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         }
 664
 665         function getPageClasses( $title ) {
 666                 $numeric = 'ns-' . $title->getNamespace();
 667
 668                 if ( $title->getNamespace() == NS_SPECIAL ) {
 669                         $type = 'ns-special';
 670                 } elseif ( $title->isTalkPage() ) {
 671                         $type = 'ns-talk';
 672                 } else {
 673                         $type = 'ns-subject';
 674                 }
 675
 676                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 677
 678                 return "$numeric $type $name";
 679         }
 680
 681         /**
 682          * This will be called by OutputPage::headElement when it is creating the
 683          * <body> tag, skins can override it if they have a need to add in any
 684          * body attributes or classes of their own.
 685          */
 686         function addToBodyAttributes( $out, &$bodyAttrs ) {
 687                 // does nothing by default
 688         }
 689
 690         /**
 691          * URL to the logo
 692          */
 693         function getLogo() {
 694                 global $wgLogo;
 695                 return $wgLogo;
 696         }
 697
 698         /**
 699          * This will be called immediately after the <body> tag.  Split into
 700          * two functions to make it easier to subclass.
 701          */
 702         function beforeContent() {
 703                 return $this->doBeforeContent();
 704         }
 705
 706         function doBeforeContent() {
 707                 global $wgContLang;
 708                 wfProfileIn( __METHOD__ );
 709
 710                 $s = '';
 711                 $qb = $this->qbSetting();
 712
 713                 $langlinks = $this->otherLanguages();
 714                 if ( $langlinks ) {
 715                         $rows = 2;
 716                         $borderhack = '';
 717                 } else {
 718                         $rows = 1;
 719                         $langlinks = false;
 720                         $borderhack = 'class="top"';
 721                 }
 722
 723                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 724                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 725
 726                 $shove = ( $qb != 0 );
 727                 $left = ( $qb == 1 || $qb == 3 );
 728
 729                 if ( !$shove ) {
 730                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 731                                 $this->logoText() . '</td>';
 732                 } elseif ( $left ) {
 733                         $s .= $this->getQuickbarCompensator( $rows );
 734                 }
 735
 736                 $l = $wgContLang->alignStart();
 737                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 738
 739                 $s .= $this->topLinks();
 740                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 741
 742                 $r = $wgContLang->alignEnd();
 743                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 744                 $s .= $this->nameAndLogin();
 745                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 746
 747                 if ( $langlinks ) {
 748                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 749                 }
 750
 751                 if ( $shove && !$left ) { # Right
 752                         $s .= $this->getQuickbarCompensator( $rows );
 753                 }
 754
 755                 $s .= "</tr>\n</table>\n</div>\n";
 756                 $s .= "\n<div id='article'>\n";
 757
 758                 $notice = wfGetSiteNotice();
 759
 760                 if ( $notice ) {
 761                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 762                 }
 763                 $s .= $this->pageTitle();
 764                 $s .= $this->pageSubtitle();
 765                 $s .= $this->getCategories();
 766
 767                 wfProfileOut( __METHOD__ );
 768                 return $s;
 769         }
 770
 771         function getCategoryLinks() {
 772                 global $wgOut, $wgUseCategoryBrowser;
 773                 global $wgContLang, $wgUser;
 774
 775                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 776                         return '';
 777                 }
 778
 779                 # Separator
 780                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 781
 782                 // Use Unicode bidi embedding override characters,
 783                 // to make sure links don't smash each other up in ugly ways.
 784                 $dir = $wgContLang->getDir();
 785                 $embed = "<span dir='$dir'>";
 786                 $pop = '</span>';
 787
 788                 $allCats = $wgOut->getCategoryLinks();
 789                 $s = '';
 790                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 791
 792                 if ( !empty( $allCats['normal'] ) ) {
 793                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 794
 795                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 796                         $s .= '<div id="mw-normal-catlinks">' .
 797                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 798                                 . $colon . $t . '</div>';
 799                 }
 800
 801                 # Hidden categories
 802                 if ( isset( $allCats['hidden'] ) ) {
 803                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 804                                 $class = 'mw-hidden-cats-user-shown';
 805                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 806                                 $class = 'mw-hidden-cats-ns-shown';
 807                         } else {
 808                                 $class = 'mw-hidden-cats-hidden';
 809                         }
 810
 811                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 812                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 813                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 814                                 '</div>';
 815                 }
 816
 817                 # optional 'dmoz-like' category browser. Will be shown under the list
 818                 # of categories an article belong to
 819                 if ( $wgUseCategoryBrowser ) {
 820                         $s .= '<br /><hr />';
 821
 822                         # get a big array of the parents tree
 823                         $parenttree = $this->mTitle->getParentCategoryTree();
 824                         # Skin object passed by reference cause it can not be
 825                         # accessed under the method subfunction drawCategoryBrowser
 826                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 827                         # Clean out bogus first entry and sort them
 828                         unset( $tempout[0] );
 829                         asort( $tempout );
 830                         # Output one per line
 831                         $s .= implode( "<br />\n", $tempout );
 832                 }
 833
 834                 return $s;
 835         }
 836
 837         /**
 838          * Render the array as a serie of links.
 839          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 840          * @param &skin Object: skin passed by reference
 841          * @return String separated by &gt;, terminate with "\n"
 842          */
 843         function drawCategoryBrowser( $tree, &$skin ) {
 844                 $return = '';
 845
 846                 foreach ( $tree as $element => $parent ) {
 847                         if ( empty( $parent ) ) {
 848                                 # element start a new list
 849                                 $return .= "\n";
 850                         } else {
 851                                 # grab the others elements
 852                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 853                         }
 854
 855                         # add our current element to the list
 856                         $eltitle = Title::newFromText( $element );
 857                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 858                 }
 859
 860                 return $return;
 861         }
 862
 863         function getCategories() {
 864                 $catlinks = $this->getCategoryLinks();
 865
 866                 $classes = 'catlinks';
 867
 868                 global $wgOut, $wgUser;
 869
 870                 // Check what we're showing
 871                 $allCats = $wgOut->getCategoryLinks();
 872                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 873                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 874
 875                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 876                         $classes .= ' catlinks-allhidden';
 877                 }
 878
 879                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 880         }
 881
 882         function getQuickbarCompensator( $rows = 1 ) {
 883                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 884         }
 885
 886         /**
 887          * This runs a hook to allow extensions placing their stuff after content
 888          * and article metadata (e.g. categories).
