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         function getHeadScripts( $allowUserJs ) {
 451                 global $wgStylePath, $wgUser, $wgJsMimeType, $wgStyleVersion;
 452
 453                 $vars = self::makeGlobalVariablesScript( array( 'skinname' => $this->getSkinName() ) );
 454
 455                 $r = array( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js?$wgStyleVersion\"></script>" );
 456                 global $wgUseSiteJs;
 457                 if( $wgUseSiteJs ) {
 458                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
 459                         $r[] = "<script type=\"$wgJsMimeType\" src=\"".
 460                                 htmlspecialchars( self::makeUrl( '-',
 461                                         "action=raw$jsCache&gen=js&useskin=" .
 462                                         urlencode( $this->getSkinName() ) ) ) .
 463                                 "\"><!-- site js --></script>";
 464                 }
 465                 if( $allowUserJs && $wgUser->isLoggedIn() ) {
 466                         $userpage = $wgUser->getUserPage();
 467                         $userjs = htmlspecialchars( self::makeUrl(
 468                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 469                                 'action=raw&ctype='.$wgJsMimeType ) );
 470                         $r[] = '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>";
 471                 }
 472                 return $vars . "\t\t" . implode ( "\n\t\t", $r );
 473         }
 474
 475         /**
 476          * To make it harder for someone to slip a user a fake
 477          * user-JavaScript or user-CSS preview, a random token
 478          * is associated with the login session. If it's not
 479          * passed back with the preview request, we won't render
 480          * the code.
 481          *
 482          * @param string $action
 483          * @return bool
 484          * @private
 485          */
 486         function userCanPreview( $action ) {
 487                 global $wgRequest, $wgUser;
 488
 489                 if( $action != 'submit' )
 490                         return false;
 491                 if( !$wgRequest->wasPosted() )
 492                         return false;
 493                 if( !$this->mTitle->userCanEditCssJsSubpage() )
 494                         return false;
 495                 return $wgUser->matchEditToken(
 496                         $wgRequest->getVal( 'wpEditToken' ) );
 497         }
 498
 499         /**
 500          * generated JavaScript action=raw&gen=js
 501          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 502          * nated together.  For some bizarre reason, it does *not* return any
 503          * custom user JS from subpages.  Huh?
 504          *
 505          * There's absolutely no reason to have separate Monobook/Common JSes.
 506          * Any JS that cares can just check the skin variable generated at the
 507          * top.  For now Monobook.js will be maintained, but it should be consi-
 508          * dered deprecated.
 509          *
 510          * @return string
 511          */
 512         public function generateUserJs() {
 513                 global $wgStylePath;
 514
 515                 wfProfileIn( __METHOD__ );
 516
 517                 $s = "/* generated javascript */\n";
 518                 $s .= "var skin = '" . Xml::escapeJsString( $this->getSkinName() ) . "';\n";
 519                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 520                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 521                 $commonJs = wfMsgForContent( 'common.js' );
 522                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 523                         $s .= $commonJs;
 524                 }
 525
 526                 $s .= "\n\n/* MediaWiki:".ucfirst( $this->getSkinName() ).".js */\n";
 527                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 528                 // by checking for default message content
 529                 $msgKey = ucfirst( $this->getSkinName() ).'.js';
 530                 $userJS = wfMsgForContent( $msgKey );
 531                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 532                         $s .= $userJS;
 533                 }
 534
 535                 wfProfileOut( __METHOD__ );
 536                 return $s;
 537         }
 538
 539         /**
 540          * Generate user stylesheet for action=raw&gen=css
 541          */
 542         public function generateUserStylesheet() {
 543                 wfProfileIn( __METHOD__ );
 544                 $s = "/* generated user stylesheet */\n" .
 545                         $this->reallyGenerateUserStylesheet();
 546                 wfProfileOut( __METHOD__ );
 547                 return $s;
 548         }
 549
 550         /**
 551          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 552          */
 553         protected function reallyGenerateUserStylesheet(){
 554                 global $wgUser;
 555                 $s = '';
 556                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 557                         $underline = $undopt ? 'underline' : 'none';
 558                         $s .= "a { text-decoration: $underline; }\n";
 559                 }
 560                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 561                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 562                 } else {
 563                         $s .= <<<END
 564 a.new, #quickbar a.new,
 565 a.stub, #quickbar a.stub {
 566         color: inherit;
 567 }
 568 a.new:after, #quickbar a.new:after {
 569         content: "?";
 570         color: #CC2200;
 571 }
 572 a.stub:after, #quickbar a.stub:after {
 573         content: "!";
 574         color: #772233;
 575 }
 576 END;
 577                 }
 578                 if( $wgUser->getOption( 'justify' ) ) {
 579                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 580                 }
 581                 if( !$wgUser->getOption( 'showtoc' ) ) {
 582                         $s .= "#toc { display: none; }\n";
 583                 }
 584                 if( !$wgUser->getOption( 'editsection' ) ) {
 585                         $s .= ".editsection { display: none; }\n";
 586                 }
 587                 return $s;
 588         }
 589
 590         /**
 591          * @private
 592          */
 593         function setupUserCss( OutputPage $out ) {
 594                 global $wgRequest, $wgContLang, $wgUser;
 595                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 596
 597                 wfProfileIn( __METHOD__ );
 598
 599                 $this->setupSkinUserCss( $out );
 600
 601                 $siteargs = array(
 602                         'action' => 'raw',
 603                         'maxage' => $wgSquidMaxage,
 604                 );
 605
 606                 // Add any extension CSS
 607                 foreach( $out->getExtStyle() as $tag ) {
 608                         $out->addStyle( $tag['href'] );
 609                 }
 610
 611                 // If we use the site's dynamic CSS, throw that in, too
 612                 // Per-site custom styles
 613                 if( $wgUseSiteCss ) {
 614                         global $wgHandheldStyle;
 615                         $query = wfArrayToCGI( array(
 616                                 'usemsgcache' => 'yes',
 617                                 'ctype' => 'text/css',
 618                                 'smaxage' => $wgSquidMaxage
 619                         ) + $siteargs );
 620                         # Site settings must override extension css! (bug 15025)
 621                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 622                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 623                         if( $wgHandheldStyle ) {
 624                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 625                         }
 626                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 627                 }
 628
 629                 if( $wgUser->isLoggedIn() ) {
 630                         // Ensure that logged-in users' generated CSS isn't clobbered
 631                         // by anons' publicly cacheable generated CSS.
