includes/Skin.php

   1 <?php
   2 /**
   3  * Base class for all skins.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * @defgroup Skins Skins
  25  */
  26
  27 /**
  28  * The main skin class that provide methods and properties for all other skins.
  29  * This base class is also the "Standard" skin.
  30  *
  31  * See docs/skin.txt for more information.
  32  *
  33  * @ingroup Skins
  34  */
  35 abstract class Skin extends ContextSource {
  36         protected $skinname = 'standard';
  37         protected $mRelevantTitle = null;
  38         protected $mRelevantUser = null;
  39
  40         /**
  41          * Fetch the set of available skins.
  42          * @return array associative array of strings
  43          */
  44         static function getSkinNames() {
  45                 global $wgValidSkinNames;
  46                 static $skinsInitialised = false;
  47
  48                 if ( !$skinsInitialised || !count( $wgValidSkinNames ) ) {
  49                         # Get a list of available skins
  50                         # Build using the regular expression '^(.*).php$'
  51                         # Array keys are all lower case, array value keep the case used by filename
  52                         #
  53                         wfProfileIn( __METHOD__ . '-init' );
  54
  55                         global $wgStyleDirectory;
  56
  57                         $skinDir = dir( $wgStyleDirectory );
  58
  59                         # while code from www.php.net
  60                         while ( false !== ( $file = $skinDir->read() ) ) {
  61                                 // Skip non-PHP files, hidden files, and '.dep' includes
  62                                 $matches = array();
  63
  64                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  65                                         $aSkin = $matches[1];
  66                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  67                                 }
  68                         }
  69                         $skinDir->close();
  70                         $skinsInitialised = true;
  71                         wfProfileOut( __METHOD__ . '-init' );
  72                 }
  73                 return $wgValidSkinNames;
  74         }
  75
  76         /**
  77          * Fetch the skinname messages for available skins.
  78          * @return array of strings
  79          */
  80         static function getSkinNameMessages() {
  81                 $messages = array();
  82                 foreach( self::getSkinNames() as $skinKey => $skinName ) {
  83                         $messages[] = "skinname-$skinKey";
  84                 }
  85                 return $messages;
  86         }
  87
  88         /**
  89          * Fetch the list of usable skins in regards to $wgSkipSkins.
  90          * Useful for Special:Preferences and other places where you
  91          * only want to show skins users _can_ use.
  92          * @return array of strings
  93          */
  94         public static function getUsableSkins() {
  95                 global $wgSkipSkins;
  96
  97                 $usableSkins = self::getSkinNames();
  98
  99                 foreach ( $wgSkipSkins as $skip ) {
 100                         unset( $usableSkins[$skip] );
 101                 }
 102
 103                 return $usableSkins;
 104         }
 105
 106         /**
 107          * Normalize a skin preference value to a form that can be loaded.
 108          * If a skin can't be found, it will fall back to the configured
 109          * default (or the old 'Classic' skin if that's broken).
 110          * @param $key String: 'monobook', 'standard', etc.
 111          * @return string
 112          */
 113         static function normalizeKey( $key ) {
 114                 global $wgDefaultSkin;
 115
 116                 $skinNames = Skin::getSkinNames();
 117
 118                 if ( $key == '' || $key == 'default' ) {
 119                         // Don't return the default immediately;
 120                         // in a misconfiguration we need to fall back.
 121                         $key = $wgDefaultSkin;
 122                 }
 123
 124                 if ( isset( $skinNames[$key] ) ) {
 125                         return $key;
 126                 }
 127
 128                 // Older versions of the software used a numeric setting
 129                 // in the user preferences.
 130                 $fallback = array(
 131                         0 => $wgDefaultSkin,
 132                         1 => 'nostalgia',
 133                         2 => 'cologneblue'
 134                 );
 135
 136                 if ( isset( $fallback[$key] ) ) {
 137                         $key = $fallback[$key];
 138                 }
 139
 140                 if ( isset( $skinNames[$key] ) ) {
 141                         return $key;
 142                 } elseif ( isset( $skinNames[$wgDefaultSkin] ) ) {
 143                         return $wgDefaultSkin;
 144                 } else {
 145                         return 'vector';
 146                 }
 147         }
 148
 149         /**
 150          * Factory method for loading a skin of a given type
 151          * @param $key String: 'monobook', 'standard', etc.
 152          * @return Skin
 153          */
 154         static function &newFromKey( $key ) {
 155                 global $wgStyleDirectory;
 156
 157                 $key = Skin::normalizeKey( $key );
 158
 159                 $skinNames = Skin::getSkinNames();
 160                 $skinName = $skinNames[$key];
 161                 $className = "Skin{$skinName}";
 162
 163                 # Grab the skin class and initialise it.
 164                 if ( !MWInit::classExists( $className ) ) {
 165
 166                         if ( !defined( 'MW_COMPILED' ) ) {
 167                                 // Preload base classes to work around APC/PHP5 bug
 168                                 $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 169                                 if ( file_exists( $deps ) ) {
 170                                         include_once( $deps );
 171                                 }
 172                                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 173                         }
 174
 175                         # Check if we got if not failback to default skin
 176                         if ( !MWInit::classExists( $className ) ) {
 177                                 # DO NOT die if the class isn't found. This breaks maintenance
 178                                 # scripts and can cause a user account to be unrecoverable
 179                                 # except by SQL manipulation if a previously valid skin name
 180                                 # is no longer valid.
