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 abstract class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         /**#@-*/
  24         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  25         protected $skinname = 'standard';
  26         /**
  27          * todo Fixme: should be protected :-\
  28          * @var Title
  29          */
  30         var $mTitle = null;
  31         protected $mRelevantTitle = null;
  32         protected $mRelevantUser = null;
  33
  34         /** Constructor, call parent constructor */
  35         function __construct() {
  36                 parent::__construct();
  37         }
  38
  39         /**
  40          * Fetch the set of available skins.
  41          * @return array of strings
  42          */
  43         static function getSkinNames() {
  44                 global $wgValidSkinNames;
  45                 static $skinsInitialised = false;
  46
  47                 if ( !$skinsInitialised || !count( $wgValidSkinNames ) ) {
  48                         # Get a list of available skins
  49                         # Build using the regular expression '^(.*).php$'
  50                         # Array keys are all lower case, array value keep the case used by filename
  51                         #
  52                         wfProfileIn( __METHOD__ . '-init' );
  53
  54                         global $wgStyleDirectory;
  55
  56                         $skinDir = dir( $wgStyleDirectory );
  57
  58                         # while code from www.php.net
  59                         while ( false !== ( $file = $skinDir->read() ) ) {
  60                                 // Skip non-PHP files, hidden files, and '.dep' includes
  61                                 $matches = array();
  62
  63                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  64                                         $aSkin = $matches[1];
  65                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  66                                 }
  67                         }
  68                         $skinDir->close();
  69                         $skinsInitialised = true;
  70                         wfProfileOut( __METHOD__ . '-init' );
  71                 }
  72                 return $wgValidSkinNames;
  73         }
  74
  75         /**
  76          * Fetch the list of usable skins in regards to $wgSkipSkins.
  77          * Useful for Special:Preferences and other places where you
  78          * only want to show skins users _can_ use.
  79          * @return array of strings
  80          */
  81         public static function getUsableSkins() {
  82                 global $wgSkipSkins;
  83
  84                 $usableSkins = self::getSkinNames();
  85
  86                 foreach ( $wgSkipSkins as $skip ) {
  87                         unset( $usableSkins[$skip] );
  88                 }
  89
  90                 return $usableSkins;
  91         }
  92
  93         /**
  94          * Normalize a skin preference value to a form that can be loaded.
  95          * If a skin can't be found, it will fall back to the configured
  96          * default (or the old 'Classic' skin if that's broken).
  97          * @param $key String: 'monobook', 'standard', etc.
  98          * @return string
  99          */
 100         static function normalizeKey( $key ) {
 101                 global $wgDefaultSkin;
 102
 103                 $skinNames = Skin::getSkinNames();
 104
 105                 if ( $key == '' ) {
 106                         // Don't return the default immediately;
 107                         // in a misconfiguration we need to fall back.
 108                         $key = $wgDefaultSkin;
 109                 }
 110
 111                 if ( isset( $skinNames[$key] ) ) {
 112                         return $key;
 113                 }
 114
 115                 // Older versions of the software used a numeric setting
 116                 // in the user preferences.
 117                 $fallback = array(
 118                         0 => $wgDefaultSkin,
 119                         1 => 'nostalgia',
 120                         2 => 'cologneblue'
 121                 );
 122
 123                 if ( isset( $fallback[$key] ) ) {
 124                         $key = $fallback[$key];
 125                 }
 126
 127                 if ( isset( $skinNames[$key] ) ) {
 128                         return $key;
 129                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 130                         return $wgDefaultSkin;
 131                 } else {
 132                         return 'vector';
 133                 }
 134         }
 135
 136         /**
 137          * Factory method for loading a skin of a given type
 138          * @param $key String: 'monobook', 'standard', etc.
 139          * @return Skin
 140          */
 141         static function &newFromKey( $key ) {
 142                 global $wgStyleDirectory;
 143
 144                 $key = Skin::normalizeKey( $key );
 145
 146                 $skinNames = Skin::getSkinNames();
 147                 $skinName = $skinNames[$key];
 148                 $className = "Skin{$skinName}";
 149
 150                 # Grab the skin class and initialise it.
 151                 if ( !class_exists( $className ) ) {
 152                         // Preload base classes to work around APC/PHP5 bug
 153                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 154
 155                         if ( file_exists( $deps ) ) {
 156                                 include_once( $deps );
 157                         }
 158                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 159
 160                         # Check if we got if not failback to default skin
 161                         if ( !class_exists( $className ) ) {
 162                                 # DO NOT die if the class isn't found. This breaks maintenance
 163                                 # scripts and can cause a user account to be unrecoverable
 164                                 # except by SQL manipulation if a previously valid skin name
 165                                 # is no longer valid.
 166                                 wfDebug( "Skin class does not exist: $className\n" );
 167                                 $className = 'SkinVector';
 168                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 169                         }
 170                 }
 171                 $skin = new $className;
 172                 return $skin;
 173         }
 174
 175         /** @return string path to the skin stylesheet */
 176         function getStylesheet() {
 177                 return 'common/wikistandard.css';
 178         }
 179
 180         /** @return string skin name */
 181         public function getSkinName() {
 182                 return $this->skinname;
 183         }
 184
 185         function initPage( OutputPage $out ) {
 186                 global $wgFavicon, $wgAppleTouchIcon, $wgEnableAPI;
 187
 188                 wfProfileIn( __METHOD__ );
 189
 190                 # Generally the order of the favicon and apple-touch-icon links
 191                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 192                 # uses whichever one appears later in the HTML source. Make sure
 193                 # apple-touch-icon is specified first to avoid this.
