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 if( isset( $skinNames[$wgDefaultSkin] ) ) {
 119                         return $wgDefaultSkin;
 120                 } else {
 121                         return 'vector';
 122                 }
 123         }
 124
 125         /**
 126          * Factory method for loading a skin of a given type
 127          * @param $key String: 'monobook', 'standard', etc.
 128          * @return Skin
 129          */
 130         static function &newFromKey( $key ) {
 131                 global $wgStyleDirectory;
 132
 133                 $key = Skin::normalizeKey( $key );
 134
 135                 $skinNames = Skin::getSkinNames();
 136                 $skinName = $skinNames[$key];
 137                 $className = 'Skin' . ucfirst( $key );
 138
 139                 # Grab the skin class and initialise it.
 140                 if ( !class_exists( $className ) ) {
 141                         // Preload base classes to work around APC/PHP5 bug
 142                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 143                         if( file_exists( $deps ) ) {
 144                                 include_once( $deps );
 145                         }
 146                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 147
 148                         # Check if we got if not failback to default skin
 149                         if( !class_exists( $className ) ) {
 150                                 # DO NOT die if the class isn't found. This breaks maintenance
 151                                 # scripts and can cause a user account to be unrecoverable
 152                                 # except by SQL manipulation if a previously valid skin name
 153                                 # is no longer valid.
 154                                 wfDebug( "Skin class does not exist: $className\n" );
 155                                 $className = 'SkinVector';
 156                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 157                         }
 158                 }
 159                 $skin = new $className;
 160                 return $skin;
 161         }
 162
 163         /** @return string path to the skin stylesheet */
 164         function getStylesheet() {
 165                 return 'common/wikistandard.css';
 166         }
 167
 168         /** @return string skin name */
 169         public function getSkinName() {
 170                 return $this->skinname;
 171         }
 172
 173         function qbSetting() {
 174                 global $wgOut, $wgUser;
 175
 176                 if ( $wgOut->isQuickbarSuppressed() ) {
 177                         return 0;
 178                 }
 179                 $q = $wgUser->getOption( 'quickbar', 0 );
 180                 return $q;
 181         }
 182
 183         function initPage( OutputPage $out ) {
 184                 global $wgFavicon, $wgAppleTouchIcon;
 185
 186                 wfProfileIn( __METHOD__ );
 187
 188                 # Generally the order of the favicon and apple-touch-icon links
 189                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 190                 # uses whichever one appears later in the HTML source. Make sure
 191                 # apple-touch-icon is specified first to avoid this.
 192                 if( false !== $wgAppleTouchIcon ) {
 193                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 194                 }
 195
 196                 if( false !== $wgFavicon ) {
 197                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 198                 }
 199
 200                 # OpenSearch description link
 201                 $out->addLink( array(
 202                         'rel' => 'search',
 203                         'type' => 'application/opensearchdescription+xml',
 204                         'href' => wfScript( 'opensearch_desc' ),
 205                         'title' => wfMsgForContent( 'opensearch-desc' ),
 206                 ));
 207
 208                 $this->addMetadataLinks( $out );
 209
 210                 $this->mRevisionId = $out->mRevisionId;
 211
 212                 $this->preloadExistence();
 213
 214                 wfProfileOut( __METHOD__ );
 215         }
 216
 217         /**
 218          * Preload the existence of three commonly-requested pages in a single query
 219          */
 220         function preloadExistence() {
 221                 global $wgUser;
 222
 223                 // User/talk link
 224                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 225
 226                 // Other tab link
 227                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 228                         // nothing
 229                 } elseif ( $this->mTitle->isTalkPage() ) {
 230                         $titles[] = $this->mTitle->getSubjectPage();
 231                 } else {
 232                         $titles[] = $this->mTitle->getTalkPage();
 233                 }
 234
 235                 $lb = new LinkBatch( $titles );
 236                 $lb->execute();
 237         }
 238
 239         /**
 240          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 241          * output.
 242          * @param $out Object: instance of OutputPage
 243          */
 244         function addMetadataLinks( OutputPage $out ) {
 245                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 246                 global $wgRightsPage, $wgRightsUrl;
 247
 248                 if( $out->isArticleRelated() ) {
 249                         # note: buggy CC software only reads first "meta" link
 250                         if( $wgEnableCreativeCommonsRdf ) {
 251                                 $out->addMetadataLink( array(
 252                                         'title' => 'Creative Commons',
 253                                         'type' => 'application/rdf+xml',
 254                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 255                                 );
 256                         }
 257                         if( $wgEnableDublinCoreRdf ) {
 258                                 $out->addMetadataLink( array(
 259                                         'title' => 'Dublin Core',
 260                                         'type' => 'application/rdf+xml',
 261                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 262                                 );
 263                         }
 264                 }
 265                 $copyright = '';
 266                 if( $wgRightsPage ) {
 267                         $copy = Title::newFromText( $wgRightsPage );
 268                         if( $copy ) {
 269                                 $copyright = $copy->getLocalURL();
 270                         }
 271                 }
 272                 if( !$copyright && $wgRightsUrl ) {
 273                         $copyright = $wgRightsUrl;
 274                 }
 275                 if( $copyright ) {
 276                         $out->addLink( array(
 277                                 'rel' => 'copyright',
 278                                 'href' => $copyright )
 279                         );
 280                 }
 281         }
 282
 283         /**
 284          * Set some local variables
 285          */
 286         protected function setMembers() {
 287                 global $wgUser;
 288                 $this->mUser = $wgUser;
 289                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 290                 $this->usercss = false;
 291         }
 292
 293         /**
 294          * Set the title
 295          * @param $t Title object to use
 296          */
 297         public function setTitle( $t ) {
 298                 $this->mTitle = $t;
 299         }
 300
 301         /** Get the title */
 302         public function getTitle() {
 303                 return $this->mTitle;
 304         }
 305
 306         /**
 307          * Outputs the HTML generated by other functions.
 308          * @param $out Object: instance of OutputPage
 309          */
 310         function outputPage( OutputPage $out ) {
 311                 global $wgDebugComments;
 312                 wfProfileIn( __METHOD__ );
 313
 314                 $this->setMembers();
 315                 $this->initPage( $out );
 316
 317                 // See self::afterContentHook() for documentation
 318                 $afterContent = $this->afterContentHook();
 319
 320                 $out->out( $out->headElement( $this ) );
 321
 322                 if ( $wgDebugComments ) {
 323                         $out->out( "<!-- Wiki debugging output:\n" .
 324                           $out->mDebugtext . "-->\n" );
 325                 }
 326
 327                 $out->out( $this->beforeContent() );
 328
 329                 $out->out( $out->mBodytext . "\n" );
 330
 331                 $out->out( $this->afterContent() );
 332
 333                 $out->out( $afterContent );
 334
 335                 $out->out( $this->bottomScripts() );
 336
 337                 $out->out( wfReportTime() );
 338
 339                 $out->out( "\n</body></html>" );
 340                 wfProfileOut( __METHOD__ );
 341         }
 342
 343         static function makeVariablesScript( $data ) {
 344                 if( $data ) {
 345                         $r = array();
 346                         foreach ( $data as $name => $value ) {
 347                                 $encValue = Xml::encodeJsVar( $value );
 348                                 $r[] = "$name=$encValue";
 349                         }
 350                         $js = 'var ' . implode( ",\n", $r ) . ';';
 351                         return Html::inlineScript( "\n$js\n" );
 352                 } else {
 353                         return '';
 354                 }
 355         }
 356
 357         /**
 358          * Make a <script> tag containing global variables
 359          * @param $skinName string Name of the skin
 360          * The odd calling convention is for backwards compatibility
 361          * @todo FIXME: Make this not depend on $wgTitle!
 362          */
 363         static function makeGlobalVariablesScript( $skinName ) {
 364                 if ( is_array( $skinName ) ) {
 365                         # Weird back-compat stuff.
