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;
 160                 return $skin;
 161         }
 162
 163         /** @return string skin name */
 164         public function getSkinName() {
 165                 return $this->skinname;
 166         }
 167
 168         function initPage( OutputPage $out ) {
 169                 wfProfileIn( __METHOD__ );
 170
 171                 $this->preloadExistence();
 172
 173                 wfProfileOut( __METHOD__ );
 174         }
 175
 176         /**
 177          * Preload the existence of three commonly-requested pages in a single query
 178          */
 179         function preloadExistence() {
 180                 $user = $this->getUser();
 181
 182                 // User/talk link
 183                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 184
 185                 // Other tab link
 186                 if ( $this->getTitle()->getNamespace() == NS_SPECIAL ) {
 187                         // nothing
 188                 } elseif ( $this->getTitle()->isTalkPage() ) {
 189                         $titles[] = $this->getTitle()->getSubjectPage();
 190                 } else {
 191                         $titles[] = $this->getTitle()->getTalkPage();
 192                 }
 193
 194                 $lb = new LinkBatch( $titles );
 195                 $lb->setCaller( __METHOD__ );
 196                 $lb->execute();
 197         }
 198
 199         /**
 200          * Get the current revision ID
 201          *
 202          * @return Integer
 203          */
 204         public function getRevisionId() {
 205                 return $this->getOutput()->getRevisionId();
 206         }
 207
 208         /**
 209          * Whether the revision displayed is the latest revision of the page
 210          *
 211          * @return Boolean
 212          */
 213         public function isRevisionCurrent() {
 214                 $revID = $this->getRevisionId();
 215                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 216         }
 217
 218         /**
 219          * Set the "relevant" title
 220          * @see self::getRelevantTitle()
 221          * @param $t Title object to use
 222          */
 223         public function setRelevantTitle( $t ) {
 224                 $this->mRelevantTitle = $t;
 225         }
 226
 227         /**
 228          * Return the "relevant" title.
 229          * A "relevant" title is not necessarily the actual title of the page.
 230          * Special pages like Special:MovePage use set the page they are acting on
 231          * as their "relevant" title, this allows the skin system to display things
 232          * such as content tabs which belong to to that page instead of displaying
 233          * a basic special page tab which has almost no meaning.
 234          *
 235          * @return Title
 236          */
 237         public function getRelevantTitle() {
 238                 if ( isset($this->mRelevantTitle) ) {
 239                         return $this->mRelevantTitle;
 240                 }
 241                 return $this->getTitle();
 242         }
 243
 244         /**
 245          * Set the "relevant" user
 246          * @see self::getRelevantUser()
 247          * @param $u User object to use
 248          */
 249         public function setRelevantUser( $u ) {
 250                 $this->mRelevantUser = $u;
 251         }
 252
 253         /**
 254          * Return the "relevant" user.
 255          * A "relevant" user is similar to a relevant title. Special pages like
 256          * Special:Contributions mark the user which they are relevant to so that
 257          * things like the toolbox can display the information they usually are only
 258          * able to display on a user's userpage and talkpage.
 259          * @return User
 260          */
 261         public function getRelevantUser() {
 262                 if ( isset($this->mRelevantUser) ) {
 263                         return $this->mRelevantUser;
 264                 }
 265                 $title = $this->getRelevantTitle();
 266                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 267                         $rootUser = strtok( $title->getText(), '/' );
 268                         if ( User::isIP( $rootUser ) ) {
 269                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 270                         } else {
 271                                 $user = User::newFromName( $rootUser );
 272                                 if ( $user->isLoggedIn() ) {
 273                                         $this->mRelevantUser = $user;
 274                                 }
 275                         }
 276                         return $this->mRelevantUser;
 277                 }
 278                 return null;
 279         }
 280
 281         /**
 282          * Outputs the HTML generated by other functions.
 283          * @param $out OutputPage
 284          */
 285         abstract function outputPage( OutputPage $out );
 286
 287         static function makeVariablesScript( $data ) {
 288                 if ( $data ) {
 289                         return Html::inlineScript(
 290                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 291                         );
 292                 } else {
 293                         return '';
 294                 }
 295         }
 296
 297         /**
 298          * Generated JavaScript action=raw&gen=js
 299          * This used to load MediaWiki:Common.js and the skin-specific style
 300          * before the ResourceLoader.
 301          *
 302          * @deprecated since 1.18 Use the ResourceLoader instead. This may be removed at some
 303          * point.
 304          * @param $skinName String: If set, overrides the skin name
 305          * @return String
 306          */
 307         public function generateUserJs( $skinName = null ) {
 308                 return '';
 309         }
 310
 311         /**
 312          * Generate user stylesheet for action=raw&gen=css
 313          *
 314          * @deprecated since 1.18 Use the ResourceLoader instead. This may be removed at some
 315          * point.
