includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( ! defined( 'MEDIAWIKI' ) )
   7         die( 1 );
   8
   9 /**
  10  * The main skin class that provide methods and properties for all other skins.
  11  * This base class is also the "Standard" skin.
  12  *
  13  * See docs/skin.txt for more information.
  14  *
  15  * @ingroup Skins
  16  */
  17 class Skin extends Linker {
  18         /**#@+
  19          * @private
  20          */
  21         var $mWatchLinkNum = 0; // Appended to end of watch link id's
  22         // How many search boxes have we made?  Avoid duplicate id's.
  23         protected $searchboxes = '';
  24         /**#@-*/
  25         protected $mRevisionId; // The revision ID we're looking at, null if not applicable.
  26         protected $skinname = 'standard';
  27         // @fixme Should be protected :-\
  28         var $mTitle = null;
  29
  30         /** Constructor, call parent constructor */
  31         function Skin() { parent::__construct(); }
  32
  33         /**
  34          * Fetch the set of available skins.
  35          * @return array of strings
  36          * @static
  37          */
  38         static function getSkinNames() {
  39                 global $wgValidSkinNames;
  40                 static $skinsInitialised = false;
  41                 if ( !$skinsInitialised ) {
  42                         # Get a list of available skins
  43                         # Build using the regular expression '^(.*).php$'
  44                         # Array keys are all lower case, array value keep the case used by filename
  45                         #
  46                         wfProfileIn( __METHOD__ . '-init' );
  47                         global $wgStyleDirectory;
  48                         $skinDir = dir( $wgStyleDirectory );
  49
  50                         # while code from www.php.net
  51                         while( false !== ( $file = $skinDir->read() ) ) {
  52                                 // Skip non-PHP files, hidden files, and '.dep' includes
  53                                 $matches = array();
  54                                 if( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  55                                         $aSkin = $matches[1];
  56                                         $wgValidSkinNames[strtolower($aSkin)] = $aSkin;
  57                                 }
  58                         }
  59                         $skinDir->close();
  60                         $skinsInitialised = true;
  61                         wfProfileOut( __METHOD__ . '-init' );
  62                 }
  63                 return $wgValidSkinNames;
  64         }
  65
  66         /**
  67          * Fetch the list of usable skins in regards to $wgSkipSkins.
  68          * Useful for Special:Preferences and other places where you
  69          * only want to show skins users _can_ use.
  70          * @return array of strings
  71          */
  72         public static function getUsableSkins() {
  73                 global $wgSkipSkins;
  74                 $usableSkins = self::getSkinNames();
  75                 foreach ( $wgSkipSkins as $skip ) {
  76                         unset( $usableSkins[$skip] );
  77                 }
  78                 return $usableSkins;
  79         }
  80
  81         /**
  82          * Normalize a skin preference value to a form that can be loaded.
  83          * If a skin can't be found, it will fall back to the configured
  84          * default (or the old 'Classic' skin if that's broken).
  85          * @param string $key
  86          * @return string
  87          * @static
  88          */
  89         static function normalizeKey( $key ) {
  90                 global $wgDefaultSkin;
  91                 $skinNames = Skin::getSkinNames();
  92
  93                 if( $key == '' ) {
  94                         // Don't return the default immediately;
  95                         // in a misconfiguration we need to fall back.
  96                         $key = $wgDefaultSkin;
  97                 }
  98
  99                 if( isset( $skinNames[$key] ) ) {
 100                         return $key;
 101                 }
 102
 103                 // Older versions of the software used a numeric setting
 104                 // in the user preferences.
 105                 $fallback = array(
 106                         0 => $wgDefaultSkin,
 107                         1 => 'nostalgia',
 108                         2 => 'cologneblue' );
 109
 110                 if( isset( $fallback[$key] ) ){
 111                         $key = $fallback[$key];
 112                 }
 113
 114                 if( isset( $skinNames[$key] ) ) {
 115                         return $key;
 116                 } else {
 117                         return 'monobook';
 118                 }
 119         }
 120
 121         /**
 122          * Factory method for loading a skin of a given type
 123          * @param string $key 'monobook', 'standard', etc
 124          * @return Skin
 125          * @static
 126          */
 127         static function &newFromKey( $key ) {
 128                 global $wgStyleDirectory;
 129
 130                 $key = Skin::normalizeKey( $key );
 131
 132                 $skinNames = Skin::getSkinNames();
 133                 $skinName = $skinNames[$key];
 134                 $className = 'Skin'.ucfirst($key);
 135
 136                 # Grab the skin class and initialise it.
 137                 if ( !class_exists( $className ) ) {
 138                         // Preload base classes to work around APC/PHP5 bug
 139                         $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 140                         if( file_exists( $deps ) ) include_once( $deps );
 141                         require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 142
 143                         # Check if we got if not failback to default skin
 144                         if( !class_exists( $className ) ) {
 145                                 # DO NOT die if the class isn't found. This breaks maintenance
 146                                 # scripts and can cause a user account to be unrecoverable
 147                                 # except by SQL manipulation if a previously valid skin name
 148                                 # is no longer valid.
 149                                 wfDebug( "Skin class does not exist: $className\n" );
 150                                 $className = 'SkinMonobook';
 151                                 require_once( "{$wgStyleDirectory}/MonoBook.php" );
 152                         }
 153                 }
 154                 $skin = new $className;
 155                 return $skin;
 156         }
 157
 158         /** @return string path to the skin stylesheet */
 159         function getStylesheet() {
 160                 return 'common/wikistandard.css';
 161         }
 162
 163         /** @return string skin name */
 164         public function getSkinName() {
 165                 return $this->skinname;
 166         }
 167
 168         function qbSetting() {
 169                 global $wgOut, $wgUser;
 170
 171                 if ( $wgOut->isQuickbarSuppressed() ) { return 0; }
 172                 $q = $wgUser->getOption( 'quickbar', 0 );
 173                 return $q;
 174         }
 175
 176         function initPage( OutputPage $out ) {
 177                 global $wgFavicon, $wgAppleTouchIcon;
 178
 179                 wfProfileIn( __METHOD__ );
 180
 181                 # Generally the order of the favicon and apple-touch-icon links
 182                 # should not matter, but Konqueror (3.5.9 at least) incorrectly
 183                 # uses whichever one appears later in the HTML source.  Make sure
 184                 # apple-touch-icon is specified first to avoid this.
 185                 if( false !== $wgAppleTouchIcon ) {
 186                         $out->addLink( array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
 187                 }
 188
 189                 if( false !== $wgFavicon ) {
 190                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 191                 }
 192
 193                 # OpenSearch description link
 194                 $out->addLink( array(
 195                         'rel' => 'search',
 196                         'type' => 'application/opensearchdescription+xml',
 197                         'href' => wfScript( 'opensearch_desc' ),
 198                         'title' => wfMsgForContent( 'opensearch-desc' ),
 199                 ));
 200
 201                 $this->addMetadataLinks( $out );
 202
 203                 $this->mRevisionId = $out->mRevisionId;
 204
 205                 $this->preloadExistence();
 206
 207                 wfProfileOut( __METHOD__ );
 208         }
 209
 210         /**
 211          * Preload the existence of three commonly-requested pages in a single query
 212          */
 213         function preloadExistence() {
 214                 global $wgUser;
 215
 216                 // User/talk link
 217                 $titles = array( $wgUser->getUserPage(), $wgUser->getTalkPage() );
 218
 219                 // Other tab link
 220                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
 221                         // nothing
 222                 } elseif ( $this->mTitle->isTalkPage() ) {
 223                         $titles[] = $this->mTitle->getSubjectPage();
 224                 } else {
 225                         $titles[] = $this->mTitle->getTalkPage();
 226                 }
 227
 228                 $lb = new LinkBatch( $titles );
 229                 $lb->execute();
 230         }
 231
 232         function addMetadataLinks( OutputPage $out ) {
 233                 global $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 234                 global $wgRightsPage, $wgRightsUrl;
 235
 236                 if( $out->isArticleRelated() ) {
 237                         # note: buggy CC software only reads first "meta" link
 238                         if( $wgEnableCreativeCommonsRdf ) {
 239                                 $out->addMetadataLink( array(
 240                                         'title' => 'Creative Commons',
 241                                         'type' => 'application/rdf+xml',
 242                                         'href' => $this->mTitle->getLocalURL( 'action=creativecommons' ) )
 243                                 );
 244                         }
 245                         if( $wgEnableDublinCoreRdf ) {
 246                                 $out->addMetadataLink( array(
 247                                         'title' => 'Dublin Core',
 248                                         'type' => 'application/rdf+xml',
 249                                         'href' => $this->mTitle->getLocalURL( 'action=dublincore' ) )
 250                                 );
 251                         }
 252                 }
 253                 $copyright = '';
 254                 if( $wgRightsPage ) {
 255                         $copy = Title::newFromText( $wgRightsPage );
 256                         if( $copy ) {
 257                                 $copyright = $copy->getLocalURL();
 258                         }
 259                 }
 260                 if( !$copyright && $wgRightsUrl ) {
 261                         $copyright = $wgRightsUrl;
 262                 }
 263                 if( $copyright ) {
 264                         $out->addLink( array(
 265                                 'rel' => 'copyright',
 266                                 'href' => $copyright )
 267                         );
 268                 }
 269         }
 270
 271         /**
 272          * Set some local variables
 273          */
 274         protected function setMembers(){
 275                 global $wgUser;
 276                 $this->mUser = $wgUser;
 277                 $this->userpage = $wgUser->getUserPage()->getPrefixedText();
 278                 $this->usercss = false;
 279         }
 280
 281         /**
 282          * Set the title
 283          * @param Title $t The title to use
 284          */
 285         public function setTitle( $t ) {
 286                 $this->mTitle = $t;
 287         }
 288
 289         /** Get the title */
 290         public function getTitle() {
 291                 return $this->mTitle;
 292         }
 293
 294         function outputPage( OutputPage $out ) {
 295                 global $wgDebugComments;
 296                 wfProfileIn( __METHOD__ );
 297
 298                 $this->setMembers();
 299                 $this->initPage( $out );
 300
 301                 // See self::afterContentHook() for documentation
 302                 $afterContent = $this->afterContentHook();
 303
 304                 $out->out( $out->headElement( $this ) );
 305
 306                 $out->out( "\n<body" );
 307                 $ops = $this->getBodyOptions();
 308                 foreach ( $ops as $name => $val ) {
 309                         $out->out( " $name='$val'" );
 310                 }
 311                 $out->out( ">\n" );
 312                 if ( $wgDebugComments ) {
 313                         $out->out( "<!-- Wiki debugging output:\n" .
