includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30
  31         /** Constructor, call parent constructor */
  32         function __construct() {
  33                 parent::__construct();
  34         }
  35
  36         /**
  37          * Fetch the set of available skins.
  38          * @return array of strings
  39          */
  40         static function getSkinNames() {
  41                 global $wgValidSkinNames;
  42                 static $skinsInitialised = false;
  43
  44                 if ( !$skinsInitialised ) {
  45                         # Get a list of available skins
  46                         # Build using the regular expression '^(.*).php$'
  47                         # Array keys are all lower case, array value keep the case used by filename
  48                         #
  49                         wfProfileIn( __METHOD__ . '-init' );
  50
  51                         global $wgStyleDirectory;
  52
  53                         $skinDir = dir( $wgStyleDirectory );
  54
  55                         # while code from www.php.net
  56                         while ( false !== ( $file = $skinDir->read() ) ) {
  57                                 // Skip non-PHP files, hidden files, and '.dep' includes
  58                                 $matches = array();
  59
  60                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  61                                         $aSkin = $matches[1];
  62                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  63                                 }
  64                         }
  65                         $skinDir->close();
  66                         $skinsInitialised = true;
  67                         wfProfileOut( __METHOD__ . '-init' );
  68                 }
  69                 return $wgValidSkinNames;
  70         }
  71
  72         /**
  73          * Fetch the list of usable skins in regards to $wgSkipSkins.
  74          * Useful for Special:Preferences and other places where you
  75          * only want to show skins users _can_ use.
  76          * @return array of strings
  77          */
  78         public static function getUsableSkins() {
  79                 global $wgSkipSkins;
  80
  81                 $usableSkins = self::getSkinNames();
  82
  83                 foreach ( $wgSkipSkins as $skip ) {
  84                         unset( $usableSkins[$skip] );
  85                 }
  86
  87                 return $usableSkins;
  88         }
  89
  90         /**
  91          * Normalize a skin preference value to a form that can be loaded.
  92          * If a skin can't be found, it will fall back to the configured
  93          * default (or the old 'Classic' skin if that's broken).
  94          * @param $key String: 'monobook', 'standard', etc.
  95          * @return string
  96          */
  97         static function normalizeKey( $key ) {
  98                 global $wgDefaultSkin;
  99
 100                 $skinNames = Skin::getSkinNames();
 101
 102                 if ( $key == '' ) {
 103                         // Don't return the default immediately;
 104                         // in a misconfiguration we need to fall back.
 105                         $key = $wgDefaultSkin;
 106                 }
 107
 108                 if ( isset( $skinNames[$key] ) ) {
 109                         return $key;
 110                 }
 111
 112                 // Older versions of the software used a numeric setting
 113                 // in the user preferences.
 114                 $fallback = array(
 115                         0 => $wgDefaultSkin,
 116                         1 => 'nostalgia',
 117                         2 => 'cologneblue'
 118                 );
 119
 120                 if ( isset( $fallback[$key] ) ) {
 121                         $key = $fallback[$key];
 122                 }
 123
 124                 if ( isset( $skinNames[$key] ) ) {
 125                         return $key;
 126                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 127                         return $wgDefaultSkin;
 128                 } else {
 129                         return 'vector';
 130                 }
 131         }
 132
 133         /**
 134          * Factory method for loading a skin of a given type
 135          * @param $key String: 'monobook', 'standard', etc.
 136          * @return Skin
 137          */
 138         static function &newFromKey( $key ) {
 139                 global $wgStyleDirectory;
 140
 141                 $key = Skin::normalizeKey( $key );
 142
 143                 $skinNames = Skin::getSkinNames();
 144                 $skinName = $skinNames[$key];
 145                 $className = 'Skin' . ucfirst( $key );
 146
 147                 # Grab the skin class and initialise it.
 148                 if ( !class_exists( $className ) ) {
 149                         // Preload base classes to work around APC/PHP5 bug
 150                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 151
 152                         if ( file_exists( $deps ) ) {
 153                                 include_once( $deps );
 154                         }
 155                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 156
 157                         # Check if we got if not failback to default skin
 158                         if ( !class_exists( $className ) ) {
 159                                 # DO NOT die if the class isn't found. This breaks maintenance
 160                                 # scripts and can cause a user account to be unrecoverable
 161                                 # except by SQL manipulation if a previously valid skin name
 162                                 # is no longer valid.
 163                                 wfDebug( "Skin class does not exist: $className\n" );
 164                                 $className = 'SkinVector';
 165                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 166                         }
 167                 }
 168                 $skin = new $className;
 169                 return $skin;
 170         }
 171
 172         /** @return string path to the skin stylesheet */
 173         function getStylesheet() {
 174                 return 'common/wikistandard.css';
 175         }
 176
 177         /** @return string skin name */
 178         public function getSkinName() {
 179                 return $this->skinname;
 180         }
 181
 182         function qbSetting() {
 183                 global $wgOut, $wgUser;
 184
 185                 if ( $wgOut->isQuickbarSuppressed() ) {
 186                         return 0;
 187                 }
 188
 189                 $q = $wgUser->getOption( 'quickbar', 0 );
 190
 191                 return $q;
 192         }
 193
 194         function initPage( OutputPage $out ) {
 195                 global $wgFavicon, $wgAppleTouchIcon;
 196
 197                 wfProfileIn( __METHOD__ );
 198
 199                 # Generally the order of the favicon and apple-touch-icon links
 200                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 201                 # uses whichever one appears later in the HTML source. Make sure
 202                 # apple-touch-icon is specified first to avoid this.
 203                 if ( false !== $wgAppleTouchIcon ) {
 204                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 205                 }
 206
 207                 if ( false !== $wgFavicon ) {
 208                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 209                 }
 210
 211                 # OpenSearch description link
 212                 $out->addLink( array(
 213                         'rel' => 'search',
 214                         'type' => 'application/opensearchdescription+xml',
 215                         'href' => wfScript( 'opensearch_desc' ),
 216                         'title' => wfMsgForContent( 'opensearch-desc' ),
 217                 ) );
 218
 219                 $this->addMetadataLinks( $out );
 220
 221                 $this->mRevisionId = $out->mRevisionId;
 222
 223                 $this->preloadExistence();
 224
 225                 wfProfileOut( __METHOD__ );
 226         }
 227
 228         /**
 229          * Preload the existence of three commonly-requested pages in a single query
 230          */
 231         function preloadExistence() {
 232                 global $wgUser;
 233
 234                 // User/talk link
 235                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 236
 237                 // Other tab link
 238                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 239                         // nothing
 240                 } elseif ( $this->mTitle->isTalkPage() ) {
 241                         $titles[] = $this->mTitle->getSubjectPage();
 242                 } else {
 243                         $titles[] = $this->mTitle->getTalkPage();
 244                 }
 245
 246                 $lb = new LinkBatch( $titles );
 247                 $lb->execute();
 248         }
 249
 250         /**
 251          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 252          * output.
 253          * @param $out Object: instance of OutputPage
 254          */
 255         function addMetadataLinks( OutputPage $out ) {
 256                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 257                 global $wgRightsPage, $wgRightsUrl;
 258
 259                 if ( $out->isArticleRelated() ) {
 260                         # note: buggy CC software only reads first "meta" link
 261                         if ( $wgEnableCreativeCommonsRdf ) {
 262                                 $out->addMetadataLink( array(
 263                                         'title' => 'Creative Commons',
 264                                         'type' => 'application/rdf+xml',
 265                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 266                                 );
 267                         }
 268
 269                         if ( $wgEnableDublinCoreRdf ) {
 270                                 $out->addMetadataLink( array(
 271                                         'title' => 'Dublin Core',
 272                                         'type' => 'application/rdf+xml',
 273                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 274                                 );
 275                         }
 276                 }
 277                 $copyright = '';
 278                 if ( $wgRightsPage ) {
 279                         $copy = Title::newFromText( $wgRightsPage );
 280
 281                         if ( $copy ) {
 282                                 $copyright = $copy->getLocalURL();
 283                         }
 284                 }
 285
 286                 if ( !$copyright && $wgRightsUrl ) {
 287                         $copyright = $wgRightsUrl;
 288                 }
 289
 290                 if ( $copyright ) {
 291                         $out->addLink( array(
 292                                 'rel' => 'copyright',
 293                                 'href' => $copyright )
 294                         );
 295                 }
 296         }
 297
 298         /**
 299          * Set some local variables
 300          */
 301         protected function setMembers() {
 302                 global $wgUser;
 303                 $this->mUser = $wgUser;
 304                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 305                 $this->usercss = false;
 306         }
 307
 308         /**
 309          * Set the title
 310          * @param $t Title object to use
 311          */
 312         public function setTitle( $t ) {
 313                 $this->mTitle = $t;
 314         }
 315
 316         /** Get the title */
 317         public function getTitle() {
 318                 return $this->mTitle;
 319         }
 320
 321         /**
 322          * Outputs the HTML generated by other functions.
