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          * URL to the logo
 574          */
 575         function getLogo() {
 576                 global $wgLogo;
 577                 return $wgLogo;
 578         }
 579
 580         /**
 581          * This will be called immediately after the <body> tag.  Split into
 582          * two functions to make it easier to subclass.
 583          */
 584         function beforeContent() {
 585                 return $this->doBeforeContent();
 586         }
 587
 588         function doBeforeContent() {
 589                 global $wgContLang;
 590                 wfProfileIn( __METHOD__ );
 591
 592                 $s = '';
 593                 $qb = $this->qbSetting();
 594
 595                 $langlinks = $this->otherLanguages();
 596                 if ( $langlinks ) {
 597                         $rows = 2;
 598                         $borderhack = '';
 599                 } else {
 600                         $rows = 1;
 601                         $langlinks = false;
 602                         $borderhack = 'class="top"';
 603                 }
 604
 605                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 606                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 607
 608                 $shove = ( $qb != 0 );
 609                 $left = ( $qb == 1 || $qb == 3 );
 610
 611                 if ( $wgContLang->isRTL() ) {
 612                         $left = !$left;
 613                 }
 614
 615                 if ( !$shove ) {
 616                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 617                                 $this->logoText() . '</td>';
 618                 } elseif ( $left ) {
 619                         $s .= $this->getQuickbarCompensator( $rows );
 620                 }
 621
 622                 $l = $wgContLang->alignStart();
 623                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 624
 625                 $s .= $this->topLinks();
 626                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 627
 628                 $r = $wgContLang->alignEnd();
 629                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 630                 $s .= $this->nameAndLogin();
 631                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 632
 633                 if ( $langlinks ) {
 634                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 635                 }
 636
 637                 if ( $shove && !$left ) { # Right
 638                         $s .= $this->getQuickbarCompensator( $rows );
 639                 }
 640
 641                 $s .= "</tr>\n</table>\n</div>\n";
 642                 $s .= "\n<div id='article'>\n";
 643
 644                 $notice = wfGetSiteNotice();
 645
 646                 if ( $notice ) {
 647                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 648                 }
 649                 $s .= $this->pageTitle();
 650                 $s .= $this->pageSubtitle();
 651                 $s .= $this->getCategories();
 652
 653                 wfProfileOut( __METHOD__ );
 654                 return $s;
 655         }
 656
 657         function getCategoryLinks() {
 658                 global $wgOut, $wgUseCategoryBrowser;
 659                 global $wgContLang, $wgUser;
 660
 661                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 662                         return '';
 663                 }
 664
 665                 # Separator
 666                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 667
 668                 // Use Unicode bidi embedding override characters,
 669                 // to make sure links don't smash each other up in ugly ways.
 670                 $dir = $wgContLang->getDir();
 671                 $embed = "<span dir='$dir'>";
 672                 $pop = '</span>';
 673
 674                 $allCats = $wgOut->getCategoryLinks();
 675                 $s = '';
 676                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 677
 678                 if ( !empty( $allCats['normal'] ) ) {
 679                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 680
 681                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 682                         $s .= '<div id="mw-normal-catlinks">' .
 683                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 684                                 . $colon . $t . '</div>';
 685                 }
 686
 687                 # Hidden categories
 688                 if ( isset( $allCats['hidden'] ) ) {
 689                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 690                                 $class = 'mw-hidden-cats-user-shown';
 691                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 692                                 $class = 'mw-hidden-cats-ns-shown';
 693                         } else {
 694                                 $class = 'mw-hidden-cats-hidden';
 695                         }
 696
 697                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 698                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 699                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 700                                 '</div>';
 701                 }
 702
 703                 # optional 'dmoz-like' category browser. Will be shown under the list
 704                 # of categories an article belong to
 705                 if ( $wgUseCategoryBrowser ) {
 706                         $s .= '<br /><hr />';
 707
 708                         # get a big array of the parents tree
 709                         $parenttree = $this->mTitle->getParentCategoryTree();
 710                         # Skin object passed by reference cause it can not be
 711                         # accessed under the method subfunction drawCategoryBrowser
 712                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 713                         # Clean out bogus first entry and sort them
 714                         unset( $tempout[0] );
 715                         asort( $tempout );
 716                         # Output one per line
 717                         $s .= implode( "<br />\n", $tempout );
 718                 }
 719
 720                 return $s;
 721         }
 722
 723         /**
 724          * Render the array as a serie of links.
 725          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 726          * @param &skin Object: skin passed by reference
 727          * @return String separated by &gt;, terminate with "\n"
 728          */
 729         function drawCategoryBrowser( $tree, &$skin ) {
 730                 $return = '';
 731
 732                 foreach ( $tree as $element => $parent ) {
 733                         if ( empty( $parent ) ) {
 734                                 # element start a new list
 735                                 $return .= "\n";
 736                         } else {
 737                                 # grab the others elements
 738                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 739                         }
 740
 741                         # add our current element to the list
 742                         $eltitle = Title::newFromText( $element );
 743                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 744                 }
 745
 746                 return $return;
 747         }
 748
 749         function getCategories() {
 750                 $catlinks = $this->getCategoryLinks();
 751
 752                 $classes = 'catlinks';
 753
 754                 global $wgOut, $wgUser;
 755
 756                 // Check what we're showing
 757                 $allCats = $wgOut->getCategoryLinks();
 758                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 759                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 760
 761                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 762                         $classes .= ' catlinks-allhidden';
 763                 }
 764
 765                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 766         }
 767
 768         function getQuickbarCompensator( $rows = 1 ) {
 769                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 770         }
 771
 772         /**
 773          * This runs a hook to allow extensions placing their stuff after content
 774          * and article metadata (e.g. categories).
 775          * Note: This function has nothing to do with afterContent().
 776          *
 777          * This hook is placed here in order to allow using the same hook for all
 778          * skins, both the SkinTemplate based ones and the older ones, which directly
 779          * use this class to get their data.
 780          *
 781          * The output of this function gets processed in SkinTemplate::outputPage() for
 782          * the SkinTemplate based skins, all other skins should directly echo it.
