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          * Set the title
 359          * @param $t Title object to use
 360          */
 361         public function setTitle( $t ) {
 362                 $this->mTitle = $t;
 363         }
 364
 365         /** Get the title */
 366         public function getTitle() {
 367                 return $this->mTitle;
 368         }
 369
 370         /**
 371          * Set the "relevant" title
 372          * @see self::getRelevantTitle()
 373          * @param $t Title object to use
 374          */
 375         public function setRelevantTitle( $t ) {
 376                 $this->mRelevantTitle = $t;
 377         }
 378
 379         /**
 380          * Return the "relevant" title.
 381          * A "relevant" title is not necessarily the actual title of the page.
 382          * Special pages like Special:MovePage use set the page they are acting on
 383          * as their "relevant" title, this allows the skin system to display things
 384          * such as content tabs which belong to to that page instead of displaying
 385          * a basic special page tab which has almost no meaning.
 386          */
 387         public function getRelevantTitle() {
 388                 if ( isset($this->mRelevantTitle) ) {
 389                         return $this->mRelevantTitle;
 390                 }
 391                 return $this->mTitle;
 392         }
 393
 394         /**
 395          * Set the "relevant" user
 396          * @see self::getRelevantUser()
 397          * @param $u User object to use
 398          */
 399         public function setRelevantUser( $u ) {
 400                 $this->mRelevantUser = $u;
 401         }
 402
 403         /**
 404          * Return the "relevant" user.
 405          * A "relevant" user is similar to a relevant title. Special pages like
 406          * Special:Contributions mark the user which they are relevant to so that
 407          * things like the toolbox can display the information they usually are only
 408          * able to display on a user's userpage and talkpage.
 409          */
 410         public function getRelevantUser() {
 411                 if ( isset($this->mRelevantUser) ) {
 412                         return $this->mRelevantUser;
 413                 }
 414                 $title = $this->getRelevantTitle();
 415                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 416                         $rootUser = strtok( $title->getText(), '/' );
 417                         if ( User::isIP( $rootUser ) ) {
 418                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 419                         } else {
 420                                 $user = User::newFromName( $rootUser );
 421                                 if ( $user->isLoggedIn() ) {
 422                                         $this->mRelevantUser = $user;
 423                                 }
 424                         }
 425                         return $this->mRelevantUser;
 426                 }
 427                 return null;
 428         }
 429
 430         /**
 431          * Outputs the HTML generated by other functions.
 432          * @param $out Object: instance of OutputPage
 433          */
 434         function outputPage( OutputPage $out ) {
 435                 global $wgDebugComments;
 436                 wfProfileIn( __METHOD__ );
 437
 438                 $this->setMembers();
 439                 $this->initPage( $out );
 440
 441                 // See self::afterContentHook() for documentation
 442                 $afterContent = $this->afterContentHook();
 443
 444                 $out->out( $out->headElement( $this ) );
 445
 446                 if ( $wgDebugComments ) {
 447                         $out->out( "<!-- Wiki debugging output:\n" .
 448                           $out->mDebugtext . "-->\n" );
 449                 }
 450
 451                 $out->out( $this->beforeContent() );
 452
 453                 $out->out( $out->mBodytext . "\n" );
 454
 455                 $out->out( $this->afterContent() );
 456
 457                 $out->out( $afterContent );
 458
 459                 $out->out( $this->bottomScripts( $out ) );
 460
 461                 $out->out( wfReportTime() );
 462
 463                 $out->out( "\n</body></html>" );
 464                 wfProfileOut( __METHOD__ );
 465         }
 466
 467         static function makeVariablesScript( $data ) {
 468                 if ( $data ) {
 469                         return Html::inlineScript(
 470                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 471                         );
 472                 } else {
 473                         return '';
 474                 }
 475         }
 476
 477         /**
 478          * Make a <script> tag containing global variables
 479          * @param $skinName string Name of the skin
 480          * The odd calling convention is for backwards compatibility
 481          * @todo FIXME: Make this not depend on $wgTitle!
 482          *
 483          * Do not add things here which can be evaluated in ResourceLoaderStartupScript - in other words, without state.
 484          * You will only be adding bloat to the page and causing page caches to have to be purged on configuration changes.
 485          */
 486         static function makeGlobalVariablesScript( $skinName ) {
 487                 global $wgTitle, $wgUser, $wgRequest, $wgArticle, $wgOut, $wgUseAjax, $wgEnableMWSuggest;
 488
 489                 $ns = $wgTitle->getNamespace();
 490                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 491                 $vars = array(
 492                         'wgCanonicalNamespace' => $nsname,
 493                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 494                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 495                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 496                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 497                         'wgTitle' => $wgTitle->getText(),
 498                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 499                         'wgArticleId' => $wgTitle->getArticleId(),
 500                         'wgIsArticle' => $wgOut->isArticle(),
 501                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 502                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 503                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 504                         'wgCategories' => $wgOut->getCategories(),
 505                         'wgBreakFrames' => $wgOut->getFrameOptions() == 'DENY',
 506                 );
 507                 foreach ( $wgTitle->getRestrictionTypes() as $type ) {
 508                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 509                 }
 510                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 511                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 512                 }
 513
 514                 // Allow extensions to add their custom variables to the global JS variables
 515                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 516
 517                 return self::makeVariablesScript( $vars );
 518         }
 519
 520         /**
 521          * To make it harder for someone to slip a user a fake
 522          * user-JavaScript or user-CSS preview, a random token
 523          * is associated with the login session. If it's not
 524          * passed back with the preview request, we won't render
 525          * the code.
 526          *
 527          * @param $action String: 'edit', 'submit' etc.
 528          * @return bool
 529          */
 530         public function userCanPreview( $action ) {
 531                 global $wgRequest, $wgUser;
 532
 533                 if ( $action != 'submit' ) {
 534                         return false;
 535                 }
 536                 if ( !$wgRequest->wasPosted() ) {
 537                         return false;
 538                 }
 539                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 540                         return false;
 541                 }
 542                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 543                         return false;
 544                 }
 545
 546                 return $wgUser->matchEditToken(
 547                         $wgRequest->getVal( 'wpEditToken' ) );
 548         }
 549
 550         /**
 551          * Generated JavaScript action=raw&gen=js
 552          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 553          * nated together.  For some bizarre reason, it does *not* return any
 554          * custom user JS from subpages.  Huh?
 555          *
 556          * There's absolutely no reason to have separate Monobook/Common JSes.
 557          * Any JS that cares can just check the skin variable generated at the
 558          * top.  For now Monobook.js will be maintained, but it should be consi-
 559          * dered deprecated.
 560          *
 561          * @param $skinName String: If set, overrides the skin name
 562          * @return string
 563          */
 564         public function generateUserJs( $skinName = null ) {
 565
 566                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 567
 568                 return '';
 569         }
 570
 571         /**
 572          * Generate user stylesheet for action=raw&gen=css
 573          */
 574         public function generateUserStylesheet() {
 575
 576                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 577
 578                 return '';
 579         }
 580
 581         /**
 582          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 583          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 584          */
 585         protected function reallyGenerateUserStylesheet() {
 586
 587                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 588
 589                 return '';
 590         }
 591
 592         /**
 593          * @private
 594          */
 595         function setupUserCss( OutputPage $out ) {
 596                 global $wgRequest;
 597                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs;
 598
 599                 wfProfileIn( __METHOD__ );
 600
 601                 $this->setupSkinUserCss( $out );
 602                 // Add any extension CSS
 603                 foreach ( $out->getExtStyle() as $url ) {
 604                         $out->addStyle( $url );
 605                 }
 606
 607                 // Per-site custom styles
 608                 if ( $wgUseSiteCss ) {
 609                         $out->addModuleStyles( 'site' );
 610                 }
 611
 612                 // Per-user custom styles
 613                 if ( $wgAllowUserCss ) {
 614                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 615                                 // @FIXME: properly escape the cdata!