 314                           $out->mDebugtext . "-->\n" );
 315                 }
 316
 317                 $out->out( $this->beforeContent() );
 318
 319                 $out->out( $out->mBodytext . "\n" );
 320
 321                 $out->out( $this->afterContent() );
 322
 323                 $out->out( $afterContent );
 324
 325                 $out->out( $this->bottomScripts() );
 326
 327                 $out->out( wfReportTime() );
 328
 329                 $out->out( "\n</body></html>" );
 330                 wfProfileOut( __METHOD__ );
 331         }
 332
 333         static function makeVariablesScript( $data ) {
 334                 if( $data ) {
 335                         $r = array();
 336                         foreach ( $data as $name => $value ) {
 337                                 $encValue = Xml::encodeJsVar( $value );
 338                                 $r[] = "$name=$encValue";
 339                         }
 340                         $js = 'var ' . implode( ",\n", $r ) . ';';
 341                         return Html::inlineScript( "\n$js\n" );
 342                 } else {
 343                         return '';
 344                 }
 345         }
 346
 347         /**
 348          * Make a <script> tag containing global variables
 349          * @param $skinName string Name of the skin
 350          * The odd calling convention is for backwards compatibility
 351          * @TODO @FIXME Make this not depend on $wgTitle!
 352          */
 353         static function makeGlobalVariablesScript( $skinName ) {
 354                 if ( is_array( $skinName ) ) {
 355                         # Weird back-compat stuff.
 356                         $skinName = $skinName['skinname'];
 357                 }
 358                 global $wgScript, $wgTitle, $wgStylePath, $wgUser, $wgScriptExtension;
 359                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 360                 global $wgOut, $wgArticle;
 361                 global $wgBreakFrames, $wgRequest, $wgVariantArticlePath, $wgActionPaths;
 362                 global $wgUseAjax, $wgAjaxWatch;
 363                 global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 364                 global $wgRestrictionTypes, $wgLivePreview;
 365                 global $wgMWSuggestTemplate, $wgDBname, $wgEnableMWSuggest;
 366                 global $wgSitename, $wgEnableIframeApiProxy, $wgEnableJS2system;
 367
 368                 $ns = $wgTitle->getNamespace();
 369                 $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $wgTitle->getNsText();
 370                 $separatorTransTable = $wgContLang->separatorTransformTable();
 371                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
 372                 $compactSeparatorTransTable = array(
 373                         implode( "\t", array_keys( $separatorTransTable ) ),
 374                         implode( "\t", $separatorTransTable ),
 375                 );
 376                 $digitTransTable = $wgContLang->digitTransformTable();
 377                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
 378                 $compactDigitTransTable = array(
 379                         implode( "\t", array_keys( $digitTransTable ) ),
 380                         implode( "\t", $digitTransTable ),
 381                 );
 382
 383                 $mainPage = Title::newFromText( wfMsgForContent( 'mainpage' ) );
 384                 $vars = array(
 385                         'skin' => $skinName,
 386                         'stylepath' => $wgStylePath,
 387                         'urlprotocols' => wfUrlProtocols(),
 388                         'wgArticlePath' => $wgArticlePath,
 389                         'wgScriptPath' => $wgScriptPath,
 390                         'wgScriptExtension' => $wgScriptExtension,
 391                         'wgScript' => $wgScript,
 392                         'wgVariantArticlePath' => $wgVariantArticlePath,
 393                         'wgActionPaths' => (object)$wgActionPaths,
 394                         'wgServer' => $wgServer,
 395                         'wgCanonicalNamespace' => $nsname,
 396                         'wgCanonicalSpecialPageName' => $ns == NS_SPECIAL ?
 397                                 SpecialPage::resolveAlias( $wgTitle->getDBkey() ) : false, # bug 21115
 398                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 399                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 400                         'wgTitle' => $wgTitle->getText(),
 401                         'wgAction' => $wgRequest->getText( 'action', 'view' ),
 402                         'wgArticleId' => $wgTitle->getArticleId(),
 403                         'wgIsArticle' => $wgOut->isArticle(),
 404                         'wgUserName' => $wgUser->isAnon() ? NULL : $wgUser->getName(),
 405                         'wgUserGroups' => $wgUser->isAnon() ? NULL : $wgUser->getEffectiveGroups(),
 406                         'wgUserLanguage' => $wgLang->getCode(),
 407                         'wgContentLanguage' => $wgContLang->getCode(),
 408                         'wgBreakFrames' => $wgBreakFrames,
 409                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 410                         'wgVersion' => $wgVersion,
 411                         'wgEnableAPI' => $wgEnableAPI,
 412                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
 413                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
 414                         'wgDigitTransformTable' => $compactDigitTransTable,
 415                         'wgMainPageTitle' => $mainPage ? $mainPage->getPrefixedText() : null,
 416                         'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
 417                         'wgNamespaceIds' => $wgContLang->getNamespaceIds(),
 418                         'wgSiteName' => $wgSitename,
 419                 );
 420                 if ( $wgContLang->hasVariants() ) {
 421                         $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
 422                 }
 423
 424                 //if on upload page output the extension list & js_upload
 425                 if( SpecialPage::resolveAlias( $wgTitle->getDBkey() ) ==  "Upload" ) {
 426                         global $wgFileExtensions, $wgAjaxUploadInterface;
 427                         $vars['wgFileExtensions'] = $wgFileExtensions;
 428                         $vars['wgAjaxUploadInterface'] = $wgAjaxUploadInterface;
 429                 }
 430
 431                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
 432                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 433                         $vars['wgDBname'] = $wgDBname;
 434                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 435                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 436                 }
 437
 438                 foreach( $wgRestrictionTypes as $type )
 439                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 440
 441                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
 442                         $vars['wgLivepreviewMessageLoading'] = wfMsg( 'livepreview-loading' );
 443                         $vars['wgLivepreviewMessageReady']   = wfMsg( 'livepreview-ready' );
 444                         $vars['wgLivepreviewMessageFailed']  = wfMsg( 'livepreview-failed' );
 445                         $vars['wgLivepreviewMessageError']   = wfMsg( 'livepreview-error' );
 446                 }
 447
 448                 //add api proxy var and script link if on the special proxy page:
 449                 if( $wgEnableJS2system &&
 450                         $wgTitle->getNamespace() == NS_MEDIAWIKI &&
 451                         $wgTitle->getDBKey() == 'ApiProxy' )
 452                 {
 453                         $vars['wgEnableIframeApiProxy'] = $wgEnableIframeApiProxy;
 454                         //also add the apiProxy Page script if we are on that page
 455                         if( $wgEnableIframeApiProxy )
 456                                 $wgOut->addScriptClass( 'apiProxyPage' );
 457                 }
 458
 459                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 460                         $msgs = (object)array();
 461                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching' ) as $msgName ) {
 462                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 463                         }
 464                         $vars['wgAjaxWatch'] = $msgs;
 465                 }
 466
 467                 // Allow extensions to add their custom variables to the global JS variables
 468                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 469
 470                 return self::makeVariablesScript( $vars );
 471         }
 472
 473         /**
 474          * To make it harder for someone to slip a user a fake
 475          * user-JavaScript or user-CSS preview, a random token
 476          * is associated with the login session. If it's not
 477          * passed back with the preview request, we won't render
 478          * the code.
