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 associative 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 skinname messages for available skins.
  61          * @return array of strings
  62          */
  63         static function getSkinNameMessages() {
  64                 $messages = array();
  65                 foreach( self::getSkinNames() as $skinKey => $skinName ) {
  66                         $messages[] = "skinname-$skinKey";
  67                 }
  68                 return $messages;
  69         }
  70
  71         /**
  72          * Fetch the list of usable skins in regards to $wgSkipSkins.
  73          * Useful for Special:Preferences and other places where you
  74          * only want to show skins users _can_ use.
  75          * @return array of strings
  76          */
  77         public static function getUsableSkins() {
  78                 global $wgSkipSkins;
  79
  80                 $usableSkins = self::getSkinNames();
  81
  82                 foreach ( $wgSkipSkins as $skip ) {
  83                         unset( $usableSkins[$skip] );
  84                 }
  85
  86                 return $usableSkins;
  87         }
  88
  89         /**
  90          * Normalize a skin preference value to a form that can be loaded.
  91          * If a skin can't be found, it will fall back to the configured
  92          * default (or the old 'Classic' skin if that's broken).
  93          * @param $key String: 'monobook', 'standard', etc.
  94          * @return string
  95          */
  96         static function normalizeKey( $key ) {
  97                 global $wgDefaultSkin;
  98
  99                 $skinNames = Skin::getSkinNames();
 100
 101                 if ( $key == '' ) {
 102                         // Don't return the default immediately;
 103                         // in a misconfiguration we need to fall back.
 104                         $key = $wgDefaultSkin;
 105                 }
 106
 107                 if ( isset( $skinNames[$key] ) ) {
 108                         return $key;
 109                 }
 110
 111                 // Older versions of the software used a numeric setting
 112                 // in the user preferences.
 113                 $fallback = array(
 114                         0 => $wgDefaultSkin,
 115                         1 => 'nostalgia',
 116                         2 => 'cologneblue'
 117                 );
 118
 119                 if ( isset( $fallback[$key] ) ) {
 120                         $key = $fallback[$key];
 121                 }
 122
 123                 if ( isset( $skinNames[$key] ) ) {
 124                         return $key;
 125                 } elseif ( isset( $skinNames[$wgDefaultSkin] ) ) {
 126                         return $wgDefaultSkin;
 127                 } else {
 128                         return 'vector';
 129                 }
 130         }
 131
 132         /**
 133          * Factory method for loading a skin of a given type
 134          * @param $key String: 'monobook', 'standard', etc.
 135          * @return Skin
 136          */
 137         static function &newFromKey( $key ) {
 138                 global $wgStyleDirectory;
 139
 140                 $key = Skin::normalizeKey( $key );
 141
 142                 $skinNames = Skin::getSkinNames();
 143                 $skinName = $skinNames[$key];
 144                 $className = "Skin{$skinName}";
 145
 146                 # Grab the skin class and initialise it.
 147                 if ( !MWInit::classExists( $className ) ) {
 148
 149                         if ( !defined( 'MW_COMPILED' ) ) {
 150                                 // Preload base classes to work around APC/PHP5 bug
 151                                 $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 152                                 if ( file_exists( $deps ) ) {
 153                                         include_once( $deps );
 154                                 }
 155                                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 156                         }
 157
 158                         # Check if we got if not failback to default skin
 159                         if ( !MWInit::classExists( $className ) ) {
 160                                 # DO NOT die if the class isn't found. This breaks maintenance
 161                                 # scripts and can cause a user account to be unrecoverable
 162                                 # except by SQL manipulation if a previously valid skin name
 163                                 # is no longer valid.
 164                                 wfDebug( "Skin class does not exist: $className\n" );
 165                                 $className = 'SkinVector';
 166                                 if ( !defined( 'MW_COMPILED' ) ) {
 167                                         require_once( "{$wgStyleDirectory}/Vector.php" );
 168                                 }
 169                         }
 170                 }
 171                 $skin = new $className( $key );
 172                 return $skin;
 173         }
 174
 175         /** @return string skin name */
 176         public function getSkinName() {
 177                 return $this->skinname;
 178         }
 179
 180         /**
 181          * @param $out OutputPage
 182          */
 183         function initPage( OutputPage $out ) {
 184                 wfProfileIn( __METHOD__ );
 185
 186                 $this->preloadExistence();
 187
 188                 wfProfileOut( __METHOD__ );
 189         }
 190
 191         /**
 192          * Preload the existence of three commonly-requested pages in a single query
 193          */
 194         function preloadExistence() {
 195                 $user = $this->getUser();
 196
 197                 // User/talk link
 198                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 199
 200                 // Other tab link
 201                 if ( $this->getTitle()->isSpecialPage() ) {
 202                         // nothing
 203                 } elseif ( $this->getTitle()->isTalkPage() ) {
 204                         $titles[] = $this->getTitle()->getSubjectPage();
 205                 } else {
 206                         $titles[] = $this->getTitle()->getTalkPage();
 207                 }
 208
 209                 $lb = new LinkBatch( $titles );
 210                 $lb->setCaller( __METHOD__ );
 211                 $lb->execute();
 212         }
 213
 214         /**
 215          * Get the current revision ID
 216          *
 217          * @return Integer
 218          */
 219         public function getRevisionId() {
 220                 return $this->getOutput()->getRevisionId();
 221         }
 222
 223         /**
 224          * Whether the revision displayed is the latest revision of the page
 225          *
 226          * @return Boolean
 227          */
 228         public function isRevisionCurrent() {
 229                 $revID = $this->getRevisionId();
 230                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 231         }
 232
 233         /**
 234          * Set the "relevant" title
 235          * @see self::getRelevantTitle()
 236          * @param $t Title object to use
 237          */
 238         public function setRelevantTitle( $t ) {
 239                 $this->mRelevantTitle = $t;
 240         }
 241
 242         /**
 243          * Return the "relevant" title.
