includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30
  31         /** Constructor, call parent constructor */
  32         function __construct() {
  33                 parent::__construct();
  34         }
  35
  36         /**
  37          * Fetch the set of available skins.
  38          * @return array of strings
  39          */
  40         static function getSkinNames() {
  41                 global $wgValidSkinNames;
  42                 static $skinsInitialised = false;
  43                 if ( !$skinsInitialised ) {
  44                         # Get a list of available skins
  45                         # Build using the regular expression '^(.*).php$'
  46                         # Array keys are all lower case, array value keep the case used by filename
  47                         #
  48                         wfProfileIn( __METHOD__ . '-init' );
  49                         global $wgStyleDirectory;
  50                         $skinDir = dir( $wgStyleDirectory );
  51
  52                         # while code from www.php.net
  53                         while( false !== ( $file = $skinDir->read() ) ) {
  54                                 // Skip non-PHP files, hidden files, and '.dep' includes
  55                                 $matches = array();
  56                                 if( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  57                                         $aSkin = $matches[1];
  58                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  59                                 }
  60                         }
  61                         $skinDir->close();
  62                         $skinsInitialised = true;
  63                         wfProfileOut( __METHOD__ . '-init' );
  64                 }
  65                 return $wgValidSkinNames;
  66         }
  67
  68         /**
  69          * Fetch the list of usable skins in regards to $wgSkipSkins.
  70          * Useful for Special:Preferences and other places where you
  71          * only want to show skins users _can_ use.
  72          * @return array of strings
  73          */
  74         public static function getUsableSkins() {
  75                 global $wgSkipSkins;
  76                 $usableSkins = self::getSkinNames();
  77                 foreach ( $wgSkipSkins as $skip ) {
  78                         unset( $usableSkins[$skip] );
  79                 }
  80                 return $usableSkins;
  81         }
  82
  83         /**
  84          * Normalize a skin preference value to a form that can be loaded.
  85          * If a skin can't be found, it will fall back to the configured
  86          * default (or the old 'Classic' skin if that's broken).
  87          * @param $key String: 'monobook', 'standard', etc.
  88          * @return string
  89          */
  90         static function normalizeKey( $key ) {
  91                 global $wgDefaultSkin;
  92                 $skinNames = Skin::getSkinNames();
  93
  94                 if( $key == '' ) {
  95                         // Don't return the default immediately;
  96                         // in a misconfiguration we need to fall back.
  97                         $key = $wgDefaultSkin;
  98                 }
  99
 100                 if( isset( $skinNames[$key] ) ) {
 101                         return $key;
 102                 }
 103
 104                 // Older versions of the software used a numeric setting
 105                 // in the user preferences.
 106                 $fallback = array(
 107                         0 => $wgDefaultSkin,
 108                         1 => 'nostalgia',
 109                         2 => 'cologneblue'
 110                 );
 111
 112                 if( isset( $fallback[$key] ) ) {
 113                         $key = $fallback[$key];
 114                 }
 115
 116                 if( isset( $skinNames[$key] ) ) {
 117                         return $key;
 118                 } else {
 119                         return 'monobook';
 120                 }
 121         }
 122
 123         /**
 124          * Factory method for loading a skin of a given type
 125          * @param $key String: 'monobook', 'standard', etc.
 126          * @return Skin
 127          */
 128         static function &newFromKey( $key ) {
 129                 global $wgStyleDirectory;
 130
 131                 $key = Skin::normalizeKey( $key );
 132
 133                 $skinNames = Skin::getSkinNames();
 134                 $skinName = $skinNames[$key];
 135                 $className = 'Skin' . ucfirst( $key );
 136
 137                 # Grab the skin class and initialise it.
 138                 if ( !class_exists( $className ) ) {
 139                         // Preload base classes to work around APC/PHP5 bug
 140                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 141                         if( file_exists( $deps ) ) {
 142                                 include_once( $deps );
 143                         }
 144                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 145
 146                         # Check if we got if not failback to default skin
 147                         if( !class_exists( $className ) ) {
 148                                 # DO NOT die if the class isn't found. This breaks maintenance
 149                                 # scripts and can cause a user account to be unrecoverable
 150                                 # except by SQL manipulation if a previously valid skin name
 151                                 # is no longer valid.
 152                                 wfDebug( "Skin class does not exist: $className\n" );
 153                                 $className = 'SkinMonobook';
 154                                 require_once( "{$wgStyleDirectory}/MonoBook.php" );
 155                         }
 156                 }
 157                 $skin = new $className;
 158                 return $skin;
 159         }
 160
 161         /** @return string path to the skin stylesheet */
 162         function getStylesheet() {
 163                 return 'common/wikistandard.css';
 164         }
 165
 166         /** @return string skin name */
 167         public function getSkinName() {
 168                 return $this->skinname;
 169         }
 170
 171         function qbSetting() {
 172                 global $wgOut, $wgUser;
 173
 174                 if ( $wgOut->isQuickbarSuppressed() ) {
 175                         return 0;
 176                 }
 177                 $q = $wgUser->getOption( 'quickbar', 0 );
 178                 return $q;
 179         }
 180
 181         function initPage( OutputPage $out ) {
 182                 global $wgFavicon, $wgAppleTouchIcon;
 183
 184                 wfProfileIn( __METHOD__ );
 185
 186                 # Generally the order of the favicon and apple-touch-icon links
 187                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 188                 # uses whichever one appears later in the HTML source. Make sure
 189                 # apple-touch-icon is specified first to avoid this.
 190                 if( false !== $wgAppleTouchIcon ) {
 191                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 192                 }
 193
 194                 if( false !== $wgFavicon ) {
 195                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 196                 }
 197
 198                 # OpenSearch description link
 199                 $out->addLink( array(
 200                         'rel' => 'search',
 201                         'type' => 'application/opensearchdescription+xml',
 202                         'href' => wfScript( 'opensearch_desc' ),
 203                         'title' => wfMsgForContent( 'opensearch-desc' ),
 204                 ));
 205
 206                 $this->addMetadataLinks( $out );
 207
 208                 $this->mRevisionId = $out->mRevisionId;
 209
 210                 $this->preloadExistence();
 211
 212                 wfProfileOut( __METHOD__ );
 213         }
 214
 215         /**
 216          * Preload the existence of three commonly-requested pages in a single query
 217          */
 218         function preloadExistence() {
 219                 global $wgUser;
 220
 221                 // User/talk link
 222                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 223
 224                 // Other tab link
 225                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 226                         // nothing
 227                 } elseif ( $this->mTitle->isTalkPage() ) {
 228                         $titles[] = $this->mTitle->getSubjectPage();
 229                 } else {
 230                         $titles[] = $this->mTitle->getTalkPage();
 231                 }
 232
 233                 $lb = new LinkBatch( $titles );
 234                 $lb->execute();
 235         }
 236
 237         /**
 238          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 239          * output.
 240          * @param $out Object: instance of OutputPage
 241          */
 242         function addMetadataLinks( OutputPage $out ) {
 243                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 244                 global $wgRightsPage, $wgRightsUrl;
 245
 246                 if( $out->isArticleRelated() ) {
 247                         # note: buggy CC software only reads first "meta" link
 248                         if( $wgEnableCreativeCommonsRdf ) {
 249                                 $out->addMetadataLink( array(
 250                                         'title' => 'Creative Commons',
 251                                         'type' => 'application/rdf+xml',
 252                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 253                                 );
 254                         }
 255                         if( $wgEnableDublinCoreRdf ) {
 256                                 $out->addMetadataLink( array(
 257                                         'title' => 'Dublin Core',
 258                                         'type' => 'application/rdf+xml',
 259                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 260                                 );
 261                         }
 262                 }
 263                 $copyright = '';
 264                 if( $wgRightsPage ) {
 265                         $copy = Title::newFromText( $wgRightsPage );
 266                         if( $copy ) {
 267                                 $copyright = $copy->getLocalURL();
 268                         }
 269                 }
 270                 if( !$copyright && $wgRightsUrl ) {
 271                         $copyright = $wgRightsUrl;
 272                 }
 273                 if( $copyright ) {
 274                         $out->addLink( array(
 275                                 'rel' => 'copyright',
 276                                 'href' => $copyright )
 277                         );
 278                 }
 279         }
 280
 281         /**
 282          * Set some local variables
 283          */
 284         protected function setMembers() {
 285                 global $wgUser;
 286                 $this->mUser = $wgUser;
 287                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 288                 $this->usercss = false;
 289         }
 290
 291         /**
 292          * Set the title
 293          * @param Title $t The title to use
 294          */
 295         public function setTitle( $t ) {
 296                 $this->mTitle = $t;
 297         }
 298
 299         /** Get the title */
 300         public function getTitle() {
 301                 return $this->mTitle;
 302         }
 303
 304         /**
 305          * Outputs the HTML generated by other functions.
