includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( ! defined( 'MEDIAWIKI' ) )
   7         die( 1 );
   8
   9 /**
  10  * The main skin class that provide methods and properties for all other skins.
  11  * This base class is also the "Standard" skin.
  12  *
  13  * See docs/skin.txt for more information.
  14  *
  15  * @ingroup Skins
  16  */
  17 class Skin extends Linker {
  18         /**#@+
  19          * @private
  20          */
  21         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  22         // How many search boxes have we made?  Avoid duplicate id's.
  23         protected $searchboxes = '';
  24         /**#@-*/
  25         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  26         protected $skinname = 'standard' ;
  27
  28         /** Constructor, call parent constructor */
  29         function Skin() { parent::__construct(); }
  30
  31         /**
  32          * Fetch the set of available skins.
  33          * @return array of strings
  34          * @static
  35          */
  36         static function getSkinNames() {
  37                 global $wgValidSkinNames;
  38                 static $skinsInitialised = false;
  39                 if ( !$skinsInitialised ) {
  40                         # Get a list of available skins
  41                         # Build using the regular expression '^(.*).php$'
  42                         # Array keys are all lower case, array value keep the case used by filename
  43                         #
  44                         wfProfileIn( __METHOD__ . '-init' );
  45                         global $wgStyleDirectory;
  46                         $skinDir = dir( $wgStyleDirectory );
  47
  48                         # while code from www.php.net
  49                         while (false !== ($file = $skinDir->read())) {
  50                                 // Skip non-PHP files, hidden files, and '.dep' includes
  51                                 $matches = array();
  52                                 if(preg_match('/^([^.]*)\.php$/',$file, $matches)) {
  53                                         $aSkin = $matches[1];
  54                                         $wgValidSkinNames[strtolower($aSkin)] = $aSkin;
  55                                 }
  56                         }
  57                         $skinDir->close();
  58                         $skinsInitialised = true;
  59                         wfProfileOut( __METHOD__ . '-init' );
  60                 }
  61                 return $wgValidSkinNames;
  62         }
  63
  64         /**
  65          * Fetch the list of usable skins in regards to $wgSkipSkins.
  66          * Useful for Special:Preferences and other places where you
  67          * only want to show skins users _can_ use.
  68          * @return array of strings
  69          */
  70         public static function getUsableSkins() {
  71                 global $wgSkipSkins;
  72                 $usableSkins = self::getSkinNames();
  73                 foreach ( $wgSkipSkins as $skip ) {
  74                         unset( $usableSkins[$skip] );
  75                 }
  76                 return $usableSkins;
  77         }
  78
  79         /**
  80          * Normalize a skin preference value to a form that can be loaded.
  81          * If a skin can't be found, it will fall back to the configured
  82          * default (or the old 'Classic' skin if that's broken).
  83          * @param string $key
  84          * @return string
  85          * @static
  86          */
  87         static function normalizeKey( $key ) {
  88                 global $wgDefaultSkin;
  89                 $skinNames = Skin::getSkinNames();
  90
  91                 if( $key == '' ) {
  92                         // Don't return the default immediately;
  93                         // in a misconfiguration we need to fall back.
  94                         $key = $wgDefaultSkin;
  95                 }
  96
  97                 if( isset( $skinNames[$key] ) ) {
  98                         return $key;
  99                 }
 100
 101                 // Older versions of the software used a numeric setting
 102                 // in the user preferences.
 103                 $fallback = array(
 104                         0 => $wgDefaultSkin,
 105                         1 => 'nostalgia',
 106                         2 => 'cologneblue' );
 107
 108                 if( isset( $fallback[$key] ) ){
 109                         $key = $fallback[$key];
 110                 }
 111
 112                 if( isset( $skinNames[$key] ) ) {
 113                         return $key;
 114                 } else {
 115                         return 'monobook';
 116                 }
 117         }
 118
 119         /**
 120          * Factory method for loading a skin of a given type
 121          * @param string $key 'monobook', 'standard', etc
 122          * @return Skin
 123          * @static
 124          */
 125         static function &newFromKey( $key ) {
 126                 global $wgStyleDirectory;
 127
 128                 $key = Skin::normalizeKey( $key );
 129
 130                 $skinNames = Skin::getSkinNames();
 131                 $skinName = $skinNames[$key];
 132                 $className = 'Skin'.ucfirst($key);
 133
 134                 # Grab the skin class and initialise it.
 135                 if ( !class_exists( $className ) ) {
 136                         // Preload base classes to work around APC/PHP5 bug
 137                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 138                         if( file_exists( $deps ) ) include_once( $deps );
 139                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 140
 141                         # Check if we got if not failback to default skin
 142                         if( !class_exists( $className ) ) {
 143                                 # DO NOT die if the class isn't found. This breaks maintenance
 144                                 # scripts and can cause a user account to be unrecoverable
 145                                 # except by SQL manipulation if a previously valid skin name
 146                                 # is no longer valid.
 147                                 wfDebug( "Skin class does not exist: $className\n" );
 148                                 $className = 'SkinMonobook';
 149                                 require_once( "{$wgStyleDirectory}/MonoBook.php" );
 150                         }
 151                 }
 152                 $skin = new $className;
 153                 return $skin;
 154         }
 155
 156         /** @return string path to the skin stylesheet */
 157         function getStylesheet() {
 158                 return 'common/wikistandard.css';
 159         }
 160
 161         /** @return string skin name */
 162         public function getSkinName() {
 163                 return $this->skinname;
 164         }
 165
 166         function qbSetting() {
 167                 global $wgOut, $wgUser;
 168
 169                 if ( $wgOut->isQuickbarSuppressed() ) { return 0; }
 170                 $q = $wgUser->getOption( 'quickbar', 0 );
 171                 return $q;
 172         }
 173
 174         function initPage( OutputPage $out ) {
 175                 global $wgFavicon, $wgAppleTouchIcon;
 176
 177                 wfProfileIn( __METHOD__ );
 178
 179                 if( false !== $wgFavicon ) {
 180                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 181                 }
 182
 183                 if( false !== $wgAppleTouchIcon ) {
 184                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 185                 }
 186
 187                 # OpenSearch description link
 188                 $out->addLink( array(
 189                         'rel' => 'search',
 190                         'type' => 'application/opensearchdescription+xml',
 191                         'href' => wfScript( 'opensearch_desc' ),
 192                         'title' => wfMsgForContent( 'opensearch-desc' ),
 193                 ));
 194
 195                 $this->addMetadataLinks($out);
 196
 197                 $this->mRevisionId = $out->mRevisionId;
 198
 199                 $this->preloadExistence();
 200
 201                 wfProfileOut( __METHOD__ );
 202         }
 203
 204         /**
 205          * Preload the existence of three commonly-requested pages in a single query
 206          */
 207         function preloadExistence() {
 208                 global $wgUser, $wgTitle;
 209
 210                 // User/talk link
 211                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 212
 213                 // Other tab link
 214                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
 215                         // nothing
 216                 } elseif ( $wgTitle->isTalkPage() ) {
 217                         $titles[] = $wgTitle->getSubjectPage();
 218                 } else {
 219                         $titles[] = $wgTitle->getTalkPage();
 220                 }
 221
 222                 $lb = new LinkBatch( $titles );
 223                 $lb->execute();
 224         }
 225
 226         function addMetadataLinks( OutputPage $out ) {
 227                 global $wgTitle, $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 228                 global $wgRightsPage, $wgRightsUrl;
 229
 230                 if( $out->isArticleRelated() ) {
 231                         # note: buggy CC software only reads first "meta" link
 232                         if( $wgEnableCreativeCommonsRdf ) {
 233                                 $out->addMetadataLink( array(
 234                                         'title' => 'Creative Commons',
 235                                         'type' => 'application/rdf+xml',
 236                                         'href' => $wgTitle->getLocalURL( 'action=creativecommons') ) );
 237                         }
 238                         if( $wgEnableDublinCoreRdf ) {
 239                                 $out->addMetadataLink( array(
 240                                         'title' => 'Dublin Core',
 241                                         'type' => 'application/rdf+xml',
 242                                         'href' => $wgTitle->getLocalURL( 'action=dublincore' ) ) );
 243                         }
 244                 }
 245                 $copyright = '';
 246                 if( $wgRightsPage ) {
 247                         $copy = Title::newFromText( $wgRightsPage );
 248                         if( $copy ) {
 249                                 $copyright = $copy->getLocalURL();
 250                         }
 251                 }
 252                 if( !$copyright && $wgRightsUrl ) {
 253                         $copyright = $wgRightsUrl;
 254                 }
 255                 if( $copyright ) {
 256                         $out->addLink( array(
 257                                 'rel' => 'copyright',
 258                                 'href' => $copyright ) );
 259                 }
 260         }
 261
 262         function setMembers(){
 263                 global $wgTitle, $wgUser;
 264                 $this->mTitle = $wgTitle;
 265                 $this->mUser = $wgUser;
 266                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 267                 $this->usercss = false;
 268         }
 269
 270         function outputPage( OutputPage $out ) {
 271                 global $wgDebugComments;
 272                 wfProfileIn( __METHOD__ );
 273
 274                 $this->setMembers();
 275                 $this->initPage( $out );
 276
 277                 // See self::afterContentHook() for documentation
 278                 $afterContent = $this->afterContentHook();
 279
 280                 $out->out( $out->headElement( $this ) );
 281
 282                 $out->out( "\n<body" );
 283                 $ops = $this->getBodyOptions();
 284                 foreach ( $ops as $name => $val ) {
 285                         $out->out( " $name='$val'" );
 286                 }
 287                 $out->out( ">\n" );
 288                 if ( $wgDebugComments ) {
 289                         $out->out( "<!-- Wiki debugging output:\n" .
