includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30
  31         /** Constructor, call parent constructor */
  32         function __construct() {
  33                 parent::__construct();
  34         }
  35
  36         /**
  37          * Fetch the set of available skins.
  38          * @return array of strings
  39          */
  40         static function getSkinNames() {
  41                 global $wgValidSkinNames;
  42                 static $skinsInitialised = false;
  43                 if ( !$skinsInitialised ) {
  44                         # Get a list of available skins
  45                         # Build using the regular expression '^(.*).php$'
  46                         # Array keys are all lower case, array value keep the case used by filename
  47                         #
  48                         wfProfileIn( __METHOD__ . '-init' );
  49                         global $wgStyleDirectory;
  50                         $skinDir = dir( $wgStyleDirectory );
  51
  52                         # while code from www.php.net
  53                         while( false !== ( $file = $skinDir->read() ) ) {
  54                                 // Skip non-PHP files, hidden files, and '.dep' includes
  55                                 $matches = array();
  56                                 if( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  57                                         $aSkin = $matches[1];
  58                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  59                                 }
  60                         }
  61                         $skinDir->close();
  62                         $skinsInitialised = true;
  63                         wfProfileOut( __METHOD__ . '-init' );
  64                 }
  65                 return $wgValidSkinNames;
  66         }
  67
  68         /**
  69          * Fetch the list of usable skins in regards to $wgSkipSkins.
  70          * Useful for Special:Preferences and other places where you
  71          * only want to show skins users _can_ use.
  72          * @return array of strings
  73          */
  74         public static function getUsableSkins() {
  75                 global $wgSkipSkins;
  76                 $usableSkins = self::getSkinNames();
  77                 foreach ( $wgSkipSkins as $skip ) {
  78                         unset( $usableSkins[$skip] );
  79                 }
  80                 return $usableSkins;
  81         }
  82
  83         /**
  84          * Normalize a skin preference value to a form that can be loaded.
  85          * If a skin can't be found, it will fall back to the configured
  86          * default (or the old 'Classic' skin if that's broken).
  87          * @param $key String: 'monobook', 'standard', etc.
  88          * @return string
  89          */
  90         static function normalizeKey( $key ) {
  91                 global $wgDefaultSkin;
  92                 $skinNames = Skin::getSkinNames();
  93
  94                 if( $key == '' ) {
  95                         // Don't return the default immediately;
  96                         // in a misconfiguration we need to fall back.
  97                         $key = $wgDefaultSkin;
  98                 }
  99
 100                 if( isset( $skinNames[$key] ) ) {
 101                         return $key;
 102                 }
 103
 104                 // Older versions of the software used a numeric setting
 105                 // in the user preferences.
 106                 $fallback = array(
 107                         0 => $wgDefaultSkin,
 108                         1 => 'nostalgia',
 109                         2 => 'cologneblue'
 110                 );
 111
 112                 if( isset( $fallback[$key] ) ) {
 113                         $key = $fallback[$key];
 114                 }
 115
 116                 if( isset( $skinNames[$key] ) ) {
 117                         return $key;
 118                 } else {
 119                         return 'monobook';
 120                 }
 121         }
 122
 123         /**
 124          * Factory method for loading a skin of a given type
 125          * @param $key String: 'monobook', 'standard', etc.
 126          * @return Skin
 127          */
 128         static function &newFromKey( $key ) {
 129                 global $wgStyleDirectory;
 130
 131                 $key = Skin::normalizeKey( $key );
 132
 133                 $skinNames = Skin::getSkinNames();
 134                 $skinName = $skinNames[$key];
 135                 $className = 'Skin' . ucfirst( $key );
 136
 137                 # Grab the skin class and initialise it.
 138                 if ( !class_exists( $className ) ) {
 139                         // Preload base classes to work around APC/PHP5 bug
 140                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 141                         if( file_exists( $deps ) ) {
 142                                 include_once( $deps );
 143                         }
 144                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 145
 146                         # Check if we got if not failback to default skin
 147                         if( !class_exists( $className ) ) {
 148                                 # DO NOT die if the class isn't found. This breaks maintenance
 149                                 # scripts and can cause a user account to be unrecoverable
 150                                 # except by SQL manipulation if a previously valid skin name
 151                                 # is no longer valid.
 152                                 wfDebug( "Skin class does not exist: $className\n" );
 153                                 $className = 'SkinMonobook';
 154                                 require_once( "{$wgStyleDirectory}/MonoBook.php" );
 155                         }
 156                 }
 157                 $skin = new $className;
 158                 return $skin;
 159         }
 160
 161         /** @return string path to the skin stylesheet */
 162         function getStylesheet() {
 163                 return 'common/wikistandard.css';
 164         }
 165
 166         /** @return string skin name */
 167         public function getSkinName() {
 168                 return $this->skinname;
 169         }
 170
 171         function qbSetting() {
 172                 global $wgOut, $wgUser;
 173
 174                 if ( $wgOut->isQuickbarSuppressed() ) {
 175                         return 0;
 176                 }
 177                 $q = $wgUser->getOption( 'quickbar', 0 );
 178                 return $q;
 179         }
 180
 181         function initPage( OutputPage $out ) {
 182                 global $wgFavicon, $wgAppleTouchIcon;
 183
 184                 wfProfileIn( __METHOD__ );
 185
 186                 # Generally the order of the favicon and apple-touch-icon links
 187                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 188                 # uses whichever one appears later in the HTML source. Make sure
 189                 # apple-touch-icon is specified first to avoid this.
 190                 if( false !== $wgAppleTouchIcon ) {
 191                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 192                 }
 193
 194                 if( false !== $wgFavicon ) {
 195                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 196                 }
 197
 198                 # OpenSearch description link
 199                 $out->addLink( array(
 200                         'rel' => 'search',
 201                         'type' => 'application/opensearchdescription+xml',
 202                         'href' => wfScript( 'opensearch_desc' ),
 203                         'title' => wfMsgForContent( 'opensearch-desc' ),
 204                 ));
 205
 206                 $this->addMetadataLinks( $out );
 207
 208                 $this->mRevisionId = $out->mRevisionId;
 209
 210                 $this->preloadExistence();
 211
 212                 wfProfileOut( __METHOD__ );
 213         }
 214
 215         /**
 216          * Preload the existence of three commonly-requested pages in a single query
 217          */
 218         function preloadExistence() {
 219                 global $wgUser;
 220
 221                 // User/talk link
 222                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 223
 224                 // Other tab link
 225                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 226                         // nothing
 227                 } elseif ( $this->mTitle->isTalkPage() ) {
 228                         $titles[] = $this->mTitle->getSubjectPage();
 229                 } else {
 230                         $titles[] = $this->mTitle->getTalkPage();
 231                 }
 232
 233                 $lb = new LinkBatch( $titles );
 234                 $lb->execute();
 235         }
 236
 237         /**
 238          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 239          * output.
 240          * @param $out Object: instance of OutputPage
 241          */
 242         function addMetadataLinks( OutputPage $out ) {
 243                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 244                 global $wgRightsPage, $wgRightsUrl;
 245
 246                 if( $out->isArticleRelated() ) {
 247                         # note: buggy CC software only reads first "meta" link
 248                         if( $wgEnableCreativeCommonsRdf ) {
 249                                 $out->addMetadataLink( array(
 250                                         'title' => 'Creative Commons',
 251                                         'type' => 'application/rdf+xml',
 252                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 253                                 );
 254                         }
 255                         if( $wgEnableDublinCoreRdf ) {
 256                                 $out->addMetadataLink( array(
 257                                         'title' => 'Dublin Core',
 258                                         'type' => 'application/rdf+xml',
 259                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 260                                 );
 261                         }
 262                 }
 263                 $copyright = '';
 264                 if( $wgRightsPage ) {
 265                         $copy = Title::newFromText( $wgRightsPage );
 266                         if( $copy ) {
 267                                 $copyright = $copy->getLocalURL();
 268                         }
 269                 }
 270                 if( !$copyright && $wgRightsUrl ) {
 271                         $copyright = $wgRightsUrl;
 272                 }
 273                 if( $copyright ) {
 274                         $out->addLink( array(
 275                                 'rel' => 'copyright',
 276                                 'href' => $copyright )
 277                         );
 278                 }
 279         }
 280
 281         /**
 282          * Set some local variables
 283          */
 284         protected function setMembers() {
 285                 global $wgUser;
 286                 $this->mUser = $wgUser;
 287                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 288                 $this->usercss = false;
 289         }
 290
 291         /**
 292          * Set the title
 293          * @param $t Title object to use
 294          */
 295         public function setTitle( $t ) {
 296                 $this->mTitle = $t;
 297         }
 298
 299         /** Get the title */
 300         public function getTitle() {
 301                 return $this->mTitle;
 302         }
 303
 304         /**
 305          * Outputs the HTML generated by other functions.