 366                         $skinName = $skinName['skinname'];
 367                 }
 368                 global $wgScript, $wgTitle, $wgStylePath, $wgUser, $wgScriptExtension;
 369                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 370                 global $wgOut, $wgArticle;
 371                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 372                 global $wgUseAjax, $wgAjaxWatch;
 373                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 374                 global $wgRestrictionTypes;
 375                 global $wgDBname, $wgEnableMWSuggest;
 376                 global $wgSitename;
 377
 378                 $ns = $wgTitle->getNamespace();
 379                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 380                 $separatorTransTable = $wgContLang->separatorTransformTable();
 381                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
 382                 $compactSeparatorTransTable = array(
 383                         implode( "\t", array_keys( $separatorTransTable ) ),
 384                         implode( "\t", $separatorTransTable ),
 385                 );
 386                 $digitTransTable = $wgContLang->digitTransformTable();
 387                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
 388                 $compactDigitTransTable = array(
 389                         implode( "\t", array_keys( $digitTransTable ) ),
 390                         implode( "\t", $digitTransTable ),
 391                 );
 392
 393                 $mainPage = Title::newMainPage();
 394                 $vars = array(
 395                         'skin' => $skinName,
 396                         'stylepath' => $wgStylePath,
 397                         'wgUrlProtocols' => wfUrlProtocols(),
 398                         'wgArticlePath' => $wgArticlePath,
 399                         'wgScriptPath' => $wgScriptPath,
 400                         'wgScriptExtension' => $wgScriptExtension,
 401                         'wgScript' => $wgScript,
 402                         'wgVariantArticlePath' => $wgVariantArticlePath,
 403                         'wgActionPaths' => (object)$wgActionPaths,
 404                         'wgServer' => $wgServer,
 405                         'wgCanonicalNamespace' => $nsname,
 406                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 407                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 408                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 409                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 410                         'wgTitle' => $wgTitle->getText(),
 411                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 412                         'wgArticleId' => $wgTitle->getArticleId(),
 413                         'wgIsArticle' => $wgOut->isArticle(),
 414                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 415                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 416                         'wgUserLanguage' => $wgLang->getCode(),
 417                         'wgContentLanguage' => $wgContLang->getCode(),
 418                         'wgBreakFrames' => $wgBreakFrames,
 419                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 420                         'wgVersion' => $wgVersion,
 421                         'wgEnableAPI' => $wgEnableAPI,
 422                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 423                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
 424                         'wgDigitTransformTable' => $compactDigitTransTable,
 425                         'wgMainPageTitle' => $mainPage ? $mainPage->getPrefixedText() : null,
 426                         'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
 427                         'wgNamespaceIds' => $wgContLang->getNamespaceIds(),
 428                         'wgSiteName' => $wgSitename,
 429                         'wgCategories' => $wgOut->getCategories(),
 430                 );
 431                 if ( $wgContLang->hasVariants() ) {
 432                         $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
 433                 }
 434
 435                 // if on upload page output the extension list & js_upload
 436                 if( SpecialPage::resolveAlias( $wgTitle->getDBkey() ) == 'Upload' ) {
 437                         global $wgFileExtensions;
 438                         $vars['wgFileExtensions'] = $wgFileExtensions;
 439                 }
 440
 441                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 442                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 443                         $vars['wgDBname'] = $wgDBname;
 444                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 445                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 446                 }
 447
 448                 foreach( $wgRestrictionTypes as $type ) {
 449                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 450                 }
 451
 452                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 453                         $msgs = (object)array();
 454                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching',
 455                                 'tooltip-ca-watch', 'tooltip-ca-unwatch' ) as $msgName ) {
 456                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 457                         }
 458                         $vars['wgAjaxWatch'] = $msgs;
 459                 }
 460
 461                 // Allow extensions to add their custom variables to the global JS variables
 462                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 463
 464                 return self::makeVariablesScript( $vars );
 465         }
 466
 467         /**
 468          * To make it harder for someone to slip a user a fake
 469          * user-JavaScript or user-CSS preview, a random token
 470          * is associated with the login session. If it's not
 471          * passed back with the preview request, we won't render
 472          * the code.
 473          *
 474          * @param $action String: 'edit', 'submit' etc.
 475          * @return bool
 476          */
 477         public function userCanPreview( $action ) {
 478                 global $wgRequest, $wgUser;
 479
 480                 if( $action != 'submit' ) {
 481                         return false;
 482                 }
 483                 if( !$wgRequest->wasPosted() ) {
 484                         return false;
 485                 }
 486                 if( !$this->mTitle->userCanEditCssSubpage() ) {
 487                         return false;
 488                 }
 489                 if( !$this->mTitle->userCanEditJsSubpage() ) {
 490                         return false;
 491                 }
 492                 return $wgUser->matchEditToken(
 493                         $wgRequest->getVal( 'wpEditToken' ) );
 494         }
 495
 496         /**
 497          * Generated JavaScript action=raw&gen=js
 498          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 499          * nated together.  For some bizarre reason, it does *not* return any
 500          * custom user JS from subpages.  Huh?
 501          *
 502          * There's absolutely no reason to have separate Monobook/Common JSes.
 503          * Any JS that cares can just check the skin variable generated at the
 504          * top.  For now Monobook.js will be maintained, but it should be consi-
 505          * dered deprecated.
 506          *
 507          * @param $skinName String: If set, overrides the skin name
 508          * @return string
 509          */
 510         public function generateUserJs( $skinName = null ) {
 511                 global $wgStylePath;
 512
 513                 wfProfileIn( __METHOD__ );
 514                 if( !$skinName ) {
 515                         $skinName = $this->getSkinName();
 516                 }
 517
 518                 $s = "/* generated javascript */\n";
 519                 $s .= "var skin = '" . Xml::escapeJsString( $skinName ) . "';\n";
 520                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 521                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 522                 $commonJs = wfMsgExt( 'common.js', 'content' );
 523                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 524                         $s .= $commonJs;
 525                 }
 526
 527                 $s .= "\n\n/* MediaWiki:" . ucfirst( $skinName ) . ".js */\n";
 528                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 529                 // by checking for default message content
 530                 $msgKey = ucfirst( $skinName ) . '.js';
 531                 $userJS = wfMsgExt( $msgKey, 'content' );
 532                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 533                         $s .= $userJS;
 534                 }
 535
 536                 wfProfileOut( __METHOD__ );
 537                 return $s;
 538         }
 539
 540         /**
 541          * Generate user stylesheet for action=raw&gen=css
 542          */
 543         public function generateUserStylesheet() {
 544                 wfProfileIn( __METHOD__ );
 545                 $s = "/* generated user stylesheet */\n" .
 546                         $this->reallyGenerateUserStylesheet();
 547                 wfProfileOut( __METHOD__ );
 548                 return $s;
 549         }
 550
 551         /**
 552          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 553          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 554          */
 555         protected function reallyGenerateUserStylesheet() {
 556                 global $wgUser;
 557                 $s = '';
 558                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 559                         $underline = $undopt ? 'underline' : 'none';
 560                         $s .= "a { text-decoration: $underline; }\n";
 561                 }
 562                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 563                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 564                 } else {
 565                         $s .= <<<CSS
 566 a.new, #quickbar a.new,
 567 a.stub, #quickbar a.stub {
 568         color: inherit;
 569 }
 570 a.new:after, #quickbar a.new:after {
 571         content: "?";
 572         color: #CC2200;
 573 }
 574 a.stub:after, #quickbar a.stub:after {
 575         content: "!";
 576         color: #772233;
 577 }
 578 CSS;
 579                 }
 580                 if( $wgUser->getOption( 'justify' ) ) {
 581                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 582                 }
 583                 if( !$wgUser->getOption( 'showtoc' ) ) {
 584                         $s .= "#toc { display: none; }\n";
 585                 }
 586                 if( !$wgUser->getOption( 'editsection' ) ) {
 587                         $s .= ".editsection { display: none; }\n";
 588                 }
 589                 $fontstyle = $wgUser->getOption( 'editfont' );
 590                 if ( $fontstyle !== 'default' ) {
 591                         $s .= "textarea { font-family: $fontstyle; }\n";
 592                 }
 593                 return $s;
 594         }
 595
 596         /**
 597          * @private
 598          */
 599         function setupUserCss( OutputPage $out ) {
 600                 global $wgRequest, $wgUser;
 601                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage;
 602
 603                 wfProfileIn( __METHOD__ );
 604
 605                 $this->setupSkinUserCss( $out );
 606
 607                 $siteargs = array(
 608                         'action' => 'raw',
 609                         'maxage' => $wgSquidMaxage,
 610                 );
 611
 612                 // Add any extension CSS
 613                 foreach ( $out->getExtStyle() as $url ) {
 614                         $out->addStyle( $url );
 615                 }
 616
 617                 // If we use the site's dynamic CSS, throw that in, too
 618                 // Per-site custom styles
 619                 if( $wgUseSiteCss ) {
 620                         global $wgHandheldStyle;
 621                         $query = wfArrayToCGI( self::getDynamicStylesheetQuery() );
 622                         # Site settings must override extension css! (bug 15025)
 623                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 624                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 625                         if( $wgHandheldStyle ) {
 626                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 627                         }
 628                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 629                 }
 630
 631                 global $wgAllowUserCssPrefs;
 632                 if( $wgAllowUserCssPrefs ){
 633                         if( $wgUser->isLoggedIn() ) {
 634                                 // Ensure that logged-in users' generated CSS isn't clobbered
 635                                 // by anons' publicly cacheable generated CSS.
