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';
 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, $wgSitename, $wgLanguageCode, $wgLanguageNames;
 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                         'title' => "$wgSitename ({$wgLanguageNames[$wgLanguageCode]})",
 175                 ));
 176
 177                 $this->addMetadataLinks($out);
 178
 179                 $this->mRevisionId = $out->mRevisionId;
 180
 181                 $this->preloadExistence();
 182
 183                 wfProfileOut( $fname );
 184         }
 185
 186         /**
 187          * Preload the existence of three commonly-requested pages in a single query
 188          */
 189         function preloadExistence() {
 190                 global $wgUser, $wgTitle;
 191
 192                 if ( $wgTitle->isTalkPage() ) {
 193                         $otherTab = $wgTitle->getSubjectPage();
 194                 } else {
 195                         $otherTab = $wgTitle->getTalkPage();
 196                 }
 197                 $lb = new LinkBatch( array(
 198                         $wgUser->getUserPage(),
 199                         $wgUser->getTalkPage(),
 200                         $otherTab
 201                 ));
 202                 $lb->execute();
 203         }
 204
 205         function addMetadataLinks( &$out ) {
 206                 global $wgTitle, $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 207                 global $wgRightsPage, $wgRightsUrl;
 208
 209                 if( $out->isArticleRelated() ) {
 210                         # note: buggy CC software only reads first "meta" link
 211                         if( $wgEnableCreativeCommonsRdf ) {
 212                                 $out->addMetadataLink( array(
 213                                         'title' => 'Creative Commons',
 214                                         'type' => 'application/rdf+xml',
 215                                         'href' => $wgTitle->getLocalURL( 'action=creativecommons') ) );
 216                         }
 217                         if( $wgEnableDublinCoreRdf ) {
 218                                 $out->addMetadataLink( array(
 219                                         'title' => 'Dublin Core',
 220                                         'type' => 'application/rdf+xml',
 221                                         'href' => $wgTitle->getLocalURL( 'action=dublincore' ) ) );
 222                         }
 223                 }
 224                 $copyright = '';
 225                 if( $wgRightsPage ) {
 226                         $copy = Title::newFromText( $wgRightsPage );
 227                         if( $copy ) {
 228                                 $copyright = $copy->getLocalURL();
 229                         }
 230                 }
 231                 if( !$copyright && $wgRightsUrl ) {
 232                         $copyright = $wgRightsUrl;
 233                 }
 234                 if( $copyright ) {
 235                         $out->addLink( array(
 236                                 'rel' => 'copyright',
 237                                 'href' => $copyright ) );
 238                 }
 239         }
 240
 241         function outputPage( &$out ) {
 242                 global $wgDebugComments;
 243
 244                 wfProfileIn( 'Skin::outputPage' );
 245                 $this->initPage( $out );
 246
 247                 $out->out( $out->headElement() );
 248
 249                 $out->out( "\n<body" );
 250                 $ops = $this->getBodyOptions();
 251                 foreach ( $ops as $name => $val ) {
 252                         $out->out( " $name='$val'" );
 253                 }
 254                 $out->out( ">\n" );
 255                 if ( $wgDebugComments ) {
 256                         $out->out( "<!-- Wiki debugging output:\n" .
 257                           $out->mDebugtext . "-->\n" );
 258                 }
 259
 260                 $out->out( $this->beforeContent() );
 261
 262                 $out->out( $out->mBodytext . "\n" );
 263
 264                 $out->out( $this->afterContent() );
 265
 266                 $out->out( $this->bottomScripts() );
 267
 268                 $out->out( $out->reportTime() );
 269
 270                 $out->out( "\n</body></html>" );
 271         }
 272
 273         static function makeGlobalVariablesScript( $data ) {
 274                 $r = '<script type= "' . $data['jsmimetype'] . '">
 275                         var skin = "' . Xml::escapeJsString( $data['skinname'] ) . '";
 276                         var stylepath = "' . Xml::escapeJsString( $data['stylepath'] ) . '";
 277
 278                         var wgArticlePath = "' . Xml::escapeJsString( $data['articlepath'] ) . '";
 279                         var wgScriptPath = "' . Xml::escapeJsString( $data['scriptpath'] ) . '";
 280                         var wgServer = "' . Xml::escapeJsString( $data['serverurl'] ) . '";
 281
 282                         var wgCanonicalNamespace = "' . Xml::escapeJsString( $data['nscanonical'] ) . '";
 283                         var wgNamespaceNumber = ' . (int)$data['nsnumber'] . ';
 284                         var wgPageName = "' . Xml::escapeJsString( $data['titleprefixeddbkey'] ) . '";
 285                         var wgTitle = "' . Xml::escapeJsString( $data['titletext'] ) . '";
 286                         var wgArticleId = ' . (int)$data['articleid'] . ';
 287                         var wgIsArticle = ' . ( $data['isarticle'] ? 'true' : 'false' ) . ';
 288
 289                         var wgUserName = ' . ( $data['username'] == NULL ? 'null' : ( '"' . Xml::escapeJsString( $data['username'] ) . '"' ) ) . ';
 290                         var wgUserLanguage = "' . Xml::escapeJsString( $data['userlang'] ) . '";
 291                         var wgContentLanguage = "' . Xml::escapeJsString( $data['lang'] ) . '";
 292                 </script>
 293                 ';
 294
 295                 return $r;
 296         }
 297
 298         function getHeadScripts() {
 299                 global $wgStylePath, $wgUser, $wgAllowUserJs, $wgJsMimeType, $wgStyleVersion;
 300                 global $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgLang;
 301                 global $wgTitle, $wgCanonicalNamespaceNames, $wgOut;
 302
 303                 $nsname = @$wgCanonicalNamespaceNames[ $wgTitle->getNamespace() ];
 304                 if ( $nsname === NULL ) $nsname = $wgTitle->getNsText();
 305
 306                 $vars = array(
 307                         'jsmimetype' => $wgJsMimeType,
 308                         'skinname' => $this->getSkinName(),
 309                         'stylepath' => $wgStylePath,
 310                         'articlepath' => $wgArticlePath,
 311                         'scriptpath' => $wgScriptPath,
 312                         'serverurl' => $wgServer,
 313                         'nscanonical' => $nsname,
 314                         'nsnumber' => $wgTitle->getNamespace(),
 315                         'titleprefixeddbkey' => $wgTitle->getPrefixedDBKey(),
 316                         'titletext' => $wgTitle->getText(),
 317                         'articleid' => $wgTitle->getArticleId(),
 318                         'isarticle' => $wgOut->isArticle(),
 319                         'username' => $wgUser->isAnon() ? NULL : $wgUser->getName(),
 320                         'userlang' => $wgLang->getCode(),
 321                         'lang' => $wgContLang->getCode(),
 322                 );
 323
 324                 $r = self::makeGlobalVariablesScript( $vars );
 325
 326                 $r .= "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js?$wgStyleVersion\"></script>\n";
 327                 if( $wgAllowUserJs && $wgUser->isLoggedIn() ) {
 328                         $userpage = $wgUser->getUserPage();
 329                         $userjs = htmlspecialchars( self::makeUrl(
 330                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 331                                 'action=raw&ctype='.$wgJsMimeType));
 332                         $r .= '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>\n";
 333                 }
 334                 return $r;
 335         }
 336
 337         /**
 338          * To make it harder for someone to slip a user a fake
 339          * user-JavaScript or user-CSS preview, a random token
 340          * is associated with the login session. If it's not
 341          * passed back with the preview request, we won't render
 342          * the code.
