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' => $wgOut->getFrameOptions() == 'DENY',
 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                                 $out->addStyle( self::makeUrl(
 654                                         $this->userpage . '/' . $this->getSkinName() . '.css',
 655                                         'action=raw&ctype=text/css' )
 656                                 );
 657                         }
 658                 }
 659
 660                 wfProfileOut( __METHOD__ );
 661         }
 662
 663         /**
 664          * Add skin specific stylesheets
 665          * @param $out OutputPage
 666          */
 667         function setupSkinUserCss( OutputPage $out ) {
 668                 $out->addStyle( 'common/shared.css' );
 669                 $out->addStyle( 'common/oldshared.css' );
 670                 $out->addStyle( $this->getStylesheet() );
 671                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 672         }
 673
 674         function getPageClasses( $title ) {
 675                 $numeric = 'ns-' . $title->getNamespace();
 676                 if( $title->getNamespace() == NS_SPECIAL ) {
 677                         $type = 'ns-special';
 678                 } elseif( $title->isTalkPage() ) {
 679                         $type = 'ns-talk';
 680                 } else {
 681                         $type = 'ns-subject';
 682                 }
 683                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 684                 return "$numeric $type $name";
 685         }
 686
 687         /**
 688          * URL to the logo
 689          */
 690         function getLogo() {
 691                 global $wgLogo;
 692                 return $wgLogo;
 693         }
 694
 695         /**
 696          * This will be called immediately after the <body> tag.  Split into
 697          * two functions to make it easier to subclass.
 698          */
 699         function beforeContent() {
 700                 return $this->doBeforeContent();
 701         }
 702
 703         function doBeforeContent() {
 704                 global $wgContLang;
 705                 wfProfileIn( __METHOD__ );
 706
 707                 $s = '';
 708                 $qb = $this->qbSetting();
 709
 710                 $langlinks = $this->otherLanguages();
 711                 if( $langlinks ) {
 712                         $rows = 2;
 713                         $borderhack = '';
 714                 } else {
 715                         $rows = 1;
 716                         $langlinks = false;
 717                         $borderhack = 'class="top"';
 718                 }
 719
 720                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 721                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 722
 723                 $shove = ( $qb != 0 );
 724                 $left = ( $qb == 1 || $qb == 3 );
 725                 if( $wgContLang->isRTL() ) {
 726                         $left = !$left;
 727                 }
 728
 729                 if( !$shove ) {
 730                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 731                                 $this->logoText() . '</td>';
 732                 } elseif( $left ) {
 733                         $s .= $this->getQuickbarCompensator( $rows );
 734                 }
 735                 $l = $wgContLang->alignStart();
 736                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 737
 738                 $s .= $this->topLinks();
 739                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 740
 741                 $r = $wgContLang->alignEnd();
 742                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 743                 $s .= $this->nameAndLogin();
 744                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 745
 746                 if ( $langlinks ) {
 747                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 748                 }
 749
 750                 if ( $shove && !$left ) { # Right
 751                         $s .= $this->getQuickbarCompensator( $rows );
 752                 }
 753                 $s .= "</tr>\n</table>\n</div>\n";
 754                 $s .= "\n<div id='article'>\n";
 755
 756                 $notice = wfGetSiteNotice();
 757                 if( $notice ) {
 758                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 759                 }
 760                 $s .= $this->pageTitle();
 761                 $s .= $this->pageSubtitle();
 762                 $s .= $this->getCategories();
 763                 wfProfileOut( __METHOD__ );
 764                 return $s;
 765         }
 766
 767         function getCategoryLinks() {
 768                 global $wgOut, $wgUseCategoryBrowser;
 769                 global $wgContLang, $wgUser;
 770
 771                 if( count( $wgOut->mCategoryLinks ) == 0 ) {
 772                         return '';
 773                 }
 774
 775                 # Separator
 776                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 777
 778                 // Use Unicode bidi embedding override characters,
 779                 // to make sure links don't smash each other up in ugly ways.
 780                 $dir = $wgContLang->getDir();
 781                 $embed = "<span dir='$dir'>";
 782                 $pop = '</span>';
 783
 784                 $allCats = $wgOut->getCategoryLinks();
 785                 $s = '';
 786                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 787                 if ( !empty( $allCats['normal'] ) ) {
 788                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 789
 790                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 791                         $s .= '<div id="mw-normal-catlinks">' .
 792                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 793                                 . $colon . $t . '</div>';
 794                 }
 795
 796                 # Hidden categories
 797                 if ( isset( $allCats['hidden'] ) ) {
 798                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 799                                 $class ='mw-hidden-cats-user-shown';
 800                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 801                                 $class = 'mw-hidden-cats-ns-shown';
 802                         } else {
 803                                 $class = 'mw-hidden-cats-hidden';
 804                         }
 805                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 806                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 807                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 808                                 '</div>';
 809                 }
 810
 811                 # optional 'dmoz-like' category browser. Will be shown under the list
 812                 # of categories an article belong to
 813                 if( $wgUseCategoryBrowser ) {
 814                         $s .= '<br /><hr />';
 815
 816                         # get a big array of the parents tree
 817                         $parenttree = $this->mTitle->getParentCategoryTree();
 818                         # Skin object passed by reference cause it can not be
 819                         # accessed under the method subfunction drawCategoryBrowser
 820                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 821                         # Clean out bogus first entry and sort them
 822                         unset( $tempout[0] );
 823                         asort( $tempout );
 824                         # Output one per line
 825                         $s .= implode( "<br />\n", $tempout );
 826                 }
 827
 828                 return $s;
 829         }
 830
 831         /**
 832          * Render the array as a serie of links.
