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
 555                 // Add any extension CSS
 556                 foreach( $out->getExtStyle() as $tag ) {
 557                         $out->addStyle( $tag['href'] );
 558                 }
 559
 560                 // If we use the site's dynamic CSS, throw that in, too
 561                 // Per-site custom styles
 562                 if( $wgUseSiteCss ) {
 563                         global $wgHandheldStyle;
 564                         $query = wfArrayToCGI( array(
 565                                 'usemsgcache' => 'yes',
 566                                 'ctype' => 'text/css',
 567                                 'smaxage' => $wgSquidMaxage
 568                         ) + $siteargs );
 569                         # Site settings must override extension css! (bug 15025)
 570                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 571                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 572                         if( $wgHandheldStyle ) {
 573                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 574                         }
 575                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 576                 }
 577
 578                 if( $wgUser->isLoggedIn() ) {
 579                         // Ensure that logged-in users' generated CSS isn't clobbered
 580                         // by anons' publicly cacheable generated CSS.
 581                         $siteargs['smaxage'] = '0';
 582                         $siteargs['ts'] = $wgUser->mTouched;
 583                 }
 584                 // Per-user styles based on preferences
 585                 $siteargs['gen'] = 'css';
 586                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 587                         $siteargs['useskin'] = $us;
 588                 }
 589                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 590
 591                 // Per-user custom style pages
 592                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 593                         $action = $wgRequest->getVal('action');
 594                         # If we're previewing the CSS page, use it
 595                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 596                                 $previewCss = $wgRequest->getText('wpTextbox1');
 597                                 // @FIXME: properly escape the cdata!
 598                                 $this->usercss = "/*<![CDATA[*/\n" . $previewCss . "/*]]>*/";
 599                         } else {
 600                                 $out->addStyle( self::makeUrl($this->userpage . '/' . $this->getSkinName() .'.css',
 601                                         'action=raw&ctype=text/css' ) );
 602                         }
 603                 }
 604
 605                 wfProfileOut( __METHOD__ );
 606         }
 607
 608         /**
 609          * Add skin specific stylesheets
 610          * @param $out OutputPage
 611          */
 612         function setupSkinUserCss( OutputPage $out ) {
 613                 $out->addStyle( 'common/shared.css' );
 614                 $out->addStyle( 'common/oldshared.css' );
 615                 $out->addStyle( $this->getStylesheet() );
 616                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 617         }
 618
 619         function getBodyOptions() {
 620                 global $wgUser, $wgTitle, $wgOut, $wgRequest, $wgContLang;
 621
 622                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 623
 624                 if ( 0 != $wgTitle->getNamespace() ) {
 625                         $a = array( 'bgcolor' => '#ffffec' );
 626                 }
 627                 else $a = array( 'bgcolor' => '#FFFFFF' );
 628                 if($wgOut->isArticle() && $wgUser->getOption('editondblclick') &&
 629                   $wgTitle->quickUserCan( 'edit' ) ) {
 630                         $s = $wgTitle->getFullURL( $this->editUrlOptions() );
 631                         $s = 'document.location = "' .wfEscapeJSString( $s ) .'";';
 632                         $a += array ('ondblclick' => $s);
 633
 634                 }
 635                 $a['onload'] = $wgOut->getOnloadHandler();
 636                 $a['class'] =
 637                         'mediawiki' .
 638                         ' '.( $wgContLang->isRTL() ? "rtl" : "ltr" ).
 639                         ' '.$this->getPageClasses( $wgTitle ) .
 640                         ' skin-'. Sanitizer::escapeClass( $this->getSkinName( ) );
 641                 return $a;
 642         }
 643
 644         function getPageClasses( $title ) {
 645                 $numeric = 'ns-'.$title->getNamespace();
 646                 if( $title->getNamespace() == NS_SPECIAL ) {
 647                         $type = "ns-special";
 648                 } elseif( $title->isTalkPage() ) {
 649                         $type = "ns-talk";
 650                 } else {
 651                         $type = "ns-subject";
 652                 }
 653                 $name = Sanitizer::escapeClass( 'page-'.$title->getPrefixedText() );
 654                 return "$numeric $type $name";
 655         }
 656
 657         /**
 658          * URL to the logo
 659          */
 660         function getLogo() {
 661                 global $wgLogo;
 662                 return $wgLogo;
 663         }
 664
 665         /**
 666          * This will be called immediately after the <body> tag.  Split into
 667          * two functions to make it easier to subclass.
 668          */
 669         function beforeContent() {
 670                 return $this->doBeforeContent();
 671         }
 672
 673         function doBeforeContent() {
 674                 global $wgContLang;
 675                 $fname = 'Skin::doBeforeContent';
 676                 wfProfileIn( $fname );
 677
 678                 $s = '';
 679                 $qb = $this->qbSetting();
 680
 681                 if( $langlinks = $this->otherLanguages() ) {
 682                         $rows = 2;
 683                         $borderhack = '';
 684                 } else {
 685                         $rows = 1;
 686                         $langlinks = false;
 687                         $borderhack = 'class="top"';
 688                 }
 689
 690                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 691                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 692
 693                 $shove = ( $qb != 0 );
 694                 $left = ( $qb == 1 || $qb == 3 );
 695                 if( $wgContLang->isRTL() ) $left = !$left;
 696
 697                 if( !$shove ) {
 698                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 699                           $this->logoText() . '</td>';
 700                 } elseif( $left ) {
 701                         $s .= $this->getQuickbarCompensator( $rows );
 702                 }
 703                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 704                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 705
 706                 $s .= $this->topLinks() ;
 707                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 708
 709                 $r = $wgContLang->isRTL() ? "left" : "right";
 710                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 711                 $s .= $this->nameAndLogin();
 712                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 713
 714                 if ( $langlinks ) {
 715                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 716                 }
 717
 718                 if ( $shove && !$left ) { # Right
 719                         $s .= $this->getQuickbarCompensator( $rows );
 720                 }
 721                 $s .= "</tr>\n</table>\n</div>\n";
 722                 $s .= "\n<div id='article'>\n";
 723
 724                 $notice = wfGetSiteNotice();
 725                 if( $notice ) {
 726                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 727                 }
 728                 $s .= $this->pageTitle();
 729                 $s .= $this->pageSubtitle() ;
 730                 $s .= $this->getCategories();
 731                 wfProfileOut( $fname );
 732                 return $s;
 733         }
 734
 735
 736         function getCategoryLinks() {
 737                 global $wgOut, $wgTitle, $wgUseCategoryBrowser;
 738                 global $wgContLang, $wgUser;
 739
 740                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 741
 742                 # Separator
 743                 $sep = wfMsgHtml( 'catseparator' );
 744
 745                 // Use Unicode bidi embedding override characters,
 746                 // to make sure links don't smash each other up in ugly ways.