 306          * @param $out Object: instance of OutputPage
 307          */
 308         function outputPage( OutputPage $out ) {
 309                 global $wgDebugComments;
 310                 wfProfileIn( __METHOD__ );
 311
 312                 $this->setMembers();
 313                 $this->initPage( $out );
 314
 315                 // See self::afterContentHook() for documentation
 316                 $afterContent = $this->afterContentHook();
 317
 318                 $out->out( $out->headElement( $this ) );
 319
 320                 if ( $wgDebugComments ) {
 321                         $out->out( "<!-- Wiki debugging output:\n" .
 322                           $out->mDebugtext . "-->\n" );
 323                 }
 324
 325                 $out->out( $this->beforeContent() );
 326
 327                 $out->out( $out->mBodytext . "\n" );
 328
 329                 $out->out( $this->afterContent() );
 330
 331                 $out->out( $afterContent );
 332
 333                 $out->out( $this->bottomScripts() );
 334
 335                 $out->out( wfReportTime() );
 336
 337                 $out->out( "\n</body></html>" );
 338                 wfProfileOut( __METHOD__ );
 339         }
 340
 341         static function makeVariablesScript( $data ) {
 342                 if( $data ) {
 343                         $r = array();
 344                         foreach ( $data as $name => $value ) {
 345                                 $encValue = Xml::encodeJsVar( $value );
 346                                 $r[] = "$name=$encValue";
 347                         }
 348                         $js = 'var ' . implode( ",\n", $r ) . ';';
 349                         return Html::inlineScript( "\n$js\n" );
 350                 } else {
 351                         return '';
 352                 }
 353         }
 354
 355         /**
 356          * Make a <script> tag containing global variables
 357          * @param $skinName string Name of the skin
 358          * The odd calling convention is for backwards compatibility
 359          * @TODO @FIXME Make this not depend on $wgTitle!
 360          */
 361         static function makeGlobalVariablesScript( $skinName ) {
 362                 if ( is_array( $skinName ) ) {
 363                         # Weird back-compat stuff.
 364                         $skinName = $skinName['skinname'];
 365                 }
 366                 global $wgScript, $wgTitle, $wgStylePath, $wgUser, $wgScriptExtension;
 367                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 368                 global $wgOut, $wgArticle;
 369                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 370                 global $wgUseAjax, $wgAjaxWatch;
 371                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 372                 global $wgRestrictionTypes;
 373                 global $wgMWSuggestTemplate, $wgDBname, $wgEnableMWSuggest;
 374                 global $wgSitename;
 375
 376                 $ns = $wgTitle->getNamespace();
 377                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 378                 $separatorTransTable = $wgContLang->separatorTransformTable();
 379                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
 380                 $compactSeparatorTransTable = array(
 381                         implode( "\t", array_keys( $separatorTransTable ) ),
 382                         implode( "\t", $separatorTransTable ),
 383                 );
 384                 $digitTransTable = $wgContLang->digitTransformTable();
 385                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
 386                 $compactDigitTransTable = array(
 387                         implode( "\t", array_keys( $digitTransTable ) ),
 388                         implode( "\t", $digitTransTable ),
 389                 );
 390
 391                 $mainPage = Title::newFromText( wfMsgForContent( 'mainpage' ) );
 392                 $vars = array(
 393                         'skin' => $skinName,
 394                         'stylepath' => $wgStylePath,
 395                         'wgUrlProtocols' => wfUrlProtocols(),
 396                         'wgArticlePath' => $wgArticlePath,
 397                         'wgScriptPath' => $wgScriptPath,
 398                         'wgScriptExtension' => $wgScriptExtension,
 399                         'wgScript' => $wgScript,
 400                         'wgVariantArticlePath' => $wgVariantArticlePath,
 401                         'wgActionPaths' => (object)$wgActionPaths,
 402                         'wgServer' => $wgServer,
 403                         'wgCanonicalNamespace' => $nsname,
 404                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 405                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 406                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 407                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 408                         'wgTitle' => $wgTitle->getText(),
 409                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 410                         'wgArticleId' => $wgTitle->getArticleId(),
 411                         'wgIsArticle' => $wgOut->isArticle(),
 412                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 413                         'wgUserGroups' => $wgUser->isAnon() ? null : $wgUser->getEffectiveGroups(),
 414                         'wgUserLanguage' => $wgLang->getCode(),
 415                         'wgContentLanguage' => $wgContLang->getCode(),
 416                         'wgBreakFrames' => $wgBreakFrames,
 417                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 418                         'wgVersion' => $wgVersion,
 419                         'wgEnableAPI' => $wgEnableAPI,
 420                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 421                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
 422                         'wgDigitTransformTable' => $compactDigitTransTable,
 423                         'wgMainPageTitle' => $mainPage ? $mainPage->getPrefixedText() : null,
 424                         'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
 425                         'wgNamespaceIds' => $wgContLang->getNamespaceIds(),
 426                         'wgSiteName' => $wgSitename,
 427                         'wgCategories' => $wgOut->getCategories(),
 428                 );
 429                 if ( $wgContLang->hasVariants() ) {
 430                         $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
 431                 }
 432
 433                 // if on upload page output the extension list & js_upload
 434                 if( SpecialPage::resolveAlias( $wgTitle->getDBkey() ) == 'Upload' ) {
 435                         global $wgFileExtensions, $wgAjaxUploadInterface;
 436                         $vars['wgFileExtensions'] = $wgFileExtensions;
 437                 }
 438
 439                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 440                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 441                         $vars['wgDBname'] = $wgDBname;
 442                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 443                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 444                 }
 445
 446                 foreach( $wgRestrictionTypes as $type ) {
 447                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 448                 }
 449
 450                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 451                         $msgs = (object)array();
 452                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching',
 453                                 'tooltip-ca-watch', 'tooltip-ca-unwatch' ) as $msgName ) {
 454                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 455                         }
 456                         $vars['wgAjaxWatch'] = $msgs;
 457                 }
 458
 459                 // Allow extensions to add their custom variables to the global JS variables
 460                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 461
 462                 return self::makeVariablesScript( $vars );
 463         }
 464
 465         /**
 466          * To make it harder for someone to slip a user a fake
 467          * user-JavaScript or user-CSS preview, a random token
 468          * is associated with the login session. If it's not
 469          * passed back with the preview request, we won't render
 470          * the code.
 471          *
 472          * @param $action String: 'edit', 'submit' etc.
 473          * @return bool
 474          */
 475         public function userCanPreview( $action ) {
 476                 global $wgRequest, $wgUser;
 477
 478                 if( $action != 'submit' ) {
 479                         return false;
 480                 }
 481                 if( !$wgRequest->wasPosted() ) {
 482                         return false;
 483                 }
 484                 if( !$this->mTitle->userCanEditCssSubpage() ) {
 485                         return false;
 486                 }
 487                 if( !$this->mTitle->userCanEditJsSubpage() ) {
 488                         return false;
 489                 }
 490                 return $wgUser->matchEditToken(
 491                         $wgRequest->getVal( 'wpEditToken' ) );
 492         }
 493
 494         /**
 495          * Generated JavaScript action=raw&gen=js
 496          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 497          * nated together.  For some bizarre reason, it does *not* return any
 498          * custom user JS from subpages.  Huh?
 499          *
 500          * There's absolutely no reason to have separate Monobook/Common JSes.
 501          * Any JS that cares can just check the skin variable generated at the
 502          * top.  For now Monobook.js will be maintained, but it should be consi-
 503          * dered deprecated.