 833          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 834          * @param &skin Object: skin passed by reference
 835          * @return String separated by &gt;, terminate with "\n"
 836          */
 837         function drawCategoryBrowser( $tree, &$skin ) {
 838                 $return = '';
 839                 foreach( $tree as $element => $parent ) {
 840                         if( empty( $parent ) ) {
 841                                 # element start a new list
 842                                 $return .= "\n";
 843                         } else {
 844                                 # grab the others elements
 845                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 846                         }
 847                         # add our current element to the list
 848                         $eltitle = Title::newFromText( $element );
 849                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 850                 }
 851                 return $return;
 852         }
 853
 854         function getCategories() {
 855                 $catlinks = $this->getCategoryLinks();
 856
 857                 $classes = 'catlinks';
 858
 859                 // Check what we're showing
 860                 global $wgOut, $wgUser;
 861                 $allCats = $wgOut->getCategoryLinks();
 862                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 863                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 864
 865                 if( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 866                         $classes .= ' catlinks-allhidden';
 867                 }
 868
 869                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 870         }
 871
 872         function getQuickbarCompensator( $rows = 1 ) {
 873                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 874         }
 875
 876         /**
 877          * This runs a hook to allow extensions placing their stuff after content
 878          * and article metadata (e.g. categories).
 879          * Note: This function has nothing to do with afterContent().
 880          *
 881          * This hook is placed here in order to allow using the same hook for all
 882          * skins, both the SkinTemplate based ones and the older ones, which directly
 883          * use this class to get their data.
 884          *
 885          * The output of this function gets processed in SkinTemplate::outputPage() for
 886          * the SkinTemplate based skins, all other skins should directly echo it.
 887          *
 888          * Returns an empty string by default, if not changed by any hook function.
 889          */
 890         protected function afterContentHook() {
 891                 $data = '';
 892
 893                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ) {
 894                         // adding just some spaces shouldn't toggle the output
 895                         // of the whole <div/>, so we use trim() here
 896                         if( trim( $data ) != '' ) {
 897                                 // Doing this here instead of in the skins to
 898                                 // ensure that the div has the same ID in all
 899                                 // skins
 900                                 $data = "<div id='mw-data-after-content'>\n" .
 901                                         "\t$data\n" .
 902                                         "</div>\n";
 903                         }
 904                 } else {
 905                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 906                 }
 907
 908                 return $data;
 909         }
 910
 911         /**
 912          * Generate debug data HTML for displaying at the bottom of the main content
 913          * area.
 914          * @return String HTML containing debug data, if enabled (otherwise empty).
 915          */
 916         protected function generateDebugHTML() {
 917                 global $wgShowDebug, $wgOut;
 918                 if ( $wgShowDebug ) {
 919                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 920                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 921                                 $listInternals . "</ul>\n";
 922                 }
 923                 return '';
 924         }
 925
 926         private function formatDebugHTML( $debugText ) {
 927                 $lines = explode( "\n", $debugText );
 928                 $curIdent = 0;
 929                 $ret = '<li>';
 930                 foreach( $lines as $line ) {
 931                         $m = array();
 932                         $display = ltrim( $line );
 933                         $ident = strlen( $line ) - strlen( $display );
 934                         $diff = $ident - $curIdent;
 935
 936                         if ( $display == '' ) {
 937                                 $display = "\xc2\xa0";
 938                         }
 939
 940                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 941                                 $ident = $curIdent;
 942                                 $diff = 0;
 943                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 944                         } else {
 945                                 $display = htmlspecialchars( $display );
 946                         }
 947
 948                         if ( $diff < 0 ) {
 949                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 950                         } elseif ( $diff == 0 ) {
 951                                 $ret .= "</li><li>\n";
 952                         } else {
 953                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 954                         }
 955                         $ret .= $display . "\n";
 956
 957                         $curIdent = $ident;
 958                 }
 959                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 960                 return $ret;
 961         }
 962
 963         /**
 964          * This gets called shortly before the </body> tag.
 965          * @return String HTML to be put before </body>
 966          */
 967         function afterContent() {
 968                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 969                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 970         }
 971
 972         /**
 973          * This gets called shortly before the </body> tag.
 974          * @return String HTML-wrapped JS code to be put before </body>
 975          */
 976         function bottomScripts() {
 977                 $bottomScriptText = "\n" . Html::inlineScript( 'if (window.runOnloadHook) runOnloadHook();' ) . "\n";
 978                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 979                 return $bottomScriptText;
 980         }
 981
 982         /** @return string Retrievied from HTML text */
 983         function printSource() {
 984                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 985                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 986         }
 987
 988         function printFooter() {
 989                 return "<p>" .  $this->printSource() .