 632                         $siteargs['smaxage'] = '0';
 633                         $siteargs['ts'] = $wgUser->mTouched;
 634                 }
 635                 // Per-user styles based on preferences
 636                 $siteargs['gen'] = 'css';
 637                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 638                         $siteargs['useskin'] = $us;
 639                 }
 640                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 641
 642                 // Per-user custom style pages
 643                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 644                         $action = $wgRequest->getVal( 'action' );
 645                         # If we're previewing the CSS page, use it
 646                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 647                                 $previewCss = $wgRequest->getText( 'wpTextbox1' );
 648                                 // @FIXME: properly escape the cdata!
 649                                 $this->usercss = "/*<![CDATA[*/\n" . $previewCss . "/*]]>*/";
 650                         } else {
 651                                 $out->addStyle( self::makeUrl( $this->userpage . '/' . $this->getSkinName() .'.css',
 652                                         'action=raw&ctype=text/css' ) );
 653                         }
 654                 }
 655
 656                 wfProfileOut( __METHOD__ );
 657         }
 658
 659         /**
 660          * Add skin specific stylesheets
 661          * @param $out OutputPage
 662          */
 663         function setupSkinUserCss( OutputPage $out ) {
 664                 $out->addStyle( 'common/shared.css' );
 665                 $out->addStyle( 'common/oldshared.css' );
 666                 $out->addStyle( $this->getStylesheet() );
 667                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 668         }
 669
 670         function getBodyOptions() {
 671                 global $wgUser, $wgOut, $wgRequest, $wgContLang;
 672
 673                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 674
 675                 if ( 0 != $this->mTitle->getNamespace() ) {
 676                         $a = array( 'bgcolor' => '#ffffec' );
 677                 }
 678                 else $a = array( 'bgcolor' => '#FFFFFF' );
 679                 if( $wgOut->isArticle() && $wgUser->getOption( 'editondblclick' ) &&
 680                   $this->mTitle->quickUserCan( 'edit' ) ) {
 681                         $s = $this->mTitle->getFullURL( $this->editUrlOptions() );
 682                         $s = 'document.location = "' .Xml::escapeJsString( $s ) .'";';
 683                         $a += array( 'ondblclick' => $s );
 684                 }
 685                 $a['onload'] = $wgOut->getOnloadHandler();
 686                 $a['class'] =
 687                         'mediawiki' .
 688                         ' '.( $wgContLang->isRTL() ? 'rtl' : 'ltr' ).
 689                         ' '.$this->getPageClasses( $this->mTitle ) .
 690                         ' skin-'. Sanitizer::escapeClass( $this->getSkinName() );
 691                 return $a;
 692         }
 693
 694         function getPageClasses( $title ) {
 695                 $numeric = 'ns-'.$title->getNamespace();
 696                 if( $title->getNamespace() == NS_SPECIAL ) {
 697                         $type = 'ns-special';
 698                 } elseif( $title->isTalkPage() ) {
 699                         $type = 'ns-talk';
 700                 } else {
 701                         $type = 'ns-subject';
 702                 }
 703                 $name = Sanitizer::escapeClass( 'page-'.$title->getPrefixedText() );
 704                 return "$numeric $type $name";
 705         }
 706
 707         /**
 708          * URL to the logo
 709          */
 710         function getLogo() {
 711                 global $wgLogo;
 712                 return $wgLogo;
 713         }
 714
 715         /**
 716          * This will be called immediately after the <body> tag.  Split into
 717          * two functions to make it easier to subclass.
 718          */
 719         function beforeContent() {
 720                 return $this->doBeforeContent();
 721         }
 722
 723         function doBeforeContent() {
 724                 global $wgContLang;
 725                 wfProfileIn( __METHOD__ );
 726
 727                 $s = '';
 728                 $qb = $this->qbSetting();
 729
 730                 if( $langlinks = $this->otherLanguages() ) {
 731                         $rows = 2;
 732                         $borderhack = '';
 733                 } else {
 734                         $rows = 1;
 735                         $langlinks = false;
 736                         $borderhack = 'class="top"';
 737                 }
 738
 739                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 740                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 741
 742                 $shove = ( $qb != 0 );
 743                 $left = ( $qb == 1 || $qb == 3 );
 744                 if( $wgContLang->isRTL() ) $left = !$left;
 745
 746                 if( !$shove ) {
 747                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 748                           $this->logoText() . '</td>';
 749                 } elseif( $left ) {
 750                         $s .= $this->getQuickbarCompensator( $rows );
 751                 }
 752                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 753                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 754
 755                 $s .= $this->topLinks();
 756                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 757
 758                 $r = $wgContLang->isRTL() ? 'left' : 'right';
 759                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 760                 $s .= $this->nameAndLogin();
 761                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 762
 763                 if ( $langlinks ) {
 764                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 765                 }
 766
 767                 if ( $shove && !$left ) { # Right
 768                         $s .= $this->getQuickbarCompensator( $rows );
 769                 }
 770                 $s .= "</tr>\n</table>\n</div>\n";
 771                 $s .= "\n<div id='article'>\n";
 772
 773                 $notice = wfGetSiteNotice();
 774                 if( $notice ) {
 775                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 776                 }
 777                 $s .= $this->pageTitle();
 778                 $s .= $this->pageSubtitle();
 779                 $s .= $this->getCategories();
 780                 wfProfileOut( __METHOD__ );
 781                 return $s;
 782         }
 783
 784
 785         function getCategoryLinks() {
 786                 global $wgOut, $wgUseCategoryBrowser;
 787                 global $wgContLang, $wgUser;
 788
 789                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 790
 791                 # Separator
 792                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 793
 794                 // Use Unicode bidi embedding override characters,
 795                 // to make sure links don't smash each other up in ugly ways.
 796                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 797                 $embed = "<span dir='$dir'>";
 798                 $pop = '</span>';
 799
 800                 $allCats = $wgOut->getCategoryLinks();
 801                 $s = '';
 802                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 803                 if ( !empty( $allCats['normal'] ) ) {
 804                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 805
 806                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 807                         $s .= '<div id="mw-normal-catlinks">' .
