skins/disabled/MonoBookCBT.php

   1 <?php
   2
   3 if ( !defined( 'MEDIAWIKI' ) ) {
   4         die( "This file is part of MediaWiki, it is not a valid entry point\n" );
   5 }
   6
   7 require_once( 'includes/cbt/CBTProcessor.php' );
   8 require_once( 'includes/cbt/CBTCompiler.php' );
   9 require_once( 'includes/SkinTemplate.php' );
  10
  11 /**
  12  * MonoBook clone using the new dependency-tracking template processor.
  13  * EXPERIMENTAL - use only for testing and profiling at this stage.
  14  *
  15  * See includes/cbt/README for an explanation.
  16  *
  17  * The main thing that's missing is cache invalidation, on change of:
  18  *   * messages
  19  *   * user preferences
  20  *   * source template
  21  *   * source code and configuration files
  22  *
  23  * The other thing is that lots of dependencies that are declared in the callbacks
  24  * are not intelligently handled. There's some room for improvement there.
  25  *
  26  * The class is derived from SkinTemplate, but that's only temporary. Eventually
  27  * it'll be derived from Skin, and I've avoided using SkinTemplate functions as
  28  * much as possible. In fact, the only SkinTemplate dependencies I know of at the
  29  * moment are the functions to generate the gen=css and gen=js files.
  30  *
  31  */
  32 class SkinMonoBookCBT extends SkinTemplate {
  33         var $mOut, $mTitle;
  34         var $mStyleName = 'monobook';
  35         var $mCompiling = false;
  36         var $mFunctionCache = array();
  37
  38         /******************************************************
  39          * General functions                                  *
  40          ******************************************************/
  41
  42         /** Execute the template and write out the result */
  43         function outputPage( &$out ) {
  44                 echo $this->execute( $out );
  45         }
  46
  47         function execute( &$out ) {
  48                 global $wgTitle, $wgStyleDirectory, $wgParserCacheType;
  49                 $fname = 'SkinMonoBookCBT::execute';
  50                 wfProfileIn( $fname );
  51                 wfProfileIn( "$fname-setup" );
  52                 Skin::initPage( $out );
  53
  54                 $this->mOut =&  $out;
  55                 $this->mTitle =& $wgTitle;
  56
  57                 $sourceFile = "$wgStyleDirectory/MonoBook.tpl";
  58
  59                 wfProfileOut( "$fname-setup" );
  60
  61                 if ( $wgParserCacheType == CACHE_NONE ) {
  62                         $template = file_get_contents( $sourceFile );
  63                         $text = $this->executeTemplate( $template );
  64                 } else {
  65                         $compiled = $this->getCompiledTemplate( $sourceFile );
  66
  67                         wfProfileIn( "$fname-eval" );
  68                         $text = eval( $compiled );
  69                         wfProfileOut( "$fname-eval" );
  70                 }
  71                 wfProfileOut( $fname );
  72                 return $text;
  73         }
  74
  75         function getCompiledTemplate( $sourceFile ) {
  76                 global $wgDBname, $wgMemc, $wgRequest, $wgUser, $parserMemc;
  77                 $fname = 'SkinMonoBookCBT::getCompiledTemplate';
  78
  79                 $expiry = 3600;
  80
  81                 // Sandbox template execution
  82                 if ( $this->mCompiling ) {
  83                         return;
  84                 }
  85
  86                 wfProfileIn( $fname );
  87
  88                 // Is the request an ordinary page view?
  89                 if ( $wgRequest->wasPosted() ||
  90                                 count( array_diff( array_keys( $_GET ), array( 'title', 'useskin', 'recompile' ) ) ) != 0 )
  91                 {
  92                         $type = 'nonview';
  93                 } else {
  94                         $type = 'view';
  95                 }
  96
  97                 // Per-user compiled template
  98                 // Put all logged-out users on the same cache key
  99                 $cacheKey = "$wgDBname:monobookcbt:$type:" . $wgUser->getId();
 100
 101                 $recompile = $wgRequest->getVal( 'recompile' );
 102                 if ( $recompile == 'user' ) {
 103                         $recompileUser = true;
 104                         $recompileGeneric = false;
 105                 } elseif ( $recompile ) {
 106                         $recompileUser = true;
 107                         $recompileGeneric = true;
 108                 } else {
 109                         $recompileUser = false;
 110                         $recompileGeneric = false;
 111                 }
 112
 113                 if ( !$recompileUser ) {
 114                         $php = $parserMemc->get( $cacheKey );
 115                 }
 116                 if ( $recompileUser || !$php ) {
 117                         if ( $wgUser->isLoggedIn() ) {
 118                                 // Perform staged compilation
 119                                 // First compile a generic template for all logged-in users
 120                                 $genericKey = "$wgDBname:monobookcbt:$type:loggedin";
 121                                 if ( !$recompileGeneric ) {
 122                                         $template = $parserMemc->get( $genericKey );
 123                                 }
 124                                 if ( $recompileGeneric || !$template ) {
 125                                         $template = file_get_contents( $sourceFile );
 126                                         $ignore = array( 'loggedin', '!loggedin dynamic' );
 127                                         if ( $type == 'view' ) {
 128                                                 $ignore[] = 'nonview dynamic';
 129                                         }
 130                                         $template = $this->compileTemplate( $template, $ignore );
 131                                         $parserMemc->set( $genericKey, $template, $expiry );
 132                                 }
 133                         } else {
 134                                 $template = file_get_contents( $sourceFile );
 135                         }
 136
 137                         $ignore = array( 'lang', 'loggedin', 'user' );
 138                         if ( $wgUser->isLoggedIn() ) {
 139                                 $ignore[] = '!loggedin dynamic';
 140                         } else {
 141                                 $ignore[] = 'loggedin dynamic';
 142                         }
 143                         if ( $type == 'view' ) {
 144                                 $ignore[] = 'nonview dynamic';
 145                         }
 146                         $compiled = $this->compileTemplate( $template, $ignore );
 147
 148                         // Reduce whitespace
 149                         // This is done here instead of in CBTProcessor because we can be
 150                         // more sure it is safe here.
