includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( ! defined( 'MEDIAWIKI' ) )
   7         die( 1 );
   8
   9 /**
  10  * The main skin class that provide methods and properties for all other skins.
  11  * This base class is also the "Standard" skin.
  12  *
  13  * See docs/skin.txt for more information.
  14  *
  15  * @ingroup Skins
  16  */
  17 class Skin extends Linker {
  18         /**#@+
  19          * @private
  20          */
  21         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  22         // How many search boxes have we made?  Avoid duplicate id's.
  23         protected $searchboxes = '';
  24         /**#@-*/
  25         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  26         protected $skinname = 'standard';
  27
  28         /** Constructor, call parent constructor */
  29         function Skin() { parent::__construct(); }
  30
  31         /**
  32          * Fetch the set of available skins.
  33          * @return array of strings
  34          * @static
  35          */
  36         static function getSkinNames() {
  37                 global $wgValidSkinNames;
  38                 static $skinsInitialised = false;
  39                 if ( !$skinsInitialised ) {
  40                         # Get a list of available skins
  41                         # Build using the regular expression '^(.*).php$'
  42                         # Array keys are all lower case, array value keep the case used by filename
  43                         #
  44                         wfProfileIn( __METHOD__ . '-init' );
  45                         global $wgStyleDirectory;
  46                         $skinDir = dir( $wgStyleDirectory );
  47
  48                         # while code from www.php.net
  49                         while( false !== ( $file = $skinDir->read() ) ) {
  50                                 // Skip non-PHP files, hidden files, and '.dep' includes
  51                                 $matches = array();
  52                                 if( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  53                                         $aSkin = $matches[1];
  54                                         $wgValidSkinNames[strtolower($aSkin)] = $aSkin;
  55                                 }
  56                         }
  57                         $skinDir->close();
  58                         $skinsInitialised = true;
  59                         wfProfileOut( __METHOD__ . '-init' );
  60                 }
  61                 return $wgValidSkinNames;
  62         }
  63
  64         /**
  65          * Fetch the list of usable skins in regards to $wgSkipSkins.
  66          * Useful for Special:Preferences and other places where you
  67          * only want to show skins users _can_ use.
  68          * @return array of strings
  69          */
  70         public static function getUsableSkins() {
  71                 global $wgSkipSkins;
  72                 $usableSkins = self::getSkinNames();
  73                 foreach ( $wgSkipSkins as $skip ) {
  74                         unset( $usableSkins[$skip] );
  75                 }
  76                 return $usableSkins;
  77         }
  78
  79         /**
  80          * Normalize a skin preference value to a form that can be loaded.
  81          * If a skin can't be found, it will fall back to the configured
  82          * default (or the old 'Classic' skin if that's broken).
  83          * @param string $key
  84          * @return string
  85          * @static
  86          */
  87         static function normalizeKey( $key ) {
  88                 global $wgDefaultSkin;
  89                 $skinNames = Skin::getSkinNames();
  90
  91                 if( $key == '' ) {
  92                         // Don't return the default immediately;
  93                         // in a misconfiguration we need to fall back.
  94                         $key = $wgDefaultSkin;
  95                 }
  96
  97                 if( isset( $skinNames[$key] ) ) {
  98                         return $key;
  99                 }
 100
 101                 // Older versions of the software used a numeric setting
 102                 // in the user preferences.
 103                 $fallback = array(
 104                         0 => $wgDefaultSkin,
 105                         1 => 'nostalgia',
 106                         2 => 'cologneblue' );
 107
 108                 if( isset( $fallback[$key] ) ){
 109                         $key = $fallback[$key];
 110                 }
 111
 112                 if( isset( $skinNames[$key] ) ) {
 113                         return $key;
 114                 } else {
 115                         return 'monobook';
 116                 }
 117         }
 118
 119         /**
 120          * Factory method for loading a skin of a given type
 121          * @param string $key 'monobook', 'standard', etc
 122          * @return Skin
 123          * @static
 124          */
 125         static function &newFromKey( $key ) {
 126                 global $wgStyleDirectory;
 127
 128                 $key = Skin::normalizeKey( $key );
 129
 130                 $skinNames = Skin::getSkinNames();
 131                 $skinName = $skinNames[$key];
 132                 $className = 'Skin'.ucfirst($key);
 133
 134                 # Grab the skin class and initialise it.
 135                 if ( !class_exists( $className ) ) {
 136                         // Preload base classes to work around APC/PHP5 bug
 137                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 138                         if( file_exists( $deps ) ) include_once( $deps );
 139                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 140
 141                         # Check if we got if not failback to default skin
 142                         if( !class_exists( $className ) ) {
 143                                 # DO NOT die if the class isn't found. This breaks maintenance
 144                                 # scripts and can cause a user account to be unrecoverable
 145                                 # except by SQL manipulation if a previously valid skin name
 146                                 # is no longer valid.
 147                                 wfDebug( "Skin class does not exist: $className\n" );
 148                                 $className = 'SkinMonobook';
 149                                 require_once( "{$wgStyleDirectory}/MonoBook.php" );
 150                         }
 151                 }
 152                 $skin = new $className;
 153                 return $skin;
 154         }
 155
 156         /** @return string path to the skin stylesheet */
 157         function getStylesheet() {
 158                 return 'common/wikistandard.css';
 159         }
 160
 161         /** @return string skin name */
 162         public function getSkinName() {
 163                 return $this->skinname;
 164         }
 165
 166         function qbSetting() {
 167                 global $wgOut, $wgUser;
 168
 169                 if ( $wgOut->isQuickbarSuppressed() ) { return 0; }
 170                 $q = $wgUser->getOption( 'quickbar', 0 );
 171                 return $q;
 172         }
 173
 174         function initPage( OutputPage $out ) {
 175                 global $wgFavicon, $wgAppleTouchIcon;
 176
 177                 wfProfileIn( __METHOD__ );
 178
 179                 # Generally the order of the favicon and apple-touch-icon links
 180                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 181                 # uses whichever one appears later in the HTML source.  Make sure
 182                 # apple-touch-icon is specified first to avoid this.
 183                 if( false !== $wgAppleTouchIcon ) {
 184                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 185                 }
 186
 187                 if( false !== $wgFavicon ) {
 188                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 189                 }
 190
 191                 # OpenSearch description link
 192                 $out->addLink( array(
 193                         'rel' => 'search',
 194                         'type' => 'application/opensearchdescription+xml',
 195                         'href' => wfScript( 'opensearch_desc' ),
 196                         'title' => wfMsgForContent( 'opensearch-desc' ),
 197                 ));
 198
 199                 $this->addMetadataLinks( $out );
 200
 201                 $this->mRevisionId = $out->mRevisionId;
 202
 203                 $this->preloadExistence();
 204
 205                 wfProfileOut( __METHOD__ );
 206         }
 207
 208         /**
 209          * Preload the existence of three commonly-requested pages in a single query
 210          */
 211         function preloadExistence() {
 212                 global $wgUser, $wgTitle;
 213
 214                 // User/talk link
 215                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 216
 217                 // Other tab link
 218                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
 219                         // nothing
 220                 } elseif ( $wgTitle->isTalkPage() ) {
 221                         $titles[] = $wgTitle->getSubjectPage();
 222                 } else {
 223                         $titles[] = $wgTitle->getTalkPage();
 224                 }
 225
 226                 $lb = new LinkBatch( $titles );
 227                 $lb->execute();
 228         }
 229
 230         function addMetadataLinks( OutputPage $out ) {
 231                 global $wgTitle, $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 232                 global $wgRightsPage, $wgRightsUrl;
 233
 234                 if( $out->isArticleRelated() ) {
 235                         # note: buggy CC software only reads first "meta" link
 236                         if( $wgEnableCreativeCommonsRdf ) {
 237                                 $out->addMetadataLink( array(
 238                                         'title' => 'Creative Commons',
 239                                         'type' => 'application/rdf+xml',
 240                                         'href' => $wgTitle->getLocalURL( 'action=creativecommons' ) )
 241                                 );
 242                         }
 243                         if( $wgEnableDublinCoreRdf ) {
 244                                 $out->addMetadataLink( array(
 245                                         'title' => 'Dublin Core',
 246                                         'type' => 'application/rdf+xml',
 247                                         'href' => $wgTitle->getLocalURL( 'action=dublincore' ) )
 248                                 );
 249                         }
 250                 }
 251                 $copyright = '';
 252                 if( $wgRightsPage ) {
 253                         $copy = Title::newFromText( $wgRightsPage );
 254                         if( $copy ) {
 255                                 $copyright = $copy->getLocalURL();
 256                         }
 257                 }
 258                 if( !$copyright && $wgRightsUrl ) {
 259                         $copyright = $wgRightsUrl;
 260                 }
 261                 if( $copyright ) {
 262                         $out->addLink( array(
 263                                 'rel' => 'copyright',
 264                                 'href' => $copyright )
 265                         );
 266                 }
 267         }
 268
 269         function setMembers(){
 270                 global $wgTitle, $wgUser;
 271                 $this->mTitle = $wgTitle;
 272                 $this->mUser = $wgUser;
 273                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 274                 $this->usercss = false;
 275         }
 276
 277         function outputPage( OutputPage $out ) {
 278                 global $wgDebugComments;
 279                 wfProfileIn( __METHOD__ );
 280
 281                 $this->setMembers();
 282                 $this->initPage( $out );
 283
 284                 // See self::afterContentHook() for documentation
 285                 $afterContent = $this->afterContentHook();
 286
 287                 $out->out( $out->headElement( $this ) );
 288
 289                 $out->out( "\n<body" );
 290                 $ops = $this->getBodyOptions();
 291                 foreach ( $ops as $name => $val ) {
 292                         $out->out( " $name='$val'" );
 293                 }
 294                 $out->out( ">\n" );
 295                 if ( $wgDebugComments ) {
 296                         $out->out( "<!-- Wiki debugging output:\n" .