 783          *
 784          * Returns an empty string by default, if not changed by any hook function.
 785          */
 786         protected function afterContentHook() {
 787                 $data = '';
 788
 789                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 790                         // adding just some spaces shouldn't toggle the output
 791                         // of the whole <div/>, so we use trim() here
 792                         if ( trim( $data ) != '' ) {
 793                                 // Doing this here instead of in the skins to
 794                                 // ensure that the div has the same ID in all
 795                                 // skins
 796                                 $data = "<div id='mw-data-after-content'>\n" .
 797                                         "\t$data\n" .
 798                                         "</div>\n";
 799                         }
 800                 } else {
 801                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 802                 }
 803
 804                 return $data;
 805         }
 806
 807         /**
 808          * Generate debug data HTML for displaying at the bottom of the main content
 809          * area.
 810          * @return String HTML containing debug data, if enabled (otherwise empty).
 811          */
 812         protected function generateDebugHTML() {
 813                 global $wgShowDebug, $wgOut;
 814
 815                 if ( $wgShowDebug ) {
 816                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 817                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 818                                 $listInternals . "</ul>\n";
 819                 }
 820
 821                 return '';
 822         }
 823
 824         private function formatDebugHTML( $debugText ) {
 825                 $lines = explode( "\n", $debugText );
 826                 $curIdent = 0;
 827                 $ret = '<li>';
 828
 829                 foreach ( $lines as $line ) {
 830                         $m = array();
 831                         $display = ltrim( $line );
 832                         $ident = strlen( $line ) - strlen( $display );
 833                         $diff = $ident - $curIdent;
 834
 835                         if ( $display == '' ) {
 836                                 $display = "\xc2\xa0";
 837                         }
 838
 839                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 840                                 $ident = $curIdent;
 841                                 $diff = 0;
 842                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 843                         } else {
 844                                 $display = htmlspecialchars( $display );
 845                         }
 846
 847                         if ( $diff < 0 ) {
 848                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 849                         } elseif ( $diff == 0 ) {
 850                                 $ret .= "</li><li>\n";
 851                         } else {
 852                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 853                         }
 854                         $ret .= $display . "\n";
 855
 856                         $curIdent = $ident;
 857                 }
 858
 859                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 860
 861                 return $ret;
 862         }
 863
 864         /**
 865          * This gets called shortly before the </body> tag.
 866          * @return String HTML to be put before </body>
 867          */
 868         function afterContent() {
 869                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 870                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 871         }
 872
 873         /**
 874          * This gets called shortly before the </body> tag.
 875          * @param $out OutputPage object
 876          * @return String HTML-wrapped JS code to be put before </body>
 877          */
 878         function bottomScripts( $out ) {
 879                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 880                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 881
 882                 return $bottomScriptText;
 883         }
 884
 885         /** @return string Retrievied from HTML text */
 886         function printSource() {
 887                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 888                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 889         }
 890
 891         function printFooter() {
 892                 return "<p>" .  $this->printSource() .
 893                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 894         }
 895
 896         /** overloaded by derived classes */
 897         function doAfterContent() {
 898                 return '</div></div>';
 899         }
 900
 901         function pageTitleLinks() {
 902                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 903
 904                 $oldid = $wgRequest->getVal( 'oldid' );
 905                 $diff = $wgRequest->getVal( 'diff' );
 906                 $action = $wgRequest->getText( 'action' );
 907
 908                 $s[] = $this->printableLink();
 909                 $disclaimer = $this->disclaimerLink(); # may be empty
 910
 911                 if ( $disclaimer ) {
 912                         $s[] = $disclaimer;
 913                 }
 914
 915                 $privacy = $this->privacyLink(); # may be empty too
 916
 917                 if ( $privacy ) {
 918                         $s[] = $privacy;
 919                 }
 920
 921                 if ( $wgOut->isArticleRelated() ) {
 922                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
 923                                 $name = $this->mTitle->getDBkey();
 924                                 $image = wfFindFile( $this->mTitle );
 925
 926                                 if ( $image ) {
 927                                         $link = htmlspecialchars( $image->getURL() );
 928                                         $style = $this->getInternalLinkAttributes( $link, $name );
 929                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 930                                 }
 931                         }
 932                 }
 933
 934                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 935                         $s[] .= $this->link(
 936                                         $this->mTitle,
 937                                         wfMsg( 'currentrev' ),
 938                                         array(),
 939                                         array(),
 940                                         array( 'known', 'noclasses' )
 941                         );
 942                 }
 943
 944                 if ( $wgUser->getNewtalk() ) {
 945                         # do not show "You have new messages" text when we are viewing our
 946                         # own talk page
 947                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
 948                                 $tl = $this->link(
 949                                         $wgUser->getTalkPage(),
 950                                         wfMsgHtml( 'newmessageslink' ),
 951                                         array(),
 952                                         array( 'redirect' => 'no' ),
 953                                         array( 'known', 'noclasses' )
 954                                 );
 955
 956                                 $dl = $this->link(
 957                                         $wgUser->getTalkPage(),
 958                                         wfMsgHtml( 'newmessagesdifflink' ),
 959                                         array(),
 960                                         array( 'diff' => 'cur' ),
 961                                         array( 'known', 'noclasses' )
 962                                 );
 963                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 964                                 # disable caching
 965                                 $wgOut->setSquidMaxage( 0 );
 966                                 $wgOut->enableClientCache( false );
 967                         }
 968                 }
 969
 970                 $undelete = $this->getUndeleteLink();
 971
 972                 if ( !empty( $undelete ) ) {
 973                         $s[] = $undelete;
 974                 }
 975
 976                 return $wgLang->pipeList( $s );
 977         }
 978
 979         function getUndeleteLink() {
 980                 global $wgUser, $wgLang, $wgRequest;
 981
 982                 $action = $wgRequest->getVal( 'action', 'view' );
 983
 984                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
 985                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
 986                         $n = $this->mTitle->isDeleted();
 987
 988                         if ( $n ) {
 989                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
 990                                         $msg = 'thisisdeleted';
 991                                 } else {
 992                                         $msg = 'viewdeleted';
 993                                 }
 994
 995                                 return wfMsg(
 996                                         $msg,
 997                                         $this->link(
 998                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
 999                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1000                                                 array(),
1001                                                 array(),
1002                                                 array( 'known', 'noclasses' )
1003                                         )
1004                                 );
1005                         }
1006                 }
1007
1008                 return '';
1009         }
1010
1011         function printableLink() {
1012                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1013
1014                 $s = array();
1015
1016                 if ( !$wgOut->isPrintable() ) {
1017                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1018                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1019                 }
1020
1021                 if ( $wgOut->isSyndicated() ) {
1022                         foreach ( $wgFeedClasses as $format => $class ) {
1023                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1024                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1025                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1026                         }
1027                 }
1028                 return $wgLang->pipeList( $s );
1029         }
1030
1031         /**
1032          * Gets the h1 element with the page title.