 479          *
 480          * @param string $action
 481          * @return bool
 482          */
 483         public function userCanPreview( $action ) {
 484                 global $wgRequest, $wgUser;
 485
 486                 if( $action != 'submit' )
 487                         return false;
 488                 if( !$wgRequest->wasPosted() )
 489                         return false;
 490                 if( !$this->mTitle->userCanEditCssSubpage() )
 491                         return false;
 492                 if( !$this->mTitle->userCanEditJsSubpage() )
 493                         return false;
 494                 return $wgUser->matchEditToken(
 495                         $wgRequest->getVal( 'wpEditToken' ) );
 496         }
 497
 498         /**
 499          * generated JavaScript action=raw&gen=js
 500          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 501          * nated together.  For some bizarre reason, it does *not* return any
 502          * custom user JS from subpages.  Huh?
 503          *
 504          * There's absolutely no reason to have separate Monobook/Common JSes.
 505          * Any JS that cares can just check the skin variable generated at the
 506          * top.  For now Monobook.js will be maintained, but it should be consi-
 507          * dered deprecated.
 508          *
 509          * @param $force_skin string If set, overrides the skin name
 510          *
 511          * @return string
 512          */
 513         public function generateUserJs( $skinName = null ) {
 514                 global $wgStylePath;
 515
 516                 wfProfileIn( __METHOD__ );
 517                 if( !$skinName ) {
 518                         $skinName =     $this->getSkinName();
 519                 }
 520
 521                 $s = "/* generated javascript */\n";
 522                 $s .= "var skin = '" . Xml::escapeJsString($skinName ) . "';\n";
 523                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 524                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 525                 $commonJs = wfMsgForContent( 'common.js' );
 526                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 527                         $s .= $commonJs;
 528                 }
 529
 530                 $s .= "\n\n/* MediaWiki:".ucfirst( $skinName ).".js */\n";
 531                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 532                 // by checking for default message content
 533                 $msgKey = ucfirst( $skinName ) . '.js';
 534                 $userJS = wfMsgForContent( $msgKey );
 535                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 536                         $s .= $userJS;
 537                 }
 538
 539                 wfProfileOut( __METHOD__ );
 540                 return $s;
 541         }
 542
 543         /**
 544          * Generate user stylesheet for action=raw&gen=css
 545          */
 546         public function generateUserStylesheet() {
 547                 wfProfileIn( __METHOD__ );
 548                 $s = "/* generated user stylesheet */\n" .
 549                         $this->reallyGenerateUserStylesheet();
 550                 wfProfileOut( __METHOD__ );
 551                 return $s;
 552         }
 553
 554         /**
 555          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 556          */
 557         protected function reallyGenerateUserStylesheet(){
 558                 global $wgUser;
 559                 $s = '';
 560                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 561                         $underline = $undopt ? 'underline' : 'none';
 562                         $s .= "a { text-decoration: $underline; }\n";
 563                 }
 564                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 565                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 566                 } else {
 567                         $s .= <<<END
 568 a.new, #quickbar a.new,
 569 a.stub, #quickbar a.stub {
 570         color: inherit;
 571 }
 572 a.new:after, #quickbar a.new:after {
 573         content: "?";
 574         color: #CC2200;
 575 }
 576 a.stub:after, #quickbar a.stub:after {
 577         content: "!";
 578         color: #772233;
 579 }
 580 END;
 581                 }
 582                 if( $wgUser->getOption( 'justify' ) ) {
 583                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 584                 }
 585                 if( !$wgUser->getOption( 'showtoc' ) ) {
 586                         $s .= "#toc { display: none; }\n";
 587                 }
 588                 if( !$wgUser->getOption( 'editsection' ) ) {
 589                         $s .= ".editsection { display: none; }\n";
 590                 }
 591                 $fontstyle = $wgUser->getOption( 'editfont' );
 592                 if ( $fontstyle !== 'default' ) {
 593                         $s .= "textarea { font-family: $fontstyle; }\n";
 594                 }
 595                 return $s;
 596         }
 597
 598         /**
 599          * @private
 600          */
 601         function setupUserCss( OutputPage $out ) {
 602                 global $wgRequest, $wgContLang, $wgUser;
 603                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 604
 605                 wfProfileIn( __METHOD__ );
 606
 607                 $this->setupSkinUserCss( $out );
 608
 609                 $siteargs = array(
 610                         'action' => 'raw',
 611                         'maxage' => $wgSquidMaxage,
 612                 );
 613
 614                 // Add any extension CSS
 615                 foreach ( $out->getExtStyle() as $url ) {
 616                         $out->addStyle( $url );
 617                 }
 618
 619                 // If we use the site's dynamic CSS, throw that in, too
 620                 // Per-site custom styles
 621                 if( $wgUseSiteCss ) {
 622                         global $wgHandheldStyle;
 623                         $query = wfArrayToCGI( array(
 624                                 'usemsgcache' => 'yes',
 625                                 'ctype' => 'text/css',
 626                                 'smaxage' => $wgSquidMaxage
 627                         ) + $siteargs );
 628                         # Site settings must override extension css! (bug 15025)
 629                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 630                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 631                         if( $wgHandheldStyle ) {
 632                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 633                         }
 634                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 635                 }
 636
 637                 if( $wgUser->isLoggedIn() ) {
 638                         // Ensure that logged-in users' generated CSS isn't clobbered
 639                         // by anons' publicly cacheable generated CSS.
 640                         $siteargs['smaxage'] = '0';
 641                         $siteargs['ts'] = $wgUser->mTouched;
 642                 }
 643                 // Per-user styles based on preferences
 644                 $siteargs['gen'] = 'css';
 645                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 646                         $siteargs['useskin'] = $us;
 647                 }
 648                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 649
 650                 // Per-user custom style pages
 651                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 652                         $action = $wgRequest->getVal( 'action' );
 653                         # If we're previewing the CSS page, use it
 654                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 655                                 // @FIXME: properly escape the cdata!
 656                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 657                         } else {
 658                                 $out->addStyle( self::makeUrl( $this->userpage . '/' . $this->getSkinName() .'.css',
 659                                         'action=raw&ctype=text/css' ) );
 660                         }
 661                 }
 662
 663                 wfProfileOut( __METHOD__ );
 664         }
 665
 666         /**
 667          * Add skin specific stylesheets
 668          * @param $out OutputPage
 669          */
 670         function setupSkinUserCss( OutputPage $out ) {
 671                 $out->addStyle( 'common/shared.css' );
 672                 $out->addStyle( 'common/oldshared.css' );
 673                 $out->addStyle( $this->getStylesheet() );
 674                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 675         }
 676
 677         function getBodyOptions() {
 678                 global $wgUser, $wgOut, $wgRequest, $wgContLang;
 679
 680                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 681
 682                 if ( 0 != $this->mTitle->getNamespace() ) {
 683                         $a = array( 'bgcolor' => '#ffffec' );
 684                 }
 685                 else $a = array( 'bgcolor' => '#FFFFFF' );
 686                 if( $wgOut->isArticle() && $wgUser->getOption( 'editondblclick' ) &&
 687                   $this->mTitle->quickUserCan( 'edit' ) ) {
 688                         $s = $this->mTitle->getFullURL( $this->editUrlOptions() );
 689                         $s = 'document.location = "' .Xml::escapeJsString( $s ) .'";';
 690                         $a += array( 'ondblclick' => $s );
 691                 }
 692                 $a['onload'] = $wgOut->getOnloadHandler();
 693                 $a['class'] =
 694                         'mediawiki' .
 695                         ' '.( $wgContLang->getDir() ).
 696                         ' '.$this->getPageClasses( $this->mTitle ) .
