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 require_once( 'Linker.php' );
  13 require_once( 'Image.php' );
  14
  15 # Get a list of all skins available in /skins/
  16 # Build using the regular expression '^(.*).php$'
  17 # Array keys are all lower case, array value keep the case used by filename
  18 #
  19
  20 $skinDir = dir($IP.'/skins');
  21
  22 # while code from www.php.net
  23 while (false !== ($file = $skinDir->read())) {
  24         // Skip non-PHP files, hidden files, and '.dep' includes
  25         if(preg_match('/^([^.]*)\.php$/',$file, $matches)) {
  26                 $aSkin = $matches[1];
  27                 $wgValidSkinNames[strtolower($aSkin)] = $aSkin;
  28         }
  29 }
  30 $skinDir->close();
  31 unset($matches);
  32
  33 /**
  34  * The main skin class that provide methods and properties for all other skins.
  35  * This base class is also the "Standard" skin.
  36  * @package MediaWiki
  37  */
  38 class Skin extends Linker {
  39         /**#@+
  40          * @private
  41          */
  42         var $lastdate, $lastline;
  43         var $rc_cache ; # Cache for Enhanced Recent Changes
  44         var $rcCacheIndex ; # Recent Changes Cache Counter for visibility toggle
  45         var $rcMoveIndex;
  46         /**#@-*/
  47
  48         /** Constructor, call parent constructor */
  49         function Skin() { parent::Linker(); }
  50
  51         /**
  52          * Fetch the set of available skins.
  53          * @return array of strings
  54          * @static
  55          */
  56         function getSkinNames() {
  57                 global $wgValidSkinNames;
  58                 return $wgValidSkinNames;
  59         }
  60
  61         /**
  62          * Normalize a skin preference value to a form that can be loaded.
  63          * If a skin can't be found, it will fall back to the configured
  64          * default (or the old 'Classic' skin if that's broken).
  65          * @param string $key
  66          * @return string
  67          * @static
  68          */
  69         function normalizeKey( $key ) {
  70                 global $wgDefaultSkin;
  71                 $skinNames = Skin::getSkinNames();
  72
  73                 if( $key == '' ) {
  74                         // Don't return the default immediately;
  75                         // in a misconfiguration we need to fall back.
  76                         $key = $wgDefaultSkin;
  77                 }
  78
  79                 if( isset( $skinNames[$key] ) ) {
  80                         return $key;
  81                 }
  82
  83                 // Older versions of the software used a numeric setting
  84                 // in the user preferences.
  85                 $fallback = array(
  86                         0 => $wgDefaultSkin,
  87                         1 => 'nostalgia',
  88                         2 => 'cologneblue' );
  89
  90                 if( isset( $fallback[$key] ) ){
  91                         $key = $fallback[$key];
  92                 }
  93
  94                 if( isset( $skinNames[$key] ) ) {
  95                         return $key;
  96                 } else {
  97                         // The old built-in skin
  98                         return 'standard';
  99                 }
 100         }
 101
 102         /**
 103          * Factory method for loading a skin of a given type
 104          * @param string $key 'monobook', 'standard', etc
 105          * @return Skin
 106          * @static
 107          */
 108         function &newFromKey( $key ) {
 109                 $key = Skin::normalizeKey( $key );
 110
 111                 $skinNames = Skin::getSkinNames();
 112                 $skinName = $skinNames[$key];
 113
 114                 global $IP;
 115
 116                 # Grab the skin class and initialise it.
 117                 wfSuppressWarnings();
 118                 // Preload base classes to work around APC/PHP5 bug
 119                 include_once( $IP.'/skins/'.$skinName.'.deps.php' );
 120                 wfRestoreWarnings();
 121                 require_once( $IP.'/skins/'.$skinName.'.php' );
 122
 123                 # Check if we got if not failback to default skin
 124                 $className = 'Skin'.$skinName;
 125                 if( !class_exists( $className ) ) {
 126                         # DO NOT die if the class isn't found. This breaks maintenance
 127                         # scripts and can cause a user account to be unrecoverable
 128                         # except by SQL manipulation if a previously valid skin name
 129                         # is no longer valid.
 130                         wfDebug( "Skin class does not exist: $className\n" );
 131                         $className = 'SkinStandard';
 132                         require_once( $IP.'/skins/Standard.php' );
 133                 }
 134                 $skin =& new $className;
 135                 return $skin;
 136         }
 137
 138         /** @return string path to the skin stylesheet */
 139         function getStylesheet() {
 140                 return 'common/wikistandard.css?1';
 141         }
 142
 143         /** @return string skin name */
 144         function getSkinName() {
 145                 return 'standard';
 146         }
 147
 148         function qbSetting() {
 149                 global $wgOut, $wgUser;
 150
 151                 if ( $wgOut->isQuickbarSuppressed() ) { return 0; }
 152                 $q = $wgUser->getOption( 'quickbar' );
 153                 if ( '' == $q ) { $q = 0; }
 154                 return $q;
 155         }
 156
 157         function initPage( &$out ) {
 158                 global $wgFavicon;
 159
 160                 $fname = 'Skin::initPage';
 161                 wfProfileIn( $fname );
 162
 163                 if( false !== $wgFavicon ) {
 164                         $out->addLink( array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
 165                 }
 166
 167                 $this->addMetadataLinks($out);
 168
 169                 $this->mRevisionId = $out->mRevisionId;
 170
 171                 $this->preloadExistence();
 172
 173                 wfProfileOut( $fname );
 174         }
 175
 176         /**
 177          * Preload the existence of three commonly-requested pages in a single query
 178          */
 179         function preloadExistence() {
 180                 global $wgUser, $wgTitle;
 181
 182                 if ( $wgTitle->isTalkPage() ) {
 183                         $otherTab = $wgTitle->getSubjectPage();
 184                 } else {
 185                         $otherTab = $wgTitle->getTalkPage();
 186                 }
 187                 $lb = new LinkBatch( array(
 188                         $wgUser->getUserPage(),
 189                         $wgUser->getTalkPage(),
 190                         $otherTab
 191                 ));
 192                 $lb->execute();
 193         }
 194
 195         function addMetadataLinks( &$out ) {
 196                 global $wgTitle, $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf;
 197                 global $wgRightsPage, $wgRightsUrl;
 198
 199                 if( $out->isArticleRelated() ) {
 200                         # note: buggy CC software only reads first "meta" link
 201                         if( $wgEnableCreativeCommonsRdf ) {
 202                                 $out->addMetadataLink( array(
 203                                         'title' => 'Creative Commons',
 204                                         'type' => 'application/rdf+xml',
 205                                         'href' => $wgTitle->getLocalURL( 'action=creativecommons') ) );
 206                         }
 207                         if( $wgEnableDublinCoreRdf ) {
 208                                 $out->addMetadataLink( array(
 209                                         'title' => 'Dublin Core',
 210                                         'type' => 'application/rdf+xml',
 211                                         'href' => $wgTitle->getLocalURL( 'action=dublincore' ) ) );
 212                         }
 213                 }
 214                 $copyright = '';
 215                 if( $wgRightsPage ) {
 216                         $copy = Title::newFromText( $wgRightsPage );
 217                         if( $copy ) {
 218                                 $copyright = $copy->getLocalURL();
 219                         }
 220                 }
 221                 if( !$copyright && $wgRightsUrl ) {
 222                         $copyright = $wgRightsUrl;
 223                 }
 224                 if( $copyright ) {
 225                         $out->addLink( array(
 226                                 'rel' => 'copyright',
 227                                 'href' => $copyright ) );
 228                 }
 229         }
 230
 231         function outputPage( &$out ) {
 232                 global $wgDebugComments;
 233
 234                 wfProfileIn( 'Skin::outputPage' );
 235                 $this->initPage( $out );
 236
 237                 $out->out( $out->headElement() );
 238
 239                 $out->out( "\n<body" );
 240                 $ops = $this->getBodyOptions();
 241                 foreach ( $ops as $name => $val ) {
 242                         $out->out( " $name='$val'" );
 243                 }
 244                 $out->out( ">\n" );
 245                 if ( $wgDebugComments ) {
 246                         $out->out( "<!-- Wiki debugging output:\n" .
