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->setCaller( __METHOD__ );
 248                 $lb->execute();
 249         }
 250
 251         /**
 252          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 253          * output.
 254          * @param $out Object: instance of OutputPage
 255          */
 256         function addMetadataLinks( OutputPage $out ) {
 257                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 258                 global $wgRightsPage, $wgRightsUrl;
 259
 260                 if ( $out->isArticleRelated() ) {
 261                         # note: buggy CC software only reads first "meta" link
 262                         if ( $wgEnableCreativeCommonsRdf ) {
 263                                 $out->addMetadataLink( array(
 264                                         'title' => 'Creative Commons',
 265                                         'type' => 'application/rdf+xml',
 266                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 267                                 );
 268                         }
 269
 270                         if ( $wgEnableDublinCoreRdf ) {
 271                                 $out->addMetadataLink( array(
 272                                         'title' => 'Dublin Core',
 273                                         'type' => 'application/rdf+xml',
 274                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 275                                 );
 276                         }
 277                 }
 278                 $copyright = '';
 279                 if ( $wgRightsPage ) {
 280                         $copy = Title::newFromText( $wgRightsPage );
 281
 282                         if ( $copy ) {
 283                                 $copyright = $copy->getLocalURL();
 284                         }
 285                 }
 286
 287                 if ( !$copyright && $wgRightsUrl ) {
 288                         $copyright = $wgRightsUrl;
 289                 }
 290
 291                 if ( $copyright ) {
 292                         $out->addLink( array(
 293                                 'rel' => 'copyright',
 294                                 'href' => $copyright )
 295                         );
 296                 }
 297         }
 298
 299         /**
 300          * Set some local variables
 301          */
 302         protected function setMembers() {
 303                 global $wgUser;
 304                 $this->mUser = $wgUser;
 305                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 306                 $this->usercss = false;
 307         }
 308
 309         /**
 310          * Set the title
 311          * @param $t Title object to use
 312          */
 313         public function setTitle( $t ) {
 314                 $this->mTitle = $t;
 315         }
 316
 317         /** Get the title */
 318         public function getTitle() {
 319                 return $this->mTitle;
 320         }
 321
 322         /**
 323          * Outputs the HTML generated by other functions.
 324          * @param $out Object: instance of OutputPage
 325          */
 326         function outputPage( OutputPage $out ) {
 327                 global $wgDebugComments;
 328                 wfProfileIn( __METHOD__ );
 329
 330                 $this->setMembers();
 331                 $this->initPage( $out );
 332
 333                 // See self::afterContentHook() for documentation
 334                 $afterContent = $this->afterContentHook();
 335
 336                 $out->out( $out->headElement( $this ) );
 337
 338                 if ( $wgDebugComments ) {
 339                         $out->out( "<!-- Wiki debugging output:\n" .
 340                           $out->mDebugtext . "-->\n" );
 341                 }
 342
 343                 $out->out( $this->beforeContent() );
 344
 345                 $out->out( $out->mBodytext . "\n" );
 346
 347                 $out->out( $this->afterContent() );
 348
 349                 $out->out( $afterContent );
 350
 351                 $out->out( $this->bottomScripts( $out ) );
 352
 353                 $out->out( wfReportTime() );
 354
 355                 $out->out( "\n</body></html>" );
 356                 wfProfileOut( __METHOD__ );
 357         }
 358
 359         static function makeVariablesScript( $data ) {
 360                 if ( $data ) {
 361                         return Html::inlineScript( 'mediaWiki.config.set(' . FormatJson::encode( $data ) . ');' );
 362                 } else {
 363                         return '';
 364                 }
 365         }
 366
 367         /**
 368          * Make a <script> tag containing global variables
 369          * @param $skinName string Name of the skin
 370          * The odd calling convention is for backwards compatibility
 371          * @todo FIXME: Make this not depend on $wgTitle!
 372          *
 373          * Do not add things here which can be evaluated in ResourceLoaderStartupScript - in other words, without state.
 374          * You will only be adding bloat to the page and causing page caches to have to be purged on configuration changes.
 375          */
 376         static function makeGlobalVariablesScript( $skinName ) {
 377                 global $wgTitle, $wgUser, $wgRequest, $wgArticle, $wgOut, $wgRestrictionTypes, $wgUseAjax, $wgEnableMWSuggest;
 378
 379                 $ns = $wgTitle->getNamespace();
 380                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 381                 $vars = array(
 382                         'wgCanonicalNamespace' => $nsname,
 383                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 384                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 385                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 386                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 387                         'wgTitle' => $wgTitle->getText(),
 388                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 389                         'wgArticleId' => $wgTitle->getArticleId(),
 390                         'wgIsArticle' => $wgOut->isArticle(),
 391                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 392                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 393                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 394                         'wgCategories' => $wgOut->getCategories(),
 395                 );
 396                 foreach ( $wgRestrictionTypes as $type ) {
 397                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 398                 }
 399                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 400                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 401                 }
 402
 403                 // Allow extensions to add their custom variables to the global JS variables
 404                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 405
 406                 return self::makeVariablesScript( $vars );
 407         }
 408
 409         /**
 410          * To make it harder for someone to slip a user a fake
 411          * user-JavaScript or user-CSS preview, a random token
 412          * is associated with the login session. If it's not
 413          * passed back with the preview request, we won't render
 414          * the code.
 415          *
 416          * @param $action String: 'edit', 'submit' etc.
 417          * @return bool
 418          */
 419         public function userCanPreview( $action ) {
 420                 global $wgRequest, $wgUser;
 421
 422                 if ( $action != 'submit' ) {
 423                         return false;
 424                 }
 425                 if ( !$wgRequest->wasPosted() ) {
 426                         return false;
 427                 }
 428                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 429                         return false;
 430                 }
 431                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 432                         return false;
 433                 }
 434
 435                 return $wgUser->matchEditToken(
 436                         $wgRequest->getVal( 'wpEditToken' ) );
 437         }
 438
 439         /**
 440          * Generated JavaScript action=raw&gen=js
 441          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 442          * nated together.  For some bizarre reason, it does *not* return any
 443          * custom user JS from subpages.  Huh?
 444          *
 445          * There's absolutely no reason to have separate Monobook/Common JSes.
 446          * Any JS that cares can just check the skin variable generated at the
 447          * top.  For now Monobook.js will be maintained, but it should be consi-
 448          * dered deprecated.
 449          *
 450          * @param $skinName String: If set, overrides the skin name
 451          * @return string
 452          */
 453         public function generateUserJs( $skinName = null ) {
 454
 455                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 456
 457                 return '';
 458         }
 459
 460         /**
 461          * Generate user stylesheet for action=raw&gen=css
 462          */
 463         public function generateUserStylesheet() {
 464
 465                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 466
 467                 return '';
 468         }
 469
 470         /**
 471          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 472          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 473          */
 474         protected function reallyGenerateUserStylesheet() {
 475
 476                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 477
 478                 return '';
 479         }
 480
 481         /**
 482          * @private
 483          */
 484         function setupUserCss( OutputPage $out ) {
 485                 global $wgRequest;
 486                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs, $wgSquidMaxage;
 487
 488                 wfProfileIn( __METHOD__ );
 489
 490                 $this->setupSkinUserCss( $out );
 491
 492                 $siteargs = array(
 493                         'action' => 'raw',
 494                         'maxage' => $wgSquidMaxage,
 495                 );
 496
 497                 // Add any extension CSS
 498                 foreach ( $out->getExtStyle() as $url ) {
 499                         $out->addStyle( $url );
 500                 }
 501
 502                 // Per-site custom styles
 503                 if ( $wgUseSiteCss ) {
 504                         $out->addModuleStyles( 'site' );
 505                 }
 506
 507                 // Per-user custom styles
 508                 if ( $wgAllowUserCss ) {
 509                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 510                                 // @FIXME: properly escape the cdata!