 697                         ' skin-'. Sanitizer::escapeClass( $this->getSkinName() );
 698                 return $a;
 699         }
 700
 701         function getPageClasses( $title ) {
 702                 $numeric = 'ns-'.$title->getNamespace();
 703                 if( $title->getNamespace() == NS_SPECIAL ) {
 704                         $type = 'ns-special';
 705                 } elseif( $title->isTalkPage() ) {
 706                         $type = 'ns-talk';
 707                 } else {
 708                         $type = 'ns-subject';
 709                 }
 710                 $name = Sanitizer::escapeClass( 'page-'.$title->getPrefixedText() );
 711                 return "$numeric $type $name";
 712         }
 713
 714         /**
 715          * URL to the logo
 716          */
 717         function getLogo() {
 718                 global $wgLogo;
 719                 return $wgLogo;
 720         }
 721
 722         /**
 723          * This will be called immediately after the <body> tag.  Split into
 724          * two functions to make it easier to subclass.
 725          */
 726         function beforeContent() {
 727                 return $this->doBeforeContent();
 728         }
 729
 730         function doBeforeContent() {
 731                 global $wgContLang;
 732                 wfProfileIn( __METHOD__ );
 733
 734                 $s = '';
 735                 $qb = $this->qbSetting();
 736
 737                 if( $langlinks = $this->otherLanguages() ) {
 738                         $rows = 2;
 739                         $borderhack = '';
 740                 } else {
 741                         $rows = 1;
 742                         $langlinks = false;
 743                         $borderhack = 'class="top"';
 744                 }
 745
 746                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 747                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 748
 749                 $shove = ( $qb != 0 );
 750                 $left = ( $qb == 1 || $qb == 3 );
 751                 if( $wgContLang->isRTL() ) $left = !$left;
 752
 753                 if( !$shove ) {
 754                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 755                           $this->logoText() . '</td>';
 756                 } elseif( $left ) {
 757                         $s .= $this->getQuickbarCompensator( $rows );
 758                 }
 759                 $l = $wgContLang->alignStart();
 760                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 761
 762                 $s .= $this->topLinks();
 763                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 764
 765                 $r = $wgContLang->alignEnd();
 766                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 767                 $s .= $this->nameAndLogin();
 768                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 769
 770                 if ( $langlinks ) {
 771                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 772                 }
 773
 774                 if ( $shove && !$left ) { # Right
 775                         $s .= $this->getQuickbarCompensator( $rows );
 776                 }
 777                 $s .= "</tr>\n</table>\n</div>\n";
 778                 $s .= "\n<div id='article'>\n";
 779
 780                 $notice = wfGetSiteNotice();
 781                 if( $notice ) {
 782                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 783                 }
 784                 $s .= $this->pageTitle();
 785                 $s .= $this->pageSubtitle();
 786                 $s .= $this->getCategories();
 787                 wfProfileOut( __METHOD__ );
 788                 return $s;
 789         }
 790
 791
 792         function getCategoryLinks() {
 793                 global $wgOut, $wgUseCategoryBrowser;
 794                 global $wgContLang, $wgUser;
 795
 796                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 797
 798                 # Separator
 799                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 800
 801                 // Use Unicode bidi embedding override characters,
 802                 // to make sure links don't smash each other up in ugly ways.
 803                 $dir = $wgContLang->getDir();
 804                 $embed = "<span dir='$dir'>";
 805                 $pop = '</span>';
 806
 807                 $allCats = $wgOut->getCategoryLinks();
 808                 $s = '';
 809                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 810                 if ( !empty( $allCats['normal'] ) ) {
 811                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 812
 813                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 814                         $s .= '<div id="mw-normal-catlinks">' .
 815                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 816                                 . $colon . $t . '</div>';
 817                 }
 818
 819                 # Hidden categories
 820                 if ( isset( $allCats['hidden'] ) ) {
 821                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 822                                 $class ='mw-hidden-cats-user-shown';
 823                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 824                                 $class = 'mw-hidden-cats-ns-shown';
 825                         } else {
 826                                 $class = 'mw-hidden-cats-hidden';
 827                         }
 828                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 829                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 830                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 831                                 "</div>";
 832                 }
 833
 834                 # optional 'dmoz-like' category browser. Will be shown under the list
 835                 # of categories an article belong to
 836                 if( $wgUseCategoryBrowser ){
 837                         $s .= '<br /><hr />';
 838
 839                         # get a big array of the parents tree
 840                         $parenttree = $this->mTitle->getParentCategoryTree();
 841                         # Skin object passed by reference cause it can not be
 842                         # accessed under the method subfunction drawCategoryBrowser
 843                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 844                         # Clean out bogus first entry and sort them
 845                         unset( $tempout[0] );
 846                         asort( $tempout );
 847                         # Output one per line
 848                         $s .= implode( "<br />\n", $tempout );
 849                 }
 850
 851                 return $s;
 852         }
 853
 854         /**
 855          * Render the array as a serie of links.
 856          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 857          * @param &skin Object: skin passed by reference
 858          * @return String separated by &gt;, terminate with "\n"
 859          */
 860         function drawCategoryBrowser( $tree, &$skin ){
 861                 $return = '';
 862                 foreach( $tree as $element => $parent ) {
 863                         if( empty( $parent ) ) {
 864                                 # element start a new list
 865                                 $return .= "\n";
 866                         } else {
 867                                 # grab the others elements
 868                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 869                         }
 870                         # add our current element to the list
 871                         $eltitle = Title::newFromText( $element );
 872                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 873                 }
 874                 return $return;
 875         }
 876
 877         function getCategories() {
 878                 $catlinks = $this->getCategoryLinks();
 879
 880                 $classes = 'catlinks';
 881
 882                 // Check what we're showing
 883                 global $wgOut, $wgUser;
 884                 $allCats = $wgOut->getCategoryLinks();
 885                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 886                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 887
 888                 if( empty($allCats['normal']) && !( !empty($allCats['hidden']) && $showHidden ) ) {
 889                         $classes .= ' catlinks-allhidden';
 890                 }
 891
 892                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 893         }
 894
 895         function getQuickbarCompensator( $rows = 1 ) {
 896                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 897         }
 898
 899         /**
 900          * This runs a hook to allow extensions placing their stuff after content
 901          * and article metadata (e.g. categories).
 902          * Note: This function has nothing to do with afterContent().
 903          *
 904          * This hook is placed here in order to allow using the same hook for all
 905          * skins, both the SkinTemplate based ones and the older ones, which directly
 906          * use this class to get their data.
 907          *
 908          * The output of this function gets processed in SkinTemplate::outputPage() for
 909          * the SkinTemplate based skins, all other skins should directly echo it.
 910          *
 911          * Returns an empty string by default, if not changed by any hook function.
 912          */
 913         protected function afterContentHook() {
 914                 $data = '';
 915
 916                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ){
 917                         // adding just some spaces shouldn't toggle the output
 918                         // of the whole <div/>, so we use trim() here
 919                         if( trim( $data ) != '' ){
 920                                 // Doing this here instead of in the skins to
 921                                 // ensure that the div has the same ID in all
 922                                 // skins
 923                                 $data = "<div id='mw-data-after-content'>\n" .
 924                                         "\t$data\n" .
 925                                         "</div>\n";
 926                         }
 927                 } else {
 928                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 929                 }
 930
 931                 return $data;
 932         }
 933
 934         /**
 935          * Generate debug data HTML for displaying at the bottom of the main content
 936          * area.
 937          * @return String HTML containing debug data, if enabled (otherwise empty).
 938          */
 939         protected function generateDebugHTML() {
 940                 global $wgShowDebug, $wgOut;
 941                 if ( $wgShowDebug ) {
 942                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 943                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 944                                 $listInternals . "</ul>\n";
 945                 }
 946                 return '';
 947         }
 948
 949         private function formatDebugHTML( $debugText ) {
 950                 $lines = explode( "\n", $debugText );
 951                 $curIdent = 0;
 952                 $ret = '<li>';
 953                 foreach( $lines as $line ) {
 954                         $m = array();
 955                         $display = ltrim( $line );
 956                         $ident = strlen( $line ) - strlen( $display );
 957                         $diff = $ident - $curIdent;
 958
 959                         if ( $display == '' )
 960                                 $display = "\xc2\xa0";
 961
 962                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 963                                 $ident = $curIdent;
 964                                 $diff = 0;
 965                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 966                         } else {
 967                                 $display = htmlspecialchars( $display );
 968                         }
 969
 970                         if ( $diff < 0 )
 971                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 972                         elseif ( $diff == 0 )
 973                                 $ret .= "</li><li>\n";
 974                         else
 975                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 976                         $ret .= $display . "\n";
 977
 978                         $curIdent = $ident;
 979                 }
 980                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 981                 return $ret;
 982         }
 983
 984         /**
 985          * This gets called shortly before the </body> tag.
 986          * @return String HTML to be put before </body>
 987          */
 988         function afterContent() {
 989                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 990                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 991         }
 992
 993         /**
 994          * This gets called shortly before the </body> tag.
