includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  23         // How many search boxes have we made?  Avoid duplicate id's.
  24         protected $searchboxes = '';
  25         /**#@-*/
  26         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  27         protected $skinname = 'standard';
  28         // @todo Fixme: should be protected :-\
  29         var $mTitle = null;
  30
  31         /** Constructor, call parent constructor */
  32         function __construct() {
  33                 parent::__construct();
  34         }
  35
  36         /**
  37          * Fetch the set of available skins.
  38          * @return array of strings
  39          */
  40         static function getSkinNames() {
  41                 global $wgValidSkinNames;
  42                 static $skinsInitialised = false;
  43
  44                 if ( !$skinsInitialised ) {
  45                         # Get a list of available skins
  46                         # Build using the regular expression '^(.*).php$'
  47                         # Array keys are all lower case, array value keep the case used by filename
  48                         #
  49                         wfProfileIn( __METHOD__ . '-init' );
  50
  51                         global $wgStyleDirectory;
  52
  53                         $skinDir = dir( $wgStyleDirectory );
  54
  55                         # while code from www.php.net
  56                         while ( false !== ( $file = $skinDir->read() ) ) {
  57                                 // Skip non-PHP files, hidden files, and '.dep' includes
  58                                 $matches = array();
  59
  60                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  61                                         $aSkin = $matches[1];
  62                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  63                                 }
  64                         }
  65                         $skinDir->close();
  66                         $skinsInitialised = true;
  67                         wfProfileOut( __METHOD__ . '-init' );
  68                 }
  69                 return $wgValidSkinNames;
  70         }
  71
  72         /**
  73          * Fetch the list of usable skins in regards to $wgSkipSkins.
  74          * Useful for Special:Preferences and other places where you
  75          * only want to show skins users _can_ use.
  76          * @return array of strings
  77          */
  78         public static function getUsableSkins() {
  79                 global $wgSkipSkins;
  80
  81                 $usableSkins = self::getSkinNames();
  82
  83                 foreach ( $wgSkipSkins as $skip ) {
  84                         unset( $usableSkins[$skip] );
  85                 }
  86
  87                 return $usableSkins;
  88         }
  89
  90         /**
  91          * Normalize a skin preference value to a form that can be loaded.
  92          * If a skin can't be found, it will fall back to the configured
  93          * default (or the old 'Classic' skin if that's broken).
  94          * @param $key String: 'monobook', 'standard', etc.
  95          * @return string
  96          */
  97         static function normalizeKey( $key ) {
  98                 global $wgDefaultSkin;
  99
 100                 $skinNames = Skin::getSkinNames();
 101
 102                 if ( $key == '' ) {
 103                         // Don't return the default immediately;
 104                         // in a misconfiguration we need to fall back.
 105                         $key = $wgDefaultSkin;
 106                 }
 107
 108                 if ( isset( $skinNames[$key] ) ) {
 109                         return $key;
 110                 }
 111
 112                 // Older versions of the software used a numeric setting
 113                 // in the user preferences.
 114                 $fallback = array(
 115                         0 => $wgDefaultSkin,
 116                         1 => 'nostalgia',
 117                         2 => 'cologneblue'
 118                 );
 119
 120                 if ( isset( $fallback[$key] ) ) {
 121                         $key = $fallback[$key];
 122                 }
 123
 124                 if ( isset( $skinNames[$key] ) ) {
 125                         return $key;
 126                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 127                         return $wgDefaultSkin;
 128                 } else {
 129                         return 'vector';
 130                 }
 131         }
 132
 133         /**
 134          * Factory method for loading a skin of a given type
 135          * @param $key String: 'monobook', 'standard', etc.
 136          * @return Skin
 137          */
 138         static function &newFromKey( $key ) {
 139                 global $wgStyleDirectory;
 140
 141                 $key = Skin::normalizeKey( $key );
 142
 143                 $skinNames = Skin::getSkinNames();
 144                 $skinName = $skinNames[$key];
 145                 $className = 'Skin' . ucfirst( $key );
 146
 147                 # Grab the skin class and initialise it.
 148                 if ( !class_exists( $className ) ) {
 149                         // Preload base classes to work around APC/PHP5 bug
 150                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 151
 152                         if ( file_exists( $deps ) ) {
 153                                 include_once( $deps );
 154                         }
 155                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 156
 157                         # Check if we got if not failback to default skin
 158                         if ( !class_exists( $className ) ) {
 159                                 # DO NOT die if the class isn't found. This breaks maintenance
 160                                 # scripts and can cause a user account to be unrecoverable
 161                                 # except by SQL manipulation if a previously valid skin name
 162                                 # is no longer valid.
 163                                 wfDebug( "Skin class does not exist: $className\n" );
 164                                 $className = 'SkinVector';
 165                                 require_once( "{$wgStyleDirectory}/Vector.php" );
 166                         }
 167                 }
 168                 $skin = new $className;
 169                 return $skin;
 170         }
 171
 172         /** @return string path to the skin stylesheet */
 173         function getStylesheet() {
 174                 return 'common/wikistandard.css';
 175         }
 176
 177         /** @return string skin name */
 178         public function getSkinName() {
 179                 return $this->skinname;
 180         }
 181
 182         function qbSetting() {
 183                 global $wgOut, $wgUser;
 184
 185                 if ( $wgOut->isQuickbarSuppressed() ) {
 186                         return 0;
 187                 }
 188
 189                 $q = $wgUser->getOption( 'quickbar', 0 );
 190
 191                 return $q;
 192         }
 193
 194         function initPage( OutputPage $out ) {
 195                 global $wgFavicon, $wgAppleTouchIcon;
 196
 197                 wfProfileIn( __METHOD__ );
 198
 199                 # Generally the order of the favicon and apple-touch-icon links
 200                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 201                 # uses whichever one appears later in the HTML source. Make sure
 202                 # apple-touch-icon is specified first to avoid this.
 203                 if ( false !== $wgAppleTouchIcon ) {
 204                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 205                 }
 206
 207                 if ( false !== $wgFavicon ) {
 208                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 209                 }
 210
 211                 # OpenSearch description link
 212                 $out->addLink( array(
 213                         'rel' => 'search',
 214                         'type' => 'application/opensearchdescription+xml',
 215                         'href' => wfScript( 'opensearch_desc' ),
 216                         'title' => wfMsgForContent( 'opensearch-desc' ),
 217                 ) );
 218
 219                 $this->addMetadataLinks( $out );
 220
 221                 $this->mRevisionId = $out->mRevisionId;
 222
 223                 $this->preloadExistence();
 224
 225                 wfProfileOut( __METHOD__ );
 226         }
 227
 228         /**
 229          * Preload the existence of three commonly-requested pages in a single query
 230          */
 231         function preloadExistence() {
 232                 global $wgUser;
 233
 234                 // User/talk link
 235                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 236
 237                 // Other tab link
 238                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 239                         // nothing
 240                 } elseif ( $this->mTitle->isTalkPage() ) {
 241                         $titles[] = $this->mTitle->getSubjectPage();
 242                 } else {
 243                         $titles[] = $this->mTitle->getTalkPage();
 244                 }
 245
 246                 $lb = new LinkBatch( $titles );
 247                 $lb->execute();
 248         }
 249
 250         /**
 251          * Adds metadata links (Creative Commons/Dublin Core/copyright) to the HTML
 252          * output.
 253          * @param $out Object: instance of OutputPage
 254          */
 255         function addMetadataLinks( OutputPage $out ) {
 256                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 257                 global $wgRightsPage, $wgRightsUrl;
 258
 259                 if ( $out->isArticleRelated() ) {
 260                         # note: buggy CC software only reads first "meta" link
 261                         if ( $wgEnableCreativeCommonsRdf ) {
 262                                 $out->addMetadataLink( array(
 263                                         'title' => 'Creative Commons',
 264                                         'type' => 'application/rdf+xml',
 265                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 266                                 );
 267                         }
 268
 269                         if ( $wgEnableDublinCoreRdf ) {
 270                                 $out->addMetadataLink( array(
 271                                         'title' => 'Dublin Core',
 272                                         'type' => 'application/rdf+xml',
 273                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 274                                 );
 275                         }
 276                 }
 277                 $copyright = '';
 278                 if ( $wgRightsPage ) {
 279                         $copy = Title::newFromText( $wgRightsPage );
 280
 281                         if ( $copy ) {
 282                                 $copyright = $copy->getLocalURL();
 283                         }
 284                 }
 285
 286                 if ( !$copyright && $wgRightsUrl ) {
 287                         $copyright = $wgRightsUrl;
 288                 }
 289
 290                 if ( $copyright ) {
 291                         $out->addLink( array(
 292                                 'rel' => 'copyright',
 293                                 'href' => $copyright )
 294                         );
 295                 }
 296         }
 297
 298         /**
 299          * Set some local variables
 300          */
 301         protected function setMembers() {
 302                 global $wgUser;
 303                 $this->mUser = $wgUser;
 304                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 305                 $this->usercss = false;
 306         }
 307
 308         /**
 309          * Set the title
 310          * @param $t Title object to use
 311          */
 312         public function setTitle( $t ) {
 313                 $this->mTitle = $t;
 314         }
 315
 316         /** Get the title */
 317         public function getTitle() {
 318                 return $this->mTitle;
 319         }
 320
 321         /**
 322          * Outputs the HTML generated by other functions.
