includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 abstract class Skin extends ContextSource {
  19         protected $skinname = 'standard';
  20         protected $mRelevantTitle = null;
  21         protected $mRelevantUser = null;
  22
  23         /**
  24          * Fetch the set of available skins.
  25          * @return array of strings
  26          */
  27         static function getSkinNames() {
  28                 global $wgValidSkinNames;
  29                 static $skinsInitialised = false;
  30
  31                 if ( !$skinsInitialised || !count( $wgValidSkinNames ) ) {
  32                         # Get a list of available skins
  33                         # Build using the regular expression '^(.*).php$'
  34                         # Array keys are all lower case, array value keep the case used by filename
  35                         #
  36                         wfProfileIn( __METHOD__ . '-init' );
  37
  38                         global $wgStyleDirectory;
  39
  40                         $skinDir = dir( $wgStyleDirectory );
  41
  42                         # while code from www.php.net
  43                         while ( false !== ( $file = $skinDir->read() ) ) {
  44                                 // Skip non-PHP files, hidden files, and '.dep' includes
  45                                 $matches = array();
  46
  47                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  48                                         $aSkin = $matches[1];
  49                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  50                                 }
  51                         }
  52                         $skinDir->close();
  53                         $skinsInitialised = true;
  54                         wfProfileOut( __METHOD__ . '-init' );
  55                 }
  56                 return $wgValidSkinNames;
  57         }
  58
  59         /**
  60          * Fetch the list of usable skins in regards to $wgSkipSkins.
  61          * Useful for Special:Preferences and other places where you
  62          * only want to show skins users _can_ use.
  63          * @return array of strings
  64          */
  65         public static function getUsableSkins() {
  66                 global $wgSkipSkins;
  67
  68                 $usableSkins = self::getSkinNames();
  69
  70                 foreach ( $wgSkipSkins as $skip ) {
  71                         unset( $usableSkins[$skip] );
  72                 }
  73
  74                 return $usableSkins;
  75         }
  76
  77         /**
  78          * Normalize a skin preference value to a form that can be loaded.
  79          * If a skin can't be found, it will fall back to the configured
  80          * default (or the old 'Classic' skin if that's broken).
  81          * @param $key String: 'monobook', 'standard', etc.
  82          * @return string
  83          */
  84         static function normalizeKey( $key ) {
  85                 global $wgDefaultSkin;
  86
  87                 $skinNames = Skin::getSkinNames();
  88
  89                 if ( $key == '' ) {
  90                         // Don't return the default immediately;
  91                         // in a misconfiguration we need to fall back.
  92                         $key = $wgDefaultSkin;
  93                 }
  94
  95                 if ( isset( $skinNames[$key] ) ) {
  96                         return $key;
  97                 }
  98
  99                 // Older versions of the software used a numeric setting
 100                 // in the user preferences.
 101                 $fallback = array(
 102                         0 => $wgDefaultSkin,
 103                         1 => 'nostalgia',
 104                         2 => 'cologneblue'
 105                 );
 106
 107                 if ( isset( $fallback[$key] ) ) {
 108                         $key = $fallback[$key];
 109                 }
 110
 111                 if ( isset( $skinNames[$key] ) ) {
 112                         return $key;
 113                 } elseif ( isset( $skinNames[$wgDefaultSkin] ) ) {
 114                         return $wgDefaultSkin;
 115                 } else {
 116                         return 'vector';
 117                 }
 118         }
 119
 120         /**
 121          * Factory method for loading a skin of a given type
 122          * @param $key String: 'monobook', 'standard', etc.
 123          * @return Skin
 124          */
 125         static function &newFromKey( $key ) {
 126                 global $wgStyleDirectory;
 127
 128                 $key = Skin::normalizeKey( $key );
 129
 130                 $skinNames = Skin::getSkinNames();
 131                 $skinName = $skinNames[$key];
 132                 $className = "Skin{$skinName}";
 133
 134                 # Grab the skin class and initialise it.
 135                 if ( !MWInit::classExists( $className ) ) {
 136
 137                         if ( !defined( 'MW_COMPILED' ) ) {
 138                                 // Preload base classes to work around APC/PHP5 bug
 139                                 $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 140                                 if ( file_exists( $deps ) ) {
 141                                         include_once( $deps );
 142                                 }
 143                                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 144                         }
 145
 146                         # Check if we got if not failback to default skin
 147                         if ( !MWInit::classExists( $className ) ) {
 148                                 # DO NOT die if the class isn't found. This breaks maintenance
 149                                 # scripts and can cause a user account to be unrecoverable
 150                                 # except by SQL manipulation if a previously valid skin name
 151                                 # is no longer valid.