 244          * A "relevant" title is not necessarily the actual title of the page.
 245          * Special pages like Special:MovePage use set the page they are acting on
 246          * as their "relevant" title, this allows the skin system to display things
 247          * such as content tabs which belong to to that page instead of displaying
 248          * a basic special page tab which has almost no meaning.
 249          *
 250          * @return Title
 251          */
 252         public function getRelevantTitle() {
 253                 if ( isset($this->mRelevantTitle) ) {
 254                         return $this->mRelevantTitle;
 255                 }
 256                 return $this->getTitle();
 257         }
 258
 259         /**
 260          * Set the "relevant" user
 261          * @see self::getRelevantUser()
 262          * @param $u User object to use
 263          */
 264         public function setRelevantUser( $u ) {
 265                 $this->mRelevantUser = $u;
 266         }
 267
 268         /**
 269          * Return the "relevant" user.
 270          * A "relevant" user is similar to a relevant title. Special pages like
 271          * Special:Contributions mark the user which they are relevant to so that
 272          * things like the toolbox can display the information they usually are only
 273          * able to display on a user's userpage and talkpage.
 274          * @return User
 275          */
 276         public function getRelevantUser() {
 277                 if ( isset($this->mRelevantUser) ) {
 278                         return $this->mRelevantUser;
 279                 }
 280                 $title = $this->getRelevantTitle();
 281                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 282                         $rootUser = strtok( $title->getText(), '/' );
 283                         if ( User::isIP( $rootUser ) ) {
 284                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 285                         } else {
 286                                 $user = User::newFromName( $rootUser, false );
 287                                 if ( $user && $user->isLoggedIn() ) {
 288                                         $this->mRelevantUser = $user;
 289                                 }
 290                         }
 291                         return $this->mRelevantUser;
 292                 }
 293                 return null;
 294         }
 295
 296         /**
 297          * Outputs the HTML generated by other functions.
 298          * @param $out OutputPage
 299          */
 300         abstract function outputPage( OutputPage $out = null );
 301
 302         /**
 303          * @param $data array
 304          * @return string
 305          */
 306         static function makeVariablesScript( $data ) {
 307                 if ( $data ) {
 308                         return Html::inlineScript(
 309                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 310                         );
 311                 } else {
 312                         return '';
 313                 }
 314         }
 315
 316         /**
 317          * Make a <script> tag containing global variables
 318          *
 319          * @deprecated in 1.19
 320          * @param $unused Unused
 321          * @return string HTML fragment
 322          */
 323         public static function makeGlobalVariablesScript( $unused ) {
 324                 global $wgOut;
 325
 326                 wfDeprecated( __METHOD__, '1.19' );
 327
 328                 return self::makeVariablesScript( $wgOut->getJSVars() );
 329         }
 330
 331         /**
 332          * Get the query to generate a dynamic stylesheet
 333          *
 334          * @return array
 335          */
 336         public static function getDynamicStylesheetQuery() {
 337                 global $wgSquidMaxage;
 338
 339                 return array(
 340                                 'action' => 'raw',
 341                                 'maxage' => $wgSquidMaxage,
 342                                 'usemsgcache' => 'yes',
 343                                 'ctype' => 'text/css',
 344                                 'smaxage' => $wgSquidMaxage,
 345                         );
 346         }
 347
 348         /**
 349          * Add skin specific stylesheets
 350          * Calling this method with an $out of anything but the same OutputPage
 351          * inside ->getOutput() is deprecated. The $out arg is kept
 352          * for compatibility purposes with skins.
 353          * @param $out OutputPage
 354          * @delete
 355          */
 356         abstract function setupSkinUserCss( OutputPage $out );
 357
 358         /**
 359          * TODO: document
 360          * @param $title Title
 361          * @return String
 362          */
 363         function getPageClasses( $title ) {
 364                 $numeric = 'ns-' . $title->getNamespace();
 365
 366                 if ( $title->isSpecialPage() ) {
 367                         $type = 'ns-special';
 368                         // bug 23315: provide a class based on the canonical special page name without subpages
 369                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 370                         if ( $canonicalName ) {
 371                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 372                         } else {
 373                                 $type .= ' mw-invalidspecialpage';
 374                         }
 375                 } elseif ( $title->isTalkPage() ) {
 376                         $type = 'ns-talk';
 377                 } else {
 378                         $type = 'ns-subject';
 379                 }
 380
 381                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 382
 383                 return "$numeric $type $name";
 384         }
 385
 386         /**
 387          * This will be called by OutputPage::headElement when it is creating the
 388          * <body> tag, skins can override it if they have a need to add in any
 389          * body attributes or classes of their own.