 889          * Note: This function has nothing to do with afterContent().
 890          *
 891          * This hook is placed here in order to allow using the same hook for all
 892          * skins, both the SkinTemplate based ones and the older ones, which directly
 893          * use this class to get their data.
 894          *
 895          * The output of this function gets processed in SkinTemplate::outputPage() for
 896          * the SkinTemplate based skins, all other skins should directly echo it.
 897          *
 898          * Returns an empty string by default, if not changed by any hook function.
 899          */
 900         protected function afterContentHook() {
 901                 $data = '';
 902
 903                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 904                         // adding just some spaces shouldn't toggle the output
 905                         // of the whole <div/>, so we use trim() here
 906                         if ( trim( $data ) != '' ) {
 907                                 // Doing this here instead of in the skins to
 908                                 // ensure that the div has the same ID in all
 909                                 // skins
 910                                 $data = "<div id='mw-data-after-content'>\n" .
 911                                         "\t$data\n" .
 912                                         "</div>\n";
 913                         }
 914                 } else {
 915                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 916                 }
 917
 918                 return $data;
 919         }
 920
 921         /**
 922          * Generate debug data HTML for displaying at the bottom of the main content
 923          * area.
 924          * @return String HTML containing debug data, if enabled (otherwise empty).
 925          */
 926         protected function generateDebugHTML() {
 927                 global $wgShowDebug, $wgOut;
 928
 929                 if ( $wgShowDebug ) {
 930                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 931                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 932                                 $listInternals . "</ul>\n";
 933                 }
 934
 935                 return '';
 936         }
 937
 938         private function formatDebugHTML( $debugText ) {
 939                 $lines = explode( "\n", $debugText );
 940                 $curIdent = 0;
 941                 $ret = '<li>';
 942
 943                 foreach ( $lines as $line ) {
 944                         $display = ltrim( $line );
 945                         $ident = strlen( $line ) - strlen( $display );
 946                         $diff = $ident - $curIdent;
 947
 948                         if ( $display == '' ) {
 949                                 $display = "\xc2\xa0";
 950                         }
 951
 952                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 953                                 $ident = $curIdent;
 954                                 $diff = 0;
 955                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 956                         } else {
 957                                 $display = htmlspecialchars( $display );
 958                         }
 959
 960                         if ( $diff < 0 ) {
 961                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 962                         } elseif ( $diff == 0 ) {
 963                                 $ret .= "</li><li>\n";
 964                         } else {
 965                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 966                         }
 967                         $ret .= $display . "\n";
 968
 969                         $curIdent = $ident;
 970                 }
 971
 972                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 973
 974                 return $ret;
 975         }
 976
 977         /**
 978          * This gets called shortly before the </body> tag.
 979          * @return String HTML to be put before </body>
 980          */
 981         function afterContent() {
 982                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 983                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 984         }
 985
 986         /**
 987          * This gets called shortly before the </body> tag.
 988          * @param $out OutputPage object
 989          * @return String HTML-wrapped JS code to be put before </body>
 990          */
 991         function bottomScripts( $out ) {
 992                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 993                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 994
 995                 return $bottomScriptText;
 996         }
 997
 998         /** @return string Retrievied from HTML text */
 999         function printSource() {
1000                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
1001                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
1002         }
1003
1004         function printFooter() {
1005                 return "<p>" .  $this->printSource() .
1006                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1007         }
1008
1009         /** overloaded by derived classes */
1010         function doAfterContent() {
1011                 return '</div></div>';
1012         }
1013
1014         function pageTitleLinks() {
1015                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1016
1017                 $oldid = $wgRequest->getVal( 'oldid' );
1018                 $diff = $wgRequest->getVal( 'diff' );
1019                 $action = $wgRequest->getText( 'action' );
1020
1021                 $s[] = $this->printableLink();
1022                 $disclaimer = $this->disclaimerLink(); # may be empty
1023
1024                 if ( $disclaimer ) {
1025                         $s[] = $disclaimer;
1026                 }
1027
1028                 $privacy = $this->privacyLink(); # may be empty too
1029
1030                 if ( $privacy ) {
1031                         $s[] = $privacy;
1032                 }
1033
1034                 if ( $wgOut->isArticleRelated() ) {
1035                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1036                                 $name = $this->mTitle->getDBkey();
1037                                 $image = wfFindFile( $this->mTitle );
1038
1039                                 if ( $image ) {
1040                                         $link = htmlspecialchars( $image->getURL() );
1041                                         $style = $this->getInternalLinkAttributes( $link, $name );
1042                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1043                                 }
1044                         }
1045                 }
1046
1047                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1048                         $s[] .= $this->link(
1049                                         $this->mTitle,
1050                                         wfMsg( 'currentrev' ),
1051                                         array(),
1052                                         array(),
1053                                         array( 'known', 'noclasses' )
1054                         );
1055                 }
1056
1057                 if ( $wgUser->getNewtalk() ) {
1058                         # do not show "You have new messages" text when we are viewing our
1059                         # own talk page
1060                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1061                                 $tl = $this->link(
1062                                         $wgUser->getTalkPage(),
1063                                         wfMsgHtml( 'newmessageslink' ),
1064                                         array(),
1065                                         array( 'redirect' => 'no' ),
1066                                         array( 'known', 'noclasses' )
1067                                 );
1068
1069                                 $dl = $this->link(
1070                                         $wgUser->getTalkPage(),
1071                                         wfMsgHtml( 'newmessagesdifflink' ),
1072                                         array(),
1073                                         array( 'diff' => 'cur' ),
1074                                         array( 'known', 'noclasses' )
1075                                 );
1076                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1077                                 # disable caching
1078                                 $wgOut->setSquidMaxage( 0 );
1079                                 $wgOut->enableClientCache( false );
1080                         }
1081                 }
1082
1083                 $undelete = $this->getUndeleteLink();
1084
1085                 if ( !empty( $undelete ) ) {
1086                         $s[] = $undelete;
1087                 }
1088
1089                 return $wgLang->pipeList( $s );
1090         }
1091
1092         function getUndeleteLink() {
1093                 global $wgUser, $wgLang, $wgRequest;
1094
1095                 $action = $wgRequest->getVal( 'action', 'view' );
1096
1097                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1098                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1099                         $n = $this->mTitle->isDeleted();
1100
1101                         if ( $n ) {
1102                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1103                                         $msg = 'thisisdeleted';
1104                                 } else {
1105                                         $msg = 'viewdeleted';
1106                                 }
1107
1108                                 return wfMsg(
1109                                         $msg,
1110                                         $this->link(
1111                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1112                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1113                                                 array(),
1114                                                 array(),
1115                                                 array( 'known', 'noclasses' )
1116                                         )
1117                                 );
1118                         }
1119                 }
1120
1121                 return '';
1122         }
1123
1124         function printableLink() {
1125                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1126
1127                 $s = array();
1128
1129                 if ( !$wgOut->isPrintable() ) {
1130                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1131                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1132                 }
1133
1134                 if ( $wgOut->isSyndicated() ) {
1135                         foreach ( $wgFeedClasses as $format => $class ) {
1136                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1137                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1138                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1139                         }
1140                 }
1141                 return $wgLang->pipeList( $s );
1142         }
1143
1144         /**
1145          * Gets the h1 element with the page title.