 247                           $out->mDebugtext . "-->\n" );
 248                 }
 249
 250                 $out->out( $this->beforeContent() );
 251
 252                 $out->out( $out->mBodytext . "\n" );
 253
 254                 $out->out( $this->afterContent() );
 255
 256                 $out->out( $out->reportTime() );
 257
 258                 $out->out( "\n</body></html>" );
 259         }
 260
 261         function getHeadScripts() {
 262                 global $wgStylePath, $wgUser, $wgAllowUserJs, $wgJsMimeType;
 263                 $r = "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/wikibits.js\"></script>\n";
 264                 if( $wgAllowUserJs && $wgUser->isLoggedIn() ) {
 265                         $userpage = $wgUser->getUserPage();
 266                         $userjs = htmlspecialchars( $this->makeUrl(
 267                                 $userpage->getPrefixedText().'/'.$this->getSkinName().'.js',
 268                                 'action=raw&ctype='.$wgJsMimeType));
 269                         $r .= '<script type="'.$wgJsMimeType.'" src="'.$userjs."\"></script>\n";
 270                 }
 271                 return $r;
 272         }
 273
 274         /**
 275          * To make it harder for someone to slip a user a fake
 276          * user-JavaScript or user-CSS preview, a random token
 277          * is associated with the login session. If it's not
 278          * passed back with the preview request, we won't render
 279          * the code.
 280          *
 281          * @param string $action
 282          * @return bool
 283          * @private
 284          */
 285         function userCanPreview( $action ) {
 286                 global $wgTitle, $wgRequest, $wgUser;
 287
 288                 if( $action != 'submit' )
 289                         return false;
 290                 if( !$wgRequest->wasPosted() )
 291                         return false;
 292                 if( !$wgTitle->userCanEditCssJsSubpage() )
 293                         return false;
 294                 return $wgUser->matchEditToken(
 295                         $wgRequest->getVal( 'wpEditToken' ) );
 296         }
 297
 298         # get the user/site-specific stylesheet, SkinTemplate loads via RawPage.php (settings are cached that way)
 299         function getUserStylesheet() {
 300                 global $wgStylePath, $wgRequest, $wgContLang, $wgSquidMaxage;
 301                 $sheet = $this->getStylesheet();
 302                 $action = $wgRequest->getText('action');
 303                 $s = "@import \"$wgStylePath/$sheet\";\n";
 304                 if($wgContLang->isRTL()) $s .= "@import \"$wgStylePath/common/common_rtl.css\";\n";
 305
 306                 $query = "action=raw&ctype=text/css&smaxage=$wgSquidMaxage";
 307                 $s .= '@import "' . $this->makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) . "\";\n" .
 308                         '@import "'.$this->makeNSUrl( ucfirst( $this->getSkinName() . '.css' ), $query, NS_MEDIAWIKI ) . "\";\n";
 309
 310                 $s .= $this->doGetUserStyles();
 311                 return $s."\n";
 312         }
 313
 314         /**
 315          * placeholder, returns generated js in monobook
 316          */
 317         function getUserJs() { return; }
 318
 319         /**
 320          * Return html code that include User stylesheets
 321          */
 322         function getUserStyles() {
 323                 $s = "<style type='text/css'>\n";
 324                 $s .= "/*/*/ /*<![CDATA[*/\n"; # <-- Hide the styles from Netscape 4 without hiding them from IE/Mac
 325                 $s .= $this->getUserStylesheet();
 326                 $s .= "/*]]>*/ /* */\n";
 327                 $s .= "</style>\n";
 328                 return $s;
 329         }
 330
 331         /**
 332          * Some styles that are set by user through the user settings interface.
 333          * @todo undefined variables (bug #4940)
 334          */
 335         function doGetUserStyles() {
 336                 global $wgUser, $wgUser, $wgRequest, $wgTitle, $wgAllowUserCss;
 337
 338                 $s = '';
 339
 340                 if( $wgAllowUserCss && $wgUser->isLoggedIn() ) { # logged in
 341                         # FIXME: $action undefined, bug #4940
 342                         if($wgTitle->isCssSubpage() && $this->userCanPreview( $action ) ) {
 343                                 $s .= $wgRequest->getText('wpTextbox1');
 344                         } else {
 345                                 $userpage = $wgUser->getUserPage();
 346                                 $s.= '@import "'.$this->makeUrl(
 347                                         $userpage->getPrefixedText().'/'.$this->getSkinName().'.css',
 348                                         'action=raw&ctype=text/css').'";'."\n";
 349                         }
 350                 }
 351
 352                 return $s . $this->reallyDoGetUserStyles();
 353         }
 354
 355         function reallyDoGetUserStyles() {
 356                 global $wgUser;
 357                 $s = '';
 358                 if (($undopt = $wgUser->getOption("underline")) != 2) {
 359                         $underline = $undopt ? 'underline' : 'none';
 360                         $s .= "a { text-decoration: $underline; }\n";
 361                 }
 362                 if( $wgUser->getOption( 'highlightbroken' ) ) {
 363                         $s .= "a.new, #quickbar a.new { color: #CC2200; }\n";
 364                 } else {
 365                         $s .= <<<END
 366 a.new, #quickbar a.new,
 367 a.stub, #quickbar a.stub {
 368         color: inherit;
 369         text-decoration: inherit;
 370 }
 371 a.new:after, #quickbar a.new:after {
 372         content: "?";
 373         color: #CC2200;
 374         text-decoration: $underline;
 375 }
 376 a.stub:after, #quickbar a.stub:after {
 377         content: "!";
 378         color: #772233;
 379         text-decoration: $underline;
 380 }
 381 END;
 382                 }
 383                 if( $wgUser->getOption( 'justify' ) ) {
 384                         $s .= "#article, #bodyContent { text-align: justify; }\n";
 385                 }
 386                 if( !$wgUser->getOption( 'showtoc' ) ) {
 387                         $s .= "#toc { display: none; }\n";
 388                 }
 389                 if( !$wgUser->getOption( 'editsection' ) ) {
 390                         $s .= ".editsection { display: none; }\n";
 391                 }
 392                 return $s;
 393         }
 394
 395         function getBodyOptions() {
 396                 global $wgUser, $wgTitle, $wgOut, $wgRequest;
 397
 398                 extract( $wgRequest->getValues( 'oldid', 'redirect', 'diff' ) );
 399
 400                 if ( 0 != $wgTitle->getNamespace() ) {
 401                         $a = array( 'bgcolor' => '#ffffec' );
 402                 }
 403                 else $a = array( 'bgcolor' => '#FFFFFF' );
 404                 if($wgOut->isArticle() && $wgUser->getOption('editondblclick') &&
 405                   $wgTitle->userCanEdit() ) {
 406                         $t = wfMsg( 'editthispage' );
 407                         $s = $wgTitle->getFullURL( $this->editUrlOptions() );
 408                         $s = 'document.location = "' .wfEscapeJSString( $s ) .'";';
 409                         $a += array ('ondblclick' => $s);
 410
 411                 }
 412                 $a['onload'] = $wgOut->getOnloadHandler();
 413                 if( $wgUser->getOption( 'editsectiononrightclick' ) ) {
 414                         if( $a['onload'] != '' ) {
 415                                 $a['onload'] .= ';';
 416                         }
 417                         $a['onload'] .= 'setupRightClickEdit()';
 418                 }
 419                 return $a;
 420         }
 421
 422         /**
 423          * URL to the logo
 424          */
 425         function getLogo() {
 426                 global $wgLogo;
 427                 return $wgLogo;
 428         }
 429
 430         /**
 431          * This will be called immediately after the <body> tag.  Split into
 432          * two functions to make it easier to subclass.