 306          * @param $out Object: instance of OutputPage
 307          */
 308         function outputPage( OutputPage $out ) {
 309                 global $wgDebugComments;
 310                 wfProfileIn( __METHOD__ );
 311
 312                 $this->setMembers();
 313                 $this->initPage( $out );
 314
 315                 // See self::afterContentHook() for documentation
 316                 $afterContent = $this->afterContentHook();
 317
 318                 $out->out( $out->headElement( $this ) );
 319
 320                 if ( $wgDebugComments ) {
 321                         $out->out( "<!-- Wiki debugging output:\n" .
 322                           $out->mDebugtext . "-->\n" );
 323                 }
 324
 325                 $out->out( $this->beforeContent() );
 326
 327                 $out->out( $out->mBodytext . "\n" );
 328
 329                 $out->out( $this->afterContent() );
 330
 331                 $out->out( $afterContent );
 332
 333                 $out->out( $this->bottomScripts() );
 334
 335                 $out->out( wfReportTime() );
 336
 337                 $out->out( "\n</body></html>" );
 338                 wfProfileOut( __METHOD__ );
 339         }
 340
 341         static function makeVariablesScript( $data ) {
 342                 if( $data ) {
 343                         $r = array();
 344                         foreach ( $data as $name => $value ) {
 345                                 $encValue = Xml::encodeJsVar( $value );
 346                                 $r[] = "$name=$encValue";
 347                         }
 348                         $js = 'var ' . implode( ",\n", $r ) . ';';
 349                         return Html::inlineScript( "\n$js\n" );
 350                 } else {
 351                         return '';
 352                 }
 353         }
 354
 355         /**
 356          * Make a <script> tag containing global variables
 357          * @param $skinName string Name of the skin
 358          * The odd calling convention is for backwards compatibility
 359          * @todo FIXME: Make this not depend on $wgTitle!
 360          */
 361         static function makeGlobalVariablesScript( $skinName ) {
 362                 if ( is_array( $skinName ) ) {
 363                         # Weird back-compat stuff.
 364                         $skinName = $skinName['skinname'];
 365                 }
 366                 global $wgScript, $wgTitle, $wgStylePath, $wgUser, $wgScriptExtension;
 367                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 368                 global $wgOut, $wgArticle;
 369                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 370                 global $wgUseAjax, $wgAjaxWatch;
 371                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 372                 global $wgRestrictionTypes;
 373                 global $wgMWSuggestTemplate, $wgDBname, $wgEnableMWSuggest;
 374                 global $wgSitename;
 375
 376                 $ns = $wgTitle->getNamespace();
 377                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 378                 $separatorTransTable = $wgContLang->separatorTransformTable();
 379                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
 380                 $compactSeparatorTransTable = array(
 381                         implode( "\t", array_keys( $separatorTransTable ) ),
 382                         implode( "\t", $separatorTransTable ),
 383                 );
 384                 $digitTransTable = $wgContLang->digitTransformTable();
 385                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
 386                 $compactDigitTransTable = array(
 387                         implode( "\t", array_keys( $digitTransTable ) ),
 388                         implode( "\t", $digitTransTable ),
 389                 );
 390
 391                 $mainPage = Title::newMainPage();
 392                 $vars = array(
 393                         'skin' => $skinName,
 394                         'stylepath' => $wgStylePath,
 395                         'wgUrlProtocols' => wfUrlProtocols(),
 396                         'wgArticlePath' => $wgArticlePath,
 397                         'wgScriptPath' => $wgScriptPath,
 398                         'wgScriptExtension' => $wgScriptExtension,
 399                         'wgScript' => $wgScript,
 400                         'wgVariantArticlePath' => $wgVariantArticlePath,
 401                         'wgActionPaths' => (object)$wgActionPaths,
 402                         'wgServer' => $wgServer,
 403                         'wgCanonicalNamespace' => $nsname,
 404                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 405                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 406                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 407                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 408                         'wgTitle' => $wgTitle->getText(),
 409                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 410                         'wgArticleId' => $wgTitle->getArticleId(),
 411                         'wgIsArticle' => $wgOut->isArticle(),
 412                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 413                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 414                         'wgUserLanguage' => $wgLang->getCode(),
 415                         'wgContentLanguage' => $wgContLang->getCode(),
 416                         'wgBreakFrames' => $wgBreakFrames,
 417                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 418                         'wgVersion' => $wgVersion,
 419                         'wgEnableAPI' => $wgEnableAPI,
 420                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 421                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
 422                         'wgDigitTransformTable' => $compactDigitTransTable,
 423                         'wgMainPageTitle' => $mainPage ? $mainPage->getPrefixedText() : null,
 424                         'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
 425                         'wgNamespaceIds' => $wgContLang->getNamespaceIds(),
 426                         'wgSiteName' => $wgSitename,
 427                         'wgCategories' => $wgOut->getCategories(),
 428                 );
 429                 if ( $wgContLang->hasVariants() ) {
 430                         $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
 431                 }
 432
 433                 // if on upload page output the extension list & js_upload
 434                 if( SpecialPage::resolveAlias( $wgTitle->getDBkey() ) == 'Upload' ) {
 435                         global $wgFileExtensions;
 436                         $vars['wgFileExtensions'] = $wgFileExtensions;
 437                 }
 438
 439                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 440                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 441                         $vars['wgDBname'] = $wgDBname;
 442                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 443                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 444                 }
 445
 446                 foreach( $wgRestrictionTypes as $type ) {
 447                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 448                 }
 449
 450                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 451                         $msgs = (object)array();
 452                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching',
 453                                 'tooltip-ca-watch', 'tooltip-ca-unwatch' ) as $msgName ) {
 454                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 455                         }
 456                         $vars['wgAjaxWatch'] = $msgs;
 457                 }
 458
 459                 // Allow extensions to add their custom variables to the global JS variables
 460                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 461
 462                 return self::makeVariablesScript( $vars );
 463         }
 464
 465         /**
 466          * To make it harder for someone to slip a user a fake
 467          * user-JavaScript or user-CSS preview, a random token
 468          * is associated with the login session. If it's not
 469          * passed back with the preview request, we won't render
 470          * the code.
 471          *
 472          * @param $action String: 'edit', 'submit' etc.
 473          * @return bool
 474          */
 475         public function userCanPreview( $action ) {
 476                 global $wgRequest, $wgUser;
 477
 478                 if( $action != 'submit' ) {
 479                         return false;
 480                 }
 481                 if( !$wgRequest->wasPosted() ) {
 482                         return false;
 483                 }
 484                 if( !$this->mTitle->userCanEditCssSubpage() ) {
 485                         return false;
 486                 }
 487                 if( !$this->mTitle->userCanEditJsSubpage() ) {
 488                         return false;
 489                 }
 490                 return $wgUser->matchEditToken(
 491                         $wgRequest->getVal( 'wpEditToken' ) );
 492         }
 493
 494         /**
 495          * Generated JavaScript action=raw&gen=js
 496          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 497          * nated together.  For some bizarre reason, it does *not* return any
 498          * custom user JS from subpages.  Huh?
 499          *
 500          * There's absolutely no reason to have separate Monobook/Common JSes.
 501          * Any JS that cares can just check the skin variable generated at the
 502          * top.  For now Monobook.js will be maintained, but it should be consi-
 503          * dered deprecated.
 504          *
 505          * @param $skinName String: If set, overrides the skin name
 506          * @return string
 507          */
 508         public function generateUserJs( $skinName = null ) {
 509                 global $wgStylePath;
 510
 511                 wfProfileIn( __METHOD__ );
 512                 if( !$skinName ) {
 513                         $skinName = $this->getSkinName();
 514                 }
 515
 516                 $s = "/* generated javascript */\n";
 517                 $s .= "var skin = '" . Xml::escapeJsString( $skinName ) . "';\n";
 518                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 519                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 520                 $commonJs = wfMsgExt( 'common.js', 'content' );
 521                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 522                         $s .= $commonJs;
 523                 }
 524
 525                 $s .= "\n\n/* MediaWiki:" . ucfirst( $skinName ) . ".js */\n";
 526                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 527                 // by checking for default message content
 528                 $msgKey = ucfirst( $skinName ) . '.js';
 529                 $userJS = wfMsgExt( $msgKey, 'content' );
 530                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 531                         $s .= $userJS;
 532                 }
 533
 534                 wfProfileOut( __METHOD__ );
 535                 return $s;
 536         }
 537
 538         /**
 539          * Generate user stylesheet for action=raw&gen=css
 540          */
 541         public function generateUserStylesheet() {
 542                 wfProfileIn( __METHOD__ );
 543                 $s = "/* generated user stylesheet */\n" .