 181                                 wfDebug( "Skin class does not exist: $className\n" );
 182                                 $className = 'SkinVector';
 183                                 if ( !defined( 'MW_COMPILED' ) ) {
 184                                         require_once( "{$wgStyleDirectory}/Vector.php" );
 185                                 }
 186                         }
 187                 }
 188                 $skin = new $className( $key );
 189                 return $skin;
 190         }
 191
 192         /** @return string skin name */
 193         public function getSkinName() {
 194                 return $this->skinname;
 195         }
 196
 197         /**
 198          * @param $out OutputPage
 199          */
 200         function initPage( OutputPage $out ) {
 201                 wfProfileIn( __METHOD__ );
 202
 203                 $this->preloadExistence();
 204
 205                 wfProfileOut( __METHOD__ );
 206         }
 207
 208         /**
 209          * Preload the existence of three commonly-requested pages in a single query
 210          */
 211         function preloadExistence() {
 212                 $user = $this->getUser();
 213
 214                 // User/talk link
 215                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 216
 217                 // Other tab link
 218                 if ( $this->getTitle()->isSpecialPage() ) {
 219                         // nothing
 220                 } elseif ( $this->getTitle()->isTalkPage() ) {
 221                         $titles[] = $this->getTitle()->getSubjectPage();
 222                 } else {
 223                         $titles[] = $this->getTitle()->getTalkPage();
 224                 }
 225
 226                 $lb = new LinkBatch( $titles );
 227                 $lb->setCaller( __METHOD__ );
 228                 $lb->execute();
 229         }
 230
 231         /**
 232          * Get the current revision ID
 233          *
 234          * @return Integer
 235          */
 236         public function getRevisionId() {
 237                 return $this->getOutput()->getRevisionId();
 238         }
 239
 240         /**
 241          * Whether the revision displayed is the latest revision of the page
 242          *
 243          * @return Boolean
 244          */
 245         public function isRevisionCurrent() {
 246                 $revID = $this->getRevisionId();
 247                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 248         }
 249
 250         /**
 251          * Set the "relevant" title
 252          * @see self::getRelevantTitle()
 253          * @param $t Title object to use
 254          */
 255         public function setRelevantTitle( $t ) {
 256                 $this->mRelevantTitle = $t;
 257         }
 258
 259         /**
 260          * Return the "relevant" title.
 261          * A "relevant" title is not necessarily the actual title of the page.
 262          * Special pages like Special:MovePage use set the page they are acting on
 263          * as their "relevant" title, this allows the skin system to display things
 264          * such as content tabs which belong to to that page instead of displaying
 265          * a basic special page tab which has almost no meaning.
 266          *
 267          * @return Title
 268          */
 269         public function getRelevantTitle() {
 270                 if ( isset($this->mRelevantTitle) ) {
 271                         return $this->mRelevantTitle;
 272                 }
 273                 return $this->getTitle();
 274         }
 275
 276         /**
 277          * Set the "relevant" user
 278          * @see self::getRelevantUser()
 279          * @param $u User object to use
 280          */
 281         public function setRelevantUser( $u ) {
 282                 $this->mRelevantUser = $u;
 283         }
 284
 285         /**
 286          * Return the "relevant" user.
 287          * A "relevant" user is similar to a relevant title. Special pages like
 288          * Special:Contributions mark the user which they are relevant to so that
 289          * things like the toolbox can display the information they usually are only
 290          * able to display on a user's userpage and talkpage.
 291          * @return User
 292          */
 293         public function getRelevantUser() {
 294                 if ( isset($this->mRelevantUser) ) {
 295                         return $this->mRelevantUser;
 296                 }
 297                 $title = $this->getRelevantTitle();
 298                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 299                         $rootUser = strtok( $title->getText(), '/' );
 300                         if ( User::isIP( $rootUser ) ) {
 301                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 302                         } else {
 303                                 $user = User::newFromName( $rootUser, false );
 304                                 if ( $user && $user->isLoggedIn() ) {
 305                                         $this->mRelevantUser = $user;
 306                                 }
 307                         }
 308                         return $this->mRelevantUser;
 309                 }
 310                 return null;
 311         }
 312
 313         /**
 314          * Outputs the HTML generated by other functions.
 315          * @param $out OutputPage
 316          */
 317         abstract function outputPage( OutputPage $out = null );
 318
 319         /**
 320          * @param $data array
 321          * @return string
 322          */
 323         static function makeVariablesScript( $data ) {
 324                 if ( $data ) {
 325                         return Html::inlineScript(
 326                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 327                         );
 328                 } else {
 329                         return '';
 330                 }
 331         }
 332
 333         /**
 334          * Make a <script> tag containing global variables
 335          *
 336          * @deprecated in 1.19
 337          * @param $unused
 338          * @return string HTML fragment
 339          */
 340         public static function makeGlobalVariablesScript( $unused ) {
 341                 global $wgOut;
 342
 343                 wfDeprecated( __METHOD__, '1.19' );
 344
 345                 return self::makeVariablesScript( $wgOut->getJSVars() );
 346         }
 347
 348         /**
 349          * Get the query to generate a dynamic stylesheet
 350          *
 351          * @return array
 352          */
 353         public static function getDynamicStylesheetQuery() {
 354                 global $wgSquidMaxage;
 355
 356                 return array(
 357                                 'action' => 'raw',
 358                                 'maxage' => $wgSquidMaxage,
 359                                 'usemsgcache' => 'yes',
 360                                 'ctype' => 'text/css',
 361                                 'smaxage' => $wgSquidMaxage,
 362                         );
 363         }
 364
 365         /**
 366          * Add skin specific stylesheets
 367          * Calling this method with an $out of anything but the same OutputPage
 368          * inside ->getOutput() is deprecated. The $out arg is kept
 369          * for compatibility purposes with skins.