 151                         $compiled = preg_replace( '/^[ \t]+/m', '', $compiled );
 152                         $compiled = preg_replace( '/[\r\n]+/', "\n", $compiled );
 153
 154                         // Compile to PHP
 155                         $compiler = new CBTCompiler( $compiled );
 156                         $ret = $compiler->compile();
 157                         if ( $ret !== true ) {
 158                                 echo $ret;
 159                                 wfErrorExit();
 160                         }
 161                         $php = $compiler->generatePHP( '$this' );
 162
 163                         $parserMemc->set( $cacheKey, $php, $expiry );
 164                 }
 165                 wfProfileOut( $fname );
 166                 return $php;
 167         }
 168
 169         function compileTemplate( $template, $ignore ) {
 170                 $tp = new CBTProcessor( $template, $this, $ignore );
 171                 $tp->mFunctionCache = $this->mFunctionCache;
 172
 173                 $this->mCompiling = true;
 174                 $compiled = $tp->compile();
 175                 $this->mCompiling = false;
 176
 177                 if ( $tp->getLastError() ) {
 178                         // If there was a compile error, don't save the template
 179                         // Instead just print the error and exit
 180                         echo $compiled;
 181                         wfErrorExit();
 182                 }
 183                 $this->mFunctionCache = $tp->mFunctionCache;
 184                 return $compiled;
 185         }
 186
 187         function executeTemplate( $template ) {
 188                 $fname = 'SkinMonoBookCBT::executeTemplate';
 189                 wfProfileIn( $fname );
 190                 $tp = new CBTProcessor( $template, $this );
 191                 $tp->mFunctionCache = $this->mFunctionCache;
 192
 193                 $this->mCompiling = true;
 194                 $text = $tp->execute();
 195                 $this->mCompiling = false;
 196
 197                 $this->mFunctionCache = $tp->mFunctionCache;
 198                 wfProfileOut( $fname );
 199                 return $text;
 200         }
 201
 202         /******************************************************
 203          * Callbacks                                          *
 204          ******************************************************/
 205
 206         function lang() { return $GLOBALS['wgContLanguageCode']; }
 207
 208         function dir() {
 209                 global $wgContLang;
 210                 return $wgContLang->isRTL() ? 'rtl' : 'ltr';
 211         }
 212
 213         function mimetype() { return $GLOBALS['wgMimeType']; }
 214         function charset() { return $GLOBALS['wgOutputEncoding']; }
 215         function headlinks() {
 216                 return cbt_value( $this->mOut->getHeadLinks(), 'dynamic' );
 217         }
 218         function headscripts() {
 219                 return cbt_value( $this->mOut->getScript(), 'dynamic' );
 220         }
 221
 222         function pagetitle() {
 223                 return cbt_value( $this->mOut->getHTMLTitle(), array( 'title', 'lang' ) );
 224         }
 225
 226         function stylepath() { return $GLOBALS['wgStylePath']; }
 227         function stylename() { return $this->mStyleName; }
 228
 229         function notprintable() {
 230                 global $wgRequest;
 231                 return cbt_value( !$wgRequest->getBool( 'printable' ), 'nonview dynamic' );
 232         }
 233
 234         function jsmimetype() { return $GLOBALS['wgJsMimeType']; }
 235
 236         function jsvarurl() {
 237                 global $wgUseSiteJs, $wgUser;
 238                 if ( !$wgUseSiteJs ) return '';
 239
 240                 if ( $wgUser->isLoggedIn() ) {
 241                         $url = self::makeUrl( '-','action=raw&smaxage=0&gen=js' );
 242                 } else {
 243                         $url = self::makeUrl( '-','action=raw&gen=js' );
 244                 }
 245                 return cbt_value( $url, 'loggedin' );
 246         }
 247
 248         function pagecss() {
 249                 global $wgHooks;
 250
 251                 $out = false;
 252                 wfRunHooks( 'SkinTemplateSetupPageCss', array( &$out ) );
 253
 254                 // Unknown dependencies
 255                 return cbt_value( $out, 'dynamic' );
 256         }
 257
 258         function usercss() {
 259                 if ( $this->isCssPreview() ) {
 260                         global $wgRequest;
 261                         $usercss = $this->makeStylesheetCdata( $wgRequest->getText('wpTextbox1') );
 262                 } else {
 263                         $usercss = $this->makeStylesheetLink( self::makeUrl($this->getUserPageText() .
 264                                 '/'.$this->mStyleName.'.css', 'action=raw&ctype=text/css' ) );
 265                 }
 266
 267                 // Dynamic when not an ordinary page view, also depends on the username
 268                 return cbt_value( $usercss, array( 'nonview dynamic', 'user' ) );
 269         }
 270
 271         function sitecss() {
 272                 global $wgUseSiteCss;
 273                 if ( !$wgUseSiteCss ) {
 274                         return '';
 275                 }
 276
 277                 global $wgSquidMaxage, $wgContLang, $wgStylePath;
 278
 279                 $query = "action=raw&ctype=text/css&smaxage=$wgSquidMaxage";
 280
 281                 $sitecss = '';
 282                 if ( $wgContLang->isRTL() ) {
 283                         $sitecss .= $this->makeStylesheetLink( $wgStylePath . '/' . $this->mStyleName . '/rtl.css' ) . "\n";
 284                 }
 285
 286                 $sitecss .= $this->makeStylesheetLink( self::makeNSUrl( 'Common.css', $query, NS_MEDIAWIKI ) ) . "\n";
 287                 $sitecss .= $this->makeStylesheetLink( self::makeNSUrl( ucfirst( $this->mStyleName ) . '.css', $query, NS_MEDIAWIKI ) ) . "\n";
 288
 289                 // No deps
 290                 return $sitecss;
 291         }
 292
 293         function gencss() {
 294                 global $wgUseSiteCss;
 295                 if ( !$wgUseSiteCss ) return '';
 296
 297                 global $wgSquidMaxage, $wgUser, $wgAllowUserCss;
 298                 if ( $this->isCssPreview() ) {
 299                         $siteargs = '&smaxage=0&maxage=0';
 300                 } else {
 301                         $siteargs = '&maxage=' . $wgSquidMaxage;
 302                 }
 303                 if ( $wgAllowUserCss && $wgUser->isLoggedIn() ) {
 304                         $siteargs .= '&ts={user_touched}';
 305                         $isTemplate = true;
 306                 } else {
 307                         $isTemplate = false;
 308                 }
 309
 310                 $link = $this->makeStylesheetLink( self::makeUrl('-','action=raw&gen=css' . $siteargs) ) . "\n";
 311
 312                 if ( $wgAllowUserCss ) {
 313                         $deps = 'loggedin';
 314                 } else {
 315                         $deps = array();
 316                 }
 317                 return cbt_value( $link, $deps, $isTemplate );
 318         }
 319
 320         function user_touched() {
 321                 global $wgUser;
 322                 return cbt_value( $wgUser->mTouched, 'dynamic' );
 323         }
 324