 808                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 809                                 . $colon . $t . '</div>';
 810                 }
 811
 812                 # Hidden categories
 813                 if ( isset( $allCats['hidden'] ) ) {
 814                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 815                                 $class ='mw-hidden-cats-user-shown';
 816                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 817                                 $class = 'mw-hidden-cats-ns-shown';
 818                         } else {
 819                                 $class = 'mw-hidden-cats-hidden';
 820                         }
 821                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 822                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 823                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 824                                 "</div>";
 825                 }
 826
 827                 # optional 'dmoz-like' category browser. Will be shown under the list
 828                 # of categories an article belong to
 829                 if( $wgUseCategoryBrowser ){
 830                         $s .= '<br /><hr />';
 831
 832                         # get a big array of the parents tree
 833                         $parenttree = $this->mTitle->getParentCategoryTree();
 834                         # Skin object passed by reference cause it can not be
 835                         # accessed under the method subfunction drawCategoryBrowser
 836                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 837                         # Clean out bogus first entry and sort them
 838                         unset( $tempout[0] );
 839                         asort( $tempout );
 840                         # Output one per line
 841                         $s .= implode( "<br />\n", $tempout );
 842                 }
 843
 844                 return $s;
 845         }
 846
 847         /**
 848          * Render the array as a serie of links.
 849          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 850          * @param &skin Object: skin passed by reference
 851          * @return String separated by &gt;, terminate with "\n"
 852          */
 853         function drawCategoryBrowser( $tree, &$skin ){
 854                 $return = '';
 855                 foreach( $tree as $element => $parent ) {
 856                         if( empty( $parent ) ) {
 857                                 # element start a new list
 858                                 $return .= "\n";
 859                         } else {
 860                                 # grab the others elements
 861                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 862                         }
 863                         # add our current element to the list
 864                         $eltitle = Title::newFromText( $element );
 865                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 866                 }
 867                 return $return;
 868         }
 869
 870         function getCategories() {
 871                 $catlinks=$this->getCategoryLinks();
 872
 873                 $classes = 'catlinks';
 874
 875                 if( strpos( $catlinks, '<div id="mw-normal-catlinks">' ) === false &&
 876                         strpos( $catlinks, '<div id="mw-hidden-catlinks" class="mw-hidden-cats-hidden">' ) !== false ) {
 877                         $classes .= ' catlinks-allhidden';
 878                 }
 879
 880                 if( !empty( $catlinks ) ){
 881                         return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 882                 }
 883         }
 884
 885         function getQuickbarCompensator( $rows = 1 ) {
 886                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 887         }
 888
 889         /**
 890          * This runs a hook to allow extensions placing their stuff after content
 891          * and article metadata (e.g. categories).
 892          * Note: This function has nothing to do with afterContent().
 893          *
 894          * This hook is placed here in order to allow using the same hook for all
 895          * skins, both the SkinTemplate based ones and the older ones, which directly
 896          * use this class to get their data.
 897          *
 898          * The output of this function gets processed in SkinTemplate::outputPage() for
 899          * the SkinTemplate based skins, all other skins should directly echo it.
 900          *
 901          * Returns an empty string by default, if not changed by any hook function.
 902          */
 903         protected function afterContentHook() {
 904                 $data = '';
 905
 906                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ){
 907                         // adding just some spaces shouldn't toggle the output
 908                         // of the whole <div/>, so we use trim() here
 909                         if( trim( $data ) != '' ){
 910                                 // Doing this here instead of in the skins to
 911                                 // ensure that the div has the same ID in all
 912                                 // skins
 913                                 $data = "<div id='mw-data-after-content'>\n" .
 914                                         "\t$data\n" .
 915                                         "</div>\n";
 916                         }
 917                 } else {
 918                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 919                 }
 920
 921                 return $data;
 922         }
 923
 924         /**
 925          * Generate debug data HTML for displaying at the bottom of the main content
 926          * area.
 927          * @return String HTML containing debug data, if enabled (otherwise empty).
 928          */
 929         protected function generateDebugHTML() {
 930                 global $wgShowDebug, $wgOut;
 931                 if ( $wgShowDebug ) {
 932                         $listInternals = str_replace( "\n", "</li>\n<li>", htmlspecialchars( $wgOut->mDebugtext ) );
 933                         return "\n<hr>\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\"><li>" .
 934                                 $listInternals . "</li></ul>\n";
 935                 }
 936                 return '';
 937         }
 938
 939         /**
 940          * This gets called shortly before the </body> tag.
 941          * @return String HTML to be put before </body>
 942          */
 943         function afterContent() {
 944                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 945                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 946         }
 947
 948         /**
 949          * This gets called shortly before the </body> tag.
 950          * @return String HTML-wrapped JS code to be put before </body>
 951          */
 952         function bottomScripts() {
 953                 global $wgJsMimeType;
 954                 $bottomScriptText = "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 955                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 956                 return $bottomScriptText;
 957         }
 958
 959         /** @return string Retrievied from HTML text */
 960         function printSource() {
 961                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 962                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 963         }
 964
 965         function printFooter() {
 966                 return "<p>" .  $this->printSource() .