 323          * @param $out Object: instance of OutputPage
 324          */
 325         function outputPage( OutputPage $out ) {
 326                 global $wgDebugComments;
 327                 wfProfileIn( __METHOD__ );
 328
 329                 $this->setMembers();
 330                 $this->initPage( $out );
 331
 332                 // See self::afterContentHook() for documentation
 333                 $afterContent = $this->afterContentHook();
 334
 335                 $out->out( $out->headElement( $this ) );
 336
 337                 if ( $wgDebugComments ) {
 338                         $out->out( "<!-- Wiki debugging output:\n" .
 339                           $out->mDebugtext . "-->\n" );
 340                 }
 341
 342                 $out->out( $this->beforeContent() );
 343
 344                 $out->out( $out->mBodytext . "\n" );
 345
 346                 $out->out( $this->afterContent() );
 347
 348                 $out->out( $afterContent );
 349
 350                 $out->out( $this->bottomScripts( $out ) );
 351
 352                 $out->out( wfReportTime() );
 353
 354                 $out->out( "\n</body></html>" );
 355                 wfProfileOut( __METHOD__ );
 356         }
 357
 358         static function makeVariablesScript( $data ) {
 359                 if ( $data ) {
 360                         return Html::inlineScript( 'mediaWiki.config.set(' . json_encode( $data ) . ');' );
 361                 } else {
 362                         return '';
 363                 }
 364         }
 365
 366         /**
 367          * Make a <script> tag containing global variables
 368          * @param $skinName string Name of the skin
 369          * The odd calling convention is for backwards compatibility
 370          * @todo FIXME: Make this not depend on $wgTitle!
 371          */
 372         static function makeGlobalVariablesScript( $skinName ) {
 373                 if ( is_array( $skinName ) ) {
 374                         # Weird back-compat stuff.
 375                         $skinName = $skinName['skinname'];
 376                 }
 377
 378                 global $wgScript, $wgTitle, $wgStylePath, $wgUser, $wgScriptExtension;
 379                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 380                 global $wgOut, $wgArticle;
 381                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 382                 global $wgUseAjax, $wgAjaxWatch;
 383                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 384                 global $wgRestrictionTypes;
 385                 global $wgDBname, $wgEnableMWSuggest;
 386                 global $wgSitename;
 387
 388                 $ns = $wgTitle->getNamespace();
 389                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 390                 $separatorTransTable = $wgContLang->separatorTransformTable();
 391                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
 392                 $compactSeparatorTransTable = array(
 393                         implode( "\t", array_keys( $separatorTransTable ) ),
 394                         implode( "\t", $separatorTransTable ),
 395                 );
 396                 $digitTransTable = $wgContLang->digitTransformTable();
 397                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
 398                 $compactDigitTransTable = array(
 399                         implode( "\t", array_keys( $digitTransTable ) ),
 400                         implode( "\t", $digitTransTable ),
 401                 );
 402
 403                 $mainPage = Title::newMainPage();
 404                 $vars = array(
 405                         'skin' => $skinName,
 406                         'stylepath' => $wgStylePath,
 407                         'wgUrlProtocols' => wfUrlProtocols(),
 408                         'wgArticlePath' => $wgArticlePath,
 409                         'wgScriptPath' => $wgScriptPath,
 410                         'wgScriptExtension' => $wgScriptExtension,
 411                         'wgScript' => $wgScript,
 412                         'wgVariantArticlePath' => $wgVariantArticlePath,
 413                         'wgActionPaths' => (object)$wgActionPaths,
 414                         'wgServer' => $wgServer,
 415                         'wgCanonicalNamespace' => $nsname,
 416                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 417                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 418                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 419                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 420                         'wgTitle' => $wgTitle->getText(),
 421                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 422                         'wgArticleId' => $wgTitle->getArticleId(),
 423                         'wgIsArticle' => $wgOut->isArticle(),
 424                         'wgUserName' => $wgUser->isAnon() ? null : $wgUser->getName(),
 425                         'wgUserGroups' => $wgUser->getEffectiveGroups(),
 426                         'wgUserLanguage' => $wgLang->getCode(),
 427                         'wgContentLanguage' => $wgContLang->getCode(),
 428                         'wgBreakFrames' => $wgBreakFrames,
 429                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 430                         'wgVersion' => $wgVersion,
 431                         'wgEnableAPI' => $wgEnableAPI,
 432                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 433                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
 434                         'wgDigitTransformTable' => $compactDigitTransTable,
 435                         'wgMainPageTitle' => $mainPage ? $mainPage->getPrefixedText() : null,
 436                         'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
 437                         'wgNamespaceIds' => $wgContLang->getNamespaceIds(),
 438                         'wgSiteName' => $wgSitename,
 439                         'wgCategories' => $wgOut->getCategories(),
 440                 );
 441
 442                 if ( $wgContLang->hasVariants() ) {
 443                         $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
 444                 }
 445
 446                 // if on upload page output the extension list & js_upload
 447                 if ( SpecialPage::resolveAlias( $wgTitle->getDBkey() ) == 'Upload' ) {
 448                         global $wgFileExtensions;
 449                         $vars['wgFileExtensions'] = $wgFileExtensions;
 450                 }
 451
 452                 if ( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
 453                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 454                         $vars['wgDBname'] = $wgDBname;
 455                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 456                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 457                 }
 458
 459                 foreach ( $wgRestrictionTypes as $type ) {
 460                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 461                 }
 462
 463                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 464                         $msgs = (object)array();
 465
 466                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching',
 467                                 'tooltip-ca-watch', 'tooltip-ca-unwatch' ) as $msgName ) {
 468                                 $msgs-> { $msgName . 'Msg' } = wfMsg( $msgName );
 469                         }
 470                         $vars['wgAjaxWatch'] = $msgs;
 471                 }
 472
 473                 // Allow extensions to add their custom variables to the global JS variables
 474                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 475
 476                 return self::makeVariablesScript( $vars );
 477         }
 478
 479         /**
 480          * To make it harder for someone to slip a user a fake
 481          * user-JavaScript or user-CSS preview, a random token
 482          * is associated with the login session. If it's not
 483          * passed back with the preview request, we won't render
 484          * the code.
 485          *
 486          * @param $action String: 'edit', 'submit' etc.
 487          * @return bool
 488          */
 489         public function userCanPreview( $action ) {
 490                 global $wgRequest, $wgUser;
 491
 492                 if ( $action != 'submit' ) {
 493                         return false;
 494                 }
 495                 if ( !$wgRequest->wasPosted() ) {
 496                         return false;
 497                 }
 498                 if ( !$this->mTitle->userCanEditCssSubpage() ) {
 499                         return false;
 500                 }
 501                 if ( !$this->mTitle->userCanEditJsSubpage() ) {
 502                         return false;
 503                 }
 504
 505                 return $wgUser->matchEditToken(
 506                         $wgRequest->getVal( 'wpEditToken' ) );
 507         }
 508
 509         /**
 510          * Generated JavaScript action=raw&gen=js
 511          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 512          * nated together.  For some bizarre reason, it does *not* return any
 513          * custom user JS from subpages.  Huh?
 514          *
 515          * There's absolutely no reason to have separate Monobook/Common JSes.
 516          * Any JS that cares can just check the skin variable generated at the
 517          * top.  For now Monobook.js will be maintained, but it should be consi-
 518          * dered deprecated.
 519          *
 520          * @param $skinName String: If set, overrides the skin name
 521          * @return string
 522          */
 523         public function generateUserJs( $skinName = null ) {
 524                 global $wgStylePath;
 525
 526                 wfProfileIn( __METHOD__ );
 527
 528                 if ( !$skinName ) {
 529                         $skinName = $this->getSkinName();
 530                 }
 531
 532                 $s = "/* generated javascript */\n";
 533                 $s .= "var skin = '" . Xml::escapeJsString( $skinName ) . "';\n";
 534                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 535                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 536
 537                 $commonJs = wfMsgExt( 'common.js', 'content' );
 538
 539                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 540                         $s .= $commonJs;
 541                 }
 542
 543                 $s .= "\n\n/* MediaWiki:" . ucfirst( $skinName ) . ".js */\n";
 544
 545                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 546                 // by checking for default message content
 547                 $msgKey = ucfirst( $skinName ) . '.js';
 548                 $userJS = wfMsgExt( $msgKey, 'content' );
 549
 550                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 551                         $s .= $userJS;
 552                 }
 553
 554                 wfProfileOut( __METHOD__ );
 555                 return $s;
 556         }
 557
 558         /**
 559          * Generate user stylesheet for action=raw&gen=css
 560          */
 561         public function generateUserStylesheet() {
 562                 wfProfileIn( __METHOD__ );
 563
 564                 $s = "/* generated user stylesheet */\n" .
