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 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30
  31         /** Constructor, call parent constructor */
  32         function __construct() {
  33                 parent::__construct();
  34         }
  35
  36         /**
  37          * Fetch the set of available skins.
  38          * @return array of strings
  39          */
  40         static function getSkinNames() {
  41                 global $wgValidSkinNames;
  42                 static $skinsInitialised = false;
  43
  44                 if ( !$skinsInitialised ) {
  45                         # Get a list of available skins
  46                         # Build using the regular expression '^(.*).php$'
  47                         # Array keys are all lower case, array value keep the case used by filename
  48                         #
  49                         wfProfileIn( __METHOD__ . '-init' );
  50
  51                         global $wgStyleDirectory;
  52
  53                         $skinDir = dir( $wgStyleDirectory );
  54
  55                         # while code from www.php.net
  56                         while ( false !== ( $file = $skinDir->read() ) ) {
  57                                 // Skip non-PHP files, hidden files, and '.dep' includes
  58                                 $matches = array();
  59
  60                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  61                                         $aSkin = $matches[1];
  62                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  63                                 }
  64                         }
  65                         $skinDir->close();
  66                         $skinsInitialised = true;
  67                         wfProfileOut( __METHOD__ . '-init' );
  68                 }
  69                 return $wgValidSkinNames;
  70         }
  71
  72         /**
  73          * Fetch the list of usable skins in regards to $wgSkipSkins.
  74          * Useful for Special:Preferences and other places where you
  75          * only want to show skins users _can_ use.
  76          * @return array of strings
  77          */
  78         public static function getUsableSkins() {
  79                 global $wgSkipSkins;
  80
  81                 $usableSkins = self::getSkinNames();
  82
  83                 foreach ( $wgSkipSkins as $skip ) {
  84                         unset( $usableSkins[$skip] );
  85                 }
  86
  87                 return $usableSkins;
  88         }
  89
  90         /**
  91          * Normalize a skin preference value to a form that can be loaded.
  92          * If a skin can't be found, it will fall back to the configured
  93          * default (or the old 'Classic' skin if that's broken).
  94          * @param $key String: 'monobook', 'standard', etc.
  95          * @return string
  96          */
  97         static function normalizeKey( $key ) {
  98                 global $wgDefaultSkin;
  99
 100                 $skinNames = Skin::getSkinNames();
 101
 102                 if ( $key == '' ) {
 103                         // Don't return the default immediately;
 104                         // in a misconfiguration we need to fall back.
 105                         $key = $wgDefaultSkin;
 106                 }
 107
 108                 if ( isset( $skinNames[$key] ) ) {
 109                         return $key;
 110                 }
 111
 112                 // Older versions of the software used a numeric setting
 113                 // in the user preferences.
 114                 $fallback = array(
 115                         0 => $wgDefaultSkin,
 116                         1 => 'nostalgia',
 117                         2 => 'cologneblue'
 118                 );
 119
 120                 if ( isset( $fallback[$key] ) ) {
 121                         $key = $fallback[$key];
 122                 }
 123
 124                 if ( isset( $skinNames[$key] ) ) {
 125                         return $key;
 126                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 127                         return $wgDefaultSkin;
 128                 } else {
 129                         return 'vector';
 130                 }
 131         }
 132
 133         /**
 134          * Factory method for loading a skin of a given type
 135          * @param $key String: 'monobook', 'standard', etc.
 136          * @return Skin
 137          */
 138         static function &newFromKey( $key ) {
 139                 global $wgStyleDirectory;
 140
 141                 $key = Skin::normalizeKey( $key );
 142
 143                 $skinNames = Skin::getSkinNames();
 144                 $skinName = $skinNames[$key];
 145                 $className = 'Skin' . ucfirst( $key );
 146
 147                 # Grab the skin class and initialise it.
 148                 if ( !class_exists( $className ) ) {
 149                         // Preload base classes to work around APC/PHP5 bug
 150                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 151
 152                         if ( file_exists( $deps ) ) {
 153                                 include_once( $deps );
 154                         }
 155                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 156
 157                         # Check if we got if not failback to default skin
 158                         if ( !class_exists( $className ) ) {
 159                                 # DO NOT die if the class isn't found. This breaks maintenance
 160                                 # scripts and can cause a user account to be unrecoverable
 161                                 # except by SQL manipulation if a previously valid skin name
 162                                 # is no longer valid.
 163                                 wfDebug( "Skin class does not exist: $className\n" );
 164                                 $className = 'SkinVector';
 165                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 166                         }
 167                 }
 168                 $skin = new $className;
 169                 return $skin;
 170         }
 171
 172         /** @return string path to the skin stylesheet */
 173         function getStylesheet() {
 174                 return 'common/wikistandard.css';
 175         }
 176
 177         /** @return string skin name */
 178         public function getSkinName() {
 179                 return $this->skinname;
 180         }
 181
 182         function qbSetting() {
 183                 global $wgOut, $wgUser;
 184
 185                 if ( $wgOut->isQuickbarSuppressed() ) {
 186                         return 0;
 187                 }
 188
 189                 $q = $wgUser->getOption( 'quickbar', 0 );
 190
 191                 return $q;
 192         }
 193
 194         function initPage( OutputPage $out ) {
 195                 global $wgFavicon, $wgAppleTouchIcon;
 196
 197                 wfProfileIn( __METHOD__ );
 198
 199                 # Generally the order of the favicon and apple-touch-icon links
 200                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 201                 # uses whichever one appears later in the HTML source. Make sure
 202                 # apple-touch-icon is specified first to avoid this.
 203                 if ( false !== $wgAppleTouchIcon ) {
 204                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 205                 }
 206
 207                 if ( false !== $wgFavicon ) {
 208                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 209                 }
 210
 211                 # OpenSearch description link
 212                 $out->addLink( array(
 213                         'rel' => 'search',
 214                         'type' => 'application/opensearchdescription+xml',
 215                         'href' => wfScript( 'opensearch_desc' ),
 216                         'title' => wfMsgForContent( 'opensearch-desc' ),
 217                 ) );
 218
 219                 $this->addMetadataLinks( $out );
 220
 221                 $this->mRevisionId = $out->mRevisionId;
 222
 223                 $this->preloadExistence();
 224
 225                 wfProfileOut( __METHOD__ );
 226         }
 227
 228         /**
 229          * Preload the existence of three commonly-requested pages in a single query
 230          */
 231         function preloadExistence() {
 232                 global $wgUser;
 233
 234                 // User/talk link
 235                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 236
 237                 // Other tab link
 238                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 239                         // nothing
 240                 } elseif ( $this->mTitle->isTalkPage() ) {
 241                         $titles[] = $this->mTitle->getSubjectPage();
 242                 } else {
 243                         $titles[] = $this->mTitle->getTalkPage();
 244                 }
 245
 246                 $lb = new LinkBatch( $titles );
 247                 $lb->execute();
 248         }
 249
 250         /**
 251          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 252          * output.
 253          * @param $out Object: instance of OutputPage
 254          */
 255         function addMetadataLinks( OutputPage $out ) {
 256                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 257                 global $wgRightsPage, $wgRightsUrl;
 258
 259                 if ( $out->isArticleRelated() ) {
 260                         # note: buggy CC software only reads first "meta" link
 261                         if ( $wgEnableCreativeCommonsRdf ) {
 262                                 $out->addMetadataLink( array(
 263                                         'title' => 'Creative Commons',
 264                                         'type' => 'application/rdf+xml',
 265                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 266                                 );
 267                         }
 268
 269                         if ( $wgEnableDublinCoreRdf ) {
 270                                 $out->addMetadataLink( array(
 271                                         'title' => 'Dublin Core',
 272                                         'type' => 'application/rdf+xml',
 273                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 274                                 );
 275                         }
 276                 }
 277                 $copyright = '';
 278                 if ( $wgRightsPage ) {
 279                         $copy = Title::newFromText( $wgRightsPage );
 280
 281                         if ( $copy ) {
 282                                 $copyright = $copy->getLocalURL();
 283                         }
 284                 }
 285
 286                 if ( !$copyright && $wgRightsUrl ) {
 287                         $copyright = $wgRightsUrl;
 288                 }
 289
 290                 if ( $copyright ) {
 291                         $out->addLink( array(
 292                                 'rel' => 'copyright',
 293                                 'href' => $copyright )
 294                         );
 295                 }
 296         }
 297
 298         /**
 299          * Set some local variables
 300          */
 301         protected function setMembers() {
 302                 global $wgUser;
 303                 $this->mUser = $wgUser;
 304                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 305                 $this->usercss = false;
 306         }
 307
 308         /**
 309          * Set the title
 310          * @param $t Title object to use
 311          */
 312         public function setTitle( $t ) {
 313                 $this->mTitle = $t;
 314         }
 315
 316         /** Get the title */
 317         public function getTitle() {
 318                 return $this->mTitle;
 319         }
 320
 321         /**
 322          * Outputs the HTML generated by other functions.
