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                         'wgCategories' => $wgOut->getCategories(),
 420                 );
 421                 if ( $wgContLang->hasVariants() ) {
 422                         $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
 423                 }
 424
 425                 //if on upload page output the extension list & js_upload
 426                 if( SpecialPage::resolveAlias( $wgTitle->getDBkey() ) ==  "Upload" ) {
 427                         global $wgFileExtensions, $wgAjaxUploadInterface;
 428                         $vars['wgFileExtensions'] = $wgFileExtensions;
 429                         $vars['wgAjaxUploadInterface'] = $wgAjaxUploadInterface;
 430                 }
 431
 432                 if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
 433                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 434                         $vars['wgDBname'] = $wgDBname;
 435                         $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $wgUser );
 436                         $vars['wgMWSuggestMessages'] = array( wfMsg( 'search-mwsuggest-enabled' ), wfMsg( 'search-mwsuggest-disabled' ) );
 437                 }
 438
 439                 foreach( $wgRestrictionTypes as $type )
 440                         $vars['wgRestriction' . ucfirst( $type )] = $wgTitle->getRestrictions( $type );
 441
 442                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
 443                         $vars['wgLivepreviewMessageLoading'] = wfMsg( 'livepreview-loading' );
 444                         $vars['wgLivepreviewMessageReady']   = wfMsg( 'livepreview-ready' );
 445                         $vars['wgLivepreviewMessageFailed']  = wfMsg( 'livepreview-failed' );
 446                         $vars['wgLivepreviewMessageError']   = wfMsg( 'livepreview-error' );
 447                 }
 448
 449                 //add api proxy var and script link if on the special proxy page:
 450                 if( $wgEnableJS2system &&
 451                         $wgTitle->getNamespace() == NS_MEDIAWIKI &&
 452                         $wgTitle->getDBKey() == 'ApiProxy' )
 453                 {
 454                         $vars['wgEnableIframeApiProxy'] = $wgEnableIframeApiProxy;
 455                         //also add the apiProxy Page script if we are on that page
 456                         if( $wgEnableIframeApiProxy )
 457                                 $wgOut->addScriptClass( 'apiProxyPage' );
 458                 }
 459
 460                 if ( $wgOut->isArticleRelated() && $wgUseAjax && $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 461                         $msgs = (object)array();
 462                         foreach ( array( 'watch', 'unwatch', 'watching', 'unwatching' ) as $msgName ) {
 463                                 $msgs->{$msgName . 'Msg'} = wfMsg( $msgName );
 464                         }
 465                         $vars['wgAjaxWatch'] = $msgs;
 466                 }
 467
 468                 // Allow extensions to add their custom variables to the global JS variables
 469                 wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
 470
 471                 return self::makeVariablesScript( $vars );
 472         }
 473
 474         /**
 475          * To make it harder for someone to slip a user a fake
 476          * user-JavaScript or user-CSS preview, a random token
 477          * is associated with the login session. If it's not
 478          * passed back with the preview request, we won't render
 479          * the code.
 480          *
 481          * @param string $action
 482          * @return bool
 483          */
 484         public function userCanPreview( $action ) {
 485                 global $wgRequest, $wgUser;
 486
 487                 if( $action != 'submit' )
 488                         return false;
 489                 if( !$wgRequest->wasPosted() )
 490                         return false;
 491                 if( !$this->mTitle->userCanEditCssSubpage() )
 492                         return false;
 493                 if( !$this->mTitle->userCanEditJsSubpage() )
 494                         return false;
 495                 return $wgUser->matchEditToken(
 496                         $wgRequest->getVal( 'wpEditToken' ) );
 497         }
 498
 499         /**
 500          * generated JavaScript action=raw&gen=js
 501          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 502          * nated together.  For some bizarre reason, it does *not* return any
 503          * custom user JS from subpages.  Huh?
 504          *
 505          * There's absolutely no reason to have separate Monobook/Common JSes.
 506          * Any JS that cares can just check the skin variable generated at the
 507          * top.  For now Monobook.js will be maintained, but it should be consi-
 508          * dered deprecated.
 509          *
 510          * @param $force_skin string If set, overrides the skin name
 511          *
 512          * @return string
 513          */
 514         public function generateUserJs( $skinName = null ) {
 515                 global $wgStylePath;
 516
 517                 wfProfileIn( __METHOD__ );
 518                 if( !$skinName ) {
 519                         $skinName =     $this->getSkinName();
 520                 }
 521
 522                 $s = "/* generated javascript */\n";
 523                 $s .= "var skin = '" . Xml::escapeJsString($skinName ) . "';\n";
 524                 $s .= "var stylepath = '" . Xml::escapeJsString( $wgStylePath ) . "';";
 525                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 526                 $commonJs = wfMsgForContent( 'common.js' );
 527                 if ( !wfEmptyMsg( 'common.js', $commonJs ) ) {
 528                         $s .= $commonJs;
 529                 }
 530
 531                 $s .= "\n\n/* MediaWiki:".ucfirst( $skinName ).".js */\n";
 532                 // avoid inclusion of non defined user JavaScript (with custom skins only)
 533                 // by checking for default message content
 534                 $msgKey = ucfirst( $skinName ) . '.js';
 535                 $userJS = wfMsgForContent( $msgKey );
 536                 if ( !wfEmptyMsg( $msgKey, $userJS ) ) {
 537                         $s .= $userJS;
 538                 }
 539
 540                 wfProfileOut( __METHOD__ );
 541                 return $s;
 542         }
 543
 544         /**
 545          * Generate user stylesheet for action=raw&gen=css
 546          */
 547         public function generateUserStylesheet() {
 548                 wfProfileIn( __METHOD__ );
 549                 $s = "/* generated user stylesheet */\n" .
 550                         $this->reallyGenerateUserStylesheet();
 551                 wfProfileOut( __METHOD__ );
 552                 return $s;
 553         }
 554
 555         /**
 556          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 557          */
 558         protected function reallyGenerateUserStylesheet(){
 559                 global $wgUser;
 560                 $s = '';
 561                 if( ( $undopt = $wgUser->getOption( 'underline' ) ) < 2 ) {
 562                         $underline = $undopt ? 'underline' : 'none';
 563                         $s .= "a { text-decoration: $underline; }\n";
 564                 }
 565                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 566                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 567                 } else {
 568                         $s .= <<<END
 569 a.new, #quickbar a.new,
 570 a.stub, #quickbar a.stub {
 571         color: inherit;
 572 }
 573 a.new:after, #quickbar a.new:after {
 574         content: "?";
 575         color: #CC2200;
 576 }
 577 a.stub:after, #quickbar a.stub:after {
 578         content: "!";
 579         color: #772233;
 580 }
 581 END;
 582                 }
 583                 if( $wgUser->getOption( 'justify' ) ) {
 584                         $s .= "#article, #bodyContent, #mw_content { text-align: justify; }\n";
 585                 }
 586                 if( !$wgUser->getOption( 'showtoc' ) ) {
 587                         $s .= "#toc { display: none; }\n";
 588                 }
 589                 if( !$wgUser->getOption( 'editsection' ) ) {
 590                         $s .= ".editsection { display: none; }\n";
 591                 }
 592                 $fontstyle = $wgUser->getOption( 'editfont' );
 593                 if ( $fontstyle !== 'default' ) {
 594                         $s .= "textarea { font-family: $fontstyle; }\n";
 595                 }
 596                 return $s;
 597         }
 598
 599         /**
 600          * @private
 601          */
 602         function setupUserCss( OutputPage $out ) {
 603                 global $wgRequest, $wgContLang, $wgUser;
 604                 global $wgAllowUserCss, $wgUseSiteCss, $wgSquidMaxage, $wgStylePath;
 605
 606                 wfProfileIn( __METHOD__ );
 607
 608                 $this->setupSkinUserCss( $out );
 609
 610                 $siteargs = array(
 611                         'action' => 'raw',
 612                         'maxage' => $wgSquidMaxage,
 613                 );
 614
 615                 // Add any extension CSS
 616                 foreach ( $out->getExtStyle() as $url ) {
 617                         $out->addStyle( $url );
 618                 }
 619
 620                 // If we use the site's dynamic CSS, throw that in, too
 621                 // Per-site custom styles
 622                 if( $wgUseSiteCss ) {
 623                         global $wgHandheldStyle;
 624                         $query = wfArrayToCGI( array(
 625                                 'usemsgcache' => 'yes',
 626                                 'ctype' => 'text/css',
 627                                 'smaxage' => $wgSquidMaxage
 628                         ) + $siteargs );
 629                         # Site settings must override extension css! (bug 15025)
 630                         $out->addStyle( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) );
 631                         $out->addStyle( self::makeNSUrl( 'Print.css', $query, NS_MEDIAWIKI ), 'print' );
 632                         if( $wgHandheldStyle ) {
 633                                 $out->addStyle( self::makeNSUrl( 'Handheld.css', $query, NS_MEDIAWIKI ), 'handheld' );
 634                         }
 635                         $out->addStyle( self::makeNSUrl( $this->getSkinName() . '.css', $query, NS_MEDIAWIKI ) );
 636                 }
 637
 638                 if( $wgUser->isLoggedIn() ) {
 639                         // Ensure that logged-in users' generated CSS isn't clobbered
 640                         // by anons' publicly cacheable generated CSS.