 747                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 748                 $embed = "<span dir='$dir'>";
 749                 $pop = '</span>';
 750
 751                 $allCats = $wgOut->getCategoryLinks();
 752                 $s = '';
 753                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 754                 if ( !empty( $allCats['normal'] ) ) {
 755                         $t = $embed . implode ( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 756
 757                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 758                         $s .= '<div id="mw-normal-catlinks">' .
 759                                 $this->link( Title::newFromText( wfMsgForContent('pagecategorieslink') ), $msg )
 760                                 . $colon . $t . '</div>';
 761                 }
 762
 763                 # Hidden categories
 764                 if ( isset( $allCats['hidden'] ) ) {
 765                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 766                                 $class ='mw-hidden-cats-user-shown';
 767                         } elseif ( $wgTitle->getNamespace() == NS_CATEGORY ) {
 768                                 $class = 'mw-hidden-cats-ns-shown';
 769                         } else {
 770                                 $class = 'mw-hidden-cats-hidden';
 771                         }
 772                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 773                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 774                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 775                                 "</div>";
 776                 }
 777
 778                 # optional 'dmoz-like' category browser. Will be shown under the list
 779                 # of categories an article belong to
 780                 if( $wgUseCategoryBrowser ){
 781                         $s .= '<br /><hr />';
 782
 783                         # get a big array of the parents tree
 784                         $parenttree = $wgTitle->getParentCategoryTree();
 785                         # Skin object passed by reference cause it can not be
 786                         # accessed under the method subfunction drawCategoryBrowser
 787                         $tempout = explode("\n", Skin::drawCategoryBrowser($parenttree, $this) );
 788                         # Clean out bogus first entry and sort them
 789                         unset($tempout[0]);
 790                         asort($tempout);
 791                         # Output one per line
 792                         $s .= implode("<br />\n", $tempout);
 793                 }
 794
 795                 return $s;
 796         }
 797
 798         /** Render the array as a serie of links.
 799          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 800          * @param &skin Object: skin passed by reference
 801          * @return String separated by &gt;, terminate with "\n"
 802          */
 803         function drawCategoryBrowser( $tree, &$skin ){
 804                 $return = '';
 805                 foreach ($tree as $element => $parent) {
 806                         if (empty($parent)) {
 807                                 # element start a new list
 808                                 $return .= "\n";
 809                         } else {
 810                                 # grab the others elements
 811                                 $return .= Skin::drawCategoryBrowser($parent, $skin) . ' &gt; ';
 812                         }
 813                         # add our current element to the list
 814                         $eltitle = Title::newFromText($element);
 815                         $return .=  $skin->link( $eltitle, $eltitle->getText() ) ;
 816                 }
 817                 return $return;
 818         }
 819
 820         function getCategories() {
 821                 $catlinks=$this->getCategoryLinks();
 822
 823                 $classes = 'catlinks';
 824
 825                 if( strpos( $catlinks, '<div id="mw-normal-catlinks">' ) === false &&
 826                         strpos( $catlinks, '<div id="mw-hidden-catlinks" class="mw-hidden-cats-hidden">' ) !== false ) {
 827                         $classes .= ' catlinks-allhidden';
 828                 }
 829
 830                 if( !empty( $catlinks ) ){
 831                         return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 832                 }
 833         }
 834
 835         function getQuickbarCompensator( $rows = 1 ) {
 836                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 837         }
 838
 839         /**
 840          * This runs a hook to allow extensions placing their stuff after content
 841          * and article metadata (e.g. categories).
 842          * Note: This function has nothing to do with afterContent().
 843          *
 844          * This hook is placed here in order to allow using the same hook for all
 845          * skins, both the SkinTemplate based ones and the older ones, which directly
 846          * use this class to get their data.
 847          *
 848          * The output of this function gets processed in SkinTemplate::outputPage() for
 849          * the SkinTemplate based skins, all other skins should directly echo it.
 850          *
 851          * Returns an empty string by default, if not changed by any hook function.
 852          */
 853         protected function afterContentHook() {
 854                 $data = "";
 855
 856                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ){
 857                         // adding just some spaces shouldn't toggle the output
 858                         // of the whole <div/>, so we use trim() here
 859                         if( trim( $data ) != '' ){
 860                                 // Doing this here instead of in the skins to
 861                                 // ensure that the div has the same ID in all
 862                                 // skins
 863                                 $data = "<div id='mw-data-after-content'>\n" .
 864                                         "\t$data\n" .
 865                                         "</div>\n";
 866                         }
 867                 } else {
 868                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 869                 }
 870
 871                 return $data;
 872         }
 873
 874         /**
 875          * This gets called shortly before the </body> tag.
 876          * @return String HTML to be put before </body>
 877          */
 878         function afterContent() {
 879                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 880                 return $printfooter . $this->doAfterContent();
 881         }
 882
 883         /**
 884          * This gets called shortly before the </body> tag.