 544                         $this->reallyGenerateUserStylesheet();
 545                 wfProfileOut( __METHOD__ );
 546                 return $s;
 547         }
 548
 549         /**
 550          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 551          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 552          */
 553         protected function reallyGenerateUserStylesheet() {
 554                 global $wgUser;
 555                 $s = '';
 556                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 557                         $underline = $undopt ? 'underline' : 'none';
 558                         $s .= "a { text-decoration: $underline; }\n";
 559                 }
 560                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 561                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 562                 } else {
 563                         $s .= <<<CSS
 564 a.new, #quickbar a.new,
 565 a.stub, #quickbar a.stub {
 566         color: inherit;
 567 }
 568 a.new:after, #quickbar a.new:after {
 569         content: "?";
 570         color: #CC2200;
 571 }
 572 a.stub:after, #quickbar a.stub:after {
 573         content: "!";
 574         color: #772233;
 575 }
 576 CSS;
 577                 }
 578                 if( $wgUser->getOption( 'justify' ) ) {
 579                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 580                 }
 581                 if( !$wgUser->getOption( 'showtoc' ) ) {
 582                         $s .= "#toc { display: none; }\n";
 583                 }
 584                 if( !$wgUser->getOption( 'editsection' ) ) {
 585                         $s .= ".editsection { display: none; }\n";
 586                 }
 587                 $fontstyle = $wgUser->getOption( 'editfont' );
 588                 if ( $fontstyle !== 'default' ) {
 589                         $s .= "textarea { font-family: $fontstyle; }\n";
 590                 }
 591                 return $s;
 592         }
 593
 594         /**
 595          * @private
 596          */
 597         function setupUserCss( OutputPage $out ) {
 598                 global $wgRequest, $wgContLang, $wgUser;
 599                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 600
 601                 wfProfileIn( __METHOD__ );
 602
 603                 $this->setupSkinUserCss( $out );
 604
 605                 $siteargs = array(
 606                         'action' => 'raw',
 607                         'maxage' => $wgSquidMaxage,
 608                 );
 609
 610                 // Add any extension CSS
 611                 foreach ( $out->getExtStyle() as $url ) {
 612                         $out->addStyle( $url );
 613                 }
 614
 615                 // If we use the site's dynamic CSS, throw that in, too
 616                 // Per-site custom styles
 617                 if( $wgUseSiteCss ) {
 618                         global $wgHandheldStyle;
 619                         $query = wfArrayToCGI( self::getDynamicStylesheetQuery() );
 620                         # Site settings must override extension css! (bug 15025)
 621                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 622                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 623                         if( $wgHandheldStyle ) {
 624                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 625                         }
 626                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 627                 }
 628
 629                 global $wgAllowUserCssPrefs;
 630                 if( $wgAllowUserCssPrefs ){
 631                         if( $wgUser->isLoggedIn() ) {
 632                                 // Ensure that logged-in users' generated CSS isn't clobbered
 633                                 // by anons' publicly cacheable generated CSS.
 634                                 $siteargs['smaxage'] = '0';
 635                                 $siteargs['ts'] = $wgUser->mTouched;
 636                         }
 637                         // Per-user styles based on preferences
 638                         $siteargs['gen'] = 'css';
 639                         if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 640                                 $siteargs['useskin'] = $us;
 641                         }
 642                         $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 643                 }
 644
 645                 // Per-user custom style pages
 646                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 647                         $action = $wgRequest->getVal( 'action' );
 648                         # If we're previewing the CSS page, use it
 649                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 650                                 // @FIXME: properly escape the cdata!
 651                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 652                         } else {
 653                                 $names = array( 'common', $this->getSkinName() );
 654                                 foreach( $names as $name ) {
 655                                         $out->addStyle( self::makeUrl(
 656                                                 $this->userpage . '/' . $name . '.css',
 657                                                 'action=raw&ctype=text/css' )
 658                                         );
 659                                 }
 660                         }
 661                 }
 662
 663                 wfProfileOut( __METHOD__ );
 664         }
 665
 666         /**
 667          * Get the query to generate a dynamic stylesheet
 668          *
 669          * @return array
 670          */
 671         public static function getDynamicStylesheetQuery() {
 672                 global $wgSquidMaxage;
 673                 return array(
 674                                 'action' => 'raw',
 675                                 'maxage' => $wgSquidMaxage,
 676                                 'usemsgcache' => 'yes',
 677                                 'ctype' => 'text/css',
 678                                 'smaxage' => $wgSquidMaxage,
 679                         );
 680         }
 681
 682         /**
 683          * Add skin specific stylesheets
 684          * @param $out OutputPage
 685          */
 686         function setupSkinUserCss( OutputPage $out ) {
 687                 $out->addStyle( 'common/shared.css' );
 688                 $out->addStyle( 'common/oldshared.css' );
 689                 $out->addStyle( $this->getStylesheet() );
 690                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 691         }
 692
 693         function getPageClasses( $title ) {
 694                 $numeric = 'ns-' . $title->getNamespace();
 695                 if( $title->getNamespace() == NS_SPECIAL ) {
 696                         $type = 'ns-special';
 697                 } elseif( $title->isTalkPage() ) {
 698                         $type = 'ns-talk';
 699                 } else {
 700                         $type = 'ns-subject';
 701                 }
 702                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 703                 return "$numeric $type $name";
 704         }
 705
 706         /**
 707          * URL to the logo
 708          */
 709         function getLogo() {
 710                 global $wgLogo;
 711                 return $wgLogo;
 712         }
 713
 714         /**
 715          * This will be called immediately after the <body> tag.  Split into
 716          * two functions to make it easier to subclass.
 717          */
 718         function beforeContent() {
 719                 return $this->doBeforeContent();
 720         }
 721
 722         function doBeforeContent() {
 723                 global $wgContLang;
 724                 wfProfileIn( __METHOD__ );
 725
 726                 $s = '';
 727                 $qb = $this->qbSetting();
 728
 729                 $langlinks = $this->otherLanguages();
 730                 if( $langlinks ) {
 731                         $rows = 2;
 732                         $borderhack = '';
 733                 } else {
 734                         $rows = 1;
 735                         $langlinks = false;
 736                         $borderhack = 'class="top"';
 737                 }
 738
 739                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 740                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 741
 742                 $shove = ( $qb != 0 );
 743                 $left = ( $qb == 1 || $qb == 3 );
 744                 if( $wgContLang->isRTL() ) {
 745                         $left = !$left;
 746                 }
 747
 748                 if( !$shove ) {
 749                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 750                                 $this->logoText() . '</td>';
 751                 } elseif( $left ) {
 752                         $s .= $this->getQuickbarCompensator( $rows );
 753                 }
 754                 $l = $wgContLang->alignStart();
 755                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 756
 757                 $s .= $this->topLinks();
 758                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 759
 760                 $r = $wgContLang->alignEnd();
 761                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 762                 $s .= $this->nameAndLogin();
 763                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 764
 765                 if ( $langlinks ) {
 766                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 767                 }
 768
 769                 if ( $shove && !$left ) { # Right
 770                         $s .= $this->getQuickbarCompensator( $rows );
 771                 }
 772                 $s .= "</tr>\n</table>\n</div>\n";
 773                 $s .= "\n<div id='article'>\n";
 774
 775                 $notice = wfGetSiteNotice();
 776                 if( $notice ) {
 777                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 778                 }
 779                 $s .= $this->pageTitle();
 780                 $s .= $this->pageSubtitle();
 781                 $s .= $this->getCategories();
 782                 wfProfileOut( __METHOD__ );
 783                 return $s;
 784         }
 785
 786         function getCategoryLinks() {
 787                 global $wgOut, $wgUseCategoryBrowser;
 788                 global $wgContLang, $wgUser;
 789
 790                 if( count( $wgOut->mCategoryLinks ) == 0 ) {
 791                         return '';
 792                 }
 793
 794                 # Separator
 795                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 796
 797                 // Use Unicode bidi embedding override characters,
 798                 // to make sure links don't smash each other up in ugly ways.
 799                 $dir = $wgContLang->getDir();
 800                 $embed = "<span dir='$dir'>";
 801                 $pop = '</span>';
 802
 803                 $allCats = $wgOut->getCategoryLinks();
 804                 $s = '';
 805                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 806                 if ( !empty( $allCats['normal'] ) ) {
 807                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 808
 809                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 810                         $s .= '<div id="mw-normal-catlinks">' .