 511                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 512                         } else {
 513                                 $out->addModuleStyles( 'user' );
 514                         }
 515                 }
 516
 517                 // Per-user preference styles
 518                 if ( $wgAllowUserCssPrefs ) {
 519                         $out->addModuleStyles( 'user.options' );
 520                 }
 521
 522                 wfProfileOut( __METHOD__ );
 523         }
 524
 525         /**
 526          * Get the query to generate a dynamic stylesheet
 527          *
 528          * @return array
 529          */
 530         public static function getDynamicStylesheetQuery() {
 531                 global $wgSquidMaxage;
 532
 533                 return array(
 534                                 'action' => 'raw',
 535                                 'maxage' => $wgSquidMaxage,
 536                                 'usemsgcache' => 'yes',
 537                                 'ctype' => 'text/css',
 538                                 'smaxage' => $wgSquidMaxage,
 539                         );
 540         }
 541
 542         /**
 543          * Add skin specific stylesheets
 544          * @param $out OutputPage
 545          */
 546         function setupSkinUserCss( OutputPage $out ) {
 547                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 548                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 549                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 550                 $out->addStyle( $this->getStylesheet() );
 551                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 552         }
 553
 554         function getPageClasses( $title ) {
 555                 $numeric = 'ns-' . $title->getNamespace();
 556
 557                 if ( $title->getNamespace() == NS_SPECIAL ) {
 558                         $type = 'ns-special';
 559                 } elseif ( $title->isTalkPage() ) {
 560                         $type = 'ns-talk';
 561                 } else {
 562                         $type = 'ns-subject';
 563                 }
 564
 565                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 566
 567                 return "$numeric $type $name";
 568         }
 569
 570         /**
 571          * URL to the logo
 572          */
 573         function getLogo() {
 574                 global $wgLogo;
 575                 return $wgLogo;
 576         }
 577
 578         /**
 579          * This will be called immediately after the <body> tag.  Split into
 580          * two functions to make it easier to subclass.
 581          */
 582         function beforeContent() {
 583                 return $this->doBeforeContent();
 584         }
 585
 586         function doBeforeContent() {
 587                 global $wgContLang;
 588                 wfProfileIn( __METHOD__ );
 589
 590                 $s = '';
 591                 $qb = $this->qbSetting();
 592
 593                 $langlinks = $this->otherLanguages();
 594                 if ( $langlinks ) {
 595                         $rows = 2;
 596                         $borderhack = '';
 597                 } else {
 598                         $rows = 1;
 599                         $langlinks = false;
 600                         $borderhack = 'class="top"';
 601                 }
 602
 603                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 604                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 605
 606                 $shove = ( $qb != 0 );
 607                 $left = ( $qb == 1 || $qb == 3 );
 608
 609                 if ( $wgContLang->isRTL() ) {
 610                         $left = !$left;
 611                 }
 612
 613                 if ( !$shove ) {
 614                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 615                                 $this->logoText() . '</td>';
 616                 } elseif ( $left ) {
 617                         $s .= $this->getQuickbarCompensator( $rows );
 618                 }
 619
 620                 $l = $wgContLang->alignStart();
 621                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 622
 623                 $s .= $this->topLinks();
 624                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 625
 626                 $r = $wgContLang->alignEnd();
 627                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 628                 $s .= $this->nameAndLogin();
 629                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 630
 631                 if ( $langlinks ) {
 632                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 633                 }
 634
 635                 if ( $shove && !$left ) { # Right
 636                         $s .= $this->getQuickbarCompensator( $rows );
 637                 }
 638
 639                 $s .= "</tr>\n</table>\n</div>\n";
 640                 $s .= "\n<div id='article'>\n";
 641
 642                 $notice = wfGetSiteNotice();
 643
 644                 if ( $notice ) {
 645                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 646                 }
 647                 $s .= $this->pageTitle();
 648                 $s .= $this->pageSubtitle();
 649                 $s .= $this->getCategories();
 650
 651                 wfProfileOut( __METHOD__ );
 652                 return $s;
 653         }
 654
 655         function getCategoryLinks() {
 656                 global $wgOut, $wgUseCategoryBrowser;
 657                 global $wgContLang, $wgUser;
 658
 659                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 660                         return '';
 661                 }
 662
 663                 # Separator
 664                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 665
 666                 // Use Unicode bidi embedding override characters,
 667                 // to make sure links don't smash each other up in ugly ways.
 668                 $dir = $wgContLang->getDir();
 669                 $embed = "<span dir='$dir'>";
 670                 $pop = '</span>';
 671
 672                 $allCats = $wgOut->getCategoryLinks();
 673                 $s = '';
 674                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 675
 676                 if ( !empty( $allCats['normal'] ) ) {
 677                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 678
 679                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 680                         $s .= '<div id="mw-normal-catlinks">' .
 681                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 682                                 . $colon . $t . '</div>';
 683                 }
 684
 685                 # Hidden categories
 686                 if ( isset( $allCats['hidden'] ) ) {
 687                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 688                                 $class = 'mw-hidden-cats-user-shown';
 689                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 690                                 $class = 'mw-hidden-cats-ns-shown';
 691                         } else {
 692                                 $class = 'mw-hidden-cats-hidden';
 693                         }
 694
 695                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 696                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 697                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 698                                 '</div>';
 699                 }
 700
 701                 # optional 'dmoz-like' category browser. Will be shown under the list
 702                 # of categories an article belong to
 703                 if ( $wgUseCategoryBrowser ) {
 704                         $s .= '<br /><hr />';
 705
 706                         # get a big array of the parents tree
 707                         $parenttree = $this->mTitle->getParentCategoryTree();
 708                         # Skin object passed by reference cause it can not be
 709                         # accessed under the method subfunction drawCategoryBrowser
 710                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 711                         # Clean out bogus first entry and sort them
 712                         unset( $tempout[0] );
 713                         asort( $tempout );
 714                         # Output one per line
 715                         $s .= implode( "<br />\n", $tempout );
 716                 }
 717
 718                 return $s;
 719         }
 720
 721         /**
 722          * Render the array as a serie of links.
