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                         if ( $skinDir !== false && $skinDir !== null ) {
  60                                 # while code from www.php.net
  61                                 while ( false !== ( $file = $skinDir->read() ) ) {
  62                                         // Skip non-PHP files, hidden files, and '.dep' includes
  63                                         $matches = array();
  64
  65                                         if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  66                                                 $aSkin = $matches[1];
  67                                                 $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  68                                         }
  69                                 }
  70                                 $skinDir->close();
  71                         }
  72                         $skinsInitialised = true;
  73                         wfProfileOut( __METHOD__ . '-init' );
  74                 }
  75                 return $wgValidSkinNames;
  76         }
  77
  78         /**
  79          * Fetch the skinname messages for available skins.
  80          * @return array of strings
  81          */
  82         static function getSkinNameMessages() {
  83                 $messages = array();
  84                 foreach( self::getSkinNames() as $skinKey => $skinName ) {
  85                         $messages[] = "skinname-$skinKey";
  86                 }
  87                 return $messages;
  88         }
  89
  90         /**
  91          * Fetch the list of usable skins in regards to $wgSkipSkins.
  92          * Useful for Special:Preferences and other places where you
  93          * only want to show skins users _can_ use.
  94          * @return array of strings
  95          */
  96         public static function getUsableSkins() {
  97                 global $wgSkipSkins;
  98
  99                 $usableSkins = self::getSkinNames();
 100
 101                 foreach ( $wgSkipSkins as $skip ) {
 102                         unset( $usableSkins[$skip] );
 103                 }
 104
 105                 return $usableSkins;
 106         }
 107
 108         /**
 109          * Normalize a skin preference value to a form that can be loaded.
 110          * If a skin can't be found, it will fall back to the configured
 111          * default (or the old 'Classic' skin if that's broken).
 112          * @param string $key 'monobook', 'standard', etc.
 113          * @return string
 114          */
 115         static function normalizeKey( $key ) {
 116                 global $wgDefaultSkin;
 117
 118                 $skinNames = Skin::getSkinNames();
 119
 120                 if ( $key == '' || $key == 'default' ) {
 121                         // Don't return the default immediately;
 122                         // in a misconfiguration we need to fall back.
 123                         $key = $wgDefaultSkin;
 124                 }
 125
 126                 if ( isset( $skinNames[$key] ) ) {
 127                         return $key;
 128                 }
 129
 130                 // Older versions of the software used a numeric setting
 131                 // in the user preferences.
 132                 $fallback = array(
 133                         0 => $wgDefaultSkin,
 134                         1 => 'nostalgia',
 135                         2 => 'cologneblue'
 136                 );
 137
 138                 if ( isset( $fallback[$key] ) ) {
 139                         $key = $fallback[$key];
 140                 }
 141
 142                 if ( isset( $skinNames[$key] ) ) {
 143                         return $key;
 144                 } elseif ( isset( $skinNames[$wgDefaultSkin] ) ) {
 145                         return $wgDefaultSkin;
 146                 } else {
 147                         return 'vector';
 148                 }
 149         }
 150
 151         /**
 152          * Factory method for loading a skin of a given type
 153          * @param string $key 'monobook', 'standard', etc.
 154          * @return Skin
 155          */
 156         static function &newFromKey( $key ) {
 157                 global $wgStyleDirectory;
 158
 159                 $key = Skin::normalizeKey( $key );
 160
 161                 $skinNames = Skin::getSkinNames();
 162                 $skinName = $skinNames[$key];
 163                 $className = "Skin{$skinName}";
 164
 165                 # Grab the skin class and initialise it.
 166                 if ( !MWInit::classExists( $className ) ) {
 167
 168                         if ( !defined( 'MW_COMPILED' ) ) {
 169                                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 170                         }
 171
 172                         # Check if we got if not fallback to default skin
 173                         if ( !MWInit::classExists( $className ) ) {
 174                                 # DO NOT die if the class isn't found. This breaks maintenance
 175                                 # scripts and can cause a user account to be unrecoverable
 176                                 # except by SQL manipulation if a previously valid skin name
 177                                 # is no longer valid.
 178                                 wfDebug( "Skin class does not exist: $className\n" );
 179                                 $className = 'SkinVector';
 180                                 if ( !defined( 'MW_COMPILED' ) ) {
 181                                         require_once( "{$wgStyleDirectory}/Vector.php" );
 182                                 }
 183                         }
 184                 }
 185                 $skin = new $className( $key );
 186                 return $skin;
 187         }
 188
 189         /** @return string skin name */
 190         public function getSkinName() {
 191                 return $this->skinname;
 192         }
 193
 194         /**
 195          * @param $out OutputPage
 196          */
 197         function initPage( OutputPage $out ) {
 198                 wfProfileIn( __METHOD__ );
 199
 200                 $this->preloadExistence();
 201
 202                 wfProfileOut( __METHOD__ );
 203         }
 204
 205         /**
 206          * Preload the existence of three commonly-requested pages in a single query
 207          */
 208         function preloadExistence() {
 209                 $user = $this->getUser();
 210
 211                 // User/talk link
 212                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 213
 214                 // Other tab link
 215                 if ( $this->getTitle()->isSpecialPage() ) {
 216                         // nothing
 217                 } elseif ( $this->getTitle()->isTalkPage() ) {
 218                         $titles[] = $this->getTitle()->getSubjectPage();
 219                 } else {
 220                         $titles[] = $this->getTitle()->getTalkPage();
 221                 }
 222
 223                 $lb = new LinkBatch( $titles );
 224                 $lb->setCaller( __METHOD__ );
 225                 $lb->execute();
 226         }
 227
 228         /**
 229          * Get the current revision ID
 230          *
 231          * @return Integer
 232          */
 233         public function getRevisionId() {
 234                 return $this->getOutput()->getRevisionId();
 235         }
 236
 237         /**
 238          * Whether the revision displayed is the latest revision of the page
 239          *
 240          * @return Boolean
 241          */
 242         public function isRevisionCurrent() {
 243                 $revID = $this->getRevisionId();
 244                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 245         }
 246
 247         /**
 248          * Set the "relevant" title
 249          * @see self::getRelevantTitle()
 250          * @param $t Title object to use
 251          */
 252         public function setRelevantTitle( $t ) {
 253                 $this->mRelevantTitle = $t;
 254         }
 255
 256         /**
 257          * Return the "relevant" title.