 390          * @param $out OutputPage
 391          * @param $bodyAttrs Array
 392          */
 393         function addToBodyAttributes( $out, &$bodyAttrs ) {
 394                 // does nothing by default
 395         }
 396
 397         /**
 398          * URL to the logo
 399          * @return String
 400          */
 401         function getLogo() {
 402                 global $wgLogo;
 403                 return $wgLogo;
 404         }
 405
 406         /**
 407          * @return string
 408          */
 409         function getCategoryLinks() {
 410                 global $wgUseCategoryBrowser;
 411
 412                 $out = $this->getOutput();
 413                 $allCats = $out->getCategoryLinks();
 414
 415                 if ( !count( $allCats ) ) {
 416                         return '';
 417                 }
 418
 419                 $embed = "<li>";
 420                 $pop = "</li>";
 421
 422                 $s = '';
 423                 $colon = $this->msg( 'colon-separator' )->escaped();
 424
 425                 if ( !empty( $allCats['normal'] ) ) {
 426                         $t = $embed . implode( "{$pop}{$embed}" , $allCats['normal'] ) . $pop;
 427
 428                         $msg = $this->msg( 'pagecategories', count( $allCats['normal'] ) )->escaped();
 429                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 430                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 431                                 Linker::link( Title::newFromText( $linkPage ), $msg )
 432                                 . $colon . '<ul>' . $t . '</ul>' . '</div>';
 433                 }
 434
 435                 # Hidden categories
 436                 if ( isset( $allCats['hidden'] ) ) {
 437                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 438                                 $class = ' mw-hidden-cats-user-shown';
 439                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 440                                 $class = ' mw-hidden-cats-ns-shown';
 441                         } else {
 442                                 $class = ' mw-hidden-cats-hidden';
 443                         }
 444
 445                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 446                                 $this->msg( 'hidden-categories', count( $allCats['hidden'] ) )->escaped() .
 447                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}" , $allCats['hidden'] ) . $pop . '</ul>' .
 448                                 '</div>';
 449                 }
 450
 451                 # optional 'dmoz-like' category browser. Will be shown under the list
 452                 # of categories an article belong to
 453                 if ( $wgUseCategoryBrowser ) {
 454                         $s .= '<br /><hr />';
 455
 456                         # get a big array of the parents tree
 457                         $parenttree = $this->getTitle()->getParentCategoryTree();
 458                         # Skin object passed by reference cause it can not be
 459                         # accessed under the method subfunction drawCategoryBrowser
 460                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 461                         # Clean out bogus first entry and sort them
 462                         unset( $tempout[0] );
 463                         asort( $tempout );
 464                         # Output one per line
 465                         $s .= implode( "<br />\n", $tempout );
 466                 }
 467
 468                 return $s;
 469         }
 470
 471         /**
 472          * Render the array as a serie of links.
 473          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 474          * @return String separated by &gt;, terminate with "\n"
 475          */
 476         function drawCategoryBrowser( $tree ) {
 477                 $return = '';
 478
 479                 foreach ( $tree as $element => $parent ) {
 480                         if ( empty( $parent ) ) {
 481                                 # element start a new list
 482                                 $return .= "\n";
 483                         } else {
 484                                 # grab the others elements
 485                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 486                         }
 487
 488                         # add our current element to the list
 489                         $eltitle = Title::newFromText( $element );
 490                         $return .=  Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 491                 }
 492
 493                 return $return;
 494         }
 495
 496         /**
 497          * @return string
 498          */
 499         function getCategories() {
 500                 $out = $this->getOutput();
 501
 502                 $catlinks = $this->getCategoryLinks();
 503
 504                 $classes = 'catlinks';
 505
 506                 // Check what we're showing
 507                 $allCats = $out->getCategoryLinks();
 508                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 509                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 510
 511                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 512                         $classes .= ' catlinks-allhidden';
 513                 }
 514
 515                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 516         }
 517
 518         /**
 519          * This runs a hook to allow extensions placing their stuff after content
 520          * and article metadata (e.g. categories).
 521          * Note: This function has nothing to do with afterContent().
 522          *
 523          * This hook is placed here in order to allow using the same hook for all
 524          * skins, both the SkinTemplate based ones and the older ones, which directly
 525          * use this class to get their data.
 526          *
 527          * The output of this function gets processed in SkinTemplate::outputPage() for
 528          * the SkinTemplate based skins, all other skins should directly echo it.
 529          *
 530          * @return String, empty by default, if not changed by any hook function.
 531          */
 532         protected function afterContentHook() {
 533                 $data = '';
 534
 535                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 536                         // adding just some spaces shouldn't toggle the output
 537                         // of the whole <div/>, so we use trim() here
 538                         if ( trim( $data ) != '' ) {
 539                                 // Doing this here instead of in the skins to
 540                                 // ensure that the div has the same ID in all
 541                                 // skins
 542                                 $data = "<div id='mw-data-after-content'>\n" .
 543                                         "\t$data\n" .
 544                                         "</div>\n";
 545                         }
 546                 } else {
 547                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 548                 }
 549
 550                 return $data;
 551         }
 552
 553         /**
 554          * Generate debug data HTML for displaying at the bottom of the main content
 555          * area.
 556          * @return String HTML containing debug data, if enabled (otherwise empty).
 557          */
 558         protected function generateDebugHTML() {
 559                 global $wgShowDebug;
 560
 561                 $html = MWDebug::getDebugHTML( $this->getContext() );
 562
 563                 if ( $wgShowDebug ) {
 564                         $listInternals = $this->formatDebugHTML( $this->getOutput()->mDebugtext );
 565                         $html .= "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 566                                 $listInternals . "</ul>\n";
 567                 }
 568
 569                 return $html;
 570         }
 571
 572         /**
 573          * @param $debugText string
 574          * @return string
 575          */
 576         private function formatDebugHTML( $debugText ) {
 577                 global $wgDebugTimestamps;
 578
 579                 $lines = explode( "\n", $debugText );
 580                 $curIdent = 0;
 581                 $ret = '<li>';
 582
 583                 foreach ( $lines as $line ) {
 584                         $pre = '';
 585                         if ( $wgDebugTimestamps ) {
 586                                 $matches = array();
 587                                 if ( preg_match( '/^(\d+\.\d+ {1,3}\d+.\dM\s{2})/', $line, $matches ) ) {
 588                                         $pre = $matches[1];
 589                                         $line = substr( $line, strlen( $pre ) );
 590                                 }
 591                         }
 592                         $display = ltrim( $line );
 593                         $ident = strlen( $line ) - strlen( $display );
 594                         $diff = $ident - $curIdent;
 595
 596                         $display = $pre . $display;
 597                         if ( $display == '' ) {
 598                                 $display = "\xc2\xa0";
 599                         }
 600
 601                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 602                                 $ident = $curIdent;
 603                                 $diff = 0;
 604                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 605                         } else {
 606                                 $display = htmlspecialchars( $display );
 607                         }
 608
 609                         if ( $diff < 0 ) {
 610                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 611                         } elseif ( $diff == 0 ) {
 612                                 $ret .= "</li><li>\n";
 613                         } else {
 614                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 615                         }
 616                         $ret .= "<tt>$display</tt>\n";
 617
 618                         $curIdent = $ident;
 619                 }
 620
 621                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 622
 623                 return $ret;
 624         }
 625
 626         /**
 627          * This gets called shortly before the </body> tag.