 316          * @return String
 317          */
 318         public function generateUserStylesheet() {
 319                 return '';
 320         }
 321
 322         /**
 323          * Get the query to generate a dynamic stylesheet
 324          *
 325          * @return array
 326          */
 327         public static function getDynamicStylesheetQuery() {
 328                 global $wgSquidMaxage;
 329
 330                 return array(
 331                                 'action' => 'raw',
 332                                 'maxage' => $wgSquidMaxage,
 333                                 'usemsgcache' => 'yes',
 334                                 'ctype' => 'text/css',
 335                                 'smaxage' => $wgSquidMaxage,
 336                         );
 337         }
 338
 339         /**
 340          * Add skin specific stylesheets
 341          * Calling this method with an $out of anything but the same OutputPage
 342          * inside ->getOutput() is deprecated. The $out arg is kept
 343          * for compatibility purposes with skins.
 344          * @param $out OutputPage
 345          * @delete
 346          */
 347         abstract function setupSkinUserCss( OutputPage $out );
 348
 349         /**
 350          * TODO: document
 351          * @param $title Title
 352          * @return String
 353          */
 354         function getPageClasses( $title ) {
 355                 $numeric = 'ns-' . $title->getNamespace();
 356
 357                 if ( $title->getNamespace() == NS_SPECIAL ) {
 358                         $type = 'ns-special';
 359                         // bug 23315: provide a class based on the canonical special page name without subpages
 360                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 361                         if ( $canonicalName ) {
 362                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 363                         } else {
 364                                 $type .= ' mw-invalidspecialpage';
 365                         }
 366                 } elseif ( $title->isTalkPage() ) {
 367                         $type = 'ns-talk';
 368                 } else {
 369                         $type = 'ns-subject';
 370                 }
 371
 372                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 373
 374                 return "$numeric $type $name";
 375         }
 376
 377         /**
 378          * This will be called by OutputPage::headElement when it is creating the
 379          * <body> tag, skins can override it if they have a need to add in any
 380          * body attributes or classes of their own.
 381          * @param $out OutputPage
 382          * @param $bodyAttrs Array
 383          */
 384         function addToBodyAttributes( $out, &$bodyAttrs ) {
 385                 // does nothing by default
 386         }
 387
 388         /**
 389          * URL to the logo
 390          * @return String
 391          */
 392         function getLogo() {
 393                 global $wgLogo;
 394                 return $wgLogo;
 395         }
 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 = wfMsgExt( 'colon-separator', 'escapenoentities' );
 412
 413                 if ( !empty( $allCats['normal'] ) ) {
 414                         $t = $embed . implode( "{$pop}{$embed}" , $allCats['normal'] ) . $pop;
 415
 416                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 417                         $s .= '<div id="mw-normal-catlinks">' .
 418                                 Linker::link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 419                                 . $colon . '<ul>' . $t . '</ul>' . '</div>';
 420                 }
 421
 422                 # Hidden categories
 423                 if ( isset( $allCats['hidden'] ) ) {
 424                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 425                                 $class = 'mw-hidden-cats-user-shown';
 426                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 427                                 $class = 'mw-hidden-cats-ns-shown';
 428                         } else {
 429                                 $class = 'mw-hidden-cats-hidden';
 430                         }
 431
 432                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 433                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 434                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}" , $allCats['hidden'] ) . $pop . '</ul>' .
 435                                 '</div>';
 436                 }
 437
 438                 # optional 'dmoz-like' category browser. Will be shown under the list
 439                 # of categories an article belong to
 440                 if ( $wgUseCategoryBrowser ) {
 441                         $s .= '<br /><hr />';
 442
 443                         # get a big array of the parents tree
 444                         $parenttree = $this->getTitle()->getParentCategoryTree();
 445                         # Skin object passed by reference cause it can not be
 446                         # accessed under the method subfunction drawCategoryBrowser
 447                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 448                         # Clean out bogus first entry and sort them
 449                         unset( $tempout[0] );
 450                         asort( $tempout );
 451                         # Output one per line
 452                         $s .= implode( "<br />\n", $tempout );
 453                 }
 454
 455                 return $s;
 456         }
 457
 458         /**
 459          * Render the array as a serie of links.
 460          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 461          * @return String separated by &gt;, terminate with "\n"
 462          */
 463         function drawCategoryBrowser( $tree ) {
 464                 $return = '';
 465
 466                 foreach ( $tree as $element => $parent ) {
 467                         if ( empty( $parent ) ) {
 468                                 # element start a new list
 469                                 $return .= "\n";
 470                         } else {
 471                                 # grab the others elements
 472                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 473                         }
 474
 475                         # add our current element to the list
 476                         $eltitle = Title::newFromText( $element );
 477                         $return .=  Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 478                 }
 479
 480                 return $return;
 481         }
 482
 483         function getCategories() {
 484                 $out = $this->getOutput();
 485
 486                 $catlinks = $this->getCategoryLinks();
 487
 488                 $classes = 'catlinks';
 489
 490                 // Check what we're showing
 491                 $allCats = $out->getCategoryLinks();
 492                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 493                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 494
 495                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 496                         $classes .= ' catlinks-allhidden';
 497                 }
 498
 499                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 500         }
 501
 502         /**
 503          * This runs a hook to allow extensions placing their stuff after content
 504          * and article metadata (e.g. categories).