 258          * A "relevant" title is not necessarily the actual title of the page.
 259          * Special pages like Special:MovePage use set the page they are acting on
 260          * as their "relevant" title, this allows the skin system to display things
 261          * such as content tabs which belong to to that page instead of displaying
 262          * a basic special page tab which has almost no meaning.
 263          *
 264          * @return Title
 265          */
 266         public function getRelevantTitle() {
 267                 if ( isset( $this->mRelevantTitle ) ) {
 268                         return $this->mRelevantTitle;
 269                 }
 270                 return $this->getTitle();
 271         }
 272
 273         /**
 274          * Set the "relevant" user
 275          * @see self::getRelevantUser()
 276          * @param $u User object to use
 277          */
 278         public function setRelevantUser( $u ) {
 279                 $this->mRelevantUser = $u;
 280         }
 281
 282         /**
 283          * Return the "relevant" user.
 284          * A "relevant" user is similar to a relevant title. Special pages like
 285          * Special:Contributions mark the user which they are relevant to so that
 286          * things like the toolbox can display the information they usually are only
 287          * able to display on a user's userpage and talkpage.
 288          * @return User
 289          */
 290         public function getRelevantUser() {
 291                 if ( isset( $this->mRelevantUser ) ) {
 292                         return $this->mRelevantUser;
 293                 }
 294                 $title = $this->getRelevantTitle();
 295                 if( $title->hasSubjectNamespace( NS_USER ) ) {
 296                         $rootUser = $title->getRootText();
 297                         if ( User::isIP( $rootUser ) ) {
 298                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 299                         } else {
 300                                 $user = User::newFromName( $rootUser, false );
 301                                 if ( $user && $user->isLoggedIn() ) {
 302                                         $this->mRelevantUser = $user;
 303                                 }
 304                         }
 305                         return $this->mRelevantUser;
 306                 }
 307                 return null;
 308         }
 309
 310         /**
 311          * Outputs the HTML generated by other functions.
 312          * @param $out OutputPage
 313          */
 314         abstract function outputPage( OutputPage $out = null );
 315
 316         /**
 317          * @param $data array
 318          * @return string
 319          */
 320         static function makeVariablesScript( $data ) {
 321                 if ( $data ) {
 322                         return Html::inlineScript(
 323                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 324                         );
 325                 } else {
 326                         return '';
 327                 }
 328         }
 329
 330         /**
 331          * Make a "<script>" tag containing global variables
 332          *
 333          * @deprecated in 1.19
 334          * @param $unused
 335          * @return string HTML fragment
 336          */
 337         public static function makeGlobalVariablesScript( $unused ) {
 338                 global $wgOut;
 339
 340                 wfDeprecated( __METHOD__, '1.19' );
 341
 342                 return self::makeVariablesScript( $wgOut->getJSVars() );
 343         }
 344
 345         /**
 346          * Get the query to generate a dynamic stylesheet
 347          *
 348          * @return array
 349          */
 350         public static function getDynamicStylesheetQuery() {
 351                 global $wgSquidMaxage;
 352
 353                 return array(
 354                                 'action' => 'raw',
 355                                 'maxage' => $wgSquidMaxage,
 356                                 'usemsgcache' => 'yes',
 357                                 'ctype' => 'text/css',
 358                                 'smaxage' => $wgSquidMaxage,
 359                         );
 360         }
 361
 362         /**
 363          * Add skin specific stylesheets
 364          * Calling this method with an $out of anything but the same OutputPage
 365          * inside ->getOutput() is deprecated. The $out arg is kept
 366          * for compatibility purposes with skins.
 367          * @param $out OutputPage
 368          * @todo delete
 369          */
 370         abstract function setupSkinUserCss( OutputPage $out );
 371
 372         /**
 373          * TODO: document
 374          * @param $title Title
 375          * @return String
 376          */
 377         function getPageClasses( $title ) {
 378                 $numeric = 'ns-' . $title->getNamespace();
 379
 380                 if ( $title->isSpecialPage() ) {
 381                         $type = 'ns-special';
 382                         // bug 23315: provide a class based on the canonical special page name without subpages
 383                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 384                         if ( $canonicalName ) {
 385                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 386                         } else {
 387                                 $type .= ' mw-invalidspecialpage';
 388                         }
 389                 } elseif ( $title->isTalkPage() ) {
 390                         $type = 'ns-talk';
 391                 } else {
 392                         $type = 'ns-subject';
 393                 }
 394
 395                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 396
 397                 return "$numeric $type $name";
 398         }
 399
 400         /**
 401          * This will be called by OutputPage::headElement when it is creating the
 402          * "<body>" tag, skins can override it if they have a need to add in any
 403          * body attributes or classes of their own.
 404          * @param $out OutputPage
 405          * @param $bodyAttrs Array
 406          */
 407         function addToBodyAttributes( $out, &$bodyAttrs ) {
 408                 // does nothing by default
 409         }
 410
 411         /**
 412          * URL to the logo
 413          * @return String
 414          */
 415         function getLogo() {
 416                 global $wgLogo;
 417                 return $wgLogo;
 418         }
 419
 420         /**
 421          * @return string
 422          */
 423         function getCategoryLinks() {
 424                 global $wgUseCategoryBrowser;
 425
 426                 $out = $this->getOutput();
 427                 $allCats = $out->getCategoryLinks();
 428
 429                 if ( !count( $allCats ) ) {
 430                         return '';
 431                 }
 432
 433                 $embed = "<li>";
 434                 $pop = "</li>";
 435
 436                 $s = '';
 437                 $colon = $this->msg( 'colon-separator' )->escaped();
 438
 439                 if ( !empty( $allCats['normal'] ) ) {
 440                         $t = $embed . implode( "{$pop}{$embed}", $allCats['normal'] ) . $pop;
 441
 442                         $msg = $this->msg( 'pagecategories' )->numParams( count( $allCats['normal'] ) )->escaped();
 443                         $linkPage = wfMessage( 'pagecategorieslink' )->inContentLanguage()->text();
 444                         $s .= '<div id="mw-normal-catlinks" class="mw-normal-catlinks">' .