 641                         $siteargs['smaxage'] = '0';
 642                         $siteargs['ts'] = $wgUser->mTouched;
 643                 }
 644                 // Per-user styles based on preferences
 645                 $siteargs['gen'] = 'css';
 646                 if( ( $us = $wgRequest->getVal( 'useskin', '' ) ) !== '' ) {
 647                         $siteargs['useskin'] = $us;
 648                 }
 649                 $out->addStyle( self::makeUrl( '-', wfArrayToCGI( $siteargs ) ) );
 650
 651                 // Per-user custom style pages
 652                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 653                         $action = $wgRequest->getVal( 'action' );
 654                         # If we're previewing the CSS page, use it
 655                         if( $this->mTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 656                                 // @FIXME: properly escape the cdata!
 657                                 $out->addInlineStyle( $wgRequest->getText( 'wpTextbox1' ) );
 658                         } else {
 659                                 $out->addStyle( self::makeUrl( $this->userpage . '/' . $this->getSkinName() .'.css',
 660                                         'action=raw&ctype=text/css' ) );
 661                         }
 662                 }
 663
 664                 wfProfileOut( __METHOD__ );
 665         }
 666
 667         /**
 668          * Add skin specific stylesheets
 669          * @param $out OutputPage
 670          */
 671         function setupSkinUserCss( OutputPage $out ) {
 672                 $out->addStyle( 'common/shared.css' );
 673                 $out->addStyle( 'common/oldshared.css' );
 674                 $out->addStyle( $this->getStylesheet() );
 675                 $out->addStyle( 'common/common_rtl.css', '', '', 'rtl' );
 676         }
 677
 678         function getBodyOptions() {
 679                 global $wgUser, $wgOut, $wgRequest, $wgContLang;
 680
 681                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 682
 683                 if ( 0 != $this->mTitle->getNamespace() ) {
 684                         $a = array( 'bgcolor' => '#ffffec' );
 685                 }
 686                 else $a = array( 'bgcolor' => '#FFFFFF' );
 687                 if( $wgOut->isArticle() && $wgUser->getOption( 'editondblclick' ) &&
 688                   $this->mTitle->quickUserCan( 'edit' ) ) {
 689                         $s = $this->mTitle->getFullURL( $this->editUrlOptions() );
 690                         $s = 'document.location = "' .Xml::escapeJsString( $s ) .'";';
 691                         $a += array( 'ondblclick' => $s );
 692                 }
 693                 $a['onload'] = $wgOut->getOnloadHandler();
 694                 $a['class'] =
 695                         'mediawiki' .
 696                         ' '.( $wgContLang->getDir() ).
 697                         ' '.$this->getPageClasses( $this->mTitle ) .
 698                         ' skin-'. Sanitizer::escapeClass( $this->getSkinName() );
 699                 return $a;
 700         }
 701
 702         function getPageClasses( $title ) {
 703                 $numeric = 'ns-'.$title->getNamespace();
 704                 if( $title->getNamespace() == NS_SPECIAL ) {
 705                         $type = 'ns-special';
 706                 } elseif( $title->isTalkPage() ) {
 707                         $type = 'ns-talk';
 708                 } else {
 709                         $type = 'ns-subject';
 710                 }
 711                 $name = Sanitizer::escapeClass( 'page-'.$title->getPrefixedText() );
 712                 return "$numeric $type $name";
 713         }
 714
 715         /**
 716          * URL to the logo
 717          */
 718         function getLogo() {
 719                 global $wgLogo;
 720                 return $wgLogo;
 721         }
 722
 723         /**
 724          * This will be called immediately after the <body> tag.  Split into
 725          * two functions to make it easier to subclass.
 726          */
 727         function beforeContent() {
 728                 return $this->doBeforeContent();
 729         }
 730
 731         function doBeforeContent() {
 732                 global $wgContLang;
 733                 wfProfileIn( __METHOD__ );
 734
 735                 $s = '';
 736                 $qb = $this->qbSetting();
 737
 738                 if( $langlinks = $this->otherLanguages() ) {
 739                         $rows = 2;
 740                         $borderhack = '';
 741                 } else {
 742                         $rows = 1;
 743                         $langlinks = false;
 744                         $borderhack = 'class="top"';
 745                 }
 746
 747                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 748                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 749
 750                 $shove = ( $qb != 0 );
 751                 $left = ( $qb == 1 || $qb == 3 );
 752                 if( $wgContLang->isRTL() ) $left = !$left;
 753
 754                 if( !$shove ) {
 755                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 756                           $this->logoText() . '</td>';
 757                 } elseif( $left ) {
 758                         $s .= $this->getQuickbarCompensator( $rows );
 759                 }
 760                 $l = $wgContLang->alignStart();
 761                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 762
 763                 $s .= $this->topLinks();
 764                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 765
 766                 $r = $wgContLang->alignEnd();
 767                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 768                 $s .= $this->nameAndLogin();
 769                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 770
 771                 if ( $langlinks ) {
 772                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 773                 }
 774
 775                 if ( $shove && !$left ) { # Right
 776                         $s .= $this->getQuickbarCompensator( $rows );
 777                 }
 778                 $s .= "</tr>\n</table>\n</div>\n";
 779                 $s .= "\n<div id='article'>\n";
 780
 781                 $notice = wfGetSiteNotice();
 782                 if( $notice ) {
 783                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 784                 }
 785                 $s .= $this->pageTitle();
 786                 $s .= $this->pageSubtitle();
 787                 $s .= $this->getCategories();
 788                 wfProfileOut( __METHOD__ );
 789                 return $s;
 790         }
 791
 792
 793         function getCategoryLinks() {
 794                 global $wgOut, $wgUseCategoryBrowser;
 795                 global $wgContLang, $wgUser;
 796
 797                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 798
 799                 # Separator
 800                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 801
 802                 // Use Unicode bidi embedding override characters,
 803                 // to make sure links don't smash each other up in ugly ways.
 804                 $dir = $wgContLang->getDir();
 805                 $embed = "<span dir='$dir'>";
 806                 $pop = '</span>';
 807
 808                 $allCats = $wgOut->getCategoryLinks();
 809                 $s = '';
 810                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 811                 if ( !empty( $allCats['normal'] ) ) {
 812                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 813
 814                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 815                         $s .= '<div id="mw-normal-catlinks">' .