 297                           $out->mDebugtext . "-->\n" );
 298                 }
 299
 300                 $out->out( $this->beforeContent() );
 301
 302                 $out->out( $out->mBodytext . "\n" );
 303
 304                 $out->out( $this->afterContent() );
 305
 306                 $out->out( $afterContent );
 307
 308                 $out->out( $this->bottomScripts() );
 309
 310                 $out->out( wfReportTime() );
 311
 312                 $out->out( "\n</body></html>" );
 313                 wfProfileOut( __METHOD__ );
 314         }
 315
 316         static function makeVariablesScript( $data ) {
 317                 global $wgJsMimeType;
 318
 319                 $r = array( "<script type=\"$wgJsMimeType\">/*<![CDATA[*/" );
 320                 foreach ( $data as $name => $value ) {
 321                         $encValue = Xml::encodeJsVar( $value );
 322                         $r[] = "var $name = $encValue;";
 323                 }
 324                 $r[] = "/*]]>*/</script>\n";
 325
 326                 return implode( "\n\t\t", $r );
 327         }
 328
 329         /**
 330          * Make a <script> tag containing global variables
 331          * @param array $data Associative array containing one element:
 332          *     skinname => the skin name
 333          * The odd calling convention is for backwards compatibility
 334          */
 335         static function makeGlobalVariablesScript( $data ) {
 336                 global $wgScript, $wgStylePath, $wgUser;
 337                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 338                 global $wgTitle, $wgCanonicalNamespaceNames, $wgOut, $wgArticle;
 339                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 340                 global $wgUseAjax, $wgAjaxWatch;
 341                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 342                 global $wgRestrictionTypes, $wgLivePreview;
 343                 global $wgMWSuggestTemplate, $wgDBname, $wgEnableMWSuggest;
 344
 345                 $ns = $wgTitle->getNamespace();
 346                 $nsname = isset( $wgCanonicalNamespaceNames[ $ns ] ) ? $wgCanonicalNamespaceNames[ $ns ] : $wgTitle->getNsText();
 347                 $separatorTransTable = $wgContLang->separatorTransformTable();
 348                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
 349                 $compactSeparatorTransTable = array(
 350                         implode( "\t", array_keys( $separatorTransTable ) ),
 351                         implode( "\t", $separatorTransTable ),
 352                 );
 353                 $digitTransTable = $wgContLang->digitTransformTable();
 354                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
 355                 $compactDigitTransTable = array(
 356                         implode( "\t", array_keys( $digitTransTable ) ),
 357                         implode( "\t", $digitTransTable ),
 358                 );
 359
 360                 $vars = array(
 361                         'skin' => $data['skinname'],
 362                         'stylepath' => $wgStylePath,
 363                         'wgArticlePath' => $wgArticlePath,
 364                         'wgScriptPath' => $wgScriptPath,
 365                         'wgScript' => $wgScript,
 366                         'wgVariantArticlePath' => $wgVariantArticlePath,
 367                         'wgActionPaths' => (object)$wgActionPaths,
 368                         'wgServer' => $wgServer,
 369                         'wgCanonicalNamespace' => $nsname,
 370                         'wgCanonicalSpecialPageName' => SpecialPage::resolveAlias( $wgTitle->getDBkey() ),
 371                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 372                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 373                         'wgTitle' => $wgTitle->getText(),
 374                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 375                         'wgArticleId' => $wgTitle->getArticleId(),
 376                         'wgIsArticle' => $wgOut->isArticle(),
 377                         'wgUserName' => $wgUser->isAnon() ? NULL : $wgUser->getName(),
 378                         'wgUserGroups' => $wgUser->isAnon() ? NULL : $wgUser->getEffectiveGroups(),
 379                         'wgUserLanguage' => $wgLang->getCode(),
 380                         'wgContentLanguage' => $wgContLang->getCode(),
 381                         'wgBreakFrames' => $wgBreakFrames,
 382                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 383                         'wgVersion' => $wgVersion,
 384                         'wgEnableAPI' => $wgEnableAPI,
 385                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 386                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
 387                         'wgDigitTransformTable' => $compactDigitTransTable,
 388                 );
 389
 390                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
 391                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 392                         $vars['wgDBname'] = $wgDBname;
 393                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 394                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 395                 }
 396
 397                 foreach( $wgRestrictionTypes as $type )
 398                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 399
 400                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
 401                         $vars['wgLivepreviewMessageLoading'] = wfMsg( 'livepreview-loading' );
 402                         $vars['wgLivepreviewMessageReady']   = wfMsg( 'livepreview-ready' );
 403                         $vars['wgLivepreviewMessageFailed']  = wfMsg( 'livepreview-failed' );
 404                         $vars['wgLivepreviewMessageError']   = wfMsg( 'livepreview-error' );
 405                 }
 406
 407                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 408                         $msgs = (object)array();
 409                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching' ) as $msgName ) {
 410                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 411                         }
 412                         $vars['wgAjaxWatch'] = $msgs;
 413                 }
 414
 415                 // Allow extensions to add their custom variables to the global JS variables
 416                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 417
 418                 return self::makeVariablesScript( $vars );
 419         }
 420
 421         function getHeadScripts( $allowUserJs ) {
 422                 global $wgStylePath, $wgUser, $wgJsMimeType, $wgStyleVersion;
 423
 424                 $vars = self::makeGlobalVariablesScript( array( 'skinname' => $this->getSkinName() ) );
 425
 426                 $r = array( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js?$wgStyleVersion\"></script>" );
 427                 global $wgUseSiteJs;
 428                 if( $wgUseSiteJs ) {
 429                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
 430                         $r[] = "<script type=\"$wgJsMimeType\" src=\"".
 431                                 htmlspecialchars( self::makeUrl( '-',
 432                                         "action=raw$jsCache&gen=js&useskin=" .
 433                                         urlencode( $this->getSkinName() ) ) ) .
 434                                 "\"><!-- site js --></script>";
 435                 }
 436                 if( $allowUserJs && $wgUser->isLoggedIn() ) {
 437                         $userpage = $wgUser->getUserPage();
 438                         $userjs = htmlspecialchars( self::makeUrl(
 439                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 440                                 'action=raw&ctype='.$wgJsMimeType ) );
 441                         $r[] = '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>";
 442                 }
 443                 return $vars . "\t\t" . implode ( "\n\t\t", $r );
 444         }
 445
 446         /**
 447          * To make it harder for someone to slip a user a fake
 448          * user-JavaScript or user-CSS preview, a random token
 449          * is associated with the login session. If it's not
 450          * passed back with the preview request, we won't render
 451          * the code.