1146          * @return string
1147          */
1148         function pageTitle() {
1149                 global $wgOut;
1150                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1151                 return $s;
1152         }
1153
1154         function pageSubtitle() {
1155                 global $wgOut;
1156
1157                 $sub = $wgOut->getSubtitle();
1158
1159                 if ( $sub == '' ) {
1160                         global $wgExtraSubtitle;
1161                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1162                 }
1163
1164                 $subpages = $this->subPageSubtitle();
1165                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1166                 $s = "<p class='subtitle'>{$sub}</p>\n";
1167
1168                 return $s;
1169         }
1170
1171         function subPageSubtitle() {
1172                 $subpages = '';
1173
1174                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this ) ) ) {
1175                         return $subpages;
1176                 }
1177
1178                 global $wgOut;
1179
1180                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1181                         $ptext = $this->mTitle->getPrefixedText();
1182                         if ( preg_match( '/\//', $ptext ) ) {
1183                                 $links = explode( '/', $ptext );
1184                                 array_pop( $links );
1185                                 $c = 0;
1186                                 $growinglink = '';
1187                                 $display = '';
1188
1189                                 foreach ( $links as $link ) {
1190                                         $growinglink .= $link;
1191                                         $display .= $link;
1192                                         $linkObj = Title::newFromText( $growinglink );
1193
1194                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1195                                                 $getlink = $this->link(
1196                                                         $linkObj,
1197                                                         htmlspecialchars( $display ),
1198                                                         array(),
1199                                                         array(),
1200                                                         array( 'known', 'noclasses' )
1201                                                 );
1202
1203                                                 $c++;
1204
1205                                                 if ( $c > 1 ) {
1206                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1207                                                 } else  {
1208                                                         $subpages .= '&lt; ';
1209                                                 }
1210
1211                                                 $subpages .= $getlink;
1212                                                 $display = '';
1213                                         } else {
1214                                                 $display .= '/';
1215                                         }
1216                                         $growinglink .= '/';
1217                                 }
1218                         }
1219                 }
1220
1221                 return $subpages;
1222         }
1223
1224         /**
1225          * Returns true if the IP should be shown in the header
1226          */
1227         function showIPinHeader() {
1228                 global $wgShowIPinHeader;
1229                 return $wgShowIPinHeader && session_id() != '';
1230         }
1231
1232         function nameAndLogin() {
1233                 global $wgUser, $wgLang, $wgContLang;
1234
1235                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1236
1237                 $ret = '';
1238
1239                 if ( $wgUser->isAnon() ) {
1240                         if ( $this->showIPinHeader() ) {
1241                                 $name = wfGetIP();
1242
1243                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1244                                         $wgLang->getNsText( NS_TALK ) );
1245
1246                                 $ret .= "$name ($talkLink)";
1247                         } else {
1248                                 $ret .= wfMsg( 'notloggedin' );
1249                         }
1250
1251                         $returnTo = $this->mTitle->getPrefixedDBkey();
1252                         $query = array();
1253
1254                         if ( $logoutPage != $returnTo ) {
1255                                 $query['returnto'] = $returnTo;
1256                         }
1257
1258                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1259                                 ? 'nav-login-createaccount'
1260                                 : 'login';
1261                         $ret .= "\n<br />" . $this->link(
1262                                 SpecialPage::getTitleFor( 'Userlogin' ),
1263                                 wfMsg( $loginlink ), array(), $query
1264                         );
1265                 } else {
1266                         $returnTo = $this->mTitle->getPrefixedDBkey();
1267                         $talkLink = $this->link( $wgUser->getTalkPage(),
1268                                 $wgLang->getNsText( NS_TALK ) );
1269
1270                         $ret .= $this->link( $wgUser->getUserPage(),
1271                                 htmlspecialchars( $wgUser->getName() ) );
1272                         $ret .= " ($talkLink)<br />";
1273                         $ret .= $wgLang->pipeList( array(
1274                                 $this->link(
1275                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1276                                         array(), array( 'returnto' => $returnTo )
1277                                 ),
1278                                 $this->specialLink( 'Preferences' ),
1279                         ) );
1280                 }
1281
1282                 $ret = $wgLang->pipeList( array(
1283                         $ret,
1284                         $this->link(
1285                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1286                                 wfMsg( 'help' )
1287                         ),
1288                 ) );
1289
1290                 return $ret;
1291         }
1292
1293         function getSearchLink() {
1294                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1295                 return $searchPage->getLocalURL();
1296         }
1297
1298         function escapeSearchLink() {
1299                 return htmlspecialchars( $this->getSearchLink() );
1300         }
1301
1302         function searchForm() {
1303                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1304
1305                 $search = $wgRequest->getText( 'search' );
1306
1307                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1308                   . $this->escapeSearchLink() . "\">\n"
1309                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1310                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1311                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1312
1313                 if ( $wgUseTwoButtonsSearchForm ) {
1314                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1315                 } else {
1316                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1317                 }
1318
1319                 $s .= '</form>';
1320
1321                 // Ensure unique id's for search boxes made after the first
1322                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1323
1324                 return $s;
1325         }
1326
1327         function topLinks() {
1328                 global $wgOut;
1329
1330                 $s = array(
1331                         $this->mainPageLink(),
1332                         $this->specialLink( 'Recentchanges' )
1333                 );
1334
1335                 if ( $wgOut->isArticleRelated() ) {
1336                         $s[] = $this->editThisPage();
1337                         $s[] = $this->historyLink();
1338                 }
1339
1340                 # Many people don't like this dropdown box
1341                 # $s[] = $this->specialPagesList();
1342
1343                 if ( $this->variantLinks() ) {
1344                         $s[] = $this->variantLinks();
1345                 }
1346
1347                 if ( $this->extensionTabLinks() ) {
1348                         $s[] = $this->extensionTabLinks();
1349                 }
1350
1351                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1352                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1353         }
1354
1355         /**
1356          * Compatibility for extensions adding functionality through tabs.