 990                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 991         }
 992
 993         /** overloaded by derived classes */
 994         function doAfterContent() {
 995                 return '</div></div>';
 996         }
 997
 998         function pageTitleLinks() {
 999                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1000
1001                 $oldid = $wgRequest->getVal( 'oldid' );
1002                 $diff = $wgRequest->getVal( 'diff' );
1003                 $action = $wgRequest->getText( 'action' );
1004
1005                 $s[] = $this->printableLink();
1006                 $disclaimer = $this->disclaimerLink(); # may be empty
1007                 if( $disclaimer ) {
1008                         $s[] = $disclaimer;
1009                 }
1010                 $privacy = $this->privacyLink(); # may be empty too
1011                 if( $privacy ) {
1012                         $s[] = $privacy;
1013                 }
1014
1015                 if ( $wgOut->isArticleRelated() ) {
1016                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1017                                 $name = $this->mTitle->getDBkey();
1018                                 $image = wfFindFile( $this->mTitle );
1019                                 if( $image ) {
1020                                         $link = htmlspecialchars( $image->getURL() );
1021                                         $style = $this->getInternalLinkAttributes( $link, $name );
1022                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1023                                 }
1024                         }
1025                 }
1026                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1027                         $s[] .= $this->link(
1028                                         $this->mTitle,
1029                                         wfMsg( 'currentrev' ),
1030                                         array(),
1031                                         array(),
1032                                         array( 'known', 'noclasses' )
1033                         );
1034                 }
1035
1036                 if ( $wgUser->getNewtalk() ) {
1037                         # do not show "You have new messages" text when we are viewing our
1038                         # own talk page
1039                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1040                                 $tl = $this->link(
1041                                         $wgUser->getTalkPage(),
1042                                         wfMsgHtml( 'newmessageslink' ),
1043                                         array(),
1044                                         array( 'redirect' => 'no' ),
1045                                         array( 'known', 'noclasses' )
1046                                 );
1047
1048                                 $dl = $this->link(
1049                                         $wgUser->getTalkPage(),
1050                                         wfMsgHtml( 'newmessagesdifflink' ),
1051                                         array(),
1052                                         array( 'diff' => 'cur' ),
1053                                         array( 'known', 'noclasses' )
1054                                 );
1055                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1056                                 # disable caching
1057                                 $wgOut->setSquidMaxage( 0 );
1058                                 $wgOut->enableClientCache( false );
1059                         }
1060                 }
1061
1062                 $undelete = $this->getUndeleteLink();
1063                 if( !empty( $undelete ) ) {
1064                         $s[] = $undelete;
1065                 }
1066                 return $wgLang->pipeList( $s );
1067         }
1068
1069         function getUndeleteLink() {
1070                 global $wgUser, $wgContLang, $wgLang, $wgRequest;
1071
1072                 $action = $wgRequest->getVal( 'action', 'view' );
1073
1074                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1075                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1076                         $n = $this->mTitle->isDeleted();
1077                         if ( $n ) {
1078                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1079                                         $msg = 'thisisdeleted';
1080                                 } else {
1081                                         $msg = 'viewdeleted';
1082                                 }
1083                                 return wfMsg(
1084                                         $msg,
1085                                         $this->link(
1086                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1087                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1088                                                 array(),
1089                                                 array(),
1090                                                 array( 'known', 'noclasses' )
1091                                         )
1092                                 );
1093                         }
1094                 }
1095                 return '';
1096         }
1097
1098         function printableLink() {
1099                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1100
1101                 $s = array();
1102
1103                 if ( !$wgOut->isPrintable() ) {
1104                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1105                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1106                 }
1107
1108                 if( $wgOut->isSyndicated() ) {
1109                         foreach( $wgFeedClasses as $format => $class ) {
1110                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1111                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1112                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1113                         }
1114                 }
1115                 return $wgLang->pipeList( $s );
1116         }
1117
1118         /**
1119          * Gets the h1 element with the page title.
1120          * @return string
1121          */
1122         function pageTitle() {
1123                 global $wgOut;
1124                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1125                 return $s;
1126         }
1127
1128         function pageSubtitle() {
1129                 global $wgOut;
1130
1131                 $sub = $wgOut->getSubtitle();
1132                 if ( $sub == '' ) {
1133                         global $wgExtraSubtitle;
1134                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1135                 }
1136                 $subpages = $this->subPageSubtitle();
1137                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1138                 $s = "<p class='subtitle'>{$sub}</p>\n";
1139                 return $s;
1140         }
1141
1142         function subPageSubtitle() {
1143                 $subpages = '';
1144                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1145                         return $subpages;
1146                 }
1147
1148                 global $wgOut;
1149                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1150                         $ptext = $this->mTitle->getPrefixedText();
1151                         if( preg_match( '/\//', $ptext ) ) {
1152                                 $links = explode( '/', $ptext );
1153                                 array_pop( $links );
1154                                 $c = 0;
1155                                 $growinglink = '';
1156                                 $display = '';
1157                                 foreach( $links as $link ) {
1158                                         $growinglink .= $link;
1159                                         $display .= $link;
1160                                         $linkObj = Title::newFromText( $growinglink );
1161                                         if( is_object( $linkObj ) && $linkObj->exists() ) {
1162                                                 $getlink = $this->link(
1163                                                         $linkObj,
1164                                                         htmlspecialchars( $display ),
1165                                                         array(),
1166                                                         array(),
1167                                                         array( 'known', 'noclasses' )
1168                                                 );
1169                                                 $c++;
1170                                                 if( $c > 1 ) {
1171                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1172                                                 } else  {
1173                                                         $subpages .= '&lt; ';
1174                                                 }
1175                                                 $subpages .= $getlink;
1176                                                 $display = '';