 967                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 968         }
 969
 970         /** overloaded by derived classes */
 971         function doAfterContent() { return '</div></div>'; }
 972
 973         function pageTitleLinks() {
 974                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 975
 976                 $oldid = $wgRequest->getVal( 'oldid' );
 977                 $diff = $wgRequest->getVal( 'diff' );
 978                 $action = $wgRequest->getText( 'action' );
 979
 980                 $s[] = $this->printableLink();
 981                 $disclaimer = $this->disclaimerLink(); # may be empty
 982                 if( $disclaimer ) {
 983                         $s[] = $disclaimer;
 984                 }
 985                 $privacy = $this->privacyLink(); # may be empty too
 986                 if( $privacy ) {
 987                         $s[] = $privacy;
 988                 }
 989
 990                 if ( $wgOut->isArticleRelated() ) {
 991                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
 992                                 $name = $this->mTitle->getDBkey();
 993                                 $image = wfFindFile( $this->mTitle );
 994                                 if( $image ) {
 995                                         $link = htmlspecialchars( $image->getURL() );
 996                                         $style = $this->getInternalLinkAttributes( $link, $name );
 997                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 998                                 }
 999                         }
1000                 }
1001                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1002                         $s[] .= $this->link(
1003                                         $this->mTitle,
1004                                         wfMsg( 'currentrev' ),
1005                                         array(),
1006                                         array(),
1007                                         array( 'known', 'noclasses' )
1008                         );
1009                 }
1010
1011                 if ( $wgUser->getNewtalk() ) {
1012                         # do not show "You have new messages" text when we are viewing our
1013                         # own talk page
1014                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1015                                 $tl = $this->link(
1016                                         $wgUser->getTalkPage(),
1017                                         wfMsgHtml( 'newmessageslink' ),
1018                                         array(),
1019                                         array( 'redirect' => 'no' ),
1020                                         array( 'known', 'noclasses' )
1021                                 );
1022
1023                                 $dl = $this->link(
1024                                         $wgUser->getTalkPage(),
1025                                         wfMsgHtml( 'newmessagesdifflink' ),
1026                                         array(),
1027                                         array( 'diff' => 'cur' ),
1028                                         array( 'known', 'noclasses' )
1029                                 );
1030                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1031                                 # disable caching
1032                                 $wgOut->setSquidMaxage( 0 );
1033                                 $wgOut->enableClientCache( false );
1034                         }
1035                 }
1036
1037                 $undelete = $this->getUndeleteLink();
1038                 if( !empty( $undelete ) ) {
1039                         $s[] = $undelete;
1040                 }
1041                 return $wgLang->pipeList( $s );
1042         }
1043
1044         function getUndeleteLink() {
1045                 global $wgUser, $wgContLang, $wgLang, $wgRequest;
1046
1047                 $action = $wgRequest->getVal( 'action', 'view' );
1048
1049                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1050                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1051                         $n = $this->mTitle->isDeleted();
1052                         if ( $n ) {
1053                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1054                                         $msg = 'thisisdeleted';
1055                                 } else {
1056                                         $msg = 'viewdeleted';
1057                                 }
1058                                 return wfMsg(
1059                                         $msg,
1060                                         $this->link(
1061                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1062                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1063                                                 array(),
1064                                                 array(),
1065                                                 array( 'known', 'noclasses' )
1066                                         )
1067                                 );
1068                         }
1069                 }
1070                 return '';
1071         }
1072
1073         function printableLink() {
1074                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1075
1076                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1077
1078                 $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1079                 if( $wgOut->isSyndicated() ) {
1080                         foreach( $wgFeedClasses as $format => $class ) {
1081                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1082                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1083                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1084                         }
1085                 }
1086                 return $wgLang->pipeList( $s );
1087         }
1088
1089         function pageTitle() {
1090                 global $wgOut;
1091                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1092                 return $s;
1093         }
1094
1095         function pageSubtitle() {
1096                 global $wgOut;
1097
1098                 $sub = $wgOut->getSubtitle();
1099                 if ( '' == $sub ) {
1100                         global $wgExtraSubtitle;
1101                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1102                 }
1103                 $subpages = $this->subPageSubtitle();
1104                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1105                 $s = "<p class='subtitle'>{$sub}</p>\n";
1106                 return $s;
1107         }
1108
1109         function subPageSubtitle() {
1110                 $subpages = '';
1111                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) )
1112                         return $subpages;
1113
1114                 global $wgOut;
1115                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1116                         $ptext = $this->mTitle->getPrefixedText();
1117                         if( preg_match( '/\//', $ptext ) ) {
1118                                 $links = explode( '/', $ptext );
1119                                 array_pop( $links );
1120                                 $c = 0;
1121                                 $growinglink = '';
1122                                 $display = '';
1123                                 foreach( $links as $link ) {
1124                                         $growinglink .= $link;
1125                                         $display .= $link;
1126                                         $linkObj = Title::newFromText( $growinglink );
1127                                         if( is_object( $linkObj ) && $linkObj->exists() ){
1128                                                 $getlink = $this->link(
1129                                                         $linkObj,
1130                                                         htmlspecialchars( $display ),
1131                                                         array(),
1132                                                         array(),
1133                                                         array( 'known', 'noclasses' )
1134                                                 );
1135                                                 $c++;
1136                                                 if( $c > 1 ) {
1137                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1138                                                 } else  {
1139                                                         $subpages .= '&lt; ';
1140                                                 }
1141                                                 $subpages .= $getlink;
1142                                                 $display = '';
1143                                         } else {
1144                                                 $display .= '/';
1145                                         }
1146                                         $growinglink .= '/';
1147                                 }
1148                         }
1149                 }
1150                 return $subpages;
1151         }
1152
1153         /**
1154          * Returns true if the IP should be shown in the header
1155          */
1156         function showIPinHeader() {
1157                 global $wgShowIPinHeader;
1158                 return $wgShowIPinHeader && session_id() != '';
1159         }
1160
1161         function nameAndLogin() {
1162                 global $wgUser, $wgLang, $wgContLang;
1163
1164                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1165
1166                 $ret = '';
1167                 if ( $wgUser->isAnon() ) {
1168                         if( $this->showIPinHeader() ) {
1169                                 $name = wfGetIP();
1170
1171                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1172                                         $wgLang->getNsText( NS_TALK ) );
1173
1174                                 $ret .= "$name ($talkLink)";
1175                         } else {
1176                                 $ret .= wfMsg( 'notloggedin' );
1177                         }
1178
1179                         $returnTo = $this->mTitle->getPrefixedDBkey();
1180                         $query = array();
1181                         if ( $logoutPage != $returnTo ) {
1182                                 $query['returnto'] = $returnTo;
1183                         }
1184
1185                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1186                                 ? 'nav-login-createaccount'
1187                                 : 'login';
1188                         $ret .= "\n<br />" . $this->link(
1189                                 SpecialPage::getTitleFor( 'Userlogin' ),
1190                                 wfMsg( $loginlink ), array(), $query
1191                         );
1192                 } else {
1193                         $returnTo = $this->mTitle->getPrefixedDBkey();
1194                         $talkLink = $this->link( $wgUser->getTalkPage(),
1195                                 $wgLang->getNsText( NS_TALK ) );
1196
1197                         $ret .= $this->link( $wgUser->getUserPage(),
1198                                 htmlspecialchars( $wgUser->getName() ) );
1199                         $ret .= " ($talkLink)<br />";
1200                         $ret .= $wgLang->pipeList( array(
1201                                 $this->link(
1202                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1203                                         array(), array( 'returnto' => $returnTo )
1204                                 ),
1205                                 $this->specialLink( 'preferences' ),
1206                         ) );
1207                 }
1208                 $ret = $wgLang->pipeList( array(
1209                         $ret,
1210                         $this->link(
1211                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1212                                 wfMsg( 'help' )
1213                         ),
1214                 ) );
1215
1216                 return $ret;
1217         }
1218
1219         function getSearchLink() {
1220                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1221                 return $searchPage->getLocalURL();
1222         }
1223
1224         function escapeSearchLink() {
1225                 return htmlspecialchars( $this->getSearchLink() );
1226         }
1227
1228         function searchForm() {
1229                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1230                 $search = $wgRequest->getText( 'search' );
1231
1232                 $s = '<form id="searchform'.$this->searchboxes.'" name="search" class="inline" method="post" action="'
1233                   . $this->escapeSearchLink() . "\">\n"
1234                   . '<input type="text" id="searchInput'.$this->searchboxes.'" name="search" size="19" value="'
1235                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1236                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1237
1238                 if( $wgUseTwoButtonsSearchForm )
1239                         $s .= '&nbsp;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1240                 else
1241                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1242
1243                 $s .= '</form>';
1244
1245                 // Ensure unique id's for search boxes made after the first
1246                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1247
1248                 return $s;
1249         }
1250
1251         function topLinks() {
1252                 global $wgOut;
1253
1254                 $s = array(
1255                         $this->mainPageLink(),
1256                         $this->specialLink( 'recentchanges' )
1257                 );
1258
1259                 if ( $wgOut->isArticleRelated() ) {
1260                         $s[] = $this->editThisPage();
1261                         $s[] = $this->historyLink();
1262                 }
1263                 # Many people don't like this dropdown box
1264                 #$s[] = $this->specialPagesList();
1265
1266                 if( $this->variantLinks() ) {
1267                         $s[] = $this->variantLinks();
1268                 }
1269
1270                 if( $this->extensionTabLinks() ) {
1271                         $s[] = $this->extensionTabLinks();
1272                 }
1273
1274                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1275                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1276         }
1277
1278         /**
1279          * Compatibility for extensions adding functionality through tabs.
