includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30
  31         /** Constructor, call parent constructor */
  32         function __construct() {
  33                 parent::__construct();
  34         }
  35
  36         /**
  37          * Fetch the set of available skins.
  38          * @return array of strings
  39          */
  40         static function getSkinNames() {
  41                 global $wgValidSkinNames;
  42                 static $skinsInitialised = false;
  43
  44                 if ( !$skinsInitialised ) {
  45                         # Get a list of available skins
  46                         # Build using the regular expression '^(.*).php$'
  47                         # Array keys are all lower case, array value keep the case used by filename
  48                         #
  49                         wfProfileIn( __METHOD__ . '-init' );
  50
  51                         global $wgStyleDirectory;
  52
  53                         $skinDir = dir( $wgStyleDirectory );
  54
  55                         # while code from www.php.net
  56                         while ( false !== ( $file = $skinDir->read() ) ) {
  57                                 // Skip non-PHP files, hidden files, and '.dep' includes
  58                                 $matches = array();
  59
  60                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  61                                         $aSkin = $matches[1];
  62                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  63                                 }
  64                         }
  65                         $skinDir->close();
  66                         $skinsInitialised = true;
  67                         wfProfileOut( __METHOD__ . '-init' );
  68                 }
  69                 return $wgValidSkinNames;
  70         }
  71
  72         /**
  73          * Fetch the list of usable skins in regards to $wgSkipSkins.
  74          * Useful for Special:Preferences and other places where you
  75          * only want to show skins users _can_ use.
  76          * @return array of strings
  77          */
  78         public static function getUsableSkins() {
  79                 global $wgSkipSkins;
  80
  81                 $usableSkins = self::getSkinNames();
  82
  83                 foreach ( $wgSkipSkins as $skip ) {
  84                         unset( $usableSkins[$skip] );
  85                 }
  86
  87                 return $usableSkins;
  88         }
  89
  90         /**
  91          * Normalize a skin preference value to a form that can be loaded.
  92          * If a skin can't be found, it will fall back to the configured
  93          * default (or the old 'Classic' skin if that's broken).
  94          * @param $key String: 'monobook', 'standard', etc.
  95          * @return string
  96          */
  97         static function normalizeKey( $key ) {
  98                 global $wgDefaultSkin;
  99
 100                 $skinNames = Skin::getSkinNames();
 101
 102                 if ( $key == '' ) {
 103                         // Don't return the default immediately;
 104                         // in a misconfiguration we need to fall back.
 105                         $key = $wgDefaultSkin;
 106                 }
 107
 108                 if ( isset( $skinNames[$key] ) ) {
 109                         return $key;
 110                 }
 111
 112                 // Older versions of the software used a numeric setting
 113                 // in the user preferences.
 114                 $fallback = array(
 115                         0 => $wgDefaultSkin,
 116                         1 => 'nostalgia',
 117                         2 => 'cologneblue'
 118                 );
 119
 120                 if ( isset( $fallback[$key] ) ) {
 121                         $key = $fallback[$key];
 122                 }
 123
 124                 if ( isset( $skinNames[$key] ) ) {
 125                         return $key;
 126                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 127                         return $wgDefaultSkin;
 128                 } else {
 129                         return 'vector';
 130                 }
 131         }
 132
 133         /**
 134          * Factory method for loading a skin of a given type
 135          * @param $key String: 'monobook', 'standard', etc.
 136          * @return Skin
 137          */
 138         static function &newFromKey( $key ) {
 139                 global $wgStyleDirectory;
 140
 141                 $key = Skin::normalizeKey( $key );
 142
 143                 $skinNames = Skin::getSkinNames();
 144                 $skinName = $skinNames[$key];
 145                 $className = 'Skin' . ucfirst( $key );
 146
 147                 # Grab the skin class and initialise it.
 148                 if ( !class_exists( $className ) ) {
 149                         // Preload base classes to work around APC/PHP5 bug
 150                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 151
 152                         if ( file_exists( $deps ) ) {
 153                                 include_once( $deps );
 154                         }
 155                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 156
 157                         # Check if we got if not failback to default skin
 158                         if ( !class_exists( $className ) ) {
 159                                 # DO NOT die if the class isn't found. This breaks maintenance
 160                                 # scripts and can cause a user account to be unrecoverable
 161                                 # except by SQL manipulation if a previously valid skin name
 162                                 # is no longer valid.
 163                                 wfDebug( "Skin class does not exist: $className\n" );
 164                                 $className = 'SkinVector';
 165                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 166                         }
 167                 }
 168                 $skin = new $className;
 169                 return $skin;
 170         }
 171
 172         /** @return string path to the skin stylesheet */
 173         function getStylesheet() {
 174                 return 'common/wikistandard.css';
 175         }
 176
 177         /** @return string skin name */
 178         public function getSkinName() {
 179                 return $this->skinname;
 180         }
 181
 182         function qbSetting() {
 183                 global $wgOut, $wgUser;
 184
 185                 if ( $wgOut->isQuickbarSuppressed() ) {
 186                         return 0;
 187                 }
 188
 189                 $q = $wgUser->getOption( 'quickbar', 0 );
 190
 191                 return $q;
 192         }
 193
 194         function initPage( OutputPage $out ) {
 195                 global $wgFavicon, $wgAppleTouchIcon;
 196
 197                 wfProfileIn( __METHOD__ );
 198
 199                 # Generally the order of the favicon and apple-touch-icon links
 200                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 201                 # uses whichever one appears later in the HTML source. Make sure
 202                 # apple-touch-icon is specified first to avoid this.
 203                 if ( false !== $wgAppleTouchIcon ) {
 204                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 205                 }
 206
 207                 if ( false !== $wgFavicon ) {
 208                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 209                 }
 210
 211                 # OpenSearch description link
 212                 $out->addLink( array(
 213                         'rel' => 'search',
 214                         'type' => 'application/opensearchdescription+xml',
 215                         'href' => wfScript( 'opensearch_desc' ),
 216                         'title' => wfMsgForContent( 'opensearch-desc' ),
 217                 ) );
 218
 219                 $this->addMetadataLinks( $out );
 220
 221                 $this->mRevisionId = $out->mRevisionId;
 222
 223                 $this->preloadExistence();
 224
 225                 wfProfileOut( __METHOD__ );
 226         }
 227
 228         /**
 229          * Preload the existence of three commonly-requested pages in a single query
 230          */
 231         function preloadExistence() {
 232                 global $wgUser;
 233
 234                 // User/talk link
 235                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 236
 237                 // Other tab link
 238                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 239                         // nothing
 240                 } elseif ( $this->mTitle->isTalkPage() ) {
 241                         $titles[] = $this->mTitle->getSubjectPage();
 242                 } else {
 243                         $titles[] = $this->mTitle->getTalkPage();
 244                 }
 245
 246                 $lb = new LinkBatch( $titles );
 247                 $lb->setCaller( __METHOD__ );
 248                 $lb->execute();
 249         }
 250
 251         /**
 252          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 253          * output.
 254          * @param $out Object: instance of OutputPage
 255          */
 256         function addMetadataLinks( OutputPage $out ) {
 257                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 258                 global $wgRightsPage, $wgRightsUrl;
 259
 260                 if ( $out->isArticleRelated() ) {
 261                         # note: buggy CC software only reads first "meta" link
 262                         if ( $wgEnableCreativeCommonsRdf ) {
 263                                 $out->addMetadataLink( array(
 264                                         'title' => 'Creative Commons',
 265                                         'type' => 'application/rdf+xml',
 266                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 267                                 );
 268                         }
 269
 270                         if ( $wgEnableDublinCoreRdf ) {
 271                                 $out->addMetadataLink( array(
 272                                         'title' => 'Dublin Core',
 273                                         'type' => 'application/rdf+xml',
 274                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 275                                 );
 276                         }
 277                 }
 278                 $copyright = '';
 279                 if ( $wgRightsPage ) {
 280                         $copy = Title::newFromText( $wgRightsPage );
 281
 282                         if ( $copy ) {
 283                                 $copyright = $copy->getLocalURL();
 284                         }
 285                 }
 286
 287                 if ( !$copyright && $wgRightsUrl ) {
 288                         $copyright = $wgRightsUrl;
 289                 }
 290
 291                 if ( $copyright ) {
 292                         $out->addLink( array(
 293                                 'rel' => 'copyright',
 294                                 'href' => $copyright )
 295                         );
 296                 }
 297         }
 298
 299         /**
 300          * Set some local variables
 301          */
 302         protected function setMembers() {
 303                 global $wgUser;
 304                 $this->mUser = $wgUser;
 305                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 306                 $this->usercss = false;
 307         }
 308
 309         /**
 310          * Set the title
 311          * @param $t Title object to use
 312          */
 313         public function setTitle( $t ) {
 314                 $this->mTitle = $t;
 315         }
 316
 317         /** Get the title */
 318         public function getTitle() {
 319                 return $this->mTitle;
 320         }
 321
 322         /**
 323          * Outputs the HTML generated by other functions.
