includes/Skin.php

   1 <?php
   2 if ( ! defined( 'MEDIAWIKI' ) )
   3         die( 1 );
   4
   5 /**
   6  *
   7  * @package MediaWiki
   8  * @subpackage Skins
   9  */
  10
  11 # See skin.txt
  12
  13 /**
  14  * The main skin class that provide methods and properties for all other skins.
  15  * This base class is also the "Standard" skin.
  16  * @package MediaWiki
  17  */
  18 class Skin extends Linker {
  19         /**#@+
  20          * @private
  21          */
  22         var $lastdate, $lastline;
  23         var $rc_cache ; # Cache for Enhanced Recent Changes
  24         var $rcCacheIndex ; # Recent Changes Cache Counter for visibility toggle
  25         var $rcMoveIndex;
  26         /**#@-*/
  27
  28         /** Constructor, call parent constructor */
  29         function Skin() { parent::Linker(); }
  30
  31         /**
  32          * Fetch the set of available skins.
  33          * @return array of strings
  34          * @static
  35          */
  36         static function &getSkinNames() {
  37                 global $wgValidSkinNames;
  38                 static $skinsInitialised = false;
  39                 if ( !$skinsInitialised ) {
  40                         # Get a list of available skins
  41                         # Build using the regular expression '^(.*).php$'
  42                         # Array keys are all lower case, array value keep the case used by filename
  43                         #
  44                         wfProfileIn( __METHOD__ . '-init' );
  45                         global $wgStyleDirectory;
  46                         $skinDir = dir( $wgStyleDirectory );
  47
  48                         # while code from www.php.net
  49                         while (false !== ($file = $skinDir->read())) {
  50                                 // Skip non-PHP files, hidden files, and '.dep' includes
  51                                 if(preg_match('/^([^.]*)\.php$/',$file, $matches)) {
  52                                         $aSkin = $matches[1];
  53                                         $wgValidSkinNames[strtolower($aSkin)] = $aSkin;
  54                                 }
  55                         }
  56                         $skinDir->close();
  57                         $skinsInitialised = true;
  58                         wfProfileOut( __METHOD__ . '-init' );
  59                 }
  60                 return $wgValidSkinNames;
  61         }
  62
  63         /**
  64          * Normalize a skin preference value to a form that can be loaded.
  65          * If a skin can't be found, it will fall back to the configured
  66          * default (or the old 'Classic' skin if that's broken).
  67          * @param string $key
  68          * @return string
  69          * @static
  70          */
  71         static function normalizeKey( $key ) {
  72                 global $wgDefaultSkin;
  73                 $skinNames = Skin::getSkinNames();
  74
  75                 if( $key == '' ) {
  76                         // Don't return the default immediately;
  77                         // in a misconfiguration we need to fall back.
  78                         $key = $wgDefaultSkin;
  79                 }
  80
  81                 if( isset( $skinNames[$key] ) ) {
  82                         return $key;
  83                 }
  84
  85                 // Older versions of the software used a numeric setting
  86                 // in the user preferences.
  87                 $fallback = array(
  88                         0 => $wgDefaultSkin,
  89                         1 => 'nostalgia',
  90                         2 => 'cologneblue' );
  91
  92                 if( isset( $fallback[$key] ) ){
  93                         $key = $fallback[$key];
  94                 }
  95
  96                 if( isset( $skinNames[$key] ) ) {
  97                         return $key;
  98                 } else {
  99                         // The old built-in skin
 100                         return 'standard';
 101                 }
 102         }
 103
 104         /**
 105          * Factory method for loading a skin of a given type
 106          * @param string $key 'monobook', 'standard', etc
 107          * @return Skin
 108          * @static
 109          */
 110         static function &newFromKey( $key ) {
 111                 global $wgStyleDirectory;
 112
 113                 $key = Skin::normalizeKey( $key );
 114
 115                 $skinNames = Skin::getSkinNames();
 116                 $skinName = $skinNames[$key];
 117
 118                 # Grab the skin class and initialise it.
 119                 wfSuppressWarnings();
 120                 // Preload base classes to work around APC/PHP5 bug
 121                 include_once( "{$wgStyleDirectory}/{$skinName}.deps.php" );
 122                 wfRestoreWarnings();
 123                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 124
 125                 # Check if we got if not failback to default skin
 126                 $className = 'Skin'.$skinName;
 127                 if( !class_exists( $className ) ) {
 128                         # DO NOT die if the class isn't found. This breaks maintenance
 129                         # scripts and can cause a user account to be unrecoverable
 130                         # except by SQL manipulation if a previously valid skin name
 131                         # is no longer valid.
 132                         wfDebug( "Skin class does not exist: $className\n" );
 133                         $className = 'SkinStandard';
 134                         require_once( "{$wgStyleDirectory}/Standard.php" );
 135                 }
 136                 $skin = new $className;
 137                 return $skin;
 138         }
 139
 140         /** @return string path to the skin stylesheet */
 141         function getStylesheet() {
 142                 return 'common/wikistandard.css?1';
 143         }
 144
 145         /** @return string skin name */
 146         function getSkinName() {
 147                 return 'standard';
 148         }
 149
 150         function qbSetting() {
 151                 global $wgOut, $wgUser;
 152
 153                 if ( $wgOut->isQuickbarSuppressed() ) { return 0; }
 154                 $q = $wgUser->getOption( 'quickbar' );
 155                 if ( '' == $q ) { $q = 0; }
 156                 return $q;
 157         }
 158
 159         function initPage( &$out ) {
 160                 global $wgFavicon, $wgScriptPath;
 161
 162                 $fname = 'Skin::initPage';
 163                 wfProfileIn( $fname );
 164
 165                 if( false !== $wgFavicon ) {
 166                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 167                 }
 168
 169                 # OpenSearch description link
 170                 $out->addLink( array(
 171                         'rel' => 'search',
 172                         'type' => 'application/opensearchdescription+xml',
 173                         'href' => "$wgScriptPath/opensearch_desc.php"
 174                 ));
 175
 176                 $this->addMetadataLinks($out);
 177
 178                 $this->mRevisionId = $out->mRevisionId;
 179
 180                 $this->preloadExistence();
 181
 182                 wfProfileOut( $fname );
 183         }
 184
 185         /**
 186          * Preload the existence of three commonly-requested pages in a single query
 187          */
 188         function preloadExistence() {
 189                 global $wgUser, $wgTitle;
 190
 191                 if ( $wgTitle->isTalkPage() ) {
 192                         $otherTab = $wgTitle->getSubjectPage();
 193                 } else {
 194                         $otherTab = $wgTitle->getTalkPage();
 195                 }
 196                 $lb = new LinkBatch( array(
 197                         $wgUser->getUserPage(),
 198                         $wgUser->getTalkPage(),
 199                         $otherTab
 200                 ));
 201                 $lb->execute();
 202         }
 203
 204         function addMetadataLinks( &$out ) {
 205                 global $wgTitle, $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 206                 global $wgRightsPage, $wgRightsUrl;
 207
 208                 if( $out->isArticleRelated() ) {
 209                         # note: buggy CC software only reads first "meta" link
 210                         if( $wgEnableCreativeCommonsRdf ) {
 211                                 $out->addMetadataLink( array(
 212                                         'title' => 'Creative Commons',
 213                                         'type' => 'application/rdf+xml',
 214                                         'href' => $wgTitle->getLocalURL( 'action=creativecommons') ) );
 215                         }
 216                         if( $wgEnableDublinCoreRdf ) {
 217                                 $out->addMetadataLink( array(
 218                                         'title' => 'Dublin Core',
 219                                         'type' => 'application/rdf+xml',
 220                                         'href' => $wgTitle->getLocalURL( 'action=dublincore' ) ) );
 221                         }
 222                 }
 223                 $copyright = '';
 224                 if( $wgRightsPage ) {
 225                         $copy = Title::newFromText( $wgRightsPage );
 226                         if( $copy ) {
 227                                 $copyright = $copy->getLocalURL();
 228                         }
 229                 }
 230                 if( !$copyright && $wgRightsUrl ) {
 231                         $copyright = $wgRightsUrl;
 232                 }
 233                 if( $copyright ) {
 234                         $out->addLink( array(
 235                                 'rel' => 'copyright',
 236                                 'href' => $copyright ) );
 237                 }
 238         }
 239
 240         function outputPage( &$out ) {
 241                 global $wgDebugComments;
 242
 243                 wfProfileIn( 'Skin::outputPage' );
 244                 $this->initPage( $out );
 245
 246                 $out->out( $out->headElement() );
 247
 248                 $out->out( "\n<body" );
 249                 $ops = $this->getBodyOptions();
 250                 foreach ( $ops as $name => $val ) {
 251                         $out->out( " $name='$val'" );
 252                 }
 253                 $out->out( ">\n" );
 254                 if ( $wgDebugComments ) {
 255                         $out->out( "<!-- Wiki debugging output:\n" .