 505          * Note: This function has nothing to do with afterContent().
 506          *
 507          * This hook is placed here in order to allow using the same hook for all
 508          * skins, both the SkinTemplate based ones and the older ones, which directly
 509          * use this class to get their data.
 510          *
 511          * The output of this function gets processed in SkinTemplate::outputPage() for
 512          * the SkinTemplate based skins, all other skins should directly echo it.
 513          *
 514          * @return String, empty by default, if not changed by any hook function.
 515          */
 516         protected function afterContentHook() {
 517                 $data = '';
 518
 519                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 520                         // adding just some spaces shouldn't toggle the output
 521                         // of the whole <div/>, so we use trim() here
 522                         if ( trim( $data ) != '' ) {
 523                                 // Doing this here instead of in the skins to
 524                                 // ensure that the div has the same ID in all
 525                                 // skins
 526                                 $data = "<div id='mw-data-after-content'>\n" .
 527                                         "\t$data\n" .
 528                                         "</div>\n";
 529                         }
 530                 } else {
 531                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 532                 }
 533
 534                 return $data;
 535         }
 536
 537         /**
 538          * Generate debug data HTML for displaying at the bottom of the main content
 539          * area.
 540          * @return String HTML containing debug data, if enabled (otherwise empty).
 541          */
 542         protected function generateDebugHTML() {
 543                 global $wgShowDebug;
 544
 545                 if ( $wgShowDebug ) {
 546                         $listInternals = $this->formatDebugHTML( $this->getOutput()->mDebugtext );
 547                         return "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 548                                 $listInternals . "</ul>\n";
 549                 }
 550
 551                 return '';
 552         }
 553
 554         private function formatDebugHTML( $debugText ) {
 555                 global $wgDebugTimestamps;
 556
 557                 $lines = explode( "\n", $debugText );
 558                 $curIdent = 0;
 559                 $ret = '<li>';
 560
 561                 foreach ( $lines as $line ) {
 562                         $pre = '';
 563                         if ( $wgDebugTimestamps ) {
 564                                 $matches = array();
 565                                 if ( preg_match( '/^(\d+\.\d+\s{2})/', $line, $matches ) ) {
 566                                         $pre = $matches[1];
 567                                         $line = substr( $line, strlen( $pre ) );
 568                                 }
 569                         }
 570                         $display = ltrim( $line );
 571                         $ident = strlen( $line ) - strlen( $display );
 572                         $diff = $ident - $curIdent;
 573
 574                         $display = $pre . $display;
 575                         if ( $display == '' ) {
 576                                 $display = "\xc2\xa0";
 577                         }
 578
 579                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 580                                 $ident = $curIdent;
 581                                 $diff = 0;
 582                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 583                         } else {
 584                                 $display = htmlspecialchars( $display );
 585                         }
 586
 587                         if ( $diff < 0 ) {
 588                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 589                         } elseif ( $diff == 0 ) {
 590                                 $ret .= "</li><li>\n";
 591                         } else {
 592                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 593                         }
 594                         $ret .= "<tt>$display</tt>\n";
 595
 596                         $curIdent = $ident;
 597                 }
 598
 599                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 600
 601                 return $ret;
 602         }
 603
 604         /**
 605          * This gets called shortly before the </body> tag.
 606          *
 607          * @return String HTML-wrapped JS code to be put before </body>
 608          */
 609         function bottomScripts() {
 610                 // TODO and the suckage continues. This function is really just a wrapper around
 611                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 612                 // up at some point
 613                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 614                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 615
 616                 return $bottomScriptText;
 617         }
 618
 619         /** @return string Retrievied from HTML text */
 620         function printSource() {
 621                 $url = htmlspecialchars( $this->getTitle()->getFullURL() );
 622                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 623         }
 624
 625         function getUndeleteLink() {
 626                 $action = $this->getRequest()->getVal( 'action', 'view' );
 627
 628                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) && !$this->getUser()->isBlocked() &&
 629                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 630
 631                         $includeSuppressed = $this->getUser()->isAllowed( 'suppressrevision' );
 632                         $n = $this->getTitle()->isDeleted( $includeSuppressed );
 633
 634                         if ( $n ) {
 635                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 636                                         $msg = 'thisisdeleted';
 637                                 } else {
 638                                         $msg = 'viewdeleted';
 639                                 }
 640
 641                                 return wfMsg(
 642                                         $msg,
 643                                         Linker::linkKnown(
 644                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 645                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $this->getLang()->formatNum( $n ) )
 646                                         )
 647                                 );
 648                         }
 649                 }
 650
 651                 return '';
 652         }
 653
 654         function subPageSubtitle() {
 655                 $out = $this->getOutput();
 656                 $subpages = '';
 657
 658                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 659                         return $subpages;
 660                 }
 661
 662                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 663                         $ptext = $this->getTitle()->getPrefixedText();
 664                         if ( preg_match( '/\//', $ptext ) ) {
 665                                 $links = explode( '/', $ptext );
 666                                 array_pop( $links );
 667                                 $c = 0;
 668                                 $growinglink = '';
 669                                 $display = '';
 670
 671                                 foreach ( $links as $link ) {
 672                                         $growinglink .= $link;
 673                                         $display .= $link;
 674                                         $linkObj = Title::newFromText( $growinglink );
 675
 676                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 677                                                 $getlink = Linker::linkKnown(
