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, $wgRestrictionTypes, $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                 );
 506                 foreach ( $wgRestrictionTypes as $type ) {
 507                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 508                 }
 509                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 510                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 511                 }
 512
 513                 // Allow extensions to add their custom variables to the global JS variables
 514                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 515
 516                 return self::makeVariablesScript( $vars );
 517         }
 518
 519         /**
 520          * To make it harder for someone to slip a user a fake
 521          * user-JavaScript or user-CSS preview, a random token
 522          * is associated with the login session. If it's not
 523          * passed back with the preview request, we won't render
 524          * the code.
 525          *
 526          * @param $action String: 'edit', 'submit' etc.
 527          * @return bool
 528          */
 529         public function userCanPreview( $action ) {
 530                 global $wgRequest, $wgUser;
 531
 532                 if ( $action != 'submit' ) {
 533                         return false;
 534                 }
 535                 if ( !$wgRequest->wasPosted() ) {
 536                         return false;
 537                 }
 538                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 539                         return false;
 540                 }
 541                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 542                         return false;
 543                 }
 544
 545                 return $wgUser->matchEditToken(
 546                         $wgRequest->getVal( 'wpEditToken' ) );
 547         }
 548
 549         /**
 550          * Generated JavaScript action=raw&gen=js
 551          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 552          * nated together.  For some bizarre reason, it does *not* return any
 553          * custom user JS from subpages.  Huh?
 554          *
 555          * There's absolutely no reason to have separate Monobook/Common JSes.
 556          * Any JS that cares can just check the skin variable generated at the
 557          * top.  For now Monobook.js will be maintained, but it should be consi-
 558          * dered deprecated.
 559          *
 560          * @param $skinName String: If set, overrides the skin name
 561          * @return string
 562          */
 563         public function generateUserJs( $skinName = null ) {
 564
 565                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 566
 567                 return '';
 568         }
 569
 570         /**
 571          * Generate user stylesheet for action=raw&gen=css
 572          */
 573         public function generateUserStylesheet() {
 574
 575                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 576
 577                 return '';
 578         }
 579
 580         /**
 581          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 582          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 583          */
 584         protected function reallyGenerateUserStylesheet() {
 585
 586                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 587
 588                 return '';
 589         }
 590
 591         /**
 592          * @private
 593          */
 594         function setupUserCss( OutputPage $out ) {
 595                 global $wgRequest;
 596                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs;
 597
 598                 wfProfileIn( __METHOD__ );
 599
 600                 $this->setupSkinUserCss( $out );
 601                 // Add any extension CSS
 602                 foreach ( $out->getExtStyle() as $url ) {
 603                         $out->addStyle( $url );
 604                 }
 605
 606                 // Per-site custom styles
 607                 if ( $wgUseSiteCss ) {
 608                         $out->addModuleStyles( 'site' );
 609                 }
 610
 611                 // Per-user custom styles
 612                 if ( $wgAllowUserCss ) {
 613                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 614                                 // @FIXME: properly escape the cdata!
 615                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 616                         } else {
 617                                 $out->addModuleStyles( 'user' );
 618                         }
 619                 }
 620
 621                 // Per-user preference styles
 622                 if ( $wgAllowUserCssPrefs ) {
 623                         $out->addModuleStyles( 'user.options' );
 624                 }
 625
 626                 wfProfileOut( __METHOD__ );
 627         }
 628
 629         /**
 630          * Get the query to generate a dynamic stylesheet
 631          *
 632          * @return array
 633          */
 634         public static function getDynamicStylesheetQuery() {
 635                 global $wgSquidMaxage;
 636
 637                 return array(
 638                                 'action' => 'raw',
 639                                 'maxage' => $wgSquidMaxage,
 640                                 'usemsgcache' => 'yes',
 641                                 'ctype' => 'text/css',
 642                                 'smaxage' => $wgSquidMaxage,
 643                         );
 644         }
 645
 646         /**
 647          * Add skin specific stylesheets
 648          * @param $out OutputPage
 649          */
 650         function setupSkinUserCss( OutputPage $out ) {
 651                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 652                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 653                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 654                 $out->addStyle( $this->getStylesheet() );
 655                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 656         }
 657
 658         function getPageClasses( $title ) {
 659                 $numeric = 'ns-' . $title->getNamespace();
 660
 661                 if ( $title->getNamespace() == NS_SPECIAL ) {
 662                         $type = 'ns-special';
 663                 } elseif ( $title->isTalkPage() ) {
 664                         $type = 'ns-talk';
 665                 } else {
 666                         $type = 'ns-subject';
 667                 }
 668
 669                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 670
 671                 return "$numeric $type $name";
 672         }
 673
 674         /**
 675          * This will be called by OutputPage::headElement when it is creating the
 676          * <body> tag, skins can override it if they have a need to add in any
 677          * body attributes or classes of their own.
 678          */
 679         function addToBodyAttributes( $out, &$bodyAttrs ) {
 680                 // does nothing by default
 681         }
 682
 683         /**
 684          * URL to the logo
 685          */
 686         function getLogo() {
 687                 global $wgLogo;
 688                 return $wgLogo;
 689         }
 690
 691         /**
 692          * This will be called immediately after the <body> tag.  Split into
 693          * two functions to make it easier to subclass.
 694          */
 695         function beforeContent() {
 696                 return $this->doBeforeContent();
 697         }
 698
 699         function doBeforeContent() {
 700                 global $wgContLang;
 701                 wfProfileIn( __METHOD__ );
 702
 703                 $s = '';
 704                 $qb = $this->qbSetting();
 705
 706                 $langlinks = $this->otherLanguages();
 707                 if ( $langlinks ) {
 708                         $rows = 2;
 709                         $borderhack = '';
 710                 } else {
 711                         $rows = 1;
 712                         $langlinks = false;
 713                         $borderhack = 'class="top"';
 714                 }
 715
 716                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 717                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 718
 719                 $shove = ( $qb != 0 );
 720                 $left = ( $qb == 1 || $qb == 3 );
 721
 722                 if ( $wgContLang->isRTL() ) {
 723                         $left = !$left;
 724                 }
 725
 726                 if ( !$shove ) {
 727                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 728                                 $this->logoText() . '</td>';
 729                 } elseif ( $left ) {
 730                         $s .= $this->getQuickbarCompensator( $rows );
 731                 }
 732
 733                 $l = $wgContLang->alignStart();
 734                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 735
 736                 $s .= $this->topLinks();
 737                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 738
 739                 $r = $wgContLang->alignEnd();
 740                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 741                 $s .= $this->nameAndLogin();
 742                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 743
 744                 if ( $langlinks ) {
 745                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 746                 }
 747
 748                 if ( $shove && !$left ) { # Right
 749                         $s .= $this->getQuickbarCompensator( $rows );
 750                 }
 751
 752                 $s .= "</tr>\n</table>\n</div>\n";
 753                 $s .= "\n<div id='article'>\n";
 754
 755                 $notice = wfGetSiteNotice();
 756
 757                 if ( $notice ) {
 758                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 759                 }
 760                 $s .= $this->pageTitle();
 761                 $s .= $this->pageSubtitle();
 762                 $s .= $this->getCategories();
 763
 764                 wfProfileOut( __METHOD__ );
 765                 return $s;
 766         }
 767
 768         function getCategoryLinks() {
 769                 global $wgOut, $wgUseCategoryBrowser;
 770                 global $wgContLang, $wgUser;
 771
 772                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 773                         return '';
 774                 }
 775
 776                 # Separator
 777                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 778
 779                 // Use Unicode bidi embedding override characters,
 780                 // to make sure links don't smash each other up in ugly ways.