 256                           $out->mDebugtext . "-->\n" );
 257                 }
 258
 259                 $out->out( $this->beforeContent() );
 260
 261                 $out->out( $out->mBodytext . "\n" );
 262
 263                 $out->out( $this->afterContent() );
 264
 265                 $out->out( $this->bottomScripts() );
 266
 267                 $out->out( $out->reportTime() );
 268
 269                 $out->out( "\n</body></html>" );
 270         }
 271
 272         static function makeGlobalVariablesScript( $data ) {
 273                 $r = '<script type= "' . $data['jsmimetype'] . '">
 274                         var skin = "' . Xml::escapeJsString( $data['skinname'] ) . '";
 275                         var stylepath = "' . Xml::escapeJsString( $data['stylepath'] ) . '";
 276
 277                         var wgArticlePath = "' . Xml::escapeJsString( $data['articlepath'] ) . '";
 278                         var wgScriptPath = "' . Xml::escapeJsString( $data['scriptpath'] ) . '";
 279                         var wgServer = "' . Xml::escapeJsString( $data['serverurl'] ) . '";
 280
 281                         var wgCanonicalNamespace = "' . Xml::escapeJsString( $data['nscanonical'] ) . '";
 282                         var wgNamespaceNumber = ' . (int)$data['nsnumber'] . ';
 283                         var wgPageName = "' . Xml::escapeJsString( $data['titleprefixeddbkey'] ) . '";
 284                         var wgTitle = "' . Xml::escapeJsString( $data['titletext'] ) . '";
 285                         var wgArticleId = ' . (int)$data['articleid'] . ';
 286                         var wgIsArticle = ' . ( $data['isarticle'] ? 'true' : 'false' ) . ';
 287
 288                         var wgUserName = ' . ( $data['username'] == NULL ? 'null' : ( '"' . Xml::escapeJsString( $data['username'] ) . '"' ) ) . ';
 289                         var wgUserLanguage = "' . Xml::escapeJsString( $data['userlang'] ) . '";
 290                         var wgContentLanguage = "' . Xml::escapeJsString( $data['lang'] ) . '";
 291                 </script>
 292                 ';
 293
 294                 return $r;
 295         }
 296
 297         function getHeadScripts() {
 298                 global $wgStylePath, $wgUser, $wgAllowUserJs, $wgJsMimeType;
 299                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 300                 global $wgTitle, $wgCanonicalNamespaceNames, $wgOut;
 301
 302                 $nsname = @$wgCanonicalNamespaceNames[ $wgTitle->getNamespace() ];
 303                 if ( $nsname === NULL ) $nsname = $wgTitle->getNsText();
 304
 305                 $vars = array(
 306                         'jsmimetype' => $wgJsMimeType,
 307                         'skinname' => $this->getSkinName(),
 308                         'stylepath' => $wgStylePath,
 309                         'articlepath' => $wgArticlePath,
 310                         'scriptpath' => $wgScriptPath,
 311                         'serverurl' => $wgServer,
 312                         'nscanonical' => $nsname,
 313                         'nsnumber' => $wgTitle->getNamespace(),
 314                         'titleprefixeddbkey' => $wgTitle->getPrefixedDBKey(),
 315                         'titletext' => $wgTitle->getText(),
 316                         'articleid' => $wgTitle->getArticleId(),
 317                         'isarticle' => $wgOut->isArticle(),
 318                         'username' => $wgUser->isAnon() ? NULL : $wgUser->getName(),
 319                         'userlang' => $wgLang->getCode(),
 320                         'lang' => $wgContLang->getCode(),
 321                 );
 322
 323                 $r = self::makeGlobalVariablesScript( $vars );
 324
 325                 $r .= "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js\"></script>\n";
 326                 if( $wgAllowUserJs && $wgUser->isLoggedIn() ) {
 327                         $userpage = $wgUser->getUserPage();
 328                         $userjs = htmlspecialchars( self::makeUrl(
 329                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 330                                 'action=raw&ctype='.$wgJsMimeType));
 331                         $r .= '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>\n";
 332                 }
 333                 return $r;
 334         }
 335
 336         /**
 337          * To make it harder for someone to slip a user a fake
 338          * user-JavaScript or user-CSS preview, a random token
 339          * is associated with the login session. If it's not
 340          * passed back with the preview request, we won't render
 341          * the code.
 342          *
 343          * @param string $action
 344          * @return bool
 345          * @private
 346          */
 347         function userCanPreview( $action ) {
 348                 global $wgTitle, $wgRequest, $wgUser;
 349
 350                 if( $action != 'submit' )
 351                         return false;
 352                 if( !$wgRequest->wasPosted() )
 353                         return false;
 354                 if( !$wgTitle->userCanEditCssJsSubpage() )
 355                         return false;
 356                 return $wgUser->matchEditToken(
 357                         $wgRequest->getVal( 'wpEditToken' ) );
 358         }
 359
 360         # get the user/site-specific stylesheet, SkinTemplate loads via RawPage.php (settings are cached that way)
 361         function getUserStylesheet() {
 362                 global $wgStylePath, $wgRequest, $wgContLang, $wgSquidMaxage;
 363                 $sheet = $this->getStylesheet();
 364                 $action = $wgRequest->getText('action');
 365                 $s = "@import \"$wgStylePath/$sheet\";\n";
 366                 if($wgContLang->isRTL()) $s .= "@import \"$wgStylePath/common/common_rtl.css\";\n";
 367
 368                 $query = "usemsgcache=yes&action=raw&ctype=text/css&smaxage=$wgSquidMaxage";
 369                 $s .= '@import "' . self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) . "\";\n" .