 678                                                         $linkObj,
 679                                                         htmlspecialchars( $display )
 680                                                 );
 681
 682                                                 $c++;
 683
 684                                                 if ( $c > 1 ) {
 685                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
 686                                                 } else  {
 687                                                         $subpages .= '&lt; ';
 688                                                 }
 689
 690                                                 $subpages .= $getlink;
 691                                                 $display = '';
 692                                         } else {
 693                                                 $display .= '/';
 694                                         }
 695                                         $growinglink .= '/';
 696                                 }
 697                         }
 698                 }
 699
 700                 return $subpages;
 701         }
 702
 703         /**
 704          * Returns true if the IP should be shown in the header
 705          * @return Bool
 706          */
 707         function showIPinHeader() {
 708                 global $wgShowIPinHeader;
 709                 return $wgShowIPinHeader && session_id() != '';
 710         }
 711
 712         function getSearchLink() {
 713                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 714                 return $searchPage->getLocalURL();
 715         }
 716
 717         function escapeSearchLink() {
 718                 return htmlspecialchars( $this->getSearchLink() );
 719         }
 720
 721         function getCopyright( $type = 'detect' ) {
 722                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 723
 724                 if ( $type == 'detect' ) {
 725                         if ( !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 726                                 $type = 'history';
 727                         } else {
 728                                 $type = 'normal';
 729                         }
 730                 }
 731
 732                 if ( $type == 'history' ) {
 733                         $msg = 'history_copyright';
 734                 } else {
 735                         $msg = 'copyright';
 736                 }
 737
 738                 if ( $wgRightsPage ) {
 739                         $title = Title::newFromText( $wgRightsPage );
 740                         $link = Linker::linkKnown( $title, $wgRightsText );
 741                 } elseif ( $wgRightsUrl ) {
 742                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 743                 } elseif ( $wgRightsText ) {
 744                         $link = $wgRightsText;
 745                 } else {
 746                         # Give up now
 747                         return '';
 748                 }
 749
 750                 // Allow for site and per-namespace customization of copyright notice.
 751                 $forContent = true;
 752
 753                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 754
 755                 if ( $forContent ) {
 756                         return wfMsgForContent( $msg, $link );
 757                 } else {
 758                         return wfMsg( $msg, $link );
 759                 }
 760         }
 761
 762         function getCopyrightIcon() {
 763                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 764
 765                 $out = '';
 766
 767                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 768                         $out = $wgCopyrightIcon;
 769                 } elseif ( $wgRightsIcon ) {
 770                         $icon = htmlspecialchars( $wgRightsIcon );
 771
 772                         if ( $wgRightsUrl ) {
 773                                 $url = htmlspecialchars( $wgRightsUrl );
 774                                 $out .= '<a href="' . $url . '">';
 775                         }
 776
 777                         $text = htmlspecialchars( $wgRightsText );
 778                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 779
 780                         if ( $wgRightsUrl ) {
 781                                 $out .= '</a>';
 782                         }
 783                 }
 784
 785                 return $out;
 786         }
 787
 788         /**
 789          * Gets the powered by MediaWiki icon.
 790          * @return string
 791          */
 792         function getPoweredBy() {
 793                 global $wgStylePath;
 794
 795                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 796                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 797                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 798                 return $text;
 799         }
 800
 801         /**
 802          * Get the timestamp of the latest revision, formatted in user language
 803          *
 804          * @param $article Article object. Used if we're working with the current revision
 805          * @return String
 806          */
 807         protected function lastModified( $article ) {
 808                 if ( !$this->isRevisionCurrent() ) {
 809                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 810                 } else {
 811                         $timestamp = $article->getTimestamp();
 812                 }
 813
 814                 if ( $timestamp ) {
 815                         $d = $this->getLang()->date( $timestamp, true );
 816                         $t = $this->getLang()->time( $timestamp, true );
 817                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
 818                 } else {
 819                         $s = '';
 820                 }
 821
 822                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 823                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
 824                 }
 825
 826                 return $s;
 827         }
 828
 829         function logoText( $align = '' ) {
 830                 if ( $align != '' ) {
 831                         $a = " align='{$align}'";
 832                 } else {
 833                         $a = '';
 834                 }
 835
 836                 $mp = wfMsgHtml( 'mainpage' );
 837                 $mptitle = Title::newMainPage();
 838                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
 839
 840                 $logourl = $this->getLogo();
 841                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 842
 843                 return $s;
 844         }
 845
 846         /**
 847          * Renders a $wgFooterIcons icon acording to the method's arguments
 848          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
 849          * @param $withImage Bool|String: Whether to use the icon's image or output a text-only footericon
 850          * @return String HTML
 851          */
 852         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 853                 if ( is_string( $icon ) ) {
 854                         $html = $icon;
 855                 } else { // Assuming array
 856                         $url = isset($icon["url"]) ? $icon["url"] : null;
 857                         unset( $icon["url"] );
 858                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 859                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
 860                         } else {
 861                                 $html = htmlspecialchars( $icon["alt"] );
 862                         }
 863                         if ( $url ) {
 864                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
 865                         }
 866                 }
 867                 return $html;
 868         }
 869
 870         /**
 871          * Gets the link to the wiki's main page.
