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 {
  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         protected $mRelevantTitle = null;
  27         protected $mRelevantUser = null;
  28
  29         /**
  30          * Fetch the set of available skins.
  31          * @return array of strings
  32          */
  33         static function getSkinNames() {
  34                 global $wgValidSkinNames;
  35                 static $skinsInitialised = false;
  36
  37                 if ( !$skinsInitialised || !count( $wgValidSkinNames ) ) {
  38                         # Get a list of available skins
  39                         # Build using the regular expression '^(.*).php$'
  40                         # Array keys are all lower case, array value keep the case used by filename
  41                         #
  42                         wfProfileIn( __METHOD__ . '-init' );
  43
  44                         global $wgStyleDirectory;
  45
  46                         $skinDir = dir( $wgStyleDirectory );
  47
  48                         # while code from www.php.net
  49                         while ( false !== ( $file = $skinDir->read() ) ) {
  50                                 // Skip non-PHP files, hidden files, and '.dep' includes
  51                                 $matches = array();
  52
  53                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  54                                         $aSkin = $matches[1];
  55                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  56                                 }
  57                         }
  58                         $skinDir->close();
  59                         $skinsInitialised = true;
  60                         wfProfileOut( __METHOD__ . '-init' );
  61                 }
  62                 return $wgValidSkinNames;
  63         }
  64
  65         /**
  66          * Fetch the list of usable skins in regards to $wgSkipSkins.
  67          * Useful for Special:Preferences and other places where you
  68          * only want to show skins users _can_ use.
  69          * @return array of strings
  70          */
  71         public static function getUsableSkins() {
  72                 global $wgSkipSkins;
  73
  74                 $usableSkins = self::getSkinNames();
  75
  76                 foreach ( $wgSkipSkins as $skip ) {
  77                         unset( $usableSkins[$skip] );
  78                 }
  79
  80                 return $usableSkins;
  81         }
  82
  83         /**
  84          * Normalize a skin preference value to a form that can be loaded.
  85          * If a skin can't be found, it will fall back to the configured
  86          * default (or the old 'Classic' skin if that's broken).
  87          * @param $key String: 'monobook', 'standard', etc.
  88          * @return string
  89          */
  90         static function normalizeKey( $key ) {
  91                 global $wgDefaultSkin;
  92
  93                 $skinNames = Skin::getSkinNames();
  94
  95                 if ( $key == '' ) {
  96                         // Don't return the default immediately;
  97                         // in a misconfiguration we need to fall back.
  98                         $key = $wgDefaultSkin;
  99                 }
 100
 101                 if ( isset( $skinNames[$key] ) ) {
 102                         return $key;
 103                 }
 104
 105                 // Older versions of the software used a numeric setting
 106                 // in the user preferences.
 107                 $fallback = array(
 108                         0 => $wgDefaultSkin,
 109                         1 => 'nostalgia',
 110                         2 => 'cologneblue'
 111                 );
 112
 113                 if ( isset( $fallback[$key] ) ) {
 114                         $key = $fallback[$key];
 115                 }
 116
 117                 if ( isset( $skinNames[$key] ) ) {
 118                         return $key;
 119                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 120                         return $wgDefaultSkin;
 121                 } else {
 122                         return 'vector';
 123                 }
 124         }
 125
 126         /**
 127          * Factory method for loading a skin of a given type
 128          * @param $key String: 'monobook', 'standard', etc.
 129          * @return Skin
 130          */
 131         static function &newFromKey( $key ) {
 132                 global $wgStyleDirectory;
 133
 134                 $key = Skin::normalizeKey( $key );
 135
 136                 $skinNames = Skin::getSkinNames();
 137                 $skinName = $skinNames[$key];
 138                 $className = "Skin{$skinName}";
 139
 140                 # Grab the skin class and initialise it.
 141                 if ( !MWInit::classExists( $className ) ) {
 142
 143                         if ( !defined( 'MW_COMPILED' ) ) {
 144                                 // Preload base classes to work around APC/PHP5 bug
 145                                 $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 146                                 if ( file_exists( $deps ) ) {
 147                                         include_once( $deps );
 148                                 }
 149                                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 150                         }
 151
 152                         # Check if we got if not failback to default skin
 153                         if ( !MWInit::classExists( $className ) ) {
 154                                 # DO NOT die if the class isn't found. This breaks maintenance
 155                                 # scripts and can cause a user account to be unrecoverable
 156                                 # except by SQL manipulation if a previously valid skin name
 157                                 # is no longer valid.