 370                         '@import "' . self::makeNSUrl( ucfirst( $this->getSkinName() . '.css' ), $query, NS_MEDIAWIKI ) . "\";\n";
 371
 372                 $s .= $this->doGetUserStyles();
 373                 return $s."\n";
 374         }
 375
 376         /**
 377          * placeholder, returns generated js in monobook
 378          */
 379         function getUserJs() { return; }
 380
 381         /**
 382          * Return html code that include User stylesheets
 383          */
 384         function getUserStyles() {
 385                 $s = "<style type='text/css'>\n";
 386                 $s .= "/*/*/ /*<![CDATA[*/\n"; # <-- Hide the styles from Netscape 4 without hiding them from IE/Mac
 387                 $s .= $this->getUserStylesheet();
 388                 $s .= "/*]]>*/ /* */\n";
 389                 $s .= "</style>\n";
 390                 return $s;
 391         }
 392
 393         /**
 394          * Some styles that are set by user through the user settings interface.
 395          */
 396         function doGetUserStyles() {
 397                 global $wgUser, $wgUser, $wgRequest, $wgTitle, $wgAllowUserCss;
 398
 399                 $s = '';
 400
 401                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) { # logged in
 402                         if($wgTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getText( 'action' ) ) ) {
 403                                 $s .= $wgRequest->getText('wpTextbox1');
 404                         } else {
 405                                 $userpage = $wgUser->getUserPage();
 406                                 $s.= '@import "'.self::makeUrl(
 407                                         $userpage->getPrefixedText().'/'.$this->getSkinName().'.css',
 408                                         'action=raw&ctype=text/css').'";'."\n";
 409                         }
 410                 }
 411
 412                 return $s . $this->reallyDoGetUserStyles();
 413         }
 414
 415         function reallyDoGetUserStyles() {
 416                 global $wgUser;
 417                 $s = '';
 418                 if (($undopt = $wgUser->getOption("underline")) != 2) {
 419                         $underline = $undopt ? 'underline' : 'none';
 420                         $s .= "a { text-decoration: $underline; }\n";
 421                 }
 422                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 423                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 424                 } else {
 425                         $s .= <<<END
 426 a.new, #quickbar a.new,
 427 a.stub, #quickbar a.stub {
 428         color: inherit;
 429         text-decoration: inherit;
 430 }
 431 a.new:after, #quickbar a.new:after {
 432         content: "?";
 433         color: #CC2200;
 434         text-decoration: $underline;
 435 }
 436 a.stub:after, #quickbar a.stub:after {
 437         content: "!";
 438         color: #772233;
 439         text-decoration: $underline;
 440 }
 441 END;
 442                 }
 443                 if( $wgUser->getOption( 'justify' ) ) {
 444                         $s .= "#article, #bodyContent { text-align: justify; }\n";
 445                 }
 446                 if( !$wgUser->getOption( 'showtoc' ) ) {
 447                         $s .= "#toc { display: none; }\n";
 448                 }
 449                 if( !$wgUser->getOption( 'editsection' ) ) {
 450                         $s .= ".editsection { display: none; }\n";
 451                 }
 452                 return $s;
 453         }
 454
 455         function getBodyOptions() {
 456                 global $wgUser, $wgTitle, $wgOut, $wgRequest, $wgContLang;
 457
 458                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 459
 460                 if ( 0 != $wgTitle->getNamespace() ) {
 461                         $a = array( 'bgcolor' => '#ffffec' );
 462                 }
 463                 else $a = array( 'bgcolor' => '#FFFFFF' );
 464                 if($wgOut->isArticle() && $wgUser->getOption('editondblclick') &&
 465                   $wgTitle->userCanEdit() ) {
 466                         $t = wfMsg( 'editthispage' );
 467                         $s = $wgTitle->getFullURL( $this->editUrlOptions() );
 468                         $s = 'document.location = "' .wfEscapeJSString( $s ) .'";';
 469                         $a += array ('ondblclick' => $s);
 470
 471                 }
 472                 $a['onload'] = $wgOut->getOnloadHandler();
 473                 if( $wgUser->getOption( 'editsectiononrightclick' ) ) {
 474                         if( $a['onload'] != '' ) {
 475                                 $a['onload'] .= ';';
 476                         }
 477                         $a['onload'] .= 'setupRightClickEdit()';
 478                 }
 479                 $a['class'] = 'ns-'.$wgTitle->getNamespace().' '.($wgContLang->isRTL() ? "rtl" : "ltr");
 480                 return $a;
 481         }
 482
 483         /**
 484          * URL to the logo
 485          */
 486         function getLogo() {
 487                 global $wgLogo;
 488                 return $wgLogo;
 489         }
 490
 491         /**
 492          * This will be called immediately after the <body> tag.  Split into
 493          * two functions to make it easier to subclass.
 494          */
 495         function beforeContent() {
 496                 return $this->doBeforeContent();
 497         }
 498
 499         function doBeforeContent() {
 500                 global $wgContLang;
 501                 $fname = 'Skin::doBeforeContent';
 502                 wfProfileIn( $fname );
 503
 504                 $s = '';
 505                 $qb = $this->qbSetting();
 506
 507                 if( $langlinks = $this->otherLanguages() ) {
 508                         $rows = 2;
 509                         $borderhack = '';
 510                 } else {
 511                         $rows = 1;
 512                         $langlinks = false;
 513                         $borderhack = 'class="top"';
 514                 }
 515
 516                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 517                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 518
 519                 $shove = ($qb != 0);
 520                 $left = ($qb == 1 || $qb == 3);
 521                 if($wgContLang->isRTL()) $left = !$left;
 522
 523                 if ( !$shove ) {
 524                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 525                           $this->logoText() . '</td>';
 526                 } elseif( $left ) {
 527                         $s .= $this->getQuickbarCompensator( $rows );
 528                 }
 529                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 530                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 531
 532                 $s .= $this->topLinks() ;
 533                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 534
 535                 $r = $wgContLang->isRTL() ? "left" : "right";
 536                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 537                 $s .= $this->nameAndLogin();
 538                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 539
 540                 if ( $langlinks ) {
 541                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 542                 }
 543
 544                 if ( $shove && !$left ) { # Right
 545                         $s .= $this->getQuickbarCompensator( $rows );
 546                 }
 547                 $s .= "</tr>\n</table>\n</div>\n";
 548                 $s .= "\n<div id='article'>\n";
 549
 550                 $notice = wfGetSiteNotice();
 551                 if( $notice ) {
 552                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 553                 }
 554                 $s .= $this->pageTitle();
 555                 $s .= $this->pageSubtitle() ;
 556                 $s .= $this->getCategories();
 557                 wfProfileOut( $fname );
 558                 return $s;
 559         }
 560
 561
 562         function getCategoryLinks () {
 563                 global $wgOut, $wgTitle, $wgUseCategoryBrowser;
 564                 global $wgContLang;
 565
 566                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 567
 568                 # Separator
 569                 $sep = wfMsgHtml( 'catseparator' );
 570
 571                 // Use Unicode bidi embedding override characters,
 572                 // to make sure links don't smash each other up in ugly ways.