 152                                 wfDebug( "Skin class does not exist: $className\n" );
 153                                 $className = 'SkinVector';
 154                                 if ( !defined( 'MW_COMPILED' ) ) {
 155                                         require_once( "{$wgStyleDirectory}/Vector.php" );
 156                                 }
 157                         }
 158                 }
 159                 $skin = new $className( $key );
 160                 return $skin;
 161         }
 162
 163         /** @return string skin name */
 164         public function getSkinName() {
 165                 return $this->skinname;
 166         }
 167
 168         /**
 169          * @param $out OutputPage
 170          */
 171         function initPage( OutputPage $out ) {
 172                 wfProfileIn( __METHOD__ );
 173
 174                 $this->preloadExistence();
 175
 176                 wfProfileOut( __METHOD__ );
 177         }
 178
 179         /**
 180          * Preload the existence of three commonly-requested pages in a single query
 181          */
 182         function preloadExistence() {
 183                 $user = $this->getUser();
 184
 185                 // User/talk link
 186                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 187
 188                 // Other tab link
 189                 if ( $this->getTitle()->isSpecialPage() ) {
 190                         // nothing
 191                 } elseif ( $this->getTitle()->isTalkPage() ) {
 192                         $titles[] = $this->getTitle()->getSubjectPage();
 193                 } else {
 194                         $titles[] = $this->getTitle()->getTalkPage();
 195                 }
 196
 197                 $lb = new LinkBatch( $titles );
 198                 $lb->setCaller( __METHOD__ );
 199                 $lb->execute();
 200         }
 201
 202         /**
 203          * Get the current revision ID
 204          *
 205          * @return Integer
 206          */
 207         public function getRevisionId() {
 208                 return $this->getOutput()->getRevisionId();
 209         }
 210
 211         /**
 212          * Whether the revision displayed is the latest revision of the page
 213          *
 214          * @return Boolean
 215          */
 216         public function isRevisionCurrent() {
 217                 $revID = $this->getRevisionId();
 218                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 219         }
 220
 221         /**
 222          * Set the "relevant" title
 223          * @see self::getRelevantTitle()
 224          * @param $t Title object to use
 225          */
 226         public function setRelevantTitle( $t ) {
 227                 $this->mRelevantTitle = $t;
 228         }
 229
 230         /**
 231          * Return the "relevant" title.
 232          * A "relevant" title is not necessarily the actual title of the page.
 233          * Special pages like Special:MovePage use set the page they are acting on
 234          * as their "relevant" title, this allows the skin system to display things
 235          * such as content tabs which belong to to that page instead of displaying
 236          * a basic special page tab which has almost no meaning.
 237          *
 238          * @return Title
 239          */
 240         public function getRelevantTitle() {
 241                 if ( isset($this->mRelevantTitle) ) {
 242                         return $this->mRelevantTitle;
 243                 }
 244                 return $this->getTitle();
 245         }
 246
 247         /**
 248          * Set the "relevant" user
 249          * @see self::getRelevantUser()
 250          * @param $u User object to use
 251          */
 252         public function setRelevantUser( $u ) {
 253                 $this->mRelevantUser = $u;
 254         }
 255
 256         /**
 257          * Return the "relevant" user.
 258          * A "relevant" user is similar to a relevant title. Special pages like
 259          * Special:Contributions mark the user which they are relevant to so that
 260          * things like the toolbox can display the information they usually are only
 261          * able to display on a user's userpage and talkpage.
 262          * @return User
 263          */
 264         public function getRelevantUser() {
 265                 if ( isset($this->mRelevantUser) ) {
 266                         return $this->mRelevantUser;
 267                 }
 268                 $title = $this->getRelevantTitle();
 269                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 270                         $rootUser = strtok( $title->getText(), '/' );
 271                         if ( User::isIP( $rootUser ) ) {
 272                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 273                         } else {
 274                                 $user = User::newFromName( $rootUser, false );
 275                                 if ( $user && $user->isLoggedIn() ) {
 276                                         $this->mRelevantUser = $user;
 277                                 }
 278                         }
 279                         return $this->mRelevantUser;
 280                 }
 281                 return null;
 282         }
 283
 284         /**
 285          * Outputs the HTML generated by other functions.
 286          * @param $out OutputPage
 287          */
 288         abstract function outputPage( OutputPage $out = null );
 289
 290         /**
 291          * @param $data array
 292          * @return string
 293          */
 294         static function makeVariablesScript( $data ) {
 295                 if ( $data ) {
 296                         return Html::inlineScript(
 297                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 298                         );
 299                 } else {
 300                         return '';
 301                 }
 302         }
 303
 304         /**
 305          * Make a <script> tag containing global variables
 306          *
 307          * @deprecated in 1.19
 308          * @param $unused Unused
 309          * @return string HTML fragment
 310          */
 311         public static function makeGlobalVariablesScript( $unused ) {
 312                 global $wgOut;
 313
 314                 wfDeprecated( __METHOD__, '1.19' );
 315
 316                 return self::makeVariablesScript( $wgOut->getJSVars() );
 317         }
 318
 319         /**
 320          * Get the query to generate a dynamic stylesheet
 321          *
 322          * @return array
 323          */
 324         public static function getDynamicStylesheetQuery() {
 325                 global $wgSquidMaxage;
 326
 327                 return array(
 328                                 'action' => 'raw',
 329                                 'maxage' => $wgSquidMaxage,
 330                                 'usemsgcache' => 'yes',
 331                                 'ctype' => 'text/css',
 332                                 'smaxage' => $wgSquidMaxage,
 333                         );
 334         }
 335
 336         /**
 337          * Add skin specific stylesheets
 338          * Calling this method with an $out of anything but the same OutputPage
 339          * inside ->getOutput() is deprecated. The $out arg is kept
 340          * for compatibility purposes with skins.
 341          * @param $out OutputPage
 342          * @delete
 343          */
 344         abstract function setupSkinUserCss( OutputPage $out );
 345
 346         /**
 347          * TODO: document
 348          * @param $title Title
 349          * @return String
 350          */
 351         function getPageClasses( $title ) {
 352                 $numeric = 'ns-' . $title->getNamespace();
 353
 354                 if ( $title->isSpecialPage() ) {
 355                         $type = 'ns-special';
 356                         // bug 23315: provide a class based on the canonical special page name without subpages
 357                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 358                         if ( $canonicalName ) {
 359                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 360                         } else {
 361                                 $type .= ' mw-invalidspecialpage';
 362                         }
 363                 } elseif ( $title->isTalkPage() ) {
 364                         $type = 'ns-talk';
 365                 } else {
 366                         $type = 'ns-subject';
 367                 }
 368
 369                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 370
 371                 return "$numeric $type $name";
 372         }
 373
 374         /**
 375          * This will be called by OutputPage::headElement when it is creating the
 376          * <body> tag, skins can override it if they have a need to add in any
 377          * body attributes or classes of their own.