 325         function userjs() {
 326                 global $wgAllowUserJs, $wgJsMimeType;
 327                 if ( !$wgAllowUserJs ) return '';
 328
 329                 if ( $this->isJsPreview() ) {
 330                         $url = '';
 331                 } else {
 332                         $url = self::makeUrl($this->getUserPageText().'/'.$this->mStyleName.'.js', 'action=raw&ctype='.$wgJsMimeType.'&dontcountme=s');
 333                 }
 334                 return cbt_value( $url, array( 'nonview dynamic', 'user' ) );
 335         }
 336
 337         function userjsprev() {
 338                 global $wgAllowUserJs, $wgRequest;
 339                 if ( !$wgAllowUserJs ) return '';
 340                 if ( $this->isJsPreview() ) {
 341                         $js = '/*<![CDATA[*/ ' . $wgRequest->getText('wpTextbox1') . ' /*]]>*/';
 342                 } else {
 343                         $js = '';
 344                 }
 345                 return cbt_value( $js, array( 'nonview dynamic' ) );
 346         }
 347
 348         function trackbackhtml() {
 349                 global $wgUseTrackbacks;
 350                 if ( !$wgUseTrackbacks ) return '';
 351
 352                 if ( $this->mOut->isArticleRelated() ) {
 353                         $tb = $this->mTitle->trackbackRDF();
 354                 } else {
 355                         $tb = '';
 356                 }
 357                 return cbt_value( $tb, 'dynamic' );
 358         }
 359
 360         function body_ondblclick() {
 361                 global $wgUser;
 362                 if( $this->isEditable() && $wgUser->getOption("editondblclick") ) {
 363                         $js = 'document.location = "' . $this->getEditUrl() .'";';
 364                 } else {
 365                         $js = '';
 366                 }
 367
 368                 if ( User::getDefaultOption('editondblclick') ) {
 369                         return cbt_value( $js, 'user', 'title' );
 370                 } else {
 371                         // Optimise away for logged-out users
 372                         return cbt_value( $js, 'loggedin dynamic' );
 373                 }
 374         }
 375
 376         function body_onload() {
 377                 global $wgUser;
 378                 if ( $this->isEditable() && $wgUser->getOption( 'editsectiononrightclick' ) ) {
 379                         $js = 'setupRightClickEdit()';
 380                 } else {
 381                         $js = '';
 382                 }
 383                 return cbt_value( $js, 'loggedin dynamic' );
 384         }
 385
 386         function nsclass() {
 387                 return cbt_value( 'ns-' . $this->mTitle->getNamespace(), 'title' );
 388         }
 389
 390         function sitenotice() {
 391                 // Perhaps this could be given special dependencies using our knowledge of what
 392                 // wfGetSiteNotice() depends on.
 393                 return cbt_value( wfGetSiteNotice(), 'dynamic' );
 394         }
 395
 396         function title() {
 397                 return cbt_value( $this->mOut->getPageTitle(), array( 'title', 'lang' ) );
 398         }
 399
 400         function title_urlform() {
 401                 return cbt_value( $this->getThisTitleUrlForm(), 'title' );
 402         }
 403
 404         function title_userurl() {
 405                 return cbt_value( urlencode( $this->mTitle->getDBkey() ), 'title' );
 406         }
 407
 408         function subtitle() {
 409                 $subpagestr = $this->subPageSubtitle();
 410                 if ( !empty( $subpagestr ) ) {
 411                         $s = '<span class="subpages">'.$subpagestr.'</span>'.$this->mOut->getSubtitle();
 412                 } else {
 413                         $s = $this->mOut->getSubtitle();
 414                 }
 415                 return cbt_value( $s, array( 'title', 'nonview dynamic' ) );
 416         }
 417
 418         function undelete() {
 419                 return cbt_value( $this->getUndeleteLink(), array( 'title', 'lang' ) );
 420         }
 421
 422         function newtalk() {
 423                 global $wgUser, $wgDBname;
 424                 $newtalks = $wgUser->getNewMessageLinks();
 425
 426                 if (count($newtalks) == 1 && $newtalks[0]["wiki"] === $wgDBname) {
 427                         $usertitle = $this->getUserPageTitle();
 428                         $usertalktitle = $usertitle->getTalkPage();
 429                         if( !$usertalktitle->equals( $this->mTitle ) ) {
 430                                 $ntl = wfMsg( 'youhavenewmessages',
 431                                         $this->makeKnownLinkObj(
 432                                                 $usertalktitle,
 433                                                 wfMsgHtml( 'newmessageslink' ),
 434                                                 'redirect=no'
 435                                         ),
 436                                         $this->makeKnownLinkObj(
 437                                                 $usertalktitle,
 438                                                 wfMsgHtml( 'newmessagesdifflink' ),
 439                                                 'diff=cur'
 440                                         )
 441                                 );
 442                                 # Disable Cache
 443                                 $this->mOut->setSquidMaxage(0);
 444                         }
 445                 } else if (count($newtalks)) {
 446                         $sep = str_replace("_", " ", wfMsgHtml("newtalkseperator"));
 447                         $msgs = array();
 448                         foreach ($newtalks as $newtalk) {
 449                                 $msgs[] = wfElement("a",
 450                                         array('href' => $newtalk["link"]), $newtalk["wiki"]);
 451                         }
 452                         $parts = implode($sep, $msgs);
 453                         $ntl = wfMsgHtml('youhavenewmessagesmulti', $parts);
 454                         $this->mOut->setSquidMaxage(0);
 455                 } else {
 456                         $ntl = '';
 457                 }
 458                 return cbt_value( $ntl, 'dynamic' );
 459         }
 460
 461         function showjumplinks() {
 462                 global $wgUser;
 463                 return cbt_value( $wgUser->getOption( 'showjumplinks' ) ? 'true' : '', 'user' );
 464         }
 465
 466         function bodytext() {
 467                 return cbt_value( $this->mOut->getHTML(), 'dynamic' );
 468         }
 469
 470         function catlinks() {
 471                 if ( !isset( $this->mCatlinks ) ) {
 472                         $this->mCatlinks = $this->getCategories();
 473                 }
 474                 return cbt_value( $this->mCatlinks, 'dynamic' );
 475         }
 476
 477         function extratabs( $itemTemplate ) {
 478                 global $wgContLang, $wgDisableLangConversion;
 479
 480                 $etpl = cbt_escape( $itemTemplate );
 481
 482                 /* show links to different language variants */
 483                 $variants = $wgContLang->getVariants();
 484                 $s = '';
 485                 if ( !$wgDisableLangConversion && count( $wgContLang->getVariants() ) > 1 ) {
 486                         $vcount=0;