 343          *
 344          * @param string $action
 345          * @return bool
 346          * @private
 347          */
 348         function userCanPreview( $action ) {
 349                 global $wgTitle, $wgRequest, $wgUser;
 350
 351                 if( $action != 'submit' )
 352                         return false;
 353                 if( !$wgRequest->wasPosted() )
 354                         return false;
 355                 if( !$wgTitle->userCanEditCssJsSubpage() )
 356                         return false;
 357                 return $wgUser->matchEditToken(
 358                         $wgRequest->getVal( 'wpEditToken' ) );
 359         }
 360
 361         # get the user/site-specific stylesheet, SkinTemplate loads via RawPage.php (settings are cached that way)
 362         function getUserStylesheet() {
 363                 global $wgStylePath, $wgRequest, $wgContLang, $wgSquidMaxage, $wgStyleVersion;
 364                 $sheet = $this->getStylesheet();
 365                 $action = $wgRequest->getText('action');
 366                 $s = "@import \"$wgStylePath/$sheet?$wgStyleVersion\";\n";
 367                 if($wgContLang->isRTL()) $s .= "@import \"$wgStylePath/common/common_rtl.css?$wgStyleVersion\";\n";
 368
 369                 $query = "usemsgcache=yes&action=raw&ctype=text/css&smaxage=$wgSquidMaxage";
 370                 $s .= '@import "' . self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) . "\";\n" .
 371                         '@import "' . self::makeNSUrl( ucfirst( $this->getSkinName() . '.css' ), $query, NS_MEDIAWIKI ) . "\";\n";
 372
 373                 $s .= $this->doGetUserStyles();
 374                 return $s."\n";
 375         }
 376
 377         /**
 378          * placeholder, returns generated js in monobook
 379          */
 380         function getUserJs() { return; }
 381
 382         /**
 383          * Return html code that include User stylesheets
 384          */
 385         function getUserStyles() {
 386                 $s = "<style type='text/css'>\n";
 387                 $s .= "/*/*/ /*<![CDATA[*/\n"; # <-- Hide the styles from Netscape 4 without hiding them from IE/Mac
 388                 $s .= $this->getUserStylesheet();
 389                 $s .= "/*]]>*/ /* */\n";
 390                 $s .= "</style>\n";
 391                 return $s;
 392         }
 393
 394         /**
 395          * Some styles that are set by user through the user settings interface.
 396          */
 397         function doGetUserStyles() {
 398                 global $wgUser, $wgUser, $wgRequest, $wgTitle, $wgAllowUserCss;
 399
 400                 $s = '';
 401
 402                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) { # logged in
 403                         if($wgTitle->isCssSubpage() && $this->userCanPreview( $wgRequest->getText( 'action' ) ) ) {
 404                                 $s .= $wgRequest->getText('wpTextbox1');
 405                         } else {
 406                                 $userpage = $wgUser->getUserPage();
 407                                 $s.= '@import "'.self::makeUrl(
 408                                         $userpage->getPrefixedText().'/'.$this->getSkinName().'.css',
 409                                         'action=raw&ctype=text/css').'";'."\n";
 410                         }
 411                 }
 412
 413                 return $s . $this->reallyDoGetUserStyles();
 414         }
 415
 416         function reallyDoGetUserStyles() {
 417                 global $wgUser;
 418                 $s = '';
 419                 if (($undopt = $wgUser->getOption("underline")) != 2) {
 420                         $underline = $undopt ? 'underline' : 'none';
 421                         $s .= "a { text-decoration: $underline; }\n";
 422                 }
 423                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 424                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 425                 } else {
 426                         $s .= <<<END
 427 a.new, #quickbar a.new,
 428 a.stub, #quickbar a.stub {
 429         color: inherit;
 430         text-decoration: inherit;
 431 }
 432 a.new:after, #quickbar a.new:after {
 433         content: "?";
 434         color: #CC2200;
 435         text-decoration: $underline;
 436 }
 437 a.stub:after, #quickbar a.stub:after {
 438         content: "!";
 439         color: #772233;
 440         text-decoration: $underline;
 441 }
 442 END;
 443                 }
 444                 if( $wgUser->getOption( 'justify' ) ) {
 445                         $s .= "#article, #bodyContent { text-align: justify; }\n";
 446                 }
 447                 if( !$wgUser->getOption( 'showtoc' ) ) {
 448                         $s .= "#toc { display: none; }\n";
 449                 }
 450                 if( !$wgUser->getOption( 'editsection' ) ) {
 451                         $s .= ".editsection { display: none; }\n";
 452                 }
 453                 return $s;
 454         }
 455
 456         function getBodyOptions() {
 457                 global $wgUser, $wgTitle, $wgOut, $wgRequest, $wgContLang;
 458
 459                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 460
 461                 if ( 0 != $wgTitle->getNamespace() ) {
 462                         $a = array( 'bgcolor' => '#ffffec' );
 463                 }
 464                 else $a = array( 'bgcolor' => '#FFFFFF' );
 465                 if($wgOut->isArticle() && $wgUser->getOption('editondblclick') &&
 466                   $wgTitle->userCanEdit() ) {
 467                         $t = wfMsg( 'editthispage' );
 468                         $s = $wgTitle->getFullURL( $this->editUrlOptions() );
 469                         $s = 'document.location = "' .wfEscapeJSString( $s ) .'";';
 470                         $a += array ('ondblclick' => $s);
 471
 472                 }
 473                 $a['onload'] = $wgOut->getOnloadHandler();
 474                 if( $wgUser->getOption( 'editsectiononrightclick' ) ) {
 475                         if( $a['onload'] != '' ) {
 476                                 $a['onload'] .= ';';
 477                         }
 478                         $a['onload'] .= 'setupRightClickEdit()';
 479                 }
 480                 $a['class'] = 'ns-'.$wgTitle->getNamespace().' '.($wgContLang->isRTL() ? "rtl" : "ltr");
 481                 return $a;
 482         }
 483
 484         /**
 485          * URL to the logo
 486          */
 487         function getLogo() {
 488                 global $wgLogo;
 489                 return $wgLogo;
 490         }
 491
 492         /**
 493          * This will be called immediately after the <body> tag.  Split into
 494          * two functions to make it easier to subclass.