 723          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 724          * @param &skin Object: skin passed by reference
 725          * @return String separated by &gt;, terminate with "\n"
 726          */
 727         function drawCategoryBrowser( $tree, &$skin ) {
 728                 $return = '';
 729
 730                 foreach ( $tree as $element => $parent ) {
 731                         if ( empty( $parent ) ) {
 732                                 # element start a new list
 733                                 $return .= "\n";
 734                         } else {
 735                                 # grab the others elements
 736                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 737                         }
 738
 739                         # add our current element to the list
 740                         $eltitle = Title::newFromText( $element );
 741                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 742                 }
 743
 744                 return $return;
 745         }
 746
 747         function getCategories() {
 748                 $catlinks = $this->getCategoryLinks();
 749
 750                 $classes = 'catlinks';
 751
 752                 global $wgOut, $wgUser;
 753
 754                 // Check what we're showing
 755                 $allCats = $wgOut->getCategoryLinks();
 756                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 757                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 758
 759                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 760                         $classes .= ' catlinks-allhidden';
 761                 }
 762
 763                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 764         }
 765
 766         function getQuickbarCompensator( $rows = 1 ) {
 767                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 768         }
 769
 770         /**
 771          * This runs a hook to allow extensions placing their stuff after content
 772          * and article metadata (e.g. categories).
 773          * Note: This function has nothing to do with afterContent().
 774          *
 775          * This hook is placed here in order to allow using the same hook for all
 776          * skins, both the SkinTemplate based ones and the older ones, which directly
 777          * use this class to get their data.
 778          *
 779          * The output of this function gets processed in SkinTemplate::outputPage() for
 780          * the SkinTemplate based skins, all other skins should directly echo it.
 781          *
 782          * Returns an empty string by default, if not changed by any hook function.
 783          */
 784         protected function afterContentHook() {
 785                 $data = '';
 786
 787                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 788                         // adding just some spaces shouldn't toggle the output
 789                         // of the whole <div/>, so we use trim() here
 790                         if ( trim( $data ) != '' ) {
 791                                 // Doing this here instead of in the skins to
 792                                 // ensure that the div has the same ID in all
 793                                 // skins
 794                                 $data = "<div id='mw-data-after-content'>\n" .
 795                                         "\t$data\n" .
 796                                         "</div>\n";
 797                         }
 798                 } else {
 799                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 800                 }
 801
 802                 return $data;
 803         }
 804
 805         /**
 806          * Generate debug data HTML for displaying at the bottom of the main content
 807          * area.
 808          * @return String HTML containing debug data, if enabled (otherwise empty).
 809          */
 810         protected function generateDebugHTML() {
 811                 global $wgShowDebug, $wgOut;
 812
 813                 if ( $wgShowDebug ) {
 814                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 815                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 816                                 $listInternals . "</ul>\n";
 817                 }
 818
 819                 return '';
 820         }
 821
 822         private function formatDebugHTML( $debugText ) {
 823                 $lines = explode( "\n", $debugText );
 824                 $curIdent = 0;
 825                 $ret = '<li>';
 826
 827                 foreach ( $lines as $line ) {
 828                         $m = array();
 829                         $display = ltrim( $line );
 830                         $ident = strlen( $line ) - strlen( $display );
 831                         $diff = $ident - $curIdent;
 832
 833                         if ( $display == '' ) {
 834                                 $display = "\xc2\xa0";
 835                         }
 836
 837                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 838                                 $ident = $curIdent;
 839                                 $diff = 0;
 840                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 841                         } else {
 842                                 $display = htmlspecialchars( $display );
 843                         }
 844
 845                         if ( $diff < 0 ) {
 846                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 847                         } elseif ( $diff == 0 ) {
 848                                 $ret .= "</li><li>\n";
 849                         } else {
 850                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 851                         }
 852                         $ret .= $display . "\n";
 853
 854                         $curIdent = $ident;
 855                 }
 856
 857                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 858
 859                 return $ret;
 860         }
 861
 862         /**
 863          * This gets called shortly before the </body> tag.
 864          * @return String HTML to be put before </body>
 865          */
 866         function afterContent() {
 867                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 868                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 869         }
 870
 871         /**
 872          * This gets called shortly before the </body> tag.
 873          * @param $out OutputPage object
 874          * @return String HTML-wrapped JS code to be put before </body>
 875          */
 876         function bottomScripts( $out ) {
 877                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 878                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 879
 880                 return $bottomScriptText;
 881         }
 882
 883         /** @return string Retrievied from HTML text */
 884         function printSource() {
 885                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 886                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 887         }
 888
 889         function printFooter() {
 890                 return "<p>" .  $this->printSource() .
 891                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 892         }
 893
 894         /** overloaded by derived classes */
 895         function doAfterContent() {
 896                 return '</div></div>';
 897         }
 898
 899         function pageTitleLinks() {
 900                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 901
 902                 $oldid = $wgRequest->getVal( 'oldid' );
 903                 $diff = $wgRequest->getVal( 'diff' );
 904                 $action = $wgRequest->getText( 'action' );
 905
 906                 $s[] = $this->printableLink();
 907                 $disclaimer = $this->disclaimerLink(); # may be empty
 908
 909                 if ( $disclaimer ) {
 910                         $s[] = $disclaimer;
 911                 }
 912
 913                 $privacy = $this->privacyLink(); # may be empty too
 914
 915                 if ( $privacy ) {
 916                         $s[] = $privacy;
 917                 }
 918
 919                 if ( $wgOut->isArticleRelated() ) {
 920                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
 921                                 $name = $this->mTitle->getDBkey();
 922                                 $image = wfFindFile( $this->mTitle );
 923
 924                                 if ( $image ) {
 925                                         $link = htmlspecialchars( $image->getURL() );
 926                                         $style = $this->getInternalLinkAttributes( $link, $name );
 927                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 928                                 }
 929                         }
 930                 }
 931
 932                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 933                         $s[] .= $this->link(
 934                                         $this->mTitle,
 935                                         wfMsg( 'currentrev' ),
 936                                         array(),
 937                                         array(),
 938                                         array( 'known', 'noclasses' )
 939                         );
 940                 }
 941
 942                 if ( $wgUser->getNewtalk() ) {
 943                         # do not show "You have new messages" text when we are viewing our
 944                         # own talk page
 945                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
 946                                 $tl = $this->link(
 947                                         $wgUser->getTalkPage(),
 948                                         wfMsgHtml( 'newmessageslink' ),
 949                                         array(),
 950                                         array( 'redirect' => 'no' ),
 951                                         array( 'known', 'noclasses' )
 952                                 );
 953
 954                                 $dl = $this->link(
 955                                         $wgUser->getTalkPage(),
 956                                         wfMsgHtml( 'newmessagesdifflink' ),
 957                                         array(),
 958                                         array( 'diff' => 'cur' ),
 959                                         array( 'known', 'noclasses' )
 960                                 );
 961                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 962                                 # disable caching
 963                                 $wgOut->setSquidMaxage( 0 );
 964                                 $wgOut->enableClientCache( false );
 965                         }
 966                 }
 967
 968                 $undelete = $this->getUndeleteLink();
 969
 970                 if ( !empty( $undelete ) ) {
 971                         $s[] = $undelete;
 972                 }
 973
 974                 return $wgLang->pipeList( $s );
 975         }
 976
 977         function getUndeleteLink() {
 978                 global $wgUser, $wgLang, $wgRequest;
 979
 980                 $action = $wgRequest->getVal( 'action', 'view' );
 981
 982                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
 983                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
 984                         $n = $this->mTitle->isDeleted();
 985
 986                         if ( $n ) {
 987                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
 988                                         $msg = 'thisisdeleted';
 989                                 } else {
 990                                         $msg = 'viewdeleted';
 991                                 }
 992
 993                                 return wfMsg(
 994                                         $msg,
 995                                         $this->link(
 996                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
 997                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
 998                                                 array(),
 999                                                 array(),
1000                                                 array( 'known', 'noclasses' )
1001                                         )
1002                                 );
1003                         }
1004                 }
1005
1006                 return '';
1007         }
1008
1009         function printableLink() {
1010                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1011
1012                 $s = array();
1013
1014                 if ( !$wgOut->isPrintable() ) {
1015                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1016                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1017                 }
1018
1019                 if ( $wgOut->isSyndicated() ) {
1020                         foreach ( $wgFeedClasses as $format => $class ) {
1021                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1022                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1023                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1024                         }
1025                 }
1026                 return $wgLang->pipeList( $s );
1027         }
1028
1029         /**
1030          * Gets the h1 element with the page title.