 370          * @param $out OutputPage
 371          * @delete
 372          */
 373         abstract function setupSkinUserCss( OutputPage $out );
 374
 375         /**
 376          * TODO: document
 377          * @param $title Title
 378          * @return String
 379          */
 380         function getPageClasses( $title ) {
 381                 $numeric = 'ns-' . $title->getNamespace();
 382
 383                 if ( $title->isSpecialPage() ) {
 384                         $type = 'ns-special';
 385                         // bug 23315: provide a class based on the canonical special page name without subpages
 386                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 387                         if ( $canonicalName ) {
 388                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 389                         } else {
 390                                 $type .= ' mw-invalidspecialpage';
 391                         }
 392                 } elseif ( $title->isTalkPage() ) {
 393                         $type = 'ns-talk';
 394                 } else {
 395                         $type = 'ns-subject';
 396                 }
 397
 398                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 399
 400                 return "$numeric $type $name";
 401         }
 402
 403         /**
 404          * This will be called by OutputPage::headElement when it is creating the
 405          * <body> tag, skins can override it if they have a need to add in any
 406          * body attributes or classes of their own.
 407          * @param $out OutputPage
 408          * @param $bodyAttrs Array
 409          */
 410         function addToBodyAttributes( $out, &$bodyAttrs ) {
 411                 // does nothing by default
 412         }
 413
 414         /**
 415          * URL to the logo
 416          * @return String
 417          */
 418         function getLogo() {
 419                 global $wgLogo;
 420                 return $wgLogo;
 421         }
 422
 423         /**
 424          * @return string
 425          */
 426         function getCategoryLinks() {
 427                 global $wgUseCategoryBrowser;
 428
 429                 $out = $this->getOutput();
 430                 $allCats = $out->getCategoryLinks();
 431
 432                 if ( !count( $allCats ) ) {
 433                         return '';
 434                 }
 435
 436                 $embed = "<li>";
 437                 $pop = "</li>";
 438
 439                 $s = '';
 440                 $colon = $this->msg( 'colon-separator' )->escaped();
 441
 442                 if ( !empty( $allCats['normal'] ) ) {
 443                         $t = $embed . implode( "{$pop}{$embed}" , $allCats['normal'] ) . $pop;
 444
 445                         $msg = $this->msg( 'pagecategories', count( $allCats['normal'] ) )->escaped();
 446                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 447                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 448                                 Linker::link( Title::newFromText( $linkPage ), $msg )
 449                                 . $colon . '<ul>' . $t . '</ul>' . '</div>';
 450                 }
 451
 452                 # Hidden categories
 453                 if ( isset( $allCats['hidden'] ) ) {
 454                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 455                                 $class = ' mw-hidden-cats-user-shown';
 456                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 457                                 $class = ' mw-hidden-cats-ns-shown';
 458                         } else {
 459                                 $class = ' mw-hidden-cats-hidden';
 460                         }
 461
 462                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 463                                 $this->msg( 'hidden-categories', count( $allCats['hidden'] ) )->escaped() .
 464                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}" , $allCats['hidden'] ) . $pop . '</ul>' .
 465                                 '</div>';
 466                 }
 467
 468                 # optional 'dmoz-like' category browser. Will be shown under the list
 469                 # of categories an article belong to
 470                 if ( $wgUseCategoryBrowser ) {
 471                         $s .= '<br /><hr />';
 472
 473                         # get a big array of the parents tree
 474                         $parenttree = $this->getTitle()->getParentCategoryTree();
 475                         # Skin object passed by reference cause it can not be
 476                         # accessed under the method subfunction drawCategoryBrowser
 477                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 478                         # Clean out bogus first entry and sort them
 479                         unset( $tempout[0] );
 480                         asort( $tempout );
 481                         # Output one per line
 482                         $s .= implode( "<br />\n", $tempout );
 483                 }
 484
 485                 return $s;
 486         }
 487
 488         /**
 489          * Render the array as a serie of links.
 490          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 491          * @return String separated by &gt;, terminate with "\n"
 492          */
 493         function drawCategoryBrowser( $tree ) {
 494                 $return = '';
 495
 496                 foreach ( $tree as $element => $parent ) {
 497                         if ( empty( $parent ) ) {
 498                                 # element start a new list
 499                                 $return .= "\n";
 500                         } else {
 501                                 # grab the others elements
 502                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 503                         }
 504
 505                         # add our current element to the list
 506                         $eltitle = Title::newFromText( $element );
 507                         $return .=  Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 508                 }
 509
 510                 return $return;
 511         }
 512
 513         /**
 514          * @return string
 515          */
 516         function getCategories() {
 517                 $out = $this->getOutput();
 518
 519                 $catlinks = $this->getCategoryLinks();
 520
 521                 $classes = 'catlinks';
 522
 523                 // Check what we're showing
 524                 $allCats = $out->getCategoryLinks();
 525                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 526                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 527
 528                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 529                         $classes .= ' catlinks-allhidden';
 530                 }
 531
 532                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 533         }
 534
 535         /**
 536          * This runs a hook to allow extensions placing their stuff after content
 537          * and article metadata (e.g. categories).
 538          * Note: This function has nothing to do with afterContent().
 539          *
 540          * This hook is placed here in order to allow using the same hook for all
 541          * skins, both the SkinTemplate based ones and the older ones, which directly
 542          * use this class to get their data.
 543          *
 544          * The output of this function gets processed in SkinTemplate::outputPage() for
 545          * the SkinTemplate based skins, all other skins should directly echo it.
 546          *
 547          * @return String, empty by default, if not changed by any hook function.
 548          */
 549         protected function afterContentHook() {
 550                 $data = '';
 551
 552                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 553                         // adding just some spaces shouldn't toggle the output
 554                         // of the whole <div/>, so we use trim() here
 555                         if ( trim( $data ) != '' ) {
 556                                 // Doing this here instead of in the skins to
 557                                 // ensure that the div has the same ID in all
 558                                 // skins
 559                                 $data = "<div id='mw-data-after-content'>\n" .
 560                                         "\t$data\n" .
 561                                         "</div>\n";
 562                         }
 563                 } else {
 564                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 565                 }
 566
 567                 return $data;
 568         }
 569
 570         /**
 571          * Generate debug data HTML for displaying at the bottom of the main content
 572          * area.
 573          * @return String HTML containing debug data, if enabled (otherwise empty).
