includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30
  31         /** Constructor, call parent constructor */
  32         function __construct() {
  33                 parent::__construct();
  34         }
  35
  36         /**
  37          * Fetch the set of available skins.
  38          * @return array of strings
  39          */
  40         static function getSkinNames() {
  41                 global $wgValidSkinNames;
  42                 static $skinsInitialised = false;
  43
  44                 if ( !$skinsInitialised ) {
  45                         # Get a list of available skins
  46                         # Build using the regular expression '^(.*).php$'
  47                         # Array keys are all lower case, array value keep the case used by filename
  48                         #
  49                         wfProfileIn( __METHOD__ . '-init' );
  50
  51                         global $wgStyleDirectory;
  52
  53                         $skinDir = dir( $wgStyleDirectory );
  54
  55                         # while code from www.php.net
  56                         while ( false !== ( $file = $skinDir->read() ) ) {
  57                                 // Skip non-PHP files, hidden files, and '.dep' includes
  58                                 $matches = array();
  59
  60                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  61                                         $aSkin = $matches[1];
  62                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  63                                 }
  64                         }
  65                         $skinDir->close();
  66                         $skinsInitialised = true;
  67                         wfProfileOut( __METHOD__ . '-init' );
  68                 }
  69                 return $wgValidSkinNames;
  70         }
  71
  72         /**
  73          * Fetch the list of usable skins in regards to $wgSkipSkins.
  74          * Useful for Special:Preferences and other places where you
  75          * only want to show skins users _can_ use.
  76          * @return array of strings
  77          */
  78         public static function getUsableSkins() {
  79                 global $wgSkipSkins;
  80
  81                 $usableSkins = self::getSkinNames();
  82
  83                 foreach ( $wgSkipSkins as $skip ) {
  84                         unset( $usableSkins[$skip] );
  85                 }
  86
  87                 return $usableSkins;
  88         }
  89
  90         /**
  91          * Normalize a skin preference value to a form that can be loaded.
  92          * If a skin can't be found, it will fall back to the configured
  93          * default (or the old 'Classic' skin if that's broken).
  94          * @param $key String: 'monobook', 'standard', etc.
  95          * @return string
  96          */
  97         static function normalizeKey( $key ) {
  98                 global $wgDefaultSkin;
  99
 100                 $skinNames = Skin::getSkinNames();
 101
 102                 if ( $key == '' ) {
 103                         // Don't return the default immediately;
 104                         // in a misconfiguration we need to fall back.
 105                         $key = $wgDefaultSkin;
 106                 }
 107
 108                 if ( isset( $skinNames[$key] ) ) {
 109                         return $key;
 110                 }
 111
 112                 // Older versions of the software used a numeric setting
 113                 // in the user preferences.
 114                 $fallback = array(
 115                         0 => $wgDefaultSkin,
 116                         1 => 'nostalgia',
 117                         2 => 'cologneblue'
 118                 );
 119
 120                 if ( isset( $fallback[$key] ) ) {
 121                         $key = $fallback[$key];
 122                 }
 123
 124                 if ( isset( $skinNames[$key] ) ) {
 125                         return $key;
 126                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 127                         return $wgDefaultSkin;
 128                 } else {
 129                         return 'vector';
 130                 }
 131         }
 132
 133         /**
 134          * Factory method for loading a skin of a given type
 135          * @param $key String: 'monobook', 'standard', etc.
 136          * @return Skin
 137          */
 138         static function &newFromKey( $key ) {
 139                 global $wgStyleDirectory;
 140
 141                 $key = Skin::normalizeKey( $key );
 142
 143                 $skinNames = Skin::getSkinNames();
 144                 $skinName = $skinNames[$key];
 145                 $className = 'Skin' . ucfirst( $key );
 146
 147                 # Grab the skin class and initialise it.
 148                 if ( !class_exists( $className ) ) {
 149                         // Preload base classes to work around APC/PHP5 bug
 150                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 151
 152                         if ( file_exists( $deps ) ) {
 153                                 include_once( $deps );
 154                         }
 155                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 156
 157                         # Check if we got if not failback to default skin
 158                         if ( !class_exists( $className ) ) {
 159                                 # DO NOT die if the class isn't found. This breaks maintenance
 160                                 # scripts and can cause a user account to be unrecoverable
 161                                 # except by SQL manipulation if a previously valid skin name
 162                                 # is no longer valid.
 163                                 wfDebug( "Skin class does not exist: $className\n" );
 164                                 $className = 'SkinVector';
 165                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 166                         }
 167                 }
 168                 $skin = new $className;
 169                 return $skin;
 170         }
 171
 172         /** @return string path to the skin stylesheet */
 173         function getStylesheet() {
 174                 return 'common/wikistandard.css';
 175         }
 176
 177         /** @return string skin name */
 178         public function getSkinName() {
 179                 return $this->skinname;
 180         }
 181
 182         function qbSetting() {
 183                 global $wgOut, $wgUser;
 184
 185                 if ( $wgOut->isQuickbarSuppressed() ) {
 186                         return 0;
 187                 }
 188
 189                 $q = $wgUser->getOption( 'quickbar', 0 );
 190
 191                 return $q;
 192         }
 193
 194         function initPage( OutputPage $out ) {
 195                 global $wgFavicon, $wgAppleTouchIcon;
 196
 197                 wfProfileIn( __METHOD__ );
 198
 199                 # Generally the order of the favicon and apple-touch-icon links
 200                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 201                 # uses whichever one appears later in the HTML source. Make sure
 202                 # apple-touch-icon is specified first to avoid this.
 203                 if ( false !== $wgAppleTouchIcon ) {
 204                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 205                 }
 206
 207                 if ( false !== $wgFavicon ) {
 208                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 209                 }
 210
 211                 # OpenSearch description link
 212                 $out->addLink( array(
 213                         'rel' => 'search',
 214                         'type' => 'application/opensearchdescription+xml',
 215                         'href' => wfScript( 'opensearch_desc' ),
 216                         'title' => wfMsgForContent( 'opensearch-desc' ),
 217                 ) );
 218
 219                 $this->addMetadataLinks( $out );
 220
 221                 $this->mRevisionId = $out->mRevisionId;
 222
 223                 $this->preloadExistence();
 224
 225                 wfProfileOut( __METHOD__ );
 226         }
 227
 228         /**
 229          * Preload the existence of three commonly-requested pages in a single query
 230          */
 231         function preloadExistence() {
 232                 global $wgUser;
 233
 234                 // User/talk link
 235                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 236
 237                 // Other tab link
 238                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 239                         // nothing
 240                 } elseif ( $this->mTitle->isTalkPage() ) {
 241                         $titles[] = $this->mTitle->getSubjectPage();
 242                 } else {
 243                         $titles[] = $this->mTitle->getTalkPage();
 244                 }
 245
 246                 $lb = new LinkBatch( $titles );
 247                 $lb->setCaller( __METHOD__ );
 248                 $lb->execute();
 249         }
 250
 251         /**
 252          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 253          * output.
 254          * @param $out Object: instance of OutputPage
 255          */
 256         function addMetadataLinks( OutputPage $out ) {
 257                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 258                 global $wgRightsPage, $wgRightsUrl;
 259
 260                 if ( $out->isArticleRelated() ) {
 261                         # note: buggy CC software only reads first "meta" link
 262                         if ( $wgEnableCreativeCommonsRdf ) {
 263                                 $out->addMetadataLink( array(
 264                                         'title' => 'Creative Commons',
 265                                         'type' => 'application/rdf+xml',
 266                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 267                                 );
 268                         }
 269
 270                         if ( $wgEnableDublinCoreRdf ) {
 271                                 $out->addMetadataLink( array(
 272                                         'title' => 'Dublin Core',
 273                                         'type' => 'application/rdf+xml',
 274                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 275                                 );
 276                         }
 277                 }
 278                 $copyright = '';
 279                 if ( $wgRightsPage ) {
 280                         $copy = Title::newFromText( $wgRightsPage );
 281
 282                         if ( $copy ) {
 283                                 $copyright = $copy->getLocalURL();
 284                         }
 285                 }
 286
 287                 if ( !$copyright && $wgRightsUrl ) {
 288                         $copyright = $wgRightsUrl;
 289                 }
 290
 291                 if ( $copyright ) {
 292                         $out->addLink( array(
 293                                 'rel' => 'copyright',
 294                                 'href' => $copyright )
 295                         );
 296                 }
 297         }
 298
 299         /**
 300          * Set some local variables
 301          */
 302         protected function setMembers() {
 303                 global $wgUser;
 304                 $this->mUser = $wgUser;
 305                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 306                 $this->usercss = false;
 307         }
 308
 309         /**
 310          * Set the title
 311          * @param $t Title object to use
 312          */
 313         public function setTitle( $t ) {
 314                 $this->mTitle = $t;
 315         }
 316
 317         /** Get the title */
 318         public function getTitle() {
 319                 return $this->mTitle;
 320         }
 321
 322         /**
 323          * Outputs the HTML generated by other functions.