1177                                         } else {
1178                                                 $display .= '/';
1179                                         }
1180                                         $growinglink .= '/';
1181                                 }
1182                         }
1183                 }
1184                 return $subpages;
1185         }
1186
1187         /**
1188          * Returns true if the IP should be shown in the header
1189          */
1190         function showIPinHeader() {
1191                 global $wgShowIPinHeader;
1192                 return $wgShowIPinHeader && session_id() != '';
1193         }
1194
1195         function nameAndLogin() {
1196                 global $wgUser, $wgLang, $wgContLang;
1197
1198                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1199
1200                 $ret = '';
1201                 if ( $wgUser->isAnon() ) {
1202                         if( $this->showIPinHeader() ) {
1203                                 $name = wfGetIP();
1204
1205                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1206                                         $wgLang->getNsText( NS_TALK ) );
1207
1208                                 $ret .= "$name ($talkLink)";
1209                         } else {
1210                                 $ret .= wfMsg( 'notloggedin' );
1211                         }
1212
1213                         $returnTo = $this->mTitle->getPrefixedDBkey();
1214                         $query = array();
1215                         if ( $logoutPage != $returnTo ) {
1216                                 $query['returnto'] = $returnTo;
1217                         }
1218
1219                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1220                                 ? 'nav-login-createaccount'
1221                                 : 'login';
1222                         $ret .= "\n<br />" . $this->link(
1223                                 SpecialPage::getTitleFor( 'Userlogin' ),
1224                                 wfMsg( $loginlink ), array(), $query
1225                         );
1226                 } else {
1227                         $returnTo = $this->mTitle->getPrefixedDBkey();
1228                         $talkLink = $this->link( $wgUser->getTalkPage(),
1229                                 $wgLang->getNsText( NS_TALK ) );
1230
1231                         $ret .= $this->link( $wgUser->getUserPage(),
1232                                 htmlspecialchars( $wgUser->getName() ) );
1233                         $ret .= " ($talkLink)<br />";
1234                         $ret .= $wgLang->pipeList( array(
1235                                 $this->link(
1236                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1237                                         array(), array( 'returnto' => $returnTo )
1238                                 ),
1239                                 $this->specialLink( 'preferences' ),
1240                         ) );
1241                 }
1242                 $ret = $wgLang->pipeList( array(
1243                         $ret,
1244                         $this->link(
1245                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1246                                 wfMsg( 'help' )
1247                         ),
1248                 ) );
1249
1250                 return $ret;
1251         }
1252
1253         function getSearchLink() {
1254                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1255                 return $searchPage->getLocalURL();
1256         }
1257
1258         function escapeSearchLink() {
1259                 return htmlspecialchars( $this->getSearchLink() );
1260         }
1261
1262         function searchForm() {
1263                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1264                 $search = $wgRequest->getText( 'search' );
1265
1266                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1267                   . $this->escapeSearchLink() . "\">\n"
1268                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1269                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1270                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1271
1272                 if( $wgUseTwoButtonsSearchForm ) {
1273                         $s .= '&nbsp;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1274                 } else {
1275                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1276                 }
1277
1278                 $s .= '</form>';
1279
1280                 // Ensure unique id's for search boxes made after the first
1281                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1282
1283                 return $s;
1284         }
1285
1286         function topLinks() {
1287                 global $wgOut;
1288
1289                 $s = array(
1290                         $this->mainPageLink(),
1291                         $this->specialLink( 'recentchanges' )
1292                 );
1293
1294                 if ( $wgOut->isArticleRelated() ) {
1295                         $s[] = $this->editThisPage();
1296                         $s[] = $this->historyLink();
1297                 }
1298                 # Many people don't like this dropdown box
1299                 #$s[] = $this->specialPagesList();
1300
1301                 if( $this->variantLinks() ) {
1302                         $s[] = $this->variantLinks();
1303                 }
1304
1305                 if( $this->extensionTabLinks() ) {
1306                         $s[] = $this->extensionTabLinks();
1307                 }
1308
1309                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1310                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1311         }
1312
1313         /**
1314          * Compatibility for extensions adding functionality through tabs.
1315          * Eventually these old skins should be replaced with SkinTemplate-based
1316          * versions, sigh...
1317          * @return string
1318          */
1319         function extensionTabLinks() {
1320                 $tabs = array();
1321                 $out = '';
1322                 $s = array();
1323                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1324                 foreach( $tabs as $tab ) {
1325                         $s[] = Xml::element( 'a',
1326                                 array( 'href' => $tab['href'] ),
1327                                 $tab['text'] );
1328                 }
1329
1330                 if( count( $s ) ) {
1331                         global $wgLang;
1332
1333                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1334                         $out .= $wgLang->pipeList( $s );
1335                 }
1336
1337                 return $out;
1338         }
1339
1340         /**
1341          * Language/charset variant links for classic-style skins
1342          * @return string
1343          */
1344         function variantLinks() {
1345                 $s = '';
1346                 /* show links to different language variants */
1347                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1348                 $variants = $wgContLang->getVariants();
1349                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1350                         foreach( $variants as $code ) {
1351                                 $varname = $wgContLang->getVariantname( $code );
1352                                 if( $varname == 'disable' ) {
1353                                         continue;
1354                                 }
1355                                 $s = $wgLang->pipeList( array(
1356                                         $s,
1357                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1358                                 ) );
1359                         }
1360                 }
1361                 return $s;
1362         }
1363
1364         function bottomLinks() {
1365                 global $wgOut, $wgUser, $wgUseTrackbacks;
1366                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1367
1368                 $s = '';
1369                 if ( $wgOut->isArticleRelated() ) {
1370                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1371                         if ( $wgUser->isLoggedIn() ) {
1372                                 $element[] = $this->watchThisPage();
1373                         }
1374                         $element[] = $this->talkLink();
1375                         $element[] = $this->historyLink();
1376                         $element[] = $this->whatLinksHere();
1377                         $element[] = $this->watchPageLinksLink();
1378
1379                         if( $wgUseTrackbacks ) {
1380                                 $element[] = $this->trackbackLink();
1381                         }
1382
1383                         if (
1384                                 $this->mTitle->getNamespace() == NS_USER ||
1385                                 $this->mTitle->getNamespace() == NS_USER_TALK
1386                         )
1387                         {
1388                                 $id = User::idFromName( $this->mTitle->getText() );