 816                                 $this->link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 817                                 . $colon . $t . '</div>';
 818                 }
 819
 820                 # Hidden categories
 821                 if ( isset( $allCats['hidden'] ) ) {
 822                         if ( $wgUser->getBoolOption( 'showhiddencats' ) ) {
 823                                 $class ='mw-hidden-cats-user-shown';
 824                         } elseif ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
 825                                 $class = 'mw-hidden-cats-ns-shown';
 826                         } else {
 827                                 $class = 'mw-hidden-cats-hidden';
 828                         }
 829                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 830                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 831                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 832                                 "</div>";
 833                 }
 834
 835                 # optional 'dmoz-like' category browser. Will be shown under the list
 836                 # of categories an article belong to
 837                 if( $wgUseCategoryBrowser ){
 838                         $s .= '<br /><hr />';
 839
 840                         # get a big array of the parents tree
 841                         $parenttree = $this->mTitle->getParentCategoryTree();
 842                         # Skin object passed by reference cause it can not be
 843                         # accessed under the method subfunction drawCategoryBrowser
 844                         $tempout = explode( "\n", Skin::drawCategoryBrowser( $parenttree, $this ) );
 845                         # Clean out bogus first entry and sort them
 846                         unset( $tempout[0] );
 847                         asort( $tempout );
 848                         # Output one per line
 849                         $s .= implode( "<br />\n", $tempout );
 850                 }
 851
 852                 return $s;
 853         }
 854
 855         /**
 856          * Render the array as a serie of links.
 857          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 858          * @param &skin Object: skin passed by reference
 859          * @return String separated by &gt;, terminate with "\n"
 860          */
 861         function drawCategoryBrowser( $tree, &$skin ){
 862                 $return = '';
 863                 foreach( $tree as $element => $parent ) {
 864                         if( empty( $parent ) ) {
 865                                 # element start a new list
 866                                 $return .= "\n";
 867                         } else {
 868                                 # grab the others elements
 869                                 $return .= Skin::drawCategoryBrowser( $parent, $skin ) . ' &gt; ';
 870                         }
 871                         # add our current element to the list
 872                         $eltitle = Title::newFromText( $element );
 873                         $return .=  $skin->link( $eltitle, $eltitle->getText() );
 874                 }
 875                 return $return;
 876         }
 877
 878         function getCategories() {
 879                 $catlinks = $this->getCategoryLinks();
 880
 881                 $classes = 'catlinks';
 882
 883                 // Check what we're showing
 884                 global $wgOut, $wgUser;
 885                 $allCats = $wgOut->getCategoryLinks();
 886                 $showHidden = $wgUser->getBoolOption( 'showhiddencats' ) ||
 887                                                 $this->mTitle->getNamespace() == NS_CATEGORY;
 888
 889                 if( empty($allCats['normal']) && !( !empty($allCats['hidden']) && $showHidden ) ) {
 890                         $classes .= ' catlinks-allhidden';
 891                 }
 892
 893                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 894         }
 895
 896         function getQuickbarCompensator( $rows = 1 ) {
 897                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 898         }
 899
 900         /**
 901          * This runs a hook to allow extensions placing their stuff after content
 902          * and article metadata (e.g. categories).
 903          * Note: This function has nothing to do with afterContent().
 904          *
 905          * This hook is placed here in order to allow using the same hook for all
 906          * skins, both the SkinTemplate based ones and the older ones, which directly
 907          * use this class to get their data.
 908          *
 909          * The output of this function gets processed in SkinTemplate::outputPage() for
 910          * the SkinTemplate based skins, all other skins should directly echo it.
 911          *
 912          * Returns an empty string by default, if not changed by any hook function.
 913          */
 914         protected function afterContentHook() {
 915                 $data = '';
 916
 917                 if( wfRunHooks( 'SkinAfterContent', array( &$data ) ) ){
 918                         // adding just some spaces shouldn't toggle the output
 919                         // of the whole <div/>, so we use trim() here
 920                         if( trim( $data ) != '' ){
 921                                 // Doing this here instead of in the skins to
 922                                 // ensure that the div has the same ID in all
 923                                 // skins
 924                                 $data = "<div id='mw-data-after-content'>\n" .
 925                                         "\t$data\n" .
 926                                         "</div>\n";
 927                         }
 928                 } else {
 929                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 930                 }
 931
 932                 return $data;
 933         }
 934
 935         /**
 936          * Generate debug data HTML for displaying at the bottom of the main content
 937          * area.
 938          * @return String HTML containing debug data, if enabled (otherwise empty).
 939          */
 940         protected function generateDebugHTML() {
 941                 global $wgShowDebug, $wgOut;
 942                 if ( $wgShowDebug ) {
 943                         $listInternals = $this->formatDebugHTML( $wgOut->mDebugtext );
 944                         return "\n<hr />\n<strong>Debug data:</strong><ul style=\"font-family:monospace;\" id=\"mw-debug-html\">" .
 945                                 $listInternals . "</ul>\n";
 946                 }
 947                 return '';
 948         }
 949
 950         private function formatDebugHTML( $debugText ) {
 951                 $lines = explode( "\n", $debugText );
 952                 $curIdent = 0;
 953                 $ret = '<li>';
 954                 foreach( $lines as $line ) {
 955                         $m = array();
 956                         $display = ltrim( $line );
 957                         $ident = strlen( $line ) - strlen( $display );
 958                         $diff = $ident - $curIdent;
 959
 960                         if ( $display == '' )
 961                                 $display = "\xc2\xa0";
 962
 963                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 964                                 $ident = $curIdent;
 965                                 $diff = 0;
 966                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 967                         } else {
 968                                 $display = htmlspecialchars( $display );
 969                         }
 970
 971                         if ( $diff < 0 )
 972                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 973                         elseif ( $diff == 0 )
 974                                 $ret .= "</li><li>\n";
 975                         else
 976                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 977                         $ret .= $display . "\n";
 978
 979                         $curIdent = $ident;
 980                 }
 981                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 982                 return $ret;
 983         }
 984
 985         /**
 986          * This gets called shortly before the </body> tag.
 987          * @return String HTML to be put before </body>
 988          */
 989         function afterContent() {
 990                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 991                 return $printfooter . $this->generateDebugHTML() . $this->doAfterContent();
 992         }
 993
 994         /**
 995          * This gets called shortly before the </body> tag.
 996          * @return String HTML-wrapped JS code to be put before </body>
 997          */
 998         function bottomScripts() {
 999                 $bottomScriptText = "\n" . Html::inlineScript( 'if (window.runOnloadHook) runOnloadHook();' ) . "\n";
1000                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
1001                 return $bottomScriptText;
1002         }
1003
1004         /** @return string Retrievied from HTML text */
1005         function printSource() {
1006                 $url = htmlspecialchars( $this->mTitle->getFullURL() );
1007                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
1008         }
1009
1010         function printFooter() {
1011                 return "<p>" .  $this->printSource() .