1357          * Eventually these old skins should be replaced with SkinTemplate-based
1358          * versions, sigh...
1359          * @return string
1360          */
1361         function extensionTabLinks() {
1362                 $tabs = array();
1363                 $out = '';
1364                 $s = array();
1365                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1366                 foreach ( $tabs as $tab ) {
1367                         $s[] = Xml::element( 'a',
1368                                 array( 'href' => $tab['href'] ),
1369                                 $tab['text'] );
1370                 }
1371
1372                 if ( count( $s ) ) {
1373                         global $wgLang;
1374
1375                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1376                         $out .= $wgLang->pipeList( $s );
1377                 }
1378
1379                 return $out;
1380         }
1381
1382         /**
1383          * Language/charset variant links for classic-style skins
1384          * @return string
1385          */
1386         function variantLinks() {
1387                 $s = '';
1388
1389                 /* show links to different language variants */
1390                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1391
1392                 $variants = $wgContLang->getVariants();
1393
1394                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1395                         foreach ( $variants as $code ) {
1396                                 $varname = $wgContLang->getVariantname( $code );
1397
1398                                 if ( $varname == 'disable' ) {
1399                                         continue;
1400                                 }
1401                                 $s = $wgLang->pipeList( array(
1402                                         $s,
1403                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1404                                 ) );
1405                         }
1406                 }
1407
1408                 return $s;
1409         }
1410
1411         function bottomLinks() {
1412                 global $wgOut, $wgUser, $wgUseTrackbacks;
1413                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1414
1415                 $s = '';
1416                 if ( $wgOut->isArticleRelated() ) {
1417                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1418
1419                         if ( $wgUser->isLoggedIn() ) {
1420                                 $element[] = $this->watchThisPage();
1421                         }
1422
1423                         $element[] = $this->talkLink();
1424                         $element[] = $this->historyLink();
1425                         $element[] = $this->whatLinksHere();
1426                         $element[] = $this->watchPageLinksLink();
1427
1428                         if ( $wgUseTrackbacks ) {
1429                                 $element[] = $this->trackbackLink();
1430                         }
1431
1432                         if (
1433                                 $this->mTitle->getNamespace() == NS_USER ||
1434                                 $this->mTitle->getNamespace() == NS_USER_TALK
1435                         ) {
1436                                 $id = User::idFromName( $this->mTitle->getText() );
1437                                 $ip = User::isIP( $this->mTitle->getText() );
1438
1439                                 # Both anons and non-anons have contributions list
1440                                 if ( $id || $ip ) {
1441                                         $element[] = $this->userContribsLink();
1442                                 }
1443
1444                                 if ( $this->showEmailUser( $id ) ) {
1445                                         $element[] = $this->emailUserLink();
1446                                 }
1447                         }
1448
1449                         $s = implode( $element, $sep );
1450
1451                         if ( $this->mTitle->getArticleId() ) {
1452                                 $s .= "\n<br />";
1453
1454                                 // Delete/protect/move links for privileged users
1455                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1456                                         $s .= $this->deleteThisPage();
1457                                 }
1458
1459                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1460                                         $s .= $sep . $this->protectThisPage();
1461                                 }
1462
1463                                 if ( $wgUser->isAllowed( 'move' ) ) {
1464                                         $s .= $sep . $this->moveThisPage();
1465                                 }
1466                         }
1467
1468                         $s .= "<br />\n" . $this->otherLanguages();
1469                 }
1470
1471                 return $s;
1472         }
1473
1474         function pageStats() {
1475                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1476                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1477
1478                 if ( !is_null( $wgRequest->getVal( 'oldid' ) ) || !is_null( $wgRequest->getVal( 'diff' ) ) ) {
1479                         return '';
1480                 }
1481
1482                 if ( !$wgOut->isArticle() || !$this->mTitle->exists() ) {
1483                         return '';
1484                 }
1485
1486                 $s = '';
1487
1488                 if ( !$wgDisableCounters ) {
1489                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1490
1491                         if ( $count ) {
1492                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1493                         }
1494                 }
1495
1496                 if ( $wgMaxCredits != 0 ) {
1497                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1498                 } else {
1499                         $s .= $this->lastModified();
1500                 }
1501
1502                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1503                         $dbr = wfGetDB( DB_SLAVE );
1504                         $res = $dbr->select(
1505                                 'watchlist',
1506                                 array( 'COUNT(*) AS n' ),
1507                                 array(
1508                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1509                                         'wl_namespace' => $this->mTitle->getNamespace()
1510                                 ),
1511                                 __METHOD__
1512                         );
1513                         $x = $dbr->fetchObject( $res );
1514
1515                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1516                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1517                         );
1518                 }
1519
1520                 return $s . ' ' .  $this->getCopyright();
1521         }
1522
1523         function getCopyright( $type = 'detect' ) {
1524                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
1525
1526                 if ( $type == 'detect' ) {
1527                         $diff = $wgRequest->getVal( 'diff' );
1528
1529                         if ( is_null( $diff ) && !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1530                                 $type = 'history';
1531                         } else {
1532                                 $type = 'normal';
1533                         }
1534                 }
1535
1536                 if ( $type == 'history' ) {
1537                         $msg = 'history_copyright';
1538                 } else {
1539                         $msg = 'copyright';
1540                 }
1541
1542                 $out = '';
1543
1544                 if ( $wgRightsPage ) {
1545                         $title = Title::newFromText( $wgRightsPage );
1546                         $link = $this->linkKnown( $title, $wgRightsText );
1547                 } elseif ( $wgRightsUrl ) {
1548                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1549                 } elseif ( $wgRightsText ) {
1550                         $link = $wgRightsText;
1551                 } else {
1552                         # Give up now
1553                         return $out;
1554                 }
1555
1556                 // Allow for site and per-namespace customization of copyright notice.