1389                                 $ip = User::isIP( $this->mTitle->getText() );
1390
1391                                 # Both anons and non-anons have contributions list
1392                                 if( $id || $ip ) {
1393                                         $element[] = $this->userContribsLink();
1394                                 }
1395                                 if( $this->showEmailUser( $id ) ) {
1396                                         $element[] = $this->emailUserLink();
1397                                 }
1398                         }
1399
1400                         $s = implode( $element, $sep );
1401
1402                         if ( $this->mTitle->getArticleId() ) {
1403                                 $s .= "\n<br />";
1404                                 // Delete/protect/move links for privileged users
1405                                 if( $wgUser->isAllowed( 'delete' ) ) {
1406                                         $s .= $this->deleteThisPage();
1407                                 }
1408                                 if( $wgUser->isAllowed( 'protect' ) ) {
1409                                         $s .= $sep . $this->protectThisPage();
1410                                 }
1411                                 if( $wgUser->isAllowed( 'move' ) ) {
1412                                         $s .= $sep . $this->moveThisPage();
1413                                 }
1414                         }
1415                         $s .= "<br />\n" . $this->otherLanguages();
1416                 }
1417
1418                 return $s;
1419         }
1420
1421         function pageStats() {
1422                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1423                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1424
1425                 $oldid = $wgRequest->getVal( 'oldid' );
1426                 $diff = $wgRequest->getVal( 'diff' );
1427                 if ( !$wgOut->isArticle() ) {
1428                         return '';
1429                 }
1430                 if( !$wgArticle instanceof Article ) {
1431                         return '';
1432                 }
1433                 if ( isset( $oldid ) || isset( $diff ) ) {
1434                         return '';
1435                 }
1436                 if ( 0 == $wgArticle->getID() ) {
1437                         return '';
1438                 }
1439
1440                 $s = '';
1441                 if ( !$wgDisableCounters ) {
1442                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1443                         if ( $count ) {
1444                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1445                         }
1446                 }
1447
1448                 if( $wgMaxCredits != 0 ) {
1449                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1450                 } else {
1451                         $s .= $this->lastModified();
1452                 }
1453
1454                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1455                         $dbr = wfGetDB( DB_SLAVE );
1456                         $res = $dbr->select(
1457                                 'watchlist',
1458                                 array( 'COUNT(*) AS n' ),
1459                                 array(
1460                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1461                                         'wl_namespace' => $this->mTitle->getNamespace()
1462                                 ),
1463                                 __METHOD__
1464                         );
1465                         $x = $dbr->fetchObject( $res );
1466
1467                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1468                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1469                         );
1470                 }
1471
1472                 return $s . ' ' .  $this->getCopyright();
1473         }
1474
1475         function getCopyright( $type = 'detect' ) {
1476                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1477
1478                 if ( $type == 'detect' ) {
1479                         $diff = $wgRequest->getVal( 'diff' );
1480                         $isCur = $wgArticle && $wgArticle->isCurrent();
1481                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1482                                 $type = 'history';
1483                         } else {
1484                                 $type = 'normal';
1485                         }
1486                 }
1487
1488                 if ( $type == 'history' ) {
1489                         $msg = 'history_copyright';
1490                 } else {
1491                         $msg = 'copyright';
1492                 }
1493
1494                 $out = '';
1495                 if( $wgRightsPage ) {
1496                         $title = Title::newFromText( $wgRightsPage );
1497                         $link = $this->linkKnown( $title, $wgRightsText );
1498                 } elseif( $wgRightsUrl ) {
1499                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1500                 } elseif( $wgRightsText ) {
1501                         $link = $wgRightsText;
1502                 } else {
1503                         # Give up now
1504                         return $out;
1505                 }
1506                 // Allow for site and per-namespace customization of copyright notice.
1507                 if( isset( $wgArticle ) ) {
1508                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link ) );
1509                 }
1510
1511                 $out .= wfMsgForContent( $msg, $link );
1512                 return $out;
1513         }
1514
1515         function getCopyrightIcon() {
1516                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1517                 $out = '';
1518                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1519                         $out = $wgCopyrightIcon;
1520                 } elseif ( $wgRightsIcon ) {
1521                         $icon = htmlspecialchars( $wgRightsIcon );
1522                         if ( $wgRightsUrl ) {
1523                                 $url = htmlspecialchars( $wgRightsUrl );
1524                                 $out .= '<a href="'.$url.'">';
1525                         }
1526                         $text = htmlspecialchars( $wgRightsText );
1527                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1528                         if ( $wgRightsUrl ) {
1529                                 $out .= '</a>';
1530                         }
1531                 }
1532                 return $out;
1533         }
1534
1535         /**
1536          * Gets the powered by MediaWiki icon.
1537          * @return string
1538          */
1539         function getPoweredBy() {
1540                 global $wgStylePath;
1541                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1542                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1543                 return $img;
1544         }
1545
1546         function lastModified() {
1547                 global $wgLang, $wgArticle;
1548                 if( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1549                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1550                 } else {
1551                         $timestamp = $wgArticle->getTimestamp();
1552                 }
1553                 if ( $timestamp ) {
1554                         $d = $wgLang->date( $timestamp, true );
1555                         $t = $wgLang->time( $timestamp, true );
1556                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1557                 } else {
1558                         $s = '';
1559                 }
1560                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1561                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1562                 }
1563                 return $s;
1564         }
1565
1566         function logoText( $align = '' ) {
1567                 if ( $align != '' ) {
1568                         $a = " align='{$align}'";
1569                 } else {
1570                         $a = '';
1571                 }
1572
1573                 $mp = wfMsg( 'mainpage' );
1574                 $mptitle = Title::newMainPage();
1575                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1576
1577                 $logourl = $this->getLogo();
1578                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1579                 return $s;
1580         }
1581
1582         /**
1583          * Show a drop-down box of special pages
1584          */
1585         function specialPagesList() {
1586                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1587                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1588                 foreach ( $pages as $name => $page ) {
1589                         $pages[$name] = $page->getDescription();
1590                 }
1591
1592                 $go = wfMsg( 'go' );
1593                 $sp = wfMsg( 'specialpages' );
1594                 $spp = $wgContLang->specialPage( 'Specialpages' );
1595
1596                 $s = '<form id="specialpages" method="get" ' .