 811                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 812                                 . $colon . $t . '</div>';
 813                 }
 814
 815                 # Hidden categories
 816                 if ( isset( $allCats['hidden'] ) ) {
 817                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 818                                 $class ='mw-hidden-cats-user-shown';
 819                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 820                                 $class = 'mw-hidden-cats-ns-shown';
 821                         } else {
 822                                 $class = 'mw-hidden-cats-hidden';
 823                         }
 824                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 825                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 826                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 827                                 '</div>';
 828                 }
 829
 830                 # optional 'dmoz-like' category browser. Will be shown under the list
 831                 # of categories an article belong to
 832                 if( $wgUseCategoryBrowser ) {
 833                         $s .= '<br /><hr />';
 834
 835                         # get a big array of the parents tree
 836                         $parenttree = $this->mTitle->getParentCategoryTree();
 837                         # Skin object passed by reference cause it can not be
 838                         # accessed under the method subfunction drawCategoryBrowser
 839                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 840                         # Clean out bogus first entry and sort them
 841                         unset( $tempout[0] );
 842                         asort( $tempout );
 843                         # Output one per line
 844                         $s .= implode( "<br />\n", $tempout );
 845                 }
 846
 847                 return $s;
 848         }
 849
 850         /**
 851          * Render the array as a serie of links.
 852          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 853          * @param &skin Object: skin passed by reference
 854          * @return String separated by &gt;, terminate with "\n"
 855          */
 856         function drawCategoryBrowser( $tree, &$skin ) {
 857                 $return = '';
 858                 foreach( $tree as $element => $parent ) {
 859                         if( empty( $parent ) ) {
 860                                 # element start a new list
 861                                 $return .= "\n";
 862                         } else {
 863                                 # grab the others elements
 864                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 865                         }
 866                         # add our current element to the list
 867                         $eltitle = Title::newFromText( $element );
 868                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 869                 }
 870                 return $return;
 871         }
 872
 873         function getCategories() {
 874                 $catlinks = $this->getCategoryLinks();
 875
 876                 $classes = 'catlinks';
 877
 878                 // Check what we're showing
 879                 global $wgOut, $wgUser;
 880                 $allCats = $wgOut->getCategoryLinks();
 881                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 882                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 883
 884                 if( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 885                         $classes .= ' catlinks-allhidden';
 886                 }
 887
 888                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 889         }
 890
 891         function getQuickbarCompensator( $rows = 1 ) {
 892                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 893         }
 894
 895         /**
 896          * This runs a hook to allow extensions placing their stuff after content
 897          * and article metadata (e.g. categories).
 898          * Note: This function has nothing to do with afterContent().
 899          *
 900          * This hook is placed here in order to allow using the same hook for all
 901          * skins, both the SkinTemplate based ones and the older ones, which directly
 902          * use this class to get their data.
 903          *
 904          * The output of this function gets processed in SkinTemplate::outputPage() for
 905          * the SkinTemplate based skins, all other skins should directly echo it.
 906          *
 907          * Returns an empty string by default, if not changed by any hook function.
 908          */
 909         protected function afterContentHook() {
 910                 $data = '';
 911
 912                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ) {
 913                         // adding just some spaces shouldn't toggle the output
 914                         // of the whole <div/>, so we use trim() here
 915                         if( trim( $data ) != '' ) {
 916                                 // Doing this here instead of in the skins to
 917                                 // ensure that the div has the same ID in all
 918                                 // skins
 919                                 $data = "<div id='mw-data-after-content'>\n" .
 920                                         "\t$data\n" .
 921                                         "</div>\n";
 922                         }
 923                 } else {
 924                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 925                 }
 926
 927                 return $data;
 928         }
 929
 930         /**
 931          * Generate debug data HTML for displaying at the bottom of the main content
 932          * area.
 933          * @return String HTML containing debug data, if enabled (otherwise empty).
 934          */
 935         protected function generateDebugHTML() {
 936                 global $wgShowDebug, $wgOut;
 937                 if ( $wgShowDebug ) {
 938                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 939                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 940                                 $listInternals . "</ul>\n";
 941                 }
 942                 return '';
 943         }
 944
 945         private function formatDebugHTML( $debugText ) {
 946                 $lines = explode( "\n", $debugText );
 947                 $curIdent = 0;
 948                 $ret = '<li>';
 949                 foreach( $lines as $line ) {
 950                         $m = array();
 951                         $display = ltrim( $line );
 952                         $ident = strlen( $line ) - strlen( $display );
 953                         $diff = $ident - $curIdent;
 954
 955                         if ( $display == '' ) {
 956                                 $display = "\xc2\xa0";
 957                         }
 958
 959                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 960                                 $ident = $curIdent;
 961                                 $diff = 0;
 962                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 963                         } else {
 964                                 $display = htmlspecialchars( $display );
 965                         }
 966
 967                         if ( $diff < 0 ) {
 968                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 969                         } elseif ( $diff == 0 ) {
 970                                 $ret .= "</li><li>\n";
 971                         } else {
 972                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 973                         }
 974                         $ret .= $display . "\n";
 975
 976                         $curIdent = $ident;
 977                 }
 978                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 979                 return $ret;
 980         }
 981
 982         /**
 983          * This gets called shortly before the </body> tag.
 984          * @return String HTML to be put before </body>
 985          */
 986         function afterContent() {
 987                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 988                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 989         }
 990
 991         /**
 992          * This gets called shortly before the </body> tag.
 993          * @return String HTML-wrapped JS code to be put before </body>
 994          */
 995         function bottomScripts() {
 996                 $bottomScriptText = "\n" . Html::inlineScript( 'if (window.runOnloadHook) runOnloadHook();' ) . "\n";
 997                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 998                 return $bottomScriptText;
 999         }
1000
1001         /** @return string Retrievied from HTML text */
1002         function printSource() {
1003                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
1004                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
1005         }
1006
1007         function printFooter() {
1008                 return "<p>" .  $this->printSource() .
1009                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1010         }
1011
1012         /** overloaded by derived classes */
1013         function doAfterContent() {
1014                 return '</div></div>';
1015         }
1016
1017         function pageTitleLinks() {
1018                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1019
1020                 $oldid = $wgRequest->getVal( 'oldid' );
1021                 $diff = $wgRequest->getVal( 'diff' );
1022                 $action = $wgRequest->getText( 'action' );
1023
1024                 $s[] = $this->printableLink();
1025                 $disclaimer = $this->disclaimerLink(); # may be empty
1026                 if( $disclaimer ) {
1027                         $s[] = $disclaimer;
1028                 }
1029                 $privacy = $this->privacyLink(); # may be empty too
1030                 if( $privacy ) {
1031                         $s[] = $privacy;
1032                 }
1033
1034                 if ( $wgOut->isArticleRelated() ) {
1035                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1036                                 $name = $this->mTitle->getDBkey();
1037                                 $image = wfFindFile( $this->mTitle );
1038                                 if( $image ) {
1039                                         $link = htmlspecialchars( $image->getURL() );
1040                                         $style = $this->getInternalLinkAttributes( $link, $name );
1041                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1042                                 }
1043                         }
1044                 }
1045                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1046                         $s[] .= $this->link(
1047                                         $this->mTitle,
1048                                         wfMsg( 'currentrev' ),
1049                                         array(),
1050                                         array(),
1051                                         array( 'known', 'noclasses' )
1052                         );
1053                 }
1054
1055                 if ( $wgUser->getNewtalk() ) {
1056                         # do not show "You have new messages" text when we are viewing our
1057                         # own talk page
1058                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1059                                 $tl = $this->link(
1060                                         $wgUser->getTalkPage(),
1061                                         wfMsgHtml( 'newmessageslink' ),
1062                                         array(),
1063                                         array( 'redirect' => 'no' ),
1064                                         array( 'known', 'noclasses' )
1065                                 );
1066
1067                                 $dl = $this->link(
1068                                         $wgUser->getTalkPage(),
1069                                         wfMsgHtml( 'newmessagesdifflink' ),
1070                                         array(),
1071                                         array( 'diff' => 'cur' ),
1072                                         array( 'known', 'noclasses' )
1073                                 );
1074                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1075                                 # disable caching
1076                                 $wgOut->setSquidMaxage( 0 );
1077                                 $wgOut->enableClientCache( false );
1078                         }
1079                 }
1080
1081                 $undelete = $this->getUndeleteLink();
1082                 if( !empty( $undelete ) ) {
1083                         $s[] = $undelete;
1084                 }
1085                 return $wgLang->pipeList( $s );
1086         }
1087
1088         function getUndeleteLink() {
1089                 global $wgUser, $wgContLang, $wgLang, $wgRequest;
1090
1091                 $action = $wgRequest->getVal( 'action', 'view' );
1092
1093                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1094                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1095                         $n = $this->mTitle->isDeleted();
1096                         if ( $n ) {
1097                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1098                                         $msg = 'thisisdeleted';
1099                                 } else {
1100                                         $msg = 'viewdeleted';
1101                                 }
1102                                 return wfMsg(
1103                                         $msg,
1104                                         $this->link(
1105                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1106                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1107                                                 array(),
1108                                                 array(),
1109                                                 array( 'known', 'noclasses' )
1110                                         )
1111                                 );
1112                         }
1113                 }
1114                 return '';
1115         }
1116
1117         function printableLink() {
1118                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1119
1120                 $s = array();
1121
1122                 if ( !$wgOut->isPrintable() ) {
1123                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1124                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1125                 }
1126
1127                 if( $wgOut->isSyndicated() ) {
1128                         foreach( $wgFeedClasses as $format => $class ) {
1129                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1130                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1131                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1132                         }
1133                 }
1134                 return $wgLang->pipeList( $s );
1135         }
1136
1137         /**
1138          * Gets the h1 element with the page title.