1557                 $forContent = true;
1558
1559                 wfRunHooks( 'SkinCopyrightFooter', array( $this->mTitle, $type, &$msg, &$link, &$forContent ) );
1560
1561                 if ( $forContent ) {
1562                         $out .= wfMsgForContent( $msg, $link );
1563                 } else {
1564                         $out .= wfMsg( $msg, $link );
1565                 }
1566
1567                 return $out;
1568         }
1569
1570         function getCopyrightIcon() {
1571                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1572
1573                 $out = '';
1574
1575                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1576                         $out = $wgCopyrightIcon;
1577                 } elseif ( $wgRightsIcon ) {
1578                         $icon = htmlspecialchars( $wgRightsIcon );
1579
1580                         if ( $wgRightsUrl ) {
1581                                 $url = htmlspecialchars( $wgRightsUrl );
1582                                 $out .= '<a href="' . $url . '">';
1583                         }
1584
1585                         $text = htmlspecialchars( $wgRightsText );
1586                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1587
1588                         if ( $wgRightsUrl ) {
1589                                 $out .= '</a>';
1590                         }
1591                 }
1592
1593                 return $out;
1594         }
1595
1596         /**
1597          * Gets the powered by MediaWiki icon.
1598          * @return string
1599          */
1600         function getPoweredBy() {
1601                 global $wgStylePath;
1602
1603                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1604                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1605                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
1606                 return $text;
1607         }
1608
1609         function lastModified() {
1610                 global $wgLang, $wgArticle;
1611
1612                 if ( !$this->isRevisionCurrent() ) {
1613                         $timestamp = Revision::getTimestampFromId( $this->mTitle, $this->mRevisionId );
1614                 } else {
1615                         $timestamp = $wgArticle->getTimestamp();
1616                 }
1617
1618                 if ( $timestamp ) {
1619                         $d = $wgLang->date( $timestamp, true );
1620                         $t = $wgLang->time( $timestamp, true );
1621                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1622                 } else {
1623                         $s = '';
1624                 }
1625
1626                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1627                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1628                 }
1629
1630                 return $s;
1631         }
1632
1633         function logoText( $align = '' ) {
1634                 if ( $align != '' ) {
1635                         $a = " align='{$align}'";
1636                 } else {
1637                         $a = '';
1638                 }
1639
1640                 $mp = wfMsg( 'mainpage' );
1641                 $mptitle = Title::newMainPage();
1642                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1643
1644                 $logourl = $this->getLogo();
1645                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1646
1647                 return $s;
1648         }
1649
1650         /**
1651          * Show a drop-down box of special pages
1652          */
1653         function specialPagesList() {
1654                 global $wgContLang, $wgServer, $wgRedirectScript;
1655
1656                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1657
1658                 foreach ( $pages as $name => $page ) {
1659                         $pages[$name] = $page->getDescription();
1660                 }
1661
1662                 $go = wfMsg( 'go' );
1663                 $sp = wfMsg( 'specialpages' );
1664                 $spp = $wgContLang->specialPage( 'Specialpages' );
1665
1666                 $s = '<form id="specialpages" method="get" ' .
1667                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1668                 $s .= "<select name=\"wpDropdown\">\n";
1669                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1670
1671
1672                 foreach ( $pages as $name => $desc ) {
1673                         $p = $wgContLang->specialPage( $name );
1674                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1675                 }
1676
1677                 $s .= "</select>\n";
1678                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1679                 $s .= "</form>\n";
1680
1681                 return $s;
1682         }
1683
1684         /**
1685          * Renders a $wgFooterIcons icon acording to the method's arguments
1686          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1687          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1688          */
1689         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1690                 if ( is_string( $icon ) ) {
1691                         $html = $icon;
1692                 } else { // Assuming array
1693                         $url = $icon["url"];
1694                         unset( $icon["url"] );
1695                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1696                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1697                         } else {
1698                                 $html = htmlspecialchars( $icon["alt"] );
1699                         }
1700                         if ( $url ) {
1701                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1702                         }
1703                 }
1704                 return $html;
1705         }
1706
1707         /**
1708          * Gets the link to the wiki's main page.
1709          * @return string
1710          */
1711         function mainPageLink() {
1712                 $s = $this->link(
1713                         Title::newMainPage(),
1714                         wfMsg( 'mainpage' ),
1715                         array(),
1716                         array(),
1717                         array( 'known', 'noclasses' )
1718                 );
1719
1720                 return $s;
1721         }
1722
1723         public function footerLink( $desc, $page ) {
1724                 // if the link description has been set to "-" in the default language,
1725                 if ( wfMsgForContent( $desc )  == '-' ) {
1726                         // then it is disabled, for all languages.
1727                         return '';
1728                 } else {
1729                         // Otherwise, we display the link for the user, described in their
1730                         // language (which may or may not be the same as the default language),
1731                         // but we make the link target be the one site-wide page.
1732                         $title = Title::newFromText( wfMsgForContent( $page ) );
1733
1734                         return $this->linkKnown(
1735                                 $title,
1736                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1737                         );
1738                 }
1739         }
1740
1741         /**
1742          * Gets the link to the wiki's privacy policy page.
1743          */
1744         function privacyLink() {
1745                 return $this->footerLink( 'privacy', 'privacypage' );
1746         }
1747
1748         /**
1749          * Gets the link to the wiki's about page.
1750          */
1751         function aboutLink() {
1752                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1753         }
1754
1755         /**
1756          * Gets the link to the wiki's general disclaimers page.
1757          */
1758         function disclaimerLink() {
1759                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1760         }
1761
1762         function editThisPage() {
1763                 global $wgOut;
1764
1765                 if ( !$wgOut->isArticleRelated() ) {
1766                         $s = wfMsg( 'protectedpage' );
1767                 } else {
1768                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1769                                 $t = wfMsg( 'editthispage' );
1770                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1771                                 $t = wfMsg( 'create-this-page' );
1772                         } else {
1773                                 $t = wfMsg( 'viewsource' );
1774                         }
1775
1776                         $s = $this->link(
1777                                 $this->mTitle,
1778                                 $t,
1779                                 array(),
1780                                 $this->editUrlOptions(),
1781                                 array( 'known', 'noclasses' )
1782                         );
1783                 }
1784
1785                 return $s;
1786         }
1787
1788         /**
1789          * Return URL options for the 'edit page' link.