 504          *
 505          * @param $skinName String: If set, overrides the skin name
 506          * @return string
 507          */
 508         public function generateUserJs( $skinName = null ) {
 509                 global $wgStylePath;
 510
 511                 wfProfileIn( __METHOD__ );
 512                 if( !$skinName ) {
 513                         $skinName = $this->getSkinName();
 514                 }
 515
 516                 $s = "/* generated javascript */\n";
 517                 $s .= "var skin = '" . Xml::escapeJsString( $skinName ) . "';\n";
 518                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 519                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 520                 $commonJs = wfMsgExt( 'common.js', 'content' );
 521                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 522                         $s .= $commonJs;
 523                 }
 524
 525                 $s .= "\n\n/* MediaWiki:" . ucfirst( $skinName ) . ".js */\n";
 526                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 527                 // by checking for default message content
 528                 $msgKey = ucfirst( $skinName ) . '.js';
 529                 $userJS = wfMsgExt( $msgKey, 'content' );
 530                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 531                         $s .= $userJS;
 532                 }
 533
 534                 wfProfileOut( __METHOD__ );
 535                 return $s;
 536         }
 537
 538         /**
 539          * Generate user stylesheet for action=raw&gen=css
 540          */
 541         public function generateUserStylesheet() {
 542                 wfProfileIn( __METHOD__ );
 543                 $s = "/* generated user stylesheet */\n" .
 544                         $this->reallyGenerateUserStylesheet();
 545                 wfProfileOut( __METHOD__ );
 546                 return $s;
 547         }
 548
 549         /**
 550          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 551          */
 552         protected function reallyGenerateUserStylesheet() {
 553                 global $wgUser;
 554                 $s = '';
 555                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 556                         $underline = $undopt ? 'underline' : 'none';
 557                         $s .= "a { text-decoration: $underline; }\n";
 558                 }
 559                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 560                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 561                 } else {
 562                         $s .= <<<CSS
 563 a.new, #quickbar a.new,
 564 a.stub, #quickbar a.stub {
 565         color: inherit;
 566 }
 567 a.new:after, #quickbar a.new:after {
 568         content: "?";
 569         color: #CC2200;
 570 }
 571 a.stub:after, #quickbar a.stub:after {
 572         content: "!";
 573         color: #772233;
 574 }
 575 CSS;
 576                 }
 577                 if( $wgUser->getOption( 'justify' ) ) {
 578                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 579                 }
 580                 if( !$wgUser->getOption( 'showtoc' ) ) {
 581                         $s .= "#toc { display: none; }\n";
 582                 }
 583                 if( !$wgUser->getOption( 'editsection' ) ) {
 584                         $s .= ".editsection { display: none; }\n";
 585                 }
 586                 $fontstyle = $wgUser->getOption( 'editfont' );
 587                 if ( $fontstyle !== 'default' ) {
 588                         $s .= "textarea { font-family: $fontstyle; }\n";
 589                 }
 590                 return $s;
 591         }
 592
 593         /**
 594          * @private
 595          */
 596         function setupUserCss( OutputPage $out ) {
 597                 global $wgRequest, $wgContLang, $wgUser;
 598                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 599
 600                 wfProfileIn( __METHOD__ );
 601
 602                 $this->setupSkinUserCss( $out );
 603
 604                 $siteargs = array(
 605                         'action' => 'raw',
 606                         'maxage' => $wgSquidMaxage,
 607                 );
 608
 609                 // Add any extension CSS
 610                 foreach ( $out->getExtStyle() as $url ) {
 611                         $out->addStyle( $url );
 612                 }
 613
 614                 // If we use the site's dynamic CSS, throw that in, too
 615                 // Per-site custom styles
 616                 if( $wgUseSiteCss ) {
 617                         global $wgHandheldStyle;
 618                         $query = wfArrayToCGI( array(
 619                                 'usemsgcache' => 'yes',
 620                                 'ctype' => 'text/css',
 621                                 'smaxage' => $wgSquidMaxage
 622                         ) + $siteargs );
 623                         # Site settings must override extension css! (bug 15025)
 624                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 625                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 626                         if( $wgHandheldStyle ) {
 627                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 628                         }
 629                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 630                 }
 631
 632                 if( $wgUser->isLoggedIn() ) {
 633                         // Ensure that logged-in users' generated CSS isn't clobbered
 634                         // by anons' publicly cacheable generated CSS.
 635                         $siteargs['smaxage'] = '0';
 636                         $siteargs['ts'] = $wgUser->mTouched;
 637                 }
 638                 // Per-user styles based on preferences
 639                 $siteargs['gen'] = 'css';
 640                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 641                         $siteargs['useskin'] = $us;
 642                 }
 643                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 644
 645                 // Per-user custom style pages
 646                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 647                         $action = $wgRequest->getVal( 'action' );
 648                         # If we're previewing the CSS page, use it
 649                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 650                                 // @FIXME: properly escape the cdata!
 651                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 652                         } else {
 653                                 $names = array( 'common', $this->getSkinName() );
 654                                 foreach( $names as $name ) {
 655                                         $out->addStyle( self::makeUrl(
 656                                                 $this->userpage . '/' . $name . '.css',
 657                                                 'action=raw&ctype=text/css' )
 658                                         );
 659                                 }
 660                         }
 661                 }
 662
 663                 wfProfileOut( __METHOD__ );
 664         }
 665
 666         /**
 667          * Add skin specific stylesheets
 668          * @param $out OutputPage
 669          */
 670         function setupSkinUserCss( OutputPage $out ) {
 671                 $out->addStyle( 'common/shared.css' );
 672                 $out->addStyle( 'common/oldshared.css' );
 673                 $out->addStyle( $this->getStylesheet() );
 674                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 675         }
 676
 677         function getPageClasses( $title ) {
 678                 $numeric = 'ns-' . $title->getNamespace();
 679                 if( $title->getNamespace() == NS_SPECIAL ) {
 680                         $type = 'ns-special';
 681                 } elseif( $title->isTalkPage() ) {
 682                         $type = 'ns-talk';
 683                 } else {
 684                         $type = 'ns-subject';
 685                 }
 686                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 687                 return "$numeric $type $name";
 688         }
 689
 690         /**
 691          * URL to the logo
 692          */
 693         function getLogo() {
 694                 global $wgLogo;
 695                 return $wgLogo;
 696         }
 697
 698         /**
 699          * This will be called immediately after the <body> tag.  Split into
 700          * two functions to make it easier to subclass.
 701          */
 702         function beforeContent() {
 703                 return $this->doBeforeContent();
 704         }
 705
 706         function doBeforeContent() {
 707                 global $wgContLang;
 708                 wfProfileIn( __METHOD__ );
 709
 710                 $s = '';
 711                 $qb = $this->qbSetting();
 712
 713                 $langlinks = $this->otherLanguages();
 714                 if( $langlinks ) {
 715                         $rows = 2;
 716                         $borderhack = '';
 717                 } else {
 718                         $rows = 1;
 719                         $langlinks = false;
 720                         $borderhack = 'class="top"';
 721                 }
 722
 723                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 724                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 725
 726                 $shove = ( $qb != 0 );
 727                 $left = ( $qb == 1 || $qb == 3 );
 728                 if( $wgContLang->isRTL() ) {
 729                         $left = !$left;
 730                 }
 731
 732                 if( !$shove ) {
 733                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 734                                 $this->logoText() . '</td>';
 735                 } elseif( $left ) {
 736                         $s .= $this->getQuickbarCompensator( $rows );
 737                 }
 738                 $l = $wgContLang->alignStart();
 739                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 740
 741                 $s .= $this->topLinks();
 742                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 743
 744                 $r = $wgContLang->alignEnd();
 745                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 746                 $s .= $this->nameAndLogin();
 747                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 748
 749                 if ( $langlinks ) {
 750                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 751                 }
 752
 753                 if ( $shove && !$left ) { # Right
 754                         $s .= $this->getQuickbarCompensator( $rows );
 755                 }
 756                 $s .= "</tr>\n</table>\n</div>\n";
 757                 $s .= "\n<div id='article'>\n";
 758
 759                 $notice = wfGetSiteNotice();
 760                 if( $notice ) {
 761                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 762                 }
 763                 $s .= $this->pageTitle();
 764                 $s .= $this->pageSubtitle();
 765                 $s .= $this->getCategories();
 766                 wfProfileOut( __METHOD__ );
 767                 return $s;
 768         }
 769
 770         function getCategoryLinks() {
 771                 global $wgOut, $wgUseCategoryBrowser;
 772                 global $wgContLang, $wgUser;
 773
 774                 if( count( $wgOut->mCategoryLinks ) == 0 ) {
 775                         return '';
 776                 }
 777
 778                 # Separator
 779                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 780
 781                 // Use Unicode bidi embedding override characters,
 782                 // to make sure links don't smash each other up in ugly ways.
