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 176                                 # is no longer valid.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