 995          * @return String HTML-wrapped JS code to be put before </body>
 996          */
 997         function bottomScripts() {
 998                 $bottomScriptText = "\n" . Html::inlineScript( 'if (window.runOnloadHook) runOnloadHook();' ) . "\n";
 999                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
1000                 return $bottomScriptText;
1001         }
1002
1003         /** @return string Retrievied from HTML text */
1004         function printSource() {
1005                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
1006                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
1007         }
1008
1009         function printFooter() {
1010                 return "<p>" .  $this->printSource() .
1011                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1012         }
1013
1014         /** overloaded by derived classes */
1015         function doAfterContent() { return '</div></div>'; }
1016
1017         function pageTitleLinks() {
1018                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1019
1020                 $oldid = $wgRequest->getVal( 'oldid' );
1021                 $diff = $wgRequest->getVal( 'diff' );
1022                 $action = $wgRequest->getText( 'action' );
1023
1024                 $s[] = $this->printableLink();
1025                 $disclaimer = $this->disclaimerLink(); # may be empty
1026                 if( $disclaimer ) {
1027                         $s[] = $disclaimer;
1028                 }
1029                 $privacy = $this->privacyLink(); # may be empty too
1030                 if( $privacy ) {
1031                         $s[] = $privacy;
1032                 }
1033
1034                 if ( $wgOut->isArticleRelated() ) {
1035                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1036                                 $name = $this->mTitle->getDBkey();
1037                                 $image = wfFindFile( $this->mTitle );
1038                                 if( $image ) {
1039                                         $link = htmlspecialchars( $image->getURL() );
1040                                         $style = $this->getInternalLinkAttributes( $link, $name );
1041                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1042                                 }
1043                         }
1044                 }
1045                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1046                         $s[] .= $this->link(
1047                                         $this->mTitle,
1048                                         wfMsg( 'currentrev' ),
1049                                         array(),
1050                                         array(),
1051                                         array( 'known', 'noclasses' )
1052                         );
1053                 }
1054
1055                 if ( $wgUser->getNewtalk() ) {
1056                         # do not show "You have new messages" text when we are viewing our
1057                         # own talk page
1058                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1059                                 $tl = $this->link(
1060                                         $wgUser->getTalkPage(),
1061                                         wfMsgHtml( 'newmessageslink' ),
1062                                         array(),
1063                                         array( 'redirect' => 'no' ),
1064                                         array( 'known', 'noclasses' )
1065                                 );
1066
1067                                 $dl = $this->link(
1068                                         $wgUser->getTalkPage(),
1069                                         wfMsgHtml( 'newmessagesdifflink' ),
1070                                         array(),
1071                                         array( 'diff' => 'cur' ),
1072                                         array( 'known', 'noclasses' )
1073                                 );
1074                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1075                                 # disable caching
1076                                 $wgOut->setSquidMaxage( 0 );
1077                                 $wgOut->enableClientCache( false );
1078                         }
1079                 }
1080
1081                 $undelete = $this->getUndeleteLink();
1082                 if( !empty( $undelete ) ) {
1083                         $s[] = $undelete;
1084                 }
1085                 return $wgLang->pipeList( $s );
1086         }
1087
1088         function getUndeleteLink() {
1089                 global $wgUser, $wgContLang, $wgLang, $wgRequest;
1090
1091                 $action = $wgRequest->getVal( 'action', 'view' );
1092
1093                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1094                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1095                         $n = $this->mTitle->isDeleted();
1096                         if ( $n ) {
1097                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1098                                         $msg = 'thisisdeleted';
1099                                 } else {
1100                                         $msg = 'viewdeleted';
1101                                 }
1102                                 return wfMsg(
1103                                         $msg,
1104                                         $this->link(
1105                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1106                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1107                                                 array(),
1108                                                 array(),
1109                                                 array( 'known', 'noclasses' )
1110                                         )
1111                                 );
1112                         }
1113                 }
1114                 return '';
1115         }
1116
1117         function printableLink() {
1118                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1119
1120                 $s = array();
1121
1122                 if ( !$wgOut->isPrintable() ) {
1123                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1124                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1125                 }
1126
1127                 if( $wgOut->isSyndicated() ) {
1128                         foreach( $wgFeedClasses as $format => $class ) {
1129                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1130                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1131                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1132                         }
1133                 }
1134                 return $wgLang->pipeList( $s );
1135         }
1136
1137         function pageTitle() {
1138                 global $wgOut;
1139                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1140                 return $s;
1141         }
1142
1143         function pageSubtitle() {
1144                 global $wgOut;
1145
1146                 $sub = $wgOut->getSubtitle();
1147                 if ( '' == $sub ) {
1148                         global $wgExtraSubtitle;
1149                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1150                 }
1151                 $subpages = $this->subPageSubtitle();
1152                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1153                 $s = "<p class='subtitle'>{$sub}</p>\n";
1154                 return $s;
1155         }
1156
1157         function subPageSubtitle() {
1158                 $subpages = '';
1159                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) )
1160                         return $subpages;
1161
1162                 global $wgOut;
1163                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1164                         $ptext = $this->mTitle->getPrefixedText();
1165                         if( preg_match( '/\//', $ptext ) ) {
1166                                 $links = explode( '/', $ptext );
1167                                 array_pop( $links );
1168                                 $c = 0;
1169                                 $growinglink = '';
1170                                 $display = '';
1171                                 foreach( $links as $link ) {
1172                                         $growinglink .= $link;
1173                                         $display .= $link;
1174                                         $linkObj = Title::newFromText( $growinglink );
1175                                         if( is_object( $linkObj ) && $linkObj->exists() ){
1176                                                 $getlink = $this->link(
1177                                                         $linkObj,
1178                                                         htmlspecialchars( $display ),
1179                                                         array(),
1180                                                         array(),
1181                                                         array( 'known', 'noclasses' )
1182                                                 );
1183                                                 $c++;
1184                                                 if( $c > 1 ) {
1185                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1186                                                 } else  {
1187                                                         $subpages .= '&lt; ';
1188                                                 }
1189                                                 $subpages .= $getlink;
1190                                                 $display = '';
1191                                         } else {
1192                                                 $display .= '/';
1193                                         }
1194                                         $growinglink .= '/';
1195                                 }
1196                         }
1197                 }
1198                 return $subpages;
1199         }
1200
1201         /**
1202          * Returns true if the IP should be shown in the header
1203          */
1204         function showIPinHeader() {
1205                 global $wgShowIPinHeader;
1206                 return $wgShowIPinHeader && session_id() != '';
1207         }
1208
1209         function nameAndLogin() {
1210                 global $wgUser, $wgLang, $wgContLang;
1211
1212                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1213
1214                 $ret = '';
1215                 if ( $wgUser->isAnon() ) {
1216                         if( $this->showIPinHeader() ) {
1217                                 $name = wfGetIP();
1218
1219                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1220                                         $wgLang->getNsText( NS_TALK ) );
1221
1222                                 $ret .= "$name ($talkLink)";
1223                         } else {
1224                                 $ret .= wfMsg( 'notloggedin' );
1225                         }
1226
1227                         $returnTo = $this->mTitle->getPrefixedDBkey();
1228                         $query = array();
1229                         if ( $logoutPage != $returnTo ) {
1230                                 $query['returnto'] = $returnTo;
1231                         }
1232
1233                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1234                                 ? 'nav-login-createaccount'
1235                                 : 'login';
1236                         $ret .= "\n<br />" . $this->link(
1237                                 SpecialPage::getTitleFor( 'Userlogin' ),
1238                                 wfMsg( $loginlink ), array(), $query
1239                         );
1240                 } else {
1241                         $returnTo = $this->mTitle->getPrefixedDBkey();
1242                         $talkLink = $this->link( $wgUser->getTalkPage(),
1243                                 $wgLang->getNsText( NS_TALK ) );
1244
1245                         $ret .= $this->link( $wgUser->getUserPage(),
1246                                 htmlspecialchars( $wgUser->getName() ) );
1247                         $ret .= " ($talkLink)<br />";
1248                         $ret .= $wgLang->pipeList( array(
1249                                 $this->link(
1250                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1251                                         array(), array( 'returnto' => $returnTo )
1252                                 ),
1253                                 $this->specialLink( 'preferences' ),
1254                         ) );
1255                 }
1256                 $ret = $wgLang->pipeList( array(
1257                         $ret,
1258                         $this->link(
1259                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1260                                 wfMsg( 'help' )
1261                         ),
1262                 ) );
1263
1264                 return $ret;
1265         }
1266
1267         function getSearchLink() {
1268                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1269                 return $searchPage->getLocalURL();
1270         }
1271
1272         function escapeSearchLink() {
1273                 return htmlspecialchars( $this->getSearchLink() );
1274         }
1275
1276         function searchForm() {
1277                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1278                 $search = $wgRequest->getText( 'search' );
1279
1280                 $s = '<form id="searchform'.$this->searchboxes.'" name="search" class="inline" method="post" action="'
1281                   . $this->escapeSearchLink() . "\">\n"
1282                   . '<input type="text" id="searchInput'.$this->searchboxes.'" name="search" size="19" value="'
1283                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1284                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1285
1286                 if( $wgUseTwoButtonsSearchForm )
1287                         $s .= '&nbsp;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1288                 else
1289                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1290
1291                 $s .= '</form>';
1292
1293                 // Ensure unique id's for search boxes made after the first
1294                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1295
1296                 return $s;
1297         }
1298
1299         function topLinks() {
1300                 global $wgOut;
1301
1302                 $s = array(
1303                         $this->mainPageLink(),
1304                         $this->specialLink( 'recentchanges' )
1305                 );
1306
1307                 if ( $wgOut->isArticleRelated() ) {
1308                         $s[] = $this->editThisPage();
1309                         $s[] = $this->historyLink();
1310                 }
1311                 # Many people don't like this dropdown box
1312                 #$s[] = $this->specialPagesList();
1313
1314                 if( $this->variantLinks() ) {
1315                         $s[] = $this->variantLinks();
1316                 }
1317
1318                 if( $this->extensionTabLinks() ) {
1319                         $s[] = $this->extensionTabLinks();
1320                 }
1321
1322                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1323                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1324         }
1325
1326         /**
1327          * Compatibility for extensions adding functionality through tabs.