 378          * @param $out OutputPage
 379          * @param $bodyAttrs Array
 380          */
 381         function addToBodyAttributes( $out, &$bodyAttrs ) {
 382                 // does nothing by default
 383         }
 384
 385         /**
 386          * URL to the logo
 387          * @return String
 388          */
 389         function getLogo() {
 390                 global $wgLogo;
 391                 return $wgLogo;
 392         }
 393
 394         /**
 395          * @return string
 396          */
 397         function getCategoryLinks() {
 398                 global $wgUseCategoryBrowser;
 399
 400                 $out = $this->getOutput();
 401                 $allCats = $out->getCategoryLinks();
 402
 403                 if ( !count( $allCats ) ) {
 404                         return '';
 405                 }
 406
 407                 $embed = "<li>";
 408                 $pop = "</li>";
 409
 410                 $s = '';
 411                 $colon = $this->msg( 'colon-separator' )->escaped();
 412
 413                 if ( !empty( $allCats['normal'] ) ) {
 414                         $t = $embed . implode( "{$pop}{$embed}" , $allCats['normal'] ) . $pop;
 415
 416                         $msg = $this->msg( 'pagecategories', count( $allCats['normal'] ) )->escaped();
 417                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 418                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 419                                 Linker::link( Title::newFromText( $linkPage ), $msg )
 420                                 . $colon . '<ul>' . $t . '</ul>' . '</div>';
 421                 }
 422
 423                 # Hidden categories
 424                 if ( isset( $allCats['hidden'] ) ) {
 425                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 426                                 $class = ' mw-hidden-cats-user-shown';
 427                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 428                                 $class = ' mw-hidden-cats-ns-shown';
 429                         } else {
 430                                 $class = ' mw-hidden-cats-hidden';
 431                         }
 432
 433                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 434                                 $this->msg( 'hidden-categories', count( $allCats['hidden'] ) )->escaped() .
 435                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}" , $allCats['hidden'] ) . $pop . '</ul>' .
 436                                 '</div>';
 437                 }
 438
 439                 # optional 'dmoz-like' category browser. Will be shown under the list
 440                 # of categories an article belong to
 441                 if ( $wgUseCategoryBrowser ) {
 442                         $s .= '<br /><hr />';
 443
 444                         # get a big array of the parents tree
 445                         $parenttree = $this->getTitle()->getParentCategoryTree();
 446                         # Skin object passed by reference cause it can not be
 447                         # accessed under the method subfunction drawCategoryBrowser
 448                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 449                         # Clean out bogus first entry and sort them
 450                         unset( $tempout[0] );
 451                         asort( $tempout );
 452                         # Output one per line
 453                         $s .= implode( "<br />\n", $tempout );
 454                 }
 455
 456                 return $s;
 457         }
 458
 459         /**
 460          * Render the array as a serie of links.
 461          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 462          * @return String separated by &gt;, terminate with "\n"
 463          */
 464         function drawCategoryBrowser( $tree ) {
 465                 $return = '';
 466
 467                 foreach ( $tree as $element => $parent ) {
 468                         if ( empty( $parent ) ) {
 469                                 # element start a new list
 470                                 $return .= "\n";
 471                         } else {
 472                                 # grab the others elements
 473                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 474                         }
 475
 476                         # add our current element to the list
 477                         $eltitle = Title::newFromText( $element );
 478                         $return .=  Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 479                 }
 480
 481                 return $return;
 482         }
 483
 484         /**
 485          * @return string
 486          */
 487         function getCategories() {
 488                 $out = $this->getOutput();
 489
 490                 $catlinks = $this->getCategoryLinks();
 491
 492                 $classes = 'catlinks';
 493
 494                 // Check what we're showing
 495                 $allCats = $out->getCategoryLinks();
 496                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 497                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 498
 499                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 500                         $classes .= ' catlinks-allhidden';
 501                 }
 502
 503                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 504         }
 505
 506         /**
 507          * This runs a hook to allow extensions placing their stuff after content
 508          * and article metadata (e.g. categories).
 509          * Note: This function has nothing to do with afterContent().
 510          *
 511          * This hook is placed here in order to allow using the same hook for all
 512          * skins, both the SkinTemplate based ones and the older ones, which directly
 513          * use this class to get their data.
 514          *
 515          * The output of this function gets processed in SkinTemplate::outputPage() for
 516          * the SkinTemplate based skins, all other skins should directly echo it.
 517          *
 518          * @return String, empty by default, if not changed by any hook function.
 519          */
 520         protected function afterContentHook() {
 521                 $data = '';
 522
 523                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 524                         // adding just some spaces shouldn't toggle the output
 525                         // of the whole <div/>, so we use trim() here
 526                         if ( trim( $data ) != '' ) {
 527                                 // Doing this here instead of in the skins to
 528                                 // ensure that the div has the same ID in all
 529                                 // skins
 530                                 $data = "<div id='mw-data-after-content'>\n" .
 531                                         "\t$data\n" .
 532                                         "</div>\n";
 533                         }
 534                 } else {
 535                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 536                 }
 537
 538                 return $data;
 539         }
 540
 541         /**
 542          * Generate debug data HTML for displaying at the bottom of the main content
 543          * area.
 544          * @return String HTML containing debug data, if enabled (otherwise empty).