 323          * @param $out Object: instance of OutputPage
 324          */
 325         function outputPage( OutputPage $out ) {
 326                 global $wgDebugComments;
 327                 wfProfileIn( __METHOD__ );
 328
 329                 $this->setMembers();
 330                 $this->initPage( $out );
 331
 332                 // See self::afterContentHook() for documentation
 333                 $afterContent = $this->afterContentHook();
 334
 335                 $out->out( $out->headElement( $this ) );
 336
 337                 if ( $wgDebugComments ) {
 338                         $out->out( "<!-- Wiki debugging output:\n" .
 339                           $out->mDebugtext . "-->\n" );
 340                 }
 341
 342                 $out->out( $this->beforeContent() );
 343
 344                 $out->out( $out->mBodytext . "\n" );
 345
 346                 $out->out( $this->afterContent() );
 347
 348                 $out->out( $afterContent );
 349
 350                 $out->out( $this->bottomScripts( $out ) );
 351
 352                 $out->out( wfReportTime() );
 353
 354                 $out->out( "\n</body></html>" );
 355                 wfProfileOut( __METHOD__ );
 356         }
 357
 358         static function makeVariablesScript( $data ) {
 359                 if ( $data ) {
 360                         return Html::inlineScript( 'mediaWiki.config.set(' . FormatJson::encode( $data ) . ');' );
 361                 } else {
 362                         return '';
 363                 }
 364         }
 365
 366         /**
 367          * Make a <script> tag containing global variables
 368          * @param $skinName string Name of the skin
 369          * The odd calling convention is for backwards compatibility
 370          * @todo FIXME: Make this not depend on $wgTitle!
 371          *
 372          * Do not add things here which can be evaluated in ResourceLoaderStartupScript - in other words, without state.
 373          * You will only be adding bloat to the page and causing page caches to have to be purged on configuration changes.
 374          */
 375         static function makeGlobalVariablesScript( $skinName ) {
 376                 global $wgTitle, $wgUser, $wgRequest, $wgArticle, $wgOut, $wgRestrictionTypes, $wgUseAjax, $wgEnableMWSuggest;
 377
 378                 $ns = $wgTitle->getNamespace();
 379                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 380                 $vars = array(
 381                         'wgCanonicalNamespace' => $nsname,
 382                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 383                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 384                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 385                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 386                         'wgTitle' => $wgTitle->getText(),
 387                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 388                         'wgArticleId' => $wgTitle->getArticleId(),
 389                         'wgIsArticle' => $wgOut->isArticle(),
 390                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 391                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 392                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 393                         'wgCategories' => $wgOut->getCategories(),
 394                 );
 395                 foreach ( $wgRestrictionTypes as $type ) {
 396                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 397                 }
 398                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 399                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 400                 }
 401
 402                 // Allow extensions to add their custom variables to the global JS variables
 403                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 404
 405                 return self::makeVariablesScript( $vars );
 406         }
 407
 408         /**
 409          * To make it harder for someone to slip a user a fake
 410          * user-JavaScript or user-CSS preview, a random token
 411          * is associated with the login session. If it's not
 412          * passed back with the preview request, we won't render
 413          * the code.
 414          *
 415          * @param $action String: 'edit', 'submit' etc.
 416          * @return bool
 417          */
 418         public function userCanPreview( $action ) {
 419                 global $wgRequest, $wgUser;
 420
 421                 if ( $action != 'submit' ) {
 422                         return false;
 423                 }
 424                 if ( !$wgRequest->wasPosted() ) {
 425                         return false;
 426                 }
 427                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 428                         return false;
 429                 }
 430                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 431                         return false;
 432                 }
 433
 434                 return $wgUser->matchEditToken(
 435                         $wgRequest->getVal( 'wpEditToken' ) );
 436         }
 437
 438         /**
 439          * Generated JavaScript action=raw&gen=js
 440          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 441          * nated together.  For some bizarre reason, it does *not* return any
 442          * custom user JS from subpages.  Huh?
 443          *
 444          * There's absolutely no reason to have separate Monobook/Common JSes.
 445          * Any JS that cares can just check the skin variable generated at the
 446          * top.  For now Monobook.js will be maintained, but it should be consi-
 447          * dered deprecated.
 448          *
 449          * @param $skinName String: If set, overrides the skin name
 450          * @return string
 451          */
 452         public function generateUserJs( $skinName = null ) {
 453
 454                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 455
 456                 return '';
 457         }
 458
 459         /**
 460          * Generate user stylesheet for action=raw&gen=css
 461          */
 462         public function generateUserStylesheet() {
 463
 464                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 465
 466                 return '';
 467         }
 468
 469         /**
 470          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 471          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 472          */
 473         protected function reallyGenerateUserStylesheet() {
 474
 475                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 476
 477                 return '';
 478         }
 479
 480         /**
 481          * @private
 482          */
 483         function setupUserCss( OutputPage $out ) {
 484                 global $wgRequest, $wgUser;
 485                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs, $wgSquidMaxage;
 486
 487                 wfProfileIn( __METHOD__ );
 488
 489                 $this->setupSkinUserCss( $out );
 490
 491                 $siteargs = array(
 492                         'action' => 'raw',
 493                         'maxage' => $wgSquidMaxage,
 494                 );
 495
 496                 // Add any extension CSS
 497                 foreach ( $out->getExtStyle() as $url ) {
 498                         $out->addStyle( $url );
 499                 }
 500
 501                 // Per-site custom styles
 502                 if ( $wgUseSiteCss ) {
 503                         $out->addModuleStyles( 'site' );
 504                 }
 505
 506                 // Per-user custom styles
 507                 if ( $wgAllowUserCss ) {
 508                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 509                                 // @FIXME: properly escape the cdata!
 510                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 511                         } else {
 512                                 $out->addModuleStyles( 'user' );
 513                         }
 514                 }
 515
 516                 // Per-user preference styles
 517                 if ( $wgAllowUserCssPrefs ) {
 518                         $out->addModuleStyles( 'user.preferences' );
 519                 }
 520
 521                 wfProfileOut( __METHOD__ );
 522         }
 523
 524         /**
 525          * Get the query to generate a dynamic stylesheet
 526          *
 527          * @return array
 528          */
 529         public static function getDynamicStylesheetQuery() {
 530                 global $wgSquidMaxage;
 531
 532                 return array(
 533                                 'action' => 'raw',
 534                                 'maxage' => $wgSquidMaxage,
 535                                 'usemsgcache' => 'yes',
 536                                 'ctype' => 'text/css',
 537                                 'smaxage' => $wgSquidMaxage,
 538                         );
 539         }
 540
 541         /**
 542          * Add skin specific stylesheets
 543          * @param $out OutputPage
 544          */
 545         function setupSkinUserCss( OutputPage $out ) {
 546                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 547                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 548                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 549                 $out->addStyle( $this->getStylesheet() );
 550                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 551         }
 552
 553         function getPageClasses( $title ) {
 554                 $numeric = 'ns-' . $title->getNamespace();
 555
 556                 if ( $title->getNamespace() == NS_SPECIAL ) {
 557                         $type = 'ns-special';
 558                 } elseif ( $title->isTalkPage() ) {
 559                         $type = 'ns-talk';
 560                 } else {
 561                         $type = 'ns-subject';
 562                 }
 563
 564                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 565
 566                 return "$numeric $type $name";
 567         }
 568
 569         /**
 570          * URL to the logo
 571          */
 572         function getLogo() {
 573                 global $wgLogo;
 574                 return $wgLogo;
 575         }
 576
 577         /**
 578          * This will be called immediately after the <body> tag.  Split into
 579          * two functions to make it easier to subclass.