 445                                 Linker::link( Title::newFromText( $linkPage ), $msg )
 446                                 . $colon . '<ul>' . $t . '</ul>' . '</div>';
 447                 }
 448
 449                 # Hidden categories
 450                 if ( isset( $allCats['hidden'] ) ) {
 451                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 452                                 $class = ' mw-hidden-cats-user-shown';
 453                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 454                                 $class = ' mw-hidden-cats-ns-shown';
 455                         } else {
 456                                 $class = ' mw-hidden-cats-hidden';
 457                         }
 458
 459                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"mw-hidden-catlinks$class\">" .
 460                                 $this->msg( 'hidden-categories' )->numParams( count( $allCats['hidden'] ) )->escaped() .
 461                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}", $allCats['hidden'] ) . $pop . '</ul>' .
 462                                 '</div>';
 463                 }
 464
 465                 # optional 'dmoz-like' category browser. Will be shown under the list
 466                 # of categories an article belong to
 467                 if ( $wgUseCategoryBrowser ) {
 468                         $s .= '<br /><hr />';
 469
 470                         # get a big array of the parents tree
 471                         $parenttree = $this->getTitle()->getParentCategoryTree();
 472                         # Skin object passed by reference cause it can not be
 473                         # accessed under the method subfunction drawCategoryBrowser
 474                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 475                         # Clean out bogus first entry and sort them
 476                         unset( $tempout[0] );
 477                         asort( $tempout );
 478                         # Output one per line
 479                         $s .= implode( "<br />\n", $tempout );
 480                 }
 481
 482                 return $s;
 483         }
 484
 485         /**
 486          * Render the array as a series of links.
 487          * @param array $tree categories tree returned by Title::getParentCategoryTree
 488          * @return String separated by &gt;, terminate with "\n"
 489          */
 490         function drawCategoryBrowser( $tree ) {
 491                 $return = '';
 492
 493                 foreach ( $tree as $element => $parent ) {
 494                         if ( empty( $parent ) ) {
 495                                 # element start a new list
 496                                 $return .= "\n";
 497                         } else {
 498                                 # grab the others elements
 499                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 500                         }
 501
 502                         # add our current element to the list
 503                         $eltitle = Title::newFromText( $element );
 504                         $return .= Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 505                 }
 506
 507                 return $return;
 508         }
 509
 510         /**
 511          * @return string
 512          */
 513         function getCategories() {
 514                 $out = $this->getOutput();
 515
 516                 $catlinks = $this->getCategoryLinks();
 517
 518                 $classes = 'catlinks';
 519
 520                 // Check what we're showing
 521                 $allCats = $out->getCategoryLinks();
 522                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 523                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 524
 525                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 526                         $classes .= ' catlinks-allhidden';
 527                 }
 528
 529                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 530         }
 531
 532         /**
 533          * This runs a hook to allow extensions placing their stuff after content
 534          * and article metadata (e.g. categories).
 535          * Note: This function has nothing to do with afterContent().
 536          *
 537          * This hook is placed here in order to allow using the same hook for all
 538          * skins, both the SkinTemplate based ones and the older ones, which directly
 539          * use this class to get their data.
 540          *
 541          * The output of this function gets processed in SkinTemplate::outputPage() for
 542          * the SkinTemplate based skins, all other skins should directly echo it.
 543          *
 544          * @return String, empty by default, if not changed by any hook function.
 545          */
 546         protected function afterContentHook() {
 547                 $data = '';
 548
 549                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 550                         // adding just some spaces shouldn't toggle the output
 551                         // of the whole <div/>, so we use trim() here
 552                         if ( trim( $data ) != '' ) {
 553                                 // Doing this here instead of in the skins to
 554                                 // ensure that the div has the same ID in all
 555                                 // skins
 556                                 $data = "<div id='mw-data-after-content'>\n" .
 557                                         "\t$data\n" .
 558                                         "</div>\n";
 559                         }
 560                 } else {
 561                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 562                 }
 563
 564                 return $data;
 565         }
 566
 567         /**
 568          * Generate debug data HTML for displaying at the bottom of the main content
 569          * area.
 570          * @return String HTML containing debug data, if enabled (otherwise empty).
 571          */
 572         protected function generateDebugHTML() {
 573                 return MWDebug::getHTMLDebugLog();
 574         }
 575
 576         /**
 577          * This gets called shortly before the "</body>" tag.
 578          *
 579          * @return String HTML-wrapped JS code to be put before "</body>"
 580          */
 581         function bottomScripts() {
 582                 // TODO and the suckage continues. This function is really just a wrapper around
 583                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 584                 // up at some point
 585                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 586                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 587
 588                 return $bottomScriptText;
 589         }
 590
 591         /**
 592          * Text with the permalink to the source page,
 593          * usually shown on the footer of a printed page
 594          *
 595          * @return string HTML text with an URL
 596          */
 597         function printSource() {
 598                 $oldid = $this->getRevisionId();
 599                 if ( $oldid ) {
 600                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL( 'oldid=' . $oldid ) ) );
 601                 } else {
 602                         // oldid not available for non existing pages
 603                         $url = htmlspecialchars( wfExpandIRI( $this->getTitle()->getCanonicalURL() ) );
 604                 }
 605                 return $this->msg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' )->text();
 606         }
 607
 608         /**
 609          * @return String
 610          */
 611         function getUndeleteLink() {
 612                 $action = $this->getRequest()->getVal( 'action', 'view' );
 613
 614                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) &&
 615                         ( $this->getTitle()->getArticleID() == 0 || $action == 'history' ) ) {
 616                         $n = $this->getTitle()->isDeleted();
 617
 618                         if ( $n ) {
 619                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 620                                         $msg = 'thisisdeleted';
 621                                 } else {
 622                                         $msg = 'viewdeleted';
 623                                 }
 624
 625                                 return $this->msg( $msg )->rawParams(
 626                                         Linker::linkKnown(
 627                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 628                                                 $this->msg( 'restorelink' )->numParams( $n )->escaped() )
 629                                         )->text();
 630                         }
 631                 }
 632
 633                 return '';
 634         }
 635
 636         /**
 637          * @return string
 638          */
 639         function subPageSubtitle() {
 640                 global $wgLang;
 641                 $out = $this->getOutput();
 642                 $subpages = '';
 643
 644                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 645                         return $subpages;
 646                 }
 647
 648                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 649                         $ptext = $this->getTitle()->getPrefixedText();
 650                         if ( preg_match( '/\//', $ptext ) ) {
 651                                 $links = explode( '/', $ptext );
 652                                 array_pop( $links );