 324          * @param $out Object: instance of OutputPage
 325          */
 326         function outputPage( OutputPage $out ) {
 327                 global $wgDebugComments;
 328                 wfProfileIn( __METHOD__ );
 329
 330                 $this->setMembers();
 331                 $this->initPage( $out );
 332
 333                 // See self::afterContentHook() for documentation
 334                 $afterContent = $this->afterContentHook();
 335
 336                 $out->out( $out->headElement( $this ) );
 337
 338                 if ( $wgDebugComments ) {
 339                         $out->out( "<!-- Wiki debugging output:\n" .
 340                           $out->mDebugtext . "-->\n" );
 341                 }
 342
 343                 $out->out( $this->beforeContent() );
 344
 345                 $out->out( $out->mBodytext . "\n" );
 346
 347                 $out->out( $this->afterContent() );
 348
 349                 $out->out( $afterContent );
 350
 351                 $out->out( $this->bottomScripts( $out ) );
 352
 353                 $out->out( wfReportTime() );
 354
 355                 $out->out( "\n</body></html>" );
 356                 wfProfileOut( __METHOD__ );
 357         }
 358
 359         static function makeVariablesScript( $data ) {
 360                 if ( $data ) {
 361                         return Html::inlineScript(
 362                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 363                         );
 364                 } else {
 365                         return '';
 366                 }
 367         }
 368
 369         /**
 370          * Make a <script> tag containing global variables
 371          * @param $skinName string Name of the skin
 372          * The odd calling convention is for backwards compatibility
 373          * @todo FIXME: Make this not depend on $wgTitle!
 374          *
 375          * Do not add things here which can be evaluated in ResourceLoaderStartupScript - in other words, without state.
 376          * You will only be adding bloat to the page and causing page caches to have to be purged on configuration changes.
 377          */
 378         static function makeGlobalVariablesScript( $skinName ) {
 379                 global $wgTitle, $wgUser, $wgRequest, $wgArticle, $wgOut, $wgRestrictionTypes, $wgUseAjax, $wgEnableMWSuggest;
 380
 381                 $ns = $wgTitle->getNamespace();
 382                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 383                 $vars = array(
 384                         'wgCanonicalNamespace' => $nsname,
 385                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 386                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 387                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 388                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 389                         'wgTitle' => $wgTitle->getText(),
 390                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 391                         'wgArticleId' => $wgTitle->getArticleId(),
 392                         'wgIsArticle' => $wgOut->isArticle(),
 393                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 394                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 395                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 396                         'wgCategories' => $wgOut->getCategories(),
 397                 );
 398                 foreach ( $wgRestrictionTypes as $type ) {
 399                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 400                 }
 401                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 402                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 403                 }
 404
 405                 // Allow extensions to add their custom variables to the global JS variables
 406                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 407
 408                 return self::makeVariablesScript( $vars );
 409         }
 410
 411         /**
 412          * To make it harder for someone to slip a user a fake
 413          * user-JavaScript or user-CSS preview, a random token
 414          * is associated with the login session. If it's not
 415          * passed back with the preview request, we won't render
 416          * the code.
 417          *
 418          * @param $action String: 'edit', 'submit' etc.
 419          * @return bool
 420          */
 421         public function userCanPreview( $action ) {
 422                 global $wgRequest, $wgUser;
 423
 424                 if ( $action != 'submit' ) {
 425                         return false;
 426                 }
 427                 if ( !$wgRequest->wasPosted() ) {
 428                         return false;
 429                 }
 430                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 431                         return false;
 432                 }
 433                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 434                         return false;
 435                 }
 436
 437                 return $wgUser->matchEditToken(
 438                         $wgRequest->getVal( 'wpEditToken' ) );
 439         }
 440
 441         /**
 442          * Generated JavaScript action=raw&gen=js
 443          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 444          * nated together.  For some bizarre reason, it does *not* return any
 445          * custom user JS from subpages.  Huh?
 446          *
 447          * There's absolutely no reason to have separate Monobook/Common JSes.
 448          * Any JS that cares can just check the skin variable generated at the
 449          * top.  For now Monobook.js will be maintained, but it should be consi-
 450          * dered deprecated.
 451          *
 452          * @param $skinName String: If set, overrides the skin name
 453          * @return string
 454          */
 455         public function generateUserJs( $skinName = null ) {
 456
 457                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 458
 459                 return '';
 460         }
 461
 462         /**
 463          * Generate user stylesheet for action=raw&gen=css
 464          */
 465         public function generateUserStylesheet() {
 466
 467                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 468
 469                 return '';
 470         }
 471
 472         /**
 473          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 474          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 475          */
 476         protected function reallyGenerateUserStylesheet() {
 477
 478                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 479
 480                 return '';
 481         }
 482
 483         /**
 484          * @private
 485          */
 486         function setupUserCss( OutputPage $out ) {
 487                 global $wgRequest;
 488                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs, $wgSquidMaxage;
 489
 490                 wfProfileIn( __METHOD__ );
 491
 492                 $this->setupSkinUserCss( $out );
 493
 494                 $siteargs = array(
 495                         'action' => 'raw',
 496                         'maxage' => $wgSquidMaxage,
 497                 );
 498
 499                 // Add any extension CSS
 500                 foreach ( $out->getExtStyle() as $url ) {
 501                         $out->addStyle( $url );
 502                 }
 503
 504                 // Per-site custom styles
 505                 if ( $wgUseSiteCss ) {
 506                         $out->addModuleStyles( 'site' );
 507                 }
 508
 509                 // Per-user custom styles
 510                 if ( $wgAllowUserCss ) {
 511                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 512                                 // @FIXME: properly escape the cdata!
 513                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 514                         } else {
 515                                 $out->addModuleStyles( 'user' );
 516                         }
 517                 }
 518
 519                 // Per-user preference styles
 520                 if ( $wgAllowUserCssPrefs ) {
 521                         $out->addModuleStyles( 'user.options' );
 522                 }
 523
 524                 wfProfileOut( __METHOD__ );
 525         }
 526
 527         /**
 528          * Get the query to generate a dynamic stylesheet
 529          *
 530          * @return array
 531          */
 532         public static function getDynamicStylesheetQuery() {
 533                 global $wgSquidMaxage;
 534
 535                 return array(
 536                                 'action' => 'raw',
 537                                 'maxage' => $wgSquidMaxage,
 538                                 'usemsgcache' => 'yes',
 539                                 'ctype' => 'text/css',
 540                                 'smaxage' => $wgSquidMaxage,
 541                         );
 542         }
 543
 544         /**
 545          * Add skin specific stylesheets
 546          * @param $out OutputPage
 547          */
 548         function setupSkinUserCss( OutputPage $out ) {
 549                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 550                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 551                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 552                 $out->addStyle( $this->getStylesheet() );
 553                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 554         }
 555
 556         function getPageClasses( $title ) {
 557                 $numeric = 'ns-' . $title->getNamespace();
 558
 559                 if ( $title->getNamespace() == NS_SPECIAL ) {
 560                         $type = 'ns-special';
 561                 } elseif ( $title->isTalkPage() ) {
 562                         $type = 'ns-talk';
 563                 } else {
 564                         $type = 'ns-subject';
 565                 }
 566
 567                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 568
 569                 return "$numeric $type $name";
 570         }
 571
 572         /**
 573          * This will be called by OutputPage::headElement when it is creating the
 574          * <body> tag, skins can override it if they have a need to add in any
 575          * body attributes or classes of their own.