 324          * @param $out Object: instance of OutputPage
 325          */
 326         function outputPage( OutputPage $out ) {
 327                 global $wgDebugComments;
 328                 wfProfileIn( __METHOD__ );
 329
 330                 $this->setMembers();
 331                 $this->initPage( $out );
 332
 333                 // See self::afterContentHook() for documentation
 334                 $afterContent = $this->afterContentHook();
 335
 336                 $out->out( $out->headElement( $this ) );
 337
 338                 if ( $wgDebugComments ) {
 339                         $out->out( "<!-- Wiki debugging output:\n" .
 340                           $out->mDebugtext . "-->\n" );
 341                 }
 342
 343                 $out->out( $this->beforeContent() );
 344
 345                 $out->out( $out->mBodytext . "\n" );
 346
 347                 $out->out( $this->afterContent() );
 348
 349                 $out->out( $afterContent );
 350
 351                 $out->out( $this->bottomScripts( $out ) );
 352
 353                 $out->out( wfReportTime() );
 354
 355                 $out->out( "\n</body></html>" );
 356                 wfProfileOut( __METHOD__ );
 357         }
 358
 359         static function makeVariablesScript( $data ) {
 360                 if ( $data ) {
 361                         return Html::inlineScript(
 362                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 363                         );
 364                 } else {
 365                         return '';
 366                 }
 367         }
 368
 369         /**
 370          * Make a <script> tag containing global variables
 371          * @param $skinName string Name of the skin
 372          * The odd calling convention is for backwards compatibility
 373          * @todo FIXME: Make this not depend on $wgTitle!
 374          *
 375          * Do not add things here which can be evaluated in ResourceLoaderStartupScript - in other words, without state.
 376          * You will only be adding bloat to the page and causing page caches to have to be purged on configuration changes.
 377          */
 378         static function makeGlobalVariablesScript( $skinName ) {
 379                 global $wgTitle, $wgUser, $wgRequest, $wgArticle, $wgOut, $wgRestrictionTypes, $wgUseAjax, $wgEnableMWSuggest;
 380
 381                 $ns = $wgTitle->getNamespace();
 382                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 383                 $vars = array(
 384                         'wgCanonicalNamespace' => $nsname,
 385                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 386                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 387                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 388                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 389                         'wgTitle' => $wgTitle->getText(),
 390                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 391                         'wgArticleId' => $wgTitle->getArticleId(),
 392                         'wgIsArticle' => $wgOut->isArticle(),
 393                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 394                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 395                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 396                         'wgCategories' => $wgOut->getCategories(),
 397                 );
 398                 foreach ( $wgRestrictionTypes as $type ) {
 399                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 400                 }
 401                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 402                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 403                 }
 404
 405                 // Allow extensions to add their custom variables to the global JS variables
 406                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 407
 408                 return self::makeVariablesScript( $vars );
 409         }
 410
 411         /**
 412          * To make it harder for someone to slip a user a fake
 413          * user-JavaScript or user-CSS preview, a random token
 414          * is associated with the login session. If it's not
 415          * passed back with the preview request, we won't render
 416          * the code.
 417          *
 418          * @param $action String: 'edit', 'submit' etc.
 419          * @return bool
 420          */
 421         public function userCanPreview( $action ) {
 422                 global $wgRequest, $wgUser;
 423
 424                 if ( $action != 'submit' ) {
 425                         return false;
 426                 }
 427                 if ( !$wgRequest->wasPosted() ) {
 428                         return false;
 429                 }
 430                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 431                         return false;
 432                 }
 433                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 434                         return false;
 435                 }
 436
 437                 return $wgUser->matchEditToken(
 438                         $wgRequest->getVal( 'wpEditToken' ) );
 439         }
 440
 441         /**
 442          * Generated JavaScript action=raw&gen=js
 443          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 444          * nated together.  For some bizarre reason, it does *not* return any
 445          * custom user JS from subpages.  Huh?
 446          *
 447          * There's absolutely no reason to have separate Monobook/Common JSes.
 448          * Any JS that cares can just check the skin variable generated at the
 449          * top.  For now Monobook.js will be maintained, but it should be consi-
 450          * dered deprecated.
 451          *
 452          * @param $skinName String: If set, overrides the skin name
 453          * @return string
 454          */
 455         public function generateUserJs( $skinName = null ) {
 456
 457                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 458
 459                 return '';
 460         }
 461
 462         /**
 463          * Generate user stylesheet for action=raw&gen=css
 464          */
 465         public function generateUserStylesheet() {
 466
 467                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 468
 469                 return '';
 470         }
 471
 472         /**
 473          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 474          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 475          */
 476         protected function reallyGenerateUserStylesheet() {
 477
 478                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 479
 480                 return '';
 481         }
 482
 483         /**
 484          * @private
 485          */
 486         function setupUserCss( OutputPage $out ) {
 487                 global $wgRequest;
 488                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs, $wgSquidMaxage;
 489
 490                 wfProfileIn( __METHOD__ );
 491
 492                 $this->setupSkinUserCss( $out );
 493
 494                 $siteargs = array(
 495                         'action' => 'raw',
 496                         'maxage' => $wgSquidMaxage,
 497                 );
 498
 499                 // Add any extension CSS
 500                 foreach ( $out->getExtStyle() as $url ) {
 501                         $out->addStyle( $url );
 502                 }
 503
 504                 // Per-site custom styles
 505                 if ( $wgUseSiteCss ) {
 506                         $out->addModuleStyles( 'site' );
 507                 }
 508
 509                 // Per-user custom styles
 510                 if ( $wgAllowUserCss ) {
 511                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getVal( 'action' ) ) ) {
 512                                 // @FIXME: properly escape the cdata!
 513                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 514                         } else {
 515                                 $out->addModuleStyles( 'user' );
 516                         }
 517                 }
 518
 519                 // Per-user preference styles
 520                 if ( $wgAllowUserCssPrefs ) {
 521                         $out->addModuleStyles( 'user.options' );
 522                 }
 523
 524                 wfProfileOut( __METHOD__ );
 525         }
 526
 527         /**
 528          * Get the query to generate a dynamic stylesheet
 529          *
 530          * @return array
 531          */
 532         public static function getDynamicStylesheetQuery() {
 533                 global $wgSquidMaxage;
 534
 535                 return array(
 536                                 'action' => 'raw',
 537                                 'maxage' => $wgSquidMaxage,
 538                                 'usemsgcache' => 'yes',
 539                                 'ctype' => 'text/css',
 540                                 'smaxage' => $wgSquidMaxage,
 541                         );
 542         }
 543
 544         /**
 545          * Add skin specific stylesheets
 546          * @param $out OutputPage
 547          */
 548         function setupSkinUserCss( OutputPage $out ) {
 549                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 550                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 551                 // TODO: When converting old skins to use ResourceLoader (or removing them) the following should be reconsidered
 552                 $out->addStyle( $this->getStylesheet() );
 553                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 554         }
 555
 556         function getPageClasses( $title ) {
 557                 $numeric = 'ns-' . $title->getNamespace();
 558
 559                 if ( $title->getNamespace() == NS_SPECIAL ) {
 560                         $type = 'ns-special';
 561                 } elseif ( $title->isTalkPage() ) {
 562                         $type = 'ns-talk';
 563                 } else {
 564                         $type = 'ns-subject';
 565                 }
 566
 567                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 568
 569                 return "$numeric $type $name";
 570         }
 571
 572         /**
 573          * This will be called by OutputPage::headElement when it is creating the
 574          * <body> tag, skins can override it if they have a need to add in any
 575          * body attributes or classes of their own.