 653                                 $c = 0;
 654                                 $growinglink = '';
 655                                 $display = '';
 656
 657                                 foreach ( $links as $link ) {
 658                                         $growinglink .= $link;
 659                                         $display .= $link;
 660                                         $linkObj = Title::newFromText( $growinglink );
 661
 662                                         if ( is_object( $linkObj ) && $linkObj->isKnown() ) {
 663                                                 $getlink = Linker::linkKnown(
 664                                                         $linkObj,
 665                                                         htmlspecialchars( $display )
 666                                                 );
 667
 668                                                 $c++;
 669
 670                                                 if ( $c > 1 ) {
 671                                                         $subpages .= $wgLang->getDirMarkEntity() . $this->msg( 'pipe-separator' )->escaped();
 672                                                 } else  {
 673                                                         $subpages .= '&lt; ';
 674                                                 }
 675
 676                                                 $subpages .= $getlink;
 677                                                 $display = '';
 678                                         } else {
 679                                                 $display .= '/';
 680                                         }
 681                                         $growinglink .= '/';
 682                                 }
 683                         }
 684                 }
 685
 686                 return $subpages;
 687         }
 688
 689         /**
 690          * Returns true if the IP should be shown in the header
 691          * @return Bool
 692          */
 693         function showIPinHeader() {
 694                 global $wgShowIPinHeader;
 695                 return $wgShowIPinHeader && session_id() != '';
 696         }
 697
 698         /**
 699          * @return String
 700          */
 701         function getSearchLink() {
 702                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 703                 return $searchPage->getLocalURL();
 704         }
 705
 706         /**
 707          * @return string
 708          */
 709         function escapeSearchLink() {
 710                 return htmlspecialchars( $this->getSearchLink() );
 711         }
 712
 713         /**
 714          * @param $type string
 715          * @return string
 716          */
 717         function getCopyright( $type = 'detect' ) {
 718                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgContLang;
 719
 720                 if ( $type == 'detect' ) {
 721                         if ( !$this->isRevisionCurrent() && !$this->msg( 'history_copyright' )->inContentLanguage()->isDisabled() ) {
 722                                 $type = 'history';
 723                         } else {
 724                                 $type = 'normal';
 725                         }
 726                 }
 727
 728                 if ( $type == 'history' ) {
 729                         $msg = 'history_copyright';
 730                 } else {
 731                         $msg = 'copyright';
 732                 }
 733
 734                 if ( $wgRightsPage ) {
 735                         $title = Title::newFromText( $wgRightsPage );
 736                         $link = Linker::linkKnown( $title, $wgRightsText );
 737                 } elseif ( $wgRightsUrl ) {
 738                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 739                 } elseif ( $wgRightsText ) {
 740                         $link = $wgRightsText;
 741                 } else {
 742                         # Give up now
 743                         return '';
 744                 }
 745
 746                 // Allow for site and per-namespace customization of copyright notice.
 747                 $forContent = true;
 748
 749                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 750
 751                 $msgObj = $this->msg( $msg )->rawParams( $link );
 752                 if ( $forContent ) {
 753                         $msg = $msgObj->inContentLanguage()->text();
 754                         if ( $this->getLanguage()->getCode() !== $wgContLang->getCode() ) {
 755                                 $msg = Html::rawElement( 'span', array( 'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $msg );
 756                         }
 757                         return $msg;
 758                 } else {
 759                         return $msgObj->text();
 760                 }
 761         }
 762
 763         /**
 764          * @return null|string
 765          */
 766         function getCopyrightIcon() {
 767                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 768
 769                 $out = '';
 770
 771                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 772                         $out = $wgCopyrightIcon;
 773                 } elseif ( $wgRightsIcon ) {
 774                         $icon = htmlspecialchars( $wgRightsIcon );
 775
 776                         if ( $wgRightsUrl ) {
 777                                 $url = htmlspecialchars( $wgRightsUrl );
 778                                 $out .= '<a href="' . $url . '">';
 779                         }
 780
 781                         $text = htmlspecialchars( $wgRightsText );
 782                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 783
 784                         if ( $wgRightsUrl ) {
 785                                 $out .= '</a>';
 786                         }
 787                 }
 788
 789                 return $out;
 790         }
 791
 792         /**
 793          * Gets the powered by MediaWiki icon.
 794          * @return string
 795          */
 796         function getPoweredBy() {
 797                 global $wgStylePath;
 798
 799                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 800                 $text = '<a href="//www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 801                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 802                 return $text;
 803         }
 804
 805         /**
 806          * Get the timestamp of the latest revision, formatted in user language
 807          *
 808          * @return String
 809          */
 810         protected function lastModified() {
 811                 $timestamp = $this->getOutput()->getRevisionTimestamp();
 812
 813                 # No cached timestamp, load it from the database
 814                 if ( $timestamp === null ) {
 815                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 816                 }
 817
 818                 if ( $timestamp ) {
 819                         $d = $this->getLanguage()->userDate( $timestamp, $this->getUser() );
 820                         $t = $this->getLanguage()->userTime( $timestamp, $this->getUser() );
 821                         $s = ' ' . $this->msg( 'lastmodifiedat', $d, $t )->text();
 822                 } else {
 823                         $s = '';
 824                 }
 825
 826                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 827                         $s .= ' <strong>' . $this->msg( 'laggedslavemode' )->text() . '</strong>';
 828                 }
 829
 830                 return $s;
 831         }
 832
 833         /**
 834          * @param $align string
 835          * @return string
 836          */
 837         function logoText( $align = '' ) {
 838                 if ( $align != '' ) {
 839                         $a = " style='float: {$align};'";
 840                 } else {
 841                         $a = '';
 842                 }
 843
 844                 $mp = $this->msg( 'mainpage' )->escaped();
 845                 $mptitle = Title::newMainPage();
 846                 $url = ( is_object( $mptitle ) ? htmlspecialchars( $mptitle->getLocalURL() ) : '' );
 847
 848                 $logourl = $this->getLogo();
 849                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 850
 851                 return $s;
 852         }
 853
 854         /**
 855          * Renders a $wgFooterIcons icon according to the method's arguments
 856          * @param array $icon The icon to build the html for, see $wgFooterIcons for the format of this array
 857          * @param bool|String $withImage Whether to use the icon's image or output a text-only footericon
 858          * @return String HTML
 859          */
 860         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 861                 if ( is_string( $icon ) ) {
 862                         $html = $icon;
 863                 } else { // Assuming array
 864                         $url = isset( $icon["url"] ) ? $icon["url"] : null;
 865                         unset( $icon["url"] );
 866                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 867                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
 868                         } else {
 869                                 $html = htmlspecialchars( $icon["alt"] );
 870                         }
 871                         if ( $url ) {
 872                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
 873                         }
 874                 }
 875                 return $html;
 876         }
 877
 878         /**
 879          * Gets the link to the wiki's main page.