 576          */
 577         function addToBodyAttributes( $out, &$bodyAttrs ) {
 578                 // does nothing by default
 579         }
 580
 581         /**
 582          * URL to the logo
 583          */
 584         function getLogo() {
 585                 global $wgLogo;
 586                 return $wgLogo;
 587         }
 588
 589         /**
 590          * This will be called immediately after the <body> tag.  Split into
 591          * two functions to make it easier to subclass.
 592          */
 593         function beforeContent() {
 594                 return $this->doBeforeContent();
 595         }
 596
 597         function doBeforeContent() {
 598                 global $wgContLang;
 599                 wfProfileIn( __METHOD__ );
 600
 601                 $s = '';
 602                 $qb = $this->qbSetting();
 603
 604                 $langlinks = $this->otherLanguages();
 605                 if ( $langlinks ) {
 606                         $rows = 2;
 607                         $borderhack = '';
 608                 } else {
 609                         $rows = 1;
 610                         $langlinks = false;
 611                         $borderhack = 'class="top"';
 612                 }
 613
 614                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 615                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 616
 617                 $shove = ( $qb != 0 );
 618                 $left = ( $qb == 1 || $qb == 3 );
 619
 620                 if ( $wgContLang->isRTL() ) {
 621                         $left = !$left;
 622                 }
 623
 624                 if ( !$shove ) {
 625                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 626                                 $this->logoText() . '</td>';
 627                 } elseif ( $left ) {
 628                         $s .= $this->getQuickbarCompensator( $rows );
 629                 }
 630
 631                 $l = $wgContLang->alignStart();
 632                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 633
 634                 $s .= $this->topLinks();
 635                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 636
 637                 $r = $wgContLang->alignEnd();
 638                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 639                 $s .= $this->nameAndLogin();
 640                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 641
 642                 if ( $langlinks ) {
 643                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 644                 }
 645
 646                 if ( $shove && !$left ) { # Right
 647                         $s .= $this->getQuickbarCompensator( $rows );
 648                 }
 649
 650                 $s .= "</tr>\n</table>\n</div>\n";
 651                 $s .= "\n<div id='article'>\n";
 652
 653                 $notice = wfGetSiteNotice();
 654
 655                 if ( $notice ) {
 656                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 657                 }
 658                 $s .= $this->pageTitle();
 659                 $s .= $this->pageSubtitle();
 660                 $s .= $this->getCategories();
 661
 662                 wfProfileOut( __METHOD__ );
 663                 return $s;
 664         }
 665
 666         function getCategoryLinks() {
 667                 global $wgOut, $wgUseCategoryBrowser;
 668                 global $wgContLang, $wgUser;
 669
 670                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 671                         return '';
 672                 }
 673
 674                 # Separator
 675                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 676
 677                 // Use Unicode bidi embedding override characters,
 678                 // to make sure links don't smash each other up in ugly ways.
 679                 $dir = $wgContLang->getDir();
 680                 $embed = "<span dir='$dir'>";
 681                 $pop = '</span>';
 682
 683                 $allCats = $wgOut->getCategoryLinks();
 684                 $s = '';
 685                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 686
 687                 if ( !empty( $allCats['normal'] ) ) {
 688                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 689
 690                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 691                         $s .= '<div id="mw-normal-catlinks">' .
 692                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 693                                 . $colon . $t . '</div>';
 694                 }
 695
 696                 # Hidden categories
 697                 if ( isset( $allCats['hidden'] ) ) {
 698                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 699                                 $class = 'mw-hidden-cats-user-shown';
 700                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 701                                 $class = 'mw-hidden-cats-ns-shown';
 702                         } else {
 703                                 $class = 'mw-hidden-cats-hidden';
 704                         }
 705
 706                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 707                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 708                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 709                                 '</div>';
 710                 }
 711
 712                 # optional 'dmoz-like' category browser. Will be shown under the list
 713                 # of categories an article belong to
 714                 if ( $wgUseCategoryBrowser ) {
 715                         $s .= '<br /><hr />';
 716
 717                         # get a big array of the parents tree
 718                         $parenttree = $this->mTitle->getParentCategoryTree();
 719                         # Skin object passed by reference cause it can not be
 720                         # accessed under the method subfunction drawCategoryBrowser
 721                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 722                         # Clean out bogus first entry and sort them
 723                         unset( $tempout[0] );
 724                         asort( $tempout );
 725                         # Output one per line
 726                         $s .= implode( "<br />\n", $tempout );
 727                 }
 728
 729                 return $s;
 730         }
 731
 732         /**
 733          * Render the array as a serie of links.
 734          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 735          * @param &skin Object: skin passed by reference
 736          * @return String separated by &gt;, terminate with "\n"
 737          */
 738         function drawCategoryBrowser( $tree, &$skin ) {
 739                 $return = '';
 740
 741                 foreach ( $tree as $element => $parent ) {
 742                         if ( empty( $parent ) ) {
 743                                 # element start a new list
 744                                 $return .= "\n";
 745                         } else {
 746                                 # grab the others elements
 747                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 748                         }
 749
 750                         # add our current element to the list
 751                         $eltitle = Title::newFromText( $element );
 752                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 753                 }
 754
 755                 return $return;
 756         }
 757
 758         function getCategories() {
 759                 $catlinks = $this->getCategoryLinks();
 760
 761                 $classes = 'catlinks';
 762
 763                 global $wgOut, $wgUser;
 764
 765                 // Check what we're showing
 766                 $allCats = $wgOut->getCategoryLinks();
 767                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 768                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 769
 770                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 771                         $classes .= ' catlinks-allhidden';
 772                 }
 773
 774                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 775         }
 776
 777         function getQuickbarCompensator( $rows = 1 ) {
 778                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 779         }
 780
 781         /**
 782          * This runs a hook to allow extensions placing their stuff after content
 783          * and article metadata (e.g. categories).
 784          * Note: This function has nothing to do with afterContent().
 785          *
 786          * This hook is placed here in order to allow using the same hook for all
 787          * skins, both the SkinTemplate based ones and the older ones, which directly
 788          * use this class to get their data.
 789          *
 790          * The output of this function gets processed in SkinTemplate::outputPage() for
 791          * the SkinTemplate based skins, all other skins should directly echo it.
 792          *
 793          * Returns an empty string by default, if not changed by any hook function.
 794          */
 795         protected function afterContentHook() {
 796                 $data = '';
 797
 798                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 799                         // adding just some spaces shouldn't toggle the output
 800                         // of the whole <div/>, so we use trim() here
 801                         if ( trim( $data ) != '' ) {
 802                                 // Doing this here instead of in the skins to
 803                                 // ensure that the div has the same ID in all
 804                                 // skins
 805                                 $data = "<div id='mw-data-after-content'>\n" .
 806                                         "\t$data\n" .
 807                                         "</div>\n";
 808                         }
 809                 } else {
 810                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 811                 }
 812
 813                 return $data;
 814         }
 815
 816         /**
 817          * Generate debug data HTML for displaying at the bottom of the main content
 818          * area.
 819          * @return String HTML containing debug data, if enabled (otherwise empty).
 820          */
 821         protected function generateDebugHTML() {
 822                 global $wgShowDebug, $wgOut;
 823
 824                 if ( $wgShowDebug ) {
 825                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 826                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 827                                 $listInternals . "</ul>\n";
 828                 }
 829
 830                 return '';
 831         }
 832
 833         private function formatDebugHTML( $debugText ) {
 834                 $lines = explode( "\n", $debugText );
 835                 $curIdent = 0;
 836                 $ret = '<li>';
 837
 838                 foreach ( $lines as $line ) {
 839                         $display = ltrim( $line );
 840                         $ident = strlen( $line ) - strlen( $display );
 841                         $diff = $ident - $curIdent;
 842
 843                         if ( $display == '' ) {
 844                                 $display = "\xc2\xa0";
 845                         }
 846
 847                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 848                                 $ident = $curIdent;
 849                                 $diff = 0;
 850                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 851                         } else {
 852                                 $display = htmlspecialchars( $display );
 853                         }
 854
 855                         if ( $diff < 0 ) {
 856                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 857                         } elseif ( $diff == 0 ) {
 858                                 $ret .= "</li><li>\n";
 859                         } else {
 860                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 861                         }
 862                         $ret .= $display . "\n";
 863
 864                         $curIdent = $ident;
 865                 }
 866
 867                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 868
 869                 return $ret;
 870         }
 871
 872         /**
 873          * This gets called shortly before the </body> tag.
