                                 $wgOut->enableClientCache( false );
1087                         }
1088                 }
1089
1090                 $undelete = $this->getUndeleteLink();
1091
1092                 if ( !empty( $undelete ) ) {
1093                         $s[] = $undelete;
1094                 }
1095
1096                 return $wgLang->pipeList( $s );
1097         }
1098
1099         function getUndeleteLink() {
1100                 global $wgUser, $wgLang, $wgRequest;
1101
1102                 $action = $wgRequest->getVal( 'action', 'view' );
1103
1104                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1105                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1106                         $n = $this->mTitle->isDeleted();
1107
1108                         if ( $n ) {
1109                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1110                                         $msg = 'thisisdeleted';
1111                                 } else {
1112                                         $msg = 'viewdeleted';
1113                                 }
1114
1115                                 return wfMsg(
1116                                         $msg,
1117                                         $this->link(
1118                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1119                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1120                                                 array(),
1121                                                 array(),
1122                                                 array( 'known', 'noclasses' )
1123                                         )
1124                                 );
1125                         }
1126                 }
1127
1128                 return '';
1129         }
1130
1131         function printableLink() {
1132                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1133
1134                 $s = array();
1135
1136                 if ( !$wgOut->isPrintable() ) {
1137                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1138                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1139                 }
1140
1141                 if ( $wgOut->isSyndicated() ) {
1142                         foreach ( $wgFeedClasses as $format => $class ) {
1143                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1144                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1145                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1146                         }
1147                 }
1148                 return $wgLang->pipeList( $s );
1149         }
1150
1151         /**
1152          * Gets the h1 element with the page title.
1153          * @return string
1154          */
1155         function pageTitle() {
1156                 global $wgOut;
1157                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1158                 return $s;
1159         }
1160
1161         function pageSubtitle() {
1162                 global $wgOut;
1163
1164                 $sub = $wgOut->getSubtitle();
1165
1166                 if ( $sub == '' ) {
1167                         global $wgExtraSubtitle;
1168                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1169                 }
1170
1171                 $subpages = $this->subPageSubtitle();
1172                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1173                 $s = "<p class='subtitle'>{$sub}</p>\n";
1174
1175                 return $s;
1176         }
1177
1178         function subPageSubtitle() {
1179                 $subpages = '';
1180
1181                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this ) ) ) {
1182                         return $subpages;
1183                 }
1184
1185                 global $wgOut;
1186
1187                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1188                         $ptext = $this->mTitle->getPrefixedText();
1189                         if ( preg_match( '/\//', $ptext ) ) {
1190                                 $links = explode( '/', $ptext );
1191                                 array_pop( $links );
1192                                 $c = 0;
1193                                 $growinglink = '';
1194                                 $display = '';
1195
1196                                 foreach ( $links as $link ) {
1197                                         $growinglink .= $link;
1198                                         $display .= $link;
1199                                         $linkObj = Title::newFromText( $growinglink );
1200
1201                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1202                                                 $getlink = $this->link(
1203                                                         $linkObj,
1204                                                         htmlspecialchars( $display ),
1205                                                         array(),
1206                                                         array(),
1207                                                         array( 'known', 'noclasses' )
1208                                                 );
1209
1210                                                 $c++;
1211
1212                                                 if ( $c > 1 ) {
1213                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1214                                                 } else  {
1215                                                         $subpages .= '&lt; ';
1216                                                 }
1217
1218                                                 $subpages .= $getlink;
1219                                                 $display = '';
1220                                         } else {
1221                                                 $display .= '/';
1222                                         }
1223                                         $growinglink .= '/';
1224                                 }
1225                         }
1226                 }
1227
1228                 return $subpages;
1229         }
1230
1231         /**
1232          * Returns true if the IP should be shown in the header
1233          */
1234         function showIPinHeader() {
1235                 global $wgShowIPinHeader;
1236                 return $wgShowIPinHeader && session_id() != '';
1237         }
1238
1239         function nameAndLogin() {
1240                 global $wgUser, $wgLang, $wgContLang;
1241
1242                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1243
1244                 $ret = '';
1245
1246                 if ( $wgUser->isAnon() ) {
1247                         if ( $this->showIPinHeader() ) {
1248                                 $name = wfGetIP();
1249
1250                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1251                                         $wgLang->getNsText( NS_TALK ) );
1252
1253                                 $ret .= "$name ($talkLink)";
1254                         } else {
1255                                 $ret .= wfMsg( 'notloggedin' );
1256                         }
1257
1258                         $returnTo = $this->mTitle->getPrefixedDBkey();