 290                           $out->mDebugtext . "-->\n" );
 291                 }
 292
 293                 $out->out( $this->beforeContent() );
 294
 295                 $out->out( $out->mBodytext . "\n" );
 296
 297                 $out->out( $this->afterContent() );
 298
 299                 $out->out( $afterContent );
 300
 301                 $out->out( $this->bottomScripts() );
 302
 303                 $out->out( wfReportTime() );
 304
 305                 $out->out( "\n</body></html>" );
 306                 wfProfileOut( __METHOD__ );
 307         }
 308
 309         static function makeVariablesScript( $data ) {
 310                 global $wgJsMimeType;
 311
 312                 $r = array( "<script type= \"$wgJsMimeType\">/*<![CDATA[*/" );
 313                 foreach ( $data as $name => $value ) {
 314                         $encValue = Xml::encodeJsVar( $value );
 315                         $r[] = "var $name = $encValue;";
 316                 }
 317                 $r[] = "/*]]>*/</script>\n";
 318
 319                 return implode( "\n\t\t", $r );
 320         }
 321
 322         /**
 323          * Make a <script> tag containing global variables
 324          * @param array $data Associative array containing one element:
 325          *     skinname => the skin name
 326          * The odd calling convention is for backwards compatibility
 327          */
 328         static function makeGlobalVariablesScript( $data ) {
 329                 global $wgScript, $wgStylePath, $wgUser;
 330                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 331                 global $wgTitle, $wgCanonicalNamespaceNames, $wgOut, $wgArticle;
 332                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 333                 global $wgUseAjax, $wgAjaxWatch;
 334                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 335                 global $wgRestrictionTypes, $wgLivePreview;
 336                 global $wgMWSuggestTemplate, $wgDBname, $wgEnableMWSuggest;
 337
 338                 $ns = $wgTitle->getNamespace();
 339                 $nsname = isset( $wgCanonicalNamespaceNames[ $ns ] ) ? $wgCanonicalNamespaceNames[ $ns ] : $wgTitle->getNsText();
 340
 341                 $vars = array(
 342                         'skin' => $data['skinname'],
 343                         'stylepath' => $wgStylePath,
 344                         'wgArticlePath' => $wgArticlePath,
 345                         'wgScriptPath' => $wgScriptPath,
 346                         'wgScript' => $wgScript,
 347                         'wgVariantArticlePath' => $wgVariantArticlePath,
 348                         'wgActionPaths' => (object)$wgActionPaths,
 349                         'wgServer' => $wgServer,
 350                         'wgCanonicalNamespace' => $nsname,
 351                         'wgCanonicalSpecialPageName' => SpecialPage::resolveAlias( $wgTitle->getDBkey() ),
 352                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 353                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 354                         'wgTitle' => $wgTitle->getText(),
 355                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 356                         'wgArticleId' => $wgTitle->getArticleId(),
 357                         'wgIsArticle' => $wgOut->isArticle(),
 358                         'wgUserName' => $wgUser->isAnon() ? NULL : $wgUser->getName(),
 359                         'wgUserGroups' => $wgUser->isAnon() ? NULL : $wgUser->getEffectiveGroups(),
 360                         'wgUserLanguage' => $wgLang->getCode(),
 361                         'wgContentLanguage' => $wgContLang->getCode(),
 362                         'wgBreakFrames' => $wgBreakFrames,
 363                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 364                         'wgVersion' => $wgVersion,
 365                         'wgEnableAPI' => $wgEnableAPI,
 366                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 367                 );
 368
 369                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false )){
 370                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 371                         $vars['wgDBname'] = $wgDBname;
 372                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 373                         $vars['wgMWSuggestMessages'] = array( wfMsg('search-mwsuggest-enabled'), wfMsg('search-mwsuggest-disabled'));
 374                 }
 375
 376                 foreach( $wgRestrictionTypes as $type )
 377                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 378
 379                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
 380                         $vars['wgLivepreviewMessageLoading'] = wfMsg( 'livepreview-loading' );
 381                         $vars['wgLivepreviewMessageReady']   = wfMsg( 'livepreview-ready' );
 382                         $vars['wgLivepreviewMessageFailed']  = wfMsg( 'livepreview-failed' );
 383                         $vars['wgLivepreviewMessageError']   = wfMsg( 'livepreview-error' );
 384                 }
 385
 386                 if($wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 387                         $msgs = (object)array();
 388                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching' ) as $msgName ) {
 389                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 390                         }
 391                         $vars['wgAjaxWatch'] = $msgs;
 392                 }
 393
 394                 wfRunHooks('MakeGlobalVariablesScript', array(&$vars));
 395
 396                 return self::makeVariablesScript( $vars );
 397         }
 398
 399         function getHeadScripts( $allowUserJs ) {
 400                 global $wgStylePath, $wgUser, $wgJsMimeType, $wgStyleVersion;
 401
 402                 $vars = self::makeGlobalVariablesScript( array( 'skinname' => $this->getSkinName() ) );
 403
 404                 $r = array( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js?$wgStyleVersion\"></script>" );
 405                 global $wgUseSiteJs;
 406                 if ($wgUseSiteJs) {
 407                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
 408                         $r[] = "<script type=\"$wgJsMimeType\" src=\"".
 409                                 htmlspecialchars(self::makeUrl('-',
 410                                         "action=raw$jsCache&gen=js&useskin=" .
 411                                         urlencode( $this->getSkinName() ) ) ) .
 412                                 "\"><!-- site js --></script>";
 413                 }
 414                 if( $allowUserJs && $wgUser->isLoggedIn() ) {
 415                         $userpage = $wgUser->getUserPage();
 416                         $userjs = htmlspecialchars( self::makeUrl(
 417                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 418                                 'action=raw&ctype='.$wgJsMimeType));
 419                         $r[] = '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>";
 420                 }
 421                 return $vars . "\t\t" . implode ( "\n\t\t", $r );
 422         }
 423
 424         /**
 425          * To make it harder for someone to slip a user a fake
 426          * user-JavaScript or user-CSS preview, a random token
 427          * is associated with the login session. If it's not
 428          * passed back with the preview request, we won't render
 429          * the code.
 430          *
 431          * @param string $action
 432          * @return bool
 433          * @private
 434          */
 435         function userCanPreview( $action ) {
 436                 global $wgTitle, $wgRequest, $wgUser;
 437
 438                 if( $action != 'submit' )
 439                         return false;
 440                 if( !$wgRequest->wasPosted() )
 441                         return false;
 442                 if( !$wgTitle->userCanEditCssJsSubpage() )
 443                         return false;
 444                 return $wgUser->matchEditToken(
 445                         $wgRequest->getVal( 'wpEditToken' ) );
 446         }
 447
 448         /**
 449          * generated JavaScript action=raw&gen=js
 450          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 451          * nated together.  For some bizarre reason, it does *not* return any
 452          * custom user JS from subpages.  Huh?