 874          * @return String HTML to be put before </body>
 875          */
 876         function afterContent() {
 877                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 878                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 879         }
 880
 881         /**
 882          * This gets called shortly before the </body> tag.
 883          * @param $out OutputPage object
 884          * @return String HTML-wrapped JS code to be put before </body>
 885          */
 886         function bottomScripts( $out ) {
 887                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 888                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 889
 890                 return $bottomScriptText;
 891         }
 892
 893         /** @return string Retrievied from HTML text */
 894         function printSource() {
 895                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 896                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 897         }
 898
 899         function printFooter() {
 900                 return "<p>" .  $this->printSource() .
 901                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 902         }
 903
 904         /** overloaded by derived classes */
 905         function doAfterContent() {
 906                 return '</div></div>';
 907         }
 908
 909         function pageTitleLinks() {
 910                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 911
 912                 $oldid = $wgRequest->getVal( 'oldid' );
 913                 $diff = $wgRequest->getVal( 'diff' );
 914                 $action = $wgRequest->getText( 'action' );
 915
 916                 $s[] = $this->printableLink();
 917                 $disclaimer = $this->disclaimerLink(); # may be empty
 918
 919                 if ( $disclaimer ) {
 920                         $s[] = $disclaimer;
 921                 }
 922
 923                 $privacy = $this->privacyLink(); # may be empty too
 924
 925                 if ( $privacy ) {
 926                         $s[] = $privacy;
 927                 }
 928
 929                 if ( $wgOut->isArticleRelated() ) {
 930                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
 931                                 $name = $this->mTitle->getDBkey();
 932                                 $image = wfFindFile( $this->mTitle );
 933
 934                                 if ( $image ) {
 935                                         $link = htmlspecialchars( $image->getURL() );
 936                                         $style = $this->getInternalLinkAttributes( $link, $name );
 937                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 938                                 }
 939                         }
 940                 }
 941
 942                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 943                         $s[] .= $this->link(
 944                                         $this->mTitle,
 945                                         wfMsg( 'currentrev' ),
 946                                         array(),
 947                                         array(),
 948                                         array( 'known', 'noclasses' )
 949                         );
 950                 }
 951
 952                 if ( $wgUser->getNewtalk() ) {
 953                         # do not show "You have new messages" text when we are viewing our
 954                         # own talk page
 955                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
 956                                 $tl = $this->link(
 957                                         $wgUser->getTalkPage(),
 958                                         wfMsgHtml( 'newmessageslink' ),
 959                                         array(),
 960                                         array( 'redirect' => 'no' ),
 961                                         array( 'known', 'noclasses' )
 962                                 );
 963
 964                                 $dl = $this->link(
 965                                         $wgUser->getTalkPage(),
 966                                         wfMsgHtml( 'newmessagesdifflink' ),
 967                                         array(),
 968                                         array( 'diff' => 'cur' ),
 969                                         array( 'known', 'noclasses' )
 970                                 );
 971                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 972                                 # disable caching
 973                                 $wgOut->setSquidMaxage( 0 );
 974                                 $wgOut->enableClientCache( false );
 975                         }
 976                 }
 977
 978                 $undelete = $this->getUndeleteLink();
 979
 980                 if ( !empty( $undelete ) ) {
 981                         $s[] = $undelete;
 982                 }
 983
 984                 return $wgLang->pipeList( $s );
 985         }
 986
 987         function getUndeleteLink() {
 988                 global $wgUser, $wgLang, $wgRequest;
 989
 990                 $action = $wgRequest->getVal( 'action', 'view' );
 991
 992                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
 993                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
 994                         $n = $this->mTitle->isDeleted();
 995
 996                         if ( $n ) {
 997                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
 998                                         $msg = 'thisisdeleted';
 999                                 } else {
1000                                         $msg = 'viewdeleted';
1001                                 }
1002
1003                                 return wfMsg(
1004                                         $msg,
1005                                         $this->link(
1006                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1007                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1008                                                 array(),
1009                                                 array(),
1010                                                 array( 'known', 'noclasses' )
1011                                         )
1012                                 );
1013                         }
1014                 }
1015
1016                 return '';
1017         }
1018
1019         function printableLink() {
1020                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1021
1022                 $s = array();
1023
1024                 if ( !$wgOut->isPrintable() ) {
1025                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1026                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1027                 }
1028
1029                 if ( $wgOut->isSyndicated() ) {
1030                         foreach ( $wgFeedClasses as $format => $class ) {
1031                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1032                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1033                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1034                         }
1035                 }
1036                 return $wgLang->pipeList( $s );
1037         }
1038
1039         /**
1040          * Gets the h1 element with the page title.
1041          * @return string
1042          */
1043         function pageTitle() {
1044                 global $wgOut;
1045                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1046                 return $s;
1047         }
1048
1049         function pageSubtitle() {
1050                 global $wgOut;
1051
1052                 $sub = $wgOut->getSubtitle();
1053
1054                 if ( $sub == '' ) {
1055                         global $wgExtraSubtitle;
1056                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1057                 }
1058
1059                 $subpages = $this->subPageSubtitle();
1060                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1061                 $s = "<p class='subtitle'>{$sub}</p>\n";
1062
1063                 return $s;
1064         }
1065
1066         function subPageSubtitle() {
1067                 $subpages = '';
1068
1069                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this ) ) ) {
1070                         return $subpages;
1071                 }
1072
1073                 global $wgOut;
1074
1075                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1076                         $ptext = $this->mTitle->getPrefixedText();
1077                         if ( preg_match( '/\//', $ptext ) ) {
1078                                 $links = explode( '/', $ptext );
1079                                 array_pop( $links );
1080                                 $c = 0;
1081                                 $growinglink = '';
1082                                 $display = '';
1083
1084                                 foreach ( $links as $link ) {
1085                                         $growinglink .= $link;
1086                                         $display .= $link;
1087                                         $linkObj = Title::newFromText( $growinglink );
1088
1089                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1090                                                 $getlink = $this->link(
1091                                                         $linkObj,
1092                                                         htmlspecialchars( $display ),
1093                                                         array(),
1094                                                         array(),
1095                                                         array( 'known', 'noclasses' )
1096                                                 );
1097
1098                                                 $c++;
1099
1100                                                 if ( $c > 1 ) {
1101                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1102                                                 } else  {
1103                                                         $subpages .= '&lt; ';
1104                                                 }
1105
1106                                                 $subpages .= $getlink;
1107                                                 $display = '';
1108                                         } else {
1109                                                 $display .= '/';
1110                                         }
1111                                         $growinglink .= '/';
1112                                 }
1113                         }
1114                 }
1115
1116                 return $subpages;
1117         }
1118
1119         /**
1120          * Returns true if the IP should be shown in the header
1121          */
1122         function showIPinHeader() {
1123                 global $wgShowIPinHeader;
1124                 return $wgShowIPinHeader && session_id() != '';
1125         }
1126
1127         function nameAndLogin() {
1128                 global $wgUser, $wgLang, $wgContLang;
1129
1130                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1131
1132                 $ret = '';
1133
1134                 if ( $wgUser->isAnon() ) {
1135                         if ( $this->showIPinHeader() ) {
1136                                 $name = wfGetIP();
1137
1138                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1139                                         $wgLang->getNsText( NS_TALK ) );
1140
1141                                 $ret .= "$name ($talkLink)";
1142                         } else {
1143                                 $ret .= wfMsg( 'notloggedin' );
1144                         }
1145
1146                         $returnTo = $this->mTitle->getPrefixedDBkey();
1147                         $query = array();
1148
1149                         if ( $logoutPage != $returnTo ) {
1150                                 $query['returnto'] = $returnTo;
1151                         }
1152
1153                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1154                                 ? 'nav-login-createaccount'
1155                                 : 'login';
1156                         $ret .= "\n<br />" . $this->link(
1157                                 SpecialPage::getTitleFor( 'Userlogin' ),
1158                                 wfMsg( $loginlink ), array(), $query
1159                         );
1160                 } else {