 783                 $dir = $wgContLang->getDir();
 784                 $embed = "<span dir='$dir'>";
 785                 $pop = '</span>';
 786
 787                 $allCats = $wgOut->getCategoryLinks();
 788                 $s = '';
 789                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 790                 if ( !empty( $allCats['normal'] ) ) {
 791                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 792
 793                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 794                         $s .= '<div id="mw-normal-catlinks">' .
 795                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 796                                 . $colon . $t . '</div>';
 797                 }
 798
 799                 # Hidden categories
 800                 if ( isset( $allCats['hidden'] ) ) {
 801                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 802                                 $class ='mw-hidden-cats-user-shown';
 803                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 804                                 $class = 'mw-hidden-cats-ns-shown';
 805                         } else {
 806                                 $class = 'mw-hidden-cats-hidden';
 807                         }
 808                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 809                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 810                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 811                                 '</div>';
 812                 }
 813
 814                 # optional 'dmoz-like' category browser. Will be shown under the list
 815                 # of categories an article belong to
 816                 if( $wgUseCategoryBrowser ) {
 817                         $s .= '<br /><hr />';
 818
 819                         # get a big array of the parents tree
 820                         $parenttree = $this->mTitle->getParentCategoryTree();
 821                         # Skin object passed by reference cause it can not be
 822                         # accessed under the method subfunction drawCategoryBrowser
 823                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 824                         # Clean out bogus first entry and sort them
 825                         unset( $tempout[0] );
 826                         asort( $tempout );
 827                         # Output one per line
 828                         $s .= implode( "<br />\n", $tempout );
 829                 }
 830
 831                 return $s;
 832         }
 833
 834         /**
 835          * Render the array as a serie of links.
 836          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 837          * @param &skin Object: skin passed by reference
 838          * @return String separated by &gt;, terminate with "\n"
 839          */
 840         function drawCategoryBrowser( $tree, &$skin ) {
 841                 $return = '';
 842                 foreach( $tree as $element => $parent ) {
 843                         if( empty( $parent ) ) {
 844                                 # element start a new list
 845                                 $return .= "\n";
 846                         } else {
 847                                 # grab the others elements
 848                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 849                         }
 850                         # add our current element to the list
 851                         $eltitle = Title::newFromText( $element );
 852                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 853                 }
 854                 return $return;
 855         }
 856
 857         function getCategories() {
 858                 $catlinks = $this->getCategoryLinks();
 859
 860                 $classes = 'catlinks';
 861
 862                 // Check what we're showing
 863                 global $wgOut, $wgUser;
 864                 $allCats = $wgOut->getCategoryLinks();
 865                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 866                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 867
 868                 if( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 869                         $classes .= ' catlinks-allhidden';
 870                 }
 871
 872                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 873         }
 874
 875         function getQuickbarCompensator( $rows = 1 ) {
 876                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 877         }
 878
 879         /**
 880          * This runs a hook to allow extensions placing their stuff after content
 881          * and article metadata (e.g. categories).
 882          * Note: This function has nothing to do with afterContent().
 883          *
 884          * This hook is placed here in order to allow using the same hook for all
 885          * skins, both the SkinTemplate based ones and the older ones, which directly
 886          * use this class to get their data.
 887          *
 888          * The output of this function gets processed in SkinTemplate::outputPage() for
 889          * the SkinTemplate based skins, all other skins should directly echo it.
 890          *
 891          * Returns an empty string by default, if not changed by any hook function.
 892          */
 893         protected function afterContentHook() {
 894                 $data = '';
 895
 896                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ) {
 897                         // adding just some spaces shouldn't toggle the output
 898                         // of the whole <div/>, so we use trim() here
 899                         if( trim( $data ) != '' ) {
 900                                 // Doing this here instead of in the skins to
 901                                 // ensure that the div has the same ID in all
 902                                 // skins
 903                                 $data = "<div id='mw-data-after-content'>\n" .
 904                                         "\t$data\n" .
 905                                         "</div>\n";
 906                         }
 907                 } else {
 908                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 909                 }
 910
 911                 return $data;
 912         }
 913
 914         /**
 915          * Generate debug data HTML for displaying at the bottom of the main content
 916          * area.
 917          * @return String HTML containing debug data, if enabled (otherwise empty).
 918          */
 919         protected function generateDebugHTML() {
 920                 global $wgShowDebug, $wgOut;
 921                 if ( $wgShowDebug ) {
 922                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 923                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 924                                 $listInternals . "</ul>\n";
 925                 }
 926                 return '';
 927         }
 928
 929         private function formatDebugHTML( $debugText ) {
 930                 $lines = explode( "\n", $debugText );
 931                 $curIdent = 0;
 932                 $ret = '<li>';
 933                 foreach( $lines as $line ) {
 934                         $m = array();
 935                         $display = ltrim( $line );
 936                         $ident = strlen( $line ) - strlen( $display );
 937                         $diff = $ident - $curIdent;
 938
 939                         if ( $display == '' ) {
 940                                 $display = "\xc2\xa0";
 941                         }
 942
 943                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 944                                 $ident = $curIdent;
 945                                 $diff = 0;
 946                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 947                         } else {
 948                                 $display = htmlspecialchars( $display );
 949                         }
 950
 951                         if ( $diff < 0 ) {
 952                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 953                         } elseif ( $diff == 0 ) {
 954                                 $ret .= "</li><li>\n";
 955                         } else {
 956                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 957                         }
 958                         $ret .= $display . "\n";
 959
 960                         $curIdent = $ident;
 961                 }
 962                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 963                 return $ret;
 964         }
 965
 966         /**
 967          * This gets called shortly before the </body> tag.
 968          * @return String HTML to be put before </body>
 969          */
 970         function afterContent() {
 971                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 972                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 973         }
 974
 975         /**
 976          * This gets called shortly before the </body> tag.
 977          * @return String HTML-wrapped JS code to be put before </body>
 978          */
 979         function bottomScripts() {
 980                 $bottomScriptText = "\n" . Html::inlineScript( 'if (window.runOnloadHook) runOnloadHook();' ) . "\n";
 981                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 982                 return $bottomScriptText;
 983         }
 984
 985         /** @return string Retrievied from HTML text */
 986         function printSource() {
 987                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 988                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 989         }
 990
 991         function printFooter() {
 992                 return "<p>" .  $this->printSource() .
 993                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 994         }
 995
 996         /** overloaded by derived classes */
 997         function doAfterContent() {
 998                 return '</div></div>';
 999         }
1000
1001         function pageTitleLinks() {
1002                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1003
1004                 $oldid = $wgRequest->getVal( 'oldid' );
1005                 $diff = $wgRequest->getVal( 'diff' );
1006                 $action = $wgRequest->getText( 'action' );
1007
1008                 $s[] = $this->printableLink();
1009                 $disclaimer = $this->disclaimerLink(); # may be empty
1010                 if( $disclaimer ) {
1011                         $s[] = $disclaimer;
1012                 }
1013                 $privacy = $this->privacyLink(); # may be empty too
1014                 if( $privacy ) {
1015                         $s[] = $privacy;
1016                 }
1017
1018                 if ( $wgOut->isArticleRelated() ) {
1019                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1020                                 $name = $this->mTitle->getDBkey();
1021                                 $image = wfFindFile( $this->mTitle );
1022                                 if( $image ) {
1023                                         $link = htmlspecialchars( $image->getURL() );
1024                                         $style = $this->getInternalLinkAttributes( $link, $name );
1025                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1026                                 }
1027                         }
1028                 }
1029                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1030                         $s[] .= $this->link(
1031                                         $this->mTitle,
1032                                         wfMsg( 'currentrev' ),
1033                                         array(),
1034                                         array(),
1035                                         array( 'known', 'noclasses' )
1036                         );
1037                 }
1038
1039                 if ( $wgUser->getNewtalk() ) {
1040                         # do not show "You have new messages" text when we are viewing our
1041                         # own talk page
1042                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1043                                 $tl = $this->link(
1044                                         $wgUser->getTalkPage(),
1045                                         wfMsgHtml( 'newmessageslink' ),
1046                                         array(),
1047                                         array( 'redirect' => 'no' ),
1048                                         array( 'known', 'noclasses' )
1049                                 );
1050
1051                                 $dl = $this->link(
1052                                         $wgUser->getTalkPage(),
1053                                         wfMsgHtml( 'newmessagesdifflink' ),
1054                                         array(),
1055                                         array( 'diff' => 'cur' ),
1056                                         array( 'known', 'noclasses' )
1057                                 );
1058                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1059                                 # disable caching
1060                                 $wgOut->setSquidMaxage( 0 );
1061                                 $wgOut->enableClientCache( false );
1062                         }
1063                 }
1064
1065                 $undelete = $this->getUndeleteLink();
1066                 if( !empty( $undelete ) ) {
1067                         $s[] = $undelete;
1068                 }
1069                 return $wgLang->pipeList( $s );
1070         }
1071
1072         function getUndeleteLink() {
1073                 global $wgUser, $wgContLang, $wgLang, $wgRequest;
1074
1075                 $action = $wgRequest->getVal( 'action', 'view' );
1076
1077                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1078                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1079                         $n = $this->mTitle->isDeleted();
1080                         if ( $n ) {
1081                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1082                                         $msg = 'thisisdeleted';
1083                                 } else {
1084                                         $msg = 'viewdeleted';
1085                                 }
1086                                 return wfMsg(
1087                                         $msg,
1088                                         $this->link(
1089                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1090                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1091                                                 array(),
1092                                                 array(),
1093                                                 array( 'known', 'noclasses' )
1094                                         )
1095                                 );
1096                         }
1097                 }
1098                 return '';
1099         }
1100
1101         function printableLink() {
1102                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1103
1104                 $s = array();
1105
1106                 if ( !$wgOut->isPrintable() ) {
1107                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1108                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1109                 }
1110
1111                 if( $wgOut->isSyndicated() ) {
1112                         foreach( $wgFeedClasses as $format => $class ) {
1113                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1114                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1115                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1116                         }
1117                 }
1118                 return $wgLang->pipeList( $s );
1119         }
1120
1121         /**
1122          * Gets the h1 element with the page title.
