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                                 $matches = array();
  52                                 if(preg_match('/^([^.]*)\.php$/',$file, $matches)) {
  53                                         $aSkin = $matches[1];
  54                                         $wgValidSkinNames[strtolower($aSkin)] = $aSkin;
  55                                 }
  56                         }
  57                         $skinDir->close();
  58                         $skinsInitialised = true;
  59                         wfProfileOut( __METHOD__ . '-init' );
  60                 }
  61                 return $wgValidSkinNames;
  62         }
  63
  64         /**
  65          * Normalize a skin preference value to a form that can be loaded.
  66          * If a skin can't be found, it will fall back to the configured
  67          * default (or the old 'Classic' skin if that's broken).
  68          * @param string $key
  69          * @return string
  70          * @static
  71          */
  72         static function normalizeKey( $key ) {
  73                 global $wgDefaultSkin;
  74                 $skinNames = Skin::getSkinNames();
  75
  76                 if( $key == '' ) {
  77                         // Don't return the default immediately;
  78                         // in a misconfiguration we need to fall back.
  79                         $key = $wgDefaultSkin;
  80                 }
  81
  82                 if( isset( $skinNames[$key] ) ) {
  83                         return $key;
  84                 }
  85
  86                 // Older versions of the software used a numeric setting
  87                 // in the user preferences.
  88                 $fallback = array(
  89                         0 => $wgDefaultSkin,
  90                         1 => 'nostalgia',
  91                         2 => 'cologneblue' );
  92
  93                 if( isset( $fallback[$key] ) ){
  94                         $key = $fallback[$key];
  95                 }
  96
  97                 if( isset( $skinNames[$key] ) ) {
  98                         return $key;
  99                 } else {
 100                         // The old built-in skin
 101                         return 'standard';
 102                 }
 103         }
 104
 105         /**
 106          * Factory method for loading a skin of a given type
 107          * @param string $key 'monobook', 'standard', etc
 108          * @return Skin
 109          * @static
 110          */
 111         static function &newFromKey( $key ) {
 112                 global $wgStyleDirectory;
 113
 114                 $key = Skin::normalizeKey( $key );
 115
 116                 $skinNames = Skin::getSkinNames();
 117                 $skinName = $skinNames[$key];
 118
 119                 # Grab the skin class and initialise it.
 120                 // Preload base classes to work around APC/PHP5 bug
 121                 $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 122                 if( file_exists( $deps ) ) include_once( $deps );
 123                 require_once( "{$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';
 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', 0 );
 155                 return $q;
 156         }
 157
 158         function initPage( &$out ) {
 159                 global $wgFavicon, $wgScriptPath, $wgSitename, $wgLanguageCode, $wgLanguageNames;
 160
 161                 $fname = 'Skin::initPage';
 162                 wfProfileIn( $fname );
 163
 164                 if( false !== $wgFavicon ) {
 165                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 166                 }
 167
 168                 # OpenSearch description link
 169                 $out->addLink( array(
 170                         'rel' => 'search',
 171                         'type' => 'application/opensearchdescription+xml',
 172                         'href' => "$wgScriptPath/opensearch_desc.php",
 173                         'title' => "$wgSitename ({$wgLanguageNames[$wgLanguageCode]})",
 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 makeVariablesScript( $data ) {
 273                 global $wgJsMimeType;
 274
 275                 $r = "<script type= \"$wgJsMimeType\">/*<![CDATA[*/\n";
 276                 foreach ( $data as $name => $value ) {
 277                         $encValue = Xml::encodeJsVar( $value );
 278                         $r .= "var $name = $encValue;\n";
 279                 }
 280                 $r .= "/*]]>*/</script>\n";
 281
 282                 return $r;
 283         }
 284
 285         /**
 286          * Make a <script> tag containing global variables
 287          * @param array $data Associative array containing one element:
 288          *     skinname => the skin name
 289          * The odd calling convention is for backwards compatibility
 290          */
 291         static function makeGlobalVariablesScript( $data ) {
 292                 global $wgStylePath, $wgUser;
 293                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 294                 global $wgTitle, $wgCanonicalNamespaceNames, $wgOut, $wgArticle;
 295                 global $wgBreakFrames;
 296
 297                 $ns = $wgTitle->getNamespace();
 298                 $nsname = isset( $wgCanonicalNamespaceNames[ $ns ] ) ? $wgCanonicalNamespaceNames[ $ns ] : $wgTitle->getNsText();
 299
 300                 $vars = array(
 301                         'skin' => $data['skinname'],
 302                         'stylepath' => $wgStylePath,
 303                         'wgArticlePath' => $wgArticlePath,
 304                         'wgScriptPath' => $wgScriptPath,
 305                         'wgServer' => $wgServer,
 306                         'wgCanonicalNamespace' => $nsname,
 307                         'wgCanonicalSpecialPageName' => SpecialPage::resolveAlias( $wgTitle->getDBKey() ),
 308                         'wgNamespaceNumber' => $wgTitle->getNamespace(),
 309                         'wgPageName' => $wgTitle->getPrefixedDBKey(),
 310                         'wgTitle' => $wgTitle->getText(),
 311                         'wgArticleId' => $wgTitle->getArticleId(),
 312                         'wgIsArticle' => $wgOut->isArticle(),
 313                         'wgUserName' => $wgUser->isAnon() ? NULL : $wgUser->getName(),
 314                         'wgUserLanguage' => $wgLang->getCode(),
 315                         'wgContentLanguage' => $wgContLang->getCode(),
 316                         'wgBreakFrames' => $wgBreakFrames,
 317                         'wgCurRevisionId' => isset( $wgArticle ) ? $wgArticle->getLatest() : 0,
 318                 );
 319
 320                 return self::makeVariablesScript( $vars );
 321         }
 322
 323         function getHeadScripts() {
 324                 global $wgStylePath, $wgUser, $wgAllowUserJs, $wgJsMimeType, $wgStyleVersion;
 325
 326                 $r = self::makeGlobalVariablesScript( array( 'skinname' => $this->getSkinName() ) );
 327
 328                 $r .= "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js?$wgStyleVersion\"></script>\n";
 329                 global $wgUseSiteJs;
 330                 if ($wgUseSiteJs) {
 331                         if ($wgUser->isLoggedIn()) {
 332                                 $r .= "<script type=\"$wgJsMimeType\" src=\"".htmlspecialchars(self::makeUrl('-','action=raw&smaxage=0&gen=js'))."\"><!-- site js --></script>\n";
 333                         } else {
 334                                 $r .= "<script type=\"$wgJsMimeType\" src=\"".htmlspecialchars(self::makeUrl('-','action=raw&gen=js'))."\"><!-- site js --></script>\n";
 335                         }
 336                 }
 337                 if( $wgAllowUserJs && $wgUser->isLoggedIn() ) {
 338                         $userpage = $wgUser->getUserPage();
 339                         $userjs = htmlspecialchars( self::makeUrl(
 340                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 341                                 'action=raw&ctype='.$wgJsMimeType));
 342                         $r .= '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>\n";
 343                 }
 344                 return $r;
 345         }
 346
 347         /**
 348          * To make it harder for someone to slip a user a fake
 349          * user-JavaScript or user-CSS preview, a random token
 350          * is associated with the login session. If it's not
 351          * passed back with the preview request, we won't render
 352          * the code.