 573                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 574                 $embed = "<span dir='$dir'>";
 575                 $pop = '</span>';
 576                 $t = $embed . implode ( "{$pop} {$sep} {$embed}" , $wgOut->mCategoryLinks ) . $pop;
 577
 578                 $msg = wfMsgExt('categories', array('parsemag', 'escape'), count( $wgOut->mCategoryLinks ));
 579                 $s = $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Categories' ),
 580                         $msg, 'article=' . urlencode( $wgTitle->getPrefixedDBkey() ) )
 581                         . ': ' . $t;
 582
 583                 # optional 'dmoz-like' category browser. Will be shown under the list
 584                 # of categories an article belong to
 585                 if($wgUseCategoryBrowser) {
 586                         $s .= '<br /><hr />';
 587
 588                         # get a big array of the parents tree
 589                         $parenttree = $wgTitle->getParentCategoryTree();
 590                         # Skin object passed by reference cause it can not be
 591                         # accessed under the method subfunction drawCategoryBrowser
 592                         $tempout = explode("\n", Skin::drawCategoryBrowser($parenttree, $this) );
 593                         # Clean out bogus first entry and sort them
 594                         unset($tempout[0]);
 595                         asort($tempout);
 596                         # Output one per line
 597                         $s .= implode("<br />\n", $tempout);
 598                 }
 599
 600                 return $s;
 601         }
 602
 603         /** Render the array as a serie of links.
 604          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 605          * @param &skin Object: skin passed by reference
 606          * @return String separated by &gt;, terminate with "\n"
 607          */
 608         function drawCategoryBrowser($tree, &$skin) {
 609                 $return = '';
 610                 foreach ($tree as $element => $parent) {
 611                         if (empty($parent)) {
 612                                 # element start a new list
 613                                 $return .= "\n";
 614                         } else {
 615                                 # grab the others elements
 616                                 $return .= Skin::drawCategoryBrowser($parent, $skin) . ' &gt; ';
 617                         }
 618                         # add our current element to the list
 619                         $eltitle = Title::NewFromText($element);
 620                         $return .=  $skin->makeLinkObj( $eltitle, $eltitle->getText() ) ;
 621                 }
 622                 return $return;
 623         }
 624
 625         function getCategories() {
 626                 $catlinks=$this->getCategoryLinks();
 627                 if(!empty($catlinks)) {
 628                         return "<p class='catlinks'>{$catlinks}</p>";
 629                 }
 630         }
 631
 632         function getQuickbarCompensator( $rows = 1 ) {
 633                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 634         }
 635
 636         /**
 637          * This gets called shortly before the \</body\> tag.
 638          * @return String HTML to be put before \</body\>
 639          */
 640         function afterContent() {
 641                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 642                 return $printfooter . $this->doAfterContent();
 643         }
 644
 645         /**
 646          * This gets called shortly before the \</body\> tag.
 647          * @return String HTML-wrapped JS code to be put before \</body\>
 648          */
 649         function bottomScripts() {
 650                 global $wgJsMimeType;
 651                 return "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 652         }
 653
 654         /** @return string Retrievied from HTML text */
 655         function printSource() {
 656                 global $wgTitle;
 657                 $url = htmlspecialchars( $wgTitle->getFullURL() );
 658                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 659         }
 660
 661         function printFooter() {
 662                 return "<p>" .  $this->printSource() .
 663                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 664         }
 665
 666         /** overloaded by derived classes */
 667         function doAfterContent() { }
 668
 669         function pageTitleLinks() {
 670                 global $wgOut, $wgTitle, $wgUser, $wgRequest;
 671
 672                 extract( $wgRequest->getValues( 'oldid', 'diff' ) );
 673                 $action = $wgRequest->getText( 'action' );
 674
 675                 $s = $this->printableLink();
 676                 $disclaimer = $this->disclaimerLink(); # may be empty
 677                 if( $disclaimer ) {
 678                         $s .= ' | ' . $disclaimer;
 679                 }
 680                 $privacy = $this->privacyLink(); # may be empty too
 681                 if( $privacy ) {
 682                         $s .= ' | ' . $privacy;
 683                 }
 684
 685                 if ( $wgOut->isArticleRelated() ) {
 686                         if ( $wgTitle->getNamespace() == NS_IMAGE ) {
 687                                 $name = $wgTitle->getDBkey();
 688                                 $image = new Image( $wgTitle );
 689                                 if( $image->exists() ) {
 690                                         $link = htmlspecialchars( $image->getURL() );
 691                                         $style = $this->getInternalLinkAttributes( $link, $name );
 692                                         $s .= " | <a href=\"{$link}\"{$style}>{$name}</a>";
 693                                 }
 694                         }
 695                 }
 696                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 697                         $s .= ' | ' . $this->makeKnownLinkObj( $wgTitle,
 698                                         wfMsg( 'currentrev' ) );
 699                 }
 700
 701                 if ( $wgUser->getNewtalk() ) {
 702                         # do not show "You have new messages" text when we are viewing our
 703                         # own talk page
 704                         if( !$wgTitle->equals( $wgUser->getTalkPage() ) ) {
 705                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessageslink' ), 'redirect=no' );
 706                                 $dl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessagesdifflink' ), 'diff=cur' );
 707                                 $s.= ' | <strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 708                                 # disable caching
 709                                 $wgOut->setSquidMaxage(0);
 710                                 $wgOut->enableClientCache(false);
 711                         }
 712                 }
 713
 714                 $undelete = $this->getUndeleteLink();
 715                 if( !empty( $undelete ) ) {
 716                         $s .= ' | '.$undelete;
 717                 }
 718                 return $s;
 719         }
 720
 721         function getUndeleteLink() {
 722                 global $wgUser, $wgTitle, $wgContLang, $action;
 723                 if(     $wgUser->isAllowed( 'deletedhistory' ) &&
 724                         (($wgTitle->getArticleId() == 0) || ($action == "history")) &&
 725                         ($n = $wgTitle->isDeleted() ) )
 726                 {
 727                         if ( $wgUser->isAllowed( 'delete' ) ) {
 728                                 $msg = 'thisisdeleted';
 729                         } else {
 730                                 $msg = 'viewdeleted';
 731                         }
 732                         return wfMsg( $msg,
 733                                 $this->makeKnownLink(
 734                                         $wgContLang->SpecialPage( 'Undelete/' . $wgTitle->getPrefixedDBkey() ),
 735                                         wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $n ) ) );
 736                 }
 737                 return '';
 738         }
 739
 740         function printableLink() {
 741                 global $wgOut, $wgFeedClasses, $wgRequest;
 742
 743                 $baseurl = $_SERVER['REQUEST_URI'];
 744                 if( strpos( '?', $baseurl ) == false ) {
 745                         $baseurl .= '?';
 746                 } else {
 747                         $baseurl .= '&';
 748                 }
 749                 $baseurl = htmlspecialchars( $baseurl );
 750                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
 751
 752                 $s = "<a href=\"$printurl\">" . wfMsg( 'printableversion' ) . '</a>';
 753                 if( $wgOut->isSyndicated() ) {
 754                         foreach( $wgFeedClasses as $format => $class ) {
 755                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
 756                                 $s .= " | <a href=\"$feedurl\">{$format}</a>";
 757                         }
 758                 }
 759                 return $s;
 760         }
 761
 762         function pageTitle() {
 763                 global $wgOut;
 764                 $s = '<h1 class="pagetitle">' . htmlspecialchars( $wgOut->getPageTitle() ) . '</h1>';
 765                 return $s;
 766         }
 767
 768         function pageSubtitle() {
 769                 global $wgOut;
 770
 771                 $sub = $wgOut->getSubtitle();
 772                 if ( '' == $sub ) {
 773                         global $wgExtraSubtitle;
 774                         $sub = wfMsg( 'tagline' ) . $wgExtraSubtitle;
 775                 }
 776                 $subpages = $this->subPageSubtitle();
 777                 $sub .= !empty($subpages)?"</p><p class='subpages'>$subpages":'';
 778                 $s = "<p class='subtitle'>{$sub}</p>\n";
 779                 return $s;
 780         }
 781
 782         function subPageSubtitle() {