 495          */
 496         function beforeContent() {
 497                 return $this->doBeforeContent();
 498         }
 499
 500         function doBeforeContent() {
 501                 global $wgContLang;
 502                 $fname = 'Skin::doBeforeContent';
 503                 wfProfileIn( $fname );
 504
 505                 $s = '';
 506                 $qb = $this->qbSetting();
 507
 508                 if( $langlinks = $this->otherLanguages() ) {
 509                         $rows = 2;
 510                         $borderhack = '';
 511                 } else {
 512                         $rows = 1;
 513                         $langlinks = false;
 514                         $borderhack = 'class="top"';
 515                 }
 516
 517                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 518                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 519
 520                 $shove = ($qb != 0);
 521                 $left = ($qb == 1 || $qb == 3);
 522                 if($wgContLang->isRTL()) $left = !$left;
 523
 524                 if ( !$shove ) {
 525                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 526                           $this->logoText() . '</td>';
 527                 } elseif( $left ) {
 528                         $s .= $this->getQuickbarCompensator( $rows );
 529                 }
 530                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 531                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 532
 533                 $s .= $this->topLinks() ;
 534                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 535
 536                 $r = $wgContLang->isRTL() ? "left" : "right";
 537                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 538                 $s .= $this->nameAndLogin();
 539                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 540
 541                 if ( $langlinks ) {
 542                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 543                 }
 544
 545                 if ( $shove && !$left ) { # Right
 546                         $s .= $this->getQuickbarCompensator( $rows );
 547                 }
 548                 $s .= "</tr>\n</table>\n</div>\n";
 549                 $s .= "\n<div id='article'>\n";
 550
 551                 $notice = wfGetSiteNotice();
 552                 if( $notice ) {
 553                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 554                 }
 555                 $s .= $this->pageTitle();
 556                 $s .= $this->pageSubtitle() ;
 557                 $s .= $this->getCategories();
 558                 wfProfileOut( $fname );
 559                 return $s;
 560         }
 561
 562
 563         function getCategoryLinks () {
 564                 global $wgOut, $wgTitle, $wgUseCategoryBrowser;
 565                 global $wgContLang;
 566
 567                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 568
 569                 # Separator
 570                 $sep = wfMsgHtml( 'catseparator' );
 571
 572                 // Use Unicode bidi embedding override characters,
 573                 // to make sure links don't smash each other up in ugly ways.
 574                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 575                 $embed = "<span dir='$dir'>";
 576                 $pop = '</span>';
 577                 $t = $embed . implode ( "{$pop} {$sep} {$embed}" , $wgOut->mCategoryLinks ) . $pop;
 578
 579                 $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escape' ), count( $wgOut->mCategoryLinks ) );
 580                 $s = $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Categories' ),
 581                         $msg, 'article=' . urlencode( $wgTitle->getPrefixedDBkey() ) )
 582                         . ': ' . $t;
 583
 584                 # optional 'dmoz-like' category browser. Will be shown under the list
 585                 # of categories an article belong to
 586                 if($wgUseCategoryBrowser) {
 587                         $s .= '<br /><hr />';
 588
 589                         # get a big array of the parents tree
 590                         $parenttree = $wgTitle->getParentCategoryTree();
 591                         # Skin object passed by reference cause it can not be
 592                         # accessed under the method subfunction drawCategoryBrowser
 593                         $tempout = explode("\n", Skin::drawCategoryBrowser($parenttree, $this) );
 594                         # Clean out bogus first entry and sort them
 595                         unset($tempout[0]);
 596                         asort($tempout);
 597                         # Output one per line
 598                         $s .= implode("<br />\n", $tempout);
 599                 }
 600
 601                 return $s;
 602         }
 603
 604         /** Render the array as a serie of links.
 605          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 606          * @param &skin Object: skin passed by reference
 607          * @return String separated by &gt;, terminate with "\n"
 608          */
 609         function drawCategoryBrowser($tree, &$skin) {
 610                 $return = '';
 611                 foreach ($tree as $element => $parent) {
 612                         if (empty($parent)) {
 613                                 # element start a new list
 614                                 $return .= "\n";
 615                         } else {
 616                                 # grab the others elements
 617                                 $return .= Skin::drawCategoryBrowser($parent, $skin) . ' &gt; ';
 618                         }
 619                         # add our current element to the list
 620                         $eltitle = Title::NewFromText($element);
 621                         $return .=  $skin->makeLinkObj( $eltitle, $eltitle->getText() ) ;
 622                 }
 623                 return $return;
 624         }
 625
 626         function getCategories() {
 627                 $catlinks=$this->getCategoryLinks();
 628                 if(!empty($catlinks)) {
 629                         return "<p class='catlinks'>{$catlinks}</p>";
 630                 }
 631         }
 632
 633         function getQuickbarCompensator( $rows = 1 ) {
 634                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 635         }
 636
 637         /**
 638          * This gets called shortly before the \</body\> tag.
 639          * @return String HTML to be put before \</body\>
 640          */
 641         function afterContent() {
 642                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 643                 return $printfooter . $this->doAfterContent();
 644         }
 645
 646         /**
 647          * This gets called shortly before the \</body\> tag.
 648          * @return String HTML-wrapped JS code to be put before \</body\>
 649          */
 650         function bottomScripts() {
 651                 global $wgJsMimeType;
 652                 return "\n\t\t<script type=\"$wgJsMimeType\">if (window.runOnloadHook) runOnloadHook();</script>\n";
 653         }
 654
 655         /** @return string Retrievied from HTML text */
 656         function printSource() {
 657                 global $wgTitle;
 658                 $url = htmlspecialchars( $wgTitle->getFullURL() );
 659                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 660         }
 661
 662         function printFooter() {
 663                 return "<p>" .  $this->printSource() .