 880          * @return string
 881          */
 882         function mainPageLink() {
 883                 $s = Linker::linkKnown(
 884                         Title::newMainPage(),
 885                         $this->msg( 'mainpage' )->escaped()
 886                 );
 887
 888                 return $s;
 889         }
 890
 891         /**
 892          * @param $desc
 893          * @param $page
 894          * @return string
 895          */
 896         public function footerLink( $desc, $page ) {
 897                 // if the link description has been set to "-" in the default language,
 898                 if ( $this->msg( $desc )->inContentLanguage()->isDisabled() ) {
 899                         // then it is disabled, for all languages.
 900                         return '';
 901                 } else {
 902                         // Otherwise, we display the link for the user, described in their
 903                         // language (which may or may not be the same as the default language),
 904                         // but we make the link target be the one site-wide page.
 905                         $title = Title::newFromText( $this->msg( $page )->inContentLanguage()->text() );
 906
 907                         return Linker::linkKnown(
 908                                 $title,
 909                                 $this->msg( $desc )->escaped()
 910                         );
 911                 }
 912         }
 913
 914         /**
 915          * Gets the link to the wiki's privacy policy page.
 916          * @return String HTML
 917          */
 918         function privacyLink() {
 919                 return $this->footerLink( 'privacy', 'privacypage' );
 920         }
 921
 922         /**
 923          * Gets the link to the wiki's about page.
 924          * @return String HTML
 925          */
 926         function aboutLink() {
 927                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 928         }
 929
 930         /**
 931          * Gets the link to the wiki's general disclaimers page.
 932          * @return String HTML
 933          */
 934         function disclaimerLink() {
 935                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
 936         }
 937
 938         /**
 939          * Return URL options for the 'edit page' link.
 940          * This may include an 'oldid' specifier, if the current page view is such.
 941          *
 942          * @return array
 943          * @private
 944          */
 945         function editUrlOptions() {
 946                 $options = array( 'action' => 'edit' );
 947
 948                 if ( !$this->isRevisionCurrent() ) {
 949                         $options['oldid'] = intval( $this->getRevisionId() );
 950                 }
 951
 952                 return $options;
 953         }
 954
 955         /**
 956          * @param $id User|int
 957          * @return bool
 958          */
 959         function showEmailUser( $id ) {
 960                 if ( $id instanceof User ) {
 961                         $targetUser = $id;
 962                 } else {
 963                         $targetUser = User::newFromId( $id );
 964                 }
 965                 return $this->getUser()->canSendEmail() && # the sending user must have a confirmed email address
 966                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
 967         }
 968
 969         /**
 970          * Return a fully resolved style path url to images or styles stored in the common folder.
 971          * This method returns a url resolved using the configured skin style path
 972          * and includes the style version inside of the url.
 973          * @param string $name The name or path of a skin resource file
 974          * @return String The fully resolved style path url including styleversion
 975          */
 976         function getCommonStylePath( $name ) {
 977                 global $wgStylePath, $wgStyleVersion;
 978                 return "$wgStylePath/common/$name?$wgStyleVersion";
 979         }
 980
 981         /**
 982          * Return a fully resolved style path url to images or styles stored in the current skins's folder.
 983          * This method returns a url resolved using the configured skin style path
 984          * and includes the style version inside of the url.
 985          * @param string $name The name or path of a skin resource file
 986          * @return String The fully resolved style path url including styleversion
 987          */
 988         function getSkinStylePath( $name ) {
 989                 global $wgStylePath, $wgStyleVersion;
 990                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
 991         }
 992
 993         /* these are used extensively in SkinTemplate, but also some other places */
 994
 995         /**
 996          * @param $urlaction string
 997          * @return String
 998          */
 999         static function makeMainPageUrl( $urlaction = '' ) {
1000                 $title = Title::newMainPage();
1001                 self::checkTitle( $title, '' );
1002
1003                 return $title->getLocalURL( $urlaction );
1004         }
1005
1006         /**
1007          * Make a URL for a Special Page using the given query and protocol.
1008          *
1009          * If $proto is set to null, make a local URL. Otherwise, make a full
1010          * URL with the protocol specified.