1280          * Eventually these old skins should be replaced with SkinTemplate-based
1281          * versions, sigh...
1282          * @return string
1283          */
1284         function extensionTabLinks() {
1285                 $tabs = array();
1286                 $out = '';
1287                 $s = array();
1288                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1289                 foreach( $tabs as $tab ) {
1290                         $s[] = Xml::element( 'a',
1291                                 array( 'href' => $tab['href'] ),
1292                                 $tab['text'] );
1293                 }
1294
1295                 if( count( $s ) ) {
1296                         global $wgLang;
1297
1298                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1299                         $out .= $wgLang->pipeList( $s );
1300                 }
1301
1302                 return $out;
1303         }
1304
1305         /**
1306          * Language/charset variant links for classic-style skins
1307          * @return string
1308          */
1309         function variantLinks() {
1310                 $s = '';
1311                 /* show links to different language variants */
1312                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1313                 $variants = $wgContLang->getVariants();
1314                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1315                         foreach( $variants as $code ) {
1316                                 $varname = $wgContLang->getVariantname( $code );
1317                                 if( $varname == 'disable' )
1318                                         continue;
1319                                 $s = $wgLang->pipeList( array(
1320                                         $s,
1321                                         '<a href="' . $this->mTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1322                                 ) );
1323                         }
1324                 }
1325                 return $s;
1326         }
1327
1328         function bottomLinks() {
1329                 global $wgOut, $wgUser, $wgUseTrackbacks;
1330                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1331
1332                 $s = '';
1333                 if ( $wgOut->isArticleRelated() ) {
1334                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1335                         if ( $wgUser->isLoggedIn() ) {
1336                                 $element[] = $this->watchThisPage();
1337                         }
1338                         $element[] = $this->talkLink();
1339                         $element[] = $this->historyLink();
1340                         $element[] = $this->whatLinksHere();
1341                         $element[] = $this->watchPageLinksLink();
1342
1343                         if( $wgUseTrackbacks )
1344                                 $element[] = $this->trackbackLink();
1345
1346                         if ( $this->mTitle->getNamespace() == NS_USER
1347                             || $this->mTitle->getNamespace() == NS_USER_TALK ){
1348                                 $id = User::idFromName( $this->mTitle->getText() );
1349                                 $ip = User::isIP( $this->mTitle->getText() );
1350
1351                                 if( $id || $ip ) { # both anons and non-anons have contri list
1352                                         $element[] = $this->userContribsLink();
1353                                 }
1354                                 if( $this->showEmailUser( $id ) ) {
1355                                         $element[] = $this->emailUserLink();
1356                                 }
1357                         }
1358
1359                         $s = implode( $element, $sep );
1360
1361                         if ( $this->mTitle->getArticleId() ) {
1362                                 $s .= "\n<br />";
1363                                 if( $wgUser->isAllowed( 'delete' ) ) { $s .= $this->deleteThisPage(); }
1364                                 if( $wgUser->isAllowed( 'protect' ) ) { $s .= $sep . $this->protectThisPage(); }
1365                                 if( $wgUser->isAllowed( 'move' ) ) { $s .= $sep . $this->moveThisPage(); }
1366                         }
1367                         $s .= "<br />\n" . $this->otherLanguages();
1368                 }
1369
1370                 return $s;
1371         }
1372
1373         function pageStats() {
1374                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1375                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1376
1377                 $oldid = $wgRequest->getVal( 'oldid' );
1378                 $diff = $wgRequest->getVal( 'diff' );
1379                 if ( ! $wgOut->isArticle() ) { return ''; }
1380                 if( !$wgArticle instanceOf Article ) { return ''; }
1381                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1382                 if ( 0 == $wgArticle->getID() ) { return ''; }
1383
1384                 $s = '';
1385                 if ( !$wgDisableCounters ) {
1386                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1387                         if ( $count ) {
1388                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1389                         }
1390                 }
1391
1392                 if( $wgMaxCredits != 0 ){
1393                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1394                 } else {
1395                         $s .= $this->lastModified();
1396                 }
1397
1398                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1399                         $dbr = wfGetDB( DB_SLAVE );
1400                         $res = $dbr->select( 'watchlist',
1401                                 array( 'COUNT(*) AS n' ),
1402                                 array( 'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ), 'wl_namespace' => $this->mTitle->getNamespace() ),
1403                                 __METHOD__
1404                         );
1405                         $x = $dbr->fetchObject( $res );
1406
1407                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1408                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1409                         );
1410                 }
1411
1412                 return $s . ' ' .  $this->getCopyright();
1413         }
1414
1415         function getCopyright( $type = 'detect' ) {
1416                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1417
1418                 if ( $type == 'detect' ) {
1419                         $diff = $wgRequest->getVal( 'diff' );
1420                         $isCur = $wgArticle && $wgArticle->isCurrent();
1421                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1422                                 $type = 'history';
1423                         } else {
1424                                 $type = 'normal';
1425                         }
1426                 }
1427
1428                 if ( $type == 'history' ) {
1429                         $msg = 'history_copyright';
1430                 } else {
1431                         $msg = 'copyright';
1432                 }
1433
1434                 $out = '';
1435                 if( $wgRightsPage ) {
1436                         $title = Title::newFromText( $wgRightsPage );
1437                         $link = $this->linkKnown( $title, $wgRightsText );
1438                 } elseif( $wgRightsUrl ) {
1439                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1440                 } elseif( $wgRightsText ) {
1441                         $link = $wgRightsText;
1442                 } else {
1443                         # Give up now
1444                         return $out;
1445                 }
1446                 // Allow for site and per-namespace customization of copyright notice.