 323          * @param $out Object: instance of OutputPage
 324          */
 325         function outputPage( OutputPage $out ) {
 326                 global $wgDebugComments;
 327                 wfProfileIn( __METHOD__ );
 328
 329                 $this->setMembers();
 330                 $this->initPage( $out );
 331
 332                 // See self::afterContentHook() for documentation
 333                 $afterContent = $this->afterContentHook();
 334
 335                 $out->out( $out->headElement( $this ) );
 336
 337                 if ( $wgDebugComments ) {
 338                         $out->out( "<!-- Wiki debugging output:\n" .
 339                           $out->mDebugtext . "-->\n" );
 340                 }
 341
 342                 $out->out( $this->beforeContent() );
 343
 344                 $out->out( $out->mBodytext . "\n" );
 345
 346                 $out->out( $this->afterContent() );
 347
 348                 $out->out( $afterContent );
 349
 350                 $out->out( $this->bottomScripts( $out ) );
 351
 352                 $out->out( wfReportTime() );
 353
 354                 $out->out( "\n</body></html>" );
 355                 wfProfileOut( __METHOD__ );
 356         }
 357
 358         static function makeVariablesScript( $data ) {
 359                 if ( $data ) {
 360                         return Html::inlineScript( 'mediaWiki.config.set(' . FormatJson::encode( $data ) . ');' );
 361                 } else {
 362                         return '';
 363                 }
 364         }
 365
 366         /**
 367          * Make a <script> tag containing global variables
 368          * @param $skinName string Name of the skin
 369          * The odd calling convention is for backwards compatibility
 370          * @todo FIXME: Make this not depend on $wgTitle!
 371          *
 372          * Do not add things here which can be evaluated in ResourceLoaderStartupScript - in other words, without state.
 373          * You will only be adding bloat to the page and causing page caches to have to be purged on configuration changes.
 374          */
 375         static function makeGlobalVariablesScript( $skinName ) {
 376                 global $wgTitle, $wgUser, $wgRequest, $wgArticle, $wgOut, $wgRestrictionTypes;
 377
 378                 $ns = $wgTitle->getNamespace();
 379                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 380                 $vars = array(
 381                         'wgCanonicalNamespace' => $nsname,
 382                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 383                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 384                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 385                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 386                         'wgTitle' => $wgTitle->getText(),
 387                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 388                         'wgArticleId' => $wgTitle->getArticleId(),
 389                         'wgIsArticle' => $wgOut->isArticle(),
 390                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 391                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 392                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 393                         'wgCategories' => $wgOut->getCategories(),
 394                 );
 395                 foreach ( $wgRestrictionTypes as $type ) {
 396                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 397                 }
 398
 399                 // Allow extensions to add their custom variables to the global JS variables
 400                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 401
 402                 return self::makeVariablesScript( $vars );
 403         }
 404
 405         /**
 406          * To make it harder for someone to slip a user a fake
 407          * user-JavaScript or user-CSS preview, a random token
 408          * is associated with the login session. If it's not
 409          * passed back with the preview request, we won't render
 410          * the code.
 411          *
 412          * @param $action String: 'edit', 'submit' etc.
 413          * @return bool
 414          */
 415         public function userCanPreview( $action ) {
 416                 global $wgRequest, $wgUser;
 417
 418                 if ( $action != 'submit' ) {
 419                         return false;
 420                 }
 421                 if ( !$wgRequest->wasPosted() ) {
 422                         return false;
 423                 }
 424                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 425                         return false;
 426                 }
 427                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 428                         return false;
 429                 }
 430
 431                 return $wgUser->matchEditToken(
 432                         $wgRequest->getVal( 'wpEditToken' ) );
 433         }
 434
 435         /**
 436          * Generated JavaScript action=raw&gen=js
 437          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 438          * nated together.  For some bizarre reason, it does *not* return any
 439          * custom user JS from subpages.  Huh?
 440          *
 441          * There's absolutely no reason to have separate Monobook/Common JSes.
 442          * Any JS that cares can just check the skin variable generated at the
 443          * top.  For now Monobook.js will be maintained, but it should be consi-
 444          * dered deprecated.
 445          *
 446          * @param $skinName String: If set, overrides the skin name
 447          * @return string
 448          */
 449         public function generateUserJs( $skinName = null ) {
 450
 451                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 452
 453                 return '';
 454         }
 455
 456         /**
 457          * Generate user stylesheet for action=raw&gen=css
 458          */
 459         public function generateUserStylesheet() {
 460
 461                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 462
 463                 return '';
 464         }
 465
 466         /**
 467          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 468          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 469          */
 470         protected function reallyGenerateUserStylesheet() {
 471
 472                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 473
 474                 return '';
 475         }
 476
 477         /**
 478          * @private
 479          */
 480         function setupUserCss( OutputPage $out ) {
 481                 global $wgRequest, $wgUser;
 482                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs, $wgSquidMaxage;
 483
 484                 wfProfileIn( __METHOD__ );
 485
 486                 $this->setupSkinUserCss( $out );
 487
 488                 $siteargs = array(
 489                         'action' => 'raw',
 490                         'maxage' => $wgSquidMaxage,
 491                 );
 492
 493                 // Add any extension CSS
 494                 foreach ( $out->getExtStyle() as $url ) {
 495                         $out->addStyle( $url );
 496                 }
 497
 498                 // Per-site custom styles
 499                 if ( $wgUseSiteCss ) {
 500                         $out->addModuleStyles( 'site' );
 501                 }
 502
 503                 // Per-user custom styles
 504                 if ( $wgAllowUserCss ) {
 505                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 506                                 // @FIXME: properly escape the cdata!
 507                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 508                         } else {
 509                                 $out->addModuleStyles( 'user' );
 510                         }
 511                 }
 512
 513                 // Per-user preference styles
 514                 if ( $wgAllowUserCssPrefs ) {
 515                         $out->addModuleStyles( 'user.preferences' );
 516                 }
 517
 518                 wfProfileOut( __METHOD__ );
 519         }
 520
 521         /**
 522          * Get the query to generate a dynamic stylesheet
 523          *
 524          * @return array
 525          */
 526         public static function getDynamicStylesheetQuery() {
 527                 global $wgSquidMaxage;
 528
 529                 return array(
 530                                 'action' => 'raw',
 531                                 'maxage' => $wgSquidMaxage,
 532                                 'usemsgcache' => 'yes',
 533                                 'ctype' => 'text/css',
 534                                 'smaxage' => $wgSquidMaxage,
 535                         );
 536         }
 537
 538         /**
 539          * Add skin specific stylesheets
 540          * @param $out OutputPage
 541          */
 542         function setupSkinUserCss( OutputPage $out ) {
 543                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 544                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 545                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 546                 $out->addStyle( $this->getStylesheet() );
 547                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 548         }
 549
 550         function getPageClasses( $title ) {
 551                 $numeric = 'ns-' . $title->getNamespace();
 552
 553                 if ( $title->getNamespace() == NS_SPECIAL ) {
 554                         $type = 'ns-special';
 555                 } elseif ( $title->isTalkPage() ) {
 556                         $type = 'ns-talk';
 557                 } else {
 558                         $type = 'ns-subject';
 559                 }
 560
 561                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 562
 563                 return "$numeric $type $name";
 564         }
 565
 566         /**
 567          * URL to the logo
 568          */
 569         function getLogo() {
 570                 global $wgLogo;
 571                 return $wgLogo;
 572         }
 573
 574         /**
 575          * This will be called immediately after the <body> tag.  Split into
 576          * two functions to make it easier to subclass.