1790          * This may include an 'oldid' specifier, if the current page view is such.
1791          *
1792          * @return array
1793          * @private
1794          */
1795         function editUrlOptions() {
1796                 $options = array( 'action' => 'edit' );
1797
1798                 if ( !$this->isRevisionCurrent() ) {
1799                         $options['oldid'] = intval( $this->mRevisionId );
1800                 }
1801
1802                 return $options;
1803         }
1804
1805         function deleteThisPage() {
1806                 global $wgUser, $wgRequest;
1807
1808                 $diff = $wgRequest->getVal( 'diff' );
1809
1810                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1811                         $t = wfMsg( 'deletethispage' );
1812
1813                         $s = $this->link(
1814                                 $this->mTitle,
1815                                 $t,
1816                                 array(),
1817                                 array( 'action' => 'delete' ),
1818                                 array( 'known', 'noclasses' )
1819                         );
1820                 } else {
1821                         $s = '';
1822                 }
1823
1824                 return $s;
1825         }
1826
1827         function protectThisPage() {
1828                 global $wgUser, $wgRequest;
1829
1830                 $diff = $wgRequest->getVal( 'diff' );
1831
1832                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1833                         if ( $this->mTitle->isProtected() ) {
1834                                 $text = wfMsg( 'unprotectthispage' );
1835                                 $query = array( 'action' => 'unprotect' );
1836                         } else {
1837                                 $text = wfMsg( 'protectthispage' );
1838                                 $query = array( 'action' => 'protect' );
1839                         }
1840
1841                         $s = $this->link(
1842                                 $this->mTitle,
1843                                 $text,
1844                                 array(),
1845                                 $query,
1846                                 array( 'known', 'noclasses' )
1847                         );
1848                 } else {
1849                         $s = '';
1850                 }
1851
1852                 return $s;
1853         }
1854
1855         function watchThisPage() {
1856                 global $wgOut;
1857                 ++$this->mWatchLinkNum;
1858
1859                 if ( $wgOut->isArticleRelated() ) {
1860                         if ( $this->mTitle->userIsWatching() ) {
1861                                 $text = wfMsg( 'unwatchthispage' );
1862                                 $query = array( 'action' => 'unwatch' );
1863                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1864                         } else {
1865                                 $text = wfMsg( 'watchthispage' );
1866                                 $query = array( 'action' => 'watch' );
1867                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1868                         }
1869
1870                         $s = $this->link(
1871                                 $this->mTitle,
1872                                 $text,
1873                                 array( 'id' => $id ),
1874                                 $query,
1875                                 array( 'known', 'noclasses' )
1876                         );
1877                 } else {
1878                         $s = wfMsg( 'notanarticle' );
1879                 }
1880
1881                 return $s;
1882         }
1883
1884         function moveThisPage() {
1885                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1886                         return $this->link(
1887                                 SpecialPage::getTitleFor( 'Movepage' ),
1888                                 wfMsg( 'movethispage' ),
1889                                 array(),
1890                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1891                                 array( 'known', 'noclasses' )
1892                         );
1893                 } else {
1894                         // no message if page is protected - would be redundant
1895                         return '';
1896                 }
1897         }
1898
1899         function historyLink() {
1900                 return $this->link(
1901                         $this->mTitle,
1902                         wfMsgHtml( 'history' ),
1903                         array( 'rel' => 'archives' ),
1904                         array( 'action' => 'history' )
1905                 );
1906         }
1907
1908         function whatLinksHere() {
1909                 return $this->link(
1910                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1911                         wfMsgHtml( 'whatlinkshere' ),
1912                         array(),
1913                         array(),
1914                         array( 'known', 'noclasses' )
1915                 );
1916         }
1917
1918         function userContribsLink() {
1919                 return $this->link(
1920                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1921                         wfMsgHtml( 'contributions' ),
1922                         array(),
1923                         array(),
1924                         array( 'known', 'noclasses' )
1925                 );
1926         }
1927
1928         function showEmailUser( $id ) {
1929                 global $wgUser;
1930                 $targetUser = User::newFromId( $id );
1931                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1932                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1933         }
1934
1935         function emailUserLink() {
1936                 return $this->link(
1937                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1938                         wfMsg( 'emailuser' ),
1939                         array(),
1940                         array(),
1941                         array( 'known', 'noclasses' )
1942                 );
1943         }
1944
1945         function watchPageLinksLink() {
1946                 global $wgOut;
1947
1948                 if ( !$wgOut->isArticleRelated() ) {
1949                         return '(' . wfMsg( 'notanarticle' ) . ')';
1950                 } else {
1951                         return $this->link(
1952                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1953                                 wfMsg( 'recentchangeslinked-toolbox' ),
1954                                 array(),
1955                                 array(),
1956                                 array( 'known', 'noclasses' )
1957                         );
1958                 }
1959         }
1960
1961         function trackbackLink() {
1962                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1963                         . wfMsg( 'trackbacklink' ) . '</a>';
1964         }
1965
1966         function otherLanguages() {
1967                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1968
1969                 if ( $wgHideInterlanguageLinks ) {
1970                         return '';
1971                 }
1972
1973                 $a = $wgOut->getLanguageLinks();
1974
1975                 if ( 0 == count( $a ) ) {
1976                         return '';
1977                 }
1978
1979                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1980                 $first = true;
1981
1982                 if ( $wgContLang->isRTL() ) {
1983                         $s .= '<span dir="LTR">';
1984                 }
1985
1986                 foreach ( $a as $l ) {
1987                         if ( !$first ) {
1988                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1989                         }
1990
1991                         $first = false;
1992
1993                         $nt = Title::newFromText( $l );
1994                         $url = $nt->escapeFullURL();
1995                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1996                         $title = htmlspecialchars( $nt->getText() );
1997
1998                         if ( $text == '' ) {
1999                                 $text = $l;
2000                         }
2001
2002                         $style = $this->getExternalLinkAttributes();
2003                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
2004                 }
2005
2006                 if ( $wgContLang->isRTL() ) {
2007                         $s .= '</span>';
2008                 }
2009
2010                 return $s;
2011         }
2012
2013         function talkLink() {
2014                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
2015                         # No discussion links for special pages
2016                         return '';
2017                 }
2018
2019                 $linkOptions = array();
2020
2021                 if ( $this->mTitle->isTalkPage() ) {
2022                         $link = $this->mTitle->getSubjectPage();
2023                         switch( $link->getNamespace() ) {
2024                                 case NS_MAIN:
2025                                         $text = wfMsg( 'articlepage' );
2026                                         break;
2027                                 case NS_USER:
2028                                         $text = wfMsg( 'userpage' );
2029                                         break;
2030                                 case NS_PROJECT:
2031                                         $text = wfMsg( 'projectpage' );
2032                                         break;
2033                                 case NS_FILE:
2034                                         $text = wfMsg( 'imagepage' );
2035                                         # Make link known if image exists, even if the desc. page doesn't.