1161                         $returnTo = $this->mTitle->getPrefixedDBkey();
1162                         $talkLink = $this->link( $wgUser->getTalkPage(),
1163                                 $wgLang->getNsText( NS_TALK ) );
1164
1165                         $ret .= $this->link( $wgUser->getUserPage(),
1166                                 htmlspecialchars( $wgUser->getName() ) );
1167                         $ret .= " ($talkLink)<br />";
1168                         $ret .= $wgLang->pipeList( array(
1169                                 $this->link(
1170                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1171                                         array(), array( 'returnto' => $returnTo )
1172                                 ),
1173                                 $this->specialLink( 'Preferences' ),
1174                         ) );
1175                 }
1176
1177                 $ret = $wgLang->pipeList( array(
1178                         $ret,
1179                         $this->link(
1180                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1181                                 wfMsg( 'help' )
1182                         ),
1183                 ) );
1184
1185                 return $ret;
1186         }
1187
1188         function getSearchLink() {
1189                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1190                 return $searchPage->getLocalURL();
1191         }
1192
1193         function escapeSearchLink() {
1194                 return htmlspecialchars( $this->getSearchLink() );
1195         }
1196
1197         function searchForm() {
1198                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1199
1200                 $search = $wgRequest->getText( 'search' );
1201
1202                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1203                   . $this->escapeSearchLink() . "\">\n"
1204                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1205                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1206                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1207
1208                 if ( $wgUseTwoButtonsSearchForm ) {
1209                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1210                 } else {
1211                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1212                 }
1213
1214                 $s .= '</form>';
1215
1216                 // Ensure unique id's for search boxes made after the first
1217                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1218
1219                 return $s;
1220         }
1221
1222         function topLinks() {
1223                 global $wgOut;
1224
1225                 $s = array(
1226                         $this->mainPageLink(),
1227                         $this->specialLink( 'Recentchanges' )
1228                 );
1229
1230                 if ( $wgOut->isArticleRelated() ) {
1231                         $s[] = $this->editThisPage();
1232                         $s[] = $this->historyLink();
1233                 }
1234
1235                 # Many people don't like this dropdown box
1236                 # $s[] = $this->specialPagesList();
1237
1238                 if ( $this->variantLinks() ) {
1239                         $s[] = $this->variantLinks();
1240                 }
1241
1242                 if ( $this->extensionTabLinks() ) {
1243                         $s[] = $this->extensionTabLinks();
1244                 }
1245
1246                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1247                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1248         }
1249
1250         /**
1251          * Compatibility for extensions adding functionality through tabs.
1252          * Eventually these old skins should be replaced with SkinTemplate-based
1253          * versions, sigh...
1254          * @return string
1255          */
1256         function extensionTabLinks() {
1257                 $tabs = array();
1258                 $out = '';
1259                 $s = array();
1260                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1261                 foreach ( $tabs as $tab ) {
1262                         $s[] = Xml::element( 'a',
1263                                 array( 'href' => $tab['href'] ),
1264                                 $tab['text'] );
1265                 }
1266
1267                 if ( count( $s ) ) {
1268                         global $wgLang;
1269
1270                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1271                         $out .= $wgLang->pipeList( $s );
1272                 }
1273
1274                 return $out;
1275         }
1276
1277         /**
1278          * Language/charset variant links for classic-style skins
1279          * @return string
1280          */
1281         function variantLinks() {
1282                 $s = '';
1283
1284                 /* show links to different language variants */
1285                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1286
1287                 $variants = $wgContLang->getVariants();
1288
1289                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1290                         foreach ( $variants as $code ) {
1291                                 $varname = $wgContLang->getVariantname( $code );
1292
1293                                 if ( $varname == 'disable' ) {
1294                                         continue;
1295                                 }
1296                                 $s = $wgLang->pipeList( array(
1297                                         $s,
1298                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1299                                 ) );
1300                         }
1301                 }
1302
1303                 return $s;
1304         }
1305
1306         function bottomLinks() {
1307                 global $wgOut, $wgUser, $wgUseTrackbacks;
1308                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1309
1310                 $s = '';
1311                 if ( $wgOut->isArticleRelated() ) {
1312                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1313
1314                         if ( $wgUser->isLoggedIn() ) {
1315                                 $element[] = $this->watchThisPage();
1316                         }
1317
1318                         $element[] = $this->talkLink();
1319                         $element[] = $this->historyLink();
1320                         $element[] = $this->whatLinksHere();
1321                         $element[] = $this->watchPageLinksLink();
1322
1323                         if ( $wgUseTrackbacks ) {
1324                                 $element[] = $this->trackbackLink();
1325                         }
1326
1327                         if (
1328                                 $this->mTitle->getNamespace() == NS_USER ||
1329                                 $this->mTitle->getNamespace() == NS_USER_TALK
1330                         ) {
1331                                 $id = User::idFromName( $this->mTitle->getText() );
1332                                 $ip = User::isIP( $this->mTitle->getText() );
1333
1334                                 # Both anons and non-anons have contributions list
1335                                 if ( $id || $ip ) {
1336                                         $element[] = $this->userContribsLink();
1337                                 }
1338
1339                                 if ( $this->showEmailUser( $id ) ) {
1340                                         $element[] = $this->emailUserLink();
1341                                 }
1342                         }
1343
1344                         $s = implode( $element, $sep );
1345
1346                         if ( $this->mTitle->getArticleId() ) {
1347                                 $s .= "\n<br />";
1348
1349                                 // Delete/protect/move links for privileged users
1350                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1351                                         $s .= $this->deleteThisPage();
1352                                 }
1353
1354                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1355                                         $s .= $sep . $this->protectThisPage();
1356                                 }
1357
1358                                 if ( $wgUser->isAllowed( 'move' ) ) {
1359                                         $s .= $sep . $this->moveThisPage();
1360                                 }
1361                         }
1362
1363                         $s .= "<br />\n" . $this->otherLanguages();
1364                 }
1365
1366                 return $s;
1367         }
1368
1369         function pageStats() {
1370                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1371                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1372
1373                 $oldid = $wgRequest->getVal( 'oldid' );
1374                 $diff = $wgRequest->getVal( 'diff' );
1375
1376                 if ( !$wgOut->isArticle() ) {
1377                         return '';
1378                 }
1379
1380                 if ( !$wgArticle instanceof Article ) {
1381                         return '';
1382                 }
1383
1384                 if ( isset( $oldid ) || isset( $diff ) ) {
1385                         return '';
1386                 }
1387
1388                 if ( 0 == $wgArticle->getID() ) {
1389                         return '';
1390                 }
1391
1392                 $s = '';
1393
1394                 if ( !$wgDisableCounters ) {
1395                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1396
1397                         if ( $count ) {
1398                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1399                         }
1400                 }
1401
1402                 if ( $wgMaxCredits != 0 ) {
1403                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1404                 } else {
1405                         $s .= $this->lastModified();
1406                 }
1407
1408                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1409                         $dbr = wfGetDB( DB_SLAVE );
1410                         $res = $dbr->select(
1411                                 'watchlist',
1412                                 array( 'COUNT(*) AS n' ),
1413                                 array(
1414                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1415                                         'wl_namespace' => $this->mTitle->getNamespace()
1416                                 ),
1417                                 __METHOD__
1418                         );
1419                         $x = $dbr->fetchObject( $res );
1420
1421                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1422                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1423                         );
1424                 }
1425
1426                 return $s . ' ' .  $this->getCopyright();
1427         }
1428
1429         function getCopyright( $type = 'detect' ) {
1430                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1431
1432                 if ( $type == 'detect' ) {
1433                         $diff = $wgRequest->getVal( 'diff' );
1434                         $isCur = $wgArticle && $wgArticle->isCurrent();
1435
1436                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1437                                 $type = 'history';
1438                         } else {
1439                                 $type = 'normal';
1440                         }
1441                 }
1442
1443                 if ( $type == 'history' ) {
1444                         $msg = 'history_copyright';
1445                 } else {
1446                         $msg = 'copyright';
1447                 }
1448
1449                 $out = '';
1450
1451                 if ( $wgRightsPage ) {
1452                         $title = Title::newFromText( $wgRightsPage );
1453                         $link = $this->linkKnown( $title, $wgRightsText );
1454                 } elseif ( $wgRightsUrl ) {
1455                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1456                 } elseif ( $wgRightsText ) {
1457                         $link = $wgRightsText;
1458                 } else {
1459                         # Give up now
1460                         return $out;
1461                 }
1462
1463                 // Allow for site and per-namespace customization of copyright notice.