 577          */
 578         function beforeContent() {
 579                 return $this->doBeforeContent();
 580         }
 581
 582         function doBeforeContent() {
 583                 global $wgContLang;
 584                 wfProfileIn( __METHOD__ );
 585
 586                 $s = '';
 587                 $qb = $this->qbSetting();
 588
 589                 $langlinks = $this->otherLanguages();
 590                 if ( $langlinks ) {
 591                         $rows = 2;
 592                         $borderhack = '';
 593                 } else {
 594                         $rows = 1;
 595                         $langlinks = false;
 596                         $borderhack = 'class="top"';
 597                 }
 598
 599                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 600                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 601
 602                 $shove = ( $qb != 0 );
 603                 $left = ( $qb == 1 || $qb == 3 );
 604
 605                 if ( $wgContLang->isRTL() ) {
 606                         $left = !$left;
 607                 }
 608
 609                 if ( !$shove ) {
 610                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 611                                 $this->logoText() . '</td>';
 612                 } elseif ( $left ) {
 613                         $s .= $this->getQuickbarCompensator( $rows );
 614                 }
 615
 616                 $l = $wgContLang->alignStart();
 617                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 618
 619                 $s .= $this->topLinks();
 620                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 621
 622                 $r = $wgContLang->alignEnd();
 623                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 624                 $s .= $this->nameAndLogin();
 625                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 626
 627                 if ( $langlinks ) {
 628                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 629                 }
 630
 631                 if ( $shove && !$left ) { # Right
 632                         $s .= $this->getQuickbarCompensator( $rows );
 633                 }
 634
 635                 $s .= "</tr>\n</table>\n</div>\n";
 636                 $s .= "\n<div id='article'>\n";
 637
 638                 $notice = wfGetSiteNotice();
 639
 640                 if ( $notice ) {
 641                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 642                 }
 643                 $s .= $this->pageTitle();
 644                 $s .= $this->pageSubtitle();
 645                 $s .= $this->getCategories();
 646
 647                 wfProfileOut( __METHOD__ );
 648                 return $s;
 649         }
 650
 651         function getCategoryLinks() {
 652                 global $wgOut, $wgUseCategoryBrowser;
 653                 global $wgContLang, $wgUser;
 654
 655                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 656                         return '';
 657                 }
 658
 659                 # Separator
 660                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 661
 662                 // Use Unicode bidi embedding override characters,
 663                 // to make sure links don't smash each other up in ugly ways.
 664                 $dir = $wgContLang->getDir();
 665                 $embed = "<span dir='$dir'>";
 666                 $pop = '</span>';
 667
 668                 $allCats = $wgOut->getCategoryLinks();
 669                 $s = '';
 670                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 671
 672                 if ( !empty( $allCats['normal'] ) ) {
 673                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 674
 675                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 676                         $s .= '<div id="mw-normal-catlinks">' .
 677                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 678                                 . $colon . $t . '</div>';
 679                 }
 680
 681                 # Hidden categories
 682                 if ( isset( $allCats['hidden'] ) ) {
 683                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 684                                 $class = 'mw-hidden-cats-user-shown';
 685                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 686                                 $class = 'mw-hidden-cats-ns-shown';
 687                         } else {
 688                                 $class = 'mw-hidden-cats-hidden';
 689                         }
 690
 691                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 692                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 693                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 694                                 '</div>';
 695                 }
 696
 697                 # optional 'dmoz-like' category browser. Will be shown under the list
 698                 # of categories an article belong to
 699                 if ( $wgUseCategoryBrowser ) {
 700                         $s .= '<br /><hr />';
 701
 702                         # get a big array of the parents tree
 703                         $parenttree = $this->mTitle->getParentCategoryTree();
 704                         # Skin object passed by reference cause it can not be
 705                         # accessed under the method subfunction drawCategoryBrowser
 706                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 707                         # Clean out bogus first entry and sort them
 708                         unset( $tempout[0] );
 709                         asort( $tempout );
 710                         # Output one per line
 711                         $s .= implode( "<br />\n", $tempout );
 712                 }
 713
 714                 return $s;
 715         }
 716
 717         /**
 718          * Render the array as a serie of links.
 719          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 720          * @param &skin Object: skin passed by reference
 721          * @return String separated by &gt;, terminate with "\n"
 722          */
 723         function drawCategoryBrowser( $tree, &$skin ) {
 724                 $return = '';
 725
 726                 foreach ( $tree as $element => $parent ) {
 727                         if ( empty( $parent ) ) {
 728                                 # element start a new list
 729                                 $return .= "\n";
 730                         } else {
 731                                 # grab the others elements
 732                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 733                         }
 734
 735                         # add our current element to the list
 736                         $eltitle = Title::newFromText( $element );
 737                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 738                 }
 739
 740                 return $return;
 741         }
 742
 743         function getCategories() {
 744                 $catlinks = $this->getCategoryLinks();
 745
 746                 $classes = 'catlinks';
 747
 748                 global $wgOut, $wgUser;
 749
 750                 // Check what we're showing
 751                 $allCats = $wgOut->getCategoryLinks();
 752                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 753                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 754
 755                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 756                         $classes .= ' catlinks-allhidden';
 757                 }
 758
 759                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 760         }
 761
 762         function getQuickbarCompensator( $rows = 1 ) {
 763                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 764         }
 765
 766         /**
 767          * This runs a hook to allow extensions placing their stuff after content
 768          * and article metadata (e.g. categories).
 769          * Note: This function has nothing to do with afterContent().
 770          *
 771          * This hook is placed here in order to allow using the same hook for all
 772          * skins, both the SkinTemplate based ones and the older ones, which directly
 773          * use this class to get their data.
 774          *
 775          * The output of this function gets processed in SkinTemplate::outputPage() for
 776          * the SkinTemplate based skins, all other skins should directly echo it.
 777          *
 778          * Returns an empty string by default, if not changed by any hook function.
 779          */
 780         protected function afterContentHook() {
 781                 $data = '';
 782
 783                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 784                         // adding just some spaces shouldn't toggle the output
 785                         // of the whole <div/>, so we use trim() here
 786                         if ( trim( $data ) != '' ) {
 787                                 // Doing this here instead of in the skins to
 788                                 // ensure that the div has the same ID in all
 789                                 // skins
 790                                 $data = "<div id='mw-data-after-content'>\n" .
 791                                         "\t$data\n" .
 792                                         "</div>\n";
 793                         }
 794                 } else {
 795                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 796                 }
 797
 798                 return $data;
 799         }
 800
 801         /**
 802          * Generate debug data HTML for displaying at the bottom of the main content
 803          * area.
 804          * @return String HTML containing debug data, if enabled (otherwise empty).
 805          */
 806         protected function generateDebugHTML() {
 807                 global $wgShowDebug, $wgOut;
 808
 809                 if ( $wgShowDebug ) {
 810                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 811                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 812                                 $listInternals . "</ul>\n";
 813                 }
 814
 815                 return '';
 816         }
 817
 818         private function formatDebugHTML( $debugText ) {
 819                 $lines = explode( "\n", $debugText );
 820                 $curIdent = 0;
 821                 $ret = '<li>';
 822
 823                 foreach ( $lines as $line ) {
 824                         $m = array();
 825                         $display = ltrim( $line );
 826                         $ident = strlen( $line ) - strlen( $display );
 827                         $diff = $ident - $curIdent;
 828
 829                         if ( $display == '' ) {
 830                                 $display = "\xc2\xa0";
 831                         }
 832
 833                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 834                                 $ident = $curIdent;
 835                                 $diff = 0;
 836                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 837                         } else {
 838                                 $display = htmlspecialchars( $display );
 839                         }
 840
 841                         if ( $diff < 0 ) {
 842                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 843                         } elseif ( $diff == 0 ) {
 844                                 $ret .= "</li><li>\n";
 845                         } else {
 846                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 847                         }
 848                         $ret .= $display . "\n";
 849
 850                         $curIdent = $ident;
 851                 }
 852
 853                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 854
 855                 return $ret;
 856         }
 857
 858         /**
 859          * This gets called shortly before the </body> tag.