1139          * @return string
1140          */
1141         function pageTitle() {
1142                 global $wgOut;
1143                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1144                 return $s;
1145         }
1146
1147         function pageSubtitle() {
1148                 global $wgOut;
1149
1150                 $sub = $wgOut->getSubtitle();
1151                 if ( $sub == '' ) {
1152                         global $wgExtraSubtitle;
1153                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1154                 }
1155                 $subpages = $this->subPageSubtitle();
1156                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1157                 $s = "<p class='subtitle'>{$sub}</p>\n";
1158                 return $s;
1159         }
1160
1161         function subPageSubtitle() {
1162                 $subpages = '';
1163                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1164                         return $subpages;
1165                 }
1166
1167                 global $wgOut;
1168                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1169                         $ptext = $this->mTitle->getPrefixedText();
1170                         if( preg_match( '/\//', $ptext ) ) {
1171                                 $links = explode( '/', $ptext );
1172                                 array_pop( $links );
1173                                 $c = 0;
1174                                 $growinglink = '';
1175                                 $display = '';
1176                                 foreach( $links as $link ) {
1177                                         $growinglink .= $link;
1178                                         $display .= $link;
1179                                         $linkObj = Title::newFromText( $growinglink );
1180                                         if( is_object( $linkObj ) && $linkObj->exists() ) {
1181                                                 $getlink = $this->link(
1182                                                         $linkObj,
1183                                                         htmlspecialchars( $display ),
1184                                                         array(),
1185                                                         array(),
1186                                                         array( 'known', 'noclasses' )
1187                                                 );
1188                                                 $c++;
1189                                                 if( $c > 1 ) {
1190                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1191                                                 } else  {
1192                                                         $subpages .= '&lt; ';
1193                                                 }
1194                                                 $subpages .= $getlink;
1195                                                 $display = '';
1196                                         } else {
1197                                                 $display .= '/';
1198                                         }
1199                                         $growinglink .= '/';
1200                                 }
1201                         }
1202                 }
1203                 return $subpages;
1204         }
1205
1206         /**
1207          * Returns true if the IP should be shown in the header
1208          */
1209         function showIPinHeader() {
1210                 global $wgShowIPinHeader;
1211                 return $wgShowIPinHeader && session_id() != '';
1212         }
1213
1214         function nameAndLogin() {
1215                 global $wgUser, $wgLang, $wgContLang;
1216
1217                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1218
1219                 $ret = '';
1220                 if ( $wgUser->isAnon() ) {
1221                         if( $this->showIPinHeader() ) {
1222                                 $name = wfGetIP();
1223
1224                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1225                                         $wgLang->getNsText( NS_TALK ) );
1226
1227                                 $ret .= "$name ($talkLink)";
1228                         } else {
1229                                 $ret .= wfMsg( 'notloggedin' );
1230                         }
1231
1232                         $returnTo = $this->mTitle->getPrefixedDBkey();
1233                         $query = array();
1234                         if ( $logoutPage != $returnTo ) {
1235                                 $query['returnto'] = $returnTo;
1236                         }
1237
1238                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1239                                 ? 'nav-login-createaccount'
1240                                 : 'login';
1241                         $ret .= "\n<br />" . $this->link(
1242                                 SpecialPage::getTitleFor( 'Userlogin' ),
1243                                 wfMsg( $loginlink ), array(), $query
1244                         );
1245                 } else {
1246                         $returnTo = $this->mTitle->getPrefixedDBkey();
1247                         $talkLink = $this->link( $wgUser->getTalkPage(),
1248                                 $wgLang->getNsText( NS_TALK ) );
1249
1250                         $ret .= $this->link( $wgUser->getUserPage(),
1251                                 htmlspecialchars( $wgUser->getName() ) );
1252                         $ret .= " ($talkLink)<br />";
1253                         $ret .= $wgLang->pipeList( array(
1254                                 $this->link(
1255                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1256                                         array(), array( 'returnto' => $returnTo )
1257                                 ),
1258                                 $this->specialLink( 'preferences' ),
1259                         ) );
1260                 }
1261                 $ret = $wgLang->pipeList( array(
1262                         $ret,
1263                         $this->link(
1264                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1265                                 wfMsg( 'help' )
1266                         ),
1267                 ) );
1268
1269                 return $ret;
1270         }
1271
1272         function getSearchLink() {
1273                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1274                 return $searchPage->getLocalURL();
1275         }
1276
1277         function escapeSearchLink() {
1278                 return htmlspecialchars( $this->getSearchLink() );
1279         }
1280
1281         function searchForm() {
1282                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1283                 $search = $wgRequest->getText( 'search' );
1284
1285                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1286                   . $this->escapeSearchLink() . "\">\n"
1287                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1288                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1289                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1290
1291                 if( $wgUseTwoButtonsSearchForm ) {
1292                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1293                 } else {
1294                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1295                 }
1296
1297                 $s .= '</form>';
1298
1299                 // Ensure unique id's for search boxes made after the first
1300                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1301
1302                 return $s;
1303         }
1304
1305         function topLinks() {
1306                 global $wgOut;
1307
1308                 $s = array(
1309                         $this->mainPageLink(),
1310                         $this->specialLink( 'recentchanges' )
1311                 );
1312
1313                 if ( $wgOut->isArticleRelated() ) {
1314                         $s[] = $this->editThisPage();
1315                         $s[] = $this->historyLink();
1316                 }
1317                 # Many people don't like this dropdown box
1318                 #$s[] = $this->specialPagesList();
1319
1320                 if( $this->variantLinks() ) {
1321                         $s[] = $this->variantLinks();
1322                 }
1323
1324                 if( $this->extensionTabLinks() ) {
1325                         $s[] = $this->extensionTabLinks();
1326                 }
1327
1328                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1329                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1330         }
1331
1332         /**
1333          * Compatibility for extensions adding functionality through tabs.
1334          * Eventually these old skins should be replaced with SkinTemplate-based
1335          * versions, sigh...
