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 $skinname = 'standard';
  25         protected $mRelevantTitle = null;
  26         protected $mRelevantUser = null;
  27
  28         /**
  29          * Fetch the set of available skins.
  30          * @return array of strings
  31          */
  32         static function getSkinNames() {
  33                 global $wgValidSkinNames;
  34                 static $skinsInitialised = false;
  35
  36                 if ( !$skinsInitialised || !count( $wgValidSkinNames ) ) {
  37                         # Get a list of available skins
  38                         # Build using the regular expression '^(.*).php$'
  39                         # Array keys are all lower case, array value keep the case used by filename
  40                         #
  41                         wfProfileIn( __METHOD__ . '-init' );
  42
  43                         global $wgStyleDirectory;
  44
  45                         $skinDir = dir( $wgStyleDirectory );
  46
  47                         # while code from www.php.net
  48                         while ( false !== ( $file = $skinDir->read() ) ) {
  49                                 // Skip non-PHP files, hidden files, and '.dep' includes
  50                                 $matches = array();
  51
  52                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  53                                         $aSkin = $matches[1];
  54                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  55                                 }
  56                         }
  57                         $skinDir->close();
  58                         $skinsInitialised = true;
  59                         wfProfileOut( __METHOD__ . '-init' );
  60                 }
  61                 return $wgValidSkinNames;
  62         }
  63
  64         /**
  65          * Fetch the list of usable skins in regards to $wgSkipSkins.
  66          * Useful for Special:Preferences and other places where you
  67          * only want to show skins users _can_ use.
  68          * @return array of strings
  69          */
  70         public static function getUsableSkins() {
  71                 global $wgSkipSkins;
  72
  73                 $usableSkins = self::getSkinNames();
  74
  75                 foreach ( $wgSkipSkins as $skip ) {
  76                         unset( $usableSkins[$skip] );
  77                 }
  78
  79                 return $usableSkins;
  80         }
  81
  82         /**
  83          * Normalize a skin preference value to a form that can be loaded.
  84          * If a skin can't be found, it will fall back to the configured
  85          * default (or the old 'Classic' skin if that's broken).
  86          * @param $key String: 'monobook', 'standard', etc.
  87          * @return string
  88          */
  89         static function normalizeKey( $key ) {
  90                 global $wgDefaultSkin;
  91
  92                 $skinNames = Skin::getSkinNames();
  93
  94                 if ( $key == '' ) {
  95                         // Don't return the default immediately;
  96                         // in a misconfiguration we need to fall back.
  97                         $key = $wgDefaultSkin;
  98                 }
  99
 100                 if ( isset( $skinNames[$key] ) ) {
 101                         return $key;
 102                 }
 103
 104                 // Older versions of the software used a numeric setting
 105                 // in the user preferences.
 106                 $fallback = array(
 107                         0 => $wgDefaultSkin,
 108                         1 => 'nostalgia',
 109                         2 => 'cologneblue'
 110                 );
 111
 112                 if ( isset( $fallback[$key] ) ) {
 113                         $key = $fallback[$key];
 114                 }
 115
 116                 if ( isset( $skinNames[$key] ) ) {
 117                         return $key;
 118                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 119                         return $wgDefaultSkin;
 120                 } else {
 121                         return 'vector';
 122                 }
 123         }
 124
 125         /**
 126          * Factory method for loading a skin of a given type
 127          * @param $key String: 'monobook', 'standard', etc.
 128          * @return Skin
 129          */
 130         static function &newFromKey( $key ) {
 131                 global $wgStyleDirectory;
 132
 133                 $key = Skin::normalizeKey( $key );
 134
 135                 $skinNames = Skin::getSkinNames();
 136                 $skinName = $skinNames[$key];
 137                 $className = "Skin{$skinName}";
 138
 139                 # Grab the skin class and initialise it.
 140                 if ( !MWInit::classExists( $className ) ) {
 141
 142                         if ( !defined( 'MW_COMPILED' ) ) {
 143                                 // Preload base classes to work around APC/PHP5 bug
 144                                 $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 145                                 if ( file_exists( $deps ) ) {
 146                                         include_once( $deps );
 147                                 }
 148                                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 149                         }
 150
 151                         # Check if we got if not failback to default skin
 152                         if ( !MWInit::classExists( $className ) ) {
 153                                 # DO NOT die if the class isn't found. This breaks maintenance
 154                                 # scripts and can cause a user account to be unrecoverable
 155                                 # except by SQL manipulation if a previously valid skin name
 156                                 # is no longer valid.