1031          * @return string
1032          */
1033         function pageTitle() {
1034                 global $wgOut;
1035                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1036                 return $s;
1037         }
1038
1039         function pageSubtitle() {
1040                 global $wgOut;
1041
1042                 $sub = $wgOut->getSubtitle();
1043
1044                 if ( $sub == '' ) {
1045                         global $wgExtraSubtitle;
1046                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1047                 }
1048
1049                 $subpages = $this->subPageSubtitle();
1050                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1051                 $s = "<p class='subtitle'>{$sub}</p>\n";
1052
1053                 return $s;
1054         }
1055
1056         function subPageSubtitle() {
1057                 $subpages = '';
1058
1059                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1060                         return $subpages;
1061                 }
1062
1063                 global $wgOut;
1064
1065                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1066                         $ptext = $this->mTitle->getPrefixedText();
1067                         if ( preg_match( '/\//', $ptext ) ) {
1068                                 $links = explode( '/', $ptext );
1069                                 array_pop( $links );
1070                                 $c = 0;
1071                                 $growinglink = '';
1072                                 $display = '';
1073
1074                                 foreach ( $links as $link ) {
1075                                         $growinglink .= $link;
1076                                         $display .= $link;
1077                                         $linkObj = Title::newFromText( $growinglink );
1078
1079                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1080                                                 $getlink = $this->link(
1081                                                         $linkObj,
1082                                                         htmlspecialchars( $display ),
1083                                                         array(),
1084                                                         array(),
1085                                                         array( 'known', 'noclasses' )
1086                                                 );
1087
1088                                                 $c++;
1089
1090                                                 if ( $c > 1 ) {
1091                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1092                                                 } else  {
1093                                                         $subpages .= '&lt; ';
1094                                                 }
1095
1096                                                 $subpages .= $getlink;
1097                                                 $display = '';
1098                                         } else {
1099                                                 $display .= '/';
1100                                         }
1101                                         $growinglink .= '/';
1102                                 }
1103                         }
1104                 }
1105
1106                 return $subpages;
1107         }
1108
1109         /**
1110          * Returns true if the IP should be shown in the header
1111          */
1112         function showIPinHeader() {
1113                 global $wgShowIPinHeader;
1114                 return $wgShowIPinHeader && session_id() != '';
1115         }
1116
1117         function nameAndLogin() {
1118                 global $wgUser, $wgLang, $wgContLang;
1119
1120                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1121
1122                 $ret = '';
1123
1124                 if ( $wgUser->isAnon() ) {
1125                         if ( $this->showIPinHeader() ) {
1126                                 $name = wfGetIP();
1127
1128                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1129                                         $wgLang->getNsText( NS_TALK ) );
1130
1131                                 $ret .= "$name ($talkLink)";
1132                         } else {
1133                                 $ret .= wfMsg( 'notloggedin' );
1134                         }
1135
1136                         $returnTo = $this->mTitle->getPrefixedDBkey();
1137                         $query = array();
1138
1139                         if ( $logoutPage != $returnTo ) {
1140                                 $query['returnto'] = $returnTo;
1141                         }
1142
1143                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1144                                 ? 'nav-login-createaccount'
1145                                 : 'login';
1146                         $ret .= "\n<br />" . $this->link(
1147                                 SpecialPage::getTitleFor( 'Userlogin' ),
1148                                 wfMsg( $loginlink ), array(), $query
1149                         );
1150                 } else {
1151                         $returnTo = $this->mTitle->getPrefixedDBkey();
1152                         $talkLink = $this->link( $wgUser->getTalkPage(),
1153                                 $wgLang->getNsText( NS_TALK ) );
1154
1155                         $ret .= $this->link( $wgUser->getUserPage(),
1156                                 htmlspecialchars( $wgUser->getName() ) );
1157                         $ret .= " ($talkLink)<br />";
1158                         $ret .= $wgLang->pipeList( array(
1159                                 $this->link(
1160                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1161                                         array(), array( 'returnto' => $returnTo )
1162                                 ),
1163                                 $this->specialLink( 'Preferences' ),
1164                         ) );
1165                 }
1166
1167                 $ret = $wgLang->pipeList( array(
1168                         $ret,
1169                         $this->link(
1170                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1171                                 wfMsg( 'help' )
1172                         ),
1173                 ) );
1174
1175                 return $ret;
1176         }
1177
1178         function getSearchLink() {
1179                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1180                 return $searchPage->getLocalURL();
1181         }
1182
1183         function escapeSearchLink() {
1184                 return htmlspecialchars( $this->getSearchLink() );
1185         }
1186
1187         function searchForm() {
1188                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1189
1190                 $search = $wgRequest->getText( 'search' );
1191
1192                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1193                   . $this->escapeSearchLink() . "\">\n"
1194                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1195                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1196                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1197
1198                 if ( $wgUseTwoButtonsSearchForm ) {
1199                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1200                 } else {
1201                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1202                 }
1203
1204                 $s .= '</form>';
1205
1206                 // Ensure unique id's for search boxes made after the first
1207                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1208
1209                 return $s;
1210         }
1211
1212         function topLinks() {
1213                 global $wgOut;
1214
1215                 $s = array(
1216                         $this->mainPageLink(),
1217                         $this->specialLink( 'Recentchanges' )
1218                 );
1219
1220                 if ( $wgOut->isArticleRelated() ) {
1221                         $s[] = $this->editThisPage();
1222                         $s[] = $this->historyLink();
1223                 }
1224
1225                 # Many people don't like this dropdown box
1226                 # $s[] = $this->specialPagesList();
1227
1228                 if ( $this->variantLinks() ) {
1229                         $s[] = $this->variantLinks();
1230                 }
1231
1232                 if ( $this->extensionTabLinks() ) {
1233                         $s[] = $this->extensionTabLinks();
1234                 }
1235
1236                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1237                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1238         }
1239
1240         /**
1241          * Compatibility for extensions adding functionality through tabs.
1242          * Eventually these old skins should be replaced with SkinTemplate-based
1243          * versions, sigh...