 158                                 wfDebug( "Skin class does not exist: $className\n" );
 159                                 $className = 'SkinVector';
 160                                 if ( !defined( 'MW_COMPILED' ) ) {
 161                                         require_once( "{$wgStyleDirectory}/Vector.php" );
 162                                 }
 163                         }
 164                 }
 165                 $skin = new $className;
 166                 return $skin;
 167         }
 168
 169         /** @return string path to the skin stylesheet */
 170         function getStylesheet() {
 171                 return 'common/wikistandard.css';
 172         }
 173
 174         /** @return string skin name */
 175         public function getSkinName() {
 176                 return $this->skinname;
 177         }
 178
 179         function initPage( OutputPage $out ) {
 180                 wfProfileIn( __METHOD__ );
 181
 182                 $this->mRevisionId = $out->mRevisionId;
 183                 $this->preloadExistence();
 184                 $this->setMembers();
 185
 186                 wfProfileOut( __METHOD__ );
 187         }
 188
 189         /**
 190          * Preload the existence of three commonly-requested pages in a single query
 191          */
 192         function preloadExistence() {
 193                 $user = $this->getContext()->getUser();
 194
 195                 // User/talk link
 196                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 197
 198                 // Other tab link
 199                 if ( $this->getTitle()->getNamespace() == NS_SPECIAL ) {
 200                         // nothing
 201                 } elseif ( $this->getTitle()->isTalkPage() ) {
 202                         $titles[] = $this->getTitle()->getSubjectPage();
 203                 } else {
 204                         $titles[] = $this->getTitle()->getTalkPage();
 205                 }
 206
 207                 $lb = new LinkBatch( $titles );
 208                 $lb->setCaller( __METHOD__ );
 209                 $lb->execute();
 210         }
 211
 212         /**
 213          * Set some local variables
 214          */
 215         protected function setMembers() {
 216                 $this->userpage = $this->getContext()->getUser()->getUserPage()->getPrefixedText();
 217                 $this->usercss = false;
 218         }
 219
 220         /**
 221          * Whether the revision displayed is the latest revision of the page
 222          *
 223          * @return Boolean
 224          */
 225         public function isRevisionCurrent() {
 226                 return $this->mRevisionId == 0 || $this->mRevisionId == $this->getTitle()->getLatestRevID();
 227         }
 228
 229         /**
 230          * Set the RequestContext used in this instance
 231          *
 232          * @param RequestContext $context
 233          */
 234         public function setContext( RequestContext $context ) {
 235                 $this->mContext = $context;
 236         }
 237
 238         /**
 239          * Get the RequestContext used in this instance
 240          *
 241          * @return RequestContext
 242          */
 243         public function getContext() {
 244                 if ( !isset($this->mContext) ) {
 245                         wfDebug( __METHOD__ . " called and \$mContext is null. Using RequestContext::getMain(); for sanity\n" );
 246                         $this->mContext = RequestContext::getMain();
 247                 }
 248                 return $this->mContext;
 249         }
 250
 251         /** Get the title
 252          *
 253          * @return Title
 254          */
 255         public function getTitle() {
 256                 return $this->getContext()->getTitle();
 257         }
 258
 259         /** Get the user
 260          *
 261          * @return User
 262          */
 263         public function getUser() {
 264                 return $this->getContext()->getUser();
 265         }
 266
 267         /**
 268          * Set the "relevant" title
 269          * @see self::getRelevantTitle()
 270          * @param $t Title object to use
 271          */
 272         public function setRelevantTitle( $t ) {
 273                 $this->mRelevantTitle = $t;
 274         }
 275
 276         /**
 277          * Return the "relevant" title.
 278          * A "relevant" title is not necessarily the actual title of the page.
 279          * Special pages like Special:MovePage use set the page they are acting on
 280          * as their "relevant" title, this allows the skin system to display things
 281          * such as content tabs which belong to to that page instead of displaying
 282          * a basic special page tab which has almost no meaning.
 283          */
 284         public function getRelevantTitle() {
 285                 if ( isset($this->mRelevantTitle) ) {
 286                         return $this->mRelevantTitle;
 287                 }
 288                 return $this->getTitle();
 289         }
 290
 291         /**
 292          * Set the "relevant" user
 293          * @see self::getRelevantUser()
 294          * @param $u User object to use
 295          */
 296         public function setRelevantUser( $u ) {
 297                 $this->mRelevantUser = $u;
 298         }
 299
 300         /**
 301          * Return the "relevant" user.
 302          * A "relevant" user is similar to a relevant title. Special pages like
 303          * Special:Contributions mark the user which they are relevant to so that
 304          * things like the toolbox can display the information they usually are only
 305          * able to display on a user's userpage and talkpage.
 306          * @return User
 307          */
 308         public function getRelevantUser() {
 309                 if ( isset($this->mRelevantUser) ) {
 310                         return $this->mRelevantUser;
 311                 }
 312                 $title = $this->getRelevantTitle();
 313                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 314                         $rootUser = strtok( $title->getText(), '/' );
 315                         if ( User::isIP( $rootUser ) ) {
 316                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 317                         } else {
 318                                 $user = User::newFromName( $rootUser );
 319                                 if ( $user->isLoggedIn() ) {
 320                                         $this->mRelevantUser = $user;
 321                                 }
 322                         }
 323                         return $this->mRelevantUser;
 324                 }
 325                 return null;
 326         }
 327
 328         /**
 329          * Outputs the HTML generated by other functions.
 330          * @param $out Object: instance of OutputPage
 331          */
 332         abstract function outputPage( OutputPage $out );
 333
 334         static function makeVariablesScript( $data ) {
 335                 if ( $data ) {
 336                         return Html::inlineScript(
 337                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 338                         );
 339                 } else {
 340                         return '';
 341                 }
 342         }
 343
 344         /**
 345          * To make it harder for someone to slip a user a fake
 346          * user-JavaScript or user-CSS preview, a random token
 347          * is associated with the login session. If it's not
 348          * passed back with the preview request, we won't render
 349          * the code.
 350          *
 351          * @param $action String: 'edit', 'submit' etc.
 352          * @return bool
 353          */
 354         public function userCanPreview( $action ) {
 355                 if ( $action != 'submit' ) {
 356                         return false;
 357                 }
 358                 if ( !$this->getContext()->getRequest()->wasPosted() ) {
 359                         return false;
 360                 }
 361                 if ( !$this->getTitle()->userCanEditCssSubpage() ) {
 362                         return false;
 363                 }
 364                 if ( !$this->getTitle()->userCanEditJsSubpage() ) {
 365                         return false;
 366                 }
 367
 368                 return $this->getContext()->getUser()->matchEditToken(
 369                         $this->getContext()->getRequest()->getVal( 'wpEditToken' ) );
 370         }
 371
 372         /**
 373          * Generated JavaScript action=raw&gen=js
 374          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 375          * nated together.  For some bizarre reason, it does *not* return any
 376          * custom user JS from subpages.  Huh?
 377          *
 378          * There's absolutely no reason to have separate Monobook/Common JSes.
 379          * Any JS that cares can just check the skin variable generated at the
 380          * top.  For now Monobook.js will be maintained, but it should be consi-
 381          * dered deprecated.