1597                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1598                 $s .= "<select name=\"wpDropdown\">\n";
1599                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1600
1601
1602                 foreach ( $pages as $name => $desc ) {
1603                         $p = $wgContLang->specialPage( $name );
1604                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1605                 }
1606                 $s .= "</select>\n";
1607                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1608                 $s .= "</form>\n";
1609                 return $s;
1610         }
1611
1612         /**
1613          * Gets the link to the wiki's main page.
1614          * @return string
1615          */
1616         function mainPageLink() {
1617                 $s = $this->link(
1618                         Title::newMainPage(),
1619                         wfMsg( 'mainpage' ),
1620                         array(),
1621                         array(),
1622                         array( 'known', 'noclasses' )
1623                 );
1624                 return $s;
1625         }
1626
1627         private function footerLink( $desc, $page ) {
1628                 // if the link description has been set to "-" in the default language,
1629                 if ( wfMsgForContent( $desc )  == '-') {
1630                         // then it is disabled, for all languages.
1631                         return '';
1632                 } else {
1633                         // Otherwise, we display the link for the user, described in their
1634                         // language (which may or may not be the same as the default language),
1635                         // but we make the link target be the one site-wide page.
1636                         $title = Title::newFromText( wfMsgForContent( $page ) );
1637                         return $this->linkKnown(
1638                                 $title,
1639                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1640                         );
1641                 }
1642         }
1643
1644         /**
1645          * Gets the link to the wiki's privacy policy page.
1646          */
1647         function privacyLink() {
1648                 return $this->footerLink( 'privacy', 'privacypage' );
1649         }
1650
1651         /**
1652          * Gets the link to the wiki's about page.
1653          */
1654         function aboutLink() {
1655                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1656         }
1657
1658         /**
1659          * Gets the link to the wiki's general disclaimers page.
1660          */
1661         function disclaimerLink() {
1662                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1663         }
1664
1665         function editThisPage() {
1666                 global $wgOut;
1667
1668                 if ( !$wgOut->isArticleRelated() ) {
1669                         $s = wfMsg( 'protectedpage' );
1670                 } else {
1671                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1672                                 $t = wfMsg( 'editthispage' );
1673                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1674                                 $t = wfMsg( 'create-this-page' );
1675                         } else {
1676                                 $t = wfMsg( 'viewsource' );
1677                         }
1678
1679                         $s = $this->link(
1680                                 $this->mTitle,
1681                                 $t,
1682                                 array(),
1683                                 $this->editUrlOptions(),
1684                                 array( 'known', 'noclasses' )
1685                         );
1686                 }
1687                 return $s;
1688         }
1689
1690         /**
1691          * Return URL options for the 'edit page' link.
1692          * This may include an 'oldid' specifier, if the current page view is such.
1693          *
1694          * @return array
1695          * @private
1696          */
1697         function editUrlOptions() {
1698                 global $wgArticle;
1699
1700                 $options = array( 'action' => 'edit' );
1701
1702                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1703                         $options['oldid'] = intval( $this->mRevisionId );
1704                 }
1705
1706                 return $options;
1707         }
1708
1709         function deleteThisPage() {
1710                 global $wgUser, $wgRequest;
1711
1712                 $diff = $wgRequest->getVal( 'diff' );
1713                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1714                         $t = wfMsg( 'deletethispage' );
1715
1716                         $s = $this->link(
1717                                 $this->mTitle,
1718                                 $t,
1719                                 array(),
1720                                 array( 'action' => 'delete' ),
1721                                 array( 'known', 'noclasses' )
1722                         );
1723                 } else {
1724                         $s = '';
1725                 }
1726                 return $s;
1727         }
1728
1729         function protectThisPage() {
1730                 global $wgUser, $wgRequest;
1731
1732                 $diff = $wgRequest->getVal( 'diff' );
1733                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1734                         if ( $this->mTitle->isProtected() ) {
1735                                 $text = wfMsg( 'unprotectthispage' );
1736                                 $query = array( 'action' => 'unprotect' );
1737                         } else {
1738                                 $text = wfMsg( 'protectthispage' );
1739                                 $query = array( 'action' => 'protect' );
1740                         }
1741
1742                         $s = $this->link(
1743                                 $this->mTitle,
1744                                 $text,
1745                                 array(),
1746                                 $query,
1747                                 array( 'known', 'noclasses' )
1748                         );
1749                 } else {
1750                         $s = '';
1751                 }
1752                 return $s;
1753         }
1754
1755         function watchThisPage() {
1756                 global $wgOut;
1757                 ++$this->mWatchLinkNum;
1758
1759                 if ( $wgOut->isArticleRelated() ) {
1760                         if ( $this->mTitle->userIsWatching() ) {
1761                                 $text = wfMsg( 'unwatchthispage' );
1762                                 $query = array( 'action' => 'unwatch' );
1763                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1764                         } else {
1765                                 $text = wfMsg( 'watchthispage' );
1766                                 $query = array( 'action' => 'watch' );
1767                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1768                         }
1769
1770                         $s = $this->link(
1771                                 $this->mTitle,
1772                                 $text,
1773                                 array( 'id' => $id ),
1774                                 $query,
1775                                 array( 'known', 'noclasses' )
1776                         );
1777                 } else {
1778                         $s = wfMsg( 'notanarticle' );
1779                 }
1780                 return $s;
1781         }
1782
1783         function moveThisPage() {
1784                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1785                         return $this->link(
1786                                 SpecialPage::getTitleFor( 'Movepage' ),
1787                                 wfMsg( 'movethispage' ),
1788                                 array(),
1789                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1790                                 array( 'known', 'noclasses' )
1791                         );
1792                 } else {
1793                         // no message if page is protected - would be redundant
1794                         return '';