1244          * @return string
1245          */
1246         function extensionTabLinks() {
1247                 $tabs = array();
1248                 $out = '';
1249                 $s = array();
1250                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1251                 foreach ( $tabs as $tab ) {
1252                         $s[] = Xml::element( 'a',
1253                                 array( 'href' => $tab['href'] ),
1254                                 $tab['text'] );
1255                 }
1256
1257                 if ( count( $s ) ) {
1258                         global $wgLang;
1259
1260                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1261                         $out .= $wgLang->pipeList( $s );
1262                 }
1263
1264                 return $out;
1265         }
1266
1267         /**
1268          * Language/charset variant links for classic-style skins
1269          * @return string
1270          */
1271         function variantLinks() {
1272                 $s = '';
1273
1274                 /* show links to different language variants */
1275                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1276
1277                 $variants = $wgContLang->getVariants();
1278
1279                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1280                         foreach ( $variants as $code ) {
1281                                 $varname = $wgContLang->getVariantname( $code );
1282
1283                                 if ( $varname == 'disable' ) {
1284                                         continue;
1285                                 }
1286                                 $s = $wgLang->pipeList( array(
1287                                         $s,
1288                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1289                                 ) );
1290                         }
1291                 }
1292
1293                 return $s;
1294         }
1295
1296         function bottomLinks() {
1297                 global $wgOut, $wgUser, $wgUseTrackbacks;
1298                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1299
1300                 $s = '';
1301                 if ( $wgOut->isArticleRelated() ) {
1302                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1303
1304                         if ( $wgUser->isLoggedIn() ) {
1305                                 $element[] = $this->watchThisPage();
1306                         }
1307
1308                         $element[] = $this->talkLink();
1309                         $element[] = $this->historyLink();
1310                         $element[] = $this->whatLinksHere();
1311                         $element[] = $this->watchPageLinksLink();
1312
1313                         if ( $wgUseTrackbacks ) {
1314                                 $element[] = $this->trackbackLink();
1315                         }
1316
1317                         if (
1318                                 $this->mTitle->getNamespace() == NS_USER ||
1319                                 $this->mTitle->getNamespace() == NS_USER_TALK
1320                         ) {
1321                                 $id = User::idFromName( $this->mTitle->getText() );
1322                                 $ip = User::isIP( $this->mTitle->getText() );
1323
1324                                 # Both anons and non-anons have contributions list
1325                                 if ( $id || $ip ) {
1326                                         $element[] = $this->userContribsLink();
1327                                 }
1328
1329                                 if ( $this->showEmailUser( $id ) ) {
1330                                         $element[] = $this->emailUserLink();
1331                                 }
1332                         }
1333
1334                         $s = implode( $element, $sep );
1335
1336                         if ( $this->mTitle->getArticleId() ) {
1337                                 $s .= "\n<br />";
1338
1339                                 // Delete/protect/move links for privileged users
1340                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1341                                         $s .= $this->deleteThisPage();
1342                                 }
1343
1344                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1345                                         $s .= $sep . $this->protectThisPage();
1346                                 }
1347
1348                                 if ( $wgUser->isAllowed( 'move' ) ) {
1349                                         $s .= $sep . $this->moveThisPage();
1350                                 }
1351                         }
1352
1353                         $s .= "<br />\n" . $this->otherLanguages();
1354                 }
1355
1356                 return $s;
1357         }
1358
1359         function pageStats() {
1360                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1361                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1362
1363                 $oldid = $wgRequest->getVal( 'oldid' );
1364                 $diff = $wgRequest->getVal( 'diff' );
1365
1366                 if ( !$wgOut->isArticle() ) {
1367                         return '';
1368                 }
1369
1370                 if ( !$wgArticle instanceof Article ) {
1371                         return '';
1372                 }
1373
1374                 if ( isset( $oldid ) || isset( $diff ) ) {
1375                         return '';
1376                 }
1377
1378                 if ( 0 == $wgArticle->getID() ) {
1379                         return '';
1380                 }
1381
1382                 $s = '';
1383
1384                 if ( !$wgDisableCounters ) {
1385                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1386
1387                         if ( $count ) {
1388                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1389                         }
1390                 }
1391
1392                 if ( $wgMaxCredits != 0 ) {
1393                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1394                 } else {
1395                         $s .= $this->lastModified();
1396                 }
1397
1398                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1399                         $dbr = wfGetDB( DB_SLAVE );
1400                         $res = $dbr->select(
1401                                 'watchlist',
1402                                 array( 'COUNT(*) AS n' ),
1403                                 array(
1404                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1405                                         'wl_namespace' => $this->mTitle->getNamespace()
1406                                 ),
1407                                 __METHOD__
1408                         );
1409                         $x = $dbr->fetchObject( $res );
1410
1411                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1412                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1413                         );
1414                 }
1415
1416                 return $s . ' ' .  $this->getCopyright();
1417         }
1418
1419         function getCopyright( $type = 'detect' ) {
1420                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1421
1422                 if ( $type == 'detect' ) {
1423                         $diff = $wgRequest->getVal( 'diff' );
1424                         $isCur = $wgArticle && $wgArticle->isCurrent();
1425
1426                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1427                                 $type = 'history';
1428                         } else {
1429                                 $type = 'normal';
1430                         }
1431                 }
1432
1433                 if ( $type == 'history' ) {
1434                         $msg = 'history_copyright';
1435                 } else {
1436                         $msg = 'copyright';
1437                 }
1438
1439                 $out = '';
1440
1441                 if ( $wgRightsPage ) {
1442                         $title = Title::newFromText( $wgRightsPage );
1443                         $link = $this->linkKnown( $title, $wgRightsText );
1444                 } elseif ( $wgRightsUrl ) {
1445                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1446                 } elseif ( $wgRightsText ) {
1447                         $link = $wgRightsText;
1448                 } else {
1449                         # Give up now
1450                         return $out;
1451                 }
1452
1453                 // Allow for site and per-namespace customization of copyright notice.
1454                 $forContent = true;
1455
1456                 if ( isset( $wgArticle ) ) {
1457                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1458                 }
1459
1460                 if ( $forContent ) {
1461                         $out .= wfMsgForContent( $msg, $link );
1462                 } else {
1463                         $out .= wfMsg( $msg, $link );
1464                 }
1465
1466                 return $out;
1467         }
1468
1469         function getCopyrightIcon() {
1470                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1471
1472                 $out = '';
1473
1474                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1475                         $out = $wgCopyrightIcon;
1476                 } elseif ( $wgRightsIcon ) {
1477                         $icon = htmlspecialchars( $wgRightsIcon );
1478
1479                         if ( $wgRightsUrl ) {
1480                                 $url = htmlspecialchars( $wgRightsUrl );
1481                                 $out .= '<a href="' . $url . '">';
1482                         }
1483
1484                         $text = htmlspecialchars( $wgRightsText );
1485                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1486
1487                         if ( $wgRightsUrl ) {
1488                                 $out .= '</a>';
1489                         }
1490                 }
1491
1492                 return $out;
1493         }
1494
1495         /**
1496          * Gets the powered by MediaWiki icon.
