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         // @fixme Should be protected :-\
  28         var $mTitle = null;
  29
  30         /** Constructor, call parent constructor */
  31         function Skin() { parent::__construct(); }
  32
  33         /**
  34          * Fetch the set of available skins.
  35          * @return array of strings
  36          * @static
  37          */
  38         static function getSkinNames() {
  39                 global $wgValidSkinNames;
  40                 static $skinsInitialised = false;
  41                 if ( !$skinsInitialised ) {
  42                         # Get a list of available skins
  43                         # Build using the regular expression '^(.*).php$'
  44                         # Array keys are all lower case, array value keep the case used by filename
  45                         #
  46                         wfProfileIn( __METHOD__ . '-init' );
  47                         global $wgStyleDirectory;
  48                         $skinDir = dir( $wgStyleDirectory );
  49
  50                         # while code from www.php.net
  51                         while( false !== ( $file = $skinDir->read() ) ) {
  52                                 // Skip non-PHP files, hidden files, and '.dep' includes
  53                                 $matches = array();
  54                                 if( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  55                                         $aSkin = $matches[1];
  56                                         $wgValidSkinNames[strtolower($aSkin)] = $aSkin;
  57                                 }
  58                         }
  59                         $skinDir->close();
  60                         $skinsInitialised = true;
  61                         wfProfileOut( __METHOD__ . '-init' );
  62                 }
  63                 return $wgValidSkinNames;
  64         }
  65
  66         /**
  67          * Fetch the list of usable skins in regards to $wgSkipSkins.
  68          * Useful for Special:Preferences and other places where you
  69          * only want to show skins users _can_ use.
  70          * @return array of strings
  71          */
  72         public static function getUsableSkins() {
  73                 global $wgSkipSkins;
  74                 $usableSkins = self::getSkinNames();
  75                 foreach ( $wgSkipSkins as $skip ) {
  76                         unset( $usableSkins[$skip] );
  77                 }
  78                 return $usableSkins;
  79         }
  80
  81         /**
  82          * Normalize a skin preference value to a form that can be loaded.
  83          * If a skin can't be found, it will fall back to the configured
  84          * default (or the old 'Classic' skin if that's broken).
  85          * @param string $key
  86          * @return string
  87          * @static
  88          */
  89         static function normalizeKey( $key ) {
  90                 global $wgDefaultSkin;
  91                 $skinNames = Skin::getSkinNames();
  92
  93                 if( $key == '' ) {
  94                         // Don't return the default immediately;
  95                         // in a misconfiguration we need to fall back.
  96                         $key = $wgDefaultSkin;
  97                 }
  98
  99                 if( isset( $skinNames[$key] ) ) {
 100                         return $key;
 101                 }
 102
 103                 // Older versions of the software used a numeric setting
 104                 // in the user preferences.
 105                 $fallback = array(
 106                         0 => $wgDefaultSkin,
 107                         1 => 'nostalgia',
 108                         2 => 'cologneblue' );
 109
 110                 if( isset( $fallback[$key] ) ){
 111                         $key = $fallback[$key];
 112                 }
 113
 114                 if( isset( $skinNames[$key] ) ) {
 115                         return $key;
 116                 } else {
 117                         return 'monobook';
 118                 }
 119         }
 120
 121         /**
 122          * Factory method for loading a skin of a given type
 123          * @param string $key 'monobook', 'standard', etc
 124          * @return Skin
 125          * @static
 126          */
 127         static function &newFromKey( $key ) {
 128                 global $wgStyleDirectory;
 129
 130                 $key = Skin::normalizeKey( $key );
 131
 132                 $skinNames = Skin::getSkinNames();
 133                 $skinName = $skinNames[$key];
 134                 $className = 'Skin'.ucfirst($key);
 135
 136                 # Grab the skin class and initialise it.
 137                 if ( !class_exists( $className ) ) {
 138                         // Preload base classes to work around APC/PHP5 bug
 139                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 140                         if( file_exists( $deps ) ) include_once( $deps );
 141                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 142
 143                         # Check if we got if not failback to default skin
 144                         if( !class_exists( $className ) ) {
 145                                 # DO NOT die if the class isn't found. This breaks maintenance
 146                                 # scripts and can cause a user account to be unrecoverable
 147                                 # except by SQL manipulation if a previously valid skin name
 148                                 # is no longer valid.
 149                                 wfDebug( "Skin class does not exist: $className\n" );
 150                                 $className = 'SkinMonobook';
 151                                 require_once( "{$wgStyleDirectory}/MonoBook.php" );
 152                         }
 153                 }
 154                 $skin = new $className;
 155                 return $skin;
 156         }
 157
 158         /** @return string path to the skin stylesheet */
 159         function getStylesheet() {
 160                 return 'common/wikistandard.css';
 161         }
 162
 163         /** @return string skin name */
 164         public function getSkinName() {
 165                 return $this->skinname;
 166         }
 167
 168         function qbSetting() {
 169                 global $wgOut, $wgUser;
 170
 171                 if ( $wgOut->isQuickbarSuppressed() ) { return 0; }
 172                 $q = $wgUser->getOption( 'quickbar', 0 );
 173                 return $q;
 174         }
 175
 176         function initPage( OutputPage $out ) {
 177                 global $wgFavicon, $wgAppleTouchIcon;
 178
 179                 wfProfileIn( __METHOD__ );
 180
 181                 # Generally the order of the favicon and apple-touch-icon links
 182                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 183                 # uses whichever one appears later in the HTML source.  Make sure
 184                 # apple-touch-icon is specified first to avoid this.
 185                 if( false !== $wgAppleTouchIcon ) {
 186                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 187                 }
 188
 189                 if( false !== $wgFavicon ) {
 190                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 191                 }
 192
 193                 # OpenSearch description link
 194                 $out->addLink( array(
 195                         'rel' => 'search',
 196                         'type' => 'application/opensearchdescription+xml',
 197                         'href' => wfScript( 'opensearch_desc' ),
 198                         'title' => wfMsgForContent( 'opensearch-desc' ),
 199                 ));
 200
 201                 $this->addMetadataLinks( $out );
 202
 203                 $this->mRevisionId = $out->mRevisionId;
 204
 205                 $this->preloadExistence();
 206
 207                 wfProfileOut( __METHOD__ );
 208         }
 209
 210         /**
 211          * Preload the existence of three commonly-requested pages in a single query
 212          */
 213         function preloadExistence() {
 214                 global $wgUser;
 215
 216                 // User/talk link
 217                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 218
 219                 // Other tab link
 220                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 221                         // nothing
 222                 } elseif ( $this->mTitle->isTalkPage() ) {
 223                         $titles[] = $this->mTitle->getSubjectPage();
 224                 } else {
 225                         $titles[] = $this->mTitle->getTalkPage();
 226                 }
 227
 228                 $lb = new LinkBatch( $titles );
 229                 $lb->execute();
 230         }
 231
 232         function addMetadataLinks( OutputPage $out ) {
 233                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 234                 global $wgRightsPage, $wgRightsUrl;
 235
 236                 if( $out->isArticleRelated() ) {
 237                         # note: buggy CC software only reads first "meta" link
 238                         if( $wgEnableCreativeCommonsRdf ) {
 239                                 $out->addMetadataLink( array(
 240                                         'title' => 'Creative Commons',
 241                                         'type' => 'application/rdf+xml',
 242                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 243                                 );
 244                         }
 245                         if( $wgEnableDublinCoreRdf ) {
 246                                 $out->addMetadataLink( array(
 247                                         'title' => 'Dublin Core',
 248                                         'type' => 'application/rdf+xml',
 249                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 250                                 );
 251                         }
 252                 }
 253                 $copyright = '';
 254                 if( $wgRightsPage ) {
 255                         $copy = Title::newFromText( $wgRightsPage );
 256                         if( $copy ) {
 257                                 $copyright = $copy->getLocalURL();
 258                         }
 259                 }
 260                 if( !$copyright && $wgRightsUrl ) {
 261                         $copyright = $wgRightsUrl;
 262                 }
 263                 if( $copyright ) {
 264                         $out->addLink( array(
 265                                 'rel' => 'copyright',
 266                                 'href' => $copyright )
 267                         );
 268                 }
 269         }
 270
 271         /**
 272          * Set some local variables
 273          */
 274         protected function setMembers(){
 275                 global $wgUser;
 276                 $this->mUser = $wgUser;
 277                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 278                 $this->usercss = false;
 279         }
 280
 281         /**
 282          * Set the title
 283          * @param Title $t The title to use
 284          */
 285         public function setTitle( $t ) {
 286                 $this->mTitle = $t;
 287         }
 288
 289         /** Get the title */
 290         public function getTitle() {
 291                 return $this->mTitle;
 292         }
 293
 294         function outputPage( OutputPage $out ) {
 295                 global $wgDebugComments;
 296                 wfProfileIn( __METHOD__ );
 297
 298                 $this->setMembers();
 299                 $this->initPage( $out );
 300
 301                 // See self::afterContentHook() for documentation
 302                 $afterContent = $this->afterContentHook();
 303
 304                 $out->out( $out->headElement( $this ) );
 305
 306                 $out->out( "\n<body" );
 307                 $ops = $this->getBodyOptions();
 308                 foreach ( $ops as $name => $val ) {
 309                         $out->out( " $name='$val'" );
 310                 }
 311                 $out->out( ">\n" );
 312                 if ( $wgDebugComments ) {
 313                         $out->out( "<!-- Wiki debugging output:\n" .