 353          *
 354          * @param string $action
 355          * @return bool
 356          * @private
 357          */
 358         function userCanPreview( $action ) {
 359                 global $wgTitle, $wgRequest, $wgUser;
 360
 361                 if( $action != 'submit' )
 362                         return false;
 363                 if( !$wgRequest->wasPosted() )
 364                         return false;
 365                 if( !$wgTitle->userCanEditCssJsSubpage() )
 366                         return false;
 367                 return $wgUser->matchEditToken(
 368                         $wgRequest->getVal( 'wpEditToken' ) );
 369         }
 370
 371         # get the user/site-specific stylesheet, SkinTemplate loads via RawPage.php (settings are cached that way)
 372         function getUserStylesheet() {
 373                 global $wgStylePath, $wgRequest, $wgContLang, $wgSquidMaxage, $wgStyleVersion;
 374                 $sheet = $this->getStylesheet();
 375                 $s = "@import \"$wgStylePath/common/common.css?$wgStyleVersion\";\n";
 376                 $s .= "@import \"$wgStylePath/$sheet?$wgStyleVersion\";\n";
 377                 if($wgContLang->isRTL()) $s .= "@import \"$wgStylePath/common/common_rtl.css?$wgStyleVersion\";\n";
 378
 379                 $query = "usemsgcache=yes&action=raw&ctype=text/css&smaxage=$wgSquidMaxage";
 380                 $s .= '@import "' . self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) . "\";\n" .
 381                         '@import "' . self::makeNSUrl( ucfirst( $this->getSkinName() . '.css' ), $query, NS_MEDIAWIKI ) . "\";\n";
 382
 383                 $s .= $this->doGetUserStyles();
 384                 return $s."\n";
 385         }
 386
 387         /**
 388          * This returns MediaWiki:Common.js.  For some bizarre reason, it does
 389          * *not* return any custom user JS from user subpages.  Huh?
 390          *
 391          * @return string
 392          */
 393         function getUserJs() {
 394                 $fname = 'Skin::getUserJs';
 395                 wfProfileIn( $fname );
 396
 397                 global $wgStylePath;
 398                 $s = "/* generated javascript */\n";
 399                 $s .= "var skin = '{$this->skinname}';\nvar stylepath = '{$wgStylePath}';";
 400                 $s .= "\n\n/* MediaWiki:Common.js */\n";
 401                 $commonJs = wfMsgForContent('Common.js');
 402                 if ( !wfEmptyMsg ( 'Common.js', $commonJs ) ) {
 403                         $s .= $commonJs;
 404                 }
 405
 406                 wfProfileOut( $fname );
 407                 return $s;
 408     }
 409
 410         /**
 411          * Return html code that include User stylesheets
 412          */
 413         function getUserStyles() {
 414                 $s = "<style type='text/css'>\n";
 415                 $s .= "/*/*/ /*<![CDATA[*/\n"; # <-- Hide the styles from Netscape 4 without hiding them from IE/Mac
 416                 $s .= $this->getUserStylesheet();
 417                 $s .= "/*]]>*/ /* */\n";
 418                 $s .= "</style>\n";
 419                 return $s;
 420         }
 421
 422         /**
 423          * Some styles that are set by user through the user settings interface.
 424          */
 425         function doGetUserStyles() {
 426                 global $wgUser, $wgUser, $wgRequest, $wgTitle, $wgAllowUserCss;
 427
 428                 $s = '';
 429
 430                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) { # logged in
 431                         if($wgTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getText( 'action' ) ) ) {
 432                                 $s .= $wgRequest->getText('wpTextbox1');
 433                         } else {
 434                                 $userpage = $wgUser->getUserPage();
 435                                 $s.= '@import "'.self::makeUrl(
 436                                         $userpage->getPrefixedText().'/'.$this->getSkinName().'.css',
 437                                         'action=raw&ctype=text/css').'";'."\n";
 438                         }
 439                 }
 440
 441                 return $s . $this->reallyDoGetUserStyles();
 442         }
 443
 444         function reallyDoGetUserStyles() {
 445                 global $wgUser;
 446                 $s = '';
 447                 if (($undopt = $wgUser->getOption("underline")) != 2) {
 448                         $underline = $undopt ? 'underline' : 'none';
 449                         $s .= "a { text-decoration: $underline; }\n";
 450                 }
 451                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 452                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 453                 } else {
 454                         $s .= <<<END
 455 a.new, #quickbar a.new,
 456 a.stub, #quickbar a.stub {
 457         color: inherit;
 458         text-decoration: inherit;
 459 }
 460 a.new:after, #quickbar a.new:after {
 461         content: "?";
 462         color: #CC2200;
 463         text-decoration: $underline;
 464 }
 465 a.stub:after, #quickbar a.stub:after {
 466         content: "!";
 467         color: #772233;
 468         text-decoration: $underline;
 469 }
 470 END;
 471                 }
 472                 if( $wgUser->getOption( 'justify' ) ) {
 473                         $s .= "#article, #bodyContent { text-align: justify; }\n";
 474                 }
 475                 if( !$wgUser->getOption( 'showtoc' ) ) {
 476                         $s .= "#toc { display: none; }\n";
 477                 }
 478                 if( !$wgUser->getOption( 'editsection' ) ) {
 479                         $s .= ".editsection { display: none; }\n";
 480                 }
 481                 return $s;
 482         }
 483
 484         function getBodyOptions() {
 485                 global $wgUser, $wgTitle, $wgOut, $wgRequest, $wgContLang;
 486
 487                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 488
 489                 if ( 0 != $wgTitle->getNamespace() ) {
 490                         $a = array( 'bgcolor' => '#ffffec' );
 491                 }
 492                 else $a = array( 'bgcolor' => '#FFFFFF' );
 493                 if($wgOut->isArticle() && $wgUser->getOption('editondblclick') &&
 494                   $wgTitle->userCanEdit() ) {
 495                         $s = $wgTitle->getFullURL( $this->editUrlOptions() );
 496                         $s = 'document.location = "' .wfEscapeJSString( $s ) .'";';
 497                         $a += array ('ondblclick' => $s);
 498
 499                 }
 500                 $a['onload'] = $wgOut->getOnloadHandler();
 501                 if( $wgUser->getOption( 'editsectiononrightclick' ) ) {
 502                         if( $a['onload'] != '' ) {
 503                                 $a['onload'] .= ';';
 504                         }
 505                         $a['onload'] .= 'setupRightClickEdit()';
 506                 }
 507                 $a['class'] = 'ns-'.$wgTitle->getNamespace().' '.($wgContLang->isRTL() ? "rtl" : "ltr").