1336          * @return string
1337          */
1338         function extensionTabLinks() {
1339                 $tabs = array();
1340                 $out = '';
1341                 $s = array();
1342                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1343                 foreach( $tabs as $tab ) {
1344                         $s[] = Xml::element( 'a',
1345                                 array( 'href' => $tab['href'] ),
1346                                 $tab['text'] );
1347                 }
1348
1349                 if( count( $s ) ) {
1350                         global $wgLang;
1351
1352                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1353                         $out .= $wgLang->pipeList( $s );
1354                 }
1355
1356                 return $out;
1357         }
1358
1359         /**
1360          * Language/charset variant links for classic-style skins
1361          * @return string
1362          */
1363         function variantLinks() {
1364                 $s = '';
1365                 /* show links to different language variants */
1366                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1367                 $variants = $wgContLang->getVariants();
1368                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1369                         foreach( $variants as $code ) {
1370                                 $varname = $wgContLang->getVariantname( $code );
1371                                 if( $varname == 'disable' ) {
1372                                         continue;
1373                                 }
1374                                 $s = $wgLang->pipeList( array(
1375                                         $s,
1376                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1377                                 ) );
1378                         }
1379                 }
1380                 return $s;
1381         }
1382
1383         function bottomLinks() {
1384                 global $wgOut, $wgUser, $wgUseTrackbacks;
1385                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1386
1387                 $s = '';
1388                 if ( $wgOut->isArticleRelated() ) {
1389                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1390                         if ( $wgUser->isLoggedIn() ) {
1391                                 $element[] = $this->watchThisPage();
1392                         }
1393                         $element[] = $this->talkLink();
1394                         $element[] = $this->historyLink();
1395                         $element[] = $this->whatLinksHere();
1396                         $element[] = $this->watchPageLinksLink();
1397
1398                         if( $wgUseTrackbacks ) {
1399                                 $element[] = $this->trackbackLink();
1400                         }
1401
1402                         if (
1403                                 $this->mTitle->getNamespace() == NS_USER ||
1404                                 $this->mTitle->getNamespace() == NS_USER_TALK
1405                         )
1406                         {
1407                                 $id = User::idFromName( $this->mTitle->getText() );
1408                                 $ip = User::isIP( $this->mTitle->getText() );
1409
1410                                 # Both anons and non-anons have contributions list
1411                                 if( $id || $ip ) {
1412                                         $element[] = $this->userContribsLink();
1413                                 }
1414                                 if( $this->showEmailUser( $id ) ) {
1415                                         $element[] = $this->emailUserLink();
1416                                 }
1417                         }
1418
1419                         $s = implode( $element, $sep );
1420
1421                         if ( $this->mTitle->getArticleId() ) {
1422                                 $s .= "\n<br />";
1423                                 // Delete/protect/move links for privileged users
1424                                 if( $wgUser->isAllowed( 'delete' ) ) {
1425                                         $s .= $this->deleteThisPage();
1426                                 }
1427                                 if( $wgUser->isAllowed( 'protect' ) ) {
1428                                         $s .= $sep . $this->protectThisPage();
1429                                 }
1430                                 if( $wgUser->isAllowed( 'move' ) ) {
1431                                         $s .= $sep . $this->moveThisPage();
1432                                 }
1433                         }
1434                         $s .= "<br />\n" . $this->otherLanguages();
1435                 }
1436
1437                 return $s;
1438         }
1439
1440         function pageStats() {
1441                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1442                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1443
1444                 $oldid = $wgRequest->getVal( 'oldid' );
1445                 $diff = $wgRequest->getVal( 'diff' );
1446                 if ( !$wgOut->isArticle() ) {
1447                         return '';
1448                 }
1449                 if( !$wgArticle instanceof Article ) {
1450                         return '';
1451                 }
1452                 if ( isset( $oldid ) || isset( $diff ) ) {
1453                         return '';
1454                 }
1455                 if ( 0 == $wgArticle->getID() ) {
1456                         return '';
1457                 }
1458
1459                 $s = '';
1460                 if ( !$wgDisableCounters ) {
1461                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1462                         if ( $count ) {
1463                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1464                         }
1465                 }
1466
1467                 if( $wgMaxCredits != 0 ) {
1468                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1469                 } else {
1470                         $s .= $this->lastModified();
1471                 }
1472
1473                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1474                         $dbr = wfGetDB( DB_SLAVE );
1475                         $res = $dbr->select(
1476                                 'watchlist',
1477                                 array( 'COUNT(*) AS n' ),
1478                                 array(
1479                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1480                                         'wl_namespace' => $this->mTitle->getNamespace()
1481                                 ),
1482                                 __METHOD__
1483                         );
1484                         $x = $dbr->fetchObject( $res );
1485
1486                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1487                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1488                         );
1489                 }
1490
1491                 return $s . ' ' .  $this->getCopyright();
1492         }
1493
1494         function getCopyright( $type = 'detect' ) {
1495                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1496
1497                 if ( $type == 'detect' ) {
1498                         $diff = $wgRequest->getVal( 'diff' );
1499                         $isCur = $wgArticle && $wgArticle->isCurrent();
1500                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1501                                 $type = 'history';
1502                         } else {
1503                                 $type = 'normal';
1504                         }
1505                 }
1506
1507                 if ( $type == 'history' ) {
1508                         $msg = 'history_copyright';
1509                 } else {
1510                         $msg = 'copyright';
1511                 }
1512
1513                 $out = '';
1514                 if( $wgRightsPage ) {
1515                         $title = Title::newFromText( $wgRightsPage );
1516                         $link = $this->linkKnown( $title, $wgRightsText );
1517                 } elseif( $wgRightsUrl ) {
1518                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1519                 } elseif( $wgRightsText ) {
1520                         $link = $wgRightsText;
1521                 } else {
1522                         # Give up now
1523                         return $out;
1524                 }
1525                 // Allow for site and per-namespace customization of copyright notice.
1526                 if( isset( $wgArticle ) ) {
1527                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link ) );
1528                 }
1529
1530                 $out .= wfMsgForContent( $msg, $link );
1531                 return $out;
1532         }
1533
1534         function getCopyrightIcon() {
1535                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1536                 $out = '';
1537                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1538                         $out = $wgCopyrightIcon;
1539                 } elseif ( $wgRightsIcon ) {
1540                         $icon = htmlspecialchars( $wgRightsIcon );
1541                         if ( $wgRightsUrl ) {
1542                                 $url = htmlspecialchars( $wgRightsUrl );
1543                                 $out .= '<a href="'.$url.'">';
1544                         }
1545                         $text = htmlspecialchars( $wgRightsText );
1546                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1547                         if ( $wgRightsUrl ) {
1548                                 $out .= '</a>';
1549                         }
1550                 }
1551                 return $out;
1552         }
1553
1554         /**
1555          * Gets the powered by MediaWiki icon.
1556          * @return string
1557          */
1558         function getPoweredBy() {
1559                 global $wgStylePath;
1560                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1561                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1562                 return $img;
1563         }
1564
1565         function lastModified() {
1566                 global $wgLang, $wgArticle;
1567                 if( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1568                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1569                 } else {
1570                         $timestamp = $wgArticle->getTimestamp();
1571                 }
1572                 if ( $timestamp ) {
1573                         $d = $wgLang->date( $timestamp, true );
1574                         $t = $wgLang->time( $timestamp, true );
1575                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1576                 } else {
1577                         $s = '';
1578                 }
1579                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1580                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1581                 }
1582                 return $s;
1583         }
1584
1585         function logoText( $align = '' ) {
1586                 if ( $align != '' ) {
1587                         $a = " align='{$align}'";
1588                 } else {
1589                         $a = '';
1590                 }
1591
1592                 $mp = wfMsg( 'mainpage' );
1593                 $mptitle = Title::newMainPage();
1594                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1595
1596                 $logourl = $this->getLogo();
1597                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1598                 return $s;
1599         }
1600
1601         /**
1602          * Show a drop-down box of special pages
1603          */
1604         function specialPagesList() {
1605                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1606                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1607                 foreach ( $pages as $name => $page ) {
1608                         $pages[$name] = $page->getDescription();
1609                 }
1610
1611                 $go = wfMsg( 'go' );
1612                 $sp = wfMsg( 'specialpages' );
1613                 $spp = $wgContLang->specialPage( 'Specialpages' );
1614
1615                 $s = '<form id="specialpages" method="get" ' .
1616                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1617                 $s .= "<select name=\"wpDropdown\">\n";
1618                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1619
1620
1621                 foreach ( $pages as $name => $desc ) {
1622                         $p = $wgContLang->specialPage( $name );
1623                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1624                 }
1625                 $s .= "</select>\n";
1626                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1627                 $s .= "</form>\n";
1628                 return $s;
1629         }
1630
1631         /**
1632          * Gets the link to the wiki's main page.
1633          * @return string
1634          */
1635         function mainPageLink() {
1636                 $s = $this->link(
1637                         Title::newMainPage(),
1638                         wfMsg( 'mainpage' ),
1639                         array(),
1640                         array(),
1641                         array( 'known', 'noclasses' )
1642                 );
1643                 return $s;
1644         }
1645
1646         private function footerLink( $desc, $page ) {
1647                 // if the link description has been set to "-" in the default language,
1648                 if ( wfMsgForContent( $desc )  == '-') {
1649                         // then it is disabled, for all languages.
1650                         return '';
1651                 } else {
1652                         // Otherwise, we display the link for the user, described in their
1653                         // language (which may or may not be the same as the default language),
1654                         // but we make the link target be the one site-wide page.
1655                         $title = Title::newFromText( wfMsgForContent( $page ) );
1656                         return $this->linkKnown(
1657                                 $title,
1658                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1659                         );
1660                 }
1661         }
1662
1663         /**
1664          * Gets the link to the wiki's privacy policy page.
1665          */
1666         function privacyLink() {
1667                 return $this->footerLink( 'privacy', 'privacypage' );
1668         }
1669
1670         /**
1671          * Gets the link to the wiki's about page.
1672          */
1673         function aboutLink() {
1674                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1675         }
1676
1677         /**
1678          * Gets the link to the wiki's general disclaimers page.
1679          */
1680         function disclaimerLink() {
1681                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1682         }
1683
1684         function editThisPage() {
1685                 global $wgOut;
1686
1687                 if ( !$wgOut->isArticleRelated() ) {
1688                         $s = wfMsg( 'protectedpage' );
1689                 } else {
1690                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1691                                 $t = wfMsg( 'editthispage' );
1692                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1693                                 $t = wfMsg( 'create-this-page' );
1694                         } else {
1695                                 $t = wfMsg( 'viewsource' );
1696                         }
1697
1698                         $s = $this->link(
1699                                 $this->mTitle,
1700                                 $t,
1701                                 array(),
1702                                 $this->editUrlOptions(),
1703                                 array( 'known', 'noclasses' )
1704                         );
1705                 }
1706                 return $s;
1707         }
1708
1709         /**
1710          * Return URL options for the 'edit page' link.
1711          * This may include an 'oldid' specifier, if the current page view is such.
