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