 664                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 665         }
 666
 667         /** overloaded by derived classes */
 668         function doAfterContent() { }
 669
 670         function pageTitleLinks() {
 671                 global $wgOut, $wgTitle, $wgUser, $wgRequest;
 672
 673                 extract( $wgRequest->getValues( 'oldid', 'diff' ) );
 674                 $action = $wgRequest->getText( 'action' );
 675
 676                 $s = $this->printableLink();
 677                 $disclaimer = $this->disclaimerLink(); # may be empty
 678                 if( $disclaimer ) {
 679                         $s .= ' | ' . $disclaimer;
 680                 }
 681                 $privacy = $this->privacyLink(); # may be empty too
 682                 if( $privacy ) {
 683                         $s .= ' | ' . $privacy;
 684                 }
 685
 686                 if ( $wgOut->isArticleRelated() ) {
 687                         if ( $wgTitle->getNamespace() == NS_IMAGE ) {
 688                                 $name = $wgTitle->getDBkey();
 689                                 $image = new Image( $wgTitle );
 690                                 if( $image->exists() ) {
 691                                         $link = htmlspecialchars( $image->getURL() );
 692                                         $style = $this->getInternalLinkAttributes( $link, $name );
 693                                         $s .= " | <a href=\"{$link}\"{$style}>{$name}</a>";
 694                                 }
 695                         }
 696                 }
 697                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 698                         $s .= ' | ' . $this->makeKnownLinkObj( $wgTitle,
 699                                         wfMsg( 'currentrev' ) );
 700                 }
 701
 702                 if ( $wgUser->getNewtalk() ) {
 703                         # do not show "You have new messages" text when we are viewing our
 704                         # own talk page
 705                         if( !$wgTitle->equals( $wgUser->getTalkPage() ) ) {
 706                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessageslink' ), 'redirect=no' );
 707                                 $dl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessagesdifflink' ), 'diff=cur' );
 708                                 $s.= ' | <strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 709                                 # disable caching
 710                                 $wgOut->setSquidMaxage(0);
 711                                 $wgOut->enableClientCache(false);
 712                         }
 713                 }
 714
 715                 $undelete = $this->getUndeleteLink();
 716                 if( !empty( $undelete ) ) {
 717                         $s .= ' | '.$undelete;
 718                 }
 719                 return $s;
 720         }
 721
 722         function getUndeleteLink() {
 723                 global $wgUser, $wgTitle, $wgContLang, $action;
 724                 if(     $wgUser->isAllowed( 'deletedhistory' ) &&
 725                         (($wgTitle->getArticleId() == 0) || ($action == "history")) &&
 726                         ($n = $wgTitle->isDeleted() ) )
 727                 {
 728                         if ( $wgUser->isAllowed( 'delete' ) ) {
 729                                 $msg = 'thisisdeleted';
 730                         } else {
 731                                 $msg = 'viewdeleted';
 732                         }
 733                         return wfMsg( $msg,
 734                                 $this->makeKnownLink(
 735                                         $wgContLang->SpecialPage( 'Undelete/' . $wgTitle->getPrefixedDBkey() ),
 736                                         wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $n ) ) );
 737                 }
 738                 return '';
 739         }
 740
 741         function printableLink() {
 742                 global $wgOut, $wgFeedClasses, $wgRequest;
 743
 744                 $baseurl = $_SERVER['REQUEST_URI'];
 745                 if( strpos( '?', $baseurl ) == false ) {
 746                         $baseurl .= '?';
 747                 } else {
 748                         $baseurl .= '&';
 749                 }
 750                 $baseurl = htmlspecialchars( $baseurl );
 751                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
 752
 753                 $s = "<a href=\"$printurl\">" . wfMsg( 'printableversion' ) . '</a>';
 754                 if( $wgOut->isSyndicated() ) {
 755                         foreach( $wgFeedClasses as $format => $class ) {
 756                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
 757                                 $s .= " | <a href=\"$feedurl\">{$format}</a>";
 758                         }
 759                 }
 760                 return $s;
 761         }
 762
 763         function pageTitle() {
 764                 global $wgOut;
 765                 $s = '<h1 class="pagetitle">' . htmlspecialchars( $wgOut->getPageTitle() ) . '</h1>';
 766                 return $s;
 767         }
 768
 769         function pageSubtitle() {
 770                 global $wgOut;
 771
 772                 $sub = $wgOut->getSubtitle();
 773                 if ( '' == $sub ) {
 774                         global $wgExtraSubtitle;
 775                         $sub = wfMsg( 'tagline' ) . $wgExtraSubtitle;
 776                 }
 777                 $subpages = $this->subPageSubtitle();
 778                 $sub .= !empty($subpages)?"</p><p class='subpages'>$subpages":'';
 779                 $s = "<p class='subtitle'>{$sub}</p>\n";
 780                 return $s;
 781         }
 782
 783         function subPageSubtitle() {
 784                 global $wgOut,$wgTitle,$wgNamespacesWithSubpages;
 785                 $subpages = '';
 786                 if($wgOut->isArticle() && !empty($wgNamespacesWithSubpages[$wgTitle->getNamespace()])) {
 787                         $ptext=$wgTitle->getPrefixedText();
 788                         if(preg_match('/\//',$ptext)) {
 789                                 $links = explode('/',$ptext);
 790                                 $c = 0;
 791                                 $growinglink = '';
 792                                 foreach($links as $link) {
 793                                         $c++;
 794                                         if ($c<count($links)) {
 795                                                 $growinglink .= $link;
 796                                                 $getlink = $this->makeLink( $growinglink, htmlspecialchars( $link ) );
 797                                                 if(preg_match('/class="new"/i',$getlink)) { break; } # this is a hack, but it saves time
 798                                                 if ($c>1) {
 799                                                         $subpages .= ' | ';
 800                                                 } else  {
 801                                                         $subpages .= '&lt; ';
 802                                                 }
 803                                                 $subpages .= $getlink;
 804                                                 $growinglink .= '/';
 805                                         }
 806                                 }
 807                         }
 808                 }
 809                 return $subpages;
 810         }
 811
 812         function nameAndLogin() {
 813                 global $wgUser, $wgTitle, $wgLang, $wgContLang, $wgShowIPinHeader;
 814
 815                 $li = $wgContLang->specialPage( 'Userlogin' );
 816                 $lo = $wgContLang->specialPage( 'Userlogout' );
 817
 818                 $s = '';
 819                 if ( $wgUser->isAnon() ) {
 820                         if( $wgShowIPinHeader && isset( $_COOKIE[ini_get('session.name')] ) ) {
 821                                 $n = wfGetIP();
 822
 823                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 824                                   $wgLang->getNsText( NS_TALK ) );
 825
 826                                 $s .= $n . ' ('.$tl.')';
 827                         } else {
 828                                 $s .= wfMsg('notloggedin');
 829                         }
 830
 831                         $rt = $wgTitle->getPrefixedURL();
 832                         if ( 0 == strcasecmp( urlencode( $lo ), $rt ) ) {
 833                                 $q = '';
 834                         } else { $q = "returnto={$rt}"; }
 835
 836                         $s .= "\n<br />" . $this->makeKnownLinkObj(
 837                                 Title::makeTitle( NS_SPECIAL, 'Userlogin' ),
 838                                 wfMsg( 'login' ), $q );
 839                 } else {
 840                         $n = $wgUser->getName();
 841                         $rt = $wgTitle->getPrefixedURL();
 842                         $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 843                           $wgLang->getNsText( NS_TALK ) );
 844
 845                         $tl = " ({$tl})";
 846
 847                         $s .= $this->makeKnownLinkObj( $wgUser->getUserPage(),
 848                           $n ) . "{$tl}<br />" .