1012                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
1013         }
1014
1015         /** overloaded by derived classes */
1016         function doAfterContent() { return '</div></div>'; }
1017
1018         function pageTitleLinks() {
1019                 global $wgOut, $wgUser, $wgRequest, $wgLang;
1020
1021                 $oldid = $wgRequest->getVal( 'oldid' );
1022                 $diff = $wgRequest->getVal( 'diff' );
1023                 $action = $wgRequest->getText( 'action' );
1024
1025                 $s[] = $this->printableLink();
1026                 $disclaimer = $this->disclaimerLink(); # may be empty
1027                 if( $disclaimer ) {
1028                         $s[] = $disclaimer;
1029                 }
1030                 $privacy = $this->privacyLink(); # may be empty too
1031                 if( $privacy ) {
1032                         $s[] = $privacy;
1033                 }
1034
1035                 if ( $wgOut->isArticleRelated() ) {
1036                         if ( $this->mTitle->getNamespace() == NS_FILE ) {
1037                                 $name = $this->mTitle->getDBkey();
1038                                 $image = wfFindFile( $this->mTitle );
1039                                 if( $image ) {
1040                                         $link = htmlspecialchars( $image->getURL() );
1041                                         $style = $this->getInternalLinkAttributes( $link, $name );
1042                                         $s[] = "<a href=\"{$link}\"{$style}>{$name}</a>";
1043                                 }
1044                         }
1045                 }
1046                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
1047                         $s[] .= $this->link(
1048                                         $this->mTitle,
1049                                         wfMsg( 'currentrev' ),
1050                                         array(),
1051                                         array(),
1052                                         array( 'known', 'noclasses' )
1053                         );
1054                 }
1055
1056                 if ( $wgUser->getNewtalk() ) {
1057                         # do not show "You have new messages" text when we are viewing our
1058                         # own talk page
1059                         if( !$this->mTitle->equals( $wgUser->getTalkPage() ) ) {
1060                                 $tl = $this->link(
1061                                         $wgUser->getTalkPage(),
1062                                         wfMsgHtml( 'newmessageslink' ),
1063                                         array(),
1064                                         array( 'redirect' => 'no' ),
1065                                         array( 'known', 'noclasses' )
1066                                 );
1067
1068                                 $dl = $this->link(
1069                                         $wgUser->getTalkPage(),
1070                                         wfMsgHtml( 'newmessagesdifflink' ),
1071                                         array(),
1072                                         array( 'diff' => 'cur' ),
1073                                         array( 'known', 'noclasses' )
1074                                 );
1075                                 $s[] = '<strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
1076                                 # disable caching
1077                                 $wgOut->setSquidMaxage( 0 );
1078                                 $wgOut->enableClientCache( false );
1079                         }
1080                 }
1081
1082                 $undelete = $this->getUndeleteLink();
1083                 if( !empty( $undelete ) ) {
1084                         $s[] = $undelete;
1085                 }
1086                 return $wgLang->pipeList( $s );
1087         }
1088
1089         function getUndeleteLink() {
1090                 global $wgUser, $wgContLang, $wgLang, $wgRequest;
1091
1092                 $action = $wgRequest->getVal( 'action', 'view' );
1093
1094                 if ( $wgUser->isAllowed( 'deletedhistory' ) &&
1095                         ( $this->mTitle->getArticleId() == 0 || $action == 'history' ) ) {
1096                         $n = $this->mTitle->isDeleted();
1097                         if ( $n ) {
1098                                 if ( $wgUser->isAllowed( 'undelete' ) ) {
1099                                         $msg = 'thisisdeleted';
1100                                 } else {
1101                                         $msg = 'viewdeleted';
1102                                 }
1103                                 return wfMsg(
1104                                         $msg,
1105                                         $this->link(
1106                                                 SpecialPage::getTitleFor( 'Undelete', $this->mTitle->getPrefixedDBkey() ),
1107                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) ),
1108                                                 array(),
1109                                                 array(),
1110                                                 array( 'known', 'noclasses' )
1111                                         )
1112                                 );
1113                         }
1114                 }
1115                 return '';
1116         }
1117
1118         function printableLink() {
1119                 global $wgOut, $wgFeedClasses, $wgRequest, $wgLang;
1120
1121                 $s = array();
1122
1123                 if ( !$wgOut->isPrintable() ) {
1124                         $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
1125                         $s[] = "<a href=\"$printurl\" rel=\"alternate\">" . wfMsg( 'printableversion' ) . '</a>';
1126                 }
1127
1128                 if( $wgOut->isSyndicated() ) {
1129                         foreach( $wgFeedClasses as $format => $class ) {
1130                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
1131                                 $s[] = "<a href=\"$feedurl\" rel=\"alternate\" type=\"application/{$format}+xml\""
1132                                                 . " class=\"feedlink\">" . wfMsgHtml( "feed-$format" ) . "</a>";
1133                         }
1134                 }
1135                 return $wgLang->pipeList( $s );
1136         }
1137
1138         function pageTitle() {
1139                 global $wgOut;
1140                 $s = '<h1 class="pagetitle">' . $wgOut->getPageTitle() . '</h1>';
1141                 return $s;
1142         }
1143
1144         function pageSubtitle() {
1145                 global $wgOut;
1146
1147                 $sub = $wgOut->getSubtitle();
1148                 if ( '' == $sub ) {
1149                         global $wgExtraSubtitle;
1150                         $sub = wfMsgExt( 'tagline', 'parsemag' ) . $wgExtraSubtitle;
1151                 }
1152                 $subpages = $this->subPageSubtitle();
1153                 $sub .= !empty( $subpages ) ? "</p><p class='subpages'>$subpages" : '';
1154                 $s = "<p class='subtitle'>{$sub}</p>\n";
1155                 return $s;
1156         }
1157
1158         function subPageSubtitle() {
1159                 $subpages = '';
1160                 if( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages ) ) )
1161                         return $subpages;
1162
1163                 global $wgOut;
1164                 if( $wgOut->isArticle() && MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1165                         $ptext = $this->mTitle->getPrefixedText();
1166                         if( preg_match( '/\//', $ptext ) ) {
1167                                 $links = explode( '/', $ptext );
1168                                 array_pop( $links );
1169                                 $c = 0;
1170                                 $growinglink = '';
1171                                 $display = '';
1172                                 foreach( $links as $link ) {
1173                                         $growinglink .= $link;
1174                                         $display .= $link;
1175                                         $linkObj = Title::newFromText( $growinglink );
1176                                         if( is_object( $linkObj ) && $linkObj->exists() ){
1177                                                 $getlink = $this->link(
1178                                                         $linkObj,
1179                                                         htmlspecialchars( $display ),
1180                                                         array(),
1181                                                         array(),
1182                                                         array( 'known', 'noclasses' )
1183                                                 );
1184                                                 $c++;
1185                                                 if( $c > 1 ) {
1186                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1187                                                 } else  {
1188                                                         $subpages .= '&lt; ';
1189                                                 }
1190                                                 $subpages .= $getlink;
1191                                                 $display = '';
1192                                         } else {
1193                                                 $display .= '/';
1194                                         }
1195                                         $growinglink .= '/';
1196                                 }
1197                         }
1198                 }
1199                 return $subpages;
1200         }
1201
1202         /**
1203          * Returns true if the IP should be shown in the header
1204          */
1205         function showIPinHeader() {
1206                 global $wgShowIPinHeader;
1207                 return $wgShowIPinHeader && session_id() != '';
1208         }
1209
1210         function nameAndLogin() {
1211                 global $wgUser, $wgLang, $wgContLang;
1212
1213                 $logoutPage = $wgContLang->specialPage( 'Userlogout' );
1214
1215                 $ret = '';
1216                 if ( $wgUser->isAnon() ) {
1217                         if( $this->showIPinHeader() ) {
1218                                 $name = wfGetIP();
1219
1220                                 $talkLink = $this->link( $wgUser->getTalkPage(),
1221                                         $wgLang->getNsText( NS_TALK ) );
1222
1223                                 $ret .= "$name ($talkLink)";
1224                         } else {
1225                                 $ret .= wfMsg( 'notloggedin' );
1226                         }
1227
1228                         $returnTo = $this->mTitle->getPrefixedDBkey();
1229                         $query = array();
1230                         if ( $logoutPage != $returnTo ) {
1231                                 $query['returnto'] = $returnTo;
1232                         }
1233
1234                         $loginlink = $wgUser->isAllowed( 'createaccount' )
1235                                 ? 'nav-login-createaccount'
1236                                 : 'login';
1237                         $ret .= "\n<br />" . $this->link(
1238                                 SpecialPage::getTitleFor( 'Userlogin' ),
1239                                 wfMsg( $loginlink ), array(), $query
1240                         );
1241                 } else {
1242                         $returnTo = $this->mTitle->getPrefixedDBkey();
1243                         $talkLink = $this->link( $wgUser->getTalkPage(),
1244                                 $wgLang->getNsText( NS_TALK ) );
1245
1246                         $ret .= $this->link( $wgUser->getUserPage(),