 781                 $dir = $wgContLang->getDir();
 782                 $embed = "<span dir='$dir'>";
 783                 $pop = '</span>';
 784
 785                 $allCats = $wgOut->getCategoryLinks();
 786                 $s = '';
 787                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 788
 789                 if ( !empty( $allCats['normal'] ) ) {
 790                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 791
 792                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 793                         $s .= '<div id="mw-normal-catlinks">' .
 794                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 795                                 . $colon . $t . '</div>';
 796                 }
 797
 798                 # Hidden categories
 799                 if ( isset( $allCats['hidden'] ) ) {
 800                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 801                                 $class = 'mw-hidden-cats-user-shown';
 802                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 803                                 $class = 'mw-hidden-cats-ns-shown';
 804                         } else {
 805                                 $class = 'mw-hidden-cats-hidden';
 806                         }
 807
 808                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 809                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 810                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 811                                 '</div>';
 812                 }
 813
 814                 # optional 'dmoz-like' category browser. Will be shown under the list
 815                 # of categories an article belong to
 816                 if ( $wgUseCategoryBrowser ) {
 817                         $s .= '<br /><hr />';
 818
 819                         # get a big array of the parents tree
 820                         $parenttree = $this->mTitle->getParentCategoryTree();
 821                         # Skin object passed by reference cause it can not be
 822                         # accessed under the method subfunction drawCategoryBrowser
 823                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 824                         # Clean out bogus first entry and sort them
 825                         unset( $tempout[0] );
 826                         asort( $tempout );
 827                         # Output one per line
 828                         $s .= implode( "<br />\n", $tempout );
 829                 }
 830
 831                 return $s;
 832         }
 833
 834         /**
 835          * Render the array as a serie of links.
 836          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 837          * @param &skin Object: skin passed by reference
 838          * @return String separated by &gt;, terminate with "\n"
 839          */
 840         function drawCategoryBrowser( $tree, &$skin ) {
 841                 $return = '';
 842
 843                 foreach ( $tree as $element => $parent ) {
 844                         if ( empty( $parent ) ) {
 845                                 # element start a new list
 846                                 $return .= "\n";
 847                         } else {
 848                                 # grab the others elements
 849                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 850                         }
 851
 852                         # add our current element to the list
 853                         $eltitle = Title::newFromText( $element );
 854                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 855                 }
 856
 857                 return $return;
 858         }
 859
 860         function getCategories() {
 861                 $catlinks = $this->getCategoryLinks();
 862
 863                 $classes = 'catlinks';
 864
 865                 global $wgOut, $wgUser;
 866
 867                 // Check what we're showing
 868                 $allCats = $wgOut->getCategoryLinks();
 869                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 870                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 871
 872                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 873                         $classes .= ' catlinks-allhidden';
 874                 }
 875
 876                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 877         }
 878
 879         function getQuickbarCompensator( $rows = 1 ) {
 880                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 881         }
 882
 883         /**
 884          * This runs a hook to allow extensions placing their stuff after content
 885          * and article metadata (e.g. categories).
 886          * Note: This function has nothing to do with afterContent().
 887          *
 888          * This hook is placed here in order to allow using the same hook for all
 889          * skins, both the SkinTemplate based ones and the older ones, which directly
 890          * use this class to get their data.
 891          *
 892          * The output of this function gets processed in SkinTemplate::outputPage() for
 893          * the SkinTemplate based skins, all other skins should directly echo it.
 894          *
 895          * Returns an empty string by default, if not changed by any hook function.
 896          */
 897         protected function afterContentHook() {
 898                 $data = '';
 899
 900                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 901                         // adding just some spaces shouldn't toggle the output
 902                         // of the whole <div/>, so we use trim() here
 903                         if ( trim( $data ) != '' ) {
 904                                 // Doing this here instead of in the skins to
 905                                 // ensure that the div has the same ID in all
 906                                 // skins
 907                                 $data = "<div id='mw-data-after-content'>\n" .
 908                                         "\t$data\n" .
 909                                         "</div>\n";
 910                         }
 911                 } else {
 912                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 913                 }
 914
 915                 return $data;
 916         }
 917
 918         /**
 919          * Generate debug data HTML for displaying at the bottom of the main content
 920          * area.
 921          * @return String HTML containing debug data, if enabled (otherwise empty).
 922          */
 923         protected function generateDebugHTML() {
 924                 global $wgShowDebug, $wgOut;
 925
 926                 if ( $wgShowDebug ) {
 927                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 928                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 929                                 $listInternals . "</ul>\n";
 930                 }
 931
 932                 return '';
 933         }
 934
 935         private function formatDebugHTML( $debugText ) {
 936                 $lines = explode( "\n", $debugText );
 937                 $curIdent = 0;
 938                 $ret = '<li>';
 939
 940                 foreach ( $lines as $line ) {
 941                         $display = ltrim( $line );
 942                         $ident = strlen( $line ) - strlen( $display );
 943                         $diff = $ident - $curIdent;
 944
 945                         if ( $display == '' ) {
 946                                 $display = "\xc2\xa0";
 947                         }
 948
 949                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 950                                 $ident = $curIdent;
 951                                 $diff = 0;
 952                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 953                         } else {
 954                                 $display = htmlspecialchars( $display );
 955                         }
 956
 957                         if ( $diff < 0 ) {
 958                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 959                         } elseif ( $diff == 0 ) {
 960                                 $ret .= "</li><li>\n";
 961                         } else {
 962                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 963                         }
 964                         $ret .= $display . "\n";
 965
 966                         $curIdent = $ident;
 967                 }
 968
 969                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 970
 971                 return $ret;
 972         }
 973
 974         /**
 975          * This gets called shortly before the </body> tag.
 976          * @return String HTML to be put before </body>
 977          */
 978         function afterContent() {
 979                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 980                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 981         }
 982
 983         /**
 984          * This gets called shortly before the </body> tag.