 849                           $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Userlogout' ), wfMsg( 'logout' ),
 850                           "returnto={$rt}" ) . ' | ' .
 851                           $this->specialLink( 'preferences' );
 852                 }
 853                 $s .= ' | ' . $this->makeKnownLink( wfMsgForContent( 'helppage' ),
 854                   wfMsg( 'help' ) );
 855
 856                 return $s;
 857         }
 858
 859         function getSearchLink() {
 860                 $searchPage =& Title::makeTitle( NS_SPECIAL, 'Search' );
 861                 return $searchPage->getLocalURL();
 862         }
 863
 864         function escapeSearchLink() {
 865                 return htmlspecialchars( $this->getSearchLink() );
 866         }
 867
 868         function searchForm() {
 869                 global $wgRequest;
 870                 $search = $wgRequest->getText( 'search' );
 871
 872                 $s = '<form name="search" class="inline" method="post" action="'
 873                   . $this->escapeSearchLink() . "\">\n"
 874                   . '<input type="text" name="search" size="19" value="'
 875                   . htmlspecialchars(substr($search,0,256)) . "\" />\n"
 876                   . '<input type="submit" name="go" value="' . wfMsg ('searcharticle') . '" />&nbsp;'
 877                   . '<input type="submit" name="fulltext" value="' . wfMsg ('searchbutton') . "\" />\n</form>";
 878
 879                 return $s;
 880         }
 881
 882         function topLinks() {
 883                 global $wgOut;
 884                 $sep = " |\n";
 885
 886                 $s = $this->mainPageLink() . $sep
 887                   . $this->specialLink( 'recentchanges' );
 888
 889                 if ( $wgOut->isArticleRelated() ) {
 890                         $s .=  $sep . $this->editThisPage()
 891                           . $sep . $this->historyLink();
 892                 }
 893                 # Many people don't like this dropdown box
 894                 #$s .= $sep . $this->specialPagesList();
 895
 896                 /* show links to different language variants */
 897                 global $wgDisableLangConversion, $wgContLang, $wgTitle;
 898                 $variants = $wgContLang->getVariants();
 899                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
 900                         foreach( $variants as $code ) {
 901                                 $varname = $wgContLang->getVariantname( $code );
 902                                 if( $varname == 'disable' )
 903                                         continue;
 904                                 $s .= ' | <a href="' . $wgTitle->getLocalUrl( 'variant=' . $code ) . '">' . $varname . '</a>';
 905                         }
 906                 }
 907
 908                 return $s;
 909         }
 910
 911         function bottomLinks() {
 912                 global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
 913                 $sep = " |\n";
 914
 915                 $s = '';
 916                 if ( $wgOut->isArticleRelated() ) {
 917                         $s .= '<strong>' . $this->editThisPage() . '</strong>';
 918                         if ( $wgUser->isLoggedIn() ) {
 919                                 $s .= $sep . $this->watchThisPage();
 920                         }
 921                         $s .= $sep . $this->talkLink()
 922                           . $sep . $this->historyLink()
 923                           . $sep . $this->whatLinksHere()
 924                           . $sep . $this->watchPageLinksLink();
 925
 926                         if ($wgUseTrackbacks)
 927                                 $s .= $sep . $this->trackbackLink();
 928
 929                         if ( $wgTitle->getNamespace() == NS_USER
 930                             || $wgTitle->getNamespace() == NS_USER_TALK )
 931
 932                         {
 933                                 $id=User::idFromName($wgTitle->getText());
 934                                 $ip=User::isIP($wgTitle->getText());
 935
 936                                 if($id || $ip) { # both anons and non-anons have contri list
 937                                         $s .= $sep . $this->userContribsLink();
 938                                 }
 939                                 if( $this->showEmailUser( $id ) ) {
 940                                         $s .= $sep . $this->emailUserLink();
 941                                 }
 942                         }
 943                         if ( $wgTitle->getArticleId() ) {
 944                                 $s .= "\n<br />";
 945                                 if($wgUser->isAllowed('delete')) { $s .= $this->deleteThisPage(); }
 946                                 if($wgUser->isAllowed('protect')) { $s .= $sep . $this->protectThisPage(); }
 947                                 if($wgUser->isAllowed('move')) { $s .= $sep . $this->moveThisPage(); }
 948                         }
 949                         $s .= "<br />\n" . $this->otherLanguages();
 950                 }
 951                 return $s;
 952         }
 953
 954         function pageStats() {
 955                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
 956                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgTitle, $wgPageShowWatchingUsers;
 957
 958                 extract( $wgRequest->getValues( 'oldid', 'diff' ) );
 959                 if ( ! $wgOut->isArticle() ) { return ''; }
 960                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
 961                 if ( 0 == $wgArticle->getID() ) { return ''; }
 962
 963                 $s = '';
 964                 if ( !$wgDisableCounters ) {
 965                         $count = $wgLang->formatNum( $wgArticle->getCount() );
 966                         if ( $count ) {
 967                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
 968                         }
 969                 }
 970
 971                 if (isset($wgMaxCredits) && $wgMaxCredits != 0) {
 972                     require_once('Credits.php');
 973                     $s .= ' ' . getCredits($wgArticle, $wgMaxCredits, $wgShowCreditsIfMax);
 974                 } else {
 975                     $s .= $this->lastModified();
 976                 }
 977
 978                 if ($wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 979                         $dbr =& wfGetDB( DB_SLAVE );
 980                         extract( $dbr->tableNames( 'watchlist' ) );