 382          *
 383          * @param $skinName String: If set, overrides the skin name
 384          * @return string
 385          */
 386         public function generateUserJs( $skinName = null ) {
 387
 388                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 389
 390                 return '';
 391         }
 392
 393         /**
 394          * Generate user stylesheet for action=raw&gen=css
 395          */
 396         public function generateUserStylesheet() {
 397
 398                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 399
 400                 return '';
 401         }
 402
 403         /**
 404          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 405          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 406          */
 407         protected function reallyGenerateUserStylesheet() {
 408
 409                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 410
 411                 return '';
 412         }
 413
 414         /**
 415          * @private
 416          */
 417         function setupUserCss( OutputPage $out ) {
 418                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs;
 419
 420                 wfProfileIn( __METHOD__ );
 421
 422                 $this->setupSkinUserCss( $out );
 423                 // Add any extension CSS
 424                 foreach ( $out->getExtStyle() as $url ) {
 425                         $out->addStyle( $url );
 426                 }
 427
 428                 // Per-site custom styles
 429                 if ( $wgUseSiteCss ) {
 430                         $out->addModuleStyles( array( 'site', 'noscript' ) );
 431                         if( $this->getContext()->getUser()->isLoggedIn() ){
 432                                 $out->addModuleStyles( 'user.groups' );
 433                         }
 434                 }
 435
 436                 // Per-user custom styles
 437                 if ( $wgAllowUserCss ) {
 438                         if ( $this->getTitle()->isCssSubpage() && $this->userCanPreview( $this->getContext()->getRequest()->getVal( 'action' ) ) ) {
 439                                 // @FIXME: properly escape the cdata!
 440                                 $out->addInlineStyle( $this->getContext()->getRequest()->getText( 'wpTextbox1' ) );
 441                         } else {
 442                                 $out->addModuleStyles( 'user' );
 443                         }
 444                 }
 445
 446                 // Per-user preference styles
 447                 if ( $wgAllowUserCssPrefs ) {
 448                         $out->addModuleStyles( 'user.options' );
 449                 }
 450
 451                 wfProfileOut( __METHOD__ );
 452         }
 453
 454         /**
 455          * Get the query to generate a dynamic stylesheet
 456          *
 457          * @return array
 458          */
 459         public static function getDynamicStylesheetQuery() {
 460                 global $wgSquidMaxage;
 461
 462                 return array(
 463                                 'action' => 'raw',
 464                                 'maxage' => $wgSquidMaxage,
 465                                 'usemsgcache' => 'yes',
 466                                 'ctype' => 'text/css',
 467                                 'smaxage' => $wgSquidMaxage,
 468                         );
 469         }
 470
 471         /**
 472          * Add skin specific stylesheets
 473          * @param $out OutputPage
 474          * @delete
 475          */
 476         abstract function setupSkinUserCss( OutputPage $out );
 477
 478         /**
 479          * TODO: document
 480          * @param $title Title
 481          * @return String
 482          */
 483         function getPageClasses( $title ) {
 484                 $numeric = 'ns-' . $title->getNamespace();
 485
 486                 if ( $title->getNamespace() == NS_SPECIAL ) {
 487                         $type = 'ns-special';
 488                         // bug 23315: provide a class based on the canonical special page name without subpages
 489                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 490                         if ( $canonicalName ) {
 491                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 492                         } else {
 493                                 $type .= ' mw-invalidspecialpage';
 494                         }
 495                 } elseif ( $title->isTalkPage() ) {
 496                         $type = 'ns-talk';
 497                 } else {
 498                         $type = 'ns-subject';
 499                 }
 500
 501                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 502
 503                 return "$numeric $type $name";
 504         }
 505
 506         /**
 507          * This will be called by OutputPage::headElement when it is creating the
 508          * <body> tag, skins can override it if they have a need to add in any
 509          * body attributes or classes of their own.
 510          */
 511         function addToBodyAttributes( $out, &$bodyAttrs ) {
 512                 // does nothing by default
 513         }
 514
 515         /**
 516          * URL to the logo
 517          */
 518         function getLogo() {
 519                 global $wgLogo;
 520                 return $wgLogo;
 521         }
 522
 523         /**
 524          * The format without an explicit $out argument is deprecated
 525          */
 526         function getCategoryLinks( OutputPage $out=null ) {
 527                 global $wgUseCategoryBrowser, $wgContLang;
 528
 529                 if( $out === null ){
 530                         $out = $this->getContext()->output;
 531                 }
 532
 533                 if ( count( $out->mCategoryLinks ) == 0 ) {
 534                         return '';
 535                 }
 536
 537                 # Separator
 538                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 539
 540                 // Use Unicode bidi embedding override characters,
 541                 // to make sure links don't smash each other up in ugly ways.
 542                 $dir = $wgContLang->getDir();
 543                 $embed = "<span dir='$dir'>";
 544                 $pop = '</span>';
 545
 546                 $allCats = $out->getCategoryLinks();
 547                 $s = '';
 548                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 549
 550                 if ( !empty( $allCats['normal'] ) ) {
 551                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 552
 553                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 554                         $s .= '<div id="mw-normal-catlinks">' .
 555                                 Linker::link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 556                                 . $colon . $t . '</div>';
 557                 }
 558
 559                 # Hidden categories
 560                 if ( isset( $allCats['hidden'] ) ) {
 561                         if ( $this->getContext()->getUser()->getBoolOption( 'showhiddencats' ) ) {
 562                                 $class = 'mw-hidden-cats-user-shown';
 563                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 564                                 $class = 'mw-hidden-cats-ns-shown';
 565                         } else {
 566                                 $class = 'mw-hidden-cats-hidden';
 567                         }
 568
 569                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 570                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 571                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 572                                 '</div>';
 573                 }
 574
 575                 # optional 'dmoz-like' category browser. Will be shown under the list
 576                 # of categories an article belong to
 577                 if ( $wgUseCategoryBrowser ) {
 578                         $s .= '<br /><hr />';
 579
 580                         # get a big array of the parents tree
 581                         $parenttree = $this->getTitle()->getParentCategoryTree();
 582                         # Skin object passed by reference cause it can not be
 583                         # accessed under the method subfunction drawCategoryBrowser
 584                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 585                         # Clean out bogus first entry and sort them
 586                         unset( $tempout[0] );
 587                         asort( $tempout );
 588                         # Output one per line
 589                         $s .= implode( "<br />\n", $tempout );
 590                 }
 591
 592                 return $s;
 593         }
 594
 595         /**
 596          * Render the array as a serie of links.