 487                         foreach ( $variants as $code ) {
 488                                 $name = $wgContLang->getVariantname( $code );
 489                                 if ( $name == 'disable' ) {
 490                                         continue;
 491                                 }
 492                                 $code = cbt_escape( $code );
 493                                 $name = cbt_escape( $name );
 494                                 $s .= "{ca_variant {{$code}} {{$name}} {{$vcount}} {{$etpl}}}\n";
 495                                 $vcount ++;
 496                         }
 497                 }
 498                 return cbt_value( $s, array(), true );
 499         }
 500
 501         function is_special() { return cbt_value( $this->mTitle->getNamespace() == NS_SPECIAL, 'title' ); }
 502         function can_edit() { return cbt_value( (string)($this->mTitle->userCan( 'edit' )), 'dynamic' ); }
 503         function can_move() { return cbt_value( (string)($this->mTitle->userCan( 'move' )), 'dynamic' ); }
 504         function is_talk() { return cbt_value( (string)($this->mTitle->isTalkPage()), 'title' ); }
 505         function is_protected() { return cbt_value( (string)$this->mTitle->isProtected(), 'dynamic' ); }
 506         function nskey() { return cbt_value( $this->mTitle->getNamespaceKey(), 'title' ); }
 507
 508         function request_url() {
 509                 global $wgRequest;
 510                 return cbt_value( $wgRequest->getRequestURL(), 'dynamic' );
 511         }
 512
 513         function subject_url() {
 514                 $title = $this->getSubjectPage();
 515                 if ( $title->exists() ) {
 516                         $url = $title->getLocalUrl();
 517                 } else {
 518                         $url = $title->getLocalUrl( 'action=edit' );
 519                 }
 520                 return cbt_value( $url, 'title' );
 521         }
 522
 523         function talk_url() {
 524                 $title = $this->getTalkPage();
 525                 if ( $title->exists() ) {
 526                         $url = $title->getLocalUrl();
 527                 } else {
 528                         $url = $title->getLocalUrl( 'action=edit' );
 529                 }
 530                 return cbt_value( $url, 'title' );
 531         }
 532
 533         function edit_url() {
 534                 return cbt_value( $this->getEditUrl(), array( 'title', 'nonview dynamic' ) );
 535         }
 536
 537         function move_url() {
 538                 return cbt_value( $this->makeSpecialParamUrl( 'Movepage' ), array(), true );
 539         }
 540
 541         function localurl( $query ) {
 542                 return cbt_value( $this->mTitle->getLocalURL( $query ), 'title' );
 543         }
 544
 545         function selecttab( $tab, $extraclass = '' ) {
 546                 if ( !isset( $this->mSelectedTab ) ) {
 547                         $prevent_active_tabs = false ;
 548                         wfRunHooks( 'SkinTemplatePreventOtherActiveTabs', array( &$this , &$preventActiveTabs ) );
 549
 550                         $actionTabs = array(
 551                                 'edit' => 'edit',
 552                                 'submit' => 'edit',
 553                                 'history' => 'history',
 554                                 'protect' => 'protect',
 555                                 'unprotect' => 'protect',
 556                                 'delete' => 'delete',
 557                                 'watch' => 'watch',
 558                                 'unwatch' => 'watch',
 559                         );
 560                         if ( $preventActiveTabs ) {
 561                                 $this->mSelectedTab = false;
 562                         } else {
 563                                 $action = $this->getAction();
 564                                 $section = $this->getSection();
 565
 566                                 if ( isset( $actionTabs[$action] ) ) {
 567                                         $this->mSelectedTab = $actionTabs[$action];
 568
 569                                         if ( $this->mSelectedTab == 'edit' && $section == 'new' ) {
 570                                                 $this->mSelectedTab = 'addsection';
 571                                         }
 572                                 } elseif ( $this->mTitle->isTalkPage() ) {
 573                                         $this->mSelectedTab = 'talk';
 574                                 } else {
 575                                         $this->mSelectedTab = 'subject';
 576                                 }
 577                         }
 578                 }
 579                 if ( $extraclass ) {
 580                         if ( $this->mSelectedTab == $tab ) {
 581                                 $s = 'class="selected ' . htmlspecialchars( $extraclass ) . '"';
 582                         } else {
 583                                 $s = 'class="' . htmlspecialchars( $extraclass ) . '"';
 584                         }
 585                 } else {
 586                         if ( $this->mSelectedTab == $tab ) {
 587                                 $s = 'class="selected"';
 588                         } else {
 589                                 $s = '';
 590                         }
 591                 }
 592                 return cbt_value( $s, array( 'nonview dynamic', 'title' ) );
 593         }
 594
 595         function subject_newclass() {
 596                 $title = $this->getSubjectPage();
 597                 $class = $title->exists() ? '' : 'new';
 598                 return cbt_value( $class, 'dynamic' );
 599         }
 600
 601         function talk_newclass() {
 602                 $title = $this->getTalkPage();
 603                 $class = $title->exists() ? '' : 'new';
 604                 return cbt_value( $class, 'dynamic' );
 605         }
 606
 607         function ca_variant( $code, $name, $index, $template ) {
 608                 global $wgContLang;
 609                 $selected = ($code == $wgContLang->getPreferredVariant());
 610                 $action = $this->getAction();
 611                 $actstr = '';
 612                 if( $action )
 613                         $actstr = 'action=' . $action . '&';
 614                 $s = strtr( $template, array(
 615                         '$id' => htmlspecialchars( 'varlang-' . $index ),
 616                         '$class' => $selected ? 'class="selected"' : '',
 617                         '$text' => $name,
 618                         '$href' => htmlspecialchars( $this->mTitle->getLocalUrl( $actstr . 'variant=' . $code ) )
 619                 ));
 620                 return cbt_value( $s, 'dynamic' );
 621         }
 622
 623         function is_watching() {
 624                 return cbt_value( (string)$this->mTitle->userIsWatching(), array( 'dynamic' ) );
 625         }
 626
 627
 628         function personal_urls( $itemTemplate ) {
 629                 global $wgShowIPinHeader, $wgContLang;
 630
 631                 # Split this function up into many small functions, to obtain the
 632                 # best specificity in the dependencies of each one. The template below
 633                 # has no dependencies, so its generation, and any static subfunctions,
 634                 # can be optimised away.