 860          * @return String HTML to be put before </body>
 861          */
 862         function afterContent() {
 863                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 864                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 865         }
 866
 867         /**
 868          * This gets called shortly before the </body> tag.
 869          * @param $out OutputPage object
 870          * @return String HTML-wrapped JS code to be put before </body>
 871          */
 872         function bottomScripts( $out ) {
 873                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 874                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 875
 876                 return $bottomScriptText;
 877         }
 878
 879         /** @return string Retrievied from HTML text */
 880         function printSource() {
 881                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 882                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 883         }
 884
 885         function printFooter() {
 886                 return "<p>" .  $this->printSource() .
 887                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 888         }
 889
 890         /** overloaded by derived classes */
 891         function doAfterContent() {
 892                 return '</div></div>';
 893         }
 894
 895         function pageTitleLinks() {
 896                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 897
 898                 $oldid = $wgRequest->getVal( 'oldid' );
 899                 $diff = $wgRequest->getVal( 'diff' );
 900                 $action = $wgRequest->getText( 'action' );
 901
 902                 $s[] = $this->printableLink();
 903                 $disclaimer = $this->disclaimerLink(); # may be empty
 904
 905                 if ( $disclaimer ) {
 906                         $s[] = $disclaimer;
 907                 }
 908
 909                 $privacy = $this->privacyLink(); # may be empty too
 910
 911                 if ( $privacy ) {
 912                         $s[] = $privacy;
 913                 }
 914
 915                 if ( $wgOut->isArticleRelated() ) {
 916                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
 917                                 $name = $this->mTitle->getDBkey();
 918                                 $image = wfFindFile( $this->mTitle );
 919
 920                                 if ( $image ) {
 921                                         $link = htmlspecialchars( $image->getURL() );
 922                                         $style = $this->getInternalLinkAttributes( $link, $name );
 923                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 924                                 }
 925                         }
 926                 }
 927
 928                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 929                         $s[] .= $this->link(
 930                                         $this->mTitle,
 931                                         wfMsg( 'currentrev' ),
 932                                         array(),
 933                                         array(),
 934                                         array( 'known', 'noclasses' )
 935                         );
 936                 }
 937
 938                 if ( $wgUser->getNewtalk() ) {
 939                         # do not show "You have new messages" text when we are viewing our
 940                         # own talk page
 941                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
 942                                 $tl = $this->link(
 943                                         $wgUser->getTalkPage(),
 944                                         wfMsgHtml( 'newmessageslink' ),
 945                                         array(),
 946                                         array( 'redirect' => 'no' ),
 947                                         array( 'known', 'noclasses' )
 948                                 );
 949
 950                                 $dl = $this->link(
 951                                         $wgUser->getTalkPage(),
 952                                         wfMsgHtml( 'newmessagesdifflink' ),
 953                                         array(),
 954                                         array( 'diff' => 'cur' ),
 955                                         array( 'known', 'noclasses' )
 956                                 );
 957                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 958                                 # disable caching
 959                                 $wgOut->setSquidMaxage( 0 );
 960                                 $wgOut->enableClientCache( false );
 961                         }
 962                 }
 963
 964                 $undelete = $this->getUndeleteLink();
 965
 966                 if ( !empty( $undelete ) ) {
 967                         $s[] = $undelete;
 968                 }
 969
 970                 return $wgLang->pipeList( $s );
 971         }
 972
 973         function getUndeleteLink() {
 974                 global $wgUser, $wgLang, $wgRequest;
 975
 976                 $action = $wgRequest->getVal( 'action', 'view' );
 977
 978                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
 979                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
 980                         $n = $this->mTitle->isDeleted();
 981
 982                         if ( $n ) {
 983                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
 984                                         $msg = 'thisisdeleted';
 985                                 } else {
 986                                         $msg = 'viewdeleted';
 987                                 }
 988
 989                                 return wfMsg(
 990                                         $msg,
 991                                         $this->link(
 992                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
 993                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
 994                                                 array(),
 995                                                 array(),
 996                                                 array( 'known', 'noclasses' )
 997                                         )
 998                                 );
 999                         }
1000                 }
1001
1002                 return '';
1003         }
1004
1005         function printableLink() {
1006                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1007
1008                 $s = array();
1009
1010                 if ( !$wgOut->isPrintable() ) {
1011                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1012                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1013                 }
1014
1015                 if ( $wgOut->isSyndicated() ) {
1016                         foreach ( $wgFeedClasses as $format => $class ) {
1017                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1018                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1019                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1020                         }
1021                 }
1022                 return $wgLang->pipeList( $s );
1023         }
1024
1025         /**
1026          * Gets the h1 element with the page title.
1027          * @return string
1028          */
1029         function pageTitle() {
1030                 global $wgOut;
1031                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1032                 return $s;
1033         }
1034
1035         function pageSubtitle() {
1036                 global $wgOut;
1037
1038                 $sub = $wgOut->getSubtitle();
1039
1040                 if ( $sub == '' ) {
1041                         global $wgExtraSubtitle;
1042                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1043                 }
1044
1045                 $subpages = $this->subPageSubtitle();
1046                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1047                 $s = "<p class='subtitle'>{$sub}</p>\n";
1048
1049                 return $s;
1050         }
1051
1052         function subPageSubtitle() {
1053                 $subpages = '';
1054
1055                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1056                         return $subpages;
1057                 }
1058
1059                 global $wgOut;
1060
1061                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1062                         $ptext = $this->mTitle->getPrefixedText();
1063                         if ( preg_match( '/\//', $ptext ) ) {
1064                                 $links = explode( '/', $ptext );
1065                                 array_pop( $links );
1066                                 $c = 0;
1067                                 $growinglink = '';
1068                                 $display = '';
1069
1070                                 foreach ( $links as $link ) {
1071                                         $growinglink .= $link;
1072                                         $display .= $link;
1073                                         $linkObj = Title::newFromText( $growinglink );
1074
1075                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1076                                                 $getlink = $this->link(
1077                                                         $linkObj,
1078                                                         htmlspecialchars( $display ),
1079                                                         array(),
1080                                                         array(),
1081                                                         array( 'known', 'noclasses' )
1082                                                 );
1083
1084                                                 $c++;
1085
1086                                                 if ( $c > 1 ) {
1087                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1088                                                 } else  {
1089                                                         $subpages .= '&lt; ';
1090                                                 }
1091
1092                                                 $subpages .= $getlink;
1093                                                 $display = '';
1094                                         } else {
1095                                                 $display .= '/';
1096                                         }
1097                                         $growinglink .= '/';
1098                                 }
1099                         }
1100                 }
1101
1102                 return $subpages;
1103         }
1104
1105         /**
1106          * Returns true if the IP should be shown in the header
1107          */
1108         function showIPinHeader() {
1109                 global $wgShowIPinHeader;
1110                 return $wgShowIPinHeader && session_id() != '';
1111         }
1112
1113         function nameAndLogin() {
1114                 global $wgUser, $wgLang, $wgContLang;
1115
1116                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1117
1118                 $ret = '';
1119
1120                 if ( $wgUser->isAnon() ) {
1121                         if ( $this->showIPinHeader() ) {
1122                                 $name = wfGetIP();
1123
1124                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1125                                         $wgLang->getNsText( NS_TALK ) );
1126
1127                                 $ret .= "$name ($talkLink)";
1128                         } else {
1129                                 $ret .= wfMsg( 'notloggedin' );
1130                         }
1131
1132                         $returnTo = $this->mTitle->getPrefixedDBkey();
1133                         $query = array();
1134
1135                         if ( $logoutPage != $returnTo ) {
1136                                 $query['returnto'] = $returnTo;
1137                         }
1138
1139                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1140                                 ? 'nav-login-createaccount'
1141                                 : 'login';
1142                         $ret .= "\n<br />" . $this->link(
1143                                 SpecialPage::getTitleFor( 'Userlogin' ),
1144                                 wfMsg( $loginlink ), array(), $query
1145                         );
1146                 } else {