 194                 if ( false !== $wgAppleTouchIcon ) {
 195                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 196                 }
 197
 198                 if ( false !== $wgFavicon ) {
 199                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 200                 }
 201
 202                 # OpenSearch description link
 203                 $out->addLink( array(
 204                         'rel' => 'search',
 205                         'type' => 'application/opensearchdescription+xml',
 206                         'href' => wfScript( 'opensearch_desc' ),
 207                         'title' => wfMsgForContent( 'opensearch-desc' ),
 208                 ) );
 209
 210                 if ( $wgEnableAPI ) {
 211                         # Real Simple Discovery link, provides auto-discovery information
 212                         # for the MediaWiki API (and potentially additional custom API
 213                         # support such as WordPress or Twitter-compatible APIs for a
 214                         # blogging extension, etc)
 215                         $out->addLink( array(
 216                                 'rel' => 'EditURI',
 217                                 'type' => 'application/rsd+xml',
 218                                 'href' => wfExpandUrl( wfAppendQuery( wfScript( 'api' ), array( 'action' => 'rsd' ) ) ),
 219                         ) );
 220                 }
 221
 222                 $this->addMetadataLinks( $out );
 223
 224                 $this->mRevisionId = $out->mRevisionId;
 225
 226                 $this->preloadExistence();
 227
 228                 wfProfileOut( __METHOD__ );
 229         }
 230
 231         /**
 232          * Preload the existence of three commonly-requested pages in a single query
 233          */
 234         function preloadExistence() {
 235                 global $wgUser;
 236
 237                 // User/talk link
 238                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 239
 240                 // Other tab link
 241                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 242                         // nothing
 243                 } elseif ( $this->mTitle->isTalkPage() ) {
 244                         $titles[] = $this->mTitle->getSubjectPage();
 245                 } else {
 246                         $titles[] = $this->mTitle->getTalkPage();
 247                 }
 248
 249                 $lb = new LinkBatch( $titles );
 250                 $lb->setCaller( __METHOD__ );
 251                 $lb->execute();
 252         }
 253
 254         /**
 255          * Adds metadata links below to the HTML output.
 256          * <ol>
 257          *  <li>Creative Commons
 258          *   <br />See http://wiki.creativecommons.org/Extend_Metadata.
 259          *  </li>
 260          *  <li>Dublin Core</li>
 261          *  <li>Use hreflang to specify canonical and alternate links
 262          *   <br />See http://www.google.com/support/webmasters/bin/answer.py?answer=189077
 263          *  </li>
 264          *  <li>Copyright</li>
 265          * <ol>
 266          *
 267          * @param $out Object: instance of OutputPage
 268          */
 269         function addMetadataLinks( OutputPage $out ) {
 270                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 271                 global $wgDisableLangConversion, $wgCanonicalLanguageLinks, $wgContLang;
 272                 global $wgRightsPage, $wgRightsUrl;
 273
 274                 if ( $out->isArticleRelated() ) {
 275                         # note: buggy CC software only reads first "meta" link
 276                         if ( $wgEnableCreativeCommonsRdf ) {
 277                                 $out->addMetadataLink( array(
 278                                         'title' => 'Creative Commons',
 279                                         'type' => 'application/rdf+xml',
 280                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 281                                 );
 282                         }
 283
 284                         if ( $wgEnableDublinCoreRdf ) {
 285                                 $out->addMetadataLink( array(
 286                                         'title' => 'Dublin Core',
 287                                         'type' => 'application/rdf+xml',
 288                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 289                                 );
 290                         }
 291                 }
 292
 293                 if ( !$wgDisableLangConversion && $wgCanonicalLanguageLinks
 294                         && $wgContLang->hasVariants() ) {
 295
 296                         $urlvar = $wgContLang->getURLVariant();
 297
 298                         if ( !$urlvar ) {
 299                                 $variants = $wgContLang->getVariants();
 300                                 foreach ( $variants as $_v ) {
 301                                         $out->addLink( array(
 302                                                 'rel' => 'alternate',
 303                                                 'hreflang' => $_v,
 304                                                 'href' => $this->mTitle->getLocalURL( '', $_v ) )
 305                                         );
 306                                 }
 307                         } else {
 308                                 $out->addLink( array(
 309                                         'rel' => 'canonical',
 310                                         'href' => $this->mTitle->getFullURL() )
 311                                 );
 312                         }
 313                 }
 314
 315                 $copyright = '';
 316                 if ( $wgRightsPage ) {
 317                         $copy = Title::newFromText( $wgRightsPage );
 318
 319                         if ( $copy ) {
 320                                 $copyright = $copy->getLocalURL();
 321                         }
 322                 }
 323
 324                 if ( !$copyright && $wgRightsUrl ) {
 325                         $copyright = $wgRightsUrl;
 326                 }
 327
 328                 if ( $copyright ) {
 329                         $out->addLink( array(
 330                                 'rel' => 'copyright',
 331                                 'href' => $copyright )
 332                         );
 333                 }
 334         }
 335
 336         /**
 337          * Set some local variables
 338          */
 339         protected function setMembers() {
 340                 global $wgUser;
 341                 $this->mUser = $wgUser;
 342                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 343                 $this->usercss = false;
 344         }
 345
 346         /**
 347          * Whether the revision displayed is the latest revision of the page
 348          *
 349          * @return Boolean
 350          */
 351         public function isRevisionCurrent() {
 352                 return $this->mRevisionId == 0 || $this->mRevisionId == $this->mTitle->getLatestRevID();
 353         }
 354
 355         /**
 356          * Set the title
 357          * @param $t Title object to use
 358          */
 359         public function setTitle( $t ) {
 360                 $this->mTitle = $t;
 361         }
 362
 363         /** Get the title
 364          *
 365          * @return Title
 366          */
 367         public function getTitle() {
 368                 return $this->mTitle;
 369         }
 370
 371         /**
 372          * Set the "relevant" title
 373          * @see self::getRelevantTitle()
 374          * @param $t Title object to use
 375          */
 376         public function setRelevantTitle( $t ) {
 377                 $this->mRelevantTitle = $t;
 378         }
 379
 380         /**
 381          * Return the "relevant" title.
 382          * A "relevant" title is not necessarily the actual title of the page.
 383          * Special pages like Special:MovePage use set the page they are acting on
 384          * as their "relevant" title, this allows the skin system to display things
 385          * such as content tabs which belong to to that page instead of displaying
 386          * a basic special page tab which has almost no meaning.
 387          */
 388         public function getRelevantTitle() {
 389                 if ( isset($this->mRelevantTitle) ) {
 390                         return $this->mRelevantTitle;
 391                 }
 392                 return $this->mTitle;
 393         }
 394
 395         /**
 396          * Set the "relevant" user
 397          * @see self::getRelevantUser()
 398          * @param $u User object to use
 399          */
 400         public function setRelevantUser( $u ) {
 401                 $this->mRelevantUser = $u;
 402         }
 403
 404         /**
 405          * Return the "relevant" user.