 636                                 $siteargs['smaxage'] = '0';
 637                                 $siteargs['ts'] = $wgUser->mTouched;
 638                         }
 639                         // Per-user styles based on preferences
 640                         $siteargs['gen'] = 'css';
 641                         if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 642                                 $siteargs['useskin'] = $us;
 643                         }
 644                         $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 645                 }
 646
 647                 // Per-user custom style pages
 648                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 649                         $action = $wgRequest->getVal( 'action' );
 650                         # If we're previewing the CSS page, use it
 651                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 652                                 // @FIXME: properly escape the cdata!
 653                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 654                         } else {
 655                                 $names = array( 'common', $this->getSkinName() );
 656                                 foreach( $names as $name ) {
 657                                         $out->addStyle( self::makeUrl(
 658                                                 $this->userpage . '/' . $name . '.css',
 659                                                 'action=raw&ctype=text/css' )
 660                                         );
 661                                 }
 662                         }
 663                 }
 664
 665                 wfProfileOut( __METHOD__ );
 666         }
 667
 668         /**
 669          * Get the query to generate a dynamic stylesheet
 670          *
 671          * @return array
 672          */
 673         public static function getDynamicStylesheetQuery() {
 674                 global $wgSquidMaxage;
 675                 return array(
 676                                 'action' => 'raw',
 677                                 'maxage' => $wgSquidMaxage,
 678                                 'usemsgcache' => 'yes',
 679                                 'ctype' => 'text/css',
 680                                 'smaxage' => $wgSquidMaxage,
 681                         );
 682         }
 683
 684         /**
 685          * Add skin specific stylesheets
 686          * @param $out OutputPage
 687          */
 688         function setupSkinUserCss( OutputPage $out ) {
 689                 $out->addStyle( 'common/shared.css' );
 690                 $out->addStyle( 'common/oldshared.css' );
 691                 $out->addStyle( $this->getStylesheet() );
 692                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 693         }
 694
 695         function getPageClasses( $title ) {
 696                 $numeric = 'ns-' . $title->getNamespace();
 697                 if( $title->getNamespace() == NS_SPECIAL ) {
 698                         $type = 'ns-special';
 699                 } elseif( $title->isTalkPage() ) {
 700                         $type = 'ns-talk';
 701                 } else {
 702                         $type = 'ns-subject';
 703                 }
 704                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 705                 return "$numeric $type $name";
 706         }
 707
 708         /**
 709          * URL to the logo
 710          */
 711         function getLogo() {
 712                 global $wgLogo;
 713                 return $wgLogo;
 714         }
 715
 716         /**
 717          * This will be called immediately after the <body> tag.  Split into
 718          * two functions to make it easier to subclass.
 719          */
 720         function beforeContent() {
 721                 return $this->doBeforeContent();
 722         }
 723
 724         function doBeforeContent() {
 725                 global $wgContLang;
 726                 wfProfileIn( __METHOD__ );
 727
 728                 $s = '';
 729                 $qb = $this->qbSetting();
 730
 731                 $langlinks = $this->otherLanguages();
 732                 if( $langlinks ) {
 733                         $rows = 2;
 734                         $borderhack = '';
 735                 } else {
 736                         $rows = 1;
 737                         $langlinks = false;
 738                         $borderhack = 'class="top"';
 739                 }
 740
 741                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 742                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 743
 744                 $shove = ( $qb != 0 );
 745                 $left = ( $qb == 1 || $qb == 3 );
 746                 if( $wgContLang->isRTL() ) {
 747                         $left = !$left;
 748                 }
 749
 750                 if( !$shove ) {
 751                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 752                                 $this->logoText() . '</td>';
 753                 } elseif( $left ) {
 754                         $s .= $this->getQuickbarCompensator( $rows );
 755                 }
 756                 $l = $wgContLang->alignStart();
 757                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 758
 759                 $s .= $this->topLinks();
 760                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 761
 762                 $r = $wgContLang->alignEnd();
 763                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 764                 $s .= $this->nameAndLogin();
 765                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 766
 767                 if ( $langlinks ) {
 768                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 769                 }
 770
 771                 if ( $shove && !$left ) { # Right
 772                         $s .= $this->getQuickbarCompensator( $rows );
 773                 }
 774                 $s .= "</tr>\n</table>\n</div>\n";
 775                 $s .= "\n<div id='article'>\n";
 776
 777                 $notice = wfGetSiteNotice();
 778                 if( $notice ) {
 779                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 780                 }
 781                 $s .= $this->pageTitle();
 782                 $s .= $this->pageSubtitle();
 783                 $s .= $this->getCategories();
 784                 wfProfileOut( __METHOD__ );
 785                 return $s;
 786         }
 787
 788         function getCategoryLinks() {
 789                 global $wgOut, $wgUseCategoryBrowser;
 790                 global $wgContLang, $wgUser;
 791
 792                 if( count( $wgOut->mCategoryLinks ) == 0 ) {
 793                         return '';
 794                 }
 795
 796                 # Separator
 797                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 798
 799                 // Use Unicode bidi embedding override characters,
 800                 // to make sure links don't smash each other up in ugly ways.
 801                 $dir = $wgContLang->getDir();
 802                 $embed = "<span dir='$dir'>";
 803                 $pop = '</span>';
 804
 805                 $allCats = $wgOut->getCategoryLinks();
 806                 $s = '';
 807                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 808                 if ( !empty( $allCats['normal'] ) ) {
 809                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 810
 811                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 812                         $s .= '<div id="mw-normal-catlinks">' .
 813                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 814                                 . $colon . $t . '</div>';
 815                 }
 816
 817                 # Hidden categories
 818                 if ( isset( $allCats['hidden'] ) ) {
 819                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 820                                 $class ='mw-hidden-cats-user-shown';
 821                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 822                                 $class = 'mw-hidden-cats-ns-shown';
 823                         } else {
 824                                 $class = 'mw-hidden-cats-hidden';
 825                         }
 826                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 827                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 828                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 829                                 '</div>';
 830                 }
 831
 832                 # optional 'dmoz-like' category browser. Will be shown under the list
 833                 # of categories an article belong to
 834                 if( $wgUseCategoryBrowser ) {
 835                         $s .= '<br /><hr />';
 836
 837                         # get a big array of the parents tree
 838                         $parenttree = $this->mTitle->getParentCategoryTree();
 839                         # Skin object passed by reference cause it can not be
 840                         # accessed under the method subfunction drawCategoryBrowser
 841                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 842                         # Clean out bogus first entry and sort them
 843                         unset( $tempout[0] );
 844                         asort( $tempout );
 845                         # Output one per line
 846                         $s .= implode( "<br />\n", $tempout );
 847                 }
 848
 849                 return $s;
 850         }
 851
 852         /**
 853          * Render the array as a serie of links.
 854          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 855          * @param &skin Object: skin passed by reference
 856          * @return String separated by &gt;, terminate with "\n"
 857          */
 858         function drawCategoryBrowser( $tree, &$skin ) {
 859                 $return = '';
 860                 foreach( $tree as $element => $parent ) {
 861                         if( empty( $parent ) ) {
 862                                 # element start a new list
 863                                 $return .= "\n";
 864                         } else {
 865                                 # grab the others elements
 866                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 867                         }
 868                         # add our current element to the list
 869                         $eltitle = Title::newFromText( $element );
 870                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 871                 }
 872                 return $return;
 873         }
 874
 875         function getCategories() {
 876                 $catlinks = $this->getCategoryLinks();
 877
 878                 $classes = 'catlinks';
 879
 880                 // Check what we're showing
 881                 global $wgOut, $wgUser;
 882                 $allCats = $wgOut->getCategoryLinks();
 883                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 884                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 885
 886                 if( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 887                         $classes .= ' catlinks-allhidden';
 888                 }
 889
 890                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 891         }
 892
 893         function getQuickbarCompensator( $rows = 1 ) {
 894                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 895         }
 896
 897         /**
 898          * This runs a hook to allow extensions placing their stuff after content
 899          * and article metadata (e.g. categories).