 635                 $etpl = cbt_escape( $itemTemplate );
 636                 $s = "
 637                         {userpage {{$etpl}}}
 638                         {mytalk {{$etpl}}}
 639                         {preferences {{$etpl}}}
 640                         {watchlist {{$etpl}}}
 641                         {mycontris {{$etpl}}}
 642                         {logout {{$etpl}}}
 643                 ";
 644
 645                 if ( $wgShowIPinHeader ) {
 646                         $s .= "
 647                                 {anonuserpage {{$etpl}}}
 648                                 {anontalk {{$etpl}}}
 649                                 {anonlogin {{$etpl}}}
 650                         ";
 651                 } else {
 652                         $s .= "{login {{$etpl}}}\n";
 653                 }
 654                 // No dependencies
 655                 return cbt_value( $s, array(), true /*this is a template*/ );
 656         }
 657
 658         function userpage( $itemTemplate ) {
 659                 global $wgUser;
 660                 if ( $this->isLoggedIn() ) {
 661                         $userPage = $this->getUserPageTitle();
 662                         $s = $this->makeTemplateLink( $itemTemplate, 'userpage', $userPage, $wgUser->getName() );
 663                 } else {
 664                         $s = '';
 665                 }
 666                 return cbt_value( $s, 'user' );
 667         }
 668
 669         function mytalk( $itemTemplate ) {
 670                 global $wgUser;
 671                 if ( $this->isLoggedIn() ) {
 672                         $userPage = $this->getUserPageTitle();
 673                         $talkPage = $userPage->getTalkPage();
 674                         $s = $this->makeTemplateLink( $itemTemplate, 'mytalk', $talkPage, wfMsg('mytalk') );
 675                 } else {
 676                         $s = '';
 677                 }
 678                 return cbt_value( $s, 'user' );
 679         }
 680
 681         function preferences( $itemTemplate ) {
 682                 if ( $this->isLoggedIn() ) {
 683                         $s = $this->makeSpecialTemplateLink( $itemTemplate, 'preferences',
 684                                 'Preferences', wfMsg( 'preferences' ) );
 685                 } else {
 686                         $s = '';
 687                 }
 688                 return cbt_value( $s, array( 'loggedin', 'lang' ) );
 689         }
 690
 691         function watchlist( $itemTemplate ) {
 692                 if ( $this->isLoggedIn() ) {
 693                         $s = $this->makeSpecialTemplateLink( $itemTemplate, 'watchlist',
 694                                 'Watchlist', wfMsg( 'watchlist' ) );
 695                 } else {
 696                         $s = '';
 697                 }
 698                 return cbt_value( $s, array( 'loggedin', 'lang' ) );
 699         }
 700
 701         function mycontris( $itemTemplate ) {
 702                 if ( $this->isLoggedIn() ) {
 703                         global $wgUser;
 704                         $s = $this->makeSpecialTemplateLink( $itemTemplate, 'mycontris',
 705                                 "Contributions/" . $wgUser->getTitleKey(), wfMsg('mycontris') );
 706                 } else {
 707                         $s = '';
 708                 }
 709                 return cbt_value( $s, 'user' );
 710         }
 711
 712         function logout( $itemTemplate ) {
 713                 if ( $this->isLoggedIn() ) {
 714                         $s = $this->makeSpecialTemplateLink( $itemTemplate, 'logout',
 715                                 'Userlogout', wfMsg( 'userlogout' ),
 716                                         $this->mTitle->getNamespace() === NS_SPECIAL && $this->mTitle->getText() === 'Preferences'
 717                                         ? '' : "returnto=" . $this->mTitle->getPrefixedURL() );
 718                 } else {
 719                         $s = '';
 720                 }
 721                 return cbt_value( $s, 'loggedin dynamic' );
 722         }
 723
 724         function anonuserpage( $itemTemplate ) {
 725                 if ( $this->isLoggedIn() ) {
 726                         $s = '';
 727                 } else {
 728                         global $wgUser;
 729                         $userPage = $this->getUserPageTitle();
 730                         $s = $this->makeTemplateLink( $itemTemplate, 'userpage', $userPage, $wgUser->getName() );
 731                 }
 732                 return cbt_value( $s, '!loggedin dynamic' );
 733         }
 734
 735         function anontalk( $itemTemplate ) {
 736                 if ( $this->isLoggedIn() ) {
 737                         $s = '';
 738                 } else {
 739                         $userPage = $this->getUserPageTitle();
 740                         $talkPage = $userPage->getTalkPage();
 741                         $s = $this->makeTemplateLink( $itemTemplate, 'mytalk', $talkPage, wfMsg('anontalk') );
 742                 }
 743                 return cbt_value( $s, '!loggedin dynamic' );
 744         }
 745
 746         function anonlogin( $itemTemplate ) {
 747                 if ( $this->isLoggedIn() ) {
 748                         $s = '';
 749                 } else {
 750                         $s = $this->makeSpecialTemplateLink( $itemTemplate, 'anonlogin', 'Userlogin',
 751                                 wfMsg( 'userlogin' ), 'returnto=' . urlencode( $this->getThisPDBK() ) );
 752                 }
 753                 return cbt_value( $s, '!loggedin dynamic' );
 754         }
 755
 756         function login( $itemTemplate ) {
 757                 if ( $this->isLoggedIn() ) {
 758                         $s = '';
 759                 } else {
 760                         $s = $this->makeSpecialTemplateLink( $itemTemplate, 'login', 'Userlogin',
 761                                 wfMsg( 'userlogin' ), 'returnto=' . urlencode( $this->getThisPDBK() ) );
 762                 }
 763                 return cbt_value( $s, '!loggedin dynamic' );
 764         }
 765
 766         function logopath() { return $GLOBALS['wgLogo']; }
 767         function mainpage() { return self::makeMainPageUrl(); }
 768
 769         function sidebar( $startSection, $endSection, $innerTpl ) {
 770                 $s = '';
 771                 $lines = explode( "\n", wfMsgForContent( 'sidebar' ) );
 772                 $firstSection = true;
 773                 foreach ($lines as $line) {
 774                         if (strpos($line, '*') !== 0)
 775                                 continue;
 776                         if (strpos($line, '**') !== 0) {
 777                                 $bar = trim($line, '* ');
 778                                 $name = wfMsg( $bar );
 779                                 if (wfEmptyMsg($bar, $name)) {
 780                                         $name = $bar;
 781                                 }
 782                                 if ( $firstSection ) {
 783                                         $firstSection = false;
 784                                 } else {
 785                                         $s .= $endSection;
 786                                 }
 787                                 $s .= strtr( $startSection,
 788                                         array(
 789                                                 '$bar' => htmlspecialchars( $bar ),
 790                                                 '$barname' => $name
 791                                         ) );
 792                         } else {
 793                                 if (strpos($line, '|') !== false) { // sanity check
 794                                         $line = explode( '|' , trim($line, '* '), 2 );
 795                                         $link = wfMsgForContent( $line[0] );
 796                                         if ($link == '-')
 797                                                 continue;