 157                                 wfDebug( "Skin class does not exist: $className\n" );
 158                                 $className = 'SkinVector';
 159                                 if ( !defined( 'MW_COMPILED' ) ) {
 160                                         require_once( "{$wgStyleDirectory}/Vector.php" );
 161                                 }
 162                         }
 163                 }
 164                 $skin = new $className;
 165                 return $skin;
 166         }
 167
 168         /** @return string path to the skin stylesheet */
 169         function getStylesheet() {
 170                 return 'common/wikistandard.css';
 171         }
 172
 173         /** @return string skin name */
 174         public function getSkinName() {
 175                 return $this->skinname;
 176         }
 177
 178         function initPage( OutputPage $out ) {
 179                 wfProfileIn( __METHOD__ );
 180
 181                 $this->preloadExistence();
 182                 $this->setMembers();
 183
 184                 wfProfileOut( __METHOD__ );
 185         }
 186
 187         /**
 188          * Preload the existence of three commonly-requested pages in a single query
 189          */
 190         function preloadExistence() {
 191                 $user = $this->getContext()->getUser();
 192
 193                 // User/talk link
 194                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 195
 196                 // Other tab link
 197                 if ( $this->getTitle()->getNamespace() == NS_SPECIAL ) {
 198                         // nothing
 199                 } elseif ( $this->getTitle()->isTalkPage() ) {
 200                         $titles[] = $this->getTitle()->getSubjectPage();
 201                 } else {
 202                         $titles[] = $this->getTitle()->getTalkPage();
 203                 }
 204
 205                 $lb = new LinkBatch( $titles );
 206                 $lb->setCaller( __METHOD__ );
 207                 $lb->execute();
 208         }
 209
 210         /**
 211          * Set some local variables
 212          */
 213         protected function setMembers() {
 214                 $this->userpage = $this->getContext()->getUser()->getUserPage()->getPrefixedText();
 215                 $this->usercss = false;
 216         }
 217
 218         /**
 219          * Set the RequestContext used in this instance
 220          *
 221          * @param RequestContext $context
 222          */
 223         public function setContext( RequestContext $context ) {
 224                 $this->mContext = $context;
 225         }
 226
 227         /**
 228          * Get the RequestContext used in this instance
 229          *
 230          * @return RequestContext
 231          */
 232         public function getContext() {
 233                 if ( !isset($this->mContext) ) {
 234                         wfDebug( __METHOD__ . " called and \$mContext is null. Using RequestContext::getMain(); for sanity\n" );
 235                         $this->mContext = RequestContext::getMain();
 236                 }
 237                 return $this->mContext;
 238         }
 239
 240         /** Get the title
 241          *
 242          * @return Title
 243          */
 244         public function getTitle() {
 245                 return $this->getContext()->getTitle();
 246         }
 247
 248         /** Get the user
 249          *
 250          * @return User
 251          */
 252         public function getUser() {
 253                 return $this->getContext()->getUser();
 254         }
 255
 256         /**
 257          * Get the current revision ID
 258          *
 259          * @return Integer
 260          */
 261         public function getRevisionId() {
 262                 return $this->getContext()->getOutput()->getRevisionId();
 263         }
 264
 265         /**
 266          * Whether the revision displayed is the latest revision of the page
 267          *
 268          * @return Boolean
 269          */
 270         public function isRevisionCurrent() {
 271                 $revID = $this->getRevisionId();
 272                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 273         }
 274
 275         /**
 276          * Set the "relevant" title
 277          * @see self::getRelevantTitle()
 278          * @param $t Title object to use
 279          */
 280         public function setRelevantTitle( $t ) {
 281                 $this->mRelevantTitle = $t;
 282         }
 283
 284         /**
 285          * Return the "relevant" title.
 286          * A "relevant" title is not necessarily the actual title of the page.
 287          * Special pages like Special:MovePage use set the page they are acting on
 288          * as their "relevant" title, this allows the skin system to display things
 289          * such as content tabs which belong to to that page instead of displaying
 290          * a basic special page tab which has almost no meaning.
 291          */
 292         public function getRelevantTitle() {
 293                 if ( isset($this->mRelevantTitle) ) {
 294                         return $this->mRelevantTitle;
 295                 }
 296                 return $this->getTitle();
 297         }
 298
 299         /**
 300          * Set the "relevant" user
 301          * @see self::getRelevantUser()
 302          * @param $u User object to use
 303          */
 304         public function setRelevantUser( $u ) {
 305                 $this->mRelevantUser = $u;
 306         }
 307
 308         /**
 309          * Return the "relevant" user.
 310          * A "relevant" user is similar to a relevant title. Special pages like
 311          * Special:Contributions mark the user which they are relevant to so that
 312          * things like the toolbox can display the information they usually are only
 313          * able to display on a user's userpage and talkpage.
 314          * @return User
 315          */
 316         public function getRelevantUser() {
 317                 if ( isset($this->mRelevantUser) ) {
 318                         return $this->mRelevantUser;
 319                 }
 320                 $title = $this->getRelevantTitle();
 321                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 322                         $rootUser = strtok( $title->getText(), '/' );
 323                         if ( User::isIP( $rootUser ) ) {
 324                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 325                         } else {
 326                                 $user = User::newFromName( $rootUser );
 327                                 if ( $user->isLoggedIn() ) {
 328                                         $this->mRelevantUser = $user;
 329                                 }
 330                         }
 331                         return $this->mRelevantUser;
 332                 }
 333                 return null;
 334         }
 335
 336         /**
 337          * Outputs the HTML generated by other functions.
 338          * @param $out Object: instance of OutputPage
 339          */
 340         abstract function outputPage( OutputPage $out );
 341
 342         static function makeVariablesScript( $data ) {
 343                 if ( $data ) {
 344                         return Html::inlineScript(
 345                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 346                         );
 347                 } else {
 348                         return '';
 349                 }
 350         }
 351
 352         /**
 353          * To make it harder for someone to slip a user a fake
 354          * user-JavaScript or user-CSS preview, a random token
 355          * is associated with the login session. If it's not
 356          * passed back with the preview request, we won't render
 357          * the code.
 358          *
 359          * @param $action String: 'edit', 'submit' etc.
 360          * @return bool
 361          */
 362         public function userCanPreview( $action ) {
 363                 if ( $action != 'submit' ) {
 364                         return false;
 365                 }
 366                 if ( !$this->getContext()->getRequest()->wasPosted() ) {
 367                         return false;
 368                 }
 369                 if ( !$this->getTitle()->userCanEditCssSubpage() ) {
 370                         return false;
 371                 }
 372                 if ( !$this->getTitle()->userCanEditJsSubpage() ) {
 373                         return false;
 374                 }
 375
 376                 return $this->getContext()->getUser()->matchEditToken(
 377                         $this->getContext()->getRequest()->getVal( 'wpEditToken' ) );
 378         }
 379
 380         /**
 381          * Generated JavaScript action=raw&gen=js
 382          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 383          * nated together.  For some bizarre reason, it does *not* return any
 384          * custom user JS from subpages.  Huh?
 385          *
 386          * There's absolutely no reason to have separate Monobook/Common JSes.
 387          * Any JS that cares can just check the skin variable generated at the
 388          * top.  For now Monobook.js will be maintained, but it should be consi-
 389          * dered deprecated.