 565                         $this->reallyGenerateUserStylesheet();
 566
 567                 wfProfileOut( __METHOD__ );
 568                 return $s;
 569         }
 570
 571         /**
 572          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 573          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 574          */
 575         protected function reallyGenerateUserStylesheet() {
 576                 global $wgUser;
 577
 578                 $s = '';
 579
 580                 if ( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 581                         $underline = $undopt ? 'underline' : 'none';
 582                         $s .= "a { text-decoration: $underline; }\n";
 583                 }
 584
 585                 if ( $wgUser->getOption( 'highlightbroken' ) ) {
 586                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 587                 } else {
 588                         $s .= <<<CSS
 589 a.new, #quickbar a.new,
 590 a.stub, #quickbar a.stub {
 591         color: inherit;
 592 }
 593 a.new:after, #quickbar a.new:after {
 594         content: "?";
 595         color: #CC2200;
 596 }
 597 a.stub:after, #quickbar a.stub:after {
 598         content: "!";
 599         color: #772233;
 600 }
 601 CSS;
 602                 }
 603
 604                 if ( $wgUser->getOption( 'justify' ) ) {
 605                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 606                 }
 607
 608                 if ( !$wgUser->getOption( 'showtoc' ) ) {
 609                         $s .= "#toc { display: none; }\n";
 610                 }
 611
 612                 if ( !$wgUser->getOption( 'editsection' ) ) {
 613                         $s .= ".editsection { display: none; }\n";
 614                 }
 615
 616                 $fontstyle = $wgUser->getOption( 'editfont' );
 617
 618                 if ( $fontstyle !== 'default' ) {
 619                         $s .= "textarea { font-family: $fontstyle; }\n";
 620                 }
 621
 622                 return $s;
 623         }
 624
 625         /**
 626          * @private
 627          */
 628         function setupUserCss( OutputPage $out ) {
 629                 global $wgRequest, $wgUser;
 630                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage;
 631
 632                 wfProfileIn( __METHOD__ );
 633
 634                 $this->setupSkinUserCss( $out );
 635
 636                 $siteargs = array(
 637                         'action' => 'raw',
 638                         'maxage' => $wgSquidMaxage,
 639                 );
 640
 641                 // Add any extension CSS
 642                 foreach ( $out->getExtStyle() as $url ) {
 643                         $out->addStyle( $url );
 644                 }
 645
 646                 // If we use the site's dynamic CSS, throw that in, too
 647                 // Per-site custom styles
 648                 if ( $wgUseSiteCss ) {
 649                         global $wgHandheldStyle;
 650
 651                         $query = wfArrayToCGI( self::getDynamicStylesheetQuery() );
 652                         # Site settings must override extension css! (bug 15025)
 653                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 654                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 655
 656                         if ( $wgHandheldStyle ) {
 657                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 658                         }
 659                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 660                 }
 661
 662                 global $wgAllowUserCssPrefs;
 663
 664                 if ( $wgAllowUserCssPrefs ) {
 665                         if ( $wgUser->isLoggedIn() ) {
 666                                 // Ensure that logged-in users' generated CSS isn't clobbered
 667                                 // by anons' publicly cacheable generated CSS.
 668                                 $siteargs['smaxage'] = '0';
 669                                 $siteargs['ts'] = $wgUser->mTouched;
 670                         }
 671
 672                         // Per-user styles based on preferences
 673                         $siteargs['gen'] = 'css';
 674
 675                         if ( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 676                                 $siteargs['useskin'] = $us;
 677                         }
 678
 679                         $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 680                 }
 681
 682                 // Per-user custom style pages
 683                 if ( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 684                         $action = $wgRequest->getVal( 'action' );
 685
 686                         # If we're previewing the CSS page, use it
 687                         if ( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 688                                 // @FIXME: properly escape the cdata!
 689                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 690                         } else {
 691                                 $names = array( 'common', $this->getSkinName() );
 692                                 foreach ( $names as $name ) {
 693                                         $out->addStyle( self::makeUrl(
 694                                                 $this->userpage . '/' . $name . '.css',
 695                                                 'action=raw&ctype=text/css' )
 696                                         );
 697                                 }
 698                         }
 699                 }
 700
 701                 wfProfileOut( __METHOD__ );
 702         }
 703
 704         /**
 705          * Get the query to generate a dynamic stylesheet
 706          *
 707          * @return array
 708          */
 709         public static function getDynamicStylesheetQuery() {
 710                 global $wgSquidMaxage;
 711
 712                 return array(
 713                                 'action' => 'raw',
 714                                 'maxage' => $wgSquidMaxage,
 715                                 'usemsgcache' => 'yes',
 716                                 'ctype' => 'text/css',
 717                                 'smaxage' => $wgSquidMaxage,
 718                         );
 719         }
 720
 721         /**
 722          * Add skin specific stylesheets
 723          * @param $out OutputPage
 724          */
 725         function setupSkinUserCss( OutputPage $out ) {
 726                 $out->addModuleStyles( 'mediawiki.legacy.shared' );
 727                 $out->addModuleStyles( 'mediawiki.legacy.oldshared' );
 728                 // TODO: Figure out how to best integrate this stuff into ResourceLoader
 729                 $out->addStyle( $this->getStylesheet() );
 730                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 731         }
 732
 733         function getPageClasses( $title ) {
 734                 $numeric = 'ns-' . $title->getNamespace();
 735
 736                 if ( $title->getNamespace() == NS_SPECIAL ) {
 737                         $type = 'ns-special';
 738                 } elseif ( $title->isTalkPage() ) {
 739                         $type = 'ns-talk';
 740                 } else {
 741                         $type = 'ns-subject';
 742                 }
 743
 744                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 745
 746                 return "$numeric $type $name";
 747         }
 748
 749         /**
 750          * URL to the logo
 751          */
 752         function getLogo() {
 753                 global $wgLogo;
 754                 return $wgLogo;
 755         }
 756
 757         /**
 758          * This will be called immediately after the <body> tag.  Split into
 759          * two functions to make it easier to subclass.
 760          */
 761         function beforeContent() {
 762                 return $this->doBeforeContent();
 763         }
 764
 765         function doBeforeContent() {
 766                 global $wgContLang;
 767                 wfProfileIn( __METHOD__ );
 768
 769                 $s = '';
 770                 $qb = $this->qbSetting();
 771
 772                 $langlinks = $this->otherLanguages();
 773                 if ( $langlinks ) {
 774                         $rows = 2;
 775                         $borderhack = '';
 776                 } else {
 777                         $rows = 1;
 778                         $langlinks = false;
 779                         $borderhack = 'class="top"';
 780                 }
 781
 782                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 783                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 784
 785                 $shove = ( $qb != 0 );
 786                 $left = ( $qb == 1 || $qb == 3 );
 787
 788                 if ( $wgContLang->isRTL() ) {
 789                         $left = !$left;
 790                 }
 791
 792                 if ( !$shove ) {
 793                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 794                                 $this->logoText() . '</td>';
 795                 } elseif ( $left ) {
 796                         $s .= $this->getQuickbarCompensator( $rows );
 797                 }
 798
 799                 $l = $wgContLang->alignStart();
 800                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 801
 802                 $s .= $this->topLinks();
 803                 $s .= '<p class="subtitle">' . $this->pageTitleLinks() . "</p>\n";
 804
 805                 $r = $wgContLang->alignEnd();
 806                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 807                 $s .= $this->nameAndLogin();
 808                 $s .= "\n<br />" . $this->searchForm() . '</td>';
 809
 810                 if ( $langlinks ) {
 811                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 812                 }
 813
 814                 if ( $shove && !$left ) { # Right
 815                         $s .= $this->getQuickbarCompensator( $rows );
 816                 }
 817
 818                 $s .= "</tr>\n</table>\n</div>\n";
 819                 $s .= "\n<div id='article'>\n";
 820
 821                 $notice = wfGetSiteNotice();
 822
 823                 if ( $notice ) {
 824                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 825                 }
 826                 $s .= $this->pageTitle();
 827                 $s .= $this->pageSubtitle();
 828                 $s .= $this->getCategories();
 829
 830                 wfProfileOut( __METHOD__ );
 831                 return $s;
 832         }
 833
 834         function getCategoryLinks() {
 835                 global $wgOut, $wgUseCategoryBrowser;
 836                 global $wgContLang, $wgUser;
 837
 838                 if ( count( $wgOut->mCategoryLinks ) == 0 ) {
 839                         return '';
 840                 }
 841
 842                 # Separator
 843                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 844
 845                 // Use Unicode bidi embedding override characters,
 846                 // to make sure links don't smash each other up in ugly ways.
 847                 $dir = $wgContLang->getDir();
 848                 $embed = "<span dir='$dir'>";
 849                 $pop = '</span>';
 850
 851                 $allCats = $wgOut->getCategoryLinks();
 852                 $s = '';
 853                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 854
 855                 if ( !empty( $allCats['normal'] ) ) {
 856                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 857
 858                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 859                         $s .= '<div id="mw-normal-catlinks">' .