2036                                         if ( wfFindFile( $link ) )
2037                                                 $linkOptions[] = 'known';
2038                                         break;
2039                                 case NS_MEDIAWIKI:
2040                                         $text = wfMsg( 'mediawikipage' );
2041                                         break;
2042                                 case NS_TEMPLATE:
2043                                         $text = wfMsg( 'templatepage' );
2044                                         break;
2045                                 case NS_HELP:
2046                                         $text = wfMsg( 'viewhelppage' );
2047                                         break;
2048                                 case NS_CATEGORY:
2049                                         $text = wfMsg( 'categorypage' );
2050                                         break;
2051                                 default:
2052                                         $text = wfMsg( 'articlepage' );
2053                         }
2054                 } else {
2055                         $link = $this->mTitle->getTalkPage();
2056                         $text = wfMsg( 'talkpage' );
2057                 }
2058
2059                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
2060
2061                 return $s;
2062         }
2063
2064         function commentLink() {
2065                 global $wgOut;
2066
2067                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
2068                         return '';
2069                 }
2070
2071                 # __NEWSECTIONLINK___ changes behaviour here
2072                 # If it is present, the link points to this page, otherwise
2073                 # it points to the talk page
2074                 if ( $this->mTitle->isTalkPage() ) {
2075                         $title = $this->mTitle;
2076                 } elseif ( $wgOut->showNewSectionLink() ) {
2077                         $title = $this->mTitle;
2078                 } else {
2079                         $title = $this->mTitle->getTalkPage();
2080                 }
2081
2082                 return $this->link(
2083                         $title,
2084                         wfMsg( 'postcomment' ),
2085                         array(),
2086                         array(
2087                                 'action' => 'edit',
2088                                 'section' => 'new'
2089                         ),
2090                         array( 'known', 'noclasses' )
2091                 );
2092         }
2093
2094         function getUploadLink() {
2095                 global $wgUploadNavigationUrl;
2096
2097                 if ( $wgUploadNavigationUrl ) {
2098                         # Using an empty class attribute to avoid automatic setting of "external" class
2099                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
2100                 } else {
2101                         return $this->link(
2102                                 SpecialPage::getTitleFor( 'Upload' ),
2103                                 wfMsgHtml( 'upload' ),
2104                                 array(),
2105                                 array(),
2106                                 array( 'known', 'noclasses' )
2107                         );
2108                 }
2109         }
2110
2111         /**
2112          * Return a fully resolved style path url to images or styles stored in the common folder.
2113          * This method returns a url resolved using the configured skin style path
2114          * and includes the style version inside of the url.
2115          * @param $name String: The name or path of a skin resource file
2116          * @return String The fully resolved style path url including styleversion
2117          */
2118         function getCommonStylePath( $name ) {
2119                 global $wgStylePath, $wgStyleVersion;
2120                 return "$wgStylePath/common/$name?$wgStyleVersion";
2121         }
2122
2123         /**
2124          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
2125          * This method returns a url resolved using the configured skin style path
2126          * and includes the style version inside of the url.
2127          * @param $name String: The name or path of a skin resource file
2128          * @return String The fully resolved style path url including styleversion
2129          */
2130         function getSkinStylePath( $name ) {
2131                 global $wgStylePath, $wgStyleVersion;
2132                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
2133         }
2134
2135         /* these are used extensively in SkinTemplate, but also some other places */
2136         static function makeMainPageUrl( $urlaction = '' ) {
2137                 $title = Title::newMainPage();
2138                 self::checkTitle( $title, '' );
2139
2140                 return $title->getLocalURL( $urlaction );
2141         }
2142
2143         static function makeSpecialUrl( $name, $urlaction = '' ) {
2144                 $title = SpecialPage::getTitleFor( $name );
2145                 return $title->getLocalURL( $urlaction );
2146         }
2147
2148         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2149                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2150                 return $title->getLocalURL( $urlaction );
2151         }
2152
2153         static function makeI18nUrl( $name, $urlaction = '' ) {
2154                 $title = Title::newFromText( wfMsgForContent( $name ) );
2155                 self::checkTitle( $title, $name );
2156                 return $title->getLocalURL( $urlaction );
2157         }
2158
2159         static function makeUrl( $name, $urlaction = '' ) {
2160                 $title = Title::newFromText( $name );
2161                 self::checkTitle( $title, $name );
2162
2163                 return $title->getLocalURL( $urlaction );
2164         }
2165
2166         /**
2167          * If url string starts with http, consider as external URL, else
2168          * internal
2169          */
2170         static function makeInternalOrExternalUrl( $name ) {
2171                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2172                         return $name;
2173                 } else {
2174                         return self::makeUrl( $name );
2175                 }
2176         }
2177
2178         # this can be passed the NS number as defined in Language.php
2179         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2180                 $title = Title::makeTitleSafe( $namespace, $name );
2181                 self::checkTitle( $title, $name );
2182
2183                 return $title->getLocalURL( $urlaction );
2184         }
2185
2186         /* these return an array with the 'href' and boolean 'exists' */
2187         static function makeUrlDetails( $name, $urlaction = '' ) {
2188                 $title = Title::newFromText( $name );
2189                 self::checkTitle( $title, $name );
2190
2191                 return array(
2192                         'href' => $title->getLocalURL( $urlaction ),
2193                         'exists' => $title->getArticleID() != 0,
2194                 );
2195         }
2196
2197         /**
2198          * Make URL details where the article exists (or at least it's convenient to think so)
2199          */
2200         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2201                 $title = Title::newFromText( $name );
2202                 self::checkTitle( $title, $name );
2203
2204                 return array(
2205                         'href' => $title->getLocalURL( $urlaction ),
2206                         'exists' => true
2207                 );
2208         }
2209
2210         # make sure we have some title to operate on
2211         static function checkTitle( &$title, $name ) {
2212                 if ( !is_object( $title ) ) {
2213                         $title = Title::newFromText( $name );
2214                         if ( !is_object( $title ) ) {
2215                                 $title = Title::newFromText( '--error: link target missing--' );
2216                         }
2217                 }
2218         }
2219
2220         /**
2221          * Build an array that represents the sidebar(s), the navigation bar among them
2222          *
2223          * @return array
2224          */
2225         function buildSidebar() {
2226                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2227                 global $wgLang;
2228                 wfProfileIn( __METHOD__ );
2229