 390          *
 391          * @param $skinName String: If set, overrides the skin name
 392          * @return string
 393          */
 394         public function generateUserJs( $skinName = null ) {
 395
 396                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 397
 398                 return '';
 399         }
 400
 401         /**
 402          * Generate user stylesheet for action=raw&gen=css
 403          */
 404         public function generateUserStylesheet() {
 405
 406                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 407
 408                 return '';
 409         }
 410
 411         /**
 412          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 413          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 414          */
 415         protected function reallyGenerateUserStylesheet() {
 416
 417                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 418
 419                 return '';
 420         }
 421
 422         /**
 423          * @private
 424          */
 425         function setupUserCss( OutputPage $out ) {
 426                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs;
 427
 428                 wfProfileIn( __METHOD__ );
 429
 430                 $this->setupSkinUserCss( $out );
 431                 // Add any extension CSS
 432                 foreach ( $out->getExtStyle() as $url ) {
 433                         $out->addStyle( $url );
 434                 }
 435
 436                 // Per-site custom styles
 437                 if ( $wgUseSiteCss ) {
 438                         $out->addModuleStyles( array( 'site', 'noscript' ) );
 439                         if( $this->getContext()->getUser()->isLoggedIn() ){
 440                                 $out->addModuleStyles( 'user.groups' );
 441                         }
 442                 }
 443
 444                 // Per-user custom styles
 445                 if ( $wgAllowUserCss ) {
 446                         if ( $this->getTitle()->isCssSubpage() && $this->userCanPreview( $this->getContext()->getRequest()->getVal( 'action' ) ) ) {
 447                                 // @FIXME: properly escape the cdata!
 448                                 $out->addInlineStyle( $this->getContext()->getRequest()->getText( 'wpTextbox1' ) );
 449                         } else {
 450                                 $out->addModuleStyles( 'user' );
 451                         }
 452                 }
 453
 454                 // Per-user preference styles
 455                 if ( $wgAllowUserCssPrefs ) {
 456                         $out->addModuleStyles( 'user.options' );
 457                 }
 458
 459                 wfProfileOut( __METHOD__ );
 460         }
 461
 462         /**
 463          * Get the query to generate a dynamic stylesheet
 464          *
 465          * @return array
 466          */
 467         public static function getDynamicStylesheetQuery() {
 468                 global $wgSquidMaxage;
 469
 470                 return array(
 471                                 'action' => 'raw',
 472                                 'maxage' => $wgSquidMaxage,
 473                                 'usemsgcache' => 'yes',
 474                                 'ctype' => 'text/css',
 475                                 'smaxage' => $wgSquidMaxage,
 476                         );
 477         }
 478
 479         /**
 480          * Add skin specific stylesheets
 481          * @param $out OutputPage
 482          * @delete
 483          */
 484         abstract function setupSkinUserCss( OutputPage $out );
 485
 486         /**
 487          * TODO: document
 488          * @param $title Title
 489          * @return String
 490          */
 491         function getPageClasses( $title ) {
 492                 $numeric = 'ns-' . $title->getNamespace();
 493
 494                 if ( $title->getNamespace() == NS_SPECIAL ) {
 495                         $type = 'ns-special';
 496                         // bug 23315: provide a class based on the canonical special page name without subpages
 497                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 498                         if ( $canonicalName ) {
 499                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 500                         } else {
 501                                 $type .= ' mw-invalidspecialpage';
 502                         }
 503                 } elseif ( $title->isTalkPage() ) {
 504                         $type = 'ns-talk';
 505                 } else {
 506                         $type = 'ns-subject';
 507                 }
 508
 509                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 510
 511                 return "$numeric $type $name";
 512         }
 513
 514         /**
 515          * This will be called by OutputPage::headElement when it is creating the
 516          * <body> tag, skins can override it if they have a need to add in any
 517          * body attributes or classes of their own.
 518          */
 519         function addToBodyAttributes( $out, &$bodyAttrs ) {
 520                 // does nothing by default
 521         }
 522
 523         /**
 524          * URL to the logo
 525          */
 526         function getLogo() {
 527                 global $wgLogo;
 528                 return $wgLogo;
 529         }
 530
 531         /**
 532          * The format without an explicit $out argument is deprecated
 533          */
 534         function getCategoryLinks( OutputPage $out=null ) {
 535                 global $wgUseCategoryBrowser, $wgContLang;
 536
 537                 if( $out === null ){
 538                         $out = $this->getContext()->output;
 539                 }
 540
 541                 if ( count( $out->mCategoryLinks ) == 0 ) {
 542                         return '';
 543                 }
 544
 545                 # Separator
 546                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 547
 548                 // Use Unicode bidi embedding override characters,
 549                 // to make sure links don't smash each other up in ugly ways.
 550                 $dir = $wgContLang->getDir();
 551                 $embed = "<span dir='$dir'>";
 552                 $pop = '</span>';
 553
 554                 $allCats = $out->getCategoryLinks();
 555                 $s = '';
 556                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 557
 558                 if ( !empty( $allCats['normal'] ) ) {
 559                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 560
 561                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 562                         $s .= '<div id="mw-normal-catlinks">' .
 563                                 Linker::link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 564                                 . $colon . $t . '</div>';
 565                 }
 566
 567                 # Hidden categories
 568                 if ( isset( $allCats['hidden'] ) ) {
 569                         if ( $this->getContext()->getUser()->getBoolOption( 'showhiddencats' ) ) {
 570                                 $class = 'mw-hidden-cats-user-shown';
 571                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 572                                 $class = 'mw-hidden-cats-ns-shown';
 573                         } else {
 574                                 $class = 'mw-hidden-cats-hidden';
 575                         }
 576
 577                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 578                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 579                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 580                                 '</div>';
 581                 }
 582
 583                 # optional 'dmoz-like' category browser. Will be shown under the list
 584                 # of categories an article belong to
 585                 if ( $wgUseCategoryBrowser ) {
 586                         $s .= '<br /><hr />';
 587
 588                         # get a big array of the parents tree
 589                         $parenttree = $this->getTitle()->getParentCategoryTree();
 590                         # Skin object passed by reference cause it can not be
 591                         # accessed under the method subfunction drawCategoryBrowser
 592                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 593                         # Clean out bogus first entry and sort them
 594                         unset( $tempout[0] );
 595                         asort( $tempout );
 596                         # Output one per line
 597                         $s .= implode( "<br />\n", $tempout );
 598                 }
 599
 600                 return $s;
 601         }
 602
 603         /**
 604          * Render the array as a serie of links.