1712          *
1713          * @return array
1714          * @private
1715          */
1716         function editUrlOptions() {
1717                 global $wgArticle;
1718
1719                 $options = array( 'action' => 'edit' );
1720
1721                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1722                         $options['oldid'] = intval( $this->mRevisionId );
1723                 }
1724
1725                 return $options;
1726         }
1727
1728         function deleteThisPage() {
1729                 global $wgUser, $wgRequest;
1730
1731                 $diff = $wgRequest->getVal( 'diff' );
1732                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1733                         $t = wfMsg( 'deletethispage' );
1734
1735                         $s = $this->link(
1736                                 $this->mTitle,
1737                                 $t,
1738                                 array(),
1739                                 array( 'action' => 'delete' ),
1740                                 array( 'known', 'noclasses' )
1741                         );
1742                 } else {
1743                         $s = '';
1744                 }
1745                 return $s;
1746         }
1747
1748         function protectThisPage() {
1749                 global $wgUser, $wgRequest;
1750
1751                 $diff = $wgRequest->getVal( 'diff' );
1752                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1753                         if ( $this->mTitle->isProtected() ) {
1754                                 $text = wfMsg( 'unprotectthispage' );
1755                                 $query = array( 'action' => 'unprotect' );
1756                         } else {
1757                                 $text = wfMsg( 'protectthispage' );
1758                                 $query = array( 'action' => 'protect' );
1759                         }
1760
1761                         $s = $this->link(
1762                                 $this->mTitle,
1763                                 $text,
1764                                 array(),
1765                                 $query,
1766                                 array( 'known', 'noclasses' )
1767                         );
1768                 } else {
1769                         $s = '';
1770                 }
1771                 return $s;
1772         }
1773
1774         function watchThisPage() {
1775                 global $wgOut;
1776                 ++$this->mWatchLinkNum;
1777
1778                 if ( $wgOut->isArticleRelated() ) {
1779                         if ( $this->mTitle->userIsWatching() ) {
1780                                 $text = wfMsg( 'unwatchthispage' );
1781                                 $query = array( 'action' => 'unwatch' );
1782                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1783                         } else {
1784                                 $text = wfMsg( 'watchthispage' );
1785                                 $query = array( 'action' => 'watch' );
1786                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1787                         }
1788
1789                         $s = $this->link(
1790                                 $this->mTitle,
1791                                 $text,
1792                                 array( 'id' => $id ),
1793                                 $query,
1794                                 array( 'known', 'noclasses' )
1795                         );
1796                 } else {
1797                         $s = wfMsg( 'notanarticle' );
1798                 }
1799                 return $s;
1800         }
1801
1802         function moveThisPage() {
1803                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1804                         return $this->link(
1805                                 SpecialPage::getTitleFor( 'Movepage' ),
1806                                 wfMsg( 'movethispage' ),
1807                                 array(),
1808                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1809                                 array( 'known', 'noclasses' )
1810                         );
1811                 } else {
1812                         // no message if page is protected - would be redundant
1813                         return '';
1814                 }
1815         }
1816
1817         function historyLink() {
1818                 return $this->link(
1819                         $this->mTitle,
1820                         wfMsgHtml( 'history' ),
1821                         array( 'rel' => 'archives' ),
1822                         array( 'action' => 'history' )
1823                 );
1824         }
1825
1826         function whatLinksHere() {
1827                 return $this->link(
1828                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1829                         wfMsgHtml( 'whatlinkshere' ),
1830                         array(),
1831                         array(),
1832                         array( 'known', 'noclasses' )
1833                 );
1834         }
1835
1836         function userContribsLink() {
1837                 return $this->link(
1838                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1839                         wfMsgHtml( 'contributions' ),
1840                         array(),
1841                         array(),
1842                         array( 'known', 'noclasses' )
1843                 );
1844         }
1845
1846         function showEmailUser( $id ) {
1847                 global $wgUser;
1848                 $targetUser = User::newFromId( $id );
1849                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1850                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1851         }
1852
1853         function emailUserLink() {
1854                 return $this->link(
1855                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1856                         wfMsg( 'emailuser' ),
1857                         array(),
1858                         array(),
1859                         array( 'known', 'noclasses' )
1860                 );
1861         }
1862
1863         function watchPageLinksLink() {
1864                 global $wgOut;
1865                 if ( !$wgOut->isArticleRelated() ) {
1866                         return '(' . wfMsg( 'notanarticle' ) . ')';
1867                 } else {
1868                         return $this->link(
1869                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1870                                 wfMsg( 'recentchangeslinked-toolbox' ),
1871                                 array(),
1872                                 array(),
1873                                 array( 'known', 'noclasses' )
1874                         );
1875                 }
1876         }
1877
1878         function trackbackLink() {
1879                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1880                         . wfMsg( 'trackbacklink' ) . '</a>';
1881         }
1882
1883         function otherLanguages() {
1884                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1885
1886                 if ( $wgHideInterlanguageLinks ) {
1887                         return '';
1888                 }
1889
1890                 $a = $wgOut->getLanguageLinks();
1891                 if ( 0 == count( $a ) ) {
1892                         return '';
1893                 }
1894
1895                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1896                 $first = true;
1897                 if( $wgContLang->isRTL() ) {
1898                         $s .= '<span dir="LTR">';
1899                 }
1900                 foreach( $a as $l ) {
1901                         if ( !$first ) {
1902                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1903                         }
1904                         $first = false;
1905
1906                         $nt = Title::newFromText( $l );
1907                         $url = $nt->escapeFullURL();
1908                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1909                         $title = htmlspecialchars( $nt->getText() );
1910
1911                         if ( $text == '' ) {
1912                                 $text = $l;
1913                         }
1914                         $style = $this->getExternalLinkAttributes();
1915                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1916                 }
1917                 if( $wgContLang->isRTL() ) {
1918                         $s .= '</span>';
1919                 }
1920                 return $s;
1921         }
1922
1923         function talkLink() {
1924                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1925                         # No discussion links for special pages
1926                         return '';
1927                 }
1928
1929                 $linkOptions = array();
1930
1931                 if( $this->mTitle->isTalkPage() ) {
1932                         $link = $this->mTitle->getSubjectPage();
1933                         switch( $link->getNamespace() ) {
1934                                 case NS_MAIN:
1935                                         $text = wfMsg( 'articlepage' );
1936                                         break;
1937                                 case NS_USER:
1938                                         $text = wfMsg( 'userpage' );
1939                                         break;
1940                                 case NS_PROJECT:
1941                                         $text = wfMsg( 'projectpage' );
1942                                         break;
1943                                 case NS_FILE:
1944                                         $text = wfMsg( 'imagepage' );
1945                                         # Make link known if image exists, even if the desc. page doesn't.