 860                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 861                                 . $colon . $t . '</div>';
 862                 }
 863
 864                 # Hidden categories
 865                 if ( isset( $allCats['hidden'] ) ) {
 866                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 867                                 $class = 'mw-hidden-cats-user-shown';
 868                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 869                                 $class = 'mw-hidden-cats-ns-shown';
 870                         } else {
 871                                 $class = 'mw-hidden-cats-hidden';
 872                         }
 873
 874                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 875                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 876                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 877                                 '</div>';
 878                 }
 879
 880                 # optional 'dmoz-like' category browser. Will be shown under the list
 881                 # of categories an article belong to
 882                 if ( $wgUseCategoryBrowser ) {
 883                         $s .= '<br /><hr />';
 884
 885                         # get a big array of the parents tree
 886                         $parenttree = $this->mTitle->getParentCategoryTree();
 887                         # Skin object passed by reference cause it can not be
 888                         # accessed under the method subfunction drawCategoryBrowser
 889                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 890                         # Clean out bogus first entry and sort them
 891                         unset( $tempout[0] );
 892                         asort( $tempout );
 893                         # Output one per line
 894                         $s .= implode( "<br />\n", $tempout );
 895                 }
 896
 897                 return $s;
 898         }
 899
 900         /**
 901          * Render the array as a serie of links.
 902          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 903          * @param &skin Object: skin passed by reference
 904          * @return String separated by &gt;, terminate with "\n"
 905          */
 906         function drawCategoryBrowser( $tree, &$skin ) {
 907                 $return = '';
 908
 909                 foreach ( $tree as $element => $parent ) {
 910                         if ( empty( $parent ) ) {
 911                                 # element start a new list
 912                                 $return .= "\n";
 913                         } else {
 914                                 # grab the others elements
 915                                 $return .= $this->drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 916                         }
 917
 918                         # add our current element to the list
 919                         $eltitle = Title::newFromText( $element );
 920                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 921                 }
 922
 923                 return $return;
 924         }
 925
 926         function getCategories() {
 927                 $catlinks = $this->getCategoryLinks();
 928
 929                 $classes = 'catlinks';
 930
 931                 global $wgOut, $wgUser;
 932
 933                 // Check what we're showing
 934                 $allCats = $wgOut->getCategoryLinks();
 935                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 936                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 937
 938                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 939                         $classes .= ' catlinks-allhidden';
 940                 }
 941
 942                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 943         }
 944
 945         function getQuickbarCompensator( $rows = 1 ) {
 946                 return "<td width='152' rowspan='{$rows}'>&#160;</td>";
 947         }
 948
 949         /**
 950          * This runs a hook to allow extensions placing their stuff after content
 951          * and article metadata (e.g. categories).
 952          * Note: This function has nothing to do with afterContent().
 953          *
 954          * This hook is placed here in order to allow using the same hook for all
 955          * skins, both the SkinTemplate based ones and the older ones, which directly
 956          * use this class to get their data.
 957          *
 958          * The output of this function gets processed in SkinTemplate::outputPage() for
 959          * the SkinTemplate based skins, all other skins should directly echo it.
 960          *
 961          * Returns an empty string by default, if not changed by any hook function.
 962          */
 963         protected function afterContentHook() {
 964                 $data = '';
 965
 966                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 967                         // adding just some spaces shouldn't toggle the output
 968                         // of the whole <div/>, so we use trim() here
 969                         if ( trim( $data ) != '' ) {
 970                                 // Doing this here instead of in the skins to
 971                                 // ensure that the div has the same ID in all
 972                                 // skins
 973                                 $data = "<div id='mw-data-after-content'>\n" .
 974                                         "\t$data\n" .
 975                                         "</div>\n";
 976                         }
 977                 } else {
 978                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 979                 }
 980
 981                 return $data;
 982         }
 983
 984         /**
 985          * Generate debug data HTML for displaying at the bottom of the main content
 986          * area.
 987          * @return String HTML containing debug data, if enabled (otherwise empty).
 988          */
 989         protected function generateDebugHTML() {
 990                 global $wgShowDebug, $wgOut;
 991
 992                 if ( $wgShowDebug ) {
 993                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 994                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 995                                 $listInternals . "</ul>\n";
 996                 }
 997
 998                 return '';
 999         }
1000
1001         private function formatDebugHTML( $debugText ) {
1002                 $lines = explode( "\n", $debugText );
1003                 $curIdent = 0;
1004                 $ret = '<li>';
1005
1006                 foreach ( $lines as $line ) {
1007                         $m = array();
1008                         $display = ltrim( $line );
1009                         $ident = strlen( $line ) - strlen( $display );
1010                         $diff = $ident - $curIdent;
1011
1012                         if ( $display == '' ) {
1013                                 $display = "\xc2\xa0";
1014                         }
1015
1016                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
1017                                 $ident = $curIdent;
1018                                 $diff = 0;
1019                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
1020                         } else {
1021                                 $display = htmlspecialchars( $display );
1022                         }
1023
1024                         if ( $diff < 0 ) {
1025                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
1026                         } elseif ( $diff == 0 ) {
1027                                 $ret .= "</li><li>\n";
1028                         } else {
1029                                 $ret .= str_repeat( "<ul><li>\n", $diff );
1030                         }
1031                         $ret .= $display . "\n";
1032
1033                         $curIdent = $ident;
1034                 }
1035
1036                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
1037
1038                 return $ret;
1039         }
1040
1041         /**
1042          * This gets called shortly before the </body> tag.
1043          * @return String HTML to be put before </body>
1044          */
1045         function afterContent() {
1046                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
1047                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
1048         }
1049
1050         /**
1051          * This gets called shortly before the </body> tag.
1052          * @param $out OutputPage object
1053          * @return String HTML-wrapped JS code to be put before </body>
1054          */
1055         function bottomScripts( $out ) {
1056                 $bottomScriptText = "\n" . $out->getHeadScripts( $this );
1057                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
1058
1059                 return $bottomScriptText;
1060         }
1061
1062         /** @return string Retrievied from HTML text */
1063         function printSource() {
1064                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
1065                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
1066         }
1067
1068         function printFooter() {
1069                 return "<p>" .  $this->printSource() .
1070                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1071         }
1072
1073         /** overloaded by derived classes */
1074         function doAfterContent() {
1075                 return '</div></div>';
1076         }
1077
1078         function pageTitleLinks() {
1079                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1080
1081                 $oldid = $wgRequest->getVal( 'oldid' );
1082                 $diff = $wgRequest->getVal( 'diff' );
1083                 $action = $wgRequest->getText( 'action' );
1084
1085                 $s[] = $this->printableLink();
1086                 $disclaimer = $this->disclaimerLink(); # may be empty
1087
1088                 if ( $disclaimer ) {
1089                         $s[] = $disclaimer;
1090                 }
1091
1092                 $privacy = $this->privacyLink(); # may be empty too
1093
1094                 if ( $privacy ) {
1095                         $s[] = $privacy;
1096                 }
1097
1098                 if ( $wgOut->isArticleRelated() ) {
1099                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1100                                 $name = $this->mTitle->getDBkey();
1101                                 $image = wfFindFile( $this->mTitle );
1102
1103                                 if ( $image ) {
1104                                         $link = htmlspecialchars( $image->getURL() );
1105                                         $style = $this->getInternalLinkAttributes( $link, $name );
1106                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1107                                 }
1108                         }
1109                 }
1110
1111                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1112                         $s[] .= $this->link(
1113                                         $this->mTitle,
1114                                         wfMsg( 'currentrev' ),
1115                                         array(),
1116                                         array(),
1117                                         array( 'known', 'noclasses' )
1118                         );
1119                 }
1120
1121                 if ( $wgUser->getNewtalk() ) {
1122                         # do not show "You have new messages" text when we are viewing our
1123                         # own talk page
1124                         if ( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1125                                 $tl = $this->link(
1126                                         $wgUser->getTalkPage(),
1127                                         wfMsgHtml( 'newmessageslink' ),
1128                                         array(),
1129                                         array( 'redirect' => 'no' ),
1130                                         array( 'known', 'noclasses' )
1131                                 );
1132
1133                                 $dl = $this->link(
1134                                         $wgUser->getTalkPage(),
1135                                         wfMsgHtml( 'newmessagesdifflink' ),
1136                                         array(),
1137                                         array( 'diff' => 'cur' ),
1138                                         array( 'known', 'noclasses' )
1139                                 );
1140                                 $s[] = '<strong>' . wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1141                                 # disable caching
1142                                 $wgOut->setSquidMaxage( 0 );
1143                                 $wgOut->enableClientCache( false );
1144                         }
1145                 }
1146
1147                 $undelete = $this->getUndeleteLink();
1148
1149                 if ( !empty( $undelete ) ) {
1150                         $s[] = $undelete;
1151                 }
1152
1153                 return $wgLang->pipeList( $s );
1154         }
1155
1156         function getUndeleteLink() {
1157                 global $wgUser, $wgLang, $wgRequest;
1158
1159                 $action = $wgRequest->getVal( 'action', 'view' );
1160
1161                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1162                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1163                         $n = $this->mTitle->isDeleted();
1164
1165                         if ( $n ) {
1166                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1167                                         $msg = 'thisisdeleted';
1168                                 } else {
1169                                         $msg = 'viewdeleted';
1170                                 }
1171
1172                                 return wfMsg(
1173                                         $msg,
1174                                         $this->link(
1175                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1176                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1177                                                 array(),
1178                                                 array(),
1179                                                 array( 'known', 'noclasses' )
1180                                         )
1181                                 );
1182                         }
1183                 }
1184
1185                 return '';
1186         }
1187
1188         function printableLink() {
1189                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1190
1191                 $s = array();
1192
1193                 if ( !$wgOut->isPrintable() ) {
1194                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1195                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1196                 }
1197
1198                 if ( $wgOut->isSyndicated() ) {
1199                         foreach ( $wgFeedClasses as $format => $class ) {
1200                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1201                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1202                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1203                         }
1204                 }
1205                 return $wgLang->pipeList( $s );
1206         }
1207
1208         /**
1209          * Gets the h1 element with the page title.