1328          * Eventually these old skins should be replaced with SkinTemplate-based
1329          * versions, sigh...
1330          * @return string
1331          */
1332         function extensionTabLinks() {
1333                 $tabs = array();
1334                 $out = '';
1335                 $s = array();
1336                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1337                 foreach( $tabs as $tab ) {
1338                         $s[] = Xml::element( 'a',
1339                                 array( 'href' => $tab['href'] ),
1340                                 $tab['text'] );
1341                 }
1342
1343                 if( count( $s ) ) {
1344                         global $wgLang;
1345
1346                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1347                         $out .= $wgLang->pipeList( $s );
1348                 }
1349
1350                 return $out;
1351         }
1352
1353         /**
1354          * Language/charset variant links for classic-style skins
1355          * @return string
1356          */
1357         function variantLinks() {
1358                 $s = '';
1359                 /* show links to different language variants */
1360                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1361                 $variants = $wgContLang->getVariants();
1362                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1363                         foreach( $variants as $code ) {
1364                                 $varname = $wgContLang->getVariantname( $code );
1365                                 if( $varname == 'disable' )
1366                                         continue;
1367                                 $s = $wgLang->pipeList( array(
1368                                         $s,
1369                                         '<a href="' . $this->mTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1370                                 ) );
1371                         }
1372                 }
1373                 return $s;
1374         }
1375
1376         function bottomLinks() {
1377                 global $wgOut, $wgUser, $wgUseTrackbacks;
1378                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1379
1380                 $s = '';
1381                 if ( $wgOut->isArticleRelated() ) {
1382                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1383                         if ( $wgUser->isLoggedIn() ) {
1384                                 $element[] = $this->watchThisPage();
1385                         }
1386                         $element[] = $this->talkLink();
1387                         $element[] = $this->historyLink();
1388                         $element[] = $this->whatLinksHere();
1389                         $element[] = $this->watchPageLinksLink();
1390
1391                         if( $wgUseTrackbacks )
1392                                 $element[] = $this->trackbackLink();
1393
1394                         if ( $this->mTitle->getNamespace() == NS_USER
1395                             || $this->mTitle->getNamespace() == NS_USER_TALK ){
1396                                 $id = User::idFromName( $this->mTitle->getText() );
1397                                 $ip = User::isIP( $this->mTitle->getText() );
1398
1399                                 if( $id || $ip ) { # both anons and non-anons have contri list
1400                                         $element[] = $this->userContribsLink();
1401                                 }
1402                                 if( $this->showEmailUser( $id ) ) {
1403                                         $element[] = $this->emailUserLink();
1404                                 }
1405                         }
1406
1407                         $s = implode( $element, $sep );
1408
1409                         if ( $this->mTitle->getArticleId() ) {
1410                                 $s .= "\n<br />";
1411                                 if( $wgUser->isAllowed( 'delete' ) ) { $s .= $this->deleteThisPage(); }
1412                                 if( $wgUser->isAllowed( 'protect' ) ) { $s .= $sep . $this->protectThisPage(); }
1413                                 if( $wgUser->isAllowed( 'move' ) ) { $s .= $sep . $this->moveThisPage(); }
1414                         }
1415                         $s .= "<br />\n" . $this->otherLanguages();
1416                 }
1417
1418                 return $s;
1419         }
1420
1421         function pageStats() {
1422                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1423                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1424
1425                 $oldid = $wgRequest->getVal( 'oldid' );
1426                 $diff = $wgRequest->getVal( 'diff' );
1427                 if ( ! $wgOut->isArticle() ) { return ''; }
1428                 if( !$wgArticle instanceOf Article ) { return ''; }
1429                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1430                 if ( 0 == $wgArticle->getID() ) { return ''; }
1431
1432                 $s = '';
1433                 if ( !$wgDisableCounters ) {
1434                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1435                         if ( $count ) {
1436                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1437                         }
1438                 }
1439
1440                 if( $wgMaxCredits != 0 ){
1441                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1442                 } else {
1443                         $s .= $this->lastModified();
1444                 }
1445
1446                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1447                         $dbr = wfGetDB( DB_SLAVE );
1448                         $res = $dbr->select( 'watchlist',
1449                                 array( 'COUNT(*) AS n' ),
1450                                 array( 'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ), 'wl_namespace' => $this->mTitle->getNamespace() ),
1451                                 __METHOD__
1452                         );
1453                         $x = $dbr->fetchObject( $res );
1454
1455                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1456                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1457                         );
1458                 }
1459
1460                 return $s . ' ' .  $this->getCopyright();
1461         }
1462
1463         function getCopyright( $type = 'detect' ) {
1464                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1465
1466                 if ( $type == 'detect' ) {
1467                         $diff = $wgRequest->getVal( 'diff' );
1468                         $isCur = $wgArticle && $wgArticle->isCurrent();
1469                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1470                                 $type = 'history';
1471                         } else {
1472                                 $type = 'normal';
1473                         }
1474                 }
1475
1476                 if ( $type == 'history' ) {
1477                         $msg = 'history_copyright';
1478                 } else {
1479                         $msg = 'copyright';
1480                 }
1481
1482                 $out = '';
1483                 if( $wgRightsPage ) {
1484                         $title = Title::newFromText( $wgRightsPage );
1485                         $link = $this->linkKnown( $title, $wgRightsText );
1486                 } elseif( $wgRightsUrl ) {
1487                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1488                 } elseif( $wgRightsText ) {
1489                         $link = $wgRightsText;
1490                 } else {
1491                         # Give up now
1492                         return $out;
1493                 }
1494                 // Allow for site and per-namespace customization of copyright notice.
1495                 if( isset($wgArticle) )
1496                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link ) );
1497
1498                 $out .= wfMsgForContent( $msg, $link );
1499                 return $out;
1500         }
1501
1502         function getCopyrightIcon() {
1503                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1504                 $out = '';
1505                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1506                         $out = $wgCopyrightIcon;
1507                 } else if ( $wgRightsIcon ) {
1508                         $icon = htmlspecialchars( $wgRightsIcon );
1509                         if ( $wgRightsUrl ) {
1510                                 $url = htmlspecialchars( $wgRightsUrl );
1511                                 $out .= '<a href="'.$url.'">';
1512                         }
1513                         $text = htmlspecialchars( $wgRightsText );
1514                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1515                         if ( $wgRightsUrl ) {
1516                                 $out .= '</a>';
1517                         }
1518                 }
1519                 return $out;
1520         }
1521
1522         function getPoweredBy() {
1523                 global $wgStylePath;
1524                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1525                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1526                 return $img;
1527         }
1528
1529         function lastModified() {
1530                 global $wgLang, $wgArticle;
1531                 if( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest()) {
1532                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1533                 } else {
1534                         $timestamp = $wgArticle->getTimestamp();
1535                 }
1536                 if ( $timestamp ) {
1537                         $d = $wgLang->date( $timestamp, true );
1538                         $t = $wgLang->time( $timestamp, true );
1539                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1540                 } else {
1541                         $s = '';
1542                 }
1543                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1544                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1545                 }
1546                 return $s;
1547         }
1548
1549         function logoText( $align = '' ) {
1550                 if ( '' != $align ) {
1551                         $a = " align='{$align}'";
1552                 } else {
1553                         $a = '';
1554                 }
1555
1556                 $mp = wfMsg( 'mainpage' );
1557                 $mptitle = Title::newMainPage();
1558                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1559
1560                 $logourl = $this->getLogo();
1561                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1562                 return $s;
1563         }
1564
1565         /**
1566          * show a drop-down box of special pages
1567          */
1568         function specialPagesList() {
1569                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1570                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1571                 foreach ( $pages as $name => $page ) {
1572                         $pages[$name] = $page->getDescription();
1573                 }
1574
1575                 $go = wfMsg( 'go' );
1576                 $sp = wfMsg( 'specialpages' );
1577                 $spp = $wgContLang->specialPage( 'Specialpages' );
1578
1579                 $s = '<form id="specialpages" method="get" ' .