1011          *
1012          * @param string $name Name of the Special page
1013          * @param string $urlaction Query to append
1014          * @param $proto Protocol to use or null for a local URL
1015          * @return String
1016          */
1017         static function makeSpecialUrl( $name, $urlaction = '', $proto = null ) {
1018                 $title = SpecialPage::getSafeTitleFor( $name );
1019                 if( is_null( $proto ) ) {
1020                         return $title->getLocalURL( $urlaction );
1021                 } else {
1022                         return $title->getFullURL( $urlaction, false, $proto );
1023                 }
1024         }
1025
1026         /**
1027          * @param $name string
1028          * @param $subpage string
1029          * @param $urlaction string
1030          * @return String
1031          */
1032         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1033                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1034                 return $title->getLocalURL( $urlaction );
1035         }
1036
1037         /**
1038          * @param $name string
1039          * @param $urlaction string
1040          * @return String
1041          */
1042         static function makeI18nUrl( $name, $urlaction = '' ) {
1043                 $title = Title::newFromText( wfMessage( $name )->inContentLanguage()->text() );
1044                 self::checkTitle( $title, $name );
1045                 return $title->getLocalURL( $urlaction );
1046         }
1047
1048         /**
1049          * @param $name string
1050          * @param $urlaction string
1051          * @return String
1052          */
1053         static function makeUrl( $name, $urlaction = '' ) {
1054                 $title = Title::newFromText( $name );
1055                 self::checkTitle( $title, $name );
1056
1057                 return $title->getLocalURL( $urlaction );
1058         }
1059
1060         /**
1061          * If url string starts with http, consider as external URL, else
1062          * internal
1063          * @param $name String
1064          * @return String URL
1065          */
1066         static function makeInternalOrExternalUrl( $name ) {
1067                 if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $name ) ) {
1068                         return $name;
1069                 } else {
1070                         return self::makeUrl( $name );
1071                 }
1072         }
1073
1074         /**
1075          * this can be passed the NS number as defined in Language.php
1076          * @param $name
1077          * @param $urlaction string
1078          * @param $namespace int
1079          * @return String
1080          */
1081         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1082                 $title = Title::makeTitleSafe( $namespace, $name );
1083                 self::checkTitle( $title, $name );
1084
1085                 return $title->getLocalURL( $urlaction );
1086         }
1087
1088         /**
1089          * these return an array with the 'href' and boolean 'exists'
1090          * @param $name
1091          * @param $urlaction string
1092          * @return array
1093          */
1094         static function makeUrlDetails( $name, $urlaction = '' ) {
1095                 $title = Title::newFromText( $name );
1096                 self::checkTitle( $title, $name );
1097
1098                 return array(
1099                         'href' => $title->getLocalURL( $urlaction ),
1100                         'exists' => $title->getArticleID() != 0,
1101                 );
1102         }
1103
1104         /**
1105          * Make URL details where the article exists (or at least it's convenient to think so)
1106          * @param string $name Article name
1107          * @param $urlaction String
1108          * @return Array
1109          */
1110         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1111                 $title = Title::newFromText( $name );
1112                 self::checkTitle( $title, $name );
1113
1114                 return array(
1115                         'href' => $title->getLocalURL( $urlaction ),
1116                         'exists' => true
1117                 );
1118         }
1119
1120         /**
1121          * make sure we have some title to operate on
1122          *
1123          * @param $title Title
1124          * @param $name string
1125          */
1126         static function checkTitle( &$title, $name ) {
1127                 if ( !is_object( $title ) ) {
1128                         $title = Title::newFromText( $name );
1129                         if ( !is_object( $title ) ) {
1130                                 $title = Title::newFromText( '--error: link target missing--' );
1131                         }
1132                 }
1133         }
1134
1135         /**
1136          * Build an array that represents the sidebar(s), the navigation bar among them.
1137          *
1138          * BaseTemplate::getSidebar can be used to simplify the format and id generation in new skins.
1139          *
1140          * The format of the returned array is array( heading => content, ... ), where:
1141          * - heading is the heading of a navigation portlet. It is either:
1142          *   - magic string to be handled by the skins ('SEARCH' / 'LANGUAGES' / 'TOOLBOX' / ...)
1143          *   - a message name (e.g. 'navigation'), the message should be HTML-escaped by the skin
1144          *   - plain text, which should be HTML-escaped by the skin
1145          * - content is the contents of the portlet. It is either:
1146          *   - HTML text (<ul><li>...</li>...</ul>)
1147          *   - array of link data in a format accepted by BaseTemplate::makeListItem()
1148          *   - (for a magic string as a key, any value)
1149          *
1150          * Note that extensions can control the sidebar contents using the SkinBuildSidebar hook
1151          * and can technically insert anything in here; skin creators are expected to handle
1152          * values described above.
1153          *
1154          * @return array
1155          */
1156         function buildSidebar() {
1157                 global $wgMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1158                 wfProfileIn( __METHOD__ );
1159
1160                 $key = wfMemcKey( 'sidebar', $this->getLanguage()->getCode() );
1161
1162                 if ( $wgEnableSidebarCache ) {
1163                         $cachedsidebar = $wgMemc->get( $key );
1164                         if ( $cachedsidebar ) {
1165                                 wfProfileOut( __METHOD__ );
1166                                 return $cachedsidebar;
1167                         }
1168                 }
1169
1170                 $bar = array();
1171                 $this->addToSidebar( $bar, 'sidebar' );
1172
1173                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1174                 if ( $wgEnableSidebarCache ) {
1175                         $wgMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1176                 }
1177
1178                 wfProfileOut( __METHOD__ );
1179                 return $bar;
1180         }
1181         /**
1182          * Add content from a sidebar system message
1183          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1184          *
1185          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1186          *
1187          * @param $bar array
1188          * @param $message String
1189          */
1190         function addToSidebar( &$bar, $message ) {
1191                 $this->addToSidebarPlain( $bar, wfMessage( $message )->inContentLanguage()->plain() );
1192         }
1193
1194         /**
1195          * Add content from plain text
1196          * @since 1.17
1197          * @param $bar array
1198          * @param $text string
1199          * @return Array
1200          */
1201         function addToSidebarPlain( &$bar, $text ) {
1202                 $lines = explode( "\n", $text );
1203
1204                 $heading = '';
1205
1206                 foreach ( $lines as $line ) {
1207                         if ( strpos( $line, '*' ) !== 0 ) {
1208                                 continue;
1209                         }
1210                         $line = rtrim( $line, "\r" ); // for Windows compat
1211
1212                         if ( strpos( $line, '**' ) !== 0 ) {
1213                                 $heading = trim( $line, '* ' );
1214                                 if ( !array_key_exists( $heading, $bar ) ) {
1215                                         $bar[$heading] = array();
1216                                 }
1217                         } else {
1218                                 $line = trim( $line, '* ' );
1219
1220                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1221                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1222                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1223                                         if ( count( $line ) !== 2 ) {
1224                                                 // Second sanity check, could be hit by people doing
1225                                                 // funky stuff with parserfuncs... (bug 33321)
1226                                                 continue;
1227                                         }
1228
1229                                         $extraAttribs = array();
1230
1231                                         $msgLink = $this->msg( $line[0] )->inContentLanguage();
1232                                         if ( $msgLink->exists() ) {
1233                                                 $link = $msgLink->text();
1234                                                 if ( $link == '-' ) {
1235                                                         continue;
1236                                                 }
1237                                         } else {
1238                                                 $link = $line[0];