 406          * A "relevant" user is similar to a relevant title. Special pages like
 407          * Special:Contributions mark the user which they are relevant to so that
 408          * things like the toolbox can display the information they usually are only
 409          * able to display on a user's userpage and talkpage.
 410          */
 411         public function getRelevantUser() {
 412                 if ( isset($this->mRelevantUser) ) {
 413                         return $this->mRelevantUser;
 414                 }
 415                 $title = $this->getRelevantTitle();
 416                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 417                         $rootUser = strtok( $title->getText(), '/' );
 418                         if ( User::isIP( $rootUser ) ) {
 419                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 420                         } else {
 421                                 $user = User::newFromName( $rootUser );
 422                                 if ( $user->isLoggedIn() ) {
 423                                         $this->mRelevantUser = $user;
 424                                 }
 425                         }
 426                         return $this->mRelevantUser;
 427                 }
 428                 return null;
 429         }
 430
 431         /**
 432          * Outputs the HTML generated by other functions.
 433          * @param $out Object: instance of OutputPage
 434          * @todo Exterminate!
 435          */
 436         function outputPage( OutputPage $out ) {
 437                 global $wgDebugComments;
 438                 wfProfileIn( __METHOD__ );
 439
 440                 $this->setMembers();
 441                 $this->initPage( $out );
 442
 443                 // See self::afterContentHook() for documentation
 444                 $afterContent = $this->afterContentHook();
 445
 446                 $out->out( $out->headElement( $this ) );
 447
 448                 if ( $wgDebugComments ) {
 449                         $out->out( "<!-- Debug output:\n" .
 450                           $out->mDebugtext . "-->\n" );
 451                 }
 452
 453                 $out->out( $this->beforeContent() );
 454
 455                 $out->out( $out->mBodytext . "\n" );
 456
 457                 $out->out( $this->afterContent() );
 458
 459                 $out->out( $afterContent );
 460
 461                 $out->out( $this->bottomScripts( $out ) );
 462
 463                 $out->out( wfReportTime() );
 464
 465                 $out->out( "\n</body></html>" );
 466                 wfProfileOut( __METHOD__ );
 467         }
 468
 469         static function makeVariablesScript( $data ) {
 470                 if ( $data ) {
 471                         return Html::inlineScript(
 472                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 473                         );
 474                 } else {
 475                         return '';
 476                 }
 477         }
 478
 479         /**
 480          * To make it harder for someone to slip a user a fake
 481          * user-JavaScript or user-CSS preview, a random token
 482          * is associated with the login session. If it's not
 483          * passed back with the preview request, we won't render
 484          * the code.
 485          *
 486          * @param $action String: 'edit', 'submit' etc.
 487          * @return bool
 488          */
 489         public function userCanPreview( $action ) {
 490                 global $wgRequest, $wgUser;
 491
 492                 if ( $action != 'submit' ) {
 493                         return false;
 494                 }
 495                 if ( !$wgRequest->wasPosted() ) {
 496                         return false;
 497                 }
 498                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 499                         return false;
 500                 }
 501                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 502                         return false;
 503                 }
 504
 505                 return $wgUser->matchEditToken(
 506                         $wgRequest->getVal( 'wpEditToken' ) );
 507         }
 508
 509         /**
 510          * Generated JavaScript action=raw&gen=js
 511          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 512          * nated together.  For some bizarre reason, it does *not* return any
 513          * custom user JS from subpages.  Huh?
 514          *
 515          * There's absolutely no reason to have separate Monobook/Common JSes.
 516          * Any JS that cares can just check the skin variable generated at the
 517          * top.  For now Monobook.js will be maintained, but it should be consi-
 518          * dered deprecated.
 519          *
 520          * @param $skinName String: If set, overrides the skin name
 521          * @return string
 522          */
 523         public function generateUserJs( $skinName = null ) {
 524
 525                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 526
 527                 return '';
 528         }
 529
 530         /**
 531          * Generate user stylesheet for action=raw&gen=css
 532          */
 533         public function generateUserStylesheet() {
 534
 535                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 536
 537                 return '';
 538         }
 539
 540         /**
 541          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 542          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 543          */
 544         protected function reallyGenerateUserStylesheet() {
 545
 546                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 547
 548                 return '';
 549         }
 550
 551         /**
 552          * @private
 553          */
 554         function setupUserCss( OutputPage $out ) {
 555                 global $wgRequest, $wgUser;
 556                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs;
 557
 558                 wfProfileIn( __METHOD__ );
 559
 560                 $this->setupSkinUserCss( $out );
 561                 // Add any extension CSS
 562                 foreach ( $out->getExtStyle() as $url ) {
 563                         $out->addStyle( $url );
 564                 }
 565
 566                 // Per-site custom styles
 567                 if ( $wgUseSiteCss ) {
 568                         $out->addModuleStyles( array( 'site', 'noscript' ) );
 569                         if( $wgUser->isLoggedIn() ){
 570                                 $out->addModuleStyles( 'user.groups' );
 571                         }
 572                 }
 573
 574                 // Per-user custom styles
 575                 if ( $wgAllowUserCss ) {
 576                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 577                                 // @FIXME: properly escape the cdata!
 578                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 579                         } else {
 580                                 $out->addModuleStyles( 'user' );
 581                         }
 582                 }
 583
 584                 // Per-user preference styles
 585                 if ( $wgAllowUserCssPrefs ) {
 586                         $out->addModuleStyles( 'user.options' );
 587                 }
 588
 589                 wfProfileOut( __METHOD__ );
 590         }
 591
 592         /**
 593          * Get the query to generate a dynamic stylesheet
 594          *
 595          * @return array
 596          */
 597         public static function getDynamicStylesheetQuery() {
 598                 global $wgSquidMaxage;
 599
 600                 return array(
 601                                 'action' => 'raw',
 602                                 'maxage' => $wgSquidMaxage,
 603                                 'usemsgcache' => 'yes',
 604                                 'ctype' => 'text/css',
 605                                 'smaxage' => $wgSquidMaxage,
 606                         );
 607         }
 608
 609         /**
 610          * Add skin specific stylesheets
 611          * @param $out OutputPage
 612          * @delete
 613          */
 614         abstract function setupSkinUserCss( OutputPage $out );
 615
 616         function getPageClasses( $title ) {
 617                 $numeric = 'ns-' . $title->getNamespace();
 618
 619                 if ( $title->getNamespace() == NS_SPECIAL ) {
 620                         $type = 'ns-special';
 621                         // bug 23315: provide a class based on the canonical special page name without subpages
 622                         list( $canonicalName ) = SpecialPage::resolveAliasWithSubpage( $title->getDBkey() );
 623                         if ( $canonicalName ) {
 624                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 625                         } else {
 626                                 $type .= ' mw-invalidspecialpage';
 627                         }
 628                 } elseif ( $title->isTalkPage() ) {
 629                         $type = 'ns-talk';
 630                 } else {
 631                         $type = 'ns-subject';
 632                 }
 633
 634                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 635
 636                 return "$numeric $type $name";
 637         }
 638
 639         /**
 640          * This will be called by OutputPage::headElement when it is creating the
 641          * <body> tag, skins can override it if they have a need to add in any
 642          * body attributes or classes of their own.
