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 path to the skin stylesheet */
 164         function getStylesheet() {
 165                 return 'common/wikistandard.css';
 166         }
 167
 168         /** @return string skin name */
 169         public function getSkinName() {
 170                 return $this->skinname;
 171         }
 172
 173         function initPage( OutputPage $out ) {
 174                 wfProfileIn( __METHOD__ );
 175
 176                 $this->preloadExistence();
 177                 $this->setMembers();
 178
 179                 wfProfileOut( __METHOD__ );
 180         }
 181
 182         /**
 183          * Preload the existence of three commonly-requested pages in a single query
 184          */
 185         function preloadExistence() {
 186                 $user = $this->getUser();
 187
 188                 // User/talk link
 189                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 190
 191                 // Other tab link
 192                 if ( $this->getTitle()->getNamespace() == NS_SPECIAL ) {
 193                         // nothing
 194                 } elseif ( $this->getTitle()->isTalkPage() ) {
 195                         $titles[] = $this->getTitle()->getSubjectPage();
 196                 } else {
 197                         $titles[] = $this->getTitle()->getTalkPage();
 198                 }
 199
 200                 $lb = new LinkBatch( $titles );
 201                 $lb->setCaller( __METHOD__ );
 202                 $lb->execute();
 203         }
 204
 205         /**
 206          * Set some local variables
 207          */
 208         protected function setMembers() {
 209                 $this->userpage = $this->getUser()->getUserPage()->getPrefixedText();
 210         }
 211
 212         /**
 213          * Get the current revision ID
 214          *
 215          * @return Integer
 216          */
 217         public function getRevisionId() {
 218                 return $this->getOutput()->getRevisionId();
 219         }
 220
 221         /**
 222          * Whether the revision displayed is the latest revision of the page
 223          *
 224          * @return Boolean
 225          */
 226         public function isRevisionCurrent() {
 227                 $revID = $this->getRevisionId();
 228                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 229         }
 230
 231         /**
 232          * Set the "relevant" title
 233          * @see self::getRelevantTitle()
 234          * @param $t Title object to use
 235          */
 236         public function setRelevantTitle( $t ) {
 237                 $this->mRelevantTitle = $t;
 238         }
 239
 240         /**
 241          * Return the "relevant" title.
 242          * A "relevant" title is not necessarily the actual title of the page.
 243          * Special pages like Special:MovePage use set the page they are acting on
 244          * as their "relevant" title, this allows the skin system to display things
 245          * such as content tabs which belong to to that page instead of displaying
 246          * a basic special page tab which has almost no meaning.
 247          *
 248          * @return Title
 249          */
 250         public function getRelevantTitle() {
 251                 if ( isset($this->mRelevantTitle) ) {
 252                         return $this->mRelevantTitle;
 253                 }
 254                 return $this->getTitle();
 255         }
 256
 257         /**
 258          * Set the "relevant" user
 259          * @see self::getRelevantUser()
 260          * @param $u User object to use
 261          */
 262         public function setRelevantUser( $u ) {
 263                 $this->mRelevantUser = $u;
 264         }
 265
 266         /**
 267          * Return the "relevant" user.
 268          * A "relevant" user is similar to a relevant title. Special pages like
 269          * Special:Contributions mark the user which they are relevant to so that
 270          * things like the toolbox can display the information they usually are only
 271          * able to display on a user's userpage and talkpage.
 272          * @return User
 273          */
 274         public function getRelevantUser() {
 275                 if ( isset($this->mRelevantUser) ) {
 276                         return $this->mRelevantUser;
 277                 }
 278                 $title = $this->getRelevantTitle();
 279                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 280                         $rootUser = strtok( $title->getText(), '/' );
 281                         if ( User::isIP( $rootUser ) ) {
 282                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 283                         } else {
 284                                 $user = User::newFromName( $rootUser );
 285                                 if ( $user->isLoggedIn() ) {
 286                                         $this->mRelevantUser = $user;
 287                                 }
 288                         }
 289                         return $this->mRelevantUser;
 290                 }
 291                 return null;
 292         }
 293
 294         /**
 295          * Outputs the HTML generated by other functions.
 296          * @param $out OutputPage
 297          */
 298         abstract function outputPage( OutputPage $out );
 299
 300         static function makeVariablesScript( $data ) {
 301                 if ( $data ) {
 302                         return Html::inlineScript(
 303                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 304                         );
 305                 } else {
 306                         return '';
 307                 }
 308         }
 309
 310         /**
 311          * Generated JavaScript action=raw&gen=js
 312          * This used to load MediaWiki:Common.js and the skin-specific style
 313          * before the ResourceLoader.
 314          *
 315          * @deprecated since 1.18 Use the ResourceLoader instead. This may be removed at some
 316          * point.
 317          * @param $skinName String: If set, overrides the skin name
 318          * @return String
 319          */
 320         public function generateUserJs( $skinName = null ) {
 321                 return '';
 322         }
 323
 324         /**
 325          * Generate user stylesheet for action=raw&gen=css
 326          *
 327          * @deprecated since 1.18 Use the ResourceLoader instead. This may be removed at some
 328          * point.