 628          *
 629          * @return String HTML-wrapped JS code to be put before </body>
 630          */
 631         function bottomScripts() {
 632                 // TODO and the suckage continues. This function is really just a wrapper around
 633                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 634                 // up at some point
 635                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 636                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 637
 638                 return $bottomScriptText;
 639         }
 640
 641         /**
 642          * Text with the permalink to the source page,
 643          * usually shown on the footer of a printed page
 644          *
 645          * @return string HTML text with an URL
 646          */
 647         function printSource() {
 648                 $oldid = $this->getRevisionId();
 649                 if ( $oldid ) {
 650                         $url = htmlspecialchars( $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid ) );
 651                 } else {
 652                         // oldid not available for non existing pages
 653                         $url = htmlspecialchars( $this->getTitle()->getCanonicalURL() );
 654                 }
 655                 return $this->msg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' )->text();
 656         }
 657
 658         /**
 659          * @return String
 660          */
 661         function getUndeleteLink() {
 662                 $action = $this->getRequest()->getVal( 'action', 'view' );
 663
 664                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) &&
 665                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 666                         $n = $this->getTitle()->isDeleted();
 667
 668
 669                         if ( $n ) {
 670                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 671                                         $msg = 'thisisdeleted';
 672                                 } else {
 673                                         $msg = 'viewdeleted';
 674                                 }
 675
 676                                 return $this->msg( $msg )->rawParams(
 677                                         Linker::linkKnown(
 678                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 679                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 680                                         )->text();
 681                         }
 682                 }
 683
 684                 return '';
 685         }
 686
 687         /**
 688          * @return string
 689          */
 690         function subPageSubtitle() {
 691                 $out = $this->getOutput();
 692                 $subpages = '';
 693
 694                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 695                         return $subpages;
 696                 }
 697
 698                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 699                         $ptext = $this->getTitle()->getPrefixedText();
 700                         if ( preg_match( '/\//', $ptext ) ) {
 701                                 $links = explode( '/', $ptext );
 702                                 array_pop( $links );
 703                                 $c = 0;
 704                                 $growinglink = '';
 705                                 $display = '';
 706
 707                                 foreach ( $links as $link ) {
 708                                         $growinglink .= $link;
 709                                         $display .= $link;
 710                                         $linkObj = Title::newFromText( $growinglink );
 711
 712                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 713                                                 $getlink = Linker::linkKnown(
 714                                                         $linkObj,
 715                                                         htmlspecialchars( $display )
 716                                                 );
 717
 718                                                 $c++;
 719
 720                                                 if ( $c > 1 ) {
 721                                                         $subpages .= $this->msg( 'pipe-separator' )->escaped();
 722                                                 } else  {
 723                                                         $subpages .= '&lt; ';
 724                                                 }
 725
 726                                                 $subpages .= $getlink;
 727                                                 $display = '';
 728                                         } else {
 729                                                 $display .= '/';
 730                                         }
 731                                         $growinglink .= '/';
 732                                 }
 733                         }
 734                 }
 735
 736                 return $subpages;
 737         }
 738
 739         /**
 740          * Returns true if the IP should be shown in the header
 741          * @return Bool
 742          */
 743         function showIPinHeader() {
 744                 global $wgShowIPinHeader;
 745                 return $wgShowIPinHeader && session_id() != '';
 746         }
 747
 748         /**
 749          * @return String
 750          */
 751         function getSearchLink() {
 752                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 753                 return $searchPage->getLocalURL();
 754         }
 755
 756         /**
 757          * @return string
 758          */
 759         function escapeSearchLink() {
 760                 return htmlspecialchars( $this->getSearchLink() );
 761         }
 762
 763         /**
 764          * @param $type string
 765          * @return string
 766          */
 767         function getCopyright( $type = 'detect' ) {
 768                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgContLang;
 769
 770                 if ( $type == 'detect' ) {
 771                         if ( !$this->isRevisionCurrent() && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled() ) {
 772                                 $type = 'history';
 773                         } else {
 774                                 $type = 'normal';
 775                         }
 776                 }
 777
 778                 if ( $type == 'history' ) {
 779                         $msg = 'history_copyright';
 780                 } else {
 781                         $msg = 'copyright';
 782                 }
 783
 784                 if ( $wgRightsPage ) {
 785                         $title = Title::newFromText( $wgRightsPage );
 786                         $link = Linker::linkKnown( $title, $wgRightsText );
 787                 } elseif ( $wgRightsUrl ) {
 788                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 789                 } elseif ( $wgRightsText ) {
 790                         $link = $wgRightsText;
 791                 } else {
 792                         # Give up now
 793                         return '';
 794                 }
 795
 796                 // Allow for site and per-namespace customization of copyright notice.