1033          * @return string
1034          */
1035         function pageTitle() {
1036                 global $wgOut;
1037                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1038                 return $s;
1039         }
1040
1041         function pageSubtitle() {
1042                 global $wgOut;
1043
1044                 $sub = $wgOut->getSubtitle();
1045
1046                 if ( $sub == '' ) {
1047                         global $wgExtraSubtitle;
1048                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1049                 }
1050
1051                 $subpages = $this->subPageSubtitle();
1052                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1053                 $s = "<p class='subtitle'>{$sub}</p>\n";
1054
1055                 return $s;
1056         }
1057
1058         function subPageSubtitle() {
1059                 $subpages = '';
1060
1061                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this ) ) ) {
1062                         return $subpages;
1063                 }
1064
1065                 global $wgOut;
1066
1067                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1068                         $ptext = $this->mTitle->getPrefixedText();
1069                         if ( preg_match( '/\//', $ptext ) ) {
1070                                 $links = explode( '/', $ptext );
1071                                 array_pop( $links );
1072                                 $c = 0;
1073                                 $growinglink = '';
1074                                 $display = '';
1075
1076                                 foreach ( $links as $link ) {
1077                                         $growinglink .= $link;
1078                                         $display .= $link;
1079                                         $linkObj = Title::newFromText( $growinglink );
1080
1081                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1082                                                 $getlink = $this->link(
1083                                                         $linkObj,
1084                                                         htmlspecialchars( $display ),
1085                                                         array(),
1086                                                         array(),
1087                                                         array( 'known', 'noclasses' )
1088                                                 );
1089
1090                                                 $c++;
1091
1092                                                 if ( $c > 1 ) {
1093                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1094                                                 } else  {
1095                                                         $subpages .= '&lt; ';
1096                                                 }
1097
1098                                                 $subpages .= $getlink;
1099                                                 $display = '';
1100                                         } else {
1101                                                 $display .= '/';
1102                                         }
1103                                         $growinglink .= '/';
1104                                 }
1105                         }
1106                 }
1107
1108                 return $subpages;
1109         }
1110
1111         /**
1112          * Returns true if the IP should be shown in the header
1113          */
1114         function showIPinHeader() {
1115                 global $wgShowIPinHeader;
1116                 return $wgShowIPinHeader && session_id() != '';
1117         }
1118
1119         function nameAndLogin() {
1120                 global $wgUser, $wgLang, $wgContLang;
1121
1122                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1123
1124                 $ret = '';
1125
1126                 if ( $wgUser->isAnon() ) {
1127                         if ( $this->showIPinHeader() ) {
1128                                 $name = wfGetIP();
1129
1130                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1131                                         $wgLang->getNsText( NS_TALK ) );
1132
1133                                 $ret .= "$name ($talkLink)";
1134                         } else {
1135                                 $ret .= wfMsg( 'notloggedin' );
1136                         }
1137
1138                         $returnTo = $this->mTitle->getPrefixedDBkey();
1139                         $query = array();
1140
1141                         if ( $logoutPage != $returnTo ) {
1142                                 $query['returnto'] = $returnTo;
1143                         }
1144
1145                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1146                                 ? 'nav-login-createaccount'
1147                                 : 'login';
1148                         $ret .= "\n<br />" . $this->link(
1149                                 SpecialPage::getTitleFor( 'Userlogin' ),
1150                                 wfMsg( $loginlink ), array(), $query
1151                         );
1152                 } else {
1153                         $returnTo = $this->mTitle->getPrefixedDBkey();
1154                         $talkLink = $this->link( $wgUser->getTalkPage(),
1155                                 $wgLang->getNsText( NS_TALK ) );
1156
1157                         $ret .= $this->link( $wgUser->getUserPage(),
1158                                 htmlspecialchars( $wgUser->getName() ) );
1159                         $ret .= " ($talkLink)<br />";
1160                         $ret .= $wgLang->pipeList( array(
1161                                 $this->link(
1162                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1163                                         array(), array( 'returnto' => $returnTo )
1164                                 ),
1165                                 $this->specialLink( 'Preferences' ),
1166                         ) );
1167                 }
1168
1169                 $ret = $wgLang->pipeList( array(
1170                         $ret,
1171                         $this->link(
1172                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1173                                 wfMsg( 'help' )
1174                         ),
1175                 ) );
1176
1177                 return $ret;
1178         }
1179
1180         function getSearchLink() {
1181                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1182                 return $searchPage->getLocalURL();
1183         }
1184
1185         function escapeSearchLink() {
1186                 return htmlspecialchars( $this->getSearchLink() );
1187         }
1188
1189         function searchForm() {
1190                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1191
1192                 $search = $wgRequest->getText( 'search' );
1193
1194                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1195                   . $this->escapeSearchLink() . "\">\n"
1196                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1197                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1198                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1199
1200                 if ( $wgUseTwoButtonsSearchForm ) {
1201                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1202                 } else {
1203                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1204                 }
1205
1206                 $s .= '</form>';
1207
1208                 // Ensure unique id's for search boxes made after the first
1209                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1210
1211                 return $s;
1212         }
1213
1214         function topLinks() {
1215                 global $wgOut;
1216
1217                 $s = array(
1218                         $this->mainPageLink(),
1219                         $this->specialLink( 'Recentchanges' )
1220                 );
1221
1222                 if ( $wgOut->isArticleRelated() ) {
1223                         $s[] = $this->editThisPage();
1224                         $s[] = $this->historyLink();
1225                 }
1226
1227                 # Many people don't like this dropdown box
1228                 # $s[] = $this->specialPagesList();
1229
1230                 if ( $this->variantLinks() ) {
1231                         $s[] = $this->variantLinks();
1232                 }
1233
1234                 if ( $this->extensionTabLinks() ) {
1235                         $s[] = $this->extensionTabLinks();
1236                 }
1237
1238                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1239                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1240         }
1241
1242         /**
1243          * Compatibility for extensions adding functionality through tabs.