 643          */
 644         function addToBodyAttributes( $out, &$bodyAttrs ) {
 645                 // does nothing by default
 646         }
 647
 648         /**
 649          * URL to the logo
 650          */
 651         function getLogo() {
 652                 global $wgLogo;
 653                 return $wgLogo;
 654         }
 655
 656         /**
 657          * The format without an explicit $out argument is deprecated
 658          */
 659         function getCategoryLinks( OutputPage $out=null ) {
 660                 global $wgUseCategoryBrowser, $wgContLang, $wgUser;
 661
 662                 if ( is_null( $out ) ) {
 663                         // Backwards compatibility for when there was no $out arg
 664                         global $wgOut;
 665                         $out = $wgOut;
 666                 }
 667
 668                 if ( count( $out->mCategoryLinks ) == 0 ) {
 669                         return '';
 670                 }
 671
 672                 # Separator
 673                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 674
 675                 // Use Unicode bidi embedding override characters,
 676                 // to make sure links don't smash each other up in ugly ways.
 677                 $dir = $wgContLang->getDir();
 678                 $embed = "<span dir='$dir'>";
 679                 $pop = '</span>';
 680
 681                 $allCats = $out->getCategoryLinks();
 682                 $s = '';
 683                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 684
 685                 if ( !empty( $allCats['normal'] ) ) {
 686                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 687
 688                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 689                         $s .= '<div id="mw-normal-catlinks">' .
 690                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 691                                 . $colon . $t . '</div>';
 692                 }
 693
 694                 # Hidden categories
 695                 if ( isset( $allCats['hidden'] ) ) {
 696                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 697                                 $class = 'mw-hidden-cats-user-shown';
 698                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 699                                 $class = 'mw-hidden-cats-ns-shown';
 700                         } else {
 701                                 $class = 'mw-hidden-cats-hidden';
 702                         }
 703
 704                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 705                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 706                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 707                                 '</div>';
 708                 }
 709
 710                 # optional 'dmoz-like' category browser. Will be shown under the list
 711                 # of categories an article belong to
 712                 if ( $wgUseCategoryBrowser ) {
 713                         $s .= '<br /><hr />';
 714
 715                         # get a big array of the parents tree
 716                         $parenttree = $this->mTitle->getParentCategoryTree();
 717                         # Skin object passed by reference cause it can not be
 718                         # accessed under the method subfunction drawCategoryBrowser
 719                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 720                         # Clean out bogus first entry and sort them
 721                         unset( $tempout[0] );
 722                         asort( $tempout );
 723                         # Output one per line
 724                         $s .= implode( "<br />\n", $tempout );
 725                 }
 726
 727                 return $s;
 728         }
 729
 730         /**
 731          * Render the array as a serie of links.
 732          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 733          * @param &skin Object: skin passed by reference
 734          * @return String separated by &gt;, terminate with "\n"
 735          */
 736         function drawCategoryBrowser( $tree, &$skin ) {
 737                 $return = '';
 738
 739                 foreach ( $tree as $element => $parent ) {
 740                         if ( empty( $parent ) ) {
 741                                 # element start a new list
 742                                 $return .= "\n";
 743                         } else {
 744                                 # grab the others elements
 745                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 746                         }
 747
 748                         # add our current element to the list
 749                         $eltitle = Title::newFromText( $element );
 750                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 751                 }
 752
 753                 return $return;
 754         }
 755
 756         /**
 757          * The ->getCategories() form is deprecated, please instead use
 758          * the ->getCategories( $out ) form with whatout OutputPage is on hand
 759          */
 760         function getCategories( OutputPage $out=null ) {
 761                 if ( is_null( $out ) ) {
 762                         // Backwards compatibility for when there was no $out arg
 763                         global $wgOut;
 764                         $out = $wgOut;
 765                 }
 766
 767                 $catlinks = $this->getCategoryLinks( $out );
 768
 769                 $classes = 'catlinks';
 770
 771                 global $wgUser;
 772
 773                 // Check what we're showing
 774                 $allCats = $out->getCategoryLinks();
 775                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 776                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 777
 778                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 779                         $classes .= ' catlinks-allhidden';
 780                 }
 781
 782                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 783         }
 784
 785         /**
 786          * This runs a hook to allow extensions placing their stuff after content
 787          * and article metadata (e.g. categories).
 788          * Note: This function has nothing to do with afterContent().
 789          *
 790          * This hook is placed here in order to allow using the same hook for all
 791          * skins, both the SkinTemplate based ones and the older ones, which directly
 792          * use this class to get their data.
 793          *
 794          * The output of this function gets processed in SkinTemplate::outputPage() for
 795          * the SkinTemplate based skins, all other skins should directly echo it.
 796          *
 797          * Returns an empty string by default, if not changed by any hook function.
 798          */
 799         protected function afterContentHook() {
 800                 $data = '';
 801
 802                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 803                         // adding just some spaces shouldn't toggle the output
 804                         // of the whole <div/>, so we use trim() here
 805                         if ( trim( $data ) != '' ) {
 806                                 // Doing this here instead of in the skins to
 807                                 // ensure that the div has the same ID in all
 808                                 // skins
 809                                 $data = "<div id='mw-data-after-content'>\n" .
 810                                         "\t$data\n" .
 811                                         "</div>\n";
 812                         }
 813                 } else {
 814                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 815                 }
 816
 817                 return $data;
 818         }
 819
 820         /**
 821          * Generate debug data HTML for displaying at the bottom of the main content
 822          * area.