 453          *
 454          * There's absolutely no reason to have separate Monobook/Common JSes.
 455          * Any JS that cares can just check the skin variable generated at the
 456          * top.  For now Monobook.js will be maintained, but it should be consi-
 457          * dered deprecated.
 458          *
 459          * @return string
 460          */
 461         public function generateUserJs() {
 462                 global $wgStylePath;
 463
 464                 wfProfileIn( __METHOD__ );
 465
 466                 $s = "/* generated javascript */\n";
 467                 $s .= "var skin = '" . Xml::escapeJsString( $this->getSkinName() ) . "';\n";
 468                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 469                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 470                 $commonJs = wfMsgForContent('common.js');
 471                 if ( !wfEmptyMsg ( 'common.js', $commonJs ) ) {
 472                         $s .= $commonJs;
 473                 }
 474
 475                 $s .= "\n\n/* MediaWiki:".ucfirst( $this->getSkinName() ).".js */\n";
 476                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 477                 // by checking for default message content
 478                 $msgKey = ucfirst( $this->getSkinName() ).'.js';
 479                 $userJS = wfMsgForContent($msgKey);
 480                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 481                         $s .= $userJS;
 482                 }
 483
 484                 wfProfileOut( __METHOD__ );
 485                 return $s;
 486         }
 487
 488         /**
 489          * generate user stylesheet for action=raw&gen=css
 490          */
 491         public function generateUserStylesheet() {
 492                 wfProfileIn( __METHOD__ );
 493                 $s = "/* generated user stylesheet */\n" .
 494                         $this->reallyGenerateUserStylesheet();
 495                 wfProfileOut( __METHOD__ );
 496                 return $s;
 497         }
 498
 499         /**
 500          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 501          */
 502         protected function reallyGenerateUserStylesheet(){
 503                 global $wgUser;
 504                 $s = '';
 505                 if (($undopt = $wgUser->getOption("underline")) < 2) {
 506                         $underline = $undopt ? 'underline' : 'none';
 507                         $s .= "a { text-decoration: $underline; }\n";
 508                 }
 509                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 510                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 511                 } else {
 512                         $s .= <<<END
 513 a.new, #quickbar a.new,
 514 a.stub, #quickbar a.stub {
 515         color: inherit;
 516 }
 517 a.new:after, #quickbar a.new:after {
 518         content: "?";
 519         color: #CC2200;
 520 }
 521 a.stub:after, #quickbar a.stub:after {
 522         content: "!";
 523         color: #772233;
 524 }
 525 END;
 526                 }
 527                 if( $wgUser->getOption( 'justify' ) ) {
 528                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 529                 }
 530                 if( !$wgUser->getOption( 'showtoc' ) ) {
 531                         $s .= "#toc { display: none; }\n";
 532                 }
 533                 if( !$wgUser->getOption( 'editsection' ) ) {
 534                         $s .= ".editsection { display: none; }\n";
 535                 }
 536                 return $s;
 537         }
 538
 539         /**
 540          * @private
 541          */
 542         function setupUserCss( OutputPage $out ) {
 543                 global $wgRequest, $wgContLang, $wgUser;
 544                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 545
 546                 wfProfileIn( __METHOD__ );
 547
 548                 $this->setupSkinUserCss( $out );
 549
 550                 $siteargs = array(
 551                         'action' => 'raw',
 552                         'maxage' => $wgSquidMaxage,
 553                 );
 554                 if( $wgUser->isLoggedIn() ) {
 555                         // Ensure that logged-in users' generated CSS isn't clobbered
 556                         // by anons' publicly cacheable generated CSS.
 557                         $siteargs['smaxage'] = '0';
 558                         $siteargs['ts'] = $wgUser->mTouched;
 559                 }
 560
 561                 // Add any extension CSS
 562                 foreach( $out->getExtStyle() as $tag ) {
 563                         $out->addStyle( $tag['href'] );
 564                 }
 565
 566                 // If we use the site's dynamic CSS, throw that in, too
 567                 // Per-site custom styles
 568                 if( $wgUseSiteCss ) {
 569                         $query = wfArrayToCGI( array(
 570                                 'usemsgcache' => 'yes',
 571                                 'ctype' => 'text/css',
 572                                 'smaxage' => $wgSquidMaxage
 573                         ) + $siteargs );
 574                         # Site settings must override extension css! (bug 15025)
 575                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI) );
 576                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 577                 }
 578
 579                 // Per-user styles based on preferences
 580                 $siteargs['gen'] = 'css';
 581                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 582                         $siteargs['useskin'] = $us;
 583                 }
 584                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 585
 586                 // Per-user custom style pages
 587                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 588                         $action = $wgRequest->getVal('action');
 589                         # If we're previewing the CSS page, use it
 590                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 591                                 $previewCss = $wgRequest->getText('wpTextbox1');
 592                                 // @FIXME: properly escape the cdata!
 593                                 $this->usercss = "/*<![CDATA[*/\n" . $previewCss . "/*]]>*/";
 594                         } else {
 595                                 $out->addStyle( self::makeUrl($this->userpage .'/'.$this->getSkinName() .'.css',
 596                                         'action=raw&ctype=text/css') );
 597                         }
 598                 }
 599
 600                 wfProfileOut( __METHOD__ );
 601         }
 602
 603         /**
 604          * Add skin specific stylesheets
 605          * @param $out OutputPage
 606          */
 607         function setupSkinUserCss( OutputPage $out ) {
 608                 $out->addStyle( 'common/shared.css' );
 609                 $out->addStyle( 'common/oldshared.css' );
 610                 $out->addStyle( $this->getStylesheet() );
 611                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 612         }
 613
 614         function getBodyOptions() {
 615                 global $wgUser, $wgTitle, $wgOut, $wgRequest, $wgContLang;
 616
 617                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 618
 619                 if ( 0 != $wgTitle->getNamespace() ) {
 620                         $a = array( 'bgcolor' => '#ffffec' );
 621                 }
 622                 else $a = array( 'bgcolor' => '#FFFFFF' );
 623                 if($wgOut->isArticle() && $wgUser->getOption('editondblclick') &&
 624                   $wgTitle->quickUserCan( 'edit' ) ) {
 625                         $s = $wgTitle->getFullURL( $this->editUrlOptions() );
 626                         $s = 'document.location = "' .wfEscapeJSString( $s ) .'";';
 627                         $a += array ('ondblclick' => $s);
 628
 629                 }
 630                 $a['onload'] = $wgOut->getOnloadHandler();
 631                 $a['class'] =
 632                         'mediawiki' .
 633                         ' '.( $wgContLang->isRTL() ? "rtl" : "ltr" ).
 634                         ' '.$this->getPageClasses( $wgTitle ) .
 635                         ' skin-'. Sanitizer::escapeClass( $this->getSkinName( ) );
 636                 return $a;
 637         }
 638
 639         function getPageClasses( $title ) {
 640                 $numeric = 'ns-'.$title->getNamespace();
 641                 if( $title->getNamespace() == NS_SPECIAL ) {
 642                         $type = "ns-special";
 643                 } elseif( $title->isTalkPage() ) {
 644                         $type = "ns-talk";
 645                 } else {
 646                         $type = "ns-subject";
 647                 }
 648                 $name = Sanitizer::escapeClass( 'page-'.$title->getPrefixedText() );
 649                 return "$numeric $type $name";
 650         }
 651
 652         /**
 653          * URL to the logo
 654          */
 655         function getLogo() {
 656                 global $wgLogo;
 657                 return $wgLogo;
 658         }
 659
 660         /**
 661          * This will be called immediately after the <body> tag.  Split into
 662          * two functions to make it easier to subclass.