1210          * @return string
1211          */
1212         function pageTitle() {
1213                 global $wgOut;
1214                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1215                 return $s;
1216         }
1217
1218         function pageSubtitle() {
1219                 global $wgOut;
1220
1221                 $sub = $wgOut->getSubtitle();
1222
1223                 if ( $sub == '' ) {
1224                         global $wgExtraSubtitle;
1225                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1226                 }
1227
1228                 $subpages = $this->subPageSubtitle();
1229                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1230                 $s = "<p class='subtitle'>{$sub}</p>\n";
1231
1232                 return $s;
1233         }
1234
1235         function subPageSubtitle() {
1236                 $subpages = '';
1237
1238                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) ) {
1239                         return $subpages;
1240                 }
1241
1242                 global $wgOut;
1243
1244                 if ( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1245                         $ptext = $this->mTitle->getPrefixedText();
1246                         if ( preg_match( '/\//', $ptext ) ) {
1247                                 $links = explode( '/', $ptext );
1248                                 array_pop( $links );
1249                                 $c = 0;
1250                                 $growinglink = '';
1251                                 $display = '';
1252
1253                                 foreach ( $links as $link ) {
1254                                         $growinglink .= $link;
1255                                         $display .= $link;
1256                                         $linkObj = Title::newFromText( $growinglink );
1257
1258                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
1259                                                 $getlink = $this->link(
1260                                                         $linkObj,
1261                                                         htmlspecialchars( $display ),
1262                                                         array(),
1263                                                         array(),
1264                                                         array( 'known', 'noclasses' )
1265                                                 );
1266
1267                                                 $c++;
1268
1269                                                 if ( $c > 1 ) {
1270                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1271                                                 } else  {
1272                                                         $subpages .= '&lt; ';
1273                                                 }
1274
1275                                                 $subpages .= $getlink;
1276                                                 $display = '';
1277                                         } else {
1278                                                 $display .= '/';
1279                                         }
1280                                         $growinglink .= '/';
1281                                 }
1282                         }
1283                 }
1284
1285                 return $subpages;
1286         }
1287
1288         /**
1289          * Returns true if the IP should be shown in the header
1290          */
1291         function showIPinHeader() {
1292                 global $wgShowIPinHeader;
1293                 return $wgShowIPinHeader && session_id() != '';
1294         }
1295
1296         function nameAndLogin() {
1297                 global $wgUser, $wgLang, $wgContLang;
1298
1299                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1300
1301                 $ret = '';
1302
1303                 if ( $wgUser->isAnon() ) {
1304                         if ( $this->showIPinHeader() ) {
1305                                 $name = wfGetIP();
1306
1307                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1308                                         $wgLang->getNsText( NS_TALK ) );
1309
1310                                 $ret .= "$name ($talkLink)";
1311                         } else {
1312                                 $ret .= wfMsg( 'notloggedin' );
1313                         }
1314
1315                         $returnTo = $this->mTitle->getPrefixedDBkey();
1316                         $query = array();
1317
1318                         if ( $logoutPage != $returnTo ) {
1319                                 $query['returnto'] = $returnTo;
1320                         }
1321
1322                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1323                                 ? 'nav-login-createaccount'
1324                                 : 'login';
1325                         $ret .= "\n<br />" . $this->link(
1326                                 SpecialPage::getTitleFor( 'Userlogin' ),
1327                                 wfMsg( $loginlink ), array(), $query
1328                         );
1329                 } else {
1330                         $returnTo = $this->mTitle->getPrefixedDBkey();
1331                         $talkLink = $this->link( $wgUser->getTalkPage(),
1332                                 $wgLang->getNsText( NS_TALK ) );
1333
1334                         $ret .= $this->link( $wgUser->getUserPage(),
1335                                 htmlspecialchars( $wgUser->getName() ) );
1336                         $ret .= " ($talkLink)<br />";
1337                         $ret .= $wgLang->pipeList( array(
1338                                 $this->link(
1339                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1340                                         array(), array( 'returnto' => $returnTo )
1341                                 ),
1342                                 $this->specialLink( 'preferences' ),
1343                         ) );
1344                 }
1345
1346                 $ret = $wgLang->pipeList( array(
1347                         $ret,
1348                         $this->link(
1349                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1350                                 wfMsg( 'help' )
1351                         ),
1352                 ) );
1353
1354                 return $ret;
1355         }
1356
1357         function getSearchLink() {
1358                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1359                 return $searchPage->getLocalURL();
1360         }
1361
1362         function escapeSearchLink() {
1363                 return htmlspecialchars( $this->getSearchLink() );
1364         }
1365
1366         function searchForm() {
1367                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1368
1369                 $search = $wgRequest->getText( 'search' );
1370
1371                 $s = '<form id="searchform' . $this->searchboxes . '" name="search" class="inline" method="post" action="'
1372                   . $this->escapeSearchLink() . "\">\n"
1373                   . '<input type="text" id="searchInput' . $this->searchboxes . '" name="search" size="19" value="'
1374                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1375                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1376
1377                 if ( $wgUseTwoButtonsSearchForm ) {
1378                         $s .= '&#160;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1379                 } else {
1380                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1381                 }
1382
1383                 $s .= '</form>';
1384
1385                 // Ensure unique id's for search boxes made after the first
1386                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1387
1388                 return $s;
1389         }
1390
1391         function topLinks() {
1392                 global $wgOut;
1393
1394                 $s = array(
1395                         $this->mainPageLink(),
1396                         $this->specialLink( 'recentchanges' )
1397                 );
1398
1399                 if ( $wgOut->isArticleRelated() ) {
1400                         $s[] = $this->editThisPage();
1401                         $s[] = $this->historyLink();
1402                 }
1403
1404                 # Many people don't like this dropdown box
1405                 # $s[] = $this->specialPagesList();
1406
1407                 if ( $this->variantLinks() ) {
1408                         $s[] = $this->variantLinks();
1409                 }
1410
1411                 if ( $this->extensionTabLinks() ) {
1412                         $s[] = $this->extensionTabLinks();
1413                 }
1414
1415                 // @todo FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1416                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1417         }
1418
1419         /**
1420          * Compatibility for extensions adding functionality through tabs.
1421          * Eventually these old skins should be replaced with SkinTemplate-based
1422          * versions, sigh...