 823          * @return String HTML containing debug data, if enabled (otherwise empty).
 824          */
 825         protected function generateDebugHTML( OutputPage $out ) {
 826                 global $wgShowDebug;
 827
 828                 if ( $wgShowDebug ) {
 829                         $listInternals = $this->formatDebugHTML( $out->mDebugtext );
 830                         return "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 831                                 $listInternals . "</ul>\n";
 832                 }
 833
 834                 return '';
 835         }
 836
 837         private function formatDebugHTML( $debugText ) {
 838                 global $wgDebugTimestamps;
 839
 840                 $lines = explode( "\n", $debugText );
 841                 $curIdent = 0;
 842                 $ret = '<li>';
 843
 844                 foreach ( $lines as $line ) {
 845                         $pre = '';
 846                         if ( $wgDebugTimestamps ) {
 847                                 $matches = array();
 848                                 if ( preg_match( '/^(\d+\.\d+\s{2})/', $line, $matches ) ) {
 849                                         $pre = $matches[1];
 850                                         $line = substr( $line, strlen( $pre ) );
 851                                 }
 852                         }
 853                         $display = ltrim( $line );
 854                         $ident = strlen( $line ) - strlen( $display );
 855                         $diff = $ident - $curIdent;
 856
 857                         $display = $pre . $display;
 858                         if ( $display == '' ) {
 859                                 $display = "\xc2\xa0";
 860                         }
 861
 862                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 863                                 $ident = $curIdent;
 864                                 $diff = 0;
 865                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 866                         } else {
 867                                 $display = htmlspecialchars( $display );
 868                         }
 869
 870                         if ( $diff < 0 ) {
 871                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 872                         } elseif ( $diff == 0 ) {
 873                                 $ret .= "</li><li>\n";
 874                         } else {
 875                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 876                         }
 877                         $ret .= "<tt>$display</tt>\n";
 878
 879                         $curIdent = $ident;
 880                 }
 881
 882                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 883
 884                 return $ret;
 885         }
 886
 887         /**
 888          * This gets called shortly before the </body> tag.
 889          * @param $out OutputPage object
 890          * @return String HTML-wrapped JS code to be put before </body>
 891          */
 892         function bottomScripts( $out ) {
 893                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 894                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 895
 896                 return $bottomScriptText;
 897         }
 898
 899         /** @return string Retrievied from HTML text */
 900         function printSource() {
 901                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 902                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 903         }
 904
 905         function getUndeleteLink() {
 906                 global $wgUser, $wgLang, $wgRequest;
 907
 908                 $action = $wgRequest->getVal( 'action', 'view' );
 909
 910                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
 911                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
 912                         $n = $this->mTitle->isDeleted();
 913
 914                         if ( $n ) {
 915                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
 916                                         $msg = 'thisisdeleted';
 917                                 } else {
 918                                         $msg = 'viewdeleted';
 919                                 }
 920
 921                                 return wfMsg(
 922                                         $msg,
 923                                         $this->link(
 924                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
 925                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
 926                                                 array(),
 927                                                 array(),
 928                                                 array( 'known', 'noclasses' )
 929                                         )
 930                                 );
 931                         }
 932                 }
 933
 934                 return '';
 935         }
 936
 937         /**
 938          * The format without an explicit $out argument is deprecated
 939          */
 940         function subPageSubtitle( OutputPage $out=null ) {
 941                 if ( is_null( $out ) ) {
 942                         // Backwards compatibility for when there was no $out arg
 943                         global $wgOut;
 944                         $out = $wgOut;
 945                 }
 946
 947                 $subpages = '';
 948
 949                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 950                         return $subpages;
 951                 }
 952
 953                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 954                         $ptext = $this->mTitle->getPrefixedText();
 955                         if ( preg_match( '/\//', $ptext ) ) {
 956                                 $links = explode( '/', $ptext );
 957                                 array_pop( $links );
 958                                 $c = 0;
 959                                 $growinglink = '';
 960                                 $display = '';
 961
 962                                 foreach ( $links as $link ) {
 963                                         $growinglink .= $link;
 964                                         $display .= $link;
 965                                         $linkObj = Title::newFromText( $growinglink );
 966
 967                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 968                                                 $getlink = $this->link(
 969                                                         $linkObj,
 970                                                         htmlspecialchars( $display ),
 971                                                         array(),
 972                                                         array(),
 973                                                         array( 'known', 'noclasses' )
 974                                                 );
 975
 976                                                 $c++;
 977
 978                                                 if ( $c > 1 ) {
 979                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
 980                                                 } else  {
 981                                                         $subpages .= '&lt; ';
 982                                                 }
 983
 984                                                 $subpages .= $getlink;
 985                                                 $display = '';
 986                                         } else {
 987                                                 $display .= '/';
 988                                         }
 989                                         $growinglink .= '/';
 990                                 }
 991                         }
 992                 }
 993
 994                 return $subpages;
 995         }
 996
 997         /**
 998          * Returns true if the IP should be shown in the header
 999          */
1000         function showIPinHeader() {
1001                 global $wgShowIPinHeader;
1002                 return $wgShowIPinHeader && session_id() != '';
1003         }
1004
1005         function getSearchLink() {
1006                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1007                 return $searchPage->getLocalURL();
1008         }
1009
1010         function escapeSearchLink() {
1011                 return htmlspecialchars( $this->getSearchLink() );
1012         }
1013
1014         function getCopyright( $type = 'detect' ) {
1015                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
1016
1017                 if ( $type == 'detect' ) {
1018                         $diff = $wgRequest->getVal( 'diff' );
1019
1020                         if ( is_null( $diff ) && !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1021                                 $type = 'history';
1022                         } else {
1023                                 $type = 'normal';
1024                         }
1025                 }
1026
1027                 if ( $type == 'history' ) {
1028                         $msg = 'history_copyright';
1029                 } else {
1030                         $msg = 'copyright';
1031                 }
1032
1033                 $out = '';
1034
1035                 if ( $wgRightsPage ) {
1036                         $title = Title::newFromText( $wgRightsPage );
1037                         $link = $this->linkKnown( $title, $wgRightsText );
1038                 } elseif ( $wgRightsUrl ) {
1039                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1040                 } elseif ( $wgRightsText ) {
1041                         $link = $wgRightsText;
1042                 } else {
1043                         # Give up now
1044                         return $out;
1045                 }
1046
1047                 // Allow for site and per-namespace customization of copyright notice.