 798                                         if (wfEmptyMsg($line[1], $text = wfMsg($line[1])))
 799                                                 $text = $line[1];
 800                                         if (wfEmptyMsg($line[0], $link))
 801                                                 $link = $line[0];
 802                                         $href = self::makeInternalOrExternalUrl( $link );
 803
 804                                         $s .= strtr( $innerTpl,
 805                                                 array(
 806                                                         '$text' => htmlspecialchars( $text ),
 807                                                         '$href' => htmlspecialchars( $href ),
 808                                                         '$id' => htmlspecialchars( 'n-' . strtr($line[1], ' ', '-') ),
 809                                                         '$classactive' => ''
 810                                                 ) );
 811                                 } else { continue; }
 812                         }
 813                 }
 814                 if ( !$firstSection ) {
 815                         $s .= $endSection;
 816                 }
 817
 818                 // Depends on user language only
 819                 return cbt_value( $s, 'lang' );
 820         }
 821
 822         function searchaction() {
 823                 // Static link
 824                 return $this->getSearchLink();
 825         }
 826
 827         function search() {
 828                 global $wgRequest;
 829                 return cbt_value( trim( $this->getSearch() ), 'special dynamic' );
 830         }
 831
 832         function notspecialpage() {
 833                 return cbt_value( $this->mTitle->getNamespace() != NS_SPECIAL, 'special' );
 834         }
 835
 836         function nav_whatlinkshere() {
 837                 return cbt_value( $this->makeSpecialParamUrl('Whatlinkshere' ), array(), true );
 838         }
 839
 840         function article_exists() {
 841                 return cbt_value( (string)($this->mTitle->getArticleId() !== 0), 'title' );
 842         }
 843
 844         function nav_recentchangeslinked() {
 845                 return cbt_value( $this->makeSpecialParamUrl('Recentchangeslinked' ), array(), true );
 846         }
 847
 848         function feeds( $itemTemplate = '' ) {
 849                 if ( !$this->mOut->isSyndicated() ) {
 850                         $feeds = '';
 851                 } elseif ( $itemTemplate == '' ) {
 852                         // boolean only required
 853                         $feeds = 'true';
 854                 } else {
 855                         $feeds = '';
 856                         global $wgFeedClasses, $wgRequest;
 857                         foreach( $wgFeedClasses as $format => $class ) {
 858                                 $feeds .= strtr( $itemTemplate,
 859                                         array(
 860                                                 '$key' => htmlspecialchars( $format ),
 861                                                 '$text' => $format,
 862                                                 '$href' => $wgRequest->appendQuery( "feed=$format" )
 863                                         ) );
 864                         }
 865                 }
 866                 return cbt_value( $feeds, 'special dynamic' );
 867         }
 868
 869         function is_userpage() {
 870                 list( $id, $ip ) = $this->getUserPageIdIp();
 871                 return cbt_value( (string)($id || $ip), 'title' );
 872         }
 873
 874         function is_ns_mediawiki() {
 875                 return cbt_value( (string)$this->mTitle->getNamespace() == NS_MEDIAWIKI, 'title' );
 876         }
 877
 878         function is_loggedin() {
 879                 global $wgUser;
 880                 return cbt_value( (string)($wgUser->isLoggedIn()), 'loggedin' );
 881         }
 882
 883         function nav_contributions() {
 884                 $url = $this->makeSpecialParamUrl( 'Contributions', '', '{title_userurl}' );
 885                 return cbt_value( $url, array(), true );
 886         }
 887
 888         function is_allowed( $right ) {
 889                 global $wgUser;
 890                 return cbt_value( (string)$wgUser->isAllowed( $right ), 'user' );
 891         }
 892
 893         function nav_blockip() {
 894                 $url = $this->makeSpecialParamUrl( 'Blockip', '', '{title_userurl}' );
 895                 return cbt_value( $url, array(), true );
 896         }
 897
 898         function nav_emailuser() {
 899                 global $wgEnableEmail, $wgEnableUserEmail, $wgUser;
 900                 if ( !$wgEnableEmail || !$wgEnableUserEmail ) return '';
 901
 902                 $url = $this->makeSpecialParamUrl( 'Emailuser', '', '{title_userurl}' );
 903                 return cbt_value( $url, array(), true );
 904         }
 905
 906         function nav_upload() {
 907                 global $wgEnableUploads, $wgUploadNavigationUrl;
 908                 if ( !$wgEnableUploads ) {
 909                         return '';
 910                 } elseif ( $wgUploadNavigationUrl ) {
 911                         return $wgUploadNavigationUrl;
 912                 } else {
 913                         return self::makeSpecialUrl('Upload');
 914                 }
 915         }
 916
 917         function nav_specialpages() {
 918                 return self::makeSpecialUrl('Specialpages');
 919         }
 920
 921         function nav_print() {
 922                 global $wgRequest, $wgArticle;
 923                 $action = $this->getAction();
 924                 $url = '';
 925                 if( $this->mTitle->getNamespace() !== NS_SPECIAL
 926                                 && ($action == '' || $action == 'view' || $action == 'purge' ) )
 927                 {
 928                         $revid = $wgArticle->getLatest();
 929                         if ( $revid != 0 ) {
 930                                 $url = $wgRequest->appendQuery( 'printable=yes' );
 931                         }
 932                 }
 933                 return cbt_value( $url, array( 'nonview dynamic', 'title' ) );
 934         }
 935
 936         function nav_permalink() {
 937                 $url = (string)$this->getPermalink();
 938                 return cbt_value( $url, 'dynamic' );
 939         }
 940
 941         function nav_trackbacklink() {
 942                 global $wgUseTrackbacks;
 943                 if ( !$wgUseTrackbacks ) return '';
 944
 945                 return cbt_value( $this->mTitle->trackbackURL(), 'title' );
 946         }
 947
 948         function is_permalink() {
 949                 return cbt_value( (string)($this->getPermalink() === false), 'nonview dynamic' );
 950         }
 951
 952         function toolboxend() {
 953                 // This is where the MonoBookTemplateToolboxEnd hook went in the old skin
 954                 return '';
 955         }
 956
 957         function language_urls( $outer, $inner ) {
 958                 global $wgHideInterlanguageLinks, $wgOut, $wgContLang;
 959                 if ( $wgHideInterlanguageLinks ) return '';
 960
 961                 $links = $wgOut->getLanguageLinks();
 962                 $s = '';
 963                 if ( count( $links ) ) {
 964                         foreach( $links as $l ) {
 965                                 $tmp = explode( ':', $l, 2 );
 966                                 $nt = Title::newFromText( $l );
 967                                 $s .= strtr( $inner,
 968                                         array(
 969                                                 '$class' => htmlspecialchars( 'interwiki-' . $tmp[0] ),
 970                                                 '$href' => htmlspecialchars( $nt->getFullURL() ),
 971                                                 '$text' => ($wgContLang->getLanguageName( $nt->getInterwiki() ) != ''?