1259                         $query = array();
1260
1261                         if ( $logoutPage != $returnTo ) {
1262                                 $query['returnto'] = $returnTo;
1263                         }
1264
1265                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1266                                 ? 'nav-login-createaccount'
1267                                 : 'login';
1268                         $ret .= "\n<br />" . $this->link(
1269                                 SpecialPage::getTitleFor( 'Userlogin' ),
1270                                 wfMsg( $loginlink ), array(), $query
1271                         );
1272                 } else {
1273                         $returnTo = $this->mTitle->getPrefixedDBkey();
1274                         $talkLink = $this->link( $wgUser->getTalkPage(),
1275                                 $wgLang->getNsText( NS_TALK ) );
1276
1277                         $ret .= $this->link( $wgUser->getUserPage(),
1278                                 htmlspecialchars( $wgUser->getName() ) );
1279                         $ret .= " ($talkLink)<br />";
1280                         $ret .= $wgLang->pipeList( array(
1281                                 $this->link(
1282                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1283                                         array(), array( 'returnto' => $returnTo )
1284                                 ),
1285                                 $this->specialLink( 'Preferences' ),
1286                         ) );
1287                 }
1288
1289                 $ret = $wgLang->pipeList( array(
1290                         $ret,
1291                         $this->link(
1292                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1293                                 wfMsg( 'help' )
1294                         ),
1295                 ) );
1296
1297                 return $ret;
1298         }
1299
1300         function getSearchLink() {
1301                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1302                 return $searchPage->getLocalURL();
1303         }
1304
1305         function escapeSearchLink() {
1306                 return htmlspecialchars( $this->getSearchLink() );
1307         }
1308
1309         function searchForm() {
1310                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1311
1312                 $search = $wgRequest->getText( 'search' );
1313
1314                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1315                   . $this->escapeSearchLink() . "\">\n"
1316                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1317                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1318                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1319
1320                 if ( $wgUseTwoButtonsSearchForm ) {
1321                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1322                 } else {
1323                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1324                 }
1325
1326                 $s .= '</form>';
1327
1328                 // Ensure unique id's for search boxes made after the first
1329                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1330
1331                 return $s;
1332         }
1333
1334         function topLinks() {
1335                 global $wgOut;
1336
1337                 $s = array(
1338                         $this->mainPageLink(),
1339                         $this->specialLink( 'Recentchanges' )
1340                 );
1341
1342                 if ( $wgOut->isArticleRelated() ) {
1343                         $s[] = $this->editThisPage();
1344                         $s[] = $this->historyLink();
1345                 }
1346
1347                 # Many people don't like this dropdown box
1348                 # $s[] = $this->specialPagesList();
1349
1350                 if ( $this->variantLinks() ) {
1351                         $s[] = $this->variantLinks();
1352                 }
1353
1354                 if ( $this->extensionTabLinks() ) {
1355                         $s[] = $this->extensionTabLinks();
1356                 }
1357
1358                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1359                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1360         }
1361
1362         /**
1363          * Compatibility for extensions adding functionality through tabs.
1364          * Eventually these old skins should be replaced with SkinTemplate-based
1365          * versions, sigh...
1366          * @return string
1367          */
1368         function extensionTabLinks() {
1369                 $tabs = array();
1370                 $out = '';
1371                 $s = array();
1372                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1373                 foreach ( $tabs as $tab ) {
1374                         $s[] = Xml::element( 'a',
1375                                 array( 'href' => $tab['href'] ),
1376                                 $tab['text'] );
1377                 }
1378
1379                 if ( count( $s ) ) {
1380                         global $wgLang;
1381
1382                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1383                         $out .= $wgLang->pipeList( $s );
1384                 }
1385
1386                 return $out;
1387         }
1388
1389         /**
1390          * Language/charset variant links for classic-style skins
1391          * @return string
1392          */
1393         function variantLinks() {
1394                 $s = '';
1395
1396                 /* show links to different language variants */
1397                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1398
1399                 $variants = $wgContLang->getVariants();
1400
1401                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1402                         foreach ( $variants as $code ) {
1403                                 $varname = $wgContLang->getVariantname( $code );
1404
1405                                 if ( $varname == 'disable' ) {
1406                                         continue;
1407                                 }
1408                                 $s = $wgLang->pipeList( array(
1409                                         $s,
1410                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1411                                 ) );
1412                         }
1413                 }
1414
1415                 return $s;
1416         }
1417
1418         function bottomLinks() {
1419                 global $wgOut, $wgUser, $wgUseTrackbacks;
1420                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1421
1422                 $s = '';
1423                 if ( $wgOut->isArticleRelated() ) {
1424                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1425
1426                         if ( $wgUser->isLoggedIn() ) {
1427                                 $element[] = $this->watchThisPage();
1428                         }
1429
1430                         $element[] = $this->talkLink();
1431                         $element[] = $this->historyLink();
1432                         $element[] = $this->whatLinksHere();