 329          * @return String
 330          */
 331         public function generateUserStylesheet() {
 332                 return '';
 333         }
 334
 335         /**
 336          * Get the query to generate a dynamic stylesheet
 337          *
 338          * @return array
 339          */
 340         public static function getDynamicStylesheetQuery() {
 341                 global $wgSquidMaxage;
 342
 343                 return array(
 344                                 'action' => 'raw',
 345                                 'maxage' => $wgSquidMaxage,
 346                                 'usemsgcache' => 'yes',
 347                                 'ctype' => 'text/css',
 348                                 'smaxage' => $wgSquidMaxage,
 349                         );
 350         }
 351
 352         /**
 353          * Add skin specific stylesheets
 354          * Calling this method with an $out of anything but the same OutputPage
 355          * inside ->getOutput() is deprecated. The $out arg is kept
 356          * for compatibility purposes with skins.
 357          * @param $out OutputPage
 358          * @delete
 359          */
 360         abstract function setupSkinUserCss( OutputPage $out );
 361
 362         /**
 363          * TODO: document
 364          * @param $title Title
 365          * @return String
 366          */
 367         function getPageClasses( $title ) {
 368                 global $wgRequest;
 369                 $numeric = 'ns-' . $title->getNamespace();
 370
 371                 if ( $title->getNamespace() == NS_SPECIAL ) {
 372                         $type = 'ns-special';
 373                         // bug 23315: provide a class based on the canonical special page name without subpages
 374                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 375                         if ( $canonicalName ) {
 376                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 377                         } else {
 378                                 $type .= ' mw-invalidspecialpage';
 379                         }
 380                 } elseif ( $title->isTalkPage() ) {
 381                         $type = 'ns-talk';
 382                 } else {
 383                         $type = 'ns-subject';
 384                 }
 385
 386                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 387
 388                 if ( $wgRequest->getVal('action') ) {
 389                         $action = 'action-' . $wgRequest->getVal('action');
 390                 } else {
 391                         $action = 'action-view';
 392                 }
 393                 return "$numeric $type $name $action";
 394         }
 395
 396         /**
 397          * This will be called by OutputPage::headElement when it is creating the
 398          * <body> tag, skins can override it if they have a need to add in any
 399          * body attributes or classes of their own.
 400          * @param $out OutputPage
 401          * @param $bodyAttrs Array
 402          */
 403         function addToBodyAttributes( $out, &$bodyAttrs ) {
 404                 // does nothing by default
 405         }
 406
 407         /**
 408          * URL to the logo
 409          * @return String
 410          */
 411         function getLogo() {
 412                 global $wgLogo;
 413                 return $wgLogo;
 414         }
 415
 416         function getCategoryLinks() {
 417                 global $wgUseCategoryBrowser;
 418
 419                 $out = $this->getOutput();
 420
 421                 if ( count( $out->mCategoryLinks ) == 0 ) {
 422                         return '';
 423                 }
 424
 425                 $embed = "<li>";
 426                 $pop = "</li>";
 427
 428                 $allCats = $out->getCategoryLinks();
 429                 $s = '';
 430                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 431
 432                 if ( !empty( $allCats['normal'] ) ) {
 433                         $t = $embed . implode( "{$pop}{$embed}" , $allCats['normal'] ) . $pop;
 434
 435                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 436                         $s .= '<div id="mw-normal-catlinks">' .
 437                                 Linker::link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 438                                 . $colon . '<ul>' . $t . '</ul>' . '</div>';
 439                 }
 440
 441                 # Hidden categories
 442                 if ( isset( $allCats['hidden'] ) ) {
 443                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 444                                 $class = 'mw-hidden-cats-user-shown';
 445                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 446                                 $class = 'mw-hidden-cats-ns-shown';
 447                         } else {
 448                                 $class = 'mw-hidden-cats-hidden';
 449                         }
 450
 451                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 452                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 453                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}" , $allCats['hidden'] ) . $pop . '</ul>' .
 454                                 '</div>';
 455                 }
 456
 457                 # optional 'dmoz-like' category browser. Will be shown under the list
 458                 # of categories an article belong to
 459                 if ( $wgUseCategoryBrowser ) {
 460                         $s .= '<br /><hr />';
 461
 462                         # get a big array of the parents tree
 463                         $parenttree = $this->getTitle()->getParentCategoryTree();
 464                         # Skin object passed by reference cause it can not be
 465                         # accessed under the method subfunction drawCategoryBrowser
 466                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 467                         # Clean out bogus first entry and sort them
 468                         unset( $tempout[0] );
 469                         asort( $tempout );
 470                         # Output one per line
 471                         $s .= implode( "<br />\n", $tempout );
 472                 }
 473
 474                 return $s;
 475         }
 476
 477         /**
 478          * Render the array as a serie of links.