1048                 $forContent = true;
1049
1050                 wfRunHooks( 'SkinCopyrightFooter', array( $this->mTitle, $type, &$msg, &$link, &$forContent ) );
1051
1052                 if ( $forContent ) {
1053                         $out .= wfMsgForContent( $msg, $link );
1054                 } else {
1055                         $out .= wfMsg( $msg, $link );
1056                 }
1057
1058                 return $out;
1059         }
1060
1061         function getCopyrightIcon() {
1062                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1063
1064                 $out = '';
1065
1066                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1067                         $out = $wgCopyrightIcon;
1068                 } elseif ( $wgRightsIcon ) {
1069                         $icon = htmlspecialchars( $wgRightsIcon );
1070
1071                         if ( $wgRightsUrl ) {
1072                                 $url = htmlspecialchars( $wgRightsUrl );
1073                                 $out .= '<a href="' . $url . '">';
1074                         }
1075
1076                         $text = htmlspecialchars( $wgRightsText );
1077                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1078
1079                         if ( $wgRightsUrl ) {
1080                                 $out .= '</a>';
1081                         }
1082                 }
1083
1084                 return $out;
1085         }
1086
1087         /**
1088          * Gets the powered by MediaWiki icon.
1089          * @return string
1090          */
1091         function getPoweredBy() {
1092                 global $wgStylePath;
1093
1094                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1095                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1096                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
1097                 return $text;
1098         }
1099
1100         /**
1101          * Get the timestamp of the latest revision, formatted in user language
1102          *
1103          * @param $article Article object. Used if we're working with the current revision
1104          * @return String
1105          */
1106         protected function lastModified( $article ) {
1107                 global $wgLang;
1108
1109                 if ( !$this->isRevisionCurrent() ) {
1110                         $timestamp = Revision::getTimestampFromId( $this->mTitle, $this->mRevisionId );
1111                 } else {
1112                         $timestamp = $article->getTimestamp();
1113                 }
1114
1115                 if ( $timestamp ) {
1116                         $d = $wgLang->date( $timestamp, true );
1117                         $t = $wgLang->time( $timestamp, true );
1118                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1119                 } else {
1120                         $s = '';
1121                 }
1122
1123                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1124                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1125                 }
1126
1127                 return $s;
1128         }
1129
1130         function logoText( $align = '' ) {
1131                 if ( $align != '' ) {
1132                         $a = " align='{$align}'";
1133                 } else {
1134                         $a = '';
1135                 }
1136
1137                 $mp = wfMsg( 'mainpage' );
1138                 $mptitle = Title::newMainPage();
1139                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1140
1141                 $logourl = $this->getLogo();
1142                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1143
1144                 return $s;
1145         }
1146
1147         /**
1148          * Renders a $wgFooterIcons icon acording to the method's arguments
1149          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1150          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1151          */
1152         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1153                 if ( is_string( $icon ) ) {
1154                         $html = $icon;
1155                 } else { // Assuming array
1156                         $url = isset($icon["url"]) ? $icon["url"] : null;
1157                         unset( $icon["url"] );
1158                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1159                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1160                         } else {
1161                                 $html = htmlspecialchars( $icon["alt"] );
1162                         }
1163                         if ( $url ) {
1164                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1165                         }
1166                 }
1167                 return $html;
1168         }
1169
1170         /**
1171          * Gets the link to the wiki's main page.
1172          * @return string
1173          */
1174         function mainPageLink() {
1175                 $s = $this->link(
1176                         Title::newMainPage(),
1177                         wfMsg( 'mainpage' ),
1178                         array(),
1179                         array(),
1180                         array( 'known', 'noclasses' )
1181                 );
1182
1183                 return $s;
1184         }
1185
1186         public function footerLink( $desc, $page ) {
1187                 // if the link description has been set to "-" in the default language,
1188                 if ( wfMsgForContent( $desc )  == '-' ) {
1189                         // then it is disabled, for all languages.
1190                         return '';
1191                 } else {
1192                         // Otherwise, we display the link for the user, described in their
1193                         // language (which may or may not be the same as the default language),
1194                         // but we make the link target be the one site-wide page.
1195                         $title = Title::newFromText( wfMsgForContent( $page ) );
1196
1197                         return $this->linkKnown(
1198                                 $title,
1199                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1200                         );
1201                 }
1202         }
1203
1204         /**
1205          * Gets the link to the wiki's privacy policy page.
1206          */
1207         function privacyLink() {
1208                 return $this->footerLink( 'privacy', 'privacypage' );
1209         }
1210
1211         /**
1212          * Gets the link to the wiki's about page.
1213          */
1214         function aboutLink() {
1215                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1216         }
1217
1218         /**
1219          * Gets the link to the wiki's general disclaimers page.
1220          */
1221         function disclaimerLink() {
1222                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1223         }
1224
1225         /**
1226          * Return URL options for the 'edit page' link.
1227          * This may include an 'oldid' specifier, if the current page view is such.
1228          *
1229          * @return array
1230          * @private
1231          */
1232         function editUrlOptions() {
1233                 $options = array( 'action' => 'edit' );
1234
1235                 if ( !$this->isRevisionCurrent() ) {
1236                         $options['oldid'] = intval( $this->mRevisionId );
1237                 }
1238
1239                 return $options;
1240         }
1241
1242         function showEmailUser( $id ) {
1243                 global $wgUser;
1244                 $targetUser = User::newFromId( $id );
1245                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1246                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1247         }
1248
1249         /**
1250          * Return a fully resolved style path url to images or styles stored in the common folder.
1251          * This method returns a url resolved using the configured skin style path
1252          * and includes the style version inside of the url.
1253          * @param $name String: The name or path of a skin resource file
1254          * @return String The fully resolved style path url including styleversion
1255          */
1256         function getCommonStylePath( $name ) {
1257                 global $wgStylePath, $wgStyleVersion;
1258                 return "$wgStylePath/common/$name?$wgStyleVersion";
1259         }
1260
1261         /**
1262          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
1263          * This method returns a url resolved using the configured skin style path
1264          * and includes the style version inside of the url.