1147                         $returnTo = $this->mTitle->getPrefixedDBkey();
1148                         $talkLink = $this->link( $wgUser->getTalkPage(),
1149                                 $wgLang->getNsText( NS_TALK ) );
1150
1151                         $ret .= $this->link( $wgUser->getUserPage(),
1152                                 htmlspecialchars( $wgUser->getName() ) );
1153                         $ret .= " ($talkLink)<br />";
1154                         $ret .= $wgLang->pipeList( array(
1155                                 $this->link(
1156                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1157                                         array(), array( 'returnto' => $returnTo )
1158                                 ),
1159                                 $this->specialLink( 'preferences' ),
1160                         ) );
1161                 }
1162
1163                 $ret = $wgLang->pipeList( array(
1164                         $ret,
1165                         $this->link(
1166                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1167                                 wfMsg( 'help' )
1168                         ),
1169                 ) );
1170
1171                 return $ret;
1172         }
1173
1174         function getSearchLink() {
1175                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1176                 return $searchPage->getLocalURL();
1177         }
1178
1179         function escapeSearchLink() {
1180                 return htmlspecialchars( $this->getSearchLink() );
1181         }
1182
1183         function searchForm() {
1184                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1185
1186                 $search = $wgRequest->getText( 'search' );
1187
1188                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1189                   . $this->escapeSearchLink() . "\">\n"
1190                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1191                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1192                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1193
1194                 if ( $wgUseTwoButtonsSearchForm ) {
1195                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1196                 } else {
1197                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1198                 }
1199
1200                 $s .= '</form>';
1201
1202                 // Ensure unique id's for search boxes made after the first
1203                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1204
1205                 return $s;
1206         }
1207
1208         function topLinks() {
1209                 global $wgOut;
1210
1211                 $s = array(
1212                         $this->mainPageLink(),
1213                         $this->specialLink( 'recentchanges' )
1214                 );
1215
1216                 if ( $wgOut->isArticleRelated() ) {
1217                         $s[] = $this->editThisPage();
1218                         $s[] = $this->historyLink();
1219                 }
1220
1221                 # Many people don't like this dropdown box
1222                 # $s[] = $this->specialPagesList();
1223
1224                 if ( $this->variantLinks() ) {
1225                         $s[] = $this->variantLinks();
1226                 }
1227
1228                 if ( $this->extensionTabLinks() ) {
1229                         $s[] = $this->extensionTabLinks();
1230                 }
1231
1232                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1233                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1234         }
1235
1236         /**
1237          * Compatibility for extensions adding functionality through tabs.
1238          * Eventually these old skins should be replaced with SkinTemplate-based
1239          * versions, sigh...
1240          * @return string
1241          */
1242         function extensionTabLinks() {
1243                 $tabs = array();
1244                 $out = '';
1245                 $s = array();
1246                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1247                 foreach ( $tabs as $tab ) {
1248                         $s[] = Xml::element( 'a',
1249                                 array( 'href' => $tab['href'] ),
1250                                 $tab['text'] );
1251                 }
1252
1253                 if ( count( $s ) ) {
1254                         global $wgLang;
1255
1256                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1257                         $out .= $wgLang->pipeList( $s );
1258                 }
1259
1260                 return $out;
1261         }
1262
1263         /**
1264          * Language/charset variant links for classic-style skins
1265          * @return string
1266          */
1267         function variantLinks() {
1268                 $s = '';
1269
1270                 /* show links to different language variants */
1271                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1272
1273                 $variants = $wgContLang->getVariants();
1274
1275                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1276                         foreach ( $variants as $code ) {
1277                                 $varname = $wgContLang->getVariantname( $code );
1278
1279                                 if ( $varname == 'disable' ) {
1280                                         continue;
1281                                 }
1282                                 $s = $wgLang->pipeList( array(
1283                                         $s,
1284                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1285                                 ) );
1286                         }
1287                 }
1288
1289                 return $s;
1290         }
1291
1292         function bottomLinks() {
1293                 global $wgOut, $wgUser, $wgUseTrackbacks;
1294                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1295
1296                 $s = '';
1297                 if ( $wgOut->isArticleRelated() ) {
1298                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1299
1300                         if ( $wgUser->isLoggedIn() ) {
1301                                 $element[] = $this->watchThisPage();
1302                         }
1303
1304                         $element[] = $this->talkLink();
1305                         $element[] = $this->historyLink();
1306                         $element[] = $this->whatLinksHere();
1307                         $element[] = $this->watchPageLinksLink();
1308
1309                         if ( $wgUseTrackbacks ) {
1310                                 $element[] = $this->trackbackLink();
1311                         }
1312
1313                         if (
1314                                 $this->mTitle->getNamespace() == NS_USER ||
1315                                 $this->mTitle->getNamespace() == NS_USER_TALK
1316                         ) {
1317                                 $id = User::idFromName( $this->mTitle->getText() );
1318                                 $ip = User::isIP( $this->mTitle->getText() );
1319
1320                                 # Both anons and non-anons have contributions list
1321                                 if ( $id || $ip ) {
1322                                         $element[] = $this->userContribsLink();
1323                                 }
1324
1325                                 if ( $this->showEmailUser( $id ) ) {
1326                                         $element[] = $this->emailUserLink();
1327                                 }
1328                         }
1329
1330                         $s = implode( $element, $sep );
1331
1332                         if ( $this->mTitle->getArticleId() ) {
1333                                 $s .= "\n<br />";
1334
1335                                 // Delete/protect/move links for privileged users
1336                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1337                                         $s .= $this->deleteThisPage();
1338                                 }
1339
1340                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1341                                         $s .= $sep . $this->protectThisPage();
1342                                 }
1343
1344                                 if ( $wgUser->isAllowed( 'move' ) ) {
1345                                         $s .= $sep . $this->moveThisPage();
1346                                 }
1347                         }
1348
1349                         $s .= "<br />\n" . $this->otherLanguages();
1350                 }
1351
1352                 return $s;
1353         }
1354
1355         function pageStats() {
1356                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1357                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1358
1359                 $oldid = $wgRequest->getVal( 'oldid' );
1360                 $diff = $wgRequest->getVal( 'diff' );
1361
1362                 if ( !$wgOut->isArticle() ) {
1363                         return '';
1364                 }
1365
1366                 if ( !$wgArticle instanceof Article ) {
1367                         return '';
1368                 }
1369
1370                 if ( isset( $oldid ) || isset( $diff ) ) {
1371                         return '';
1372                 }
1373
1374                 if ( 0 == $wgArticle->getID() ) {
1375                         return '';
1376                 }
1377
1378                 $s = '';
1379
1380                 if ( !$wgDisableCounters ) {
1381                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1382
1383                         if ( $count ) {
1384                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1385                         }
1386                 }
1387
1388                 if ( $wgMaxCredits != 0 ) {
1389                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1390                 } else {
1391                         $s .= $this->lastModified();
1392                 }
1393
1394                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1395                         $dbr = wfGetDB( DB_SLAVE );
1396                         $res = $dbr->select(
1397                                 'watchlist',
1398                                 array( 'COUNT(*) AS n' ),
1399                                 array(
1400                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1401                                         'wl_namespace' => $this->mTitle->getNamespace()
1402                                 ),
1403                                 __METHOD__
1404                         );
1405                         $x = $dbr->fetchObject( $res );
1406
1407                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1408                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1409                         );
1410                 }
1411
1412                 return $s . ' ' .  $this->getCopyright();
1413         }
1414
1415         function getCopyright( $type = 'detect' ) {
1416                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1417
1418                 if ( $type == 'detect' ) {
1419                         $diff = $wgRequest->getVal( 'diff' );
1420                         $isCur = $wgArticle && $wgArticle->isCurrent();
1421
1422                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1423                                 $type = 'history';
1424                         } else {
1425                                 $type = 'normal';
1426                         }
1427                 }
1428
1429                 if ( $type == 'history' ) {
1430                         $msg = 'history_copyright';
1431                 } else {
1432                         $msg = 'copyright';
1433                 }
1434
1435                 $out = '';
1436
1437                 if ( $wgRightsPage ) {
1438                         $title = Title::newFromText( $wgRightsPage );
1439                         $link = $this->linkKnown( $title, $wgRightsText );
1440                 } elseif ( $wgRightsUrl ) {
1441                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1442                 } elseif ( $wgRightsText ) {
1443                         $link = $wgRightsText;
1444                 } else {
1445                         # Give up now
1446                         return $out;
1447                 }
1448
1449                 // Allow for site and per-namespace customization of copyright notice.