 885          * @return String HTML-wrapped JS code to be put before </body>
 886          */
 887         function bottomScripts() {
 888                 global $wgJsMimeType;
 889                 $bottomScriptText = "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 890                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 891                 return $bottomScriptText;
 892         }
 893
 894         /** @return string Retrievied from HTML text */
 895         function printSource() {
 896                 global $wgTitle;
 897                 $url = htmlspecialchars( $wgTitle->getFullURL() );
 898                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 899         }
 900
 901         function printFooter() {
 902                 return "<p>" .  $this->printSource() .
 903                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 904         }
 905
 906         /** overloaded by derived classes */
 907         function doAfterContent() { return "</div></div>"; }
 908
 909         function pageTitleLinks() {
 910                 global $wgOut, $wgTitle, $wgUser, $wgRequest;
 911
 912                 $oldid = $wgRequest->getVal( 'oldid' );
 913                 $diff = $wgRequest->getVal( 'diff' );
 914                 $action = $wgRequest->getText( 'action' );
 915
 916                 $s = $this->printableLink();
 917                 $disclaimer = $this->disclaimerLink(); # may be empty
 918                 if( $disclaimer ) {
 919                         $s .= ' | ' . $disclaimer;
 920                 }
 921                 $privacy = $this->privacyLink(); # may be empty too
 922                 if( $privacy ) {
 923                         $s .= ' | ' . $privacy;
 924                 }
 925
 926                 if ( $wgOut->isArticleRelated() ) {
 927                         if ( $wgTitle->getNamespace() == NS_IMAGE ) {
 928                                 $name = $wgTitle->getDBkey();
 929                                 $image = wfFindFile( $wgTitle );
 930                                 if( $image ) {
 931                                         $link = htmlspecialchars( $image->getURL() );
 932                                         $style = $this->getInternalLinkAttributes( $link, $name );
 933                                         $s .= " | <a href=\"{$link}\"{$style}>{$name}</a>";
 934                                 }
 935                         }
 936                 }
 937                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 938                         $s .= ' | ' . $this->makeKnownLinkObj( $wgTitle,
 939                                         wfMsg( 'currentrev' ) );
 940                 }
 941
 942                 if ( $wgUser->getNewtalk() ) {
 943                         # do not show "You have new messages" text when we are viewing our
 944                         # own talk page
 945                         if( !$wgTitle->equals( $wgUser->getTalkPage() ) ) {
 946                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessageslink' ), 'redirect=no' );
 947                                 $dl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessagesdifflink' ), 'diff=cur' );
 948                                 $s.= ' | <strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 949                                 # disable caching
 950                                 $wgOut->setSquidMaxage(0);
 951                                 $wgOut->enableClientCache(false);
 952                         }
 953                 }
 954
 955                 $undelete = $this->getUndeleteLink();
 956                 if( !empty( $undelete ) ) {
 957                         $s .= ' | '.$undelete;
 958                 }
 959                 return $s;
 960         }
 961
 962         function getUndeleteLink() {
 963                 global $wgUser, $wgTitle, $wgContLang, $wgLang, $action;
 964                 if(     $wgUser->isAllowed( 'deletedhistory' ) &&
 965                         (($wgTitle->getArticleId() == 0) || ($action == "history")) &&
 966                         ($n = $wgTitle->isDeleted() ) )
 967                 {
 968                         if ( $wgUser->isAllowed( 'undelete' ) ) {
 969                                 $msg = 'thisisdeleted';
 970                         } else {
 971                                 $msg = 'viewdeleted';
 972                         }
 973                         return wfMsg( $msg,
 974                                 $this->makeKnownLinkObj(
 975                                         SpecialPage::getTitleFor( 'Undelete', $wgTitle->getPrefixedDBkey() ),
 976                                         wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ) ) );
 977                 }
 978                 return '';
 979         }
 980
 981         function printableLink() {
 982                 global $wgOut, $wgFeedClasses, $wgRequest;
 983
 984                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
 985
 986                 $s = "<a href=\"$printurl\">" . wfMsg( 'printableversion' ) . '</a>';
 987                 if( $wgOut->isSyndicated() ) {
 988                         foreach( $wgFeedClasses as $format => $class ) {
 989                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
 990                                 $s .= " | <a href=\"$feedurl\">{$format}</a>";
 991                         }
 992                 }
 993                 return $s;
 994         }
 995
 996         function pageTitle() {
 997                 global $wgOut;
 998                 $s = '<h1 class="pagetitle">' . htmlspecialchars( $wgOut->getPageTitle() ) . '</h1>';
 999                 return $s;
1000         }
1001
1002         function pageSubtitle() {
1003                 global $wgOut;
1004
1005                 $sub = $wgOut->getSubtitle();
1006                 if ( '' == $sub ) {
1007                         global $wgExtraSubtitle;
1008                         $sub = wfMsg( 'tagline' ) . $wgExtraSubtitle;
1009                 }
1010                 $subpages = $this->subPageSubtitle();
1011                 $sub .= !empty($subpages)?"</p><p class='subpages'>$subpages":'';
1012                 $s = "<p class='subtitle'>{$sub}</p>\n";
1013                 return $s;
1014         }
1015
1016         function subPageSubtitle() {
1017                 $subpages = '';
1018                 if(!wfRunHooks('SkinSubPageSubtitle', array(&$subpages)))
1019                         return $subpages;
1020
1021                 global $wgOut, $wgTitle;
1022                 if($wgOut->isArticle() && MWNamespace::hasSubpages( $wgTitle->getNamespace() )) {
1023                         $ptext=$wgTitle->getPrefixedText();
1024                         if(preg_match('/\//',$ptext)) {