1244          * Eventually these old skins should be replaced with SkinTemplate-based
1245          * versions, sigh...
1246          * @return string
1247          */
1248         function extensionTabLinks() {
1249                 $tabs = array();
1250                 $out = '';
1251                 $s = array();
1252                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1253                 foreach ( $tabs as $tab ) {
1254                         $s[] = Xml::element( 'a',
1255                                 array( 'href' => $tab['href'] ),
1256                                 $tab['text'] );
1257                 }
1258
1259                 if ( count( $s ) ) {
1260                         global $wgLang;
1261
1262                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1263                         $out .= $wgLang->pipeList( $s );
1264                 }
1265
1266                 return $out;
1267         }
1268
1269         /**
1270          * Language/charset variant links for classic-style skins
1271          * @return string
1272          */
1273         function variantLinks() {
1274                 $s = '';
1275
1276                 /* show links to different language variants */
1277                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1278
1279                 $variants = $wgContLang->getVariants();
1280
1281                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1282                         foreach ( $variants as $code ) {
1283                                 $varname = $wgContLang->getVariantname( $code );
1284
1285                                 if ( $varname == 'disable' ) {
1286                                         continue;
1287                                 }
1288                                 $s = $wgLang->pipeList( array(
1289                                         $s,
1290                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1291                                 ) );
1292                         }
1293                 }
1294
1295                 return $s;
1296         }
1297
1298         function bottomLinks() {
1299                 global $wgOut, $wgUser, $wgUseTrackbacks;
1300                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1301
1302                 $s = '';
1303                 if ( $wgOut->isArticleRelated() ) {
1304                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1305
1306                         if ( $wgUser->isLoggedIn() ) {
1307                                 $element[] = $this->watchThisPage();
1308                         }
1309
1310                         $element[] = $this->talkLink();
1311                         $element[] = $this->historyLink();
1312                         $element[] = $this->whatLinksHere();
1313                         $element[] = $this->watchPageLinksLink();
1314
1315                         if ( $wgUseTrackbacks ) {
1316                                 $element[] = $this->trackbackLink();
1317                         }
1318
1319                         if (
1320                                 $this->mTitle->getNamespace() == NS_USER ||
1321                                 $this->mTitle->getNamespace() == NS_USER_TALK
1322                         ) {
1323                                 $id = User::idFromName( $this->mTitle->getText() );
1324                                 $ip = User::isIP( $this->mTitle->getText() );
1325
1326                                 # Both anons and non-anons have contributions list
1327                                 if ( $id || $ip ) {
1328                                         $element[] = $this->userContribsLink();
1329                                 }
1330
1331                                 if ( $this->showEmailUser( $id ) ) {
1332                                         $element[] = $this->emailUserLink();
1333                                 }
1334                         }
1335
1336                         $s = implode( $element, $sep );
1337
1338                         if ( $this->mTitle->getArticleId() ) {
1339                                 $s .= "\n<br />";
1340
1341                                 // Delete/protect/move links for privileged users
1342                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1343                                         $s .= $this->deleteThisPage();
1344                                 }
1345
1346                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1347                                         $s .= $sep . $this->protectThisPage();
1348                                 }
1349
1350                                 if ( $wgUser->isAllowed( 'move' ) ) {
1351                                         $s .= $sep . $this->moveThisPage();
1352                                 }
1353                         }
1354
1355                         $s .= "<br />\n" . $this->otherLanguages();
1356                 }
1357
1358                 return $s;
1359         }
1360
1361         function pageStats() {
1362                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1363                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1364
1365                 $oldid = $wgRequest->getVal( 'oldid' );
1366                 $diff = $wgRequest->getVal( 'diff' );
1367
1368                 if ( !$wgOut->isArticle() ) {
1369                         return '';
1370                 }
1371
1372                 if ( !$wgArticle instanceof Article ) {
1373                         return '';
1374                 }
1375
1376                 if ( isset( $oldid ) || isset( $diff ) ) {
1377                         return '';
1378                 }
1379
1380                 if ( 0 == $wgArticle->getID() ) {
1381                         return '';
1382                 }
1383
1384                 $s = '';
1385
1386                 if ( !$wgDisableCounters ) {
1387                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1388
1389                         if ( $count ) {
1390                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1391                         }
1392                 }
1393
1394                 if ( $wgMaxCredits != 0 ) {
1395                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1396                 } else {
1397                         $s .= $this->lastModified();
1398                 }
1399
1400                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1401                         $dbr = wfGetDB( DB_SLAVE );
1402                         $res = $dbr->select(
1403                                 'watchlist',
1404                                 array( 'COUNT(*) AS n' ),
1405                                 array(
1406                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1407                                         'wl_namespace' => $this->mTitle->getNamespace()
1408                                 ),
1409                                 __METHOD__
1410                         );
1411                         $x = $dbr->fetchObject( $res );
1412
1413                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1414                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1415                         );
1416                 }
1417
1418                 return $s . ' ' .  $this->getCopyright();
1419         }
1420
1421         function getCopyright( $type = 'detect' ) {
1422                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1423
1424                 if ( $type == 'detect' ) {
1425                         $diff = $wgRequest->getVal( 'diff' );
1426                         $isCur = $wgArticle && $wgArticle->isCurrent();
1427
1428                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1429                                 $type = 'history';
1430                         } else {
1431                                 $type = 'normal';
1432                         }
1433                 }
1434
1435                 if ( $type == 'history' ) {
1436                         $msg = 'history_copyright';
1437                 } else {
1438                         $msg = 'copyright';
1439                 }
1440
1441                 $out = '';
1442
1443                 if ( $wgRightsPage ) {
1444                         $title = Title::newFromText( $wgRightsPage );
1445                         $link = $this->linkKnown( $title, $wgRightsText );
1446                 } elseif ( $wgRightsUrl ) {
1447                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1448                 } elseif ( $wgRightsText ) {
1449                         $link = $wgRightsText;
1450                 } else {
1451                         # Give up now
1452                         return $out;
1453                 }
1454
1455                 // Allow for site and per-namespace customization of copyright notice.