 452          *
 453          * @param string $action
 454          * @return bool
 455          * @private
 456          */
 457         function userCanPreview( $action ) {
 458                 global $wgTitle, $wgRequest, $wgUser;
 459
 460                 if( $action != 'submit' )
 461                         return false;
 462                 if( !$wgRequest->wasPosted() )
 463                         return false;
 464                 if( !$wgTitle->userCanEditCssJsSubpage() )
 465                         return false;
 466                 return $wgUser->matchEditToken(
 467                         $wgRequest->getVal( 'wpEditToken' ) );
 468         }
 469
 470         /**
 471          * generated JavaScript action=raw&gen=js
 472          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 473          * nated together.  For some bizarre reason, it does *not* return any
 474          * custom user JS from subpages.  Huh?
 475          *
 476          * There's absolutely no reason to have separate Monobook/Common JSes.
 477          * Any JS that cares can just check the skin variable generated at the
 478          * top.  For now Monobook.js will be maintained, but it should be consi-
 479          * dered deprecated.
 480          *
 481          * @return string
 482          */
 483         public function generateUserJs() {
 484                 global $wgStylePath;
 485
 486                 wfProfileIn( __METHOD__ );
 487
 488                 $s = "/* generated javascript */\n";
 489                 $s .= "var skin = '" . Xml::escapeJsString( $this->getSkinName() ) . "';\n";
 490                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 491                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 492                 $commonJs = wfMsgForContent( 'common.js' );
 493                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 494                         $s .= $commonJs;
 495                 }
 496
 497                 $s .= "\n\n/* MediaWiki:".ucfirst( $this->getSkinName() ).".js */\n";
 498                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 499                 // by checking for default message content
 500                 $msgKey = ucfirst( $this->getSkinName() ).'.js';
 501                 $userJS = wfMsgForContent( $msgKey );
 502                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 503                         $s .= $userJS;
 504                 }
 505
 506                 wfProfileOut( __METHOD__ );
 507                 return $s;
 508         }
 509
 510         /**
 511          * Generate user stylesheet for action=raw&gen=css
 512          */
 513         public function generateUserStylesheet() {
 514                 wfProfileIn( __METHOD__ );
 515                 $s = "/* generated user stylesheet */\n" .
 516                         $this->reallyGenerateUserStylesheet();
 517                 wfProfileOut( __METHOD__ );
 518                 return $s;
 519         }
 520
 521         /**
 522          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 523          */
 524         protected function reallyGenerateUserStylesheet(){
 525                 global $wgUser;
 526                 $s = '';
 527                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 528                         $underline = $undopt ? 'underline' : 'none';
 529                         $s .= "a { text-decoration: $underline; }\n";
 530                 }
 531                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 532                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 533                 } else {
 534                         $s .= <<<END
 535 a.new, #quickbar a.new,
 536 a.stub, #quickbar a.stub {
 537         color: inherit;
 538 }
 539 a.new:after, #quickbar a.new:after {
 540         content: "?";
 541         color: #CC2200;
 542 }
 543 a.stub:after, #quickbar a.stub:after {
 544         content: "!";
 545         color: #772233;
 546 }
 547 END;
 548                 }
 549                 if( $wgUser->getOption( 'justify' ) ) {
 550                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 551                 }
 552                 if( !$wgUser->getOption( 'showtoc' ) ) {
 553                         $s .= "#toc { display: none; }\n";
 554                 }
 555                 if( !$wgUser->getOption( 'editsection' ) ) {
 556                         $s .= ".editsection { display: none; }\n";
 557                 }
 558                 return $s;
 559         }
 560
 561         /**
 562          * @private
 563          */
 564         function setupUserCss( OutputPage $out ) {
 565                 global $wgRequest, $wgContLang, $wgUser;
 566                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 567
 568                 wfProfileIn( __METHOD__ );
 569
 570                 $this->setupSkinUserCss( $out );
 571
 572                 $siteargs = array(
 573                         'action' => 'raw',
 574                         'maxage' => $wgSquidMaxage,
 575                 );
 576
 577                 // Add any extension CSS
 578                 foreach( $out->getExtStyle() as $tag ) {
 579                         $out->addStyle( $tag['href'] );
 580                 }
 581
 582                 // If we use the site's dynamic CSS, throw that in, too
 583                 // Per-site custom styles
 584                 if( $wgUseSiteCss ) {
 585                         global $wgHandheldStyle;
 586                         $query = wfArrayToCGI( array(
 587                                 'usemsgcache' => 'yes',
 588                                 'ctype' => 'text/css',
 589                                 'smaxage' => $wgSquidMaxage
 590                         ) + $siteargs );
 591                         # Site settings must override extension css! (bug 15025)
 592                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 593                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 594                         if( $wgHandheldStyle ) {
 595                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 596                         }
 597                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 598                 }
 599
 600                 if( $wgUser->isLoggedIn() ) {
 601                         // Ensure that logged-in users' generated CSS isn't clobbered
 602                         // by anons' publicly cacheable generated CSS.
 603                         $siteargs['smaxage'] = '0';
 604                         $siteargs['ts'] = $wgUser->mTouched;
 605                 }
 606                 // Per-user styles based on preferences
 607                 $siteargs['gen'] = 'css';
 608                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 609                         $siteargs['useskin'] = $us;
 610                 }
 611                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 612
 613                 // Per-user custom style pages
 614                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 615                         $action = $wgRequest->getVal( 'action' );
 616                         # If we're previewing the CSS page, use it
 617                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 618                                 $previewCss = $wgRequest->getText( 'wpTextbox1' );
 619                                 // @FIXME: properly escape the cdata!
 620                                 $this->usercss = "/*<![CDATA[*/\n" . $previewCss . "/*]]>*/";
 621                         } else {
 622                                 $out->addStyle( self::makeUrl( $this->userpage . '/' . $this->getSkinName() .'.css',
 623                                         'action=raw&ctype=text/css' ) );
 624                         }
 625                 }
 626
 627                 wfProfileOut( __METHOD__ );
 628         }
 629
 630         /**
 631          * Add skin specific stylesheets
 632          * @param $out OutputPage
 633          */
 634         function setupSkinUserCss( OutputPage $out ) {
 635                 $out->addStyle( 'common/shared.css' );
 636                 $out->addStyle( 'common/oldshared.css' );
 637                 $out->addStyle( $this->getStylesheet() );
 638                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 639         }
 640
 641         function getBodyOptions() {
 642                 global $wgUser, $wgTitle, $wgOut, $wgRequest, $wgContLang;
 643
 644                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 645
 646                 if ( 0 != $wgTitle->getNamespace() ) {
 647                         $a = array( 'bgcolor' => '#ffffec' );
 648                 }
 649                 else $a = array( 'bgcolor' => '#FFFFFF' );
 650                 if( $wgOut->isArticle() && $wgUser->getOption( 'editondblclick' ) &&
 651                   $wgTitle->quickUserCan( 'edit' ) ) {
 652                         $s = $wgTitle->getFullURL( $this->editUrlOptions() );
 653                         $s = 'document.location = "' .Xml::escapeJsString( $s ) .'";';
 654                         $a += array( 'ondblclick' => $s );
 655                 }
 656                 $a['onload'] = $wgOut->getOnloadHandler();
 657                 $a['class'] =
 658                         'mediawiki' .
 659                         ' '.( $wgContLang->isRTL() ? 'rtl' : 'ltr' ).
 660                         ' '.$this->getPageClasses( $wgTitle ) .
 661                         ' skin-'. Sanitizer::escapeClass( $this->getSkinName() );
 662                 return $a;
 663         }
 664
 665         function getPageClasses( $title ) {
 666                 $numeric = 'ns-'.$title->getNamespace();
 667                 if( $title->getNamespace() == NS_SPECIAL ) {
 668                         $type = 'ns-special';
 669                 } elseif( $title->isTalkPage() ) {
 670                         $type = 'ns-talk';
 671                 } else {
 672                         $type = 'ns-subject';
 673                 }
 674                 $name = Sanitizer::escapeClass( 'page-'.$title->getPrefixedText() );
 675                 return "$numeric $type $name";
 676         }
 677
 678         /**
 679          * URL to the logo
 680          */
 681         function getLogo() {
 682                 global $wgLogo;
 683                 return $wgLogo;
 684         }
 685
 686         /**
 687          * This will be called immediately after the <body> tag.  Split into
 688          * two functions to make it easier to subclass.