1447                 wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link ) );
1448
1449                 $out .= wfMsgForContent( $msg, $link );
1450                 return $out;
1451         }
1452
1453         function getCopyrightIcon() {
1454                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1455                 $out = '';
1456                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1457                         $out = $wgCopyrightIcon;
1458                 } else if ( $wgRightsIcon ) {
1459                         $icon = htmlspecialchars( $wgRightsIcon );
1460                         if ( $wgRightsUrl ) {
1461                                 $url = htmlspecialchars( $wgRightsUrl );
1462                                 $out .= '<a href="'.$url.'">';
1463                         }
1464                         $text = htmlspecialchars( $wgRightsText );
1465                         $out .= "<img src=\"$icon\" alt='$text' />";
1466                         if ( $wgRightsUrl ) {
1467                                 $out .= '</a>';
1468                         }
1469                 }
1470                 return $out;
1471         }
1472
1473         function getPoweredBy() {
1474                 global $wgStylePath;
1475                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1476                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="Powered by MediaWiki" /></a>';
1477                 return $img;
1478         }
1479
1480         function lastModified() {
1481                 global $wgLang, $wgArticle;
1482                 if( $this->mRevisionId ) {
1483                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1484                 } else {
1485                         $timestamp = $wgArticle->getTimestamp();
1486                 }
1487                 if ( $timestamp ) {
1488                         $d = $wgLang->date( $timestamp, true );
1489                         $t = $wgLang->time( $timestamp, true );
1490                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1491                 } else {
1492                         $s = '';
1493                 }
1494                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1495                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1496                 }
1497                 return $s;
1498         }
1499
1500         function logoText( $align = '' ) {
1501                 if ( '' != $align ) {
1502                         $a = " align='{$align}'";
1503                 } else {
1504                         $a = '';
1505                 }
1506
1507                 $mp = wfMsg( 'mainpage' );
1508                 $mptitle = Title::newMainPage();
1509                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1510
1511                 $logourl = $this->getLogo();
1512                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1513                 return $s;
1514         }
1515
1516         /**
1517          * show a drop-down box of special pages
1518          */
1519         function specialPagesList() {
1520                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1521                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1522                 foreach ( $pages as $name => $page ) {
1523                         $pages[$name] = $page->getDescription();
1524                 }
1525
1526                 $go = wfMsg( 'go' );
1527                 $sp = wfMsg( 'specialpages' );
1528                 $spp = $wgContLang->specialPage( 'Specialpages' );
1529
1530                 $s = '<form id="specialpages" method="get" ' .
1531                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1532                 $s .= "<select name=\"wpDropdown\">\n";
1533                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1534
1535
1536                 foreach ( $pages as $name => $desc ) {
1537                         $p = $wgContLang->specialPage( $name );
1538                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1539                 }
1540                 $s .= "</select>\n";
1541                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1542                 $s .= "</form>\n";
1543                 return $s;
1544         }
1545
1546         function mainPageLink() {
1547                 $s = $this->link(
1548                         Title::newMainPage(),
1549                         wfMsg( 'mainpage' ),
1550                         array(),
1551                         array(),
1552                         array( 'known', 'noclasses' )
1553                 );
1554                 return $s;
1555         }
1556
1557         function copyrightLink() {
1558                 $title = Title::newFromText( wfMsgForContent( 'copyrightpage' ) );
1559                 $s = $this->linkKnown(
1560                         $title,
1561                         wfMsg( 'copyrightpagename' )
1562                 );
1563                 return $s;
1564         }
1565
1566         private function footerLink ( $desc, $page ) {
1567                 // if the link description has been set to "-" in the default language,
1568                 if ( wfMsgForContent( $desc )  == '-') {
1569                         // then it is disabled, for all languages.
1570                         return '';
1571                 } else {
1572                         // Otherwise, we display the link for the user, described in their
1573                         // language (which may or may not be the same as the default language),
1574                         // but we make the link target be the one site-wide page.
1575                         $title = Title::newFromText( wfMsgForContent( $page ) );
1576                         return $this->linkKnown(
1577                                 $title,
1578                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1579                         );
1580                 }
1581         }
1582
1583         function privacyLink() {
1584                 return $this->footerLink( 'privacy', 'privacypage' );
1585         }
1586
1587         function aboutLink() {
1588                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1589         }
1590
1591         function disclaimerLink() {
1592                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1593         }
1594
1595         function editThisPage() {
1596                 global $wgOut;
1597
1598                 if ( !$wgOut->isArticleRelated() ) {
1599                         $s = wfMsg( 'protectedpage' );
1600                 } else {
1601                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1602                                 $t = wfMsg( 'editthispage' );
1603                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1604                                 $t = wfMsg( 'create-this-page' );
1605                         } else {
1606                                 $t = wfMsg( 'viewsource' );
1607                         }
1608
1609                         $s = $this->link(
1610                                 $this->mTitle,
1611                                 $t,
1612                                 array(),
1613                                 $this->editUrlOptions(),
1614                                 array( 'known', 'noclasses' )
1615                         );
1616                 }
1617                 return $s;
1618         }
1619
1620         /**
1621          * Return URL options for the 'edit page' link.
1622          * This may include an 'oldid' specifier, if the current page view is such.