 508                 ' '.Sanitizer::escapeId( 'page-'.$wgTitle->getPrefixedText() );
 509                 return $a;
 510         }
 511
 512         /**
 513          * URL to the logo
 514          */
 515         function getLogo() {
 516                 global $wgLogo;
 517                 return $wgLogo;
 518         }
 519
 520         /**
 521          * This will be called immediately after the <body> tag.  Split into
 522          * two functions to make it easier to subclass.
 523          */
 524         function beforeContent() {
 525                 return $this->doBeforeContent();
 526         }
 527
 528         function doBeforeContent() {
 529                 global $wgContLang;
 530                 $fname = 'Skin::doBeforeContent';
 531                 wfProfileIn( $fname );
 532
 533                 $s = '';
 534                 $qb = $this->qbSetting();
 535
 536                 if( $langlinks = $this->otherLanguages() ) {
 537                         $rows = 2;
 538                         $borderhack = '';
 539                 } else {
 540                         $rows = 1;
 541                         $langlinks = false;
 542                         $borderhack = 'class="top"';
 543                 }
 544
 545                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 546                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 547
 548                 $shove = ($qb != 0);
 549                 $left = ($qb == 1 || $qb == 3);
 550                 if($wgContLang->isRTL()) $left = !$left;
 551
 552                 if ( !$shove ) {
 553                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 554                           $this->logoText() . '</td>';
 555                 } elseif( $left ) {
 556                         $s .= $this->getQuickbarCompensator( $rows );
 557                 }
 558                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 559                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 560
 561                 $s .= $this->topLinks() ;
 562                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 563
 564                 $r = $wgContLang->isRTL() ? "left" : "right";
 565                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 566                 $s .= $this->nameAndLogin();
 567                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 568
 569                 if ( $langlinks ) {
 570                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 571                 }
 572
 573                 if ( $shove && !$left ) { # Right
 574                         $s .= $this->getQuickbarCompensator( $rows );
 575                 }
 576                 $s .= "</tr>\n</table>\n</div>\n";
 577                 $s .= "\n<div id='article'>\n";
 578
 579                 $notice = wfGetSiteNotice();
 580                 if( $notice ) {
 581                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 582                 }
 583                 $s .= $this->pageTitle();
 584                 $s .= $this->pageSubtitle() ;
 585                 $s .= $this->getCategories();
 586                 wfProfileOut( $fname );
 587                 return $s;
 588         }
 589
 590
 591         function getCategoryLinks () {
 592                 global $wgOut, $wgTitle, $wgUseCategoryBrowser;
 593                 global $wgContLang;
 594
 595                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 596
 597                 # Separator
 598                 $sep = wfMsgHtml( 'catseparator' );
 599
 600                 // Use Unicode bidi embedding override characters,
 601                 // to make sure links don't smash each other up in ugly ways.
 602                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 603                 $embed = "<span dir='$dir'>";
 604                 $pop = '</span>';
 605                 $t = $embed . implode ( "{$pop} {$sep} {$embed}" , $wgOut->mCategoryLinks ) . $pop;
 606
 607                 $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escape' ), count( $wgOut->mCategoryLinks ) );
 608                 $s = $this->makeLinkObj( Title::newFromText( wfMsgForContent('pagecategorieslink') ), $msg )
 609                         . ': ' . $t;
 610
 611                 # optional 'dmoz-like' category browser. Will be shown under the list
 612                 # of categories an article belong to
 613                 if($wgUseCategoryBrowser) {
 614                         $s .= '<br /><hr />';
 615
 616                         # get a big array of the parents tree
 617                         $parenttree = $wgTitle->getParentCategoryTree();
 618                         # Skin object passed by reference cause it can not be
 619                         # accessed under the method subfunction drawCategoryBrowser
 620                         $tempout = explode("\n", Skin::drawCategoryBrowser($parenttree, $this) );
 621                         # Clean out bogus first entry and sort them
 622                         unset($tempout[0]);
 623                         asort($tempout);
 624                         # Output one per line
 625                         $s .= implode("<br />\n", $tempout);
 626                 }
 627
 628                 return $s;
 629         }
 630
 631         /** Render the array as a serie of links.
 632          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 633          * @param &skin Object: skin passed by reference
 634          * @return String separated by &gt;, terminate with "\n"
 635          */
 636         function drawCategoryBrowser($tree, &$skin) {
 637                 $return = '';
 638                 foreach ($tree as $element => $parent) {
 639                         if (empty($parent)) {
 640                                 # element start a new list
 641                                 $return .= "\n";
 642                         } else {
 643                                 # grab the others elements
 644                                 $return .= Skin::drawCategoryBrowser($parent, $skin) . ' &gt; ';
 645                         }
 646                         # add our current element to the list
 647                         $eltitle = Title::NewFromText($element);
 648                         $return .=  $skin->makeLinkObj( $eltitle, $eltitle->getText() ) ;
 649                 }
 650                 return $return;
 651         }
 652
 653         function getCategories() {
 654                 $catlinks=$this->getCategoryLinks();
 655                 if(!empty($catlinks)) {
 656                         return "<p class='catlinks'>{$catlinks}</p>";
 657                 }
 658         }
 659
 660         function getQuickbarCompensator( $rows = 1 ) {
 661                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 662         }
 663
 664         /**
 665          * This gets called shortly before the \</body\> tag.
 666          * @return String HTML to be put before \</body\>
 667          */
 668         function afterContent() {
 669                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 670                 return $printfooter . $this->doAfterContent();
 671         }
 672
 673         /**
 674          * This gets called shortly before the \</body\> tag.
 675          * @return String HTML-wrapped JS code to be put before \</body\>
 676          */
 677         function bottomScripts() {
 678                 global $wgJsMimeType;
 679                 return "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 680         }
 681
 682         /** @return string Retrievied from HTML text */
 683         function printSource() {
 684                 global $wgTitle;
 685                 $url = htmlspecialchars( $wgTitle->getFullURL() );
 686                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 687         }
 688
 689         function printFooter() {
 690                 return "<p>" .  $this->printSource() .