1247                                 htmlspecialchars( $wgUser->getName() ) );
1248                         $ret .= " ($talkLink)<br />";
1249                         $ret .= $wgLang->pipeList( array(
1250                                 $this->link(
1251                                         SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
1252                                         array(), array( 'returnto' => $returnTo )
1253                                 ),
1254                                 $this->specialLink( 'preferences' ),
1255                         ) );
1256                 }
1257                 $ret = $wgLang->pipeList( array(
1258                         $ret,
1259                         $this->link(
1260                                 Title::newFromText( wfMsgForContent( 'helppage' ) ),
1261                                 wfMsg( 'help' )
1262                         ),
1263                 ) );
1264
1265                 return $ret;
1266         }
1267
1268         function getSearchLink() {
1269                 $searchPage = SpecialPage::getTitleFor( 'Search' );
1270                 return $searchPage->getLocalURL();
1271         }
1272
1273         function escapeSearchLink() {
1274                 return htmlspecialchars( $this->getSearchLink() );
1275         }
1276
1277         function searchForm() {
1278                 global $wgRequest, $wgUseTwoButtonsSearchForm;
1279                 $search = $wgRequest->getText( 'search' );
1280
1281                 $s = '<form id="searchform'.$this->searchboxes.'" name="search" class="inline" method="post" action="'
1282                   . $this->escapeSearchLink() . "\">\n"
1283                   . '<input type="text" id="searchInput'.$this->searchboxes.'" name="search" size="19" value="'
1284                   . htmlspecialchars( substr( $search, 0, 256 ) ) . "\" />\n"
1285                   . '<input type="submit" name="go" value="' . wfMsg( 'searcharticle' ) . '" />';
1286
1287                 if( $wgUseTwoButtonsSearchForm )
1288                         $s .= '&nbsp;<input type="submit" name="fulltext" value="' . wfMsg( 'searchbutton' ) . "\" />\n";
1289                 else
1290                         $s .= ' <a href="' . $this->escapeSearchLink() . '" rel="search">' . wfMsg( 'powersearch-legend' ) . "</a>\n";
1291
1292                 $s .= '</form>';
1293
1294                 // Ensure unique id's for search boxes made after the first
1295                 $this->searchboxes = $this->searchboxes == '' ? 2 : $this->searchboxes + 1;
1296
1297                 return $s;
1298         }
1299
1300         function topLinks() {
1301                 global $wgOut;
1302
1303                 $s = array(
1304                         $this->mainPageLink(),
1305                         $this->specialLink( 'recentchanges' )
1306                 );
1307
1308                 if ( $wgOut->isArticleRelated() ) {
1309                         $s[] = $this->editThisPage();
1310                         $s[] = $this->historyLink();
1311                 }
1312                 # Many people don't like this dropdown box
1313                 #$s[] = $this->specialPagesList();
1314
1315                 if( $this->variantLinks() ) {
1316                         $s[] = $this->variantLinks();
1317                 }
1318
1319                 if( $this->extensionTabLinks() ) {
1320                         $s[] = $this->extensionTabLinks();
1321                 }
1322
1323                 // FIXME: Is using Language::pipeList impossible here? Do not quite understand the use of the newline
1324                 return implode( $s, wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n" );
1325         }
1326
1327         /**
1328          * Compatibility for extensions adding functionality through tabs.
1329          * Eventually these old skins should be replaced with SkinTemplate-based
1330          * versions, sigh...
1331          * @return string
1332          */
1333         function extensionTabLinks() {
1334                 $tabs = array();
1335                 $out = '';
1336                 $s = array();
1337                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
1338                 foreach( $tabs as $tab ) {
1339                         $s[] = Xml::element( 'a',
1340                                 array( 'href' => $tab['href'] ),
1341                                 $tab['text'] );
1342                 }
1343
1344                 if( count( $s ) ) {
1345                         global $wgLang;
1346
1347                         $out = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1348                         $out .= $wgLang->pipeList( $s );
1349                 }
1350
1351                 return $out;
1352         }
1353
1354         /**
1355          * Language/charset variant links for classic-style skins
1356          * @return string
1357          */
1358         function variantLinks() {
1359                 $s = '';
1360                 /* show links to different language variants */
1361                 global $wgDisableLangConversion, $wgLang, $wgContLang;
1362                 $variants = $wgContLang->getVariants();
1363                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
1364                         foreach( $variants as $code ) {
1365                                 $varname = $wgContLang->getVariantname( $code );
1366                                 if( $varname == 'disable' )
1367                                         continue;
1368                                 $s = $wgLang->pipeList( array(
1369                                         $s,
1370                                         '<a href="' . $this->mTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>'
1371                                 ) );
1372                         }
1373                 }
1374                 return $s;
1375         }
1376
1377         function bottomLinks() {
1378                 global $wgOut, $wgUser, $wgUseTrackbacks;
1379                 $sep = wfMsgExt( 'pipe-separator', 'escapenoentities' ) . "\n";
1380
1381                 $s = '';
1382                 if ( $wgOut->isArticleRelated() ) {
1383                         $element[] = '<strong>' . $this->editThisPage() . '</strong>';
1384                         if ( $wgUser->isLoggedIn() ) {
1385                                 $element[] = $this->watchThisPage();
1386                         }
1387                         $element[] = $this->talkLink();
1388                         $element[] = $this->historyLink();
1389                         $element[] = $this->whatLinksHere();
1390                         $element[] = $this->watchPageLinksLink();
1391
1392                         if( $wgUseTrackbacks )
1393                                 $element[] = $this->trackbackLink();
1394
1395                         if ( $this->mTitle->getNamespace() == NS_USER
1396                             || $this->mTitle->getNamespace() == NS_USER_TALK ){
1397                                 $id = User::idFromName( $this->mTitle->getText() );
1398                                 $ip = User::isIP( $this->mTitle->getText() );
1399
1400                                 if( $id || $ip ) { # both anons and non-anons have contri list
1401                                         $element[] = $this->userContribsLink();
1402                                 }
1403                                 if( $this->showEmailUser( $id ) ) {
1404                                         $element[] = $this->emailUserLink();
1405                                 }
1406                         }
1407
1408                         $s = implode( $element, $sep );
1409
1410                         if ( $this->mTitle->getArticleId() ) {
1411                                 $s .= "\n<br />";
1412                                 if( $wgUser->isAllowed( 'delete' ) ) { $s .= $this->deleteThisPage(); }
1413                                 if( $wgUser->isAllowed( 'protect' ) ) { $s .= $sep . $this->protectThisPage(); }
1414                                 if( $wgUser->isAllowed( 'move' ) ) { $s .= $sep . $this->moveThisPage(); }
1415                         }
1416                         $s .= "<br />\n" . $this->otherLanguages();
1417                 }
1418
1419                 return $s;
1420         }
1421
1422         function pageStats() {
1423                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1424                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgPageShowWatchingUsers;
1425
1426                 $oldid = $wgRequest->getVal( 'oldid' );
1427                 $diff = $wgRequest->getVal( 'diff' );
1428                 if ( ! $wgOut->isArticle() ) { return ''; }
1429                 if( !$wgArticle instanceOf Article ) { return ''; }
1430                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1431                 if ( 0 == $wgArticle->getID() ) { return ''; }
1432
1433                 $s = '';
1434                 if ( !$wgDisableCounters ) {
1435                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1436                         if ( $count ) {
1437                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1438                         }
1439                 }
1440
1441                 if( $wgMaxCredits != 0 ){
1442                         $s .= ' ' . Credits::getCredits( $wgArticle, $wgMaxCredits, $wgShowCreditsIfMax );
1443                 } else {
1444                         $s .= $this->lastModified();
1445                 }
1446
1447                 if( $wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' ) ) {
1448                         $dbr = wfGetDB( DB_SLAVE );
1449                         $res = $dbr->select( 'watchlist',
1450                                 array( 'COUNT(*) AS n' ),
1451                                 array( 'wl_title' => $dbr->strencode( $this->mTitle->getDBkey() ), 'wl_namespace' => $this->mTitle->getNamespace() ),
1452                                 __METHOD__
1453                         );
1454                         $x = $dbr->fetchObject( $res );
1455
1456                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_pageview',
1457                                 array( 'parseinline' ), $wgLang->formatNum( $x->n )
1458                         );
1459                 }
1460
1461                 return $s . ' ' .  $this->getCopyright();
1462         }
1463
1464         function getCopyright( $type = 'detect' ) {
1465                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest, $wgArticle;
1466
1467                 if ( $type == 'detect' ) {
1468                         $diff = $wgRequest->getVal( 'diff' );
1469                         $isCur = $wgArticle && $wgArticle->isCurrent();
1470                         if ( is_null( $diff ) && !$isCur && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1471                                 $type = 'history';
1472                         } else {
1473                                 $type = 'normal';
1474                         }
1475                 }
1476
1477                 if ( $type == 'history' ) {
1478                         $msg = 'history_copyright';
1479                 } else {
1480                         $msg = 'copyright';
1481                 }
1482
1483                 $out = '';
1484                 if( $wgRightsPage ) {
1485                         $title = Title::newFromText( $wgRightsPage );
1486                         $link = $this->linkKnown( $title, $wgRightsText );
1487                 } elseif( $wgRightsUrl ) {
1488                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1489                 } elseif( $wgRightsText ) {
1490                         $link = $wgRightsText;
1491                 } else {
1492                         # Give up now
1493                         return $out;
1494                 }
1495                 // Allow for site and per-namespace customization of copyright notice.