 479          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 480          * @return String separated by &gt;, terminate with "\n"
 481          */
 482         function drawCategoryBrowser( $tree ) {
 483                 $return = '';
 484
 485                 foreach ( $tree as $element => $parent ) {
 486                         if ( empty( $parent ) ) {
 487                                 # element start a new list
 488                                 $return .= "\n";
 489                         } else {
 490                                 # grab the others elements
 491                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 492                         }
 493
 494                         # add our current element to the list
 495                         $eltitle = Title::newFromText( $element );
 496                         $return .=  Linker::link( $eltitle, $eltitle->getText() );
 497                 }
 498
 499                 return $return;
 500         }
 501
 502         function getCategories() {
 503                 $out = $this->getOutput();
 504
 505                 $catlinks = $this->getCategoryLinks();
 506
 507                 $classes = 'catlinks';
 508
 509                 // Check what we're showing
 510                 $allCats = $out->getCategoryLinks();
 511                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 512                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 513
 514                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 515                         $classes .= ' catlinks-allhidden';
 516                 }
 517
 518                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 519         }
 520
 521         /**
 522          * This runs a hook to allow extensions placing their stuff after content
 523          * and article metadata (e.g. categories).
 524          * Note: This function has nothing to do with afterContent().
 525          *
 526          * This hook is placed here in order to allow using the same hook for all
 527          * skins, both the SkinTemplate based ones and the older ones, which directly
 528          * use this class to get their data.
 529          *
 530          * The output of this function gets processed in SkinTemplate::outputPage() for
 531          * the SkinTemplate based skins, all other skins should directly echo it.
 532          *
 533          * @return String, empty by default, if not changed by any hook function.
 534          */
 535         protected function afterContentHook() {
 536                 $data = '';
 537
 538                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 539                         // adding just some spaces shouldn't toggle the output
 540                         // of the whole <div/>, so we use trim() here
 541                         if ( trim( $data ) != '' ) {
 542                                 // Doing this here instead of in the skins to
 543                                 // ensure that the div has the same ID in all
 544                                 // skins
 545                                 $data = "<div id='mw-data-after-content'>\n" .
 546                                         "\t$data\n" .
 547                                         "</div>\n";
 548                         }
 549                 } else {
 550                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 551                 }
 552
 553                 return $data;
 554         }
 555
 556         /**
 557          * Generate debug data HTML for displaying at the bottom of the main content
 558          * area.
 559          * @return String HTML containing debug data, if enabled (otherwise empty).
 560          */
 561         protected function generateDebugHTML() {
 562                 global $wgShowDebug;
 563
 564                 if ( $wgShowDebug ) {
 565                         $listInternals = $this->formatDebugHTML( $this->getOutput()->mDebugtext );
 566                         return "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 567                                 $listInternals . "</ul>\n";
 568                 }
 569
 570                 return '';
 571         }
 572
 573         private function formatDebugHTML( $debugText ) {
 574                 global $wgDebugTimestamps;
 575
 576                 $lines = explode( "\n", $debugText );
 577                 $curIdent = 0;
 578                 $ret = '<li>';
 579
 580                 foreach ( $lines as $line ) {
 581                         $pre = '';
 582                         if ( $wgDebugTimestamps ) {
 583                                 $matches = array();
 584                                 if ( preg_match( '/^(\d+\.\d+\s{2})/', $line, $matches ) ) {
 585                                         $pre = $matches[1];
 586                                         $line = substr( $line, strlen( $pre ) );
 587                                 }
 588                         }
 589                         $display = ltrim( $line );
 590                         $ident = strlen( $line ) - strlen( $display );
 591                         $diff = $ident - $curIdent;
 592
 593                         $display = $pre . $display;
 594                         if ( $display == '' ) {
 595                                 $display = "\xc2\xa0";
 596                         }
 597
 598                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 599                                 $ident = $curIdent;
 600                                 $diff = 0;
 601                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 602                         } else {
 603                                 $display = htmlspecialchars( $display );
 604                         }
 605
 606                         if ( $diff < 0 ) {
 607                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 608                         } elseif ( $diff == 0 ) {
 609                                 $ret .= "</li><li>\n";
 610                         } else {
 611                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 612                         }
 613                         $ret .= "<tt>$display</tt>\n";
 614
 615                         $curIdent = $ident;
 616                 }
 617
 618                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 619
 620                 return $ret;
 621         }
 622
 623         /**
 624          * This gets called shortly before the </body> tag.