 605          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 606          * @return String separated by &gt;, terminate with "\n"
 607          */
 608         function drawCategoryBrowser( $tree ) {
 609                 $return = '';
 610
 611                 foreach ( $tree as $element => $parent ) {
 612                         if ( empty( $parent ) ) {
 613                                 # element start a new list
 614                                 $return .= "\n";
 615                         } else {
 616                                 # grab the others elements
 617                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 618                         }
 619
 620                         # add our current element to the list
 621                         $eltitle = Title::newFromText( $element );
 622                         $return .=  Linker::link( $eltitle, $eltitle->getText() );
 623                 }
 624
 625                 return $return;
 626         }
 627
 628         /**
 629          * The ->getCategories() form is deprecated, please instead use
 630          * the ->getCategories( $out ) form with whatout OutputPage is on hand
 631          */
 632         function getCategories( OutputPage $out=null ) {
 633
 634                 $catlinks = $this->getCategoryLinks( $out );
 635
 636                 $classes = 'catlinks';
 637
 638                 // Check what we're showing
 639                 $allCats = $out->getCategoryLinks();
 640                 $showHidden = $this->getContext()->getUser()->getBoolOption( 'showhiddencats' ) ||
 641                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 642
 643                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 644                         $classes .= ' catlinks-allhidden';
 645                 }
 646
 647                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 648         }
 649
 650         /**
 651          * This runs a hook to allow extensions placing their stuff after content
 652          * and article metadata (e.g. categories).
 653          * Note: This function has nothing to do with afterContent().
 654          *
 655          * This hook is placed here in order to allow using the same hook for all
 656          * skins, both the SkinTemplate based ones and the older ones, which directly
 657          * use this class to get their data.
 658          *
 659          * The output of this function gets processed in SkinTemplate::outputPage() for
 660          * the SkinTemplate based skins, all other skins should directly echo it.
 661          *
 662          * Returns an empty string by default, if not changed by any hook function.
 663          */
 664         protected function afterContentHook() {
 665                 $data = '';
 666
 667                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 668                         // adding just some spaces shouldn't toggle the output
 669                         // of the whole <div/>, so we use trim() here
 670                         if ( trim( $data ) != '' ) {
 671                                 // Doing this here instead of in the skins to
 672                                 // ensure that the div has the same ID in all
 673                                 // skins
 674                                 $data = "<div id='mw-data-after-content'>\n" .
 675                                         "\t$data\n" .
 676                                         "</div>\n";
 677                         }
 678                 } else {
 679                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 680                 }
 681
 682                 return $data;
 683         }
 684
 685         /**
 686          * Generate debug data HTML for displaying at the bottom of the main content
 687          * area.
 688          * @return String HTML containing debug data, if enabled (otherwise empty).
 689          */
 690         protected function generateDebugHTML( OutputPage $out ) {
 691                 global $wgShowDebug;
 692
 693                 if ( $wgShowDebug ) {
 694                         $listInternals = $this->formatDebugHTML( $out->mDebugtext );
 695                         return "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 696                                 $listInternals . "</ul>\n";
 697                 }
 698
 699                 return '';
 700         }
 701
 702         private function formatDebugHTML( $debugText ) {
 703                 global $wgDebugTimestamps;
 704
 705                 $lines = explode( "\n", $debugText );
 706                 $curIdent = 0;
 707                 $ret = '<li>';
 708
 709                 foreach ( $lines as $line ) {
 710                         $pre = '';
 711                         if ( $wgDebugTimestamps ) {
 712                                 $matches = array();
 713                                 if ( preg_match( '/^(\d+\.\d+\s{2})/', $line, $matches ) ) {
 714                                         $pre = $matches[1];
 715                                         $line = substr( $line, strlen( $pre ) );
 716                                 }
 717                         }
 718                         $display = ltrim( $line );
 719                         $ident = strlen( $line ) - strlen( $display );
 720                         $diff = $ident - $curIdent;
 721
 722                         $display = $pre . $display;
 723                         if ( $display == '' ) {
 724                                 $display = "\xc2\xa0";
 725                         }
 726
 727                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 728                                 $ident = $curIdent;
 729                                 $diff = 0;
 730                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 731                         } else {
 732                                 $display = htmlspecialchars( $display );
 733                         }
 734
 735                         if ( $diff < 0 ) {
 736                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 737                         } elseif ( $diff == 0 ) {
 738                                 $ret .= "</li><li>\n";
 739                         } else {
 740                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 741                         }
 742                         $ret .= "<tt>$display</tt>\n";
 743
 744                         $curIdent = $ident;
 745                 }
 746
 747                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 748
 749                 return $ret;
 750         }
 751
 752         /**
 753          * This gets called shortly before the </body> tag.