1025                                 $links = explode('/',$ptext);
1026                                 array_pop( $links );
1027                                 $c = 0;
1028                                 $growinglink = '';
1029                                 $display = '';
1030                                 foreach($links as $link) {
1031                                         $growinglink .= $link;
1032                                         $display .= $link;
1033                                         $linkObj = Title::newFromText( $growinglink );
1034                                         if( is_object( $linkObj ) && $linkObj->exists() ){
1035                                                 $getlink = $this->makeKnownLinkObj( $linkObj, htmlspecialchars( $display ) );
1036                                                 $c++;
1037                                                 if ($c>1) {
1038                                                         $subpages .= ' | ';
1039                                                 } else  {
1040                                                         $subpages .= '&lt; ';
1041                                                 }
1042                                                 $subpages .= $getlink;
1043                                                 $display = '';
1044                                         } else {
1045                                                 $display .= '/';
1046                                         }
1047                                         $growinglink .= '/';
1048                                 }
1049                         }
1050                 }
1051                 return $subpages;
1052         }
1053
1054         /**
1055          * Returns true if the IP should be shown in the header
1056          */
1057         function showIPinHeader() {
1058                 global $wgShowIPinHeader;
1059                 return $wgShowIPinHeader && session_id() != '';
1060         }
1061
1062         function nameAndLogin() {
1063                 global $wgUser, $wgTitle, $wgLang, $wgContLang;
1064
1065                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1066
1067                 $ret = '';
1068                 if ( $wgUser->isAnon() ) {
1069                         if( $this->showIPinHeader() ) {
1070                                 $name = wfGetIP();
1071
1072                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1073                                         $wgLang->getNsText( NS_TALK ) );
1074
1075                                 $ret .= "$name ($talkLink)";
1076                         } else {
1077                                 $ret .= wfMsg( 'notloggedin' );
1078                         }
1079
1080                         $returnTo = $wgTitle->getPrefixedDBkey();
1081                         $query = array();
1082                         if ( $logoutPage != $returnTo ) {
1083                                 $query['returnto'] = $returnTo;
1084                         }
1085
1086                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1087                                 ? 'nav-login-createaccount'
1088                                 : 'login';
1089                         $ret .= "\n<br />" . $this->link(
1090                                 SpecialPage::getTitleFor( 'Userlogin' ),
1091                                 wfMsg( $loginlink ), array(), $query
1092                         );
1093                 } else {
1094                         $returnTo = $wgTitle->getPrefixedDBkey();
1095                         $talkLink = $this->link( $wgUser->getTalkPage(),
1096                                 $wgLang->getNsText( NS_TALK ) );
1097
1098                         $ret .= $this->link( $wgUser->getUserPage(),
1099                                 htmlspecialchars( $wgUser->getName() ) );
1100                         $ret .= " ($talkLink)<br />";
1101                         $ret .= $this->link(
1102                                 SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1103                                 array(), array( 'returnto' => $returnTo )
1104                         );
1105                         $ret .= ' | ' . $this->specialLink( 'preferences' );
1106                 }
1107                 $ret .= ' | ' . $this->link(
1108                         Title::newFromText( wfMsgForContent( 'helppage' ) ),
1109                         wfMsg( 'help' )
1110                 );
1111
1112                 return $ret;
1113         }
1114
1115         function getSearchLink() {
1116                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1117                 return $searchPage->getLocalURL();
1118         }
1119
1120         function escapeSearchLink() {
1121                 return htmlspecialchars( $this->getSearchLink() );
1122         }
1123
1124         function searchForm() {
1125                 global $wgRequest;
1126                 $search = $wgRequest->getText( 'search' );
1127
1128                 $s = '<form id="searchform'.$this->searchboxes.'" name="search" class="inline" method="post" action="'
1129                   . $this->escapeSearchLink() . "\">\n"
1130                   . '<input type="text" id="searchInput'.$this->searchboxes.'" name="search" size="19" value="'
1131                   . htmlspecialchars(substr($search,0,256)) . "\" />\n"
1132                   . '<input type="submit" name="go" value="' . wfMsg ('searcharticle') . '" />&nbsp;'
1133                   . '<input type="submit" name="fulltext" value="' . wfMsg ('searchbutton') . "\" />\n</form>";
1134
1135                 // Ensure unique id's for search boxes made after the first
1136                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1137
1138                 return $s;
1139         }
1140
1141         function topLinks() {
1142                 global $wgOut;
1143                 $sep = " |\n";
1144
1145                 $s = $this->mainPageLink() . $sep
1146                   . $this->specialLink( 'recentchanges' );
1147
1148                 if ( $wgOut->isArticleRelated() ) {
1149                         $s .=  $sep . $this->editThisPage()
1150                           . $sep . $this->historyLink();
1151                 }
1152                 # Many people don't like this dropdown box
1153                 #$s .= $sep . $this->specialPagesList();
1154
1155                 $s .= $this->variantLinks();
1156
1157                 $s .= $this->extensionTabLinks();
1158
1159                 return $s;
1160         }
1161
1162         /**
1163          * Compatibility for extensions adding functionality through tabs.
1164          * Eventually these old skins should be replaced with SkinTemplate-based
1165          * versions, sigh...