 797                 $forContent = true;
 798
 799                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 800
 801                 $msgObj = $this->msg( $msg )->rawParams( $link );
 802                 if ( $forContent ) {
 803                         $msg = $msgObj->inContentLanguage()->text();
 804                         if ( $this->getLanguage()->getCode() !== $wgContLang->getCode() ) {
 805                                 $msg = Html::rawElement( 'span', array( 'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $msg );
 806                         }
 807                         return $msg;
 808                 } else {
 809                         return $msgObj->text();
 810                 }
 811         }
 812
 813         /**
 814          * @return null|string
 815          */
 816         function getCopyrightIcon() {
 817                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 818
 819                 $out = '';
 820
 821                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 822                         $out = $wgCopyrightIcon;
 823                 } elseif ( $wgRightsIcon ) {
 824                         $icon = htmlspecialchars( $wgRightsIcon );
 825
 826                         if ( $wgRightsUrl ) {
 827                                 $url = htmlspecialchars( $wgRightsUrl );
 828                                 $out .= '<a href="' . $url . '">';
 829                         }
 830
 831                         $text = htmlspecialchars( $wgRightsText );
 832                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 833
 834                         if ( $wgRightsUrl ) {
 835                                 $out .= '</a>';
 836                         }
 837                 }
 838
 839                 return $out;
 840         }
 841
 842         /**
 843          * Gets the powered by MediaWiki icon.
 844          * @return string
 845          */
 846         function getPoweredBy() {
 847                 global $wgStylePath;
 848
 849                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 850                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 851                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 852                 return $text;
 853         }
 854
 855         /**
 856          * Get the timestamp of the latest revision, formatted in user language
 857          *
 858          * @return String
 859          */
 860         protected function lastModified() {
 861                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 862
 863                 # No cached timestamp, load it from the database
 864                 if ( $timestamp === null ) {
 865                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 866                 }
 867
 868                 if ( $timestamp ) {
 869                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 870                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 871                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->text();
 872                 } else {
 873                         $s = '';
 874                 }
 875
 876                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 877                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->text() . '</strong>';
 878                 }
 879
 880                 return $s;
 881         }
 882
 883         /**
 884          * @param $align string
 885          * @return string
 886          */
 887         function logoText( $align = '' ) {
 888                 if ( $align != '' ) {
 889                         $a = " align='{$align}'";
 890                 } else {
 891                         $a = '';
 892                 }
 893
 894                 $mp = $this->msg( 'mainpage' )->escaped();
 895                 $mptitle = Title::newMainPage();
 896                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 897
 898                 $logourl = $this->getLogo();
 899                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 900
 901                 return $s;
 902         }
 903
 904         /**
 905          * Renders a $wgFooterIcons icon acording to the method's arguments
 906          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
 907          * @param $withImage Bool|String: Whether to use the icon's image or output a text-only footericon
 908          * @return String HTML
 909          */
 910         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 911                 if ( is_string( $icon ) ) {
 912                         $html = $icon;
 913                 } else { // Assuming array
 914                         $url = isset($icon["url"]) ? $icon["url"] : null;
 915                         unset( $icon["url"] );
 916                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 917                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
 918                         } else {
 919                                 $html = htmlspecialchars( $icon["alt"] );
 920                         }
 921                         if ( $url ) {
 922                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
 923                         }
 924                 }
 925                 return $html;
 926         }
 927
 928         /**
 929          * Gets the link to the wiki's main page.
 930          * @return string
 931          */
 932         function mainPageLink() {
 933                 $s = Linker::linkKnown(
 934                         Title::newMainPage(),
 935                         $this->msg( 'mainpage' )->escaped()
 936                 );
 937
 938                 return $s;
 939         }
 940
 941         /**
 942          * @param $desc
 943          * @param $page
 944          * @return string
 945          */
 946         public function footerLink( $desc, $page ) {
 947                 // if the link description has been set to "-" in the default language,
 948                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
 949                         // then it is disabled, for all languages.
 950                         return '';
 951                 } else {
 952                         // Otherwise, we display the link for the user, described in their
 953                         // language (which may or may not be the same as the default language),
 954                         // but we make the link target be the one site-wide page.
 955                         $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
 956
 957                         return Linker::linkKnown(
 958                                 $title,
 959                                 $this->msg( $desc )->escaped()
 960                         );
 961                 }
 962         }
 963
 964         /**
 965          * Gets the link to the wiki's privacy policy page.
 966          * @return String HTML
 967          */
 968         function privacyLink() {
 969                 return $this->footerLink( 'privacy', 'privacypage' );
 970         }
 971
 972         /**
 973          * Gets the link to the wiki's about page.
 974          * @return String HTML
 975          */
 976         function aboutLink() {
 977                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 978         }
 979
 980         /**
 981          * Gets the link to the wiki's general disclaimers page.
 982          * @return String HTML
 983          */
 984         function disclaimerLink() {
 985                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
 986         }
 987
 988         /**
 989          * Return URL options for the 'edit page' link.
 990          * This may include an 'oldid' specifier, if the current page view is such.
 991          *
 992          * @return array
 993          * @private
 994          */
 995         function editUrlOptions() {
 996                 $options = array( 'action' => 'edit' );
 997
 998                 if ( !$this->isRevisionCurrent() ) {
 999                         $options['oldid'] = intval( $this->getRevisionId() );
1000                 }
1001
1002                 return $options;
1003         }
1004
1005         /**
1006          * @param $id User|int
1007          * @return bool
1008          */
1009         function showEmailUser( $id ) {
1010                 if ( $id instanceof User ) {
1011                         $targetUser = $id;
1012                 } else {
1013                         $targetUser = User::newFromId( $id );
1014                 }
1015                 return $this->getUser()->canSendEmail() && # the sending user must have a confirmed email address
1016                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1017         }
1018
1019         /**
1020          * Return a fully resolved style path url to images or styles stored in the common folder.