 872          * @return string
 873          */
 874         function mainPageLink() {
 875                 $s = Linker::linkKnown(
 876                         Title::newMainPage(),
 877                         wfMsgHtml( 'mainpage' )
 878                 );
 879
 880                 return $s;
 881         }
 882
 883         public function footerLink( $desc, $page ) {
 884                 // if the link description has been set to "-" in the default language,
 885                 if ( wfMsgForContent( $desc )  == '-' ) {
 886                         // then it is disabled, for all languages.
 887                         return '';
 888                 } else {
 889                         // Otherwise, we display the link for the user, described in their
 890                         // language (which may or may not be the same as the default language),
 891                         // but we make the link target be the one site-wide page.
 892                         $title = Title::newFromText( wfMsgForContent( $page ) );
 893
 894                         return Linker::linkKnown(
 895                                 $title,
 896                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
 897                         );
 898                 }
 899         }
 900
 901         /**
 902          * Gets the link to the wiki's privacy policy page.
 903          * @return String HTML
 904          */
 905         function privacyLink() {
 906                 return $this->footerLink( 'privacy', 'privacypage' );
 907         }
 908
 909         /**
 910          * Gets the link to the wiki's about page.
 911          * @return String HTML
 912          */
 913         function aboutLink() {
 914                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 915         }
 916
 917         /**
 918          * Gets the link to the wiki's general disclaimers page.
 919          * @return String HTML
 920          */
 921         function disclaimerLink() {
 922                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
 923         }
 924
 925         /**
 926          * Return URL options for the 'edit page' link.
 927          * This may include an 'oldid' specifier, if the current page view is such.
 928          *
 929          * @return array
 930          * @private
 931          */
 932         function editUrlOptions() {
 933                 $options = array( 'action' => 'edit' );
 934
 935                 if ( !$this->isRevisionCurrent() ) {
 936                         $options['oldid'] = intval( $this->getRevisionId() );
 937                 }
 938
 939                 return $options;
 940         }
 941
 942         function showEmailUser( $id ) {
 943                 $targetUser = User::newFromId( $id );
 944                 return $this->getUser()->canSendEmail() && # the sending user must have a confirmed email address
 945                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
 946         }
 947
 948         /**
 949          * Return a fully resolved style path url to images or styles stored in the common folder.
 950          * This method returns a url resolved using the configured skin style path
 951          * and includes the style version inside of the url.
 952          * @param $name String: The name or path of a skin resource file
 953          * @return String The fully resolved style path url including styleversion
 954          */
 955         function getCommonStylePath( $name ) {
 956                 global $wgStylePath, $wgStyleVersion;
 957                 return "$wgStylePath/common/$name?$wgStyleVersion";
 958         }
 959
 960         /**
 961          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
 962          * This method returns a url resolved using the configured skin style path
 963          * and includes the style version inside of the url.