 597          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 598          * @return String separated by &gt;, terminate with "\n"
 599          */
 600         function drawCategoryBrowser( $tree ) {
 601                 $return = '';
 602
 603                 foreach ( $tree as $element => $parent ) {
 604                         if ( empty( $parent ) ) {
 605                                 # element start a new list
 606                                 $return .= "\n";
 607                         } else {
 608                                 # grab the others elements
 609                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 610                         }
 611
 612                         # add our current element to the list
 613                         $eltitle = Title::newFromText( $element );
 614                         $return .=  Linker::link( $eltitle, $eltitle->getText() );
 615                 }
 616
 617                 return $return;
 618         }
 619
 620         /**
 621          * The ->getCategories() form is deprecated, please instead use
 622          * the ->getCategories( $out ) form with whatout OutputPage is on hand
 623          */
 624         function getCategories( OutputPage $out=null ) {
 625
 626                 $catlinks = $this->getCategoryLinks( $out );
 627
 628                 $classes = 'catlinks';
 629
 630                 // Check what we're showing
 631                 $allCats = $out->getCategoryLinks();
 632                 $showHidden = $this->getContext()->getUser()->getBoolOption( 'showhiddencats' ) ||
 633                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 634
 635                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 636                         $classes .= ' catlinks-allhidden';
 637                 }
 638
 639                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 640         }
 641
 642         /**
 643          * This runs a hook to allow extensions placing their stuff after content
 644          * and article metadata (e.g. categories).
 645          * Note: This function has nothing to do with afterContent().
 646          *
 647          * This hook is placed here in order to allow using the same hook for all
 648          * skins, both the SkinTemplate based ones and the older ones, which directly
 649          * use this class to get their data.
 650          *
 651          * The output of this function gets processed in SkinTemplate::outputPage() for
 652          * the SkinTemplate based skins, all other skins should directly echo it.
 653          *
 654          * Returns an empty string by default, if not changed by any hook function.
 655          */
 656         protected function afterContentHook() {
 657                 $data = '';
 658
 659                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 660                         // adding just some spaces shouldn't toggle the output
 661                         // of the whole <div/>, so we use trim() here
 662                         if ( trim( $data ) != '' ) {
 663                                 // Doing this here instead of in the skins to
 664                                 // ensure that the div has the same ID in all
 665                                 // skins
 666                                 $data = "<div id='mw-data-after-content'>\n" .
 667                                         "\t$data\n" .
 668                                         "</div>\n";
 669                         }
 670                 } else {
 671                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 672                 }
 673
 674                 return $data;
 675         }
 676
 677         /**
 678          * Generate debug data HTML for displaying at the bottom of the main content
 679          * area.
 680          * @return String HTML containing debug data, if enabled (otherwise empty).
 681          */
 682         protected function generateDebugHTML( OutputPage $out ) {
 683                 global $wgShowDebug;
 684
 685                 if ( $wgShowDebug ) {
 686                         $listInternals = $this->formatDebugHTML( $out->mDebugtext );
 687                         return "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 688                                 $listInternals . "</ul>\n";
 689                 }
 690
 691                 return '';
 692         }
 693
 694         private function formatDebugHTML( $debugText ) {
 695                 global $wgDebugTimestamps;
 696
 697                 $lines = explode( "\n", $debugText );
 698                 $curIdent = 0;
 699                 $ret = '<li>';
 700
 701                 foreach ( $lines as $line ) {
 702                         $pre = '';
 703                         if ( $wgDebugTimestamps ) {
 704                                 $matches = array();
 705                                 if ( preg_match( '/^(\d+\.\d+\s{2})/', $line, $matches ) ) {
 706                                         $pre = $matches[1];
 707                                         $line = substr( $line, strlen( $pre ) );
 708                                 }
 709                         }
 710                         $display = ltrim( $line );
 711                         $ident = strlen( $line ) - strlen( $display );
 712                         $diff = $ident - $curIdent;
 713
 714                         $display = $pre . $display;
 715                         if ( $display == '' ) {
 716                                 $display = "\xc2\xa0";
 717                         }
 718
 719                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 720                                 $ident = $curIdent;
 721                                 $diff = 0;
 722                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 723                         } else {
 724                                 $display = htmlspecialchars( $display );
 725                         }
 726
 727                         if ( $diff < 0 ) {
 728                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 729                         } elseif ( $diff == 0 ) {
 730                                 $ret .= "</li><li>\n";
 731                         } else {
 732                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 733                         }
 734                         $ret .= "<tt>$display</tt>\n";
 735
 736                         $curIdent = $ident;
 737                 }
 738
 739                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 740
 741                 return $ret;
 742         }
 743
 744         /**
 745          * This gets called shortly before the </body> tag.