 981                         $sql = "SELECT COUNT(*) AS n FROM $watchlist
 982                                 WHERE wl_title='" . $dbr->strencode($wgTitle->getDBKey()) .
 983                                 "' AND  wl_namespace=" . $wgTitle->getNamespace() ;
 984                         $res = $dbr->query( $sql, 'Skin::pageStats');
 985                         $x = $dbr->fetchObject( $res );
 986                         $s .= ' ' . wfMsg('number_of_watching_users_pageview', $x->n );
 987                 }
 988
 989                 return $s . ' ' .  $this->getCopyright();
 990         }
 991
 992         function getCopyright( $type = 'detect' ) {
 993                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
 994
 995                 if ( $type == 'detect' ) {
 996                         $oldid = $wgRequest->getVal( 'oldid' );
 997                         $diff = $wgRequest->getVal( 'diff' );
 998
 999                         if ( !is_null( $oldid ) && is_null( $diff ) && wfMsgForContent( 'history_copyright' ) !== '-' ) {
1000                                 $type = 'history';
1001                         } else {
1002                                 $type = 'normal';
1003                         }
1004                 }
1005
1006                 if ( $type == 'history' ) {
1007                         $msg = 'history_copyright';
1008                 } else {
1009                         $msg = 'copyright';
1010                 }
1011
1012                 $out = '';
1013                 if( $wgRightsPage ) {
1014                         $link = $this->makeKnownLink( $wgRightsPage, $wgRightsText );
1015                 } elseif( $wgRightsUrl ) {
1016                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
1017                 } else {
1018                         # Give up now
1019                         return $out;
1020                 }
1021                 $out .= wfMsgForContent( $msg, $link );
1022                 return $out;
1023         }
1024
1025         function getCopyrightIcon() {
1026                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
1027                 $out = '';
1028                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
1029                         $out = $wgCopyrightIcon;
1030                 } else if ( $wgRightsIcon ) {
1031                         $icon = htmlspecialchars( $wgRightsIcon );
1032                         if ( $wgRightsUrl ) {
1033                                 $url = htmlspecialchars( $wgRightsUrl );
1034                                 $out .= '<a href="'.$url.'">';
1035                         }
1036                         $text = htmlspecialchars( $wgRightsText );
1037                         $out .= "<img src=\"$icon\" alt='$text' />";
1038                         if ( $wgRightsUrl ) {
1039                                 $out .= '</a>';
1040                         }
1041                 }
1042                 return $out;
1043         }
1044
1045         function getPoweredBy() {
1046                 global $wgStylePath;
1047                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
1048                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="MediaWiki" /></a>';
1049                 return $img;
1050         }
1051
1052         function lastModified() {
1053                 global $wgLang, $wgArticle, $wgLoadBalancer;
1054
1055                 $timestamp = $wgArticle->getTimestamp();
1056                 if ( $timestamp ) {
1057                         $d = $wgLang->date( $timestamp, true );
1058                         $t = $wgLang->time( $timestamp, true );
1059                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
1060                 } else {
1061                         $s = '';
1062                 }
1063                 if ( $wgLoadBalancer->getLaggedSlaveMode() ) {
1064                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
1065                 }
1066                 return $s;
1067         }
1068
1069         function logoText( $align = '' ) {
1070                 if ( '' != $align ) { $a = " align='{$align}'"; }
1071                 else { $a = ''; }
1072
1073                 $mp = wfMsg( 'mainpage' );
1074                 $titleObj = Title::newFromText( $mp );
1075                 if ( is_object( $titleObj ) ) {
1076                         $url = $titleObj->escapeLocalURL();
1077                 } else {
1078                         $url = '';
1079                 }
1080
1081                 $logourl = $this->getLogo();
1082                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1083                 return $s;
1084         }
1085
1086         /**
1087          * show a drop-down box of special pages
1088          */
1089         function specialPagesList() {
1090                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript;
1091                 $a = array();
1092                 $pages = array_merge( SpecialPage::getRegularPages(), SpecialPage::getRestrictedPages() );
1093                 foreach ( $pages as $name => $page ) {
1094                         $pages[$name] = $page->getDescription();
1095                 }
1096
1097                 $go = wfMsg( 'go' );
1098                 $sp = wfMsg( 'specialpages' );
1099                 $spp = $wgContLang->specialPage( 'Specialpages' );
1100
1101                 $s = '<form id="specialpages" method="get" class="inline" ' .
1102                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1103                 $s .= "<select name=\"wpDropdown\">\n";
1104                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1105
1106
1107                 foreach ( $pages as $name => $desc ) {
1108                         $p = $wgContLang->specialPage( $name );
1109                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1110                 }
1111                 $s .= "</select>\n";
1112                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1113                 $s .= "</form>\n";
1114                 return $s;
1115         }
1116
1117         function mainPageLink() {
1118                 $mp = wfMsgForContent( 'mainpage' );
1119                 $mptxt = wfMsg( 'mainpage');
1120                 $s = $this->makeKnownLink( $mp, $mptxt );
1121                 return $s;
1122         }
1123
1124         function copyrightLink() {
1125                 $s = $this->makeKnownLink( wfMsgForContent( 'copyrightpage' ),
1126                   wfMsg( 'copyrightpagename' ) );
1127                 return $s;
1128         }
1129
1130         function privacyLink() {
1131                 $privacy = wfMsg( 'privacy' );
1132                 if ($privacy == '-') {
1133                         return '';
1134                 } else {
1135                         return $this->makeKnownLink( wfMsgForContent( 'privacypage' ), $privacy);
1136                 }
1137         }
1138
1139         function aboutLink() {
1140                 $s = $this->makeKnownLink( wfMsgForContent( 'aboutpage' ),
1141                   wfMsg( 'aboutsite' ) );
1142                 return $s;
1143         }
1144
1145         function disclaimerLink() {
1146                 $disclaimers = wfMsg( 'disclaimers' );
1147                 if ($disclaimers == '-') {
1148                         return '';
1149                 } else {
1150                         return $this->makeKnownLink( wfMsgForContent( 'disclaimerpage' ),
1151                                                      $disclaimers );
1152                 }
1153         }
1154
1155         function editThisPage() {
1156                 global $wgOut, $wgTitle;
1157
1158                 if ( ! $wgOut->isArticleRelated() ) {
1159                         $s = wfMsg( 'protectedpage' );
1160                 } else {
1161                         if ( $wgTitle->userCanEdit() ) {
1162                                 $t = wfMsg( 'editthispage' );
1163                         } else {
1164                                 $t = wfMsg( 'viewsource' );
1165                         }
1166
1167                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $this->editUrlOptions() );
1168                 }
1169                 return $s;
1170         }
1171
1172         /**
1173          * Return URL options for the 'edit page' link.
1174          * This may include an 'oldid' specifier, if the current page view is such.