 574          */
 575         protected function generateDebugHTML() {
 576                 global $wgShowDebug;
 577
 578                 $html = MWDebug::getDebugHTML( $this->getContext() );
 579
 580                 if ( $wgShowDebug ) {
 581                         $listInternals = $this->formatDebugHTML( $this->getOutput()->mDebugtext );
 582                         $html .= "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 583                                 $listInternals . "</ul>\n";
 584                 }
 585
 586                 return $html;
 587         }
 588
 589         /**
 590          * @param $debugText string
 591          * @return string
 592          */
 593         private function formatDebugHTML( $debugText ) {
 594                 global $wgDebugTimestamps;
 595
 596                 $lines = explode( "\n", $debugText );
 597                 $curIdent = 0;
 598                 $ret = '<li>';
 599
 600                 foreach ( $lines as $line ) {
 601                         $pre = '';
 602                         if ( $wgDebugTimestamps ) {
 603                                 $matches = array();
 604                                 if ( preg_match( '/^(\d+\.\d+ {1,3}\d+.\dM\s{2})/', $line, $matches ) ) {
 605                                         $pre = $matches[1];
 606                                         $line = substr( $line, strlen( $pre ) );
 607                                 }
 608                         }
 609                         $display = ltrim( $line );
 610                         $ident = strlen( $line ) - strlen( $display );
 611                         $diff = $ident - $curIdent;
 612
 613                         $display = $pre . $display;
 614                         if ( $display == '' ) {
 615                                 $display = "\xc2\xa0";
 616                         }
 617
 618                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 619                                 $ident = $curIdent;
 620                                 $diff = 0;
 621                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 622                         } else {
 623                                 $display = htmlspecialchars( $display );
 624                         }
 625
 626                         if ( $diff < 0 ) {
 627                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 628                         } elseif ( $diff == 0 ) {
 629                                 $ret .= "</li><li>\n";
 630                         } else {
 631                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 632                         }
 633                         $ret .= "<tt>$display</tt>\n";
 634
 635                         $curIdent = $ident;
 636                 }
 637
 638                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 639
 640                 return $ret;
 641         }
 642
 643         /**
 644          * This gets called shortly before the </body> tag.
 645          *
 646          * @return String HTML-wrapped JS code to be put before </body>
 647          */
 648         function bottomScripts() {
 649                 // TODO and the suckage continues. This function is really just a wrapper around
 650                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 651                 // up at some point
 652                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 653                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 654
 655                 return $bottomScriptText;
 656         }
 657
 658         /**
 659          * Text with the permalink to the source page,
 660          * usually shown on the footer of a printed page
 661          *
 662          * @return string HTML text with an URL
 663          */
 664         function printSource() {
 665                 $oldid = $this->getRevisionId();
 666                 if ( $oldid ) {
 667                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid ) ) );
 668                 } else {
 669                         // oldid not available for non existing pages
 670                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
 671                 }
 672                 return $this->msg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' )->text();
 673         }
 674
 675         /**
 676          * @return String
 677          */
 678         function getUndeleteLink() {
 679                 $action = $this->getRequest()->getVal( 'action', 'view' );
 680
 681                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) &&
 682                         ( $this->getTitle()->getArticleID() == 0 || $action == 'history' ) ) {
 683                         $n = $this->getTitle()->isDeleted();
 684
 685
 686                         if ( $n ) {
 687                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 688                                         $msg = 'thisisdeleted';
 689                                 } else {
 690                                         $msg = 'viewdeleted';
 691                                 }
 692
 693                                 return $this->msg( $msg )->rawParams(
 694                                         Linker::linkKnown(
 695                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 696                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 697                                         )->text();
 698                         }
 699                 }
 700
 701                 return '';
 702         }
 703
 704         /**
 705          * @return string
 706          */
 707         function subPageSubtitle() {
 708                 global $wgLang;
 709                 $out = $this->getOutput();
 710                 $subpages = '';
 711
 712                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 713                         return $subpages;
 714                 }
 715
 716                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 717                         $ptext = $this->getTitle()->getPrefixedText();
 718                         if ( preg_match( '/\//', $ptext ) ) {
 719                                 $links = explode( '/', $ptext );
 720                                 array_pop( $links );
 721                                 $c = 0;
 722                                 $growinglink = '';
 723                                 $display = '';
 724
 725                                 foreach ( $links as $link ) {
 726                                         $growinglink .= $link;
 727                                         $display .= $link;
 728                                         $linkObj = Title::newFromText( $growinglink );
 729
 730                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 731                                                 $getlink = Linker::linkKnown(
 732                                                         $linkObj,
 733                                                         htmlspecialchars( $display )
 734                                                 );
 735
 736                                                 $c++;
 737
 738                                                 if ( $c > 1 ) {
 739                                                         $subpages .= $wgLang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
 740                                                 } else  {
 741                                                         $subpages .= '&lt; ';
 742                                                 }
 743
 744                                                 $subpages .= $getlink;
 745                                                 $display = '';
 746                                         } else {
 747                                                 $display .= '/';
 748                                         }
 749                                         $growinglink .= '/';
 750                                 }
 751                         }
 752                 }
 753
 754                 return $subpages;
 755         }
 756
 757         /**
 758          * Returns true if the IP should be shown in the header
 759          * @return Bool
 760          */
 761         function showIPinHeader() {
 762                 global $wgShowIPinHeader;
 763                 return $wgShowIPinHeader && session_id() != '';
 764         }
 765
 766         /**
 767          * @return String
 768          */
 769         function getSearchLink() {
 770                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 771                 return $searchPage->getLocalURL();
 772         }
 773
 774         /**
 775          * @return string
 776          */
 777         function escapeSearchLink() {
 778                 return htmlspecialchars( $this->getSearchLink() );
 779         }
 780
 781         /**
 782          * @param $type string
 783          * @return string
 784          */
 785         function getCopyright( $type = 'detect' ) {
 786                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgContLang;
 787
 788                 if ( $type == 'detect' ) {
 789                         if ( !$this->isRevisionCurrent() && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled() ) {
 790                                 $type = 'history';
 791                         } else {
 792                                 $type = 'normal';
 793                         }
 794                 }
 795
 796                 if ( $type == 'history' ) {
 797                         $msg = 'history_copyright';
 798                 } else {
 799                         $msg = 'copyright';
 800                 }
 801
 802                 if ( $wgRightsPage ) {
 803                         $title = Title::newFromText( $wgRightsPage );
 804                         $link = Linker::linkKnown( $title, $wgRightsText );
 805                 } elseif ( $wgRightsUrl ) {
 806                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 807                 } elseif ( $wgRightsText ) {
 808                         $link = $wgRightsText;
 809                 } else {
 810                         # Give up now
 811                         return '';
 812                 }
 813
 814                 // Allow for site and per-namespace customization of copyright notice.
