includes/Skin.php

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