1623          *
1624          * @return array
1625          * @private
1626          */
1627         function editUrlOptions() {
1628                 global $wgArticle;
1629
1630                 $options = array( 'action' => 'edit' );
1631
1632                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1633                         $options['oldid'] = intval( $this->mRevisionId );
1634                 }
1635
1636                 return $options;
1637         }
1638
1639         function deleteThisPage() {
1640                 global $wgUser, $wgRequest;
1641
1642                 $diff = $wgRequest->getVal( 'diff' );
1643                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1644                         $t = wfMsg( 'deletethispage' );
1645
1646                         $s = $this->link(
1647                                 $this->mTitle,
1648                                 $t,
1649                                 array(),
1650                                 array( 'action' => 'delete' ),
1651                                 array( 'known', 'noclasses' )
1652                         );
1653                 } else {
1654                         $s = '';
1655                 }
1656                 return $s;
1657         }
1658
1659         function protectThisPage() {
1660                 global $wgUser, $wgRequest;
1661
1662                 $diff = $wgRequest->getVal( 'diff' );
1663                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1664                         if ( $this->mTitle->isProtected() ) {
1665                                 $text = wfMsg( 'unprotectthispage' );
1666                                 $query = array( 'action' => 'unprotect' );
1667                         } else {
1668                                 $text = wfMsg( 'protectthispage' );
1669                                 $query = array( 'action' => 'protect' );
1670                         }
1671
1672                         $s = $this->link(
1673                                 $this->mTitle,
1674                                 $text,
1675                                 array(),
1676                                 $query,
1677                                 array( 'known', 'noclasses' )
1678                         );
1679                 } else {
1680                         $s = '';
1681                 }
1682                 return $s;
1683         }
1684
1685         function watchThisPage() {
1686                 global $wgOut;
1687                 ++$this->mWatchLinkNum;
1688
1689                 if ( $wgOut->isArticleRelated() ) {
1690                         if ( $this->mTitle->userIsWatching() ) {
1691                                 $text = wfMsg( 'unwatchthispage' );
1692                                 $query = array( 'action' => 'unwatch' );
1693                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1694                         } else {
1695                                 $text = wfMsg( 'watchthispage' );
1696                                 $query = array( 'action' => 'watch' );
1697                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1698                         }
1699
1700                         $s = $this->link(
1701                                 $this->mTitle,
1702                                 $text,
1703                                 array( 'id' => $id ),
1704                                 $query,
1705                                 array( 'known', 'noclasses' )
1706                         );
1707                 } else {
1708                         $s = wfMsg( 'notanarticle' );
1709                 }
1710                 return $s;
1711         }
1712
1713         function moveThisPage() {
1714                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1715                         return $this->link(
1716                                 SpecialPage::getTitleFor( 'Movepage' ),
1717                                 wfMsg( 'movethispage' ),
1718                                 array(),
1719                                 array( 'target' => $this->mTitle->getPrefixedURL() ),
1720                                 array( 'known', 'noclasses' )
1721                         );
1722                 } else {
1723                         // no message if page is protected - would be redundant
1724                         return '';
1725                 }
1726         }
1727
1728         function historyLink() {
1729                 return $this->link(
1730                         $this->mTitle,
1731                         wfMsgHtml( 'history' ),
1732                         array( 'rel' => 'archives' ),
1733                         array( 'action' => 'history' )
1734                 );
1735         }
1736
1737         function whatLinksHere() {
1738                 return $this->link(
1739                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1740                         wfMsgHtml( 'whatlinkshere' ),
1741                         array(),
1742                         array(),
1743                         array( 'known', 'noclasses' )
1744                 );
1745         }
1746
1747         function userContribsLink() {
1748                 return $this->link(
1749                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1750                         wfMsgHtml( 'contributions' ),
1751                         array(),
1752                         array(),
1753                         array( 'known', 'noclasses' )
1754                 );
1755         }
1756
1757         function showEmailUser( $id ) {
1758                 global $wgUser;
1759                 $targetUser = User::newFromId( $id );
1760                 return  $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1761                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1762         }
1763
1764         function emailUserLink() {
1765                 return $this->link(
1766                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1767                         wfMsg( 'emailuser' ),
1768                         array(),
1769                         array(),
1770                         array( 'known', 'noclasses' )
1771                 );
1772         }
1773
1774         function watchPageLinksLink() {
1775                 global $wgOut;
1776                 if ( ! $wgOut->isArticleRelated() ) {
1777                         return '(' . wfMsg( 'notanarticle' ) . ')';
1778                 } else {
1779                         return $this->link(
1780                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1781                                 wfMsg( 'recentchangeslinked-toolbox' ),
1782                                 array(),
1783                                 array(),
1784                                 array( 'known', 'noclasses' )
1785                         );
1786                 }
1787         }
1788
1789         function trackbackLink() {
1790                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1791                         . wfMsg( 'trackbacklink' ) . '</a>';
1792         }
1793
1794         function otherLanguages() {
1795                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1796
1797                 if ( $wgHideInterlanguageLinks ) {
1798                         return '';
1799                 }
1800
1801                 $a = $wgOut->getLanguageLinks();
1802                 if ( 0 == count( $a ) ) {
1803                         return '';
1804                 }
1805
1806                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1807                 $first = true;
1808                 if( $wgContLang->isRTL() ) $s .= '<span dir="LTR">';
1809                 foreach( $a as $l ) {
1810                         if ( !$first ) {
1811                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1812                         }
1813                         $first = false;
1814
1815                         $nt = Title::newFromText( $l );
1816                         $url = $nt->escapeFullURL();
1817                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1818
1819                         if ( '' == $text ) { $text = $l; }
1820                         $style = $this->getExternalLinkAttributes( $l, $text );
1821                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1822                 }
1823                 if( $wgContLang->isRTL() ) $s .= '</span>';
1824                 return $s;
1825         }
1826
1827         function talkLink() {
1828                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1829                         # No discussion links for special pages
1830                         return '';
1831                 }
1832
1833                 $linkOptions = array();
1834
1835                 if( $this->mTitle->isTalkPage() ) {
1836                         $link = $this->mTitle->getSubjectPage();
1837                         switch( $link->getNamespace() ) {
1838                                 case NS_MAIN:
1839                                         $text = wfMsg( 'articlepage' );
1840                                         break;
1841                                 case NS_USER:
1842                                         $text = wfMsg( 'userpage' );
1843                                         break;
1844                                 case NS_PROJECT:
1845                                         $text = wfMsg( 'projectpage' );
1846                                         break;
1847                                 case NS_FILE:
1848                                         $text = wfMsg( 'imagepage' );
1849                                         # Make link known if image exists, even if the desc. page doesn't.
