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