1580                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1581                 $s .= "<select name=\"wpDropdown\">\n";
1582                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1583
1584
1585                 foreach ( $pages as $name => $desc ) {
1586                         $p = $wgContLang->specialPage( $name );
1587                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1588                 }
1589                 $s .= "</select>\n";
1590                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1591                 $s .= "</form>\n";
1592                 return $s;
1593         }
1594
1595         function mainPageLink() {
1596                 $s = $this->link(
1597                         Title::newMainPage(),
1598                         wfMsg( 'mainpage' ),
1599                         array(),
1600                         array(),
1601                         array( 'known', 'noclasses' )
1602                 );
1603                 return $s;
1604         }
1605
1606         private function footerLink ( $desc, $page ) {
1607                 // if the link description has been set to "-" in the default language,
1608                 if ( wfMsgForContent( $desc )  == '-') {
1609                         // then it is disabled, for all languages.
1610                         return '';
1611                 } else {
1612                         // Otherwise, we display the link for the user, described in their
1613                         // language (which may or may not be the same as the default language),
1614                         // but we make the link target be the one site-wide page.
1615                         $title = Title::newFromText( wfMsgForContent( $page ) );
1616                         return $this->linkKnown(
1617                                 $title,
1618                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1619                         );
1620                 }
1621         }
1622
1623         function privacyLink() {
1624                 return $this->footerLink( 'privacy', 'privacypage' );
1625         }
1626
1627         function aboutLink() {
1628                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1629         }
1630
1631         function disclaimerLink() {
1632                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1633         }
1634
1635         function editThisPage() {
1636                 global $wgOut;
1637
1638                 if ( !$wgOut->isArticleRelated() ) {
1639                         $s = wfMsg( 'protectedpage' );
1640                 } else {
1641                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1642                                 $t = wfMsg( 'editthispage' );
1643                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1644                                 $t = wfMsg( 'create-this-page' );
1645                         } else {
1646                                 $t = wfMsg( 'viewsource' );
1647                         }
1648
1649                         $s = $this->link(
1650                                 $this->mTitle,
1651                                 $t,
1652                                 array(),
1653                                 $this->editUrlOptions(),
1654                                 array( 'known', 'noclasses' )
1655                         );
1656                 }
1657                 return $s;
1658         }
1659
1660         /**
1661          * Return URL options for the 'edit page' link.
1662          * This may include an 'oldid' specifier, if the current page view is such.
1663          *
1664          * @return array
1665          * @private
1666          */
1667         function editUrlOptions() {
1668                 global $wgArticle;
1669
1670                 $options = array( 'action' => 'edit' );
1671
1672                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1673                         $options['oldid'] = intval( $this->mRevisionId );
1674                 }
1675
1676                 return $options;
1677         }
1678
1679         function deleteThisPage() {
1680                 global $wgUser, $wgRequest;
1681
1682                 $diff = $wgRequest->getVal( 'diff' );
1683                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1684                         $t = wfMsg( 'deletethispage' );
1685
1686                         $s = $this->link(
1687                                 $this->mTitle,
1688                                 $t,
1689                                 array(),
1690                                 array( 'action' => 'delete' ),
1691                                 array( 'known', 'noclasses' )
1692                         );
1693                 } else {
1694                         $s = '';
1695                 }
1696                 return $s;
1697         }
1698
1699         function protectThisPage() {
1700                 global $wgUser, $wgRequest;
1701
1702                 $diff = $wgRequest->getVal( 'diff' );
1703                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1704                         if ( $this->mTitle->isProtected() ) {
1705                                 $text = wfMsg( 'unprotectthispage' );
1706                                 $query = array( 'action' => 'unprotect' );
1707                         } else {
1708                                 $text = wfMsg( 'protectthispage' );
1709                                 $query = array( 'action' => 'protect' );
1710                         }
1711
1712                         $s = $this->link(
1713                                 $this->mTitle,
1714                                 $text,
1715                                 array(),
1716                                 $query,
1717                                 array( 'known', 'noclasses' )
1718                         );
1719                 } else {
1720                         $s = '';
1721                 }
1722                 return $s;
1723         }
1724
1725         function watchThisPage() {
1726                 global $wgOut;
1727                 ++$this->mWatchLinkNum;
1728
1729                 if ( $wgOut->isArticleRelated() ) {
1730                         if ( $this->mTitle->userIsWatching() ) {
1731                                 $text = wfMsg( 'unwatchthispage' );
1732                                 $query = array( 'action' => 'unwatch' );
1733                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1734                         } else {
1735                                 $text = wfMsg( 'watchthispage' );
1736                                 $query = array( 'action' => 'watch' );
1737                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1738                         }
1739
1740                         $s = $this->link(
1741                                 $this->mTitle,
1742                                 $text,
1743                                 array( 'id' => $id ),
1744                                 $query,
1745                                 array( 'known', 'noclasses' )
1746                         );
1747                 } else {
1748                         $s = wfMsg( 'notanarticle' );
1749                 }
1750                 return $s;
1751         }
1752
1753         function moveThisPage() {
1754                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1755                         return $this->link(
1756                                 SpecialPage::getTitleFor( 'Movepage' ),
1757                                 wfMsg( 'movethispage' ),
1758                                 array(),
1759                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1760                                 array( 'known', 'noclasses' )
1761                         );
1762                 } else {
1763                         // no message if page is protected - would be redundant
1764                         return '';
1765                 }
1766         }
1767
1768         function historyLink() {
1769                 return $this->link(
1770                         $this->mTitle,
1771                         wfMsgHtml( 'history' ),
1772                         array( 'rel' => 'archives' ),
1773                         array( 'action' => 'history' )
1774                 );
1775         }
1776
1777         function whatLinksHere() {
1778                 return $this->link(
1779                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1780                         wfMsgHtml( 'whatlinkshere' ),
1781                         array(),
1782                         array(),
1783                         array( 'known', 'noclasses' )
1784                 );
1785         }
1786
1787         function userContribsLink() {
1788                 return $this->link(
1789                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1790                         wfMsgHtml( 'contributions' ),
1791                         array(),
1792                         array(),
1793                         array( 'known', 'noclasses' )
1794                 );
1795         }
1796
1797         function showEmailUser( $id ) {
1798                 global $wgUser;
1799                 $targetUser = User::newFromId( $id );
1800                 return  $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1801                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1802         }
1803
1804         function emailUserLink() {
1805                 return $this->link(
1806                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1807                         wfMsg( 'emailuser' ),
1808                         array(),
1809                         array(),
1810                         array( 'known', 'noclasses' )
1811                 );
1812         }
1813
1814         function watchPageLinksLink() {
1815                 global $wgOut;
1816                 if ( ! $wgOut->isArticleRelated() ) {
1817                         return '(' . wfMsg( 'notanarticle' ) . ')';
1818                 } else {
1819                         return $this->link(
1820                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1821                                 wfMsg( 'recentchangeslinked-toolbox' ),
1822                                 array(),
1823                                 array(),
1824                                 array( 'known', 'noclasses' )
1825                         );
1826                 }
1827         }
1828
1829         function trackbackLink() {
1830                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1831                         . wfMsg( 'trackbacklink' ) . '</a>';
1832         }
1833
1834         function otherLanguages() {
1835                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1836
1837                 if ( $wgHideInterlanguageLinks ) {
1838                         return '';
1839                 }
1840
1841                 $a = $wgOut->getLanguageLinks();
1842                 if ( 0 == count( $a ) ) {
1843                         return '';
1844                 }
1845
1846                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1847                 $first = true;
1848                 if( $wgContLang->isRTL() ) $s .= '<span dir="LTR">';
1849                 foreach( $a as $l ) {
1850                         if ( !$first ) {
1851                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1852                         }
1853                         $first = false;
1854
1855                         $nt = Title::newFromText( $l );
1856                         $url = $nt->escapeFullURL();
1857                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1858
1859                         if ( '' == $text ) { $text = $l; }
1860                         $style = $this->getExternalLinkAttributes();
1861                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1862                 }
1863                 if( $wgContLang->isRTL() ) $s .= '</span>';
1864                 return $s;
1865         }
1866
1867         function talkLink() {
1868                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1869                         # No discussion links for special pages
1870                         return '';
1871                 }
1872
1873                 $linkOptions = array();
1874
1875                 if( $this->mTitle->isTalkPage() ) {
1876                         $link = $this->mTitle->getSubjectPage();
1877                         switch( $link->getNamespace() ) {
1878                                 case NS_MAIN:
1879                                         $text = wfMsg( 'articlepage' );
1880                                         break;
1881                                 case NS_USER:
1882                                         $text = wfMsg( 'userpage' );
1883                                         break;
1884                                 case NS_PROJECT:
1885                                         $text = wfMsg( 'projectpage' );
1886                                         break;
1887                                 case NS_FILE:
1888                                         $text = wfMsg( 'imagepage' );
1889                                         # Make link known if image exists, even if the desc. page doesn't.