 663          */
 664         function beforeContent() {
 665                 return $this->doBeforeContent();
 666         }
 667
 668         function doBeforeContent() {
 669                 global $wgContLang;
 670                 $fname = 'Skin::doBeforeContent';
 671                 wfProfileIn( $fname );
 672
 673                 $s = '';
 674                 $qb = $this->qbSetting();
 675
 676                 if( $langlinks = $this->otherLanguages() ) {
 677                         $rows = 2;
 678                         $borderhack = '';
 679                 } else {
 680                         $rows = 1;
 681                         $langlinks = false;
 682                         $borderhack = 'class="top"';
 683                 }
 684
 685                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 686                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 687
 688                 $shove = ( $qb != 0 );
 689                 $left = ( $qb == 1 || $qb == 3 );
 690                 if( $wgContLang->isRTL() ) $left = !$left;
 691
 692                 if( !$shove ) {
 693                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 694                           $this->logoText() . '</td>';
 695                 } elseif( $left ) {
 696                         $s .= $this->getQuickbarCompensator( $rows );
 697                 }
 698                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 699                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 700
 701                 $s .= $this->topLinks() ;
 702                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 703
 704                 $r = $wgContLang->isRTL() ? "left" : "right";
 705                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 706                 $s .= $this->nameAndLogin();
 707                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 708
 709                 if ( $langlinks ) {
 710                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 711                 }
 712
 713                 if ( $shove && !$left ) { # Right
 714                         $s .= $this->getQuickbarCompensator( $rows );
 715                 }
 716                 $s .= "</tr>\n</table>\n</div>\n";
 717                 $s .= "\n<div id='article'>\n";
 718
 719                 $notice = wfGetSiteNotice();
 720                 if( $notice ) {
 721                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 722                 }
 723                 $s .= $this->pageTitle();
 724                 $s .= $this->pageSubtitle() ;
 725                 $s .= $this->getCategories();
 726                 wfProfileOut( $fname );
 727                 return $s;
 728         }
 729
 730
 731         function getCategoryLinks() {
 732                 global $wgOut, $wgTitle, $wgUseCategoryBrowser;
 733                 global $wgContLang, $wgUser;
 734
 735                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 736
 737                 # Separator
 738                 $sep = wfMsgHtml( 'catseparator' );
 739
 740                 // Use Unicode bidi embedding override characters,
 741                 // to make sure links don't smash each other up in ugly ways.
 742                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 743                 $embed = "<span dir='$dir'>";
 744                 $pop = '</span>';
 745
 746                 $allCats = $wgOut->getCategoryLinks();
 747                 $s = '';
 748                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 749                 if ( !empty( $allCats['normal'] ) ) {
 750                         $t = $embed . implode ( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 751
 752                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 753                         $s .= '<div id="mw-normal-catlinks">' .
 754                                 $this->link( Title::newFromText( wfMsgForContent('pagecategorieslink') ), $msg )
 755                                 . $colon . $t . '</div>';
 756                 }
 757
 758                 # Hidden categories
 759                 if ( isset( $allCats['hidden'] ) ) {
 760                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 761                                 $class ='mw-hidden-cats-user-shown';
 762                         } elseif ( $wgTitle->getNamespace() == NS_CATEGORY ) {
 763                                 $class = 'mw-hidden-cats-ns-shown';
 764                         } else {
 765                                 $class = 'mw-hidden-cats-hidden';
 766                         }
 767                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 768                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 769                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 770                                 "</div>";
 771                 }
 772
 773                 # optional 'dmoz-like' category browser. Will be shown under the list
 774                 # of categories an article belong to
 775                 if( $wgUseCategoryBrowser ){
 776                         $s .= '<br /><hr />';
 777
 778                         # get a big array of the parents tree
 779                         $parenttree = $wgTitle->getParentCategoryTree();
 780                         # Skin object passed by reference cause it can not be
 781                         # accessed under the method subfunction drawCategoryBrowser
 782                         $tempout = explode("\n", Skin::drawCategoryBrowser($parenttree, $this) );
 783                         # Clean out bogus first entry and sort them
 784                         unset($tempout[0]);
 785                         asort($tempout);
 786                         # Output one per line
 787                         $s .= implode("<br />\n", $tempout);
 788                 }
 789
 790                 return $s;
 791         }
 792
 793         /** Render the array as a serie of links.
 794          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 795          * @param &skin Object: skin passed by reference
 796          * @return String separated by &gt;, terminate with "\n"
 797          */
 798         function drawCategoryBrowser( $tree, &$skin ){
 799                 $return = '';
 800                 foreach ($tree as $element => $parent) {
 801                         if (empty($parent)) {
 802                                 # element start a new list
 803                                 $return .= "\n";
 804                         } else {
 805                                 # grab the others elements
 806                                 $return .= Skin::drawCategoryBrowser($parent, $skin) . ' &gt; ';
 807                         }
 808                         # add our current element to the list
 809                         $eltitle = Title::newFromText($element);
 810                         $return .=  $skin->link( $eltitle, $eltitle->getText() ) ;
 811                 }
 812                 return $return;
 813         }
 814
 815         function getCategories() {
 816                 $catlinks=$this->getCategoryLinks();
 817
 818                 $classes = 'catlinks';
 819
 820                 if( strpos( $catlinks, '<div id="mw-normal-catlinks">' ) === false &&
 821                         strpos( $catlinks, '<div id="mw-hidden-catlinks" class="mw-hidden-cats-hidden">' ) !== false ) {
 822                         $classes .= ' catlinks-allhidden';
 823                 }
 824
 825                 if( !empty( $catlinks ) ){
 826                         return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 827                 }
 828         }
 829
 830         function getQuickbarCompensator( $rows = 1 ) {
 831                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 832         }
 833
 834         /**
 835          * This runs a hook to allow extensions placing their stuff after content
 836          * and article metadata (e.g. categories).
 837          * Note: This function has nothing to do with afterContent().
 838          *
 839          * This hook is placed here in order to allow using the same hook for all
 840          * skins, both the SkinTemplate based ones and the older ones, which directly
 841          * use this class to get their data.
 842          *
 843          * The output of this function gets processed in SkinTemplate::outputPage() for
 844          * the SkinTemplate based skins, all other skins should directly echo it.
 845          *
 846          * Returns an empty string by default, if not changed by any hook function.
 847          */
 848         protected function afterContentHook() {
 849                 $data = "";
 850
 851                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ){
 852                         // adding just some spaces shouldn't toggle the output
 853                         // of the whole <div/>, so we use trim() here
 854                         if( trim( $data ) != '' ){
 855                                 // Doing this here instead of in the skins to
 856                                 // ensure that the div has the same ID in all
 857                                 // skins
 858                                 $data = "<div id='mw-data-after-content'>\n" .
 859                                         "\t$data\n" .
 860                                         "</div>\n";
 861                         }
 862                 } else {
 863                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 864                 }
 865
 866                 return $data;
 867         }
 868
 869         /**
 870          * This gets called shortly before the </body> tag.
 871          * @return String HTML to be put before </body>
 872          */
 873         function afterContent() {
 874                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 875                 return $printfooter . $this->doAfterContent();
 876         }
 877
 878         /**
 879          * This gets called shortly before the </body> tag.
 880          * @return String HTML-wrapped JS code to be put before </body>
 881          */
 882         function bottomScripts() {
 883                 global $wgJsMimeType;
 884                 $bottomScriptText = "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 885                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 886                 return $bottomScriptText;
 887         }
 888
 889         /** @return string Retrievied from HTML text */
 890         function printSource() {
 891                 global $wgTitle;
 892                 $url = htmlspecialchars( $wgTitle->getFullURL() );
 893                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 894         }
 895
 896         function printFooter() {
 897                 return "<p>" .  $this->printSource() .