 580          */
 581         function beforeContent() {
 582                 return $this->doBeforeContent();
 583         }
 584
 585         function doBeforeContent() {
 586                 global $wgContLang;
 587                 wfProfileIn( __METHOD__ );
 588
 589                 $s = '';
 590                 $qb = $this->qbSetting();
 591
 592                 $langlinks = $this->otherLanguages();
 593                 if ( $langlinks ) {
 594                         $rows = 2;
 595                         $borderhack = '';
 596                 } else {
 597                         $rows = 1;
 598                         $langlinks = false;
 599                         $borderhack = 'class="top"';
 600                 }
 601
 602                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 603                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 604
 605                 $shove = ( $qb != 0 );
 606                 $left = ( $qb == 1 || $qb == 3 );
 607
 608                 if ( $wgContLang->isRTL() ) {
 609                         $left = !$left;
 610                 }
 611
 612                 if ( !$shove ) {
 613                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 614                                 $this->logoText() . '</td>';
 615                 } elseif ( $left ) {
 616                         $s .= $this->getQuickbarCompensator( $rows );
 617                 }
 618
 619                 $l = $wgContLang->alignStart();
 620                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 621
 622                 $s .= $this->topLinks();
 623                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 624
 625                 $r = $wgContLang->alignEnd();
 626                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 627                 $s .= $this->nameAndLogin();
 628                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 629
 630                 if ( $langlinks ) {
 631                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 632                 }
 633
 634                 if ( $shove && !$left ) { # Right
 635                         $s .= $this->getQuickbarCompensator( $rows );
 636                 }
 637
 638                 $s .= "</tr>\n</table>\n</div>\n";
 639                 $s .= "\n<div id='article'>\n";
 640
 641                 $notice = wfGetSiteNotice();
 642
 643                 if ( $notice ) {
 644                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 645                 }
 646                 $s .= $this->pageTitle();
 647                 $s .= $this->pageSubtitle();
 648                 $s .= $this->getCategories();
 649
 650                 wfProfileOut( __METHOD__ );
 651                 return $s;
 652         }
 653
 654         function getCategoryLinks() {
 655                 global $wgOut, $wgUseCategoryBrowser;
 656                 global $wgContLang, $wgUser;
 657
 658                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 659                         return '';
 660                 }
 661
 662                 # Separator
 663                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 664
 665                 // Use Unicode bidi embedding override characters,
 666                 // to make sure links don't smash each other up in ugly ways.
 667                 $dir = $wgContLang->getDir();
 668                 $embed = "<span dir='$dir'>";
 669                 $pop = '</span>';
 670
 671                 $allCats = $wgOut->getCategoryLinks();
 672                 $s = '';
 673                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 674
 675                 if ( !empty( $allCats['normal'] ) ) {
 676                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 677
 678                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 679                         $s .= '<div id="mw-normal-catlinks">' .
 680                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 681                                 . $colon . $t . '</div>';
 682                 }
 683
 684                 # Hidden categories
 685                 if ( isset( $allCats['hidden'] ) ) {
 686                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 687                                 $class = 'mw-hidden-cats-user-shown';
 688                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 689                                 $class = 'mw-hidden-cats-ns-shown';
 690                         } else {
 691                                 $class = 'mw-hidden-cats-hidden';
 692                         }
 693
 694                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 695                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 696                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 697                                 '</div>';
 698                 }
 699
 700                 # optional 'dmoz-like' category browser. Will be shown under the list
 701                 # of categories an article belong to
 702                 if ( $wgUseCategoryBrowser ) {
 703                         $s .= '<br /><hr />';
 704
 705                         # get a big array of the parents tree
 706                         $parenttree = $this->mTitle->getParentCategoryTree();
 707                         # Skin object passed by reference cause it can not be
 708                         # accessed under the method subfunction drawCategoryBrowser
 709                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 710                         # Clean out bogus first entry and sort them
 711                         unset( $tempout[0] );
 712                         asort( $tempout );
 713                         # Output one per line
 714                         $s .= implode( "<br />\n", $tempout );
 715                 }
 716
 717                 return $s;
 718         }
 719
 720         /**
 721          * Render the array as a serie of links.
 722          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 723          * @param &skin Object: skin passed by reference
 724          * @return String separated by &gt;, terminate with "\n"
 725          */
 726         function drawCategoryBrowser( $tree, &$skin ) {
 727                 $return = '';
 728
 729                 foreach ( $tree as $element => $parent ) {
 730                         if ( empty( $parent ) ) {
 731                                 # element start a new list
 732                                 $return .= "\n";
 733                         } else {
 734                                 # grab the others elements
 735                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 736                         }
 737
 738                         # add our current element to the list
 739                         $eltitle = Title::newFromText( $element );
 740                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 741                 }
 742
 743                 return $return;
 744         }
 745
 746         function getCategories() {
 747                 $catlinks = $this->getCategoryLinks();
 748
 749                 $classes = 'catlinks';
 750
 751                 global $wgOut, $wgUser;
 752
 753                 // Check what we're showing
 754                 $allCats = $wgOut->getCategoryLinks();
 755                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 756                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 757
 758                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 759                         $classes .= ' catlinks-allhidden';
 760                 }
 761
 762                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 763         }
 764
 765         function getQuickbarCompensator( $rows = 1 ) {
 766                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 767         }
 768
 769         /**
 770          * This runs a hook to allow extensions placing their stuff after content
 771          * and article metadata (e.g. categories).
 772          * Note: This function has nothing to do with afterContent().
 773          *
 774          * This hook is placed here in order to allow using the same hook for all
 775          * skins, both the SkinTemplate based ones and the older ones, which directly
 776          * use this class to get their data.
 777          *
 778          * The output of this function gets processed in SkinTemplate::outputPage() for
 779          * the SkinTemplate based skins, all other skins should directly echo it.
 780          *
 781          * Returns an empty string by default, if not changed by any hook function.
 782          */
 783         protected function afterContentHook() {
 784                 $data = '';
 785
 786                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 787                         // adding just some spaces shouldn't toggle the output
 788                         // of the whole <div/>, so we use trim() here
 789                         if ( trim( $data ) != '' ) {
 790                                 // Doing this here instead of in the skins to
 791                                 // ensure that the div has the same ID in all
 792                                 // skins
 793                                 $data = "<div id='mw-data-after-content'>\n" .
 794                                         "\t$data\n" .
 795                                         "</div>\n";
 796                         }
 797                 } else {
 798                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 799                 }
 800
 801                 return $data;
 802         }
 803
 804         /**
 805          * Generate debug data HTML for displaying at the bottom of the main content
 806          * area.
 807          * @return String HTML containing debug data, if enabled (otherwise empty).
 808          */
 809         protected function generateDebugHTML() {
 810                 global $wgShowDebug, $wgOut;
 811
 812                 if ( $wgShowDebug ) {
 813                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 814                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 815                                 $listInternals . "</ul>\n";
 816                 }
 817
 818                 return '';
 819         }
 820
 821         private function formatDebugHTML( $debugText ) {
 822                 $lines = explode( "\n", $debugText );
 823                 $curIdent = 0;
 824                 $ret = '<li>';
 825
 826                 foreach ( $lines as $line ) {
 827                         $m = array();
 828                         $display = ltrim( $line );
 829                         $ident = strlen( $line ) - strlen( $display );
 830                         $diff = $ident - $curIdent;
 831
 832                         if ( $display == '' ) {
 833                                 $display = "\xc2\xa0";
 834                         }
 835
 836                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 837                                 $ident = $curIdent;
 838                                 $diff = 0;
 839                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 840                         } else {
 841                                 $display = htmlspecialchars( $display );
 842                         }
 843
 844                         if ( $diff < 0 ) {
 845                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 846                         } elseif ( $diff == 0 ) {
 847                                 $ret .= "</li><li>\n";
 848                         } else {
 849                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 850                         }
 851                         $ret .= $display . "\n";
 852
 853                         $curIdent = $ident;
 854                 }
 855
 856                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 857
 858                 return $ret;
 859         }
 860
 861         /**
 862          * This gets called shortly before the </body> tag.