 689          */
 690         function beforeContent() {
 691                 return $this->doBeforeContent();
 692         }
 693
 694         function doBeforeContent() {
 695                 global $wgContLang;
 696                 wfProfileIn( __METHOD__ );
 697
 698                 $s = '';
 699                 $qb = $this->qbSetting();
 700
 701                 if( $langlinks = $this->otherLanguages() ) {
 702                         $rows = 2;
 703                         $borderhack = '';
 704                 } else {
 705                         $rows = 1;
 706                         $langlinks = false;
 707                         $borderhack = 'class="top"';
 708                 }
 709
 710                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 711                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 712
 713                 $shove = ( $qb != 0 );
 714                 $left = ( $qb == 1 || $qb == 3 );
 715                 if( $wgContLang->isRTL() ) $left = !$left;
 716
 717                 if( !$shove ) {
 718                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 719                           $this->logoText() . '</td>';
 720                 } elseif( $left ) {
 721                         $s .= $this->getQuickbarCompensator( $rows );
 722                 }
 723                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 724                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 725
 726                 $s .= $this->topLinks();
 727                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 728
 729                 $r = $wgContLang->isRTL() ? 'left' : 'right';
 730                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 731                 $s .= $this->nameAndLogin();
 732                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 733
 734                 if ( $langlinks ) {
 735                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 736                 }
 737
 738                 if ( $shove && !$left ) { # Right
 739                         $s .= $this->getQuickbarCompensator( $rows );
 740                 }
 741                 $s .= "</tr>\n</table>\n</div>\n";
 742                 $s .= "\n<div id='article'>\n";
 743
 744                 $notice = wfGetSiteNotice();
 745                 if( $notice ) {
 746                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 747                 }
 748                 $s .= $this->pageTitle();
 749                 $s .= $this->pageSubtitle();
 750                 $s .= $this->getCategories();
 751                 wfProfileOut( __METHOD__ );
 752                 return $s;
 753         }
 754
 755
 756         function getCategoryLinks() {
 757                 global $wgOut, $wgTitle, $wgUseCategoryBrowser;
 758                 global $wgContLang, $wgUser;
 759
 760                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 761
 762                 # Separator
 763                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 764
 765                 // Use Unicode bidi embedding override characters,
 766                 // to make sure links don't smash each other up in ugly ways.
 767                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 768                 $embed = "<span dir='$dir'>";
 769                 $pop = '</span>';
 770
 771                 $allCats = $wgOut->getCategoryLinks();
 772                 $s = '';
 773                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 774                 if ( !empty( $allCats['normal'] ) ) {
 775                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 776
 777                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 778                         $s .= '<div id="mw-normal-catlinks">' .
 779                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 780                                 . $colon . $t . '</div>';
 781                 }
 782
 783                 # Hidden categories
 784                 if ( isset( $allCats['hidden'] ) ) {
 785                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 786                                 $class ='mw-hidden-cats-user-shown';
 787                         } elseif ( $wgTitle->getNamespace() == NS_CATEGORY ) {
 788                                 $class = 'mw-hidden-cats-ns-shown';
 789                         } else {
 790                                 $class = 'mw-hidden-cats-hidden';
 791                         }
 792                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 793                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 794                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 795                                 "</div>";
 796                 }
 797
 798                 # optional 'dmoz-like' category browser. Will be shown under the list
 799                 # of categories an article belong to
 800                 if( $wgUseCategoryBrowser ){
 801                         $s .= '<br /><hr />';
 802
 803                         # get a big array of the parents tree
 804                         $parenttree = $wgTitle->getParentCategoryTree();
 805                         # Skin object passed by reference cause it can not be
 806                         # accessed under the method subfunction drawCategoryBrowser
 807                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 808                         # Clean out bogus first entry and sort them
 809                         unset( $tempout[0] );
 810                         asort( $tempout );
 811                         # Output one per line
 812                         $s .= implode( "<br />\n", $tempout );
 813                 }
 814
 815                 return $s;
 816         }
 817
 818         /**
 819          * Render the array as a serie of links.
 820          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 821          * @param &skin Object: skin passed by reference
 822          * @return String separated by &gt;, terminate with "\n"
 823          */
 824         function drawCategoryBrowser( $tree, &$skin ){
 825                 $return = '';
 826                 foreach( $tree as $element => $parent ) {
 827                         if( empty( $parent ) ) {
 828                                 # element start a new list
 829                                 $return .= "\n";
 830                         } else {
 831                                 # grab the others elements
 832                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 833                         }
 834                         # add our current element to the list
 835                         $eltitle = Title::newFromText( $element );
 836                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 837                 }
 838                 return $return;
 839         }
 840
 841         function getCategories() {
 842                 $catlinks=$this->getCategoryLinks();
 843
 844                 $classes = 'catlinks';
 845
 846                 if( strpos( $catlinks, '<div id="mw-normal-catlinks">' ) === false &&
 847                         strpos( $catlinks, '<div id="mw-hidden-catlinks" class="mw-hidden-cats-hidden">' ) !== false ) {
 848                         $classes .= ' catlinks-allhidden';
 849                 }
 850
 851                 if( !empty( $catlinks ) ){
 852                         return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 853                 }
 854         }
 855
 856         function getQuickbarCompensator( $rows = 1 ) {
 857                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 858         }
 859
 860         /**
 861          * This runs a hook to allow extensions placing their stuff after content
 862          * and article metadata (e.g. categories).
 863          * Note: This function has nothing to do with afterContent().
 864          *
 865          * This hook is placed here in order to allow using the same hook for all
 866          * skins, both the SkinTemplate based ones and the older ones, which directly
 867          * use this class to get their data.
 868          *
 869          * The output of this function gets processed in SkinTemplate::outputPage() for
 870          * the SkinTemplate based skins, all other skins should directly echo it.
 871          *
 872          * Returns an empty string by default, if not changed by any hook function.
 873          */
 874         protected function afterContentHook() {
 875                 $data = '';
 876
 877                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ){
 878                         // adding just some spaces shouldn't toggle the output
 879                         // of the whole <div/>, so we use trim() here
 880                         if( trim( $data ) != '' ){
 881                                 // Doing this here instead of in the skins to
 882                                 // ensure that the div has the same ID in all
 883                                 // skins
 884                                 $data = "<div id='mw-data-after-content'>\n" .
 885                                         "\t$data\n" .
 886                                         "</div>\n";
 887                         }
 888                 } else {
 889                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 890                 }
 891
 892                 return $data;
 893         }
 894
 895         /**
 896          * Generate debug data HTML for displaying at the bottom of the main content
 897          * area.
 898          * @return String HTML containing debug data, if enabled (otherwise empty).
 899          */
 900         protected function generateDebugHTML() {
 901                 global $wgShowDebug, $wgOut;
 902                 if ( $wgShowDebug ) {
 903                         $listInternals = str_replace( "\n", "</li>\n<li>", htmlspecialchars( $wgOut->mDebugtext ) );
 904                         return "\n<hr>\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\"><li>" .
 905                                 $listInternals . "</li></ul>\n";
 906                 }
 907                 return '';
 908         }
 909
 910         /**
 911          * This gets called shortly before the </body> tag.
 912          * @return String HTML to be put before </body>
 913          */
 914         function afterContent() {
 915                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 916                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 917         }
 918
 919         /**
 920          * This gets called shortly before the </body> tag.
 921          * @return String HTML-wrapped JS code to be put before </body>
 922          */
 923         function bottomScripts() {
 924                 global $wgJsMimeType;
 925                 $bottomScriptText = "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 926                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 927                 return $bottomScriptText;
 928         }
 929
 930         /** @return string Retrievied from HTML text */
 931         function printSource() {
 932                 global $wgTitle;
 933                 $url = htmlspecialchars( $wgTitle->getFullURL() );
 934                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 935         }
 936
 937         function printFooter() {
 938                 return "<p>" .  $this->printSource() .