 898                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 899         }
 900
 901         /** overloaded by derived classes */
 902         function doAfterContent() { return "</div></div>"; }
 903
 904         function pageTitleLinks() {
 905                 global $wgOut, $wgTitle, $wgUser, $wgRequest;
 906
 907                 $oldid = $wgRequest->getVal( 'oldid' );
 908                 $diff = $wgRequest->getVal( 'diff' );
 909                 $action = $wgRequest->getText( 'action' );
 910
 911                 $s = $this->printableLink();
 912                 $disclaimer = $this->disclaimerLink(); # may be empty
 913                 if( $disclaimer ) {
 914                         $s .= ' | ' . $disclaimer;
 915                 }
 916                 $privacy = $this->privacyLink(); # may be empty too
 917                 if( $privacy ) {
 918                         $s .= ' | ' . $privacy;
 919                 }
 920
 921                 if ( $wgOut->isArticleRelated() ) {
 922                         if ( $wgTitle->getNamespace() == NS_IMAGE ) {
 923                                 $name = $wgTitle->getDBkey();
 924                                 $image = wfFindFile( $wgTitle );
 925                                 if( $image ) {
 926                                         $link = htmlspecialchars( $image->getURL() );
 927                                         $style = $this->getInternalLinkAttributes( $link, $name );
 928                                         $s .= " | <a href=\"{$link}\"{$style}>{$name}</a>";
 929                                 }
 930                         }
 931                 }
 932                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 933                         $s .= ' | ' . $this->makeKnownLinkObj( $wgTitle,
 934                                         wfMsg( 'currentrev' ) );
 935                 }
 936
 937                 if ( $wgUser->getNewtalk() ) {
 938                         # do not show "You have new messages" text when we are viewing our
 939                         # own talk page
 940                         if( !$wgTitle->equals( $wgUser->getTalkPage() ) ) {
 941                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessageslink' ), 'redirect=no' );
 942                                 $dl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessagesdifflink' ), 'diff=cur' );
 943                                 $s.= ' | <strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 944                                 # disable caching
 945                                 $wgOut->setSquidMaxage(0);
 946                                 $wgOut->enableClientCache(false);
 947                         }
 948                 }
 949
 950                 $undelete = $this->getUndeleteLink();
 951                 if( !empty( $undelete ) ) {
 952                         $s .= ' | '.$undelete;
 953                 }
 954                 return $s;
 955         }
 956
 957         function getUndeleteLink() {
 958                 global $wgUser, $wgTitle, $wgContLang, $wgLang, $action;
 959                 if(     $wgUser->isAllowed( 'deletedhistory' ) &&
 960                         (($wgTitle->getArticleId() == 0) || ($action == "history")) &&
 961                         ($n = $wgTitle->isDeleted() ) )
 962                 {
 963                         if ( $wgUser->isAllowed( 'undelete' ) ) {
 964                                 $msg = 'thisisdeleted';
 965                         } else {
 966                                 $msg = 'viewdeleted';
 967                         }
 968                         return wfMsg( $msg,
 969                                 $this->makeKnownLinkObj(
 970                                         SpecialPage::getTitleFor( 'Undelete', $wgTitle->getPrefixedDBkey() ),
 971                                         wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ) ) );
 972                 }
 973                 return '';
 974         }
 975
 976         function printableLink() {
 977                 global $wgOut, $wgFeedClasses, $wgRequest;
 978
 979                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
 980
 981                 $s = "<a href=\"$printurl\">" . wfMsg( 'printableversion' ) . '</a>';
 982                 if( $wgOut->isSyndicated() ) {
 983                         foreach( $wgFeedClasses as $format => $class ) {
 984                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
 985                                 $s .= " | <a href=\"$feedurl\">{$format}</a>";
 986                         }
 987                 }
 988                 return $s;
 989         }
 990
 991         function pageTitle() {
 992                 global $wgOut;
 993                 $s = '<h1 class="pagetitle">' . htmlspecialchars( $wgOut->getPageTitle() ) . '</h1>';
 994                 return $s;
 995         }
 996
 997         function pageSubtitle() {
 998                 global $wgOut;
 999
1000                 $sub = $wgOut->getSubtitle();
1001                 if ( '' == $sub ) {
1002                         global $wgExtraSubtitle;
1003                         $sub = wfMsg( 'tagline' ) . $wgExtraSubtitle;
1004                 }
1005                 $subpages = $this->subPageSubtitle();
1006                 $sub .= !empty($subpages)?"</p><p class='subpages'>$subpages":'';
1007                 $s = "<p class='subtitle'>{$sub}</p>\n";
1008                 return $s;
1009         }
1010
1011         function subPageSubtitle() {
1012                 $subpages = '';
1013                 if(!wfRunHooks('SkinSubPageSubtitle', array(&$subpages)))
1014                         return $subpages;
1015
1016                 global $wgOut, $wgTitle;
1017                 if($wgOut->isArticle() && MWNamespace::hasSubpages( $wgTitle->getNamespace() )) {
1018                         $ptext=$wgTitle->getPrefixedText();
1019                         if(preg_match('/\//',$ptext)) {
1020                                 $links = explode('/',$ptext);
1021                                 array_pop( $links );
1022                                 $c = 0;
1023                                 $growinglink = '';
1024                                 $display = '';
1025                                 foreach($links as $link) {
1026                                         $growinglink .= $link;
1027                                         $display .= $link;
1028                                         $linkObj = Title::newFromText( $growinglink );
1029                                         if( is_object( $linkObj ) && $linkObj->exists() ){
1030                                                 $getlink = $this->makeKnownLinkObj( $linkObj, htmlspecialchars( $display ) );
1031                                                 $c++;
1032                                                 if ($c>1) {
1033                                                         $subpages .= ' | ';
1034                                                 } else  {
1035                                                         $subpages .= '&lt; ';
1036                                                 }
1037                                                 $subpages .= $getlink;
1038                                                 $display = '';
1039                                         } else {
1040                                                 $display .= '/';
1041                                         }
1042                                         $growinglink .= '/';
1043                                 }
1044                         }
1045                 }
1046                 return $subpages;
1047         }
1048
1049         /**
1050          * Returns true if the IP should be shown in the header
1051          */
1052         function showIPinHeader() {
1053                 global $wgShowIPinHeader;
1054                 return $wgShowIPinHeader && session_id() != '';
1055         }
1056
1057         function nameAndLogin() {
1058                 global $wgUser, $wgTitle, $wgLang, $wgContLang;
1059
1060                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1061
1062                 $ret = '';
1063                 if ( $wgUser->isAnon() ) {
1064                         if( $this->showIPinHeader() ) {
1065                                 $name = wfGetIP();
1066
1067                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1068                                         $wgLang->getNsText( NS_TALK ) );
1069
1070                                 $ret .= "$name ($talkLink)";
1071                         } else {
1072                                 $ret .= wfMsg( 'notloggedin' );
1073                         }
1074
1075                         $returnTo = $wgTitle->getPrefixedDBkey();
1076                         $query = array();
1077                         if ( $logoutPage != $returnTo ) {
1078                                 $query['returnto'] = $returnTo;
1079                         }
1080
1081                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1082                                 ? 'nav-login-createaccount'
1083                                 : 'login';
1084                         $ret .= "\n<br />" . $this->link(
1085                                 SpecialPage::getTitleFor( 'Userlogin' ),
1086                                 wfMsg( $loginlink ), array(), $query
1087                         );
1088                 } else {
1089                         $returnTo = $wgTitle->getPrefixedDBkey();
1090                         $talkLink = $this->link( $wgUser->getTalkPage(),
1091                                 $wgLang->getNsText( NS_TALK ) );
1092
1093                         $ret .= $this->link( $wgUser->getUserPage(),
1094                                 htmlspecialchars( $wgUser->getName() ) );
1095                         $ret .= " ($talkLink)<br />";
1096                         $ret .= $this->link(
1097                                 SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1098                                 array(), array( 'returnto' => $returnTo )
1099                         );
1100                         $ret .= ' | ' . $this->specialLink( 'preferences' );
1101                 }
1102                 $ret .= ' | ' . $this->link(
1103                         Title::newFromText( wfMsgForContent( 'helppage' ) ),
1104                         wfMsg( 'help' )
1105                 );
1106
1107                 return $ret;
1108         }
1109
1110         function getSearchLink() {
1111                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1112                 return $searchPage->getLocalURL();
1113         }
1114
1115         function escapeSearchLink() {
1116                 return htmlspecialchars( $this->getSearchLink() );
1117         }
1118
1119         function searchForm() {
1120                 global $wgRequest;
1121                 $search = $wgRequest->getText( 'search' );
1122
1123                 $s = '<form id="searchform'.$this->searchboxes.'" name="search" class="inline" method="post" action="'
1124                   . $this->escapeSearchLink() . "\">\n"
1125                   . '<input type="text" id="searchInput'.$this->searchboxes.'" name="search" size="19" value="'
1126                   . htmlspecialchars(substr($search,0,256)) . "\" />\n"
1127                   . '<input type="submit" name="go" value="' . wfMsg ('searcharticle') . '" />&nbsp;'
1128                   . '<input type="submit" name="fulltext" value="' . wfMsg ('searchbutton') . "\" />\n</form>";
1129
1130                 // Ensure unique id's for search boxes made after the first
1131                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1132
1133                 return $s;
1134         }
1135
1136         function topLinks() {
1137                 global $wgOut;
1138                 $sep = " |\n";
1139
1140                 $s = $this->mainPageLink() . $sep
1141                   . $this->specialLink( 'recentchanges' );
1142
1143                 if ( $wgOut->isArticleRelated() ) {
1144                         $s .=  $sep . $this->editThisPage()
1145                           . $sep . $this->historyLink();
1146                 }
1147                 # Many people don't like this dropdown box
1148                 #$s .= $sep . $this->specialPagesList();
1149
1150                 $s .= $this->variantLinks();
1151
1152                 $s .= $this->extensionTabLinks();
1153
1154                 return $s;
1155         }
1156
1157         /**
1158          * Compatibility for extensions adding functionality through tabs.