 691                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 692         }
 693
 694         /** overloaded by derived classes */
 695         function doAfterContent() { }
 696
 697         function pageTitleLinks() {
 698                 global $wgOut, $wgTitle, $wgUser, $wgRequest;
 699
 700                 $oldid = $wgRequest->getVal( 'oldid' );
 701                 $diff = $wgRequest->getVal( 'diff' );
 702                 $action = $wgRequest->getText( 'action' );
 703
 704                 $s = $this->printableLink();
 705                 $disclaimer = $this->disclaimerLink(); # may be empty
 706                 if( $disclaimer ) {
 707                         $s .= ' | ' . $disclaimer;
 708                 }
 709                 $privacy = $this->privacyLink(); # may be empty too
 710                 if( $privacy ) {
 711                         $s .= ' | ' . $privacy;
 712                 }
 713
 714                 if ( $wgOut->isArticleRelated() ) {
 715                         if ( $wgTitle->getNamespace() == NS_IMAGE ) {
 716                                 $name = $wgTitle->getDBkey();
 717                                 $image = new Image( $wgTitle );
 718                                 if( $image->exists() ) {
 719                                         $link = htmlspecialchars( $image->getURL() );
 720                                         $style = $this->getInternalLinkAttributes( $link, $name );
 721                                         $s .= " | <a href=\"{$link}\"{$style}>{$name}</a>";
 722                                 }
 723                         }
 724                 }
 725                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 726                         $s .= ' | ' . $this->makeKnownLinkObj( $wgTitle,
 727                                         wfMsg( 'currentrev' ) );
 728                 }
 729
 730                 if ( $wgUser->getNewtalk() ) {
 731                         # do not show "You have new messages" text when we are viewing our
 732                         # own talk page
 733                         if( !$wgTitle->equals( $wgUser->getTalkPage() ) ) {
 734                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessageslink' ), 'redirect=no' );
 735                                 $dl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessagesdifflink' ), 'diff=cur' );
 736                                 $s.= ' | <strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 737                                 # disable caching
 738                                 $wgOut->setSquidMaxage(0);
 739                                 $wgOut->enableClientCache(false);
 740                         }
 741                 }
 742
 743                 $undelete = $this->getUndeleteLink();
 744                 if( !empty( $undelete ) ) {
 745                         $s .= ' | '.$undelete;
 746                 }
 747                 return $s;
 748         }
 749
 750         function getUndeleteLink() {
 751                 global $wgUser, $wgTitle, $wgContLang, $action;
 752                 if(     $wgUser->isAllowed( 'deletedhistory' ) &&
 753                         (($wgTitle->getArticleId() == 0) || ($action == "history")) &&
 754                         ($n = $wgTitle->isDeleted() ) )
 755                 {
 756                         if ( $wgUser->isAllowed( 'delete' ) ) {
 757                                 $msg = 'thisisdeleted';
 758                         } else {
 759                                 $msg = 'viewdeleted';
 760                         }
 761                         return wfMsg( $msg,
 762                                 $this->makeKnownLinkObj(
 763                                         SpecialPage::getTitleFor( 'Undelete', $wgTitle->getPrefixedDBkey() ),
 764                                         wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $n ) ) );
 765                 }
 766                 return '';
 767         }
 768
 769         function printableLink() {
 770                 global $wgOut, $wgFeedClasses, $wgRequest;
 771
 772                 $baseurl = $_SERVER['REQUEST_URI'];
 773                 if( strpos( '?', $baseurl ) == false ) {
 774                         $baseurl .= '?';
 775                 } else {
 776                         $baseurl .= '&';
 777                 }
 778                 $baseurl = htmlspecialchars( $baseurl );
 779                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
 780
 781                 $s = "<a href=\"$printurl\">" . wfMsg( 'printableversion' ) . '</a>';
 782                 if( $wgOut->isSyndicated() ) {
 783                         foreach( $wgFeedClasses as $format => $class ) {
 784                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
 785                                 $s .= " | <a href=\"$feedurl\">{$format}</a>";
 786                         }
 787                 }
 788                 return $s;
 789         }
 790
 791         function pageTitle() {
 792                 global $wgOut;
 793                 $s = '<h1 class="pagetitle">' . htmlspecialchars( $wgOut->getPageTitle() ) . '</h1>';
 794                 return $s;
 795         }
 796
 797         function pageSubtitle() {
 798                 global $wgOut;
 799
 800                 $sub = $wgOut->getSubtitle();
 801                 if ( '' == $sub ) {
 802                         global $wgExtraSubtitle;
 803                         $sub = wfMsg( 'tagline' ) . $wgExtraSubtitle;
 804                 }
 805                 $subpages = $this->subPageSubtitle();
 806                 $sub .= !empty($subpages)?"</p><p class='subpages'>$subpages":'';
 807                 $s = "<p class='subtitle'>{$sub}</p>\n";
 808                 return $s;
 809         }
 810
 811         function subPageSubtitle() {
 812                 global $wgOut,$wgTitle,$wgNamespacesWithSubpages;
 813                 $subpages = '';
 814                 if($wgOut->isArticle() && !empty($wgNamespacesWithSubpages[$wgTitle->getNamespace()])) {
 815                         $ptext=$wgTitle->getPrefixedText();
 816                         if(preg_match('/\//',$ptext)) {
 817                                 $links = explode('/',$ptext);
 818                                 $c = 0;
 819                                 $growinglink = '';
 820                                 foreach($links as $link) {
 821                                         $c++;
 822                                         if ($c<count($links)) {
 823                                                 $growinglink .= $link;
 824                                                 $getlink = $this->makeLink( $growinglink, htmlspecialchars( $link ) );
 825                                                 if(preg_match('/class="new"/i',$getlink)) { break; } # this is a hack, but it saves time
 826                                                 if ($c>1) {
 827                                                         $subpages .= ' | ';
 828                                                 } else  {
 829                                                         $subpages .= '&lt; ';
 830                                                 }
 831                                                 $subpages .= $getlink;
 832                                                 $growinglink .= '/';
 833                                         }
 834                                 }
 835                         }
 836                 }
 837                 return $subpages;
 838         }
 839
 840         function nameAndLogin() {
 841                 global $wgUser, $wgTitle, $wgLang, $wgContLang, $wgShowIPinHeader;
 842
 843                 $lo = $wgContLang->specialPage( 'Userlogout' );
 844
 845                 $s = '';
 846                 if ( $wgUser->isAnon() ) {
 847                         if( $wgShowIPinHeader && isset( $_COOKIE[ini_get('session.name')] ) ) {
 848                                 $n = wfGetIP();
 849
 850                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 851                                   $wgLang->getNsText( NS_TALK ) );
 852
 853                                 $s .= $n . ' ('.$tl.')';
 854                         } else {
 855                                 $s .= wfMsg('notloggedin');
 856                         }
 857
 858                         $rt = $wgTitle->getPrefixedURL();
 859                         if ( 0 == strcasecmp( urlencode( $lo ), $rt ) ) {
 860                                 $q = '';
 861                         } else { $q = "returnto={$rt}"; }
 862
 863                         $s .= "\n<br />" . $this->makeKnownLinkObj(
 864                                 SpecialPage::getTitleFor( 'Userlogin' ),
 865                                 wfMsg( 'login' ), $q );
 866                 } else {
 867                         $n = $wgUser->getName();
 868                         $rt = $wgTitle->getPrefixedURL();
 869                         $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 870                           $wgLang->getNsText( NS_TALK ) );
 871
 872                         $tl = " ({$tl})";
 873
 874                         $s .= $this->makeKnownLinkObj( $wgUser->getUserPage(),
 875                           $n ) . "{$tl}<br />" .