 576          */
 577         function bodyAttributes( $out, &$bodyAttrs ) {
 578                 // does nothing by default
 579         }
 580
 581         /**
 582          * URL to the logo
 583          */
 584         function getLogo() {
 585                 global $wgLogo;
 586                 return $wgLogo;
 587         }
 588
 589         /**
 590          * This will be called immediately after the <body> tag.  Split into
 591          * two functions to make it easier to subclass.
 592          */
 593         function beforeContent() {
 594                 return $this->doBeforeContent();
 595         }
 596
 597         function doBeforeContent() {
 598                 global $wgContLang;
 599                 wfProfileIn( __METHOD__ );
 600
 601                 $s = '';
 602                 $qb = $this->qbSetting();
 603
 604                 $langlinks = $this->otherLanguages();
 605                 if ( $langlinks ) {
 606                         $rows = 2;
 607                         $borderhack = '';
 608                 } else {
 609                         $rows = 1;
 610                         $langlinks = false;
 611                         $borderhack = 'class="top"';
 612                 }
 613
 614                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 615                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 616
 617                 $shove = ( $qb != 0 );
 618                 $left = ( $qb == 1 || $qb == 3 );
 619
 620                 if ( $wgContLang->isRTL() ) {
 621                         $left = !$left;
 622                 }
 623
 624                 if ( !$shove ) {
 625                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 626                                 $this->logoText() . '</td>';
 627                 } elseif ( $left ) {
 628                         $s .= $this->getQuickbarCompensator( $rows );
 629                 }
 630
 631                 $l = $wgContLang->alignStart();
 632                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 633
 634                 $s .= $this->topLinks();
 635                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 636
 637                 $r = $wgContLang->alignEnd();
 638                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 639                 $s .= $this->nameAndLogin();
 640                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 641
 642                 if ( $langlinks ) {
 643                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 644                 }
 645
 646                 if ( $shove && !$left ) { # Right
 647                         $s .= $this->getQuickbarCompensator( $rows );
 648                 }
 649
 650                 $s .= "</tr>\n</table>\n</div>\n";
 651                 $s .= "\n<div id='article'>\n";
 652
 653                 $notice = wfGetSiteNotice();
 654
 655                 if ( $notice ) {
 656                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 657                 }
 658                 $s .= $this->pageTitle();
 659                 $s .= $this->pageSubtitle();
 660                 $s .= $this->getCategories();
 661
 662                 wfProfileOut( __METHOD__ );
 663                 return $s;
 664         }
 665
 666         function getCategoryLinks() {
 667                 global $wgOut, $wgUseCategoryBrowser;
 668                 global $wgContLang, $wgUser;
 669
 670                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 671                         return '';
 672                 }
 673
 674                 # Separator
 675                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 676
 677                 // Use Unicode bidi embedding override characters,
 678                 // to make sure links don't smash each other up in ugly ways.
 679                 $dir = $wgContLang->getDir();
 680                 $embed = "<span dir='$dir'>";
 681                 $pop = '</span>';
 682
 683                 $allCats = $wgOut->getCategoryLinks();
 684                 $s = '';
 685                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 686
 687                 if ( !empty( $allCats['normal'] ) ) {
 688                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 689
 690                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 691                         $s .= '<div id="mw-normal-catlinks">' .
 692                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 693                                 . $colon . $t . '</div>';
 694                 }
 695
 696                 # Hidden categories
 697                 if ( isset( $allCats['hidden'] ) ) {
 698                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 699                                 $class = 'mw-hidden-cats-user-shown';
 700                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 701                                 $class = 'mw-hidden-cats-ns-shown';
 702                         } else {
 703                                 $class = 'mw-hidden-cats-hidden';
 704                         }
 705
 706                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 707                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 708                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 709                                 '</div>';
 710                 }
 711
 712                 # optional 'dmoz-like' category browser. Will be shown under the list
 713                 # of categories an article belong to
 714                 if ( $wgUseCategoryBrowser ) {
 715                         $s .= '<br /><hr />';
 716
 717                         # get a big array of the parents tree
 718                         $parenttree = $this->mTitle->getParentCategoryTree();
 719                         # Skin object passed by reference cause it can not be
 720                         # accessed under the method subfunction drawCategoryBrowser
 721                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 722                         # Clean out bogus first entry and sort them
 723                         unset( $tempout[0] );
 724                         asort( $tempout );
 725                         # Output one per line
 726                         $s .= implode( "<br />\n", $tempout );
 727                 }
 728
 729                 return $s;
 730         }
 731
 732         /**
 733          * Render the array as a serie of links.
 734          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 735          * @param &skin Object: skin passed by reference
 736          * @return String separated by &gt;, terminate with "\n"
 737          */
 738         function drawCategoryBrowser( $tree, &$skin ) {
 739                 $return = '';
 740
 741                 foreach ( $tree as $element => $parent ) {
 742                         if ( empty( $parent ) ) {
 743                                 # element start a new list
 744                                 $return .= "\n";
 745                         } else {
 746                                 # grab the others elements
 747                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 748                         }
 749
 750                         # add our current element to the list
 751                         $eltitle = Title::newFromText( $element );
 752                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 753                 }
 754
 755                 return $return;
 756         }
 757
 758         function getCategories() {
 759                 $catlinks = $this->getCategoryLinks();
 760
 761                 $classes = 'catlinks';
 762
 763                 global $wgOut, $wgUser;
 764
 765                 // Check what we're showing
 766                 $allCats = $wgOut->getCategoryLinks();
 767                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 768                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 769
 770                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 771                         $classes .= ' catlinks-allhidden';
 772                 }
 773
 774                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 775         }
 776
 777         function getQuickbarCompensator( $rows = 1 ) {
 778                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 779         }
 780
 781         /**
 782          * This runs a hook to allow extensions placing their stuff after content
 783          * and article metadata (e.g. categories).
 784          * Note: This function has nothing to do with afterContent().
 785          *
 786          * This hook is placed here in order to allow using the same hook for all
 787          * skins, both the SkinTemplate based ones and the older ones, which directly
 788          * use this class to get their data.
 789          *
 790          * The output of this function gets processed in SkinTemplate::outputPage() for
 791          * the SkinTemplate based skins, all other skins should directly echo it.
 792          *
 793          * Returns an empty string by default, if not changed by any hook function.
 794          */
 795         protected function afterContentHook() {
 796                 $data = '';
 797
 798                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 799                         // adding just some spaces shouldn't toggle the output
 800                         // of the whole <div/>, so we use trim() here
 801                         if ( trim( $data ) != '' ) {
 802                                 // Doing this here instead of in the skins to
 803                                 // ensure that the div has the same ID in all
 804                                 // skins
 805                                 $data = "<div id='mw-data-after-content'>\n" .
 806                                         "\t$data\n" .
 807                                         "</div>\n";
 808                         }
 809                 } else {
 810                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 811                 }
 812
 813                 return $data;
 814         }
 815
 816         /**
 817          * Generate debug data HTML for displaying at the bottom of the main content
 818          * area.
 819          * @return String HTML containing debug data, if enabled (otherwise empty).
 820          */
 821         protected function generateDebugHTML() {
 822                 global $wgShowDebug, $wgOut;
 823
 824                 if ( $wgShowDebug ) {
 825                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 826                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 827                                 $listInternals . "</ul>\n";
 828                 }
 829
 830                 return '';
 831         }
 832
 833         private function formatDebugHTML( $debugText ) {
 834                 $lines = explode( "\n", $debugText );
 835                 $curIdent = 0;
 836                 $ret = '<li>';
 837
 838                 foreach ( $lines as $line ) {
 839                         $m = array();
 840                         $display = ltrim( $line );
 841                         $ident = strlen( $line ) - strlen( $display );
 842                         $diff = $ident - $curIdent;
 843
 844                         if ( $display == '' ) {
 845                                 $display = "\xc2\xa0";
 846                         }
 847
 848                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 849                                 $ident = $curIdent;
 850                                 $diff = 0;
 851                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 852                         } else {
 853                                 $display = htmlspecialchars( $display );
 854                         }
 855
 856                         if ( $diff < 0 ) {
 857                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 858                         } elseif ( $diff == 0 ) {
 859                                 $ret .= "</li><li>\n";
 860                         } else {
 861                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 862                         }
 863                         $ret .= $display . "\n";
 864
 865                         $curIdent = $ident;
 866                 }
 867
 868                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 869
 870                 return $ret;
 871         }
 872
 873         /**
 874          * This gets called shortly before the </body> tag.