 863          * @return String HTML to be put before </body>
 864          */
 865         function afterContent() {
 866                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 867                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 868         }
 869
 870         /**
 871          * This gets called shortly before the </body> tag.
 872          * @param $out OutputPage object
 873          * @return String HTML-wrapped JS code to be put before </body>
 874          */
 875         function bottomScripts( $out ) {
 876                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 877                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 878
 879                 return $bottomScriptText;
 880         }
 881
 882         /** @return string Retrievied from HTML text */
 883         function printSource() {
 884                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 885                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 886         }
 887
 888         function printFooter() {
 889                 return "<p>" .  $this->printSource() .
 890                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 891         }
 892
 893         /** overloaded by derived classes */
 894         function doAfterContent() {
 895                 return '</div></div>';
 896         }
 897
 898         function pageTitleLinks() {
 899                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 900
 901                 $oldid = $wgRequest->getVal( 'oldid' );
 902                 $diff = $wgRequest->getVal( 'diff' );
 903                 $action = $wgRequest->getText( 'action' );
 904
 905                 $s[] = $this->printableLink();
 906                 $disclaimer = $this->disclaimerLink(); # may be empty
 907
 908                 if ( $disclaimer ) {
 909                         $s[] = $disclaimer;
 910                 }
 911
 912                 $privacy = $this->privacyLink(); # may be empty too
 913
 914                 if ( $privacy ) {
 915                         $s[] = $privacy;
 916                 }
 917
 918                 if ( $wgOut->isArticleRelated() ) {
 919                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
 920                                 $name = $this->mTitle->getDBkey();
 921                                 $image = wfFindFile( $this->mTitle );
 922
 923                                 if ( $image ) {
 924                                         $link = htmlspecialchars( $image->getURL() );
 925                                         $style = $this->getInternalLinkAttributes( $link, $name );
 926                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 927                                 }
 928                         }
 929                 }
 930
 931                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 932                         $s[] .= $this->link(
 933                                         $this->mTitle,
 934                                         wfMsg( 'currentrev' ),
 935                                         array(),
 936                                         array(),
 937                                         array( 'known', 'noclasses' )
 938                         );
 939                 }
 940
 941                 if ( $wgUser->getNewtalk() ) {
 942                         # do not show "You have new messages" text when we are viewing our
 943                         # own talk page
 944                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
 945                                 $tl = $this->link(
 946                                         $wgUser->getTalkPage(),
 947                                         wfMsgHtml( 'newmessageslink' ),
 948                                         array(),
 949                                         array( 'redirect' => 'no' ),
 950                                         array( 'known', 'noclasses' )
 951                                 );
 952
 953                                 $dl = $this->link(
 954                                         $wgUser->getTalkPage(),
 955                                         wfMsgHtml( 'newmessagesdifflink' ),
 956                                         array(),
 957                                         array( 'diff' => 'cur' ),
 958                                         array( 'known', 'noclasses' )
 959                                 );
 960                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 961                                 # disable caching
 962                                 $wgOut->setSquidMaxage( 0 );
 963                                 $wgOut->enableClientCache( false );
 964                         }
 965                 }
 966
 967                 $undelete = $this->getUndeleteLink();
 968
 969                 if ( !empty( $undelete ) ) {
 970                         $s[] = $undelete;
 971                 }
 972
 973                 return $wgLang->pipeList( $s );
 974         }
 975
 976         function getUndeleteLink() {
 977                 global $wgUser, $wgLang, $wgRequest;
 978
 979                 $action = $wgRequest->getVal( 'action', 'view' );
 980
 981                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
 982                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
 983                         $n = $this->mTitle->isDeleted();
 984
 985                         if ( $n ) {
 986                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
 987                                         $msg = 'thisisdeleted';
 988                                 } else {
 989                                         $msg = 'viewdeleted';
 990                                 }
 991
 992                                 return wfMsg(
 993                                         $msg,
 994                                         $this->link(
 995                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
 996                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
 997                                                 array(),
 998                                                 array(),
 999                                                 array( 'known', 'noclasses' )
1000                                         )
1001                                 );
1002                         }
1003                 }
1004
1005                 return '';
1006         }
1007
1008         function printableLink() {
1009                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1010
1011                 $s = array();
1012
1013                 if ( !$wgOut->isPrintable() ) {
1014                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1015                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1016                 }
1017
1018                 if ( $wgOut->isSyndicated() ) {
1019                         foreach ( $wgFeedClasses as $format => $class ) {
1020                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1021                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1022                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1023                         }
1024                 }
1025                 return $wgLang->pipeList( $s );
1026         }
1027
1028         /**
1029          * Gets the h1 element with the page title.
1030          * @return string
1031          */
1032         function pageTitle() {
1033                 global $wgOut;
1034                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1035                 return $s;
1036         }
1037
1038         function pageSubtitle() {
1039                 global $wgOut;
1040
1041                 $sub = $wgOut->getSubtitle();
1042
1043                 if ( $sub == '' ) {
1044                         global $wgExtraSubtitle;
1045                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1046                 }
1047
1048                 $subpages = $this->subPageSubtitle();
1049                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1050                 $s = "<p class='subtitle'>{$sub}</p>\n";
1051
1052                 return $s;
1053         }
1054
1055         function subPageSubtitle() {
1056                 $subpages = '';
1057
1058                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1059                         return $subpages;
1060                 }
1061
1062                 global $wgOut;
1063
1064                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1065                         $ptext = $this->mTitle->getPrefixedText();
1066                         if ( preg_match( '/\//', $ptext ) ) {
1067                                 $links = explode( '/', $ptext );
1068                                 array_pop( $links );
1069                                 $c = 0;
1070                                 $growinglink = '';
1071                                 $display = '';
1072
1073                                 foreach ( $links as $link ) {
1074                                         $growinglink .= $link;
1075                                         $display .= $link;
1076                                         $linkObj = Title::newFromText( $growinglink );
1077
1078                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1079                                                 $getlink = $this->link(
1080                                                         $linkObj,
1081                                                         htmlspecialchars( $display ),
1082                                                         array(),
1083                                                         array(),
1084                                                         array( 'known', 'noclasses' )
1085                                                 );
1086
1087                                                 $c++;
1088
1089                                                 if ( $c > 1 ) {
1090                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1091                                                 } else  {
1092                                                         $subpages .= '&lt; ';
1093                                                 }
1094
1095                                                 $subpages .= $getlink;
1096                                                 $display = '';
1097                                         } else {
1098                                                 $display .= '/';
1099                                         }
1100                                         $growinglink .= '/';
1101                                 }
1102                         }
1103                 }
1104
1105                 return $subpages;
1106         }
1107
1108         /**
1109          * Returns true if the IP should be shown in the header
1110          */
1111         function showIPinHeader() {
1112                 global $wgShowIPinHeader;
1113                 return $wgShowIPinHeader && session_id() != '';
1114         }
1115
1116         function nameAndLogin() {
1117                 global $wgUser, $wgLang, $wgContLang;
1118
1119                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1120
1121                 $ret = '';
1122
1123                 if ( $wgUser->isAnon() ) {
1124                         if ( $this->showIPinHeader() ) {
1125                                 $name = wfGetIP();
1126
1127                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1128                                         $wgLang->getNsText( NS_TALK ) );
1129
1130                                 $ret .= "$name ($talkLink)";
1131                         } else {
1132                                 $ret .= wfMsg( 'notloggedin' );
1133                         }
1134
1135                         $returnTo = $this->mTitle->getPrefixedDBkey();
1136                         $query = array();
1137
1138                         if ( $logoutPage != $returnTo ) {
1139                                 $query['returnto'] = $returnTo;
1140                         }
1141
1142                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1143                                 ? 'nav-login-createaccount'
1144                                 : 'login';
1145                         $ret .= "\n<br />" . $this->link(
1146                                 SpecialPage::getTitleFor( 'Userlogin' ),
1147                                 wfMsg( $loginlink ), array(), $query
1148                         );
1149                 } else {