 900          * Note: This function has nothing to do with afterContent().
 901          *
 902          * This hook is placed here in order to allow using the same hook for all
 903          * skins, both the SkinTemplate based ones and the older ones, which directly
 904          * use this class to get their data.
 905          *
 906          * The output of this function gets processed in SkinTemplate::outputPage() for
 907          * the SkinTemplate based skins, all other skins should directly echo it.
 908          *
 909          * Returns an empty string by default, if not changed by any hook function.
 910          */
 911         protected function afterContentHook() {
 912                 $data = '';
 913
 914                 if( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 915                         // adding just some spaces shouldn't toggle the output
 916                         // of the whole <div/>, so we use trim() here
 917                         if( trim( $data ) != '' ) {
 918                                 // Doing this here instead of in the skins to
 919                                 // ensure that the div has the same ID in all
 920                                 // skins
 921                                 $data = "<div id='mw-data-after-content'>\n" .
 922                                         "\t$data\n" .
 923                                         "</div>\n";
 924                         }
 925                 } else {
 926                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 927                 }
 928
 929                 return $data;
 930         }
 931
 932         /**
 933          * Generate debug data HTML for displaying at the bottom of the main content
 934          * area.
 935          * @return String HTML containing debug data, if enabled (otherwise empty).
 936          */
 937         protected function generateDebugHTML() {
 938                 global $wgShowDebug, $wgOut;
 939                 if ( $wgShowDebug ) {
 940                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 941                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 942                                 $listInternals . "</ul>\n";
 943                 }
 944                 return '';
 945         }
 946
 947         private function formatDebugHTML( $debugText ) {
 948                 $lines = explode( "\n", $debugText );
 949                 $curIdent = 0;
 950                 $ret = '<li>';
 951                 foreach( $lines as $line ) {
 952                         $m = array();
 953                         $display = ltrim( $line );
 954                         $ident = strlen( $line ) - strlen( $display );
 955                         $diff = $ident - $curIdent;
 956
 957                         if ( $display == '' ) {
 958                                 $display = "\xc2\xa0";
 959                         }
 960
 961                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 962                                 $ident = $curIdent;
 963                                 $diff = 0;
 964                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 965                         } else {
 966                                 $display = htmlspecialchars( $display );
 967                         }
 968
 969                         if ( $diff < 0 ) {
 970                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 971                         } elseif ( $diff == 0 ) {
 972                                 $ret .= "</li><li>\n";
 973                         } else {
 974                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 975                         }
 976                         $ret .= $display . "\n";
 977
 978                         $curIdent = $ident;
 979                 }
 980                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 981                 return $ret;
 982         }
 983
 984         /**
 985          * This gets called shortly before the </body> tag.
 986          * @return String HTML to be put before </body>
 987          */
 988         function afterContent() {
 989                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 990                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 991         }
 992
 993         /**
 994          * This gets called shortly before the </body> tag.
 995          * @return String HTML-wrapped JS code to be put before </body>
 996          */
 997         function bottomScripts() {
 998                 $bottomScriptText = "\n" . Html::inlineScript( 'if (window.runOnloadHook) runOnloadHook();' ) . "\n";
 999                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
1000                 return $bottomScriptText;
1001         }
1002
1003         /** @return string Retrievied from HTML text */
1004         function printSource() {
1005                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
1006                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
1007         }
1008
1009         function printFooter() {
1010                 return "<p>" .  $this->printSource() .
1011                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1012         }
1013
1014         /** overloaded by derived classes */
1015         function doAfterContent() {
1016                 return '</div></div>';
1017         }
1018
1019         function pageTitleLinks() {
1020                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1021
1022                 $oldid = $wgRequest->getVal( 'oldid' );
1023                 $diff = $wgRequest->getVal( 'diff' );
1024                 $action = $wgRequest->getText( 'action' );
1025
1026                 $s[] = $this->printableLink();
1027                 $disclaimer = $this->disclaimerLink(); # may be empty
1028                 if( $disclaimer ) {
1029                         $s[] = $disclaimer;
1030                 }
1031                 $privacy = $this->privacyLink(); # may be empty too
1032                 if( $privacy ) {
1033                         $s[] = $privacy;
1034                 }
1035
1036                 if ( $wgOut->isArticleRelated() ) {
1037                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1038                                 $name = $this->mTitle->getDBkey();
1039                                 $image = wfFindFile( $this->mTitle );
1040                                 if( $image ) {
1041                                         $link = htmlspecialchars( $image->getURL() );
1042                                         $style = $this->getInternalLinkAttributes( $link, $name );
1043                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1044                                 }
1045                         }
1046                 }
1047                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1048                         $s[] .= $this->link(
1049                                         $this->mTitle,
1050                                         wfMsg( 'currentrev' ),
1051                                         array(),
1052                                         array(),
1053                                         array( 'known', 'noclasses' )
1054                         );
1055                 }
1056
1057                 if ( $wgUser->getNewtalk() ) {
1058                         # do not show "You have new messages" text when we are viewing our
1059                         # own talk page
1060                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1061                                 $tl = $this->link(
1062                                         $wgUser->getTalkPage(),
1063                                         wfMsgHtml( 'newmessageslink' ),
1064                                         array(),
1065                                         array( 'redirect' => 'no' ),
1066                                         array( 'known', 'noclasses' )
1067                                 );
1068
1069                                 $dl = $this->link(
1070                                         $wgUser->getTalkPage(),
1071                                         wfMsgHtml( 'newmessagesdifflink' ),
1072                                         array(),
1073                                         array( 'diff' => 'cur' ),
1074                                         array( 'known', 'noclasses' )
1075                                 );
1076                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1077                                 # disable caching
1078                                 $wgOut->setSquidMaxage( 0 );
1079                                 $wgOut->enableClientCache( false );
1080                         }
1081                 }
1082
1083                 $undelete = $this->getUndeleteLink();
1084                 if( !empty( $undelete ) ) {
1085                         $s[] = $undelete;
1086                 }
1087                 return $wgLang->pipeList( $s );
1088         }
1089
1090         function getUndeleteLink() {
1091                 global $wgUser, $wgLang, $wgRequest;
1092
1093                 $action = $wgRequest->getVal( 'action', 'view' );
1094
1095                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1096                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1097                         $n = $this->mTitle->isDeleted();
1098                         if ( $n ) {
1099                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1100                                         $msg = 'thisisdeleted';
1101                                 } else {
1102                                         $msg = 'viewdeleted';
1103                                 }
1104                                 return wfMsg(
1105                                         $msg,
1106                                         $this->link(
1107                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1108                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1109                                                 array(),
1110                                                 array(),
1111                                                 array( 'known', 'noclasses' )
1112                                         )
1113                                 );
1114                         }
1115                 }
1116                 return '';
1117         }
1118
1119         function printableLink() {
1120                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1121
1122                 $s = array();
1123
1124                 if ( !$wgOut->isPrintable() ) {
1125                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1126                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1127                 }
1128
1129                 if( $wgOut->isSyndicated() ) {
1130                         foreach( $wgFeedClasses as $format => $class ) {
1131                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1132                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1133                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1134                         }
1135                 }
1136                 return $wgLang->pipeList( $s );
1137         }
1138
1139         /**
1140          * Gets the h1 element with the page title.