1265          * @param $name String: The name or path of a skin resource file
1266          * @return String The fully resolved style path url including styleversion
1267          */
1268         function getSkinStylePath( $name ) {
1269                 global $wgStylePath, $wgStyleVersion;
1270                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1271         }
1272
1273         /* these are used extensively in SkinTemplate, but also some other places */
1274         static function makeMainPageUrl( $urlaction = '' ) {
1275                 $title = Title::newMainPage();
1276                 self::checkTitle( $title, '' );
1277
1278                 return $title->getLocalURL( $urlaction );
1279         }
1280
1281         static function makeSpecialUrl( $name, $urlaction = '' ) {
1282                 $title = SpecialPage::getTitleFor( $name );
1283                 return $title->getLocalURL( $urlaction );
1284         }
1285
1286         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1287                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1288                 return $title->getLocalURL( $urlaction );
1289         }
1290
1291         static function makeI18nUrl( $name, $urlaction = '' ) {
1292                 $title = Title::newFromText( wfMsgForContent( $name ) );
1293                 self::checkTitle( $title, $name );
1294                 return $title->getLocalURL( $urlaction );
1295         }
1296
1297         static function makeUrl( $name, $urlaction = '' ) {
1298                 $title = Title::newFromText( $name );
1299                 self::checkTitle( $title, $name );
1300
1301                 return $title->getLocalURL( $urlaction );
1302         }
1303
1304         /**
1305          * If url string starts with http, consider as external URL, else
1306          * internal
1307          */
1308         static function makeInternalOrExternalUrl( $name ) {
1309                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1310                         return $name;
1311                 } else {
1312                         return self::makeUrl( $name );
1313                 }
1314         }
1315
1316         # this can be passed the NS number as defined in Language.php
1317         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1318                 $title = Title::makeTitleSafe( $namespace, $name );
1319                 self::checkTitle( $title, $name );
1320
1321                 return $title->getLocalURL( $urlaction );
1322         }
1323
1324         /* these return an array with the 'href' and boolean 'exists' */
1325         static function makeUrlDetails( $name, $urlaction = '' ) {
1326                 $title = Title::newFromText( $name );
1327                 self::checkTitle( $title, $name );
1328
1329                 return array(
1330                         'href' => $title->getLocalURL( $urlaction ),
1331                         'exists' => $title->getArticleID() != 0,
1332                 );
1333         }
1334
1335         /**
1336          * Make URL details where the article exists (or at least it's convenient to think so)
1337          */
1338         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1339                 $title = Title::newFromText( $name );
1340                 self::checkTitle( $title, $name );
1341
1342                 return array(
1343                         'href' => $title->getLocalURL( $urlaction ),
1344                         'exists' => true
1345                 );
1346         }
1347
1348         # make sure we have some title to operate on
1349         static function checkTitle( &$title, $name ) {
1350                 if ( !is_object( $title ) ) {
1351                         $title = Title::newFromText( $name );
1352                         if ( !is_object( $title ) ) {
1353                                 $title = Title::newFromText( '--error: link target missing--' );
1354                         }
1355                 }
1356         }
1357
1358         /**
1359          * Build an array that represents the sidebar(s), the navigation bar among them
1360          *
1361          * @return array
1362          */
1363         function buildSidebar() {
1364                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1365                 global $wgLang;
1366                 wfProfileIn( __METHOD__ );
1367
1368                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
1369
1370                 if ( $wgEnableSidebarCache ) {
1371                         $cachedsidebar = $parserMemc->get( $key );
1372                         if ( $cachedsidebar ) {
1373                                 wfProfileOut( __METHOD__ );
1374                                 return $cachedsidebar;
1375                         }
1376                 }
1377
1378                 $bar = array();
1379                 $this->addToSidebar( $bar, 'sidebar' );
1380
1381                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1382                 if ( $wgEnableSidebarCache ) {
1383                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1384                 }
1385
1386                 wfProfileOut( __METHOD__ );
1387                 return $bar;
1388         }
1389         /**
1390          * Add content from a sidebar system message
1391          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1392          *
1393          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1394          *
1395          * @param &$bar array
1396          * @param $message String
1397          */
1398         function addToSidebar( &$bar, $message ) {
1399                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1400         }
1401
1402         /**
1403          * Add content from plain text
1404          * @since 1.17
1405          * @param &$bar array
1406          * @param $text string
1407          */
1408         function addToSidebarPlain( &$bar, $text ) {
1409                 $lines = explode( "\n", $text );
1410                 $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.
1411
1412                 $heading = '';
1413
1414                 foreach ( $lines as $line ) {
1415                         if ( strpos( $line, '*' ) !== 0 ) {
1416                                 continue;
1417                         }
1418
1419                         if ( strpos( $line, '**' ) !== 0 ) {
1420                                 $heading = trim( $line, '* ' );
1421                                 if ( !array_key_exists( $heading, $bar ) ) {
1422                                         $bar[$heading] = array();
1423                                 }
1424                         } else {
1425                                 $line = trim( $line, '* ' );
1426
1427                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1428                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->mTitle );
1429                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1430                                         $link = wfMsgForContent( $line[0] );
1431
1432                                         if ( $link == '-' ) {
1433                                                 continue;
1434                                         }
1435
1436                                         $text = wfMsgExt( $line[1], 'parsemag' );
1437
1438                                         if ( wfEmptyMsg( $line[1] ) ) {
1439                                                 $text = $line[1];
1440                                         }
1441
1442                                         if ( wfEmptyMsg( $line[0] ) ) {
1443                                                 $link = $line[0];
1444                                         }
1445
1446                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1447                                                 $href = $link;
1448                                         } else {
1449                                                 $title = Title::newFromText( $link );
1450
1451                                                 if ( $title ) {
1452                                                         $title = $title->fixSpecialName();
1453                                                         $href = $title->getLocalURL();
1454                                                 } else {
1455                                                         $href = 'INVALID-TITLE';
1456                                                 }
1457                                         }
1458
1459                                         $bar[$heading][] = array(
1460                                                 'text' => $text,
1461                                                 'href' => $href,
1462                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
1463                                                 'active' => false
1464                                         );
1465                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
1466                                         global $wgParser;
1467
1468                                         $line = substr( $line, 2, strlen( $line ) - 4 );
1469
1470                                         $options = new ParserOptions();
1471                                         $options->setEditSection( false );
1472                                         $options->setInterfaceMessage( true );
1473                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $this->mTitle, $options )->getText();
1474                                 } else {
1475                                         continue;
1476                                 }
1477                         }
1478                 }
1479
1480                 if ( count( $wikiBar ) > 0 ) {
1481                         $bar = array_merge( $bar, $wikiBar );
1482                 }
1483
1484                 return $bar;
1485         }
1486
1487         /**
1488          * Should we include common/wikiprintable.css?  Skins that have their own
1489          * print stylesheet should override this and return false.  (This is an
1490          * ugly hack to get Monobook to play nicely with
1491          * OutputPage::headElement().)
