includes/Skin.php

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