1464                 $forContent = true;
1465
1466                 if ( isset( $wgArticle ) ) {
1467                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1468                 }
1469
1470                 if ( $forContent ) {
1471                         $out .= wfMsgForContent( $msg, $link );
1472                 } else {
1473                         $out .= wfMsg( $msg, $link );
1474                 }
1475
1476                 return $out;
1477         }
1478
1479         function getCopyrightIcon() {
1480                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1481
1482                 $out = '';
1483
1484                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1485                         $out = $wgCopyrightIcon;
1486                 } elseif ( $wgRightsIcon ) {
1487                         $icon = htmlspecialchars( $wgRightsIcon );
1488
1489                         if ( $wgRightsUrl ) {
1490                                 $url = htmlspecialchars( $wgRightsUrl );
1491                                 $out .= '<a href="' . $url . '">';
1492                         }
1493
1494                         $text = htmlspecialchars( $wgRightsText );
1495                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1496
1497                         if ( $wgRightsUrl ) {
1498                                 $out .= '</a>';
1499                         }
1500                 }
1501
1502                 return $out;
1503         }
1504
1505         /**
1506          * Gets the powered by MediaWiki icon.
1507          * @return string
1508          */
1509         function getPoweredBy() {
1510                 global $wgStylePath;
1511
1512                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1513                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1514
1515                 return $img;
1516         }
1517
1518         function lastModified() {
1519                 global $wgLang, $wgArticle;
1520
1521                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1522                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1523                 } else {
1524                         $timestamp = $wgArticle->getTimestamp();
1525                 }
1526
1527                 if ( $timestamp ) {
1528                         $d = $wgLang->date( $timestamp, true );
1529                         $t = $wgLang->time( $timestamp, true );
1530                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1531                 } else {
1532                         $s = '';
1533                 }
1534
1535                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1536                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1537                 }
1538
1539                 return $s;
1540         }
1541
1542         function logoText( $align = '' ) {
1543                 if ( $align != '' ) {
1544                         $a = " align='{$align}'";
1545                 } else {
1546                         $a = '';
1547                 }
1548
1549                 $mp = wfMsg( 'mainpage' );
1550                 $mptitle = Title::newMainPage();
1551                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1552
1553                 $logourl = $this->getLogo();
1554                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1555
1556                 return $s;
1557         }
1558
1559         /**
1560          * Show a drop-down box of special pages
1561          */
1562         function specialPagesList() {
1563                 global $wgContLang, $wgServer, $wgRedirectScript;
1564
1565                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1566
1567                 foreach ( $pages as $name => $page ) {
1568                         $pages[$name] = $page->getDescription();
1569                 }
1570
1571                 $go = wfMsg( 'go' );
1572                 $sp = wfMsg( 'specialpages' );
1573                 $spp = $wgContLang->specialPage( 'Specialpages' );
1574
1575                 $s = '<form id="specialpages" method="get" ' .
1576                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1577                 $s .= "<select name=\"wpDropdown\">\n";
1578                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1579
1580
1581                 foreach ( $pages as $name => $desc ) {
1582                         $p = $wgContLang->specialPage( $name );
1583                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1584                 }
1585
1586                 $s .= "</select>\n";
1587                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1588                 $s .= "</form>\n";
1589
1590                 return $s;
1591         }
1592
1593         /**
1594          * Gets the link to the wiki's main page.
1595          * @return string
1596          */
1597         function mainPageLink() {
1598                 $s = $this->link(
1599                         Title::newMainPage(),
1600                         wfMsg( 'mainpage' ),
1601                         array(),
1602                         array(),
1603                         array( 'known', 'noclasses' )
1604                 );
1605
1606                 return $s;
1607         }
1608
1609         private function footerLink( $desc, $page ) {
1610                 // if the link description has been set to "-" in the default language,
1611                 if ( wfMsgForContent( $desc )  == '-' ) {
1612                         // then it is disabled, for all languages.
1613                         return '';
1614                 } else {
1615                         // Otherwise, we display the link for the user, described in their
1616                         // language (which may or may not be the same as the default language),
1617                         // but we make the link target be the one site-wide page.
1618                         $title = Title::newFromText( wfMsgForContent( $page ) );
1619
1620                         return $this->linkKnown(
1621                                 $title,
1622                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1623                         );
1624                 }
1625         }
1626
1627         /**
1628          * Gets the link to the wiki's privacy policy page.
1629          */
1630         function privacyLink() {
1631                 return $this->footerLink( 'privacy', 'privacypage' );
1632         }
1633
1634         /**
1635          * Gets the link to the wiki's about page.
1636          */
1637         function aboutLink() {
1638                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1639         }
1640
1641         /**
1642          * Gets the link to the wiki's general disclaimers page.
1643          */
1644         function disclaimerLink() {
1645                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1646         }
1647
1648         function editThisPage() {
1649                 global $wgOut;
1650
1651                 if ( !$wgOut->isArticleRelated() ) {
1652                         $s = wfMsg( 'protectedpage' );
1653                 } else {
1654                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1655                                 $t = wfMsg( 'editthispage' );
1656                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1657                                 $t = wfMsg( 'create-this-page' );
1658                         } else {
1659                                 $t = wfMsg( 'viewsource' );
1660                         }
1661
1662                         $s = $this->link(
1663                                 $this->mTitle,
1664                                 $t,
1665                                 array(),
1666                                 $this->editUrlOptions(),
1667                                 array( 'known', 'noclasses' )
1668                         );
1669                 }
1670
1671                 return $s;
1672         }
1673
1674         /**
1675          * Return URL options for the 'edit page' link.
1676          * This may include an 'oldid' specifier, if the current page view is such.