 545          */
 546         protected function generateDebugHTML() {
 547                 global $wgShowDebug;
 548
 549                 $html = MWDebug::getDebugHTML( $this->getContext() );
 550
 551                 if ( $wgShowDebug ) {
 552                         $listInternals = $this->formatDebugHTML( $this->getOutput()->mDebugtext );
 553                         $html .= "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 554                                 $listInternals . "</ul>\n";
 555                 }
 556
 557                 return $html;
 558         }
 559
 560         /**
 561          * @param $debugText string
 562          * @return string
 563          */
 564         private function formatDebugHTML( $debugText ) {
 565                 global $wgDebugTimestamps;
 566
 567                 $lines = explode( "\n", $debugText );
 568                 $curIdent = 0;
 569                 $ret = '<li>';
 570
 571                 foreach ( $lines as $line ) {
 572                         $pre = '';
 573                         if ( $wgDebugTimestamps ) {
 574                                 $matches = array();
 575                                 if ( preg_match( '/^(\d+\.\d+ {1,3}\d+.\dM\s{2})/', $line, $matches ) ) {
 576                                         $pre = $matches[1];
 577                                         $line = substr( $line, strlen( $pre ) );
 578                                 }
 579                         }
 580                         $display = ltrim( $line );
 581                         $ident = strlen( $line ) - strlen( $display );
 582                         $diff = $ident - $curIdent;
 583
 584                         $display = $pre . $display;
 585                         if ( $display == '' ) {
 586                                 $display = "\xc2\xa0";
 587                         }
 588
 589                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 590                                 $ident = $curIdent;
 591                                 $diff = 0;
 592                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 593                         } else {
 594                                 $display = htmlspecialchars( $display );
 595                         }
 596
 597                         if ( $diff < 0 ) {
 598                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 599                         } elseif ( $diff == 0 ) {
 600                                 $ret .= "</li><li>\n";
 601                         } else {
 602                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 603                         }
 604                         $ret .= "<tt>$display</tt>\n";
 605
 606                         $curIdent = $ident;
 607                 }
 608
 609                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 610
 611                 return $ret;
 612         }
 613
 614         /**
 615          * This gets called shortly before the </body> tag.
 616          *
 617          * @return String HTML-wrapped JS code to be put before </body>
 618          */
 619         function bottomScripts() {
 620                 // TODO and the suckage continues. This function is really just a wrapper around
 621                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 622                 // up at some point
 623                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 624                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 625
 626                 return $bottomScriptText;
 627         }
 628
 629         /**
 630          * Text with the permalink to the source page,
 631          * usually shown on the footer of a printed page
 632          *
 633          * @return string HTML text with an URL
 634          */
 635         function printSource() {
 636                 $oldid = $this->getRevisionId();
 637                 if ( $oldid ) {
 638                         $url = htmlspecialchars( $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid ) );
 639                 } else {
 640                         // oldid not available for non existing pages
 641                         $url = htmlspecialchars( $this->getTitle()->getCanonicalURL() );
 642                 }
 643                 return $this->msg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' )->text();
 644         }
 645
 646         /**
 647          * @return String
 648          */
 649         function getUndeleteLink() {
 650                 $action = $this->getRequest()->getVal( 'action', 'view' );
 651
 652                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) &&
 653                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 654                         $n = $this->getTitle()->isDeleted();
 655
 656
 657                         if ( $n ) {
 658                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 659                                         $msg = 'thisisdeleted';
 660                                 } else {
 661                                         $msg = 'viewdeleted';
 662                                 }
 663
 664                                 return $this->msg( $msg )->rawParams(
 665                                         Linker::linkKnown(
 666                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 667                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 668                                         )->text();
 669                         }
 670                 }
 671
 672                 return '';
 673         }
 674
 675         /**
 676          * @return string
 677          */
 678         function subPageSubtitle() {
 679                 $out = $this->getOutput();
 680                 $subpages = '';
 681
 682                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 683                         return $subpages;
 684                 }
 685
 686                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 687                         $ptext = $this->getTitle()->getPrefixedText();
 688                         if ( preg_match( '/\//', $ptext ) ) {
 689                                 $links = explode( '/', $ptext );
 690                                 array_pop( $links );
 691                                 $c = 0;
 692                                 $growinglink = '';
 693                                 $display = '';
 694
 695                                 foreach ( $links as $link ) {
 696                                         $growinglink .= $link;
 697                                         $display .= $link;
 698                                         $linkObj = Title::newFromText( $growinglink );
 699
 700                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 701                                                 $getlink = Linker::linkKnown(
 702                                                         $linkObj,
 703                                                         htmlspecialchars( $display )
 704                                                 );
 705
 706                                                 $c++;
 707
 708                                                 if ( $c > 1 ) {
 709                                                         $subpages .= $this->msg( 'pipe-separator' )->escaped();
 710                                                 } else  {
 711                                                         $subpages .= '&lt; ';
 712                                                 }
 713
 714                                                 $subpages .= $getlink;
 715                                                 $display = '';
 716                                         } else {
 717                                                 $display .= '/';
 718                                         }
 719                                         $growinglink .= '/';
 720                                 }
 721                         }
 722                 }
 723
 724                 return $subpages;
 725         }
 726
 727         /**
 728          * Returns true if the IP should be shown in the header
 729          * @return Bool
 730          */
 731         function showIPinHeader() {
 732                 global $wgShowIPinHeader;
 733                 return $wgShowIPinHeader && session_id() != '';
 734         }
 735
 736         /**
 737          * @return String
 738          */
 739         function getSearchLink() {
 740                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 741                 return $searchPage->getLocalURL();
 742         }
 743
 744         /**
 745          * @return string
 746          */
 747         function escapeSearchLink() {
 748                 return htmlspecialchars( $this->getSearchLink() );
 749         }
 750
 751         /**
 752          * @param $type string
 753          * @return string
 754          */
 755         function getCopyright( $type = 'detect' ) {
 756                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgContLang;
 757
 758                 if ( $type == 'detect' ) {
 759                         if ( !$this->isRevisionCurrent() && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled() ) {
 760                                 $type = 'history';
 761                         } else {
 762                                 $type = 'normal';
 763                         }
 764                 }
 765
 766                 if ( $type == 'history' ) {
 767                         $msg = 'history_copyright';
 768                 } else {
 769                         $msg = 'copyright';
 770                 }
 771
 772                 if ( $wgRightsPage ) {
 773                         $title = Title::newFromText( $wgRightsPage );
 774                         $link = Linker::linkKnown( $title, $wgRightsText );
 775                 } elseif ( $wgRightsUrl ) {
 776                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 777                 } elseif ( $wgRightsText ) {
 778                         $link = $wgRightsText;
 779                 } else {
 780                         # Give up now
 781                         return '';
 782                 }
 783
 784                 // Allow for site and per-namespace customization of copyright notice.