 815                 $forContent = true;
 816
 817                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 818
 819                 $msgObj = $this->msg( $msg )->rawParams( $link );
 820                 if ( $forContent ) {
 821                         $msg = $msgObj->inContentLanguage()->text();
 822                         if ( $this->getLanguage()->getCode() !== $wgContLang->getCode() ) {
 823                                 $msg = Html::rawElement( 'span', array( 'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $msg );
 824                         }
 825                         return $msg;
 826                 } else {
 827                         return $msgObj->text();
 828                 }
 829         }
 830
 831         /**
 832          * @return null|string
 833          */
 834         function getCopyrightIcon() {
 835                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 836
 837                 $out = '';
 838
 839                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 840                         $out = $wgCopyrightIcon;
 841                 } elseif ( $wgRightsIcon ) {
 842                         $icon = htmlspecialchars( $wgRightsIcon );
 843
 844                         if ( $wgRightsUrl ) {
 845                                 $url = htmlspecialchars( $wgRightsUrl );
 846                                 $out .= '<a href="' . $url . '">';
 847                         }
 848
 849                         $text = htmlspecialchars( $wgRightsText );
 850                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 851
 852                         if ( $wgRightsUrl ) {
 853                                 $out .= '</a>';
 854                         }
 855                 }
 856
 857                 return $out;
 858         }
 859
 860         /**
 861          * Gets the powered by MediaWiki icon.
 862          * @return string
 863          */
 864         function getPoweredBy() {
 865                 global $wgStylePath;
 866
 867                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 868                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 869                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 870                 return $text;
 871         }
 872
 873         /**
 874          * Get the timestamp of the latest revision, formatted in user language
 875          *
 876          * @return String
 877          */
 878         protected function lastModified() {
 879                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 880
 881                 # No cached timestamp, load it from the database
 882                 if ( $timestamp === null ) {
 883                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 884                 }
 885
 886                 if ( $timestamp ) {
 887                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 888                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 889                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->text();
 890                 } else {
 891                         $s = '';
 892                 }
 893
 894                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 895                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->text() . '</strong>';
 896                 }
 897
 898                 return $s;
 899         }
 900
 901         /**
 902          * @param $align string
 903          * @return string
 904          */
 905         function logoText( $align = '' ) {
 906                 if ( $align != '' ) {
 907                         $a = " align='{$align}'";
 908                 } else {
 909                         $a = '';
 910                 }
 911
 912                 $mp = $this->msg( 'mainpage' )->escaped();
 913                 $mptitle = Title::newMainPage();
 914                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 915
 916                 $logourl = $this->getLogo();
 917                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 918
 919                 return $s;
 920         }
 921
 922         /**
 923          * Renders a $wgFooterIcons icon acording to the method's arguments
 924          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
 925          * @param $withImage Bool|String: Whether to use the icon's image or output a text-only footericon
 926          * @return String HTML
 927          */
 928         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 929                 if ( is_string( $icon ) ) {
 930                         $html = $icon;
 931                 } else { // Assuming array
 932                         $url = isset($icon["url"]) ? $icon["url"] : null;
 933                         unset( $icon["url"] );
 934                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 935                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
 936                         } else {
 937                                 $html = htmlspecialchars( $icon["alt"] );
 938                         }
 939                         if ( $url ) {
 940                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
 941                         }
 942                 }
 943                 return $html;
 944         }
 945
 946         /**
 947          * Gets the link to the wiki's main page.
 948          * @return string
 949          */
 950         function mainPageLink() {
 951                 $s = Linker::linkKnown(
 952                         Title::newMainPage(),
 953                         $this->msg( 'mainpage' )->escaped()
 954                 );
 955
 956                 return $s;
 957         }
 958
 959         /**
 960          * @param $desc
 961          * @param $page
 962          * @return string
 963          */
 964         public function footerLink( $desc, $page ) {
 965                 // if the link description has been set to "-" in the default language,
 966                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
 967                         // then it is disabled, for all languages.
 968                         return '';
 969                 } else {
 970                         // Otherwise, we display the link for the user, described in their
 971                         // language (which may or may not be the same as the default language),
 972                         // but we make the link target be the one site-wide page.
 973                         $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
 974
 975                         return Linker::linkKnown(
 976                                 $title,
 977                                 $this->msg( $desc )->escaped()
 978                         );
 979                 }
 980         }
 981
 982         /**
 983          * Gets the link to the wiki's privacy policy page.
 984          * @return String HTML
 985          */
 986         function privacyLink() {
 987                 return $this->footerLink( 'privacy', 'privacypage' );
 988         }
 989
 990         /**
 991          * Gets the link to the wiki's about page.
 992          * @return String HTML
 993          */
 994         function aboutLink() {
 995                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 996         }
 997
 998         /**
 999          * Gets the link to the wiki's general disclaimers page.
1000          * @return String HTML
1001          */
1002         function disclaimerLink() {
1003                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1004         }
1005
1006         /**
1007          * Return URL options for the 'edit page' link.