1159          * Eventually these old skins should be replaced with SkinTemplate-based
1160          * versions, sigh...
1161          * @return string
1162          */
1163         function extensionTabLinks() {
1164                 $tabs = array();
1165                 $s = '';
1166                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1167                 foreach( $tabs as $tab ) {
1168                         $s .= ' | ' . Xml::element( 'a',
1169                                 array( 'href' => $tab['href'] ),
1170                                 $tab['text'] );
1171                 }
1172                 return $s;
1173         }
1174
1175         /**
1176          * Language/charset variant links for classic-style skins
1177          * @return string
1178          */
1179         function variantLinks() {
1180                 $s = '';
1181                 /* show links to different language variants */
1182                 global $wgDisableLangConversion, $wgContLang, $wgTitle;
1183                 $variants = $wgContLang->getVariants();
1184                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1185                         foreach( $variants as $code ) {
1186                                 $varname = $wgContLang->getVariantname( $code );
1187                                 if( $varname == 'disable' )
1188                                         continue;
1189                                 $s .= ' | <a href="' . $wgTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>';
1190                         }
1191                 }
1192                 return $s;
1193         }
1194
1195         function bottomLinks() {
1196                 global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
1197                 $sep = " |\n";
1198
1199                 $s = '';
1200                 if ( $wgOut->isArticleRelated() ) {
1201                         $s .= '<strong>' . $this->editThisPage() . '</strong>';
1202                         if ( $wgUser->isLoggedIn() ) {
1203                                 $s .= $sep . $this->watchThisPage();
1204                         }
1205                         $s .= $sep . $this->talkLink()
1206                           . $sep . $this->historyLink()
1207                           . $sep . $this->whatLinksHere()
1208                           . $sep . $this->watchPageLinksLink();
1209
1210                         if ($wgUseTrackbacks)
1211                                 $s .= $sep . $this->trackbackLink();
1212
1213                         if ( $wgTitle->getNamespace() == NS_USER
1214                             || $wgTitle->getNamespace() == NS_USER_TALK )
1215
1216                         {
1217                                 $id=User::idFromName($wgTitle->getText());
1218                                 $ip=User::isIP($wgTitle->getText());
1219
1220                                 if($id || $ip) { # both anons and non-anons have contri list
1221                                         $s .= $sep . $this->userContribsLink();
1222                                 }
1223                                 if( $this->showEmailUser( $id ) ) {
1224                                         $s .= $sep . $this->emailUserLink();
1225                                 }
1226                         }
1227                         if ( $wgTitle->getArticleId() ) {
1228                                 $s .= "\n<br />";
1229                                 if($wgUser->isAllowed('delete')) { $s .= $this->deleteThisPage(); }
1230                                 if($wgUser->isAllowed('protect')) { $s .= $sep . $this->protectThisPage(); }
1231                                 if($wgUser->isAllowed('move')) { $s .= $sep . $this->moveThisPage(); }
1232                         }
1233                         $s .= "<br />\n" . $this->otherLanguages();
1234                 }
1235                 return $s;
1236         }
1237
1238         function pageStats() {
1239                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1240                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgTitle, $wgPageShowWatchingUsers;
1241
1242                 $oldid = $wgRequest->getVal( 'oldid' );
1243                 $diff = $wgRequest->getVal( 'diff' );
1244                 if ( ! $wgOut->isArticle() ) { return ''; }
1245                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1246                 if ( 0 == $wgArticle->getID() ) { return ''; }
1247
1248                 $s = '';
1249                 if ( !$wgDisableCounters ) {
1250                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1251                         if ( $count ) {
1252                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1253                         }
1254                 }
1255
1256                 if( $wgMaxCredits != 0 ){
1257                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1258                 } else {
1259                         $s .= $this->lastModified();
1260                 }
1261
1262                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1263                         $dbr = wfGetDB( DB_SLAVE );
1264                         $watchlist = $dbr->tableName( 'watchlist' );
1265                         $sql = "SELECT COUNT(*) AS n FROM $watchlist
1266                                 WHERE wl_title='" . $dbr->strencode($wgTitle->getDBkey()) .
1267                                 "' AND  wl_namespace=" . $wgTitle->getNamespace() ;
1268                         $res = $dbr->query( $sql, 'Skin::pageStats');
1269                         $x = $dbr->fetchObject( $res );
1270
1271                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1272                                 array( 'parseinline' ), $wgLang->formatNum($x->n)
1273                         );
1274                 }
1275
1276                 return $s . ' ' .  $this->getCopyright();
1277         }
1278
1279         function getCopyright( $type = 'detect' ) {
1280                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
1281
1282                 if ( $type == 'detect' ) {
1283                         $oldid = $wgRequest->getVal( 'oldid' );
1284                         $diff = $wgRequest->getVal( 'diff' );
1285
1286                         if ( !is_null( $oldid ) && is_null( $diff ) && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1287                                 $type = 'history';
1288                         } else {
1289                                 $type = 'normal';
1290                         }
1291                 }
1292
1293                 if ( $type == 'history' ) {
1294                         $msg = 'history_copyright';
1295                 } else {
1296                         $msg = 'copyright';
1297                 }
1298
1299                 $out = '';
1300                 if( $wgRightsPage ) {
1301                         $link = $this->makeKnownLink( $wgRightsPage, $wgRightsText );
1302                 } elseif( $wgRightsUrl ) {
1303                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1304                 } else {
1305                         # Give up now
1306                         return $out;
1307                 }
1308                 $out .= wfMsgForContent( $msg, $link );
1309                 return $out;
1310         }
1311
1312         function getCopyrightIcon() {
1313                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1314                 $out = '';
1315                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1316                         $out = $wgCopyrightIcon;
1317                 } else if ( $wgRightsIcon ) {
1318                         $icon = htmlspecialchars( $wgRightsIcon );
1319                         if ( $wgRightsUrl ) {
1320                                 $url = htmlspecialchars( $wgRightsUrl );
1321                                 $out .= '<a href="'.$url.'">';
1322                         }
1323                         $text = htmlspecialchars( $wgRightsText );
1324                         $out .= "<img src=\"$icon\" alt='$text' />";
1325                         if ( $wgRightsUrl ) {
1326                                 $out .= '</a>';
1327                         }
1328                 }
1329                 return $out;
1330         }
1331
1332         function getPoweredBy() {
1333                 global $wgStylePath;
1334                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1335                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="Powered by MediaWiki" /></a>';
1336                 return $img;
1337         }
1338
1339         function lastModified() {
1340                 global $wgLang, $wgArticle;
1341                 if( $this->mRevisionId ) {
1342                         $timestamp = Revision::getTimestampFromId( $this->mRevisionId, $wgArticle->getId() );
1343                 } else {
1344                         $timestamp = $wgArticle->getTimestamp();
1345                 }
1346                 if ( $timestamp ) {
1347                         $d = $wgLang->date( $timestamp, true );
1348                         $t = $wgLang->time( $timestamp, true );
1349                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1350                 } else {
1351                         $s = '';
1352                 }
1353                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1354                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1355                 }
1356                 return $s;
1357         }
1358
1359         function logoText( $align = '' ) {
1360                 if ( '' != $align ) { $a = " align='{$align}'"; }
1361                 else { $a = ''; }
1362
1363                 $mp = wfMsg( 'mainpage' );
1364                 $mptitle = Title::newMainPage();
1365                 $url = ( is_object($mptitle) ? $mptitle->escapeLocalURL() : '' );
1366
1367                 $logourl = $this->getLogo();
1368                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1369                 return $s;
1370         }
1371
1372         /**
1373          * show a drop-down box of special pages
1374          */
1375         function specialPagesList() {
1376                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1377                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1378                 foreach ( $pages as $name => $page ) {
1379                         $pages[$name] = $page->getDescription();
1380                 }
1381
1382                 $go = wfMsg( 'go' );
1383                 $sp = wfMsg( 'specialpages' );
1384                 $spp = $wgContLang->specialPage( 'Specialpages' );
1385
1386                 $s = '<form id="specialpages" method="get" class="inline" ' .