1141          * @return string
1142          */
1143         function pageTitle() {
1144                 global $wgOut;
1145                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1146                 return $s;
1147         }
1148
1149         function pageSubtitle() {
1150                 global $wgOut;
1151
1152                 $sub = $wgOut->getSubtitle();
1153                 if ( $sub == '' ) {
1154                         global $wgExtraSubtitle;
1155                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1156                 }
1157                 $subpages = $this->subPageSubtitle();
1158                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1159                 $s = "<p class='subtitle'>{$sub}</p>\n";
1160                 return $s;
1161         }
1162
1163         function subPageSubtitle() {
1164                 $subpages = '';
1165                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1166                         return $subpages;
1167                 }
1168
1169                 global $wgOut;
1170                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1171                         $ptext = $this->mTitle->getPrefixedText();
1172                         if( preg_match( '/\//', $ptext ) ) {
1173                                 $links = explode( '/', $ptext );
1174                                 array_pop( $links );
1175                                 $c = 0;
1176                                 $growinglink = '';
1177                                 $display = '';
1178                                 foreach( $links as $link ) {
1179                                         $growinglink .= $link;
1180                                         $display .= $link;
1181                                         $linkObj = Title::newFromText( $growinglink );
1182                                         if( is_object( $linkObj ) && $linkObj->exists() ) {
1183                                                 $getlink = $this->link(
1184                                                         $linkObj,
1185                                                         htmlspecialchars( $display ),
1186                                                         array(),
1187                                                         array(),
1188                                                         array( 'known', 'noclasses' )
1189                                                 );
1190                                                 $c++;
1191                                                 if( $c > 1 ) {
1192                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1193                                                 } else  {
1194                                                         $subpages .= '&lt; ';
1195                                                 }
1196                                                 $subpages .= $getlink;
1197                                                 $display = '';
1198                                         } else {
1199                                                 $display .= '/';
1200                                         }
1201                                         $growinglink .= '/';
1202                                 }
1203                         }
1204                 }
1205                 return $subpages;
1206         }
1207
1208         /**
1209          * Returns true if the IP should be shown in the header
1210          */
1211         function showIPinHeader() {
1212                 global $wgShowIPinHeader;
1213                 return $wgShowIPinHeader && session_id() != '';
1214         }
1215
1216         function nameAndLogin() {
1217                 global $wgUser, $wgLang, $wgContLang;
1218
1219                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1220
1221                 $ret = '';
1222                 if ( $wgUser->isAnon() ) {
1223                         if( $this->showIPinHeader() ) {
1224                                 $name = wfGetIP();
1225
1226                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1227                                         $wgLang->getNsText( NS_TALK ) );
1228
1229                                 $ret .= "$name ($talkLink)";
1230                         } else {
1231                                 $ret .= wfMsg( 'notloggedin' );
1232                         }
1233
1234                         $returnTo = $this->mTitle->getPrefixedDBkey();
1235                         $query = array();
1236                         if ( $logoutPage != $returnTo ) {
1237                                 $query['returnto'] = $returnTo;
1238                         }
1239
1240                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1241                                 ? 'nav-login-createaccount'
1242                                 : 'login';
1243                         $ret .= "\n<br />" . $this->link(
1244                                 SpecialPage::getTitleFor( 'Userlogin' ),
1245                                 wfMsg( $loginlink ), array(), $query
1246                         );
1247                 } else {
1248                         $returnTo = $this->mTitle->getPrefixedDBkey();
1249                         $talkLink = $this->link( $wgUser->getTalkPage(),
1250                                 $wgLang->getNsText( NS_TALK ) );
1251
1252                         $ret .= $this->link( $wgUser->getUserPage(),
1253                                 htmlspecialchars( $wgUser->getName() ) );
1254                         $ret .= " ($talkLink)<br />";
1255                         $ret .= $wgLang->pipeList( array(
1256                                 $this->link(
1257                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1258                                         array(), array( 'returnto' => $returnTo )
1259                                 ),
1260                                 $this->specialLink( 'preferences' ),
1261                         ) );
1262                 }
1263                 $ret = $wgLang->pipeList( array(
1264                         $ret,
1265                         $this->link(
1266                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1267                                 wfMsg( 'help' )
1268                         ),
1269                 ) );
1270
1271                 return $ret;
1272         }
1273
1274         function getSearchLink() {
1275                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1276                 return $searchPage->getLocalURL();
1277         }
1278
1279         function escapeSearchLink() {
1280                 return htmlspecialchars( $this->getSearchLink() );
1281         }
1282
1283         function searchForm() {
1284                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1285                 $search = $wgRequest->getText( 'search' );
1286
1287                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1288                   . $this->escapeSearchLink() . "\">\n"
1289                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1290                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1291                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1292
1293                 if( $wgUseTwoButtonsSearchForm ) {
1294                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1295                 } else {
1296                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1297                 }
1298
1299                 $s .= '</form>';
1300
1301                 // Ensure unique id's for search boxes made after the first
1302                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1303
1304                 return $s;
1305         }
1306
1307         function topLinks() {
1308                 global $wgOut;
1309
1310                 $s = array(
1311                         $this->mainPageLink(),
1312                         $this->specialLink( 'recentchanges' )
1313                 );
1314
1315                 if ( $wgOut->isArticleRelated() ) {
1316                         $s[] = $this->editThisPage();
1317                         $s[] = $this->historyLink();
1318                 }
1319                 # Many people don't like this dropdown box
1320                 #$s[] = $this->specialPagesList();
1321
1322                 if( $this->variantLinks() ) {
1323                         $s[] = $this->variantLinks();
1324                 }
1325
1326                 if( $this->extensionTabLinks() ) {
1327                         $s[] = $this->extensionTabLinks();
1328                 }
1329
1330                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1331                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1332         }
1333
1334         /**
1335          * Compatibility for extensions adding functionality through tabs.
1336          * Eventually these old skins should be replaced with SkinTemplate-based
1337          * versions, sigh...
1338          * @return string
1339          */
1340         function extensionTabLinks() {
1341                 $tabs = array();
1342                 $out = '';
1343                 $s = array();
1344                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1345                 foreach( $tabs as $tab ) {
1346                         $s[] = Xml::element( 'a',
1347                                 array( 'href' => $tab['href'] ),
1348                                 $tab['text'] );
1349                 }
1350
1351                 if( count( $s ) ) {
1352                         global $wgLang;
1353
1354                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1355                         $out .= $wgLang->pipeList( $s );
1356                 }
1357
1358                 return $out;
1359         }
1360
1361         /**
1362          * Language/charset variant links for classic-style skins
1363          * @return string
1364          */
1365         function variantLinks() {
1366                 $s = '';
1367                 /* show links to different language variants */
1368                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1369                 $variants = $wgContLang->getVariants();
1370                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1371                         foreach( $variants as $code ) {
1372                                 $varname = $wgContLang->getVariantname( $code );
1373                                 if( $varname == 'disable' ) {
1374                                         continue;
1375                                 }
1376                                 $s = $wgLang->pipeList( array(
1377                                         $s,
1378                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1379                                 ) );
1380                         }
1381                 }
1382                 return $s;
1383         }
1384
1385         function bottomLinks() {
1386                 global $wgOut, $wgUser, $wgUseTrackbacks;
1387                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1388
1389                 $s = '';
1390                 if ( $wgOut->isArticleRelated() ) {
1391                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1392                         if ( $wgUser->isLoggedIn() ) {
1393                                 $element[] = $this->watchThisPage();
1394                         }
1395                         $element[] = $this->talkLink();
1396                         $element[] = $this->historyLink();
1397                         $element[] = $this->whatLinksHere();
1398                         $element[] = $this->watchPageLinksLink();
1399
1400                         if( $wgUseTrackbacks ) {
1401                                 $element[] = $this->trackbackLink();
1402                         }
1403
1404                         if (
1405                                 $this->mTitle->getNamespace() == NS_USER ||
1406                                 $this->mTitle->getNamespace() == NS_USER_TALK
1407                         )
1408                         {
1409                                 $id = User::idFromName( $this->mTitle->getText() );
1410                                 $ip = User::isIP( $this->mTitle->getText() );
1411
1412                                 # Both anons and non-anons have contributions list
1413                                 if( $id || $ip ) {
1414                                         $element[] = $this->userContribsLink();
1415                                 }
1416                                 if( $this->showEmailUser( $id ) ) {
1417                                         $element[] = $this->emailUserLink();
1418                                 }
1419                         }
1420
1421                         $s = implode( $element, $sep );
1422
1423                         if ( $this->mTitle->getArticleId() ) {
1424                                 $s .= "\n<br />";
1425                                 // Delete/protect/move links for privileged users
1426                                 if( $wgUser->isAllowed( 'delete' ) ) {
1427                                         $s .= $this->deleteThisPage();
1428                                 }
1429                                 if( $wgUser->isAllowed( 'protect' ) ) {
1430                                         $s .= $sep . $this->protectThisPage();
1431                                 }
1432                                 if( $wgUser->isAllowed( 'move' ) ) {
1433                                         $s .= $sep . $this->moveThisPage();
1434                                 }
1435                         }
1436                         $s .= "<br />\n" . $this->otherLanguages();
1437                 }
1438
1439                 return $s;
1440         }
1441
1442         function pageStats() {
1443                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1444                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1445
1446                 $oldid = $wgRequest->getVal( 'oldid' );
1447                 $diff = $wgRequest->getVal( 'diff' );
1448                 if ( !$wgOut->isArticle() ) {
1449                         return '';
1450                 }
1451                 if( !$wgArticle instanceof Article ) {
1452                         return '';
1453                 }
1454                 if ( isset( $oldid ) || isset( $diff ) ) {
1455                         return '';
1456                 }
1457                 if ( 0 == $wgArticle->getID() ) {
1458                         return '';
1459                 }
1460
1461                 $s = '';
1462                 if ( !$wgDisableCounters ) {
1463                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1464                         if ( $count ) {
1465                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1466                         }
1467                 }
1468
1469                 if( $wgMaxCredits != 0 ) {
1470                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1471                 } else {
1472                         $s .= $this->lastModified();
1473                 }
1474
1475                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1476                         $dbr = wfGetDB( DB_SLAVE );
1477                         $res = $dbr->select(
1478                                 'watchlist',
1479                                 array( 'COUNT(*) AS n' ),
1480                                 array(
1481                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1482                                         'wl_namespace' => $this->mTitle->getNamespace()
1483                                 ),
1484                                 __METHOD__
1485                         );
1486                         $x = $dbr->fetchObject( $res );
1487
1488                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1489                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1490                         );
1491                 }
1492
1493                 return $s . ' ' .  $this->getCopyright();
1494         }
1495
1496         function getCopyright( $type = 'detect' ) {
1497                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1498
1499                 if ( $type == 'detect' ) {
1500                         $diff = $wgRequest->getVal( 'diff' );
1501                         $isCur = $wgArticle && $wgArticle->isCurrent();
1502                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1503                                 $type = 'history';
1504                         } else {
1505                                 $type = 'normal';
1506                         }
1507                 }
1508
1509                 if ( $type == 'history' ) {
1510                         $msg = 'history_copyright';
1511                 } else {
1512                         $msg = 'copyright';
1513                 }
1514
1515                 $out = '';
1516                 if( $wgRightsPage ) {
1517                         $title = Title::newFromText( $wgRightsPage );
1518                         $link = $this->linkKnown( $title, $wgRightsText );
1519                 } elseif( $wgRightsUrl ) {
1520                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1521                 } elseif( $wgRightsText ) {
1522                         $link = $wgRightsText;
1523                 } else {
1524                         # Give up now
1525                         return $out;
1526                 }
1527                 // Allow for site and per-namespace customization of copyright notice.