 746          * @param $out OutputPage object
 747          * @return String HTML-wrapped JS code to be put before </body>
 748          */
 749         function bottomScripts( $out ) {
 750                 // TODO and the suckage continues. This function is really just a wrapper around
 751                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 752                 // up at some point
 753                 $bottomScriptText = $out->getBottomScripts( $this );
 754                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 755
 756                 return $bottomScriptText;
 757         }
 758
 759         /** @return string Retrievied from HTML text */
 760         function printSource() {
 761                 $url = htmlspecialchars( $this->getTitle()->getFullURL() );
 762                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 763         }
 764
 765         function getUndeleteLink() {
 766                 $action = $this->getContext()->getRequest()->getVal( 'action', 'view' );
 767
 768                 if ( $this->getContext()->getUser()->isAllowed( 'deletedhistory' ) &&
 769                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 770                         $n = $this->getTitle()->isDeleted();
 771
 772                         if ( $n ) {
 773                                 if ( $this->getContext()->getUser()->isAllowed( 'undelete' ) ) {
 774                                         $msg = 'thisisdeleted';
 775                                 } else {
 776                                         $msg = 'viewdeleted';
 777                                 }
 778
 779                                 return wfMsg(
 780                                         $msg,
 781                                         Linker::link(
 782                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 783                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $this->getContext()->getLang()->formatNum( $n ) ),
 784                                                 array(),
 785                                                 array(),
 786                                                 array( 'known', 'noclasses' )
 787                                         )
 788                                 );
 789                         }
 790                 }
 791
 792                 return '';
 793         }
 794
 795         /**
 796          * The format without an explicit $out argument is deprecated
 797          */
 798         function subPageSubtitle( OutputPage $out=null ) {
 799                 $out = $this->getContext()->getOutput();
 800                 $subpages = '';
 801
 802                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 803                         return $subpages;
 804                 }
 805
 806                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 807                         $ptext = $this->getTitle()->getPrefixedText();
 808                         if ( preg_match( '/\//', $ptext ) ) {
 809                                 $links = explode( '/', $ptext );
 810                                 array_pop( $links );
 811                                 $c = 0;
 812                                 $growinglink = '';
 813                                 $display = '';
 814
 815                                 foreach ( $links as $link ) {
 816                                         $growinglink .= $link;
 817                                         $display .= $link;
 818                                         $linkObj = Title::newFromText( $growinglink );
 819
 820                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 821                                                 $getlink = $this->link(
 822                                                         $linkObj,
 823                                                         htmlspecialchars( $display ),
 824                                                         array(),
 825                                                         array(),
 826                                                         array( 'known', 'noclasses' )
 827                                                 );
 828
 829                                                 $c++;
 830
 831                                                 if ( $c > 1 ) {
 832                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
 833                                                 } else  {
 834                                                         $subpages .= '&lt; ';
 835                                                 }
 836
 837                                                 $subpages .= $getlink;
 838                                                 $display = '';
 839                                         } else {
 840                                                 $display .= '/';
 841                                         }
 842                                         $growinglink .= '/';
 843                                 }
 844                         }
 845                 }
 846
 847                 return $subpages;
 848         }
 849
 850         /**
 851          * Returns true if the IP should be shown in the header
 852          */
 853         function showIPinHeader() {
 854                 global $wgShowIPinHeader;
 855                 return $wgShowIPinHeader && session_id() != '';
 856         }
 857
 858         function getSearchLink() {
 859                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 860                 return $searchPage->getLocalURL();
 861         }
 862
 863         function escapeSearchLink() {
 864                 return htmlspecialchars( $this->getSearchLink() );
 865         }
 866
 867         function getCopyright( $type = 'detect' ) {
 868                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 869
 870                 if ( $type == 'detect' ) {
 871                         $diff = $this->getContext()->getRequest()->getVal( 'diff' );
 872
 873                         if ( is_null( $diff ) && !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 874                                 $type = 'history';
 875                         } else {
 876                                 $type = 'normal';
 877                         }
 878                 }
 879
 880                 if ( $type == 'history' ) {
 881                         $msg = 'history_copyright';
 882                 } else {
 883                         $msg = 'copyright';
 884                 }
 885
 886                 $out = '';
 887
 888                 if ( $wgRightsPage ) {
 889                         $title = Title::newFromText( $wgRightsPage );
 890                         $link = Linker::linkKnown( $title, $wgRightsText );
 891                 } elseif ( $wgRightsUrl ) {
 892                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 893                 } elseif ( $wgRightsText ) {
 894                         $link = $wgRightsText;
 895                 } else {
 896                         # Give up now
 897                         return $out;
 898                 }
 899
 900                 // Allow for site and per-namespace customization of copyright notice.
 901                 $forContent = true;
 902
 903                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 904
 905                 if ( $forContent ) {
 906                         $out .= wfMsgForContent( $msg, $link );
 907                 } else {
 908                         $out .= wfMsg( $msg, $link );
 909                 }
 910
 911                 return $out;
 912         }
 913
 914         function getCopyrightIcon() {
 915                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 916
 917                 $out = '';
 918
 919                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 920                         $out = $wgCopyrightIcon;
 921                 } elseif ( $wgRightsIcon ) {
 922                         $icon = htmlspecialchars( $wgRightsIcon );
 923
 924                         if ( $wgRightsUrl ) {
 925                                 $url = htmlspecialchars( $wgRightsUrl );
 926                                 $out .= '<a href="' . $url . '">';
 927                         }
 928
 929                         $text = htmlspecialchars( $wgRightsText );
 930                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 931
 932                         if ( $wgRightsUrl ) {
 933                                 $out .= '</a>';
 934                         }
 935                 }
 936
 937                 return $out;
 938         }
 939
 940         /**
 941          * Gets the powered by MediaWiki icon.
 942          * @return string
 943          */
 944         function getPoweredBy() {
 945                 global $wgStylePath;
 946
 947                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 948                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 949                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 950                 return $text;
 951         }
 952
 953         /**
 954          * Get the timestamp of the latest revision, formatted in user language
 955          *
 956          * @param $article Article object. Used if we're working with the current revision
 957          * @return String
 958          */
 959         protected function lastModified( $article ) {
 960                 if ( !$this->isRevisionCurrent() ) {
 961                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->mRevisionId );
 962                 } else {
 963                         $timestamp = $article->getTimestamp();
 964                 }
 965
 966                 if ( $timestamp ) {
 967                         $d = $this->getContext()->getLang()->date( $timestamp, true );
 968                         $t = $this->getContext()->getLang()->time( $timestamp, true );
 969                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
 970                 } else {
 971                         $s = '';
 972                 }
 973
 974                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 975                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
 976                 }
 977
 978                 return $s;
 979         }
 980
 981         function logoText( $align = '' ) {
 982                 if ( $align != '' ) {
 983                         $a = " align='{$align}'";
 984                 } else {
 985                         $a = '';
 986                 }
 987
 988                 $mp = wfMsg( 'mainpage' );
 989                 $mptitle = Title::newMainPage();
 990                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
 991
 992                 $logourl = $this->getLogo();
 993                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 994
 995                 return $s;
 996         }
 997
 998         /**
 999          * Renders a $wgFooterIcons icon acording to the method's arguments
1000          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1001          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1002          */
1003         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1004                 if ( is_string( $icon ) ) {
1005                         $html = $icon;
1006                 } else { // Assuming array
1007                         $url = isset($icon["url"]) ? $icon["url"] : null;
1008                         unset( $icon["url"] );
1009                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1010                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1011                         } else {
1012                                 $html = htmlspecialchars( $icon["alt"] );
1013                         }
1014                         if ( $url ) {
1015                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1016                         }
1017                 }
1018                 return $html;
1019         }
1020
1021         /**
1022          * Gets the link to the wiki's main page.