2230                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2231
2232                 if ( $wgEnableSidebarCache ) {
2233                         $cachedsidebar = $parserMemc->get( $key );
2234                         if ( $cachedsidebar ) {
2235                                 wfProfileOut( __METHOD__ );
2236                                 return $cachedsidebar;
2237                         }
2238                 }
2239
2240                 $bar = array();
2241                 $this->addToSidebar( $bar, 'sidebar' );
2242
2243                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2244                 if ( $wgEnableSidebarCache ) {
2245                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2246                 }
2247
2248                 wfProfileOut( __METHOD__ );
2249                 return $bar;
2250         }
2251         /**
2252          * Add content from a sidebar system message
2253          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2254          *
2255          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2256          *
2257          * @param &$bar array
2258          * @param $message String
2259          */
2260         function addToSidebar( &$bar, $message ) {
2261                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2262         }
2263
2264         /**
2265          * Add content from plain text
2266          * @since 1.17
2267          * @param &$bar array
2268          * @param $text string
2269          */
2270         function addToSidebarPlain( &$bar, $text ) {
2271                 $lines = explode( "\n", $text );
2272                 $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.
2273
2274                 $heading = '';
2275
2276                 foreach ( $lines as $line ) {
2277                         if ( strpos( $line, '*' ) !== 0 ) {
2278                                 continue;
2279                         }
2280
2281                         if ( strpos( $line, '**' ) !== 0 ) {
2282                                 $heading = trim( $line, '* ' );
2283                                 if ( !array_key_exists( $heading, $bar ) ) {
2284                                         $bar[$heading] = array();
2285                                 }
2286                         } else {
2287                                 $line = trim( $line, '* ' );
2288
2289                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2290                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2291                                         $link = wfMsgForContent( $line[0] );
2292
2293                                         if ( $link == '-' ) {
2294                                                 continue;
2295                                         }
2296
2297                                         $text = wfMsgExt( $line[1], 'parsemag' );
2298
2299                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2300                                                 $text = $line[1];
2301                                         }
2302
2303                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2304                                                 $link = $line[0];
2305                                         }
2306
2307                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2308                                                 $href = $link;
2309                                         } else {
2310                                                 $title = Title::newFromText( $link );
2311
2312                                                 if ( $title ) {
2313                                                         $title = $title->fixSpecialName();
2314                                                         $href = $title->getLocalURL();
2315                                                 } else {
2316                                                         $href = 'INVALID-TITLE';
2317                                                 }
2318                                         }
2319
2320                                         $bar[$heading][] = array(
2321                                                 'text' => $text,
2322                                                 'href' => $href,
2323                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2324                                                 'active' => false
2325                                         );
2326                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2327                                         global $wgParser, $wgTitle;
2328
2329                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2330
2331                                         $options = new ParserOptions();
2332                                         $options->setEditSection( false );
2333                                         $options->setInterfaceMessage( true );
2334                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $options )->getText();
2335                                 } else {
2336                                         continue;
2337                                 }
2338                         }
2339                 }
2340
2341                 if ( count( $wikiBar ) > 0 ) {
2342                         $bar = array_merge( $bar, $wikiBar );
2343                 }
2344
2345                 return $bar;
2346         }
2347
2348         /**
2349          * Should we include common/wikiprintable.css?  Skins that have their own
2350          * print stylesheet should override this and return false.  (This is an
2351          * ugly hack to get Monobook to play nicely with
2352          * OutputPage::headElement().)
2353          *
2354          * @return bool
2355          */
2356         public function commonPrintStylesheet() {
2357                 return true;
2358         }
2359
2360         /**
2361          * Gets new talk page messages for the current user.
2362          * @return MediaWiki message or if no new talk page messages, nothing
2363          */
2364         function getNewtalks() {
2365                 global $wgUser, $wgOut;
2366
2367                 $newtalks = $wgUser->getNewMessageLinks();
2368                 $ntl = '';
2369
2370                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2371                         $userTitle = $this->mUser->getUserPage();
2372                         $userTalkTitle = $userTitle->getTalkPage();
2373
2374                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2375                                 $newMessagesLink = $this->link(
2376                                         $userTalkTitle,
2377                                         wfMsgHtml( 'newmessageslink' ),
2378                                         array(),
2379                                         array( 'redirect' => 'no' ),
2380                                         array( 'known', 'noclasses' )
2381                                 );
2382
2383                                 $newMessagesDiffLink = $this->link(
2384                                         $userTalkTitle,
2385                                         wfMsgHtml( 'newmessagesdifflink' ),
2386                                         array(),
2387                                         array( 'diff' => 'cur' ),
2388                                         array( 'known', 'noclasses' )
2389                                 );
2390
2391                                 $ntl = wfMsg(
2392                                         'youhavenewmessages',
2393                                         $newMessagesLink,
2394                                         $newMessagesDiffLink
2395                                 );
2396                                 # Disable Squid cache
2397                                 $wgOut->setSquidMaxage( 0 );
2398                         }
2399                 } elseif ( count( $newtalks ) ) {
2400                         // _>" " for BC <= 1.16
2401                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2402                         $msgs = array();
2403
2404                         foreach ( $newtalks as $newtalk ) {
2405                                 $msgs[] = Xml::element(
2406                                         'a',
2407                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2408                                 );
2409                         }
2410                         $parts = implode( $sep, $msgs );
2411                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2412                         $wgOut->setSquidMaxage( 0 );
2413                 }
2414
2415                 return $ntl;
2416         }
2417 }