1008          * This may include an 'oldid' specifier, if the current page view is such.
1009          *
1010          * @return array
1011          * @private
1012          */
1013         function editUrlOptions() {
1014                 $options = array( 'action' => 'edit' );
1015
1016                 if ( !$this->isRevisionCurrent() ) {
1017                         $options['oldid'] = intval( $this->getRevisionId() );
1018                 }
1019
1020                 return $options;
1021         }
1022
1023         /**
1024          * @param $id User|int
1025          * @return bool
1026          */
1027         function showEmailUser( $id ) {
1028                 if ( $id instanceof User ) {
1029                         $targetUser = $id;
1030                 } else {
1031                         $targetUser = User::newFromId( $id );
1032                 }
1033                 return $this->getUser()->canSendEmail() && # the sending user must have a confirmed email address
1034                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1035         }
1036
1037         /**
1038          * Return a fully resolved style path url to images or styles stored in the common folder.
1039          * This method returns a url resolved using the configured skin style path
1040          * and includes the style version inside of the url.
1041          * @param $name String: The name or path of a skin resource file
1042          * @return String The fully resolved style path url including styleversion
1043          */
1044         function getCommonStylePath( $name ) {
1045                 global $wgStylePath, $wgStyleVersion;
1046                 return "$wgStylePath/common/$name?$wgStyleVersion";
1047         }
1048
1049         /**
1050          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
1051          * This method returns a url resolved using the configured skin style path
1052          * and includes the style version inside of the url.
1053          * @param $name String: The name or path of a skin resource file
1054          * @return String The fully resolved style path url including styleversion
1055          */
1056         function getSkinStylePath( $name ) {
1057                 global $wgStylePath, $wgStyleVersion;
1058                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1059         }
1060
1061         /* these are used extensively in SkinTemplate, but also some other places */
1062
1063         /**
1064          * @param $urlaction string
1065          * @return String
1066          */
1067         static function makeMainPageUrl( $urlaction = '' ) {
1068                 $title = Title::newMainPage();
1069                 self::checkTitle( $title, '' );
1070
1071                 return $title->getLocalURL( $urlaction );
1072         }
1073
1074         /**
1075          * @param $name string
1076          * @param $urlaction string
1077          * @return String
1078          */
1079         static function makeSpecialUrl( $name, $urlaction = '' ) {
1080                 $title = SpecialPage::getSafeTitleFor( $name );
1081                 return $title->getLocalURL( $urlaction );
1082         }
1083
1084         /**
1085          * @param $name string
1086          * @param $subpage string
1087          * @param $urlaction string
1088          * @return String
1089          */
1090         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1091                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1092                 return $title->getLocalURL( $urlaction );
1093         }
1094
1095         /**
1096          * @param $name string
1097          * @param $urlaction string
1098          * @return String
1099          */
1100         static function makeI18nUrl( $name, $urlaction = '' ) {
1101                 $title = Title::newFromText( wfMsgForContent( $name ) );
1102                 self::checkTitle( $title, $name );
1103                 return $title->getLocalURL( $urlaction );
1104         }
1105
1106         /**
1107          * @param $name string
1108          * @param $urlaction string
1109          * @return String
1110          */
1111         static function makeUrl( $name, $urlaction = '' ) {
1112                 $title = Title::newFromText( $name );
1113                 self::checkTitle( $title, $name );
1114
1115                 return $title->getLocalURL( $urlaction );
1116         }
1117
1118         /**
1119          * If url string starts with http, consider as external URL, else
1120          * internal
1121          * @param $name String
1122          * @return String URL
1123          */
1124         static function makeInternalOrExternalUrl( $name ) {
1125                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1126                         return $name;
1127                 } else {
1128                         return self::makeUrl( $name );
1129                 }
1130         }
1131
1132         /**
1133          * this can be passed the NS number as defined in Language.php
1134          * @param $name
1135          * @param $urlaction string
1136          * @param $namespace int
1137          * @return String
1138          */
1139         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1140                 $title = Title::makeTitleSafe( $namespace, $name );
1141                 self::checkTitle( $title, $name );
1142
1143                 return $title->getLocalURL( $urlaction );
1144         }
1145
1146         /**
1147          * these return an array with the 'href' and boolean 'exists'
1148          * @param $name
1149          * @param $urlaction string
1150          * @return array
1151          */
1152         static function makeUrlDetails( $name, $urlaction = '' ) {
1153                 $title = Title::newFromText( $name );
1154                 self::checkTitle( $title, $name );
1155
1156                 return array(
1157                         'href' => $title->getLocalURL( $urlaction ),
1158                         'exists' => $title->getArticleID() != 0,
1159                 );
1160         }
1161
1162         /**
1163          * Make URL details where the article exists (or at least it's convenient to think so)
1164          * @param $name String Article name
1165          * @param $urlaction String
1166          * @return Array
1167          */
1168         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1169                 $title = Title::newFromText( $name );
1170                 self::checkTitle( $title, $name );
1171
1172                 return array(
1173                         'href' => $title->getLocalURL( $urlaction ),
1174                         'exists' => true
1175                 );
1176         }
1177
1178         /**
1179          * make sure we have some title to operate on
1180          *
1181          * @param $title Title
1182          * @param $name string
1183          */
1184         static function checkTitle( &$title, $name ) {
1185                 if ( !is_object( $title ) ) {
1186                         $title = Title::newFromText( $name );
1187                         if ( !is_object( $title ) ) {
1188                                 $title = Title::newFromText( '--error: link target missing--' );
1189                         }
1190                 }
1191         }
1192
1193         /**
1194          * Build an array that represents the sidebar(s), the navigation bar among them
1195          *
1196          * @return array
1197          */
1198         function buildSidebar() {
1199                 global $wgMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1200                 wfProfileIn( __METHOD__ );
1201
1202                 $key = wfMemcKey( 'sidebar', $this->getLanguage()->getCode() );
1203
1204                 if ( $wgEnableSidebarCache ) {
1205                         $cachedsidebar = $wgMemc->get( $key );
1206                         if ( $cachedsidebar ) {
1207                                 wfProfileOut( __METHOD__ );
1208                                 return $cachedsidebar;
1209                         }
1210                 }
1211
1212                 $bar = array();
1213                 $this->addToSidebar( $bar, 'sidebar' );
1214
1215                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1216                 if ( $wgEnableSidebarCache ) {
1217                         $wgMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1218                 }
1219
1220                 wfProfileOut( __METHOD__ );
1221                 return $bar;
1222         }
1223         /**
1224          * Add content from a sidebar system message
1225          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1226          *
1227          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1228          *
1229          * @param $bar array
1230          * @param $message String
1231          */
1232         function addToSidebar( &$bar, $message ) {
1233                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1234         }
1235
1236         /**
1237          * Add content from plain text
1238          * @since 1.17
1239          * @param $bar array
1240          * @param $text string
1241          * @return Array
1242          */
1243         function addToSidebarPlain( &$bar, $text ) {