 433          */
 434         function beforeContent() {
 435                 return $this->doBeforeContent();
 436         }
 437
 438         function doBeforeContent() {
 439                 global $wgContLang;
 440                 $fname = 'Skin::doBeforeContent';
 441                 wfProfileIn( $fname );
 442
 443                 $s = '';
 444                 $qb = $this->qbSetting();
 445
 446                 if( $langlinks = $this->otherLanguages() ) {
 447                         $rows = 2;
 448                         $borderhack = '';
 449                 } else {
 450                         $rows = 1;
 451                         $langlinks = false;
 452                         $borderhack = 'class="top"';
 453                 }
 454
 455                 $s .= "\n<div id='content'>\n<div id='topbar'>\n" .
 456                   "<table border='0' cellspacing='0' width='98%'>\n<tr>\n";
 457
 458                 $shove = ($qb != 0);
 459                 $left = ($qb == 1 || $qb == 3);
 460                 if($wgContLang->isRTL()) $left = !$left;
 461
 462                 if ( !$shove ) {
 463                         $s .= "<td class='top' align='left' valign='top' rowspan='{$rows}'>\n" .
 464                           $this->logoText() . '</td>';
 465                 } elseif( $left ) {
 466                         $s .= $this->getQuickbarCompensator( $rows );
 467                 }
 468                 $l = $wgContLang->isRTL() ? 'right' : 'left';
 469                 $s .= "<td {$borderhack} align='$l' valign='top'>\n";
 470
 471                 $s .= $this->topLinks() ;
 472                 $s .= "<p class='subtitle'>" . $this->pageTitleLinks() . "</p>\n";
 473
 474                 $r = $wgContLang->isRTL() ? "left" : "right";
 475                 $s .= "</td>\n<td {$borderhack} valign='top' align='$r' nowrap='nowrap'>";
 476                 $s .= $this->nameAndLogin();
 477                 $s .= "\n<br />" . $this->searchForm() . "</td>";
 478
 479                 if ( $langlinks ) {
 480                         $s .= "</tr>\n<tr>\n<td class='top' colspan=\"2\">$langlinks</td>\n";
 481                 }
 482
 483                 if ( $shove && !$left ) { # Right
 484                         $s .= $this->getQuickbarCompensator( $rows );
 485                 }
 486                 $s .= "</tr>\n</table>\n</div>\n";
 487                 $s .= "\n<div id='article'>\n";
 488
 489                 $notice = wfGetSiteNotice();
 490                 if( $notice ) {
 491                         $s .= "\n<div id='siteNotice'>$notice</div>\n";
 492                 }
 493                 $s .= $this->pageTitle();
 494                 $s .= $this->pageSubtitle() ;
 495                 $s .= $this->getCategories();
 496                 wfProfileOut( $fname );
 497                 return $s;
 498         }
 499
 500
 501         function getCategoryLinks () {
 502                 global $wgOut, $wgTitle, $wgUseCategoryBrowser;
 503                 global $wgContLang;
 504
 505                 if( count( $wgOut->mCategoryLinks ) == 0 ) return '';
 506
 507                 # Separator
 508                 $sep = wfMsgHtml( 'catseparator' );
 509
 510                 // Use Unicode bidi embedding override characters,
 511                 // to make sure links don't smash each other up in ugly ways.
 512                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
 513                 $embed = "<span dir='$dir'>";
 514                 $pop = '</span>';
 515                 $t = $embed . implode ( "{$pop} {$sep} {$embed}" , $wgOut->mCategoryLinks ) . $pop;
 516
 517                 $msg = wfMsgExt('categories', array('parsemag', 'escape'), count( $wgOut->mCategoryLinks ));
 518                 $s = $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Categories' ),
 519                         $msg, 'article=' . urlencode( $wgTitle->getPrefixedDBkey() ) )
 520                         . ': ' . $t;
 521
 522                 # optional 'dmoz-like' category browser. Will be shown under the list
 523                 # of categories an article belong to
 524                 if($wgUseCategoryBrowser) {
 525                         $s .= '<br /><hr />';
 526
 527                         # get a big array of the parents tree
 528                         $parenttree = $wgTitle->getParentCategoryTree();
 529                         # Skin object passed by reference cause it can not be
 530                         # accessed under the method subfunction drawCategoryBrowser
 531                         $tempout = explode("\n", Skin::drawCategoryBrowser($parenttree, $this) );
 532                         # Clean out bogus first entry and sort them
 533                         unset($tempout[0]);
 534                         asort($tempout);
 535                         # Output one per line
 536                         $s .= implode("<br />\n", $tempout);
 537                 }
 538
 539                 return $s;
 540         }
 541
 542         /** Render the array as a serie of links.
 543          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 544          * @param &skin Object: skin passed by reference
 545          * @return String separated by &gt;, terminate with "\n"
 546          */
 547         function drawCategoryBrowser($tree, &$skin) {
 548                 $return = '';
 549                 foreach ($tree as $element => $parent) {
 550                         if (empty($parent)) {
 551                                 # element start a new list
 552                                 $return .= "\n";
 553                         } else {
 554                                 # grab the others elements
 555                                 $return .= Skin::drawCategoryBrowser($parent, $skin) . ' &gt; ';
 556                         }
 557                         # add our current element to the list
 558                         $eltitle = Title::NewFromText($element);
 559                         $return .=  $skin->makeLinkObj( $eltitle, $eltitle->getText() ) ;
 560                 }
 561                 return $return;
 562         }
 563
 564         function getCategories() {
 565                 $catlinks=$this->getCategoryLinks();
 566                 if(!empty($catlinks)) {
 567                         return "<p class='catlinks'>{$catlinks}</p>";
 568                 }
 569         }
 570
 571         function getQuickbarCompensator( $rows = 1 ) {
 572                 return "<td width='152' rowspan='{$rows}'>&nbsp;</td>";
 573         }
 574
 575         /**
 576          * This gets called immediately before the \</body\> tag.
 577          * @return String HTML to be put after \</body\> ???