1423          * @return string
1424          */
1425         function extensionTabLinks() {
1426                 $tabs = array();
1427                 $out = '';
1428                 $s = array();
1429                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1430                 foreach ( $tabs as $tab ) {
1431                         $s[] = Xml::element( 'a',
1432                                 array( 'href' => $tab['href'] ),
1433                                 $tab['text'] );
1434                 }
1435
1436                 if ( count( $s ) ) {
1437                         global $wgLang;
1438
1439                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1440                         $out .= $wgLang->pipeList( $s );
1441                 }
1442
1443                 return $out;
1444         }
1445
1446         /**
1447          * Language/charset variant links for classic-style skins
1448          * @return string
1449          */
1450         function variantLinks() {
1451                 $s = '';
1452
1453                 /* show links to different language variants */
1454                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1455
1456                 $variants = $wgContLang->getVariants();
1457
1458                 if ( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1459                         foreach ( $variants as $code ) {
1460                                 $varname = $wgContLang->getVariantname( $code );
1461
1462                                 if ( $varname == 'disable' ) {
1463                                         continue;
1464                                 }
1465                                 $s = $wgLang->pipeList( array(
1466                                         $s,
1467                                         '<a href="' . $this->mTitle->escapeLocalURL( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1468                                 ) );
1469                         }
1470                 }
1471
1472                 return $s;
1473         }
1474
1475         function bottomLinks() {
1476                 global $wgOut, $wgUser, $wgUseTrackbacks;
1477                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1478
1479                 $s = '';
1480                 if ( $wgOut->isArticleRelated() ) {
1481                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1482
1483                         if ( $wgUser->isLoggedIn() ) {
1484                                 $element[] = $this->watchThisPage();
1485                         }
1486
1487                         $element[] = $this->talkLink();
1488                         $element[] = $this->historyLink();
1489                         $element[] = $this->whatLinksHere();
1490                         $element[] = $this->watchPageLinksLink();
1491
1492                         if ( $wgUseTrackbacks ) {
1493                                 $element[] = $this->trackbackLink();
1494                         }
1495
1496                         if (
1497                                 $this->mTitle->getNamespace() == NS_USER ||
1498                                 $this->mTitle->getNamespace() == NS_USER_TALK
1499                         ) {
1500                                 $id = User::idFromName( $this->mTitle->getText() );
1501                                 $ip = User::isIP( $this->mTitle->getText() );
1502
1503                                 # Both anons and non-anons have contributions list
1504                                 if ( $id || $ip ) {
1505                                         $element[] = $this->userContribsLink();
1506                                 }
1507
1508                                 if ( $this->showEmailUser( $id ) ) {
1509                                         $element[] = $this->emailUserLink();
1510                                 }
1511                         }
1512
1513                         $s = implode( $element, $sep );
1514
1515                         if ( $this->mTitle->getArticleId() ) {
1516                                 $s .= "\n<br />";
1517
1518                                 // Delete/protect/move links for privileged users
1519                                 if ( $wgUser->isAllowed( 'delete' ) ) {
1520                                         $s .= $this->deleteThisPage();
1521                                 }
1522
1523                                 if ( $wgUser->isAllowed( 'protect' ) ) {
1524                                         $s .= $sep . $this->protectThisPage();
1525                                 }
1526
1527                                 if ( $wgUser->isAllowed( 'move' ) ) {
1528                                         $s .= $sep . $this->moveThisPage();
1529                                 }
1530                         }
1531
1532                         $s .= "<br />\n" . $this->otherLanguages();
1533                 }
1534
1535                 return $s;
1536         }
1537
1538         function pageStats() {
1539                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1540                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1541
1542                 $oldid = $wgRequest->getVal( 'oldid' );
1543                 $diff = $wgRequest->getVal( 'diff' );
1544
1545                 if ( !$wgOut->isArticle() ) {
1546                         return '';
1547                 }
1548
1549                 if ( !$wgArticle instanceof Article ) {
1550                         return '';
1551                 }
1552
1553                 if ( isset( $oldid ) || isset( $diff ) ) {
1554                         return '';
1555                 }
1556
1557                 if ( 0 == $wgArticle->getID() ) {
1558                         return '';
1559                 }
1560
1561                 $s = '';
1562
1563                 if ( !$wgDisableCounters ) {
1564                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1565
1566                         if ( $count ) {
1567                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1568                         }
1569                 }
1570
1571                 if ( $wgMaxCredits != 0 ) {
1572                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1573                 } else {
1574                         $s .= $this->lastModified();
1575                 }
1576
1577                 if ( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1578                         $dbr = wfGetDB( DB_SLAVE );
1579                         $res = $dbr->select(
1580                                 'watchlist',
1581                                 array( 'COUNT(*) AS n' ),
1582                                 array(
1583                                         'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ),
1584                                         'wl_namespace' => $this->mTitle->getNamespace()
1585                                 ),
1586                                 __METHOD__
1587                         );
1588                         $x = $dbr->fetchObject( $res );
1589
1590                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1591                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1592                         );
1593                 }
1594
1595                 return $s . ' ' .  $this->getCopyright();
1596         }
1597
1598         function getCopyright( $type = 'detect' ) {
1599                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1600
1601                 if ( $type == 'detect' ) {
1602                         $diff = $wgRequest->getVal( 'diff' );
1603                         $isCur = $wgArticle && $wgArticle->isCurrent();
1604
1605                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1606                                 $type = 'history';
1607                         } else {
1608                                 $type = 'normal';
1609                         }
1610                 }
1611
1612                 if ( $type == 'history' ) {
1613                         $msg = 'history_copyright';
1614                 } else {
1615                         $msg = 'copyright';
1616                 }
1617
1618                 $out = '';
1619
1620                 if ( $wgRightsPage ) {
1621                         $title = Title::newFromText( $wgRightsPage );
1622                         $link = $this->linkKnown( $title, $wgRightsText );
1623                 } elseif ( $wgRightsUrl ) {
1624                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1625                 } elseif ( $wgRightsText ) {
1626                         $link = $wgRightsText;
1627                 } else {
1628                         # Give up now
1629                         return $out;
1630                 }
1631
1632                 // Allow for site and per-namespace customization of copyright notice.
1633                 $forContent = true;
1634
1635                 if ( isset( $wgArticle ) ) {
1636                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link, &$forContent ) );
1637                 }
1638
1639                 if ( $forContent ) {
1640                         $out .= wfMsgForContent( $msg, $link );
1641                 } else {
1642                         $out .= wfMsg( $msg, $link );
1643                 }
1644
1645                 return $out;
1646         }
1647
1648         function getCopyrightIcon() {
1649                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1650
1651                 $out = '';
1652
1653                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1654                         $out = $wgCopyrightIcon;
1655                 } elseif ( $wgRightsIcon ) {
1656                         $icon = htmlspecialchars( $wgRightsIcon );
1657
1658                         if ( $wgRightsUrl ) {
1659                                 $url = htmlspecialchars( $wgRightsUrl );
1660                                 $out .= '<a href="' . $url . '">';
1661                         }
1662
1663                         $text = htmlspecialchars( $wgRightsText );
1664                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1665
1666                         if ( $wgRightsUrl ) {
1667                                 $out .= '</a>';
1668                         }
1669                 }
1670
1671                 return $out;
1672         }
1673
1674         /**
1675          * Gets the powered by MediaWiki icon.
1676          * @return string
1677          */
1678         function getPoweredBy() {
1679                 global $wgStylePath;
1680
1681                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1682                 $img = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1683
1684                 return $img;
1685         }
1686
1687         function lastModified() {
1688                 global $wgLang, $wgArticle;
1689
1690                 if ( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest() ) {
1691                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1692                 } else {
1693                         $timestamp = $wgArticle->getTimestamp();
1694                 }
1695
1696                 if ( $timestamp ) {
1697                         $d = $wgLang->date( $timestamp, true );
1698                         $t = $wgLang->time( $timestamp, true );
1699                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1700                 } else {
1701                         $s = '';
1702                 }
1703
1704                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1705                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1706                 }
1707
1708                 return $s;
1709         }
1710
1711         function logoText( $align = '' ) {
1712                 if ( $align != '' ) {
1713                         $a = " align='{$align}'";
1714                 } else {
1715                         $a = '';
1716                 }
1717
1718                 $mp = wfMsg( 'mainpage' );
1719                 $mptitle = Title::newMainPage();
1720                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1721
1722                 $logourl = $this->getLogo();
1723                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1724
1725                 return $s;
1726         }
1727
1728         /**
1729          * Show a drop-down box of special pages
1730          */
1731         function specialPagesList() {
1732                 global $wgContLang, $wgServer, $wgRedirectScript;
1733
1734                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1735
1736                 foreach ( $pages as $name => $page ) {
1737                         $pages[$name] = $page->getDescription();
1738                 }
1739
1740                 $go = wfMsg( 'go' );
1741                 $sp = wfMsg( 'specialpages' );
1742                 $spp = $wgContLang->specialPage( 'Specialpages' );
1743
1744                 $s = '<form id="specialpages" method="get" ' .
1745                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1746                 $s .= "<select name=\"wpDropdown\">\n";
1747                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1748
1749
1750                 foreach ( $pages as $name => $desc ) {
1751                         $p = $wgContLang->specialPage( $name );
1752                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1753                 }
1754
1755                 $s .= "</select>\n";
1756                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1757                 $s .= "</form>\n";
1758
1759                 return $s;
1760         }
1761
1762         /**
1763          * Gets the link to the wiki's main page.
1764          * @return string
1765          */
1766         function mainPageLink() {
1767                 $s = $this->link(
1768                         Title::newMainPage(),
1769                         wfMsg( 'mainpage' ),
1770                         array(),
1771                         array(),
1772                         array( 'known', 'noclasses' )
1773                 );
1774
1775                 return $s;
1776         }
1777
1778         private function footerLink( $desc, $page ) {
1779                 // if the link description has been set to "-" in the default language,
1780                 if ( wfMsgForContent( $desc )  == '-' ) {
1781                         // then it is disabled, for all languages.
1782                         return '';
1783                 } else {
1784                         // Otherwise, we display the link for the user, described in their
1785                         // language (which may or may not be the same as the default language),
1786                         // but we make the link target be the one site-wide page.
1787                         $title = Title::newFromText( wfMsgForContent( $page ) );
1788
1789                         return $this->linkKnown(
1790                                 $title,
1791                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1792                         );
1793                 }
1794         }
1795
1796         /**
1797          * Gets the link to the wiki's privacy policy page.
1798          */
1799         function privacyLink() {
1800                 return $this->footerLink( 'privacy', 'privacypage' );
1801         }
1802
1803         /**
1804          * Gets the link to the wiki's about page.
1805          */
1806         function aboutLink() {
1807                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1808         }
1809
1810         /**
1811          * Gets the link to the wiki's general disclaimers page.
1812          */
1813         function disclaimerLink() {
1814                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1815         }
1816
1817         function editThisPage() {
1818                 global $wgOut;
1819
1820                 if ( !$wgOut->isArticleRelated() ) {
1821                         $s = wfMsg( 'protectedpage' );
1822                 } else {
1823                         if ( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1824                                 $t = wfMsg( 'editthispage' );
1825                         } elseif ( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1826                                 $t = wfMsg( 'create-this-page' );
1827                         } else {
1828                                 $t = wfMsg( 'viewsource' );
1829                         }
1830
1831                         $s = $this->link(
1832                                 $this->mTitle,
1833                                 $t,
1834                                 array(),
1835                                 $this->editUrlOptions(),
1836                                 array( 'known', 'noclasses' )
1837                         );
1838                 }
1839
1840                 return $s;
1841         }
1842
1843         /**
1844          * Return URL options for the 'edit page' link.
1845          * This may include an 'oldid' specifier, if the current page view is such.