 875          * @return String HTML to be put before </body>
 876          */
 877         function afterContent() {
 878                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 879                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 880         }
 881
 882         /**
 883          * This gets called shortly before the </body> tag.
 884          * @param $out OutputPage object
 885          * @return String HTML-wrapped JS code to be put before </body>
 886          */
 887         function bottomScripts( $out ) {
 888                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
 889                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 890
 891                 return $bottomScriptText;
 892         }
 893
 894         /** @return string Retrievied from HTML text */
 895         function printSource() {
 896                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
 897                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 898         }
 899
 900         function printFooter() {
 901                 return "<p>" .  $this->printSource() .
 902                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 903         }
 904
 905         /** overloaded by derived classes */
 906         function doAfterContent() {
 907                 return '</div></div>';
 908         }
 909
 910         function pageTitleLinks() {
 911                 global $wgOut, $wgUser, $wgRequest, $wgLang;
 912
 913                 $oldid = $wgRequest->getVal( 'oldid' );
 914                 $diff = $wgRequest->getVal( 'diff' );
 915                 $action = $wgRequest->getText( 'action' );
 916
 917                 $s[] = $this->printableLink();
 918                 $disclaimer = $this->disclaimerLink(); # may be empty
 919
 920                 if ( $disclaimer ) {
 921                         $s[] = $disclaimer;
 922                 }
 923
 924                 $privacy = $this->privacyLink(); # may be empty too
 925
 926                 if ( $privacy ) {
 927                         $s[] = $privacy;
 928                 }
 929
 930                 if ( $wgOut->isArticleRelated() ) {
 931                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
 932                                 $name = $this->mTitle->getDBkey();
 933                                 $image = wfFindFile( $this->mTitle );
 934
 935                                 if ( $image ) {
 936                                         $link = htmlspecialchars( $image->getURL() );
 937                                         $style = $this->getInternalLinkAttributes( $link, $name );
 938                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
 939                                 }
 940                         }
 941                 }
 942
 943                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 944                         $s[] .= $this->link(
 945                                         $this->mTitle,
 946                                         wfMsg( 'currentrev' ),
 947                                         array(),
 948                                         array(),
 949                                         array( 'known', 'noclasses' )
 950                         );
 951                 }
 952
 953                 if ( $wgUser->getNewtalk() ) {
 954                         # do not show "You have new messages" text when we are viewing our
 955                         # own talk page
 956                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
 957                                 $tl = $this->link(
 958                                         $wgUser->getTalkPage(),
 959                                         wfMsgHtml( 'newmessageslink' ),
 960                                         array(),
 961                                         array( 'redirect' => 'no' ),
 962                                         array( 'known', 'noclasses' )
 963                                 );
 964
 965                                 $dl = $this->link(
 966                                         $wgUser->getTalkPage(),
 967                                         wfMsgHtml( 'newmessagesdifflink' ),
 968                                         array(),
 969                                         array( 'diff' => 'cur' ),
 970                                         array( 'known', 'noclasses' )
 971                                 );
 972                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 973                                 # disable caching
 974                                 $wgOut->setSquidMaxage( 0 );
 975                                 $wgOut->enableClientCache( false );
 976                         }
 977                 }
 978
 979                 $undelete = $this->getUndeleteLink();
 980
 981                 if ( !empty( $undelete ) ) {
 982                         $s[] = $undelete;
 983                 }
 984
 985                 return $wgLang->pipeList( $s );
 986         }
 987
 988         function getUndeleteLink() {
 989                 global $wgUser, $wgLang, $wgRequest;
 990
 991                 $action = $wgRequest->getVal( 'action', 'view' );
 992
 993                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
 994                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
 995                         $n = $this->mTitle->isDeleted();
 996
 997                         if ( $n ) {
 998                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
 999                                         $msg = 'thisisdeleted';
1000                                 } else {
1001                                         $msg = 'viewdeleted';
1002                                 }
1003
1004                                 return wfMsg(
1005                                         $msg,
1006                                         $this->link(
1007                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1008                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1009                                                 array(),
1010                                                 array(),
1011                                                 array( 'known', 'noclasses' )
1012                                         )
1013                                 );
1014                         }
1015                 }
1016
1017                 return '';
1018         }
1019
1020         function printableLink() {
1021                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1022
1023                 $s = array();
1024
1025                 if ( !$wgOut->isPrintable() ) {
1026                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1027                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1028                 }
1029
1030                 if ( $wgOut->isSyndicated() ) {
1031                         foreach ( $wgFeedClasses as $format => $class ) {
1032                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1033                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1034                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1035                         }
1036                 }
1037                 return $wgLang->pipeList( $s );
1038         }
1039
1040         /**
1041          * Gets the h1 element with the page title.
1042          * @return string
1043          */
1044         function pageTitle() {
1045                 global $wgOut;
1046                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1047                 return $s;
1048         }
1049
1050         function pageSubtitle() {
1051                 global $wgOut;
1052
1053                 $sub = $wgOut->getSubtitle();
1054
1055                 if ( $sub == '' ) {
1056                         global $wgExtraSubtitle;
1057                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1058                 }
1059
1060                 $subpages = $this->subPageSubtitle();
1061                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1062                 $s = "<p class='subtitle'>{$sub}</p>\n";
1063
1064                 return $s;
1065         }
1066
1067         function subPageSubtitle() {
1068                 $subpages = '';
1069
1070                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this ) ) ) {
1071                         return $subpages;
1072                 }
1073
1074                 global $wgOut;
1075
1076                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1077                         $ptext = $this->mTitle->getPrefixedText();
1078                         if ( preg_match( '/\//', $ptext ) ) {
1079                                 $links = explode( '/', $ptext );
1080                                 array_pop( $links );
1081                                 $c = 0;
1082                                 $growinglink = '';
1083                                 $display = '';
1084
1085                                 foreach ( $links as $link ) {
1086                                         $growinglink .= $link;
1087                                         $display .= $link;
1088                                         $linkObj = Title::newFromText( $growinglink );
1089
1090                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1091                                                 $getlink = $this->link(
1092                                                         $linkObj,
1093                                                         htmlspecialchars( $display ),
1094                                                         array(),
1095                                                         array(),
1096                                                         array( 'known', 'noclasses' )
1097                                                 );
1098
1099                                                 $c++;
1100
1101                                                 if ( $c > 1 ) {
1102                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1103                                                 } else  {
1104                                                         $subpages .= '&lt; ';
1105                                                 }
1106
1107                                                 $subpages .= $getlink;
1108                                                 $display = '';
1109                                         } else {
1110                                                 $display .= '/';
1111                                         }
1112                                         $growinglink .= '/';
1113                                 }
1114                         }
1115                 }
1116
1117                 return $subpages;
1118         }
1119
1120         /**
1121          * Returns true if the IP should be shown in the header
1122          */
1123         function showIPinHeader() {
1124                 global $wgShowIPinHeader;
1125                 return $wgShowIPinHeader && session_id() != '';
1126         }
1127
1128         function nameAndLogin() {
1129                 global $wgUser, $wgLang, $wgContLang;
1130
1131                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1132
1133                 $ret = '';
1134
1135                 if ( $wgUser->isAnon() ) {
1136                         if ( $this->showIPinHeader() ) {
1137                                 $name = wfGetIP();
1138
1139                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1140                                         $wgLang->getNsText( NS_TALK ) );
1141
1142                                 $ret .= "$name ($talkLink)";
1143                         } else {
1144                                 $ret .= wfMsg( 'notloggedin' );
1145                         }
1146
1147                         $returnTo = $this->mTitle->getPrefixedDBkey();
1148                         $query = array();
1149
1150                         if ( $logoutPage != $returnTo ) {
1151                                 $query['returnto'] = $returnTo;
1152                         }
1153
1154                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1155                                 ? 'nav-login-createaccount'
1156                                 : 'login';
1157                         $ret .= "\n<br />" . $this->link(
1158                                 SpecialPage::getTitleFor( 'Userlogin' ),
1159                                 wfMsg( $loginlink ), array(), $query
1160                         );
1161                 } else {