 616                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 617                         } else {
 618                                 $out->addModuleStyles( 'user' );
 619                         }
 620                 }
 621
 622                 // Per-user preference styles
 623                 if ( $wgAllowUserCssPrefs ) {
 624                         $out->addModuleStyles( 'user.options' );
 625                 }
 626
 627                 wfProfileOut( __METHOD__ );
 628         }
 629
 630         /**
 631          * Get the query to generate a dynamic stylesheet
 632          *
 633          * @return array
 634          */
 635         public static function getDynamicStylesheetQuery() {
 636                 global $wgSquidMaxage;
 637
 638                 return array(
 639                                 'action' => 'raw',
 640                                 'maxage' => $wgSquidMaxage,
 641                                 'usemsgcache' => 'yes',
 642                                 'ctype' => 'text/css',
 643                                 'smaxage' => $wgSquidMaxage,
 644                         );
 645         }
 646
 647         /**
 648          * Add skin specific stylesheets
 649          * @param $out OutputPage
 650          */
 651         function setupSkinUserCss( OutputPage $out ) {
 652                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 653                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 654                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 655                 $out->addStyle( $this->getStylesheet() );
 656                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 657         }
 658
 659         function getPageClasses( $title ) {
 660                 $numeric = 'ns-' . $title->getNamespace();
 661
 662                 if ( $title->getNamespace() == NS_SPECIAL ) {
 663                         $type = 'ns-special';
 664                 } elseif ( $title->isTalkPage() ) {
 665                         $type = 'ns-talk';
 666                 } else {
 667                         $type = 'ns-subject';
 668                 }
 669
 670                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 671
 672                 return "$numeric $type $name";
 673         }
 674
 675         /**
 676          * This will be called by OutputPage::headElement when it is creating the
 677          * <body> tag, skins can override it if they have a need to add in any
 678          * body attributes or classes of their own.
 679          */
 680         function addToBodyAttributes( $out, &$bodyAttrs ) {
 681                 // does nothing by default
 682         }
 683
 684         /**
 685          * URL to the logo
 686          */
 687         function getLogo() {
 688                 global $wgLogo;
 689                 return $wgLogo;
 690         }
 691
 692         /**
 693          * This will be called immediately after the <body> tag.  Split into
 694          * two functions to make it easier to subclass.
 695          */
 696         function beforeContent() {
 697                 return $this->doBeforeContent();
 698         }
 699
 700         function doBeforeContent() {
 701                 global $wgContLang;
 702                 wfProfileIn( __METHOD__ );
 703
 704                 $s = '';
 705                 $qb = $this->qbSetting();
 706
 707                 $langlinks = $this->otherLanguages();
 708                 if ( $langlinks ) {
 709                         $rows = 2;
 710                         $borderhack = '';
 711                 } else {
 712                         $rows = 1;
 713                         $langlinks = false;
 714                         $borderhack = 'class="top"';
 715                 }
 716
 717                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 718                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 719
 720                 $shove = ( $qb != 0 );
 721                 $left = ( $qb == 1 || $qb == 3 );
 722
 723                 if ( $wgContLang->isRTL() ) {
 724                         $left = !$left;
 725                 }
 726
 727                 if ( !$shove ) {
 728                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 729                                 $this->logoText() . '</td>';
 730                 } elseif ( $left ) {
 731                         $s .= $this->getQuickbarCompensator( $rows );
 732                 }
 733
 734                 $l = $wgContLang->alignStart();
 735                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 736
 737                 $s .= $this->topLinks();
 738                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 739
 740                 $r = $wgContLang->alignEnd();
 741                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 742                 $s .= $this->nameAndLogin();
 743                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 744
 745                 if ( $langlinks ) {
 746                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 747                 }
 748
 749                 if ( $shove && !$left ) { # Right
 750                         $s .= $this->getQuickbarCompensator( $rows );
 751                 }
 752
 753                 $s .= "</tr>\n</table>\n</div>\n";
 754                 $s .= "\n<div id='article'>\n";
 755
 756                 $notice = wfGetSiteNotice();
 757
 758                 if ( $notice ) {
 759                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 760                 }
 761                 $s .= $this->pageTitle();
 762                 $s .= $this->pageSubtitle();
 763                 $s .= $this->getCategories();
 764
 765                 wfProfileOut( __METHOD__ );
 766                 return $s;
 767         }
 768
 769         function getCategoryLinks() {
 770                 global $wgOut, $wgUseCategoryBrowser;
 771                 global $wgContLang, $wgUser;
 772
 773                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 774                         return '';
 775                 }
 776
 777                 # Separator
 778                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 779
 780                 // Use Unicode bidi embedding override characters,
 781                 // to make sure links don't smash each other up in ugly ways.
 782                 $dir = $wgContLang->getDir();
 783                 $embed = "<span dir='$dir'>";
 784                 $pop = '</span>';
 785
 786                 $allCats = $wgOut->getCategoryLinks();
 787                 $s = '';
 788                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 789
 790                 if ( !empty( $allCats['normal'] ) ) {
 791                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 792
 793                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 794                         $s .= '<div id="mw-normal-catlinks">' .
 795                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 796                                 . $colon . $t . '</div>';
 797                 }
 798
 799                 # Hidden categories
 800                 if ( isset( $allCats['hidden'] ) ) {
 801                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 802                                 $class = 'mw-hidden-cats-user-shown';
 803                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 804                                 $class = 'mw-hidden-cats-ns-shown';
 805                         } else {
 806                                 $class = 'mw-hidden-cats-hidden';
 807                         }
 808
 809                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 810                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 811                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 812                                 '</div>';
 813                 }
 814
 815                 # optional 'dmoz-like' category browser. Will be shown under the list
 816                 # of categories an article belong to
 817                 if ( $wgUseCategoryBrowser ) {
 818                         $s .= '<br /><hr />';
 819
 820                         # get a big array of the parents tree
 821                         $parenttree = $this->mTitle->getParentCategoryTree();
 822                         # Skin object passed by reference cause it can not be
 823                         # accessed under the method subfunction drawCategoryBrowser
 824                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 825                         # Clean out bogus first entry and sort them
 826                         unset( $tempout[0] );
 827                         asort( $tempout );
 828                         # Output one per line
 829                         $s .= implode( "<br />\n", $tempout );
 830                 }
 831
 832                 return $s;
 833         }
 834
 835         /**
 836          * Render the array as a serie of links.