 314                           $out->mDebugtext . "-->\n" );
 315                 }
 316
 317                 $out->out( $this->beforeContent() );
 318
 319                 $out->out( $out->mBodytext . "\n" );
 320
 321                 $out->out( $this->afterContent() );
 322
 323                 $out->out( $afterContent );
 324
 325                 $out->out( $this->bottomScripts() );
 326
 327                 $out->out( wfReportTime() );
 328
 329                 $out->out( "\n</body></html>" );
 330                 wfProfileOut( __METHOD__ );
 331         }
 332
 333         static function makeVariablesScript( $data ) {
 334                 global $wgJsMimeType;
 335
 336                 $doneFirstVar = false;
 337                 $r = array( "<script type=\"$wgJsMimeType\">/*<![CDATA[*/\n" );
 338                 foreach ( $data as $name => $value ) {
 339                         $encValue = Xml::encodeJsVar( $value );
 340                         if ( $doneFirstVar )
 341                                 $r[] = ",\n$name=$encValue";
 342                         else {
 343                                 $r[] = "var $name=$encValue";
 344                                 $doneFirstVar = true;
 345                         }
 346                 }
 347                 # No need for ; since the script is terminating
 348                 $r[] = "\n/*]]>*/</script>\n";
 349
 350                 return implode( $r );
 351         }
 352
 353         /**
 354          * Make a <script> tag containing global variables
 355          * @param array $data Associative array containing one element:
 356          *     skinname => the skin name
 357          * The odd calling convention is for backwards compatibility
 358          * @TODO @FIXME Make this not depend on $wgTitle!
 359          */
 360         static function makeGlobalVariablesScript( $data ) {
 361                 global $wgScript, $wgTitle, $wgStylePath, $wgUser;
 362                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang, $wgVariant;
 363                 global $wgCanonicalNamespaceNames, $wgOut, $wgArticle;
 364                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 365                 global $wgUseAjax, $wgAjaxWatch;
 366                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 367                 global $wgRestrictionTypes, $wgLivePreview;
 368                 global $wgMWSuggestTemplate, $wgDBname, $wgEnableMWSuggest;
 369
 370                 $ns = $wgTitle->getNamespace();
 371                 $nsname = isset( $wgCanonicalNamespaceNames[ $ns ] ) ? $wgCanonicalNamespaceNames[ $ns ] : $wgTitle->getNsText();
 372                 $separatorTransTable = $wgContLang->separatorTransformTable();
 373                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
 374                 $compactSeparatorTransTable = array(
 375                         implode( "\t", array_keys( $separatorTransTable ) ),
 376                         implode( "\t", $separatorTransTable ),
 377                 );
 378                 $digitTransTable = $wgContLang->digitTransformTable();
 379                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
 380                 $compactDigitTransTable = array(
 381                         implode( "\t", array_keys( $digitTransTable ) ),
 382                         implode( "\t", $digitTransTable ),
 383                 );
 384
 385                 $vars = array(
 386                         'skin' => $data['skinname'],
 387                         'stylepath' => $wgStylePath,
 388                         'wgArticlePath' => $wgArticlePath,
 389                         'wgScriptPath' => $wgScriptPath,
 390                         'wgScript' => $wgScript,
 391                         'wgVariantArticlePath' => $wgVariantArticlePath,
 392                         'wgActionPaths' => (object)$wgActionPaths,
 393                         'wgServer' => $wgServer,
 394                         'wgCanonicalNamespace' => $nsname,
 395                         'wgCanonicalSpecialPageName' => SpecialPage::resolveAlias( $wgTitle->getDBkey() ),
 396                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 397                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 398                         'wgTitle' => $wgTitle->getText(),
 399                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 400                         'wgArticleId' => $wgTitle->getArticleId(),
 401                         'wgIsArticle' => $wgOut->isArticle(),
 402                         'wgUserName' => $wgUser->isAnon() ? NULL : $wgUser->getName(),
 403                         'wgUserGroups' => $wgUser->isAnon() ? NULL : $wgUser->getEffectiveGroups(),
 404                         'wgUserVariant' => $wgVariant->getCode(),
 405                         'wgUserLanguage' => $wgLang->getCode(),
 406                         'wgContentLanguage' => $wgContLang->getCode(),
 407                         'wgBreakFrames' => $wgBreakFrames,
 408                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 409                         'wgVersion' => $wgVersion,
 410                         'wgEnableAPI' => $wgEnableAPI,
 411                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 412                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
 413                         'wgDigitTransformTable' => $compactDigitTransTable,
 414                 );
 415                 if ( !( $wgContLang->hasVariants() ) ) {
 416                         unset( $vars['wgUserVariant'] );
 417                 }
 418
 419                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
 420                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 421                         $vars['wgDBname'] = $wgDBname;
 422                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 423                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 424                 }
 425
 426                 foreach( $wgRestrictionTypes as $type )
 427                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 428
 429                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
 430                         $vars['wgLivepreviewMessageLoading'] = wfMsg( 'livepreview-loading' );
 431                         $vars['wgLivepreviewMessageReady']   = wfMsg( 'livepreview-ready' );
 432                         $vars['wgLivepreviewMessageFailed']  = wfMsg( 'livepreview-failed' );
 433                         $vars['wgLivepreviewMessageError']   = wfMsg( 'livepreview-error' );
 434                 }
 435
 436                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 437                         $msgs = (object)array();
 438                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching' ) as $msgName ) {
 439                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 440                         }
 441                         $vars['wgAjaxWatch'] = $msgs;
 442                 }
 443
 444                 // Allow extensions to add their custom variables to the global JS variables
 445                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 446
 447                 return self::makeVariablesScript( $vars );
 448         }
 449
 450         /**
 451          * Return a random selection of the scripts we want in the header,
 452          * according to no particular rhyme or reason.  Various other scripts are
 453          * returned from a haphazard assortment of other functions scattered over
 454          * various files.  This entire hackish system needs to be burned to the
 455          * ground and rebuilt.
 456          *
 457          * @var $allowUserJs bool Should probably be identical to $wgAllowUserJs,
 458          *                        but is passed as a local variable for some
 459          *                        obscure reason.
 460          * @var $extraHtml string A bunch of raw HTML to jam into some arbitrary
 461          *                        place where MonoBook has historically wanted it.
 462          *                        Old-style skins formerly put it in a different
 463          *                        place, but if either of those is broken it's
 464          *                        likely to be the old-style skins.
 465          * @return string Raw HTML to output in some location in the <head> that's
 466          *                entirely arbitrary but which will probably break
 467          *                everything if you put it someplace else.
 468          */
 469         function getHeadScripts( $allowUserJs, $extraHtml = '' ) {
 470                 global $wgStylePath, $wgUser, $wgJsMimeType, $wgStyleVersion;
 471
 472                 $vars = self::makeGlobalVariablesScript( array( 'skinname' => $this->getSkinName() ) );
 473
 474                 $r = array( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js?$wgStyleVersion\"></script>\n$extraHtml" );
 475                 global $wgUseSiteJs;
 476                 if( $wgUseSiteJs ) {
 477                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
 478                         $r[] = "<script type=\"$wgJsMimeType\" src=\"".
 479                                 htmlspecialchars( self::makeUrl( '-',
 480                                         "action=raw$jsCache&gen=js&useskin=" .
 481                                         urlencode( $this->getSkinName() ) ) ) .