1795                 }
1796         }
1797
1798         function historyLink() {
1799                 return $this->link(
1800                         $this->mTitle,
1801                         wfMsgHtml( 'history' ),
1802                         array( 'rel' => 'archives' ),
1803                         array( 'action' => 'history' )
1804                 );
1805         }
1806
1807         function whatLinksHere() {
1808                 return $this->link(
1809                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1810                         wfMsgHtml( 'whatlinkshere' ),
1811                         array(),
1812                         array(),
1813                         array( 'known', 'noclasses' )
1814                 );
1815         }
1816
1817         function userContribsLink() {
1818                 return $this->link(
1819                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1820                         wfMsgHtml( 'contributions' ),
1821                         array(),
1822                         array(),
1823                         array( 'known', 'noclasses' )
1824                 );
1825         }
1826
1827         function showEmailUser( $id ) {
1828                 global $wgUser;
1829                 $targetUser = User::newFromId( $id );
1830                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1831                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1832         }
1833
1834         function emailUserLink() {
1835                 return $this->link(
1836                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1837                         wfMsg( 'emailuser' ),
1838                         array(),
1839                         array(),
1840                         array( 'known', 'noclasses' )
1841                 );
1842         }
1843
1844         function watchPageLinksLink() {
1845                 global $wgOut;
1846                 if ( !$wgOut->isArticleRelated() ) {
1847                         return '(' . wfMsg( 'notanarticle' ) . ')';
1848                 } else {
1849                         return $this->link(
1850                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1851                                 wfMsg( 'recentchangeslinked-toolbox' ),
1852                                 array(),
1853                                 array(),
1854                                 array( 'known', 'noclasses' )
1855                         );
1856                 }
1857         }
1858
1859         function trackbackLink() {
1860                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1861                         . wfMsg( 'trackbacklink' ) . '</a>';
1862         }
1863
1864         function otherLanguages() {
1865                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1866
1867                 if ( $wgHideInterlanguageLinks ) {
1868                         return '';
1869                 }
1870
1871                 $a = $wgOut->getLanguageLinks();
1872                 if ( 0 == count( $a ) ) {
1873                         return '';
1874                 }
1875
1876                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1877                 $first = true;
1878                 if( $wgContLang->isRTL() ) {
1879                         $s .= '<span dir="LTR">';
1880                 }
1881                 foreach( $a as $l ) {
1882                         if ( !$first ) {
1883                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1884                         }
1885                         $first = false;
1886
1887                         $nt = Title::newFromText( $l );
1888                         $url = $nt->escapeFullURL();
1889                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1890
1891                         if ( $text == '' ) {
1892                                 $text = $l;
1893                         }
1894                         $style = $this->getExternalLinkAttributes();
1895                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1896                 }
1897                 if( $wgContLang->isRTL() ) {
1898                         $s .= '</span>';
1899                 }
1900                 return $s;
1901         }
1902
1903         function talkLink() {
1904                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1905                         # No discussion links for special pages
1906                         return '';
1907                 }
1908
1909                 $linkOptions = array();
1910
1911                 if( $this->mTitle->isTalkPage() ) {
1912                         $link = $this->mTitle->getSubjectPage();
1913                         switch( $link->getNamespace() ) {
1914                                 case NS_MAIN:
1915                                         $text = wfMsg( 'articlepage' );
1916                                         break;
1917                                 case NS_USER:
1918                                         $text = wfMsg( 'userpage' );
1919                                         break;
1920                                 case NS_PROJECT:
1921                                         $text = wfMsg( 'projectpage' );
1922                                         break;
1923                                 case NS_FILE:
1924                                         $text = wfMsg( 'imagepage' );
1925                                         # Make link known if image exists, even if the desc. page doesn't.
1926                                         if( wfFindFile( $link ) )
1927                                                 $linkOptions[] = 'known';
1928                                         break;
1929                                 case NS_MEDIAWIKI:
1930                                         $text = wfMsg( 'mediawikipage' );
1931                                         break;
1932                                 case NS_TEMPLATE:
1933                                         $text = wfMsg( 'templatepage' );
1934                                         break;
1935                                 case NS_HELP:
1936                                         $text = wfMsg( 'viewhelppage' );
1937                                         break;
1938                                 case NS_CATEGORY:
1939                                         $text = wfMsg( 'categorypage' );
1940                                         break;
1941                                 default:
1942                                         $text = wfMsg( 'articlepage' );
1943                         }
1944                 } else {
1945                         $link = $this->mTitle->getTalkPage();
1946                         $text = wfMsg( 'talkpage' );
1947                 }
1948
1949                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1950
1951                 return $s;
1952         }
1953
1954         function commentLink() {
1955                 global $wgOut;
1956
1957                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1958                         return '';
1959                 }
1960
1961                 # __NEWSECTIONLINK___ changes behaviour here
1962                 # If it is present, the link points to this page, otherwise
1963                 # it points to the talk page
1964                 if( $this->mTitle->isTalkPage() ) {
1965                         $title = $this->mTitle;
1966                 } elseif( $wgOut->showNewSectionLink() ) {
1967                         $title = $this->mTitle;
1968                 } else {
1969                         $title = $this->mTitle->getTalkPage();
1970                 }
1971
1972                 return $this->link(
1973                         $title,
1974                         wfMsg( 'postcomment' ),
1975                         array(),
1976                         array(
1977                                 'action' => 'edit',
1978                                 'section' => 'new'
1979                         ),
1980                         array( 'known', 'noclasses' )
1981                 );
1982         }
1983
1984         /* these are used extensively in SkinTemplate, but also some other places */
1985         static function makeMainPageUrl( $urlaction = '' ) {
1986                 $title = Title::newMainPage();