 837          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 838          * @param &skin Object: skin passed by reference
 839          * @return String separated by &gt;, terminate with "\n"
 840          */
 841         function drawCategoryBrowser( $tree, &$skin ) {
 842                 $return = '';
 843
 844                 foreach ( $tree as $element => $parent ) {
 845                         if ( empty( $parent ) ) {
 846                                 # element start a new list
 847                                 $return .= "\n";
 848                         } else {
 849                                 # grab the others elements
 850                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 851                         }
 852
 853                         # add our current element to the list
 854                         $eltitle = Title::newFromText( $element );
 855                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 856                 }
 857
 858                 return $return;
 859         }
 860
 861         function getCategories() {
 862                 $catlinks = $this->getCategoryLinks();
 863
 864                 $classes = 'catlinks';
 865
 866                 global $wgOut, $wgUser;
 867
 868                 // Check what we're showing
 869                 $allCats = $wgOut->getCategoryLinks();
 870                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 871                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 872
 873                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 874                         $classes .= ' catlinks-allhidden';
 875                 }
 876
 877                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 878         }
 879
 880         function getQuickbarCompensator( $rows = 1 ) {
 881                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 882         }
 883
 884         /**
 885          * This runs a hook to allow extensions placing their stuff after content
 886          * and article metadata (e.g. categories).
 887          * Note: This function has nothing to do with afterContent().
 888          *
 889          * This hook is placed here in order to allow using the same hook for all
 890          * skins, both the SkinTemplate based ones and the older ones, which directly
 891          * use this class to get their data.
 892          *
 893          * The output of this function gets processed in SkinTemplate::outputPage() for
 894          * the SkinTemplate based skins, all other skins should directly echo it.
 895          *
 896          * Returns an empty string by default, if not changed by any hook function.
 897          */
 898         protected function afterContentHook() {
 899                 $data = '';
 900
 901                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 902                         // adding just some spaces shouldn't toggle the output
 903                         // of the whole <div/>, so we use trim() here
 904                         if ( trim( $data ) != '' ) {
 905                                 // Doing this here instead of in the skins to
 906                                 // ensure that the div has the same ID in all
 907                                 // skins
 908                                 $data = "<div id='mw-data-after-content'>\n" .
 909                                         "\t$data\n" .
 910                                         "</div>\n";
 911                         }
 912                 } else {
 913                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 914                 }
 915
 916                 return $data;
 917         }
 918
 919         /**
 920          * Generate debug data HTML for displaying at the bottom of the main content
 921          * area.
 922          * @return String HTML containing debug data, if enabled (otherwise empty).
 923          */
 924         protected function generateDebugHTML() {
 925                 global $wgShowDebug, $wgOut;
 926
 927                 if ( $wgShowDebug ) {
 928                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 929                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 930                                 $listInternals . "</ul>\n";
 931                 }
 932
 933                 return '';
 934         }
 935
 936         private function formatDebugHTML( $debugText ) {
 937                 $lines = explode( "\n", $debugText );
 938                 $curIdent = 0;
 939                 $ret = '<li>';
 940
 941                 foreach ( $lines as $line ) {
 942                         $display = ltrim( $line );
 943                         $ident = strlen( $line ) - strlen( $display );
 944                         $diff = $ident - $curIdent;
 945
 946                         if ( $display == '' ) {
 947                                 $display = "\xc2\xa0";
 948                         }
 949
 950                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 951                                 $ident = $curIdent;
 952                                 $diff = 0;
 953                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 954                         } else {
 955                                 $display = htmlspecialchars( $display );
 956                         }
 957
 958                         if ( $diff < 0 ) {
 959                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 960                         } elseif ( $diff == 0 ) {
 961                                 $ret .= "</li><li>\n";
 962                         } else {
 963                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 964                         }
 965                         $ret .= $display . "\n";
 966
 967                         $curIdent = $ident;
 968                 }
 969
 970                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 971
 972                 return $ret;
 973         }
 974
 975         /**
 976          * This gets called shortly before the </body> tag.
 977          * @return String HTML to be put before </body>
 978          */
 979         function afterContent() {
 980                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 981                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 982         }
 983
 984         /**
 985          * This gets called shortly before the </body> tag.
 986          * @param $out OutputPage object
 987          * @return String HTML-wrapped JS code to be put before </body>
 988          */
 989         function bottomScripts( $out ) {
 990                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 991                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 992
 993                 return $bottomScriptText;
 994         }
 995
 996         /** @return string Retrievied from HTML text */
 997         function printSource() {
 998                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 999                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
1000         }
1001
1002         function printFooter() {
1003                 return "<p>" .  $this->printSource() .
1004                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1005         }
1006
1007         /** overloaded by derived classes */
1008         function doAfterContent() {
1009                 return '</div></div>';
1010         }
1011
1012         function pageTitleLinks() {
1013                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1014
1015                 $oldid = $wgRequest->getVal( 'oldid' );
1016                 $diff = $wgRequest->getVal( 'diff' );
1017                 $action = $wgRequest->getText( 'action' );
1018
1019                 $s[] = $this->printableLink();
1020                 $disclaimer = $this->disclaimerLink(); # may be empty
1021
1022                 if ( $disclaimer ) {
1023                         $s[] = $disclaimer;
1024                 }
1025
1026                 $privacy = $this->privacyLink(); # may be empty too
1027
1028                 if ( $privacy ) {
1029                         $s[] = $privacy;
1030                 }
1031
1032                 if ( $wgOut->isArticleRelated() ) {
1033                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1034                                 $name = $this->mTitle->getDBkey();
1035                                 $image = wfFindFile( $this->mTitle );
1036
1037                                 if ( $image ) {
1038                                         $link = htmlspecialchars( $image->getURL() );
1039                                         $style = $this->getInternalLinkAttributes( $link, $name );
1040                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1041                                 }
1042                         }
1043                 }
1044
1045                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1046                         $s[] .= $this->link(
1047                                         $this->mTitle,
1048                                         wfMsg( 'currentrev' ),
1049                                         array(),
1050                                         array(),
1051                                         array( 'known', 'noclasses' )
1052                         );
1053                 }
1054
1055                 if ( $wgUser->getNewtalk() ) {
1056                         # do not show "You have new messages" text when we are viewing our
1057                         # own talk page
1058                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1059                                 $tl = $this->link(
1060                                         $wgUser->getTalkPage(),
1061                                         wfMsgHtml( 'newmessageslink' ),
1062                                         array(),
1063                                         array( 'redirect' => 'no' ),
1064                                         array( 'known', 'noclasses' )
1065                                 );
1066
1067                                 $dl = $this->link(
1068                                         $wgUser->getTalkPage(),
1069                                         wfMsgHtml( 'newmessagesdifflink' ),
1070                                         array(),
1071                                         array( 'diff' => 'cur' ),
1072                                         array( 'known', 'noclasses' )
1073                                 );
1074                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1075                                 # disable caching
1076                                 $wgOut->setSquidMaxage( 0 );
1077                                 $wgOut->enableClientCache( false );
1078                         }
1079                 }
1080
1081                 $undelete = $this->getUndeleteLink();
1082
1083                 if ( !empty( $undelete ) ) {
1084                         $s[] = $undelete;
1085                 }
1086
1087                 return $wgLang->pipeList( $s );
1088         }
1089
1090         function getUndeleteLink() {
1091                 global $wgUser, $wgLang, $wgRequest;
1092
1093                 $action = $wgRequest->getVal( 'action', 'view' );
1094
1095                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1096                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1097                         $n = $this->mTitle->isDeleted();
1098
1099                         if ( $n ) {
1100                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1101                                         $msg = 'thisisdeleted';
1102                                 } else {
1103                                         $msg = 'viewdeleted';
1104                                 }
1105
1106                                 return wfMsg(
1107                                         $msg,
1108                                         $this->link(
1109                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1110                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1111                                                 array(),
1112                                                 array(),
1113                                                 array( 'known', 'noclasses' )
1114                                         )
1115                                 );
1116                         }
1117                 }
1118
1119                 return '';
1120         }
1121
1122         function printableLink() {
1123                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1124
1125                 $s = array();
1126
1127                 if ( !$wgOut->isPrintable() ) {
1128                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1129                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1130                 }
1131
1132                 if ( $wgOut->isSyndicated() ) {
1133                         foreach ( $wgFeedClasses as $format => $class ) {
1134                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1135                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1136                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1137                         }
1138                 }
1139                 return $wgLang->pipeList( $s );
1140         }
1141
1142         /**
1143          * Gets the h1 element with the page title.