 578          */
 579         function afterContent() {
 580                 $printfooter = "<div class=\"printfooter\">\n" . $this->printFooter() . "</div>\n";
 581                 return $printfooter . $this->doAfterContent();
 582         }
 583
 584         /** @return string Retrievied from HTML text */
 585         function printSource() {
 586                 global $wgTitle;
 587                 $url = htmlspecialchars( $wgTitle->getFullURL() );
 588                 return wfMsg( 'retrievedfrom', '<a href="'.$url.'">'.$url.'</a>' );
 589         }
 590
 591         function printFooter() {
 592                 return "<p>" .  $this->printSource() .
 593                         "</p>\n\n<p>" . $this->pageStats() . "</p>\n";
 594         }
 595
 596         /** overloaded by derived classes */
 597         function doAfterContent() { }
 598
 599         function pageTitleLinks() {
 600                 global $wgOut, $wgTitle, $wgUser, $wgRequest;
 601
 602                 extract( $wgRequest->getValues( 'oldid', 'diff' ) );
 603                 $action = $wgRequest->getText( 'action' );
 604
 605                 $s = $this->printableLink();
 606                 $disclaimer = $this->disclaimerLink(); # may be empty
 607                 if( $disclaimer ) {
 608                         $s .= ' | ' . $disclaimer;
 609                 }
 610                 $privacy = $this->privacyLink(); # may be empty too
 611                 if( $privacy ) {
 612                         $s .= ' | ' . $privacy;
 613                 }
 614
 615                 if ( $wgOut->isArticleRelated() ) {
 616                         if ( $wgTitle->getNamespace() == NS_IMAGE ) {
 617                                 $name = $wgTitle->getDBkey();
 618                                 $image = new Image( $wgTitle );
 619                                 if( $image->exists() ) {
 620                                         $link = htmlspecialchars( $image->getURL() );
 621                                         $style = $this->getInternalLinkAttributes( $link, $name );
 622                                         $s .= " | <a href=\"{$link}\"{$style}>{$name}</a>";
 623                                 }
 624                         }
 625                 }
 626                 if ( 'history' == $action || isset( $diff ) || isset( $oldid ) ) {
 627                         $s .= ' | ' . $this->makeKnownLinkObj( $wgTitle,
 628                                         wfMsg( 'currentrev' ) );
 629                 }
 630
 631                 if ( $wgUser->getNewtalk() ) {
 632                         # do not show "You have new messages" text when we are viewing our
 633                         # own talk page
 634                         if( !$wgTitle->equals( $wgUser->getTalkPage() ) ) {
 635                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessageslink' ), 'redirect=no' );
 636                                 $dl = $this->makeKnownLinkObj( $wgUser->getTalkPage(), wfMsgHtml( 'newmessagesdifflink' ), 'diff=cur' );
 637                                 $s.= ' | <strong>'. wfMsg( 'youhavenewmessages', $tl, $dl ) . '</strong>';
 638                                 # disable caching
 639                                 $wgOut->setSquidMaxage(0);
 640                                 $wgOut->enableClientCache(false);
 641                         }
 642                 }
 643
 644                 $undelete = $this->getUndeleteLink();
 645                 if( !empty( $undelete ) ) {
 646                         $s .= ' | '.$undelete;
 647                 }
 648                 return $s;
 649         }
 650
 651         function getUndeleteLink() {
 652                 global $wgUser, $wgTitle, $wgContLang, $action;
 653                 if(     $wgUser->isAllowed( 'deletedhistory' ) &&
 654                         (($wgTitle->getArticleId() == 0) || ($action == "history")) &&
 655                         ($n = $wgTitle->isDeleted() ) )
 656                 {
 657                         if ( $wgUser->isAllowed( 'delete' ) ) {
 658                                 $msg = 'thisisdeleted';
 659                         } else {
 660                                 $msg = 'viewdeleted';
 661                         }
 662                         return wfMsg( $msg,
 663                                 $this->makeKnownLink(
 664                                         $wgContLang->SpecialPage( 'Undelete/' . $wgTitle->getPrefixedDBkey() ),
 665                                         wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $n ) ) );
 666                 }
 667                 return '';
 668         }
 669
 670         function printableLink() {
 671                 global $wgOut, $wgFeedClasses, $wgRequest;
 672
 673                 $baseurl = $_SERVER['REQUEST_URI'];
 674                 if( strpos( '?', $baseurl ) == false ) {
 675                         $baseurl .= '?';
 676                 } else {
 677                         $baseurl .= '&';
 678                 }
 679                 $baseurl = htmlspecialchars( $baseurl );
 680                 $printurl = $wgRequest->escapeAppendQuery( 'printable=yes' );
 681
 682                 $s = "<a href=\"$printurl\">" . wfMsg( 'printableversion' ) . '</a>';
 683                 if( $wgOut->isSyndicated() ) {
 684                         foreach( $wgFeedClasses as $format => $class ) {
 685                                 $feedurl = $wgRequest->escapeAppendQuery( "feed=$format" );
 686                                 $s .= " | <a href=\"$feedurl\">{$format}</a>";
 687                         }
 688                 }
 689                 return $s;
 690         }
 691
 692         function pageTitle() {
 693                 global $wgOut;
 694                 $s = '<h1 class="pagetitle">' . htmlspecialchars( $wgOut->getPageTitle() ) . '</h1>';
 695                 return $s;
 696         }
 697
 698         function pageSubtitle() {
 699                 global $wgOut;
 700
 701                 $sub = $wgOut->getSubtitle();
 702                 if ( '' == $sub ) {
 703                         global $wgExtraSubtitle;
 704                         $sub = wfMsg( 'tagline' ) . $wgExtraSubtitle;
 705                 }
 706                 $subpages = $this->subPageSubtitle();
 707                 $sub .= !empty($subpages)?"</p><p class='subpages'>$subpages":'';
 708                 $s = "<p class='subtitle'>{$sub}</p>\n";
 709                 return $s;
 710         }
 711
 712         function subPageSubtitle() {
 713                 global $wgOut,$wgTitle,$wgNamespacesWithSubpages;
 714                 $subpages = '';
 715                 if($wgOut->isArticle() && !empty($wgNamespacesWithSubpages[$wgTitle->getNamespace()])) {
 716                         $ptext=$wgTitle->getPrefixedText();
 717                         if(preg_match('/\//',$ptext)) {
 718                                 $links = explode('/',$ptext);
 719                                 $c = 0;
 720                                 $growinglink = '';
 721                                 foreach($links as $link) {
 722                                         $c++;
 723                                         if ($c<count($links)) {
 724                                                 $growinglink .= $link;
 725                                                 $getlink = $this->makeLink( $growinglink, htmlspecialchars( $link ) );
 726                                                 if(preg_match('/class="new"/i',$getlink)) { break; } # this is a hack, but it saves time
 727                                                 if ($c>1) {
 728                                                         $subpages .= ' | ';
 729                                                 } else  {
 730                                                         $subpages .= '&lt; ';
 731                                                 }
 732                                                 $subpages .= $getlink;
 733                                                 $growinglink .= '/';
 734                                         }
 735                                 }
 736                         }
 737                 }
 738                 return $subpages;
 739         }
 740
 741         function nameAndLogin() {
 742                 global $wgUser, $wgTitle, $wgLang, $wgContLang, $wgShowIPinHeader;
 743
 744                 $li = $wgContLang->specialPage( 'Userlogin' );
 745                 $lo = $wgContLang->specialPage( 'Userlogout' );
 746
 747                 $s = '';
 748                 if ( $wgUser->isAnon() ) {
 749                         if( $wgShowIPinHeader && isset( $_COOKIE[ini_get('session.name')] ) ) {
 750                                 $n = wfGetIP();
 751
 752                                 $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 753                                   $wgLang->getNsText( NS_TALK ) );
 754
 755                                 $s .= $n . ' ('.$tl.')';
 756                         } else {
 757                                 $s .= wfMsg('notloggedin');
 758                         }
 759
 760                         $rt = $wgTitle->getPrefixedURL();
 761                         if ( 0 == strcasecmp( urlencode( $lo ), $rt ) ) {
 762                                 $q = '';
 763                         } else { $q = "returnto={$rt}"; }
 764
 765                         $s .= "\n<br />" . $this->makeKnownLinkObj(
 766                                 Title::makeTitle( NS_SPECIAL, 'Userlogin' ),
 767                                 wfMsg( 'login' ), $q );
 768                 } else {
 769                         $n = $wgUser->getName();
 770                         $rt = $wgTitle->getPrefixedURL();
 771                         $tl = $this->makeKnownLinkObj( $wgUser->getTalkPage(),
 772                           $wgLang->getNsText( NS_TALK ) );
 773
 774                         $tl = " ({$tl})";
 775
 776                         $s .= $this->makeKnownLinkObj( $wgUser->getUserPage(),
 777                           $n ) . "{$tl}<br />" .