1175          *
1176          * @return string
1177          * @private
1178          */
1179         function editUrlOptions() {
1180                 global $wgArticle;
1181
1182                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1183                         return "action=edit&oldid=" . intval( $this->mRevisionId );
1184                 } else {
1185                         return "action=edit";
1186                 }
1187         }
1188
1189         function deleteThisPage() {
1190                 global $wgUser, $wgTitle, $wgRequest;
1191
1192                 $diff = $wgRequest->getVal( 'diff' );
1193                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('delete') ) {
1194                         $t = wfMsg( 'deletethispage' );
1195
1196                         $s = $this->makeKnownLinkObj( $wgTitle, $t, 'action=delete' );
1197                 } else {
1198                         $s = '';
1199                 }
1200                 return $s;
1201         }
1202
1203         function protectThisPage() {
1204                 global $wgUser, $wgTitle, $wgRequest;
1205
1206                 $diff = $wgRequest->getVal( 'diff' );
1207                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1208                         if ( $wgTitle->isProtected() ) {
1209                                 $t = wfMsg( 'unprotectthispage' );
1210                                 $q = 'action=unprotect';
1211                         } else {
1212                                 $t = wfMsg( 'protectthispage' );
1213                                 $q = 'action=protect';
1214                         }
1215                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1216                 } else {
1217                         $s = '';
1218                 }
1219                 return $s;
1220         }
1221
1222         function watchThisPage() {
1223                 global $wgOut, $wgTitle;
1224
1225                 if ( $wgOut->isArticleRelated() ) {
1226                         if ( $wgTitle->userIsWatching() ) {
1227                                 $t = wfMsg( 'unwatchthispage' );
1228                                 $q = 'action=unwatch';
1229                         } else {
1230                                 $t = wfMsg( 'watchthispage' );
1231                                 $q = 'action=watch';
1232                         }
1233                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1234                 } else {
1235                         $s = wfMsg( 'notanarticle' );
1236                 }
1237                 return $s;
1238         }
1239
1240         function moveThisPage() {
1241                 global $wgTitle;
1242
1243                 if ( $wgTitle->userCanMove() ) {
1244                         return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Movepage' ),
1245                           wfMsg( 'movethispage' ), 'target=' . $wgTitle->getPrefixedURL() );
1246                 } else {
1247                         // no message if page is protected - would be redundant
1248                         return '';
1249                 }
1250         }
1251
1252         function historyLink() {
1253                 global $wgTitle;
1254
1255                 return $this->makeKnownLinkObj( $wgTitle,
1256                   wfMsg( 'history' ), 'action=history' );
1257         }
1258
1259         function whatLinksHere() {
1260                 global $wgTitle;
1261
1262                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Whatlinkshere' ),
1263                   wfMsg( 'whatlinkshere' ), 'target=' . $wgTitle->getPrefixedURL() );
1264         }
1265
1266         function userContribsLink() {
1267                 global $wgTitle;
1268
1269                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Contributions' ),
1270                   wfMsg( 'contributions' ), 'target=' . $wgTitle->getPartialURL() );
1271         }
1272
1273         function showEmailUser( $id ) {
1274                 global $wgEnableEmail, $wgEnableUserEmail, $wgUser;
1275                 return $wgEnableEmail &&
1276                        $wgEnableUserEmail &&
1277                        $wgUser->isLoggedIn() && # show only to signed in users
1278                        0 != $id; # we can only email to non-anons ..
1279 #                      '' != $id->getEmail() && # who must have an email address stored ..
1280 #                      0 != $id->getEmailauthenticationtimestamp() && # .. which is authenticated
1281 #                      1 != $wgUser->getOption('disablemail'); # and not disabled
1282         }
1283
1284         function emailUserLink() {
1285                 global $wgTitle;
1286
1287                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Emailuser' ),
1288                   wfMsg( 'emailuser' ), 'target=' . $wgTitle->getPartialURL() );
1289         }
1290
1291         function watchPageLinksLink() {
1292                 global $wgOut, $wgTitle;
1293
1294                 if ( ! $wgOut->isArticleRelated() ) {
1295                         return '(' . wfMsg( 'notanarticle' ) . ')';
1296                 } else {
1297                         return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL,
1298                           'Recentchangeslinked' ), wfMsg( 'recentchangeslinked' ),
1299                           'target=' . $wgTitle->getPrefixedURL() );
1300                 }
1301         }
1302
1303         function trackbackLink() {
1304                 global $wgTitle;
1305
1306                 return "<a href=\"" . $wgTitle->trackbackURL() . "\">"
1307                         . wfMsg('trackbacklink') . "</a>";
1308         }
1309
1310         function otherLanguages() {
1311                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1312
1313                 if ( $wgHideInterlanguageLinks ) {
1314                         return '';
1315                 }
1316
1317                 $a = $wgOut->getLanguageLinks();
1318                 if ( 0 == count( $a ) ) {
1319                         return '';
1320                 }
1321
1322                 $s = wfMsg( 'otherlanguages' ) . ': ';
1323                 $first = true;
1324                 if($wgContLang->isRTL()) $s .= '<span dir="LTR">';
1325                 foreach( $a as $l ) {
1326                         if ( ! $first ) { $s .= ' | '; }
1327                         $first = false;
1328
1329                         $nt = Title::newFromText( $l );
1330                         $url = $nt->escapeFullURL();
1331                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1332
1333                         if ( '' == $text ) { $text = $l; }
1334                         $style = $this->getExternalLinkAttributes( $l, $text );
1335                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1336                 }
1337                 if($wgContLang->isRTL()) $s .= '</span>';
1338                 return $s;
1339         }
1340
1341         function bugReportsLink() {
1342                 $s = $this->makeKnownLink( wfMsgForContent( 'bugreportspage' ),
1343                   wfMsg( 'bugreports' ) );
1344                 return $s;
1345         }
1346
1347         function dateLink() {
1348                 $t1 = Title::newFromText( gmdate( 'F j' ) );
1349                 $t2 = Title::newFromText( gmdate( 'Y' ) );
1350
1351                 $id = $t1->getArticleID();
1352
1353                 if ( 0 == $id ) {
1354                         $s = $this->makeBrokenLink( $t1->getText() );
1355                 } else {
1356                         $s = $this->makeKnownLink( $t1->getText() );
1357                 }
1358                 $s .= ', ';
1359
1360                 $id = $t2->getArticleID();
1361
1362                 if ( 0 == $id ) {
1363                         $s .= $this->makeBrokenLink( $t2->getText() );
1364                 } else {
1365                         $s .= $this->makeKnownLink( $t2->getText() );
1366                 }
1367                 return $s;
1368         }
1369
1370         function talkLink() {
1371                 global $wgTitle;
1372
1373                 if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
1374                         # No discussion links for special pages
1375                         return '';
1376                 }
1377
1378                 if( $wgTitle->isTalkPage() ) {
1379                         $link = $wgTitle->getSubjectPage();
1380                         switch( $link->getNamespace() ) {
1381                                 case NS_MAIN:
1382                                         $text = wfMsg( 'articlepage' );
1383                                         break;
1384                                 case NS_USER:
1385                                         $text = wfMsg( 'userpage' );
1386                                         break;
1387                                 case NS_PROJECT:
1388                                         $text = wfMsg( 'projectpage' );
1389                                         break;
1390                                 case NS_IMAGE:
1391                                         $text = wfMsg( 'imagepage' );
1392                                         break;
1393                                 case NS_MEDIAWIKI:
1394                                         $text = wfMsg( 'mediawikipage' );
1395                                         break;
1396                                 case NS_TEMPLATE:
1397                                         $text = wfMsg( 'templatepage' );
1398                                         break;
1399                                 case NS_HELP:
1400                                         $text = wfMsg( 'viewhelppage' );
1401                                         break;
1402                                 case NS_CATEGORY:
1403                                         $text = wfMsg( 'categorypage' );
1404                                         break;
1405                                 default:
1406                                         $text = wfMsg( 'articlepage' );
1407                         }
1408                 } else {
1409                         $link = $wgTitle->getTalkPage();
1410                         $text = wfMsg( 'talkpage' );
1411                 }
1412
1413                 $s = $this->makeLinkObj( $link, $text );
1414
1415                 return $s;
1416         }
1417
1418         function commentLink() {
1419                 global $wgTitle, $wgOut;
1420
1421                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
1422                         return '';
1423                 }
1424
1425                 # __NEWSECTIONLINK___ changes behaviour here
1426                 # If it's present, the link points to this page, otherwise
1427                 # it points to the talk page
1428                 if( $wgTitle->isTalkPage() ) {
1429                         $title =& $wgTitle;
1430                 } elseif( $wgOut->showNewSectionLink() ) {
1431                         $title =& $wgTitle;
1432                 } else {
1433                         $title =& $wgTitle->getTalkPage();
1434                 }
1435
1436                 return $this->makeKnownLinkObj( $title, wfMsg( 'postcomment' ), 'action=edit&section=new' );
1437         }
1438
1439         /* these are used extensively in SkinTemplate, but also some other places */
1440         static function makeSpecialUrl( $name, $urlaction = '' ) {
1441                 $title = Title::makeTitle( NS_SPECIAL, $name );
1442                 return $title->getLocalURL( $urlaction );
1443         }
1444
1445         static function makeI18nUrl( $name, $urlaction = '' ) {
1446                 $title = Title::newFromText( wfMsgForContent( $name ) );
1447                 self::checkTitle( $title, $name );
1448                 return $title->getLocalURL( $urlaction );
1449         }
1450
1451         static function makeUrl( $name, $urlaction = '' ) {
1452                 $title = Title::newFromText( $name );
1453                 self::checkTitle( $title, $name );
1454                 return $title->getLocalURL( $urlaction );
1455         }
1456
1457         # If url string starts with http, consider as external URL, else
1458         # internal
1459         static function makeInternalOrExternalUrl( $name ) {
1460                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1461                         return $name;
1462                 } else {
1463                         return self::makeUrl( $name );
1464                 }
1465         }
1466
1467         # this can be passed the NS number as defined in Language.php
1468         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1469                 $title = Title::makeTitleSafe( $namespace, $name );
1470                 self::checkTitle( $title, $name );
1471                 return $title->getLocalURL( $urlaction );
1472         }
1473
1474         /* these return an array with the 'href' and boolean 'exists' */
1475         static function makeUrlDetails( $name, $urlaction = '' ) {
1476                 $title = Title::newFromText( $name );
1477                 self::checkTitle( $title, $name );
1478                 return array(
1479                         'href' => $title->getLocalURL( $urlaction ),
1480                         'exists' => $title->getArticleID() != 0 ? true : false
1481                 );
1482         }
1483
1484         /**
1485          * Make URL details where the article exists (or at least it's convenient to think so)
1486          */
1487         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1488                 $title = Title::newFromText( $name );
1489                 self::checkTitle( $title, $name );
1490                 return array(
1491                         'href' => $title->getLocalURL( $urlaction ),
1492                         'exists' => true
1493                 );
1494         }
1495
1496         # make sure we have some title to operate on
1497         static function checkTitle( &$title, &$name ) {
1498                 if( !is_object( $title ) ) {
1499                         $title = Title::newFromText( $name );
1500                         if( !is_object( $title ) ) {
1501                                 $title = Title::newFromText( '--error: link target missing--' );
1502                         }
1503                 }
1504         }
1505
1506         /**
1507          * Build an array that represents the sidebar(s), the navigation bar among them
1508          *
1509          * @return array
1510          * @private
1511          */
1512         function buildSidebar() {
1513                 global $parserMemc, $wgEnableSidebarCache;
1514                 global $wgLang, $wgContLang;
1515
1516                 $fname = 'SkinTemplate::buildSidebar';
1517
1518                 wfProfileIn( $fname );
1519
1520                 $key = wfMemcKey( 'sidebar' );
1521                 $cacheSidebar = $wgEnableSidebarCache &&
1522                         ($wgLang->getCode() == $wgContLang->getCode());
1523
1524                 if ($cacheSidebar) {
1525                         $cachedsidebar = $parserMemc->get( $key );
1526                         if ($cachedsidebar!="") {
1527                                 wfProfileOut($fname);
1528                                 return $cachedsidebar;
1529                         }
1530                 }
1531
1532                 $bar = array();
1533                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
1534                 foreach ($lines as $line) {
1535                         if (strpos($line, '*') !== 0)
1536                                 continue;
1537                         if (strpos($line, '**') !== 0) {
1538                                 $line = trim($line, '* ');
1539                                 $heading = $line;
1540                         } else {
1541                                 if (strpos($line, '|') !== false) { // sanity check
1542                                         $line = explode( '|' , trim($line, '* '), 2 );
1543                                         $link = wfMsgForContent( $line[0] );
1544                                         if ($link == '-')
1545                                                 continue;
1546                                         if (wfEmptyMsg($line[1], $text = wfMsg($line[1])))
1547                                                 $text = $line[1];
1548                                         if (wfEmptyMsg($line[0], $link))
1549                                                 $link = $line[0];
1550                                         $href = self::makeInternalOrExternalUrl( $link );
1551                                         $bar[$heading][] = array(
1552                                                 'text' => $text,
1553                                                 'href' => $href,
1554                                                 'id' => 'n-' . strtr($line[1], ' ', '-'),
1555                                                 'active' => false
1556                                         );
1557                                 } else { continue; }
1558                         }
1559                 }
1560                 if ($cacheSidebar)
1561                         $cachednotice = $parserMemc->set( $key, $bar, 86400 );
1562                 wfProfileOut( $fname );
1563                 return $bar;
1564         }
1565 }
1566 ?>