 939                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 940         }
 941
 942         /** overloaded by derived classes */
 943         function doAfterContent() { return '</div></div>'; }
 944
 945         function pageTitleLinks() {
 946                 global $wgOut, $wgTitle, $wgUser, $wgRequest, $wgLang;
 947
 948                 $oldid = $wgRequest->getVal( 'oldid' );
 949                 $diff = $wgRequest->getVal( 'diff' );
 950                 $action = $wgRequest->getText( 'action' );
 951
 952                 $s[] = $this->printableLink();
 953                 $disclaimer = $this->disclaimerLink(); # may be empty
 954                 if( $disclaimer ) {
 955                         $s[] = $disclaimer;
 956                 }
 957                 $privacy = $this->privacyLink(); # may be empty too
 958                 if( $privacy ) {
 959                         $s[] = $privacy;
 960                 }
 961
 962                 if ( $wgOut->isArticleRelated() ) {
 963                         if ( $wgTitle->getNamespace() == NS_FILE ) {
 964                                 $name = $wgTitle->getDBkey();
 965                                 $image = wfFindFile( $wgTitle );
 966                                 if( $image ) {
 967                                         $link = htmlspecialchars( $image->getURL() );
 968                                         $style = $this->getInternalLinkAttributes( $link, $name );
 969                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 970                                 }
 971                         }
 972                 }
 973                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 974                         $s[] .= $this->makeKnownLinkObj( $wgTitle,
 975                                         wfMsg( 'currentrev' ) );
 976                 }
 977
 978                 if ( $wgUser->getNewtalk() ) {
 979                         # do not show "You have new messages" text when we are viewing our
 980                         # own talk page
 981                         if( !$wgTitle->equals( $wgUser->getTalkPage() ) ) {
 982                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessageslink' ), 'redirect=no' );
 983                                 $dl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessagesdifflink' ), 'diff=cur' );
 984                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 985                                 # disable caching
 986                                 $wgOut->setSquidMaxage( 0 );
 987                                 $wgOut->enableClientCache( false );
 988                         }
 989                 }
 990
 991                 $undelete = $this->getUndeleteLink();
 992                 if( !empty( $undelete ) ) {
 993                         $s[] = $undelete;
 994                 }
 995                 return $wgLang->pipeList( $s );
 996         }
 997
 998         function getUndeleteLink() {
 999                 global $wgUser, $wgTitle, $wgContLang, $wgLang, $action;
1000                 if(     $wgUser->isAllowed( 'deletedhistory' ) &&
1001                         ( ( $wgTitle->getArticleId() == 0 ) || ( $action == 'history' ) ) &&
1002                         ( $n = $wgTitle->isDeleted() ) ){
1003                         if ( $wgUser->isAllowed( 'undelete' ) ) {
1004                                 $msg = 'thisisdeleted';
1005                         } else {
1006                                 $msg = 'viewdeleted';
1007                         }
1008                         return wfMsg( $msg,
1009                                 $this->makeKnownLinkObj(
1010                                         SpecialPage::getTitleFor( 'Undelete', $wgTitle->getPrefixedDBkey() ),
1011                                         wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ) ) );
1012                 }
1013                 return '';
1014         }
1015
1016         function printableLink() {
1017                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1018
1019                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1020
1021                 $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1022                 if( $wgOut->isSyndicated() ) {
1023                         foreach( $wgFeedClasses as $format => $class ) {
1024                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1025                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1026                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1027                         }
1028                 }
1029                 return $wgLang->pipeList( $s );
1030         }
1031
1032         function pageTitle() {
1033                 global $wgOut;
1034                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1035                 return $s;
1036         }
1037
1038         function pageSubtitle() {
1039                 global $wgOut;
1040
1041                 $sub = $wgOut->getSubtitle();
1042                 if ( '' == $sub ) {
1043                         global $wgExtraSubtitle;
1044                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1045                 }
1046                 $subpages = $this->subPageSubtitle();
1047                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1048                 $s = "<p class='subtitle'>{$sub}</p>\n";
1049                 return $s;
1050         }
1051
1052         function subPageSubtitle() {
1053                 $subpages = '';
1054                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) )
1055                         return $subpages;
1056
1057                 global $wgOut, $wgTitle;
1058                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $wgTitle->getNamespace() ) ) {
1059                         $ptext = $wgTitle->getPrefixedText();
1060                         if( preg_match( '/\//', $ptext ) ) {
1061                                 $links = explode( '/', $ptext );
1062                                 array_pop( $links );
1063                                 $c = 0;
1064                                 $growinglink = '';
1065                                 $display = '';
1066                                 foreach( $links as $link ) {
1067                                         $growinglink .= $link;
1068                                         $display .= $link;
1069                                         $linkObj = Title::newFromText( $growinglink );
1070                                         if( is_object( $linkObj ) && $linkObj->exists() ){
1071                                                 $getlink = $this->makeKnownLinkObj( $linkObj, htmlspecialchars( $display ) );
1072                                                 $c++;
1073                                                 if( $c > 1 ) {
1074                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1075                                                 } else  {
1076                                                         $subpages .= '&lt; ';
1077                                                 }
1078                                                 $subpages .= $getlink;
1079                                                 $display = '';
1080                                         } else {
1081                                                 $display .= '/';
1082                                         }
1083                                         $growinglink .= '/';
1084                                 }
1085                         }
1086                 }
1087                 return $subpages;
1088         }
1089
1090         /**
1091          * Returns true if the IP should be shown in the header
1092          */
1093         function showIPinHeader() {
1094                 global $wgShowIPinHeader;
1095                 return $wgShowIPinHeader && session_id() != '';
1096         }
1097
1098         function nameAndLogin() {
1099                 global $wgUser, $wgTitle, $wgLang, $wgContLang;
1100
1101                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1102
1103                 $ret = '';
1104                 if ( $wgUser->isAnon() ) {
1105                         if( $this->showIPinHeader() ) {
1106                                 $name = wfGetIP();
1107
1108                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1109                                         $wgLang->getNsText( NS_TALK ) );
1110
1111                                 $ret .= "$name ($talkLink)";
1112                         } else {
1113                                 $ret .= wfMsg( 'notloggedin' );
1114                         }
1115
1116                         $returnTo = $wgTitle->getPrefixedDBkey();
1117                         $query = array();
1118                         if ( $logoutPage != $returnTo ) {
1119                                 $query['returnto'] = $returnTo;
1120                         }
1121
1122                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1123                                 ? 'nav-login-createaccount'
1124                                 : 'login';
1125                         $ret .= "\n<br />" . $this->link(
1126                                 SpecialPage::getTitleFor( 'Userlogin' ),
1127                                 wfMsg( $loginlink ), array(), $query
1128                         );
1129                 } else {
1130                         $returnTo = $wgTitle->getPrefixedDBkey();
1131                         $talkLink = $this->link( $wgUser->getTalkPage(),
1132                                 $wgLang->getNsText( NS_TALK ) );
1133
1134                         $ret .= $this->link( $wgUser->getUserPage(),
1135                                 htmlspecialchars( $wgUser->getName() ) );
1136                         $ret .= " ($talkLink)<br />";
1137                         $ret .= $wgLang->pipeList( array(
1138                                 $this->link(
1139                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1140                                         array(), array( 'returnto' => $returnTo )
1141                                 ),
1142                                 $this->specialLink( 'preferences' ),
1143                         ) );
1144                 }
1145                 $ret = $wgLang->pipeList( array(
1146                         $ret,
1147                         $this->link(
1148                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1149                                 wfMsg( 'help' )
1150                         ),
1151                 ) );
1152
1153                 return $ret;
1154         }
1155
1156         function getSearchLink() {
1157                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1158                 return $searchPage->getLocalURL();
1159         }
1160
1161         function escapeSearchLink() {
1162                 return htmlspecialchars( $this->getSearchLink() );
1163         }
1164
1165         function searchForm() {
1166                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1167                 $search = $wgRequest->getText( 'search' );
1168
1169                 $s = '<form id="searchform'.$this->searchboxes.'" name="search" class="inline" method="post" action="'
1170                   . $this->escapeSearchLink() . "\">\n"
1171                   . '<input type="text" id="searchInput'.$this->searchboxes.'" name="search" size="19" value="'
1172                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1173                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1174
1175                 if( $wgUseTwoButtonsSearchForm )
1176                         $s .= '&nbsp;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1177                 else
1178                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1179
1180                 $s .= '</form>';
1181
1182                 // Ensure unique id's for search boxes made after the first
1183                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1184
1185                 return $s;
1186         }
1187
1188         function topLinks() {
1189                 global $wgOut;
1190
1191                 $s = array(
1192                         $this->mainPageLink(),
1193                         $this->specialLink( 'recentchanges' )
1194                 );
1195
1196                 if ( $wgOut->isArticleRelated() ) {
1197                         $s[] = $this->editThisPage();
1198                         $s[] = $this->historyLink();
1199                 }
1200                 # Many people don't like this dropdown box
1201                 #$s[] = $this->specialPagesList();
1202
1203                 if( $this->variantLinks() ) {
1204                         $s[] = $this->variantLinks();
1205                 }
1206
1207                 if( $this->extensionTabLinks() ) {
1208                         $s[] = $this->extensionTabLinks();
1209                 }
1210
1211                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1212                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1213         }
1214
1215         /**
1216          * Compatibility for extensions adding functionality through tabs.