 482                                 "\"></script>";
 483                 }
 484                 if( $allowUserJs && $wgUser->isLoggedIn() ) {
 485                         $userpage = $wgUser->getUserPage();
 486                         $userjs = htmlspecialchars( self::makeUrl(
 487                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 488                                 'action=raw&ctype='.$wgJsMimeType ) );
 489                         $r[] = '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>";
 490                 }
 491                 return $vars . "\t" . implode ( "\n\t", $r );
 492         }
 493
 494         /**
 495          * To make it harder for someone to slip a user a fake
 496          * user-JavaScript or user-CSS preview, a random token
 497          * is associated with the login session. If it's not
 498          * passed back with the preview request, we won't render
 499          * the code.
 500          *
 501          * @param string $action
 502          * @return bool
 503          * @private
 504          */
 505         function userCanPreview( $action ) {
 506                 global $wgRequest, $wgUser;
 507
 508                 if( $action != 'submit' )
 509                         return false;
 510                 if( !$wgRequest->wasPosted() )
 511                         return false;
 512                 if( !$this->mTitle->userCanEditCssJsSubpage() )
 513                         return false;
 514                 return $wgUser->matchEditToken(
 515                         $wgRequest->getVal( 'wpEditToken' ) );
 516         }
 517
 518         /**
 519          * generated JavaScript action=raw&gen=js
 520          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 521          * nated together.  For some bizarre reason, it does *not* return any
 522          * custom user JS from subpages.  Huh?
 523          *
 524          * There's absolutely no reason to have separate Monobook/Common JSes.
 525          * Any JS that cares can just check the skin variable generated at the
 526          * top.  For now Monobook.js will be maintained, but it should be consi-
 527          * dered deprecated.
 528          *
 529          * @return string
 530          */
 531         public function generateUserJs() {
 532                 global $wgStylePath;
 533
 534                 wfProfileIn( __METHOD__ );
 535
 536                 $s = "/* generated javascript */\n";
 537                 $s .= "var skin = '" . Xml::escapeJsString( $this->getSkinName() ) . "';\n";
 538                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 539                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 540                 $commonJs = wfMsgForContent( 'common.js' );
 541                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 542                         $s .= $commonJs;
 543                 }
 544
 545                 $s .= "\n\n/* MediaWiki:".ucfirst( $this->getSkinName() ).".js */\n";
 546                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 547                 // by checking for default message content
 548                 $msgKey = ucfirst( $this->getSkinName() ).'.js';
 549                 $userJS = wfMsgForContent( $msgKey );
 550                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 551                         $s .= $userJS;
 552                 }
 553
 554                 wfProfileOut( __METHOD__ );
 555                 return $s;
 556         }
 557
 558         /**
 559          * Generate user stylesheet for action=raw&gen=css
 560          */
 561         public function generateUserStylesheet() {
 562                 wfProfileIn( __METHOD__ );
 563                 $s = "/* generated user stylesheet */\n" .
 564                         $this->reallyGenerateUserStylesheet();
 565                 wfProfileOut( __METHOD__ );
 566                 return $s;
 567         }
 568
 569         /**
 570          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 571          */
 572         protected function reallyGenerateUserStylesheet(){
 573                 global $wgUser;
 574                 $s = '';
 575                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 576                         $underline = $undopt ? 'underline' : 'none';
 577                         $s .= "a { text-decoration: $underline; }\n";
 578                 }
 579                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 580                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 581                 } else {
 582                         $s .= <<<END
 583 a.new, #quickbar a.new,
 584 a.stub, #quickbar a.stub {
 585         color: inherit;
 586 }
 587 a.new:after, #quickbar a.new:after {
 588         content: "?";
 589         color: #CC2200;
 590 }
 591 a.stub:after, #quickbar a.stub:after {
 592         content: "!";
 593         color: #772233;
 594 }
 595 END;
 596                 }
 597                 if( $wgUser->getOption( 'justify' ) ) {
 598                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 599                 }
 600                 if( !$wgUser->getOption( 'showtoc' ) ) {
 601                         $s .= "#toc { display: none; }\n";
 602                 }
 603                 if( !$wgUser->getOption( 'editsection' ) ) {
 604                         $s .= ".editsection { display: none; }\n";
 605                 }
 606                 return $s;
 607         }
 608
 609         /**
 610          * @private
 611          */
 612         function setupUserCss( OutputPage $out ) {
 613                 global $wgRequest, $wgContLang, $wgUser;
 614                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 615
 616                 wfProfileIn( __METHOD__ );
 617
 618                 $this->setupSkinUserCss( $out );
 619
 620                 $siteargs = array(
 621                         'action' => 'raw',
 622                         'maxage' => $wgSquidMaxage,
 623                 );
 624
 625                 // Add any extension CSS
 626                 foreach( $out->getExtStyle() as $tag ) {
 627                         $out->addStyle( $tag['href'] );
 628                 }
 629
 630                 // If we use the site's dynamic CSS, throw that in, too
 631                 // Per-site custom styles
 632                 if( $wgUseSiteCss ) {
 633                         global $wgHandheldStyle;
 634                         $query = wfArrayToCGI( array(
 635                                 'usemsgcache' => 'yes',
 636                                 'ctype' => 'text/css',
 637                                 'smaxage' => $wgSquidMaxage
 638                         ) + $siteargs );
 639                         # Site settings must override extension css! (bug 15025)
 640                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 641                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 642                         if( $wgHandheldStyle ) {
 643                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 644                         }
 645                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 646                 }
 647
 648                 if( $wgUser->isLoggedIn() ) {
 649                         // Ensure that logged-in users' generated CSS isn't clobbered
 650                         // by anons' publicly cacheable generated CSS.
 651                         $siteargs['smaxage'] = '0';
 652                         $siteargs['ts'] = $wgUser->mTouched;
 653                 }
 654                 // Per-user styles based on preferences
 655                 $siteargs['gen'] = 'css';
 656                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 657                         $siteargs['useskin'] = $us;
 658                 }
 659                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 660
 661                 // Per-user custom style pages
 662                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 663                         $action = $wgRequest->getVal( 'action' );
 664                         # If we're previewing the CSS page, use it
 665                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 666                                 $previewCss = $wgRequest->getText( 'wpTextbox1' );
 667                                 // @FIXME: properly escape the cdata!
 668                                 $this->usercss = "/*<![CDATA[*/\n" . $previewCss . "/*]]>*/";
 669                         } else {
 670                                 $out->addStyle( self::makeUrl( $this->userpage . '/' . $this->getSkinName() .'.css',
 671                                         'action=raw&ctype=text/css' ) );
 672                         }
 673                 }
 674
 675                 wfProfileOut( __METHOD__ );
 676         }
 677
 678         /**
 679          * Add skin specific stylesheets
 680          * @param $out OutputPage
 681          */
 682         function setupSkinUserCss( OutputPage $out ) {
 683                 $out->addStyle( 'common/shared.css' );
 684                 $out->addStyle( 'common/oldshared.css' );
 685                 $out->addStyle( $this->getStylesheet() );
 686                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 687         }
 688
 689         function getBodyOptions() {
 690                 global $wgUser, $wgOut, $wgRequest, $wgContLang;
 691
 692                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 693
 694                 if ( 0 != $this->mTitle->getNamespace() ) {
 695                         $a = array( 'bgcolor' => '#ffffec' );
 696                 }
 697                 else $a = array( 'bgcolor' => '#FFFFFF' );
 698                 if( $wgOut->isArticle() && $wgUser->getOption( 'editondblclick' ) &&
 699                   $this->mTitle->quickUserCan( 'edit' ) ) {
 700                         $s = $this->mTitle->getFullURL( $this->editUrlOptions() );
 701                         $s = 'document.location = "' .Xml::escapeJsString( $s ) .'";';
 702                         $a += array( 'ondblclick' => $s );
 703                 }
 704                 $a['onload'] = $wgOut->getOnloadHandler();
 705                 $a['class'] =
 706                         'mediawiki' .
 707                         ' '.( $wgContLang->isRTL() ? 'rtl' : 'ltr' ).
 708                         ' '.$this->getPageClasses( $this->mTitle ) .
 709                         ' skin-'. Sanitizer::escapeClass( $this->getSkinName() );
 710                 return $a;
 711         }
 712
 713         function getPageClasses( $title ) {
 714                 $numeric = 'ns-'.$title->getNamespace();
 715                 if( $title->getNamespace() == NS_SPECIAL ) {
 716                         $type = 'ns-special';
 717                 } elseif( $title->isTalkPage() ) {
 718                         $type = 'ns-talk';
 719                 } else {
 720                         $type = 'ns-subject';
 721                 }
 722                 $name = Sanitizer::escapeClass( 'page-'.$title->getPrefixedText() );
 723                 return "$numeric $type $name";
 724         }
 725
 726         /**
 727          * URL to the logo
 728          */
 729         function getLogo() {
 730                 global $wgLogo;
 731                 return $wgLogo;
 732         }
 733
 734         /**
 735          * This will be called immediately after the <body> tag.  Split into
 736          * two functions to make it easier to subclass.