1021          * This method returns a url resolved using the configured skin style path
1022          * and includes the style version inside of the url.
1023          * @param $name String: The name or path of a skin resource file
1024          * @return String The fully resolved style path url including styleversion
1025          */
1026         function getCommonStylePath( $name ) {
1027                 global $wgStylePath, $wgStyleVersion;
1028                 return "$wgStylePath/common/$name?$wgStyleVersion";
1029         }
1030
1031         /**
1032          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
1033          * This method returns a url resolved using the configured skin style path
1034          * and includes the style version inside of the url.
1035          * @param $name String: The name or path of a skin resource file
1036          * @return String The fully resolved style path url including styleversion
1037          */
1038         function getSkinStylePath( $name ) {
1039                 global $wgStylePath, $wgStyleVersion;
1040                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1041         }
1042
1043         /* these are used extensively in SkinTemplate, but also some other places */
1044
1045         /**
1046          * @param $urlaction string
1047          * @return String
1048          */
1049         static function makeMainPageUrl( $urlaction = '' ) {
1050                 $title = Title::newMainPage();
1051                 self::checkTitle( $title, '' );
1052
1053                 return $title->getLocalURL( $urlaction );
1054         }
1055
1056         /**
1057          * @param $name string
1058          * @param $urlaction string
1059          * @return String
1060          */
1061         static function makeSpecialUrl( $name, $urlaction = '' ) {
1062                 $title = SpecialPage::getSafeTitleFor( $name );
1063                 return $title->getLocalURL( $urlaction );
1064         }
1065
1066         /**
1067          * @param $name string
1068          * @param $subpage string
1069          * @param $urlaction string
1070          * @return String
1071          */
1072         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1073                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1074                 return $title->getLocalURL( $urlaction );
1075         }
1076
1077         /**
1078          * @param $name string
1079          * @param $urlaction string
1080          * @return String
1081          */
1082         static function makeI18nUrl( $name, $urlaction = '' ) {
1083                 $title = Title::newFromText( wfMsgForContent( $name ) );
1084                 self::checkTitle( $title, $name );
1085                 return $title->getLocalURL( $urlaction );
1086         }
1087
1088         /**
1089          * @param $name string
1090          * @param $urlaction string
1091          * @return String
1092          */
1093         static function makeUrl( $name, $urlaction = '' ) {
1094                 $title = Title::newFromText( $name );
1095                 self::checkTitle( $title, $name );
1096
1097                 return $title->getLocalURL( $urlaction );
1098         }
1099
1100         /**
1101          * If url string starts with http, consider as external URL, else
1102          * internal
1103          * @param $name String
1104          * @return String URL
1105          */
1106         static function makeInternalOrExternalUrl( $name ) {
1107                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1108                         return $name;
1109                 } else {
1110                         return self::makeUrl( $name );
1111                 }
1112         }
1113
1114         /**
1115          * this can be passed the NS number as defined in Language.php
1116          * @param $name
1117          * @param $urlaction string
1118          * @param $namespace int
1119          * @return String
1120          */
1121         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1122                 $title = Title::makeTitleSafe( $namespace, $name );
1123                 self::checkTitle( $title, $name );
1124
1125                 return $title->getLocalURL( $urlaction );
1126         }
1127
1128         /**
1129          * these return an array with the 'href' and boolean 'exists'
1130          * @param $name
1131          * @param $urlaction string
1132          * @return array
1133          */
1134         static function makeUrlDetails( $name, $urlaction = '' ) {
1135                 $title = Title::newFromText( $name );
1136                 self::checkTitle( $title, $name );
1137
1138                 return array(
1139                         'href' => $title->getLocalURL( $urlaction ),
1140                         'exists' => $title->getArticleID() != 0,
1141                 );
1142         }
1143
1144         /**
1145          * Make URL details where the article exists (or at least it's convenient to think so)
1146          * @param $name String Article name
1147          * @param $urlaction String
1148          * @return Array
1149          */
1150         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1151                 $title = Title::newFromText( $name );
1152                 self::checkTitle( $title, $name );
1153
1154                 return array(
1155                         'href' => $title->getLocalURL( $urlaction ),
1156                         'exists' => true
1157                 );
1158         }
1159
1160         /**
1161          * make sure we have some title to operate on
1162          *
1163          * @param $title Title
1164          * @param $name string
1165          */
1166         static function checkTitle( &$title, $name ) {
1167                 if ( !is_object( $title ) ) {
1168                         $title = Title::newFromText( $name );
1169                         if ( !is_object( $title ) ) {
1170                                 $title = Title::newFromText( '--error: link target missing--' );
1171                         }
1172                 }
1173         }
1174
1175         /**
1176          * Build an array that represents the sidebar(s), the navigation bar among them
1177          *
1178          * @return array
1179          */
1180         function buildSidebar() {
1181                 global $wgMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1182                 wfProfileIn( __METHOD__ );
1183
1184                 $key = wfMemcKey( 'sidebar', $this->getLanguage()->getCode() );
1185
1186                 if ( $wgEnableSidebarCache ) {
1187                         $cachedsidebar = $wgMemc->get( $key );
1188                         if ( $cachedsidebar ) {
1189                                 wfProfileOut( __METHOD__ );
1190                                 return $cachedsidebar;
1191                         }
1192                 }
1193
1194                 $bar = array();
1195                 $this->addToSidebar( $bar, 'sidebar' );
1196
1197                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1198                 if ( $wgEnableSidebarCache ) {
1199                         $wgMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1200                 }
1201
1202                 wfProfileOut( __METHOD__ );
1203                 return $bar;
1204         }
1205         /**
1206          * Add content from a sidebar system message
1207          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1208          *
1209          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1210          *
1211          * @param $bar array
1212          * @param $message String
1213          */
1214         function addToSidebar( &$bar, $message ) {
1215                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1216         }
1217
1218         /**
1219          * Add content from plain text
1220          * @since 1.17
1221          * @param $bar array
1222          * @param $text string
1223          * @return Array
1224          */
1225         function addToSidebarPlain( &$bar, $text ) {
1226                 $lines = explode( "\n", $text );
1227
1228                 $heading = '';
1229
1230                 foreach ( $lines as $line ) {
1231                         if ( strpos( $line, '*' ) !== 0 ) {
1232                                 continue;
1233                         }
1234                         $line = rtrim( $line, "\r" ); // for Windows compat
1235
1236                         if ( strpos( $line, '**' ) !== 0 ) {
1237                                 $heading = trim( $line, '* ' );
1238                                 if ( !array_key_exists( $heading, $bar ) ) {