1123          * @return string
1124          */
1125         function pageTitle() {
1126                 global $wgOut;
1127                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1128                 return $s;
1129         }
1130
1131         function pageSubtitle() {
1132                 global $wgOut;
1133
1134                 $sub = $wgOut->getSubtitle();
1135                 if ( $sub == '' ) {
1136                         global $wgExtraSubtitle;
1137                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1138                 }
1139                 $subpages = $this->subPageSubtitle();
1140                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1141                 $s = "<p class='subtitle'>{$sub}</p>\n";
1142                 return $s;
1143         }
1144
1145         function subPageSubtitle() {
1146                 $subpages = '';
1147                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1148                         return $subpages;
1149                 }
1150
1151                 global $wgOut;
1152                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1153                         $ptext = $this->mTitle->getPrefixedText();
1154                         if( preg_match( '/\//', $ptext ) ) {
1155                                 $links = explode( '/', $ptext );
1156                                 array_pop( $links );
1157                                 $c = 0;
1158                                 $growinglink = '';
1159                                 $display = '';
1160                                 foreach( $links as $link ) {
1161                                         $growinglink .= $link;
1162                                         $display .= $link;
1163                                         $linkObj = Title::newFromText( $growinglink );
1164                                         if( is_object( $linkObj ) && $linkObj->exists() ) {
1165                                                 $getlink = $this->link(
1166                                                         $linkObj,
1167                                                         htmlspecialchars( $display ),
1168                                                         array(),
1169                                                         array(),
1170                                                         array( 'known', 'noclasses' )
1171                                                 );
1172                                                 $c++;
1173                                                 if( $c > 1 ) {
1174                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1175                                                 } else  {
1176                                                         $subpages .= '&lt; ';
1177                                                 }
1178                                                 $subpages .= $getlink;
1179                                                 $display = '';
1180                                         } else {
1181                                                 $display .= '/';
1182                                         }
1183                                         $growinglink .= '/';
1184                                 }
1185                         }
1186                 }
1187                 return $subpages;
1188         }
1189
1190         /**
1191          * Returns true if the IP should be shown in the header
1192          */
1193         function showIPinHeader() {
1194                 global $wgShowIPinHeader;
1195                 return $wgShowIPinHeader && session_id() != '';
1196         }
1197
1198         function nameAndLogin() {
1199                 global $wgUser, $wgLang, $wgContLang;
1200
1201                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1202
1203                 $ret = '';
1204                 if ( $wgUser->isAnon() ) {
1205                         if( $this->showIPinHeader() ) {
1206                                 $name = wfGetIP();
1207
1208                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1209                                         $wgLang->getNsText( NS_TALK ) );
1210
1211                                 $ret .= "$name ($talkLink)";
1212                         } else {
1213                                 $ret .= wfMsg( 'notloggedin' );
1214                         }
1215
1216                         $returnTo = $this->mTitle->getPrefixedDBkey();
1217                         $query = array();
1218                         if ( $logoutPage != $returnTo ) {
1219                                 $query['returnto'] = $returnTo;
1220                         }
1221
1222                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1223                                 ? 'nav-login-createaccount'
1224                                 : 'login';
1225                         $ret .= "\n<br />" . $this->link(
1226                                 SpecialPage::getTitleFor( 'Userlogin' ),
1227                                 wfMsg( $loginlink ), array(), $query
1228                         );
1229                 } else {
1230                         $returnTo = $this->mTitle->getPrefixedDBkey();
1231                         $talkLink = $this->link( $wgUser->getTalkPage(),
1232                                 $wgLang->getNsText( NS_TALK ) );
1233
1234                         $ret .= $this->link( $wgUser->getUserPage(),
1235                                 htmlspecialchars( $wgUser->getName() ) );
1236                         $ret .= " ($talkLink)<br />";
1237                         $ret .= $wgLang->pipeList( array(
1238                                 $this->link(
1239                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1240                                         array(), array( 'returnto' => $returnTo )
1241                                 ),
1242                                 $this->specialLink( 'preferences' ),
1243                         ) );
1244                 }
1245                 $ret = $wgLang->pipeList( array(
1246                         $ret,
1247                         $this->link(
1248                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1249                                 wfMsg( 'help' )
1250                         ),
1251                 ) );
1252
1253                 return $ret;
1254         }
1255
1256         function getSearchLink() {
1257                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1258                 return $searchPage->getLocalURL();
1259         }
1260
1261         function escapeSearchLink() {
1262                 return htmlspecialchars( $this->getSearchLink() );
1263         }
1264
1265         function searchForm() {
1266                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1267                 $search = $wgRequest->getText( 'search' );
1268
1269                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1270                   . $this->escapeSearchLink() . "\">\n"
1271                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1272                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1273                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1274
1275                 if( $wgUseTwoButtonsSearchForm ) {
1276                         $s .= '&nbsp;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1277                 } else {
1278                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1279                 }
1280
1281                 $s .= '</form>';
1282
1283                 // Ensure unique id's for search boxes made after the first
1284                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1285
1286                 return $s;
1287         }
1288
1289         function topLinks() {
1290                 global $wgOut;
1291
1292                 $s = array(
1293                         $this->mainPageLink(),
1294                         $this->specialLink( 'recentchanges' )
1295                 );
1296
1297                 if ( $wgOut->isArticleRelated() ) {
1298                         $s[] = $this->editThisPage();
1299                         $s[] = $this->historyLink();
1300                 }
1301                 # Many people don't like this dropdown box
1302                 #$s[] = $this->specialPagesList();
1303
1304                 if( $this->variantLinks() ) {
1305                         $s[] = $this->variantLinks();
1306                 }
1307
1308                 if( $this->extensionTabLinks() ) {
1309                         $s[] = $this->extensionTabLinks();
1310                 }
1311
1312                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1313                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1314         }
1315
1316         /**
1317          * Compatibility for extensions adding functionality through tabs.
1318          * Eventually these old skins should be replaced with SkinTemplate-based
1319          * versions, sigh...