 778                           $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Userlogout' ), wfMsg( 'logout' ),
 779                           "returnto={$rt}" ) . ' | ' .
 780                           $this->specialLink( 'preferences' );
 781                 }
 782                 $s .= ' | ' . $this->makeKnownLink( wfMsgForContent( 'helppage' ),
 783                   wfMsg( 'help' ) );
 784
 785                 return $s;
 786         }
 787
 788         function getSearchLink() {
 789                 $searchPage =& Title::makeTitle( NS_SPECIAL, 'Search' );
 790                 return $searchPage->getLocalURL();
 791         }
 792
 793         function escapeSearchLink() {
 794                 return htmlspecialchars( $this->getSearchLink() );
 795         }
 796
 797         function searchForm() {
 798                 global $wgRequest;
 799                 $search = $wgRequest->getText( 'search' );
 800
 801                 $s = '<form name="search" class="inline" method="post" action="'
 802                   . $this->escapeSearchLink() . "\">\n"
 803                   . '<input type="text" name="search" size="19" value="'
 804                   . htmlspecialchars(substr($search,0,256)) . "\" />\n"
 805                   . '<input type="submit" name="go" value="' . wfMsg ('go') . '" />&nbsp;'
 806                   . '<input type="submit" name="fulltext" value="' . wfMsg ('search') . "\" />\n</form>";
 807
 808                 return $s;
 809         }
 810
 811         function topLinks() {
 812                 global $wgOut;
 813                 $sep = " |\n";
 814
 815                 $s = $this->mainPageLink() . $sep
 816                   . $this->specialLink( 'recentchanges' );
 817
 818                 if ( $wgOut->isArticleRelated() ) {
 819                         $s .=  $sep . $this->editThisPage()
 820                           . $sep . $this->historyLink();
 821                 }
 822                 # Many people don't like this dropdown box
 823                 #$s .= $sep . $this->specialPagesList();
 824
 825                 /* show links to different language variants */
 826                 global $wgDisableLangConversion, $wgContLang, $wgTitle;
 827                 $variants = $wgContLang->getVariants();
 828                 if( !$wgDisableLangConversion && sizeof( $variants ) > 1 ) {
 829                         foreach( $variants as $code ) {
 830                                 $varname = $wgContLang->getVariantname( $code );
 831                                 if( $varname == 'disable' )
 832                                         continue;
 833                                 $s .= ' | <a href="' . $wgTitle->getLocalUrl( 'variant=' . $code ) . '">' . $varname . '</a>';
 834                         }
 835                 }
 836
 837                 return $s;
 838         }
 839
 840         function bottomLinks() {
 841                 global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
 842                 $sep = " |\n";
 843
 844                 $s = '';
 845                 if ( $wgOut->isArticleRelated() ) {
 846                         $s .= '<strong>' . $this->editThisPage() . '</strong>';
 847                         if ( $wgUser->isLoggedIn() ) {
 848                                 $s .= $sep . $this->watchThisPage();
 849                         }
 850                         $s .= $sep . $this->talkLink()
 851                           . $sep . $this->historyLink()
 852                           . $sep . $this->whatLinksHere()
 853                           . $sep . $this->watchPageLinksLink();
 854
 855                         if ($wgUseTrackbacks)
 856                                 $s .= $sep . $this->trackbackLink();
 857
 858                         if ( $wgTitle->getNamespace() == NS_USER
 859                             || $wgTitle->getNamespace() == NS_USER_TALK )
 860
 861                         {
 862                                 $id=User::idFromName($wgTitle->getText());
 863                                 $ip=User::isIP($wgTitle->getText());
 864
 865                                 if($id || $ip) { # both anons and non-anons have contri list
 866                                         $s .= $sep . $this->userContribsLink();
 867                                 }
 868                                 if( $this->showEmailUser( $id ) ) {
 869                                         $s .= $sep . $this->emailUserLink();
 870                                 }
 871                         }
 872                         if ( $wgTitle->getArticleId() ) {
 873                                 $s .= "\n<br />";
 874                                 if($wgUser->isAllowed('delete')) { $s .= $this->deleteThisPage(); }
 875                                 if($wgUser->isAllowed('protect')) { $s .= $sep . $this->protectThisPage(); }
 876                                 if($wgUser->isAllowed('move')) { $s .= $sep . $this->moveThisPage(); }
 877                         }
 878                         $s .= "<br />\n" . $this->otherLanguages();
 879                 }
 880                 return $s;
 881         }
 882
 883         function pageStats() {
 884                 global $wgOut, $wgLang, $wgArticle, $wgRequest, $wgUser;
 885                 global $wgDisableCounters, $wgMaxCredits, $wgShowCreditsIfMax, $wgTitle, $wgPageShowWatchingUsers;
 886
 887                 extract( $wgRequest->getValues( 'oldid', 'diff' ) );
 888                 if ( ! $wgOut->isArticle() ) { return ''; }
 889                 if ( isset( $oldid ) || isset( $diff ) ) { return ''; }
 890                 if ( 0 == $wgArticle->getID() ) { return ''; }
 891
 892                 $s = '';
 893                 if ( !$wgDisableCounters ) {
 894                         $count = $wgLang->formatNum( $wgArticle->getCount() );
 895                         if ( $count ) {
 896                                 $s = wfMsgExt( 'viewcount', array( 'parseinline' ), $count );
 897                         }
 898                 }
 899
 900                 if (isset($wgMaxCredits) && $wgMaxCredits != 0) {
 901                     require_once('Credits.php');
 902                     $s .= ' ' . getCredits($wgArticle, $wgMaxCredits, $wgShowCreditsIfMax);
 903                 } else {
 904                     $s .= $this->lastModified();
 905                 }
 906
 907                 if ($wgPageShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 908                         $dbr =& wfGetDB( DB_SLAVE );
 909                         extract( $dbr->tableNames( 'watchlist' ) );