1023          * @return string
1024          */
1025         function mainPageLink() {
1026                 $s = Linker::link(
1027                         Title::newMainPage(),
1028                         wfMsg( 'mainpage' ),
1029                         array(),
1030                         array(),
1031                         array( 'known', 'noclasses' )
1032                 );
1033
1034                 return $s;
1035         }
1036
1037         public function footerLink( $desc, $page ) {
1038                 // if the link description has been set to "-" in the default language,
1039                 if ( wfMsgForContent( $desc )  == '-' ) {
1040                         // then it is disabled, for all languages.
1041                         return '';
1042                 } else {
1043                         // Otherwise, we display the link for the user, described in their
1044                         // language (which may or may not be the same as the default language),
1045                         // but we make the link target be the one site-wide page.
1046                         $title = Title::newFromText( wfMsgForContent( $page ) );
1047
1048                         return Linker::linkKnown(
1049                                 $title,
1050                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1051                         );
1052                 }
1053         }
1054
1055         /**
1056          * Gets the link to the wiki's privacy policy page.
1057          */
1058         function privacyLink() {
1059                 return $this->footerLink( 'privacy', 'privacypage' );
1060         }
1061
1062         /**
1063          * Gets the link to the wiki's about page.
1064          */
1065         function aboutLink() {
1066                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1067         }
1068
1069         /**
1070          * Gets the link to the wiki's general disclaimers page.
1071          */
1072         function disclaimerLink() {
1073                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1074         }
1075
1076         /**
1077          * Return URL options for the 'edit page' link.
1078          * This may include an 'oldid' specifier, if the current page view is such.
1079          *
1080          * @return array
1081          * @private
1082          */
1083         function editUrlOptions() {
1084                 $options = array( 'action' => 'edit' );
1085
1086                 if ( !$this->isRevisionCurrent() ) {
1087                         $options['oldid'] = intval( $this->mRevisionId );
1088                 }
1089
1090                 return $options;
1091         }
1092
1093         function showEmailUser( $id ) {
1094                 $targetUser = User::newFromId( $id );
1095                 return $this->getContext()->getUser()->canSendEmail() && # the sending user must have a confirmed email address
1096                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1097         }
1098
1099         /**
1100          * Return a fully resolved style path url to images or styles stored in the common folder.
1101          * This method returns a url resolved using the configured skin style path
1102          * and includes the style version inside of the url.
1103          * @param $name String: The name or path of a skin resource file
1104          * @return String The fully resolved style path url including styleversion
1105          */
1106         function getCommonStylePath( $name ) {
1107                 global $wgStylePath, $wgStyleVersion;
1108                 return "$wgStylePath/common/$name?$wgStyleVersion";
1109         }
1110
1111         /**
1112          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
1113          * This method returns a url resolved using the configured skin style path
1114          * and includes the style version inside of the url.
1115          * @param $name String: The name or path of a skin resource file
1116          * @return String The fully resolved style path url including styleversion
1117          */
1118         function getSkinStylePath( $name ) {
1119                 global $wgStylePath, $wgStyleVersion;
1120                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1121         }
1122
1123         /* these are used extensively in SkinTemplate, but also some other places */
1124         static function makeMainPageUrl( $urlaction = '' ) {
1125                 $title = Title::newMainPage();
1126                 self::checkTitle( $title, '' );
1127
1128                 return $title->getLocalURL( $urlaction );
1129         }
1130
1131         static function makeSpecialUrl( $name, $urlaction = '' ) {
1132                 $title = SpecialPage::getSafeTitleFor( $name );
1133                 return $title->getLocalURL( $urlaction );
1134         }
1135
1136         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1137                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1138                 return $title->getLocalURL( $urlaction );
1139         }
1140
1141         static function makeI18nUrl( $name, $urlaction = '' ) {
1142                 $title = Title::newFromText( wfMsgForContent( $name ) );
1143                 self::checkTitle( $title, $name );
1144                 return $title->getLocalURL( $urlaction );
1145         }
1146
1147         static function makeUrl( $name, $urlaction = '' ) {
1148                 $title = Title::newFromText( $name );
1149                 self::checkTitle( $title, $name );
1150
1151                 return $title->getLocalURL( $urlaction );
1152         }
1153
1154         /**
1155          * If url string starts with http, consider as external URL, else
1156          * internal
1157          */
1158         static function makeInternalOrExternalUrl( $name ) {
1159                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1160                         return $name;
1161                 } else {
1162                         return self::makeUrl( $name );
1163                 }
1164         }
1165
1166         # this can be passed the NS number as defined in Language.php
1167         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1168                 $title = Title::makeTitleSafe( $namespace, $name );
1169                 self::checkTitle( $title, $name );
1170
1171                 return $title->getLocalURL( $urlaction );
1172         }
1173
1174         /* these return an array with the 'href' and boolean 'exists' */
1175         static function makeUrlDetails( $name, $urlaction = '' ) {
1176                 $title = Title::newFromText( $name );
1177                 self::checkTitle( $title, $name );
1178
1179                 return array(
1180                         'href' => $title->getLocalURL( $urlaction ),
1181                         'exists' => $title->getArticleID() != 0,
1182                 );
1183         }
1184
1185         /**
1186          * Make URL details where the article exists (or at least it's convenient to think so)
1187          */
1188         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1189                 $title = Title::newFromText( $name );
1190                 self::checkTitle( $title, $name );
1191
1192                 return array(
1193                         'href' => $title->getLocalURL( $urlaction ),
1194                         'exists' => true
1195                 );
1196         }
1197
1198         # make sure we have some title to operate on
1199         static function checkTitle( &$title, $name ) {
1200                 if ( !is_object( $title ) ) {
1201                         $title = Title::newFromText( $name );
1202                         if ( !is_object( $title ) ) {
1203                                 $title = Title::newFromText( '--error: link target missing--' );
1204                         }
1205                 }
1206         }
1207
1208         /**
1209          * Build an array that represents the sidebar(s), the navigation bar among them
1210          *
1211          * @return array
1212          */
1213         function buildSidebar() {
1214                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1215                 wfProfileIn( __METHOD__ );
1216
1217                 $key = wfMemcKey( 'sidebar', $this->getContext()->getLang()->getCode() );
1218
1219                 if ( $wgEnableSidebarCache ) {
1220                         $cachedsidebar = $parserMemc->get( $key );
1221                         if ( $cachedsidebar ) {
1222                                 wfProfileOut( __METHOD__ );
1223                                 return $cachedsidebar;
1224                         }
1225                 }
1226
1227                 $bar = array();
1228                 $this->addToSidebar( $bar, 'sidebar' );
1229
1230                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1231                 if ( $wgEnableSidebarCache ) {
1232                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1233                 }
1234
1235                 wfProfileOut( __METHOD__ );
1236                 return $bar;
1237         }
1238         /**
1239          * Add content from a sidebar system message
1240          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1241          *
1242          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1243          *
1244          * @param &$bar array
1245          * @param $message String
1246          */
1247         function addToSidebar( &$bar, $message ) {
1248                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1249         }
1250
1251         /**
1252          * Add content from plain text
1253          * @since 1.17
1254          * @param &$bar array
1255          * @param $text string
1256          */
1257         function addToSidebarPlain( &$bar, $text ) {
1258                 $lines = explode( "\n", $text );
1259                 $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.