1320          * @return string
1321          */
1322         function extensionTabLinks() {
1323                 $tabs = array();
1324                 $out = '';
1325                 $s = array();
1326                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1327                 foreach( $tabs as $tab ) {
1328                         $s[] = Xml::element( 'a',
1329                                 array( 'href' => $tab['href'] ),
1330                                 $tab['text'] );
1331                 }
1332
1333                 if( count( $s ) ) {
1334                         global $wgLang;
1335
1336                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1337                         $out .= $wgLang->pipeList( $s );
1338                 }
1339
1340                 return $out;
1341         }
1342
1343         /**
1344          * Language/charset variant links for classic-style skins
1345          * @return string
1346          */
1347         function variantLinks() {
1348                 $s = '';
1349                 /* show links to different language variants */
1350                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1351                 $variants = $wgContLang->getVariants();
1352                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1353                         foreach( $variants as $code ) {
1354                                 $varname = $wgContLang->getVariantname( $code );
1355                                 if( $varname == 'disable' ) {
1356                                         continue;
1357                                 }
1358                                 $s = $wgLang->pipeList( array(
1359                                         $s,
1360                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1361                                 ) );
1362                         }
1363                 }
1364                 return $s;
1365         }
1366
1367         function bottomLinks() {
1368                 global $wgOut, $wgUser, $wgUseTrackbacks;
1369                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1370
1371                 $s = '';
1372                 if ( $wgOut->isArticleRelated() ) {
1373                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1374                         if ( $wgUser->isLoggedIn() ) {
1375                                 $element[] = $this->watchThisPage();
1376                         }
1377                         $element[] = $this->talkLink();
1378                         $element[] = $this->historyLink();
1379                         $element[] = $this->whatLinksHere();
1380                         $element[] = $this->watchPageLinksLink();
1381
1382                         if( $wgUseTrackbacks ) {
1383                                 $element[] = $this->trackbackLink();
1384                         }
1385
1386                         if (
1387                                 $this->mTitle->getNamespace() == NS_USER ||
1388                                 $this->mTitle->getNamespace() == NS_USER_TALK
1389                         )
1390                         {
1391                                 $id = User::idFromName( $this->mTitle->getText() );
1392                                 $ip = User::isIP( $this->mTitle->getText() );
1393
1394                                 # Both anons and non-anons have contributions list
1395                                 if( $id || $ip ) {
1396                                         $element[] = $this->userContribsLink();
1397                                 }
1398                                 if( $this->showEmailUser( $id ) ) {
1399                                         $element[] = $this->emailUserLink();
1400                                 }
1401                         }
1402
1403                         $s = implode( $element, $sep );
1404
1405                         if ( $this->mTitle->getArticleId() ) {
1406                                 $s .= "\n<br />";
1407                                 // Delete/protect/move links for privileged users
1408                                 if( $wgUser->isAllowed( 'delete' ) ) {
1409                                         $s .= $this->deleteThisPage();
1410                                 }
1411                                 if( $wgUser->isAllowed( 'protect' ) ) {
1412                                         $s .= $sep . $this->protectThisPage();
1413                                 }
1414                                 if( $wgUser->isAllowed( 'move' ) ) {
1415                                         $s .= $sep . $this->moveThisPage();
1416                                 }
1417                         }
1418                         $s .= "<br />\n" . $this->otherLanguages();
1419                 }
1420
1421                 return $s;
1422         }
1423
1424         function pageStats() {
1425                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1426                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1427
1428                 $oldid = $wgRequest->getVal( 'oldid' );
1429                 $diff = $wgRequest->getVal( 'diff' );
1430                 if ( !$wgOut->isArticle() ) {
1431                         return '';
1432                 }
1433                 if( !$wgArticle instanceof Article ) {
1434                         return '';
1435                 }
1436                 if ( isset( $oldid ) || isset( $diff ) ) {
1437                         return '';
1438                 }
1439                 if ( 0 == $wgArticle->getID() ) {
1440                         return '';
1441                 }
1442
1443                 $s = '';
1444                 if ( !$wgDisableCounters ) {
1445                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1446                         if ( $count ) {
1447                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1448                         }
1449                 }
1450
1451                 if( $wgMaxCredits != 0 ) {
1452                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1453                 } else {
1454                         $s .= $this->lastModified();
1455                 }
1456
1457                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1458                         $dbr = wfGetDB( DB_SLAVE );
1459                         $res = $dbr->select(
1460                                 'watchlist',
1461                                 array( 'COUNT(*) AS n' ),
1462                                 array(
1463                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1464                                         'wl_namespace' => $this->mTitle->getNamespace()
1465                                 ),
1466                                 __METHOD__
1467                         );
1468                         $x = $dbr->fetchObject( $res );
1469
1470                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1471                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1472                         );
1473                 }
1474
1475                 return $s . ' ' .  $this->getCopyright();
1476         }
1477
1478         function getCopyright( $type = 'detect' ) {
1479                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1480
1481                 if ( $type == 'detect' ) {
1482                         $diff = $wgRequest->getVal( 'diff' );
1483                         $isCur = $wgArticle && $wgArticle->isCurrent();
1484                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1485                                 $type = 'history';
1486                         } else {
1487                                 $type = 'normal';
1488                         }
1489                 }
1490
1491                 if ( $type == 'history' ) {
1492                         $msg = 'history_copyright';
1493                 } else {
1494                         $msg = 'copyright';
1495                 }
1496
1497                 $out = '';
1498                 if( $wgRightsPage ) {
1499                         $title = Title::newFromText( $wgRightsPage );
1500                         $link = $this->linkKnown( $title, $wgRightsText );
1501                 } elseif( $wgRightsUrl ) {
1502                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1503                 } elseif( $wgRightsText ) {
1504                         $link = $wgRightsText;
1505                 } else {
1506                         # Give up now
1507                         return $out;
1508                 }
1509                 // Allow for site and per-namespace customization of copyright notice.
1510                 if( isset( $wgArticle ) ) {
1511                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link ) );
1512                 }
1513
1514                 $out .= wfMsgForContent( $msg, $link );
1515                 return $out;
1516         }
1517
1518         function getCopyrightIcon() {
1519                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1520                 $out = '';
1521                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1522                         $out = $wgCopyrightIcon;
1523                 } elseif ( $wgRightsIcon ) {
1524                         $icon = htmlspecialchars( $wgRightsIcon );
1525                         if ( $wgRightsUrl ) {
1526                                 $url = htmlspecialchars( $wgRightsUrl );
1527                                 $out .= '<a href="'.$url.'">';
1528                         }
1529                         $text = htmlspecialchars( $wgRightsText );
1530                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1531                         if ( $wgRightsUrl ) {
1532                                 $out .= '</a>';
1533                         }
1534                 }
1535                 return $out;
1536         }
1537
1538         /**
1539          * Gets the powered by MediaWiki icon.
1540          * @return string
1541          */
1542         function getPoweredBy() {
1543                 global $wgStylePath;
1544                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1545                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1546                 return $img;
1547         }
1548
1549         function lastModified() {
1550                 global $wgLang, $wgArticle;
1551                 if( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1552                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1553                 } else {
1554                         $timestamp = $wgArticle->getTimestamp();
1555                 }
1556                 if ( $timestamp ) {
1557                         $d = $wgLang->date( $timestamp, true );
1558                         $t = $wgLang->time( $timestamp, true );
1559                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1560                 } else {
1561                         $s = '';
1562                 }
1563                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1564                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1565                 }
1566                 return $s;
1567         }
1568
1569         function logoText( $align = '' ) {
1570                 if ( $align != '' ) {
1571                         $a = " align='{$align}'";
1572                 } else {
1573                         $a = '';
1574                 }
1575
1576                 $mp = wfMsg( 'mainpage' );
1577                 $mptitle = Title::newMainPage();
1578                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1579
1580                 $logourl = $this->getLogo();
1581                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1582                 return $s;
1583         }
1584
1585         /**
1586          * Show a drop-down box of special pages
1587          */
1588         function specialPagesList() {
1589                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1590                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1591                 foreach ( $pages as $name => $page ) {
1592                         $pages[$name] = $page->getDescription();
1593                 }
1594
1595                 $go = wfMsg( 'go' );
1596                 $sp = wfMsg( 'specialpages' );
1597                 $spp = $wgContLang->specialPage( 'Specialpages' );
1598
1599                 $s = '<form id="specialpages" method="get" ' .
1600                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1601                 $s .= "<select name=\"wpDropdown\">\n";
1602                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1603
1604
1605                 foreach ( $pages as $name => $desc ) {
1606                         $p = $wgContLang->specialPage( $name );
1607                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1608                 }
1609                 $s .= "</select>\n";
1610                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1611                 $s .= "</form>\n";
1612                 return $s;
1613         }
1614
1615         /**
1616          * Gets the link to the wiki's main page.