 964          * @param $name String: The name or path of a skin resource file
 965          * @return String The fully resolved style path url including styleversion
 966          */
 967         function getSkinStylePath( $name ) {
 968                 global $wgStylePath, $wgStyleVersion;
 969                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
 970         }
 971
 972         /* these are used extensively in SkinTemplate, but also some other places */
 973         static function makeMainPageUrl( $urlaction = '' ) {
 974                 $title = Title::newMainPage();
 975                 self::checkTitle( $title, '' );
 976
 977                 return $title->getLocalURL( $urlaction );
 978         }
 979
 980         static function makeSpecialUrl( $name, $urlaction = '' ) {
 981                 $title = SpecialPage::getSafeTitleFor( $name );
 982                 return $title->getLocalURL( $urlaction );
 983         }
 984
 985         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
 986                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
 987                 return $title->getLocalURL( $urlaction );
 988         }
 989
 990         static function makeI18nUrl( $name, $urlaction = '' ) {
 991                 $title = Title::newFromText( wfMsgForContent( $name ) );
 992                 self::checkTitle( $title, $name );
 993                 return $title->getLocalURL( $urlaction );
 994         }
 995
 996         static function makeUrl( $name, $urlaction = '' ) {
 997                 $title = Title::newFromText( $name );
 998                 self::checkTitle( $title, $name );
 999
1000                 return $title->getLocalURL( $urlaction );
1001         }
1002
1003         /**
1004          * If url string starts with http, consider as external URL, else
1005          * internal
1006          * @param $name String
1007          * @return String URL
1008          */
1009         static function makeInternalOrExternalUrl( $name ) {
1010                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1011                         return $name;
1012                 } else {
1013                         return self::makeUrl( $name );
1014                 }
1015         }
1016
1017         # this can be passed the NS number as defined in Language.php
1018         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1019                 $title = Title::makeTitleSafe( $namespace, $name );
1020                 self::checkTitle( $title, $name );
1021
1022                 return $title->getLocalURL( $urlaction );
1023         }
1024
1025         /* these return an array with the 'href' and boolean 'exists' */
1026         static function makeUrlDetails( $name, $urlaction = '' ) {
1027                 $title = Title::newFromText( $name );
1028                 self::checkTitle( $title, $name );
1029
1030                 return array(
1031                         'href' => $title->getLocalURL( $urlaction ),
1032                         'exists' => $title->getArticleID() != 0,
1033                 );
1034         }
1035
1036         /**
1037          * Make URL details where the article exists (or at least it's convenient to think so)
1038          * @param $name String Article name
1039          * @param $urlaction String
1040          * @return Array
1041          */
1042         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1043                 $title = Title::newFromText( $name );
1044                 self::checkTitle( $title, $name );
1045
1046                 return array(
1047                         'href' => $title->getLocalURL( $urlaction ),
1048                         'exists' => true
1049                 );
1050         }
1051
1052         # make sure we have some title to operate on
1053         static function checkTitle( &$title, $name ) {
1054                 if ( !is_object( $title ) ) {
1055                         $title = Title::newFromText( $name );
1056                         if ( !is_object( $title ) ) {
1057                                 $title = Title::newFromText( '--error: link target missing--' );
1058                         }
1059                 }
1060         }
1061
1062         /**
1063          * Build an array that represents the sidebar(s), the navigation bar among them
1064          *
1065          * @return array
1066          */
1067         function buildSidebar() {
1068                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1069                 wfProfileIn( __METHOD__ );
1070
1071                 $key = wfMemcKey( 'sidebar', $this->getLang()->getCode() );
1072
1073                 if ( $wgEnableSidebarCache ) {
1074                         $cachedsidebar = $parserMemc->get( $key );
1075                         if ( $cachedsidebar ) {
1076                                 wfProfileOut( __METHOD__ );
1077                                 return $cachedsidebar;
1078                         }
1079                 }
1080
1081                 $bar = array();
1082                 $this->addToSidebar( $bar, 'sidebar' );
1083
1084                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1085                 if ( $wgEnableSidebarCache ) {
1086                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1087                 }
1088
1089                 wfProfileOut( __METHOD__ );
1090                 return $bar;
1091         }
1092         /**
1093          * Add content from a sidebar system message
1094          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1095          *
1096          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1097          *
1098          * @param &$bar array
1099          * @param $message String
1100          */
1101         function addToSidebar( &$bar, $message ) {
1102                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1103         }
1104
1105         /**
1106          * Add content from plain text
1107          * @since 1.17
1108          * @param &$bar array
1109          * @param $text string
1110          * @return Array
1111          */
1112         function addToSidebarPlain( &$bar, $text ) {
1113                 $lines = explode( "\n", $text );
1114                 $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.
1115
1116                 $heading = '';
1117
1118                 foreach ( $lines as $line ) {
1119                         if ( strpos( $line, '*' ) !== 0 ) {
1120                                 continue;
1121                         }
1122                         $line = rtrim( $line, "\r" ); // for Windows compat
1123
1124                         if ( strpos( $line, '**' ) !== 0 ) {
1125                                 $heading = trim( $line, '* ' );
1126                                 if ( !array_key_exists( $heading, $bar ) ) {
1127                                         $bar[$heading] = array();
1128                                 }
1129                         } else {
1130                                 $line = trim( $line, '* ' );
1131
1132                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1133                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1134                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1135                                         $extraAttribs = array();
1136
1137                                         $msgLink = wfMessage( $line[0] )->inContentLanguage();
1138                                         if ( $msgLink->exists() ) {
1139                                                 $link = $msgLink->text();
1140                                                 if ( $link == '-' ) {
1141                                                         continue;
1142                                                 }
1143                                         } else {
1144                                                 $link = $line[0];
1145                                         }
1146
1147                                         $msgText = wfMessage( $line[1] );
1148                                         if ( $msgText->exists() ) {
1149                                                 $text = $msgText->text();
1150                                         } else {
1151                                                 $text = $line[1];
1152                                         }
1153
1154                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1155                                                 $href = $link;