1433                         $element[] = $this->watchPageLinksLink();
1434
1435                         if ( $wgUseTrackbacks ) {
1436                                 $element[] = $this->trackbackLink();
1437                         }
1438
1439                         if (
1440                                 $this->mTitle->getNamespace() == NS_USER ||
1441                                 $this->mTitle->getNamespace() == NS_USER_TALK
1442                         ) {
1443                                 $id = User::idFromName( $this->mTitle->getText() );
1444                                 $ip = User::isIP( $this->mTitle->getText() );
1445
1446                                 # Both anons and non-anons have contributions list
1447                                 if ( $id || $ip ) {
1448                                         $element[] = $this->userContribsLink();
1449                                 }
1450
1451                                 if ( $this->showEmailUser( $id ) ) {
1452                                         $element[] = $this->emailUserLink();
1453                                 }
1454                         }
1455
1456                         $s = implode( $element, $sep );
1457
1458                         if ( $this->mTitle->getArticleId() ) {
1459                                 $s .= "\n<br />";
1460
1461                                 // Delete/protect/move links for privileged users
1462                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1463                                         $s .= $this->deleteThisPage();
1464                                 }
1465
1466                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1467                                         $s .= $sep . $this->protectThisPage();
1468                                 }
1469
1470                                 if ( $wgUser->isAllowed( 'move' ) ) {
1471                                         $s .= $sep . $this->moveThisPage();
1472                                 }
1473                         }
1474
1475                         $s .= "<br />\n" . $this->otherLanguages();
1476                 }
1477
1478                 return $s;
1479         }
1480
1481         function pageStats() {
1482                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1483                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1484
1485                 if ( !is_null( $wgRequest->getVal( 'oldid' ) ) || !is_null( $wgRequest->getVal( 'diff' ) ) ) {
1486                         return '';
1487                 }
1488
1489                 if ( !$wgOut->isArticle() || !$this->mTitle->exists() ) {
1490                         return '';
1491                 }
1492
1493                 $s = '';
1494
1495                 if ( !$wgDisableCounters ) {
1496                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1497
1498                         if ( $count ) {
1499                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1500                         }
1501                 }
1502
1503                 if ( $wgMaxCredits != 0 ) {
1504                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1505                 } else {
1506                         $s .= $this->lastModified();
1507                 }
1508
1509                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1510                         $dbr = wfGetDB( DB_SLAVE );
1511                         $res = $dbr->select(
1512                                 'watchlist',
1513                                 array( 'COUNT(*) AS n' ),
1514                                 array(
1515                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1516                                         'wl_namespace' => $this->mTitle->getNamespace()
1517                                 ),
1518                                 __METHOD__
1519                         );
1520                         $x = $dbr->fetchObject( $res );
1521
1522                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1523                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1524                         );
1525                 }
1526
1527                 return $s . ' ' .  $this->getCopyright();
1528         }
1529
1530         function getCopyright( $type = 'detect' ) {
1531                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
1532
1533                 if ( $type == 'detect' ) {
1534                         $diff = $wgRequest->getVal( 'diff' );
1535
1536                         if ( is_null( $diff ) && !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1537                                 $type = 'history';
1538                         } else {
1539                                 $type = 'normal';
1540                         }
1541                 }
1542
1543                 if ( $type == 'history' ) {
1544                         $msg = 'history_copyright';
1545                 } else {
1546                         $msg = 'copyright';
1547                 }
1548
1549                 $out = '';
1550
1551                 if ( $wgRightsPage ) {
1552                         $title = Title::newFromText( $wgRightsPage );
1553                         $link = $this->linkKnown( $title, $wgRightsText );
1554                 } elseif ( $wgRightsUrl ) {
1555                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1556                 } elseif ( $wgRightsText ) {
1557                         $link = $wgRightsText;
1558                 } else {
1559                         # Give up now
1560                         return $out;
1561                 }
1562
1563                 // Allow for site and per-namespace customization of copyright notice.
1564                 $forContent = true;
1565
1566                 wfRunHooks( 'SkinCopyrightFooter', array( $this->mTitle, $type, &$msg, &$link, &$forContent ) );
1567
1568                 if ( $forContent ) {
1569                         $out .= wfMsgForContent( $msg, $link );
1570                 } else {
1571                         $out .= wfMsg( $msg, $link );
1572                 }
1573
1574                 return $out;
1575         }
1576
1577         function getCopyrightIcon() {
1578                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1579
1580                 $out = '';
1581
1582                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1583                         $out = $wgCopyrightIcon;
1584                 } elseif ( $wgRightsIcon ) {
1585                         $icon = htmlspecialchars( $wgRightsIcon );
1586
1587                         if ( $wgRightsUrl ) {
1588                                 $url = htmlspecialchars( $wgRightsUrl );
1589                                 $out .= '<a href="' . $url . '">';
1590                         }
1591
1592                         $text = htmlspecialchars( $wgRightsText );
1593                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1594
1595                         if ( $wgRightsUrl ) {
1596                                 $out .= '</a>';
1597                         }
1598                 }
1599
1600                 return $out;
1601         }
1602
1603         /**
1604          * Gets the powered by MediaWiki icon.