1387                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1388                 $s .= "<select name=\"wpDropdown\">\n";
1389                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1390
1391
1392                 foreach ( $pages as $name => $desc ) {
1393                         $p = $wgContLang->specialPage( $name );
1394                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1395                 }
1396                 $s .= "</select>\n";
1397                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1398                 $s .= "</form>\n";
1399                 return $s;
1400         }
1401
1402         function mainPageLink() {
1403                 $s = $this->makeKnownLinkObj( Title::newMainPage(), wfMsg( 'mainpage' ) );
1404                 return $s;
1405         }
1406
1407         function copyrightLink() {
1408                 $s = $this->makeKnownLink( wfMsgForContent( 'copyrightpage' ),
1409                   wfMsg( 'copyrightpagename' ) );
1410                 return $s;
1411         }
1412
1413         private function footerLink ( $desc, $page ) {
1414                 // if the link description has been set to "-" in the default language,
1415                 if ( wfMsgForContent( $desc )  == '-') {
1416                         // then it is disabled, for all languages.
1417                         return '';
1418                 } else {
1419                         // Otherwise, we display the link for the user, described in their
1420                         // language (which may or may not be the same as the default language),
1421                         // but we make the link target be the one site-wide page.
1422                         return $this->makeKnownLink( wfMsgForContent( $page ),
1423                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) ) );
1424                 }
1425         }
1426
1427         function privacyLink() {
1428                 return $this->footerLink( 'privacy', 'privacypage' );
1429         }
1430
1431         function aboutLink() {
1432                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1433         }
1434
1435         function disclaimerLink() {
1436                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1437         }
1438
1439         function editThisPage() {
1440                 global $wgOut, $wgTitle;
1441
1442                 if ( !$wgOut->isArticleRelated() ) {
1443                         $s = wfMsg( 'protectedpage' );
1444                 } else {
1445                         if( $wgTitle->quickUserCan( 'edit' ) && $wgTitle->exists() ) {
1446                                 $t = wfMsg( 'editthispage' );
1447                         } elseif( $wgTitle->quickUserCan( 'create' ) && !$wgTitle->exists() ) {
1448                                 $t = wfMsg( 'create-this-page' );
1449                         } else {
1450                                 $t = wfMsg( 'viewsource' );
1451                         }
1452
1453                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $this->editUrlOptions() );
1454                 }
1455                 return $s;
1456         }
1457
1458         /**
1459          * Return URL options for the 'edit page' link.
1460          * This may include an 'oldid' specifier, if the current page view is such.
1461          *
1462          * @return string
1463          * @private
1464          */
1465         function editUrlOptions() {
1466                 global $wgArticle;
1467
1468                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1469                         return "action=edit&oldid=" . intval( $this->mRevisionId );
1470                 } else {
1471                         return "action=edit";
1472                 }
1473         }
1474
1475         function deleteThisPage() {
1476                 global $wgUser, $wgTitle, $wgRequest;
1477
1478                 $diff = $wgRequest->getVal( 'diff' );
1479                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('delete') ) {
1480                         $t = wfMsg( 'deletethispage' );
1481
1482                         $s = $this->makeKnownLinkObj( $wgTitle, $t, 'action=delete' );
1483                 } else {
1484                         $s = '';
1485                 }
1486                 return $s;
1487         }
1488
1489         function protectThisPage() {
1490                 global $wgUser, $wgTitle, $wgRequest;
1491
1492                 $diff = $wgRequest->getVal( 'diff' );
1493                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1494                         if ( $wgTitle->isProtected() ) {
1495                                 $t = wfMsg( 'unprotectthispage' );
1496                                 $q = 'action=unprotect';
1497                         } else {
1498                                 $t = wfMsg( 'protectthispage' );
1499                                 $q = 'action=protect';
1500                         }
1501                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1502                 } else {
1503                         $s = '';
1504                 }
1505                 return $s;
1506         }
1507
1508         function watchThisPage() {
1509                 global $wgOut, $wgTitle;
1510                 ++$this->mWatchLinkNum;
1511
1512                 if ( $wgOut->isArticleRelated() ) {
1513                         if ( $wgTitle->userIsWatching() ) {
1514                                 $t = wfMsg( 'unwatchthispage' );
1515                                 $q = 'action=unwatch';
1516                                 $id = "mw-unwatch-link".$this->mWatchLinkNum;
1517                         } else {
1518                                 $t = wfMsg( 'watchthispage' );
1519                                 $q = 'action=watch';
1520                                 $id = 'mw-watch-link'.$this->mWatchLinkNum;
1521                         }
1522                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q, '', '', " id=\"$id\"" );
1523                 } else {
1524                         $s = wfMsg( 'notanarticle' );
1525                 }
1526                 return $s;
1527         }
1528
1529         function moveThisPage() {
1530                 global $wgTitle;
1531
1532                 if ( $wgTitle->quickUserCan( 'move' ) ) {
1533                         return $this->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
1534                           wfMsg( 'movethispage' ), 'target=' . $wgTitle->getPrefixedURL() );
1535                 } else {
1536                         // no message if page is protected - would be redundant
1537                         return '';
1538                 }
1539         }
1540
1541         function historyLink() {
1542                 global $wgTitle;
1543
1544                 return $this->makeKnownLinkObj( $wgTitle,
1545                   wfMsg( 'history' ), 'action=history' );
1546         }
1547
1548         function whatLinksHere() {
1549                 global $wgTitle;
1550
1551                 return $this->makeKnownLinkObj(
1552                         SpecialPage::getTitleFor( 'Whatlinkshere', $wgTitle->getPrefixedDBkey() ),
1553                         wfMsg( 'whatlinkshere' ) );
1554         }
1555
1556         function userContribsLink() {
1557                 global $wgTitle;
1558
1559                 return $this->makeKnownLinkObj(
1560                         SpecialPage::getTitleFor( 'Contributions', $wgTitle->getDBkey() ),
1561                         wfMsg( 'contributions' ) );
1562         }
1563
1564         function showEmailUser( $id ) {
1565                 global $wgEnableEmail, $wgEnableUserEmail, $wgUser;
1566                 return $wgEnableEmail &&
1567                        $wgEnableUserEmail &&
1568                        $wgUser->isLoggedIn() && # show only to signed in users
1569                        0 != $id; # we can only email to non-anons ..
1570 #                      '' != $id->getEmail() && # who must have an email address stored ..
1571 #                      0 != $id->getEmailauthenticationtimestamp() && # .. which is authenticated
1572 #                      1 != $wgUser->getOption('disablemail'); # and not disabled
1573         }
1574
1575         function emailUserLink() {
1576                 global $wgTitle;
1577
1578                 return $this->makeKnownLinkObj(
1579                         SpecialPage::getTitleFor( 'Emailuser', $wgTitle->getDBkey() ),
1580                         wfMsg( 'emailuser' ) );
1581         }
1582
1583         function watchPageLinksLink() {
1584                 global $wgOut, $wgTitle;
1585
1586                 if ( ! $wgOut->isArticleRelated() ) {
1587                         return '(' . wfMsg( 'notanarticle' ) . ')';
1588                 } else {
1589                         return $this->makeKnownLinkObj(
1590                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $wgTitle->getPrefixedDBkey() ),
1591                                 wfMsg( 'recentchangeslinked' ) );
1592                 }
1593         }
1594
1595         function trackbackLink() {
1596                 global $wgTitle;
1597
1598                 return "<a href=\"" . $wgTitle->trackbackURL() . "\">"
1599                         . wfMsg('trackbacklink') . "</a>";
1600         }
1601
1602         function otherLanguages() {
1603                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1604
1605                 if ( $wgHideInterlanguageLinks ) {
1606                         return '';
1607                 }
1608
1609                 $a = $wgOut->getLanguageLinks();
1610                 if ( 0 == count( $a ) ) {
1611                         return '';
1612                 }
1613
1614                 $s = wfMsg( 'otherlanguages' ) . ': ';
1615                 $first = true;
1616                 if($wgContLang->isRTL()) $s .= '<span dir="LTR">';
1617                 foreach( $a as $l ) {
1618                         if ( ! $first ) { $s .= ' | '; }
1619                         $first = false;
1620
1621                         $nt = Title::newFromText( $l );
1622                         $url = $nt->escapeFullURL();
1623                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1624
1625                         if ( '' == $text ) { $text = $l; }
1626                         $style = $this->getExternalLinkAttributes( $l, $text );
1627                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1628                 }
1629                 if($wgContLang->isRTL()) $s .= '</span>';
1630                 return $s;
1631         }
1632
1633         function bugReportsLink() {
1634                 $s = $this->makeKnownLink( wfMsgForContent( 'bugreportspage' ),
1635                   wfMsg( 'bugreports' ) );
1636                 return $s;
1637         }
1638
1639         function talkLink() {
1640                 global $wgTitle;
1641
1642                 if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
1643                         # No discussion links for special pages
1644                         return '';
1645                 }
1646
1647                 $linkOptions = array();
1648
1649                 if( $wgTitle->isTalkPage() ) {
1650                         $link = $wgTitle->getSubjectPage();
1651                         switch( $link->getNamespace() ) {
1652                                 case NS_MAIN:
1653                                         $text = wfMsg( 'articlepage' );
1654                                         break;
1655                                 case NS_USER:
1656                                         $text = wfMsg( 'userpage' );
1657                                         break;
1658                                 case NS_PROJECT:
1659                                         $text = wfMsg( 'projectpage' );
1660                                         break;
1661                                 case NS_IMAGE:
1662                                         $text = wfMsg( 'imagepage' );
1663                                         # Make link known if image exists, even if the desc. page doesn't.