1528                 $forContent = true;
1529                 if( isset( $wgArticle ) ) {
1530                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1531                 }
1532
1533                 if ( $forContent ) {
1534                         $out .= wfMsgForContent( $msg, $link );
1535                 } else {
1536                         $out .= wfMsg( $msg, $link );
1537                 }
1538                 return $out;
1539         }
1540
1541         function getCopyrightIcon() {
1542                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1543                 $out = '';
1544                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1545                         $out = $wgCopyrightIcon;
1546                 } elseif ( $wgRightsIcon ) {
1547                         $icon = htmlspecialchars( $wgRightsIcon );
1548                         if ( $wgRightsUrl ) {
1549                                 $url = htmlspecialchars( $wgRightsUrl );
1550                                 $out .= '<a href="'.$url.'">';
1551                         }
1552                         $text = htmlspecialchars( $wgRightsText );
1553                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1554                         if ( $wgRightsUrl ) {
1555                                 $out .= '</a>';
1556                         }
1557                 }
1558                 return $out;
1559         }
1560
1561         /**
1562          * Gets the powered by MediaWiki icon.
1563          * @return string
1564          */
1565         function getPoweredBy() {
1566                 global $wgStylePath;
1567                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1568                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1569                 return $img;
1570         }
1571
1572         function lastModified() {
1573                 global $wgLang, $wgArticle;
1574                 if( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1575                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1576                 } else {
1577                         $timestamp = $wgArticle->getTimestamp();
1578                 }
1579                 if ( $timestamp ) {
1580                         $d = $wgLang->date( $timestamp, true );
1581                         $t = $wgLang->time( $timestamp, true );
1582                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1583                 } else {
1584                         $s = '';
1585                 }
1586                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1587                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1588                 }
1589                 return $s;
1590         }
1591
1592         function logoText( $align = '' ) {
1593                 if ( $align != '' ) {
1594                         $a = " align='{$align}'";
1595                 } else {
1596                         $a = '';
1597                 }
1598
1599                 $mp = wfMsg( 'mainpage' );
1600                 $mptitle = Title::newMainPage();
1601                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1602
1603                 $logourl = $this->getLogo();
1604                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1605                 return $s;
1606         }
1607
1608         /**
1609          * Show a drop-down box of special pages
1610          */
1611         function specialPagesList() {
1612                 global $wgContLang, $wgServer, $wgRedirectScript;
1613                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1614                 foreach ( $pages as $name => $page ) {
1615                         $pages[$name] = $page->getDescription();
1616                 }
1617
1618                 $go = wfMsg( 'go' );
1619                 $sp = wfMsg( 'specialpages' );
1620                 $spp = $wgContLang->specialPage( 'Specialpages' );
1621
1622                 $s = '<form id="specialpages" method="get" ' .
1623                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1624                 $s .= "<select name=\"wpDropdown\">\n";
1625                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1626
1627
1628                 foreach ( $pages as $name => $desc ) {
1629                         $p = $wgContLang->specialPage( $name );
1630                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1631                 }
1632                 $s .= "</select>\n";
1633                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1634                 $s .= "</form>\n";
1635                 return $s;
1636         }
1637
1638         /**
1639          * Gets the link to the wiki's main page.
1640          * @return string
1641          */
1642         function mainPageLink() {
1643                 $s = $this->link(
1644                         Title::newMainPage(),
1645                         wfMsg( 'mainpage' ),
1646                         array(),
1647                         array(),
1648                         array( 'known', 'noclasses' )
1649                 );
1650                 return $s;
1651         }
1652
1653         private function footerLink( $desc, $page ) {
1654                 // if the link description has been set to "-" in the default language,
1655                 if ( wfMsgForContent( $desc )  == '-') {
1656                         // then it is disabled, for all languages.
1657                         return '';
1658                 } else {
1659                         // Otherwise, we display the link for the user, described in their
1660                         // language (which may or may not be the same as the default language),
1661                         // but we make the link target be the one site-wide page.
1662                         $title = Title::newFromText( wfMsgForContent( $page ) );
1663                         return $this->linkKnown(
1664                                 $title,
1665                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1666                         );
1667                 }
1668         }
1669
1670         /**
1671          * Gets the link to the wiki's privacy policy page.
1672          */
1673         function privacyLink() {
1674                 return $this->footerLink( 'privacy', 'privacypage' );
1675         }
1676
1677         /**
1678          * Gets the link to the wiki's about page.
1679          */
1680         function aboutLink() {
1681                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1682         }
1683
1684         /**
1685          * Gets the link to the wiki's general disclaimers page.
1686          */
1687         function disclaimerLink() {
1688                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1689         }
1690
1691         function editThisPage() {
1692                 global $wgOut;
1693
1694                 if ( !$wgOut->isArticleRelated() ) {
1695                         $s = wfMsg( 'protectedpage' );
1696                 } else {
1697                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1698                                 $t = wfMsg( 'editthispage' );
1699                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1700                                 $t = wfMsg( 'create-this-page' );
1701                         } else {
1702                                 $t = wfMsg( 'viewsource' );
1703                         }
1704
1705                         $s = $this->link(
1706                                 $this->mTitle,
1707                                 $t,
1708                                 array(),
1709                                 $this->editUrlOptions(),
1710                                 array( 'known', 'noclasses' )
1711                         );
1712                 }
1713                 return $s;
1714         }
1715
1716         /**
1717          * Return URL options for the 'edit page' link.
1718          * This may include an 'oldid' specifier, if the current page view is such.