1260
1261                 $heading = '';
1262
1263                 foreach ( $lines as $line ) {
1264                         if ( strpos( $line, '*' ) !== 0 ) {
1265                                 continue;
1266                         }
1267
1268                         if ( strpos( $line, '**' ) !== 0 ) {
1269                                 $heading = trim( $line, '* ' );
1270                                 if ( !array_key_exists( $heading, $bar ) ) {
1271                                         $bar[$heading] = array();
1272                                 }
1273                         } else {
1274                                 $line = trim( $line, '* ' );
1275
1276                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1277                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1278                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1279                                         $link = wfMsgForContent( $line[0] );
1280
1281                                         if ( $link == '-' ) {
1282                                                 continue;
1283                                         }
1284
1285                                         $text = wfMsgExt( $line[1], 'parsemag' );
1286
1287                                         if ( wfEmptyMsg( $line[1] ) ) {
1288                                                 $text = $line[1];
1289                                         }
1290
1291                                         if ( wfEmptyMsg( $line[0] ) ) {
1292                                                 $link = $line[0];
1293                                         }
1294
1295                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1296                                                 $href = $link;
1297                                         } else {
1298                                                 $title = Title::newFromText( $link );
1299
1300                                                 if ( $title ) {
1301                                                         $title = $title->fixSpecialName();
1302                                                         $href = $title->getLocalURL();
1303                                                 } else {
1304                                                         $href = 'INVALID-TITLE';
1305                                                 }
1306                                         }
1307
1308                                         $bar[$heading][] = array(
1309                                                 'text' => $text,
1310                                                 'href' => $href,
1311                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
1312                                                 'active' => false
1313                                         );
1314                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
1315                                         global $wgParser;
1316
1317                                         $line = substr( $line, 2, strlen( $line ) - 4 );
1318
1319                                         $options = new ParserOptions();
1320                                         $options->setEditSection( false );
1321                                         $options->setInterfaceMessage( true );
1322                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $this->getTitle(), $options )->getText();
1323                                 } else {
1324                                         continue;
1325                                 }
1326                         }
1327                 }
1328
1329                 if ( count( $wikiBar ) > 0 ) {
1330                         $bar = array_merge( $bar, $wikiBar );
1331                 }
1332
1333                 return $bar;
1334         }
1335
1336         /**
1337          * Should we include common/wikiprintable.css?  Skins that have their own
1338          * print stylesheet should override this and return false.  (This is an
1339          * ugly hack to get Monobook to play nicely with
1340          * OutputPage::headElement().)
1341          *
1342          * @return bool
1343          */
1344         public function commonPrintStylesheet() {
1345                 return true;
1346         }
1347
1348         /**
1349          * Gets new talk page messages for the current user.
1350          * @return MediaWiki message or if no new talk page messages, nothing
1351          */
1352         function getNewtalks() {
1353                 $out = $this->getContext()->getOutput();
1354
1355                 $newtalks = $this->getContext()->getUser()->getNewMessageLinks();
1356                 $ntl = '';
1357
1358                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1359                         $userTitle = $this->getUser()->getUserPage();
1360                         $userTalkTitle = $userTitle->getTalkPage();
1361
1362                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1363                                 $newMessagesLink = $this->link(
1364                                         $userTalkTitle,
1365                                         wfMsgHtml( 'newmessageslink' ),
1366                                         array(),
1367                                         array( 'redirect' => 'no' ),
1368                                         array( 'known', 'noclasses' )
1369                                 );
1370
1371                                 $newMessagesDiffLink = $this->link(
1372                                         $userTalkTitle,
1373                                         wfMsgHtml( 'newmessagesdifflink' ),
1374                                         array(),
1375                                         array( 'diff' => 'cur' ),
1376                                         array( 'known', 'noclasses' )
1377                                 );
1378
1379                                 $ntl = wfMsg(
1380                                         'youhavenewmessages',
1381                                         $newMessagesLink,
1382                                         $newMessagesDiffLink
1383                                 );
1384                                 # Disable Squid cache
1385                                 $out->setSquidMaxage( 0 );
1386                         }
1387                 } elseif ( count( $newtalks ) ) {
1388                         // _>" " for BC <= 1.16
1389                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
1390                         $msgs = array();
1391
1392                         foreach ( $newtalks as $newtalk ) {
1393                                 $msgs[] = Xml::element(
1394                                         'a',
1395                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1396                                 );
1397                         }
1398                         $parts = implode( $sep, $msgs );
1399                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
1400                         $out->setSquidMaxage( 0 );
1401                 }
1402
1403                 return $ntl;
1404         }
1405
1406         /**
1407          * Get a cached notice
1408          *
1409          * @param $name String: message name, or 'default' for $wgSiteNotice
1410          * @return String: HTML fragment
1411          */
1412         private function getCachedNotice( $name ) {
1413                 global $wgRenderHashAppend, $parserMemc;
1414
1415                 wfProfileIn( __METHOD__ );
1416
1417                 $needParse = false;
1418
1419                 if( $name === 'default' ) {
1420                         // special case
1421                         global $wgSiteNotice;
1422                         $notice = $wgSiteNotice;
1423                         if( empty( $notice ) ) {
1424                                 wfProfileOut( __METHOD__ );
1425                                 return false;
1426                         }
1427                 } else {
1428                         $msg = wfMessage( $name )->inContentLanguage();
1429                         if( $msg->isDisabled() ) {
1430                                 wfProfileOut( __METHOD__ );
1431                                 return false;
1432                         }
1433                         $notice = $msg->plain();
1434                 }
1435
1436                 // Use the extra hash appender to let eg SSL variants separately cache.