 737          */
 738         function beforeContent() {
 739                 return $this->doBeforeContent();
 740         }
 741
 742         function doBeforeContent() {
 743                 global $wgContLang;
 744                 wfProfileIn( __METHOD__ );
 745
 746                 $s = '';
 747                 $qb = $this->qbSetting();
 748
 749                 if( $langlinks = $this->otherLanguages() ) {
 750                         $rows = 2;
 751                         $borderhack = '';
 752                 } else {
 753                         $rows = 1;
 754                         $langlinks = false;
 755                         $borderhack = 'class="top"';
 756                 }
 757
 758                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 759                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 760
 761                 $shove = ( $qb != 0 );
 762                 $left = ( $qb == 1 || $qb == 3 );
 763                 if( $wgContLang->isRTL() ) $left = !$left;
 764
 765                 if( !$shove ) {
 766                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 767                           $this->logoText() . '</td>';
 768                 } elseif( $left ) {
 769                         $s .= $this->getQuickbarCompensator( $rows );
 770                 }
 771                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 772                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 773
 774                 $s .= $this->topLinks();
 775                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 776
 777                 $r = $wgContLang->isRTL() ? 'left' : 'right';
 778                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 779                 $s .= $this->nameAndLogin();
 780                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 781
 782                 if ( $langlinks ) {
 783                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 784                 }
 785
 786                 if ( $shove && !$left ) { # Right
 787                         $s .= $this->getQuickbarCompensator( $rows );
 788                 }
 789                 $s .= "</tr>\n</table>\n</div>\n";
 790                 $s .= "\n<div id='article'>\n";
 791
 792                 $notice = wfGetSiteNotice();
 793                 if( $notice ) {
 794                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 795                 }
 796                 $s .= $this->pageTitle();
 797                 $s .= $this->pageSubtitle();
 798                 $s .= $this->getCategories();
 799                 wfProfileOut( __METHOD__ );
 800                 return $s;
 801         }
 802
 803
 804         function getCategoryLinks() {
 805                 global $wgOut, $wgUseCategoryBrowser;
 806                 global $wgContLang, $wgUser;
 807
 808                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 809
 810                 # Separator
 811                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 812
 813                 // Use Unicode bidi embedding override characters,
 814                 // to make sure links don't smash each other up in ugly ways.
 815                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 816                 $embed = "<span dir='$dir'>";
 817                 $pop = '</span>';
 818
 819                 $allCats = $wgOut->getCategoryLinks();
 820                 $s = '';
 821                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 822                 if ( !empty( $allCats['normal'] ) ) {
 823                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 824
 825                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 826                         $s .= '<div id="mw-normal-catlinks">' .
 827                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 828                                 . $colon . $t . '</div>';
 829                 }
 830
 831                 # Hidden categories
 832                 if ( isset( $allCats['hidden'] ) ) {
 833                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 834                                 $class ='mw-hidden-cats-user-shown';
 835                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 836                                 $class = 'mw-hidden-cats-ns-shown';
 837                         } else {
 838                                 $class = 'mw-hidden-cats-hidden';
 839                         }
 840                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 841                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 842                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 843                                 "</div>";
 844                 }
 845
 846                 # optional 'dmoz-like' category browser. Will be shown under the list
 847                 # of categories an article belong to
 848                 if( $wgUseCategoryBrowser ){
 849                         $s .= '<br /><hr />';
 850
 851                         # get a big array of the parents tree
 852                         $parenttree = $this->mTitle->getParentCategoryTree();
 853                         # Skin object passed by reference cause it can not be
 854                         # accessed under the method subfunction drawCategoryBrowser
 855                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 856                         # Clean out bogus first entry and sort them
 857                         unset( $tempout[0] );
 858                         asort( $tempout );
 859                         # Output one per line
 860                         $s .= implode( "<br />\n", $tempout );
 861                 }
 862
 863                 return $s;
 864         }
 865
 866         /**
 867          * Render the array as a serie of links.
 868          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 869          * @param &skin Object: skin passed by reference
 870          * @return String separated by &gt;, terminate with "\n"
 871          */
 872         function drawCategoryBrowser( $tree, &$skin ){
 873                 $return = '';
 874                 foreach( $tree as $element => $parent ) {
 875                         if( empty( $parent ) ) {
 876                                 # element start a new list
 877                                 $return .= "\n";
 878                         } else {
 879                                 # grab the others elements
 880                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 881                         }
 882                         # add our current element to the list
 883                         $eltitle = Title::newFromText( $element );
 884                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 885                 }
 886                 return $return;
 887         }
 888
 889         function getCategories() {
 890                 $catlinks=$this->getCategoryLinks();
 891
 892                 $classes = 'catlinks';
 893
 894                 if( strpos( $catlinks, '<div id="mw-normal-catlinks">' ) === false &&
 895                         strpos( $catlinks, '<div id="mw-hidden-catlinks" class="mw-hidden-cats-hidden">' ) !== false ) {
 896                         $classes .= ' catlinks-allhidden';
 897                 }
 898
 899                 if( !empty( $catlinks ) ){
 900                         return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 901                 }
 902         }
 903
 904         function getQuickbarCompensator( $rows = 1 ) {
 905                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 906         }
 907
 908         /**
 909          * This runs a hook to allow extensions placing their stuff after content
 910          * and article metadata (e.g. categories).
 911          * Note: This function has nothing to do with afterContent().
 912          *
 913          * This hook is placed here in order to allow using the same hook for all
 914          * skins, both the SkinTemplate based ones and the older ones, which directly
 915          * use this class to get their data.
 916          *
 917          * The output of this function gets processed in SkinTemplate::outputPage() for
 918          * the SkinTemplate based skins, all other skins should directly echo it.
 919          *
 920          * Returns an empty string by default, if not changed by any hook function.
 921          */
 922         protected function afterContentHook() {
 923                 $data = '';
 924
 925                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ){
 926                         // adding just some spaces shouldn't toggle the output
 927                         // of the whole <div/>, so we use trim() here
 928                         if( trim( $data ) != '' ){
 929                                 // Doing this here instead of in the skins to
 930                                 // ensure that the div has the same ID in all
 931                                 // skins
 932                                 $data = "<div id='mw-data-after-content'>\n" .
 933                                         "\t$data\n" .
 934                                         "</div>\n";
 935                         }
 936                 } else {
 937                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 938                 }
 939
 940                 return $data;
 941         }
 942
 943         /**
 944          * Generate debug data HTML for displaying at the bottom of the main content
 945          * area.
 946          * @return String HTML containing debug data, if enabled (otherwise empty).
 947          */
 948         protected function generateDebugHTML() {
 949                 global $wgShowDebug, $wgOut;
 950                 if ( $wgShowDebug ) {
 951                         $listInternals = str_replace( "\n", "</li>\n<li>", htmlspecialchars( $wgOut->mDebugtext ) );
 952                         return "\n<hr>\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\"><li>" .
 953                                 $listInternals . "</li></ul>\n";
 954                 }
 955                 return '';
 956         }
 957
 958         /**
 959          * This gets called shortly before the </body> tag.
 960          * @return String HTML to be put before </body>
 961          */
 962         function afterContent() {
 963                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 964                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 965         }
 966
 967         /**
 968          * This gets called shortly before the </body> tag.
 969          * @return String HTML-wrapped JS code to be put before </body>
 970          */
 971         function bottomScripts() {
 972                 global $wgJsMimeType;
 973                 $bottomScriptText = "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 974                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 975                 return $bottomScriptText;
 976         }
 977
 978         /** @return string Retrievied from HTML text */
 979         function printSource() {
 980                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 981                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 982         }
 983
 984         function printFooter() {
 985                 return "<p>" .  $this->printSource() .