1497          * @return string
1498          */
1499         function getPoweredBy() {
1500                 global $wgStylePath;
1501
1502                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1503                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1504
1505                 return $img;
1506         }
1507
1508         function lastModified() {
1509                 global $wgLang, $wgArticle;
1510
1511                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1512                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1513                 } else {
1514                         $timestamp = $wgArticle->getTimestamp();
1515                 }
1516
1517                 if ( $timestamp ) {
1518                         $d = $wgLang->date( $timestamp, true );
1519                         $t = $wgLang->time( $timestamp, true );
1520                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1521                 } else {
1522                         $s = '';
1523                 }
1524
1525                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1526                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1527                 }
1528
1529                 return $s;
1530         }
1531
1532         function logoText( $align = '' ) {
1533                 if ( $align != '' ) {
1534                         $a = " align='{$align}'";
1535                 } else {
1536                         $a = '';
1537                 }
1538
1539                 $mp = wfMsg( 'mainpage' );
1540                 $mptitle = Title::newMainPage();
1541                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1542
1543                 $logourl = $this->getLogo();
1544                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1545
1546                 return $s;
1547         }
1548
1549         /**
1550          * Show a drop-down box of special pages
1551          */
1552         function specialPagesList() {
1553                 global $wgContLang, $wgServer, $wgRedirectScript;
1554
1555                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1556
1557                 foreach ( $pages as $name => $page ) {
1558                         $pages[$name] = $page->getDescription();
1559                 }
1560
1561                 $go = wfMsg( 'go' );
1562                 $sp = wfMsg( 'specialpages' );
1563                 $spp = $wgContLang->specialPage( 'Specialpages' );
1564
1565                 $s = '<form id="specialpages" method="get" ' .
1566                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1567                 $s .= "<select name=\"wpDropdown\">\n";
1568                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1569
1570
1571                 foreach ( $pages as $name => $desc ) {
1572                         $p = $wgContLang->specialPage( $name );
1573                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1574                 }
1575
1576                 $s .= "</select>\n";
1577                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1578                 $s .= "</form>\n";
1579
1580                 return $s;
1581         }
1582
1583         /**
1584          * Gets the link to the wiki's main page.
1585          * @return string
1586          */
1587         function mainPageLink() {
1588                 $s = $this->link(
1589                         Title::newMainPage(),
1590                         wfMsg( 'mainpage' ),
1591                         array(),
1592                         array(),
1593                         array( 'known', 'noclasses' )
1594                 );
1595
1596                 return $s;
1597         }
1598
1599         private function footerLink( $desc, $page ) {
1600                 // if the link description has been set to "-" in the default language,
1601                 if ( wfMsgForContent( $desc )  == '-' ) {
1602                         // then it is disabled, for all languages.
1603                         return '';
1604                 } else {
1605                         // Otherwise, we display the link for the user, described in their
1606                         // language (which may or may not be the same as the default language),
1607                         // but we make the link target be the one site-wide page.
1608                         $title = Title::newFromText( wfMsgForContent( $page ) );
1609
1610                         return $this->linkKnown(
1611                                 $title,
1612                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1613                         );
1614                 }
1615         }
1616
1617         /**
1618          * Gets the link to the wiki's privacy policy page.
1619          */
1620         function privacyLink() {
1621                 return $this->footerLink( 'privacy', 'privacypage' );
1622         }
1623
1624         /**
1625          * Gets the link to the wiki's about page.
1626          */
1627         function aboutLink() {
1628                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1629         }
1630
1631         /**
1632          * Gets the link to the wiki's general disclaimers page.
1633          */
1634         function disclaimerLink() {
1635                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1636         }
1637
1638         function editThisPage() {
1639                 global $wgOut;
1640
1641                 if ( !$wgOut->isArticleRelated() ) {
1642                         $s = wfMsg( 'protectedpage' );
1643                 } else {
1644                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1645                                 $t = wfMsg( 'editthispage' );
1646                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1647                                 $t = wfMsg( 'create-this-page' );
1648                         } else {
1649                                 $t = wfMsg( 'viewsource' );
1650                         }
1651
1652                         $s = $this->link(
1653                                 $this->mTitle,
1654                                 $t,
1655                                 array(),
1656                                 $this->editUrlOptions(),
1657                                 array( 'known', 'noclasses' )
1658                         );
1659                 }
1660
1661                 return $s;
1662         }
1663
1664         /**
1665          * Return URL options for the 'edit page' link.
1666          * This may include an 'oldid' specifier, if the current page view is such.
1667          *
1668          * @return array
1669          * @private
1670          */
1671         function editUrlOptions() {
1672                 global $wgArticle;
1673
1674                 $options = array( 'action' => 'edit' );
1675
1676                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1677                         $options['oldid'] = intval( $this->mRevisionId );
1678                 }
1679
1680                 return $options;
1681         }
1682
1683         function deleteThisPage() {
1684                 global $wgUser, $wgRequest;
1685
1686                 $diff = $wgRequest->getVal( 'diff' );
1687
1688                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1689                         $t = wfMsg( 'deletethispage' );
1690
1691                         $s = $this->link(
1692                                 $this->mTitle,
1693                                 $t,
1694                                 array(),
1695                                 array( 'action' => 'delete' ),
1696                                 array( 'known', 'noclasses' )
1697                         );
1698                 } else {
1699                         $s = '';
1700                 }
1701
1702                 return $s;
1703         }
1704
1705         function protectThisPage() {
1706                 global $wgUser, $wgRequest;
1707
1708                 $diff = $wgRequest->getVal( 'diff' );
1709
1710                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1711                         if ( $this->mTitle->isProtected() ) {
1712                                 $text = wfMsg( 'unprotectthispage' );
1713                                 $query = array( 'action' => 'unprotect' );
1714                         } else {
1715                                 $text = wfMsg( 'protectthispage' );
1716                                 $query = array( 'action' => 'protect' );
1717                         }
1718
1719                         $s = $this->link(
1720                                 $this->mTitle,
1721                                 $text,
1722                                 array(),
1723                                 $query,
1724                                 array( 'known', 'noclasses' )
1725                         );
1726                 } else {
1727                         $s = '';
1728                 }
1729
1730                 return $s;
1731         }
1732
1733         function watchThisPage() {
1734                 global $wgOut;
1735                 ++$this->mWatchLinkNum;
1736
1737                 if ( $wgOut->isArticleRelated() ) {
1738                         if ( $this->mTitle->userIsWatching() ) {
1739                                 $text = wfMsg( 'unwatchthispage' );
1740                                 $query = array( 'action' => 'unwatch' );
1741                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1742                         } else {
1743                                 $text = wfMsg( 'watchthispage' );
1744                                 $query = array( 'action' => 'watch' );
1745                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1746                         }
1747
1748                         $s = $this->link(
1749                                 $this->mTitle,
1750                                 $text,
1751                                 array( 'id' => $id ),
1752                                 $query,
1753                                 array( 'known', 'noclasses' )
1754                         );
1755                 } else {
1756                         $s = wfMsg( 'notanarticle' );
1757                 }
1758
1759                 return $s;
1760         }
1761
1762         function moveThisPage() {
1763                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1764                         return $this->link(
1765                                 SpecialPage::getTitleFor( 'Movepage' ),
1766                                 wfMsg( 'movethispage' ),
1767                                 array(),
1768                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1769                                 array( 'known', 'noclasses' )
1770                         );
1771                 } else {
1772                         // no message if page is protected - would be redundant