1166          * @return string
1167          */
1168         function extensionTabLinks() {
1169                 $tabs = array();
1170                 $s = '';
1171                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1172                 foreach( $tabs as $tab ) {
1173                         $s .= ' | ' . Xml::element( 'a',
1174                                 array( 'href' => $tab['href'] ),
1175                                 $tab['text'] );
1176                 }
1177                 return $s;
1178         }
1179
1180         /**
1181          * Language/charset variant links for classic-style skins
1182          * @return string
1183          */
1184         function variantLinks() {
1185                 $s = '';
1186                 /* show links to different language variants */
1187                 global $wgDisableLangConversion, $wgContLang, $wgTitle;
1188                 $variants = $wgContLang->getVariants();
1189                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1190                         foreach( $variants as $code ) {
1191                                 $varname = $wgContLang->getVariantname( $code );
1192                                 if( $varname == 'disable' )
1193                                         continue;
1194                                 $s .= ' | <a href="' . $wgTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>';
1195                         }
1196                 }
1197                 return $s;
1198         }
1199
1200         function bottomLinks() {
1201                 global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
1202                 $sep = " |\n";
1203
1204                 $s = '';
1205                 if ( $wgOut->isArticleRelated() ) {
1206                         $s .= '<strong>' . $this->editThisPage() . '</strong>';
1207                         if ( $wgUser->isLoggedIn() ) {
1208                                 $s .= $sep . $this->watchThisPage();
1209                         }
1210                         $s .= $sep . $this->talkLink()
1211                           . $sep . $this->historyLink()
1212                           . $sep . $this->whatLinksHere()
1213                           . $sep . $this->watchPageLinksLink();
1214
1215                         if ($wgUseTrackbacks)
1216                                 $s .= $sep . $this->trackbackLink();
1217
1218                         if ( $wgTitle->getNamespace() == NS_USER
1219                             || $wgTitle->getNamespace() == NS_USER_TALK )
1220
1221                         {
1222                                 $id=User::idFromName($wgTitle->getText());
1223                                 $ip=User::isIP($wgTitle->getText());
1224
1225                                 if($id || $ip) { # both anons and non-anons have contri list
1226                                         $s .= $sep . $this->userContribsLink();
1227                                 }
1228                                 if( $this->showEmailUser( $id ) ) {
1229                                         $s .= $sep . $this->emailUserLink();
1230                                 }
1231                         }
1232                         if ( $wgTitle->getArticleId() ) {
1233                                 $s .= "\n<br />";
1234                                 if($wgUser->isAllowed('delete')) { $s .= $this->deleteThisPage(); }
1235                                 if($wgUser->isAllowed('protect')) { $s .= $sep . $this->protectThisPage(); }
1236                                 if($wgUser->isAllowed('move')) { $s .= $sep . $this->moveThisPage(); }
1237                         }
1238                         $s .= "<br />\n" . $this->otherLanguages();
1239                 }
1240                 return $s;
1241         }
1242
1243         function pageStats() {
1244                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1245                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgTitle, $wgPageShowWatchingUsers;
1246
1247                 $oldid = $wgRequest->getVal( 'oldid' );
1248                 $diff = $wgRequest->getVal( 'diff' );
1249                 if ( ! $wgOut->isArticle() ) { return ''; }
1250                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1251                 if ( 0 == $wgArticle->getID() ) { return ''; }
1252
1253                 $s = '';
1254                 if ( !$wgDisableCounters ) {
1255                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1256                         if ( $count ) {
1257                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1258                         }
1259                 }
1260
1261                 if( $wgMaxCredits != 0 ){
1262                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1263                 } else {
1264                         $s .= $this->lastModified();
1265                 }
1266
1267                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1268                         $dbr = wfGetDB( DB_SLAVE );
1269                         $watchlist = $dbr->tableName( 'watchlist' );
1270                         $sql = "SELECT COUNT(*) AS n FROM $watchlist
1271                                 WHERE wl_title='" . $dbr->strencode($wgTitle->getDBkey()) .
1272                                 "' AND  wl_namespace=" . $wgTitle->getNamespace() ;
1273                         $res = $dbr->query( $sql, 'Skin::pageStats');
1274                         $x = $dbr->fetchObject( $res );
1275
1276                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1277                                 array( 'parseinline' ), $wgLang->formatNum($x->n)
1278                         );
1279                 }
1280
1281                 return $s . ' ' .  $this->getCopyright();
1282         }
1283
1284         function getCopyright( $type = 'detect' ) {
1285                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
1286
1287                 if ( $type == 'detect' ) {
1288                         $oldid = $wgRequest->getVal( 'oldid' );
1289                         $diff = $wgRequest->getVal( 'diff' );
1290
1291                         if ( !is_null( $oldid ) && is_null( $diff ) && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1292                                 $type = 'history';
1293                         } else {
1294                                 $type = 'normal';
1295                         }
1296                 }
1297
1298                 if ( $type == 'history' ) {
1299                         $msg = 'history_copyright';
1300                 } else {
1301                         $msg = 'copyright';
1302                 }
1303
1304                 $out = '';
1305                 if( $wgRightsPage ) {
1306                         $link = $this->makeKnownLink( $wgRightsPage, $wgRightsText );
1307                 } elseif( $wgRightsUrl ) {
1308                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1309                 } elseif( $wgRightsText ) {
1310                         $link = $wgRightsText;
1311                 } else {
1312                         # Give up now
1313                         return $out;
1314                 }
1315                 $out .= wfMsgForContent( $msg, $link );
1316                 return $out;
1317         }
1318
1319         function getCopyrightIcon() {
1320                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1321                 $out = '';
1322                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1323                         $out = $wgCopyrightIcon;
1324                 } else if ( $wgRightsIcon ) {
1325                         $icon = htmlspecialchars( $wgRightsIcon );
1326                         if ( $wgRightsUrl ) {
1327                                 $url = htmlspecialchars( $wgRightsUrl );
1328                                 $out .= '<a href="'.$url.'">';
1329                         }
1330                         $text = htmlspecialchars( $wgRightsText );
1331                         $out .= "<img src=\"$icon\" alt='$text' />";
1332                         if ( $wgRightsUrl ) {
1333                                 $out .= '</a>';
1334                         }
1335                 }
1336                 return $out;
1337         }
1338
1339         function getPoweredBy() {
1340                 global $wgStylePath;
1341                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1342                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="Powered by MediaWiki" /></a>';
1343                 return $img;
1344         }
1345
1346         function lastModified() {
1347                 global $wgLang, $wgArticle;
1348                 if( $this->mRevisionId ) {
1349                         $timestamp = Revision::getTimestampFromId( $this->mRevisionId, $wgArticle->getId() );
1350                 } else {
1351                         $timestamp = $wgArticle->getTimestamp();
1352                 }
1353                 if ( $timestamp ) {
1354                         $d = $wgLang->date( $timestamp, true );
1355                         $t = $wgLang->time( $timestamp, true );
1356                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1357                 } else {
1358                         $s = '';
1359                 }
1360                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1361                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1362                 }
1363                 return $s;
1364         }
1365
1366         function logoText( $align = '' ) {
1367                 if ( '' != $align ) { $a = " align='{$align}'"; }
1368                 else { $a = ''; }
1369
1370                 $mp = wfMsg( 'mainpage' );
1371                 $mptitle = Title::newMainPage();
1372                 $url = ( is_object($mptitle) ? $mptitle->escapeLocalURL() : '' );
1373
1374                 $logourl = $this->getLogo();
1375                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1376                 return $s;
1377         }
1378
1379         /**
1380          * show a drop-down box of special pages
1381          */
1382         function specialPagesList() {
1383                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1384                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1385                 foreach ( $pages as $name => $page ) {
1386                         $pages[$name] = $page->getDescription();
1387                 }
1388
1389                 $go = wfMsg( 'go' );
1390                 $sp = wfMsg( 'specialpages' );
1391                 $spp = $wgContLang->specialPage( 'Specialpages' );
1392
1393                 $s = '<form id="specialpages" method="get" class="inline" ' .
