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