1496                 if( isset($wgArticle) )
1497                         wfRunHooks( 'SkinCopyrightFooter', array( $wgArticle->getTitle(), $type, &$msg, &$link ) );
1498
1499                 $out .= wfMsgForContent( $msg, $link );
1500                 return $out;
1501         }
1502
1503         function getCopyrightIcon() {
1504                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1505                 $out = '';
1506                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1507                         $out = $wgCopyrightIcon;
1508                 } else if ( $wgRightsIcon ) {
1509                         $icon = htmlspecialchars( $wgRightsIcon );
1510                         if ( $wgRightsUrl ) {
1511                                 $url = htmlspecialchars( $wgRightsUrl );
1512                                 $out .= '<a href="'.$url.'">';
1513                         }
1514                         $text = htmlspecialchars( $wgRightsText );
1515                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
1516                         if ( $wgRightsUrl ) {
1517                                 $out .= '</a>';
1518                         }
1519                 }
1520                 return $out;
1521         }
1522
1523         function getPoweredBy() {
1524                 global $wgStylePath;
1525                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1526                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" height="31" width="88" alt="Powered by MediaWiki" /></a>';
1527                 return $img;
1528         }
1529
1530         function lastModified() {
1531                 global $wgLang, $wgArticle;
1532                 if( $this->mRevisionId && $this->mRevisionId != $wgArticle->getLatest()) {
1533                         $timestamp = Revision::getTimestampFromId( $wgArticle->getTitle(), $this->mRevisionId );
1534                 } else {
1535                         $timestamp = $wgArticle->getTimestamp();
1536                 }
1537                 if ( $timestamp ) {
1538                         $d = $wgLang->date( $timestamp, true );
1539                         $t = $wgLang->time( $timestamp, true );
1540                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1541                 } else {
1542                         $s = '';
1543                 }
1544                 if ( wfGetLB()->getLaggedSlaveMode() ) {
1545                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1546                 }
1547                 return $s;
1548         }
1549
1550         function logoText( $align = '' ) {
1551                 if ( '' != $align ) {
1552                         $a = " align='{$align}'";
1553                 } else {
1554                         $a = '';
1555                 }
1556
1557                 $mp = wfMsg( 'mainpage' );
1558                 $mptitle = Title::newMainPage();
1559                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
1560
1561                 $logourl = $this->getLogo();
1562                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1563                 return $s;
1564         }
1565
1566         /**
1567          * show a drop-down box of special pages
1568          */
1569         function specialPagesList() {
1570                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1571                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1572                 foreach ( $pages as $name => $page ) {
1573                         $pages[$name] = $page->getDescription();
1574                 }
1575
1576                 $go = wfMsg( 'go' );
1577                 $sp = wfMsg( 'specialpages' );
1578                 $spp = $wgContLang->specialPage( 'Specialpages' );
1579
1580                 $s = '<form id="specialpages" method="get" ' .
1581                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1582                 $s .= "<select name=\"wpDropdown\">\n";
1583                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1584
1585
1586                 foreach ( $pages as $name => $desc ) {
1587                         $p = $wgContLang->specialPage( $name );
1588                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1589                 }
1590                 $s .= "</select>\n";
1591                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1592                 $s .= "</form>\n";
1593                 return $s;
1594         }
1595
1596         function mainPageLink() {
1597                 $s = $this->link(
1598                         Title::newMainPage(),
1599                         wfMsg( 'mainpage' ),
1600                         array(),
1601                         array(),
1602                         array( 'known', 'noclasses' )
1603                 );
1604                 return $s;
1605         }
1606
1607         private function footerLink ( $desc, $page ) {
1608                 // if the link description has been set to "-" in the default language,
1609                 if ( wfMsgForContent( $desc )  == '-') {
1610                         // then it is disabled, for all languages.
1611                         return '';
1612                 } else {
1613                         // Otherwise, we display the link for the user, described in their
1614                         // language (which may or may not be the same as the default language),
1615                         // but we make the link target be the one site-wide page.
1616                         $title = Title::newFromText( wfMsgForContent( $page ) );
1617                         return $this->linkKnown(
1618                                 $title,
1619                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1620                         );
1621                 }
1622         }
1623
1624         function privacyLink() {
1625                 return $this->footerLink( 'privacy', 'privacypage' );
1626         }
1627
1628         function aboutLink() {
1629                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1630         }
1631
1632         function disclaimerLink() {
1633                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1634         }
1635
1636         function editThisPage() {
1637                 global $wgOut;
1638
1639                 if ( !$wgOut->isArticleRelated() ) {
1640                         $s = wfMsg( 'protectedpage' );
1641                 } else {
1642                         if( $this->mTitle->quickUserCan( 'edit' ) && $this->mTitle->exists() ) {
1643                                 $t = wfMsg( 'editthispage' );
1644                         } elseif( $this->mTitle->quickUserCan( 'create' ) && !$this->mTitle->exists() ) {
1645                                 $t = wfMsg( 'create-this-page' );
1646                         } else {
1647                                 $t = wfMsg( 'viewsource' );
1648                         }
1649
1650                         $s = $this->link(
1651                                 $this->mTitle,
1652                                 $t,
1653                                 array(),
1654                                 $this->editUrlOptions(),
1655                                 array( 'known', 'noclasses' )
1656                         );
1657                 }
1658                 return $s;
1659         }
1660
1661         /**
1662          * Return URL options for the 'edit page' link.
1663          * This may include an 'oldid' specifier, if the current page view is such.