1150                         $returnTo = $this->mTitle->getPrefixedDBkey();
1151                         $talkLink = $this->link( $wgUser->getTalkPage(),
1152                                 $wgLang->getNsText( NS_TALK ) );
1153
1154                         $ret .= $this->link( $wgUser->getUserPage(),
1155                                 htmlspecialchars( $wgUser->getName() ) );
1156                         $ret .= " ($talkLink)<br />";
1157                         $ret .= $wgLang->pipeList( array(
1158                                 $this->link(
1159                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1160                                         array(), array( 'returnto' => $returnTo )
1161                                 ),
1162                                 $this->specialLink( 'preferences' ),
1163                         ) );
1164                 }
1165
1166                 $ret = $wgLang->pipeList( array(
1167                         $ret,
1168                         $this->link(
1169                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1170                                 wfMsg( 'help' )
1171                         ),
1172                 ) );
1173
1174                 return $ret;
1175         }
1176
1177         function getSearchLink() {
1178                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1179                 return $searchPage->getLocalURL();
1180         }
1181
1182         function escapeSearchLink() {
1183                 return htmlspecialchars( $this->getSearchLink() );
1184         }
1185
1186         function searchForm() {
1187                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1188
1189                 $search = $wgRequest->getText( 'search' );
1190
1191                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1192                   . $this->escapeSearchLink() . "\">\n"
1193                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1194                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1195                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1196
1197                 if ( $wgUseTwoButtonsSearchForm ) {
1198                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1199                 } else {
1200                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1201                 }
1202
1203                 $s .= '</form>';
1204
1205                 // Ensure unique id's for search boxes made after the first
1206                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1207
1208                 return $s;
1209         }
1210
1211         function topLinks() {
1212                 global $wgOut;
1213
1214                 $s = array(
1215                         $this->mainPageLink(),
1216                         $this->specialLink( 'recentchanges' )
1217                 );
1218
1219                 if ( $wgOut->isArticleRelated() ) {
1220                         $s[] = $this->editThisPage();
1221                         $s[] = $this->historyLink();
1222                 }
1223
1224                 # Many people don't like this dropdown box
1225                 # $s[] = $this->specialPagesList();
1226
1227                 if ( $this->variantLinks() ) {
1228                         $s[] = $this->variantLinks();
1229                 }
1230
1231                 if ( $this->extensionTabLinks() ) {
1232                         $s[] = $this->extensionTabLinks();
1233                 }
1234
1235                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1236                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1237         }
1238
1239         /**
1240          * Compatibility for extensions adding functionality through tabs.
1241          * Eventually these old skins should be replaced with SkinTemplate-based
1242          * versions, sigh...
1243          * @return string
1244          */
1245         function extensionTabLinks() {
1246                 $tabs = array();
1247                 $out = '';
1248                 $s = array();
1249                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1250                 foreach ( $tabs as $tab ) {
1251                         $s[] = Xml::element( 'a',
1252                                 array( 'href' => $tab['href'] ),
1253                                 $tab['text'] );
1254                 }
1255
1256                 if ( count( $s ) ) {
1257                         global $wgLang;
1258
1259                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1260                         $out .= $wgLang->pipeList( $s );
1261                 }
1262
1263                 return $out;
1264         }
1265
1266         /**
1267          * Language/charset variant links for classic-style skins
1268          * @return string
1269          */
1270         function variantLinks() {
1271                 $s = '';
1272
1273                 /* show links to different language variants */
1274                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1275
1276                 $variants = $wgContLang->getVariants();
1277
1278                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1279                         foreach ( $variants as $code ) {
1280                                 $varname = $wgContLang->getVariantname( $code );
1281
1282                                 if ( $varname == 'disable' ) {
1283                                         continue;
1284                                 }
1285                                 $s = $wgLang->pipeList( array(
1286                                         $s,
1287                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1288                                 ) );
1289                         }
1290                 }
1291
1292                 return $s;
1293         }
1294
1295         function bottomLinks() {
1296                 global $wgOut, $wgUser, $wgUseTrackbacks;
1297                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1298
1299                 $s = '';
1300                 if ( $wgOut->isArticleRelated() ) {
1301                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1302
1303                         if ( $wgUser->isLoggedIn() ) {
1304                                 $element[] = $this->watchThisPage();
1305                         }
1306
1307                         $element[] = $this->talkLink();
1308                         $element[] = $this->historyLink();
1309                         $element[] = $this->whatLinksHere();
1310                         $element[] = $this->watchPageLinksLink();
1311
1312                         if ( $wgUseTrackbacks ) {
1313                                 $element[] = $this->trackbackLink();
1314                         }
1315
1316                         if (
1317                                 $this->mTitle->getNamespace() == NS_USER ||
1318                                 $this->mTitle->getNamespace() == NS_USER_TALK
1319                         ) {
1320                                 $id = User::idFromName( $this->mTitle->getText() );
1321                                 $ip = User::isIP( $this->mTitle->getText() );
1322
1323                                 # Both anons and non-anons have contributions list
1324                                 if ( $id || $ip ) {
1325                                         $element[] = $this->userContribsLink();
1326                                 }
1327
1328                                 if ( $this->showEmailUser( $id ) ) {
1329                                         $element[] = $this->emailUserLink();
1330                                 }
1331                         }
1332
1333                         $s = implode( $element, $sep );
1334
1335                         if ( $this->mTitle->getArticleId() ) {
1336                                 $s .= "\n<br />";
1337
1338                                 // Delete/protect/move links for privileged users
1339                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1340                                         $s .= $this->deleteThisPage();
1341                                 }
1342
1343                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1344                                         $s .= $sep . $this->protectThisPage();
1345                                 }
1346
1347                                 if ( $wgUser->isAllowed( 'move' ) ) {
1348                                         $s .= $sep . $this->moveThisPage();
1349                                 }
1350                         }
1351
1352                         $s .= "<br />\n" . $this->otherLanguages();
1353                 }
1354
1355                 return $s;
1356         }
1357
1358         function pageStats() {
1359                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1360                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1361
1362                 $oldid = $wgRequest->getVal( 'oldid' );
1363                 $diff = $wgRequest->getVal( 'diff' );
1364
1365                 if ( !$wgOut->isArticle() ) {
1366                         return '';
1367                 }
1368
1369                 if ( !$wgArticle instanceof Article ) {
1370                         return '';
1371                 }
1372
1373                 if ( isset( $oldid ) || isset( $diff ) ) {
1374                         return '';
1375                 }
1376
1377                 if ( 0 == $wgArticle->getID() ) {
1378                         return '';
1379                 }
1380
1381                 $s = '';
1382
1383                 if ( !$wgDisableCounters ) {
1384                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1385
1386                         if ( $count ) {
1387                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1388                         }
1389                 }
1390
1391                 if ( $wgMaxCredits != 0 ) {
1392                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1393                 } else {
1394                         $s .= $this->lastModified();
1395                 }
1396
1397                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1398                         $dbr = wfGetDB( DB_SLAVE );
1399                         $res = $dbr->select(
1400                                 'watchlist',
1401                                 array( 'COUNT(*) AS n' ),
1402                                 array(
1403                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1404                                         'wl_namespace' => $this->mTitle->getNamespace()
1405                                 ),
1406                                 __METHOD__
1407                         );
1408                         $x = $dbr->fetchObject( $res );
1409
1410                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1411                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1412                         );
1413                 }
1414
1415                 return $s . ' ' .  $this->getCopyright();
1416         }
1417
1418         function getCopyright( $type = 'detect' ) {
1419                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1420
1421                 if ( $type == 'detect' ) {
1422                         $diff = $wgRequest->getVal( 'diff' );
1423                         $isCur = $wgArticle && $wgArticle->isCurrent();
1424
1425                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1426                                 $type = 'history';
1427                         } else {
1428                                 $type = 'normal';
1429                         }
1430                 }
1431
1432                 if ( $type == 'history' ) {
1433                         $msg = 'history_copyright';
1434                 } else {
1435                         $msg = 'copyright';
1436                 }
1437
1438                 $out = '';
1439
1440                 if ( $wgRightsPage ) {
1441                         $title = Title::newFromText( $wgRightsPage );
1442                         $link = $this->linkKnown( $title, $wgRightsText );
1443                 } elseif ( $wgRightsUrl ) {
1444                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1445                 } elseif ( $wgRightsText ) {
1446                         $link = $wgRightsText;
1447                 } else {
1448                         # Give up now
1449                         return $out;
1450                 }
1451
1452                 // Allow for site and per-namespace customization of copyright notice.