 985          * @param $out OutputPage object
 986          * @return String HTML-wrapped JS code to be put before </body>
 987          */
 988         function bottomScripts( $out ) {
 989                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 990                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 991
 992                 return $bottomScriptText;
 993         }
 994
 995         /** @return string Retrievied from HTML text */
 996         function printSource() {
 997                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 998                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 999         }
1000
1001         function printFooter() {
1002                 return "<p>" .  $this->printSource() .
1003                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1004         }
1005
1006         /** overloaded by derived classes */
1007         function doAfterContent() {
1008                 return '</div></div>';
1009         }
1010
1011         function pageTitleLinks() {
1012                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1013
1014                 $oldid = $wgRequest->getVal( 'oldid' );
1015                 $diff = $wgRequest->getVal( 'diff' );
1016                 $action = $wgRequest->getText( 'action' );
1017
1018                 $s[] = $this->printableLink();
1019                 $disclaimer = $this->disclaimerLink(); # may be empty
1020
1021                 if ( $disclaimer ) {
1022                         $s[] = $disclaimer;
1023                 }
1024
1025                 $privacy = $this->privacyLink(); # may be empty too
1026
1027                 if ( $privacy ) {
1028                         $s[] = $privacy;
1029                 }
1030
1031                 if ( $wgOut->isArticleRelated() ) {
1032                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1033                                 $name = $this->mTitle->getDBkey();
1034                                 $image = wfFindFile( $this->mTitle );
1035
1036                                 if ( $image ) {
1037                                         $link = htmlspecialchars( $image->getURL() );
1038                                         $style = $this->getInternalLinkAttributes( $link, $name );
1039                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1040                                 }
1041                         }
1042                 }
1043
1044                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1045                         $s[] .= $this->link(
1046                                         $this->mTitle,
1047                                         wfMsg( 'currentrev' ),
1048                                         array(),
1049                                         array(),
1050                                         array( 'known', 'noclasses' )
1051                         );
1052                 }
1053
1054                 if ( $wgUser->getNewtalk() ) {
1055                         # do not show "You have new messages" text when we are viewing our
1056                         # own talk page
1057                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1058                                 $tl = $this->link(
1059                                         $wgUser->getTalkPage(),
1060                                         wfMsgHtml( 'newmessageslink' ),
1061                                         array(),
1062                                         array( 'redirect' => 'no' ),
1063                                         array( 'known', 'noclasses' )
1064                                 );
1065
1066                                 $dl = $this->link(
1067                                         $wgUser->getTalkPage(),
1068                                         wfMsgHtml( 'newmessagesdifflink' ),
1069                                         array(),
1070                                         array( 'diff' => 'cur' ),
1071                                         array( 'known', 'noclasses' )
1072                                 );
1073                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1074                                 # disable caching
1075                                 $wgOut->setSquidMaxage( 0 );
1076                                 $wgOut->enableClientCache( false );
1077                         }
1078                 }
1079
1080                 $undelete = $this->getUndeleteLink();
1081
1082                 if ( !empty( $undelete ) ) {
1083                         $s[] = $undelete;
1084                 }
1085
1086                 return $wgLang->pipeList( $s );
1087         }
1088
1089         function getUndeleteLink() {
1090                 global $wgUser, $wgLang, $wgRequest;
1091
1092                 $action = $wgRequest->getVal( 'action', 'view' );
1093
1094                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1095                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1096                         $n = $this->mTitle->isDeleted();
1097
1098                         if ( $n ) {
1099                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1100                                         $msg = 'thisisdeleted';
1101                                 } else {
1102                                         $msg = 'viewdeleted';
1103                                 }
1104
1105                                 return wfMsg(
1106                                         $msg,
1107                                         $this->link(
1108                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1109                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1110                                                 array(),
1111                                                 array(),
1112                                                 array( 'known', 'noclasses' )
1113                                         )
1114                                 );
1115                         }
1116                 }
1117
1118                 return '';
1119         }
1120
1121         function printableLink() {
1122                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1123
1124                 $s = array();
1125
1126                 if ( !$wgOut->isPrintable() ) {
1127                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1128                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1129                 }
1130
1131                 if ( $wgOut->isSyndicated() ) {
1132                         foreach ( $wgFeedClasses as $format => $class ) {
1133                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1134                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1135                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1136                         }
1137                 }
1138                 return $wgLang->pipeList( $s );
1139         }
1140
1141         /**
1142          * Gets the h1 element with the page title.
1143          * @return string
1144          */
1145         function pageTitle() {
1146                 global $wgOut;
1147                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1148                 return $s;
1149         }
1150
1151         function pageSubtitle() {
1152                 global $wgOut;
1153
1154                 $sub = $wgOut->getSubtitle();
1155
1156                 if ( $sub == '' ) {
1157                         global $wgExtraSubtitle;
1158                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1159                 }
1160
1161                 $subpages = $this->subPageSubtitle();
1162                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1163                 $s = "<p class='subtitle'>{$sub}</p>\n";
1164
1165                 return $s;
1166         }
1167
1168         function subPageSubtitle() {
1169                 $subpages = '';
1170
1171                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this ) ) ) {
1172                         return $subpages;
1173                 }
1174
1175                 global $wgOut;
1176
1177                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1178                         $ptext = $this->mTitle->getPrefixedText();
1179                         if ( preg_match( '/\//', $ptext ) ) {
1180                                 $links = explode( '/', $ptext );
1181                                 array_pop( $links );
1182                                 $c = 0;
1183                                 $growinglink = '';
1184                                 $display = '';
1185
1186                                 foreach ( $links as $link ) {
1187                                         $growinglink .= $link;
1188                                         $display .= $link;
1189                                         $linkObj = Title::newFromText( $growinglink );
1190
1191                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1192                                                 $getlink = $this->link(
1193                                                         $linkObj,
1194                                                         htmlspecialchars( $display ),
1195                                                         array(),
1196                                                         array(),
1197                                                         array( 'known', 'noclasses' )
1198                                                 );
1199
1200                                                 $c++;
1201
1202                                                 if ( $c > 1 ) {
1203                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1204                                                 } else  {
1205                                                         $subpages .= '&lt; ';
1206                                                 }
1207
1208                                                 $subpages .= $getlink;
1209                                                 $display = '';
1210                                         } else {
1211                                                 $display .= '/';
1212                                         }
1213                                         $growinglink .= '/';
1214                                 }
1215                         }
1216                 }
1217
1218                 return $subpages;
1219         }
1220
1221         /**