1162                         $returnTo = $this->mTitle->getPrefixedDBkey();
1163                         $talkLink = $this->link( $wgUser->getTalkPage(),
1164                                 $wgLang->getNsText( NS_TALK ) );
1165
1166                         $ret .= $this->link( $wgUser->getUserPage(),
1167                                 htmlspecialchars( $wgUser->getName() ) );
1168                         $ret .= " ($talkLink)<br />";
1169                         $ret .= $wgLang->pipeList( array(
1170                                 $this->link(
1171                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1172                                         array(), array( 'returnto' => $returnTo )
1173                                 ),
1174                                 $this->specialLink( 'Preferences' ),
1175                         ) );
1176                 }
1177
1178                 $ret = $wgLang->pipeList( array(
1179                         $ret,
1180                         $this->link(
1181                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1182                                 wfMsg( 'help' )
1183                         ),
1184                 ) );
1185
1186                 return $ret;
1187         }
1188
1189         function getSearchLink() {
1190                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1191                 return $searchPage->getLocalURL();
1192         }
1193
1194         function escapeSearchLink() {
1195                 return htmlspecialchars( $this->getSearchLink() );
1196         }
1197
1198         function searchForm() {
1199                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1200
1201                 $search = $wgRequest->getText( 'search' );
1202
1203                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1204                   . $this->escapeSearchLink() . "\">\n"
1205                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1206                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1207                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1208
1209                 if ( $wgUseTwoButtonsSearchForm ) {
1210                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1211                 } else {
1212                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1213                 }
1214
1215                 $s .= '</form>';
1216
1217                 // Ensure unique id's for search boxes made after the first
1218                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1219
1220                 return $s;
1221         }
1222
1223         function topLinks() {
1224                 global $wgOut;
1225
1226                 $s = array(
1227                         $this->mainPageLink(),
1228                         $this->specialLink( 'Recentchanges' )
1229                 );
1230
1231                 if ( $wgOut->isArticleRelated() ) {
1232                         $s[] = $this->editThisPage();
1233                         $s[] = $this->historyLink();
1234                 }
1235
1236                 # Many people don't like this dropdown box
1237                 # $s[] = $this->specialPagesList();
1238
1239                 if ( $this->variantLinks() ) {
1240                         $s[] = $this->variantLinks();
1241                 }
1242
1243                 if ( $this->extensionTabLinks() ) {
1244                         $s[] = $this->extensionTabLinks();
1245                 }
1246
1247                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1248                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1249         }
1250
1251         /**
1252          * Compatibility for extensions adding functionality through tabs.
1253          * Eventually these old skins should be replaced with SkinTemplate-based
1254          * versions, sigh...
1255          * @return string
1256          */
1257         function extensionTabLinks() {
1258                 $tabs = array();
1259                 $out = '';
1260                 $s = array();
1261                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1262                 foreach ( $tabs as $tab ) {
1263                         $s[] = Xml::element( 'a',
1264                                 array( 'href' => $tab['href'] ),
1265                                 $tab['text'] );
1266                 }
1267
1268                 if ( count( $s ) ) {
1269                         global $wgLang;
1270
1271                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1272                         $out .= $wgLang->pipeList( $s );
1273                 }
1274
1275                 return $out;
1276         }
1277
1278         /**
1279          * Language/charset variant links for classic-style skins
1280          * @return string
1281          */
1282         function variantLinks() {
1283                 $s = '';
1284
1285                 /* show links to different language variants */
1286                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1287
1288                 $variants = $wgContLang->getVariants();
1289
1290                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1291                         foreach ( $variants as $code ) {
1292                                 $varname = $wgContLang->getVariantname( $code );
1293
1294                                 if ( $varname == 'disable' ) {
1295                                         continue;
1296                                 }
1297                                 $s = $wgLang->pipeList( array(
1298                                         $s,
1299                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1300                                 ) );
1301                         }
1302                 }
1303
1304                 return $s;
1305         }
1306
1307         function bottomLinks() {
1308                 global $wgOut, $wgUser, $wgUseTrackbacks;
1309                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1310
1311                 $s = '';
1312                 if ( $wgOut->isArticleRelated() ) {
1313                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1314
1315                         if ( $wgUser->isLoggedIn() ) {
1316                                 $element[] = $this->watchThisPage();
1317                         }
1318
1319                         $element[] = $this->talkLink();
1320                         $element[] = $this->historyLink();
1321                         $element[] = $this->whatLinksHere();
1322                         $element[] = $this->watchPageLinksLink();
1323
1324                         if ( $wgUseTrackbacks ) {
1325                                 $element[] = $this->trackbackLink();
1326                         }
1327
1328                         if (
1329                                 $this->mTitle->getNamespace() == NS_USER ||
1330                                 $this->mTitle->getNamespace() == NS_USER_TALK
1331                         ) {
1332                                 $id = User::idFromName( $this->mTitle->getText() );
1333                                 $ip = User::isIP( $this->mTitle->getText() );
1334
1335                                 # Both anons and non-anons have contributions list
1336                                 if ( $id || $ip ) {
1337                                         $element[] = $this->userContribsLink();
1338                                 }
1339
1340                                 if ( $this->showEmailUser( $id ) ) {
1341                                         $element[] = $this->emailUserLink();
1342                                 }
1343                         }
1344
1345                         $s = implode( $element, $sep );
1346
1347                         if ( $this->mTitle->getArticleId() ) {
1348                                 $s .= "\n<br />";
1349
1350                                 // Delete/protect/move links for privileged users
1351                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1352                                         $s .= $this->deleteThisPage();
1353                                 }
1354
1355                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1356                                         $s .= $sep . $this->protectThisPage();
1357                                 }
1358
1359                                 if ( $wgUser->isAllowed( 'move' ) ) {
1360                                         $s .= $sep . $this->moveThisPage();
1361                                 }
1362                         }
1363
1364                         $s .= "<br />\n" . $this->otherLanguages();
1365                 }
1366
1367                 return $s;
1368         }
1369
1370         function pageStats() {
1371                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1372                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1373
1374                 $oldid = $wgRequest->getVal( 'oldid' );
1375                 $diff = $wgRequest->getVal( 'diff' );
1376
1377                 if ( !$wgOut->isArticle() ) {
1378                         return '';
1379                 }
1380
1381                 if ( !$wgArticle instanceof Article ) {
1382                         return '';
1383                 }
1384
1385                 if ( isset( $oldid ) || isset( $diff ) ) {
1386                         return '';
1387                 }
1388
1389                 if ( 0 == $wgArticle->getID() ) {
1390                         return '';
1391                 }
1392
1393                 $s = '';
1394
1395                 if ( !$wgDisableCounters ) {
1396                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1397
1398                         if ( $count ) {
1399                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1400                         }
1401                 }
1402
1403                 if ( $wgMaxCredits != 0 ) {
1404                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1405                 } else {
1406                         $s .= $this->lastModified();
1407                 }
1408
1409                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1410                         $dbr = wfGetDB( DB_SLAVE );
1411                         $res = $dbr->select(
1412                                 'watchlist',
1413                                 array( 'COUNT(*) AS n' ),
1414                                 array(
1415                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1416                                         'wl_namespace' => $this->mTitle->getNamespace()
1417                                 ),
1418                                 __METHOD__
1419                         );
1420                         $x = $dbr->fetchObject( $res );
1421
1422                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1423                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1424                         );
1425                 }
1426
1427                 return $s . ' ' .  $this->getCopyright();
1428         }
1429
1430         function getCopyright( $type = 'detect' ) {
1431                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1432
1433                 if ( $type == 'detect' ) {
1434                         $diff = $wgRequest->getVal( 'diff' );
1435                         $isCur = $wgArticle && $wgArticle->isCurrent();
1436
1437                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1438                                 $type = 'history';
1439                         } else {
1440                                 $type = 'normal';
1441                         }
1442                 }
1443
1444                 if ( $type == 'history' ) {
1445                         $msg = 'history_copyright';
1446                 } else {
1447                         $msg = 'copyright';
1448                 }
1449
1450                 $out = '';
1451
1452                 if ( $wgRightsPage ) {
1453                         $title = Title::newFromText( $wgRightsPage );
1454                         $link = $this->linkKnown( $title, $wgRightsText );
1455                 } elseif ( $wgRightsUrl ) {
1456                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1457                 } elseif ( $wgRightsText ) {
1458                         $link = $wgRightsText;
1459                 } else {
1460                         # Give up now
1461                         return $out;
1462                 }
1463
1464                 // Allow for site and per-namespace customization of copyright notice.