 625          * @param $out OutputPage object
 626          * @return String HTML-wrapped JS code to be put before </body>
 627          */
 628         function bottomScripts( $out ) {
 629                 // TODO and the suckage continues. This function is really just a wrapper around
 630                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 631                 // up at some point
 632                 $bottomScriptText = $out->getBottomScripts();
 633                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 634
 635                 return $bottomScriptText;
 636         }
 637
 638         /** @return string Retrievied from HTML text */
 639         function printSource() {
 640                 $url = htmlspecialchars( $this->getTitle()->getFullURL() );
 641                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 642         }
 643
 644         function getUndeleteLink() {
 645                 $action = $this->getRequest()->getVal( 'action', 'view' );
 646
 647                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) &&
 648                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 649
 650                         $includeSuppressed = $this->getUser()->isAllowed( 'suppressrevision' );
 651                         $n = $this->getTitle()->isDeleted( $includeSuppressed );
 652
 653                         if ( $n ) {
 654                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 655                                         $msg = 'thisisdeleted';
 656                                 } else {
 657                                         $msg = 'viewdeleted';
 658                                 }
 659
 660                                 return wfMsg(
 661                                         $msg,
 662                                         Linker::link(
 663                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 664                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $this->getLang()->formatNum( $n ) ),
 665                                                 array(),
 666                                                 array(),
 667                                                 array( 'known', 'noclasses' )
 668                                         )
 669                                 );
 670                         }
 671                 }
 672
 673                 return '';
 674         }
 675
 676         function subPageSubtitle() {
 677                 $out = $this->getOutput();
 678                 $subpages = '';
 679
 680                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 681                         return $subpages;
 682                 }
 683
 684                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 685                         $ptext = $this->getTitle()->getPrefixedText();
 686                         if ( preg_match( '/\//', $ptext ) ) {
 687                                 $links = explode( '/', $ptext );
 688                                 array_pop( $links );
 689                                 $c = 0;
 690                                 $growinglink = '';
 691                                 $display = '';
 692
 693                                 foreach ( $links as $link ) {
 694                                         $growinglink .= $link;
 695                                         $display .= $link;
 696                                         $linkObj = Title::newFromText( $growinglink );
 697
 698                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 699                                                 $getlink = $this->link(
 700                                                         $linkObj,
 701                                                         htmlspecialchars( $display ),
 702                                                         array(),
 703                                                         array(),
 704                                                         array( 'known', 'noclasses' )
 705                                                 );
 706
 707                                                 $c++;
 708
 709                                                 if ( $c > 1 ) {
 710                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
 711                                                 } else  {
 712                                                         $subpages .= '&lt; ';
 713                                                 }
 714
 715                                                 $subpages .= $getlink;
 716                                                 $display = '';
 717                                         } else {
 718                                                 $display .= '/';
 719                                         }
 720                                         $growinglink .= '/';
 721                                 }
 722                         }
 723                 }
 724
 725                 return $subpages;
 726         }
 727
 728         /**
 729          * Returns true if the IP should be shown in the header
 730          * @return Bool
 731          */
 732         function showIPinHeader() {
 733                 global $wgShowIPinHeader;
 734                 return $wgShowIPinHeader && session_id() != '';
 735         }
 736
 737         function getSearchLink() {
 738                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 739                 return $searchPage->getLocalURL();
 740         }
 741
 742         function escapeSearchLink() {
 743                 return htmlspecialchars( $this->getSearchLink() );
 744         }
 745
 746         function getCopyright( $type = 'detect' ) {
 747                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 748
 749                 if ( $type == 'detect' ) {
 750                         $diff = $this->getRequest()->getVal( 'diff' );
 751
 752                         if ( is_null( $diff ) && !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 753                                 $type = 'history';
 754                         } else {
 755                                 $type = 'normal';
 756                         }
 757                 }
 758
 759                 if ( $type == 'history' ) {
 760                         $msg = 'history_copyright';
 761                 } else {
 762                         $msg = 'copyright';
 763                 }
 764
 765                 $out = '';
 766
 767                 if ( $wgRightsPage ) {
 768                         $title = Title::newFromText( $wgRightsPage );
 769                         $link = Linker::linkKnown( $title, $wgRightsText );
 770                 } elseif ( $wgRightsUrl ) {
 771                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 772                 } elseif ( $wgRightsText ) {
 773                         $link = $wgRightsText;
 774                 } else {
 775                         # Give up now
 776                         return $out;
 777                 }
 778
 779                 // Allow for site and per-namespace customization of copyright notice.
 780                 $forContent = true;
 781
 782                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 783
 784                 if ( $forContent ) {
 785                         $out .= wfMsgForContent( $msg, $link );
 786                 } else {
 787                         $out .= wfMsg( $msg, $link );
 788                 }
 789
 790                 return $out;
 791         }
 792
 793         function getCopyrightIcon() {
 794                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 795
 796                 $out = '';
 797
 798                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 799                         $out = $wgCopyrightIcon;
 800                 } elseif ( $wgRightsIcon ) {
 801                         $icon = htmlspecialchars( $wgRightsIcon );
 802
 803                         if ( $wgRightsUrl ) {
 804                                 $url = htmlspecialchars( $wgRightsUrl );
 805                                 $out .= '<a href="' . $url . '">';
 806                         }
 807
 808                         $text = htmlspecialchars( $wgRightsText );
 809                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 810
 811                         if ( $wgRightsUrl ) {
 812                                 $out .= '</a>';
 813                         }
 814                 }
 815
 816                 return $out;
 817         }
 818
 819         /**
 820          * Gets the powered by MediaWiki icon.
