includes/Skin.php

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