 754          * @param $out OutputPage object
 755          * @return String HTML-wrapped JS code to be put before </body>
 756          */
 757         function bottomScripts( $out ) {
 758                 // TODO and the suckage continues. This function is really just a wrapper around
 759                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 760                 // up at some point
 761                 $bottomScriptText = $out->getBottomScripts( $this );
 762                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 763
 764                 return $bottomScriptText;
 765         }
 766
 767         /** @return string Retrievied from HTML text */
 768         function printSource() {
 769                 $url = htmlspecialchars( $this->getTitle()->getFullURL() );
 770                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 771         }
 772
 773         function getUndeleteLink() {
 774                 $action = $this->getContext()->getRequest()->getVal( 'action', 'view' );
 775
 776                 if ( $this->getContext()->getUser()->isAllowed( 'deletedhistory' ) &&
 777                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 778                         $n = $this->getTitle()->isDeleted();
 779
 780                         if ( $n ) {
 781                                 if ( $this->getContext()->getUser()->isAllowed( 'undelete' ) ) {
 782                                         $msg = 'thisisdeleted';
 783                                 } else {
 784                                         $msg = 'viewdeleted';
 785                                 }
 786
 787                                 return wfMsg(
 788                                         $msg,
 789                                         Linker::link(
 790                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 791                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $this->getContext()->getLang()->formatNum( $n ) ),
 792                                                 array(),
 793                                                 array(),
 794                                                 array( 'known', 'noclasses' )
 795                                         )
 796                                 );
 797                         }
 798                 }
 799
 800                 return '';
 801         }
 802
 803         /**
 804          * The format without an explicit $out argument is deprecated
 805          */
 806         function subPageSubtitle( OutputPage $out=null ) {
 807                 $out = $this->getContext()->getOutput();
 808                 $subpages = '';
 809
 810                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 811                         return $subpages;
 812                 }
 813
 814                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 815                         $ptext = $this->getTitle()->getPrefixedText();
 816                         if ( preg_match( '/\//', $ptext ) ) {
 817                                 $links = explode( '/', $ptext );
 818                                 array_pop( $links );
 819                                 $c = 0;
 820                                 $growinglink = '';
 821                                 $display = '';
 822
 823                                 foreach ( $links as $link ) {
 824                                         $growinglink .= $link;
 825                                         $display .= $link;
 826                                         $linkObj = Title::newFromText( $growinglink );
 827
 828                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 829                                                 $getlink = $this->link(
 830                                                         $linkObj,
 831                                                         htmlspecialchars( $display ),
 832                                                         array(),
 833                                                         array(),
 834                                                         array( 'known', 'noclasses' )
 835                                                 );
 836
 837                                                 $c++;
 838
 839                                                 if ( $c > 1 ) {
 840                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
 841                                                 } else  {
 842                                                         $subpages .= '&lt; ';
 843                                                 }
 844
 845                                                 $subpages .= $getlink;
 846                                                 $display = '';
 847                                         } else {
 848                                                 $display .= '/';
 849                                         }
 850                                         $growinglink .= '/';
 851                                 }
 852                         }
 853                 }
 854
 855                 return $subpages;
 856         }
 857
 858         /**
 859          * Returns true if the IP should be shown in the header
 860          */
 861         function showIPinHeader() {
 862                 global $wgShowIPinHeader;
 863                 return $wgShowIPinHeader && session_id() != '';
 864         }
 865
 866         function getSearchLink() {
 867                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 868                 return $searchPage->getLocalURL();
 869         }
 870
 871         function escapeSearchLink() {
 872                 return htmlspecialchars( $this->getSearchLink() );
 873         }
 874
 875         function getCopyright( $type = 'detect' ) {
 876                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 877
 878                 if ( $type == 'detect' ) {
 879                         $diff = $this->getContext()->getRequest()->getVal( 'diff' );
 880
 881                         if ( is_null( $diff ) && !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 882                                 $type = 'history';
 883                         } else {
 884                                 $type = 'normal';
 885                         }
 886                 }
 887
 888                 if ( $type == 'history' ) {
 889                         $msg = 'history_copyright';
 890                 } else {
 891                         $msg = 'copyright';
 892                 }
 893
 894                 $out = '';
 895
 896                 if ( $wgRightsPage ) {
 897                         $title = Title::newFromText( $wgRightsPage );
 898                         $link = Linker::linkKnown( $title, $wgRightsText );
 899                 } elseif ( $wgRightsUrl ) {
 900                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 901                 } elseif ( $wgRightsText ) {
 902                         $link = $wgRightsText;
 903                 } else {
 904                         # Give up now
 905                         return $out;
 906                 }
 907
 908                 // Allow for site and per-namespace customization of copyright notice.
 909                 $forContent = true;
 910
 911                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 912
 913                 if ( $forContent ) {
 914                         $out .= wfMsgForContent( $msg, $link );
 915                 } else {
 916                         $out .= wfMsg( $msg, $link );
 917                 }
 918
 919                 return $out;
 920         }
 921
 922         function getCopyrightIcon() {
 923                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 924
 925                 $out = '';
 926
 927                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 928                         $out = $wgCopyrightIcon;
 929                 } elseif ( $wgRightsIcon ) {
 930                         $icon = htmlspecialchars( $wgRightsIcon );
 931
 932                         if ( $wgRightsUrl ) {
 933                                 $url = htmlspecialchars( $wgRightsUrl );
 934                                 $out .= '<a href="' . $url . '">';
 935                         }
 936
 937                         $text = htmlspecialchars( $wgRightsText );
 938                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 939
 940                         if ( $wgRightsUrl ) {
 941                                 $out .= '</a>';
 942                         }
 943                 }
 944
 945                 return $out;
 946         }
 947
 948         /**
 949          * Gets the powered by MediaWiki icon.
 950          * @return string
 951          */
 952         function getPoweredBy() {
 953                 global $wgStylePath;
 954
 955                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 956                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 957                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 958                 return $text;
 959         }
 960
 961         /**
 962          * Get the timestamp of the latest revision, formatted in user language
 963          *
 964          * @param $article Article object. Used if we're working with the current revision
 965          * @return String
 966          */
 967         protected function lastModified( $article ) {
 968                 if ( !$this->isRevisionCurrent() ) {
 969                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 970                 } else {
 971                         $timestamp = $article->getTimestamp();
 972                 }
 973
 974                 if ( $timestamp ) {
 975                         $d = $this->getContext()->getLang()->date( $timestamp, true );
 976                         $t = $this->getContext()->getLang()->time( $timestamp, true );
 977                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
 978                 } else {
 979                         $s = '';
 980                 }
 981
 982                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 983                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
 984                 }
 985
 986                 return $s;
 987         }
 988
 989         function logoText( $align = '' ) {
 990                 if ( $align != '' ) {
 991                         $a = " align='{$align}'";
 992                 } else {
 993                         $a = '';
 994                 }
 995
 996                 $mp = wfMsg( 'mainpage' );
 997                 $mptitle = Title::newMainPage();
 998                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
 999
1000                 $logourl = $this->getLogo();
1001                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1002
1003                 return $s;
1004         }
1005
1006         /**
1007          * Renders a $wgFooterIcons icon acording to the method's arguments
1008          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1009          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1010          */
1011         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1012                 if ( is_string( $icon ) ) {
1013                         $html = $icon;
1014                 } else { // Assuming array
1015                         $url = isset($icon["url"]) ? $icon["url"] : null;
1016                         unset( $icon["url"] );
1017                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1018                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1019                         } else {
1020                                 $html = htmlspecialchars( $icon["alt"] );
1021                         }
1022                         if ( $url ) {
1023                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1024                         }
1025                 }
1026                 return $html;
1027         }
1028
1029         /**
1030          * Gets the link to the wiki's main page.