 821          * @return string
 822          */
 823         function getPoweredBy() {
 824                 global $wgStylePath;
 825
 826                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 827                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 828                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 829                 return $text;
 830         }
 831
 832         /**
 833          * Get the timestamp of the latest revision, formatted in user language
 834          *
 835          * @param $article Article object. Used if we're working with the current revision
 836          * @return String
 837          */
 838         protected function lastModified( $article ) {
 839                 if ( !$this->isRevisionCurrent() ) {
 840                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 841                 } else {
 842                         $timestamp = $article->getTimestamp();
 843                 }
 844
 845                 if ( $timestamp ) {
 846                         $d = $this->getLang()->date( $timestamp, true );
 847                         $t = $this->getLang()->time( $timestamp, true );
 848                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
 849                 } else {
 850                         $s = '';
 851                 }
 852
 853                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 854                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
 855                 }
 856
 857                 return $s;
 858         }
 859
 860         function logoText( $align = '' ) {
 861                 if ( $align != '' ) {
 862                         $a = " align='{$align}'";
 863                 } else {
 864                         $a = '';
 865                 }
 866
 867                 $mp = wfMsg( 'mainpage' );
 868                 $mptitle = Title::newMainPage();
 869                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
 870
 871                 $logourl = $this->getLogo();
 872                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 873
 874                 return $s;
 875         }
 876
 877         /**
 878          * Renders a $wgFooterIcons icon acording to the method's arguments
 879          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
 880          * @param $withImage Bool|String: Whether to use the icon's image or output a text-only footericon
 881          * @return String HTML
 882          */
 883         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 884                 if ( is_string( $icon ) ) {
 885                         $html = $icon;
 886                 } else { // Assuming array
 887                         $url = isset($icon["url"]) ? $icon["url"] : null;
 888                         unset( $icon["url"] );
 889                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 890                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
 891                         } else {
 892                                 $html = htmlspecialchars( $icon["alt"] );
 893                         }
 894                         if ( $url ) {
 895                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
 896                         }
 897                 }
 898                 return $html;
 899         }
 900
 901         /**
 902          * Gets the link to the wiki's main page.
 903          * @return string
 904          */
 905         function mainPageLink() {
 906                 $s = Linker::link(
 907                         Title::newMainPage(),
 908                         wfMsg( 'mainpage' ),
 909                         array(),
 910                         array(),
 911                         array( 'known', 'noclasses' )
 912                 );
 913
 914                 return $s;
 915         }
 916
 917         public function footerLink( $desc, $page ) {
 918                 // if the link description has been set to "-" in the default language,
 919                 if ( wfMsgForContent( $desc )  == '-' ) {
 920                         // then it is disabled, for all languages.
 921                         return '';
 922                 } else {
 923                         // Otherwise, we display the link for the user, described in their
 924                         // language (which may or may not be the same as the default language),
 925                         // but we make the link target be the one site-wide page.
 926                         $title = Title::newFromText( wfMsgForContent( $page ) );
 927
 928                         return Linker::linkKnown(
 929                                 $title,
 930                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
 931                         );
 932                 }
 933         }
 934
 935         /**
 936          * Gets the link to the wiki's privacy policy page.
 937          * @return String HTML
 938          */
 939         function privacyLink() {
 940                 return $this->footerLink( 'privacy', 'privacypage' );
 941         }
 942
 943         /**
 944          * Gets the link to the wiki's about page.
 945          * @return String HTML
 946          */
 947         function aboutLink() {
 948                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 949         }
 950
 951         /**
 952          * Gets the link to the wiki's general disclaimers page.
 953          * @return String HTML
 954          */
 955         function disclaimerLink() {
 956                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
 957         }
 958
 959         /**
 960          * Return URL options for the 'edit page' link.
 961          * This may include an 'oldid' specifier, if the current page view is such.
 962          *
 963          * @return array
 964          * @private
 965          */
 966         function editUrlOptions() {
 967                 $options = array( 'action' => 'edit' );
 968
 969                 if ( !$this->isRevisionCurrent() ) {
 970                         $options['oldid'] = intval( $this->getRevisionId() );
 971                 }
 972
 973                 return $options;
 974         }
 975
 976         function showEmailUser( $id ) {
 977                 $targetUser = User::newFromId( $id );
 978                 return $this->getUser()->canSendEmail() && # the sending user must have a confirmed email address
 979                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
 980         }
 981
 982         /**
 983          * Return a fully resolved style path url to images or styles stored in the common folder.
 984          * This method returns a url resolved using the configured skin style path
 985          * and includes the style version inside of the url.
 986          * @param $name String: The name or path of a skin resource file
 987          * @return String The fully resolved style path url including styleversion
 988          */
 989         function getCommonStylePath( $name ) {
 990                 global $wgStylePath, $wgStyleVersion;
 991                 return "$wgStylePath/common/$name?$wgStyleVersion";
 992         }
 993
 994         /**
 995          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
 996          * This method returns a url resolved using the configured skin style path
 997          * and includes the style version inside of the url.