1456                 $forContent = true;
1457
1458                 if ( isset( $wgArticle ) ) {
1459                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1460                 }
1461
1462                 if ( $forContent ) {
1463                         $out .= wfMsgForContent( $msg, $link );
1464                 } else {
1465                         $out .= wfMsg( $msg, $link );
1466                 }
1467
1468                 return $out;
1469         }
1470
1471         function getCopyrightIcon() {
1472                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1473
1474                 $out = '';
1475
1476                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1477                         $out = $wgCopyrightIcon;
1478                 } elseif ( $wgRightsIcon ) {
1479                         $icon = htmlspecialchars( $wgRightsIcon );
1480
1481                         if ( $wgRightsUrl ) {
1482                                 $url = htmlspecialchars( $wgRightsUrl );
1483                                 $out .= '<a href="' . $url . '">';
1484                         }
1485
1486                         $text = htmlspecialchars( $wgRightsText );
1487                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1488
1489                         if ( $wgRightsUrl ) {
1490                                 $out .= '</a>';
1491                         }
1492                 }
1493
1494                 return $out;
1495         }
1496
1497         /**
1498          * Gets the powered by MediaWiki icon.
1499          * @return string
1500          */
1501         function getPoweredBy() {
1502                 global $wgStylePath;
1503
1504                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1505                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1506
1507                 return $img;
1508         }
1509
1510         function lastModified() {
1511                 global $wgLang, $wgArticle;
1512
1513                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1514                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1515                 } else {
1516                         $timestamp = $wgArticle->getTimestamp();
1517                 }
1518
1519                 if ( $timestamp ) {
1520                         $d = $wgLang->date( $timestamp, true );
1521                         $t = $wgLang->time( $timestamp, true );
1522                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1523                 } else {
1524                         $s = '';
1525                 }
1526
1527                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1528                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1529                 }
1530
1531                 return $s;
1532         }
1533
1534         function logoText( $align = '' ) {
1535                 if ( $align != '' ) {
1536                         $a = " align='{$align}'";
1537                 } else {
1538                         $a = '';
1539                 }
1540
1541                 $mp = wfMsg( 'mainpage' );
1542                 $mptitle = Title::newMainPage();
1543                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1544
1545                 $logourl = $this->getLogo();
1546                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1547
1548                 return $s;
1549         }
1550
1551         /**
1552          * Show a drop-down box of special pages
1553          */
1554         function specialPagesList() {
1555                 global $wgContLang, $wgServer, $wgRedirectScript;
1556
1557                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1558
1559                 foreach ( $pages as $name => $page ) {
1560                         $pages[$name] = $page->getDescription();
1561                 }
1562
1563                 $go = wfMsg( 'go' );
1564                 $sp = wfMsg( 'specialpages' );
1565                 $spp = $wgContLang->specialPage( 'Specialpages' );
1566
1567                 $s = '<form id="specialpages" method="get" ' .
1568                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1569                 $s .= "<select name=\"wpDropdown\">\n";
1570                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1571
1572
1573                 foreach ( $pages as $name => $desc ) {
1574                         $p = $wgContLang->specialPage( $name );
1575                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1576                 }
1577
1578                 $s .= "</select>\n";
1579                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1580                 $s .= "</form>\n";
1581
1582                 return $s;
1583         }
1584
1585         /**
1586          * Gets the link to the wiki's main page.
1587          * @return string
1588          */
1589         function mainPageLink() {
1590                 $s = $this->link(
1591                         Title::newMainPage(),
1592                         wfMsg( 'mainpage' ),
1593                         array(),
1594                         array(),
1595                         array( 'known', 'noclasses' )
1596                 );
1597
1598                 return $s;
1599         }
1600
1601         private function footerLink( $desc, $page ) {
1602                 // if the link description has been set to "-" in the default language,
1603                 if ( wfMsgForContent( $desc )  == '-' ) {
1604                         // then it is disabled, for all languages.
1605                         return '';
1606                 } else {
1607                         // Otherwise, we display the link for the user, described in their
1608                         // language (which may or may not be the same as the default language),
1609                         // but we make the link target be the one site-wide page.
1610                         $title = Title::newFromText( wfMsgForContent( $page ) );
1611
1612                         return $this->linkKnown(
1613                                 $title,
1614                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1615                         );
1616                 }
1617         }
1618
1619         /**
1620          * Gets the link to the wiki's privacy policy page.
1621          */
1622         function privacyLink() {
1623                 return $this->footerLink( 'privacy', 'privacypage' );
1624         }
1625
1626         /**
1627          * Gets the link to the wiki's about page.
1628          */
1629         function aboutLink() {
1630                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1631         }
1632
1633         /**
1634          * Gets the link to the wiki's general disclaimers page.
1635          */
1636         function disclaimerLink() {
1637                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1638         }
1639
1640         function editThisPage() {
1641                 global $wgOut;
1642
1643                 if ( !$wgOut->isArticleRelated() ) {
1644                         $s = wfMsg( 'protectedpage' );
1645                 } else {
1646                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1647                                 $t = wfMsg( 'editthispage' );
1648                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1649                                 $t = wfMsg( 'create-this-page' );
1650                         } else {
1651                                 $t = wfMsg( 'viewsource' );
1652                         }
1653
1654                         $s = $this->link(
1655                                 $this->mTitle,
1656                                 $t,
1657                                 array(),
1658                                 $this->editUrlOptions(),
1659                                 array( 'known', 'noclasses' )
1660                         );
1661                 }
1662
1663                 return $s;
1664         }
1665
1666         /**
1667          * Return URL options for the 'edit page' link.