1605          * @return string
1606          */
1607         function getPoweredBy() {
1608                 global $wgStylePath;
1609
1610                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1611                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1612                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
1613                 return $text;
1614         }
1615
1616         function lastModified() {
1617                 global $wgLang, $wgArticle;
1618
1619                 if ( !$this->isRevisionCurrent() ) {
1620                         $timestamp = Revision::getTimestampFromId( $this->mTitle, $this->mRevisionId );
1621                 } else {
1622                         $timestamp = $wgArticle->getTimestamp();
1623                 }
1624
1625                 if ( $timestamp ) {
1626                         $d = $wgLang->date( $timestamp, true );
1627                         $t = $wgLang->time( $timestamp, true );
1628                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1629                 } else {
1630                         $s = '';
1631                 }
1632
1633                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1634                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1635                 }
1636
1637                 return $s;
1638         }
1639
1640         function logoText( $align = '' ) {
1641                 if ( $align != '' ) {
1642                         $a = " align='{$align}'";
1643                 } else {
1644                         $a = '';
1645                 }
1646
1647                 $mp = wfMsg( 'mainpage' );
1648                 $mptitle = Title::newMainPage();
1649                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1650
1651                 $logourl = $this->getLogo();
1652                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1653
1654                 return $s;
1655         }
1656
1657         /**
1658          * Show a drop-down box of special pages
1659          */
1660         function specialPagesList() {
1661                 global $wgContLang, $wgServer, $wgRedirectScript;
1662
1663                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1664
1665                 foreach ( $pages as $name => $page ) {
1666                         $pages[$name] = $page->getDescription();
1667                 }
1668
1669                 $go = wfMsg( 'go' );
1670                 $sp = wfMsg( 'specialpages' );
1671                 $spp = $wgContLang->specialPage( 'Specialpages' );
1672
1673                 $s = '<form id="specialpages" method="get" ' .
1674                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1675                 $s .= "<select name=\"wpDropdown\">\n";
1676                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1677
1678
1679                 foreach ( $pages as $name => $desc ) {
1680                         $p = $wgContLang->specialPage( $name );
1681                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1682                 }
1683
1684                 $s .= "</select>\n";
1685                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1686                 $s .= "</form>\n";
1687
1688                 return $s;
1689         }
1690
1691         /**
1692          * Renders a $wgFooterIcons icon acording to the method's arguments
1693          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1694          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1695          */
1696         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1697                 if ( is_string( $icon ) ) {
1698                         $html = $icon;
1699                 } else { // Assuming array
1700                         $url = $icon["url"];
1701                         unset( $icon["url"] );
1702                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1703                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1704                         } else {
1705                                 $html = htmlspecialchars( $icon["alt"] );
1706                         }
1707                         if ( $url ) {
1708                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1709                         }
1710                 }
1711                 return $html;
1712         }
1713
1714         /**
1715          * Gets the link to the wiki's main page.
1716          * @return string
1717          */
1718         function mainPageLink() {
1719                 $s = $this->link(
1720                         Title::newMainPage(),
1721                         wfMsg( 'mainpage' ),
1722                         array(),
1723                         array(),
1724                         array( 'known', 'noclasses' )
1725                 );
1726
1727                 return $s;
1728         }
1729
1730         public function footerLink( $desc, $page ) {
1731                 // if the link description has been set to "-" in the default language,
1732                 if ( wfMsgForContent( $desc )  == '-' ) {
1733                         // then it is disabled, for all languages.
1734                         return '';
1735                 } else {
1736                         // Otherwise, we display the link for the user, described in their
1737                         // language (which may or may not be the same as the default language),
1738                         // but we make the link target be the one site-wide page.
1739                         $title = Title::newFromText( wfMsgForContent( $page ) );
1740
1741                         return $this->linkKnown(
1742                                 $title,
1743                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1744                         );
1745                 }
1746         }
1747
1748         /**
1749          * Gets the link to the wiki's privacy policy page.
1750          */
1751         function privacyLink() {
1752                 return $this->footerLink( 'privacy', 'privacypage' );
1753         }
1754
1755         /**
1756          * Gets the link to the wiki's about page.
1757          */
1758         function aboutLink() {
1759                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1760         }
1761
1762         /**
1763          * Gets the link to the wiki's general disclaimers page.
1764          */
1765         function disclaimerLink() {
1766                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1767         }
1768
1769         function editThisPage() {
1770                 global $wgOut;
1771
1772                 if ( !$wgOut->isArticleRelated() ) {
1773                         $s = wfMsg( 'protectedpage' );
1774                 } else {
1775                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1776                                 $t = wfMsg( 'editthispage' );
1777                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1778                                 $t = wfMsg( 'create-this-page' );
1779                         } else {
1780                                 $t = wfMsg( 'viewsource' );
1781                         }
1782
1783                         $s = $this->link(
1784                                 $this->mTitle,
1785                                 $t,
1786                                 array(),
1787                                 $this->editUrlOptions(),
1788                                 array( 'known', 'noclasses' )
1789                         );
1790                 }
1791
1792                 return $s;
1793         }
1794
1795         /**
1796          * Return URL options for the 'edit page' link.