 998          * @param $name String: The name or path of a skin resource file
 999          * @return String The fully resolved style path url including styleversion
1000          */
1001         function getSkinStylePath( $name ) {
1002                 global $wgStylePath, $wgStyleVersion;
1003                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1004         }
1005
1006         /* these are used extensively in SkinTemplate, but also some other places */
1007         static function makeMainPageUrl( $urlaction = '' ) {
1008                 $title = Title::newMainPage();
1009                 self::checkTitle( $title, '' );
1010
1011                 return $title->getLocalURL( $urlaction );
1012         }
1013
1014         static function makeSpecialUrl( $name, $urlaction = '' ) {
1015                 $title = SpecialPage::getSafeTitleFor( $name );
1016                 return $title->getLocalURL( $urlaction );
1017         }
1018
1019         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1020                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1021                 return $title->getLocalURL( $urlaction );
1022         }
1023
1024         static function makeI18nUrl( $name, $urlaction = '' ) {
1025                 $title = Title::newFromText( wfMsgForContent( $name ) );
1026                 self::checkTitle( $title, $name );
1027                 return $title->getLocalURL( $urlaction );
1028         }
1029
1030         static function makeUrl( $name, $urlaction = '' ) {
1031                 $title = Title::newFromText( $name );
1032                 self::checkTitle( $title, $name );
1033
1034                 return $title->getLocalURL( $urlaction );
1035         }
1036
1037         /**
1038          * If url string starts with http, consider as external URL, else
1039          * internal
1040          * @param $name String
1041          * @return String URL
1042          */
1043         static function makeInternalOrExternalUrl( $name ) {
1044                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1045                         return $name;
1046                 } else {
1047                         return self::makeUrl( $name );
1048                 }
1049         }
1050
1051         # this can be passed the NS number as defined in Language.php
1052         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1053                 $title = Title::makeTitleSafe( $namespace, $name );
1054                 self::checkTitle( $title, $name );
1055
1056                 return $title->getLocalURL( $urlaction );
1057         }
1058
1059         /* these return an array with the 'href' and boolean 'exists' */
1060         static function makeUrlDetails( $name, $urlaction = '' ) {
1061                 $title = Title::newFromText( $name );
1062                 self::checkTitle( $title, $name );
1063
1064                 return array(
1065                         'href' => $title->getLocalURL( $urlaction ),
1066                         'exists' => $title->getArticleID() != 0,
1067                 );
1068         }
1069
1070         /**
1071          * Make URL details where the article exists (or at least it's convenient to think so)
1072          * @param $name String Article name
1073          * @param $urlaction String
1074          * @return Array
1075          */
1076         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1077                 $title = Title::newFromText( $name );
1078                 self::checkTitle( $title, $name );
1079
1080                 return array(
1081                         'href' => $title->getLocalURL( $urlaction ),
1082                         'exists' => true
1083                 );
1084         }
1085
1086         # make sure we have some title to operate on
1087         static function checkTitle( &$title, $name ) {
1088                 if ( !is_object( $title ) ) {
1089                         $title = Title::newFromText( $name );
1090                         if ( !is_object( $title ) ) {
1091                                 $title = Title::newFromText( '--error: link target missing--' );
1092                         }
1093                 }
1094         }
1095
1096         /**
1097          * Build an array that represents the sidebar(s), the navigation bar among them
1098          *
1099          * @return array
1100          */
1101         function buildSidebar() {
1102                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1103                 wfProfileIn( __METHOD__ );
1104
1105                 $key = wfMemcKey( 'sidebar', $this->getLang()->getCode() );
1106
1107                 if ( $wgEnableSidebarCache ) {
1108                         $cachedsidebar = $parserMemc->get( $key );
1109                         if ( $cachedsidebar ) {
1110                                 wfProfileOut( __METHOD__ );
1111                                 return $cachedsidebar;
1112                         }
1113                 }
1114
1115                 $bar = array();
1116                 $this->addToSidebar( $bar, 'sidebar' );
1117
1118                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1119                 if ( $wgEnableSidebarCache ) {
1120                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1121                 }
1122
1123                 wfProfileOut( __METHOD__ );
1124                 return $bar;
1125         }
1126         /**
1127          * Add content from a sidebar system message
1128          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1129          *
1130          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1131          *
1132          * @param &$bar array
1133          * @param $message String
1134          */
1135         function addToSidebar( &$bar, $message ) {
1136                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1137         }
1138
1139         /**
1140          * Add content from plain text
1141          * @since 1.17
1142          * @param &$bar array
1143          * @param $text string
1144          * @return Array
1145          */
1146         function addToSidebarPlain( &$bar, $text ) {
1147                 $lines = explode( "\n", $text );
1148                 $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.