1222          * Returns true if the IP should be shown in the header
1223          */
1224         function showIPinHeader() {
1225                 global $wgShowIPinHeader;
1226                 return $wgShowIPinHeader && session_id() != '';
1227         }
1228
1229         function nameAndLogin() {
1230                 global $wgUser, $wgLang, $wgContLang;
1231
1232                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1233
1234                 $ret = '';
1235
1236                 if ( $wgUser->isAnon() ) {
1237                         if ( $this->showIPinHeader() ) {
1238                                 $name = wfGetIP();
1239
1240                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1241                                         $wgLang->getNsText( NS_TALK ) );
1242
1243                                 $ret .= "$name ($talkLink)";
1244                         } else {
1245                                 $ret .= wfMsg( 'notloggedin' );
1246                         }
1247
1248                         $returnTo = $this->mTitle->getPrefixedDBkey();
1249                         $query = array();
1250
1251                         if ( $logoutPage != $returnTo ) {
1252                                 $query['returnto'] = $returnTo;
1253                         }
1254
1255                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1256                                 ? 'nav-login-createaccount'
1257                                 : 'login';
1258                         $ret .= "\n<br />" . $this->link(
1259                                 SpecialPage::getTitleFor( 'Userlogin' ),
1260                                 wfMsg( $loginlink ), array(), $query
1261                         );
1262                 } else {
1263                         $returnTo = $this->mTitle->getPrefixedDBkey();
1264                         $talkLink = $this->link( $wgUser->getTalkPage(),
1265                                 $wgLang->getNsText( NS_TALK ) );
1266
1267                         $ret .= $this->link( $wgUser->getUserPage(),
1268                                 htmlspecialchars( $wgUser->getName() ) );
1269                         $ret .= " ($talkLink)<br />";
1270                         $ret .= $wgLang->pipeList( array(
1271                                 $this->link(
1272                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1273                                         array(), array( 'returnto' => $returnTo )
1274                                 ),
1275                                 $this->specialLink( 'Preferences' ),
1276                         ) );
1277                 }
1278
1279                 $ret = $wgLang->pipeList( array(
1280                         $ret,
1281                         $this->link(
1282                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1283                                 wfMsg( 'help' )
1284                         ),
1285                 ) );
1286
1287                 return $ret;
1288         }
1289
1290         function getSearchLink() {
1291                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1292                 return $searchPage->getLocalURL();
1293         }
1294
1295         function escapeSearchLink() {
1296                 return htmlspecialchars( $this->getSearchLink() );
1297         }
1298
1299         function searchForm() {
1300                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1301
1302                 $search = $wgRequest->getText( 'search' );
1303
1304                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1305                   . $this->escapeSearchLink() . "\">\n"
1306                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1307                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1308                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1309
1310                 if ( $wgUseTwoButtonsSearchForm ) {
1311                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1312                 } else {
1313                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1314                 }
1315
1316                 $s .= '</form>';
1317
1318                 // Ensure unique id's for search boxes made after the first
1319                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1320
1321                 return $s;
1322         }
1323
1324         function topLinks() {
1325                 global $wgOut;
1326
1327                 $s = array(
1328                         $this->mainPageLink(),
1329                         $this->specialLink( 'Recentchanges' )
1330                 );
1331
1332                 if ( $wgOut->isArticleRelated() ) {
1333                         $s[] = $this->editThisPage();
1334                         $s[] = $this->historyLink();
1335                 }
1336
1337                 # Many people don't like this dropdown box
1338                 # $s[] = $this->specialPagesList();
1339
1340                 if ( $this->variantLinks() ) {
1341                         $s[] = $this->variantLinks();
1342                 }
1343
1344                 if ( $this->extensionTabLinks() ) {
1345                         $s[] = $this->extensionTabLinks();
1346                 }
1347
1348                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1349                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1350         }
1351
1352         /**
1353          * Compatibility for extensions adding functionality through tabs.
1354          * Eventually these old skins should be replaced with SkinTemplate-based
1355          * versions, sigh...
1356          * @return string
1357          */
1358         function extensionTabLinks() {
1359                 $tabs = array();
1360                 $out = '';
1361                 $s = array();
1362                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1363                 foreach ( $tabs as $tab ) {
1364                         $s[] = Xml::element( 'a',
1365                                 array( 'href' => $tab['href'] ),
1366                                 $tab['text'] );
1367                 }
1368
1369                 if ( count( $s ) ) {
1370                         global $wgLang;
1371
1372                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1373                         $out .= $wgLang->pipeList( $s );
1374                 }
1375
1376                 return $out;
1377         }
1378
1379         /**
1380          * Language/charset variant links for classic-style skins
1381          * @return string
1382          */
1383         function variantLinks() {
1384                 $s = '';
1385
1386                 /* show links to different language variants */
1387                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1388
1389                 $variants = $wgContLang->getVariants();
1390
1391                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1392                         foreach ( $variants as $code ) {
1393                                 $varname = $wgContLang->getVariantname( $code );
1394
1395                                 if ( $varname == 'disable' ) {
1396                                         continue;
1397                                 }
1398                                 $s = $wgLang->pipeList( array(
1399                                         $s,
1400                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1401                                 ) );
1402                         }
1403                 }
1404
1405                 return $s;
1406         }
1407
1408         function bottomLinks() {
1409                 global $wgOut, $wgUser, $wgUseTrackbacks;
1410                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1411
1412                 $s = '';
1413                 if ( $wgOut->isArticleRelated() ) {
1414                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1415
1416                         if ( $wgUser->isLoggedIn() ) {
1417                                 $element[] = $this->watchThisPage();
1418                         }
1419
1420                         $element[] = $this->talkLink();
1421                         $element[] = $this->historyLink();
1422                         $element[] = $this->whatLinksHere();
1423                         $element[] = $this->watchPageLinksLink();
1424
1425                         if ( $wgUseTrackbacks ) {
1426                                 $element[] = $this->trackbackLink();
1427                         }
1428
1429                         if (
1430                                 $this->mTitle->getNamespace() == NS_USER ||
1431                                 $this->mTitle->getNamespace() == NS_USER_TALK
1432                         ) {
1433                                 $id = User::idFromName( $this->mTitle->getText() );
1434                                 $ip = User::isIP( $this->mTitle->getText() );
1435
1436                                 # Both anons and non-anons have contributions list
1437                                 if ( $id || $ip ) {
1438                                         $element[] = $this->userContribsLink();
1439                                 }
1440
1441                                 if ( $this->showEmailUser( $id ) ) {
1442                                         $element[] = $this->emailUserLink();
1443                                 }
1444                         }
1445
1446                         $s = implode( $element, $sep );
1447
1448                         if ( $this->mTitle->getArticleId() ) {
1449                                 $s .= "\n<br />";
1450
1451                                 // Delete/protect/move links for privileged users
1452                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1453                                         $s .= $this->deleteThisPage();
1454                                 }
1455
1456                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1457                                         $s .= $sep . $this->protectThisPage();
1458                                 }
1459
1460                                 if ( $wgUser->isAllowed( 'move' ) ) {
1461                                         $s .= $sep . $this->moveThisPage();
1462                                 }
1463                         }
1464
1465                         $s .= "<br />\n" . $this->otherLanguages();
1466                 }
1467
1468                 return $s;
1469         }
1470
1471         function pageStats() {