1217          * Eventually these old skins should be replaced with SkinTemplate-based
1218          * versions, sigh...
1219          * @return string
1220          */
1221         function extensionTabLinks() {
1222                 $tabs = array();
1223                 $out = '';
1224                 $s = array();
1225                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1226                 foreach( $tabs as $tab ) {
1227                         $s[] = Xml::element( 'a',
1228                                 array( 'href' => $tab['href'] ),
1229                                 $tab['text'] );
1230                 }
1231
1232                 if( count( $s ) ) {
1233                         global $wgLang;
1234
1235                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1236                         $out .= $wgLang->pipeList( $s );
1237                 }
1238
1239                 return $out;
1240         }
1241
1242         /**
1243          * Language/charset variant links for classic-style skins
1244          * @return string
1245          */
1246         function variantLinks() {
1247                 $s = '';
1248                 /* show links to different language variants */
1249                 global $wgDisableLangConversion, $wgLang, $wgContLang, $wgTitle;
1250                 $variants = $wgContLang->getVariants();
1251                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1252                         foreach( $variants as $code ) {
1253                                 $varname = $wgContLang->getVariantname( $code );
1254                                 if( $varname == 'disable' )
1255                                         continue;
1256                                 $s = $wgLang->pipeList( array(
1257                                         $s,
1258                                         '<a href="' . $wgTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1259                                 ) );
1260                         }
1261                 }
1262                 return $s;
1263         }
1264
1265         function bottomLinks() {
1266                 global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
1267                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1268
1269                 $s = '';
1270                 if ( $wgOut->isArticleRelated() ) {
1271                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1272                         if ( $wgUser->isLoggedIn() ) {
1273                                 $element[] = $this->watchThisPage();
1274                         }
1275                         $element[] = $this->talkLink();
1276                         $element[] = $this->historyLink();
1277                         $element[] = $this->whatLinksHere();
1278                         $element[] = $this->watchPageLinksLink();
1279
1280                         if( $wgUseTrackbacks )
1281                                 $element[] = $this->trackbackLink();
1282
1283                         if ( $wgTitle->getNamespace() == NS_USER
1284                             || $wgTitle->getNamespace() == NS_USER_TALK ){
1285                                 $id = User::idFromName( $wgTitle->getText() );
1286                                 $ip = User::isIP( $wgTitle->getText() );
1287
1288                                 if( $id || $ip ) { # both anons and non-anons have contri list
1289                                         $element[] = $this->userContribsLink();
1290                                 }
1291                                 if( $this->showEmailUser( $id ) ) {
1292                                         $element[] = $this->emailUserLink();
1293                                 }
1294                         }
1295
1296                         $s = implode( $element, $sep );
1297
1298                         if ( $wgTitle->getArticleId() ) {
1299                                 $s .= "\n<br />";
1300                                 if( $wgUser->isAllowed( 'delete' ) ) { $s .= $this->deleteThisPage(); }
1301                                 if( $wgUser->isAllowed( 'protect' ) ) { $s .= $sep . $this->protectThisPage(); }
1302                                 if( $wgUser->isAllowed( 'move' ) ) { $s .= $sep . $this->moveThisPage(); }
1303                         }
1304                         $s .= "<br />\n" . $this->otherLanguages();
1305                 }
1306
1307                 return $s;
1308         }
1309
1310         function pageStats() {
1311                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1312                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgTitle, $wgPageShowWatchingUsers;
1313
1314                 $oldid = $wgRequest->getVal( 'oldid' );
1315                 $diff = $wgRequest->getVal( 'diff' );
1316                 if ( ! $wgOut->isArticle() ) { return ''; }
1317                 if( !$wgArticle instanceOf Article ) { return ''; }
1318                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1319                 if ( 0 == $wgArticle->getID() ) { return ''; }
1320
1321                 $s = '';
1322                 if ( !$wgDisableCounters ) {
1323                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1324                         if ( $count ) {
1325                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1326                         }
1327                 }
1328
1329                 if( $wgMaxCredits != 0 ){
1330                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1331                 } else {
1332                         $s .= $this->lastModified();
1333                 }
1334
1335                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1336                         $dbr = wfGetDB( DB_SLAVE );
1337                         $res = $dbr->select( 'watchlist',
1338                                 array( 'COUNT(*) AS n' ),
1339                                 array( 'wl_title' => $dbr->strencode( $wgTitle->getDBkey() ), 'wl_namespace' => $wgTitle->getNamespace() ),
1340                                 __METHOD__
1341                         );
1342                         $x = $dbr->fetchObject( $res );
1343
1344                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1345                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1346                         );
1347                 }
1348
1349                 return $s . ' ' .  $this->getCopyright();
1350         }
1351
1352         function getCopyright( $type = 'detect' ) {
1353                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1354
1355                 if ( $type == 'detect' ) {
1356                         $diff = $wgRequest->getVal( 'diff' );
1357                         $isCur = $wgArticle && $wgArticle->isCurrent();
1358                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1359                                 $type = 'history';
1360                         } else {
1361                                 $type = 'normal';
1362                         }
1363                 }
1364
1365                 if ( $type == 'history' ) {
1366                         $msg = 'history_copyright';
1367                 } else {
1368                         $msg = 'copyright';
1369                 }
1370
1371                 $out = '';
1372                 if( $wgRightsPage ) {
1373                         $link = $this->makeKnownLink( $wgRightsPage, $wgRightsText );
1374                 } elseif( $wgRightsUrl ) {
1375                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1376                 } elseif( $wgRightsText ) {
1377                         $link = $wgRightsText;
1378                 } else {
1379                         # Give up now
1380                         return $out;
1381                 }
1382                 $out .= wfMsgForContent( $msg, $link );
1383                 return $out;
1384         }
1385
1386         function getCopyrightIcon() {
1387                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1388                 $out = '';
1389                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1390                         $out = $wgCopyrightIcon;
1391                 } else if ( $wgRightsIcon ) {
1392                         $icon = htmlspecialchars( $wgRightsIcon );
1393                         if ( $wgRightsUrl ) {
1394                                 $url = htmlspecialchars( $wgRightsUrl );
1395                                 $out .= '<a href="'.$url.'">';
1396                         }
1397                         $text = htmlspecialchars( $wgRightsText );
1398                         $out .= "<img src=\"$icon\" alt='$text' />";
1399                         if ( $wgRightsUrl ) {
1400                                 $out .= '</a>';
1401                         }
1402                 }
1403                 return $out;
1404         }
1405
1406         function getPoweredBy() {
1407                 global $wgStylePath;
1408                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1409                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="Powered by MediaWiki" /></a>';
1410                 return $img;
1411         }
1412
1413         function lastModified() {
1414                 global $wgLang, $wgArticle;
1415                 if( $this->mRevisionId ) {
1416                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1417                 } else {
1418                         $timestamp = $wgArticle->getTimestamp();
1419                 }
1420                 if ( $timestamp ) {
1421                         $d = $wgLang->date( $timestamp, true );
1422                         $t = $wgLang->time( $timestamp, true );
1423                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1424                 } else {
1425                         $s = '';
1426                 }
1427                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1428                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1429                 }
1430                 return $s;
1431         }
1432
1433         function logoText( $align = '' ) {
1434                 if ( '' != $align ) {
1435                         $a = " align='{$align}'";
1436                 } else {
1437                         $a = '';
1438                 }
1439
1440                 $mp = wfMsg( 'mainpage' );
1441                 $mptitle = Title::newMainPage();
1442                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1443
1444                 $logourl = $this->getLogo();
1445                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1446                 return $s;
1447         }
1448
1449         /**
1450          * show a drop-down box of special pages
1451          */
1452         function specialPagesList() {
1453                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1454                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1455                 foreach ( $pages as $name => $page ) {
1456                         $pages[$name] = $page->getDescription();
1457                 }
1458
1459                 $go = wfMsg( 'go' );
1460                 $sp = wfMsg( 'specialpages' );
1461                 $spp = $wgContLang->specialPage( 'Specialpages' );
1462
1463                 $s = '<form id="specialpages" method="get" ' .