1846          *
1847          * @return array
1848          * @private
1849          */
1850         function editUrlOptions() {
1851                 global $wgArticle;
1852
1853                 $options = array( 'action' => 'edit' );
1854
1855                 if ( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1856                         $options['oldid'] = intval( $this->mRevisionId );
1857                 }
1858
1859                 return $options;
1860         }
1861
1862         function deleteThisPage() {
1863                 global $wgUser, $wgRequest;
1864
1865                 $diff = $wgRequest->getVal( 'diff' );
1866
1867                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1868                         $t = wfMsg( 'deletethispage' );
1869
1870                         $s = $this->link(
1871                                 $this->mTitle,
1872                                 $t,
1873                                 array(),
1874                                 array( 'action' => 'delete' ),
1875                                 array( 'known', 'noclasses' )
1876                         );
1877                 } else {
1878                         $s = '';
1879                 }
1880
1881                 return $s;
1882         }
1883
1884         function protectThisPage() {
1885                 global $wgUser, $wgRequest;
1886
1887                 $diff = $wgRequest->getVal( 'diff' );
1888
1889                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed( 'protect' ) ) {
1890                         if ( $this->mTitle->isProtected() ) {
1891                                 $text = wfMsg( 'unprotectthispage' );
1892                                 $query = array( 'action' => 'unprotect' );
1893                         } else {
1894                                 $text = wfMsg( 'protectthispage' );
1895                                 $query = array( 'action' => 'protect' );
1896                         }
1897
1898                         $s = $this->link(
1899                                 $this->mTitle,
1900                                 $text,
1901                                 array(),
1902                                 $query,
1903                                 array( 'known', 'noclasses' )
1904                         );
1905                 } else {
1906                         $s = '';
1907                 }
1908
1909                 return $s;
1910         }
1911
1912         function watchThisPage() {
1913                 global $wgOut;
1914                 ++$this->mWatchLinkNum;
1915
1916                 if ( $wgOut->isArticleRelated() ) {
1917                         if ( $this->mTitle->userIsWatching() ) {
1918                                 $text = wfMsg( 'unwatchthispage' );
1919                                 $query = array( 'action' => 'unwatch' );
1920                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1921                         } else {
1922                                 $text = wfMsg( 'watchthispage' );
1923                                 $query = array( 'action' => 'watch' );
1924                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1925                         }
1926
1927                         $s = $this->link(
1928                                 $this->mTitle,
1929                                 $text,
1930                                 array( 'id' => $id ),
1931                                 $query,
1932                                 array( 'known', 'noclasses' )
1933                         );
1934                 } else {
1935                         $s = wfMsg( 'notanarticle' );
1936                 }
1937
1938                 return $s;
1939         }
1940
1941         function moveThisPage() {
1942                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1943                         return $this->link(
1944                                 SpecialPage::getTitleFor( 'Movepage' ),
1945                                 wfMsg( 'movethispage' ),
1946                                 array(),
1947                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1948                                 array( 'known', 'noclasses' )
1949                         );
1950                 } else {
1951                         // no message if page is protected - would be redundant
1952                         return '';
1953                 }
1954         }
1955
1956         function historyLink() {
1957                 return $this->link(
1958                         $this->mTitle,
1959                         wfMsgHtml( 'history' ),
1960                         array( 'rel' => 'archives' ),
1961                         array( 'action' => 'history' )
1962                 );
1963         }
1964
1965         function whatLinksHere() {
1966                 return $this->link(
1967                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1968                         wfMsgHtml( 'whatlinkshere' ),
1969                         array(),
1970                         array(),
1971                         array( 'known', 'noclasses' )
1972                 );
1973         }
1974
1975         function userContribsLink() {
1976                 return $this->link(
1977                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1978                         wfMsgHtml( 'contributions' ),
1979                         array(),
1980                         array(),
1981                         array( 'known', 'noclasses' )
1982                 );
1983         }
1984
1985         function showEmailUser( $id ) {
1986                 global $wgUser;
1987                 $targetUser = User::newFromId( $id );
1988                 return $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1989                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1990         }
1991
1992         function emailUserLink() {
1993                 return $this->link(
1994                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1995                         wfMsg( 'emailuser' ),
1996                         array(),
1997                         array(),
1998                         array( 'known', 'noclasses' )
1999                 );
2000         }
2001
2002         function watchPageLinksLink() {
2003                 global $wgOut;
2004
2005                 if ( !$wgOut->isArticleRelated() ) {
2006                         return '(' . wfMsg( 'notanarticle' ) . ')';
2007                 } else {
2008                         return $this->link(
2009                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
2010                                 wfMsg( 'recentchangeslinked-toolbox' ),
2011                                 array(),
2012                                 array(),
2013                                 array( 'known', 'noclasses' )
2014                         );
2015                 }
2016         }
2017
2018         function trackbackLink() {
2019                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
2020                         . wfMsg( 'trackbacklink' ) . '</a>';
2021         }
2022
2023         function otherLanguages() {
2024                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
2025
2026                 if ( $wgHideInterlanguageLinks ) {
2027                         return '';
2028                 }
2029
2030                 $a = $wgOut->getLanguageLinks();
2031
2032                 if ( 0 == count( $a ) ) {
2033                         return '';
2034                 }
2035
2036                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
2037                 $first = true;
2038
2039                 if ( $wgContLang->isRTL() ) {
2040                         $s .= '<span dir="LTR">';
2041                 }
2042
2043                 foreach ( $a as $l ) {
2044                         if ( !$first ) {
2045                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
2046                         }
2047
2048                         $first = false;
2049
2050                         $nt = Title::newFromText( $l );
2051                         $url = $nt->escapeFullURL();
2052                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
2053                         $title = htmlspecialchars( $nt->getText() );
2054
2055                         if ( $text == '' ) {
2056                                 $text = $l;
2057                         }
2058
2059                         $style = $this->getExternalLinkAttributes();
2060                         $s .= "<a href=\"{$url}\" title=\"{$title}\"{$style}>{$text}</a>";
2061                 }
2062
2063                 if ( $wgContLang->isRTL() ) {
2064                         $s .= '</span>';
2065                 }
2066
2067                 return $s;
2068         }
2069
2070         function talkLink() {
2071                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
2072                         # No discussion links for special pages
2073                         return '';
2074                 }
2075
2076                 $linkOptions = array();
2077
2078                 if ( $this->mTitle->isTalkPage() ) {
2079                         $link = $this->mTitle->getSubjectPage();
2080                         switch( $link->getNamespace() ) {
2081                                 case NS_MAIN:
2082                                         $text = wfMsg( 'articlepage' );
2083                                         break;
2084                                 case NS_USER:
2085                                         $text = wfMsg( 'userpage' );
2086                                         break;
2087                                 case NS_PROJECT:
2088                                         $text = wfMsg( 'projectpage' );
2089                                         break;
2090                                 case NS_FILE:
2091                                         $text = wfMsg( 'imagepage' );
2092                                         # Make link known if image exists, even if the desc. page doesn't.