1450                 $forContent = true;
1451
1452                 if ( isset( $wgArticle ) ) {
1453                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1454                 }
1455
1456                 if ( $forContent ) {
1457                         $out .= wfMsgForContent( $msg, $link );
1458                 } else {
1459                         $out .= wfMsg( $msg, $link );
1460                 }
1461
1462                 return $out;
1463         }
1464
1465         function getCopyrightIcon() {
1466                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1467
1468                 $out = '';
1469
1470                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1471                         $out = $wgCopyrightIcon;
1472                 } elseif ( $wgRightsIcon ) {
1473                         $icon = htmlspecialchars( $wgRightsIcon );
1474
1475                         if ( $wgRightsUrl ) {
1476                                 $url = htmlspecialchars( $wgRightsUrl );
1477                                 $out .= '<a href="' . $url . '">';
1478                         }
1479
1480                         $text = htmlspecialchars( $wgRightsText );
1481                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1482
1483                         if ( $wgRightsUrl ) {
1484                                 $out .= '</a>';
1485                         }
1486                 }
1487
1488                 return $out;
1489         }
1490
1491         /**
1492          * Gets the powered by MediaWiki icon.
1493          * @return string
1494          */
1495         function getPoweredBy() {
1496                 global $wgStylePath;
1497
1498                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1499                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1500
1501                 return $img;
1502         }
1503
1504         function lastModified() {
1505                 global $wgLang, $wgArticle;
1506
1507                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1508                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1509                 } else {
1510                         $timestamp = $wgArticle->getTimestamp();
1511                 }
1512
1513                 if ( $timestamp ) {
1514                         $d = $wgLang->date( $timestamp, true );
1515                         $t = $wgLang->time( $timestamp, true );
1516                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1517                 } else {
1518                         $s = '';
1519                 }
1520
1521                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1522                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1523                 }
1524
1525                 return $s;
1526         }
1527
1528         function logoText( $align = '' ) {
1529                 if ( $align != '' ) {
1530                         $a = " align='{$align}'";
1531                 } else {
1532                         $a = '';
1533                 }
1534
1535                 $mp = wfMsg( 'mainpage' );
1536                 $mptitle = Title::newMainPage();
1537                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1538
1539                 $logourl = $this->getLogo();
1540                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1541
1542                 return $s;
1543         }
1544
1545         /**
1546          * Show a drop-down box of special pages
1547          */
1548         function specialPagesList() {
1549                 global $wgContLang, $wgServer, $wgRedirectScript;
1550
1551                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1552
1553                 foreach ( $pages as $name => $page ) {
1554                         $pages[$name] = $page->getDescription();
1555                 }
1556
1557                 $go = wfMsg( 'go' );
1558                 $sp = wfMsg( 'specialpages' );
1559                 $spp = $wgContLang->specialPage( 'Specialpages' );
1560
1561                 $s = '<form id="specialpages" method="get" ' .
1562                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1563                 $s .= "<select name=\"wpDropdown\">\n";
1564                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1565
1566
1567                 foreach ( $pages as $name => $desc ) {
1568                         $p = $wgContLang->specialPage( $name );
1569                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1570                 }
1571
1572                 $s .= "</select>\n";
1573                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1574                 $s .= "</form>\n";
1575
1576                 return $s;
1577         }
1578
1579         /**
1580          * Gets the link to the wiki's main page.
1581          * @return string
1582          */
1583         function mainPageLink() {
1584                 $s = $this->link(
1585                         Title::newMainPage(),
1586                         wfMsg( 'mainpage' ),
1587                         array(),
1588                         array(),
1589                         array( 'known', 'noclasses' )
1590                 );
1591
1592                 return $s;
1593         }
1594
1595         private function footerLink( $desc, $page ) {
1596                 // if the link description has been set to "-" in the default language,
1597                 if ( wfMsgForContent( $desc )  == '-' ) {
1598                         // then it is disabled, for all languages.
1599                         return '';
1600                 } else {
1601                         // Otherwise, we display the link for the user, described in their
1602                         // language (which may or may not be the same as the default language),
1603                         // but we make the link target be the one site-wide page.
1604                         $title = Title::newFromText( wfMsgForContent( $page ) );
1605
1606                         return $this->linkKnown(
1607                                 $title,
1608                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1609                         );
1610                 }
1611         }
1612
1613         /**
1614          * Gets the link to the wiki's privacy policy page.
1615          */
1616         function privacyLink() {
1617                 return $this->footerLink( 'privacy', 'privacypage' );
1618         }
1619
1620         /**
1621          * Gets the link to the wiki's about page.
1622          */
1623         function aboutLink() {
1624                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1625         }
1626
1627         /**
1628          * Gets the link to the wiki's general disclaimers page.
1629          */
1630         function disclaimerLink() {
1631                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1632         }
1633
1634         function editThisPage() {
1635                 global $wgOut;
1636
1637                 if ( !$wgOut->isArticleRelated() ) {
1638                         $s = wfMsg( 'protectedpage' );
1639                 } else {
1640                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1641                                 $t = wfMsg( 'editthispage' );
1642                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1643                                 $t = wfMsg( 'create-this-page' );
1644                         } else {
1645                                 $t = wfMsg( 'viewsource' );
1646                         }
1647
1648                         $s = $this->link(
1649                                 $this->mTitle,
1650                                 $t,
1651                                 array(),
1652                                 $this->editUrlOptions(),
1653                                 array( 'known', 'noclasses' )
1654                         );
1655                 }
1656
1657                 return $s;
1658         }
1659
1660         /**
1661          * Return URL options for the 'edit page' link.
1662          * This may include an 'oldid' specifier, if the current page view is such.