1465                 $forContent = true;
1466
1467                 if ( isset( $wgArticle ) ) {
1468                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1469                 }
1470
1471                 if ( $forContent ) {
1472                         $out .= wfMsgForContent( $msg, $link );
1473                 } else {
1474                         $out .= wfMsg( $msg, $link );
1475                 }
1476
1477                 return $out;
1478         }
1479
1480         function getCopyrightIcon() {
1481                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1482
1483                 $out = '';
1484
1485                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1486                         $out = $wgCopyrightIcon;
1487                 } elseif ( $wgRightsIcon ) {
1488                         $icon = htmlspecialchars( $wgRightsIcon );
1489
1490                         if ( $wgRightsUrl ) {
1491                                 $url = htmlspecialchars( $wgRightsUrl );
1492                                 $out .= '<a href="' . $url . '">';
1493                         }
1494
1495                         $text = htmlspecialchars( $wgRightsText );
1496                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1497
1498                         if ( $wgRightsUrl ) {
1499                                 $out .= '</a>';
1500                         }
1501                 }
1502
1503                 return $out;
1504         }
1505
1506         /**
1507          * Gets the powered by MediaWiki icon.
1508          * @return string
1509          */
1510         function getPoweredBy() {
1511                 global $wgStylePath;
1512
1513                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1514                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1515
1516                 return $img;
1517         }
1518
1519         function lastModified() {
1520                 global $wgLang, $wgArticle;
1521
1522                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1523                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1524                 } else {
1525                         $timestamp = $wgArticle->getTimestamp();
1526                 }
1527
1528                 if ( $timestamp ) {
1529                         $d = $wgLang->date( $timestamp, true );
1530                         $t = $wgLang->time( $timestamp, true );
1531                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1532                 } else {
1533                         $s = '';
1534                 }
1535
1536                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1537                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1538                 }
1539
1540                 return $s;
1541         }
1542
1543         function logoText( $align = '' ) {
1544                 if ( $align != '' ) {
1545                         $a = " align='{$align}'";
1546                 } else {
1547                         $a = '';
1548                 }
1549
1550                 $mp = wfMsg( 'mainpage' );
1551                 $mptitle = Title::newMainPage();
1552                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1553
1554                 $logourl = $this->getLogo();
1555                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1556
1557                 return $s;
1558         }
1559
1560         /**
1561          * Show a drop-down box of special pages
1562          */
1563         function specialPagesList() {
1564                 global $wgContLang, $wgServer, $wgRedirectScript;
1565
1566                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1567
1568                 foreach ( $pages as $name => $page ) {
1569                         $pages[$name] = $page->getDescription();
1570                 }
1571
1572                 $go = wfMsg( 'go' );
1573                 $sp = wfMsg( 'specialpages' );
1574                 $spp = $wgContLang->specialPage( 'Specialpages' );
1575
1576                 $s = '<form id="specialpages" method="get" ' .
1577                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1578                 $s .= "<select name=\"wpDropdown\">\n";
1579                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1580
1581
1582                 foreach ( $pages as $name => $desc ) {
1583                         $p = $wgContLang->specialPage( $name );
1584                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1585                 }
1586
1587                 $s .= "</select>\n";
1588                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1589                 $s .= "</form>\n";
1590
1591                 return $s;
1592         }
1593
1594         /**
1595          * Gets the link to the wiki's main page.
1596          * @return string
1597          */
1598         function mainPageLink() {
1599                 $s = $this->link(
1600                         Title::newMainPage(),
1601                         wfMsg( 'mainpage' ),
1602                         array(),
1603                         array(),
1604                         array( 'known', 'noclasses' )
1605                 );
1606
1607                 return $s;
1608         }
1609
1610         private function footerLink( $desc, $page ) {
1611                 // if the link description has been set to "-" in the default language,
1612                 if ( wfMsgForContent( $desc )  == '-' ) {
1613                         // then it is disabled, for all languages.
1614                         return '';
1615                 } else {
1616                         // Otherwise, we display the link for the user, described in their
1617                         // language (which may or may not be the same as the default language),
1618                         // but we make the link target be the one site-wide page.
1619                         $title = Title::newFromText( wfMsgForContent( $page ) );
1620
1621                         return $this->linkKnown(
1622                                 $title,
1623                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1624                         );
1625                 }
1626         }
1627
1628         /**
1629          * Gets the link to the wiki's privacy policy page.
1630          */
1631         function privacyLink() {
1632                 return $this->footerLink( 'privacy', 'privacypage' );
1633         }
1634
1635         /**
1636          * Gets the link to the wiki's about page.
1637          */
1638         function aboutLink() {
1639                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1640         }
1641
1642         /**
1643          * Gets the link to the wiki's general disclaimers page.
1644          */
1645         function disclaimerLink() {
1646                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1647         }
1648
1649         function editThisPage() {
1650                 global $wgOut;
1651
1652                 if ( !$wgOut->isArticleRelated() ) {
1653                         $s = wfMsg( 'protectedpage' );
1654                 } else {
1655                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1656                                 $t = wfMsg( 'editthispage' );
1657                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1658                                 $t = wfMsg( 'create-this-page' );
1659                         } else {
1660                                 $t = wfMsg( 'viewsource' );
1661                         }
1662
1663                         $s = $this->link(
1664                                 $this->mTitle,
1665                                 $t,
1666                                 array(),
1667                                 $this->editUrlOptions(),
1668                                 array( 'known', 'noclasses' )
1669                         );
1670                 }
1671
1672                 return $s;
1673         }
1674
1675         /**
1676          * Return URL options for the 'edit page' link.
1677          * This may include an 'oldid' specifier, if the current page view is such.