 785                 $forContent = true;
 786
 787                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 788
 789                 $msgObj = $this->msg( $msg )->rawParams( $link );
 790                 if ( $forContent ) {
 791                         $msg = $msgObj->inContentLanguage()->text();
 792                         if ( $this->getLanguage()->getCode() !== $wgContLang->getCode() ) {
 793                                 $msg = Html::rawElement( 'span', array( 'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $msg );
 794                         }
 795                         return $msg;
 796                 } else {
 797                         return $msgObj->text();
 798                 }
 799         }
 800
 801         /**
 802          * @return null|string
 803          */
 804         function getCopyrightIcon() {
 805                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 806
 807                 $out = '';
 808
 809                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 810                         $out = $wgCopyrightIcon;
 811                 } elseif ( $wgRightsIcon ) {
 812                         $icon = htmlspecialchars( $wgRightsIcon );
 813
 814                         if ( $wgRightsUrl ) {
 815                                 $url = htmlspecialchars( $wgRightsUrl );
 816                                 $out .= '<a href="' . $url . '">';
 817                         }
 818
 819                         $text = htmlspecialchars( $wgRightsText );
 820                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 821
 822                         if ( $wgRightsUrl ) {
 823                                 $out .= '</a>';
 824                         }
 825                 }
 826
 827                 return $out;
 828         }
 829
 830         /**
 831          * Gets the powered by MediaWiki icon.
 832          * @return string
 833          */
 834         function getPoweredBy() {
 835                 global $wgStylePath;
 836
 837                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 838                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 839                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 840                 return $text;
 841         }
 842
 843         /**
 844          * Get the timestamp of the latest revision, formatted in user language
 845          *
 846          * @return String
 847          */
 848         protected function lastModified() {
 849                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 850
 851                 # No cached timestamp, load it from the database
 852                 if ( $timestamp === null ) {
 853                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 854                 }
 855
 856                 if ( $timestamp ) {
 857                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 858                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 859                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->text();
 860                 } else {
 861                         $s = '';
 862                 }
 863
 864                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 865                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->text() . '</strong>';
 866                 }
 867
 868                 return $s;
 869         }
 870
 871         /**
 872          * @param $align string
 873          * @return string
 874          */
 875         function logoText( $align = '' ) {
 876                 if ( $align != '' ) {
 877                         $a = " align='{$align}'";
 878                 } else {
 879                         $a = '';
 880                 }
 881
 882                 $mp = $this->msg( 'mainpage' )->escaped();
 883                 $mptitle = Title::newMainPage();
 884                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 885
 886                 $logourl = $this->getLogo();
 887                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 888
 889                 return $s;
 890         }
 891
 892         /**
 893          * Renders a $wgFooterIcons icon acording to the method's arguments
 894          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
 895          * @param $withImage Bool|String: Whether to use the icon's image or output a text-only footericon
 896          * @return String HTML
 897          */
 898         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 899                 if ( is_string( $icon ) ) {
 900                         $html = $icon;
 901                 } else { // Assuming array
 902                         $url = isset($icon["url"]) ? $icon["url"] : null;
 903                         unset( $icon["url"] );
 904                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 905                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
 906                         } else {
 907                                 $html = htmlspecialchars( $icon["alt"] );
 908                         }
 909                         if ( $url ) {
 910                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
 911                         }
 912                 }
 913                 return $html;
 914         }
 915
 916         /**
 917          * Gets the link to the wiki's main page.
 918          * @return string
 919          */
 920         function mainPageLink() {
 921                 $s = Linker::linkKnown(
 922                         Title::newMainPage(),
 923                         $this->msg( 'mainpage' )->escaped()
 924                 );
 925
 926                 return $s;
 927         }
 928
 929         /**
 930          * @param $desc
 931          * @param $page
 932          * @return string
 933          */
 934         public function footerLink( $desc, $page ) {
 935                 // if the link description has been set to "-" in the default language,
 936                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
 937                         // then it is disabled, for all languages.
 938                         return '';
 939                 } else {
 940                         // Otherwise, we display the link for the user, described in their
 941                         // language (which may or may not be the same as the default language),
 942                         // but we make the link target be the one site-wide page.
 943                         $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
 944
 945                         return Linker::linkKnown(
 946                                 $title,
 947                                 $this->msg( $desc )->escaped()
 948                         );
 949                 }
 950         }
 951
 952         /**
 953          * Gets the link to the wiki's privacy policy page.
 954          * @return String HTML
 955          */
 956         function privacyLink() {
 957                 return $this->footerLink( 'privacy', 'privacypage' );
 958         }
 959
 960         /**
 961          * Gets the link to the wiki's about page.
 962          * @return String HTML
 963          */
 964         function aboutLink() {
 965                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 966         }
 967
 968         /**
 969          * Gets the link to the wiki's general disclaimers page.
 970          * @return String HTML
 971          */
 972         function disclaimerLink() {
 973                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
 974         }
 975
 976         /**
 977          * Return URL options for the 'edit page' link.