1244                 $lines = explode( "\n", $text );
1245
1246                 $heading = '';
1247
1248                 foreach ( $lines as $line ) {
1249                         if ( strpos( $line, '*' ) !== 0 ) {
1250                                 continue;
1251                         }
1252                         $line = rtrim( $line, "\r" ); // for Windows compat
1253
1254                         if ( strpos( $line, '**' ) !== 0 ) {
1255                                 $heading = trim( $line, '* ' );
1256                                 if ( !array_key_exists( $heading, $bar ) ) {
1257                                         $bar[$heading] = array();
1258                                 }
1259                         } else {
1260                                 $line = trim( $line, '* ' );
1261
1262                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1263                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1264                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1265                                         if ( count( $line ) !== 2 ) {
1266                                                 // Second sanity check, could be hit by people doing
1267                                                 // funky stuff with parserfuncs... (bug 33321)
1268                                                 continue;
1269                                         }
1270
1271                                         $extraAttribs = array();
1272
1273                                         $msgLink = $this->msg( $line[0] )->inContentLanguage();
1274                                         if ( $msgLink->exists() ) {
1275                                                 $link = $msgLink->text();
1276                                                 if ( $link == '-' ) {
1277                                                         continue;
1278                                                 }
1279                                         } else {
1280                                                 $link = $line[0];
1281                                         }
1282                                         $msgText = $this->msg( $line[1] );
1283                                         if ( $msgText->exists() ) {
1284                                                 $text = $msgText->text();
1285                                         } else {
1286                                                 $text = $line[1];
1287                                         }
1288
1289                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1290                                                 $href = $link;
1291
1292                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1293                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1294                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1295                                                         $extraAttribs['rel'] = 'nofollow';
1296                                                 }
1297
1298                                                 global $wgExternalLinkTarget;
1299                                                 if ( $wgExternalLinkTarget) {
1300                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1301                                                 }
1302                                         } else {
1303                                                 $title = Title::newFromText( $link );
1304
1305                                                 if ( $title ) {
1306                                                         $title = $title->fixSpecialName();
1307                                                         $href = $title->getLinkURL();
1308                                                 } else {
1309                                                         $href = 'INVALID-TITLE';
1310                                                 }
1311                                         }
1312
1313                                         $bar[$heading][] = array_merge( array(
1314                                                 'text' => $text,
1315                                                 'href' => $href,
1316                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1317                                                 'active' => false
1318                                         ), $extraAttribs );
1319                                 } else {
1320                                         continue;
1321                                 }
1322                         }
1323                 }
1324
1325                 return $bar;
1326         }
1327
1328         /**
1329          * Should we load mediawiki.legacy.wikiprintable?  Skins that have their own
1330          * print stylesheet should override this and return false.  (This is an
1331          * ugly hack to get Monobook to play nicely with OutputPage::headElement().)
1332          *
1333          * @return bool
1334          */
1335         public function commonPrintStylesheet() {
1336                 return true;
1337         }
1338
1339         /**
1340          * Gets new talk page messages for the current user.
1341          * @return MediaWiki message or if no new talk page messages, nothing
1342          */
1343         function getNewtalks() {
1344                 $out = $this->getOutput();
1345
1346                 $newtalks = $this->getUser()->getNewMessageLinks();
1347                 $ntl = '';
1348
1349                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1350                         $userTitle = $this->getUser()->getUserPage();
1351                         $userTalkTitle = $userTitle->getTalkPage();
1352
1353                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1354                                 $newMessagesLink = Linker::linkKnown(
1355                                         $userTalkTitle,
1356                                         $this->msg( 'newmessageslink' )->escaped(),
1357                                         array(),
1358                                         array( 'redirect' => 'no' )
1359                                 );
1360
1361                                 $newMessagesDiffLink = Linker::linkKnown(
1362                                         $userTalkTitle,
1363                                         $this->msg( 'newmessagesdifflink' )->escaped(),
1364                                         array(),
1365                                         array( 'diff' => 'cur' )
1366                                 );
1367
1368                                 $ntl = $this->msg(
1369                                         'youhavenewmessages',
1370                                         $newMessagesLink,
1371                                         $newMessagesDiffLink
1372                                 )->text();
1373                                 # Disable Squid cache
1374                                 $out->setSquidMaxage( 0 );
1375                         }
1376                 } elseif ( count( $newtalks ) ) {
1377                         // _>" " for BC <= 1.16
1378                         $sep = str_replace( '_', ' ', $this->msg( 'newtalkseparator' )->escaped() );
1379                         $msgs = array();
1380
1381                         foreach ( $newtalks as $newtalk ) {
1382                                 $msgs[] = Xml::element(
1383                                         'a',
1384                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1385                                 );
1386                         }
1387                         $parts = implode( $sep, $msgs );
1388                         $ntl = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1389                         $out->setSquidMaxage( 0 );
1390                 }
1391
1392                 return $ntl;
1393         }
1394
1395         /**
1396          * Get a cached notice
1397          *
1398          * @param $name String: message name, or 'default' for $wgSiteNotice
1399          * @return String: HTML fragment
1400          */
1401         private function getCachedNotice( $name ) {
1402                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1403
1404                 wfProfileIn( __METHOD__ );
1405
1406                 $needParse = false;
1407
1408                 if( $name === 'default' ) {
1409                         // special case
1410                         global $wgSiteNotice;
1411                         $notice = $wgSiteNotice;
1412                         if( empty( $notice ) ) {
1413                                 wfProfileOut( __METHOD__ );
1414                                 return false;
1415                         }
1416                 } else {
1417                         $msg = $this->msg( $name )->inContentLanguage();
1418                         if( $msg->isDisabled() ) {
1419                                 wfProfileOut( __METHOD__ );
1420                                 return false;
1421                         }
1422                         $notice = $msg->plain();
1423                 }
1424
1425                 // Use the extra hash appender to let eg SSL variants separately cache.