 876                           $this->makeKnownLinkObj( SpecialPage::getTitleFor( 'Userlogout' ), wfMsg( 'logout' ),
 877                           "returnto={$rt}" ) . ' | ' .
 878                           $this->specialLink( 'preferences' );
 879                 }
 880                 $s .= ' | ' . $this->makeKnownLink( wfMsgForContent( 'helppage' ),
 881                   wfMsg( 'help' ) );
 882
 883                 return $s;
 884         }
 885
 886         function getSearchLink() {
 887                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 888                 return $searchPage->getLocalURL();
 889         }
 890
 891         function escapeSearchLink() {
 892                 return htmlspecialchars( $this->getSearchLink() );
 893         }
 894
 895         function searchForm() {
 896                 global $wgRequest;
 897                 $search = $wgRequest->getText( 'search' );
 898
 899                 $s = '<form name="search" class="inline" method="post" action="'
 900                   . $this->escapeSearchLink() . "\">\n"
 901                   . '<input type="text" name="search" size="19" value="'
 902                   . htmlspecialchars(substr($search,0,256)) . "\" />\n"
 903                   . '<input type="submit" name="go" value="' . wfMsg ('searcharticle') . '" />&nbsp;'
 904                   . '<input type="submit" name="fulltext" value="' . wfMsg ('searchbutton') . "\" />\n</form>";
 905
 906                 return $s;
 907         }
 908
 909         function topLinks() {
 910                 global $wgOut;
 911                 $sep = " |\n";
 912
 913                 $s = $this->mainPageLink() . $sep
 914                   . $this->specialLink( 'recentchanges' );
 915
 916                 if ( $wgOut->isArticleRelated() ) {
 917                         $s .=  $sep . $this->editThisPage()
 918                           . $sep . $this->historyLink();
 919                 }
 920                 # Many people don't like this dropdown box
 921                 #$s .= $sep . $this->specialPagesList();
 922
 923                 $s .= $this->variantLinks();
 924
 925                 $s .= $this->extensionTabLinks();
 926
 927                 return $s;
 928         }
 929
 930         /**
 931          * Compatibility for extensions adding functionality through tabs.
 932          * Eventually these old skins should be replaced with SkinTemplate-based
 933          * versions, sigh...
 934          * @return string
 935          */
 936         function extensionTabLinks() {
 937                 $tabs = array();
 938                 $s = '';
 939                 wfRunHooks( 'SkinTemplateTabs', array( $this, &$tabs ) );
 940                 foreach( $tabs as $tab ) {
 941                         $s .= ' | ' . Xml::element( 'a',
 942                                 array( 'href' => $tab['href'] ),
 943                                 $tab['text'] );
 944                 }
 945                 return $s;
 946         }
 947
 948         /**
 949          * Language/charset variant links for classic-style skins
 950          * @return string
 951          */
 952         function variantLinks() {
 953                 $s = '';
 954                 /* show links to different language variants */
 955                 global $wgDisableLangConversion, $wgContLang, $wgTitle;
 956                 $variants = $wgContLang->getVariants();
 957                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
 958                         foreach( $variants as $code ) {
 959                                 $varname = $wgContLang->getVariantname( $code );
 960                                 if( $varname == 'disable' )
 961                                         continue;
 962                                 $s .= ' | <a href="' . $wgTitle->escapeLocalUrl( 'variant=' . $code ) . '">' . htmlspecialchars( $varname ) . '</a>';
 963                         }
 964                 }
 965                 return $s;
 966         }
 967
 968         function bottomLinks() {
 969                 global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
 970                 $sep = " |\n";
 971
 972                 $s = '';
 973                 if ( $wgOut->isArticleRelated() ) {
 974                         $s .= '<strong>' . $this->editThisPage() . '</strong>';
 975                         if ( $wgUser->isLoggedIn() ) {
 976                                 $s .= $sep . $this->watchThisPage();
 977                         }
 978                         $s .= $sep . $this->talkLink()
 979                           . $sep . $this->historyLink()
 980                           . $sep . $this->whatLinksHere()
 981                           . $sep . $this->watchPageLinksLink();
 982
 983                         if ($wgUseTrackbacks)
 984                                 $s .= $sep . $this->trackbackLink();
 985
 986                         if ( $wgTitle->getNamespace() == NS_USER
 987                             || $wgTitle->getNamespace() == NS_USER_TALK )
 988
 989                         {
 990                                 $id=User::idFromName($wgTitle->getText());
 991                                 $ip=User::isIP($wgTitle->getText());
 992
 993                                 if($id || $ip) { # both anons and non-anons have contri list
 994                                         $s .= $sep . $this->userContribsLink();
 995                                 }
 996                                 if( $this->showEmailUser( $id ) ) {
 997                                         $s .= $sep . $this->emailUserLink();
 998                                 }
 999                         }
1000                         if ( $wgTitle->getArticleId() ) {
1001                                 $s .= "\n<br />";
1002                                 if($wgUser->isAllowed('delete')) { $s .= $this->deleteThisPage(); }
1003                                 if($wgUser->isAllowed('protect')) { $s .= $sep . $this->protectThisPage(); }
1004                                 if($wgUser->isAllowed('move')) { $s .= $sep . $this->moveThisPage(); }
1005                         }
1006                         $s .= "<br />\n" . $this->otherLanguages();
1007                 }
1008                 return $s;
1009         }
1010
1011         function pageStats() {
1012                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
1013                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgTitle, $wgPageShowWatchingUsers;
1014
1015                 $oldid = $wgRequest->getVal( 'oldid' );
1016                 $diff = $wgRequest->getVal( 'diff' );
1017                 if ( ! $wgOut->isArticle() ) { return ''; }
1018                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
1019                 if ( 0 == $wgArticle->getID() ) { return ''; }
1020
1021                 $s = '';
1022                 if ( !$wgDisableCounters ) {
1023                         $count = $wgLang->formatNum( $wgArticle->getCount() );
1024                         if ( $count ) {
1025                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
1026                         }
1027                 }
1028
1029                 if (isset($wgMaxCredits) && $wgMaxCredits != 0) {
1030                     require_once('Credits.php');
1031                     $s .= ' ' . getCredits($wgArticle, $wgMaxCredits, $wgShowCreditsIfMax);
1032                 } else {
1033                     $s .= $this->lastModified();
1034                 }
1035
1036                 if ($wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
1037                         $dbr =& wfGetDB( DB_SLAVE );
1038                         $watchlist = $dbr->tableName( 'watchlist' );