 978          * This may include an 'oldid' specifier, if the current page view is such.
 979          *
 980          * @return array
 981          * @private
 982          */
 983         function editUrlOptions() {
 984                 $options = array( 'action' => 'edit' );
 985
 986                 if ( !$this->isRevisionCurrent() ) {
 987                         $options['oldid'] = intval( $this->getRevisionId() );
 988                 }
 989
 990                 return $options;
 991         }
 992
 993         /**
 994          * @param $id User|int
 995          * @return bool
 996          */
 997         function showEmailUser( $id ) {
 998                 if ( $id instanceof User ) {
 999                         $targetUser = $id;
1000                 } else {
1001                         $targetUser = User::newFromId( $id );
1002                 }
1003                 return $this->getUser()->canSendEmail() && # the sending user must have a confirmed email address
1004                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1005         }
1006
1007         /**
1008          * Return a fully resolved style path url to images or styles stored in the common folder.
1009          * This method returns a url resolved using the configured skin style path
1010          * and includes the style version inside of the url.
1011          * @param $name String: The name or path of a skin resource file
1012          * @return String The fully resolved style path url including styleversion
1013          */
1014         function getCommonStylePath( $name ) {
1015                 global $wgStylePath, $wgStyleVersion;
1016                 return "$wgStylePath/common/$name?$wgStyleVersion";
1017         }
1018
1019         /**
1020          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
1021          * This method returns a url resolved using the configured skin style path
1022          * and includes the style version inside of the url.
1023          * @param $name String: The name or path of a skin resource file
1024          * @return String The fully resolved style path url including styleversion
1025          */
1026         function getSkinStylePath( $name ) {
1027                 global $wgStylePath, $wgStyleVersion;
1028                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1029         }
1030
1031         /* these are used extensively in SkinTemplate, but also some other places */
1032
1033         /**
1034          * @param $urlaction string
1035          * @return String
1036          */
1037         static function makeMainPageUrl( $urlaction = '' ) {
1038                 $title = Title::newMainPage();
1039                 self::checkTitle( $title, '' );
1040
1041                 return $title->getLocalURL( $urlaction );
1042         }
1043
1044         /**
1045          * @param $name string
1046          * @param $urlaction string
1047          * @return String
1048          */
1049         static function makeSpecialUrl( $name, $urlaction = '' ) {
1050                 $title = SpecialPage::getSafeTitleFor( $name );
1051                 return $title->getLocalURL( $urlaction );
1052         }
1053
1054         /**
1055          * @param $name string
1056          * @param $subpage string
1057          * @param $urlaction string
1058          * @return String
1059          */
1060         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1061                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1062                 return $title->getLocalURL( $urlaction );
1063         }
1064
1065         /**
1066          * @param $name string
1067          * @param $urlaction string
1068          * @return String
1069          */
1070         static function makeI18nUrl( $name, $urlaction = '' ) {
1071                 $title = Title::newFromText( wfMsgForContent( $name ) );
1072                 self::checkTitle( $title, $name );
1073                 return $title->getLocalURL( $urlaction );
1074         }
1075
1076         /**
1077          * @param $name string
1078          * @param $urlaction string
1079          * @return String
1080          */
1081         static function makeUrl( $name, $urlaction = '' ) {
1082                 $title = Title::newFromText( $name );
1083                 self::checkTitle( $title, $name );
1084
1085                 return $title->getLocalURL( $urlaction );
1086         }
1087
1088         /**
1089          * If url string starts with http, consider as external URL, else
1090          * internal
1091          * @param $name String
1092          * @return String URL
1093          */
1094         static function makeInternalOrExternalUrl( $name ) {
1095                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1096                         return $name;
1097                 } else {
1098                         return self::makeUrl( $name );
1099                 }
1100         }
1101
1102         /**
1103          * this can be passed the NS number as defined in Language.php
1104          * @param $name
1105          * @param $urlaction string
1106          * @param $namespace int
1107          * @return String
1108          */
1109         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1110                 $title = Title::makeTitleSafe( $namespace, $name );
1111                 self::checkTitle( $title, $name );
1112
1113                 return $title->getLocalURL( $urlaction );
1114         }
1115
1116         /**
1117          * these return an array with the 'href' and boolean 'exists'
1118          * @param $name
1119          * @param $urlaction string
1120          * @return array
1121          */
1122         static function makeUrlDetails( $name, $urlaction = '' ) {
1123                 $title = Title::newFromText( $name );
1124                 self::checkTitle( $title, $name );
1125
1126                 return array(
1127                         'href' => $title->getLocalURL( $urlaction ),
1128                         'exists' => $title->getArticleID() != 0,
1129                 );
1130         }
1131
1132         /**
1133          * Make URL details where the article exists (or at least it's convenient to think so)
1134          * @param $name String Article name
1135          * @param $urlaction String
1136          * @return Array
1137          */
1138         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1139                 $title = Title::newFromText( $name );
1140                 self::checkTitle( $title, $name );
1141
1142                 return array(
1143                         'href' => $title->getLocalURL( $urlaction ),
1144                         'exists' => true
1145                 );
1146         }
1147
1148         /**
1149          * make sure we have some title to operate on
1150          *
1151          * @param $title Title
1152          * @param $name string
1153          */
1154         static function checkTitle( &$title, $name ) {
1155                 if ( !is_object( $title ) ) {
1156                         $title = Title::newFromText( $name );
1157                         if ( !is_object( $title ) ) {
1158                                 $title = Title::newFromText( '--error: link target missing--' );
1159                         }
1160                 }
1161         }
1162
1163         /**
1164          * Build an array that represents the sidebar(s), the navigation bar among them
1165          *
1166          * @return array
1167          */
1168         function buildSidebar() {
1169                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1170                 wfProfileIn( __METHOD__ );
1171
1172                 $key = wfMemcKey( 'sidebar', $this->getLanguage()->getCode() );
1173
1174                 if ( $wgEnableSidebarCache ) {
1175                         $cachedsidebar = $parserMemc->get( $key );
1176                         if ( $cachedsidebar ) {
1177                                 wfProfileOut( __METHOD__ );
1178                                 return $cachedsidebar;
1179                         }
1180                 }
1181
1182                 $bar = array();
1183                 $this->addToSidebar( $bar, 'sidebar' );
1184
1185                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1186                 if ( $wgEnableSidebarCache ) {
1187                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1188                 }
1189
1190                 wfProfileOut( __METHOD__ );
1191                 return $bar;
1192         }
1193         /**
1194          * Add content from a sidebar system message
1195          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1196          *
1197          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1198          *
1199          * @param $bar array
1200          * @param $message String
1201          */
1202         function addToSidebar( &$bar, $message ) {
1203                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1204         }
1205
1206         /**
1207          * Add content from plain text