1156                                                 //Parser::getExternalLinkAttribs won't work here because of the Namespace things
1157                                                 global $wgNoFollowLinks;
1158                                                 if ( $wgNoFollowLinks ) {
1159                                                         $extraAttribs['rel'] = 'nofollow';
1160
1161                                                         global $wgNoFollowDomainExceptions;
1162                                                         if ( $wgNoFollowDomainExceptions ) {
1163                                                                 $bits = wfParseUrl( $url );
1164                                                                 if ( is_array( $bits ) && isset( $bits['host'] ) ) {
1165                                                                         foreach ( $wgNoFollowDomainExceptions as $domain ) {
1166                                                                                 if ( substr( $bits['host'], -strlen( $domain ) ) == $domain ) {
1167                                                                                         unset( $extraAttribs['rel'] );
1168                                                                                         break;
1169                                                                                 }
1170                                                                         }
1171                                                                 }
1172                                                         }
1173                                                 }
1174                                                 global $wgExternalLinkTarget;
1175                                                 if ( $wgExternalLinkTarget) {
1176                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1177                                                 }
1178                                         } else {
1179                                                 $title = Title::newFromText( $link );
1180
1181                                                 if ( $title ) {
1182                                                         $title = $title->fixSpecialName();
1183                                                         $href = $title->getLocalURL();
1184                                                 } else {
1185                                                         $href = 'INVALID-TITLE';
1186                                                 }
1187                                         }
1188
1189                                         $bar[$heading][] = array_merge( array(
1190                                                 'text' => $text,
1191                                                 'href' => $href,
1192                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1193                                                 'active' => false
1194                                         ), $extraAttribs );
1195                                 } elseif ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
1196                                         global $wgParser;
1197
1198                                         $line = substr( $line, 2, strlen( $line ) - 4 );
1199
1200                                         $options = new ParserOptions();
1201                                         $options->setEditSection( false );
1202                                         $options->setInterfaceMessage( true );
1203                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $this->getTitle(), $options )->getText();
1204                                 } else {
1205                                         continue;
1206                                 }
1207                         }
1208                 }
1209
1210                 if ( count( $wikiBar ) > 0 ) {
1211                         $bar = array_merge( $bar, $wikiBar );
1212                 }
1213
1214                 return $bar;
1215         }
1216
1217         /**
1218          * Should we include common/wikiprintable.css?  Skins that have their own
1219          * print stylesheet should override this and return false.  (This is an
1220          * ugly hack to get Monobook to play nicely with
1221          * OutputPage::headElement().)
1222          *
1223          * @return bool
1224          */
1225         public function commonPrintStylesheet() {
1226                 return true;
1227         }
1228
1229         /**
1230          * Gets new talk page messages for the current user.
1231          * @return MediaWiki message or if no new talk page messages, nothing
1232          */
1233         function getNewtalks() {
1234                 $out = $this->getOutput();
1235
1236                 $newtalks = $this->getUser()->getNewMessageLinks();
1237                 $ntl = '';
1238
1239                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1240                         $userTitle = $this->getUser()->getUserPage();
1241                         $userTalkTitle = $userTitle->getTalkPage();
1242
1243                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1244                                 $newMessagesLink = Linker::linkKnown(
1245                                         $userTalkTitle,
1246                                         wfMsgHtml( 'newmessageslink' ),
1247                                         array(),
1248                                         array( 'redirect' => 'no' )
1249                                 );
1250
1251                                 $newMessagesDiffLink = Linker::linkKnown(
1252                                         $userTalkTitle,
1253                                         wfMsgHtml( 'newmessagesdifflink' ),
1254                                         array(),
1255                                         array( 'diff' => 'cur' )
1256                                 );
1257
1258                                 $ntl = wfMsg(
1259                                         'youhavenewmessages',
1260                                         $newMessagesLink,
1261                                         $newMessagesDiffLink
1262                                 );
1263                                 # Disable Squid cache
1264                                 $out->setSquidMaxage( 0 );
1265                         }
1266                 } elseif ( count( $newtalks ) ) {
1267                         // _>" " for BC <= 1.16
1268                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
1269                         $msgs = array();
1270
1271                         foreach ( $newtalks as $newtalk ) {
1272                                 $msgs[] = Xml::element(
1273                                         'a',
1274                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1275                                 );
1276                         }
1277                         $parts = implode( $sep, $msgs );
1278                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
1279                         $out->setSquidMaxage( 0 );
1280                 }
1281
1282                 return $ntl;
1283         }
1284
1285         /**
1286          * Get a cached notice
1287          *
1288          * @param $name String: message name, or 'default' for $wgSiteNotice
1289          * @return String: HTML fragment
1290          */
1291         private function getCachedNotice( $name ) {
1292                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1293
1294                 wfProfileIn( __METHOD__ );
1295
1296                 $needParse = false;
1297
1298                 if( $name === 'default' ) {
1299                         // special case
1300                         global $wgSiteNotice;
1301                         $notice = $wgSiteNotice;
1302                         if( empty( $notice ) ) {
1303                                 wfProfileOut( __METHOD__ );
1304                                 return false;
1305                         }
1306                 } else {
1307                         $msg = wfMessage( $name )->inContentLanguage();
1308                         if( $msg->isDisabled() ) {
1309                                 wfProfileOut( __METHOD__ );
1310                                 return false;
1311                         }
1312                         $notice = $msg->plain();
1313                 }
1314
1315                 // Use the extra hash appender to let eg SSL variants separately cache.