 986                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 987         }
 988
 989         /** overloaded by derived classes */
 990         function doAfterContent() { return '</div></div>'; }
 991
 992         function pageTitleLinks() {
 993                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 994
 995                 $oldid = $wgRequest->getVal( 'oldid' );
 996                 $diff = $wgRequest->getVal( 'diff' );
 997                 $action = $wgRequest->getText( 'action' );
 998
 999                 $s[] = $this->printableLink();
1000                 $disclaimer = $this->disclaimerLink(); # may be empty
1001                 if( $disclaimer ) {
1002                         $s[] = $disclaimer;
1003                 }
1004                 $privacy = $this->privacyLink(); # may be empty too
1005                 if( $privacy ) {
1006                         $s[] = $privacy;
1007                 }
1008
1009                 if ( $wgOut->isArticleRelated() ) {
1010                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1011                                 $name = $this->mTitle->getDBkey();
1012                                 $image = wfFindFile( $this->mTitle );
1013                                 if( $image ) {
1014                                         $link = htmlspecialchars( $image->getURL() );
1015                                         $style = $this->getInternalLinkAttributes( $link, $name );
1016                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1017                                 }
1018                         }
1019                 }
1020                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1021                         $s[] .= $this->link(
1022                                         $this->mTitle,
1023                                         wfMsg( 'currentrev' ),
1024                                         array(),
1025                                         array(),
1026                                         array( 'known', 'noclasses' )
1027                         );
1028                 }
1029
1030                 if ( $wgUser->getNewtalk() ) {
1031                         # do not show "You have new messages" text when we are viewing our
1032                         # own talk page
1033                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1034                                 $tl = $this->link(
1035                                         $wgUser->getTalkPage(),
1036                                         wfMsgHtml( 'newmessageslink' ),
1037                                         array(),
1038                                         array( 'redirect' => 'no' ),
1039                                         array( 'known', 'noclasses' )
1040                                 );
1041
1042                                 $dl = $this->link(
1043                                         $wgUser->getTalkPage(),
1044                                         wfMsgHtml( 'newmessagesdifflink' ),
1045                                         array(),
1046                                         array( 'diff' => 'cur' ),
1047                                         array( 'known', 'noclasses' )
1048                                 );
1049                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1050                                 # disable caching
1051                                 $wgOut->setSquidMaxage( 0 );
1052                                 $wgOut->enableClientCache( false );
1053                         }
1054                 }
1055
1056                 $undelete = $this->getUndeleteLink();
1057                 if( !empty( $undelete ) ) {
1058                         $s[] = $undelete;
1059                 }
1060                 return $wgLang->pipeList( $s );
1061         }
1062
1063         function getUndeleteLink() {
1064                 global $wgUser, $wgContLang, $wgLang, $wgRequest;
1065
1066                 $action = $wgRequest->getVal( 'action', 'view' );
1067
1068                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1069                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1070                         $n = $this->mTitle->isDeleted();
1071                         if ( $n ) {
1072                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1073                                         $msg = 'thisisdeleted';
1074                                 } else {
1075                                         $msg = 'viewdeleted';
1076                                 }
1077                                 return wfMsg(
1078                                         $msg,
1079                                         $this->link(
1080                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1081                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1082                                                 array(),
1083                                                 array(),
1084                                                 array( 'known', 'noclasses' )
1085                                         )
1086                                 );
1087                         }
1088                 }
1089                 return '';
1090         }
1091
1092         function printableLink() {
1093                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1094
1095                 $s = array();
1096
1097                 if ( !$wgRequest->getBool( 'printable' ) ) {
1098                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1099                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1100                 }
1101
1102                 if( $wgOut->isSyndicated() ) {
1103                         foreach( $wgFeedClasses as $format => $class ) {
1104                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1105                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1106                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1107                         }
1108                 }
1109                 return $wgLang->pipeList( $s );
1110         }
1111
1112         function pageTitle() {
1113                 global $wgOut;
1114                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1115                 return $s;
1116         }
1117
1118         function pageSubtitle() {
1119                 global $wgOut;
1120
1121                 $sub = $wgOut->getSubtitle();
1122                 if ( '' == $sub ) {
1123                         global $wgExtraSubtitle;
1124                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1125                 }
1126                 $subpages = $this->subPageSubtitle();
1127                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1128                 $s = "<p class='subtitle'>{$sub}</p>\n";
1129                 return $s;
1130         }
1131
1132         function subPageSubtitle() {
1133                 $subpages = '';
1134                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) )
1135                         return $subpages;
1136
1137                 global $wgOut;
1138                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1139                         $ptext = $this->mTitle->getPrefixedText();
1140                         if( preg_match( '/\//', $ptext ) ) {
1141                                 $links = explode( '/', $ptext );
1142                                 array_pop( $links );
1143                                 $c = 0;
1144                                 $growinglink = '';
1145                                 $display = '';
1146                                 foreach( $links as $link ) {
1147                                         $growinglink .= $link;
1148                                         $display .= $link;
1149                                         $linkObj = Title::newFromText( $growinglink );
1150                                         if( is_object( $linkObj ) && $linkObj->exists() ){
1151                                                 $getlink = $this->link(
1152                                                         $linkObj,
1153                                                         htmlspecialchars( $display ),
1154                                                         array(),
1155                                                         array(),
1156                                                         array( 'known', 'noclasses' )
1157                                                 );
1158                                                 $c++;
1159                                                 if( $c > 1 ) {
1160                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1161                                                 } else  {
1162                                                         $subpages .= '&lt; ';
1163                                                 }
1164                                                 $subpages .= $getlink;
1165                                                 $display = '';
1166                                         } else {
1167                                                 $display .= '/';
1168                                         }
1169                                         $growinglink .= '/';
1170                                 }
1171                         }
1172                 }
1173                 return $subpages;
1174         }
1175
1176         /**
1177          * Returns true if the IP should be shown in the header
1178          */
1179         function showIPinHeader() {
1180                 global $wgShowIPinHeader;
1181                 return $wgShowIPinHeader && session_id() != '';
1182         }
1183
1184         function nameAndLogin() {
1185                 global $wgUser, $wgLang, $wgContLang;
1186
1187                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1188
1189                 $ret = '';
1190                 if ( $wgUser->isAnon() ) {
1191                         if( $this->showIPinHeader() ) {
1192                                 $name = wfGetIP();
1193
1194                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1195                                         $wgLang->getNsText( NS_TALK ) );
1196
1197                                 $ret .= "$name ($talkLink)";
1198                         } else {
1199                                 $ret .= wfMsg( 'notloggedin' );
1200                         }
1201
1202                         $returnTo = $this->mTitle->getPrefixedDBkey();
1203                         $query = array();
1204                         if ( $logoutPage != $returnTo ) {
1205                                 $query['returnto'] = $returnTo;
1206                         }
1207
1208                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1209                                 ? 'nav-login-createaccount'
1210                                 : 'login';
1211                         $ret .= "\n<br />" . $this->link(
1212                                 SpecialPage::getTitleFor( 'Userlogin' ),
1213                                 wfMsg( $loginlink ), array(), $query
1214                         );
1215                 } else {
1216                         $returnTo = $this->mTitle->getPrefixedDBkey();
1217                         $talkLink = $this->link( $wgUser->getTalkPage(),
1218                                 $wgLang->getNsText( NS_TALK ) );
1219
1220                         $ret .= $this->link( $wgUser->getUserPage(),
1221                                 htmlspecialchars( $wgUser->getName() ) );
1222                         $ret .= " ($talkLink)<br />";
1223                         $ret .= $wgLang->pipeList( array(
1224                                 $this->link(
1225                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1226                                         array(), array( 'returnto' => $returnTo )
1227                                 ),
1228                                 $this->specialLink( 'preferences' ),
1229                         ) );
1230                 }
1231                 $ret = $wgLang->pipeList( array(
1232                         $ret,
1233                         $this->link(
1234                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1235                                 wfMsg( 'help' )
1236                         ),
1237                 ) );
1238
1239                 return $ret;
1240         }
1241
1242         function getSearchLink() {
1243                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1244                 return $searchPage->getLocalURL();
1245         }
1246
1247         function escapeSearchLink() {
1248                 return htmlspecialchars( $this->getSearchLink() );
1249         }
1250
1251         function searchForm() {
1252                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1253                 $search = $wgRequest->getText( 'search' );
1254
1255                 $s = '<form id="searchform'.$this->searchboxes.'" name="search" class="inline" method="post" action="'
1256                   . $this->escapeSearchLink() . "\">\n"
1257                   . '<input type="text" id="searchInput'.$this->searchboxes.'" name="search" size="19" value="'
1258                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1259                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1260
1261                 if( $wgUseTwoButtonsSearchForm )
1262                         $s .= '&nbsp;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1263                 else
1264                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1265
1266                 $s .= '</form>';
1267
1268                 // Ensure unique id's for search boxes made after the first
1269                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1270
1271                 return $s;
1272         }
1273
1274         function topLinks() {
1275                 global $wgOut;
1276
1277                 $s = array(
1278                         $this->mainPageLink(),
1279                         $this->specialLink( 'recentchanges' )
1280                 );
1281
1282                 if ( $wgOut->isArticleRelated() ) {
1283                         $s[] = $this->editThisPage();
1284                         $s[] = $this->historyLink();
1285                 }
1286                 # Many people don't like this dropdown box
1287                 #$s[] = $this->specialPagesList();
1288
1289                 if( $this->variantLinks() ) {
1290                         $s[] = $this->variantLinks();
1291                 }
1292
1293                 if( $this->extensionTabLinks() ) {
1294                         $s[] = $this->extensionTabLinks();
1295                 }
1296
1297                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1298                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1299         }
1300
1301         /**
1302          * Compatibility for extensions adding functionality through tabs.