1664          *
1665          * @return array
1666          * @private
1667          */
1668         function editUrlOptions() {
1669                 global $wgArticle;
1670
1671                 $options = array( 'action' => 'edit' );
1672
1673                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1674                         $options['oldid'] = intval( $this->mRevisionId );
1675                 }
1676
1677                 return $options;
1678         }
1679
1680         function deleteThisPage() {
1681                 global $wgUser, $wgRequest;
1682
1683                 $diff = $wgRequest->getVal( 'diff' );
1684                 if ( $this->mTitle->getArticleId() && ( !$diff ) && $wgUser->isAllowed( 'delete' ) ) {
1685                         $t = wfMsg( 'deletethispage' );
1686
1687                         $s = $this->link(
1688                                 $this->mTitle,
1689                                 $t,
1690                                 array(),
1691                                 array( 'action' => 'delete' ),
1692                                 array( 'known', 'noclasses' )
1693                         );
1694                 } else {
1695                         $s = '';
1696                 }
1697                 return $s;
1698         }
1699
1700         function protectThisPage() {
1701                 global $wgUser, $wgRequest;
1702
1703                 $diff = $wgRequest->getVal( 'diff' );
1704                 if ( $this->mTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1705                         if ( $this->mTitle->isProtected() ) {
1706                                 $text = wfMsg( 'unprotectthispage' );
1707                                 $query = array( 'action' => 'unprotect' );
1708                         } else {
1709                                 $text = wfMsg( 'protectthispage' );
1710                                 $query = array( 'action' => 'protect' );
1711                         }
1712
1713                         $s = $this->link(
1714                                 $this->mTitle,
1715                                 $text,
1716                                 array(),
1717                                 $query,
1718                                 array( 'known', 'noclasses' )
1719                         );
1720                 } else {
1721                         $s = '';
1722                 }
1723                 return $s;
1724         }
1725
1726         function watchThisPage() {
1727                 global $wgOut;
1728                 ++$this->mWatchLinkNum;
1729
1730                 if ( $wgOut->isArticleRelated() ) {
1731                         if ( $this->mTitle->userIsWatching() ) {
1732                                 $text = wfMsg( 'unwatchthispage' );
1733                                 $query = array( 'action' => 'unwatch' );
1734                                 $id = 'mw-unwatch-link' . $this->mWatchLinkNum;
1735                         } else {
1736                                 $text = wfMsg( 'watchthispage' );
1737                                 $query = array( 'action' => 'watch' );
1738                                 $id = 'mw-watch-link' . $this->mWatchLinkNum;
1739                         }
1740
1741                         $s = $this->link(
1742                                 $this->mTitle,
1743                                 $text,
1744                                 array( 'id' => $id ),
1745                                 $query,
1746                                 array( 'known', 'noclasses' )
1747                         );
1748                 } else {
1749                         $s = wfMsg( 'notanarticle' );
1750                 }
1751                 return $s;
1752         }
1753
1754         function moveThisPage() {
1755                 if ( $this->mTitle->quickUserCan( 'move' ) ) {
1756                         return $this->link(
1757                                 SpecialPage::getTitleFor( 'Movepage' ),
1758                                 wfMsg( 'movethispage' ),
1759                                 array(),
1760                                 array( 'target' => $this->mTitle->getPrefixedDBkey() ),
1761                                 array( 'known', 'noclasses' )
1762                         );
1763                 } else {
1764                         // no message if page is protected - would be redundant
1765                         return '';
1766                 }
1767         }
1768
1769         function historyLink() {
1770                 return $this->link(
1771                         $this->mTitle,
1772                         wfMsgHtml( 'history' ),
1773                         array( 'rel' => 'archives' ),
1774                         array( 'action' => 'history' )
1775                 );
1776         }
1777
1778         function whatLinksHere() {
1779                 return $this->link(
1780                         SpecialPage::getTitleFor( 'Whatlinkshere', $this->mTitle->getPrefixedDBkey() ),
1781                         wfMsgHtml( 'whatlinkshere' ),
1782                         array(),
1783                         array(),
1784                         array( 'known', 'noclasses' )
1785                 );
1786         }
1787
1788         function userContribsLink() {
1789                 return $this->link(
1790                         SpecialPage::getTitleFor( 'Contributions', $this->mTitle->getDBkey() ),
1791                         wfMsgHtml( 'contributions' ),
1792                         array(),
1793                         array(),
1794                         array( 'known', 'noclasses' )
1795                 );
1796         }
1797
1798         function showEmailUser( $id ) {
1799                 global $wgUser;
1800                 $targetUser = User::newFromId( $id );
1801                 return  $wgUser->canSendEmail() && # the sending user must have a confirmed email address
1802                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1803         }
1804
1805         function emailUserLink() {
1806                 return $this->link(
1807                         SpecialPage::getTitleFor( 'Emailuser', $this->mTitle->getDBkey() ),
1808                         wfMsg( 'emailuser' ),
1809                         array(),
1810                         array(),
1811                         array( 'known', 'noclasses' )
1812                 );
1813         }
1814
1815         function watchPageLinksLink() {
1816                 global $wgOut;
1817                 if ( ! $wgOut->isArticleRelated() ) {
1818                         return '(' . wfMsg( 'notanarticle' ) . ')';
1819                 } else {
1820                         return $this->link(
1821                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $this->mTitle->getPrefixedDBkey() ),
1822                                 wfMsg( 'recentchangeslinked-toolbox' ),
1823                                 array(),
1824                                 array(),
1825                                 array( 'known', 'noclasses' )
1826                         );
1827                 }
1828         }
1829
1830         function trackbackLink() {
1831                 return '<a href="' . $this->mTitle->trackbackURL() . '">'
1832                         . wfMsg( 'trackbacklink' ) . '</a>';
1833         }
1834
1835         function otherLanguages() {
1836                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1837
1838                 if ( $wgHideInterlanguageLinks ) {
1839                         return '';
1840                 }
1841
1842                 $a = $wgOut->getLanguageLinks();
1843                 if ( 0 == count( $a ) ) {
1844                         return '';
1845                 }
1846
1847                 $s = wfMsg( 'otherlanguages' ) . wfMsg( 'colon-separator' );
1848                 $first = true;
1849                 if( $wgContLang->isRTL() ) $s .= '<span dir="LTR">';
1850                 foreach( $a as $l ) {
1851                         if ( !$first ) {
1852                                 $s .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
1853                         }
1854                         $first = false;
1855
1856                         $nt = Title::newFromText( $l );
1857                         $url = $nt->escapeFullURL();
1858                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1859
1860                         if ( '' == $text ) { $text = $l; }
1861                         $style = $this->getExternalLinkAttributes();
1862                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1863                 }
1864                 if( $wgContLang->isRTL() ) $s .= '</span>';
1865                 return $s;
1866         }
1867
1868         function talkLink() {
1869                 if ( NS_SPECIAL == $this->mTitle->getNamespace() ) {
1870                         # No discussion links for special pages
1871                         return '';
1872                 }
1873
1874                 $linkOptions = array();
1875
1876                 if( $this->mTitle->isTalkPage() ) {
1877                         $link = $this->mTitle->getSubjectPage();
1878                         switch( $link->getNamespace() ) {
1879                                 case NS_MAIN:
1880                                         $text = wfMsg( 'articlepage' );
1881                                         break;
1882                                 case NS_USER:
1883                                         $text = wfMsg( 'userpage' );
1884                                         break;
1885                                 case NS_PROJECT:
1886                                         $text = wfMsg( 'projectpage' );
1887                                         break;
1888                                 case NS_FILE:
1889                                         $text = wfMsg( 'imagepage' );
1890                                         # Make link known if image exists, even if the desc. page doesn't.