1797          * This may include an 'oldid' specifier, if the current page view is such.
1798          *
1799          * @return array
1800          * @private
1801          */
1802         function editUrlOptions() {
1803                 $options = array( 'action' => 'edit' );
1804
1805                 if ( !$this->isRevisionCurrent() ) {
1806                         $options['oldid'] = intval( $this->mRevisionId );
1807                 }
1808
1809                 return $options;
1810         }
1811
1812         function deleteThisPage() {
1813                 global $wgUser, $wgRequest;
1814
1815                 $diff = $wgRequest->getVal( 'diff' );
1816
1817                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1818                         $t = wfMsg( 'deletethispage' );
1819
1820                         $s = $this->link(
1821                                 $this->mTitle,
1822                                 $t,
1823                                 array(),
1824                                 array( 'action' => 'delete' ),
1825                                 array( 'known', 'noclasses' )
1826                         );
1827                 } else {
1828                         $s = '';
1829                 }
1830
1831                 return $s;
1832         }
1833
1834         function protectThisPage() {
1835                 global $wgUser, $wgRequest;
1836
1837                 $diff = $wgRequest->getVal( 'diff' );
1838
1839                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1840                         if ( $this->mTitle->isProtected() ) {
1841                                 $text = wfMsg( 'unprotectthispage' );
1842                                 $query = array( 'action' => 'unprotect' );
1843                         } else {
1844                                 $text = wfMsg( 'protectthispage' );
1845                                 $query = array( 'action' => 'protect' );
1846                         }
1847
1848                         $s = $this->link(
1849                                 $this->mTitle,
1850                                 $text,
1851                                 array(),
1852                                 $query,
1853                                 array( 'known', 'noclasses' )
1854                         );
1855                 } else {
1856                         $s = '';
1857                 }
1858
1859                 return $s;
1860         }
1861
1862         function watchThisPage() {
1863                 global $wgOut;
1864                 ++$this->mWatchLinkNum;
1865
1866                 if ( $wgOut->isArticleRelated() ) {
1867                         if ( $this->mTitle->userIsWatching() ) {
1868                                 $text = wfMsg( 'unwatchthispage' );
1869                                 $query = array( 'action' => 'unwatch' );
1870                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1871                         } else {
1872                                 $text = wfMsg( 'watchthispage' );
1873                                 $query = array( 'action' => 'watch' );
1874                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1875                         }
1876
1877                         $s = $this->link(
1878                                 $this->mTitle,
1879                                 $text,
1880                                 array( 'id' => $id ),
1881                                 $query,
1882                                 array( 'known', 'noclasses' )
1883                         );
1884                 } else {
1885                         $s = wfMsg( 'notanarticle' );
1886                 }
1887
1888                 return $s;
1889         }
1890
1891         function moveThisPage() {
1892                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1893                         return $this->link(
1894                                 SpecialPage::getTitleFor( 'Movepage' ),
1895                                 wfMsg( 'movethispage' ),
1896                                 array(),
1897                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1898                                 array( 'known', 'noclasses' )
1899                         );
1900                 } else {
1901                         // no message if page is protected - would be redundant
1902                         return '';
1903                 }
1904         }
1905
1906         function historyLink() {
1907                 return $this->link(
1908                         $this->mTitle,
1909                         wfMsgHtml( 'history' ),
1910                         array( 'rel' => 'archives' ),
1911                         array( 'action' => 'history' )
1912                 );
1913         }
1914
1915         function whatLinksHere() {
1916                 return $this->link(
1917                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1918                         wfMsgHtml( 'whatlinkshere' ),
1919                         array(),
1920                         array(),
1921                         array( 'known', 'noclasses' )
1922                 );
1923         }
1924
1925         function userContribsLink() {
1926                 return $this->link(
1927                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1928                         wfMsgHtml( 'contributions' ),
1929                         array(),
1930                         array(),
1931                         array( 'known', 'noclasses' )
1932                 );
1933         }
1934
1935         function showEmailUser( $id ) {
1936                 global $wgUser;
1937                 $targetUser = User::newFromId( $id );
1938                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1939                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1940         }
1941
1942         function emailUserLink() {
1943                 return $this->link(
1944                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1945                         wfMsg( 'emailuser' ),
1946                         array(),
1947                         array(),
1948                         array( 'known', 'noclasses' )
1949                 );
1950         }
1951
1952         function watchPageLinksLink() {
1953                 global $wgOut;
1954
1955                 if ( !$wgOut->isArticleRelated() ) {
1956                         return '(' . wfMsg( 'notanarticle' ) . ')';
1957                 } else {
1958                         return $this->link(
1959                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1960                                 wfMsg( 'recentchangeslinked-toolbox' ),
1961                                 array(),
1962                                 array(),