1987                 self::checkTitle( $title, '' );
1988                 return $title->getLocalURL( $urlaction );
1989         }
1990
1991         static function makeSpecialUrl( $name, $urlaction = '' ) {
1992                 $title = SpecialPage::getTitleFor( $name );
1993                 return $title->getLocalURL( $urlaction );
1994         }
1995
1996         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1997                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1998                 return $title->getLocalURL( $urlaction );
1999         }
2000
2001         static function makeI18nUrl( $name, $urlaction = '' ) {
2002                 $title = Title::newFromText( wfMsgForContent( $name ) );
2003                 self::checkTitle( $title, $name );
2004                 return $title->getLocalURL( $urlaction );
2005         }
2006
2007         static function makeUrl( $name, $urlaction = '' ) {
2008                 $title = Title::newFromText( $name );
2009                 self::checkTitle( $title, $name );
2010                 return $title->getLocalURL( $urlaction );
2011         }
2012
2013         /**
2014          * If url string starts with http, consider as external URL, else
2015          * internal
2016          */
2017         static function makeInternalOrExternalUrl( $name ) {
2018                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2019                         return $name;
2020                 } else {
2021                         return self::makeUrl( $name );
2022                 }
2023         }
2024
2025         # this can be passed the NS number as defined in Language.php
2026         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2027                 $title = Title::makeTitleSafe( $namespace, $name );
2028                 self::checkTitle( $title, $name );
2029                 return $title->getLocalURL( $urlaction );
2030         }
2031
2032         /* these return an array with the 'href' and boolean 'exists' */
2033         static function makeUrlDetails( $name, $urlaction = '' ) {
2034                 $title = Title::newFromText( $name );
2035                 self::checkTitle( $title, $name );
2036                 return array(
2037                         'href' => $title->getLocalURL( $urlaction ),
2038                         'exists' => $title->getArticleID() != 0 ? true : false
2039                 );
2040         }
2041
2042         /**
2043          * Make URL details where the article exists (or at least it's convenient to think so)
2044          */
2045         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2046                 $title = Title::newFromText( $name );
2047                 self::checkTitle( $title, $name );
2048                 return array(
2049                         'href' => $title->getLocalURL( $urlaction ),
2050                         'exists' => true
2051                 );
2052         }
2053
2054         # make sure we have some title to operate on
2055         static function checkTitle( &$title, $name ) {
2056                 if( !is_object( $title ) ) {
2057                         $title = Title::newFromText( $name );
2058                         if( !is_object( $title ) ) {
2059                                 $title = Title::newFromText( '--error: link target missing--' );
2060                         }
2061                 }
2062         }
2063
2064         /**
2065          * Build an array that represents the sidebar(s), the navigation bar among them
2066          *
2067          * @return array
2068          */
2069         function buildSidebar() {
2070                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2071                 global $wgLang;
2072                 wfProfileIn( __METHOD__ );
2073
2074                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2075
2076                 if ( $wgEnableSidebarCache ) {
2077                         $cachedsidebar = $parserMemc->get( $key );
2078                         if ( $cachedsidebar ) {
2079                                 wfProfileOut( __METHOD__ );
2080                                 return $cachedsidebar;
2081                         }
2082                 }
2083
2084                 $bar = array();
2085                 $this->addToSidebar( $bar, 'sidebar' );
2086
2087                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2088                 if ( $wgEnableSidebarCache ) {
2089                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2090                 }
2091                 wfProfileOut( __METHOD__ );
2092                 return $bar;
2093         }
2094         /**
2095          * Add content from a sidebar system message
2096          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2097          *
2098          * @param &$bar array
2099          * @param $message String
2100          */
2101         function addToSidebar( &$bar, $message ) {
2102                 $lines = explode( "\n", wfMsgForContent( $message ) );
2103                 $heading = '';
2104                 foreach( $lines as $line ) {
2105                         if( strpos( $line, '*' ) !== 0 ) {
2106                                 continue;
2107                         }
2108                         if( strpos( $line, '**') !== 0 ) {
2109                                 $heading = trim( $line, '* ' );
2110                                 if( !array_key_exists( $heading, $bar ) ) {
2111                                         $bar[$heading] = array();
2112                                 }
2113                         } else {
2114                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2115                                         $line = array_map( 'trim', explode( '|', trim( $line, '* ' ), 2 ) );
2116                                         $link = wfMsgForContent( $line[0] );
2117                                         if( $link == '-' ) {
2118                                                 continue;
2119                                         }
2120
2121                                         $text = wfMsgExt( $line[1], 'parsemag' );
2122                                         if( wfEmptyMsg( $line[1], $text ) ) {
2123                                                 $text = $line[1];
2124                                         }
2125                                         if( wfEmptyMsg( $line[0], $link ) ) {
2126                                                 $link = $line[0];
2127                                         }
2128
2129                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2130                                                 $href = $link;
2131                                         } else {
2132                                                 $title = Title::newFromText( $link );
2133                                                 if ( $title ) {
2134                                                         $title = $title->fixSpecialName();
2135                                                         $href = $title->getLocalURL();
2136                                                 } else {
2137                                                         $href = 'INVALID-TITLE';
2138                                                 }
2139                                         }
2140
2141                                         $bar[$heading][] = array(
2142                                                 'text' => $text,
2143                                                 'href' => $href,
2144                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2145                                                 'active' => false
2146                                         );
2147                                 } else {
2148                                         continue;
2149                                 }
2150                         }
2151                 }
2152         }
2153
2154         /**
2155          * Should we include common/wikiprintable.css?  Skins that have their own
2156          * print stylesheet should override this and return false.  (This is an
2157          * ugly hack to get Monobook to play nicely with
2158          * OutputPage::headElement().)
2159          *
2160          * @return bool
2161          */
2162         public function commonPrintStylesheet() {
2163                 return true;
2164         }
2165 }