1303          * Eventually these old skins should be replaced with SkinTemplate-based
1304          * versions, sigh...
1305          * @return string
1306          */
1307         function extensionTabLinks() {
1308                 $tabs = array();
1309                 $out = '';
1310                 $s = array();
1311                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1312                 foreach( $tabs as $tab ) {
1313                         $s[] = Xml::element( 'a',
1314                                 array( 'href' => $tab['href'] ),
1315                                 $tab['text'] );
1316                 }
1317
1318                 if( count( $s ) ) {
1319                         global $wgLang;
1320
1321                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1322                         $out .= $wgLang->pipeList( $s );
1323                 }
1324
1325                 return $out;
1326         }
1327
1328         /**
1329          * Language/charset variant links for classic-style skins
1330          * @return string
1331          */
1332         function variantLinks() {
1333                 $s = '';
1334                 /* show links to different language variants */
1335                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1336                 $variants = $wgContLang->getVariants();
1337                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1338                         foreach( $variants as $code ) {
1339                                 $varname = $wgContLang->getVariantname( $code );
1340                                 if( $varname == 'disable' )
1341                                         continue;
1342                                 $s = $wgLang->pipeList( array(
1343                                         $s,
1344                                         '<a href="' . $this->mTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1345                                 ) );
1346                         }
1347                 }
1348                 return $s;
1349         }
1350
1351         function bottomLinks() {
1352                 global $wgOut, $wgUser, $wgUseTrackbacks;
1353                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1354
1355                 $s = '';
1356                 if ( $wgOut->isArticleRelated() ) {
1357                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1358                         if ( $wgUser->isLoggedIn() ) {
1359                                 $element[] = $this->watchThisPage();
1360                         }
1361                         $element[] = $this->talkLink();
1362                         $element[] = $this->historyLink();
1363                         $element[] = $this->whatLinksHere();
1364                         $element[] = $this->watchPageLinksLink();
1365
1366                         if( $wgUseTrackbacks )
1367                                 $element[] = $this->trackbackLink();
1368
1369                         if ( $this->mTitle->getNamespace() == NS_USER
1370                             || $this->mTitle->getNamespace() == NS_USER_TALK ){
1371                                 $id = User::idFromName( $this->mTitle->getText() );
1372                                 $ip = User::isIP( $this->mTitle->getText() );
1373
1374                                 if( $id || $ip ) { # both anons and non-anons have contri list
1375                                         $element[] = $this->userContribsLink();
1376                                 }
1377                                 if( $this->showEmailUser( $id ) ) {
1378                                         $element[] = $this->emailUserLink();
1379                                 }
1380                         }
1381
1382                         $s = implode( $element, $sep );
1383
1384                         if ( $this->mTitle->getArticleId() ) {
1385                                 $s .= "\n<br />";
1386                                 if( $wgUser->isAllowed( 'delete' ) ) { $s .= $this->deleteThisPage(); }
1387                                 if( $wgUser->isAllowed( 'protect' ) ) { $s .= $sep . $this->protectThisPage(); }
1388                                 if( $wgUser->isAllowed( 'move' ) ) { $s .= $sep . $this->moveThisPage(); }
1389                         }
1390                         $s .= "<br />\n" . $this->otherLanguages();
1391                 }
1392
1393                 return $s;
1394         }
1395
1396         function pageStats() {
1397                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1398                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1399
1400                 $oldid = $wgRequest->getVal( 'oldid' );
1401                 $diff = $wgRequest->getVal( 'diff' );
1402                 if ( ! $wgOut->isArticle() ) { return ''; }
1403                 if( !$wgArticle instanceOf Article ) { return ''; }
1404                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1405                 if ( 0 == $wgArticle->getID() ) { return ''; }
1406
1407                 $s = '';
1408                 if ( !$wgDisableCounters ) {
1409                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1410                         if ( $count ) {
1411                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1412                         }
1413                 }
1414
1415                 if( $wgMaxCredits != 0 ){
1416                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1417                 } else {
1418                         $s .= $this->lastModified();
1419                 }
1420
1421                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1422                         $dbr = wfGetDB( DB_SLAVE );
1423                         $res = $dbr->select( 'watchlist',
1424                                 array( 'COUNT(*) AS n' ),
1425                                 array( 'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ), 'wl_namespace' => $this->mTitle->getNamespace() ),
1426                                 __METHOD__
1427                         );
1428                         $x = $dbr->fetchObject( $res );
1429
1430                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1431                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1432                         );
1433                 }
1434
1435                 return $s . ' ' .  $this->getCopyright();
1436         }
1437
1438         function getCopyright( $type = 'detect' ) {
1439                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1440
1441                 if ( $type == 'detect' ) {
1442                         $diff = $wgRequest->getVal( 'diff' );
1443                         $isCur = $wgArticle && $wgArticle->isCurrent();
1444                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1445                                 $type = 'history';
1446                         } else {
1447                                 $type = 'normal';
1448                         }
1449                 }
1450
1451                 if ( $type == 'history' ) {
1452                         $msg = 'history_copyright';
1453                 } else {
1454                         $msg = 'copyright';
1455                 }
1456
1457                 $out = '';
1458                 if( $wgRightsPage ) {
1459                         $title = Title::newFromText( $wgRightsPage );
1460                         $link = $this->linkKnown( $title, $wgRightsText );
1461                 } elseif( $wgRightsUrl ) {
1462                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1463                 } elseif( $wgRightsText ) {
1464                         $link = $wgRightsText;
1465                 } else {
1466                         # Give up now
1467                         return $out;
1468                 }
1469                 // Allow for site and per-namespace customization of copyright notice.
1470                 wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link ) );
1471
1472                 $out .= wfMsgForContent( $msg, $link );
1473                 return $out;
1474         }
1475
1476         function getCopyrightIcon() {
1477                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1478                 $out = '';
1479                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1480                         $out = $wgCopyrightIcon;
1481                 } else if ( $wgRightsIcon ) {
1482                         $icon = htmlspecialchars( $wgRightsIcon );
1483                         if ( $wgRightsUrl ) {
1484                                 $url = htmlspecialchars( $wgRightsUrl );
1485                                 $out .= '<a href="'.$url.'">';
1486                         }
1487                         $text = htmlspecialchars( $wgRightsText );
1488                         $out .= "<img src=\"$icon\" alt='$text' />";
1489                         if ( $wgRightsUrl ) {
1490                                 $out .= '</a>';
1491                         }
1492                 }
1493                 return $out;
1494         }
1495
1496         function getPoweredBy() {
1497                 global $wgStylePath;
1498                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1499                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="Powered by MediaWiki" /></a>';
1500                 return $img;
1501         }
1502
1503         function lastModified() {
1504                 global $wgLang, $wgArticle;
1505                 if( $this->mRevisionId ) {
1506                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1507                 } else {
1508                         $timestamp = $wgArticle->getTimestamp();
1509                 }
1510                 if ( $timestamp ) {
1511                         $d = $wgLang->date( $timestamp, true );
1512                         $t = $wgLang->time( $timestamp, true );
1513                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1514                 } else {
1515                         $s = '';
1516                 }
1517                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1518                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1519                 }
1520                 return $s;
1521         }
1522
1523         function logoText( $align = '' ) {
1524                 if ( '' != $align ) {
1525                         $a = " align='{$align}'";
1526                 } else {
1527                         $a = '';
1528                 }
1529
1530                 $mp = wfMsg( 'mainpage' );
1531                 $mptitle = Title::newMainPage();
1532                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1533
1534                 $logourl = $this->getLogo();
1535                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1536                 return $s;
1537         }
1538
1539         /**
1540          * show a drop-down box of special pages
1541          */
1542         function specialPagesList() {
1543                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1544                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1545                 foreach ( $pages as $name => $page ) {
1546                         $pages[$name] = $page->getDescription();
1547                 }
1548
1549                 $go = wfMsg( 'go' );
1550                 $sp = wfMsg( 'specialpages' );
1551                 $spp = $wgContLang->specialPage( 'Specialpages' );
1552
1553                 $s = '<form id="specialpages" method="get" ' .