2093                                         if ( wfFindFile( $link ) )
2094                                                 $linkOptions[] = 'known';
2095                                         break;
2096                                 case NS_MEDIAWIKI:
2097                                         $text = wfMsg( 'mediawikipage' );
2098                                         break;
2099                                 case NS_TEMPLATE:
2100                                         $text = wfMsg( 'templatepage' );
2101                                         break;
2102                                 case NS_HELP:
2103                                         $text = wfMsg( 'viewhelppage' );
2104                                         break;
2105                                 case NS_CATEGORY:
2106                                         $text = wfMsg( 'categorypage' );
2107                                         break;
2108                                 default:
2109                                         $text = wfMsg( 'articlepage' );
2110                         }
2111                 } else {
2112                         $link = $this->mTitle->getTalkPage();
2113                         $text = wfMsg( 'talkpage' );
2114                 }
2115
2116                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
2117
2118                 return $s;
2119         }
2120
2121         function commentLink() {
2122                 global $wgOut;
2123
2124                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
2125                         return '';
2126                 }
2127
2128                 # __NEWSECTIONLINK___ changes behaviour here
2129                 # If it is present, the link points to this page, otherwise
2130                 # it points to the talk page
2131                 if ( $this->mTitle->isTalkPage() ) {
2132                         $title = $this->mTitle;
2133                 } elseif ( $wgOut->showNewSectionLink() ) {
2134                         $title = $this->mTitle;
2135                 } else {
2136                         $title = $this->mTitle->getTalkPage();
2137                 }
2138
2139                 return $this->link(
2140                         $title,
2141                         wfMsg( 'postcomment' ),
2142                         array(),
2143                         array(
2144                                 'action' => 'edit',
2145                                 'section' => 'new'
2146                         ),
2147                         array( 'known', 'noclasses' )
2148                 );
2149         }
2150
2151         function getUploadLink() {
2152                 global $wgUploadNavigationUrl;
2153
2154                 if ( $wgUploadNavigationUrl ) {
2155                         # Using an empty class attribute to avoid automatic setting of "external" class
2156                         return $this->makeExternalLink( $wgUploadNavigationUrl, wfMsgHtml( 'upload' ), false, null, array( 'class' => '' ) );
2157                 } else {
2158                         return $this->link(
2159                                 SpecialPage::getTitleFor( 'Upload' ),
2160                                 wfMsgHtml( 'upload' ),
2161                                 array(),
2162                                 array(),
2163                                 array( 'known', 'noclasses' )
2164                         );
2165                 }
2166         }
2167
2168         /* these are used extensively in SkinTemplate, but also some other places */
2169         static function makeMainPageUrl( $urlaction = '' ) {
2170                 $title = Title::newMainPage();
2171                 self::checkTitle( $title, '' );
2172
2173                 return $title->getLocalURL( $urlaction );
2174         }
2175
2176         static function makeSpecialUrl( $name, $urlaction = '' ) {
2177                 $title = SpecialPage::getTitleFor( $name );
2178                 return $title->getLocalURL( $urlaction );
2179         }
2180
2181         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
2182                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
2183                 return $title->getLocalURL( $urlaction );
2184         }
2185
2186         static function makeI18nUrl( $name, $urlaction = '' ) {
2187                 $title = Title::newFromText( wfMsgForContent( $name ) );
2188                 self::checkTitle( $title, $name );
2189                 return $title->getLocalURL( $urlaction );
2190         }
2191
2192         static function makeUrl( $name, $urlaction = '' ) {
2193                 $title = Title::newFromText( $name );
2194                 self::checkTitle( $title, $name );
2195
2196                 return $title->getLocalURL( $urlaction );
2197         }
2198
2199         /**
2200          * If url string starts with http, consider as external URL, else
2201          * internal
2202          */
2203         static function makeInternalOrExternalUrl( $name ) {
2204                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
2205                         return $name;
2206                 } else {
2207                         return self::makeUrl( $name );
2208                 }
2209         }
2210
2211         # this can be passed the NS number as defined in Language.php
2212         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
2213                 $title = Title::makeTitleSafe( $namespace, $name );
2214                 self::checkTitle( $title, $name );
2215
2216                 return $title->getLocalURL( $urlaction );
2217         }
2218
2219         /* these return an array with the 'href' and boolean 'exists' */
2220         static function makeUrlDetails( $name, $urlaction = '' ) {
2221                 $title = Title::newFromText( $name );
2222                 self::checkTitle( $title, $name );
2223
2224                 return array(
2225                         'href' => $title->getLocalURL( $urlaction ),
2226                         'exists' => $title->getArticleID() != 0 ? true : false
2227                 );
2228         }
2229
2230         /**
2231          * Make URL details where the article exists (or at least it's convenient to think so)
2232          */
2233         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2234                 $title = Title::newFromText( $name );
2235                 self::checkTitle( $title, $name );
2236
2237                 return array(
2238                         'href' => $title->getLocalURL( $urlaction ),
2239                         'exists' => true
2240                 );
2241         }
2242
2243         # make sure we have some title to operate on
2244         static function checkTitle( &$title, $name ) {
2245                 if ( !is_object( $title ) ) {
2246                         $title = Title::newFromText( $name );
2247                         if ( !is_object( $title ) ) {
2248                                 $title = Title::newFromText( '--error: link target missing--' );
2249                         }
2250                 }
2251         }
2252
2253         /**
2254          * Build an array that represents the sidebar(s), the navigation bar among them
2255          *
2256          * @return array
2257          */
2258         function buildSidebar() {
2259                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2260                 global $wgLang;
2261                 wfProfileIn( __METHOD__ );
2262
2263                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2264
2265                 if ( $wgEnableSidebarCache ) {
2266                         $cachedsidebar = $parserMemc->get( $key );
2267                         if ( $cachedsidebar ) {
2268                                 wfProfileOut( __METHOD__ );
2269                                 return $cachedsidebar;
2270                         }
2271                 }
2272
2273                 $bar = array();
2274                 $this->addToSidebar( $bar, 'sidebar' );
2275
2276                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2277                 if ( $wgEnableSidebarCache ) {
2278                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2279                 }
2280
2281                 wfProfileOut( __METHOD__ );
2282                 return $bar;
2283         }
2284         /**
2285          * Add content from a sidebar system message
2286          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2287          *
2288          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
2289          *
2290          * @param &$bar array
2291          * @param $message String
2292          */
2293         function addToSidebar( &$bar, $message ) {
2294                 $this->addToSidebarPlain( $bar, wfMsgForContent( $message ) );
2295         }
2296
2297         /**
2298          * Add content from plain text
2299          * @since 1.17
2300          * @param &$bar array
2301          * @param $text string
2302          */
2303         function addToSidebarPlain( &$bar, $text ) {
2304                 $lines = explode( "\n", $text );
2305                 $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.
2306
2307                 $heading = '';
2308
2309                 foreach ( $lines as $line ) {
2310                         if ( strpos( $line, '*' ) !== 0 ) {
2311                                 continue;
2312                         }
2313
2314                         if ( strpos( $line, '**' ) !== 0 ) {
2315                                 $heading = trim( $line, '* ' );
2316                                 if ( !array_key_exists( $heading, $bar ) ) {
2317                                         $bar[$heading] = array();
2318                                 }
2319                         } else {
2320                                 $line = trim( $line, '* ' );
2321
2322                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
2323                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
2324                                         $link = wfMsgForContent( $line[0] );
2325
2326                                         if ( $link == '-' ) {
2327                                                 continue;
2328                                         }
2329
2330                                         $text = wfMsgExt( $line[1], 'parsemag' );
2331
2332                                         if ( wfEmptyMsg( $line[1], $text ) ) {
2333                                                 $text = $line[1];
2334                                         }
2335
2336                                         if ( wfEmptyMsg( $line[0], $link ) ) {
2337                                                 $link = $line[0];
2338                                         }
2339
2340                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2341                                                 $href = $link;
2342                                         } else {
2343                                                 $title = Title::newFromText( $link );
2344
2345                                                 if ( $title ) {
2346                                                         $title = $title->fixSpecialName();
2347                                                         $href = $title->getLocalURL();
2348                                                 } else {
2349                                                         $href = 'INVALID-TITLE';
2350                                                 }
2351                                         }
2352
2353                                         $bar[$heading][] = array(
2354                                                 'text' => $text,
2355                                                 'href' => $href,
2356                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2357                                                 'active' => false
2358                                         );
2359                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
2360                                         global $wgParser, $wgTitle;
2361
2362                                         $line = substr( $line, 2, strlen( $line ) - 4 );
2363
2364                                         if ( is_null( $wgParser->mOptions ) ) {
2365                                                 $wgParser->mOptions = new ParserOptions();
2366                                         }
2367
2368                                         $wgParser->mOptions->setEditSection( false );
2369                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $wgTitle, $wgParser->mOptions )->getText();
2370                                 } else {
2371                                         continue;
2372                                 }
2373                         }
2374                 }
2375
2376                 if ( count( $wikiBar ) > 0 ) {
2377                         $bar = array_merge( $bar, $wikiBar );
2378                 }
2379
2380                 return $bar;
2381         }
2382
2383         /**
2384          * Should we include common/wikiprintable.css?  Skins that have their own
2385          * print stylesheet should override this and return false.  (This is an
2386          * ugly hack to get Monobook to play nicely with
2387          * OutputPage::headElement().)
2388          *
2389          * @return bool
2390          */
2391         public function commonPrintStylesheet() {
2392                 return true;
2393         }
2394
2395         /**
2396          * Gets new talk page messages for the current user.
2397          * @return MediaWiki message or if no new talk page messages, nothing
2398          */
2399         function getNewtalks() {
2400                 global $wgUser, $wgOut;
2401
2402                 $newtalks = $wgUser->getNewMessageLinks();
2403                 $ntl = '';
2404
2405                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
2406                         $userTitle = $this->mUser->getUserPage();
2407                         $userTalkTitle = $userTitle->getTalkPage();
2408
2409                         if ( !$userTalkTitle->equals( $this->mTitle ) ) {
2410                                 $newMessagesLink = $this->link(
2411                                         $userTalkTitle,
2412                                         wfMsgHtml( 'newmessageslink' ),
2413                                         array(),
2414                                         array( 'redirect' => 'no' ),
2415                                         array( 'known', 'noclasses' )
2416                                 );
2417
2418                                 $newMessagesDiffLink = $this->link(
2419                                         $userTalkTitle,
2420                                         wfMsgHtml( 'newmessagesdifflink' ),
2421                                         array(),
2422                                         array( 'diff' => 'cur' ),
2423                                         array( 'known', 'noclasses' )
2424                                 );
2425
2426                                 $ntl = wfMsg(
2427                                         'youhavenewmessages',
2428                                         $newMessagesLink,
2429                                         $newMessagesDiffLink
2430                                 );
2431                                 # Disable Squid cache
2432                                 $wgOut->setSquidMaxage( 0 );
2433                         }
2434                 } elseif ( count( $newtalks ) ) {
2435                         // _>" " for BC <= 1.16
2436                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
2437                         $msgs = array();
2438
2439                         foreach ( $newtalks as $newtalk ) {
2440                                 $msgs[] = Xml::element(
2441                                         'a',
2442                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
2443                                 );
2444                         }
2445                         $parts = implode( $sep, $msgs );
2446                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
2447                         $wgOut->setSquidMaxage( 0 );
2448                 }
2449
2450                 return $ntl;
2451         }
2452 }