1668          * This may include an 'oldid' specifier, if the current page view is such.
1669          *
1670          * @return array
1671          * @private
1672          */
1673         function editUrlOptions() {
1674                 global $wgArticle;
1675
1676                 $options = array( 'action' => 'edit' );
1677
1678                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1679                         $options['oldid'] = intval( $this->mRevisionId );
1680                 }
1681
1682                 return $options;
1683         }
1684
1685         function deleteThisPage() {
1686                 global $wgUser, $wgRequest;
1687
1688                 $diff = $wgRequest->getVal( 'diff' );
1689
1690                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1691                         $t = wfMsg( 'deletethispage' );
1692
1693                         $s = $this->link(
1694                                 $this->mTitle,
1695                                 $t,
1696                                 array(),
1697                                 array( 'action' => 'delete' ),
1698                                 array( 'known', 'noclasses' )
1699                         );
1700                 } else {
1701                         $s = '';
1702                 }
1703
1704                 return $s;
1705         }
1706
1707         function protectThisPage() {
1708                 global $wgUser, $wgRequest;
1709
1710                 $diff = $wgRequest->getVal( 'diff' );
1711
1712                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1713                         if ( $this->mTitle->isProtected() ) {
1714                                 $text = wfMsg( 'unprotectthispage' );
1715                                 $query = array( 'action' => 'unprotect' );
1716                         } else {
1717                                 $text = wfMsg( 'protectthispage' );
1718                                 $query = array( 'action' => 'protect' );
1719                         }
1720
1721                         $s = $this->link(
1722                                 $this->mTitle,
1723                                 $text,
1724                                 array(),
1725                                 $query,
1726                                 array( 'known', 'noclasses' )
1727                         );
1728                 } else {
1729                         $s = '';
1730                 }
1731
1732                 return $s;
1733         }
1734
1735         function watchThisPage() {
1736                 global $wgOut;
1737                 ++$this->mWatchLinkNum;
1738
1739                 if ( $wgOut->isArticleRelated() ) {
1740                         if ( $this->mTitle->userIsWatching() ) {
1741                                 $text = wfMsg( 'unwatchthispage' );
1742                                 $query = array( 'action' => 'unwatch' );
1743                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1744                         } else {
1745                                 $text = wfMsg( 'watchthispage' );
1746                                 $query = array( 'action' => 'watch' );
1747                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1748                         }
1749
1750                         $s = $this->link(
1751                                 $this->mTitle,
1752                                 $text,
1753                                 array( 'id' => $id ),
1754                                 $query,
1755                                 array( 'known', 'noclasses' )
1756                         );
1757                 } else {
1758                         $s = wfMsg( 'notanarticle' );
1759                 }
1760
1761                 return $s;
1762         }
1763
1764         function moveThisPage() {
1765                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1766                         return $this->link(
1767                                 SpecialPage::getTitleFor( 'Movepage' ),
1768                                 wfMsg( 'movethispage' ),
1769                                 array(),
1770                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1771                                 array( 'known', 'noclasses' )
1772                         );
1773                 } else {
1774                         // no message if page is protected - would be redundant
1775                         return '';
1776                 }
1777         }
1778
1779         function historyLink() {
1780                 return $this->link(
1781                         $this->mTitle,
1782                         wfMsgHtml( 'history' ),
1783                         array( 'rel' => 'archives' ),
1784                         array( 'action' => 'history' )
1785                 );
1786         }
1787
1788         function whatLinksHere() {
1789                 return $this->link(
1790                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1791                         wfMsgHtml( 'whatlinkshere' ),
1792                         array(),
1793                         array(),
1794                         array( 'known', 'noclasses' )
1795                 );
1796         }
1797
1798         function userContribsLink() {
1799                 return $this->link(
1800                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1801                         wfMsgHtml( 'contributions' ),
1802                         array(),
1803                         array(),
1804                         array( 'known', 'noclasses' )
1805                 );
1806         }
1807
1808         function showEmailUser( $id ) {
1809                 global $wgUser;
1810                 $targetUser = User::newFromId( $id );
1811                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1812                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1813         }
1814
1815         function emailUserLink() {
1816                 return $this->link(
1817                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1818                         wfMsg( 'emailuser' ),
1819                         array(),
1820                         array(),
1821                         array( 'known', 'noclasses' )
1822                 );
1823         }
1824
1825         function watchPageLinksLink() {
1826                 global $wgOut;
1827
1828                 if ( !$wgOut->isArticleRelated() ) {
1829                         return '(' . wfMsg( 'notanarticle' ) . ')';
1830                 } else {
1831                         return $this->link(
1832                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1833                                 wfMsg( 'recentchangeslinked-toolbox' ),
1834                                 array(),
1835                                 array(),
1836                                 array( 'known', 'noclasses' )
1837                         );
1838                 }
1839         }
1840
1841         function trackbackLink() {
1842                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1843                         . wfMsg( 'trackbacklink' ) . '</a>';
1844         }
1845
1846         function otherLanguages() {
1847                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1848
1849                 if ( $wgHideInterlanguageLinks ) {
1850                         return '';
1851                 }
1852
1853                 $a = $wgOut->getLanguageLinks();
1854
1855                 if ( 0 == count( $a ) ) {
1856                         return '';
1857                 }
1858
1859                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1860                 $first = true;
1861
1862                 if ( $wgContLang->isRTL() ) {
1863                         $s .= '<span dir="LTR">';
1864                 }
1865
1866                 foreach ( $a as $l ) {
1867                         if ( !$first ) {
1868                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1869                         }
1870
1871                         $first = false;
1872
1873                         $nt = Title::newFromText( $l );
1874                         $url = $nt->escapeFullURL();
1875                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1876                         $title = htmlspecialchars( $nt->getText() );
1877
1878                         if ( $text == '' ) {
1879                                 $text = $l;
1880                         }
1881
1882                         $style = $this->getExternalLinkAttributes();
1883                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1884                 }
1885
1886                 if ( $wgContLang->isRTL() ) {
1887                         $s .= '</span>';
1888                 }
1889
1890                 return $s;
1891         }
1892
1893         function talkLink() {
1894                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1895                         # No discussion links for special pages
1896                         return '';
1897                 }
1898
1899                 $linkOptions = array();
1900
1901                 if ( $this->mTitle->isTalkPage() ) {
1902                         $link = $this->mTitle->getSubjectPage();
1903                         switch( $link->getNamespace() ) {
1904                                 case NS_MAIN:
1905                                         $text = wfMsg( 'articlepage' );
1906                                         break;
1907                                 case NS_USER:
1908                                         $text = wfMsg( 'userpage' );
1909                                         break;
1910                                 case NS_PROJECT:
1911                                         $text = wfMsg( 'projectpage' );
1912                                         break;
1913                                 case NS_FILE:
1914                                         $text = wfMsg( 'imagepage' );
1915                                         # Make link known if image exists, even if the desc. page doesn't.