1963                                 array( 'known', 'noclasses' )
1964                         );
1965                 }
1966         }
1967
1968         function trackbackLink() {
1969                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1970                         . wfMsg( 'trackbacklink' ) . '</a>';
1971         }
1972
1973         function otherLanguages() {
1974                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1975
1976                 if ( $wgHideInterlanguageLinks ) {
1977                         return '';
1978                 }
1979
1980                 $a = $wgOut->getLanguageLinks();
1981
1982                 if ( 0 == count( $a ) ) {
1983                         return '';
1984                 }
1985
1986                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1987                 $first = true;
1988
1989                 if ( $wgContLang->isRTL() ) {
1990                         $s .= '<span dir="LTR">';
1991                 }
1992
1993                 foreach ( $a as $l ) {
1994                         if ( !$first ) {
1995                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1996                         }
1997
1998                         $first = false;
1999
2000                         $nt = Title::newFromText( $l );
2001                         $url = $nt->escapeFullURL();
2002                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
2003                         $title = htmlspecialchars( $nt->getText() );
2004
2005                         if ( $text == '' ) {
2006                                 $text = $l;
2007                         }
2008
2009                         $style = $this->getExternalLinkAttributes();
2010                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
2011                 }
2012
2013                 if ( $wgContLang->isRTL() ) {
2014                         $s .= '</span>';
2015                 }
2016
2017                 return $s;
2018         }
2019
2020         function talkLink() {
2021                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
2022                         # No discussion links for special pages
2023                         return '';
2024                 }
2025
2026                 $linkOptions = array();
2027
2028                 if ( $this->mTitle->isTalkPage() ) {
2029                         $link = $this->mTitle->getSubjectPage();
2030                         switch( $link->getNamespace() ) {
2031                                 case NS_MAIN:
2032                                         $text = wfMsg( 'articlepage' );
2033                                         break;
2034                                 case NS_USER:
2035                                         $text = wfMsg( 'userpage' );
2036                                         break;
2037                                 case NS_PROJECT:
2038                                         $text = wfMsg( 'projectpage' );
2039                                         break;
2040                                 case NS_FILE:
2041                                         $text = wfMsg( 'imagepage' );
2042                                         # Make link known if image exists, even if the desc. page doesn't.
2043                                         if ( wfFindFile( $link ) )
2044                                                 $linkOptions[] = 'known';
2045                                         break;
2046                                 case NS_MEDIAWIKI:
2047                                         $text = wfMsg( 'mediawikipage' );
2048                                         break;
2049                                 case NS_TEMPLATE:
2050                                         $text = wfMsg( 'templatepage' );
2051                                         break;
2052                                 case NS_HELP:
2053                                         $text = wfMsg( 'viewhelppage' );
2054                                         break;
2055                                 case NS_CATEGORY:
2056                                         $text = wfMsg( 'categorypage' );
2057                                         break;
2058                                 default:
2059                                         $text = wfMsg( 'articlepage' );
2060                         }
2061                 } else {
2062                         $link = $this->mTitle->getTalkPage();
2063                         $text = wfMsg( 'talkpage' );
2064                 }
2065
2066                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
2067
2068                 return $s;
2069         }
2070
2071         function commentLink() {
2072                 global $wgOut;
2073
2074                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
2075                         return '';
2076                 }
2077
2078                 # __NEWSECTIONLINK___ changes behaviour here
2079                 # If it is present, the link points to this page, otherwise
2080                 # it points to the talk page
2081                 if ( $this->mTitle->isTalkPage() ) {
2082                         $title = $this->mTitle;
2083                 } elseif ( $wgOut->showNewSectionLink() ) {
2084                         $title = $this->mTitle;
2085                 } else {
2086                         $title = $this->mTitle->getTalkPage();
2087                 }
2088
2089                 return $this->link(
2090                         $title,
2091                         wfMsg( 'postcomment' ),
2092                         array(),
2093                         array(
2094                                 'action' => 'edit',
2095                                 'section' => 'new'
2096                         ),
2097                         array( 'known', 'noclasses' )
2098                 );
2099         }
2100
2101         function getUploadLink() {
2102                 global $wgUploadNavigationUrl;
2103
2104                 if ( $wgUploadNavigationUrl ) {
2105                         # Using an empty class attribute to avoid automatic setting of "external" class
2106                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
2107                 } else {
2108                         return $this->link(
2109                                 SpecialPage::getTitleFor( 'Upload' ),
2110                                 wfMsgHtml( 'upload' ),
2111                                 array(),
2112                                 array(),
2113                                 array( 'known', 'noclasses' )
2114                         );
2115                 }
2116         }
2117
2118         /**
2119          * Return a fully resolved style path url to images or styles stored in the common folder.