1773                         return '';
1774                 }
1775         }
1776
1777         function historyLink() {
1778                 return $this->link(
1779                         $this->mTitle,
1780                         wfMsgHtml( 'history' ),
1781                         array( 'rel' => 'archives' ),
1782                         array( 'action' => 'history' )
1783                 );
1784         }
1785
1786         function whatLinksHere() {
1787                 return $this->link(
1788                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1789                         wfMsgHtml( 'whatlinkshere' ),
1790                         array(),
1791                         array(),
1792                         array( 'known', 'noclasses' )
1793                 );
1794         }
1795
1796         function userContribsLink() {
1797                 return $this->link(
1798                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1799                         wfMsgHtml( 'contributions' ),
1800                         array(),
1801                         array(),
1802                         array( 'known', 'noclasses' )
1803                 );
1804         }
1805
1806         function showEmailUser( $id ) {
1807                 global $wgUser;
1808                 $targetUser = User::newFromId( $id );
1809                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1810                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1811         }
1812
1813         function emailUserLink() {
1814                 return $this->link(
1815                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1816                         wfMsg( 'emailuser' ),
1817                         array(),
1818                         array(),
1819                         array( 'known', 'noclasses' )
1820                 );
1821         }
1822
1823         function watchPageLinksLink() {
1824                 global $wgOut;
1825
1826                 if ( !$wgOut->isArticleRelated() ) {
1827                         return '(' . wfMsg( 'notanarticle' ) . ')';
1828                 } else {
1829                         return $this->link(
1830                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1831                                 wfMsg( 'recentchangeslinked-toolbox' ),
1832                                 array(),
1833                                 array(),
1834                                 array( 'known', 'noclasses' )
1835                         );
1836                 }
1837         }
1838
1839         function trackbackLink() {
1840                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1841                         . wfMsg( 'trackbacklink' ) . '</a>';
1842         }
1843
1844         function otherLanguages() {
1845                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1846
1847                 if ( $wgHideInterlanguageLinks ) {
1848                         return '';
1849                 }
1850
1851                 $a = $wgOut->getLanguageLinks();
1852
1853                 if ( 0 == count( $a ) ) {
1854                         return '';
1855                 }
1856
1857                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1858                 $first = true;
1859
1860                 if ( $wgContLang->isRTL() ) {
1861                         $s .= '<span dir="LTR">';
1862                 }
1863
1864                 foreach ( $a as $l ) {
1865                         if ( !$first ) {
1866                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1867                         }
1868
1869                         $first = false;
1870
1871                         $nt = Title::newFromText( $l );
1872                         $url = $nt->escapeFullURL();
1873                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1874                         $title = htmlspecialchars( $nt->getText() );
1875
1876                         if ( $text == '' ) {
1877                                 $text = $l;
1878                         }
1879
1880                         $style = $this->getExternalLinkAttributes();
1881                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1882                 }
1883
1884                 if ( $wgContLang->isRTL() ) {
1885                         $s .= '</span>';
1886                 }
1887
1888                 return $s;
1889         }
1890
1891         function talkLink() {
1892                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1893                         # No discussion links for special pages
1894                         return '';
1895                 }
1896
1897                 $linkOptions = array();
1898
1899                 if ( $this->mTitle->isTalkPage() ) {
1900                         $link = $this->mTitle->getSubjectPage();
1901                         switch( $link->getNamespace() ) {
1902                                 case NS_MAIN:
1903                                         $text = wfMsg( 'articlepage' );
1904                                         break;
1905                                 case NS_USER:
1906                                         $text = wfMsg( 'userpage' );
1907                                         break;
1908                                 case NS_PROJECT:
1909                                         $text = wfMsg( 'projectpage' );
1910                                         break;
1911                                 case NS_FILE:
1912                                         $text = wfMsg( 'imagepage' );
1913                                         # Make link known if image exists, even if the desc. page doesn't.
1914                                         if ( wfFindFile( $link ) )
1915                                                 $linkOptions[] = 'known';
1916                                         break;
1917                                 case NS_MEDIAWIKI:
1918                                         $text = wfMsg( 'mediawikipage' );
1919                                         break;
1920                                 case NS_TEMPLATE:
1921                                         $text = wfMsg( 'templatepage' );
1922                                         break;
1923                                 case NS_HELP:
1924                                         $text = wfMsg( 'viewhelppage' );
1925                                         break;
1926                                 case NS_CATEGORY:
1927                                         $text = wfMsg( 'categorypage' );
1928                                         break;
1929                                 default:
1930                                         $text = wfMsg( 'articlepage' );
1931                         }
1932                 } else {
1933                         $link = $this->mTitle->getTalkPage();
1934                         $text = wfMsg( 'talkpage' );
1935                 }
1936
1937                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1938
1939                 return $s;
1940         }
1941
1942         function commentLink() {
1943                 global $wgOut;
1944
1945                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1946                         return '';
1947                 }
1948
1949                 # __NEWSECTIONLINK___ changes behaviour here
1950                 # If it is present, the link points to this page, otherwise
1951                 # it points to the talk page
1952                 if ( $this->mTitle->isTalkPage() ) {
1953                         $title = $this->mTitle;
1954                 } elseif ( $wgOut->showNewSectionLink() ) {
1955                         $title = $this->mTitle;
1956                 } else {
1957                         $title = $this->mTitle->getTalkPage();
1958                 }
1959
1960                 return $this->link(
1961                         $title,
1962                         wfMsg( 'postcomment' ),
1963                         array(),
1964                         array(
1965                                 'action' => 'edit',
1966                                 'section' => 'new'
1967                         ),
1968                         array( 'known', 'noclasses' )
1969                 );
1970         }
1971
1972         function getUploadLink() {
1973                 global $wgUploadNavigationUrl;
1974
1975                 if ( $wgUploadNavigationUrl ) {
1976                         # Using an empty class attribute to avoid automatic setting of "external" class
1977                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
1978                 } else {
1979                         return $this->link(
1980                                 SpecialPage::getTitleFor( 'Upload' ),
1981                                 wfMsgHtml( 'upload' ),
1982                                 array(),
1983                                 array(),
1984                                 array( 'known', 'noclasses' )
1985                         );
1986                 }
1987         }
1988
1989         /* these are used extensively in SkinTemplate, but also some other places */
1990         static function makeMainPageUrl( $urlaction = '' ) {
1991                 $title = Title::newMainPage();
1992                 self::checkTitle( $title, '' );
1993
1994                 return $title->getLocalURL( $urlaction );
1995         }
1996
1997         static function makeSpecialUrl( $name, $urlaction = '' ) {
1998                 $title = SpecialPage::getTitleFor( $name );
1999                 return $title->getLocalURL( $urlaction );
2000         }
2001
2002         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2003                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2004                 return $title->getLocalURL( $urlaction );
2005         }
2006
2007         static function makeI18nUrl( $name, $urlaction = '' ) {
2008                 $title = Title::newFromText( wfMsgForContent( $name ) );
2009                 self::checkTitle( $title, $name );
2010                 return $title->getLocalURL( $urlaction );
2011         }
2012
2013         static function makeUrl( $name, $urlaction = '' ) {
2014                 $title = Title::newFromText( $name );
2015                 self::checkTitle( $title, $name );
2016
2017                 return $title->getLocalURL( $urlaction );
2018         }
2019
2020         /**
2021          * If url string starts with http, consider as external URL, else
2022          * internal
2023          */
2024         static function makeInternalOrExternalUrl( $name ) {
2025                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2026                         return $name;
2027                 } else {
2028                         return self::makeUrl( $name );
2029                 }
2030         }
2031
2032         # this can be passed the NS number as defined in Language.php