 972                                                         $wgContLang->getLanguageName( $nt->getInterwiki() ) : $l ),
 973                                         )
 974                                 );
 975                         }
 976                         $s = str_replace( '$body', $s, $outer );
 977                 }
 978                 return cbt_value( $s, 'dynamic' );
 979         }
 980
 981         function poweredbyico() { return $this->getPoweredBy(); }
 982         function copyrightico() { return $this->getCopyrightIcon(); }
 983
 984         function lastmod() {
 985                 global $wgMaxCredits;
 986                 if ( $wgMaxCredits ) return '';
 987
 988                 if ( !isset( $this->mLastmod ) ) {
 989                         if ( $this->isCurrentArticleView() ) {
 990                                 $this->mLastmod = $this->lastModified();
 991                         } else {
 992                                 $this->mLastmod = '';
 993                         }
 994                 }
 995                 return cbt_value( $this->mLastmod, 'dynamic' );
 996         }
 997
 998         function viewcount() {
 999                 global $wgDisableCounters;
1000                 if ( $wgDisableCounters ) return '';
1001
1002                 global $wgLang, $wgArticle;
1003                 if ( is_object( $wgArticle ) ) {
1004                         $viewcount = $wgLang->formatNum( $wgArticle->getCount() );
1005                         if ( $viewcount ) {
1006                                 $viewcount = wfMsg( "viewcount", $viewcount );
1007                         } else {
1008                                 $viewcount = '';
1009                         }
1010                 } else {
1011                         $viewcount = '';
1012                 }
1013                 return cbt_value( $viewcount, 'dynamic' );
1014         }
1015
1016         function numberofwatchingusers() {
1017                 global $wgPageShowWatchingUsers;
1018                 if ( !$wgPageShowWatchingUsers ) return '';
1019
1020                 $dbr = wfGetDB( DB_SLAVE );
1021                 extract( $dbr->tableNames( 'watchlist' ) );
1022                 $sql = "SELECT COUNT(*) AS n FROM $watchlist
1023                         WHERE wl_title='" . $dbr->strencode($this->mTitle->getDBKey()) .
1024                         "' AND  wl_namespace=" . $this->mTitle->getNamespace() ;
1025                 $res = $dbr->query( $sql, 'SkinTemplate::outputPage');
1026                 $row = $dbr->fetchObject( $res );
1027                 $num = $row->n;
1028                 if ($num > 0) {
1029                         $s = wfMsg('number_of_watching_users_pageview', $num);
1030                 } else {
1031                         $s = '';
1032                 }
1033                 return cbt_value( $s, 'dynamic' );
1034         }
1035
1036         function credits() {
1037                 global $wgMaxCredits;
1038                 if ( !$wgMaxCredits ) return '';
1039
1040                 if ( $this->isCurrentArticleView() ) {
1041                         require_once("Credits.php");
1042                         global $wgArticle, $wgShowCreditsIfMax;
1043                         $credits = getCredits($wgArticle, $wgMaxCredits, $wgShowCreditsIfMax);
1044                 } else {
1045                         $credits = '';
1046                 }
1047                 return cbt_value( $credits, 'view dynamic' );
1048         }
1049
1050         function normalcopyright() {
1051                 return $this->getCopyright( 'normal' );
1052         }
1053
1054         function historycopyright() {
1055                 return $this->getCopyright( 'history' );
1056         }
1057
1058         function is_currentview() {
1059                 global $wgRequest;
1060                 return cbt_value( (string)$this->isCurrentArticleView(), 'view' );
1061         }
1062
1063         function usehistorycopyright() {
1064                 global $wgRequest;
1065                 if ( wfMsgForContent( 'history_copyright' ) == '-' ) return '';
1066
1067                 $oldid = $this->getOldId();
1068                 $diff = $this->getDiff();
1069                 $use = (string)(!is_null( $oldid ) && is_null( $diff ));
1070                 return cbt_value( $use, 'nonview dynamic' );
1071         }
1072
1073         function privacy() {
1074                 return cbt_value( $this->privacyLink(), 'lang' );
1075         }
1076         function about() {
1077                 return cbt_value( $this->aboutLink(), 'lang' );
1078         }
1079         function disclaimer() {
1080                 return cbt_value( $this->disclaimerLink(), 'lang' );
1081         }
1082         function tagline() {
1083                 # A reference to this tag existed in the old MonoBook.php, but the
1084                 # template data wasn't set anywhere
1085                 return '';
1086         }
1087         function reporttime() {
1088                 return cbt_value( $this->mOut->reportTime(), 'dynamic' );
1089         }
1090
1091         function msg( $name ) {
1092                 return cbt_value( wfMsg( $name ), 'lang' );
1093         }
1094
1095         function fallbackmsg( $name, $fallback ) {
1096                 $text = wfMsg( $name );
1097                 if ( wfEmptyMsg( $name, $text ) ) {
1098                         $text = $fallback;
1099                 }
1100                 return cbt_value( $text,  'lang' );
1101         }
1102
1103         /******************************************************
1104          * Utility functions                                  *
1105          ******************************************************/
1106
1107         /** Return true if this request is a valid, secure CSS preview */
1108         function isCssPreview() {
1109                 if ( !isset( $this->mCssPreview ) ) {
1110                         global $wgRequest, $wgAllowUserCss, $wgUser;
1111                         $this->mCssPreview =
1112                                 $wgAllowUserCss &&
1113                                 $wgUser->isLoggedIn() &&
1114                                 $this->mTitle->isCssSubpage() &&
1115                                 $this->userCanPreview( $this->getAction() );
1116                 }
1117                 return $this->mCssPreview;
1118         }
1119
1120         /** Return true if this request is a valid, secure JS preview */
1121         function isJsPreview() {
1122                 if ( !isset( $this->mJsPreview ) ) {
1123                         global $wgRequest, $wgAllowUserJs, $wgUser;
1124                         $this->mJsPreview =
1125                                 $wgAllowUserJs &&
1126                                 $wgUser->isLoggedIn() &&
1127                                 $this->mTitle->isJsSubpage() &&
1128                                 $this->userCanPreview( $this->getAction() );
1129                 }
1130                 return $this->mJsPreview;
1131         }
1132
1133         /** Get the title of the $wgUser's user page */
1134         function getUserPageTitle() {
1135                 if ( !isset( $this->mUserPageTitle ) ) {
1136                         global $wgUser;
1137                         $this->mUserPageTitle = $wgUser->getUserPage();
1138                 }
1139                 return $this->mUserPageTitle;