1239                                         }
1240                                         $msgText = $this->msg( $line[1] );
1241                                         if ( $msgText->exists() ) {
1242                                                 $text = $msgText->text();
1243                                         } else {
1244                                                 $text = $line[1];
1245                                         }
1246
1247                                         if ( preg_match( '/^(?i:' . wfUrlProtocols() . ')/', $link ) ) {
1248                                                 $href = $link;
1249
1250                                                 // Parser::getExternalLinkAttribs won't work here because of the Namespace things
1251                                                 global $wgNoFollowLinks, $wgNoFollowDomainExceptions;
1252                                                 if ( $wgNoFollowLinks && !wfMatchesDomainList( $href, $wgNoFollowDomainExceptions ) ) {
1253                                                         $extraAttribs['rel'] = 'nofollow';
1254                                                 }
1255
1256                                                 global $wgExternalLinkTarget;
1257                                                 if ( $wgExternalLinkTarget ) {
1258                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1259                                                 }
1260                                         } else {
1261                                                 $title = Title::newFromText( $link );
1262
1263                                                 if ( $title ) {
1264                                                         $title = $title->fixSpecialName();
1265                                                         $href = $title->getLinkURL();
1266                                                 } else {
1267                                                         $href = 'INVALID-TITLE';
1268                                                 }
1269                                         }
1270
1271                                         $bar[$heading][] = array_merge( array(
1272                                                 'text' => $text,
1273                                                 'href' => $href,
1274                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1275                                                 'active' => false
1276                                         ), $extraAttribs );
1277                                 } else {
1278                                         continue;
1279                                 }
1280                         }
1281                 }
1282
1283                 return $bar;
1284         }
1285
1286         /**
1287          * Should we load mediawiki.legacy.wikiprintable?  Skins that have their own
1288          * print stylesheet should override this and return false.  (This is an
1289          * ugly hack to get Monobook to play nicely with OutputPage::headElement().)
1290          *
1291          * @return bool
1292          */
1293         public function commonPrintStylesheet() {
1294                 return true;
1295         }
1296
1297         /**
1298          * Gets new talk page messages for the current user.
1299          * @return MediaWiki message or if no new talk page messages, nothing
1300          */
1301         function getNewtalks() {
1302                 $out = $this->getOutput();
1303
1304                 $newtalks = $this->getUser()->getNewMessageLinks();
1305                 $ntl = '';
1306
1307                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1308                         $uTalkTitle = $this->getUser()->getTalkPage();
1309
1310                         if ( !$uTalkTitle->equals( $out->getTitle() ) ) {
1311                                 $lastSeenRev = isset( $newtalks[0]['rev'] ) ? $newtalks[0]['rev'] : null;
1312                                 $nofAuthors = 0;
1313                                 if ( $lastSeenRev !== null ) {
1314                                         $plural = true; // Default if we have a last seen revision: if unknown, use plural
1315                                         $latestRev = Revision::newFromTitle( $uTalkTitle, false, Revision::READ_NORMAL );
1316                                         if ( $latestRev !== null ) {
1317                                                 // Singular if only 1 unseen revision, plural if several unseen revisions.
1318                                                 $plural = $latestRev->getParentId() !== $lastSeenRev->getId();
1319                                                 $nofAuthors = $uTalkTitle->countAuthorsBetween(
1320                                                         $lastSeenRev, $latestRev, 10, 'include_new' );
1321                                         }
1322                                 } else {
1323                                         // Singular if no revision -> diff link will show latest change only in any case
1324                                         $plural = false;
1325                                 }
1326                                 $plural = $plural ? 2 : 1;
1327                                 // 2 signifies "more than one revision". We don't know how many, and even if we did,
1328                                 // the number of revisions or authors is not necessarily the same as the number of
1329                                 // "messages".
1330                                 $newMessagesLink = Linker::linkKnown(
1331                                         $uTalkTitle,
1332                                         $this->msg( 'newmessageslinkplural' )->params( $plural )->escaped(),
1333                                         array(),
1334                                         array( 'redirect' => 'no' )
1335                                 );
1336
1337                                 $newMessagesDiffLink = Linker::linkKnown(
1338                                         $uTalkTitle,
1339                                         $this->msg( 'newmessagesdifflinkplural' )->params( $plural )->escaped(),
1340                                         array(),
1341                                         $lastSeenRev !== null
1342                                                 ? array( 'oldid' => $lastSeenRev->getId(), 'diff' => 'cur' )
1343                                                 : array( 'diff' => 'cur' )
1344                                 );
1345
1346                                 if ( $nofAuthors >= 1 && $nofAuthors <= 10 ) {
1347                                         $ntl = $this->msg(
1348                                                 'youhavenewmessagesfromusers',
1349                                                 $newMessagesLink,
1350                                                 $newMessagesDiffLink
1351                                         )->numParams( $nofAuthors );
1352                                 } else {
1353                                         // $nofAuthors === 11 signifies "11 or more" ("more than 10")
1354                                         $ntl = $this->msg(
1355                                                 $nofAuthors > 10 ? 'youhavenewmessagesmanyusers' : 'youhavenewmessages',
1356                                                 $newMessagesLink,
1357                                                 $newMessagesDiffLink
1358                                         );
1359                                 }
1360                                 $ntl = $ntl->text();
1361                                 # Disable Squid cache
1362                                 $out->setSquidMaxage( 0 );
1363                         }
1364                 } elseif ( count( $newtalks ) ) {
1365                         // _>" " for BC <= 1.16
1366                         $sep = str_replace( '_', ' ', $this->msg( 'newtalkseparator' )->escaped() );
1367                         $msgs = array();
1368
1369                         foreach ( $newtalks as $newtalk ) {
1370                                 $msgs[] = Xml::element(
1371                                         'a',
1372                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1373                                 );
1374                         }
1375                         $parts = implode( $sep, $msgs );
1376                         $ntl = $this->msg( 'youhavenewmessagesmulti' )->rawParams( $parts )->escaped();
1377                         $out->setSquidMaxage( 0 );
1378                 }
1379
1380                 return $ntl;
1381         }
1382
1383         /**
1384          * Get a cached notice
1385          *
1386          * @param string $name message name, or 'default' for $wgSiteNotice
1387          * @return String: HTML fragment
1388          */
1389         private function getCachedNotice( $name ) {
1390                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1391
1392                 wfProfileIn( __METHOD__ );
1393
1394                 $needParse = false;
1395
1396                 if( $name === 'default' ) {
1397                         // special case
1398                         global $wgSiteNotice;
1399                         $notice = $wgSiteNotice;
1400                         if( empty( $notice ) ) {
1401                                 wfProfileOut( __METHOD__ );
1402                                 return false;
1403                         }
1404                 } else {
1405                         $msg = $this->msg( $name )->inContentLanguage();
1406                         if( $msg->isDisabled() ) {
1407                                 wfProfileOut( __METHOD__ );
1408                                 return false;
1409                         }
1410                         $notice = $msg->plain();
1411                 }
1412
1413                 // Use the extra hash appender to let eg SSL variants separately cache.