 783                 global $wgOut,$wgTitle,$wgNamespacesWithSubpages;
 784                 $subpages = '';
 785                 if($wgOut->isArticle() && !empty($wgNamespacesWithSubpages[$wgTitle->getNamespace()])) {
 786                         $ptext=$wgTitle->getPrefixedText();
 787                         if(preg_match('/\//',$ptext)) {
 788                                 $links = explode('/',$ptext);
 789                                 $c = 0;
 790                                 $growinglink = '';
 791                                 foreach($links as $link) {
 792                                         $c++;
 793                                         if ($c<count($links)) {
 794                                                 $growinglink .= $link;
 795                                                 $getlink = $this->makeLink( $growinglink, htmlspecialchars( $link ) );
 796                                                 if(preg_match('/class="new"/i',$getlink)) { break; } # this is a hack, but it saves time
 797                                                 if ($c>1) {
 798                                                         $subpages .= ' | ';
 799                                                 } else  {
 800                                                         $subpages .= '&lt; ';
 801                                                 }
 802                                                 $subpages .= $getlink;
 803                                                 $growinglink .= '/';
 804                                         }
 805                                 }
 806                         }
 807                 }
 808                 return $subpages;
 809         }
 810
 811         function nameAndLogin() {
 812                 global $wgUser, $wgTitle, $wgLang, $wgContLang, $wgShowIPinHeader;
 813
 814                 $li = $wgContLang->specialPage( 'Userlogin' );
 815                 $lo = $wgContLang->specialPage( 'Userlogout' );
 816
 817                 $s = '';
 818                 if ( $wgUser->isAnon() ) {
 819                         if( $wgShowIPinHeader && isset( $_COOKIE[ini_get('session.name')] ) ) {
 820                                 $n = wfGetIP();
 821
 822                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 823                                   $wgLang->getNsText( NS_TALK ) );
 824
 825                                 $s .= $n . ' ('.$tl.')';
 826                         } else {
 827                                 $s .= wfMsg('notloggedin');
 828                         }
 829
 830                         $rt = $wgTitle->getPrefixedURL();
 831                         if ( 0 == strcasecmp( urlencode( $lo ), $rt ) ) {
 832                                 $q = '';
 833                         } else { $q = "returnto={$rt}"; }
 834
 835                         $s .= "\n<br />" . $this->makeKnownLinkObj(
 836                                 Title::makeTitle( NS_SPECIAL, 'Userlogin' ),
 837                                 wfMsg( 'login' ), $q );
 838                 } else {
 839                         $n = $wgUser->getName();
 840                         $rt = $wgTitle->getPrefixedURL();
 841                         $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 842                           $wgLang->getNsText( NS_TALK ) );
 843
 844                         $tl = " ({$tl})";
 845
 846                         $s .= $this->makeKnownLinkObj( $wgUser->getUserPage(),
 847                           $n ) . "{$tl}<br />" .
 848                           $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Userlogout' ), wfMsg( 'logout' ),
 849                           "returnto={$rt}" ) . ' | ' .
 850                           $this->specialLink( 'preferences' );
 851                 }
 852                 $s .= ' | ' . $this->makeKnownLink( wfMsgForContent( 'helppage' ),
 853                   wfMsg( 'help' ) );
 854
 855                 return $s;
 856         }
 857
 858         function getSearchLink() {
 859                 $searchPage =& Title::makeTitle( NS_SPECIAL, 'Search' );
 860                 return $searchPage->getLocalURL();
 861         }
 862
 863         function escapeSearchLink() {
 864                 return htmlspecialchars( $this->getSearchLink() );
 865         }
 866
 867         function searchForm() {
 868                 global $wgRequest;
 869                 $search = $wgRequest->getText( 'search' );
 870
 871                 $s = '<form name="search" class="inline" method="post" action="'
 872                   . $this->escapeSearchLink() . "\">\n"
 873                   . '<input type="text" name="search" size="19" value="'
 874                   . htmlspecialchars(substr($search,0,256)) . "\" />\n"
 875                   . '<input type="submit" name="go" value="' . wfMsg ('searcharticle') . '" />&nbsp;'
 876                   . '<input type="submit" name="fulltext" value="' . wfMsg ('searchbutton') . "\" />\n</form>";
 877
 878                 return $s;
 879         }
 880
 881         function topLinks() {
 882                 global $wgOut;
 883                 $sep = " |\n";
 884
 885                 $s = $this->mainPageLink() . $sep
 886                   . $this->specialLink( 'recentchanges' );
 887
 888                 if ( $wgOut->isArticleRelated() ) {
 889                         $s .=  $sep . $this->editThisPage()
 890                           . $sep . $this->historyLink();
 891                 }
 892                 # Many people don't like this dropdown box
 893                 #$s .= $sep . $this->specialPagesList();
 894
 895                 /* show links to different language variants */
 896                 global $wgDisableLangConversion, $wgContLang, $wgTitle;
 897                 $variants = $wgContLang->getVariants();
 898                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
 899                         foreach( $variants as $code ) {
 900                                 $varname = $wgContLang->getVariantname( $code );
 901                                 if( $varname == 'disable' )
 902                                         continue;
 903                                 $s .= ' | <a href="' . $wgTitle->getLocalUrl( 'variant=' . $code ) . '">' . $varname . '</a>';
 904                         }
 905                 }
 906
 907                 return $s;
 908         }
 909
 910         function bottomLinks() {
 911                 global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
 912                 $sep = " |\n";
 913
 914                 $s = '';
 915                 if ( $wgOut->isArticleRelated() ) {
 916                         $s .= '<strong>' . $this->editThisPage() . '</strong>';
 917                         if ( $wgUser->isLoggedIn() ) {
 918                                 $s .= $sep . $this->watchThisPage();
 919                         }
 920                         $s .= $sep . $this->talkLink()
 921                           . $sep . $this->historyLink()
 922                           . $sep . $this->whatLinksHere()
 923                           . $sep . $this->watchPageLinksLink();
 924
 925                         if ($wgUseTrackbacks)
 926                                 $s .= $sep . $this->trackbackLink();
 927
 928                         if ( $wgTitle->getNamespace() == NS_USER
 929                             || $wgTitle->getNamespace() == NS_USER_TALK )
 930
 931                         {
 932                                 $id=User::idFromName($wgTitle->getText());
 933                                 $ip=User::isIP($wgTitle->getText());
 934
 935                                 if($id || $ip) { # both anons and non-anons have contri list
 936                                         $s .= $sep . $this->userContribsLink();
 937                                 }
 938                                 if( $this->showEmailUser( $id ) ) {
 939                                         $s .= $sep . $this->emailUserLink();
 940                                 }
 941                         }
 942                         if ( $wgTitle->getArticleId() ) {
 943                                 $s .= "\n<br />";
 944                                 if($wgUser->isAllowed('delete')) { $s .= $this->deleteThisPage(); }
 945                                 if($wgUser->isAllowed('protect')) { $s .= $sep . $this->protectThisPage(); }
 946                                 if($wgUser->isAllowed('move')) { $s .= $sep . $this->moveThisPage(); }
 947                         }
 948                         $s .= "<br />\n" . $this->otherLanguages();
 949                 }
 950                 return $s;
 951         }
 952
 953         function pageStats() {
 954                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
 955                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgTitle, $wgPageShowWatchingUsers;
 956
 957                 extract( $wgRequest->getValues( 'oldid', 'diff' ) );
 958                 if ( ! $wgOut->isArticle() ) { return ''; }
 959                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
 960                 if ( 0 == $wgArticle->getID() ) { return ''; }
 961
 962                 $s = '';
 963                 if ( !$wgDisableCounters ) {
 964                         $count = $wgLang->formatNum( $wgArticle->getCount() );
 965                         if ( $count ) {
 966                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
 967                         }
 968                 }
 969
 970                 if (isset($wgMaxCredits) && $wgMaxCredits != 0) {
 971                     require_once('Credits.php');
 972                     $s .= ' ' . getCredits($wgArticle, $wgMaxCredits, $wgShowCreditsIfMax);
 973                 } else {
 974                     $s .= $this->lastModified();
 975                 }
 976
 977                 if ($wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 978                         $dbr =& wfGetDB( DB_SLAVE );
 979                         extract( $dbr->tableNames( 'watchlist' ) );