1472                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1473                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1474
1475                 $oldid = $wgRequest->getVal( 'oldid' );
1476                 $diff = $wgRequest->getVal( 'diff' );
1477
1478                 if ( !$wgOut->isArticle() ) {
1479                         return '';
1480                 }
1481
1482                 if ( !$wgArticle instanceof Article ) {
1483                         return '';
1484                 }
1485
1486                 if ( isset( $oldid ) || isset( $diff ) ) {
1487                         return '';
1488                 }
1489
1490                 if ( 0 == $wgArticle->getID() ) {
1491                         return '';
1492                 }
1493
1494                 $s = '';
1495
1496                 if ( !$wgDisableCounters ) {
1497                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1498
1499                         if ( $count ) {
1500                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1501                         }
1502                 }
1503
1504                 if ( $wgMaxCredits != 0 ) {
1505                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1506                 } else {
1507                         $s .= $this->lastModified();
1508                 }
1509
1510                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1511                         $dbr = wfGetDB( DB_SLAVE );
1512                         $res = $dbr->select(
1513                                 'watchlist',
1514                                 array( 'COUNT(*) AS n' ),
1515                                 array(
1516                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1517                                         'wl_namespace' => $this->mTitle->getNamespace()
1518                                 ),
1519                                 __METHOD__
1520                         );
1521                         $x = $dbr->fetchObject( $res );
1522
1523                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1524                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1525                         );
1526                 }
1527
1528                 return $s . ' ' .  $this->getCopyright();
1529         }
1530
1531         function getCopyright( $type = 'detect' ) {
1532                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1533
1534                 if ( $type == 'detect' ) {
1535                         $diff = $wgRequest->getVal( 'diff' );
1536                         $isCur = $wgArticle && $wgArticle->isCurrent();
1537
1538                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1539                                 $type = 'history';
1540                         } else {
1541                                 $type = 'normal';
1542                         }
1543                 }
1544
1545                 if ( $type == 'history' ) {
1546                         $msg = 'history_copyright';
1547                 } else {
1548                         $msg = 'copyright';
1549                 }
1550
1551                 $out = '';
1552
1553                 if ( $wgRightsPage ) {
1554                         $title = Title::newFromText( $wgRightsPage );
1555                         $link = $this->linkKnown( $title, $wgRightsText );
1556                 } elseif ( $wgRightsUrl ) {
1557                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1558                 } elseif ( $wgRightsText ) {
1559                         $link = $wgRightsText;
1560                 } else {
1561                         # Give up now
1562                         return $out;
1563                 }
1564
1565                 // Allow for site and per-namespace customization of copyright notice.
1566                 $forContent = true;
1567
1568                 if ( isset( $wgArticle ) ) {
1569                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1570                 }
1571
1572                 if ( $forContent ) {
1573                         $out .= wfMsgForContent( $msg, $link );
1574                 } else {
1575                         $out .= wfMsg( $msg, $link );
1576                 }
1577
1578                 return $out;
1579         }
1580
1581         function getCopyrightIcon() {
1582                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1583
1584                 $out = '';
1585
1586                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1587                         $out = $wgCopyrightIcon;
1588                 } elseif ( $wgRightsIcon ) {
1589                         $icon = htmlspecialchars( $wgRightsIcon );
1590
1591                         if ( $wgRightsUrl ) {
1592                                 $url = htmlspecialchars( $wgRightsUrl );
1593                                 $out .= '<a href="' . $url . '">';
1594                         }
1595
1596                         $text = htmlspecialchars( $wgRightsText );
1597                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1598
1599                         if ( $wgRightsUrl ) {
1600                                 $out .= '</a>';
1601                         }
1602                 }
1603
1604                 return $out;
1605         }
1606
1607         /**
1608          * Gets the powered by MediaWiki icon.
1609          * @return string
1610          */
1611         function getPoweredBy() {
1612                 global $wgStylePath;
1613
1614                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1615                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1616                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
1617                 return $text;
1618         }
1619
1620         function lastModified() {
1621                 global $wgLang, $wgArticle;
1622
1623                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1624                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1625                 } else {
1626                         $timestamp = $wgArticle->getTimestamp();
1627                 }
1628
1629                 if ( $timestamp ) {
1630                         $d = $wgLang->date( $timestamp, true );
1631                         $t = $wgLang->time( $timestamp, true );
1632                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1633                 } else {
1634                         $s = '';
1635                 }
1636
1637                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1638                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1639                 }
1640
1641                 return $s;
1642         }
1643
1644         function logoText( $align = '' ) {
1645                 if ( $align != '' ) {
1646                         $a = " align='{$align}'";
1647                 } else {
1648                         $a = '';
1649                 }
1650
1651                 $mp = wfMsg( 'mainpage' );
1652                 $mptitle = Title::newMainPage();
1653                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1654
1655                 $logourl = $this->getLogo();
1656                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1657
1658                 return $s;
1659         }
1660
1661         /**
1662          * Show a drop-down box of special pages
1663          */
1664         function specialPagesList() {
1665                 global $wgContLang, $wgServer, $wgRedirectScript;
1666
1667                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1668
1669                 foreach ( $pages as $name => $page ) {
1670                         $pages[$name] = $page->getDescription();
1671                 }
1672
1673                 $go = wfMsg( 'go' );
1674                 $sp = wfMsg( 'specialpages' );
1675                 $spp = $wgContLang->specialPage( 'Specialpages' );
1676
1677                 $s = '<form id="specialpages" method="get" ' .
1678                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1679                 $s .= "<select name=\"wpDropdown\">\n";
1680                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1681
1682
1683                 foreach ( $pages as $name => $desc ) {
1684                         $p = $wgContLang->specialPage( $name );
1685                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1686                 }
1687
1688                 $s .= "</select>\n";
1689                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1690                 $s .= "</form>\n";
1691
1692                 return $s;
1693         }
1694
1695         /**
1696          * Renders a $wgFooterIcons icon acording to the method's arguments
1697          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1698          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1699          */
1700         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1701                 if ( is_string( $icon ) ) {
1702                         $html = $icon;
1703                 } else { // Assuming array
1704                         $url = $icon["url"];
1705                         unset( $icon["url"] );
1706                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1707                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1708                         } else {
1709                                 $html = htmlspecialchars( $icon["alt"] );
1710                         }
1711                         if ( $url ) {
1712                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1713                         }
1714                 }
1715                 return $html;
1716         }
1717
1718         /**
1719          * Gets the link to the wiki's main page.
1720          * @return string
1721          */
1722         function mainPageLink() {
1723                 $s = $this->link(
1724                         Title::newMainPage(),
1725                         wfMsg( 'mainpage' ),
1726                         array(),
1727                         array(),
1728                         array( 'known', 'noclasses' )
1729                 );
1730
1731                 return $s;
1732         }
1733
1734         public function footerLink( $desc, $page ) {
1735                 // if the link description has been set to "-" in the default language,
1736                 if ( wfMsgForContent( $desc )  == '-' ) {
1737                         // then it is disabled, for all languages.