1414                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1415                 $cachedNotice = $parserMemc->get( $key );
1416                 if( is_array( $cachedNotice ) ) {
1417                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1418                                 $notice = $cachedNotice['html'];
1419                         } else {
1420                                 $needParse = true;
1421                         }
1422                 } else {
1423                         $needParse = true;
1424                 }
1425
1426                 if ( $needParse ) {
1427                         $parsed = $this->getOutput()->parse( $notice );
1428                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1429                         $notice = $parsed;
1430                 }
1431
1432                 $notice = Html::rawElement( 'div', array( 'id' => 'localNotice',
1433                         'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ), $notice );
1434                 wfProfileOut( __METHOD__ );
1435                 return $notice;
1436         }
1437
1438         /**
1439          * Get a notice based on page's namespace
1440          *
1441          * @return String: HTML fragment
1442          */
1443         function getNamespaceNotice() {
1444                 wfProfileIn( __METHOD__ );
1445
1446                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1447                 $namespaceNotice = $this->getCachedNotice( $key );
1448                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1449                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1450                 } else {
1451                         $namespaceNotice = '';
1452                 }
1453
1454                 wfProfileOut( __METHOD__ );
1455                 return $namespaceNotice;
1456         }
1457
1458         /**
1459          * Get the site notice
1460          *
1461          * @return String: HTML fragment
1462          */
1463         function getSiteNotice() {
1464                 wfProfileIn( __METHOD__ );
1465                 $siteNotice = '';
1466
1467                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1468                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1469                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1470                         } else {
1471                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1472                                 if ( !$anonNotice ) {
1473                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1474                                 } else {
1475                                         $siteNotice = $anonNotice;
1476                                 }
1477                         }
1478                         if ( !$siteNotice ) {
1479                                 $siteNotice = $this->getCachedNotice( 'default' );
1480                         }
1481                 }
1482
1483                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1484                 wfProfileOut( __METHOD__ );
1485                 return $siteNotice;
1486         }
1487
1488         /**
1489          * Create a section edit link.  This supersedes editSectionLink() and
1490          * editSectionLinkForOther().
1491          *
1492          * @param $nt      Title  The title being linked to (may not be the same as
1493          *   $wgTitle, if the section is included from a template)
1494          * @param string $section The designation of the section being pointed to,
1495          *   to be included in the link, like "&section=$section"
1496          * @param string $tooltip The tooltip to use for the link: will be escaped
1497          *   and wrapped in the 'editsectionhint' message
1498          * @param $lang    string Language code
1499          * @return         string HTML to use for edit link
1500          */
1501         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1502                 // HTML generated here should probably have userlangattributes
1503                 // added to it for LTR text on RTL pages
1504
1505                 $lang = wfGetLangObj( $lang );
1506
1507                 $attribs = array();
1508                 if ( !is_null( $tooltip ) ) {
1509                         # Bug 25462: undo double-escaping.
1510                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1511                         $attribs['title'] = wfMessage( 'editsectionhint' )->rawParams( $tooltip )
1512                                 ->inLanguage( $lang )->text();
1513                 }
1514                 $link = Linker::link( $nt, wfMessage( 'editsection' )->inLanguage( $lang )->text(),
1515                         $attribs,
1516                         array( 'action' => 'edit', 'section' => $section ),
1517                         array( 'noclasses', 'known' )
1518                 );
1519
1520                 # Run the old hook.  This takes up half of the function . . . hopefully
1521                 # we can rid of it someday.
1522                 $attribs = '';
1523                 if ( $tooltip ) {
1524                         $attribs = wfMessage( 'editsectionhint' )->rawParams( $tooltip )
1525                                 ->inLanguage( $lang )->escaped();
1526                         $attribs = " title=\"$attribs\"";
1527                 }
1528                 $result = null;
1529                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1530                 if ( !is_null( $result ) ) {
1531                         # For reverse compatibility, add the brackets *after* the hook is
1532                         # run, and even add them to hook-provided text.  (This is the main
1533                         # reason that the EditSectionLink hook is deprecated in favor of
1534                         # DoEditSectionLink: it can't change the brackets or the span.)
1535                         $result = wfMessage( 'editsection-brackets' )->rawParams( $result )
1536                                 ->inLanguage( $lang )->escaped();
1537                         return "<span class=\"editsection\">$result</span>";
1538                 }
1539
1540                 # Add the brackets and the span, and *then* run the nice new hook, with
1541                 # clean and non-redundant arguments.
1542                 $result = wfMessage( 'editsection-brackets' )->rawParams( $link )
1543                         ->inLanguage( $lang )->escaped();
1544                 $result = "<span class=\"editsection\">$result</span>";
1545
1546                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1547                 return $result;
1548         }
1549
1550         /**
1551          * Use PHP's magic __call handler to intercept legacy calls to the linker
1552          * for backwards compatibility.
1553          *
1554          * @param string $fname Name of called method
1555          * @param array $args Arguments to the method
1556          * @throws MWException
1557          * @return mixed
1558          */
1559         function __call( $fname, $args ) {
1560                 $realFunction = array( 'Linker', $fname );
1561                 if ( is_callable( $realFunction ) ) {
1562                         wfDeprecated( get_class( $this ) . '::' . $fname, '1.21' );
1563                         return call_user_func_array( $realFunction, $args );
1564                 } else {
1565                         $className = get_class( $this );
1566                         throw new MWException( "Call to undefined method $className::$fname" );
1567                 }
1568         }
1569
1570 }