1453                 $forContent = true;
1454
1455                 if ( isset( $wgArticle ) ) {
1456                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1457                 }
1458
1459                 if ( $forContent ) {
1460                         $out .= wfMsgForContent( $msg, $link );
1461                 } else {
1462                         $out .= wfMsg( $msg, $link );
1463                 }
1464
1465                 return $out;
1466         }
1467
1468         function getCopyrightIcon() {
1469                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1470
1471                 $out = '';
1472
1473                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1474                         $out = $wgCopyrightIcon;
1475                 } elseif ( $wgRightsIcon ) {
1476                         $icon = htmlspecialchars( $wgRightsIcon );
1477
1478                         if ( $wgRightsUrl ) {
1479                                 $url = htmlspecialchars( $wgRightsUrl );
1480                                 $out .= '<a href="' . $url . '">';
1481                         }
1482
1483                         $text = htmlspecialchars( $wgRightsText );
1484                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1485
1486                         if ( $wgRightsUrl ) {
1487                                 $out .= '</a>';
1488                         }
1489                 }
1490
1491                 return $out;
1492         }
1493
1494         /**
1495          * Gets the powered by MediaWiki icon.
1496          * @return string
1497          */
1498         function getPoweredBy() {
1499                 global $wgStylePath;
1500
1501                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1502                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1503
1504                 return $img;
1505         }
1506
1507         function lastModified() {
1508                 global $wgLang, $wgArticle;
1509
1510                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1511                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1512                 } else {
1513                         $timestamp = $wgArticle->getTimestamp();
1514                 }
1515
1516                 if ( $timestamp ) {
1517                         $d = $wgLang->date( $timestamp, true );
1518                         $t = $wgLang->time( $timestamp, true );
1519                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1520                 } else {
1521                         $s = '';
1522                 }
1523
1524                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1525                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1526                 }
1527
1528                 return $s;
1529         }
1530
1531         function logoText( $align = '' ) {
1532                 if ( $align != '' ) {
1533                         $a = " align='{$align}'";
1534                 } else {
1535                         $a = '';
1536                 }
1537
1538                 $mp = wfMsg( 'mainpage' );
1539                 $mptitle = Title::newMainPage();
1540                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1541
1542                 $logourl = $this->getLogo();
1543                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1544
1545                 return $s;
1546         }
1547
1548         /**
1549          * Show a drop-down box of special pages
1550          */
1551         function specialPagesList() {
1552                 global $wgContLang, $wgServer, $wgRedirectScript;
1553
1554                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1555
1556                 foreach ( $pages as $name => $page ) {
1557                         $pages[$name] = $page->getDescription();
1558                 }
1559
1560                 $go = wfMsg( 'go' );
1561                 $sp = wfMsg( 'specialpages' );
1562                 $spp = $wgContLang->specialPage( 'Specialpages' );
1563
1564                 $s = '<form id="specialpages" method="get" ' .
1565                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1566                 $s .= "<select name=\"wpDropdown\">\n";
1567                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1568
1569
1570                 foreach ( $pages as $name => $desc ) {
1571                         $p = $wgContLang->specialPage( $name );
1572                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1573                 }
1574
1575                 $s .= "</select>\n";
1576                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1577                 $s .= "</form>\n";
1578
1579                 return $s;
1580         }
1581
1582         /**
1583          * Gets the link to the wiki's main page.
1584          * @return string
1585          */
1586         function mainPageLink() {
1587                 $s = $this->link(
1588                         Title::newMainPage(),
1589                         wfMsg( 'mainpage' ),
1590                         array(),
1591                         array(),
1592                         array( 'known', 'noclasses' )
1593                 );
1594
1595                 return $s;
1596         }
1597
1598         private function footerLink( $desc, $page ) {
1599                 // if the link description has been set to "-" in the default language,
1600                 if ( wfMsgForContent( $desc )  == '-' ) {
1601                         // then it is disabled, for all languages.
1602                         return '';
1603                 } else {
1604                         // Otherwise, we display the link for the user, described in their
1605                         // language (which may or may not be the same as the default language),
1606                         // but we make the link target be the one site-wide page.
1607                         $title = Title::newFromText( wfMsgForContent( $page ) );
1608
1609                         return $this->linkKnown(
1610                                 $title,
1611                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1612                         );
1613                 }
1614         }
1615
1616         /**
1617          * Gets the link to the wiki's privacy policy page.
1618          */
1619         function privacyLink() {
1620                 return $this->footerLink( 'privacy', 'privacypage' );
1621         }
1622
1623         /**
1624          * Gets the link to the wiki's about page.
1625          */
1626         function aboutLink() {
1627                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1628         }
1629
1630         /**
1631          * Gets the link to the wiki's general disclaimers page.
1632          */
1633         function disclaimerLink() {
1634                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1635         }
1636
1637         function editThisPage() {
1638                 global $wgOut;
1639
1640                 if ( !$wgOut->isArticleRelated() ) {
1641                         $s = wfMsg( 'protectedpage' );
1642                 } else {
1643                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1644                                 $t = wfMsg( 'editthispage' );
1645                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1646                                 $t = wfMsg( 'create-this-page' );
1647                         } else {
1648                                 $t = wfMsg( 'viewsource' );
1649                         }
1650
1651                         $s = $this->link(
1652                                 $this->mTitle,
1653                                 $t,
1654                                 array(),
1655                                 $this->editUrlOptions(),
1656                                 array( 'known', 'noclasses' )
1657                         );
1658                 }
1659
1660                 return $s;
1661         }
1662
1663         /**
1664          * Return URL options for the 'edit page' link.
1665          * This may include an 'oldid' specifier, if the current page view is such.