1039                         $sql = "SELECT COUNT(*) AS n FROM $watchlist
1040                                 WHERE wl_title='" . $dbr->strencode($wgTitle->getDBKey()) .
1041                                 "' AND  wl_namespace=" . $wgTitle->getNamespace() ;
1042                         $res = $dbr->query( $sql, 'Skin::pageStats');
1043                         $x = $dbr->fetchObject( $res );
1044                         $s .= ' ' . wfMsg('number_of_watching_users_pageview', $x->n );
1045                 }
1046
1047                 return $s . ' ' .  $this->getCopyright();
1048         }
1049
1050         function getCopyright( $type = 'detect' ) {
1051                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
1052
1053                 if ( $type == 'detect' ) {
1054                         $oldid = $wgRequest->getVal( 'oldid' );
1055                         $diff = $wgRequest->getVal( 'diff' );
1056
1057                         if ( !is_null( $oldid ) && is_null( $diff ) && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1058                                 $type = 'history';
1059                         } else {
1060                                 $type = 'normal';
1061                         }
1062                 }
1063
1064                 if ( $type == 'history' ) {
1065                         $msg = 'history_copyright';
1066                 } else {
1067                         $msg = 'copyright';
1068                 }
1069
1070                 $out = '';
1071                 if( $wgRightsPage ) {
1072                         $link = $this->makeKnownLink( $wgRightsPage, $wgRightsText );
1073                 } elseif( $wgRightsUrl ) {
1074                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1075                 } else {
1076                         # Give up now
1077                         return $out;
1078                 }
1079                 $out .= wfMsgForContent( $msg, $link );
1080                 return $out;
1081         }
1082
1083         function getCopyrightIcon() {
1084                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1085                 $out = '';
1086                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1087                         $out = $wgCopyrightIcon;
1088                 } else if ( $wgRightsIcon ) {
1089                         $icon = htmlspecialchars( $wgRightsIcon );
1090                         if ( $wgRightsUrl ) {
1091                                 $url = htmlspecialchars( $wgRightsUrl );
1092                                 $out .= '<a href="'.$url.'">';
1093                         }
1094                         $text = htmlspecialchars( $wgRightsText );
1095                         $out .= "<img src=\"$icon\" alt='$text' />";
1096                         if ( $wgRightsUrl ) {
1097                                 $out .= '</a>';
1098                         }
1099                 }
1100                 return $out;
1101         }
1102
1103         function getPoweredBy() {
1104                 global $wgStylePath;
1105                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1106                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="Powered by MediaWiki" /></a>';
1107                 return $img;
1108         }
1109
1110         function lastModified() {
1111                 global $wgLang, $wgArticle, $wgLoadBalancer;
1112
1113                 $timestamp = $wgArticle->getTimestamp();
1114                 if ( $timestamp ) {
1115                         $d = $wgLang->date( $timestamp, true );
1116                         $t = $wgLang->time( $timestamp, true );
1117                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1118                 } else {
1119                         $s = '';
1120                 }
1121                 if ( $wgLoadBalancer->getLaggedSlaveMode() ) {
1122                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1123                 }
1124                 return $s;
1125         }
1126
1127         function logoText( $align = '' ) {
1128                 if ( '' != $align ) { $a = " align='{$align}'"; }
1129                 else { $a = ''; }
1130
1131                 $mp = wfMsg( 'mainpage' );
1132                 $mptitle = Title::newMainPage();
1133                 $url = ( is_object($mptitle) ? $mptitle->escapeLocalURL() : '' );
1134
1135                 $logourl = $this->getLogo();
1136                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1137                 return $s;
1138         }
1139
1140         /**
1141          * show a drop-down box of special pages
1142          */
1143         function specialPagesList() {
1144                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1145                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1146                 foreach ( $pages as $name => $page ) {
1147                         $pages[$name] = $page->getDescription();
1148                 }
1149
1150                 $go = wfMsg( 'go' );
1151                 $sp = wfMsg( 'specialpages' );
1152                 $spp = $wgContLang->specialPage( 'Specialpages' );
1153
1154                 $s = '<form id="specialpages" method="get" class="inline" ' .
1155                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1156                 $s .= "<select name=\"wpDropdown\">\n";
1157                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1158
1159
1160                 foreach ( $pages as $name => $desc ) {
1161                         $p = $wgContLang->specialPage( $name );
1162                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1163                 }
1164                 $s .= "</select>\n";
1165                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1166                 $s .= "</form>\n";
1167                 return $s;
1168         }
1169
1170         function mainPageLink() {
1171                 $s = $this->makeKnownLinkObj( Title::newMainPage(), wfMsg( 'mainpage' ) );
1172                 return $s;
1173         }
1174
1175         function copyrightLink() {
1176                 $s = $this->makeKnownLink( wfMsgForContent( 'copyrightpage' ),
1177                   wfMsg( 'copyrightpagename' ) );
1178                 return $s;
1179         }
1180
1181         function privacyLink() {
1182                 $privacy = wfMsg( 'privacy' );
1183                 if ($privacy == '-') {
1184                         return '';
1185                 } else {
1186                         return $this->makeKnownLink( wfMsgForContent( 'privacypage' ), $privacy);
1187                 }
1188         }
1189
1190         function aboutLink() {
1191                 $s = $this->makeKnownLink( wfMsgForContent( 'aboutpage' ),
1192                   wfMsg( 'aboutsite' ) );
1193                 return $s;
1194         }
1195
1196         function disclaimerLink() {
1197                 $disclaimers = wfMsg( 'disclaimers' );
1198                 if ($disclaimers == '-') {
1199                         return '';
1200                 } else {
1201                         return $this->makeKnownLink( wfMsgForContent( 'disclaimerpage' ),
1202                                                      $disclaimers );
1203                 }
1204         }
1205
1206         function editThisPage() {
1207                 global $wgOut, $wgTitle;
1208
1209                 if ( ! $wgOut->isArticleRelated() ) {
1210                         $s = wfMsg( 'protectedpage' );
1211                 } else {
1212                         if ( $wgTitle->userCanEdit() ) {
1213                                 $t = wfMsg( 'editthispage' );
1214                         } else {
1215                                 $t = wfMsg( 'viewsource' );
1216                         }
1217
1218                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $this->editUrlOptions() );
1219                 }
1220                 return $s;
1221         }
1222
1223         /**
1224          * Return URL options for the 'edit page' link.
1225          * This may include an 'oldid' specifier, if the current page view is such.