1664                                         if( wfFindFile( $link ) )
1665                                                 $linkOptions[] = 'known';
1666                                         break;
1667                                 case NS_MEDIAWIKI:
1668                                         $text = wfMsg( 'mediawikipage' );
1669                                         break;
1670                                 case NS_TEMPLATE:
1671                                         $text = wfMsg( 'templatepage' );
1672                                         break;
1673                                 case NS_HELP:
1674                                         $text = wfMsg( 'viewhelppage' );
1675                                         break;
1676                                 case NS_CATEGORY:
1677                                         $text = wfMsg( 'categorypage' );
1678                                         break;
1679                                 default:
1680                                         $text = wfMsg( 'articlepage' );
1681                         }
1682                 } else {
1683                         $link = $wgTitle->getTalkPage();
1684                         $text = wfMsg( 'talkpage' );
1685                 }
1686
1687                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1688
1689                 return $s;
1690         }
1691
1692         function commentLink() {
1693                 global $wgTitle, $wgOut;
1694
1695                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
1696                         return '';
1697                 }
1698
1699                 # __NEWSECTIONLINK___ changes behaviour here
1700                 # If it's present, the link points to this page, otherwise
1701                 # it points to the talk page
1702                 if( $wgTitle->isTalkPage() ) {
1703                         $title = $wgTitle;
1704                 } elseif( $wgOut->showNewSectionLink() ) {
1705                         $title = $wgTitle;
1706                 } else {
1707                         $title = $wgTitle->getTalkPage();
1708                 }
1709
1710                 return $this->makeKnownLinkObj( $title, wfMsg( 'postcomment' ), 'action=edit&section=new' );
1711         }
1712
1713         /* these are used extensively in SkinTemplate, but also some other places */
1714         static function makeMainPageUrl( $urlaction = '' ) {
1715                 $title = Title::newMainPage();
1716                 self::checkTitle( $title, '' );
1717                 return $title->getLocalURL( $urlaction );
1718         }
1719
1720         static function makeSpecialUrl( $name, $urlaction = '' ) {
1721                 $title = SpecialPage::getTitleFor( $name );
1722                 return $title->getLocalURL( $urlaction );
1723         }
1724
1725         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1726                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1727                 return $title->getLocalURL( $urlaction );
1728         }
1729
1730         static function makeI18nUrl( $name, $urlaction = '' ) {
1731                 $title = Title::newFromText( wfMsgForContent( $name ) );
1732                 self::checkTitle( $title, $name );
1733                 return $title->getLocalURL( $urlaction );
1734         }
1735
1736         static function makeUrl( $name, $urlaction = '' ) {
1737                 $title = Title::newFromText( $name );
1738                 self::checkTitle( $title, $name );
1739                 return $title->getLocalURL( $urlaction );
1740         }
1741
1742         # If url string starts with http, consider as external URL, else
1743         # internal
1744         static function makeInternalOrExternalUrl( $name ) {
1745                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1746                         return $name;
1747                 } else {
1748                         return self::makeUrl( $name );
1749                 }
1750         }
1751
1752         # this can be passed the NS number as defined in Language.php
1753         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1754                 $title = Title::makeTitleSafe( $namespace, $name );
1755                 self::checkTitle( $title, $name );
1756                 return $title->getLocalURL( $urlaction );
1757         }
1758
1759         /* these return an array with the 'href' and boolean 'exists' */
1760         static function makeUrlDetails( $name, $urlaction = '' ) {
1761                 $title = Title::newFromText( $name );
1762                 self::checkTitle( $title, $name );
1763                 return array(
1764                         'href' => $title->getLocalURL( $urlaction ),
1765                         'exists' => $title->getArticleID() != 0 ? true : false
1766                 );
1767         }
1768
1769         /**
1770          * Make URL details where the article exists (or at least it's convenient to think so)
1771          */
1772         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1773                 $title = Title::newFromText( $name );
1774                 self::checkTitle( $title, $name );
1775                 return array(
1776                         'href' => $title->getLocalURL( $urlaction ),
1777                         'exists' => true
1778                 );
1779         }
1780
1781         # make sure we have some title to operate on
1782         static function checkTitle( &$title, $name ) {
1783                 if( !is_object( $title ) ) {
1784                         $title = Title::newFromText( $name );
1785                         if( !is_object( $title ) ) {
1786                                 $title = Title::newFromText( '--error: link target missing--' );
1787                         }
1788                 }
1789         }
1790
1791         /**
1792          * Build an array that represents the sidebar(s), the navigation bar among them
1793          *
1794          * @return array
1795          */
1796         function buildSidebar() {
1797                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1798                 global $wgLang;
1799                 wfProfileIn( __METHOD__ );
1800
1801                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
1802
1803                 if ( $wgEnableSidebarCache ) {
1804                         $cachedsidebar = $parserMemc->get( $key );
1805                         if ( $cachedsidebar ) {
1806                                 wfProfileOut( __METHOD__ );
1807                                 return $cachedsidebar;
1808                         }
1809                 }
1810
1811                 $bar = array();
1812                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
1813                 $heading = '';
1814                 foreach ($lines as $line) {
1815                         if (strpos($line, '*') !== 0)
1816                                 continue;
1817                         if (strpos($line, '**') !== 0) {
1818                                 $line = trim($line, '* ');
1819                                 $heading = $line;
1820                                 if( !array_key_exists($heading, $bar) ) $bar[$heading] = array();
1821                         } else {
1822                                 if (strpos($line, '|') !== false) { // sanity check
1823                                         $line = array_map('trim', explode( '|' , trim($line, '* '), 2 ) );
1824                                         $link = wfMsgForContent( $line[0] );
1825                                         if ($link == '-')
1826                                                 continue;
1827                                         if (wfEmptyMsg($line[1], $text = wfMsg($line[1])))
1828                                                 $text = $line[1];
1829                                         if (wfEmptyMsg($line[0], $link))
1830                                                 $link = $line[0];
1831
1832                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1833                                                 $href = $link;
1834                                         } else {
1835                                                 $title = Title::newFromText( $link );
1836                                                 if ( $title ) {
1837                                                         $title = $title->fixSpecialName();
1838                                                         $href = $title->getLocalURL();
1839                                                 } else {
1840                                                         $href = 'INVALID-TITLE';
1841                                                 }
1842                                         }
1843
1844                                         $bar[$heading][] = array(
1845                                                 'text' => $text,
1846                                                 'href' => $href,
1847                                                 'id' => 'n-' . strtr($line[1], ' ', '-'),
1848                                                 'active' => false
1849                                         );
1850                                 } else { continue; }
1851                         }
1852                 }
1853                 wfRunHooks('SkinBuildSidebar', array($this, &$bar));
1854                 if ( $wgEnableSidebarCache ) $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1855                 wfProfileOut( __METHOD__ );
1856                 return $bar;
1857         }
1858 }