1666          *
1667          * @return array
1668          * @private
1669          */
1670         function editUrlOptions() {
1671                 global $wgArticle;
1672
1673                 $options = array( 'action' => 'edit' );
1674
1675                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1676                         $options['oldid'] = intval( $this->mRevisionId );
1677                 }
1678
1679                 return $options;
1680         }
1681
1682         function deleteThisPage() {
1683                 global $wgUser, $wgRequest;
1684
1685                 $diff = $wgRequest->getVal( 'diff' );
1686
1687                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1688                         $t = wfMsg( 'deletethispage' );
1689
1690                         $s = $this->link(
1691                                 $this->mTitle,
1692                                 $t,
1693                                 array(),
1694                                 array( 'action' => 'delete' ),
1695                                 array( 'known', 'noclasses' )
1696                         );
1697                 } else {
1698                         $s = '';
1699                 }
1700
1701                 return $s;
1702         }
1703
1704         function protectThisPage() {
1705                 global $wgUser, $wgRequest;
1706
1707                 $diff = $wgRequest->getVal( 'diff' );
1708
1709                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1710                         if ( $this->mTitle->isProtected() ) {
1711                                 $text = wfMsg( 'unprotectthispage' );
1712                                 $query = array( 'action' => 'unprotect' );
1713                         } else {
1714                                 $text = wfMsg( 'protectthispage' );
1715                                 $query = array( 'action' => 'protect' );
1716                         }
1717
1718                         $s = $this->link(
1719                                 $this->mTitle,
1720                                 $text,
1721                                 array(),
1722                                 $query,
1723                                 array( 'known', 'noclasses' )
1724                         );
1725                 } else {
1726                         $s = '';
1727                 }
1728
1729                 return $s;
1730         }
1731
1732         function watchThisPage() {
1733                 global $wgOut;
1734                 ++$this->mWatchLinkNum;
1735
1736                 if ( $wgOut->isArticleRelated() ) {
1737                         if ( $this->mTitle->userIsWatching() ) {
1738                                 $text = wfMsg( 'unwatchthispage' );
1739                                 $query = array( 'action' => 'unwatch' );
1740                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1741                         } else {
1742                                 $text = wfMsg( 'watchthispage' );
1743                                 $query = array( 'action' => 'watch' );
1744                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1745                         }
1746
1747                         $s = $this->link(
1748                                 $this->mTitle,
1749                                 $text,
1750                                 array( 'id' => $id ),
1751                                 $query,
1752                                 array( 'known', 'noclasses' )
1753                         );
1754                 } else {
1755                         $s = wfMsg( 'notanarticle' );
1756                 }
1757
1758                 return $s;
1759         }
1760
1761         function moveThisPage() {
1762                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1763                         return $this->link(
1764                                 SpecialPage::getTitleFor( 'Movepage' ),
1765                                 wfMsg( 'movethispage' ),
1766                                 array(),
1767                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1768                                 array( 'known', 'noclasses' )
1769                         );
1770                 } else {
1771                         // no message if page is protected - would be redundant
1772                         return '';
1773                 }
1774         }
1775
1776         function historyLink() {
1777                 return $this->link(
1778                         $this->mTitle,
1779                         wfMsgHtml( 'history' ),
1780                         array( 'rel' => 'archives' ),
1781                         array( 'action' => 'history' )
1782                 );
1783         }
1784
1785         function whatLinksHere() {
1786                 return $this->link(
1787                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1788                         wfMsgHtml( 'whatlinkshere' ),
1789                         array(),
1790                         array(),
1791                         array( 'known', 'noclasses' )
1792                 );
1793         }
1794
1795         function userContribsLink() {
1796                 return $this->link(
1797                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1798                         wfMsgHtml( 'contributions' ),
1799                         array(),
1800                         array(),
1801                         array( 'known', 'noclasses' )
1802                 );
1803         }
1804
1805         function showEmailUser( $id ) {
1806                 global $wgUser;
1807                 $targetUser = User::newFromId( $id );
1808                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1809                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1810         }
1811
1812         function emailUserLink() {
1813                 return $this->link(
1814                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1815                         wfMsg( 'emailuser' ),
1816                         array(),
1817                         array(),
1818                         array( 'known', 'noclasses' )
1819                 );
1820         }
1821
1822         function watchPageLinksLink() {
1823                 global $wgOut;
1824
1825                 if ( !$wgOut->isArticleRelated() ) {
1826                         return '(' . wfMsg( 'notanarticle' ) . ')';
1827                 } else {
1828                         return $this->link(
1829                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1830                                 wfMsg( 'recentchangeslinked-toolbox' ),
1831                                 array(),
1832                                 array(),
1833                                 array( 'known', 'noclasses' )
1834                         );
1835                 }
1836         }
1837
1838         function trackbackLink() {
1839                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1840                         . wfMsg( 'trackbacklink' ) . '</a>';
1841         }
1842
1843         function otherLanguages() {
1844                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1845
1846                 if ( $wgHideInterlanguageLinks ) {
1847                         return '';
1848                 }
1849
1850                 $a = $wgOut->getLanguageLinks();
1851
1852                 if ( 0 == count( $a ) ) {
1853                         return '';
1854                 }
1855
1856                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1857                 $first = true;
1858
1859                 if ( $wgContLang->isRTL() ) {
1860                         $s .= '<span dir="LTR">';
1861                 }
1862
1863                 foreach ( $a as $l ) {
1864                         if ( !$first ) {
1865                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1866                         }
1867
1868                         $first = false;
1869
1870                         $nt = Title::newFromText( $l );
1871                         $url = $nt->escapeFullURL();
1872                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1873                         $title = htmlspecialchars( $nt->getText() );
1874
1875                         if ( $text == '' ) {
1876                                 $text = $l;
1877                         }
1878
1879                         $style = $this->getExternalLinkAttributes();
1880                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1881                 }
1882
1883                 if ( $wgContLang->isRTL() ) {
1884                         $s .= '</span>';
1885                 }
1886
1887                 return $s;
1888         }
1889
1890         function talkLink() {
1891                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1892                         # No discussion links for special pages
1893                         return '';
1894                 }
1895
1896                 $linkOptions = array();
1897
1898                 if ( $this->mTitle->isTalkPage() ) {
1899                         $link = $this->mTitle->getSubjectPage();
1900                         switch( $link->getNamespace() ) {
1901                                 case NS_MAIN:
1902                                         $text = wfMsg( 'articlepage' );
1903                                         break;
1904                                 case NS_USER:
1905                                         $text = wfMsg( 'userpage' );
1906                                         break;
1907                                 case NS_PROJECT:
1908                                         $text = wfMsg( 'projectpage' );
1909                                         break;
1910                                 case NS_FILE:
1911                                         $text = wfMsg( 'imagepage' );
1912                                         # Make link known if image exists, even if the desc. page doesn't.
1913                                         if ( wfFindFile( $link ) )
1914                                                 $linkOptions[] = 'known';
1915                                         break;
1916                                 case NS_MEDIAWIKI:
1917                                         $text = wfMsg( 'mediawikipage' );
1918                                         break;
1919                                 case NS_TEMPLATE:
1920                                         $text = wfMsg( 'templatepage' );
1921                                         break;
1922                                 case NS_HELP:
1923                                         $text = wfMsg( 'viewhelppage' );
1924                                         break;
1925                                 case NS_CATEGORY:
1926                                         $text = wfMsg( 'categorypage' );
1927                                         break;
1928                                 default:
1929                                         $text = wfMsg( 'articlepage' );
1930                         }
1931                 } else {
1932                         $link = $this->mTitle->getTalkPage();
1933                         $text = wfMsg( 'talkpage' );
1934                 }
1935
1936                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1937
1938                 return $s;
1939         }
1940
1941         function commentLink() {
1942                 global $wgOut;
1943
1944                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1945                         return '';
1946                 }
1947
1948                 # __NEWSECTIONLINK___ changes behaviour here
1949                 # If it is present, the link points to this page, otherwise
1950                 # it points to the talk page
1951                 if ( $this->mTitle->isTalkPage() ) {
1952                         $title = $this->mTitle;
1953                 } elseif ( $wgOut->showNewSectionLink() ) {
1954                         $title = $this->mTitle;
1955                 } else {
1956                         $title = $this->mTitle->getTalkPage();
1957                 }
1958
1959                 return $this->link(
1960                         $title,
1961                         wfMsg( 'postcomment' ),
1962                         array(),
1963                         array(
1964                                 'action' => 'edit',
1965                                 'section' => 'new'
1966                         ),
1967                         array( 'known', 'noclasses' )
1968                 );
1969         }
1970
1971         function getUploadLink() {
1972                 global $wgUploadNavigationUrl;
1973
1974                 if ( $wgUploadNavigationUrl ) {
1975                         # Using an empty class attribute to avoid automatic setting of "external" class
1976                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
1977                 } else {
1978                         return $this->link(
1979                                 SpecialPage::getTitleFor( 'Upload' ),