1394                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1395                 $s .= "<select name=\"wpDropdown\">\n";
1396                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1397
1398
1399                 foreach ( $pages as $name => $desc ) {
1400                         $p = $wgContLang->specialPage( $name );
1401                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1402                 }
1403                 $s .= "</select>\n";
1404                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1405                 $s .= "</form>\n";
1406                 return $s;
1407         }
1408
1409         function mainPageLink() {
1410                 $s = $this->makeKnownLinkObj( Title::newMainPage(), wfMsg( 'mainpage' ) );
1411                 return $s;
1412         }
1413
1414         function copyrightLink() {
1415                 $s = $this->makeKnownLink( wfMsgForContent( 'copyrightpage' ),
1416                   wfMsg( 'copyrightpagename' ) );
1417                 return $s;
1418         }
1419
1420         private function footerLink ( $desc, $page ) {
1421                 // if the link description has been set to "-" in the default language,
1422                 if ( wfMsgForContent( $desc )  == '-') {
1423                         // then it is disabled, for all languages.
1424                         return '';
1425                 } else {
1426                         // Otherwise, we display the link for the user, described in their
1427                         // language (which may or may not be the same as the default language),
1428                         // but we make the link target be the one site-wide page.
1429                         return $this->makeKnownLink( wfMsgForContent( $page ),
1430                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) ) );
1431                 }
1432         }
1433
1434         function privacyLink() {
1435                 return $this->footerLink( 'privacy', 'privacypage' );
1436         }
1437
1438         function aboutLink() {
1439                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1440         }
1441
1442         function disclaimerLink() {
1443                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1444         }
1445
1446         function editThisPage() {
1447                 global $wgOut, $wgTitle;
1448
1449                 if ( !$wgOut->isArticleRelated() ) {
1450                         $s = wfMsg( 'protectedpage' );
1451                 } else {
1452                         if( $wgTitle->quickUserCan( 'edit' ) && $wgTitle->exists() ) {
1453                                 $t = wfMsg( 'editthispage' );
1454                         } elseif( $wgTitle->quickUserCan( 'create' ) && !$wgTitle->exists() ) {
1455                                 $t = wfMsg( 'create-this-page' );
1456                         } else {
1457                                 $t = wfMsg( 'viewsource' );
1458                         }
1459
1460                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $this->editUrlOptions() );
1461                 }
1462                 return $s;
1463         }
1464
1465         /**
1466          * Return URL options for the 'edit page' link.
1467          * This may include an 'oldid' specifier, if the current page view is such.
1468          *
1469          * @return string
1470          * @private
1471          */
1472         function editUrlOptions() {
1473                 global $wgArticle;
1474
1475                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1476                         return "action=edit&oldid=" . intval( $this->mRevisionId );
1477                 } else {
1478                         return "action=edit";
1479                 }
1480         }
1481
1482         function deleteThisPage() {
1483                 global $wgUser, $wgTitle, $wgRequest;
1484
1485                 $diff = $wgRequest->getVal( 'diff' );
1486                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('delete') ) {
1487                         $t = wfMsg( 'deletethispage' );
1488
1489                         $s = $this->makeKnownLinkObj( $wgTitle, $t, 'action=delete' );
1490                 } else {
1491                         $s = '';
1492                 }
1493                 return $s;
1494         }
1495
1496         function protectThisPage() {
1497                 global $wgUser, $wgTitle, $wgRequest;
1498
1499                 $diff = $wgRequest->getVal( 'diff' );
1500                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1501                         if ( $wgTitle->isProtected() ) {
1502                                 $t = wfMsg( 'unprotectthispage' );
1503                                 $q = 'action=unprotect';
1504                         } else {
1505                                 $t = wfMsg( 'protectthispage' );
1506                                 $q = 'action=protect';
1507                         }
1508                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1509                 } else {
1510                         $s = '';
1511                 }
1512                 return $s;
1513         }
1514
1515         function watchThisPage() {
1516                 global $wgOut, $wgTitle;
1517                 ++$this->mWatchLinkNum;
1518
1519                 if ( $wgOut->isArticleRelated() ) {
1520                         if ( $wgTitle->userIsWatching() ) {
1521                                 $t = wfMsg( 'unwatchthispage' );
1522                                 $q = 'action=unwatch';
1523                                 $id = "mw-unwatch-link".$this->mWatchLinkNum;
1524                         } else {
1525                                 $t = wfMsg( 'watchthispage' );
1526                                 $q = 'action=watch';
1527                                 $id = 'mw-watch-link'.$this->mWatchLinkNum;
1528                         }
1529                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q, '', '', " id=\"$id\"" );
1530                 } else {
1531                         $s = wfMsg( 'notanarticle' );
1532                 }
1533                 return $s;
1534         }
1535
1536         function moveThisPage() {
1537                 global $wgTitle;
1538
1539                 if ( $wgTitle->quickUserCan( 'move' ) ) {
1540                         return $this->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
1541                           wfMsg( 'movethispage' ), 'target=' . $wgTitle->getPrefixedURL() );
1542                 } else {
1543                         // no message if page is protected - would be redundant
1544                         return '';
1545                 }
1546         }
1547
1548         function historyLink() {
1549                 global $wgTitle;
1550
1551                 return $this->makeKnownLinkObj( $wgTitle,
1552                   wfMsg( 'history' ), 'action=history' );
1553         }
1554
1555         function whatLinksHere() {
1556                 global $wgTitle;
1557
1558                 return $this->makeKnownLinkObj(
1559                         SpecialPage::getTitleFor( 'Whatlinkshere', $wgTitle->getPrefixedDBkey() ),
1560                         wfMsg( 'whatlinkshere' ) );
1561         }
1562
1563         function userContribsLink() {
1564                 global $wgTitle;
1565
1566                 return $this->makeKnownLinkObj(
1567                         SpecialPage::getTitleFor( 'Contributions', $wgTitle->getDBkey() ),
1568                         wfMsg( 'contributions' ) );
1569         }
1570
1571         function showEmailUser( $id ) {
1572                 global $wgEnableEmail, $wgEnableUserEmail, $wgUser;
1573                 return $wgEnableEmail &&
1574                        $wgEnableUserEmail &&
1575                        $wgUser->isLoggedIn() && # show only to signed in users
1576                        0 != $id; # we can only email to non-anons ..