1890                                         if( wfFindFile( $link ) )
1891                                                 $linkOptions[] = 'known';
1892                                         break;
1893                                 case NS_MEDIAWIKI:
1894                                         $text = wfMsg( 'mediawikipage' );
1895                                         break;
1896                                 case NS_TEMPLATE:
1897                                         $text = wfMsg( 'templatepage' );
1898                                         break;
1899                                 case NS_HELP:
1900                                         $text = wfMsg( 'viewhelppage' );
1901                                         break;
1902                                 case NS_CATEGORY:
1903                                         $text = wfMsg( 'categorypage' );
1904                                         break;
1905                                 default:
1906                                         $text = wfMsg( 'articlepage' );
1907                         }
1908                 } else {
1909                         $link = $this->mTitle->getTalkPage();
1910                         $text = wfMsg( 'talkpage' );
1911                 }
1912
1913                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1914
1915                 return $s;
1916         }
1917
1918         function commentLink() {
1919                 global $wgOut;
1920
1921                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1922                         return '';
1923                 }
1924
1925                 # __NEWSECTIONLINK___ changes behaviour here
1926                 # If it is present, the link points to this page, otherwise
1927                 # it points to the talk page
1928                 if( $this->mTitle->isTalkPage() ) {
1929                         $title = $this->mTitle;
1930                 } elseif( $wgOut->showNewSectionLink() ) {
1931                         $title = $this->mTitle;
1932                 } else {
1933                         $title = $this->mTitle->getTalkPage();
1934                 }
1935
1936                 return $this->link(
1937                         $title,
1938                         wfMsg( 'postcomment' ),
1939                         array(),
1940                         array(
1941                                 'action' => 'edit',
1942                                 'section' => 'new'
1943                         ),
1944                         array( 'known', 'noclasses' )
1945                 );
1946         }
1947
1948         /* these are used extensively in SkinTemplate, but also some other places */
1949         static function makeMainPageUrl( $urlaction = '' ) {
1950                 $title = Title::newMainPage();
1951                 self::checkTitle( $title, '' );
1952                 return $title->getLocalURL( $urlaction );
1953         }
1954
1955         static function makeSpecialUrl( $name, $urlaction = '' ) {
1956                 $title = SpecialPage::getTitleFor( $name );
1957                 return $title->getLocalURL( $urlaction );
1958         }
1959
1960         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1961                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1962                 return $title->getLocalURL( $urlaction );
1963         }
1964
1965         static function makeI18nUrl( $name, $urlaction = '' ) {
1966                 $title = Title::newFromText( wfMsgForContent( $name ) );
1967                 self::checkTitle( $title, $name );
1968                 return $title->getLocalURL( $urlaction );
1969         }
1970
1971         static function makeUrl( $name, $urlaction = '' ) {
1972                 $title = Title::newFromText( $name );
1973                 self::checkTitle( $title, $name );
1974                 return $title->getLocalURL( $urlaction );
1975         }
1976
1977         # If url string starts with http, consider as external URL, else
1978         # internal
1979         static function makeInternalOrExternalUrl( $name ) {
1980                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1981                         return $name;
1982                 } else {
1983                         return self::makeUrl( $name );
1984                 }
1985         }
1986
1987         # this can be passed the NS number as defined in Language.php
1988         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1989                 $title = Title::makeTitleSafe( $namespace, $name );
1990                 self::checkTitle( $title, $name );
1991                 return $title->getLocalURL( $urlaction );
1992         }
1993
1994         /* these return an array with the 'href' and boolean 'exists' */
1995         static function makeUrlDetails( $name, $urlaction = '' ) {
1996                 $title = Title::newFromText( $name );
1997                 self::checkTitle( $title, $name );
1998                 return array(
1999                         'href' => $title->getLocalURL( $urlaction ),
2000                         'exists' => $title->getArticleID() != 0 ? true : false
2001                 );
2002         }
2003
2004         /**
2005          * Make URL details where the article exists (or at least it's convenient to think so)
2006          */
2007         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2008                 $title = Title::newFromText( $name );
2009                 self::checkTitle( $title, $name );
2010                 return array(
2011                         'href' => $title->getLocalURL( $urlaction ),
2012                         'exists' => true
2013                 );
2014         }
2015
2016         # make sure we have some title to operate on
2017         static function checkTitle( &$title, $name ) {
2018                 if( !is_object( $title ) ) {
2019                         $title = Title::newFromText( $name );
2020                         if( !is_object( $title ) ) {
2021                                 $title = Title::newFromText( '--error: link target missing--' );
2022                         }
2023                 }
2024         }
2025
2026         /**
2027          * Build an array that represents the sidebar(s), the navigation bar among them
2028          *
2029          * @return array
2030          */
2031         function buildSidebar() {
2032                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2033                 global $wgLang;
2034                 wfProfileIn( __METHOD__ );
2035
2036                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2037
2038                 if ( $wgEnableSidebarCache ) {
2039                         $cachedsidebar = $parserMemc->get( $key );
2040                         if ( $cachedsidebar ) {
2041                                 wfProfileOut( __METHOD__ );
2042                                 return $cachedsidebar;
2043                         }
2044                 }
2045
2046                 $bar = array();
2047                 $this->addToSidebar( &$bar, 'sidebar' );
2048
2049                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2050                 if ( $wgEnableSidebarCache ) $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2051                 wfProfileOut( __METHOD__ );
2052                 return $bar;
2053         }
2054         /**
2055          * Add content from a sidebar system message
2056          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2057          *
2058          * @param &$bar array
2059          * @param $message String
2060          */
2061         function addToSidebar( &$bar, $message ) {
2062                 $lines = explode( "\n", wfMsgForContent( $message ) );
2063                 $heading = '';
2064                 foreach( $lines as $line ) {
2065                         if( strpos( $line, '*' ) !== 0 )
2066                                 continue;
2067                         if( strpos( $line, '**') !== 0 ) {
2068                                 $heading = trim( $line, '* ' );
2069                                 if( !array_key_exists( $heading, $bar ) ) $bar[$heading] = array();
2070                         } else {
2071                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2072                                         $line = array_map( 'trim', explode( '|', trim( $line, '* ' ), 2 ) );
2073                                         $link = wfMsgForContent( $line[0] );
2074                                         if( $link == '-' )
2075                                                 continue;
2076
2077                                         $text = wfMsgExt( $line[1], 'parsemag' );
2078                                         if( wfEmptyMsg( $line[1], $text ) )
2079                                                 $text = $line[1];
2080                                         if( wfEmptyMsg( $line[0], $link ) )
2081                                                 $link = $line[0];
2082
2083                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2084                                                 $href = $link;
2085                                         } else {
2086                                                 $title = Title::newFromText( $link );
2087                                                 if ( $title ) {
2088                                                         $title = $title->fixSpecialName();
2089                                                         $href = $title->getLocalURL();
2090                                                 } else {
2091                                                         $href = 'INVALID-TITLE';
2092                                                 }
2093                                         }
2094
2095                                         $bar[$heading][] = array(
2096                                                 'text' => $text,
2097                                                 'href' => $href,
2098                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2099                                                 'active' => false
2100                                         );
2101                                 } else { continue; }
2102                         }
2103                 }
2104         }
2105
2106         /**
2107          * Should we include common/wikiprintable.css?  Skins that have their own
2108          * print stylesheet should override this and return false.  (This is an
2109          * ugly hack to get Monobook to play nicely with
2110          * OutputPage::headElement().)
2111          *
2112          * @return bool
2113          */
2114         public function commonPrintStylesheet() {
2115                 return true;
2116         }
2117 }