 910                         $sql = "SELECT COUNT(*) AS n FROM $watchlist
 911                                 WHERE wl_title='" . $dbr->strencode($wgTitle->getDBKey()) .
 912                                 "' AND  wl_namespace=" . $wgTitle->getNamespace() ;
 913                         $res = $dbr->query( $sql, 'Skin::pageStats');
 914                         $x = $dbr->fetchObject( $res );
 915                         $s .= ' ' . wfMsg('number_of_watching_users_pageview', $x->n );
 916                 }
 917
 918                 return $s . ' ' .  $this->getCopyright();
 919         }
 920
 921         function getCopyright( $type = 'detect' ) {
 922                 global $wgRightsPage, $wgRightsUrl, $wgRightsText, $wgRequest;
 923
 924                 if ( $type == 'detect' ) {
 925                         $oldid = $wgRequest->getVal( 'oldid' );
 926                         $diff = $wgRequest->getVal( 'diff' );
 927
 928                         if ( !is_null( $oldid ) && is_null( $diff ) && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 929                                 $type = 'history';
 930                         } else {
 931                                 $type = 'normal';
 932                         }
 933                 }
 934
 935                 if ( $type == 'history' ) {
 936                         $msg = 'history_copyright';
 937                 } else {
 938                         $msg = 'copyright';
 939                 }
 940
 941                 $out = '';
 942                 if( $wgRightsPage ) {
 943                         $link = $this->makeKnownLink( $wgRightsPage, $wgRightsText );
 944                 } elseif( $wgRightsUrl ) {
 945                         $link = $this->makeExternalLink( $wgRightsUrl, $wgRightsText );
 946                 } else {
 947                         # Give up now
 948                         return $out;
 949                 }
 950                 $out .= wfMsgForContent( $msg, $link );
 951                 return $out;
 952         }
 953
 954         function getCopyrightIcon() {
 955                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 956                 $out = '';
 957                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 958                         $out = $wgCopyrightIcon;
 959                 } else if ( $wgRightsIcon ) {
 960                         $icon = htmlspecialchars( $wgRightsIcon );
 961                         if ( $wgRightsUrl ) {
 962                                 $url = htmlspecialchars( $wgRightsUrl );
 963                                 $out .= '<a href="'.$url.'">';
 964                         }
 965                         $text = htmlspecialchars( $wgRightsText );
 966                         $out .= "<img src=\"$icon\" alt='$text' />";
 967                         if ( $wgRightsUrl ) {
 968                                 $out .= '</a>';
 969                         }
 970                 }
 971                 return $out;
 972         }
 973
 974         function getPoweredBy() {
 975                 global $wgStylePath;
 976                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 977                 $img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="MediaWiki" /></a>';
 978                 return $img;
 979         }
 980
 981         function lastModified() {
 982                 global $wgLang, $wgArticle, $wgLoadBalancer;
 983
 984                 $timestamp = $wgArticle->getTimestamp();
 985                 if ( $timestamp ) {
 986                         $d = $wgLang->timeanddate( $timestamp, true );
 987                         $s = ' ' . wfMsg( 'lastmodified', $d );
 988                 } else {
 989                         $s = '';
 990                 }
 991                 if ( $wgLoadBalancer->getLaggedSlaveMode() ) {
 992                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
 993                 }
 994                 return $s;
 995         }
 996
 997         function logoText( $align = '' ) {
 998                 if ( '' != $align ) { $a = " align='{$align}'"; }
 999                 else { $a = ''; }
1000
1001                 $mp = wfMsg( 'mainpage' );
1002                 $titleObj = Title::newFromText( $mp );
1003                 if ( is_object( $titleObj ) ) {
1004                         $url = $titleObj->escapeLocalURL();
1005                 } else {
1006                         $url = '';
1007                 }
1008
1009                 $logourl = $this->getLogo();
1010                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
1011                 return $s;
1012         }
1013
1014         /**
1015          * show a drop-down box of special pages
1016          * @TODO crash bug913. Need to be rewrote completly.
1017          */
1018         function specialPagesList() {
1019                 global $wgUser, $wgContLang, $wgServer, $wgRedirectScript, $wgAvailableRights;
1020                 require_once('SpecialPage.php');
1021                 $a = array();
1022                 $pages = SpecialPage::getPages();
1023
1024                 // special pages without access restriction
1025                 foreach ( $pages[''] as $name => $page ) {
1026                         $a[$name] = $page->getDescription();
1027                 }
1028
1029                 // Other special pages that are restricted.
1030                 // Copied from SpecialSpecialpages.php
1031                 foreach($wgAvailableRights as $right) {
1032                         if( $wgUser->isAllowed($right) ) {
1033                                 /** Add all pages for this right */
1034                                 if(isset($pages[$right])) {
1035                                         foreach($pages[$right] as $name => $page) {
1036                                         $a[$name] = $page->getDescription();
1037                                         }
1038                                 }
1039                         }
1040                 }
1041
1042                 $go = wfMsg( 'go' );
1043                 $sp = wfMsg( 'specialpages' );
1044                 $spp = $wgContLang->specialPage( 'Specialpages' );
1045
1046                 $s = '<form id="specialpages" method="get" class="inline" ' .
1047                   'action="' . htmlspecialchars( "{$wgServer}{$wgRedirectScript}" ) . "\">\n";
1048                 $s .= "<select name=\"wpDropdown\">\n";
1049                 $s .= "<option value=\"{$spp}\">{$sp}</option>\n";
1050
1051
1052                 foreach ( $a as $name => $desc ) {
1053                         $p = $wgContLang->specialPage( $name );
1054                         $s .= "<option value=\"{$p}\">{$desc}</option>\n";
1055                 }
1056                 $s .= "</select>\n";
1057                 $s .= "<input type='submit' value=\"{$go}\" name='redirect' />\n";
1058                 $s .= "</form>\n";
1059                 return $s;
1060         }
1061
1062         function mainPageLink() {
1063                 $mp = wfMsgForContent( 'mainpage' );
1064                 $mptxt = wfMsg( 'mainpage');
1065                 $s = $this->makeKnownLink( $mp, $mptxt );
1066                 return $s;
1067         }
1068
1069         function copyrightLink() {
1070                 $s = $this->makeKnownLink( wfMsgForContent( 'copyrightpage' ),
1071                   wfMsg( 'copyrightpagename' ) );
1072                 return $s;
1073         }
1074
1075         function privacyLink() {
1076                 $privacy = wfMsg( 'privacy' );
1077                 if ($privacy == '-') {
1078                         return '';
1079                 } else {
1080                         return $this->makeKnownLink( wfMsgForContent( 'privacypage' ), $privacy);
1081                 }
1082         }
1083
1084         function aboutLink() {
1085                 $s = $this->makeKnownLink( wfMsgForContent( 'aboutpage' ),
1086                   wfMsg( 'aboutsite' ) );
1087                 return $s;
1088         }
1089
1090         function disclaimerLink() {
1091                 $disclaimers = wfMsg( 'disclaimers' );
1092                 if ($disclaimers == '-') {
1093                         return '';
1094                 } else {
1095                         return $this->makeKnownLink( wfMsgForContent( 'disclaimerpage' ),
1096                                                      $disclaimers );
1097                 }
1098         }
1099
1100         function editThisPage() {
1101                 global $wgOut, $wgTitle;
1102
1103                 if ( ! $wgOut->isArticleRelated() ) {
1104                         $s = wfMsg( 'protectedpage' );
1105                 } else {
1106                         if ( $wgTitle->userCanEdit() ) {
1107                                 $t = wfMsg( 'editthispage' );
1108                         } else {
1109                                 $t = wfMsg( 'viewsource' );
1110                         }
1111
1112                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $this->editUrlOptions() );
1113                 }
1114                 return $s;
1115         }
1116
1117         /**
1118          * Return URL options for the 'edit page' link.