1617          * @return string
1618          */
1619         function mainPageLink() {
1620                 $s = $this->link(
1621                         Title::newMainPage(),
1622                         wfMsg( 'mainpage' ),
1623                         array(),
1624                         array(),
1625                         array( 'known', 'noclasses' )
1626                 );
1627                 return $s;
1628         }
1629
1630         private function footerLink( $desc, $page ) {
1631                 // if the link description has been set to "-" in the default language,
1632                 if ( wfMsgForContent( $desc )  == '-') {
1633                         // then it is disabled, for all languages.
1634                         return '';
1635                 } else {
1636                         // Otherwise, we display the link for the user, described in their
1637                         // language (which may or may not be the same as the default language),
1638                         // but we make the link target be the one site-wide page.
1639                         $title = Title::newFromText( wfMsgForContent( $page ) );
1640                         return $this->linkKnown(
1641                                 $title,
1642                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1643                         );
1644                 }
1645         }
1646
1647         /**
1648          * Gets the link to the wiki's privacy policy page.
1649          */
1650         function privacyLink() {
1651                 return $this->footerLink( 'privacy', 'privacypage' );
1652         }
1653
1654         /**
1655          * Gets the link to the wiki's about page.
1656          */
1657         function aboutLink() {
1658                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1659         }
1660
1661         /**
1662          * Gets the link to the wiki's general disclaimers page.
1663          */
1664         function disclaimerLink() {
1665                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1666         }
1667
1668         function editThisPage() {
1669                 global $wgOut;
1670
1671                 if ( !$wgOut->isArticleRelated() ) {
1672                         $s = wfMsg( 'protectedpage' );
1673                 } else {
1674                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1675                                 $t = wfMsg( 'editthispage' );
1676                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1677                                 $t = wfMsg( 'create-this-page' );
1678                         } else {
1679                                 $t = wfMsg( 'viewsource' );
1680                         }
1681
1682                         $s = $this->link(
1683                                 $this->mTitle,
1684                                 $t,
1685                                 array(),
1686                                 $this->editUrlOptions(),
1687                                 array( 'known', 'noclasses' )
1688                         );
1689                 }
1690                 return $s;
1691         }
1692
1693         /**
1694          * Return URL options for the 'edit page' link.
1695          * This may include an 'oldid' specifier, if the current page view is such.
1696          *
1697          * @return array
1698          * @private
1699          */
1700         function editUrlOptions() {
1701                 global $wgArticle;
1702
1703                 $options = array( 'action' => 'edit' );
1704
1705                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1706                         $options['oldid'] = intval( $this->mRevisionId );
1707                 }
1708
1709                 return $options;
1710         }
1711
1712         function deleteThisPage() {
1713                 global $wgUser, $wgRequest;
1714
1715                 $diff = $wgRequest->getVal( 'diff' );
1716                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1717                         $t = wfMsg( 'deletethispage' );
1718
1719                         $s = $this->link(
1720                                 $this->mTitle,
1721                                 $t,
1722                                 array(),
1723                                 array( 'action' => 'delete' ),
1724                                 array( 'known', 'noclasses' )
1725                         );
1726                 } else {
1727                         $s = '';
1728                 }
1729                 return $s;
1730         }
1731
1732         function protectThisPage() {
1733                 global $wgUser, $wgRequest;
1734
1735                 $diff = $wgRequest->getVal( 'diff' );
1736                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1737                         if ( $this->mTitle->isProtected() ) {
1738                                 $text = wfMsg( 'unprotectthispage' );
1739                                 $query = array( 'action' => 'unprotect' );
1740                         } else {
1741                                 $text = wfMsg( 'protectthispage' );
1742                                 $query = array( 'action' => 'protect' );
1743                         }
1744
1745                         $s = $this->link(
1746                                 $this->mTitle,
1747                                 $text,
1748                                 array(),
1749                                 $query,
1750                                 array( 'known', 'noclasses' )
1751                         );
1752                 } else {
1753                         $s = '';
1754                 }
1755                 return $s;
1756         }
1757
1758         function watchThisPage() {
1759                 global $wgOut;
1760                 ++$this->mWatchLinkNum;
1761
1762                 if ( $wgOut->isArticleRelated() ) {
1763                         if ( $this->mTitle->userIsWatching() ) {
1764                                 $text = wfMsg( 'unwatchthispage' );
1765                                 $query = array( 'action' => 'unwatch' );
1766                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1767                         } else {
1768                                 $text = wfMsg( 'watchthispage' );
1769                                 $query = array( 'action' => 'watch' );
1770                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1771                         }
1772
1773                         $s = $this->link(
1774                                 $this->mTitle,
1775                                 $text,
1776                                 array( 'id' => $id ),
1777                                 $query,
1778                                 array( 'known', 'noclasses' )
1779                         );
1780                 } else {
1781                         $s = wfMsg( 'notanarticle' );
1782                 }
1783                 return $s;
1784         }
1785
1786         function moveThisPage() {
1787                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1788                         return $this->link(
1789                                 SpecialPage::getTitleFor( 'Movepage' ),
1790                                 wfMsg( 'movethispage' ),
1791                                 array(),
1792                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1793                                 array( 'known', 'noclasses' )
1794                         );
1795                 } else {
1796                         // no message if page is protected - would be redundant
1797                         return '';
1798                 }
1799         }
1800
1801         function historyLink() {
1802                 return $this->link(
1803                         $this->mTitle,
1804                         wfMsgHtml( 'history' ),
1805                         array( 'rel' => 'archives' ),
1806                         array( 'action' => 'history' )
1807                 );
1808         }
1809
1810         function whatLinksHere() {
1811                 return $this->link(
1812                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1813                         wfMsgHtml( 'whatlinkshere' ),
1814                         array(),
1815                         array(),
1816                         array( 'known', 'noclasses' )
1817                 );
1818         }
1819
1820         function userContribsLink() {
1821                 return $this->link(
1822                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1823                         wfMsgHtml( 'contributions' ),
1824                         array(),
1825                         array(),
1826                         array( 'known', 'noclasses' )
1827                 );
1828         }
1829
1830         function showEmailUser( $id ) {
1831                 global $wgUser;
1832                 $targetUser = User::newFromId( $id );
1833                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1834                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1835         }
1836
1837         function emailUserLink() {
1838                 return $this->link(
1839                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1840                         wfMsg( 'emailuser' ),
1841                         array(),
1842                         array(),
1843                         array( 'known', 'noclasses' )
1844                 );
1845         }
1846
1847         function watchPageLinksLink() {
1848                 global $wgOut;
1849                 if ( !$wgOut->isArticleRelated() ) {
1850                         return '(' . wfMsg( 'notanarticle' ) . ')';
1851                 } else {
1852                         return $this->link(
1853                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1854                                 wfMsg( 'recentchangeslinked-toolbox' ),
1855                                 array(),
1856                                 array(),
1857                                 array( 'known', 'noclasses' )
1858                         );
1859                 }
1860         }
1861
1862         function trackbackLink() {
1863                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1864                         . wfMsg( 'trackbacklink' ) . '</a>';
1865         }
1866
1867         function otherLanguages() {
1868                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1869
1870                 if ( $wgHideInterlanguageLinks ) {
1871                         return '';
1872                 }
1873
1874                 $a = $wgOut->getLanguageLinks();
1875                 if ( 0 == count( $a ) ) {
1876                         return '';
1877                 }
1878
1879                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1880                 $first = true;
1881                 if( $wgContLang->isRTL() ) {
1882                         $s .= '<span dir="LTR">';
1883                 }
1884                 foreach( $a as $l ) {
1885                         if ( !$first ) {
1886                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1887                         }
1888                         $first = false;
1889
1890                         $nt = Title::newFromText( $l );
1891                         $url = $nt->escapeFullURL();
1892                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1893
1894                         if ( $text == '' ) {
1895                                 $text = $l;
1896                         }
1897                         $style = $this->getExternalLinkAttributes();
1898                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1899                 }
1900                 if( $wgContLang->isRTL() ) {
1901                         $s .= '</span>';
1902                 }
1903                 return $s;
1904         }
1905
1906         function talkLink() {
1907                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1908                         # No discussion links for special pages
1909                         return '';
1910                 }
1911
1912                 $linkOptions = array();
1913
1914                 if( $this->mTitle->isTalkPage() ) {
1915                         $link = $this->mTitle->getSubjectPage();
1916                         switch( $link->getNamespace() ) {
1917                                 case NS_MAIN:
1918                                         $text = wfMsg( 'articlepage' );
1919                                         break;
1920                                 case NS_USER:
1921                                         $text = wfMsg( 'userpage' );
1922                                         break;
1923                                 case NS_PROJECT:
1924                                         $text = wfMsg( 'projectpage' );
1925                                         break;
1926                                 case NS_FILE:
1927                                         $text = wfMsg( 'imagepage' );
1928                                         # Make link known if image exists, even if the desc. page doesn't.