1577 #                      '' != $id->getEmail() && # who must have an email address stored ..
1578 #                      0 != $id->getEmailauthenticationtimestamp() && # .. which is authenticated
1579 #                      1 != $wgUser->getOption('disablemail'); # and not disabled
1580         }
1581
1582         function emailUserLink() {
1583                 global $wgTitle;
1584
1585                 return $this->makeKnownLinkObj(
1586                         SpecialPage::getTitleFor( 'Emailuser', $wgTitle->getDBkey() ),
1587                         wfMsg( 'emailuser' ) );
1588         }
1589
1590         function watchPageLinksLink() {
1591                 global $wgOut, $wgTitle;
1592
1593                 if ( ! $wgOut->isArticleRelated() ) {
1594                         return '(' . wfMsg( 'notanarticle' ) . ')';
1595                 } else {
1596                         return $this->makeKnownLinkObj(
1597                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $wgTitle->getPrefixedDBkey() ),
1598                                 wfMsg( 'recentchangeslinked' ) );
1599                 }
1600         }
1601
1602         function trackbackLink() {
1603                 global $wgTitle;
1604
1605                 return "<a href=\"" . $wgTitle->trackbackURL() . "\">"
1606                         . wfMsg('trackbacklink') . "</a>";
1607         }
1608
1609         function otherLanguages() {
1610                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1611
1612                 if ( $wgHideInterlanguageLinks ) {
1613                         return '';
1614                 }
1615
1616                 $a = $wgOut->getLanguageLinks();
1617                 if ( 0 == count( $a ) ) {
1618                         return '';
1619                 }
1620
1621                 $s = wfMsg( 'otherlanguages' ) . ': ';
1622                 $first = true;
1623                 if($wgContLang->isRTL()) $s .= '<span dir="LTR">';
1624                 foreach( $a as $l ) {
1625                         if ( ! $first ) { $s .= ' | '; }
1626                         $first = false;
1627
1628                         $nt = Title::newFromText( $l );
1629                         $url = $nt->escapeFullURL();
1630                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1631
1632                         if ( '' == $text ) { $text = $l; }
1633                         $style = $this->getExternalLinkAttributes( $l, $text );
1634                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1635                 }
1636                 if($wgContLang->isRTL()) $s .= '</span>';
1637                 return $s;
1638         }
1639
1640         function bugReportsLink() {
1641                 $s = $this->makeKnownLink( wfMsgForContent( 'bugreportspage' ),
1642                   wfMsg( 'bugreports' ) );
1643                 return $s;
1644         }
1645
1646         function talkLink() {
1647                 global $wgTitle;
1648
1649                 if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
1650                         # No discussion links for special pages
1651                         return '';
1652                 }
1653
1654                 $linkOptions = array();
1655
1656                 if( $wgTitle->isTalkPage() ) {
1657                         $link = $wgTitle->getSubjectPage();
1658                         switch( $link->getNamespace() ) {
1659                                 case NS_MAIN:
1660                                         $text = wfMsg( 'articlepage' );
1661                                         break;
1662                                 case NS_USER:
1663                                         $text = wfMsg( 'userpage' );
1664                                         break;
1665                                 case NS_PROJECT:
1666                                         $text = wfMsg( 'projectpage' );
1667                                         break;
1668                                 case NS_IMAGE:
1669                                         $text = wfMsg( 'imagepage' );
1670                                         # Make link known if image exists, even if the desc. page doesn't.