1031          * @return string
1032          */
1033         function mainPageLink() {
1034                 $s = Linker::link(
1035                         Title::newMainPage(),
1036                         wfMsg( 'mainpage' ),
1037                         array(),
1038                         array(),
1039                         array( 'known', 'noclasses' )
1040                 );
1041
1042                 return $s;
1043         }
1044
1045         public function footerLink( $desc, $page ) {
1046                 // if the link description has been set to "-" in the default language,
1047                 if ( wfMsgForContent( $desc )  == '-' ) {
1048                         // then it is disabled, for all languages.
1049                         return '';
1050                 } else {
1051                         // Otherwise, we display the link for the user, described in their
1052                         // language (which may or may not be the same as the default language),
1053                         // but we make the link target be the one site-wide page.
1054                         $title = Title::newFromText( wfMsgForContent( $page ) );
1055
1056                         return Linker::linkKnown(
1057                                 $title,
1058                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1059                         );
1060                 }
1061         }
1062
1063         /**
1064          * Gets the link to the wiki's privacy policy page.
1065          */
1066         function privacyLink() {
1067                 return $this->footerLink( 'privacy', 'privacypage' );
1068         }
1069
1070         /**
1071          * Gets the link to the wiki's about page.
1072          */
1073         function aboutLink() {
1074                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1075         }
1076
1077         /**
1078          * Gets the link to the wiki's general disclaimers page.
1079          */
1080         function disclaimerLink() {
1081                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1082         }
1083
1084         /**
1085          * Return URL options for the 'edit page' link.
1086          * This may include an 'oldid' specifier, if the current page view is such.
1087          *
1088          * @return array
1089          * @private
1090          */
1091         function editUrlOptions() {
1092                 $options = array( 'action' => 'edit' );
1093
1094                 if ( !$this->isRevisionCurrent() ) {
1095                         $options['oldid'] = intval( $this->getRevisionId() );
1096                 }
1097
1098                 return $options;
1099         }
1100
1101         function showEmailUser( $id ) {
1102                 $targetUser = User::newFromId( $id );
1103                 return $this->getContext()->getUser()->canSendEmail() && # the sending user must have a confirmed email address
1104                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1105         }
1106
1107         /**
1108          * Return a fully resolved style path url to images or styles stored in the common folder.
1109          * This method returns a url resolved using the configured skin style path
1110          * and includes the style version inside of the url.
1111          * @param $name String: The name or path of a skin resource file
1112          * @return String The fully resolved style path url including styleversion
1113          */
1114         function getCommonStylePath( $name ) {
1115                 global $wgStylePath, $wgStyleVersion;
1116                 return "$wgStylePath/common/$name?$wgStyleVersion";
1117         }
1118
1119         /**
1120          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
1121          * This method returns a url resolved using the configured skin style path
1122          * and includes the style version inside of the url.
1123          * @param $name String: The name or path of a skin resource file
1124          * @return String The fully resolved style path url including styleversion
1125          */
1126         function getSkinStylePath( $name ) {
1127                 global $wgStylePath, $wgStyleVersion;
1128                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1129         }
1130
1131         /* these are used extensively in SkinTemplate, but also some other places */
1132         static function makeMainPageUrl( $urlaction = '' ) {
1133                 $title = Title::newMainPage();
1134                 self::checkTitle( $title, '' );
1135
1136                 return $title->getLocalURL( $urlaction );
1137         }
1138
1139         static function makeSpecialUrl( $name, $urlaction = '' ) {
1140                 $title = SpecialPage::getSafeTitleFor( $name );
1141                 return $title->getLocalURL( $urlaction );
1142         }
1143
1144         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1145                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1146                 return $title->getLocalURL( $urlaction );
1147         }
1148
1149         static function makeI18nUrl( $name, $urlaction = '' ) {
1150                 $title = Title::newFromText( wfMsgForContent( $name ) );
1151                 self::checkTitle( $title, $name );
1152                 return $title->getLocalURL( $urlaction );
1153         }
1154
1155         static function makeUrl( $name, $urlaction = '' ) {
1156                 $title = Title::newFromText( $name );
1157                 self::checkTitle( $title, $name );
1158
1159                 return $title->getLocalURL( $urlaction );
1160         }
1161
1162         /**
1163          * If url string starts with http, consider as external URL, else
1164          * internal
1165          */
1166         static function makeInternalOrExternalUrl( $name ) {
1167                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1168                         return $name;
1169                 } else {
1170                         return self::makeUrl( $name );
1171                 }
1172         }
1173
1174         # this can be passed the NS number as defined in Language.php
1175         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1176                 $title = Title::makeTitleSafe( $namespace, $name );
1177                 self::checkTitle( $title, $name );
1178
1179                 return $title->getLocalURL( $urlaction );
1180         }
1181
1182         /* these return an array with the 'href' and boolean 'exists' */
1183         static function makeUrlDetails( $name, $urlaction = '' ) {
1184                 $title = Title::newFromText( $name );
1185                 self::checkTitle( $title, $name );
1186
1187                 return array(
1188                         'href' => $title->getLocalURL( $urlaction ),
1189                         'exists' => $title->getArticleID() != 0,
1190                 );
1191         }
1192
1193         /**
1194          * Make URL details where the article exists (or at least it's convenient to think so)
1195          */
1196         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1197                 $title = Title::newFromText( $name );
1198                 self::checkTitle( $title, $name );
1199
1200                 return array(
1201                         'href' => $title->getLocalURL( $urlaction ),
1202                         'exists' => true
1203                 );
1204         }
1205
1206         # make sure we have some title to operate on
1207         static function checkTitle( &$title, $name ) {
1208                 if ( !is_object( $title ) ) {
1209                         $title = Title::newFromText( $name );
1210                         if ( !is_object( $title ) ) {
1211                                 $title = Title::newFromText( '--error: link target missing--' );
1212                         }
1213                 }
1214         }
1215
1216         /**
1217          * Build an array that represents the sidebar(s), the navigation bar among them
1218          *
1219          * @return array
1220          */
1221         function buildSidebar() {
1222                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1223                 wfProfileIn( __METHOD__ );
1224
1225                 $key = wfMemcKey( 'sidebar', $this->getContext()->getLang()->getCode() );
1226
1227                 if ( $wgEnableSidebarCache ) {
1228                         $cachedsidebar = $parserMemc->get( $key );
1229                         if ( $cachedsidebar ) {
1230                                 wfProfileOut( __METHOD__ );
1231                                 return $cachedsidebar;
1232                         }
1233                 }
1234
1235                 $bar = array();
1236                 $this->addToSidebar( $bar, 'sidebar' );
1237
1238                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1239                 if ( $wgEnableSidebarCache ) {
1240                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1241                 }
1242
1243                 wfProfileOut( __METHOD__ );
1244                 return $bar;
1245         }
1246         /**
1247          * Add content from a sidebar system message