1144          * @return string
1145          */
1146         function pageTitle() {
1147                 global $wgOut;
1148                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1149                 return $s;
1150         }
1151
1152         function pageSubtitle() {
1153                 global $wgOut;
1154
1155                 $sub = $wgOut->getSubtitle();
1156
1157                 if ( $sub == '' ) {
1158                         global $wgExtraSubtitle;
1159                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1160                 }
1161
1162                 $subpages = $this->subPageSubtitle();
1163                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1164                 $s = "<p class='subtitle'>{$sub}</p>\n";
1165
1166                 return $s;
1167         }
1168
1169         function subPageSubtitle() {
1170                 $subpages = '';
1171
1172                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this ) ) ) {
1173                         return $subpages;
1174                 }
1175
1176                 global $wgOut;
1177
1178                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1179                         $ptext = $this->mTitle->getPrefixedText();
1180                         if ( preg_match( '/\//', $ptext ) ) {
1181                                 $links = explode( '/', $ptext );
1182                                 array_pop( $links );
1183                                 $c = 0;
1184                                 $growinglink = '';
1185                                 $display = '';
1186
1187                                 foreach ( $links as $link ) {
1188                                         $growinglink .= $link;
1189                                         $display .= $link;
1190                                         $linkObj = Title::newFromText( $growinglink );
1191
1192                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1193                                                 $getlink = $this->link(
1194                                                         $linkObj,
1195                                                         htmlspecialchars( $display ),
1196                                                         array(),
1197                                                         array(),
1198                                                         array( 'known', 'noclasses' )
1199                                                 );
1200
1201                                                 $c++;
1202
1203                                                 if ( $c > 1 ) {
1204                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1205                                                 } else  {
1206                                                         $subpages .= '&lt; ';
1207                                                 }
1208
1209                                                 $subpages .= $getlink;
1210                                                 $display = '';
1211                                         } else {
1212                                                 $display .= '/';
1213                                         }
1214                                         $growinglink .= '/';
1215                                 }
1216                         }
1217                 }
1218
1219                 return $subpages;
1220         }
1221
1222         /**
1223          * Returns true if the IP should be shown in the header
1224          */
1225         function showIPinHeader() {
1226                 global $wgShowIPinHeader;
1227                 return $wgShowIPinHeader && session_id() != '';
1228         }
1229
1230         function nameAndLogin() {
1231                 global $wgUser, $wgLang, $wgContLang;
1232
1233                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1234
1235                 $ret = '';
1236
1237                 if ( $wgUser->isAnon() ) {
1238                         if ( $this->showIPinHeader() ) {
1239                                 $name = wfGetIP();
1240
1241                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1242                                         $wgLang->getNsText( NS_TALK ) );
1243
1244                                 $ret .= "$name ($talkLink)";
1245                         } else {
1246                                 $ret .= wfMsg( 'notloggedin' );
1247                         }
1248
1249                         $returnTo = $this->mTitle->getPrefixedDBkey();
1250                         $query = array();
1251
1252                         if ( $logoutPage != $returnTo ) {
1253                                 $query['returnto'] = $returnTo;
1254                         }
1255
1256                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1257                                 ? 'nav-login-createaccount'
1258                                 : 'login';
1259                         $ret .= "\n<br />" . $this->link(
1260                                 SpecialPage::getTitleFor( 'Userlogin' ),
1261                                 wfMsg( $loginlink ), array(), $query
1262                         );
1263                 } else {
1264                         $returnTo = $this->mTitle->getPrefixedDBkey();
1265                         $talkLink = $this->link( $wgUser->getTalkPage(),
1266                                 $wgLang->getNsText( NS_TALK ) );
1267
1268                         $ret .= $this->link( $wgUser->getUserPage(),
1269                                 htmlspecialchars( $wgUser->getName() ) );
1270                         $ret .= " ($talkLink)<br />";
1271                         $ret .= $wgLang->pipeList( array(
1272                                 $this->link(
1273                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1274                                         array(), array( 'returnto' => $returnTo )
1275                                 ),
1276                                 $this->specialLink( 'Preferences' ),
1277                         ) );
1278                 }
1279
1280                 $ret = $wgLang->pipeList( array(
1281                         $ret,
1282                         $this->link(
1283                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1284                                 wfMsg( 'help' )
1285                         ),
1286                 ) );
1287
1288                 return $ret;
1289         }
1290
1291         function getSearchLink() {
1292                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1293                 return $searchPage->getLocalURL();
1294         }
1295
1296         function escapeSearchLink() {
1297                 return htmlspecialchars( $this->getSearchLink() );
1298         }
1299
1300         function searchForm() {
1301                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1302
1303                 $search = $wgRequest->getText( 'search' );
1304
1305                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1306                   . $this->escapeSearchLink() . "\">\n"
1307                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1308                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1309                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1310
1311                 if ( $wgUseTwoButtonsSearchForm ) {
1312                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1313                 } else {
1314                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1315                 }
1316
1317                 $s .= '</form>';
1318
1319                 // Ensure unique id's for search boxes made after the first
1320                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1321
1322                 return $s;
1323         }
1324
1325         function topLinks() {
1326                 global $wgOut;
1327
1328                 $s = array(
1329                         $this->mainPageLink(),
1330                         $this->specialLink( 'Recentchanges' )
1331                 );
1332
1333                 if ( $wgOut->isArticleRelated() ) {
1334                         $s[] = $this->editThisPage();
1335                         $s[] = $this->historyLink();
1336                 }
1337
1338                 # Many people don't like this dropdown box
1339                 # $s[] = $this->specialPagesList();
1340
1341                 if ( $this->variantLinks() ) {
1342                         $s[] = $this->variantLinks();
1343                 }
1344
1345                 if ( $this->extensionTabLinks() ) {
1346                         $s[] = $this->extensionTabLinks();
1347                 }
1348
1349                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1350                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1351         }
1352
1353         /**
1354          * Compatibility for extensions adding functionality through tabs.
1355          * Eventually these old skins should be replaced with SkinTemplate-based
1356          * versions, sigh...