 980                         $sql = "SELECT COUNT(*) AS n FROM $watchlist
 981                                 WHERE wl_title='" . $dbr->strencode($wgTitle->getDBKey()) .
 982                                 "' AND  wl_namespace=" . $wgTitle->getNamespace() ;
 983                         $res = $dbr->query( $sql, 'Skin::pageStats');
 984                         $x = $dbr->fetchObject( $res );
 985                         $s .= ' ' . wfMsg('number_of_watching_users_pageview', $x->n );
 986                 }
 987
 988                 return $s . ' ' .  $this->getCopyright();
 989         }
 990
 991         function getCopyright( $type = 'detect' ) {
 992                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
 993
 994                 if ( $type == 'detect' ) {
 995                         $oldid = $wgRequest->getVal( 'oldid' );
 996                         $diff = $wgRequest->getVal( 'diff' );
 997
 998                         if ( !is_null( $oldid ) && is_null( $diff ) && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 999                                 $type = 'history';
1000                         } else {
1001                                 $type = 'normal';
1002                         }
1003                 }
1004
1005                 if ( $type == 'history' ) {
1006                         $msg = 'history_copyright';
1007                 } else {
1008                         $msg = 'copyright';
1009                 }
1010
1011                 $out = '';
1012                 if( $wgRightsPage ) {
1013                         $link = $this->makeKnownLink( $wgRightsPage, $wgRightsText );
1014                 } elseif( $wgRightsUrl ) {
1015                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1016                 } else {
1017                         # Give up now
1018                         return $out;
1019                 }
1020                 $out .= wfMsgForContent( $msg, $link );
1021                 return $out;
1022         }
1023
1024         function getCopyrightIcon() {
1025                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1026                 $out = '';
1027                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1028                         $out = $wgCopyrightIcon;
1029                 } else if ( $wgRightsIcon ) {
1030                         $icon = htmlspecialchars( $wgRightsIcon );
1031                         if ( $wgRightsUrl ) {
1032                                 $url = htmlspecialchars( $wgRightsUrl );
1033                                 $out .= '<a href="'.$url.'">';
1034                         }
1035                         $text = htmlspecialchars( $wgRightsText );
1036                         $out .= "<img src=\"$icon\" alt='$text' />";
1037                         if ( $wgRightsUrl ) {
1038                                 $out .= '</a>';
1039                         }
1040                 }
1041                 return $out;
1042         }
1043
1044         function getPoweredBy() {
1045                 global $wgStylePath;
1046                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1047                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="MediaWiki" /></a>';
1048                 return $img;
1049         }
1050
1051         function lastModified() {
1052                 global $wgLang, $wgArticle, $wgLoadBalancer;
1053
1054                 $timestamp = $wgArticle->getTimestamp();
1055                 if ( $timestamp ) {
1056                         $d = $wgLang->date( $timestamp, true );
1057                         $t = $wgLang->time( $timestamp, true );
1058                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1059                 } else {
1060                         $s = '';
1061                 }
1062                 if ( $wgLoadBalancer->getLaggedSlaveMode() ) {
1063                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1064                 }
1065                 return $s;
1066         }
1067
1068         function logoText( $align = '' ) {
1069                 if ( '' != $align ) { $a = " align='{$align}'"; }
1070                 else { $a = ''; }
1071
1072                 $mp = wfMsg( 'mainpage' );
1073                 $titleObj = Title::newFromText( $mp );
1074                 if ( is_object( $titleObj ) ) {
1075                         $url = $titleObj->escapeLocalURL();
1076                 } else {
1077                         $url = '';
1078                 }
1079
1080                 $logourl = $this->getLogo();
1081                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1082                 return $s;
1083         }
1084
1085         /**
1086          * show a drop-down box of special pages
1087          */
1088         function specialPagesList() {
1089                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1090                 $a = array();
1091                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1092                 foreach ( $pages as $name => $page ) {
1093                         $pages[$name] = $page->getDescription();
1094                 }
1095
1096                 $go = wfMsg( 'go' );
1097                 $sp = wfMsg( 'specialpages' );
1098                 $spp = $wgContLang->specialPage( 'Specialpages' );
1099
1100                 $s = '<form id="specialpages" method="get" class="inline" ' .
1101                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1102                 $s .= "<select name=\"wpDropdown\">\n";
1103                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1104
1105
1106                 foreach ( $pages as $name => $desc ) {
1107                         $p = $wgContLang->specialPage( $name );
1108                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1109                 }
1110                 $s .= "</select>\n";
1111                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1112                 $s .= "</form>\n";
1113                 return $s;
1114         }
1115
1116         function mainPageLink() {
1117                 $mp = wfMsgForContent( 'mainpage' );
1118                 $mptxt = wfMsg( 'mainpage');
1119                 $s = $this->makeKnownLink( $mp, $mptxt );
1120                 return $s;
1121         }
1122
1123         function copyrightLink() {
1124                 $s = $this->makeKnownLink( wfMsgForContent( 'copyrightpage' ),
1125                   wfMsg( 'copyrightpagename' ) );
1126                 return $s;
1127         }
1128
1129         function privacyLink() {
1130                 $privacy = wfMsg( 'privacy' );
1131                 if ($privacy == '-') {
1132                         return '';
1133                 } else {
1134                         return $this->makeKnownLink( wfMsgForContent( 'privacypage' ), $privacy);
1135                 }
1136         }
1137
1138         function aboutLink() {
1139                 $s = $this->makeKnownLink( wfMsgForContent( 'aboutpage' ),
1140                   wfMsg( 'aboutsite' ) );
1141                 return $s;
1142         }
1143
1144         function disclaimerLink() {
1145                 $disclaimers = wfMsg( 'disclaimers' );
1146                 if ($disclaimers == '-') {
1147                         return '';
1148                 } else {
1149                         return $this->makeKnownLink( wfMsgForContent( 'disclaimerpage' ),
1150                                                      $disclaimers );
1151                 }
1152         }
1153
1154         function editThisPage() {
1155                 global $wgOut, $wgTitle;
1156
1157                 if ( ! $wgOut->isArticleRelated() ) {
1158                         $s = wfMsg( 'protectedpage' );
1159                 } else {
1160                         if ( $wgTitle->userCanEdit() ) {
1161                                 $t = wfMsg( 'editthispage' );
1162                         } else {
1163                                 $t = wfMsg( 'viewsource' );
1164                         }
1165
1166                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $this->editUrlOptions() );
1167                 }
1168                 return $s;
1169         }
1170
1171         /**
1172          * Return URL options for the 'edit page' link.