1916                                         if ( wfFindFile( $link ) )
1917                                                 $linkOptions[] = 'known';
1918                                         break;
1919                                 case NS_MEDIAWIKI:
1920                                         $text = wfMsg( 'mediawikipage' );
1921                                         break;
1922                                 case NS_TEMPLATE:
1923                                         $text = wfMsg( 'templatepage' );
1924                                         break;
1925                                 case NS_HELP:
1926                                         $text = wfMsg( 'viewhelppage' );
1927                                         break;
1928                                 case NS_CATEGORY:
1929                                         $text = wfMsg( 'categorypage' );
1930                                         break;
1931                                 default:
1932                                         $text = wfMsg( 'articlepage' );
1933                         }
1934                 } else {
1935                         $link = $this->mTitle->getTalkPage();
1936                         $text = wfMsg( 'talkpage' );
1937                 }
1938
1939                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1940
1941                 return $s;
1942         }
1943
1944         function commentLink() {
1945                 global $wgOut;
1946
1947                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1948                         return '';
1949                 }
1950
1951                 # __NEWSECTIONLINK___ changes behaviour here
1952                 # If it is present, the link points to this page, otherwise
1953                 # it points to the talk page
1954                 if ( $this->mTitle->isTalkPage() ) {
1955                         $title = $this->mTitle;
1956                 } elseif ( $wgOut->showNewSectionLink() ) {
1957                         $title = $this->mTitle;
1958                 } else {
1959                         $title = $this->mTitle->getTalkPage();
1960                 }
1961
1962                 return $this->link(
1963                         $title,
1964                         wfMsg( 'postcomment' ),
1965                         array(),
1966                         array(
1967                                 'action' => 'edit',
1968                                 'section' => 'new'
1969                         ),
1970                         array( 'known', 'noclasses' )
1971                 );
1972         }
1973
1974         function getUploadLink() {
1975                 global $wgUploadNavigationUrl;
1976
1977                 if ( $wgUploadNavigationUrl ) {
1978                         # Using an empty class attribute to avoid automatic setting of "external" class
1979                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
1980                 } else {
1981                         return $this->link(
1982                                 SpecialPage::getTitleFor( 'Upload' ),
1983                                 wfMsgHtml( 'upload' ),
1984                                 array(),
1985                                 array(),
1986                                 array( 'known', 'noclasses' )
1987                         );
1988                 }
1989         }
1990
1991         /* these are used extensively in SkinTemplate, but also some other places */
1992         static function makeMainPageUrl( $urlaction = '' ) {
1993                 $title = Title::newMainPage();
1994                 self::checkTitle( $title, '' );
1995
1996                 return $title->getLocalURL( $urlaction );
1997         }
1998
1999         static function makeSpecialUrl( $name, $urlaction = '' ) {
2000                 $title = SpecialPage::getTitleFor( $name );
2001                 return $title->getLocalURL( $urlaction );
2002         }
2003
2004         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2005                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2006                 return $title->getLocalURL( $urlaction );
2007         }
2008
2009         static function makeI18nUrl( $name, $urlaction = '' ) {
2010                 $title = Title::newFromText( wfMsgForContent( $name ) );
2011                 self::checkTitle( $title, $name );
2012                 return $title->getLocalURL( $urlaction );
2013         }
2014
2015         static function makeUrl( $name, $urlaction = '' ) {
2016                 $title = Title::newFromText( $name );
2017                 self::checkTitle( $title, $name );
2018
2019                 return $title->getLocalURL( $urlaction );
2020         }
2021
2022         /**
2023          * If url string starts with http, consider as external URL, else
2024          * internal
2025          */
2026         static function makeInternalOrExternalUrl( $name ) {
2027                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2028                         return $name;
2029                 } else {
2030                         return self::makeUrl( $name );
2031                 }
2032         }
2033
2034         # this can be passed the NS number as defined in Language.php
2035         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2036                 $title = Title::makeTitleSafe( $namespace, $name );
2037                 self::checkTitle( $title, $name );
2038
2039                 return $title->getLocalURL( $urlaction );
2040         }
2041
2042         /* these return an array with the 'href' and boolean 'exists' */
2043         static function makeUrlDetails( $name, $urlaction = '' ) {
2044                 $title = Title::newFromText( $name );
2045                 self::checkTitle( $title, $name );
2046
2047                 return array(
2048                         'href' => $title->getLocalURL( $urlaction ),
2049                         'exists' => $title->getArticleID() != 0,
2050                 );
2051         }
2052
2053         /**
2054          * Make URL details where the article exists (or at least it's convenient to think so)
2055          */
2056         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2057                 $title = Title::newFromText( $name );
2058                 self::checkTitle( $title, $name );
2059
2060                 return array(
2061                         'href' => $title->getLocalURL( $urlaction ),
2062                         'exists' => true
2063                 );
2064         }
2065
2066         # make sure we have some title to operate on
2067         static function checkTitle( &$title, $name ) {
2068                 if ( !is_object( $title ) ) {
2069                         $title = Title::newFromText( $name );
2070                         if ( !is_object( $title ) ) {
2071                                 $title = Title::newFromText( '--error: link target missing--' );
2072                         }
2073                 }
2074         }
2075
2076         /**
2077          * Build an array that represents the sidebar(s), the navigation bar among them
2078          *
2079          * @return array
2080          */
2081         function buildSidebar() {
2082                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2083                 global $wgLang;
2084                 wfProfileIn( __METHOD__ );
2085
2086                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2087
2088                 if ( $wgEnableSidebarCache ) {
2089                         $cachedsidebar = $parserMemc->get( $key );
2090                         if ( $cachedsidebar ) {
2091                                 wfProfileOut( __METHOD__ );
2092                                 return $cachedsidebar;
2093                         }
2094                 }
2095
2096                 $bar = array();
2097                 $this->addToSidebar( $bar, 'sidebar' );
2098
2099                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2100                 if ( $wgEnableSidebarCache ) {
2101                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2102                 }
2103
2104                 wfProfileOut( __METHOD__ );
2105                 return $bar;
2106         }
2107         /**
2108          * Add content from a sidebar system message
2109          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2110          *
2111          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2112          *
2113          * @param &$bar array
2114          * @param $message String
2115          */
2116         function addToSidebar( &$bar, $message ) {
2117                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2118         }
2119
2120         /**
2121          * Add content from plain text
2122          * @since 1.17
2123          * @param &$bar array
2124          * @param $text string
2125          */
2126         function addToSidebarPlain( &$bar, $text ) {
2127                 $lines = explode( "\n", $text );
2128                 $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.