1248          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1249          *
1250          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1251          *
1252          * @param &$bar array
1253          * @param $message String
1254          */
1255         function addToSidebar( &$bar, $message ) {
1256                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1257         }
1258
1259         /**
1260          * Add content from plain text
1261          * @since 1.17
1262          * @param &$bar array
1263          * @param $text string
1264          */
1265         function addToSidebarPlain( &$bar, $text ) {
1266                 $lines = explode( "\n", $text );
1267                 $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.
1268
1269                 $heading = '';
1270
1271                 foreach ( $lines as $line ) {
1272                         if ( strpos( $line, '*' ) !== 0 ) {
1273                                 continue;
1274                         }
1275
1276                         if ( strpos( $line, '**' ) !== 0 ) {
1277                                 $heading = trim( $line, '* ' );
1278                                 if ( !array_key_exists( $heading, $bar ) ) {
1279                                         $bar[$heading] = array();
1280                                 }
1281                         } else {
1282                                 $line = trim( $line, '* ' );
1283
1284                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1285                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1286                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1287                                         $link = wfMsgForContent( $line[0] );
1288
1289                                         if ( $link == '-' ) {
1290                                                 continue;
1291                                         }
1292
1293                                         $text = wfMsgExt( $line[1], 'parsemag' );
1294
1295                                         if ( wfEmptyMsg( $line[1] ) ) {
1296                                                 $text = $line[1];
1297                                         }
1298
1299                                         if ( wfEmptyMsg( $line[0] ) ) {
1300                                                 $link = $line[0];
1301                                         }
1302
1303                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1304                                                 $href = $link;
1305                                         } else {
1306                                                 $title = Title::newFromText( $link );
1307
1308                                                 if ( $title ) {
1309                                                         $title = $title->fixSpecialName();
1310                                                         $href = $title->getLocalURL();
1311                                                 } else {
1312                                                         $href = 'INVALID-TITLE';
1313                                                 }
1314                                         }
1315
1316                                         $bar[$heading][] = array(
1317                                                 'text' => $text,
1318                                                 'href' => $href,
1319                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
1320                                                 'active' => false
1321                                         );
1322                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
1323                                         global $wgParser;
1324
1325                                         $line = substr( $line, 2, strlen( $line ) - 4 );
1326
1327                                         $options = new ParserOptions();
1328                                         $options->setEditSection( false );
1329                                         $options->setInterfaceMessage( true );
1330                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $this->getTitle(), $options )->getText();
1331                                 } else {
1332                                         continue;
1333                                 }
1334                         }
1335                 }
1336
1337                 if ( count( $wikiBar ) > 0 ) {
1338                         $bar = array_merge( $bar, $wikiBar );
1339                 }
1340
1341                 return $bar;
1342         }
1343
1344         /**
1345          * Should we include common/wikiprintable.css?  Skins that have their own
1346          * print stylesheet should override this and return false.  (This is an
1347          * ugly hack to get Monobook to play nicely with
1348          * OutputPage::headElement().)
1349          *
1350          * @return bool
1351          */
1352         public function commonPrintStylesheet() {
1353                 return true;
1354         }
1355
1356         /**
1357          * Gets new talk page messages for the current user.
1358          * @return MediaWiki message or if no new talk page messages, nothing
1359          */
1360         function getNewtalks() {
1361                 $out = $this->getContext()->getOutput();
1362
1363                 $newtalks = $this->getContext()->getUser()->getNewMessageLinks();
1364                 $ntl = '';
1365
1366                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1367                         $userTitle = $this->getUser()->getUserPage();
1368                         $userTalkTitle = $userTitle->getTalkPage();
1369
1370                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1371                                 $newMessagesLink = $this->link(
1372                                         $userTalkTitle,
1373                                         wfMsgHtml( 'newmessageslink' ),
1374                                         array(),
1375                                         array( 'redirect' => 'no' ),
1376                                         array( 'known', 'noclasses' )
1377                                 );
1378
1379                                 $newMessagesDiffLink = $this->link(
1380                                         $userTalkTitle,
1381                                         wfMsgHtml( 'newmessagesdifflink' ),
1382                                         array(),
1383                                         array( 'diff' => 'cur' ),
1384                                         array( 'known', 'noclasses' )
1385                                 );
1386
1387                                 $ntl = wfMsg(
1388                                         'youhavenewmessages',
1389                                         $newMessagesLink,
1390                                         $newMessagesDiffLink
1391                                 );
1392                                 # Disable Squid cache
1393                                 $out->setSquidMaxage( 0 );
1394                         }
1395                 } elseif ( count( $newtalks ) ) {
1396                         // _>" " for BC <= 1.16
1397                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
1398                         $msgs = array();
1399
1400                         foreach ( $newtalks as $newtalk ) {
1401                                 $msgs[] = Xml::element(
1402                                         'a',
1403                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1404                                 );
1405                         }
1406                         $parts = implode( $sep, $msgs );
1407                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
1408                         $out->setSquidMaxage( 0 );
1409                 }
1410
1411                 return $ntl;
1412         }
1413
1414         /**
1415          * Get a cached notice
1416          *
1417          * @param $name String: message name, or 'default' for $wgSiteNotice
1418          * @return String: HTML fragment
1419          */
1420         private function getCachedNotice( $name ) {
1421                 global $wgRenderHashAppend, $parserMemc;
1422
1423                 wfProfileIn( __METHOD__ );
1424
1425                 $needParse = false;
1426
1427                 if( $name === 'default' ) {
1428                         // special case
1429                         global $wgSiteNotice;
1430                         $notice = $wgSiteNotice;
1431                         if( empty( $notice ) ) {
1432                                 wfProfileOut( __METHOD__ );
1433                                 return false;
1434                         }
1435                 } else {
1436                         $msg = wfMessage( $name )->inContentLanguage();
1437                         if( $msg->isDisabled() ) {
1438                                 wfProfileOut( __METHOD__ );
1439                                 return false;
1440                         }
1441                         $notice = $msg->plain();
1442                 }
1443
1444                 // Use the extra hash appender to let eg SSL variants separately cache.