1738                         return '';
1739                 } else {
1740                         // Otherwise, we display the link for the user, described in their
1741                         // language (which may or may not be the same as the default language),
1742                         // but we make the link target be the one site-wide page.
1743                         $title = Title::newFromText( wfMsgForContent( $page ) );
1744
1745                         return $this->linkKnown(
1746                                 $title,
1747                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1748                         );
1749                 }
1750         }
1751
1752         /**
1753          * Gets the link to the wiki's privacy policy page.
1754          */
1755         function privacyLink() {
1756                 return $this->footerLink( 'privacy', 'privacypage' );
1757         }
1758
1759         /**
1760          * Gets the link to the wiki's about page.
1761          */
1762         function aboutLink() {
1763                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1764         }
1765
1766         /**
1767          * Gets the link to the wiki's general disclaimers page.
1768          */
1769         function disclaimerLink() {
1770                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1771         }
1772
1773         function editThisPage() {
1774                 global $wgOut;
1775
1776                 if ( !$wgOut->isArticleRelated() ) {
1777                         $s = wfMsg( 'protectedpage' );
1778                 } else {
1779                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1780                                 $t = wfMsg( 'editthispage' );
1781                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1782                                 $t = wfMsg( 'create-this-page' );
1783                         } else {
1784                                 $t = wfMsg( 'viewsource' );
1785                         }
1786
1787                         $s = $this->link(
1788                                 $this->mTitle,
1789                                 $t,
1790                                 array(),
1791                                 $this->editUrlOptions(),
1792                                 array( 'known', 'noclasses' )
1793                         );
1794                 }
1795
1796                 return $s;
1797         }
1798
1799         /**
1800          * Return URL options for the 'edit page' link.
1801          * This may include an 'oldid' specifier, if the current page view is such.
1802          *
1803          * @return array
1804          * @private
1805          */
1806         function editUrlOptions() {
1807                 global $wgArticle;
1808
1809                 $options = array( 'action' => 'edit' );
1810
1811                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1812                         $options['oldid'] = intval( $this->mRevisionId );
1813                 }
1814
1815                 return $options;
1816         }
1817
1818         function deleteThisPage() {
1819                 global $wgUser, $wgRequest;
1820
1821                 $diff = $wgRequest->getVal( 'diff' );
1822
1823                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1824                         $t = wfMsg( 'deletethispage' );
1825
1826                         $s = $this->link(
1827                                 $this->mTitle,
1828                                 $t,
1829                                 array(),
1830                                 array( 'action' => 'delete' ),
1831                                 array( 'known', 'noclasses' )
1832                         );
1833                 } else {
1834                         $s = '';
1835                 }
1836
1837                 return $s;
1838         }
1839
1840         function protectThisPage() {
1841                 global $wgUser, $wgRequest;
1842
1843                 $diff = $wgRequest->getVal( 'diff' );
1844
1845                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1846                         if ( $this->mTitle->isProtected() ) {
1847                                 $text = wfMsg( 'unprotectthispage' );
1848                                 $query = array( 'action' => 'unprotect' );
1849                         } else {
1850                                 $text = wfMsg( 'protectthispage' );
1851                                 $query = array( 'action' => 'protect' );
1852                         }
1853
1854                         $s = $this->link(
1855                                 $this->mTitle,
1856                                 $text,
1857                                 array(),
1858                                 $query,
1859                                 array( 'known', 'noclasses' )
1860                         );
1861                 } else {
1862                         $s = '';
1863                 }
1864
1865                 return $s;
1866         }
1867
1868         function watchThisPage() {
1869                 global $wgOut;
1870                 ++$this->mWatchLinkNum;
1871
1872                 if ( $wgOut->isArticleRelated() ) {
1873                         if ( $this->mTitle->userIsWatching() ) {
1874                                 $text = wfMsg( 'unwatchthispage' );
1875                                 $query = array( 'action' => 'unwatch' );
1876                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1877                         } else {
1878                                 $text = wfMsg( 'watchthispage' );
1879                                 $query = array( 'action' => 'watch' );
1880                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1881                         }
1882
1883                         $s = $this->link(
1884                                 $this->mTitle,
1885                                 $text,
1886                                 array( 'id' => $id ),
1887                                 $query,
1888                                 array( 'known', 'noclasses' )
1889                         );
1890                 } else {
1891                         $s = wfMsg( 'notanarticle' );
1892                 }
1893
1894                 return $s;
1895         }
1896
1897         function moveThisPage() {
1898                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1899                         return $this->link(
1900                                 SpecialPage::getTitleFor( 'Movepage' ),
1901                                 wfMsg( 'movethispage' ),
1902                                 array(),
1903                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1904                                 array( 'known', 'noclasses' )
1905                         );
1906                 } else {
1907                         // no message if page is protected - would be redundant
1908                         return '';
1909                 }
1910         }
1911
1912         function historyLink() {
1913                 return $this->link(
1914                         $this->mTitle,
1915                         wfMsgHtml( 'history' ),
1916                         array( 'rel' => 'archives' ),
1917                         array( 'action' => 'history' )
1918                 );
1919         }
1920
1921         function whatLinksHere() {
1922                 return $this->link(
1923                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1924                         wfMsgHtml( 'whatlinkshere' ),
1925                         array(),
1926                         array(),
1927                         array( 'known', 'noclasses' )
1928                 );
1929         }
1930
1931         function userContribsLink() {
1932                 return $this->link(
1933                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1934                         wfMsgHtml( 'contributions' ),
1935                         array(),
1936                         array(),
1937                         array( 'known', 'noclasses' )
1938                 );
1939         }
1940
1941         function showEmailUser( $id ) {
1942                 global $wgUser;
1943                 $targetUser = User::newFromId( $id );
1944                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1945                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1946         }
1947
1948         function emailUserLink() {
1949                 return $this->link(
1950                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1951                         wfMsg( 'emailuser' ),
1952                         array(),
1953                         array(),
1954                         array( 'known', 'noclasses' )
1955                 );
1956         }
1957
1958         function watchPageLinksLink() {
1959                 global $wgOut;
1960
1961                 if ( !$wgOut->isArticleRelated() ) {
1962                         return '(' . wfMsg( 'notanarticle' ) . ')';
1963                 } else {
1964                         return $this->link(
1965                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1966                                 wfMsg( 'recentchangeslinked-toolbox' ),
1967                                 array(),
1968                                 array(),
1969                                 array( 'known', 'noclasses' )
1970                         );
1971                 }
1972         }
1973
1974         function trackbackLink() {
1975                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1976                         . wfMsg( 'trackbacklink' ) . '</a>';
1977         }
1978
1979         function otherLanguages() {
1980                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1981
1982                 if ( $wgHideInterlanguageLinks ) {
1983                         return '';
1984                 }
1985
1986                 $a = $wgOut->getLanguageLinks();
1987
1988                 if ( 0 == count( $a ) ) {
1989                         return '';
1990                 }
1991
1992                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1993                 $first = true;
1994
1995                 if ( $wgContLang->isRTL() ) {
1996                         $s .= '<span dir="LTR">';
1997                 }
1998
1999                 foreach ( $a as $l ) {
2000                         if ( !$first ) {
2001                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
2002                         }
2003
2004                         $first = false;
2005
2006                         $nt = Title::newFromText( $l );
2007                         $url = $nt->escapeFullURL();
2008                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
2009                         $title = htmlspecialchars( $nt->getText() );
2010
2011                         if ( $text == '' ) {
2012                                 $text = $l;
2013                         }
2014
2015                         $style = $this->getExternalLinkAttributes();
2016                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
2017                 }
2018
2019                 if ( $wgContLang->isRTL() ) {
2020                         $s .= '</span>';
2021                 }
2022
2023                 return $s;
2024         }
2025
2026         function talkLink() {
2027                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
2028                         # No discussion links for special pages
2029                         return '';
2030                 }
2031
2032                 $linkOptions = array();
2033
2034                 if ( $this->mTitle->isTalkPage() ) {
2035                         $link = $this->mTitle->getSubjectPage();
2036                         switch( $link->getNamespace() ) {
2037                                 case NS_MAIN:
2038                                         $text = wfMsg( 'articlepage' );
2039                                         break;
2040                                 case NS_USER:
2041                                         $text = wfMsg( 'userpage' );
2042                                         break;
2043                                 case NS_PROJECT:
2044                                         $text = wfMsg( 'projectpage' );
2045                                         break;
2046                                 case NS_FILE:
2047                                         $text = wfMsg( 'imagepage' );
2048                                         # Make link known if image exists, even if the desc. page doesn't.