1173          * This may include an 'oldid' specifier, if the current page view is such.
1174          *
1175          * @return string
1176          * @private
1177          */
1178         function editUrlOptions() {
1179                 global $wgArticle;
1180
1181                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1182                         return "action=edit&oldid=" . intval( $this->mRevisionId );
1183                 } else {
1184                         return "action=edit";
1185                 }
1186         }
1187
1188         function deleteThisPage() {
1189                 global $wgUser, $wgTitle, $wgRequest;
1190
1191                 $diff = $wgRequest->getVal( 'diff' );
1192                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('delete') ) {
1193                         $t = wfMsg( 'deletethispage' );
1194
1195                         $s = $this->makeKnownLinkObj( $wgTitle, $t, 'action=delete' );
1196                 } else {
1197                         $s = '';
1198                 }
1199                 return $s;
1200         }
1201
1202         function protectThisPage() {
1203                 global $wgUser, $wgTitle, $wgRequest;
1204
1205                 $diff = $wgRequest->getVal( 'diff' );
1206                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1207                         if ( $wgTitle->isProtected() ) {
1208                                 $t = wfMsg( 'unprotectthispage' );
1209                                 $q = 'action=unprotect';
1210                         } else {
1211                                 $t = wfMsg( 'protectthispage' );
1212                                 $q = 'action=protect';
1213                         }
1214                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1215                 } else {
1216                         $s = '';
1217                 }
1218                 return $s;
1219         }
1220
1221         function watchThisPage() {
1222                 global $wgOut, $wgTitle;
1223
1224                 if ( $wgOut->isArticleRelated() ) {
1225                         if ( $wgTitle->userIsWatching() ) {
1226                                 $t = wfMsg( 'unwatchthispage' );
1227                                 $q = 'action=unwatch';
1228                         } else {
1229                                 $t = wfMsg( 'watchthispage' );
1230                                 $q = 'action=watch';
1231                         }
1232                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1233                 } else {
1234                         $s = wfMsg( 'notanarticle' );
1235                 }
1236                 return $s;
1237         }
1238
1239         function moveThisPage() {
1240                 global $wgTitle;
1241
1242                 if ( $wgTitle->userCanMove() ) {
1243                         return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Movepage' ),
1244                           wfMsg( 'movethispage' ), 'target=' . $wgTitle->getPrefixedURL() );
1245                 } else {
1246                         // no message if page is protected - would be redundant
1247                         return '';
1248                 }
1249         }
1250
1251         function historyLink() {
1252                 global $wgTitle;
1253
1254                 return $this->makeKnownLinkObj( $wgTitle,
1255                   wfMsg( 'history' ), 'action=history' );
1256         }
1257
1258         function whatLinksHere() {
1259                 global $wgTitle;
1260
1261                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Whatlinkshere' ),
1262                   wfMsg( 'whatlinkshere' ), 'target=' . $wgTitle->getPrefixedURL() );
1263         }
1264
1265         function userContribsLink() {
1266                 global $wgTitle;
1267
1268                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Contributions' ),
1269                   wfMsg( 'contributions' ), 'target=' . $wgTitle->getPartialURL() );
1270         }
1271
1272         function showEmailUser( $id ) {
1273                 global $wgEnableEmail, $wgEnableUserEmail, $wgUser;
1274                 return $wgEnableEmail &&
1275                        $wgEnableUserEmail &&
1276                        $wgUser->isLoggedIn() && # show only to signed in users
1277                        0 != $id; # we can only email to non-anons ..
1278 #                      '' != $id->getEmail() && # who must have an email address stored ..
1279 #                      0 != $id->getEmailauthenticationtimestamp() && # .. which is authenticated
1280 #                      1 != $wgUser->getOption('disablemail'); # and not disabled
1281         }
1282
1283         function emailUserLink() {
1284                 global $wgTitle;
1285
1286                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Emailuser' ),
1287                   wfMsg( 'emailuser' ), 'target=' . $wgTitle->getPartialURL() );
1288         }
1289
1290         function watchPageLinksLink() {
1291                 global $wgOut, $wgTitle;
1292
1293                 if ( ! $wgOut->isArticleRelated() ) {
1294                         return '(' . wfMsg( 'notanarticle' ) . ')';
1295                 } else {
1296                         return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL,
1297                           'Recentchangeslinked' ), wfMsg( 'recentchangeslinked' ),
1298                           'target=' . $wgTitle->getPrefixedURL() );
1299                 }
1300         }
1301
1302         function trackbackLink() {
1303                 global $wgTitle;
1304
1305                 return "<a href=\"" . $wgTitle->trackbackURL() . "\">"
1306                         . wfMsg('trackbacklink') . "</a>";
1307         }
1308
1309         function otherLanguages() {
1310                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1311
1312                 if ( $wgHideInterlanguageLinks ) {
1313                         return '';
1314                 }
1315
1316                 $a = $wgOut->getLanguageLinks();
1317                 if ( 0 == count( $a ) ) {
1318                         return '';
1319                 }
1320
1321                 $s = wfMsg( 'otherlanguages' ) . ': ';
1322                 $first = true;
1323                 if($wgContLang->isRTL()) $s .= '<span dir="LTR">';
1324                 foreach( $a as $l ) {
1325                         if ( ! $first ) { $s .= ' | '; }
1326                         $first = false;
1327
1328                         $nt = Title::newFromText( $l );
1329                         $url = $nt->escapeFullURL();
1330                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1331
1332                         if ( '' == $text ) { $text = $l; }
1333                         $style = $this->getExternalLinkAttributes( $l, $text );
1334                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1335                 }
1336                 if($wgContLang->isRTL()) $s .= '</span>';
1337                 return $s;
1338         }
1339
1340         function bugReportsLink() {
1341                 $s = $this->makeKnownLink( wfMsgForContent( 'bugreportspage' ),
1342                   wfMsg( 'bugreports' ) );
1343                 return $s;
1344         }
1345
1346         function dateLink() {
1347                 $t1 = Title::newFromText( gmdate( 'F j' ) );
1348                 $t2 = Title::newFromText( gmdate( 'Y' ) );
1349
1350                 $id = $t1->getArticleID();
1351
1352                 if ( 0 == $id ) {
1353                         $s = $this->makeBrokenLink( $t1->getText() );
1354                 } else {
1355                         $s = $this->makeKnownLink( $t1->getText() );
1356                 }
1357                 $s .= ', ';
1358
1359                 $id = $t2->getArticleID();
1360
1361                 if ( 0 == $id ) {
1362                         $s .= $this->makeBrokenLink( $t2->getText() );
1363                 } else {
1364                         $s .= $this->makeKnownLink( $t2->getText() );
1365                 }
1366                 return $s;
1367         }
1368
1369         function talkLink() {
1370                 global $wgTitle;
1371
1372                 if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
1373                         # No discussion links for special pages
1374                         return '';
1375                 }
1376
1377                 if( $wgTitle->isTalkPage() ) {
1378                         $link = $wgTitle->getSubjectPage();
1379                         switch( $link->getNamespace() ) {
1380                                 case NS_MAIN:
1381                                         $text = wfMsg( 'articlepage' );
1382                                         break;