1316                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1317                 $cachedNotice = $parserMemc->get( $key );
1318                 if( is_array( $cachedNotice ) ) {
1319                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1320                                 $notice = $cachedNotice['html'];
1321                         } else {
1322                                 $needParse = true;
1323                         }
1324                 } else {
1325                         $needParse = true;
1326                 }
1327
1328                 if ( $needParse ) {
1329                         $parsed = $this->getOutput()->parse( $notice );
1330                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1331                         $notice = $parsed;
1332                 }
1333
1334                 $notice = Html::rawElement( 'div', array( 'id' => 'localNotice',
1335                         'lang' => $wgContLang->getCode(), 'dir' => $wgContLang->getDir() ), $notice );
1336                 wfProfileOut( __METHOD__ );
1337                 return $notice;
1338         }
1339
1340         /**
1341          * Get a notice based on page's namespace
1342          *
1343          * @return String: HTML fragment
1344          */
1345         function getNamespaceNotice() {
1346                 wfProfileIn( __METHOD__ );
1347
1348                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1349                 $namespaceNotice = $this->getCachedNotice( $key );
1350                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1351                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1352                 } else {
1353                         $namespaceNotice = '';
1354                 }
1355
1356                 wfProfileOut( __METHOD__ );
1357                 return $namespaceNotice;
1358         }
1359
1360         /**
1361          * Get the site notice
1362          *
1363          * @return String: HTML fragment
1364          */
1365         function getSiteNotice() {
1366                 wfProfileIn( __METHOD__ );
1367                 $siteNotice = '';
1368
1369                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1370                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1371                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1372                         } else {
1373                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1374                                 if ( !$anonNotice ) {
1375                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1376                                 } else {
1377                                         $siteNotice = $anonNotice;
1378                                 }
1379                         }
1380                         if ( !$siteNotice ) {
1381                                 $siteNotice = $this->getCachedNotice( 'default' );
1382                         }
1383                 }
1384
1385                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1386                 wfProfileOut( __METHOD__ );
1387                 return $siteNotice;
1388         }
1389
1390         /**
1391          * Create a section edit link.  This supersedes editSectionLink() and
1392          * editSectionLinkForOther().
1393          *
1394          * @param $nt      Title  The title being linked to (may not be the same as
1395          *   $wgTitle, if the section is included from a template)
1396          * @param $section string The designation of the section being pointed to,
1397          *   to be included in the link, like "&section=$section"
1398          * @param $tooltip string The tooltip to use for the link: will be escaped
1399          *   and wrapped in the 'editsectionhint' message
1400          * @param $lang    string Language code
1401          * @return         string HTML to use for edit link
1402          */
1403         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1404                 // HTML generated here should probably have userlangattributes
1405                 // added to it for LTR text on RTL pages
1406                 $attribs = array();
1407                 if ( !is_null( $tooltip ) ) {
1408                         # Bug 25462: undo double-escaping.
1409                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1410                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1411                 }
1412                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1413                         $attribs,
1414                         array( 'action' => 'edit', 'section' => $section ),
1415                         array( 'noclasses', 'known' )
1416                 );
1417
1418                 # Run the old hook.  This takes up half of the function . . . hopefully
1419                 # we can rid of it someday.
1420                 $attribs = '';
1421                 if ( $tooltip ) {
1422                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1423                         $attribs = " title=\"$attribs\"";
1424                 }
1425                 $result = null;
1426                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1427                 if ( !is_null( $result ) ) {
1428                         # For reverse compatibility, add the brackets *after* the hook is
1429                         # run, and even add them to hook-provided text.  (This is the main
1430                         # reason that the EditSectionLink hook is deprecated in favor of
1431                         # DoEditSectionLink: it can't change the brackets or the span.)
1432                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1433                         return "<span class=\"editsection\">$result</span>";
1434                 }
1435
1436                 # Add the brackets and the span, and *then* run the nice new hook, with
1437                 # clean and non-redundant arguments.
1438                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1439                 $result = "<span class=\"editsection\">$result</span>";
1440
1441                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1442                 return $result;
1443         }
1444
1445         /**
1446          * Use PHP's magic __call handler to intercept legacy calls to the linker
1447          * for backwards compatibility.
1448          *
1449          * @param $fname String Name of called method
1450          * @param $args Array Arguments to the method
1451          */
1452         function __call( $fname, $args ) {
1453                 $realFunction = array( 'Linker', $fname );
1454                 if ( is_callable( $realFunction ) ) {
1455                         return call_user_func_array( $realFunction, $args );
1456                 } else {
1457                         $className = get_class( $this );
1458                         throw new MWException( "Call to undefined method $className::$fname" );
1459                 }
1460         }
1461
1462 }