1149
1150                 $heading = '';
1151
1152                 foreach ( $lines as $line ) {
1153                         if ( strpos( $line, '*' ) !== 0 ) {
1154                                 continue;
1155                         }
1156
1157                         if ( strpos( $line, '**' ) !== 0 ) {
1158                                 $heading = trim( $line, '* ' );
1159                                 if ( !array_key_exists( $heading, $bar ) ) {
1160                                         $bar[$heading] = array();
1161                                 }
1162                         } else {
1163                                 $line = trim( $line, '* ' );
1164
1165                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1166                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1167                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1168                                         $extraAttribs = array();
1169
1170                                         $msgLink = wfMessage( $line[0] )->inContentLanguage();
1171                                         if ( $msgLink->exists() ) {
1172                                                 $link = $msgLink->text();
1173                                                 if ( $link == '-' ) {
1174                                                         continue;
1175                                                 }
1176                                         } else {
1177                                                 $link = $line[0];
1178                                         }
1179
1180                                         $msgText = wfMessage( $line[1] );
1181                                         if ( $msgText->exists() ) {
1182                                                 $text = $msgText->text();
1183                                         } else {
1184                                                 $text = $line[1];
1185                                         }
1186
1187                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1188                                                 $href = $link;
1189                                                 //Parser::getExternalLinkAttribs won't work here because of the Namespace things
1190                                                 global $wgNoFollowLinks;
1191                                                 if ( $wgNoFollowLinks ) {
1192                                                         $extraAttribs['rel'] = 'nofollow';
1193
1194                                                         global $wgNoFollowDomainExceptions;
1195                                                         if ( $wgNoFollowDomainExceptions ) {
1196                                                                 $bits = wfParseUrl( $url );
1197                                                                 if ( is_array( $bits ) && isset( $bits['host'] ) ) {
1198                                                                         foreach ( $wgNoFollowDomainExceptions as $domain ) {
1199                                                                                 if ( substr( $bits['host'], -strlen( $domain ) ) == $domain ) {
1200                                                                                         unset( $extraAttribs['rel'] );
1201                                                                                         break;
1202                                                                                 }
1203                                                                         }
1204                                                                 }
1205                                                         }
1206                                                 }
1207                                                 global $wgExternalLinkTarget;
1208                                                 if ( $wgExternalLinkTarget) {
1209                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1210                                                 }
1211                                         } else {
1212                                                 $title = Title::newFromText( $link );
1213
1214                                                 if ( $title ) {
1215                                                         $title = $title->fixSpecialName();
1216                                                         $href = $title->getLocalURL();
1217                                                 } else {
1218                                                         $href = 'INVALID-TITLE';
1219                                                 }
1220                                         }
1221
1222                                         $bar[$heading][] = array_merge( array(
1223                                                 'text' => $text,
1224                                                 'href' => $href,
1225                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1226                                                 'active' => false
1227                                         ), $extraAttribs );
1228                                 } elseif ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
1229                                         global $wgParser;
1230
1231                                         $line = substr( $line, 2, strlen( $line ) - 4 );
1232
1233                                         $options = new ParserOptions();
1234                                         $options->setEditSection( false );
1235                                         $options->setInterfaceMessage( true );
1236                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $this->getTitle(), $options )->getText();
1237                                 } else {
1238                                         continue;
1239                                 }
1240                         }
1241                 }
1242
1243                 if ( count( $wikiBar ) > 0 ) {
1244                         $bar = array_merge( $bar, $wikiBar );
1245                 }
1246
1247                 return $bar;
1248         }
1249
1250         /**
1251          * Should we include common/wikiprintable.css?  Skins that have their own
1252          * print stylesheet should override this and return false.  (This is an
1253          * ugly hack to get Monobook to play nicely with
1254          * OutputPage::headElement().)
1255          *
1256          * @return bool
1257          */
1258         public function commonPrintStylesheet() {
1259                 return true;
1260         }
1261
1262         /**
1263          * Gets new talk page messages for the current user.
1264          * @return MediaWiki message or if no new talk page messages, nothing
1265          */
1266         function getNewtalks() {
1267                 $out = $this->getOutput();
1268
1269                 $newtalks = $this->getUser()->getNewMessageLinks();
1270                 $ntl = '';
1271
1272                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1273                         $userTitle = $this->getUser()->getUserPage();
1274                         $userTalkTitle = $userTitle->getTalkPage();
1275
1276                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1277                                 $newMessagesLink = $this->link(
1278                                         $userTalkTitle,
1279                                         wfMsgHtml( 'newmessageslink' ),
1280                                         array(),
1281                                         array( 'redirect' => 'no' ),
1282                                         array( 'known', 'noclasses' )
1283                                 );
1284
1285                                 $newMessagesDiffLink = $this->link(
1286                                         $userTalkTitle,
1287                                         wfMsgHtml( 'newmessagesdifflink' ),
1288                                         array(),
1289                                         array( 'diff' => 'cur' ),
1290                                         array( 'known', 'noclasses' )
1291                                 );
1292
1293                                 $ntl = wfMsg(
1294                                         'youhavenewmessages',
1295                                         $newMessagesLink,
1296                                         $newMessagesDiffLink
1297                                 );
1298                                 # Disable Squid cache
1299                                 $out->setSquidMaxage( 0 );
1300                         }
1301                 } elseif ( count( $newtalks ) ) {
1302                         // _>" " for BC <= 1.16
1303                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
1304                         $msgs = array();
1305
1306                         foreach ( $newtalks as $newtalk ) {
1307                                 $msgs[] = Xml::element(
1308                                         'a',
1309                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1310                                 );
1311                         }
1312                         $parts = implode( $sep, $msgs );
1313                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
1314                         $out->setSquidMaxage( 0 );
1315                 }
1316
1317                 return $ntl;
1318         }
1319
1320         /**
1321          * Get a cached notice
1322          *
1323          * @param $name String: message name, or 'default' for $wgSiteNotice
1324          * @return String: HTML fragment
1325          */
1326         private function getCachedNotice( $name ) {
1327                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1328
1329                 wfProfileIn( __METHOD__ );
1330
1331                 $needParse = false;
1332
1333                 if( $name === 'default' ) {
1334                         // special case
1335                         global $wgSiteNotice;
1336                         $notice = $wgSiteNotice;
1337                         if( empty( $notice ) ) {
1338                                 wfProfileOut( __METHOD__ );
1339                                 return false;
1340                         }
1341                 } else {
1342                         $msg = wfMessage( $name )->inContentLanguage();
1343                         if( $msg->isDisabled() ) {
1344                                 wfProfileOut( __METHOD__ );
1345                                 return false;
1346                         }
1347                         $notice = $msg->plain();
1348                 }
1349
1350                 // Use the extra hash appender to let eg SSL variants separately cache.