1357          * @return string
1358          */
1359         function extensionTabLinks() {
1360                 $tabs = array();
1361                 $out = '';
1362                 $s = array();
1363                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1364                 foreach ( $tabs as $tab ) {
1365                         $s[] = Xml::element( 'a',
1366                                 array( 'href' => $tab['href'] ),
1367                                 $tab['text'] );
1368                 }
1369
1370                 if ( count( $s ) ) {
1371                         global $wgLang;
1372
1373                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1374                         $out .= $wgLang->pipeList( $s );
1375                 }
1376
1377                 return $out;
1378         }
1379
1380         /**
1381          * Language/charset variant links for classic-style skins
1382          * @return string
1383          */
1384         function variantLinks() {
1385                 $s = '';
1386
1387                 /* show links to different language variants */
1388                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1389
1390                 $variants = $wgContLang->getVariants();
1391
1392                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1393                         foreach ( $variants as $code ) {
1394                                 $varname = $wgContLang->getVariantname( $code );
1395
1396                                 if ( $varname == 'disable' ) {
1397                                         continue;
1398                                 }
1399                                 $s = $wgLang->pipeList( array(
1400                                         $s,
1401                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1402                                 ) );
1403                         }
1404                 }
1405
1406                 return $s;
1407         }
1408
1409         function bottomLinks() {
1410                 global $wgOut, $wgUser, $wgUseTrackbacks;
1411                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1412
1413                 $s = '';
1414                 if ( $wgOut->isArticleRelated() ) {
1415                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1416
1417                         if ( $wgUser->isLoggedIn() ) {
1418                                 $element[] = $this->watchThisPage();
1419                         }
1420
1421                         $element[] = $this->talkLink();
1422                         $element[] = $this->historyLink();
1423                         $element[] = $this->whatLinksHere();
1424                         $element[] = $this->watchPageLinksLink();
1425
1426                         if ( $wgUseTrackbacks ) {
1427                                 $element[] = $this->trackbackLink();
1428                         }
1429
1430                         if (
1431                                 $this->mTitle->getNamespace() == NS_USER ||
1432                                 $this->mTitle->getNamespace() == NS_USER_TALK
1433                         ) {
1434                                 $id = User::idFromName( $this->mTitle->getText() );
1435                                 $ip = User::isIP( $this->mTitle->getText() );
1436
1437                                 # Both anons and non-anons have contributions list
1438                                 if ( $id || $ip ) {
1439                                         $element[] = $this->userContribsLink();
1440                                 }
1441
1442                                 if ( $this->showEmailUser( $id ) ) {
1443                                         $element[] = $this->emailUserLink();
1444                                 }
1445                         }
1446
1447                         $s = implode( $element, $sep );
1448
1449                         if ( $this->mTitle->getArticleId() ) {
1450                                 $s .= "\n<br />";
1451
1452                                 // Delete/protect/move links for privileged users
1453                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1454                                         $s .= $this->deleteThisPage();
1455                                 }
1456
1457                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1458                                         $s .= $sep . $this->protectThisPage();
1459                                 }
1460
1461                                 if ( $wgUser->isAllowed( 'move' ) ) {
1462                                         $s .= $sep . $this->moveThisPage();
1463                                 }
1464                         }
1465
1466                         $s .= "<br />\n" . $this->otherLanguages();
1467                 }
1468
1469                 return $s;
1470         }
1471
1472         function pageStats() {
1473                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1474                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1475
1476                 $oldid = $wgRequest->getVal( 'oldid' );
1477                 $diff = $wgRequest->getVal( 'diff' );
1478
1479                 if ( !$wgOut->isArticle() ) {
1480                         return '';
1481                 }
1482
1483                 if ( !$wgArticle instanceof Article ) {
1484                         return '';
1485                 }
1486
1487                 if ( isset( $oldid ) || isset( $diff ) ) {
1488                         return '';
1489                 }
1490
1491                 if ( 0 == $wgArticle->getID() ) {
1492                         return '';
1493                 }
1494
1495                 $s = '';
1496
1497                 if ( !$wgDisableCounters ) {
1498                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1499
1500                         if ( $count ) {
1501                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1502                         }
1503                 }
1504
1505                 if ( $wgMaxCredits != 0 ) {
1506                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1507                 } else {
1508                         $s .= $this->lastModified();
1509                 }
1510
1511                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1512                         $dbr = wfGetDB( DB_SLAVE );
1513                         $res = $dbr->select(
1514                                 'watchlist',
1515                                 array( 'COUNT(*) AS n' ),
1516                                 array(
1517                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1518                                         'wl_namespace' => $this->mTitle->getNamespace()
1519                                 ),
1520                                 __METHOD__
1521                         );
1522                         $x = $dbr->fetchObject( $res );
1523
1524                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1525                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1526                         );
1527                 }
1528
1529                 return $s . ' ' .  $this->getCopyright();
1530         }
1531
1532         function getCopyright( $type = 'detect' ) {
1533                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1534
1535                 if ( $type == 'detect' ) {
1536                         $diff = $wgRequest->getVal( 'diff' );
1537                         $isCur = $wgArticle && $wgArticle->isCurrent();
1538
1539                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1540                                 $type = 'history';
1541                         } else {
1542                                 $type = 'normal';
1543                         }
1544                 }
1545
1546                 if ( $type == 'history' ) {
1547                         $msg = 'history_copyright';
1548                 } else {
1549                         $msg = 'copyright';
1550                 }
1551
1552                 $out = '';
1553
1554                 if ( $wgRightsPage ) {
1555                         $title = Title::newFromText( $wgRightsPage );
1556                         $link = $this->linkKnown( $title, $wgRightsText );
1557                 } elseif ( $wgRightsUrl ) {
1558                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1559                 } elseif ( $wgRightsText ) {
1560                         $link = $wgRightsText;
1561                 } else {
1562                         # Give up now
1563                         return $out;
1564                 }
1565
1566                 // Allow for site and per-namespace customization of copyright notice.
1567                 $forContent = true;
1568
1569                 wfRunHooks( 'SkinCopyrightFooter', array( $this->mTitle, $type, &$msg, &$link, &$forContent ) );
1570
1571                 if ( $forContent ) {
1572                         $out .= wfMsgForContent( $msg, $link );
1573                 } else {
1574                         $out .= wfMsg( $msg, $link );
1575                 }
1576
1577                 return $out;
1578         }
1579
1580         function getCopyrightIcon() {
1581                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1582
1583                 $out = '';
1584
1585                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1586                         $out = $wgCopyrightIcon;
1587                 } elseif ( $wgRightsIcon ) {
1588                         $icon = htmlspecialchars( $wgRightsIcon );
1589
1590                         if ( $wgRightsUrl ) {
1591                                 $url = htmlspecialchars( $wgRightsUrl );
1592                                 $out .= '<a href="' . $url . '">';
1593                         }
1594
1595                         $text = htmlspecialchars( $wgRightsText );
1596                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1597
1598                         if ( $wgRightsUrl ) {
1599                                 $out .= '</a>';
1600                         }
1601                 }
1602
1603                 return $out;
1604         }
1605
1606         /**
1607          * Gets the powered by MediaWiki icon.
1608          * @return string
1609          */
1610         function getPoweredBy() {
1611                 global $wgStylePath;
1612
1613                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1614                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1615                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
1616                 return $text;
1617         }
1618
1619         function lastModified() {
1620                 global $wgLang, $wgArticle;
1621
1622                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1623                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1624                 } else {
1625                         $timestamp = $wgArticle->getTimestamp();
1626                 }
1627
1628                 if ( $timestamp ) {
1629                         $d = $wgLang->date( $timestamp, true );
1630                         $t = $wgLang->time( $timestamp, true );
1631                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1632                 } else {
1633                         $s = '';
1634                 }
1635
1636                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1637                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1638                 }
1639
1640                 return $s;
1641         }
1642
1643         function logoText( $align = '' ) {
1644                 if ( $align != '' ) {
1645                         $a = " align='{$align}'";
1646                 } else {
1647                         $a = '';
1648                 }
1649
1650                 $mp = wfMsg( 'mainpage' );
1651                 $mptitle = Title::newMainPage();
1652                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1653
1654                 $logourl = $this->getLogo();
1655                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1656
1657                 return $s;
1658         }
1659
1660         /**
1661          * Show a drop-down box of special pages
1662          */
1663         function specialPagesList() {
1664                 global $wgContLang, $wgServer, $wgRedirectScript;
1665
1666                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1667
1668                 foreach ( $pages as $name => $page ) {
1669                         $pages[$name] = $page->getDescription();
1670                 }
1671
1672                 $go = wfMsg( 'go' );
1673                 $sp = wfMsg( 'specialpages' );
1674                 $spp = $wgContLang->specialPage( 'Specialpages' );
1675
1676                 $s = '<form id="specialpages" method="get" ' .