2120          * This method returns a url resolved using the configured skin style path
2121          * and includes the style version inside of the url.
2122          * @param $name String: The name or path of a skin resource file
2123          * @return String The fully resolved style path url including styleversion
2124          */
2125         function getCommonStylePath( $name ) {
2126                 global $wgStylePath, $wgStyleVersion;
2127                 return "$wgStylePath/common/$name?$wgStyleVersion";
2128         }
2129
2130         /**
2131          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
2132          * This method returns a url resolved using the configured skin style path
2133          * and includes the style version inside of the url.
2134          * @param $name String: The name or path of a skin resource file
2135          * @return String The fully resolved style path url including styleversion
2136          */
2137         function getSkinStylePath( $name ) {
2138                 global $wgStylePath, $wgStyleVersion;
2139                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
2140         }
2141
2142         /* these are used extensively in SkinTemplate, but also some other places */
2143         static function makeMainPageUrl( $urlaction = '' ) {
2144                 $title = Title::newMainPage();
2145                 self::checkTitle( $title, '' );
2146
2147                 return $title->getLocalURL( $urlaction );
2148         }
2149
2150         static function makeSpecialUrl( $name, $urlaction = '' ) {
2151                 $title = SpecialPage::getTitleFor( $name );
2152                 return $title->getLocalURL( $urlaction );
2153         }
2154
2155         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2156                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2157                 return $title->getLocalURL( $urlaction );
2158         }
2159
2160         static function makeI18nUrl( $name, $urlaction = '' ) {
2161                 $title = Title::newFromText( wfMsgForContent( $name ) );
2162                 self::checkTitle( $title, $name );
2163                 return $title->getLocalURL( $urlaction );
2164         }
2165
2166         static function makeUrl( $name, $urlaction = '' ) {
2167                 $title = Title::newFromText( $name );
2168                 self::checkTitle( $title, $name );
2169
2170                 return $title->getLocalURL( $urlaction );
2171         }
2172
2173         /**
2174          * If url string starts with http, consider as external URL, else
2175          * internal
2176          */
2177         static function makeInternalOrExternalUrl( $name ) {
2178                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2179                         return $name;
2180                 } else {
2181                         return self::makeUrl( $name );
2182                 }
2183         }
2184
2185         # this can be passed the NS number as defined in Language.php
2186         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2187                 $title = Title::makeTitleSafe( $namespace, $name );
2188                 self::checkTitle( $title, $name );
2189
2190                 return $title->getLocalURL( $urlaction );
2191         }
2192
2193         /* these return an array with the 'href' and boolean 'exists' */
2194         static function makeUrlDetails( $name, $urlaction = '' ) {
2195                 $title = Title::newFromText( $name );
2196                 self::checkTitle( $title, $name );
2197
2198                 return array(
2199                         'href' => $title->getLocalURL( $urlaction ),
2200                         'exists' => $title->getArticleID() != 0,
2201                 );
2202         }
2203
2204         /**
2205          * Make URL details where the article exists (or at least it's convenient to think so)
2206          */
2207         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2208                 $title = Title::newFromText( $name );
2209                 self::checkTitle( $title, $name );
2210
2211                 return array(
2212                         'href' => $title->getLocalURL( $urlaction ),
2213                         'exists' => true
2214                 );
2215         }
2216
2217         # make sure we have some title to operate on
2218         static function checkTitle( &$title, $name ) {
2219                 if ( !is_object( $title ) ) {
2220                         $title = Title::newFromText( $name );
2221                         if ( !is_object( $title ) ) {
2222                                 $title = Title::newFromText( '--error: link target missing--' );
2223                         }
2224                 }
2225         }
2226
2227         /**
2228          * Build an array that represents the sidebar(s), the navigation bar among them
2229          *
2230          * @return array
2231          */
2232         function buildSidebar() {
2233                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2234                 global $wgLang;
2235                 wfProfileIn( __METHOD__ );
2236
2237                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2238
2239                 if ( $wgEnableSidebarCache ) {
2240                         $cachedsidebar = $parserMemc->get( $key );
2241                         if ( $cachedsidebar ) {
2242                                 wfProfileOut( __METHOD__ );
2243                                 return $cachedsidebar;
2244                         }
2245                 }
2246
2247                 $bar = array();
2248                 $this->addToSidebar( $bar, 'sidebar' );
2249
2250                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2251                 if ( $wgEnableSidebarCache ) {
2252                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2253                 }
2254
2255                 wfProfileOut( __METHOD__ );
2256                 return $bar;
2257         }
2258         /**
2259          * Add content from a sidebar system message
2260          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2261          *
2262          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2263          *
2264          * @param &$bar array
2265          * @param $message String
2266          */
2267         function addToSidebar( &$bar, $message ) {
2268                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2269         }
2270
2271         /**
2272          * Add content from plain text
2273          * @since 1.17
2274          * @param &$bar array
2275          * @param $text string
2276          */
2277         function addToSidebarPlain( &$bar, $text ) {
2278                 $lines = explode( "\n", $text );
2279                 $wikiBar = array(); # We need to handle the wikitext on a different variable, to avoid trying to do an array operation on text, which would be a fatal error.