1383                                 case NS_USER:
1384                                         $text = wfMsg( 'userpage' );
1385                                         break;
1386                                 case NS_PROJECT:
1387                                         $text = wfMsg( 'projectpage' );
1388                                         break;
1389                                 case NS_IMAGE:
1390                                         $text = wfMsg( 'imagepage' );
1391                                         break;
1392                                 case NS_MEDIAWIKI:
1393                                         $text = wfMsg( 'mediawikipage' );
1394                                         break;
1395                                 case NS_TEMPLATE:
1396                                         $text = wfMsg( 'templatepage' );
1397                                         break;
1398                                 case NS_HELP:
1399                                         $text = wfMsg( 'viewhelppage' );
1400                                         break;
1401                                 case NS_CATEGORY:
1402                                         $text = wfMsg( 'categorypage' );
1403                                         break;
1404                                 default:
1405                                         $text = wfMsg( 'articlepage' );
1406                         }
1407                 } else {
1408                         $link = $wgTitle->getTalkPage();
1409                         $text = wfMsg( 'talkpage' );
1410                 }
1411
1412                 $s = $this->makeLinkObj( $link, $text );
1413
1414                 return $s;
1415         }
1416
1417         function commentLink() {
1418                 global $wgTitle, $wgOut;
1419
1420                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
1421                         return '';
1422                 }
1423
1424                 # __NEWSECTIONLINK___ changes behaviour here
1425                 # If it's present, the link points to this page, otherwise
1426                 # it points to the talk page
1427                 if( $wgTitle->isTalkPage() ) {
1428                         $title =& $wgTitle;
1429                 } elseif( $wgOut->showNewSectionLink() ) {
1430                         $title =& $wgTitle;
1431                 } else {
1432                         $title =& $wgTitle->getTalkPage();
1433                 }
1434
1435                 return $this->makeKnownLinkObj( $title, wfMsg( 'postcomment' ), 'action=edit&section=new' );
1436         }
1437
1438         /* these are used extensively in SkinTemplate, but also some other places */
1439         static function makeSpecialUrl( $name, $urlaction = '' ) {
1440                 $title = Title::makeTitle( NS_SPECIAL, $name );
1441                 return $title->getLocalURL( $urlaction );
1442         }
1443
1444         static function makeI18nUrl( $name, $urlaction = '' ) {
1445                 $title = Title::newFromText( wfMsgForContent( $name ) );
1446                 self::checkTitle( $title, $name );
1447                 return $title->getLocalURL( $urlaction );
1448         }
1449
1450         static function makeUrl( $name, $urlaction = '' ) {
1451                 $title = Title::newFromText( $name );
1452                 self::checkTitle( $title, $name );
1453                 return $title->getLocalURL( $urlaction );
1454         }
1455
1456         # If url string starts with http, consider as external URL, else
1457         # internal
1458         static function makeInternalOrExternalUrl( $name ) {
1459                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1460                         return $name;
1461                 } else {
1462                         return self::makeUrl( $name );
1463                 }
1464         }
1465
1466         # this can be passed the NS number as defined in Language.php
1467         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1468                 $title = Title::makeTitleSafe( $namespace, $name );
1469                 self::checkTitle( $title, $name );
1470                 return $title->getLocalURL( $urlaction );
1471         }
1472
1473         /* these return an array with the 'href' and boolean 'exists' */
1474         static function makeUrlDetails( $name, $urlaction = '' ) {
1475                 $title = Title::newFromText( $name );
1476                 self::checkTitle( $title, $name );
1477                 return array(
1478                         'href' => $title->getLocalURL( $urlaction ),
1479                         'exists' => $title->getArticleID() != 0 ? true : false
1480                 );
1481         }
1482
1483         /**
1484          * Make URL details where the article exists (or at least it's convenient to think so)
1485          */
1486         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1487                 $title = Title::newFromText( $name );
1488                 self::checkTitle( $title, $name );
1489                 return array(
1490                         'href' => $title->getLocalURL( $urlaction ),
1491                         'exists' => true
1492                 );
1493         }
1494
1495         # make sure we have some title to operate on
1496         static function checkTitle( &$title, &$name ) {
1497                 if( !is_object( $title ) ) {
1498                         $title = Title::newFromText( $name );
1499                         if( !is_object( $title ) ) {
1500                                 $title = Title::newFromText( '--error: link target missing--' );
1501                         }
1502                 }
1503         }
1504
1505         /**
1506          * Build an array that represents the sidebar(s), the navigation bar among them
1507          *
1508          * @return array
1509          * @private
1510          */
1511         function buildSidebar() {
1512                 global $parserMemc, $wgEnableSidebarCache;
1513                 global $wgLang, $wgContLang;
1514
1515                 $fname = 'SkinTemplate::buildSidebar';
1516
1517                 wfProfileIn( $fname );
1518
1519                 $key = wfMemcKey( 'sidebar' );
1520                 $cacheSidebar = $wgEnableSidebarCache &&
1521                         ($wgLang->getCode() == $wgContLang->getCode());
1522
1523                 if ($cacheSidebar) {
1524                         $cachedsidebar = $parserMemc->get( $key );
1525                         if ($cachedsidebar!="") {
1526                                 wfProfileOut($fname);
1527                                 return $cachedsidebar;
1528                         }
1529                 }
1530
1531                 $bar = array();
1532                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
1533                 foreach ($lines as $line) {
1534                         if (strpos($line, '*') !== 0)
1535                                 continue;
1536                         if (strpos($line, '**') !== 0) {
1537                                 $line = trim($line, '* ');
1538                                 $heading = $line;
1539                         } else {
1540                                 if (strpos($line, '|') !== false) { // sanity check
1541                                         $line = explode( '|' , trim($line, '* '), 2 );
1542                                         $link = wfMsgForContent( $line[0] );
1543                                         if ($link == '-')
1544                                                 continue;
1545                                         if (wfEmptyMsg($line[1], $text = wfMsg($line[1])))
1546                                                 $text = $line[1];
1547                                         if (wfEmptyMsg($line[0], $link))
1548                                                 $link = $line[0];
1549                                         $href = self::makeInternalOrExternalUrl( $link );
1550                                         $bar[$heading][] = array(
1551                                                 'text' => $text,
1552                                                 'href' => $href,
1553                                                 'id' => 'n-' . strtr($line[1], ' ', '-'),
1554                                                 'active' => false
1555                                         );
1556                                 } else { continue; }
1557                         }
1558                 }
1559                 if ($cacheSidebar)
1560                         $cachednotice = $parserMemc->set( $key, $bar, 86400 );
1561                 wfProfileOut( $fname );
1562                 return $bar;
1563         }
1564 }
1565 ?>