1445                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1446                 $cachedNotice = $parserMemc->get( $key );
1447                 if( is_array( $cachedNotice ) ) {
1448                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1449                                 $notice = $cachedNotice['html'];
1450                         } else {
1451                                 $needParse = true;
1452                         }
1453                 } else {
1454                         $needParse = true;
1455                 }
1456
1457                 if ( $needParse ) {
1458                         $parsed = $this->getContext()->getOutput()->parse( $notice );
1459                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1460                         $notice = $parsed;
1461                 }
1462
1463                 $notice = '<div id="localNotice">' .$notice . '</div>';
1464                 wfProfileOut( __METHOD__ );
1465                 return $notice;
1466         }
1467
1468         /**
1469          * Get a notice based on page's namespace
1470          *
1471          * @return String: HTML fragment
1472          */
1473         function getNamespaceNotice() {
1474                 wfProfileIn( __METHOD__ );
1475
1476                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1477                 $namespaceNotice = $this->getCachedNotice( $key );
1478                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1479                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1480                 } else {
1481                         $namespaceNotice = '';
1482                 }
1483
1484                 wfProfileOut( __METHOD__ );
1485                 return $namespaceNotice;
1486         }
1487
1488         /**
1489          * Get the site notice
1490          *
1491          * @return String: HTML fragment
1492          */
1493         function getSiteNotice() {
1494                 wfProfileIn( __METHOD__ );
1495                 $siteNotice = '';
1496
1497                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1498                         if ( is_object( $this->getContext()->getUser() ) && $this->getContext()->getUser()->isLoggedIn() ) {
1499                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1500                         } else {
1501                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1502                                 if ( !$anonNotice ) {
1503                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1504                                 } else {
1505                                         $siteNotice = $anonNotice;
1506                                 }
1507                         }
1508                         if ( !$siteNotice ) {
1509                                 $siteNotice = $this->getCachedNotice( 'default' );
1510                         }
1511                 }
1512
1513                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1514                 wfProfileOut( __METHOD__ );
1515                 return $siteNotice;
1516         }
1517
1518         /**
1519          * Create a section edit link.  This supersedes editSectionLink() and
1520          * editSectionLinkForOther().
1521          *
1522          * @param $nt      Title  The title being linked to (may not be the same as
1523          *   $wgTitle, if the section is included from a template)
1524          * @param $section string The designation of the section being pointed to,
1525          *   to be included in the link, like "&section=$section"
1526          * @param $tooltip string The tooltip to use for the link: will be escaped
1527          *   and wrapped in the 'editsectionhint' message
1528          * @param $lang    string Language code
1529          * @return         string HTML to use for edit link
1530          */
1531         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1532                 // HTML generated here should probably have userlangattributes
1533                 // added to it for LTR text on RTL pages
1534                 $attribs = array();
1535                 if ( !is_null( $tooltip ) ) {
1536                         # Bug 25462: undo double-escaping.
1537                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1538                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1539                 }
1540                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1541                         $attribs,
1542                         array( 'action' => 'edit', 'section' => $section ),
1543                         array( 'noclasses', 'known' )
1544                 );
1545
1546                 # Run the old hook.  This takes up half of the function . . . hopefully
1547                 # we can rid of it someday.
1548                 $attribs = '';
1549                 if ( $tooltip ) {
1550                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1551                         $attribs = " title=\"$attribs\"";
1552                 }
1553                 $result = null;
1554                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1555                 if ( !is_null( $result ) ) {
1556                         # For reverse compatibility, add the brackets *after* the hook is
1557                         # run, and even add them to hook-provided text.  (This is the main
1558                         # reason that the EditSectionLink hook is deprecated in favor of
1559                         # DoEditSectionLink: it can't change the brackets or the span.)
1560                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1561                         return "<span class=\"editsection\">$result</span>";
1562                 }
1563
1564                 # Add the brackets and the span, and *then* run the nice new hook, with
1565                 # clean and non-redundant arguments.
1566                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1567                 $result = "<span class=\"editsection\">$result</span>";
1568
1569                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1570                 return $result;
1571         }
1572
1573         /**
1574          * Use PHP's magic __call handler to intercept legacy calls to the linker
1575          * for backwards compatibility.
1576          *
1577          * @param $fname String Name of called method
1578          * @param $args Array Arguments to the method
1579          */
1580         function __call( $fname, $args ) {
1581                 $realFunction = array( 'Linker', $fname );
1582                 if ( is_callable( $realFunction ) ) {
1583                         return call_user_func_array( $realFunction, $args );
1584                 } else {
1585                         $className = get_class( $this );
1586                         throw new MWException( "Call to undefined method $className::$fname" );
1587                 }
1588         }
1589
1590 }