1678          *
1679          * @return array
1680          * @private
1681          */
1682         function editUrlOptions() {
1683                 global $wgArticle;
1684
1685                 $options = array( 'action' => 'edit' );
1686
1687                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1688                         $options['oldid'] = intval( $this->mRevisionId );
1689                 }
1690
1691                 return $options;
1692         }
1693
1694         function deleteThisPage() {
1695                 global $wgUser, $wgRequest;
1696
1697                 $diff = $wgRequest->getVal( 'diff' );
1698
1699                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1700                         $t = wfMsg( 'deletethispage' );
1701
1702                         $s = $this->link(
1703                                 $this->mTitle,
1704                                 $t,
1705                                 array(),
1706                                 array( 'action' => 'delete' ),
1707                                 array( 'known', 'noclasses' )
1708                         );
1709                 } else {
1710                         $s = '';
1711                 }
1712
1713                 return $s;
1714         }
1715
1716         function protectThisPage() {
1717                 global $wgUser, $wgRequest;
1718
1719                 $diff = $wgRequest->getVal( 'diff' );
1720
1721                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1722                         if ( $this->mTitle->isProtected() ) {
1723                                 $text = wfMsg( 'unprotectthispage' );
1724                                 $query = array( 'action' => 'unprotect' );
1725                         } else {
1726                                 $text = wfMsg( 'protectthispage' );
1727                                 $query = array( 'action' => 'protect' );
1728                         }
1729
1730                         $s = $this->link(
1731                                 $this->mTitle,
1732                                 $text,
1733                                 array(),
1734                                 $query,
1735                                 array( 'known', 'noclasses' )
1736                         );
1737                 } else {
1738                         $s = '';
1739                 }
1740
1741                 return $s;
1742         }
1743
1744         function watchThisPage() {
1745                 global $wgOut;
1746                 ++$this->mWatchLinkNum;
1747
1748                 if ( $wgOut->isArticleRelated() ) {
1749                         if ( $this->mTitle->userIsWatching() ) {
1750                                 $text = wfMsg( 'unwatchthispage' );
1751                                 $query = array( 'action' => 'unwatch' );
1752                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1753                         } else {
1754                                 $text = wfMsg( 'watchthispage' );
1755                                 $query = array( 'action' => 'watch' );
1756                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1757                         }
1758
1759                         $s = $this->link(
1760                                 $this->mTitle,
1761                                 $text,
1762                                 array( 'id' => $id ),
1763                                 $query,
1764                                 array( 'known', 'noclasses' )
1765                         );
1766                 } else {
1767                         $s = wfMsg( 'notanarticle' );
1768                 }
1769
1770                 return $s;
1771         }
1772
1773         function moveThisPage() {
1774                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1775                         return $this->link(
1776                                 SpecialPage::getTitleFor( 'Movepage' ),
1777                                 wfMsg( 'movethispage' ),
1778                                 array(),
1779                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1780                                 array( 'known', 'noclasses' )
1781                         );
1782                 } else {
1783                         // no message if page is protected - would be redundant
1784                         return '';
1785                 }
1786         }
1787
1788         function historyLink() {
1789                 return $this->link(
1790                         $this->mTitle,
1791                         wfMsgHtml( 'history' ),
1792                         array( 'rel' => 'archives' ),
1793                         array( 'action' => 'history' )
1794                 );
1795         }
1796
1797         function whatLinksHere() {
1798                 return $this->link(
1799                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1800                         wfMsgHtml( 'whatlinkshere' ),
1801                         array(),
1802                         array(),
1803                         array( 'known', 'noclasses' )
1804                 );
1805         }
1806
1807         function userContribsLink() {
1808                 return $this->link(
1809                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1810                         wfMsgHtml( 'contributions' ),
1811                         array(),
1812                         array(),
1813                         array( 'known', 'noclasses' )
1814                 );
1815         }
1816
1817         function showEmailUser( $id ) {
1818                 global $wgUser;
1819                 $targetUser = User::newFromId( $id );
1820                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1821                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1822         }
1823
1824         function emailUserLink() {
1825                 return $this->link(
1826                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1827                         wfMsg( 'emailuser' ),
1828                         array(),
1829                         array(),
1830                         array( 'known', 'noclasses' )
1831                 );
1832         }
1833
1834         function watchPageLinksLink() {
1835                 global $wgOut;
1836
1837                 if ( !$wgOut->isArticleRelated() ) {
1838                         return '(' . wfMsg( 'notanarticle' ) . ')';
1839                 } else {
1840                         return $this->link(
1841                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1842                                 wfMsg( 'recentchangeslinked-toolbox' ),
1843                                 array(),
1844                                 array(),
1845                                 array( 'known', 'noclasses' )
1846                         );
1847                 }
1848         }
1849
1850         function trackbackLink() {
1851                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1852                         . wfMsg( 'trackbacklink' ) . '</a>';
1853         }
1854
1855         function otherLanguages() {
1856                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1857
1858                 if ( $wgHideInterlanguageLinks ) {
1859                         return '';
1860                 }
1861
1862                 $a = $wgOut->getLanguageLinks();
1863
1864                 if ( 0 == count( $a ) ) {
1865                         return '';
1866                 }
1867
1868                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1869                 $first = true;
1870
1871                 if ( $wgContLang->isRTL() ) {
1872                         $s .= '<span dir="LTR">';
1873                 }
1874
1875                 foreach ( $a as $l ) {
1876                         if ( !$first ) {
1877                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1878                         }
1879
1880                         $first = false;
1881
1882                         $nt = Title::newFromText( $l );
1883                         $url = $nt->escapeFullURL();
1884                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1885                         $title = htmlspecialchars( $nt->getText() );
1886
1887                         if ( $text == '' ) {
1888                                 $text = $l;
1889                         }
1890
1891                         $style = $this->getExternalLinkAttributes();
1892                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
1893                 }
1894
1895                 if ( $wgContLang->isRTL() ) {
1896                         $s .= '</span>';
1897                 }
1898
1899                 return $s;
1900         }
1901
1902         function talkLink() {
1903                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1904                         # No discussion links for special pages
1905                         return '';
1906                 }
1907
1908                 $linkOptions = array();
1909
1910                 if ( $this->mTitle->isTalkPage() ) {
1911                         $link = $this->mTitle->getSubjectPage();
1912                         switch( $link->getNamespace() ) {
1913                                 case NS_MAIN:
1914                                         $text = wfMsg( 'articlepage' );
1915                                         break;
1916                                 case NS_USER:
1917                                         $text = wfMsg( 'userpage' );
1918                                         break;
1919                                 case NS_PROJECT:
1920                                         $text = wfMsg( 'projectpage' );
1921                                         break;
1922                                 case NS_FILE:
1923                                         $text = wfMsg( 'imagepage' );
1924                                         # Make link known if image exists, even if the desc. page doesn't.
1925                                         if ( wfFindFile( $link ) )
1926                                                 $linkOptions[] = 'known';
1927                                         break;
1928                                 case NS_MEDIAWIKI:
1929                                         $text = wfMsg( 'mediawikipage' );
1930                                         break;
1931                                 case NS_TEMPLATE:
1932                                         $text = wfMsg( 'templatepage' );
1933                                         break;
1934                                 case NS_HELP:
1935                                         $text = wfMsg( 'viewhelppage' );
1936                                         break;
1937                                 case NS_CATEGORY:
1938                                         $text = wfMsg( 'categorypage' );
1939                                         break;
1940                                 default:
1941                                         $text = wfMsg( 'articlepage' );
1942                         }
1943                 } else {
1944                         $link = $this->mTitle->getTalkPage();
1945                         $text = wfMsg( 'talkpage' );
1946                 }
1947
1948                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1949
1950                 return $s;
1951         }
1952
1953         function commentLink() {
1954                 global $wgOut;
1955
1956                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1957                         return '';
1958                 }
1959
1960                 # __NEWSECTIONLINK___ changes behaviour here
1961                 # If it is present, the link points to this page, otherwise
1962                 # it points to the talk page
1963                 if ( $this->mTitle->isTalkPage() ) {
1964                         $title = $this->mTitle;
1965                 } elseif ( $wgOut->showNewSectionLink() ) {
1966                         $title = $this->mTitle;
1967                 } else {
1968                         $title = $this->mTitle->getTalkPage();
1969                 }
1970
1971                 return $this->link(
1972                         $title,
1973                         wfMsg( 'postcomment' ),
1974                         array(),
1975                         array(
1976                                 'action' => 'edit',
1977                                 'section' => 'new'
1978                         ),
1979                         array( 'known', 'noclasses' )
1980                 );
1981         }
1982
1983         function getUploadLink() {
1984                 global $wgUploadNavigationUrl;
1985
1986                 if ( $wgUploadNavigationUrl ) {
1987                         # Using an empty class attribute to avoid automatic setting of "external" class
1988                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
1989                 } else {
1990                         return $this->link(
1991                                 SpecialPage::getTitleFor( 'Upload' ),