2280
2281                 $heading = '';
2282
2283                 foreach ( $lines as $line ) {
2284                         if ( strpos( $line, '*' ) !== 0 ) {
2285                                 continue;
2286                         }
2287
2288                         if ( strpos( $line, '**' ) !== 0 ) {
2289                                 $heading = trim( $line, '* ' );
2290                                 if ( !array_key_exists( $heading, $bar ) ) {
2291                                         $bar[$heading] = array();
2292                                 }
2293                         } else {
2294                                 $line = trim( $line, '* ' );
2295
2296                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2297                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2298                                         $link = wfMsgForContent( $line[0] );
2299
2300                                         if ( $link == '-' ) {
2301                                                 continue;
2302                                         }
2303
2304                                         $text = wfMsgExt( $line[1], 'parsemag' );
2305
2306                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2307                                                 $text = $line[1];
2308                                         }
2309
2310                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2311                                                 $link = $line[0];
2312                                         }
2313
2314                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2315                                                 $href = $link;
2316                                         } else {
2317                                                 $title = Title::newFromText( $link );
2318
2319                                                 if ( $title ) {
2320                                                         $title = $title->fixSpecialName();
2321                                                         $href = $title->getLocalURL();
2322                                                 } else {
2323                                                         $href = 'INVALID-TITLE';
2324                                                 }
2325                                         }
2326
2327                                         $bar[$heading][] = array(
2328                                                 'text' => $text,
2329                                                 'href' => $href,
2330                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2331                                                 'active' => false
2332                                         );
2333                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2334                                         global $wgParser, $wgTitle;
2335
2336                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2337
2338                                         $options = new ParserOptions();
2339                                         $options->setEditSection( false );
2340                                         $options->setInterfaceMessage( true );
2341                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $options )->getText();
2342                                 } else {
2343                                         continue;
2344                                 }
2345                         }
2346                 }
2347
2348                 if ( count( $wikiBar ) > 0 ) {
2349                         $bar = array_merge( $bar, $wikiBar );
2350                 }
2351
2352                 return $bar;
2353         }
2354
2355         /**
2356          * Should we include common/wikiprintable.css?  Skins that have their own
2357          * print stylesheet should override this and return false.  (This is an
2358          * ugly hack to get Monobook to play nicely with
2359          * OutputPage::headElement().)
2360          *
2361          * @return bool
2362          */
2363         public function commonPrintStylesheet() {
2364                 return true;
2365         }
2366
2367         /**
2368          * Gets new talk page messages for the current user.
2369          * @return MediaWiki message or if no new talk page messages, nothing
2370          */
2371         function getNewtalks() {
2372                 global $wgUser, $wgOut;
2373
2374                 $newtalks = $wgUser->getNewMessageLinks();
2375                 $ntl = '';
2376
2377                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2378                         $userTitle = $this->mUser->getUserPage();
2379                         $userTalkTitle = $userTitle->getTalkPage();
2380
2381                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2382                                 $newMessagesLink = $this->link(
2383                                         $userTalkTitle,
2384                                         wfMsgHtml( 'newmessageslink' ),
2385                                         array(),
2386                                         array( 'redirect' => 'no' ),
2387                                         array( 'known', 'noclasses' )
2388                                 );
2389
2390                                 $newMessagesDiffLink = $this->link(
2391                                         $userTalkTitle,
2392                                         wfMsgHtml( 'newmessagesdifflink' ),
2393                                         array(),
2394                                         array( 'diff' => 'cur' ),
2395                                         array( 'known', 'noclasses' )
2396                                 );
2397
2398                                 $ntl = wfMsg(
2399                                         'youhavenewmessages',
2400                                         $newMessagesLink,
2401                                         $newMessagesDiffLink
2402                                 );
2403                                 # Disable Squid cache
2404                                 $wgOut->setSquidMaxage( 0 );
2405                         }
2406                 } elseif ( count( $newtalks ) ) {
2407                         // _>" " for BC <= 1.16
2408                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2409                         $msgs = array();
2410
2411                         foreach ( $newtalks as $newtalk ) {
2412                                 $msgs[] = Xml::element(
2413                                         'a',
2414                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2415                                 );
2416                         }
2417                         $parts = implode( $sep, $msgs );
2418                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2419                         $wgOut->setSquidMaxage( 0 );
2420                 }
2421
2422                 return $ntl;
2423         }
2424 }