1929                                         if( wfFindFile( $link ) )
1930                                                 $linkOptions[] = 'known';
1931                                         break;
1932                                 case NS_MEDIAWIKI:
1933                                         $text = wfMsg( 'mediawikipage' );
1934                                         break;
1935                                 case NS_TEMPLATE:
1936                                         $text = wfMsg( 'templatepage' );
1937                                         break;
1938                                 case NS_HELP:
1939                                         $text = wfMsg( 'viewhelppage' );
1940                                         break;
1941                                 case NS_CATEGORY:
1942                                         $text = wfMsg( 'categorypage' );
1943                                         break;
1944                                 default:
1945                                         $text = wfMsg( 'articlepage' );
1946                         }
1947                 } else {
1948                         $link = $this->mTitle->getTalkPage();
1949                         $text = wfMsg( 'talkpage' );
1950                 }
1951
1952                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1953
1954                 return $s;
1955         }
1956
1957         function commentLink() {
1958                 global $wgOut;
1959
1960                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1961                         return '';
1962                 }
1963
1964                 # __NEWSECTIONLINK___ changes behaviour here
1965                 # If it is present, the link points to this page, otherwise
1966                 # it points to the talk page
1967                 if( $this->mTitle->isTalkPage() ) {
1968                         $title = $this->mTitle;
1969                 } elseif( $wgOut->showNewSectionLink() ) {
1970                         $title = $this->mTitle;
1971                 } else {
1972                         $title = $this->mTitle->getTalkPage();
1973                 }
1974
1975                 return $this->link(
1976                         $title,
1977                         wfMsg( 'postcomment' ),
1978                         array(),
1979                         array(
1980                                 'action' => 'edit',
1981                                 'section' => 'new'
1982                         ),
1983                         array( 'known', 'noclasses' )
1984                 );
1985         }
1986
1987         /* these are used extensively in SkinTemplate, but also some other places */
1988         static function makeMainPageUrl( $urlaction = '' ) {
1989                 $title = Title::newMainPage();
1990                 self::checkTitle( $title, '' );
1991                 return $title->getLocalURL( $urlaction );
1992         }
1993
1994         static function makeSpecialUrl( $name, $urlaction = '' ) {
1995                 $title = SpecialPage::getTitleFor( $name );
1996                 return $title->getLocalURL( $urlaction );
1997         }
1998
1999         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2000                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2001                 return $title->getLocalURL( $urlaction );
2002         }
2003
2004         static function makeI18nUrl( $name, $urlaction = '' ) {
2005                 $title = Title::newFromText( wfMsgForContent( $name ) );
2006                 self::checkTitle( $title, $name );
2007                 return $title->getLocalURL( $urlaction );
2008         }
2009
2010         static function makeUrl( $name, $urlaction = '' ) {
2011                 $title = Title::newFromText( $name );
2012                 self::checkTitle( $title, $name );
2013                 return $title->getLocalURL( $urlaction );
2014         }
2015
2016         /**
2017          * If url string starts with http, consider as external URL, else
2018          * internal
2019          */
2020         static function makeInternalOrExternalUrl( $name ) {
2021                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2022                         return $name;
2023                 } else {
2024                         return self::makeUrl( $name );
2025                 }
2026         }
2027
2028         # this can be passed the NS number as defined in Language.php
2029         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2030                 $title = Title::makeTitleSafe( $namespace, $name );
2031                 self::checkTitle( $title, $name );
2032                 return $title->getLocalURL( $urlaction );
2033         }
2034
2035         /* these return an array with the 'href' and boolean 'exists' */
2036         static function makeUrlDetails( $name, $urlaction = '' ) {
2037                 $title = Title::newFromText( $name );
2038                 self::checkTitle( $title, $name );
2039                 return array(
2040                         'href' => $title->getLocalURL( $urlaction ),
2041                         'exists' => $title->getArticleID() != 0 ? true : false
2042                 );
2043         }
2044
2045         /**
2046          * Make URL details where the article exists (or at least it's convenient to think so)
2047          */
2048         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2049                 $title = Title::newFromText( $name );
2050                 self::checkTitle( $title, $name );
2051                 return array(
2052                         'href' => $title->getLocalURL( $urlaction ),
2053                         'exists' => true
2054                 );
2055         }
2056
2057         # make sure we have some title to operate on
2058         static function checkTitle( &$title, $name ) {
2059                 if( !is_object( $title ) ) {
2060                         $title = Title::newFromText( $name );
2061                         if( !is_object( $title ) ) {
2062                                 $title = Title::newFromText( '--error: link target missing--' );
2063                         }
2064                 }
2065         }
2066
2067         /**
2068          * Build an array that represents the sidebar(s), the navigation bar among them
2069          *
2070          * @return array
2071          */
2072         function buildSidebar() {
2073                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2074                 global $wgLang;
2075                 wfProfileIn( __METHOD__ );
2076
2077                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2078
2079                 if ( $wgEnableSidebarCache ) {
2080                         $cachedsidebar = $parserMemc->get( $key );
2081                         if ( $cachedsidebar ) {
2082                                 wfProfileOut( __METHOD__ );
2083                                 return $cachedsidebar;
2084                         }
2085                 }
2086
2087                 $bar = array();
2088                 $this->addToSidebar( $bar, 'sidebar' );
2089
2090                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2091                 if ( $wgEnableSidebarCache ) {
2092                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2093                 }
2094                 wfProfileOut( __METHOD__ );
2095                 return $bar;
2096         }
2097         /**
2098          * Add content from a sidebar system message
2099          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2100          *
2101          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2102          *
2103          * @param &$bar array
2104          * @param $message String
2105          */
2106         function addToSidebar( &$bar, $message ) {
2107                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2108         }
2109
2110         /**
2111          * Add content from plain text
2112          * @since 1.17
2113          * @param &$bar array
2114          * @param $text string
2115          */
2116         function addToSidebarPlain( &$bar, $text ) {
2117                 $lines = explode( "\n", $text );
2118                 $heading = '';
2119                 foreach( $lines as $line ) {
2120                         if( strpos( $line, '*' ) !== 0 ) {
2121                                 continue;
2122                         }
2123                         if( strpos( $line, '**') !== 0 ) {
2124                                 $heading = trim( $line, '* ' );
2125                                 if( !array_key_exists( $heading, $bar ) ) {
2126                                         $bar[$heading] = array();
2127                                 }
2128                         } else {
2129                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2130                                         $line = array_map( 'trim', explode( '|', trim( $line, '* ' ), 2 ) );
2131                                         $link = wfMsgForContent( $line[0] );
2132                                         if( $link == '-' ) {
2133                                                 continue;
2134                                         }
2135
2136                                         $text = wfMsgExt( $line[1], 'parsemag' );
2137                                         if( wfEmptyMsg( $line[1], $text ) ) {
2138                                                 $text = $line[1];
2139                                         }
2140                                         if( wfEmptyMsg( $line[0], $link ) ) {
2141                                                 $link = $line[0];
2142                                         }
2143
2144                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2145                                                 $href = $link;
2146                                         } else {
2147                                                 $title = Title::newFromText( $link );
2148                                                 if ( $title ) {
2149                                                         $title = $title->fixSpecialName();
2150                                                         $href = $title->getLocalURL();
2151                                                 } else {
2152                                                         $href = 'INVALID-TITLE';
2153                                                 }
2154                                         }
2155
2156                                         $bar[$heading][] = array(
2157                                                 'text' => $text,
2158                                                 'href' => $href,
2159                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2160                                                 'active' => false
2161                                         );
2162                                 } else {
2163                                         continue;
2164                                 }
2165                         }
2166                 }
2167         }
2168
2169         /**
2170          * Should we include common/wikiprintable.css?  Skins that have their own
2171          * print stylesheet should override this and return false.  (This is an
2172          * ugly hack to get Monobook to play nicely with
2173          * OutputPage::headElement().)
2174          *
2175          * @return bool
2176          */
2177         public function commonPrintStylesheet() {
2178                 return true;
2179         }
2180 }