1677                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1678                 $s .= "<select name=\"wpDropdown\">\n";
1679                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1680
1681
1682                 foreach ( $pages as $name => $desc ) {
1683                         $p = $wgContLang->specialPage( $name );
1684                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1685                 }
1686
1687                 $s .= "</select>\n";
1688                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1689                 $s .= "</form>\n";
1690
1691                 return $s;
1692         }
1693
1694         /**
1695          * Renders a $wgFooterIcons icon acording to the method's arguments
1696          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1697          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1698          */
1699         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1700                 if ( is_string( $icon ) ) {
1701                         $html = $icon;
1702                 } else { // Assuming array
1703                         $url = $icon["url"];
1704                         unset( $icon["url"] );
1705                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1706                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1707                         } else {
1708                                 $html = htmlspecialchars( $icon["alt"] );
1709                         }
1710                         if ( $url ) {
1711                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1712                         }
1713                 }
1714                 return $html;
1715         }
1716
1717         /**
1718          * Gets the link to the wiki's main page.
1719          * @return string
1720          */
1721         function mainPageLink() {
1722                 $s = $this->link(
1723                         Title::newMainPage(),
1724                         wfMsg( 'mainpage' ),
1725                         array(),
1726                         array(),
1727                         array( 'known', 'noclasses' )
1728                 );
1729
1730                 return $s;
1731         }
1732
1733         public function footerLink( $desc, $page ) {
1734                 // if the link description has been set to "-" in the default language,
1735                 if ( wfMsgForContent( $desc )  == '-' ) {
1736                         // then it is disabled, for all languages.
1737                         return '';
1738                 } else {
1739                         // Otherwise, we display the link for the user, described in their
1740                         // language (which may or may not be the same as the default language),
1741                         // but we make the link target be the one site-wide page.
1742                         $title = Title::newFromText( wfMsgForContent( $page ) );
1743
1744                         return $this->linkKnown(
1745                                 $title,
1746                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1747                         );
1748                 }
1749         }
1750
1751         /**
1752          * Gets the link to the wiki's privacy policy page.
1753          */
1754         function privacyLink() {
1755                 return $this->footerLink( 'privacy', 'privacypage' );
1756         }
1757
1758         /**
1759          * Gets the link to the wiki's about page.
1760          */
1761         function aboutLink() {
1762                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1763         }
1764
1765         /**
1766          * Gets the link to the wiki's general disclaimers page.
1767          */
1768         function disclaimerLink() {
1769                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1770         }
1771
1772         function editThisPage() {
1773                 global $wgOut;
1774
1775                 if ( !$wgOut->isArticleRelated() ) {
1776                         $s = wfMsg( 'protectedpage' );
1777                 } else {
1778                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1779                                 $t = wfMsg( 'editthispage' );
1780                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1781                                 $t = wfMsg( 'create-this-page' );
1782                         } else {
1783                                 $t = wfMsg( 'viewsource' );
1784                         }
1785
1786                         $s = $this->link(
1787                                 $this->mTitle,
1788                                 $t,
1789                                 array(),
1790                                 $this->editUrlOptions(),
1791                                 array( 'known', 'noclasses' )
1792                         );
1793                 }
1794
1795                 return $s;
1796         }
1797
1798         /**
1799          * Return URL options for the 'edit page' link.
1800          * This may include an 'oldid' specifier, if the current page view is such.
1801          *
1802          * @return array
1803          * @private
1804          */
1805         function editUrlOptions() {
1806                 global $wgArticle;
1807
1808                 $options = array( 'action' => 'edit' );
1809
1810                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1811                         $options['oldid'] = intval( $this->mRevisionId );
1812                 }
1813
1814                 return $options;
1815         }
1816
1817         function deleteThisPage() {
1818                 global $wgUser, $wgRequest;
1819
1820                 $diff = $wgRequest->getVal( 'diff' );
1821
1822                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1823                         $t = wfMsg( 'deletethispage' );
1824
1825                         $s = $this->link(
1826                                 $this->mTitle,
1827                                 $t,
1828                                 array(),
1829                                 array( 'action' => 'delete' ),
1830                                 array( 'known', 'noclasses' )
1831                         );
1832                 } else {
1833                         $s = '';
1834                 }
1835
1836                 return $s;
1837         }
1838
1839         function protectThisPage() {
1840                 global $wgUser, $wgRequest;
1841
1842                 $diff = $wgRequest->getVal( 'diff' );
1843
1844                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1845                         if ( $this->mTitle->isProtected() ) {
1846                                 $text = wfMsg( 'unprotectthispage' );
1847                                 $query = array( 'action' => 'unprotect' );
1848                         } else {
1849                                 $text = wfMsg( 'protectthispage' );
1850                                 $query = array( 'action' => 'protect' );
1851                         }
1852
1853                         $s = $this->link(
1854                                 $this->mTitle,
1855                                 $text,
1856                                 array(),
1857                                 $query,
1858                                 array( 'known', 'noclasses' )
1859                         );
1860                 } else {
1861                         $s = '';
1862                 }
1863
1864                 return $s;
1865         }
1866
1867         function watchThisPage() {
1868                 global $wgOut;
1869                 ++$this->mWatchLinkNum;
1870
1871                 if ( $wgOut->isArticleRelated() ) {
1872                         if ( $this->mTitle->userIsWatching() ) {
1873                                 $text = wfMsg( 'unwatchthispage' );
1874                                 $query = array( 'action' => 'unwatch' );
1875                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1876                         } else {
1877                                 $text = wfMsg( 'watchthispage' );
1878                                 $query = array( 'action' => 'watch' );
1879                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1880                         }
1881
1882                         $s = $this->link(
1883                                 $this->mTitle,
1884                                 $text,
1885                                 array( 'id' => $id ),
1886                                 $query,
1887                                 array( 'known', 'noclasses' )
1888                         );
1889                 } else {
1890                         $s = wfMsg( 'notanarticle' );
1891                 }
1892
1893                 return $s;
1894         }
1895
1896         function moveThisPage() {
1897                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1898                         return $this->link(
1899                                 SpecialPage::getTitleFor( 'Movepage' ),
1900                                 wfMsg( 'movethispage' ),
1901                                 array(),
1902                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1903                                 array( 'known', 'noclasses' )
1904                         );
1905                 } else {
1906                         // no message if page is protected - would be redundant
1907                         return '';
1908                 }
1909         }
1910