2033         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2034                 $title = Title::makeTitleSafe( $namespace, $name );
2035                 self::checkTitle( $title, $name );
2036
2037                 return $title->getLocalURL( $urlaction );
2038         }
2039
2040         /* these return an array with the 'href' and boolean 'exists' */
2041         static function makeUrlDetails( $name, $urlaction = '' ) {
2042                 $title = Title::newFromText( $name );
2043                 self::checkTitle( $title, $name );
2044
2045                 return array(
2046                         'href' => $title->getLocalURL( $urlaction ),
2047                         'exists' => $title->getArticleID() != 0 ? true : false
2048                 );
2049         }
2050
2051         /**
2052          * Make URL details where the article exists (or at least it's convenient to think so)
2053          */
2054         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2055                 $title = Title::newFromText( $name );
2056                 self::checkTitle( $title, $name );
2057
2058                 return array(
2059                         'href' => $title->getLocalURL( $urlaction ),
2060                         'exists' => true
2061                 );
2062         }
2063
2064         # make sure we have some title to operate on
2065         static function checkTitle( &$title, $name ) {
2066                 if ( !is_object( $title ) ) {
2067                         $title = Title::newFromText( $name );
2068                         if ( !is_object( $title ) ) {
2069                                 $title = Title::newFromText( '--error: link target missing--' );
2070                         }
2071                 }
2072         }
2073
2074         /**
2075          * Build an array that represents the sidebar(s), the navigation bar among them
2076          *
2077          * @return array
2078          */
2079         function buildSidebar() {
2080                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2081                 global $wgLang;
2082                 wfProfileIn( __METHOD__ );
2083
2084                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2085
2086                 if ( $wgEnableSidebarCache ) {
2087                         $cachedsidebar = $parserMemc->get( $key );
2088                         if ( $cachedsidebar ) {
2089                                 wfProfileOut( __METHOD__ );
2090                                 return $cachedsidebar;
2091                         }
2092                 }
2093
2094                 $bar = array();
2095                 $this->addToSidebar( $bar, 'sidebar' );
2096
2097                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2098                 if ( $wgEnableSidebarCache ) {
2099                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2100                 }
2101
2102                 wfProfileOut( __METHOD__ );
2103                 return $bar;
2104         }
2105         /**
2106          * Add content from a sidebar system message
2107          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2108          *
2109          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2110          *
2111          * @param &$bar array
2112          * @param $message String
2113          */
2114         function addToSidebar( &$bar, $message ) {
2115                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2116         }
2117
2118         /**
2119          * Add content from plain text
2120          * @since 1.17
2121          * @param &$bar array
2122          * @param $text string
2123          */
2124         function addToSidebarPlain( &$bar, $text ) {
2125                 $lines = explode( "\n", $text );
2126                 $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.
2127
2128                 $heading = '';
2129
2130                 foreach ( $lines as $line ) {
2131                         if ( strpos( $line, '*' ) !== 0 ) {
2132                                 continue;
2133                         }
2134
2135                         if ( strpos( $line, '**' ) !== 0 ) {
2136                                 $heading = trim( $line, '* ' );
2137                                 if ( !array_key_exists( $heading, $bar ) ) {
2138                                         $bar[$heading] = array();
2139                                 }
2140                         } else {
2141                                 $line = trim( $line, '* ' );
2142
2143                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2144                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2145                                         $link = wfMsgForContent( $line[0] );
2146
2147                                         if ( $link == '-' ) {
2148                                                 continue;
2149                                         }
2150
2151                                         $text = wfMsgExt( $line[1], 'parsemag' );
2152
2153                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2154                                                 $text = $line[1];
2155                                         }
2156
2157                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2158                                                 $link = $line[0];
2159                                         }
2160
2161                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2162                                                 $href = $link;
2163                                         } else {
2164                                                 $title = Title::newFromText( $link );
2165
2166                                                 if ( $title ) {
2167                                                         $title = $title->fixSpecialName();
2168                                                         $href = $title->getLocalURL();
2169                                                 } else {
2170                                                         $href = 'INVALID-TITLE';
2171                                                 }
2172                                         }
2173
2174                                         $bar[$heading][] = array(
2175                                                 'text' => $text,
2176                                                 'href' => $href,
2177                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2178                                                 'active' => false
2179                                         );
2180                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2181                                         global $wgParser, $wgTitle;
2182
2183                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2184
2185                                         if ( is_null( $wgParser->mOptions ) ) {
2186                                                 $wgParser->mOptions = new ParserOptions();
2187                                         }
2188
2189                                         $wgParser->mOptions->setEditSection( false );
2190                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2191                                 } else {
2192                                         continue;
2193                                 }
2194                         }
2195                 }
2196
2197                 if ( count( $wikiBar ) > 0 ) {
2198                         $bar = array_merge( $bar, $wikiBar );
2199                 }
2200
2201                 return $bar;
2202         }
2203
2204         /**
2205          * Should we include common/wikiprintable.css?  Skins that have their own
2206          * print stylesheet should override this and return false.  (This is an
2207          * ugly hack to get Monobook to play nicely with
2208          * OutputPage::headElement().)
2209          *
2210          * @return bool
2211          */
2212         public function commonPrintStylesheet() {
2213                 return true;
2214         }
2215
2216         /**
2217          * Gets new talk page messages for the current user.
2218          * @return MediaWiki message or if no new talk page messages, nothing
2219          */
2220         function getNewtalks() {
2221                 global $wgUser, $wgOut;
2222
2223                 $newtalks = $wgUser->getNewMessageLinks();
2224                 $ntl = '';
2225
2226                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2227                         $userTitle = $this->mUser->getUserPage();
2228                         $userTalkTitle = $userTitle->getTalkPage();
2229
2230                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2231                                 $newMessagesLink = $this->link(
2232                                         $userTalkTitle,
2233                                         wfMsgHtml( 'newmessageslink' ),
2234                                         array(),
2235                                         array( 'redirect' => 'no' ),
2236                                         array( 'known', 'noclasses' )
2237                                 );
2238
2239                                 $newMessagesDiffLink = $this->link(
2240                                         $userTalkTitle,
2241                                         wfMsgHtml( 'newmessagesdifflink' ),
2242                                         array(),
2243                                         array( 'diff' => 'cur' ),
2244                                         array( 'known', 'noclasses' )
2245                                 );
2246
2247                                 $ntl = wfMsg(
2248                                         'youhavenewmessages',
2249                                         $newMessagesLink,
2250                                         $newMessagesDiffLink
2251                                 );
2252                                 # Disable Squid cache
2253                                 $wgOut->setSquidMaxage( 0 );
2254                         }
2255                 } elseif ( count( $newtalks ) ) {
2256                         // _>" " for BC <= 1.16
2257                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2258                         $msgs = array();
2259
2260                         foreach ( $newtalks as $newtalk ) {
2261                                 $msgs[] = Xml::element(
2262                                         'a',
2263                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2264                                 );
2265                         }
2266                         $parts = implode( $sep, $msgs );
2267                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2268                         $wgOut->setSquidMaxage( 0 );
2269                 }
2270
2271                 return $ntl;
2272         }
2273 }