1208          * @since 1.17
1209          * @param $bar array
1210          * @param $text string
1211          * @return Array
1212          */
1213         function addToSidebarPlain( &$bar, $text ) {
1214                 $lines = explode( "\n", $text );
1215
1216                 $heading = '';
1217
1218                 foreach ( $lines as $line ) {
1219                         if ( strpos( $line, '*' ) !== 0 ) {
1220                                 continue;
1221                         }
1222                         $line = rtrim( $line, "\r" ); // for Windows compat
1223
1224                         if ( strpos( $line, '**' ) !== 0 ) {
1225                                 $heading = trim( $line, '* ' );
1226                                 if ( !array_key_exists( $heading, $bar ) ) {
1227                                         $bar[$heading] = array();
1228                                 }
1229                         } else {
1230                                 $line = trim( $line, '* ' );
1231
1232                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1233                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1234                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1235                                         $extraAttribs = array();
1236
1237                                         $msgLink = $this->msg( $line[0] )->inContentLanguage();
1238                                         if ( $msgLink->exists() ) {
1239                                                 $link = $msgLink->text();
1240                                                 if ( $link == '-' ) {
1241                                                         continue;
1242                                                 }
1243                                         } else {
1244                                                 $link = $line[0];
1245                                         }
1246
1247                                         $msgText = $this->msg( $line[1] );
1248                                         if ( $msgText->exists() ) {
1249                                                 $text = $msgText->text();
1250                                         } else {
1251                                                 $text = $line[1];
1252                                         }
1253
1254                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1255                                                 $href = $link;
1256
1257                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1258                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1259                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1260                                                         $extraAttribs['rel'] = 'nofollow';
1261                                                 }
1262
1263                                                 global $wgExternalLinkTarget;
1264                                                 if ( $wgExternalLinkTarget) {
1265                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1266                                                 }
1267                                         } else {
1268                                                 $title = Title::newFromText( $link );
1269
1270                                                 if ( $title ) {
1271                                                         $title = $title->fixSpecialName();
1272                                                         $href = $title->getLinkURL();
1273                                                 } else {
1274                                                         $href = 'INVALID-TITLE';
1275                                                 }
1276                                         }
1277
1278                                         $bar[$heading][] = array_merge( array(
1279                                                 'text' => $text,
1280                                                 'href' => $href,
1281                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1282                                                 'active' => false
1283                                         ), $extraAttribs );
1284                                 } else {
1285                                         continue;
1286                                 }
1287                         }
1288                 }
1289
1290                 return $bar;
1291         }
1292
1293         /**
1294          * Should we load mediawiki.legacy.wikiprintable?  Skins that have their own
1295          * print stylesheet should override this and return false.  (This is an
1296          * ugly hack to get Monobook to play nicely with OutputPage::headElement().)
1297          *
1298          * @return bool
1299          */
1300         public function commonPrintStylesheet() {
1301                 return true;
1302         }
1303
1304         /**
1305          * Gets new talk page messages for the current user.
1306          * @return MediaWiki message or if no new talk page messages, nothing
1307          */
1308         function getNewtalks() {
1309                 $out = $this->getOutput();
1310
1311                 $newtalks = $this->getUser()->getNewMessageLinks();
1312                 $ntl = '';
1313
1314                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1315                         $userTitle = $this->getUser()->getUserPage();
1316                         $userTalkTitle = $userTitle->getTalkPage();
1317
1318                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1319                                 $newMessagesLink = Linker::linkKnown(
1320                                         $userTalkTitle,
1321                                         $this->msg( 'newmessageslink' )->escaped(),
1322                                         array(),
1323                                         array( 'redirect' => 'no' )
1324                                 );
1325
1326                                 $newMessagesDiffLink = Linker::linkKnown(
1327                                         $userTalkTitle,
1328                                         $this->msg( 'newmessagesdifflink' )->escaped(),
1329                                         array(),
1330                                         array( 'diff' => 'cur' )
1331                                 );
1332
1333                                 $ntl = $this->msg(
1334                                         'youhavenewmessages',
1335                                         $newMessagesLink,
1336                                         $newMessagesDiffLink
1337                                 )->text();
1338                                 # Disable Squid cache
1339                                 $out->setSquidMaxage( 0 );
1340                         }
1341                 } elseif ( count( $newtalks ) ) {
1342                         // _>" " for BC <= 1.16
1343                         $sep = str_replace( '_', ' ', $this->msg( 'newtalkseparator' )->escaped() );
1344                         $msgs = array();
1345
1346                         foreach ( $newtalks as $newtalk ) {
1347                                 $msgs[] = Xml::element(
1348                                         'a',
1349                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1350                                 );
1351                         }
1352                         $parts = implode( $sep, $msgs );
1353                         $ntl = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1354                         $out->setSquidMaxage( 0 );
1355                 }
1356
1357                 return $ntl;
1358         }
1359
1360         /**
1361          * Get a cached notice
1362          *
1363          * @param $name String: message name, or 'default' for $wgSiteNotice
1364          * @return String: HTML fragment
1365          */
1366         private function getCachedNotice( $name ) {
1367                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1368
1369                 wfProfileIn( __METHOD__ );
1370
1371                 $needParse = false;
1372
1373                 if( $name === 'default' ) {
1374                         // special case
1375                         global $wgSiteNotice;
1376                         $notice = $wgSiteNotice;
1377                         if( empty( $notice ) ) {
1378                                 wfProfileOut( __METHOD__ );
1379                                 return false;
1380                         }
1381                 } else {
1382                         $msg = $this->msg( $name )->inContentLanguage();
1383                         if( $msg->isDisabled() ) {
1384                                 wfProfileOut( __METHOD__ );
1385                                 return false;
1386                         }
1387                         $notice = $msg->plain();
1388                 }
1389
1390                 // Use the extra hash appender to let eg SSL variants separately cache.