1663          *
1664          * @return array
1665          * @private
1666          */
1667         function editUrlOptions() {
1668                 global $wgArticle;
1669
1670                 $options = array( 'action' => 'edit' );
1671
1672                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1673                         $options['oldid'] = intval( $this->mRevisionId );
1674                 }
1675
1676                 return $options;
1677         }
1678
1679         function deleteThisPage() {
1680                 global $wgUser, $wgRequest;
1681
1682                 $diff = $wgRequest->getVal( 'diff' );
1683
1684                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1685                         $t = wfMsg( 'deletethispage' );
1686
1687                         $s = $this->link(
1688                                 $this->mTitle,
1689                                 $t,
1690                                 array(),
1691                                 array( 'action' => 'delete' ),
1692                                 array( 'known', 'noclasses' )
1693                         );
1694                 } else {
1695                         $s = '';
1696                 }
1697
1698                 return $s;
1699         }
1700
1701         function protectThisPage() {
1702                 global $wgUser, $wgRequest;
1703
1704                 $diff = $wgRequest->getVal( 'diff' );
1705
1706                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1707                         if ( $this->mTitle->isProtected() ) {
1708                                 $text = wfMsg( 'unprotectthispage' );
1709                                 $query = array( 'action' => 'unprotect' );
1710                         } else {
1711                                 $text = wfMsg( 'protectthispage' );
1712                                 $query = array( 'action' => 'protect' );
1713                         }
1714
1715                         $s = $this->link(
1716                                 $this->mTitle,
1717                                 $text,
1718                                 array(),
1719                                 $query,
1720                                 array( 'known', 'noclasses' )
1721                         );
1722                 } else {
1723                         $s = '';
1724                 }
1725
1726                 return $s;
1727         }
1728
1729         function watchThisPage() {
1730                 global $wgOut;
1731                 ++$this->mWatchLinkNum;
1732
1733                 if ( $wgOut->isArticleRelated() ) {
1734                         if ( $this->mTitle->userIsWatching() ) {
1735                                 $text = wfMsg( 'unwatchthispage' );
1736                                 $query = array( 'action' => 'unwatch' );
1737                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1738                         } else {
1739                                 $text = wfMsg( 'watchthispage' );
1740                                 $query = array( 'action' => 'watch' );
1741                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1742                         }
1743
1744                         $s = $this->link(
1745                                 $this->mTitle,
1746                                 $text,
1747                                 array( 'id' => $id ),
1748                                 $query,
1749                                 array( 'known', 'noclasses' )
1750                         );
1751                 } else {
1752                         $s = wfMsg( 'notanarticle' );
1753                 }
1754
1755                 return $s;
1756         }
1757
1758         function moveThisPage() {
1759                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1760                         return $this->link(
1761                                 SpecialPage::getTitleFor( 'Movepage' ),
1762                                 wfMsg( 'movethispage' ),
1763                                 array(),
1764                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1765                                 array( 'known', 'noclasses' )
1766                         );
1767                 } else {
1768                         // no message if page is protected - would be redundant
1769                         return '';
1770                 }
1771         }
1772
1773         function historyLink() {
1774                 return $this->link(
1775                         $this->mTitle,
1776                         wfMsgHtml( 'history' ),
1777                         array( 'rel' => 'archives' ),
1778                         array( 'action' => 'history' )
1779                 );
1780         }
1781
1782         function whatLinksHere() {
1783                 return $this->link(
1784                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1785                         wfMsgHtml( 'whatlinkshere' ),
1786                         array(),
1787                         array(),
1788                         array( 'known', 'noclasses' )
1789                 );
1790         }
1791
1792         function userContribsLink() {
1793                 return $this->link(
1794                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1795                         wfMsgHtml( 'contributions' ),
1796                         array(),
1797                         array(),
1798                         array( 'known', 'noclasses' )
1799                 );
1800         }
1801
1802         function showEmailUser( $id ) {
1803                 global $wgUser;
1804                 $targetUser = User::newFromId( $id );
1805                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1806                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1807         }
1808
1809         function emailUserLink() {
1810                 return $this->link(
1811                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1812                         wfMsg( 'emailuser' ),
1813                         array(),
1814                         array(),
1815                         array( 'known', 'noclasses' )
1816                 );
1817         }
1818
1819         function watchPageLinksLink() {
1820                 global $wgOut;
1821
1822                 if ( !$wgOut->isArticleRelated() ) {
1823                         return '(' . wfMsg( 'notanarticle' ) . ')';
1824                 } else {
1825                         return $this->link(
1826                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1827                                 wfMsg( 'recentchangeslinked-toolbox' ),
1828                                 array(),
1829                                 array(),
1830                                 array( 'known', 'noclasses' )
1831                         );
1832                 }
1833         }
1834
1835         function trackbackLink() {
1836                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1837                         . wfMsg( 'trackbacklink' ) . '</a>';
1838         }
1839
1840         function otherLanguages() {
1841                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1842
1843                 if ( $wgHideInterlanguageLinks ) {
1844                         return '';
1845                 }
1846
1847                 $a = $wgOut->getLanguageLinks();
1848
1849                 if ( 0 == count( $a ) ) {
1850                         return '';
1851                 }
1852
1853                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1854                 $first = true;
1855
1856                 if ( $wgContLang->isRTL() ) {
1857                         $s .= '<span dir="LTR">';
1858                 }
1859
1860                 foreach ( $a as $l ) {
1861                         if ( !$first ) {
1862                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1863                         }
1864
1865                         $first = false;
1866
1867                         $nt = Title::newFromText( $l );
1868                         $url = $nt->escapeFullURL();
1869                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1870                         $title = htmlspecialchars( $nt->getText() );
1871
1872                         if ( $text == '' ) {
1873                                 $text = $l;
1874                         }
1875
1876                         $style = $this->getExternalLinkAttributes();
1877                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1878                 }
1879
1880                 if ( $wgContLang->isRTL() ) {
1881                         $s .= '</span>';
1882                 }
1883
1884                 return $s;
1885         }
1886
1887         function talkLink() {
1888                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1889                         # No discussion links for special pages
1890                         return '';
1891                 }
1892
1893                 $linkOptions = array();
1894
1895                 if ( $this->mTitle->isTalkPage() ) {
1896                         $link = $this->mTitle->getSubjectPage();
1897                         switch( $link->getNamespace() ) {
1898                                 case NS_MAIN:
1899                                         $text = wfMsg( 'articlepage' );
1900                                         break;
1901                                 case NS_USER:
1902                                         $text = wfMsg( 'userpage' );
1903                                         break;
1904                                 case NS_PROJECT:
1905                                         $text = wfMsg( 'projectpage' );
1906                                         break;
1907                                 case NS_FILE:
1908                                         $text = wfMsg( 'imagepage' );
1909                                         # Make link known if image exists, even if the desc. page doesn't.
1910                                         if ( wfFindFile( $link ) )
1911                                                 $linkOptions[] = 'known';
1912                                         break;
1913                                 case NS_MEDIAWIKI:
1914                                         $text = wfMsg( 'mediawikipage' );
1915                                         break;
1916                                 case NS_TEMPLATE:
1917                                         $text = wfMsg( 'templatepage' );
1918                                         break;
1919                                 case NS_HELP:
1920                                         $text = wfMsg( 'viewhelppage' );
1921                                         break;
1922                                 case NS_CATEGORY:
1923                                         $text = wfMsg( 'categorypage' );
1924                                         break;
1925                                 default:
1926                                         $text = wfMsg( 'articlepage' );
1927                         }
1928                 } else {
1929                         $link = $this->mTitle->getTalkPage();
1930                         $text = wfMsg( 'talkpage' );
1931                 }
1932
1933                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1934
1935                 return $s;
1936         }
1937
1938         function commentLink() {
1939                 global $wgOut;
1940
1941                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1942                         return '';
1943                 }
1944
1945                 # __NEWSECTIONLINK___ changes behaviour here
1946                 # If it is present, the link points to this page, otherwise
1947                 # it points to the talk page
1948                 if ( $this->mTitle->isTalkPage() ) {
1949                         $title = $this->mTitle;
1950                 } elseif ( $wgOut->showNewSectionLink() ) {
1951                         $title = $this->mTitle;
1952                 } else {
1953                         $title = $this->mTitle->getTalkPage();
1954                 }
1955
1956                 return $this->link(
1957                         $title,
1958                         wfMsg( 'postcomment' ),
1959                         array(),
1960                         array(
1961                                 'action' => 'edit',
1962                                 'section' => 'new'
1963                         ),
1964                         array( 'known', 'noclasses' )
1965                 );
1966         }
1967
1968         function getUploadLink() {
1969                 global $wgUploadNavigationUrl;
1970
1971                 if ( $wgUploadNavigationUrl ) {
1972                         # Using an empty class attribute to avoid automatic setting of "external" class
1973                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
1974                 } else {
1975                         return $this->link(
1976                                 SpecialPage::getTitleFor( 'Upload' ),
1977                                 wfMsgHtml( 'upload' ),