1351                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1352                 $cachedNotice = $parserMemc->get( $key );
1353                 if( is_array( $cachedNotice ) ) {
1354                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1355                                 $notice = $cachedNotice['html'];
1356                         } else {
1357                                 $needParse = true;
1358                         }
1359                 } else {
1360                         $needParse = true;
1361                 }
1362
1363                 if ( $needParse ) {
1364                         $parsed = $this->getOutput()->parse( $notice );
1365                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1366                         $notice = $parsed;
1367                 }
1368
1369                 $notice = Html::rawElement( 'div', array( 'id' => 'localNotice',
1370                         'lang' => $wgContLang->getCode(), 'dir' => $wgContLang->getDir() ), $notice );
1371                 wfProfileOut( __METHOD__ );
1372                 return $notice;
1373         }
1374
1375         /**
1376          * Get a notice based on page's namespace
1377          *
1378          * @return String: HTML fragment
1379          */
1380         function getNamespaceNotice() {
1381                 wfProfileIn( __METHOD__ );
1382
1383                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1384                 $namespaceNotice = $this->getCachedNotice( $key );
1385                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1386                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1387                 } else {
1388                         $namespaceNotice = '';
1389                 }
1390
1391                 wfProfileOut( __METHOD__ );
1392                 return $namespaceNotice;
1393         }
1394
1395         /**
1396          * Get the site notice
1397          *
1398          * @return String: HTML fragment
1399          */
1400         function getSiteNotice() {
1401                 wfProfileIn( __METHOD__ );
1402                 $siteNotice = '';
1403
1404                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1405                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1406                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1407                         } else {
1408                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1409                                 if ( !$anonNotice ) {
1410                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1411                                 } else {
1412                                         $siteNotice = $anonNotice;
1413                                 }
1414                         }
1415                         if ( !$siteNotice ) {
1416                                 $siteNotice = $this->getCachedNotice( 'default' );
1417                         }
1418                 }
1419
1420                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1421                 wfProfileOut( __METHOD__ );
1422                 return $siteNotice;
1423         }
1424
1425         /**
1426          * Create a section edit link.  This supersedes editSectionLink() and
1427          * editSectionLinkForOther().
1428          *
1429          * @param $nt      Title  The title being linked to (may not be the same as
1430          *   $wgTitle, if the section is included from a template)
1431          * @param $section string The designation of the section being pointed to,
1432          *   to be included in the link, like "&section=$section"
1433          * @param $tooltip string The tooltip to use for the link: will be escaped
1434          *   and wrapped in the 'editsectionhint' message
1435          * @param $lang    string Language code
1436          * @return         string HTML to use for edit link
1437          */
1438         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1439                 // HTML generated here should probably have userlangattributes
1440                 // added to it for LTR text on RTL pages
1441                 $attribs = array();
1442                 if ( !is_null( $tooltip ) ) {
1443                         # Bug 25462: undo double-escaping.
1444                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1445                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1446                 }
1447                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1448                         $attribs,
1449                         array( 'action' => 'edit', 'section' => $section ),
1450                         array( 'noclasses', 'known' )
1451                 );
1452
1453                 # Run the old hook.  This takes up half of the function . . . hopefully
1454                 # we can rid of it someday.
1455                 $attribs = '';
1456                 if ( $tooltip ) {
1457                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1458                         $attribs = " title=\"$attribs\"";
1459                 }
1460                 $result = null;
1461                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1462                 if ( !is_null( $result ) ) {
1463                         # For reverse compatibility, add the brackets *after* the hook is
1464                         # run, and even add them to hook-provided text.  (This is the main
1465                         # reason that the EditSectionLink hook is deprecated in favor of
1466                         # DoEditSectionLink: it can't change the brackets or the span.)
1467                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1468                         return "<span class=\"editsection\">$result</span>";
1469                 }
1470
1471                 # Add the brackets and the span, and *then* run the nice new hook, with
1472                 # clean and non-redundant arguments.
1473                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1474                 $result = "<span class=\"editsection\">$result</span>";
1475
1476                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1477                 return $result;
1478         }
1479
1480         /**
1481          * Use PHP's magic __call handler to intercept legacy calls to the linker
1482          * for backwards compatibility.
1483          *
1484          * @param $fname String Name of called method
1485          * @param $args Array Arguments to the method
1486          */
1487         function __call( $fname, $args ) {
1488                 $realFunction = array( 'Linker', $fname );
1489                 if ( is_callable( $realFunction ) ) {
1490                         return call_user_func_array( $realFunction, $args );
1491                 } else {
1492                         $className = get_class( $this );
1493                         throw new MWException( "Call to undefined method $className::$fname" );
1494                 }
1495         }
1496
1497 }