1119          * This may include an 'oldid' specifier, if the current page view is such.
1120          *
1121          * @return string
1122          * @private
1123          */
1124         function editUrlOptions() {
1125                 global $wgArticle;
1126
1127                 if( $this->mRevisionId && ! $wgArticle->isCurrent() ) {
1128                         return "action=edit&oldid=" . intval( $this->mRevisionId );
1129                 } else {
1130                         return "action=edit";
1131                 }
1132         }
1133
1134         function deleteThisPage() {
1135                 global $wgUser, $wgTitle, $wgRequest;
1136
1137                 $diff = $wgRequest->getVal( 'diff' );
1138                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('delete') ) {
1139                         $t = wfMsg( 'deletethispage' );
1140
1141                         $s = $this->makeKnownLinkObj( $wgTitle, $t, 'action=delete' );
1142                 } else {
1143                         $s = '';
1144                 }
1145                 return $s;
1146         }
1147
1148         function protectThisPage() {
1149                 global $wgUser, $wgTitle, $wgRequest;
1150
1151                 $diff = $wgRequest->getVal( 'diff' );
1152                 if ( $wgTitle->getArticleId() && ( ! $diff ) && $wgUser->isAllowed('protect') ) {
1153                         if ( $wgTitle->isProtected() ) {
1154                                 $t = wfMsg( 'unprotectthispage' );
1155                                 $q = 'action=unprotect';
1156                         } else {
1157                                 $t = wfMsg( 'protectthispage' );
1158                                 $q = 'action=protect';
1159                         }
1160                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1161                 } else {
1162                         $s = '';
1163                 }
1164                 return $s;
1165         }
1166
1167         function watchThisPage() {
1168                 global $wgOut, $wgTitle;
1169
1170                 if ( $wgOut->isArticleRelated() ) {
1171                         if ( $wgTitle->userIsWatching() ) {
1172                                 $t = wfMsg( 'unwatchthispage' );
1173                                 $q = 'action=unwatch';
1174                         } else {
1175                                 $t = wfMsg( 'watchthispage' );
1176                                 $q = 'action=watch';
1177                         }
1178                         $s = $this->makeKnownLinkObj( $wgTitle, $t, $q );
1179                 } else {
1180                         $s = wfMsg( 'notanarticle' );
1181                 }
1182                 return $s;
1183         }
1184
1185         function moveThisPage() {
1186                 global $wgTitle;
1187
1188                 if ( $wgTitle->userCanMove() ) {
1189                         return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Movepage' ),
1190                           wfMsg( 'movethispage' ), 'target=' . $wgTitle->getPrefixedURL() );
1191                 } else {
1192                         // no message if page is protected - would be redundant
1193                         return '';
1194                 }
1195         }
1196
1197         function historyLink() {
1198                 global $wgTitle;
1199
1200                 return $this->makeKnownLinkObj( $wgTitle,
1201                   wfMsg( 'history' ), 'action=history' );
1202         }
1203
1204         function whatLinksHere() {
1205                 global $wgTitle;
1206
1207                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Whatlinkshere' ),
1208                   wfMsg( 'whatlinkshere' ), 'target=' . $wgTitle->getPrefixedURL() );
1209         }
1210
1211         function userContribsLink() {
1212                 global $wgTitle;
1213
1214                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Contributions' ),
1215                   wfMsg( 'contributions' ), 'target=' . $wgTitle->getPartialURL() );
1216         }
1217
1218         function showEmailUser( $id ) {
1219                 global $wgEnableEmail, $wgEnableUserEmail, $wgUser;
1220                 return $wgEnableEmail &&
1221                        $wgEnableUserEmail &&
1222                        $wgUser->isLoggedIn() && # show only to signed in users
1223                        0 != $id; # we can only email to non-anons ..
1224 #                      '' != $id->getEmail() && # who must have an email address stored ..
1225 #                      0 != $id->getEmailauthenticationtimestamp() && # .. which is authenticated
1226 #                      1 != $wgUser->getOption('disablemail'); # and not disabled
1227         }
1228
1229         function emailUserLink() {
1230                 global $wgTitle;
1231
1232                 return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Emailuser' ),
1233                   wfMsg( 'emailuser' ), 'target=' . $wgTitle->getPartialURL() );
1234         }
1235
1236         function watchPageLinksLink() {
1237                 global $wgOut, $wgTitle;
1238
1239                 if ( ! $wgOut->isArticleRelated() ) {
1240                         return '(' . wfMsg( 'notanarticle' ) . ')';
1241                 } else {
1242                         return $this->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL,
1243                           'Recentchangeslinked' ), wfMsg( 'recentchangeslinked' ),
1244                           'target=' . $wgTitle->getPrefixedURL() );
1245                 }
1246         }
1247
1248         function trackbackLink() {
1249                 global $wgTitle;
1250
1251                 return "<a href=\"" . $wgTitle->trackbackURL() . "\">"
1252                         . wfMsg('trackbacklink') . "</a>";
1253         }
1254
1255         function otherLanguages() {
1256                 global $wgOut, $wgContLang, $wgHideInterlanguageLinks;
1257
1258                 if ( $wgHideInterlanguageLinks ) {
1259                         return '';
1260                 }
1261
1262                 $a = $wgOut->getLanguageLinks();
1263                 if ( 0 == count( $a ) ) {
1264                         return '';
1265                 }
1266
1267                 $s = wfMsg( 'otherlanguages' ) . ': ';
1268                 $first = true;
1269                 if($wgContLang->isRTL()) $s .= '<span dir="LTR">';
1270                 foreach( $a as $l ) {
1271                         if ( ! $first ) { $s .= ' | '; }
1272                         $first = false;
1273
1274                         $nt = Title::newFromText( $l );
1275                         $url = $nt->escapeFullURL();
1276                         $text = $wgContLang->getLanguageName( $nt->getInterwiki() );
1277
1278                         if ( '' == $text ) { $text = $l; }
1279                         $style = $this->getExternalLinkAttributes( $l, $text );
1280                         $s .= "<a href=\"{$url}\"{$style}>{$text}</a>";
1281                 }
1282                 if($wgContLang->isRTL()) $s .= '</span>';
1283                 return $s;
1284         }
1285
1286         function bugReportsLink() {
1287                 $s = $this->makeKnownLink( wfMsgForContent( 'bugreportspage' ),
1288                   wfMsg( 'bugreports' ) );
1289                 return $s;
1290         }
1291
1292         function dateLink() {
1293                 $t1 = Title::newFromText( gmdate( 'F j' ) );
1294                 $t2 = Title::newFromText( gmdate( 'Y' ) );
1295
1296                 $id = $t1->getArticleID();
1297
1298                 if ( 0 == $id ) {
1299                         $s = $this->makeBrokenLink( $t1->getText() );
1300                 } else {
1301                         $s = $this->makeKnownLink( $t1->getText() );
1302                 }
1303                 $s .= ', ';
1304
1305                 $id = $t2->getArticleID();
1306
1307                 if ( 0 == $id ) {
1308                         $s .= $this->makeBrokenLink( $t2->getText() );
1309                 } else {
1310                         $s .= $this->makeKnownLink( $t2->getText() );
1311                 }
1312                 return $s;
1313         }
1314
1315         function talkLink() {
1316                 global $wgTitle;
1317
1318                 if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
1319                         # No discussion links for special pages