1978                                 array(),
1979                                 array(),
1980                                 array( 'known', 'noclasses' )
1981                         );
1982                 }
1983         }
1984
1985         /* these are used extensively in SkinTemplate, but also some other places */
1986         static function makeMainPageUrl( $urlaction = '' ) {
1987                 $title = Title::newMainPage();
1988                 self::checkTitle( $title, '' );
1989
1990                 return $title->getLocalURL( $urlaction );
1991         }
1992
1993         static function makeSpecialUrl( $name, $urlaction = '' ) {
1994                 $title = SpecialPage::getTitleFor( $name );
1995                 return $title->getLocalURL( $urlaction );
1996         }
1997
1998         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1999                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2000                 return $title->getLocalURL( $urlaction );
2001         }
2002
2003         static function makeI18nUrl( $name, $urlaction = '' ) {
2004                 $title = Title::newFromText( wfMsgForContent( $name ) );
2005                 self::checkTitle( $title, $name );
2006                 return $title->getLocalURL( $urlaction );
2007         }
2008
2009         static function makeUrl( $name, $urlaction = '' ) {
2010                 $title = Title::newFromText( $name );
2011                 self::checkTitle( $title, $name );
2012
2013                 return $title->getLocalURL( $urlaction );
2014         }
2015
2016         /**
2017          * If url string starts with http, consider as external URL, else
2018          * internal
2019          */
2020         static function makeInternalOrExternalUrl( $name ) {
2021                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2022                         return $name;
2023                 } else {
2024                         return self::makeUrl( $name );
2025                 }
2026         }
2027
2028         # this can be passed the NS number as defined in Language.php
2029         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2030                 $title = Title::makeTitleSafe( $namespace, $name );
2031                 self::checkTitle( $title, $name );
2032
2033                 return $title->getLocalURL( $urlaction );
2034         }
2035
2036         /* these return an array with the 'href' and boolean 'exists' */
2037         static function makeUrlDetails( $name, $urlaction = '' ) {
2038                 $title = Title::newFromText( $name );
2039                 self::checkTitle( $title, $name );
2040
2041                 return array(
2042                         'href' => $title->getLocalURL( $urlaction ),
2043                         'exists' => $title->getArticleID() != 0 ? true : false
2044                 );
2045         }
2046
2047         /**
2048          * Make URL details where the article exists (or at least it's convenient to think so)
2049          */
2050         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2051                 $title = Title::newFromText( $name );
2052                 self::checkTitle( $title, $name );
2053
2054                 return array(
2055                         'href' => $title->getLocalURL( $urlaction ),
2056                         'exists' => true
2057                 );
2058         }
2059
2060         # make sure we have some title to operate on
2061         static function checkTitle( &$title, $name ) {
2062                 if ( !is_object( $title ) ) {
2063                         $title = Title::newFromText( $name );
2064                         if ( !is_object( $title ) ) {
2065                                 $title = Title::newFromText( '--error: link target missing--' );
2066                         }
2067                 }
2068         }
2069
2070         /**
2071          * Build an array that represents the sidebar(s), the navigation bar among them
2072          *
2073          * @return array
2074          */
2075         function buildSidebar() {
2076                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2077                 global $wgLang;
2078                 wfProfileIn( __METHOD__ );
2079
2080                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2081
2082                 if ( $wgEnableSidebarCache ) {
2083                         $cachedsidebar = $parserMemc->get( $key );
2084                         if ( $cachedsidebar ) {
2085                                 wfProfileOut( __METHOD__ );
2086                                 return $cachedsidebar;
2087                         }
2088                 }
2089
2090                 $bar = array();
2091                 $this->addToSidebar( $bar, 'sidebar' );
2092
2093                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2094                 if ( $wgEnableSidebarCache ) {
2095                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2096                 }
2097
2098                 wfProfileOut( __METHOD__ );
2099                 return $bar;
2100         }
2101         /**
2102          * Add content from a sidebar system message
2103          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2104          *
2105          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2106          *
2107          * @param &$bar array
2108          * @param $message String
2109          */
2110         function addToSidebar( &$bar, $message ) {
2111                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2112         }
2113
2114         /**
2115          * Add content from plain text
2116          * @since 1.17
2117          * @param &$bar array
2118          * @param $text string
2119          */
2120         function addToSidebarPlain( &$bar, $text ) {
2121                 $lines = explode( "\n", $text );
2122                 $wikiBar = array(); # We need to handle the wikitext on a different variable, to avoid trying to do an array operation on text, which would be a fatal error.
2123
2124                 $heading = '';
2125
2126                 foreach ( $lines as $line ) {
2127                         if ( strpos( $line, '*' ) !== 0 ) {
2128                                 continue;
2129                         }
2130
2131                         if ( strpos( $line, '**' ) !== 0 ) {
2132                                 $heading = trim( $line, '* ' );
2133                                 if ( !array_key_exists( $heading, $bar ) ) {
2134                                         $bar[$heading] = array();
2135                                 }
2136                         } else {
2137                                 $line = trim( $line, '* ' );
2138
2139                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2140                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2141                                         $link = wfMsgForContent( $line[0] );
2142
2143                                         if ( $link == '-' ) {
2144                                                 continue;
2145                                         }
2146
2147                                         $text = wfMsgExt( $line[1], 'parsemag' );
2148
2149                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2150                                                 $text = $line[1];
2151                                         }
2152
2153                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2154                                                 $link = $line[0];
2155                                         }
2156
2157                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2158                                                 $href = $link;
2159                                         } else {
2160                                                 $title = Title::newFromText( $link );
2161
2162                                                 if ( $title ) {
2163                                                         $title = $title->fixSpecialName();
2164                                                         $href = $title->getLocalURL();
2165                                                 } else {
2166                                                         $href = 'INVALID-TITLE';
2167                                                 }
2168                                         }
2169
2170                                         $bar[$heading][] = array(
2171                                                 'text' => $text,
2172                                                 'href' => $href,
2173                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2174                                                 'active' => false
2175                                         );
2176                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2177                                         global $wgParser, $wgTitle;
2178
2179                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2180
2181                                         if ( is_null( $wgParser->mOptions ) ) {
2182                                                 $wgParser->mOptions = new ParserOptions();
2183                                         }
2184
2185                                         $wgParser->mOptions->setEditSection( false );
2186                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2187                                 } else {
2188                                         continue;
2189                                 }
2190                         }
2191                 }
2192
2193                 if ( count( $wikiBar ) > 0 ) {
2194                         $bar = array_merge( $bar, $wikiBar );
2195                 }
2196
2197                 return $bar;
2198         }
2199
2200         /**
2201          * Should we include common/wikiprintable.css?  Skins that have their own
2202          * print stylesheet should override this and return false.  (This is an
2203          * ugly hack to get Monobook to play nicely with
2204          * OutputPage::headElement().)
2205          *
2206          * @return bool
2207          */
2208         public function commonPrintStylesheet() {
2209                 return true;
2210         }
2211
2212         /**
2213          * Gets new talk page messages for the current user.
2214          * @return MediaWiki message or if no new talk page messages, nothing
2215          */
2216         function getNewtalks() {
2217                 global $wgUser, $wgOut;
2218
2219                 $newtalks = $wgUser->getNewMessageLinks();
2220                 $ntl = '';
2221
2222                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2223                         $userTitle = $this->mUser->getUserPage();
2224                         $userTalkTitle = $userTitle->getTalkPage();
2225
2226                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2227                                 $newMessagesLink = $this->link(
2228                                         $userTalkTitle,
2229                                         wfMsgHtml( 'newmessageslink' ),
2230                                         array(),
2231                                         array( 'redirect' => 'no' ),
2232                                         array( 'known', 'noclasses' )
2233                                 );
2234
2235                                 $newMessagesDiffLink = $this->link(
2236                                         $userTalkTitle,
2237                                         wfMsgHtml( 'newmessagesdifflink' ),
2238                                         array(),
2239                                         array( 'diff' => 'cur' ),
2240                                         array( 'known', 'noclasses' )
2241                                 );
2242
2243                                 $ntl = wfMsg(
2244                                         'youhavenewmessages',
2245                                         $newMessagesLink,
2246                                         $newMessagesDiffLink
2247                                 );
2248                                 # Disable Squid cache
2249                                 $wgOut->setSquidMaxage( 0 );
2250                         }
2251                 } elseif ( count( $newtalks ) ) {
2252                         // _>" " for BC <= 1.16
2253                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2254                         $msgs = array();
2255
2256                         foreach ( $newtalks as $newtalk ) {
2257                                 $msgs[] = Xml::element(
2258                                         'a',
2259                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2260                                 );
2261                         }
2262                         $parts = implode( $sep, $msgs );
2263                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2264                         $wgOut->setSquidMaxage( 0 );
2265                 }
2266
2267                 return $ntl;
2268         }
2269 }