1437                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1438                 $cachedNotice = $parserMemc->get( $key );
1439                 if( is_array( $cachedNotice ) ) {
1440                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1441                                 $notice = $cachedNotice['html'];
1442                         } else {
1443                                 $needParse = true;
1444                         }
1445                 } else {
1446                         $needParse = true;
1447                 }
1448
1449                 if ( $needParse ) {
1450                         $parsed = $this->getContext()->getOutput()->parse( $notice );
1451                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1452                         $notice = $parsed;
1453                 }
1454
1455                 $notice = '<div id="localNotice">' .$notice . '</div>';
1456                 wfProfileOut( __METHOD__ );
1457                 return $notice;
1458         }
1459
1460         /**
1461          * Get a notice based on page's namespace
1462          *
1463          * @return String: HTML fragment
1464          */
1465         function getNamespaceNotice() {
1466                 wfProfileIn( __METHOD__ );
1467
1468                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1469                 $namespaceNotice = $this->getCachedNotice( $key );
1470                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1471                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1472                 } else {
1473                         $namespaceNotice = '';
1474                 }
1475
1476                 wfProfileOut( __METHOD__ );
1477                 return $namespaceNotice;
1478         }
1479
1480         /**
1481          * Get the site notice
1482          *
1483          * @return String: HTML fragment
1484          */
1485         function getSiteNotice() {
1486                 wfProfileIn( __METHOD__ );
1487                 $siteNotice = '';
1488
1489                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1490                         if ( is_object( $this->getContext()->getUser() ) && $this->getContext()->getUser()->isLoggedIn() ) {
1491                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1492                         } else {
1493                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1494                                 if ( !$anonNotice ) {
1495                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1496                                 } else {
1497                                         $siteNotice = $anonNotice;
1498                                 }
1499                         }
1500                         if ( !$siteNotice ) {
1501                                 $siteNotice = $this->getCachedNotice( 'default' );
1502                         }
1503                 }
1504
1505                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1506                 wfProfileOut( __METHOD__ );
1507                 return $siteNotice;
1508         }
1509
1510         /**
1511          * Create a section edit link.  This supersedes editSectionLink() and
1512          * editSectionLinkForOther().
1513          *
1514          * @param $nt      Title  The title being linked to (may not be the same as
1515          *   $wgTitle, if the section is included from a template)
1516          * @param $section string The designation of the section being pointed to,
1517          *   to be included in the link, like "&section=$section"
1518          * @param $tooltip string The tooltip to use for the link: will be escaped
1519          *   and wrapped in the 'editsectionhint' message
1520          * @param $lang    string Language code
1521          * @return         string HTML to use for edit link
1522          */
1523         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1524                 // HTML generated here should probably have userlangattributes
1525                 // added to it for LTR text on RTL pages
1526                 $attribs = array();
1527                 if ( !is_null( $tooltip ) ) {
1528                         # Bug 25462: undo double-escaping.
1529                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1530                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1531                 }
1532                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1533                         $attribs,
1534                         array( 'action' => 'edit', 'section' => $section ),
1535                         array( 'noclasses', 'known' )
1536                 );
1537
1538                 # Run the old hook.  This takes up half of the function . . . hopefully
1539                 # we can rid of it someday.
1540                 $attribs = '';
1541                 if ( $tooltip ) {
1542                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1543                         $attribs = " title=\"$attribs\"";
1544                 }
1545                 $result = null;
1546                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1547                 if ( !is_null( $result ) ) {
1548                         # For reverse compatibility, add the brackets *after* the hook is
1549                         # run, and even add them to hook-provided text.  (This is the main
1550                         # reason that the EditSectionLink hook is deprecated in favor of
1551                         # DoEditSectionLink: it can't change the brackets or the span.)
1552                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1553                         return "<span class=\"editsection\">$result</span>";
1554                 }
1555
1556                 # Add the brackets and the span, and *then* run the nice new hook, with
1557                 # clean and non-redundant arguments.
1558                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1559                 $result = "<span class=\"editsection\">$result</span>";
1560
1561                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1562                 return $result;
1563         }
1564
1565         /**
1566          * Use PHP's magic __call handler to intercept legacy calls to the linker
1567          * for backwards compatibility.
1568          *
1569          * @param $fname String Name of called method
1570          * @param $args Array Arguments to the method
1571          */
1572         function __call( $fname, $args ) {
1573                 $realFunction = array( 'Linker', $fname );
1574                 if ( is_callable( $realFunction ) ) {
1575                         return call_user_func_array( $realFunction, $args );
1576                 } else {
1577                         $className = get_class( $this );
1578                         throw new MWException( "Call to undefined method $className::$fname" );
1579                 }
1580         }
1581
1582 }