1719          *
1720          * @return array
1721          * @private
1722          */
1723         function editUrlOptions() {
1724                 global $wgArticle;
1725
1726                 $options = array( 'action' => 'edit' );
1727
1728                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1729                         $options['oldid'] = intval( $this->mRevisionId );
1730                 }
1731
1732                 return $options;
1733         }
1734
1735         function deleteThisPage() {
1736                 global $wgUser, $wgRequest;
1737
1738                 $diff = $wgRequest->getVal( 'diff' );
1739                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1740                         $t = wfMsg( 'deletethispage' );
1741
1742                         $s = $this->link(
1743                                 $this->mTitle,
1744                                 $t,
1745                                 array(),
1746                                 array( 'action' => 'delete' ),
1747                                 array( 'known', 'noclasses' )
1748                         );
1749                 } else {
1750                         $s = '';
1751                 }
1752                 return $s;
1753         }
1754
1755         function protectThisPage() {
1756                 global $wgUser, $wgRequest;
1757
1758                 $diff = $wgRequest->getVal( 'diff' );
1759                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1760                         if ( $this->mTitle->isProtected() ) {
1761                                 $text = wfMsg( 'unprotectthispage' );
1762                                 $query = array( 'action' => 'unprotect' );
1763                         } else {
1764                                 $text = wfMsg( 'protectthispage' );
1765                                 $query = array( 'action' => 'protect' );
1766                         }
1767
1768                         $s = $this->link(
1769                                 $this->mTitle,
1770                                 $text,
1771                                 array(),
1772                                 $query,
1773                                 array( 'known', 'noclasses' )
1774                         );
1775                 } else {
1776                         $s = '';
1777                 }
1778                 return $s;
1779         }
1780
1781         function watchThisPage() {
1782                 global $wgOut;
1783                 ++$this->mWatchLinkNum;
1784
1785                 if ( $wgOut->isArticleRelated() ) {
1786                         if ( $this->mTitle->userIsWatching() ) {
1787                                 $text = wfMsg( 'unwatchthispage' );
1788                                 $query = array( 'action' => 'unwatch' );
1789                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1790                         } else {
1791                                 $text = wfMsg( 'watchthispage' );
1792                                 $query = array( 'action' => 'watch' );
1793                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1794                         }
1795
1796                         $s = $this->link(
1797                                 $this->mTitle,
1798                                 $text,
1799                                 array( 'id' => $id ),
1800                                 $query,
1801                                 array( 'known', 'noclasses' )
1802                         );
1803                 } else {
1804                         $s = wfMsg( 'notanarticle' );
1805                 }
1806                 return $s;
1807         }
1808
1809         function moveThisPage() {
1810                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1811                         return $this->link(
1812                                 SpecialPage::getTitleFor( 'Movepage' ),
1813                                 wfMsg( 'movethispage' ),
1814                                 array(),
1815                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1816                                 array( 'known', 'noclasses' )
1817                         );
1818                 } else {
1819                         // no message if page is protected - would be redundant
1820                         return '';
1821                 }
1822         }
1823
1824         function historyLink() {
1825                 return $this->link(
1826                         $this->mTitle,
1827                         wfMsgHtml( 'history' ),
1828                         array( 'rel' => 'archives' ),
1829                         array( 'action' => 'history' )
1830                 );
1831         }
1832
1833         function whatLinksHere() {
1834                 return $this->link(
1835                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1836                         wfMsgHtml( 'whatlinkshere' ),
1837                         array(),
1838                         array(),
1839                         array( 'known', 'noclasses' )
1840                 );
1841         }
1842
1843         function userContribsLink() {
1844                 return $this->link(
1845                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1846                         wfMsgHtml( 'contributions' ),
1847                         array(),
1848                         array(),
1849                         array( 'known', 'noclasses' )
1850                 );
1851         }
1852
1853         function showEmailUser( $id ) {
1854                 global $wgUser;
1855                 $targetUser = User::newFromId( $id );
1856                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1857                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1858         }
1859
1860         function emailUserLink() {
1861                 return $this->link(
1862                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1863                         wfMsg( 'emailuser' ),
1864                         array(),
1865                         array(),
1866                         array( 'known', 'noclasses' )
1867                 );
1868         }
1869
1870         function watchPageLinksLink() {
1871                 global $wgOut;
1872                 if ( !$wgOut->isArticleRelated() ) {
1873                         return '(' . wfMsg( 'notanarticle' ) . ')';
1874                 } else {
1875                         return $this->link(
1876                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1877                                 wfMsg( 'recentchangeslinked-toolbox' ),
1878                                 array(),
1879                                 array(),
1880                                 array( 'known', 'noclasses' )
1881                         );
1882                 }
1883         }
1884
1885         function trackbackLink() {
1886                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1887                         . wfMsg( 'trackbacklink' ) . '</a>';
1888         }
1889
1890         function otherLanguages() {
1891                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1892
1893                 if ( $wgHideInterlanguageLinks ) {
1894                         return '';
1895                 }
1896
1897                 $a = $wgOut->getLanguageLinks();
1898                 if ( 0 == count( $a ) ) {
1899                         return '';
1900                 }
1901
1902                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1903                 $first = true;
1904                 if( $wgContLang->isRTL() ) {
1905                         $s .= '<span dir="LTR">';
1906                 }
1907                 foreach( $a as $l ) {
1908                         if ( !$first ) {
1909                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1910                         }
1911                         $first = false;
1912
1913                         $nt = Title::newFromText( $l );
1914                         $url = $nt->escapeFullURL();
1915                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1916                         $title = htmlspecialchars( $nt->getText() );
1917
1918                         if ( $text == '' ) {
1919                                 $text = $l;
1920                         }
1921                         $style = $this->getExternalLinkAttributes();
1922                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1923                 }
1924                 if( $wgContLang->isRTL() ) {
1925                         $s .= '</span>';
1926                 }
1927                 return $s;
1928         }
1929
1930         function talkLink() {
1931                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1932                         # No discussion links for special pages
1933                         return '';
1934                 }
1935
1936                 $linkOptions = array();
1937
1938                 if( $this->mTitle->isTalkPage() ) {
1939                         $link = $this->mTitle->getSubjectPage();
1940                         switch( $link->getNamespace() ) {
1941                                 case NS_MAIN:
1942                                         $text = wfMsg( 'articlepage' );
1943                                         break;
1944                                 case NS_USER:
1945                                         $text = wfMsg( 'userpage' );
1946                                         break;
1947                                 case NS_PROJECT:
1948                                         $text = wfMsg( 'projectpage' );
1949                                         break;
1950                                 case NS_FILE:
1951                                         $text = wfMsg( 'imagepage' );
1952                                         # Make link known if image exists, even if the desc. page doesn't.
1953                                         if( wfFindFile( $link ) )
1954                                                 $linkOptions[] = 'known';
1955                                         break;
1956                                 case NS_MEDIAWIKI:
1957                                         $text = wfMsg( 'mediawikipage' );
1958                                         break;
1959                                 case NS_TEMPLATE:
1960                                         $text = wfMsg( 'templatepage' );
1961                                         break;
1962                                 case NS_HELP:
1963                                         $text = wfMsg( 'viewhelppage' );
1964                                         break;
1965                                 case NS_CATEGORY:
1966                                         $text = wfMsg( 'categorypage' );
1967                                         break;
1968                                 default:
1969                                         $text = wfMsg( 'articlepage' );
1970                         }
1971                 } else {
1972                         $link = $this->mTitle->getTalkPage();
1973                         $text = wfMsg( 'talkpage' );
1974                 }
1975
1976                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1977
1978                 return $s;
1979         }
1980
1981         function commentLink() {
1982                 global $wgOut;
1983
1984                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1985                         return '';
1986                 }
1987
1988                 # __NEWSECTIONLINK___ changes behaviour here
1989                 # If it is present, the link points to this page, otherwise
1990                 # it points to the talk page
1991                 if( $this->mTitle->isTalkPage() ) {
1992                         $title = $this->mTitle;
1993                 } elseif( $wgOut->showNewSectionLink() ) {
1994                         $title = $this->mTitle;
1995                 } else {
1996                         $title = $this->mTitle->getTalkPage();
1997                 }
1998
1999                 return $this->link(
2000                         $title,
2001                         wfMsg( 'postcomment' ),
2002                         array(),
2003                         array(
2004                                 'action' => 'edit',
2005                                 'section' => 'new'
2006                         ),
2007                         array( 'known', 'noclasses' )
2008                 );
2009         }
2010
2011         function getUploadLink() {
2012                 global $wgUploadNavigationUrl;
2013
2014                 if( $wgUploadNavigationUrl ) {
2015                         # Using an empty class attribute to avoid automatic setting of "external" class
2016                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '') );
2017                 } else {
2018                         return $this->link(
2019                                 SpecialPage::getTitleFor('Upload'),
2020                                 wfMsgHtml( 'upload' ),