1464                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1465                 $s .= "<select name=\"wpDropdown\">\n";
1466                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1467
1468
1469                 foreach ( $pages as $name => $desc ) {
1470                         $p = $wgContLang->specialPage( $name );
1471                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1472                 }
1473                 $s .= "</select>\n";
1474                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1475                 $s .= "</form>\n";
1476                 return $s;
1477         }
1478
1479         function mainPageLink() {
1480                 $s = $this->makeKnownLinkObj( Title::newMainPage(), wfMsg( 'mainpage' ) );
1481                 return $s;
1482         }
1483
1484         function copyrightLink() {
1485                 $s = $this->makeKnownLink( wfMsgForContent( 'copyrightpage' ),
1486                   wfMsg( 'copyrightpagename' ) );
1487                 return $s;
1488         }
1489
1490         private function footerLink ( $desc, $page ) {
1491                 // if the link description has been set to "-" in the default language,
1492                 if ( wfMsgForContent( $desc )  == '-') {
1493                         // then it is disabled, for all languages.
1494                         return '';
1495                 } else {
1496                         // Otherwise, we display the link for the user, described in their
1497                         // language (which may or may not be the same as the default language),
1498                         // but we make the link target be the one site-wide page.
1499                         return $this->makeKnownLink( wfMsgForContent( $page ),
1500                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) ) );
1501                 }
1502         }
1503
1504         function privacyLink() {
1505                 return $this->footerLink( 'privacy', 'privacypage' );
1506         }
1507
1508         function aboutLink() {
1509                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1510         }
1511
1512         function disclaimerLink() {
1513                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1514         }
1515
1516         function editThisPage() {
1517                 global $wgOut, $wgTitle;
1518
1519                 if ( !$wgOut->isArticleRelated() ) {
1520                         $s = wfMsg( 'protectedpage' );
1521                 } else {
1522                         if( $wgTitle->quickUserCan( 'edit' ) && $wgTitle->exists() ) {
1523                                 $t = wfMsg( 'editthispage' );
1524                         } elseif( $wgTitle->quickUserCan( 'create' ) && !$wgTitle->exists() ) {
1525                                 $t = wfMsg( 'create-this-page' );
1526                         } else {
1527                                 $t = wfMsg( 'viewsource' );
1528                         }
1529
1530                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $this->editUrlOptions() );
1531                 }
1532                 return $s;
1533         }
1534
1535         /**
1536          * Return URL options for the 'edit page' link.
1537          * This may include an 'oldid' specifier, if the current page view is such.
1538          *
1539          * @return string
1540          * @private
1541          */
1542         function editUrlOptions() {
1543                 global $wgArticle;
1544
1545                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1546                         return 'action=edit&oldid=' . intval( $this->mRevisionId );
1547                 } else {
1548                         return 'action=edit';
1549                 }
1550         }
1551
1552         function deleteThisPage() {
1553                 global $wgUser, $wgTitle, $wgRequest;
1554
1555                 $diff = $wgRequest->getVal( 'diff' );
1556                 if ( $wgTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1557                         $t = wfMsg( 'deletethispage' );
1558
1559                         $s = $this->makeKnownLinkObj( $wgTitle, $t, 'action=delete' );
1560                 } else {
1561                         $s = '';
1562                 }
1563                 return $s;
1564         }
1565
1566         function protectThisPage() {
1567                 global $wgUser, $wgTitle, $wgRequest;
1568
1569                 $diff = $wgRequest->getVal( 'diff' );
1570                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1571                         if ( $wgTitle->isProtected() ) {
1572                                 $t = wfMsg( 'unprotectthispage' );
1573                                 $q = 'action=unprotect';
1574                         } else {
1575                                 $t = wfMsg( 'protectthispage' );
1576                                 $q = 'action=protect';
1577                         }
1578                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1579                 } else {
1580                         $s = '';
1581                 }
1582                 return $s;
1583         }
1584
1585         function watchThisPage() {
1586                 global $wgOut, $wgTitle;
1587                 ++$this->mWatchLinkNum;
1588
1589                 if ( $wgOut->isArticleRelated() ) {
1590                         if ( $wgTitle->userIsWatching() ) {
1591                                 $t = wfMsg( 'unwatchthispage' );
1592                                 $q = 'action=unwatch';
1593                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1594                         } else {
1595                                 $t = wfMsg( 'watchthispage' );
1596                                 $q = 'action=watch';
1597                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1598                         }
1599                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q, '', '', " id=\"$id\"" );
1600                 } else {
1601                         $s = wfMsg( 'notanarticle' );
1602                 }
1603                 return $s;
1604         }
1605
1606         function moveThisPage() {
1607                 global $wgTitle;
1608
1609                 if ( $wgTitle->quickUserCan( 'move' ) ) {
1610                         return $this->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
1611                           wfMsg( 'movethispage' ), 'target=' . $wgTitle->getPrefixedURL() );
1612                 } else {
1613                         // no message if page is protected - would be redundant
1614                         return '';
1615                 }
1616         }
1617
1618         function historyLink() {
1619                 global $wgTitle;
1620
1621                 return $this->link( $wgTitle, wfMsg( 'history' ),
1622                         array( 'rel' => 'archives' ), array( 'action' => 'history' ) );
1623         }
1624
1625         function whatLinksHere() {
1626                 global $wgTitle;
1627
1628                 return $this->makeKnownLinkObj(
1629                         SpecialPage::getTitleFor( 'Whatlinkshere', $wgTitle->getPrefixedDBkey() ),
1630                         wfMsg( 'whatlinkshere' ) );
1631         }
1632
1633         function userContribsLink() {
1634                 global $wgTitle;
1635
1636                 return $this->makeKnownLinkObj(
1637                         SpecialPage::getTitleFor( 'Contributions', $wgTitle->getDBkey() ),
1638                         wfMsg( 'contributions' ) );
1639         }
1640
1641         function showEmailUser( $id ) {
1642                 global $wgUser;
1643                 $targetUser = User::newFromId( $id );
1644                 return  $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1645                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1646         }
1647
1648         function emailUserLink() {
1649                 global $wgTitle;
1650
1651                 return $this->makeKnownLinkObj(
1652                         SpecialPage::getTitleFor( 'Emailuser', $wgTitle->getDBkey() ),
1653                         wfMsg( 'emailuser' ) );
1654         }
1655
1656         function watchPageLinksLink() {
1657                 global $wgOut, $wgTitle;
1658
1659                 if ( ! $wgOut->isArticleRelated() ) {
1660                         return '(' . wfMsg( 'notanarticle' ) . ')';
1661                 } else {
1662                         return $this->makeKnownLinkObj(
1663                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $wgTitle->getPrefixedDBkey() ),
1664                                 wfMsg( 'recentchangeslinked' ) );
1665                 }
1666         }
1667
1668         function trackbackLink() {
1669                 global $wgTitle;
1670
1671                 return '<a href="' . $wgTitle->trackbackURL() . '">'
1672                         . wfMsg( 'trackbacklink' ) . '</a>';
1673         }
1674
1675         function otherLanguages() {
1676                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1677
1678                 if ( $wgHideInterlanguageLinks ) {
1679                         return '';
1680                 }
1681
1682                 $a = $wgOut->getLanguageLinks();
1683                 if ( 0 == count( $a ) ) {
1684                         return '';
1685                 }
1686
1687                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1688                 $first = true;
1689                 if( $wgContLang->isRTL() ) $s .= '<span dir="LTR">';
1690                 foreach( $a as $l ) {
1691                         if ( !$first ) {
1692                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1693                         }
1694                         $first = false;
1695
1696                         $nt = Title::newFromText( $l );
1697                         $url = $nt->escapeFullURL();
1698                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1699
1700                         if ( '' == $text ) { $text = $l; }
1701                         $style = $this->getExternalLinkAttributes( $l, $text );
1702                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1703                 }
1704                 if( $wgContLang->isRTL() ) $s .= '</span>';
1705                 return $s;
1706         }
1707
1708         function talkLink() {
1709                 global $wgTitle;
1710
1711                 if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
1712                         # No discussion links for special pages
1713                         return '';
1714                 }
1715
1716                 $linkOptions = array();
1717
1718                 if( $wgTitle->isTalkPage() ) {
1719                         $link = $wgTitle->getSubjectPage();
1720                         switch( $link->getNamespace() ) {
1721                                 case NS_MAIN:
1722                                         $text = wfMsg( 'articlepage' );
1723                                         break;
1724                                 case NS_USER:
1725                                         $text = wfMsg( 'userpage' );
1726                                         break;
1727                                 case NS_PROJECT:
1728                                         $text = wfMsg( 'projectpage' );
1729                                         break;
1730                                 case NS_FILE:
1731                                         $text = wfMsg( 'imagepage' );
1732                                         # Make link known if image exists, even if the desc. page doesn't.