1677          *
1678          * @return array
1679          * @private
1680          */
1681         function editUrlOptions() {
1682                 global $wgArticle;
1683
1684                 $options = array( 'action' => 'edit' );
1685
1686                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1687                         $options['oldid'] = intval( $this->mRevisionId );
1688                 }
1689
1690                 return $options;
1691         }
1692
1693         function deleteThisPage() {
1694                 global $wgUser, $wgRequest;
1695
1696                 $diff = $wgRequest->getVal( 'diff' );
1697
1698                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1699                         $t = wfMsg( 'deletethispage' );
1700
1701                         $s = $this->link(
1702                                 $this->mTitle,
1703                                 $t,
1704                                 array(),
1705                                 array( 'action' => 'delete' ),
1706                                 array( 'known', 'noclasses' )
1707                         );
1708                 } else {
1709                         $s = '';
1710                 }
1711
1712                 return $s;
1713         }
1714
1715         function protectThisPage() {
1716                 global $wgUser, $wgRequest;
1717
1718                 $diff = $wgRequest->getVal( 'diff' );
1719
1720                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1721                         if ( $this->mTitle->isProtected() ) {
1722                                 $text = wfMsg( 'unprotectthispage' );
1723                                 $query = array( 'action' => 'unprotect' );
1724                         } else {
1725                                 $text = wfMsg( 'protectthispage' );
1726                                 $query = array( 'action' => 'protect' );
1727                         }
1728
1729                         $s = $this->link(
1730                                 $this->mTitle,
1731                                 $text,
1732                                 array(),
1733                                 $query,
1734                                 array( 'known', 'noclasses' )
1735                         );
1736                 } else {
1737                         $s = '';
1738                 }
1739
1740                 return $s;
1741         }
1742
1743         function watchThisPage() {
1744                 global $wgOut;
1745                 ++$this->mWatchLinkNum;
1746
1747                 if ( $wgOut->isArticleRelated() ) {
1748                         if ( $this->mTitle->userIsWatching() ) {
1749                                 $text = wfMsg( 'unwatchthispage' );
1750                                 $query = array( 'action' => 'unwatch' );
1751                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1752                         } else {
1753                                 $text = wfMsg( 'watchthispage' );
1754                                 $query = array( 'action' => 'watch' );
1755                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1756                         }
1757
1758                         $s = $this->link(
1759                                 $this->mTitle,
1760                                 $text,
1761                                 array( 'id' => $id ),
1762                                 $query,
1763                                 array( 'known', 'noclasses' )
1764                         );
1765                 } else {
1766                         $s = wfMsg( 'notanarticle' );
1767                 }
1768
1769                 return $s;
1770         }
1771
1772         function moveThisPage() {
1773                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1774                         return $this->link(
1775                                 SpecialPage::getTitleFor( 'Movepage' ),
1776                                 wfMsg( 'movethispage' ),
1777                                 array(),
1778                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1779                                 array( 'known', 'noclasses' )
1780                         );
1781                 } else {
1782                         // no message if page is protected - would be redundant
1783                         return '';
1784                 }
1785         }
1786
1787         function historyLink() {
1788                 return $this->link(
1789                         $this->mTitle,
1790                         wfMsgHtml( 'history' ),
1791                         array( 'rel' => 'archives' ),
1792                         array( 'action' => 'history' )
1793                 );
1794         }
1795
1796         function whatLinksHere() {
1797                 return $this->link(
1798                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1799                         wfMsgHtml( 'whatlinkshere' ),
1800                         array(),
1801                         array(),
1802                         array( 'known', 'noclasses' )
1803                 );
1804         }
1805
1806         function userContribsLink() {
1807                 return $this->link(
1808                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1809                         wfMsgHtml( 'contributions' ),
1810                         array(),
1811                         array(),
1812                         array( 'known', 'noclasses' )
1813                 );
1814         }
1815
1816         function showEmailUser( $id ) {
1817                 global $wgUser;
1818                 $targetUser = User::newFromId( $id );
1819                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1820                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1821         }
1822
1823         function emailUserLink() {
1824                 return $this->link(
1825                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1826                         wfMsg( 'emailuser' ),
1827                         array(),
1828                         array(),
1829                         array( 'known', 'noclasses' )
1830                 );
1831         }
1832
1833         function watchPageLinksLink() {
1834                 global $wgOut;
1835
1836                 if ( !$wgOut->isArticleRelated() ) {
1837                         return '(' . wfMsg( 'notanarticle' ) . ')';
1838                 } else {
1839                         return $this->link(
1840                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1841                                 wfMsg( 'recentchangeslinked-toolbox' ),
1842                                 array(),
1843                                 array(),
1844                                 array( 'known', 'noclasses' )
1845                         );
1846                 }
1847         }
1848
1849         function trackbackLink() {
1850                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1851                         . wfMsg( 'trackbacklink' ) . '</a>';
1852         }
1853
1854         function otherLanguages() {
1855                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1856
1857                 if ( $wgHideInterlanguageLinks ) {
1858                         return '';
1859                 }
1860
1861                 $a = $wgOut->getLanguageLinks();
1862
1863                 if ( 0 == count( $a ) ) {
1864                         return '';
1865                 }
1866
1867                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1868                 $first = true;
1869
1870                 if ( $wgContLang->isRTL() ) {
1871                         $s .= '<span dir="LTR">';
1872                 }
1873
1874                 foreach ( $a as $l ) {
1875                         if ( !$first ) {
1876                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1877                         }
1878
1879                         $first = false;
1880
1881                         $nt = Title::newFromText( $l );
1882                         $url = $nt->escapeFullURL();
1883                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1884                         $title = htmlspecialchars( $nt->getText() );
1885
1886                         if ( $text == '' ) {
1887                                 $text = $l;
1888                         }
1889
1890                         $style = $this->getExternalLinkAttributes();
1891                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1892                 }
1893
1894                 if ( $wgContLang->isRTL() ) {
1895                         $s .= '</span>';
1896                 }
1897
1898                 return $s;
1899         }
1900
1901         function talkLink() {
1902                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1903                         # No discussion links for special pages
1904                         return '';
1905                 }
1906
1907                 $linkOptions = array();
1908
1909                 if ( $this->mTitle->isTalkPage() ) {
1910                         $link = $this->mTitle->getSubjectPage();
1911                         switch( $link->getNamespace() ) {
1912                                 case NS_MAIN:
1913                                         $text = wfMsg( 'articlepage' );
1914                                         break;
1915                                 case NS_USER:
1916                                         $text = wfMsg( 'userpage' );
1917                                         break;
1918                                 case NS_PROJECT:
1919                                         $text = wfMsg( 'projectpage' );
1920                                         break;
1921                                 case NS_FILE:
1922                                         $text = wfMsg( 'imagepage' );
1923                                         # Make link known if image exists, even if the desc. page doesn't.
1924                                         if ( wfFindFile( $link ) )
1925                                                 $linkOptions[] = 'known';
1926                                         break;
1927                                 case NS_MEDIAWIKI:
1928                                         $text = wfMsg( 'mediawikipage' );
1929                                         break;
1930                                 case NS_TEMPLATE:
1931                                         $text = wfMsg( 'templatepage' );
1932                                         break;
1933                                 case NS_HELP:
1934                                         $text = wfMsg( 'viewhelppage' );
1935                                         break;
1936                                 case NS_CATEGORY:
1937                                         $text = wfMsg( 'categorypage' );
1938                                         break;
1939                                 default:
1940                                         $text = wfMsg( 'articlepage' );
1941                         }
1942                 } else {
1943                         $link = $this->mTitle->getTalkPage();
1944                         $text = wfMsg( 'talkpage' );
1945                 }
1946
1947                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1948
1949                 return $s;
1950         }
1951
1952         function commentLink() {
1953                 global $wgOut;
1954
1955                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1956                         return '';
1957                 }
1958
1959                 # __NEWSECTIONLINK___ changes behaviour here
1960                 # If it is present, the link points to this page, otherwise
1961                 # it points to the talk page
1962                 if ( $this->mTitle->isTalkPage() ) {
1963                         $title = $this->mTitle;
1964                 } elseif ( $wgOut->showNewSectionLink() ) {
1965                         $title = $this->mTitle;
1966                 } else {
1967                         $title = $this->mTitle->getTalkPage();
1968                 }
1969
1970                 return $this->link(
1971                         $title,
1972                         wfMsg( 'postcomment' ),
1973                         array(),
1974                         array(
1975                                 'action' => 'edit',
1976                                 'section' => 'new'
1977                         ),
1978                         array( 'known', 'noclasses' )
1979                 );
1980         }
1981
1982         function getUploadLink() {
1983                 global $wgUploadNavigationUrl;
1984
1985                 if ( $wgUploadNavigationUrl ) {
1986                         # Using an empty class attribute to avoid automatic setting of "external" class
1987                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
1988                 } else {
1989                         return $this->link(
1990                                 SpecialPage::getTitleFor( 'Upload' ),