2021                                 array(),
2022                                 array(),
2023                                 array( 'known', 'noclasses' )
2024                         );
2025                 }
2026         }
2027
2028         /* these are used extensively in SkinTemplate, but also some other places */
2029         static function makeMainPageUrl( $urlaction = '' ) {
2030                 $title = Title::newMainPage();
2031                 self::checkTitle( $title, '' );
2032                 return $title->getLocalURL( $urlaction );
2033         }
2034
2035         static function makeSpecialUrl( $name, $urlaction = '' ) {
2036                 $title = SpecialPage::getTitleFor( $name );
2037                 return $title->getLocalURL( $urlaction );
2038         }
2039
2040         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2041                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2042                 return $title->getLocalURL( $urlaction );
2043         }
2044
2045         static function makeI18nUrl( $name, $urlaction = '' ) {
2046                 $title = Title::newFromText( wfMsgForContent( $name ) );
2047                 self::checkTitle( $title, $name );
2048                 return $title->getLocalURL( $urlaction );
2049         }
2050
2051         static function makeUrl( $name, $urlaction = '' ) {
2052                 $title = Title::newFromText( $name );
2053                 self::checkTitle( $title, $name );
2054                 return $title->getLocalURL( $urlaction );
2055         }
2056
2057         /**
2058          * If url string starts with http, consider as external URL, else
2059          * internal
2060          */
2061         static function makeInternalOrExternalUrl( $name ) {
2062                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2063                         return $name;
2064                 } else {
2065                         return self::makeUrl( $name );
2066                 }
2067         }
2068
2069         # this can be passed the NS number as defined in Language.php
2070         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2071                 $title = Title::makeTitleSafe( $namespace, $name );
2072                 self::checkTitle( $title, $name );
2073                 return $title->getLocalURL( $urlaction );
2074         }
2075
2076         /* these return an array with the 'href' and boolean 'exists' */
2077         static function makeUrlDetails( $name, $urlaction = '' ) {
2078                 $title = Title::newFromText( $name );
2079                 self::checkTitle( $title, $name );
2080                 return array(
2081                         'href' => $title->getLocalURL( $urlaction ),
2082                         'exists' => $title->getArticleID() != 0 ? true : false
2083                 );
2084         }
2085
2086         /**
2087          * Make URL details where the article exists (or at least it's convenient to think so)
2088          */
2089         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2090                 $title = Title::newFromText( $name );
2091                 self::checkTitle( $title, $name );
2092                 return array(
2093                         'href' => $title->getLocalURL( $urlaction ),
2094                         'exists' => true
2095                 );
2096         }
2097
2098         # make sure we have some title to operate on
2099         static function checkTitle( &$title, $name ) {
2100                 if( !is_object( $title ) ) {
2101                         $title = Title::newFromText( $name );
2102                         if( !is_object( $title ) ) {
2103                                 $title = Title::newFromText( '--error: link target missing--' );
2104                         }
2105                 }
2106         }
2107
2108         /**
2109          * Build an array that represents the sidebar(s), the navigation bar among them
2110          *
2111          * @return array
2112          */
2113         function buildSidebar() {
2114                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2115                 global $wgLang;
2116                 wfProfileIn( __METHOD__ );
2117
2118                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2119
2120                 if ( $wgEnableSidebarCache ) {
2121                         $cachedsidebar = $parserMemc->get( $key );
2122                         if ( $cachedsidebar ) {
2123                                 wfProfileOut( __METHOD__ );
2124                                 return $cachedsidebar;
2125                         }
2126                 }
2127
2128                 $bar = array();
2129                 $this->addToSidebar( $bar, 'sidebar' );
2130
2131                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2132                 if ( $wgEnableSidebarCache ) {
2133                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2134                 }
2135                 wfProfileOut( __METHOD__ );
2136                 return $bar;
2137         }
2138         /**
2139          * Add content from a sidebar system message
2140          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2141          *
2142          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2143          *
2144          * @param &$bar array
2145          * @param $message String
2146          */
2147         function addToSidebar( &$bar, $message ) {
2148                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2149         }
2150
2151         /**
2152          * Add content from plain text
2153          * @since 1.17
2154          * @param &$bar array
2155          * @param $text string
2156          */
2157         function addToSidebarPlain( &$bar, $text ) {
2158                 $lines = explode( "\n", $text );
2159                 $wikiBar = array(); # We need to handle the wikitext on a different variable, to avoid trying to do an array operation on text, which would be a fatal error.
2160
2161                 $heading = '';
2162                 foreach( $lines as $line ) {
2163                         if( strpos( $line, '*' ) !== 0 ) {
2164                                 continue;
2165                         }
2166                         if( strpos( $line, '**') !== 0 ) {
2167                                 $heading = trim( $line, '* ' );
2168                                 if( !array_key_exists( $heading, $bar ) ) {
2169                                         $bar[$heading] = array();
2170                                 }
2171                         } else {
2172                                 $line = trim( $line, '* ' );
2173                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2174                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2175                                         $link = wfMsgForContent( $line[0] );
2176                                         if( $link == '-' ) {
2177                                                 continue;
2178                                         }
2179
2180                                         $text = wfMsgExt( $line[1], 'parsemag' );
2181                                         if( wfEmptyMsg( $line[1], $text ) ) {
2182                                                 $text = $line[1];
2183                                         }
2184                                         if( wfEmptyMsg( $line[0], $link ) ) {
2185                                                 $link = $line[0];
2186                                         }
2187
2188                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2189                                                 $href = $link;
2190                                         } else {
2191                                                 $title = Title::newFromText( $link );
2192                                                 if ( $title ) {
2193                                                         $title = $title->fixSpecialName();
2194                                                         $href = $title->getLocalURL();
2195                                                 } else {
2196                                                         $href = 'INVALID-TITLE';
2197                                                 }
2198                                         }
2199
2200                                         $bar[$heading][] = array(
2201                                                 'text' => $text,
2202                                                 'href' => $href,
2203                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2204                                                 'active' => false
2205                                         );
2206                                 } else if ( (substr($line, 0, 2) == '{{') && (substr($line, -2) == '}}') ) {
2207                                         global $wgParser, $wgTitle;
2208
2209                                         $line = substr($line, 2, strlen($line) - 4 );
2210
2211                                         if (is_null($wgParser->mOptions))
2212                                                 $wgParser->mOptions = new ParserOptions();
2213
2214                                         $wgParser->mOptions->setEditSection(false);
2215                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2216                                 } else {
2217                                         continue;
2218                                 }
2219                         }
2220                 }
2221
2222                 if ( count($wikiBar) > 0 )
2223                         $bar = array_merge($bar, $wikiBar);
2224
2225                 return $bar;
2226         }
2227
2228         /**
2229          * Should we include common/wikiprintable.css?  Skins that have their own
2230          * print stylesheet should override this and return false.  (This is an
2231          * ugly hack to get Monobook to play nicely with
2232          * OutputPage::headElement().)
2233          *
2234          * @return bool
2235          */
2236         public function commonPrintStylesheet() {
2237                 return true;
2238         }
2239
2240         /**
2241          * Gets new talk page messages for the current user.
2242          * @return MediaWiki message or if no new talk page messages, nothing
2243          */
2244         function getNewtalks() {
2245                 global $wgUser, $wgOut;
2246                 $newtalks = $wgUser->getNewMessageLinks();
2247                 $ntl = '';
2248
2249                 if( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2250                         $userTitle = $this->mUser->getUserPage();
2251                         $userTalkTitle = $userTitle->getTalkPage();
2252
2253                         if( !$userTalkTitle->equals( $this->mTitle ) ) {
2254                                 $newMessagesLink = $this->link(
2255                                         $userTalkTitle,
2256                                         wfMsgHtml( 'newmessageslink' ),
2257                                         array(),
2258                                         array( 'redirect' => 'no' ),
2259                                         array( 'known', 'noclasses' )
2260                                 );
2261
2262                                 $newMessagesDiffLink = $this->link(
2263                                         $userTalkTitle,
2264                                         wfMsgHtml( 'newmessagesdifflink' ),
2265                                         array(),
2266                                         array( 'diff' => 'cur' ),
2267                                         array( 'known', 'noclasses' )
2268                                 );
2269
2270                                 $ntl = wfMsg(
2271                                         'youhavenewmessages',
2272                                         $newMessagesLink,
2273                                         $newMessagesDiffLink
2274                                 );
2275                                 # Disable Squid cache
2276                                 $wgOut->setSquidMaxage( 0 );
2277                         }
2278                 } elseif( count( $newtalks ) ) {
2279                         // _>" " for BC <= 1.16
2280                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2281                         $msgs = array();
2282                         foreach( $newtalks as $newtalk ) {
2283                                 $msgs[] = Xml::element(
2284                                         'a',
2285                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2286                                 );
2287                         }
2288                         $parts = implode( $sep, $msgs );
2289                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2290                         $wgOut->setSquidMaxage( 0 );
2291                 }
2292                 return $ntl;
2293         }
2294
2295 }