1492          *
1493          * @return bool
1494          */
1495         public function commonPrintStylesheet() {
1496                 return true;
1497         }
1498
1499         /**
1500          * Gets new talk page messages for the current user.
1501          * @return MediaWiki message or if no new talk page messages, nothing
1502          * The format without an explicit $out argument is deprecated
1503          */
1504         function getNewtalks( OutputPage $out=null ) {
1505                 global $wgUser;
1506
1507                 if ( is_null( $out ) ) {
1508                         // Backwards compatibility for when there was no $out arg
1509                         global $wgOut;
1510                         $out = $wgOut;
1511                 }
1512
1513                 $newtalks = $wgUser->getNewMessageLinks();
1514                 $ntl = '';
1515
1516                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1517                         $userTitle = $this->mUser->getUserPage();
1518                         $userTalkTitle = $userTitle->getTalkPage();
1519
1520                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1521                                 $newMessagesLink = $this->link(
1522                                         $userTalkTitle,
1523                                         wfMsgHtml( 'newmessageslink' ),
1524                                         array(),
1525                                         array( 'redirect' => 'no' ),
1526                                         array( 'known', 'noclasses' )
1527                                 );
1528
1529                                 $newMessagesDiffLink = $this->link(
1530                                         $userTalkTitle,
1531                                         wfMsgHtml( 'newmessagesdifflink' ),
1532                                         array(),
1533                                         array( 'diff' => 'cur' ),
1534                                         array( 'known', 'noclasses' )
1535                                 );
1536
1537                                 $ntl = wfMsg(
1538                                         'youhavenewmessages',
1539                                         $newMessagesLink,
1540                                         $newMessagesDiffLink
1541                                 );
1542                                 # Disable Squid cache
1543                                 $out->setSquidMaxage( 0 );
1544                         }
1545                 } elseif ( count( $newtalks ) ) {
1546                         // _>" " for BC <= 1.16
1547                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
1548                         $msgs = array();
1549
1550                         foreach ( $newtalks as $newtalk ) {
1551                                 $msgs[] = Xml::element(
1552                                         'a',
1553                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1554                                 );
1555                         }
1556                         $parts = implode( $sep, $msgs );
1557                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
1558                         $out->setSquidMaxage( 0 );
1559                 }
1560
1561                 return $ntl;
1562         }
1563
1564         /**
1565          * Get a cached notice
1566          *
1567          * @param $name String: message name, or 'default' for $wgSiteNotice
1568          * @return String: HTML fragment
1569          */
1570         private function getCachedNotice( $name ) {
1571                 global $wgOut, $wgRenderHashAppend, $parserMemc;
1572
1573                 wfProfileIn( __METHOD__ );
1574
1575                 $needParse = false;
1576
1577                 if( $name === 'default' ) {
1578                         // special case
1579                         global $wgSiteNotice;
1580                         $notice = $wgSiteNotice;
1581                         if( empty( $notice ) ) {
1582                                 wfProfileOut( __METHOD__ );
1583                                 return false;
1584                         }
1585                 } else {
1586                         $msg = wfMessage( $name )->inContentLanguage();
1587                         if( $msg->isDisabled() ) {
1588                                 wfProfileOut( __METHOD__ );
1589                                 return false;
1590                         }
1591                         $notice = $msg->plain();
1592                 }
1593
1594                 // Use the extra hash appender to let eg SSL variants separately cache.
1595                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1596                 $cachedNotice = $parserMemc->get( $key );
1597                 if( is_array( $cachedNotice ) ) {
1598                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1599                                 $notice = $cachedNotice['html'];
1600                         } else {
1601                                 $needParse = true;
1602                         }
1603                 } else {
1604                         $needParse = true;
1605                 }
1606
1607                 if ( $needParse ) {
1608                         if( is_object( $wgOut ) ) {
1609                                 $parsed = $wgOut->parse( $notice );
1610                                 $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1611                                 $notice = $parsed;
1612                         } else {
1613                                 wfDebug( 'Skin::getCachedNotice called for ' . $name . ' with no $wgOut available' . "\n" );
1614                                 $notice = '';
1615                         }
1616                 }
1617
1618                 $notice = '<div id="localNotice">' .$notice . '</div>';
1619                 wfProfileOut( __METHOD__ );
1620                 return $notice;
1621         }
1622
1623         /**
1624          * Get a notice based on page's namespace
1625          *
1626          * @return String: HTML fragment
1627          */
1628         function getNamespaceNotice() {
1629                 wfProfileIn( __METHOD__ );
1630
1631                 $key = 'namespacenotice-' . $this->mTitle->getNsText();
1632                 $namespaceNotice = $this->getCachedNotice( $key );
1633                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1634                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1635                 } else {
1636                         $namespaceNotice = '';
1637                 }
1638
1639                 wfProfileOut( __METHOD__ );
1640                 return $namespaceNotice;
1641         }
1642
1643         /**
1644          * Get the site notice
1645          *
1646          * @return String: HTML fragment
1647          */
1648         function getSiteNotice() {
1649                 global $wgUser;
1650
1651                 wfProfileIn( __METHOD__ );
1652                 $siteNotice = '';
1653
1654                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1655                         if ( is_object( $wgUser ) && $wgUser->isLoggedIn() ) {
1656                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1657                         } else {
1658                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1659                                 if ( !$anonNotice ) {
1660                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1661                                 } else {
1662                                         $siteNotice = $anonNotice;
1663                                 }
1664                         }
1665                         if ( !$siteNotice ) {
1666                                 $siteNotice = $this->getCachedNotice( 'default' );
1667                         }
1668                 }
1669
1670                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1671                 wfProfileOut( __METHOD__ );
1672                 return $siteNotice;
1673 }
1674 }