1911         function historyLink() {
1912                 return $this->link(
1913                         $this->mTitle,
1914                         wfMsgHtml( 'history' ),
1915                         array( 'rel' => 'archives' ),
1916                         array( 'action' => 'history' )
1917                 );
1918         }
1919
1920         function whatLinksHere() {
1921                 return $this->link(
1922                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1923                         wfMsgHtml( 'whatlinkshere' ),
1924                         array(),
1925                         array(),
1926                         array( 'known', 'noclasses' )
1927                 );
1928         }
1929
1930         function userContribsLink() {
1931                 return $this->link(
1932                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1933                         wfMsgHtml( 'contributions' ),
1934                         array(),
1935                         array(),
1936                         array( 'known', 'noclasses' )
1937                 );
1938         }
1939
1940         function showEmailUser( $id ) {
1941                 global $wgUser;
1942                 $targetUser = User::newFromId( $id );
1943                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1944                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1945         }
1946
1947         function emailUserLink() {
1948                 return $this->link(
1949                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1950                         wfMsg( 'emailuser' ),
1951                         array(),
1952                         array(),
1953                         array( 'known', 'noclasses' )
1954                 );
1955         }
1956
1957         function watchPageLinksLink() {
1958                 global $wgOut;
1959
1960                 if ( !$wgOut->isArticleRelated() ) {
1961                         return '(' . wfMsg( 'notanarticle' ) . ')';
1962                 } else {
1963                         return $this->link(
1964                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1965                                 wfMsg( 'recentchangeslinked-toolbox' ),
1966                                 array(),
1967                                 array(),
1968                                 array( 'known', 'noclasses' )
1969                         );
1970                 }
1971         }
1972
1973         function trackbackLink() {
1974                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1975                         . wfMsg( 'trackbacklink' ) . '</a>';
1976         }
1977
1978         function otherLanguages() {
1979                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1980
1981                 if ( $wgHideInterlanguageLinks ) {
1982                         return '';
1983                 }
1984
1985                 $a = $wgOut->getLanguageLinks();
1986
1987                 if ( 0 == count( $a ) ) {
1988                         return '';
1989                 }
1990
1991                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1992                 $first = true;
1993
1994                 if ( $wgContLang->isRTL() ) {
1995                         $s .= '<span dir="LTR">';
1996                 }
1997
1998                 foreach ( $a as $l ) {
1999                         if ( !$first ) {
2000                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
2001                         }
2002
2003                         $first = false;
2004
2005                         $nt = Title::newFromText( $l );
2006                         $url = $nt->escapeFullURL();
2007                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
2008                         $title = htmlspecialchars( $nt->getText() );
2009
2010                         if ( $text == '' ) {
2011                                 $text = $l;
2012                         }
2013
2014                         $style = $this->getExternalLinkAttributes();
2015                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
2016                 }
2017
2018                 if ( $wgContLang->isRTL() ) {
2019                         $s .= '</span>';
2020                 }
2021
2022                 return $s;
2023         }
2024
2025         function talkLink() {
2026                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
2027                         # No discussion links for special pages
2028                         return '';
2029                 }
2030
2031                 $linkOptions = array();
2032
2033                 if ( $this->mTitle->isTalkPage() ) {
2034                         $link = $this->mTitle->getSubjectPage();
2035                         switch( $link->getNamespace() ) {
2036                                 case NS_MAIN:
2037                                         $text = wfMsg( 'articlepage' );
2038                                         break;
2039                                 case NS_USER:
2040                                         $text = wfMsg( 'userpage' );
2041                                         break;
2042                                 case NS_PROJECT:
2043                                         $text = wfMsg( 'projectpage' );
2044                                         break;
2045                                 case NS_FILE:
2046                                         $text = wfMsg( 'imagepage' );
2047                                         # Make link known if image exists, even if the desc. page doesn't.
2048                                         if ( wfFindFile( $link ) )
2049                                                 $linkOptions[] = 'known';
2050                                         break;
2051                                 case NS_MEDIAWIKI:
2052                                         $text = wfMsg( 'mediawikipage' );
2053                                         break;
2054                                 case NS_TEMPLATE:
2055                                         $text = wfMsg( 'templatepage' );
2056                                         break;
2057                                 case NS_HELP:
2058                                         $text = wfMsg( 'viewhelppage' );
2059                                         break;
2060                                 case NS_CATEGORY:
2061                                         $text = wfMsg( 'categorypage' );
2062                                         break;
2063                                 default:
2064                                         $text = wfMsg( 'articlepage' );
2065                         }
2066                 } else {
2067                         $link = $this->mTitle->getTalkPage();
2068                         $text = wfMsg( 'talkpage' );
2069                 }
2070
2071                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
2072
2073                 return $s;
2074         }
2075
2076         function commentLink() {
2077                 global $wgOut;
2078
2079                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
2080                         return '';
2081                 }
2082
2083                 # __NEWSECTIONLINK___ changes behaviour here
2084                 # If it is present, the link points to this page, otherwise
2085                 # it points to the talk page
2086                 if ( $this->mTitle->isTalkPage() ) {
2087                         $title = $this->mTitle;
2088                 } elseif ( $wgOut->showNewSectionLink() ) {
2089                         $title = $this->mTitle;
2090                 } else {
2091                         $title = $this->mTitle->getTalkPage();
2092                 }
2093
2094                 return $this->link(
2095                         $title,
2096                         wfMsg( 'postcomment' ),
2097                         array(),
2098                         array(
2099                                 'action' => 'edit',
2100                                 'section' => 'new'
2101                         ),
2102                         array( 'known', 'noclasses' )
2103                 );
2104         }
2105
2106         function getUploadLink() {
2107                 global $wgUploadNavigationUrl;
2108
2109                 if ( $wgUploadNavigationUrl ) {
2110                         # Using an empty class attribute to avoid automatic setting of "external" class
2111                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
2112                 } else {
2113                         return $this->link(
2114                                 SpecialPage::getTitleFor( 'Upload' ),
2115                                 wfMsgHtml( 'upload' ),
2116                                 array(),
2117                                 array(),
2118                                 array( 'known', 'noclasses' )
2119                         );
2120                 }
2121         }
2122
2123         /**
2124          * Return a fully resolved style path url to images or styles stored in the common 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 getCommonStylePath( $name ) {
2131                 global $wgStylePath, $wgStyleVersion;
2132                 return "$wgStylePath/common/$name?$wgStyleVersion";
2133         }
2134
2135         /**
2136          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
2137          * This method returns a url resolved using the configured skin style path
2138          * and includes the style version inside of the url.