1226          *
1227          * @return string
1228          * @private
1229          */
1230         function editUrlOptions() {
1231                 global $wgArticle;
1232
1233                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1234                         return "action=edit&oldid=" . intval( $this->mRevisionId );
1235                 } else {
1236                         return "action=edit";
1237                 }
1238         }
1239
1240         function deleteThisPage() {
1241                 global $wgUser, $wgTitle, $wgRequest;
1242
1243                 $diff = $wgRequest->getVal( 'diff' );
1244                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('delete') ) {
1245                         $t = wfMsg( 'deletethispage' );
1246
1247                         $s = $this->makeKnownLinkObj( $wgTitle, $t, 'action=delete' );
1248                 } else {
1249                         $s = '';
1250                 }
1251                 return $s;
1252         }
1253
1254         function protectThisPage() {
1255                 global $wgUser, $wgTitle, $wgRequest;
1256
1257                 $diff = $wgRequest->getVal( 'diff' );
1258                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1259                         if ( $wgTitle->isProtected() ) {
1260                                 $t = wfMsg( 'unprotectthispage' );
1261                                 $q = 'action=unprotect';
1262                         } else {
1263                                 $t = wfMsg( 'protectthispage' );
1264                                 $q = 'action=protect';
1265                         }
1266                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1267                 } else {
1268                         $s = '';
1269                 }
1270                 return $s;
1271         }
1272
1273         function watchThisPage() {
1274                 global $wgOut, $wgTitle;
1275
1276                 if ( $wgOut->isArticleRelated() ) {
1277                         if ( $wgTitle->userIsWatching() ) {
1278                                 $t = wfMsg( 'unwatchthispage' );
1279                                 $q = 'action=unwatch';
1280                         } else {
1281                                 $t = wfMsg( 'watchthispage' );
1282                                 $q = 'action=watch';
1283                         }
1284                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1285                 } else {
1286                         $s = wfMsg( 'notanarticle' );
1287                 }
1288                 return $s;
1289         }
1290
1291         function moveThisPage() {
1292                 global $wgTitle;
1293
1294                 if ( $wgTitle->userCanMove() ) {
1295                         return $this->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
1296                           wfMsg( 'movethispage' ), 'target=' . $wgTitle->getPrefixedURL() );
1297                 } else {
1298                         // no message if page is protected - would be redundant
1299                         return '';
1300                 }
1301         }
1302
1303         function historyLink() {
1304                 global $wgTitle;
1305
1306                 return $this->makeKnownLinkObj( $wgTitle,
1307                   wfMsg( 'history' ), 'action=history' );
1308         }
1309
1310         function whatLinksHere() {
1311                 global $wgTitle;
1312
1313                 return $this->makeKnownLinkObj(
1314                         SpecialPage::getTitleFor( 'Whatlinkshere', $wgTitle->getPrefixedDBkey() ),
1315                         wfMsg( 'whatlinkshere' ) );
1316         }
1317
1318         function userContribsLink() {
1319                 global $wgTitle;
1320
1321                 return $this->makeKnownLinkObj(
1322                         SpecialPage::getTitleFor( 'Contributions', $wgTitle->getDBkey() ),
1323                         wfMsg( 'contributions' ) );
1324         }
1325
1326         function showEmailUser( $id ) {
1327                 global $wgEnableEmail, $wgEnableUserEmail, $wgUser;
1328                 return $wgEnableEmail &&
1329                        $wgEnableUserEmail &&
1330                        $wgUser->isLoggedIn() && # show only to signed in users
1331                        0 != $id; # we can only email to non-anons ..
1332 #                      '' != $id->getEmail() && # who must have an email address stored ..
1333 #                      0 != $id->getEmailauthenticationtimestamp() && # .. which is authenticated
1334 #                      1 != $wgUser->getOption('disablemail'); # and not disabled
1335         }
1336
1337         function emailUserLink() {
1338                 global $wgTitle;
1339
1340                 return $this->makeKnownLinkObj(
1341                         SpecialPage::getTitleFor( 'Emailuser', $wgTitle->getDBkey() ),
1342                         wfMsg( 'emailuser' ) );
1343         }
1344
1345         function watchPageLinksLink() {
1346                 global $wgOut, $wgTitle;
1347
1348                 if ( ! $wgOut->isArticleRelated() ) {
1349                         return '(' . wfMsg( 'notanarticle' ) . ')';
1350                 } else {
1351                         return $this->makeKnownLinkObj(
1352                                 SpecialPage::getTitleFor( 'Recentchangeslinked', $wgTitle->getPrefixedDBkey() ),
1353                                 wfMsg( 'recentchangeslinked' ) );
1354                 }
1355         }
1356
1357         function trackbackLink() {
1358                 global $wgTitle;
1359
1360                 return "<a href=\"" . $wgTitle->trackbackURL() . "\">"
1361                         . wfMsg('trackbacklink') . "</a>";
1362         }
1363
1364         function otherLanguages() {
1365                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1366
1367                 if ( $wgHideInterlanguageLinks ) {
1368                         return '';
1369                 }
1370
1371                 $a = $wgOut->getLanguageLinks();
1372                 if ( 0 == count( $a ) ) {
1373                         return '';
1374                 }
1375
1376                 $s = wfMsg( 'otherlanguages' ) . ': ';
1377                 $first = true;
1378                 if($wgContLang->isRTL()) $s .= '<span dir="LTR">';
1379                 foreach( $a as $l ) {
1380                         if ( ! $first ) { $s .= ' | '; }
1381                         $first = false;
1382
1383                         $nt = Title::newFromText( $l );
1384                         $url = $nt->escapeFullURL();
1385                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1386
1387                         if ( '' == $text ) { $text = $l; }
1388                         $style = $this->getExternalLinkAttributes( $l, $text );
1389                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1390                 }
1391                 if($wgContLang->isRTL()) $s .= '</span>';
1392                 return $s;
1393         }
1394
1395         function bugReportsLink() {
1396                 $s = $this->makeKnownLink( wfMsgForContent( 'bugreportspage' ),
1397                   wfMsg( 'bugreports' ) );
1398                 return $s;
1399         }
1400
1401         function dateLink() {
1402                 $t1 = Title::newFromText( gmdate( 'F j' ) );
1403                 $t2 = Title::newFromText( gmdate( 'Y' ) );
1404
1405                 $id = $t1->getArticleID();
1406
1407                 if ( 0 == $id ) {
1408                         $s = $this->makeBrokenLink( $t1->getText() );
1409                 } else {
1410                         $s = $this->makeKnownLink( $t1->getText() );
1411                 }
1412                 $s .= ', ';
1413
1414                 $id = $t2->getArticleID();
1415
1416                 if ( 0 == $id ) {
1417                         $s .= $this->makeBrokenLink( $t2->getText() );
1418                 } else {
1419                         $s .= $this->makeKnownLink( $t2->getText() );
1420                 }
1421                 return $s;
1422         }
1423
1424         function talkLink() {
1425                 global $wgTitle;
1426
1427                 if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
1428                         # No discussion links for special pages
1429                         return '';
1430                 }
1431
1432                 if( $wgTitle->isTalkPage() ) {
1433                         $link = $wgTitle->getSubjectPage();
1434                         switch( $link->getNamespace() ) {
1435                                 case NS_MAIN:
1436                                         $text = wfMsg( 'articlepage' );
1437                                         break;
1438                                 case NS_USER:
1439                                         $text = wfMsg( 'userpage' );
1440                                         break;
1441                                 case NS_PROJECT:
1442                                         $text = wfMsg( 'projectpage' );
1443                                         break;
1444                                 case NS_IMAGE:
1445                                         $text = wfMsg( 'imagepage' );
1446                                         break;
1447                                 case NS_MEDIAWIKI:
1448                                         $text = wfMsg( 'mediawikipage' );
1449                                         break;
1450                                 case NS_TEMPLATE:
1451                                         $text = wfMsg( 'templatepage' );
1452                                         break;
1453                                 case NS_HELP:
1454                                         $text = wfMsg( 'viewhelppage' );
1455                                         break;
1456                                 case NS_CATEGORY:
1457                                         $text = wfMsg( 'categorypage' );
1458                                         break;
1459                                 default:
1460                                         $text = wfMsg( 'articlepage' );
1461                         }
1462                 } else {
1463                         $link = $wgTitle->getTalkPage();
1464                         $text = wfMsg( 'talkpage' );
1465                 }
1466
1467                 $s = $this->makeLinkObj( $link, $text );
1468
1469                 return $s;
1470         }
1471
1472         function commentLink() {
1473                 global $wgTitle, $wgOut;
1474
1475                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
1476                         return '';
1477                 }
1478
1479                 # __NEWSECTIONLINK___ changes behaviour here
1480                 # If it's present, the link points to this page, otherwise
1481                 # it points to the talk page
1482                 if( $wgTitle->isTalkPage() ) {
1483                         $title =& $wgTitle;
1484                 } elseif( $wgOut->showNewSectionLink() ) {
1485                         $title =& $wgTitle;
1486                 } else {
1487                         $title =& $wgTitle->getTalkPage();
1488                 }
1489
1490                 return $this->makeKnownLinkObj( $title, wfMsg( 'postcomment' ), 'action=edit&section=new' );
1491         }
1492
1493         /* these are used extensively in SkinTemplate, but also some other places */
1494         static function makeMainPageUrl( $urlaction = '' ) {
1495                 $title = Title::newMainPage();
1496                 self::checkTitle( $title, $name );
1497                 return $title->getLocalURL( $urlaction );
1498         }
1499
1500         static function makeSpecialUrl( $name, $urlaction = '' ) {
1501                 $title = SpecialPage::getTitleFor( $name );
1502                 return $title->getLocalURL( $urlaction );
1503         }
1504
1505         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1506                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1507                 return $title->getLocalURL( $urlaction );
1508         }
1509
1510         static function makeI18nUrl( $name, $urlaction = '' ) {
1511                 $title = Title::newFromText( wfMsgForContent( $name ) );
1512                 self::checkTitle( $title, $name );
1513                 return $title->getLocalURL( $urlaction );
1514         }
1515
1516         static function makeUrl( $name, $urlaction = '' ) {
1517                 $title = Title::newFromText( $name );
1518                 self::checkTitle( $title, $name );
1519                 return $title->getLocalURL( $urlaction );
1520         }
1521
1522         # If url string starts with http, consider as external URL, else
1523         # internal
1524         static function makeInternalOrExternalUrl( $name ) {
1525                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1526                         return $name;
1527                 } else {
1528                         return self::makeUrl( $name );
1529                 }
1530         }
1531
1532         # this can be passed the NS number as defined in Language.php
1533         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1534                 $title = Title::makeTitleSafe( $namespace, $name );
1535                 self::checkTitle( $title, $name );
1536                 return $title->getLocalURL( $urlaction );
1537         }
1538
1539         /* these return an array with the 'href' and boolean 'exists' */
1540         static function makeUrlDetails( $name, $urlaction = '' ) {
1541                 $title = Title::newFromText( $name );
1542                 self::checkTitle( $title, $name );
1543                 return array(
1544                         'href' => $title->getLocalURL( $urlaction ),
1545                         'exists' => $title->getArticleID() != 0 ? true : false
1546                 );
1547         }
1548
1549         /**
1550          * Make URL details where the article exists (or at least it's convenient to think so)
1551          */
1552         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1553                 $title = Title::newFromText( $name );
1554                 self::checkTitle( $title, $name );
1555                 return array(
1556                         'href' => $title->getLocalURL( $urlaction ),
1557                         'exists' => true
1558                 );
1559         }
1560
1561         # make sure we have some title to operate on
1562         static function checkTitle( &$title, &$name ) {
1563                 if( !is_object( $title ) ) {
1564                         $title = Title::newFromText( $name );
1565                         if( !is_object( $title ) ) {
1566                                 $title = Title::newFromText( '--error: link target missing--' );
1567                         }
1568                 }
1569         }
1570
1571         /**
1572          * Build an array that represents the sidebar(s), the navigation bar among them
1573          *
1574          * @return array
1575          * @private
1576          */
1577         function buildSidebar() {
1578                 global $parserMemc, $wgEnableSidebarCache;
1579                 global $wgLang, $wgContLang;
1580
1581                 $fname = 'SkinTemplate::buildSidebar';
1582
1583                 wfProfileIn( $fname );
1584
1585                 $key = wfMemcKey( 'sidebar' );
1586                 $cacheSidebar = $wgEnableSidebarCache &&
1587                         ($wgLang->getCode() == $wgContLang->getCode());
1588
1589                 if ($cacheSidebar) {
1590                         $cachedsidebar = $parserMemc->get( $key );
1591                         if ($cachedsidebar!="") {
1592                                 wfProfileOut($fname);
1593                                 return $cachedsidebar;
1594                         }
1595                 }
1596
1597                 $bar = array();
1598                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
1599                 foreach ($lines as $line) {
1600                         if (strpos($line, '*') !== 0)
1601                                 continue;
1602                         if (strpos($line, '**') !== 0) {
1603                                 $line = trim($line, '* ');
1604                                 $heading = $line;
1605                         } else {
1606                                 if (strpos($line, '|') !== false) { // sanity check
1607                                         $line = explode( '|' , trim($line, '* '), 2 );
1608                                         $link = wfMsgForContent( $line[0] );
1609                                         if ($link == '-')
1610                                                 continue;
1611                                         if (wfEmptyMsg($line[1], $text = wfMsg($line[1])))
1612                                                 $text = $line[1];
1613                                         if (wfEmptyMsg($line[0], $link))
1614                                                 $link = $line[0];
1615
1616                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1617                                                 $href = $link;
1618                                         } else {
1619                                                 $title = Title::newFromText( $link );
1620                                                 if ( $title ) {
1621                                                         $title = $title->fixSpecialName();
1622                                                         $href = $title->getLocalURL();
1623                                                 } else {
1624                                                         $href = 'INVALID-TITLE';
1625                                                 }
1626                                         }
1627
1628                                         $bar[$heading][] = array(
1629                                                 'text' => $text,
1630                                                 'href' => $href,
1631                                                 'id' => 'n-' . strtr($line[1], ' ', '-'),
1632                                                 'active' => false
1633                                         );
1634                                 } else { continue; }
1635                         }
1636                 }
1637                 if ($cacheSidebar)
1638                         $parserMemc->set( $key, $bar, 86400 );
1639                 wfProfileOut( $fname );
1640                 return $bar;
1641         }
1642 }
1643 ?>