1992                                 wfMsgHtml( 'upload' ),
1993                                 array(),
1994                                 array(),
1995                                 array( 'known', 'noclasses' )
1996                         );
1997                 }
1998         }
1999
2000         /* these are used extensively in SkinTemplate, but also some other places */
2001         static function makeMainPageUrl( $urlaction = '' ) {
2002                 $title = Title::newMainPage();
2003                 self::checkTitle( $title, '' );
2004
2005                 return $title->getLocalURL( $urlaction );
2006         }
2007
2008         static function makeSpecialUrl( $name, $urlaction = '' ) {
2009                 $title = SpecialPage::getTitleFor( $name );
2010                 return $title->getLocalURL( $urlaction );
2011         }
2012
2013         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2014                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2015                 return $title->getLocalURL( $urlaction );
2016         }
2017
2018         static function makeI18nUrl( $name, $urlaction = '' ) {
2019                 $title = Title::newFromText( wfMsgForContent( $name ) );
2020                 self::checkTitle( $title, $name );
2021                 return $title->getLocalURL( $urlaction );
2022         }
2023
2024         static function makeUrl( $name, $urlaction = '' ) {
2025                 $title = Title::newFromText( $name );
2026                 self::checkTitle( $title, $name );
2027
2028                 return $title->getLocalURL( $urlaction );
2029         }
2030
2031         /**
2032          * If url string starts with http, consider as external URL, else
2033          * internal
2034          */
2035         static function makeInternalOrExternalUrl( $name ) {
2036                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2037                         return $name;
2038                 } else {
2039                         return self::makeUrl( $name );
2040                 }
2041         }
2042
2043         # this can be passed the NS number as defined in Language.php
2044         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2045                 $title = Title::makeTitleSafe( $namespace, $name );
2046                 self::checkTitle( $title, $name );
2047
2048                 return $title->getLocalURL( $urlaction );
2049         }
2050
2051         /* these return an array with the 'href' and boolean 'exists' */
2052         static function makeUrlDetails( $name, $urlaction = '' ) {
2053                 $title = Title::newFromText( $name );
2054                 self::checkTitle( $title, $name );
2055
2056                 return array(
2057                         'href' => $title->getLocalURL( $urlaction ),
2058                         'exists' => $title->getArticleID() != 0,
2059                 );
2060         }
2061
2062         /**
2063          * Make URL details where the article exists (or at least it's convenient to think so)
2064          */
2065         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2066                 $title = Title::newFromText( $name );
2067                 self::checkTitle( $title, $name );
2068
2069                 return array(
2070                         'href' => $title->getLocalURL( $urlaction ),
2071                         'exists' => true
2072                 );
2073         }
2074
2075         # make sure we have some title to operate on
2076         static function checkTitle( &$title, $name ) {
2077                 if ( !is_object( $title ) ) {
2078                         $title = Title::newFromText( $name );
2079                         if ( !is_object( $title ) ) {
2080                                 $title = Title::newFromText( '--error: link target missing--' );
2081                         }
2082                 }
2083         }
2084
2085         /**
2086          * Build an array that represents the sidebar(s), the navigation bar among them
2087          *
2088          * @return array
2089          */
2090         function buildSidebar() {
2091                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2092                 global $wgLang;
2093                 wfProfileIn( __METHOD__ );
2094
2095                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2096
2097                 if ( $wgEnableSidebarCache ) {
2098                         $cachedsidebar = $parserMemc->get( $key );
2099                         if ( $cachedsidebar ) {
2100                                 wfProfileOut( __METHOD__ );
2101                                 return $cachedsidebar;
2102                         }
2103                 }
2104
2105                 $bar = array();
2106                 $this->addToSidebar( $bar, 'sidebar' );
2107
2108                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2109                 if ( $wgEnableSidebarCache ) {
2110                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2111                 }
2112
2113                 wfProfileOut( __METHOD__ );
2114                 return $bar;
2115         }
2116         /**
2117          * Add content from a sidebar system message
2118          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2119          *
2120          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2121          *
2122          * @param &$bar array
2123          * @param $message String
2124          */
2125         function addToSidebar( &$bar, $message ) {
2126                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2127         }
2128
2129         /**
2130          * Add content from plain text
2131          * @since 1.17
2132          * @param &$bar array
2133          * @param $text string
2134          */
2135         function addToSidebarPlain( &$bar, $text ) {
2136                 $lines = explode( "\n", $text );
2137                 $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.
2138
2139                 $heading = '';
2140
2141                 foreach ( $lines as $line ) {
2142                         if ( strpos( $line, '*' ) !== 0 ) {
2143                                 continue;
2144                         }
2145
2146                         if ( strpos( $line, '**' ) !== 0 ) {
2147                                 $heading = trim( $line, '* ' );
2148                                 if ( !array_key_exists( $heading, $bar ) ) {
2149                                         $bar[$heading] = array();
2150                                 }
2151                         } else {
2152                                 $line = trim( $line, '* ' );
2153
2154                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2155                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2156                                         $link = wfMsgForContent( $line[0] );
2157
2158                                         if ( $link == '-' ) {
2159                                                 continue;
2160                                         }
2161
2162                                         $text = wfMsgExt( $line[1], 'parsemag' );
2163
2164                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2165                                                 $text = $line[1];
2166                                         }
2167
2168                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2169                                                 $link = $line[0];
2170                                         }
2171
2172                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2173                                                 $href = $link;
2174                                         } else {
2175                                                 $title = Title::newFromText( $link );
2176
2177                                                 if ( $title ) {
2178                                                         $title = $title->fixSpecialName();
2179                                                         $href = $title->getLocalURL();
2180                                                 } else {
2181                                                         $href = 'INVALID-TITLE';
2182                                                 }
2183                                         }
2184
2185                                         $bar[$heading][] = array(
2186                                                 'text' => $text,
2187                                                 'href' => $href,
2188                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2189                                                 'active' => false
2190                                         );
2191                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2192                                         global $wgParser, $wgTitle;
2193
2194                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2195
2196                                         if ( is_null( $wgParser->mOptions ) ) {
2197                                                 $wgParser->mOptions = new ParserOptions();
2198                                         }
2199
2200                                         $wgParser->mOptions->setEditSection( false );
2201                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2202                                 } else {
2203                                         continue;
2204                                 }
2205                         }
2206                 }
2207
2208                 if ( count( $wikiBar ) > 0 ) {
2209                         $bar = array_merge( $bar, $wikiBar );
2210                 }
2211
2212                 return $bar;
2213         }
2214
2215         /**
2216          * Should we include common/wikiprintable.css?  Skins that have their own
2217          * print stylesheet should override this and return false.  (This is an
2218          * ugly hack to get Monobook to play nicely with
2219          * OutputPage::headElement().)
2220          *
2221          * @return bool
2222          */
2223         public function commonPrintStylesheet() {
2224                 return true;
2225         }
2226
2227         /**
2228          * Gets new talk page messages for the current user.
2229          * @return MediaWiki message or if no new talk page messages, nothing
2230          */
2231         function getNewtalks() {
2232                 global $wgUser, $wgOut;
2233
2234                 $newtalks = $wgUser->getNewMessageLinks();
2235                 $ntl = '';
2236
2237                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2238                         $userTitle = $this->mUser->getUserPage();
2239                         $userTalkTitle = $userTitle->getTalkPage();
2240
2241                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2242                                 $newMessagesLink = $this->link(
2243                                         $userTalkTitle,
2244                                         wfMsgHtml( 'newmessageslink' ),
2245                                         array(),
2246                                         array( 'redirect' => 'no' ),
2247                                         array( 'known', 'noclasses' )
2248                                 );
2249
2250                                 $newMessagesDiffLink = $this->link(
2251                                         $userTalkTitle,
2252                                         wfMsgHtml( 'newmessagesdifflink' ),
2253                                         array(),
2254                                         array( 'diff' => 'cur' ),
2255                                         array( 'known', 'noclasses' )
2256                                 );
2257
2258                                 $ntl = wfMsg(
2259                                         'youhavenewmessages',
2260                                         $newMessagesLink,
2261                                         $newMessagesDiffLink
2262                                 );
2263                                 # Disable Squid cache
2264                                 $wgOut->setSquidMaxage( 0 );
2265                         }
2266                 } elseif ( count( $newtalks ) ) {
2267                         // _>" " for BC <= 1.16
2268                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2269                         $msgs = array();
2270
2271                         foreach ( $newtalks as $newtalk ) {
2272                                 $msgs[] = Xml::element(
2273                                         'a',
2274                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2275                                 );
2276                         }
2277                         $parts = implode( $sep, $msgs );
2278                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2279                         $wgOut->setSquidMaxage( 0 );
2280                 }
2281
2282                 return $ntl;
2283         }
2284 }