1671                                         if( wfFindFile( $link ) )
1672                                                 $linkOptions[] = 'known';
1673                                         break;
1674                                 case NS_MEDIAWIKI:
1675                                         $text = wfMsg( 'mediawikipage' );
1676                                         break;
1677                                 case NS_TEMPLATE:
1678                                         $text = wfMsg( 'templatepage' );
1679                                         break;
1680                                 case NS_HELP:
1681                                         $text = wfMsg( 'viewhelppage' );
1682                                         break;
1683                                 case NS_CATEGORY:
1684                                         $text = wfMsg( 'categorypage' );
1685                                         break;
1686                                 default:
1687                                         $text = wfMsg( 'articlepage' );
1688                         }
1689                 } else {
1690                         $link = $wgTitle->getTalkPage();
1691                         $text = wfMsg( 'talkpage' );
1692                 }
1693
1694                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1695
1696                 return $s;
1697         }
1698
1699         function commentLink() {
1700                 global $wgTitle, $wgOut;
1701
1702                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
1703                         return '';
1704                 }
1705
1706                 # __NEWSECTIONLINK___ changes behaviour here
1707                 # If it's present, the link points to this page, otherwise
1708                 # it points to the talk page
1709                 if( $wgTitle->isTalkPage() ) {
1710                         $title = $wgTitle;
1711                 } elseif( $wgOut->showNewSectionLink() ) {
1712                         $title = $wgTitle;
1713                 } else {
1714                         $title = $wgTitle->getTalkPage();
1715                 }
1716
1717                 return $this->makeKnownLinkObj( $title, wfMsg( 'postcomment' ), 'action=edit&section=new' );
1718         }
1719
1720         /* these are used extensively in SkinTemplate, but also some other places */
1721         static function makeMainPageUrl( $urlaction = '' ) {
1722                 $title = Title::newMainPage();
1723                 self::checkTitle( $title, '' );
1724                 return $title->getLocalURL( $urlaction );
1725         }
1726
1727         static function makeSpecialUrl( $name, $urlaction = '' ) {
1728                 $title = SpecialPage::getTitleFor( $name );
1729                 return $title->getLocalURL( $urlaction );
1730         }
1731
1732         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1733                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1734                 return $title->getLocalURL( $urlaction );
1735         }
1736
1737         static function makeI18nUrl( $name, $urlaction = '' ) {
1738                 $title = Title::newFromText( wfMsgForContent( $name ) );
1739                 self::checkTitle( $title, $name );
1740                 return $title->getLocalURL( $urlaction );
1741         }
1742
1743         static function makeUrl( $name, $urlaction = '' ) {
1744                 $title = Title::newFromText( $name );
1745                 self::checkTitle( $title, $name );
1746                 return $title->getLocalURL( $urlaction );
1747         }
1748
1749         # If url string starts with http, consider as external URL, else
1750         # internal
1751         static function makeInternalOrExternalUrl( $name ) {
1752                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1753                         return $name;
1754                 } else {
1755                         return self::makeUrl( $name );
1756                 }
1757         }
1758
1759         # this can be passed the NS number as defined in Language.php
1760         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1761                 $title = Title::makeTitleSafe( $namespace, $name );
1762                 self::checkTitle( $title, $name );
1763                 return $title->getLocalURL( $urlaction );
1764         }
1765
1766         /* these return an array with the 'href' and boolean 'exists' */
1767         static function makeUrlDetails( $name, $urlaction = '' ) {
1768                 $title = Title::newFromText( $name );
1769                 self::checkTitle( $title, $name );
1770                 return array(
1771                         'href' => $title->getLocalURL( $urlaction ),
1772                         'exists' => $title->getArticleID() != 0 ? true : false
1773                 );
1774         }
1775
1776         /**
1777          * Make URL details where the article exists (or at least it's convenient to think so)
1778          */
1779         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1780                 $title = Title::newFromText( $name );
1781                 self::checkTitle( $title, $name );
1782                 return array(
1783                         'href' => $title->getLocalURL( $urlaction ),
1784                         'exists' => true
1785                 );
1786         }
1787
1788         # make sure we have some title to operate on
1789         static function checkTitle( &$title, $name ) {
1790                 if( !is_object( $title ) ) {
1791                         $title = Title::newFromText( $name );
1792                         if( !is_object( $title ) ) {
1793                                 $title = Title::newFromText( '--error: link target missing--' );
1794                         }
1795                 }
1796         }
1797
1798         /**
1799          * Build an array that represents the sidebar(s), the navigation bar among them
1800          *
1801          * @return array
1802          */
1803         function buildSidebar() {
1804                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1805                 global $wgLang;
1806                 wfProfileIn( __METHOD__ );
1807
1808                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
1809
1810                 if ( $wgEnableSidebarCache ) {
1811                         $cachedsidebar = $parserMemc->get( $key );
1812                         if ( $cachedsidebar ) {
1813                                 wfProfileOut( __METHOD__ );
1814                                 return $cachedsidebar;
1815                         }
1816                 }
1817
1818                 $bar = array();
1819                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
1820                 $heading = '';
1821                 foreach ($lines as $line) {
1822                         if (strpos($line, '*') !== 0)
1823                                 continue;
1824                         if (strpos($line, '**') !== 0) {
1825                                 $line = trim($line, '* ');
1826                                 $heading = $line;
1827                                 if( !array_key_exists($heading, $bar) ) $bar[$heading] = array();
1828                         } else {
1829                                 if (strpos($line, '|') !== false) { // sanity check
1830                                         $line = array_map('trim', explode( '|' , trim($line, '* '), 2 ) );
1831                                         $link = wfMsgForContent( $line[0] );
1832                                         if ($link == '-')
1833                                                 continue;
1834                                         if (wfEmptyMsg($line[1], $text = wfMsg($line[1])))
1835                                                 $text = $line[1];
1836                                         if (wfEmptyMsg($line[0], $link))
1837                                                 $link = $line[0];
1838
1839                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1840                                                 $href = $link;
1841                                         } else {
1842                                                 $title = Title::newFromText( $link );
1843                                                 if ( $title ) {
1844                                                         $title = $title->fixSpecialName();
1845                                                         $href = $title->getLocalURL();
1846                                                 } else {
1847                                                         $href = 'INVALID-TITLE';
1848                                                 }
1849                                         }
1850
1851                                         $bar[$heading][] = array(
1852                                                 'text' => $text,
1853                                                 'href' => $href,
1854                                                 'id' => 'n-' . strtr($line[1], ' ', '-'),
1855                                                 'active' => false
1856                                         );
1857                                 } else { continue; }
1858                         }
1859                 }
1860                 wfRunHooks('SkinBuildSidebar', array($this, &$bar));
1861                 if ( $wgEnableSidebarCache ) $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1862                 wfProfileOut( __METHOD__ );
1863                 return $bar;
1864         }
1865 }