1239                                         $bar[$heading] = array();
1240                                 }
1241                         } else {
1242                                 $line = trim( $line, '* ' );
1243
1244                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1245                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1246                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1247                                         if ( count( $line ) !== 2 ) {
1248                                                 // Second sanity check, could be hit by people doing
1249                                                 // funky stuff with parserfuncs... (bug 33321)
1250                                                 continue;
1251                                         }
1252
1253                                         $extraAttribs = array();
1254
1255                                         $msgLink = $this->msg( $line[0] )->inContentLanguage();
1256                                         if ( $msgLink->exists() ) {
1257                                                 $link = $msgLink->text();
1258                                                 if ( $link == '-' ) {
1259                                                         continue;
1260                                                 }
1261                                         } else {
1262                                                 $link = $line[0];
1263                                         }
1264                                         $msgText = $this->msg( $line[1] );
1265                                         if ( $msgText->exists() ) {
1266                                                 $text = $msgText->text();
1267                                         } else {
1268                                                 $text = $line[1];
1269                                         }
1270
1271                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1272                                                 $href = $link;
1273
1274                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1275                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1276                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1277                                                         $extraAttribs['rel'] = 'nofollow';
1278                                                 }
1279
1280                                                 global $wgExternalLinkTarget;
1281                                                 if ( $wgExternalLinkTarget) {
1282                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1283                                                 }
1284                                         } else {
1285                                                 $title = Title::newFromText( $link );
1286
1287                                                 if ( $title ) {
1288                                                         $title = $title->fixSpecialName();
1289                                                         $href = $title->getLinkURL();
1290                                                 } else {
1291                                                         $href = 'INVALID-TITLE';
1292                                                 }
1293                                         }
1294
1295                                         $bar[$heading][] = array_merge( array(
1296                                                 'text' => $text,
1297                                                 'href' => $href,
1298                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1299                                                 'active' => false
1300                                         ), $extraAttribs );
1301                                 } else {
1302                                         continue;
1303                                 }
1304                         }
1305                 }
1306
1307                 return $bar;
1308         }
1309
1310         /**
1311          * Should we load mediawiki.legacy.wikiprintable?  Skins that have their own
1312          * print stylesheet should override this and return false.  (This is an
1313          * ugly hack to get Monobook to play nicely with OutputPage::headElement().)
1314          *
1315          * @return bool
1316          */
1317         public function commonPrintStylesheet() {
1318                 return true;
1319         }
1320
1321         /**
1322          * Gets new talk page messages for the current user.
1323          * @return MediaWiki message or if no new talk page messages, nothing
1324          */
1325         function getNewtalks() {
1326                 $out = $this->getOutput();
1327
1328                 $newtalks = $this->getUser()->getNewMessageLinks();
1329                 $ntl = '';
1330
1331                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1332                         $userTitle = $this->getUser()->getUserPage();
1333                         $userTalkTitle = $userTitle->getTalkPage();
1334
1335                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1336                                 $newMessagesLink = Linker::linkKnown(
1337                                         $userTalkTitle,
1338                                         $this->msg( 'newmessageslink' )->escaped(),
1339                                         array(),
1340                                         array( 'redirect' => 'no' )
1341                                 );
1342
1343                                 $newMessagesDiffLink = Linker::linkKnown(
1344                                         $userTalkTitle,
1345                                         $this->msg( 'newmessagesdifflink' )->escaped(),
1346                                         array(),
1347                                         array( 'diff' => 'cur' )
1348                                 );
1349
1350                                 $ntl = $this->msg(
1351                                         'youhavenewmessages',
1352                                         $newMessagesLink,
1353                                         $newMessagesDiffLink
1354                                 )->text();
1355                                 # Disable Squid cache
1356                                 $out->setSquidMaxage( 0 );
1357                         }
1358                 } elseif ( count( $newtalks ) ) {
1359                         // _>" " for BC <= 1.16
1360                         $sep = str_replace( '_', ' ', $this->msg( 'newtalkseparator' )->escaped() );
1361                         $msgs = array();
1362
1363                         foreach ( $newtalks as $newtalk ) {
1364                                 $msgs[] = Xml::element(
1365                                         'a',
1366                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1367                                 );
1368                         }
1369                         $parts = implode( $sep, $msgs );
1370                         $ntl = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1371                         $out->setSquidMaxage( 0 );
1372                 }
1373
1374                 return $ntl;
1375         }
1376
1377         /**
1378          * Get a cached notice
1379          *
1380          * @param $name String: message name, or 'default' for $wgSiteNotice
1381          * @return String: HTML fragment
1382          */
1383         private function getCachedNotice( $name ) {
1384                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1385
1386                 wfProfileIn( __METHOD__ );
1387
1388                 $needParse = false;
1389
1390                 if( $name === 'default' ) {
1391                         // special case
1392                         global $wgSiteNotice;
1393                         $notice = $wgSiteNotice;
1394                         if( empty( $notice ) ) {
1395                                 wfProfileOut( __METHOD__ );
1396                                 return false;
1397                         }
1398                 } else {
1399                         $msg = $this->msg( $name )->inContentLanguage();
1400                         if( $msg->isDisabled() ) {
1401                                 wfProfileOut( __METHOD__ );
1402                                 return false;
1403                         }
1404                         $notice = $msg->plain();
1405                 }
1406
1407                 // Use the extra hash appender to let eg SSL variants separately cache.