1946                                         if( wfFindFile( $link ) )
1947                                                 $linkOptions[] = 'known';
1948                                         break;
1949                                 case NS_MEDIAWIKI:
1950                                         $text = wfMsg( 'mediawikipage' );
1951                                         break;
1952                                 case NS_TEMPLATE:
1953                                         $text = wfMsg( 'templatepage' );
1954                                         break;
1955                                 case NS_HELP:
1956                                         $text = wfMsg( 'viewhelppage' );
1957                                         break;
1958                                 case NS_CATEGORY:
1959                                         $text = wfMsg( 'categorypage' );
1960                                         break;
1961                                 default:
1962                                         $text = wfMsg( 'articlepage' );
1963                         }
1964                 } else {
1965                         $link = $this->mTitle->getTalkPage();
1966                         $text = wfMsg( 'talkpage' );
1967                 }
1968
1969                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1970
1971                 return $s;
1972         }
1973
1974         function commentLink() {
1975                 global $wgOut;
1976
1977                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1978                         return '';
1979                 }
1980
1981                 # __NEWSECTIONLINK___ changes behaviour here
1982                 # If it is present, the link points to this page, otherwise
1983                 # it points to the talk page
1984                 if( $this->mTitle->isTalkPage() ) {
1985                         $title = $this->mTitle;
1986                 } elseif( $wgOut->showNewSectionLink() ) {
1987                         $title = $this->mTitle;
1988                 } else {
1989                         $title = $this->mTitle->getTalkPage();
1990                 }
1991
1992                 return $this->link(
1993                         $title,
1994                         wfMsg( 'postcomment' ),
1995                         array(),
1996                         array(
1997                                 'action' => 'edit',
1998                                 'section' => 'new'
1999                         ),
2000                         array( 'known', 'noclasses' )
2001                 );
2002         }
2003
2004         function getUploadLink() {
2005                 global $wgUploadNavigationUrl;
2006
2007                 if( $wgUploadNavigationUrl ) {
2008                         # Using an empty class attribute to avoid automatic setting of "external" class
2009                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '') );
2010                 } else {
2011                         return $this->link(
2012                                 SpecialPage::getTitleFor('Upload'),
2013                                 wfMsgHtml( 'upload' ),
2014                                 array(),
2015                                 array(),
2016                                 array( 'known', 'noclasses' )
2017                         );
2018                 }
2019         }
2020
2021         /* these are used extensively in SkinTemplate, but also some other places */
2022         static function makeMainPageUrl( $urlaction = '' ) {
2023                 $title = Title::newMainPage();
2024                 self::checkTitle( $title, '' );
2025                 return $title->getLocalURL( $urlaction );
2026         }
2027
2028         static function makeSpecialUrl( $name, $urlaction = '' ) {
2029                 $title = SpecialPage::getTitleFor( $name );
2030                 return $title->getLocalURL( $urlaction );
2031         }
2032
2033         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2034                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2035                 return $title->getLocalURL( $urlaction );
2036         }
2037
2038         static function makeI18nUrl( $name, $urlaction = '' ) {
2039                 $title = Title::newFromText( wfMsgForContent( $name ) );
2040                 self::checkTitle( $title, $name );
2041                 return $title->getLocalURL( $urlaction );
2042         }
2043
2044         static function makeUrl( $name, $urlaction = '' ) {
2045                 $title = Title::newFromText( $name );
2046                 self::checkTitle( $title, $name );
2047                 return $title->getLocalURL( $urlaction );
2048         }
2049
2050         /**
2051          * If url string starts with http, consider as external URL, else
2052          * internal
2053          */
2054         static function makeInternalOrExternalUrl( $name ) {
2055                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2056                         return $name;
2057                 } else {
2058                         return self::makeUrl( $name );
2059                 }
2060         }
2061
2062         # this can be passed the NS number as defined in Language.php
2063         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2064                 $title = Title::makeTitleSafe( $namespace, $name );
2065                 self::checkTitle( $title, $name );
2066                 return $title->getLocalURL( $urlaction );
2067         }
2068
2069         /* these return an array with the 'href' and boolean 'exists' */
2070         static function makeUrlDetails( $name, $urlaction = '' ) {
2071                 $title = Title::newFromText( $name );
2072                 self::checkTitle( $title, $name );
2073                 return array(
2074                         'href' => $title->getLocalURL( $urlaction ),
2075                         'exists' => $title->getArticleID() != 0 ? true : false
2076                 );
2077         }
2078
2079         /**
2080          * Make URL details where the article exists (or at least it's convenient to think so)
2081          */
2082         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2083                 $title = Title::newFromText( $name );
2084                 self::checkTitle( $title, $name );
2085                 return array(
2086                         'href' => $title->getLocalURL( $urlaction ),
2087                         'exists' => true
2088                 );
2089         }
2090
2091         # make sure we have some title to operate on
2092         static function checkTitle( &$title, $name ) {
2093                 if( !is_object( $title ) ) {
2094                         $title = Title::newFromText( $name );
2095                         if( !is_object( $title ) ) {
2096                                 $title = Title::newFromText( '--error: link target missing--' );
2097                         }
2098                 }
2099         }
2100
2101         /**
2102          * Build an array that represents the sidebar(s), the navigation bar among them
2103          *
2104          * @return array
2105          */
2106         function buildSidebar() {
2107                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2108                 global $wgLang;
2109                 wfProfileIn( __METHOD__ );
2110
2111                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2112
2113                 if ( $wgEnableSidebarCache ) {
2114                         $cachedsidebar = $parserMemc->get( $key );
2115                         if ( $cachedsidebar ) {
2116                                 wfProfileOut( __METHOD__ );
2117                                 return $cachedsidebar;
2118                         }
2119                 }
2120
2121                 $bar = array();
2122                 $this->addToSidebar( $bar, 'sidebar' );
2123
2124                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2125                 if ( $wgEnableSidebarCache ) {
2126                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2127                 }
2128                 wfProfileOut( __METHOD__ );
2129                 return $bar;
2130         }
2131         /**
2132          * Add content from a sidebar system message
2133          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2134          *
2135          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2136          *
2137          * @param &$bar array
2138          * @param $message String
2139          */
2140         function addToSidebar( &$bar, $message ) {
2141                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2142         }
2143
2144         /**
2145          * Add content from plain text
2146          * @since 1.17
2147          * @param &$bar array
2148          * @param $text string
2149          */
2150         function addToSidebarPlain( &$bar, $text ) {
2151                 $lines = explode( "\n", $text );
2152                 $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.
2153
2154                 $heading = '';
2155                 foreach( $lines as $line ) {
2156                         if( strpos( $line, '*' ) !== 0 ) {
2157                                 continue;
2158                         }
2159                         if( strpos( $line, '**') !== 0 ) {
2160                                 $heading = trim( $line, '* ' );
2161                                 if( !array_key_exists( $heading, $bar ) ) {
2162                                         $bar[$heading] = array();
2163                                 }
2164                         } else {
2165                                 $line = trim( $line, '* ' );
2166                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2167                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2168                                         $link = wfMsgForContent( $line[0] );
2169                                         if( $link == '-' ) {
2170                                                 continue;
2171                                         }
2172
2173                                         $text = wfMsgExt( $line[1], 'parsemag' );
2174                                         if( wfEmptyMsg( $line[1], $text ) ) {
2175                                                 $text = $line[1];
2176                                         }
2177                                         if( wfEmptyMsg( $line[0], $link ) ) {
2178                                                 $link = $line[0];
2179                                         }
2180
2181                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2182                                                 $href = $link;
2183                                         } else {
2184                                                 $title = Title::newFromText( $link );
2185                                                 if ( $title ) {
2186                                                         $title = $title->fixSpecialName();
2187                                                         $href = $title->getLocalURL();
2188                                                 } else {
2189                                                         $href = 'INVALID-TITLE';
2190                                                 }
2191                                         }
2192
2193                                         $bar[$heading][] = array(
2194                                                 'text' => $text,
2195                                                 'href' => $href,
2196                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2197                                                 'active' => false
2198                                         );
2199                                 } else if ( (substr($line, 0, 2) == '{{') && (substr($line, -2) == '}}') ) {
2200                                         global $wgParser, $wgTitle;
2201
2202                                         $line = substr($line, 2, strlen($line) - 4 );
2203
2204                                         if (is_null($wgParser->mOptions))
2205                                                 $wgParser->mOptions = new ParserOptions();
2206
2207                                         $wgParser->mOptions->setEditSection(false);
2208                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2209                                 } else {
2210                                         continue;
2211                                 }
2212                         }
2213                 }
2214
2215                 if ( count($wikiBar) > 0 )
2216                         $bar = array_merge($bar, $wikiBar);
2217
2218                 return $bar;
2219         }
2220
2221         /**
2222          * Should we include common/wikiprintable.css?  Skins that have their own
2223          * print stylesheet should override this and return false.  (This is an
2224          * ugly hack to get Monobook to play nicely with
2225          * OutputPage::headElement().)
2226          *
2227          * @return bool
2228          */
2229         public function commonPrintStylesheet() {
2230                 return true;
2231         }
2232
2233         /**
2234          * Gets new talk page messages for the current user.
2235          * @return MediaWiki message or if no new talk page messages, nothing
2236          */
2237         function getNewtalks() {
2238                 global $wgUser, $wgOut;
2239                 $newtalks = $wgUser->getNewMessageLinks();
2240                 $ntl = '';
2241
2242                 if( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2243                         $userTitle = $this->mUser->getUserPage();
2244                         $userTalkTitle = $userTitle->getTalkPage();
2245
2246                         if( !$userTalkTitle->equals( $this->mTitle ) ) {
2247                                 $newMessagesLink = $this->link(
2248                                         $userTalkTitle,
2249                                         wfMsgHtml( 'newmessageslink' ),
2250                                         array(),
2251                                         array( 'redirect' => 'no' ),
2252                                         array( 'known', 'noclasses' )
2253                                 );
2254
2255                                 $newMessagesDiffLink = $this->link(
2256                                         $userTalkTitle,
2257                                         wfMsgHtml( 'newmessagesdifflink' ),
2258                                         array(),
2259                                         array( 'diff' => 'cur' ),
2260                                         array( 'known', 'noclasses' )
2261                                 );
2262
2263                                 $ntl = wfMsg(
2264                                         'youhavenewmessages',
2265                                         $newMessagesLink,
2266                                         $newMessagesDiffLink
2267                                 );
2268                                 # Disable Squid cache
2269                                 $wgOut->setSquidMaxage( 0 );
2270                         }
2271                 } elseif( count( $newtalks ) ) {
2272                         // _>" " for BC <= 1.16
2273                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2274                         $msgs = array();
2275                         foreach( $newtalks as $newtalk ) {
2276                                 $msgs[] = Xml::element(
2277                                         'a',
2278                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2279                                 );
2280                         }
2281                         $parts = implode( $sep, $msgs );
2282                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2283                         $wgOut->setSquidMaxage( 0 );
2284                 }
2285                 return $ntl;
2286         }
2287
2288 }