2139          * @param $name String: The name or path of a skin resource file
2140          * @return String The fully resolved style path url including styleversion
2141          */
2142         function getSkinStylePath( $name ) {
2143                 global $wgStylePath, $wgStyleVersion;
2144                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
2145         }
2146
2147         /* these are used extensively in SkinTemplate, but also some other places */
2148         static function makeMainPageUrl( $urlaction = '' ) {
2149                 $title = Title::newMainPage();
2150                 self::checkTitle( $title, '' );
2151
2152                 return $title->getLocalURL( $urlaction );
2153         }
2154
2155         static function makeSpecialUrl( $name, $urlaction = '' ) {
2156                 $title = SpecialPage::getTitleFor( $name );
2157                 return $title->getLocalURL( $urlaction );
2158         }
2159
2160         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2161                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2162                 return $title->getLocalURL( $urlaction );
2163         }
2164
2165         static function makeI18nUrl( $name, $urlaction = '' ) {
2166                 $title = Title::newFromText( wfMsgForContent( $name ) );
2167                 self::checkTitle( $title, $name );
2168                 return $title->getLocalURL( $urlaction );
2169         }
2170
2171         static function makeUrl( $name, $urlaction = '' ) {
2172                 $title = Title::newFromText( $name );
2173                 self::checkTitle( $title, $name );
2174
2175                 return $title->getLocalURL( $urlaction );
2176         }
2177
2178         /**
2179          * If url string starts with http, consider as external URL, else
2180          * internal
2181          */
2182         static function makeInternalOrExternalUrl( $name ) {
2183                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2184                         return $name;
2185                 } else {
2186                         return self::makeUrl( $name );
2187                 }
2188         }
2189
2190         # this can be passed the NS number as defined in Language.php
2191         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2192                 $title = Title::makeTitleSafe( $namespace, $name );
2193                 self::checkTitle( $title, $name );
2194
2195                 return $title->getLocalURL( $urlaction );
2196         }
2197
2198         /* these return an array with the 'href' and boolean 'exists' */
2199         static function makeUrlDetails( $name, $urlaction = '' ) {
2200                 $title = Title::newFromText( $name );
2201                 self::checkTitle( $title, $name );
2202
2203                 return array(
2204                         'href' => $title->getLocalURL( $urlaction ),
2205                         'exists' => $title->getArticleID() != 0,
2206                 );
2207         }
2208
2209         /**
2210          * Make URL details where the article exists (or at least it's convenient to think so)
2211          */
2212         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2213                 $title = Title::newFromText( $name );
2214                 self::checkTitle( $title, $name );
2215
2216                 return array(
2217                         'href' => $title->getLocalURL( $urlaction ),
2218                         'exists' => true
2219                 );
2220         }
2221
2222         # make sure we have some title to operate on
2223         static function checkTitle( &$title, $name ) {
2224                 if ( !is_object( $title ) ) {
2225                         $title = Title::newFromText( $name );
2226                         if ( !is_object( $title ) ) {
2227                                 $title = Title::newFromText( '--error: link target missing--' );
2228                         }
2229                 }
2230         }
2231
2232         /**
2233          * Build an array that represents the sidebar(s), the navigation bar among them
2234          *
2235          * @return array
2236          */
2237         function buildSidebar() {
2238                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2239                 global $wgLang;
2240                 wfProfileIn( __METHOD__ );
2241
2242                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2243
2244                 if ( $wgEnableSidebarCache ) {
2245                         $cachedsidebar = $parserMemc->get( $key );
2246                         if ( $cachedsidebar ) {
2247                                 wfProfileOut( __METHOD__ );
2248                                 return $cachedsidebar;
2249                         }
2250                 }
2251
2252                 $bar = array();
2253                 $this->addToSidebar( $bar, 'sidebar' );
2254
2255                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2256                 if ( $wgEnableSidebarCache ) {
2257                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2258                 }
2259
2260                 wfProfileOut( __METHOD__ );
2261                 return $bar;
2262         }
2263         /**
2264          * Add content from a sidebar system message
2265          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2266          *
2267          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2268          *
2269          * @param &$bar array
2270          * @param $message String
2271          */
2272         function addToSidebar( &$bar, $message ) {
2273                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2274         }
2275
2276         /**
2277          * Add content from plain text
2278          * @since 1.17
2279          * @param &$bar array
2280          * @param $text string
2281          */
2282         function addToSidebarPlain( &$bar, $text ) {
2283                 $lines = explode( "\n", $text );
2284                 $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.
2285
2286                 $heading = '';
2287
2288                 foreach ( $lines as $line ) {
2289                         if ( strpos( $line, '*' ) !== 0 ) {
2290                                 continue;
2291                         }
2292
2293                         if ( strpos( $line, '**' ) !== 0 ) {
2294                                 $heading = trim( $line, '* ' );
2295                                 if ( !array_key_exists( $heading, $bar ) ) {
2296                                         $bar[$heading] = array();
2297                                 }
2298                         } else {
2299                                 $line = trim( $line, '* ' );
2300
2301                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2302                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2303                                         $link = wfMsgForContent( $line[0] );
2304
2305                                         if ( $link == '-' ) {
2306                                                 continue;
2307                                         }
2308
2309                                         $text = wfMsgExt( $line[1], 'parsemag' );
2310
2311                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2312                                                 $text = $line[1];
2313                                         }
2314
2315                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2316                                                 $link = $line[0];
2317                                         }
2318
2319                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2320                                                 $href = $link;
2321                                         } else {
2322                                                 $title = Title::newFromText( $link );
2323
2324                                                 if ( $title ) {
2325                                                         $title = $title->fixSpecialName();
2326                                                         $href = $title->getLocalURL();
2327                                                 } else {
2328                                                         $href = 'INVALID-TITLE';
2329                                                 }
2330                                         }
2331
2332                                         $bar[$heading][] = array(
2333                                                 'text' => $text,
2334                                                 'href' => $href,
2335                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2336                                                 'active' => false
2337                                         );
2338                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2339                                         global $wgParser, $wgTitle;
2340
2341                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2342
2343                                         $options = new ParserOptions();
2344                                         $options->setEditSection( false );
2345                                         $options->setInterfaceMessage( true );
2346                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $options )->getText();
2347                                 } else {
2348                                         continue;
2349                                 }
2350                         }
2351                 }
2352
2353                 if ( count( $wikiBar ) > 0 ) {
2354                         $bar = array_merge( $bar, $wikiBar );
2355                 }
2356
2357                 return $bar;
2358         }
2359
2360         /**
2361          * Should we include common/wikiprintable.css?  Skins that have their own
2362          * print stylesheet should override this and return false.  (This is an
2363          * ugly hack to get Monobook to play nicely with
2364          * OutputPage::headElement().)
2365          *
2366          * @return bool
2367          */
2368         public function commonPrintStylesheet() {
2369                 return true;
2370         }
2371
2372         /**
2373          * Gets new talk page messages for the current user.
2374          * @return MediaWiki message or if no new talk page messages, nothing
2375          */
2376         function getNewtalks() {
2377                 global $wgUser, $wgOut;
2378
2379                 $newtalks = $wgUser->getNewMessageLinks();
2380                 $ntl = '';
2381
2382                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2383                         $userTitle = $this->mUser->getUserPage();
2384                         $userTalkTitle = $userTitle->getTalkPage();
2385
2386                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2387                                 $newMessagesLink = $this->link(
2388                                         $userTalkTitle,
2389                                         wfMsgHtml( 'newmessageslink' ),
2390                                         array(),
2391                                         array( 'redirect' => 'no' ),
2392                                         array( 'known', 'noclasses' )
2393                                 );
2394
2395                                 $newMessagesDiffLink = $this->link(
2396                                         $userTalkTitle,
2397                                         wfMsgHtml( 'newmessagesdifflink' ),
2398                                         array(),
2399                                         array( 'diff' => 'cur' ),
2400                                         array( 'known', 'noclasses' )
2401                                 );
2402
2403                                 $ntl = wfMsg(
2404                                         'youhavenewmessages',
2405                                         $newMessagesLink,
2406                                         $newMessagesDiffLink
2407                                 );
2408                                 # Disable Squid cache
2409                                 $wgOut->setSquidMaxage( 0 );
2410                         }
2411                 } elseif ( count( $newtalks ) ) {
2412                         // _>" " for BC <= 1.16
2413                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2414                         $msgs = array();
2415
2416                         foreach ( $newtalks as $newtalk ) {
2417                                 $msgs[] = Xml::element(
2418                                         'a',
2419                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2420                                 );
2421                         }
2422                         $parts = implode( $sep, $msgs );
2423                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2424                         $wgOut->setSquidMaxage( 0 );
2425                 }
2426
2427                 return $ntl;
2428         }
2429 }