1850                                         if( wfFindFile( $link ) )
1851                                                 $linkOptions[] = 'known';
1852                                         break;
1853                                 case NS_MEDIAWIKI:
1854                                         $text = wfMsg( 'mediawikipage' );
1855                                         break;
1856                                 case NS_TEMPLATE:
1857                                         $text = wfMsg( 'templatepage' );
1858                                         break;
1859                                 case NS_HELP:
1860                                         $text = wfMsg( 'viewhelppage' );
1861                                         break;
1862                                 case NS_CATEGORY:
1863                                         $text = wfMsg( 'categorypage' );
1864                                         break;
1865                                 default:
1866                                         $text = wfMsg( 'articlepage' );
1867                         }
1868                 } else {
1869                         $link = $this->mTitle->getTalkPage();
1870                         $text = wfMsg( 'talkpage' );
1871                 }
1872
1873                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1874
1875                 return $s;
1876         }
1877
1878         function commentLink() {
1879                 global $wgOut;
1880
1881                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1882                         return '';
1883                 }
1884
1885                 # __NEWSECTIONLINK___ changes behaviour here
1886                 # If it is present, the link points to this page, otherwise
1887                 # it points to the talk page
1888                 if( $this->mTitle->isTalkPage() ) {
1889                         $title = $this->mTitle;
1890                 } elseif( $wgOut->showNewSectionLink() ) {
1891                         $title = $this->mTitle;
1892                 } else {
1893                         $title = $this->mTitle->getTalkPage();
1894                 }
1895
1896                 return $this->link(
1897                         $title,
1898                         wfMsg( 'postcomment' ),
1899                         array(),
1900                         array(
1901                                 'action' => 'edit',
1902                                 'section' => 'new'
1903                         ),
1904                         array( 'known', 'noclasses' )
1905                 );
1906         }
1907
1908         /* these are used extensively in SkinTemplate, but also some other places */
1909         static function makeMainPageUrl( $urlaction = '' ) {
1910                 $title = Title::newMainPage();
1911                 self::checkTitle( $title, '' );
1912                 return $title->getLocalURL( $urlaction );
1913         }
1914
1915         static function makeSpecialUrl( $name, $urlaction = '' ) {
1916                 $title = SpecialPage::getTitleFor( $name );
1917                 return $title->getLocalURL( $urlaction );
1918         }
1919
1920         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1921                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1922                 return $title->getLocalURL( $urlaction );
1923         }
1924
1925         static function makeI18nUrl( $name, $urlaction = '' ) {
1926                 $title = Title::newFromText( wfMsgForContent( $name ) );
1927                 self::checkTitle( $title, $name );
1928                 return $title->getLocalURL( $urlaction );
1929         }
1930
1931         static function makeUrl( $name, $urlaction = '' ) {
1932                 $title = Title::newFromText( $name );
1933                 self::checkTitle( $title, $name );
1934                 return $title->getLocalURL( $urlaction );
1935         }
1936
1937         # If url string starts with http, consider as external URL, else
1938         # internal
1939         static function makeInternalOrExternalUrl( $name ) {
1940                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1941                         return $name;
1942                 } else {
1943                         return self::makeUrl( $name );
1944                 }
1945         }
1946
1947         # this can be passed the NS number as defined in Language.php
1948         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1949                 $title = Title::makeTitleSafe( $namespace, $name );
1950                 self::checkTitle( $title, $name );
1951                 return $title->getLocalURL( $urlaction );
1952         }
1953
1954         /* these return an array with the 'href' and boolean 'exists' */
1955         static function makeUrlDetails( $name, $urlaction = '' ) {
1956                 $title = Title::newFromText( $name );
1957                 self::checkTitle( $title, $name );
1958                 return array(
1959                         'href' => $title->getLocalURL( $urlaction ),
1960                         'exists' => $title->getArticleID() != 0 ? true : false
1961                 );
1962         }
1963
1964         /**
1965          * Make URL details where the article exists (or at least it's convenient to think so)
1966          */
1967         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1968                 $title = Title::newFromText( $name );
1969                 self::checkTitle( $title, $name );
1970                 return array(
1971                         'href' => $title->getLocalURL( $urlaction ),
1972                         'exists' => true
1973                 );
1974         }
1975
1976         # make sure we have some title to operate on
1977         static function checkTitle( &$title, $name ) {
1978                 if( !is_object( $title ) ) {
1979                         $title = Title::newFromText( $name );
1980                         if( !is_object( $title ) ) {
1981                                 $title = Title::newFromText( '--error: link target missing--' );
1982                         }
1983                 }
1984         }
1985
1986         /**
1987          * Build an array that represents the sidebar(s), the navigation bar among them
1988          *
1989          * @return array
1990          */
1991         function buildSidebar() {
1992                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1993                 global $wgLang;
1994                 wfProfileIn( __METHOD__ );
1995
1996                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
1997
1998                 if ( $wgEnableSidebarCache ) {
1999                         $cachedsidebar = $parserMemc->get( $key );
2000                         if ( $cachedsidebar ) {
2001                                 wfProfileOut( __METHOD__ );
2002                                 return $cachedsidebar;
2003                         }
2004                 }
2005
2006                 $bar = array();
2007                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
2008                 $heading = '';
2009                 foreach( $lines as $line ) {
2010                         if( strpos( $line, '*' ) !== 0 )
2011                                 continue;
2012                         if( strpos( $line, '**') !== 0 ) {
2013                                 $heading = trim( $line, '* ' );
2014                                 if( !array_key_exists( $heading, $bar ) ) $bar[$heading] = array();
2015                         } else {
2016                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2017                                         $line = array_map( 'trim', explode( '|', trim( $line, '* ' ), 2 ) );
2018                                         $link = wfMsgForContent( $line[0] );
2019                                         if( $link == '-' )
2020                                                 continue;
2021
2022                                         $text = wfMsgExt( $line[1], 'parsemag' );
2023                                         if( wfEmptyMsg( $line[1], $text ) )
2024                                                 $text = $line[1];
2025                                         if( wfEmptyMsg( $line[0], $link ) )
2026                                                 $link = $line[0];
2027
2028                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2029                                                 $href = $link;
2030                                         } else {
2031                                                 $title = Title::newFromText( $link );
2032                                                 if ( $title ) {
2033                                                         $title = $title->fixSpecialName();
2034                                                         $href = $title->getLocalURL();
2035                                                 } else {
2036                                                         $href = 'INVALID-TITLE';
2037                                                 }
2038                                         }
2039
2040                                         $bar[$heading][] = array(
2041                                                 'text' => $text,
2042                                                 'href' => $href,
2043                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2044                                                 'active' => false
2045                                         );
2046                                 } else { continue; }
2047                         }
2048                 }
2049                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2050                 if ( $wgEnableSidebarCache ) $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2051                 wfProfileOut( __METHOD__ );
2052                 return $bar;
2053         }
2054 }