2049                                         if ( wfFindFile( $link ) )
2050                                                 $linkOptions[] = 'known';
2051                                         break;
2052                                 case NS_MEDIAWIKI:
2053                                         $text = wfMsg( 'mediawikipage' );
2054                                         break;
2055                                 case NS_TEMPLATE:
2056                                         $text = wfMsg( 'templatepage' );
2057                                         break;
2058                                 case NS_HELP:
2059                                         $text = wfMsg( 'viewhelppage' );
2060                                         break;
2061                                 case NS_CATEGORY:
2062                                         $text = wfMsg( 'categorypage' );
2063                                         break;
2064                                 default:
2065                                         $text = wfMsg( 'articlepage' );
2066                         }
2067                 } else {
2068                         $link = $this->mTitle->getTalkPage();
2069                         $text = wfMsg( 'talkpage' );
2070                 }
2071
2072                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
2073
2074                 return $s;
2075         }
2076
2077         function commentLink() {
2078                 global $wgOut;
2079
2080                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
2081                         return '';
2082                 }
2083
2084                 # __NEWSECTIONLINK___ changes behaviour here
2085                 # If it is present, the link points to this page, otherwise
2086                 # it points to the talk page
2087                 if ( $this->mTitle->isTalkPage() ) {
2088                         $title = $this->mTitle;
2089                 } elseif ( $wgOut->showNewSectionLink() ) {
2090                         $title = $this->mTitle;
2091                 } else {
2092                         $title = $this->mTitle->getTalkPage();
2093                 }
2094
2095                 return $this->link(
2096                         $title,
2097                         wfMsg( 'postcomment' ),
2098                         array(),
2099                         array(
2100                                 'action' => 'edit',
2101                                 'section' => 'new'
2102                         ),
2103                         array( 'known', 'noclasses' )
2104                 );
2105         }
2106
2107         function getUploadLink() {
2108                 global $wgUploadNavigationUrl;
2109
2110                 if ( $wgUploadNavigationUrl ) {
2111                         # Using an empty class attribute to avoid automatic setting of "external" class
2112                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
2113                 } else {
2114                         return $this->link(
2115                                 SpecialPage::getTitleFor( 'Upload' ),
2116                                 wfMsgHtml( 'upload' ),
2117                                 array(),
2118                                 array(),
2119                                 array( 'known', 'noclasses' )
2120                         );
2121                 }
2122         }
2123
2124         /**
2125          * Return a fully resolved style path url to images or styles stored in the common folder.
2126          * This method returns a url resolved using the configured skin style path
2127          * and includes the style version inside of the url.
2128          * @param $name String: The name or path of a skin resource file
2129          * @return String The fully resolved style path url including styleversion
2130          */
2131         function getCommonStylePath( $name ) {
2132                 global $wgStylePath, $wgStyleVersion;
2133                 return "$wgStylePath/common/$name?$wgStyleVersion";
2134         }
2135
2136         /**
2137          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
2138          * This method returns a url resolved using the configured skin style path
2139          * and includes the style version inside of the url.