1554                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1555                 $s .= "<select name=\"wpDropdown\">\n";
1556                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1557
1558
1559                 foreach ( $pages as $name => $desc ) {
1560                         $p = $wgContLang->specialPage( $name );
1561                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1562                 }
1563                 $s .= "</select>\n";
1564                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1565                 $s .= "</form>\n";
1566                 return $s;
1567         }
1568
1569         function mainPageLink() {
1570                 $s = $this->link(
1571                         Title::newMainPage(),
1572                         wfMsg( 'mainpage' ),
1573                         array(),
1574                         array(),
1575                         array( 'known', 'noclasses' )
1576                 );
1577                 return $s;
1578         }
1579
1580         function copyrightLink() {
1581                 $title = Title::newFromText( wfMsgForContent( 'copyrightpage' ) );
1582                 $s = $this->linkKnown(
1583                         $title,
1584                         wfMsg( 'copyrightpagename' )
1585                 );
1586                 return $s;
1587         }
1588
1589         private function footerLink ( $desc, $page ) {
1590                 // if the link description has been set to "-" in the default language,
1591                 if ( wfMsgForContent( $desc )  == '-') {
1592                         // then it is disabled, for all languages.
1593                         return '';
1594                 } else {
1595                         // Otherwise, we display the link for the user, described in their
1596                         // language (which may or may not be the same as the default language),
1597                         // but we make the link target be the one site-wide page.
1598                         $title = Title::newFromText( wfMsgForContent( $page ) );
1599                         return $this->linkKnown(
1600                                 $title,
1601                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1602                         );
1603                 }
1604         }
1605
1606         function privacyLink() {
1607                 return $this->footerLink( 'privacy', 'privacypage' );
1608         }
1609
1610         function aboutLink() {
1611                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1612         }
1613
1614         function disclaimerLink() {
1615                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1616         }
1617
1618         function editThisPage() {
1619                 global $wgOut;
1620
1621                 if ( !$wgOut->isArticleRelated() ) {
1622                         $s = wfMsg( 'protectedpage' );
1623                 } else {
1624                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1625                                 $t = wfMsg( 'editthispage' );
1626                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1627                                 $t = wfMsg( 'create-this-page' );
1628                         } else {
1629                                 $t = wfMsg( 'viewsource' );
1630                         }
1631
1632                         $s = $this->link(
1633                                 $this->mTitle,
1634                                 $t,
1635                                 array(),
1636                                 $this->editUrlOptions(),
1637                                 array( 'known', 'noclasses' )
1638                         );
1639                 }
1640                 return $s;
1641         }
1642
1643         /**
1644          * Return URL options for the 'edit page' link.
1645          * This may include an 'oldid' specifier, if the current page view is such.
1646          *
1647          * @return array
1648          * @private
1649          */
1650         function editUrlOptions() {
1651                 global $wgArticle;
1652
1653                 $options = array( 'action' => 'edit' );
1654
1655                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1656                         $options['oldid'] = intval( $this->mRevisionId );
1657                 }
1658
1659                 return $options;
1660         }
1661
1662         function deleteThisPage() {
1663                 global $wgUser, $wgRequest;
1664
1665                 $diff = $wgRequest->getVal( 'diff' );
1666                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1667                         $t = wfMsg( 'deletethispage' );
1668
1669                         $s = $this->link(
1670                                 $this->mTitle,
1671                                 $t,
1672                                 array(),
1673                                 array( 'action' => 'delete' ),
1674                                 array( 'known', 'noclasses' )
1675                         );
1676                 } else {
1677                         $s = '';
1678                 }
1679                 return $s;
1680         }
1681
1682         function protectThisPage() {
1683                 global $wgUser, $wgRequest;
1684
1685                 $diff = $wgRequest->getVal( 'diff' );
1686                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1687                         if ( $this->mTitle->isProtected() ) {
1688                                 $text = wfMsg( 'unprotectthispage' );
1689                                 $query = array( 'action' => 'unprotect' );
1690                         } else {
1691                                 $text = wfMsg( 'protectthispage' );
1692                                 $query = array( 'action' => 'protect' );
1693                         }
1694
1695                         $s = $this->link(
1696                                 $this->mTitle,
1697                                 $text,
1698                                 array(),
1699                                 $query,
1700                                 array( 'known', 'noclasses' )
1701                         );
1702                 } else {
1703                         $s = '';
1704                 }
1705                 return $s;
1706         }
1707
1708         function watchThisPage() {
1709                 global $wgOut;
1710                 ++$this->mWatchLinkNum;
1711
1712                 if ( $wgOut->isArticleRelated() ) {
1713                         if ( $this->mTitle->userIsWatching() ) {
1714                                 $text = wfMsg( 'unwatchthispage' );
1715                                 $query = array( 'action' => 'unwatch' );
1716                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1717                         } else {
1718                                 $text = wfMsg( 'watchthispage' );
1719                                 $query = array( 'action' => 'watch' );
1720                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1721                         }
1722
1723                         $s = $this->link(
1724                                 $this->mTitle,
1725                                 $text,
1726                                 array( 'id' => $id ),
1727                                 $query,
1728                                 array( 'known', 'noclasses' )
1729                         );
1730                 } else {
1731                         $s = wfMsg( 'notanarticle' );
1732                 }
1733                 return $s;
1734         }
1735
1736         function moveThisPage() {
1737                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1738                         return $this->link(
1739                                 SpecialPage::getTitleFor( 'Movepage' ),
1740                                 wfMsg( 'movethispage' ),
1741                                 array(),
1742                                 array( 'target' => $this->mTitle->getPrefixedURL() ),
1743                                 array( 'known', 'noclasses' )
1744                         );
1745                 } else {
1746                         // no message if page is protected - would be redundant
1747                         return '';
1748                 }
1749         }
1750
1751         function historyLink() {
1752                 return $this->link(
1753                         $this->mTitle,
1754                         wfMsgHtml( 'history' ),
1755                         array( 'rel' => 'archives' ),
1756                         array( 'action' => 'history' )
1757                 );
1758         }
1759
1760         function whatLinksHere() {
1761                 return $this->link(
1762                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1763                         wfMsgHtml( 'whatlinkshere' ),
1764                         array(),
1765                         array(),
1766                         array( 'known', 'noclasses' )
1767                 );
1768         }
1769
1770         function userContribsLink() {
1771                 return $this->link(
1772                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1773                         wfMsgHtml( 'contributions' ),
1774                         array(),
1775                         array(),
1776                         array( 'known', 'noclasses' )
1777                 );
1778         }
1779
1780         function showEmailUser( $id ) {
1781                 global $wgUser;
1782                 $targetUser = User::newFromId( $id );
1783                 return  $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1784                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1785         }
1786
1787         function emailUserLink() {
1788                 return $this->link(
1789                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1790                         wfMsg( 'emailuser' ),
1791                         array(),
1792                         array(),
1793                         array( 'known', 'noclasses' )
1794                 );
1795         }
1796
1797         function watchPageLinksLink() {
1798                 global $wgOut;
1799                 if ( ! $wgOut->isArticleRelated() ) {
1800                         return '(' . wfMsg( 'notanarticle' ) . ')';
1801                 } else {
1802                         return $this->link(
1803                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1804                                 wfMsg( 'recentchangeslinked-toolbox' ),
1805                                 array(),
1806                                 array(),
1807                                 array( 'known', 'noclasses' )
1808                         );
1809                 }
1810         }
1811
1812         function trackbackLink() {
1813                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1814                         . wfMsg( 'trackbacklink' ) . '</a>';
1815         }
1816
1817         function otherLanguages() {
1818                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1819
1820                 if ( $wgHideInterlanguageLinks ) {
1821                         return '';
1822                 }
1823
1824                 $a = $wgOut->getLanguageLinks();
1825                 if ( 0 == count( $a ) ) {
1826                         return '';
1827                 }
1828
1829                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1830                 $first = true;
1831                 if( $wgContLang->isRTL() ) $s .= '<span dir="LTR">';
1832                 foreach( $a as $l ) {
1833                         if ( !$first ) {
1834                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1835                         }
1836                         $first = false;
1837
1838                         $nt = Title::newFromText( $l );
1839                         $url = $nt->escapeFullURL();
1840                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1841
1842                         if ( '' == $text ) { $text = $l; }
1843                         $style = $this->getExternalLinkAttributes( $l, $text );
1844                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1845                 }
1846                 if( $wgContLang->isRTL() ) $s .= '</span>';
1847                 return $s;
1848         }
1849
1850         function talkLink() {
1851                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1852                         # No discussion links for special pages
1853                         return '';
1854                 }
1855
1856                 $linkOptions = array();
1857
1858                 if( $this->mTitle->isTalkPage() ) {
1859                         $link = $this->mTitle->getSubjectPage();
1860                         switch( $link->getNamespace() ) {
1861                                 case NS_MAIN:
1862                                         $text = wfMsg( 'articlepage' );
1863                                         break;
1864                                 case NS_USER:
1865                                         $text = wfMsg( 'userpage' );
1866                                         break;
1867                                 case NS_PROJECT:
1868                                         $text = wfMsg( 'projectpage' );
1869                                         break;
1870                                 case NS_FILE:
1871                                         $text = wfMsg( 'imagepage' );
1872                                         # Make link known if image exists, even if the desc. page doesn't.