1408                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1409                 $cachedNotice = $parserMemc->get( $key );
1410                 if( is_array( $cachedNotice ) ) {
1411                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1412                                 $notice = $cachedNotice['html'];
1413                         } else {
1414                                 $needParse = true;
1415                         }
1416                 } else {
1417                         $needParse = true;
1418                 }
1419
1420                 if ( $needParse ) {
1421                         $parsed = $this->getOutput()->parse( $notice );
1422                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1423                         $notice = $parsed;
1424                 }
1425
1426                 $notice = Html::rawElement( 'div', array( 'id' => 'localNotice',
1427                         'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $notice );
1428                 wfProfileOut( __METHOD__ );
1429                 return $notice;
1430         }
1431
1432         /**
1433          * Get a notice based on page's namespace
1434          *
1435          * @return String: HTML fragment
1436          */
1437         function getNamespaceNotice() {
1438                 wfProfileIn( __METHOD__ );
1439
1440                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1441                 $namespaceNotice = $this->getCachedNotice( $key );
1442                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1443                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1444                 } else {
1445                         $namespaceNotice = '';
1446                 }
1447
1448                 wfProfileOut( __METHOD__ );
1449                 return $namespaceNotice;
1450         }
1451
1452         /**
1453          * Get the site notice
1454          *
1455          * @return String: HTML fragment
1456          */
1457         function getSiteNotice() {
1458                 wfProfileIn( __METHOD__ );
1459                 $siteNotice = '';
1460
1461                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1462                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1463                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1464                         } else {
1465                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1466                                 if ( !$anonNotice ) {
1467                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1468                                 } else {
1469                                         $siteNotice = $anonNotice;
1470                                 }
1471                         }
1472                         if ( !$siteNotice ) {
1473                                 $siteNotice = $this->getCachedNotice( 'default' );
1474                         }
1475                 }
1476
1477                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1478                 wfProfileOut( __METHOD__ );
1479                 return $siteNotice;
1480         }
1481
1482         /**
1483          * Create a section edit link.  This supersedes editSectionLink() and
1484          * editSectionLinkForOther().
1485          *
1486          * @param $nt      Title  The title being linked to (may not be the same as
1487          *   $wgTitle, if the section is included from a template)
1488          * @param $section string The designation of the section being pointed to,
1489          *   to be included in the link, like "&section=$section"
1490          * @param $tooltip string The tooltip to use for the link: will be escaped
1491          *   and wrapped in the 'editsectionhint' message
1492          * @param $lang    string Language code
1493          * @return         string HTML to use for edit link
1494          */
1495         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1496                 // HTML generated here should probably have userlangattributes
1497                 // added to it for LTR text on RTL pages
1498                 $attribs = array();
1499                 if ( !is_null( $tooltip ) ) {
1500                         # Bug 25462: undo double-escaping.
1501                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1502                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1503                 }
1504                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1505                         $attribs,
1506                         array( 'action' => 'edit', 'section' => $section ),
1507                         array( 'noclasses', 'known' )
1508                 );
1509
1510                 # Run the old hook.  This takes up half of the function . . . hopefully
1511                 # we can rid of it someday.
1512                 $attribs = '';
1513                 if ( $tooltip ) {
1514                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1515                         $attribs = " title=\"$attribs\"";
1516                 }
1517                 $result = null;
1518                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1519                 if ( !is_null( $result ) ) {
1520                         # For reverse compatibility, add the brackets *after* the hook is
1521                         # run, and even add them to hook-provided text.  (This is the main
1522                         # reason that the EditSectionLink hook is deprecated in favor of
1523                         # DoEditSectionLink: it can't change the brackets or the span.)
1524                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1525                         return "<span class=\"editsection\">$result</span>";
1526                 }
1527
1528                 # Add the brackets and the span, and *then* run the nice new hook, with
1529                 # clean and non-redundant arguments.
1530                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1531                 $result = "<span class=\"editsection\">$result</span>";
1532
1533                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1534                 return $result;
1535         }
1536
1537         /**
1538          * Use PHP's magic __call handler to intercept legacy calls to the linker
1539          * for backwards compatibility.
1540          *
1541          * @param $fname String Name of called method
1542          * @param $args Array Arguments to the method
1543          */
1544         function __call( $fname, $args ) {
1545                 $realFunction = array( 'Linker', $fname );
1546                 if ( is_callable( $realFunction ) ) {
1547                         return call_user_func_array( $realFunction, $args );
1548                 } else {
1549                         $className = get_class( $this );
1550                         throw new MWException( "Call to undefined method $className::$fname" );
1551                 }
1552         }
1553
1554 }