2140          * @param $name String: The name or path of a skin resource file
2141          * @return String The fully resolved style path url including styleversion
2142          */
2143         function getSkinStylePath( $name ) {
2144                 global $wgStylePath, $wgStyleVersion;
2145                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
2146         }
2147
2148         /* these are used extensively in SkinTemplate, but also some other places */
2149         static function makeMainPageUrl( $urlaction = '' ) {
2150                 $title = Title::newMainPage();
2151                 self::checkTitle( $title, '' );
2152
2153                 return $title->getLocalURL( $urlaction );
2154         }
2155
2156         static function makeSpecialUrl( $name, $urlaction = '' ) {
2157                 $title = SpecialPage::getTitleFor( $name );
2158                 return $title->getLocalURL( $urlaction );
2159         }
2160
2161         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2162                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2163                 return $title->getLocalURL( $urlaction );
2164         }
2165
2166         static function makeI18nUrl( $name, $urlaction = '' ) {
2167                 $title = Title::newFromText( wfMsgForContent( $name ) );
2168                 self::checkTitle( $title, $name );
2169                 return $title->getLocalURL( $urlaction );
2170         }
2171
2172         static function makeUrl( $name, $urlaction = '' ) {
2173                 $title = Title::newFromText( $name );
2174                 self::checkTitle( $title, $name );
2175
2176                 return $title->getLocalURL( $urlaction );
2177         }
2178
2179         /**
2180          * If url string starts with http, consider as external URL, else
2181          * internal
2182          */
2183         static function makeInternalOrExternalUrl( $name ) {
2184                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2185                         return $name;
2186                 } else {
2187                         return self::makeUrl( $name );
2188                 }
2189         }
2190
2191         # this can be passed the NS number as defined in Language.php
2192         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2193                 $title = Title::makeTitleSafe( $namespace, $name );
2194                 self::checkTitle( $title, $name );
2195
2196                 return $title->getLocalURL( $urlaction );
2197         }
2198
2199         /* these return an array with the 'href' and boolean 'exists' */
2200         static function makeUrlDetails( $name, $urlaction = '' ) {
2201                 $title = Title::newFromText( $name );
2202                 self::checkTitle( $title, $name );
2203
2204                 return array(
2205                         'href' => $title->getLocalURL( $urlaction ),
2206                         'exists' => $title->getArticleID() != 0,
2207                 );
2208         }
2209
2210         /**
2211          * Make URL details where the article exists (or at least it's convenient to think so)
2212          */
2213         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2214                 $title = Title::newFromText( $name );
2215                 self::checkTitle( $title, $name );
2216
2217                 return array(
2218                         'href' => $title->getLocalURL( $urlaction ),
2219                         'exists' => true
2220                 );
2221         }
2222
2223         # make sure we have some title to operate on
2224         static function checkTitle( &$title, $name ) {
2225                 if ( !is_object( $title ) ) {
2226                         $title = Title::newFromText( $name );
2227                         if ( !is_object( $title ) ) {
2228                                 $title = Title::newFromText( '--error: link target missing--' );
2229                         }
2230                 }
2231         }
2232
2233         /**
2234          * Build an array that represents the sidebar(s), the navigation bar among them
2235          *
2236          * @return array
2237          */
2238         function buildSidebar() {
2239                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2240                 global $wgLang;
2241                 wfProfileIn( __METHOD__ );
2242
2243                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2244
2245                 if ( $wgEnableSidebarCache ) {
2246                         $cachedsidebar = $parserMemc->get( $key );
2247                         if ( $cachedsidebar ) {
2248                                 wfProfileOut( __METHOD__ );
2249                                 return $cachedsidebar;
2250                         }
2251                 }
2252
2253                 $bar = array();
2254                 $this->addToSidebar( $bar, 'sidebar' );
2255
2256                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2257                 if ( $wgEnableSidebarCache ) {
2258                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2259                 }
2260
2261                 wfProfileOut( __METHOD__ );
2262                 return $bar;
2263         }
2264         /**
2265          * Add content from a sidebar system message
2266          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2267          *
2268          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2269          *
2270          * @param &$bar array
2271          * @param $message String
2272          */
2273         function addToSidebar( &$bar, $message ) {
2274                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2275         }
2276
2277         /**
2278          * Add content from plain text
2279          * @since 1.17
2280          * @param &$bar array
2281          * @param $text string
2282          */
2283         function addToSidebarPlain( &$bar, $text ) {
2284                 $lines = explode( "\n", $text );
2285                 $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.
2286
2287                 $heading = '';
2288
2289                 foreach ( $lines as $line ) {
2290                         if ( strpos( $line, '*' ) !== 0 ) {
2291                                 continue;
2292                         }
2293
2294                         if ( strpos( $line, '**' ) !== 0 ) {
2295                                 $heading = trim( $line, '* ' );
2296                                 if ( !array_key_exists( $heading, $bar ) ) {
2297                                         $bar[$heading] = array();
2298                                 }
2299                         } else {
2300                                 $line = trim( $line, '* ' );
2301
2302                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2303                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2304                                         $link = wfMsgForContent( $line[0] );
2305
2306                                         if ( $link == '-' ) {
2307                                                 continue;
2308                                         }
2309
2310                                         $text = wfMsgExt( $line[1], 'parsemag' );
2311
2312                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2313                                                 $text = $line[1];
2314                                         }
2315
2316                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2317                                                 $link = $line[0];
2318                                         }
2319
2320                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2321                                                 $href = $link;
2322                                         } else {
2323                                                 $title = Title::newFromText( $link );
2324
2325                                                 if ( $title ) {
2326                                                         $title = $title->fixSpecialName();
2327                                                         $href = $title->getLocalURL();
2328                                                 } else {
2329                                                         $href = 'INVALID-TITLE';
2330                                                 }
2331                                         }
2332
2333                                         $bar[$heading][] = array(
2334                                                 'text' => $text,
2335                                                 'href' => $href,
2336                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2337                                                 'active' => false
2338                                         );
2339                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2340                                         global $wgParser, $wgTitle;
2341
2342                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2343
2344                                         $options = new ParserOptions();
2345                                         $options->setEditSection( false );
2346                                         $options->setInterfaceMessage( true );
2347                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $options )->getText();
2348                                 } else {
2349                                         continue;
2350                                 }
2351                         }
2352                 }
2353
2354                 if ( count( $wikiBar ) > 0 ) {
2355                         $bar = array_merge( $bar, $wikiBar );
2356                 }
2357
2358                 return $bar;
2359         }
2360
2361         /**
2362          * Should we include common/wikiprintable.css?  Skins that have their own
2363          * print stylesheet should override this and return false.  (This is an
2364          * ugly hack to get Monobook to play nicely with
2365          * OutputPage::headElement().)
2366          *
2367          * @return bool
2368          */
2369         public function commonPrintStylesheet() {
2370                 return true;
2371         }
2372
2373         /**
2374          * Gets new talk page messages for the current user.
2375          * @return MediaWiki message or if no new talk page messages, nothing
2376          */
2377         function getNewtalks() {
2378                 global $wgUser, $wgOut;
2379
2380                 $newtalks = $wgUser->getNewMessageLinks();
2381                 $ntl = '';
2382
2383                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2384                         $userTitle = $this->mUser->getUserPage();
2385                         $userTalkTitle = $userTitle->getTalkPage();
2386
2387                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2388                                 $newMessagesLink = $this->link(
2389                                         $userTalkTitle,
2390                                         wfMsgHtml( 'newmessageslink' ),
2391                                         array(),
2392                                         array( 'redirect' => 'no' ),
2393                                         array( 'known', 'noclasses' )
2394                                 );
2395
2396                                 $newMessagesDiffLink = $this->link(
2397                                         $userTalkTitle,
2398                                         wfMsgHtml( 'newmessagesdifflink' ),
2399                                         array(),
2400                                         array( 'diff' => 'cur' ),
2401                                         array( 'known', 'noclasses' )
2402                                 );
2403
2404                                 $ntl = wfMsg(
2405                                         'youhavenewmessages',
2406                                         $newMessagesLink,
2407                                         $newMessagesDiffLink
2408                                 );
2409                                 # Disable Squid cache
2410                                 $wgOut->setSquidMaxage( 0 );
2411                         }
2412                 } elseif ( count( $newtalks ) ) {
2413                         // _>" " for BC <= 1.16
2414                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2415                         $msgs = array();
2416
2417                         foreach ( $newtalks as $newtalk ) {
2418                                 $msgs[] = Xml::element(
2419                                         'a',
2420                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2421                                 );
2422                         }
2423                         $parts = implode( $sep, $msgs );
2424                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2425                         $wgOut->setSquidMaxage( 0 );
2426                 }
2427
2428                 return $ntl;
2429         }
2430 }