1733                                         if( wfFindFile( $link ) )
1734                                                 $linkOptions[] = 'known';
1735                                         break;
1736                                 case NS_MEDIAWIKI:
1737                                         $text = wfMsg( 'mediawikipage' );
1738                                         break;
1739                                 case NS_TEMPLATE:
1740                                         $text = wfMsg( 'templatepage' );
1741                                         break;
1742                                 case NS_HELP:
1743                                         $text = wfMsg( 'viewhelppage' );
1744                                         break;
1745                                 case NS_CATEGORY:
1746                                         $text = wfMsg( 'categorypage' );
1747                                         break;
1748                                 default:
1749                                         $text = wfMsg( 'articlepage' );
1750                         }
1751                 } else {
1752                         $link = $wgTitle->getTalkPage();
1753                         $text = wfMsg( 'talkpage' );
1754                 }
1755
1756                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1757
1758                 return $s;
1759         }
1760
1761         function commentLink() {
1762                 global $wgTitle, $wgOut;
1763
1764                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
1765                         return '';
1766                 }
1767
1768                 # __NEWSECTIONLINK___ changes behaviour here
1769                 # If it's present, the link points to this page, otherwise
1770                 # it points to the talk page
1771                 if( $wgTitle->isTalkPage() ) {
1772                         $title = $wgTitle;
1773                 } elseif( $wgOut->showNewSectionLink() ) {
1774                         $title = $wgTitle;
1775                 } else {
1776                         $title = $wgTitle->getTalkPage();
1777                 }
1778
1779                 return $this->makeKnownLinkObj( $title, wfMsg( 'postcomment' ), 'action=edit&section=new' );
1780         }
1781
1782         /* these are used extensively in SkinTemplate, but also some other places */
1783         static function makeMainPageUrl( $urlaction = '' ) {
1784                 $title = Title::newMainPage();
1785                 self::checkTitle( $title, '' );
1786                 return $title->getLocalURL( $urlaction );
1787         }
1788
1789         static function makeSpecialUrl( $name, $urlaction = '' ) {
1790                 $title = SpecialPage::getTitleFor( $name );
1791                 return $title->getLocalURL( $urlaction );
1792         }
1793
1794         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1795                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1796                 return $title->getLocalURL( $urlaction );
1797         }
1798
1799         static function makeI18nUrl( $name, $urlaction = '' ) {
1800                 $title = Title::newFromText( wfMsgForContent( $name ) );
1801                 self::checkTitle( $title, $name );
1802                 return $title->getLocalURL( $urlaction );
1803         }
1804
1805         static function makeUrl( $name, $urlaction = '' ) {
1806                 $title = Title::newFromText( $name );
1807                 self::checkTitle( $title, $name );
1808                 return $title->getLocalURL( $urlaction );
1809         }
1810
1811         # If url string starts with http, consider as external URL, else
1812         # internal
1813         static function makeInternalOrExternalUrl( $name ) {
1814                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1815                         return $name;
1816                 } else {
1817                         return self::makeUrl( $name );
1818                 }
1819         }
1820
1821         # this can be passed the NS number as defined in Language.php
1822         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1823                 $title = Title::makeTitleSafe( $namespace, $name );
1824                 self::checkTitle( $title, $name );
1825                 return $title->getLocalURL( $urlaction );
1826         }
1827
1828         /* these return an array with the 'href' and boolean 'exists' */
1829         static function makeUrlDetails( $name, $urlaction = '' ) {
1830                 $title = Title::newFromText( $name );
1831                 self::checkTitle( $title, $name );
1832                 return array(
1833                         'href' => $title->getLocalURL( $urlaction ),
1834                         'exists' => $title->getArticleID() != 0 ? true : false
1835                 );
1836         }
1837
1838         /**
1839          * Make URL details where the article exists (or at least it's convenient to think so)
1840          */
1841         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1842                 $title = Title::newFromText( $name );
1843                 self::checkTitle( $title, $name );
1844                 return array(
1845                         'href' => $title->getLocalURL( $urlaction ),
1846                         'exists' => true
1847                 );
1848         }
1849
1850         # make sure we have some title to operate on
1851         static function checkTitle( &$title, $name ) {
1852                 if( !is_object( $title ) ) {
1853                         $title = Title::newFromText( $name );
1854                         if( !is_object( $title ) ) {
1855                                 $title = Title::newFromText( '--error: link target missing--' );
1856                         }
1857                 }
1858         }
1859
1860         /**
1861          * Build an array that represents the sidebar(s), the navigation bar among them
1862          *
1863          * @return array
1864          */
1865         function buildSidebar() {
1866                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1867                 global $wgLang;
1868                 wfProfileIn( __METHOD__ );
1869
1870                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
1871
1872                 if ( $wgEnableSidebarCache ) {
1873                         $cachedsidebar = $parserMemc->get( $key );
1874                         if ( $cachedsidebar ) {
1875                                 wfProfileOut( __METHOD__ );
1876                                 return $cachedsidebar;
1877                         }
1878                 }
1879
1880                 $bar = array();
1881                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
1882                 $heading = '';
1883                 foreach( $lines as $line ) {
1884                         if( strpos( $line, '*' ) !== 0 )
1885                                 continue;
1886                         if( strpos( $line, '**') !== 0 ) {
1887                                 $line = trim( $line, '* ' );
1888                                 $heading = $line;
1889                                 if( !array_key_exists( $heading, $bar ) ) $bar[$heading] = array();
1890                         } else {
1891                                 if( strpos( $line, '|' ) !== false ) { // sanity check
1892                                         $line = array_map( 'trim', explode( '|', trim( $line, '* ' ), 2 ) );
1893                                         $link = wfMsgForContent( $line[0] );
1894                                         if( $link == '-' )
1895                                                 continue;
1896
1897                                         $text = wfMsgExt( $line[1], 'parsemag' );
1898                                         if( wfEmptyMsg( $line[1], $text ) )
1899                                                 $text = $line[1];
1900                                         if( wfEmptyMsg( $line[0], $link ) )
1901                                                 $link = $line[0];
1902
1903                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1904                                                 $href = $link;
1905                                         } else {
1906                                                 $title = Title::newFromText( $link );
1907                                                 if ( $title ) {
1908                                                         $title = $title->fixSpecialName();
1909                                                         $href = $title->getLocalURL();
1910                                                 } else {
1911                                                         $href = 'INVALID-TITLE';
1912                                                 }
1913                                         }
1914
1915                                         $bar[$heading][] = array(
1916                                                 'text' => $text,
1917                                                 'href' => $href,
1918                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
1919                                                 'active' => false
1920                                         );
1921                                 } else { continue; }
1922                         }
1923                 }
1924                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1925                 if ( $wgEnableSidebarCache ) $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1926                 wfProfileOut( __METHOD__ );
1927                 return $bar;
1928         }
1929 }