1980                                 wfMsgHtml( 'upload' ),
1981                                 array(),
1982                                 array(),
1983                                 array( 'known', 'noclasses' )
1984                         );
1985                 }
1986         }
1987
1988         /* these are used extensively in SkinTemplate, but also some other places */
1989         static function makeMainPageUrl( $urlaction = '' ) {
1990                 $title = Title::newMainPage();
1991                 self::checkTitle( $title, '' );
1992
1993                 return $title->getLocalURL( $urlaction );
1994         }
1995
1996         static function makeSpecialUrl( $name, $urlaction = '' ) {
1997                 $title = SpecialPage::getTitleFor( $name );
1998                 return $title->getLocalURL( $urlaction );
1999         }
2000
2001         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2002                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2003                 return $title->getLocalURL( $urlaction );
2004         }
2005
2006         static function makeI18nUrl( $name, $urlaction = '' ) {
2007                 $title = Title::newFromText( wfMsgForContent( $name ) );
2008                 self::checkTitle( $title, $name );
2009                 return $title->getLocalURL( $urlaction );
2010         }
2011
2012         static function makeUrl( $name, $urlaction = '' ) {
2013                 $title = Title::newFromText( $name );
2014                 self::checkTitle( $title, $name );
2015
2016                 return $title->getLocalURL( $urlaction );
2017         }
2018
2019         /**
2020          * If url string starts with http, consider as external URL, else
2021          * internal
2022          */
2023         static function makeInternalOrExternalUrl( $name ) {
2024                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2025                         return $name;
2026                 } else {
2027                         return self::makeUrl( $name );
2028                 }
2029         }
2030
2031         # this can be passed the NS number as defined in Language.php
2032         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2033                 $title = Title::makeTitleSafe( $namespace, $name );
2034                 self::checkTitle( $title, $name );
2035
2036                 return $title->getLocalURL( $urlaction );
2037         }
2038
2039         /* these return an array with the 'href' and boolean 'exists' */
2040         static function makeUrlDetails( $name, $urlaction = '' ) {
2041                 $title = Title::newFromText( $name );
2042                 self::checkTitle( $title, $name );
2043
2044                 return array(
2045                         'href' => $title->getLocalURL( $urlaction ),
2046                         'exists' => $title->getArticleID() != 0 ? true : false
2047                 );
2048         }
2049
2050         /**
2051          * Make URL details where the article exists (or at least it's convenient to think so)
2052          */
2053         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2054                 $title = Title::newFromText( $name );
2055                 self::checkTitle( $title, $name );
2056
2057                 return array(
2058                         'href' => $title->getLocalURL( $urlaction ),
2059                         'exists' => true
2060                 );
2061         }
2062
2063         # make sure we have some title to operate on
2064         static function checkTitle( &$title, $name ) {
2065                 if ( !is_object( $title ) ) {
2066                         $title = Title::newFromText( $name );
2067                         if ( !is_object( $title ) ) {
2068                                 $title = Title::newFromText( '--error: link target missing--' );
2069                         }
2070                 }
2071         }
2072
2073         /**
2074          * Build an array that represents the sidebar(s), the navigation bar among them
2075          *
2076          * @return array
2077          */
2078         function buildSidebar() {
2079                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2080                 global $wgLang;
2081                 wfProfileIn( __METHOD__ );
2082
2083                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2084
2085                 if ( $wgEnableSidebarCache ) {
2086                         $cachedsidebar = $parserMemc->get( $key );
2087                         if ( $cachedsidebar ) {
2088                                 wfProfileOut( __METHOD__ );
2089                                 return $cachedsidebar;
2090                         }
2091                 }
2092
2093                 $bar = array();
2094                 $this->addToSidebar( $bar, 'sidebar' );
2095
2096                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2097                 if ( $wgEnableSidebarCache ) {
2098                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2099                 }
2100
2101                 wfProfileOut( __METHOD__ );
2102                 return $bar;
2103         }
2104         /**
2105          * Add content from a sidebar system message
2106          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2107          *
2108          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2109          *
2110          * @param &$bar array
2111          * @param $message String
2112          */
2113         function addToSidebar( &$bar, $message ) {
2114                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2115         }
2116
2117         /**
2118          * Add content from plain text
2119          * @since 1.17
2120          * @param &$bar array
2121          * @param $text string
2122          */
2123         function addToSidebarPlain( &$bar, $text ) {
2124                 $lines = explode( "\n", $text );
2125                 $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.
2126
2127                 $heading = '';
2128
2129                 foreach ( $lines as $line ) {
2130                         if ( strpos( $line, '*' ) !== 0 ) {
2131                                 continue;
2132                         }
2133
2134                         if ( strpos( $line, '**' ) !== 0 ) {
2135                                 $heading = trim( $line, '* ' );
2136                                 if ( !array_key_exists( $heading, $bar ) ) {
2137                                         $bar[$heading] = array();
2138                                 }
2139                         } else {
2140                                 $line = trim( $line, '* ' );
2141
2142                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2143                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2144                                         $link = wfMsgForContent( $line[0] );
2145
2146                                         if ( $link == '-' ) {
2147                                                 continue;
2148                                         }
2149
2150                                         $text = wfMsgExt( $line[1], 'parsemag' );
2151
2152                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2153                                                 $text = $line[1];
2154                                         }
2155
2156                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2157                                                 $link = $line[0];
2158                                         }
2159
2160                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2161                                                 $href = $link;
2162                                         } else {
2163                                                 $title = Title::newFromText( $link );
2164
2165                                                 if ( $title ) {
2166                                                         $title = $title->fixSpecialName();
2167                                                         $href = $title->getLocalURL();
2168                                                 } else {
2169                                                         $href = 'INVALID-TITLE';
2170                                                 }
2171                                         }
2172
2173                                         $bar[$heading][] = array(
2174                                                 'text' => $text,
2175                                                 'href' => $href,
2176                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2177                                                 'active' => false
2178                                         );
2179                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2180                                         global $wgParser, $wgTitle;
2181
2182                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2183
2184                                         if ( is_null( $wgParser->mOptions ) ) {
2185                                                 $wgParser->mOptions = new ParserOptions();
2186                                         }
2187
2188                                         $wgParser->mOptions->setEditSection( false );
2189                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2190                                 } else {
2191                                         continue;
2192                                 }
2193                         }
2194                 }
2195
2196                 if ( count( $wikiBar ) > 0 ) {
2197                         $bar = array_merge( $bar, $wikiBar );
2198                 }
2199
2200                 return $bar;
2201         }
2202
2203         /**
2204          * Should we include common/wikiprintable.css?  Skins that have their own
2205          * print stylesheet should override this and return false.  (This is an
2206          * ugly hack to get Monobook to play nicely with
2207          * OutputPage::headElement().)
2208          *
2209          * @return bool
2210          */
2211         public function commonPrintStylesheet() {
2212                 return true;
2213         }
2214
2215         /**
2216          * Gets new talk page messages for the current user.
2217          * @return MediaWiki message or if no new talk page messages, nothing
2218          */
2219         function getNewtalks() {
2220                 global $wgUser, $wgOut;
2221
2222                 $newtalks = $wgUser->getNewMessageLinks();
2223                 $ntl = '';
2224
2225                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2226                         $userTitle = $this->mUser->getUserPage();
2227                         $userTalkTitle = $userTitle->getTalkPage();
2228
2229                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2230                                 $newMessagesLink = $this->link(
2231                                         $userTalkTitle,
2232                                         wfMsgHtml( 'newmessageslink' ),
2233                                         array(),
2234                                         array( 'redirect' => 'no' ),
2235                                         array( 'known', 'noclasses' )
2236                                 );
2237
2238                                 $newMessagesDiffLink = $this->link(
2239                                         $userTalkTitle,
2240                                         wfMsgHtml( 'newmessagesdifflink' ),
2241                                         array(),
2242                                         array( 'diff' => 'cur' ),
2243                                         array( 'known', 'noclasses' )
2244                                 );
2245
2246                                 $ntl = wfMsg(
2247                                         'youhavenewmessages',
2248                                         $newMessagesLink,
2249                                         $newMessagesDiffLink
2250                                 );
2251                                 # Disable Squid cache
2252                                 $wgOut->setSquidMaxage( 0 );
2253                         }
2254                 } elseif ( count( $newtalks ) ) {
2255                         // _>" " for BC <= 1.16
2256                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2257                         $msgs = array();
2258
2259                         foreach ( $newtalks as $newtalk ) {
2260                                 $msgs[] = Xml::element(
2261                                         'a',
2262                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2263                                 );
2264                         }
2265                         $parts = implode( $sep, $msgs );
2266                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2267                         $wgOut->setSquidMaxage( 0 );
2268                 }
2269
2270                 return $ntl;
2271         }
2272 }