1320                         return '';
1321                 }
1322
1323                 if( $wgTitle->isTalkPage() ) {
1324                         $link = $wgTitle->getSubjectPage();
1325                         switch( $link->getNamespace() ) {
1326                         case NS_MAIN:
1327                                 $text = wfMsg('articlepage');
1328                                 break;
1329                         case NS_USER:
1330                                 $text = wfMsg('userpage');
1331                                 break;
1332                         case NS_PROJECT:
1333                                 $text = wfMsg('projectpage');
1334                                 break;
1335                         case NS_IMAGE:
1336                                 $text = wfMsg('imagepage');
1337                                 break;
1338                         default:
1339                                 $text= wfMsg('articlepage');
1340                         }
1341                 } else {
1342                         $link = $wgTitle->getTalkPage();
1343                         $text = wfMsg( 'talkpage' );
1344                 }
1345
1346                 $s = $this->makeLinkObj( $link, $text );
1347
1348                 return $s;
1349         }
1350
1351         function commentLink() {
1352                 global $wgTitle, $wgOut;
1353
1354                 if ( $wgTitle->getNamespace() == NS_SPECIAL ) {
1355                         return '';
1356                 }
1357
1358                 # __NEWSECTIONLINK___ changes behaviour here
1359                 # If it's present, the link points to this page, otherwise
1360                 # it points to the talk page
1361                 if( $wgTitle->isTalkPage() ) {
1362                         $title =& $wgTitle;
1363                 } elseif( $wgOut->showNewSectionLink() ) {
1364                         $title =& $wgTitle;
1365                 } else {
1366                         $title =& $wgTitle->getTalkPage();
1367                 }
1368
1369                 return $this->makeKnownLinkObj( $title, wfMsg( 'postcomment' ), 'action=edit&section=new' );
1370         }
1371
1372         /* these are used extensively in SkinTemplate, but also some other places */
1373         /*static*/ function makeSpecialUrl( $name, $urlaction='' ) {
1374                 $title = Title::makeTitle( NS_SPECIAL, $name );
1375                 return $title->getLocalURL( $urlaction );
1376         }
1377
1378         /*static*/ function makeI18nUrl ( $name, $urlaction='' ) {
1379                 $title = Title::newFromText( wfMsgForContent($name) );
1380                 $this->checkTitle($title, $name);
1381                 return $title->getLocalURL( $urlaction );
1382         }
1383
1384         /*static*/ function makeUrl ( $name, $urlaction='' ) {
1385                 $title = Title::newFromText( $name );
1386                 $this->checkTitle($title, $name);
1387                 return $title->getLocalURL( $urlaction );
1388         }
1389
1390         # If url string starts with http, consider as external URL, else
1391         # internal
1392         /*static*/ function makeInternalOrExternalUrl( $name ) {
1393                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1394                         return $name;
1395                 } else {
1396                         return $this->makeUrl( $name );
1397                 }
1398         }
1399
1400         # this can be passed the NS number as defined in Language.php
1401         /*static*/ function makeNSUrl( $name, $urlaction='', $namespace=NS_MAIN ) {
1402                 $title = Title::makeTitleSafe( $namespace, $name );
1403                 $this->checkTitle($title, $name);
1404                 return $title->getLocalURL( $urlaction );
1405         }
1406
1407         /* these return an array with the 'href' and boolean 'exists' */
1408         /*static*/ function makeUrlDetails ( $name, $urlaction='' ) {
1409                 $title = Title::newFromText( $name );
1410                 $this->checkTitle($title, $name);
1411                 return array(
1412                         'href' => $title->getLocalURL( $urlaction ),
1413                         'exists' => $title->getArticleID() != 0?true:false
1414                 );
1415         }
1416
1417         /**
1418          * Make URL details where the article exists (or at least it's convenient to think so)
1419          */
1420         function makeKnownUrlDetails( $name, $urlaction='' ) {
1421                 $title = Title::newFromText( $name );
1422                 $this->checkTitle($title, $name);
1423                 return array(
1424                         'href' => $title->getLocalURL( $urlaction ),
1425                         'exists' => true
1426                 );
1427         }
1428
1429         # make sure we have some title to operate on
1430         /*static*/ function checkTitle ( &$title, &$name ) {
1431                 if(!is_object($title)) {
1432                         $title = Title::newFromText( $name );
1433                         if(!is_object($title)) {
1434                                 $title = Title::newFromText( '--error: link target missing--' );
1435                         }
1436                 }
1437         }
1438
1439         /**
1440          * Build an array that represents the sidebar(s), the navigation bar among them
1441          *
1442          * @return array
1443          * @private
1444          */
1445         function buildSidebar() {
1446                 global $wgDBname, $parserMemc, $wgEnableSidebarCache;
1447                 global $wgLanguageCode, $wgContLanguageCode;
1448
1449                 $fname = 'SkinTemplate::buildSidebar';
1450
1451                 wfProfileIn( $fname );
1452
1453                 $key = "{$wgDBname}:sidebar";
1454                 $cacheSidebar = $wgEnableSidebarCache &&
1455                         ($wgLanguageCode == $wgContLanguageCode);
1456
1457                 if ($cacheSidebar) {
1458                         $cachedsidebar = $parserMemc->get( $key );
1459                         if ($cachedsidebar!="") {
1460                                 wfProfileOut($fname);
1461                                 return $cachedsidebar;
1462                         }
1463                 }
1464
1465                 $bar = array();
1466                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
1467                 foreach ($lines as $line) {
1468                         if (strpos($line, '*') !== 0)
1469                                 continue;
1470                         if (strpos($line, '**') !== 0) {
1471                                 $line = trim($line, '* ');
1472                                 $heading = $line;
1473                         } else {
1474                                 if (strpos($line, '|') !== false) { // sanity check
1475                                         $line = explode( '|' , trim($line, '* '), 2 );
1476                                         $link = wfMsgForContent( $line[0] );
1477                                         if ($link == '-')
1478                                                 continue;
1479                                         if (wfEmptyMsg($line[1], $text = wfMsg($line[1])))
1480                                                 $text = $line[1];
1481                                         if (wfEmptyMsg($line[0], $link))
1482                                                 $link = $line[0];
1483                                         $href = $this->makeInternalOrExternalUrl( $link );
1484                                         $bar[$heading][] = array(
1485                                                 'text' => $text,
1486                                                 'href' => $href,
1487                                                 'id' => 'n-' . strtr($line[1], ' ', '-'),
1488                                                 'active' => false
1489                                         );
1490                                 } else { continue; }
1491                         }
1492                 }
1493                 if ($cacheSidebar)
1494                         $cachednotice = $parserMemc->set( $key, $bar, 86400 );
1495                 wfProfileOut( $fname );
1496                 return $bar;
1497         }
1498 }
1499 ?>