2129
2130                 $heading = '';
2131
2132                 foreach ( $lines as $line ) {
2133                         if ( strpos( $line, '*' ) !== 0 ) {
2134                                 continue;
2135                         }
2136
2137                         if ( strpos( $line, '**' ) !== 0 ) {
2138                                 $heading = trim( $line, '* ' );
2139                                 if ( !array_key_exists( $heading, $bar ) ) {
2140                                         $bar[$heading] = array();
2141                                 }
2142                         } else {
2143                                 $line = trim( $line, '* ' );
2144
2145                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2146                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2147                                         $link = wfMsgForContent( $line[0] );
2148
2149                                         if ( $link == '-' ) {
2150                                                 continue;
2151                                         }
2152
2153                                         $text = wfMsgExt( $line[1], 'parsemag' );
2154
2155                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2156                                                 $text = $line[1];
2157                                         }
2158
2159                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2160                                                 $link = $line[0];
2161                                         }
2162
2163                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2164                                                 $href = $link;
2165                                         } else {
2166                                                 $title = Title::newFromText( $link );
2167
2168                                                 if ( $title ) {
2169                                                         $title = $title->fixSpecialName();
2170                                                         $href = $title->getLocalURL();
2171                                                 } else {
2172                                                         $href = 'INVALID-TITLE';
2173                                                 }
2174                                         }
2175
2176                                         $bar[$heading][] = array(
2177                                                 'text' => $text,
2178                                                 'href' => $href,
2179                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2180                                                 'active' => false
2181                                         );
2182                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2183                                         global $wgParser, $wgTitle;
2184
2185                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2186
2187                                         if ( is_null( $wgParser->mOptions ) ) {
2188                                                 $wgParser->mOptions = new ParserOptions();
2189                                         }
2190
2191                                         $wgParser->mOptions->setEditSection( false );
2192                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2193                                 } else {
2194                                         continue;
2195                                 }
2196                         }
2197                 }
2198
2199                 if ( count( $wikiBar ) > 0 ) {
2200                         $bar = array_merge( $bar, $wikiBar );
2201                 }
2202
2203                 return $bar;
2204         }
2205
2206         /**
2207          * Should we include common/wikiprintable.css?  Skins that have their own
2208          * print stylesheet should override this and return false.  (This is an
2209          * ugly hack to get Monobook to play nicely with
2210          * OutputPage::headElement().)
2211          *
2212          * @return bool
2213          */
2214         public function commonPrintStylesheet() {
2215                 return true;
2216         }
2217
2218         /**
2219          * Gets new talk page messages for the current user.
2220          * @return MediaWiki message or if no new talk page messages, nothing
2221          */
2222         function getNewtalks() {
2223                 global $wgUser, $wgOut;
2224
2225                 $newtalks = $wgUser->getNewMessageLinks();
2226                 $ntl = '';
2227
2228                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2229                         $userTitle = $this->mUser->getUserPage();
2230                         $userTalkTitle = $userTitle->getTalkPage();
2231
2232                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2233                                 $newMessagesLink = $this->link(
2234                                         $userTalkTitle,
2235                                         wfMsgHtml( 'newmessageslink' ),
2236                                         array(),
2237                                         array( 'redirect' => 'no' ),
2238                                         array( 'known', 'noclasses' )
2239                                 );
2240
2241                                 $newMessagesDiffLink = $this->link(
2242                                         $userTalkTitle,
2243                                         wfMsgHtml( 'newmessagesdifflink' ),
2244                                         array(),
2245                                         array( 'diff' => 'cur' ),
2246                                         array( 'known', 'noclasses' )
2247                                 );
2248
2249                                 $ntl = wfMsg(
2250                                         'youhavenewmessages',
2251                                         $newMessagesLink,
2252                                         $newMessagesDiffLink
2253                                 );
2254                                 # Disable Squid cache
2255                                 $wgOut->setSquidMaxage( 0 );
2256                         }
2257                 } elseif ( count( $newtalks ) ) {
2258                         // _>" " for BC <= 1.16
2259                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2260                         $msgs = array();
2261
2262                         foreach ( $newtalks as $newtalk ) {
2263                                 $msgs[] = Xml::element(
2264                                         'a',
2265                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2266                                 );
2267                         }
2268                         $parts = implode( $sep, $msgs );
2269                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2270                         $wgOut->setSquidMaxage( 0 );
2271                 }
2272
2273                 return $ntl;
2274         }
2275 }