1991                                 wfMsgHtml( 'upload' ),
1992                                 array(),
1993                                 array(),
1994                                 array( 'known', 'noclasses' )
1995                         );
1996                 }
1997         }
1998
1999         /* these are used extensively in SkinTemplate, but also some other places */
2000         static function makeMainPageUrl( $urlaction = '' ) {
2001                 $title = Title::newMainPage();
2002                 self::checkTitle( $title, '' );
2003
2004                 return $title->getLocalURL( $urlaction );
2005         }
2006
2007         static function makeSpecialUrl( $name, $urlaction = '' ) {
2008                 $title = SpecialPage::getTitleFor( $name );
2009                 return $title->getLocalURL( $urlaction );
2010         }
2011
2012         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2013                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2014                 return $title->getLocalURL( $urlaction );
2015         }
2016
2017         static function makeI18nUrl( $name, $urlaction = '' ) {
2018                 $title = Title::newFromText( wfMsgForContent( $name ) );
2019                 self::checkTitle( $title, $name );
2020                 return $title->getLocalURL( $urlaction );
2021         }
2022
2023         static function makeUrl( $name, $urlaction = '' ) {
2024                 $title = Title::newFromText( $name );
2025                 self::checkTitle( $title, $name );
2026
2027                 return $title->getLocalURL( $urlaction );
2028         }
2029
2030         /**
2031          * If url string starts with http, consider as external URL, else
2032          * internal
2033          */
2034         static function makeInternalOrExternalUrl( $name ) {
2035                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2036                         return $name;
2037                 } else {
2038                         return self::makeUrl( $name );
2039                 }
2040         }
2041
2042         # this can be passed the NS number as defined in Language.php
2043         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2044                 $title = Title::makeTitleSafe( $namespace, $name );
2045                 self::checkTitle( $title, $name );
2046
2047                 return $title->getLocalURL( $urlaction );
2048         }
2049
2050         /* these return an array with the 'href' and boolean 'exists' */
2051         static function makeUrlDetails( $name, $urlaction = '' ) {
2052                 $title = Title::newFromText( $name );
2053                 self::checkTitle( $title, $name );
2054
2055                 return array(
2056                         'href' => $title->getLocalURL( $urlaction ),
2057                         'exists' => $title->getArticleID() != 0,
2058                 );
2059         }
2060
2061         /**
2062          * Make URL details where the article exists (or at least it's convenient to think so)
2063          */
2064         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2065                 $title = Title::newFromText( $name );
2066                 self::checkTitle( $title, $name );
2067
2068                 return array(
2069                         'href' => $title->getLocalURL( $urlaction ),
2070                         'exists' => true
2071                 );
2072         }
2073
2074         # make sure we have some title to operate on
2075         static function checkTitle( &$title, $name ) {
2076                 if ( !is_object( $title ) ) {
2077                         $title = Title::newFromText( $name );
2078                         if ( !is_object( $title ) ) {
2079                                 $title = Title::newFromText( '--error: link target missing--' );
2080                         }
2081                 }
2082         }
2083
2084         /**
2085          * Build an array that represents the sidebar(s), the navigation bar among them
2086          *
2087          * @return array
2088          */
2089         function buildSidebar() {
2090                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2091                 global $wgLang;
2092                 wfProfileIn( __METHOD__ );
2093
2094                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2095
2096                 if ( $wgEnableSidebarCache ) {
2097                         $cachedsidebar = $parserMemc->get( $key );
2098                         if ( $cachedsidebar ) {
2099                                 wfProfileOut( __METHOD__ );
2100                                 return $cachedsidebar;
2101                         }
2102                 }
2103
2104                 $bar = array();
2105                 $this->addToSidebar( $bar, 'sidebar' );
2106
2107                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2108                 if ( $wgEnableSidebarCache ) {
2109                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2110                 }
2111
2112                 wfProfileOut( __METHOD__ );
2113                 return $bar;
2114         }
2115         /**
2116          * Add content from a sidebar system message
2117          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2118          *
2119          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2120          *
2121          * @param &$bar array
2122          * @param $message String
2123          */
2124         function addToSidebar( &$bar, $message ) {
2125                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2126         }
2127
2128         /**
2129          * Add content from plain text
2130          * @since 1.17
2131          * @param &$bar array
2132          * @param $text string
2133          */
2134         function addToSidebarPlain( &$bar, $text ) {
2135                 $lines = explode( "\n", $text );
2136                 $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.
2137
2138                 $heading = '';
2139
2140                 foreach ( $lines as $line ) {
2141                         if ( strpos( $line, '*' ) !== 0 ) {
2142                                 continue;
2143                         }
2144
2145                         if ( strpos( $line, '**' ) !== 0 ) {
2146                                 $heading = trim( $line, '* ' );
2147                                 if ( !array_key_exists( $heading, $bar ) ) {
2148                                         $bar[$heading] = array();
2149                                 }
2150                         } else {
2151                                 $line = trim( $line, '* ' );
2152
2153                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2154                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2155                                         $link = wfMsgForContent( $line[0] );
2156
2157                                         if ( $link == '-' ) {
2158                                                 continue;
2159                                         }
2160
2161                                         $text = wfMsgExt( $line[1], 'parsemag' );
2162
2163                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2164                                                 $text = $line[1];
2165                                         }
2166
2167                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2168                                                 $link = $line[0];
2169                                         }
2170
2171                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2172                                                 $href = $link;
2173                                         } else {
2174                                                 $title = Title::newFromText( $link );
2175
2176                                                 if ( $title ) {
2177                                                         $title = $title->fixSpecialName();
2178                                                         $href = $title->getLocalURL();
2179                                                 } else {
2180                                                         $href = 'INVALID-TITLE';
2181                                                 }
2182                                         }
2183
2184                                         $bar[$heading][] = array(
2185                                                 'text' => $text,
2186                                                 'href' => $href,
2187                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2188                                                 'active' => false
2189                                         );
2190                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2191                                         global $wgParser, $wgTitle;
2192
2193                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2194
2195                                         if ( is_null( $wgParser->mOptions ) ) {
2196                                                 $wgParser->mOptions = new ParserOptions();
2197                                         }
2198
2199                                         $wgParser->mOptions->setEditSection( false );
2200                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2201                                 } else {
2202                                         continue;
2203                                 }
2204                         }
2205                 }
2206
2207                 if ( count( $wikiBar ) > 0 ) {
2208                         $bar = array_merge( $bar, $wikiBar );
2209                 }
2210
2211                 return $bar;
2212         }
2213
2214         /**
2215          * Should we include common/wikiprintable.css?  Skins that have their own
2216          * print stylesheet should override this and return false.  (This is an
2217          * ugly hack to get Monobook to play nicely with
2218          * OutputPage::headElement().)
2219          *
2220          * @return bool
2221          */
2222         public function commonPrintStylesheet() {
2223                 return true;
2224         }
2225
2226         /**
2227          * Gets new talk page messages for the current user.
2228          * @return MediaWiki message or if no new talk page messages, nothing
2229          */
2230         function getNewtalks() {
2231                 global $wgUser, $wgOut;
2232
2233                 $newtalks = $wgUser->getNewMessageLinks();
2234                 $ntl = '';
2235
2236                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2237                         $userTitle = $this->mUser->getUserPage();
2238                         $userTalkTitle = $userTitle->getTalkPage();
2239
2240                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2241                                 $newMessagesLink = $this->link(
2242                                         $userTalkTitle,
2243                                         wfMsgHtml( 'newmessageslink' ),
2244                                         array(),
2245                                         array( 'redirect' => 'no' ),
2246                                         array( 'known', 'noclasses' )
2247                                 );
2248
2249                                 $newMessagesDiffLink = $this->link(
2250                                         $userTalkTitle,
2251                                         wfMsgHtml( 'newmessagesdifflink' ),
2252                                         array(),
2253                                         array( 'diff' => 'cur' ),
2254                                         array( 'known', 'noclasses' )
2255                                 );
2256
2257                                 $ntl = wfMsg(
2258                                         'youhavenewmessages',
2259                                         $newMessagesLink,
2260                                         $newMessagesDiffLink
2261                                 );
2262                                 # Disable Squid cache
2263                                 $wgOut->setSquidMaxage( 0 );
2264                         }
2265                 } elseif ( count( $newtalks ) ) {
2266                         // _>" " for BC <= 1.16
2267                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2268                         $msgs = array();
2269
2270                         foreach ( $newtalks as $newtalk ) {
2271                                 $msgs[] = Xml::element(
2272                                         'a',
2273                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2274                                 );
2275                         }
2276                         $parts = implode( $sep, $msgs );
2277                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2278                         $wgOut->setSquidMaxage( 0 );
2279                 }
2280
2281                 return $ntl;
2282         }
2283 }