1873                                         if( wfFindFile( $link ) )
1874                                                 $linkOptions[] = 'known';
1875                                         break;
1876                                 case NS_MEDIAWIKI:
1877                                         $text = wfMsg( 'mediawikipage' );
1878                                         break;
1879                                 case NS_TEMPLATE:
1880                                         $text = wfMsg( 'templatepage' );
1881                                         break;
1882                                 case NS_HELP:
1883                                         $text = wfMsg( 'viewhelppage' );
1884                                         break;
1885                                 case NS_CATEGORY:
1886                                         $text = wfMsg( 'categorypage' );
1887                                         break;
1888                                 default:
1889                                         $text = wfMsg( 'articlepage' );
1890                         }
1891                 } else {
1892                         $link = $this->mTitle->getTalkPage();
1893                         $text = wfMsg( 'talkpage' );
1894                 }
1895
1896                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1897
1898                 return $s;
1899         }
1900
1901         function commentLink() {
1902                 global $wgOut;
1903
1904                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1905                         return '';
1906                 }
1907
1908                 # __NEWSECTIONLINK___ changes behaviour here
1909                 # If it is present, the link points to this page, otherwise
1910                 # it points to the talk page
1911                 if( $this->mTitle->isTalkPage() ) {
1912                         $title = $this->mTitle;
1913                 } elseif( $wgOut->showNewSectionLink() ) {
1914                         $title = $this->mTitle;
1915                 } else {
1916                         $title = $this->mTitle->getTalkPage();
1917                 }
1918
1919                 return $this->link(
1920                         $title,
1921                         wfMsg( 'postcomment' ),
1922                         array(),
1923                         array(
1924                                 'action' => 'edit',
1925                                 'section' => 'new'
1926                         ),
1927                         array( 'known', 'noclasses' )
1928                 );
1929         }
1930
1931         /* these are used extensively in SkinTemplate, but also some other places */
1932         static function makeMainPageUrl( $urlaction = '' ) {
1933                 $title = Title::newMainPage();
1934                 self::checkTitle( $title, '' );
1935                 return $title->getLocalURL( $urlaction );
1936         }
1937
1938         static function makeSpecialUrl( $name, $urlaction = '' ) {
1939                 $title = SpecialPage::getTitleFor( $name );
1940                 return $title->getLocalURL( $urlaction );
1941         }
1942
1943         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1944                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1945                 return $title->getLocalURL( $urlaction );
1946         }
1947
1948         static function makeI18nUrl( $name, $urlaction = '' ) {
1949                 $title = Title::newFromText( wfMsgForContent( $name ) );
1950                 self::checkTitle( $title, $name );
1951                 return $title->getLocalURL( $urlaction );
1952         }
1953
1954         static function makeUrl( $name, $urlaction = '' ) {
1955                 $title = Title::newFromText( $name );
1956                 self::checkTitle( $title, $name );
1957                 return $title->getLocalURL( $urlaction );
1958         }
1959
1960         # If url string starts with http, consider as external URL, else
1961         # internal
1962         static function makeInternalOrExternalUrl( $name ) {
1963                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1964                         return $name;
1965                 } else {
1966                         return self::makeUrl( $name );
1967                 }
1968         }
1969
1970         # this can be passed the NS number as defined in Language.php
1971         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1972                 $title = Title::makeTitleSafe( $namespace, $name );
1973                 self::checkTitle( $title, $name );
1974                 return $title->getLocalURL( $urlaction );
1975         }
1976
1977         /* these return an array with the 'href' and boolean 'exists' */
1978         static function makeUrlDetails( $name, $urlaction = '' ) {
1979                 $title = Title::newFromText( $name );
1980                 self::checkTitle( $title, $name );
1981                 return array(
1982                         'href' => $title->getLocalURL( $urlaction ),
1983                         'exists' => $title->getArticleID() != 0 ? true : false
1984                 );
1985         }
1986
1987         /**
1988          * Make URL details where the article exists (or at least it's convenient to think so)
1989          */
1990         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1991                 $title = Title::newFromText( $name );
1992                 self::checkTitle( $title, $name );
1993                 return array(
1994                         'href' => $title->getLocalURL( $urlaction ),
1995                         'exists' => true
1996                 );
1997         }
1998
1999         # make sure we have some title to operate on
2000         static function checkTitle( &$title, $name ) {
2001                 if( !is_object( $title ) ) {
2002                         $title = Title::newFromText( $name );
2003                         if( !is_object( $title ) ) {
2004                                 $title = Title::newFromText( '--error: link target missing--' );
2005                         }
2006                 }
2007         }
2008
2009         /**
2010          * Build an array that represents the sidebar(s), the navigation bar among them
2011          *
2012          * @return array
2013          */
2014         function buildSidebar() {
2015                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2016                 global $wgLang;
2017                 wfProfileIn( __METHOD__ );
2018
2019                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2020
2021                 if ( $wgEnableSidebarCache ) {
2022                         $cachedsidebar = $parserMemc->get( $key );
2023                         if ( $cachedsidebar ) {
2024                                 wfProfileOut( __METHOD__ );
2025                                 return $cachedsidebar;
2026                         }
2027                 }
2028
2029                 $bar = array();
2030                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
2031                 $heading = '';
2032                 foreach( $lines as $line ) {
2033                         if( strpos( $line, '*' ) !== 0 )
2034                                 continue;
2035                         if( strpos( $line, '**') !== 0 ) {
2036                                 $heading = trim( $line, '* ' );
2037                                 if( !array_key_exists( $heading, $bar ) ) $bar[$heading] = array();
2038                         } else {
2039                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2040                                         $line = array_map( 'trim', explode( '|', trim( $line, '* ' ), 2 ) );
2041                                         $link = wfMsgForContent( $line[0] );
2042                                         if( $link == '-' )
2043                                                 continue;
2044
2045                                         $text = wfMsgExt( $line[1], 'parsemag' );
2046                                         if( wfEmptyMsg( $line[1], $text ) )
2047                                                 $text = $line[1];
2048                                         if( wfEmptyMsg( $line[0], $link ) )
2049                                                 $link = $line[0];
2050
2051                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2052                                                 $href = $link;
2053                                         } else {
2054                                                 $title = Title::newFromText( $link );
2055                                                 if ( $title ) {
2056                                                         $title = $title->fixSpecialName();
2057                                                         $href = $title->getLocalURL();
2058                                                 } else {
2059                                                         $href = 'INVALID-TITLE';
2060                                                 }
2061                                         }
2062
2063                                         $bar[$heading][] = array(
2064                                                 'text' => $text,
2065                                                 'href' => $href,
2066                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2067                                                 'active' => false
2068                                         );
2069                                 } else { continue; }
2070                         }
2071                 }
2072                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2073                 if ( $wgEnableSidebarCache ) $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2074                 wfProfileOut( __METHOD__ );
2075                 return $bar;
2076         }
2077
2078         /**
2079          * Should we include common/wikiprintable.css?  Skins that have their own
2080          * print stylesheet should override this and return false.  (This is an
2081          * ugly hack to get Monobook to play nicely with
2082          * OutputPage::headElement().)
2083          *
2084          * @return bool
2085          */
2086         public function commonPrintStylesheet() {
2087                 return true;
2088         }
2089 }