1391                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1392                 $cachedNotice = $parserMemc->get( $key );
1393                 if( is_array( $cachedNotice ) ) {
1394                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1395                                 $notice = $cachedNotice['html'];
1396                         } else {
1397                                 $needParse = true;
1398                         }
1399                 } else {
1400                         $needParse = true;
1401                 }
1402
1403                 if ( $needParse ) {
1404                         $parsed = $this->getOutput()->parse( $notice );
1405                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1406                         $notice = $parsed;
1407                 }
1408
1409                 $notice = Html::rawElement( 'div', array( 'id' => 'localNotice',
1410                         'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $notice );
1411                 wfProfileOut( __METHOD__ );
1412                 return $notice;
1413         }
1414
1415         /**
1416          * Get a notice based on page's namespace
1417          *
1418          * @return String: HTML fragment
1419          */
1420         function getNamespaceNotice() {
1421                 wfProfileIn( __METHOD__ );
1422
1423                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1424                 $namespaceNotice = $this->getCachedNotice( $key );
1425                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1426                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1427                 } else {
1428                         $namespaceNotice = '';
1429                 }
1430
1431                 wfProfileOut( __METHOD__ );
1432                 return $namespaceNotice;
1433         }
1434
1435         /**
1436          * Get the site notice
1437          *
1438          * @return String: HTML fragment
1439          */
1440         function getSiteNotice() {
1441                 wfProfileIn( __METHOD__ );
1442                 $siteNotice = '';
1443
1444                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1445                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1446                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1447                         } else {
1448                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1449                                 if ( !$anonNotice ) {
1450                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1451                                 } else {
1452                                         $siteNotice = $anonNotice;
1453                                 }
1454                         }
1455                         if ( !$siteNotice ) {
1456                                 $siteNotice = $this->getCachedNotice( 'default' );
1457                         }
1458                 }
1459
1460                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1461                 wfProfileOut( __METHOD__ );
1462                 return $siteNotice;
1463         }
1464
1465         /**
1466          * Create a section edit link.  This supersedes editSectionLink() and
1467          * editSectionLinkForOther().
1468          *
1469          * @param $nt      Title  The title being linked to (may not be the same as
1470          *   $wgTitle, if the section is included from a template)
1471          * @param $section string The designation of the section being pointed to,
1472          *   to be included in the link, like "&section=$section"
1473          * @param $tooltip string The tooltip to use for the link: will be escaped
1474          *   and wrapped in the 'editsectionhint' message
1475          * @param $lang    string Language code
1476          * @return         string HTML to use for edit link
1477          */
1478         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1479                 // HTML generated here should probably have userlangattributes
1480                 // added to it for LTR text on RTL pages
1481                 $attribs = array();
1482                 if ( !is_null( $tooltip ) ) {
1483                         # Bug 25462: undo double-escaping.
1484                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1485                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1486                 }
1487                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1488                         $attribs,
1489                         array( 'action' => 'edit', 'section' => $section ),
1490                         array( 'noclasses', 'known' )
1491                 );
1492
1493                 # Run the old hook.  This takes up half of the function . . . hopefully
1494                 # we can rid of it someday.
1495                 $attribs = '';
1496                 if ( $tooltip ) {
1497                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1498                         $attribs = " title=\"$attribs\"";
1499                 }
1500                 $result = null;
1501                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1502                 if ( !is_null( $result ) ) {
1503                         # For reverse compatibility, add the brackets *after* the hook is
1504                         # run, and even add them to hook-provided text.  (This is the main
1505                         # reason that the EditSectionLink hook is deprecated in favor of
1506                         # DoEditSectionLink: it can't change the brackets or the span.)
1507                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1508                         return "<span class=\"editsection\">$result</span>";
1509                 }
1510
1511                 # Add the brackets and the span, and *then* run the nice new hook, with
1512                 # clean and non-redundant arguments.
1513                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1514                 $result = "<span class=\"editsection\">$result</span>";
1515
1516                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1517                 return $result;
1518         }
1519
1520         /**
1521          * Use PHP's magic __call handler to intercept legacy calls to the linker
1522          * for backwards compatibility.
1523          *
1524          * @param $fname String Name of called method
1525          * @param $args Array Arguments to the method
1526          */
1527         function __call( $fname, $args ) {
1528                 $realFunction = array( 'Linker', $fname );
1529                 if ( is_callable( $realFunction ) ) {
1530                         return call_user_func_array( $realFunction, $args );
1531                 } else {
1532                         $className = get_class( $this );
1533                         throw new MWException( "Call to undefined method $className::$fname" );
1534                 }
1535         }
1536
1537 }