1426                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1427                 $cachedNotice = $parserMemc->get( $key );
1428                 if( is_array( $cachedNotice ) ) {
1429                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1430                                 $notice = $cachedNotice['html'];
1431                         } else {
1432                                 $needParse = true;
1433                         }
1434                 } else {
1435                         $needParse = true;
1436                 }
1437
1438                 if ( $needParse ) {
1439                         $parsed = $this->getOutput()->parse( $notice );
1440                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1441                         $notice = $parsed;
1442                 }
1443
1444                 $notice = Html::rawElement( 'div', array( 'id' => 'localNotice',
1445                         'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $notice );
1446                 wfProfileOut( __METHOD__ );
1447                 return $notice;
1448         }
1449
1450         /**
1451          * Get a notice based on page's namespace
1452          *
1453          * @return String: HTML fragment
1454          */
1455         function getNamespaceNotice() {
1456                 wfProfileIn( __METHOD__ );
1457
1458                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1459                 $namespaceNotice = $this->getCachedNotice( $key );
1460                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1461                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1462                 } else {
1463                         $namespaceNotice = '';
1464                 }
1465
1466                 wfProfileOut( __METHOD__ );
1467                 return $namespaceNotice;
1468         }
1469
1470         /**
1471          * Get the site notice
1472          *
1473          * @return String: HTML fragment
1474          */
1475         function getSiteNotice() {
1476                 wfProfileIn( __METHOD__ );
1477                 $siteNotice = '';
1478
1479                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1480                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1481                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1482                         } else {
1483                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1484                                 if ( !$anonNotice ) {
1485                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1486                                 } else {
1487                                         $siteNotice = $anonNotice;
1488                                 }
1489                         }
1490                         if ( !$siteNotice ) {
1491                                 $siteNotice = $this->getCachedNotice( 'default' );
1492                         }
1493                 }
1494
1495                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1496                 wfProfileOut( __METHOD__ );
1497                 return $siteNotice;
1498         }
1499
1500         /**
1501          * Create a section edit link.  This supersedes editSectionLink() and
1502          * editSectionLinkForOther().
1503          *
1504          * @param $nt      Title  The title being linked to (may not be the same as
1505          *   $wgTitle, if the section is included from a template)
1506          * @param $section string The designation of the section being pointed to,
1507          *   to be included in the link, like "&section=$section"
1508          * @param $tooltip string The tooltip to use for the link: will be escaped
1509          *   and wrapped in the 'editsectionhint' message
1510          * @param $lang    string Language code
1511          * @return         string HTML to use for edit link
1512          */
1513         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1514                 // HTML generated here should probably have userlangattributes
1515                 // added to it for LTR text on RTL pages
1516                 $attribs = array();
1517                 if ( !is_null( $tooltip ) ) {
1518                         # Bug 25462: undo double-escaping.
1519                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1520                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'replaceafter' ), $tooltip );
1521                 }
1522                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1523                         $attribs,
1524                         array( 'action' => 'edit', 'section' => $section ),
1525                         array( 'noclasses', 'known' )
1526                 );
1527
1528                 # Run the old hook.  This takes up half of the function . . . hopefully
1529                 # we can rid of it someday.
1530                 $attribs = '';
1531                 if ( $tooltip ) {
1532                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape', 'replaceafter' ), $tooltip );
1533                         $attribs = " title=\"$attribs\"";
1534                 }
1535                 $result = null;
1536                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1537                 if ( !is_null( $result ) ) {
1538                         # For reverse compatibility, add the brackets *after* the hook is
1539                         # run, and even add them to hook-provided text.  (This is the main
1540                         # reason that the EditSectionLink hook is deprecated in favor of
1541                         # DoEditSectionLink: it can't change the brackets or the span.)
1542                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1543                         return "<span class=\"editsection\">$result</span>";
1544                 }
1545
1546                 # Add the brackets and the span, and *then* run the nice new hook, with
1547                 # clean and non-redundant arguments.
1548                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1549                 $result = "<span class=\"editsection\">$result</span>";
1550
1551                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1552                 return $result;
1553         }
1554
1555         /**
1556          * Use PHP's magic __call handler to intercept legacy calls to the linker
1557          * for backwards compatibility.
1558          *
1559          * @param $fname String Name of called method
1560          * @param $args Array Arguments to the method
1561          * @return mixed
1562          */
1563         function __call( $fname, $args ) {
1564                 $realFunction = array( 'Linker', $fname );
1565                 if ( is_callable( $realFunction ) ) {
1566                         return call_user_func_array( $realFunction, $args );
1567                 } else {
1568                         $className = get_class( $this );
1569                         throw new MWException( "Call to undefined method $className::$fname" );
1570                 }
1571         }
1572
1573 }