1891                                         if( wfFindFile( $link ) )
1892                                                 $linkOptions[] = 'known';
1893                                         break;
1894                                 case NS_MEDIAWIKI:
1895                                         $text = wfMsg( 'mediawikipage' );
1896                                         break;
1897                                 case NS_TEMPLATE:
1898                                         $text = wfMsg( 'templatepage' );
1899                                         break;
1900                                 case NS_HELP:
1901                                         $text = wfMsg( 'viewhelppage' );
1902                                         break;
1903                                 case NS_CATEGORY:
1904                                         $text = wfMsg( 'categorypage' );
1905                                         break;
1906                                 default:
1907                                         $text = wfMsg( 'articlepage' );
1908                         }
1909                 } else {
1910                         $link = $this->mTitle->getTalkPage();
1911                         $text = wfMsg( 'talkpage' );
1912                 }
1913
1914                 $s = $this->link( $link, $text, array(), array(), $linkOptions );
1915
1916                 return $s;
1917         }
1918
1919         function commentLink() {
1920                 global $wgOut;
1921
1922                 if ( $this->mTitle->getNamespace() == NS_SPECIAL ) {
1923                         return '';
1924                 }
1925
1926                 # __NEWSECTIONLINK___ changes behaviour here
1927                 # If it is present, the link points to this page, otherwise
1928                 # it points to the talk page
1929                 if( $this->mTitle->isTalkPage() ) {
1930                         $title = $this->mTitle;
1931                 } elseif( $wgOut->showNewSectionLink() ) {
1932                         $title = $this->mTitle;
1933                 } else {
1934                         $title = $this->mTitle->getTalkPage();
1935                 }
1936
1937                 return $this->link(
1938                         $title,
1939                         wfMsg( 'postcomment' ),
1940                         array(),
1941                         array(
1942                                 'action' => 'edit',
1943                                 'section' => 'new'
1944                         ),
1945                         array( 'known', 'noclasses' )
1946                 );
1947         }
1948
1949         /* these are used extensively in SkinTemplate, but also some other places */
1950         static function makeMainPageUrl( $urlaction = '' ) {
1951                 $title = Title::newMainPage();
1952                 self::checkTitle( $title, '' );
1953                 return $title->getLocalURL( $urlaction );
1954         }
1955
1956         static function makeSpecialUrl( $name, $urlaction = '' ) {
1957                 $title = SpecialPage::getTitleFor( $name );
1958                 return $title->getLocalURL( $urlaction );
1959         }
1960
1961         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1962                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1963                 return $title->getLocalURL( $urlaction );
1964         }
1965
1966         static function makeI18nUrl( $name, $urlaction = '' ) {
1967                 $title = Title::newFromText( wfMsgForContent( $name ) );
1968                 self::checkTitle( $title, $name );
1969                 return $title->getLocalURL( $urlaction );
1970         }
1971
1972         static function makeUrl( $name, $urlaction = '' ) {
1973                 $title = Title::newFromText( $name );
1974                 self::checkTitle( $title, $name );
1975                 return $title->getLocalURL( $urlaction );
1976         }
1977
1978         # If url string starts with http, consider as external URL, else
1979         # internal
1980         static function makeInternalOrExternalUrl( $name ) {
1981                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1982                         return $name;
1983                 } else {
1984                         return self::makeUrl( $name );
1985                 }
1986         }
1987
1988         # this can be passed the NS number as defined in Language.php
1989         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1990                 $title = Title::makeTitleSafe( $namespace, $name );
1991                 self::checkTitle( $title, $name );
1992                 return $title->getLocalURL( $urlaction );
1993         }
1994
1995         /* these return an array with the 'href' and boolean 'exists' */
1996         static function makeUrlDetails( $name, $urlaction = '' ) {
1997                 $title = Title::newFromText( $name );
1998                 self::checkTitle( $title, $name );
1999                 return array(
2000                         'href' => $title->getLocalURL( $urlaction ),
2001                         'exists' => $title->getArticleID() != 0 ? true : false
2002                 );
2003         }
2004
2005         /**
2006          * Make URL details where the article exists (or at least it's convenient to think so)
2007          */
2008         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
2009                 $title = Title::newFromText( $name );
2010                 self::checkTitle( $title, $name );
2011                 return array(
2012                         'href' => $title->getLocalURL( $urlaction ),
2013                         'exists' => true
2014                 );
2015         }
2016
2017         # make sure we have some title to operate on
2018         static function checkTitle( &$title, $name ) {
2019                 if( !is_object( $title ) ) {
2020                         $title = Title::newFromText( $name );
2021                         if( !is_object( $title ) ) {
2022                                 $title = Title::newFromText( '--error: link target missing--' );
2023                         }
2024                 }
2025         }
2026
2027         /**
2028          * Build an array that represents the sidebar(s), the navigation bar among them
2029          *
2030          * @return array
2031          */
2032         function buildSidebar() {
2033                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
2034                 global $wgLang;
2035                 wfProfileIn( __METHOD__ );
2036
2037                 $key = wfMemcKey( 'sidebar', $wgLang->getCode() );
2038
2039                 if ( $wgEnableSidebarCache ) {
2040                         $cachedsidebar = $parserMemc->get( $key );
2041                         if ( $cachedsidebar ) {
2042                                 wfProfileOut( __METHOD__ );
2043                                 return $cachedsidebar;
2044                         }
2045                 }
2046
2047                 $bar = array();
2048                 $this->addToSidebar( &$bar, 'sidebar' );
2049
2050                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
2051                 if ( $wgEnableSidebarCache ) $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
2052                 wfProfileOut( __METHOD__ );
2053                 return $bar;
2054         }
2055         /**
2056          * Add content from a sidebar system message
2057          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
2058          *
2059          * @param &$bar array
2060          * @param $message String
2061          */
2062         function addToSidebar( &$bar, $message ) {
2063                 $lines = explode( "\n", wfMsgForContent( $message ) );
2064                 $heading = '';
2065                 foreach( $lines as $line ) {
2066                         if( strpos( $line, '*' ) !== 0 )
2067                                 continue;
2068                         if( strpos( $line, '**') !== 0 ) {
2069                                 $heading = trim( $line, '* ' );
2070                                 if( !array_key_exists( $heading, $bar ) ) $bar[$heading] = array();
2071                         } else {
2072                                 if( strpos( $line, '|' ) !== false ) { // sanity check
2073                                         $line = array_map( 'trim', explode( '|', trim( $line, '* ' ), 2 ) );
2074                                         $link = wfMsgForContent( $line[0] );
2075                                         if( $link == '-' )
2076                                                 continue;
2077
2078                                         $text = wfMsgExt( $line[1], 'parsemag' );
2079                                         if( wfEmptyMsg( $line[1], $text ) )
2080                                                 $text = $line[1];
2081                                         if( wfEmptyMsg( $line[0], $link ) )
2082                                                 $link = $line[0];
2083
2084                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
2085                                                 $href = $link;
2086                                         } else {
2087                                                 $title = Title::newFromText( $link );
2088                                                 if ( $title ) {
2089                                                         $title = $title->fixSpecialName();
2090                                                         $href = $title->getLocalURL();
2091                                                 } else {
2092                                                         $href = 'INVALID-TITLE';
2093                                                 }
2094                                         }
2095
2096                                         $bar[$heading][] = array(
2097                                                 'text' => $text,
2098                                                 'href' => $href,
2099                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
2100                                                 'active' => false
2101                                         );
2102                                 } else { continue; }
2103                         }
2104                 }
2105         }
2106
2107         /**
2108          * Should we include common/wikiprintable.css?  Skins that have their own
2109          * print stylesheet should override this and return false.  (This is an
2110          * ugly hack to get Monobook to play nicely with
2111          * OutputPage::headElement().)
2112          *
2113          * @return bool
2114          */
2115         public function commonPrintStylesheet() {
2116                 return true;
2117         }
2118 }