1140         }
1141
1142         /** Get the text of the user page title */
1143         function getUserPageText() {
1144                 if ( !isset( $this->mUserPageText ) ) {
1145                         $userPage = $this->getUserPageTitle();
1146                         $this->mUserPageText = $userPage->getPrefixedText();
1147                 }
1148                 return $this->mUserPageText;
1149         }
1150
1151         /** Make an HTML element for a stylesheet link */
1152         function makeStylesheetLink( $url ) {
1153                 return '<link rel="stylesheet" type="text/css" href="' . htmlspecialchars( $url ) . "\"/>";
1154         }
1155
1156         /** Make an XHTML element for inline CSS */
1157         function makeStylesheetCdata( $style ) {
1158                 return "<style type=\"text/css\"> /*<![CDATA[*/ {$style} /*]]>*/ </style>";
1159         }
1160
1161         /** Get the edit URL for this page */
1162         function getEditUrl() {
1163                 if ( !isset( $this->mEditUrl ) ) {
1164                         $this->mEditUrl = $this->mTitle->getLocalUrl( $this->editUrlOptions() );
1165                 }
1166                 return $this->mEditUrl;
1167         }
1168
1169         /** Get the prefixed DB key for this page */
1170         function getThisPDBK() {
1171                 if ( !isset( $this->mThisPDBK ) ) {
1172                         $this->mThisPDBK = $this->mTitle->getPrefixedDbKey();
1173                 }
1174                 return $this->mThisPDBK;
1175         }
1176
1177         function getThisTitleUrlForm() {
1178                 if ( !isset( $this->mThisTitleUrlForm ) ) {
1179                         $this->mThisTitleUrlForm = $this->mTitle->getPrefixedURL();
1180                 }
1181                 return $this->mThisTitleUrlForm;
1182         }
1183
1184         /**
1185          * If the current page is a user page, get the user's ID and IP. Otherwise return array(0,false)
1186          */
1187         function getUserPageIdIp() {
1188                 if ( !isset( $this->mUserPageId ) ) {
1189                         if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
1190                                 $this->mUserPageId = User::idFromName($this->mTitle->getText());
1191                                 $this->mUserPageIp = User::isIP($this->mTitle->getText());
1192                         } else {
1193                                 $this->mUserPageId = 0;
1194                                 $this->mUserPageIp = false;
1195                         }
1196                 }
1197                 return array( $this->mUserPageId, $this->mUserPageIp );
1198         }
1199
1200         /**
1201          * Returns a permalink URL, or false if the current page is already a
1202          * permalink, or blank if a permalink shouldn't be displayed
1203          */
1204         function getPermalink() {
1205                 if ( !isset( $this->mPermalink ) ) {
1206                         global $wgRequest, $wgArticle;
1207                         $action = $this->getAction();
1208                         $oldid = $this->getOldId();
1209                         $url = '';
1210                         if( $this->mTitle->getNamespace() !== NS_SPECIAL
1211                                         && $this->mTitle->getArticleId() != 0
1212                                         && ($action == '' || $action == 'view' || $action == 'purge' ) )
1213                         {
1214                                 if ( !$oldid ) {
1215                                         $revid = $wgArticle->getLatest();
1216                                         $url = $this->mTitle->getLocalURL( "oldid=$revid" );
1217                                 } else {
1218                                         $url = false;
1219                                 }
1220                         } else {
1221                                 $url = '';
1222                         }
1223                 }
1224                 return $url;
1225         }
1226
1227         /**
1228          * Returns true if the current page is an article, not a special page,
1229          * and we are viewing a revision, not a diff
1230          */
1231         function isArticleView() {
1232                 global $wgOut, $wgArticle, $wgRequest;
1233                 if ( !isset( $this->mIsArticleView ) ) {
1234                         $oldid = $this->getOldId();
1235                         $diff = $this->getDiff();
1236                         $this->mIsArticleView = $wgOut->isArticle() and
1237                                 (!is_null( $oldid ) or is_null( $diff )) and 0 != $wgArticle->getID();
1238                 }
1239                 return $this->mIsArticleView;
1240         }
1241
1242         function isCurrentArticleView() {
1243                 if ( !isset( $this->mIsCurrentArticleView ) ) {
1244                         global $wgOut, $wgArticle, $wgRequest;
1245                         $oldid = $this->getOldId();
1246                         $this->mIsCurrentArticleView = $wgOut->isArticle() && is_null( $oldid ) && 0 != $wgArticle->getID();
1247                 }
1248                 return $this->mIsCurrentArticleView;
1249         }
1250
1251
1252         /**
1253          * Return true if the current page is editable; if edit section on right
1254          * click should be enabled.
1255          */
1256         function isEditable() {
1257                 global $wgRequest;
1258                 $action = $this->getAction();
1259                 return ($this->mTitle->getNamespace() != NS_SPECIAL and !($action == 'edit' or $action == 'submit'));
1260         }
1261
1262         /** Return true if the user is logged in */
1263         function isLoggedIn() {
1264                 global $wgUser;
1265                 return $wgUser->isLoggedIn();
1266         }
1267
1268         /** Get the local URL of the current page */
1269         function getPageUrl() {
1270                 if ( !isset( $this->mPageUrl ) ) {
1271                         $this->mPageUrl = $this->mTitle->getLocalURL();
1272                 }
1273                 return $this->mPageUrl;
1274         }
1275
1276         /** Make a link to a title using a template */
1277         function makeTemplateLink( $template, $key, $title, $text ) {
1278                 $url = $title->getLocalUrl();
1279                 return strtr( $template,
1280                         array(
1281                                 '$key' => $key,
1282                                 '$classactive' => ($url == $this->getPageUrl()) ? 'class="active"' : '',
1283                                 '$class' => $title->getArticleID() == 0 ? 'class="new"' : '',
1284                                 '$href' => htmlspecialchars( $url ),
1285                                 '$text' => $text
1286                          ) );
1287         }
1288
1289         /** Make a link to a URL using a template */
1290         function makeTemplateLinkUrl( $template, $key, $url, $text ) {
1291                 return strtr( $template,
1292                         array(
1293                                 '$key' => $key,
1294                                 '$classactive' => ($url == $this->getPageUrl()) ? 'class="active"' : '',
1295                                 '$class' => '',
1296                                 '$href' => htmlspecialchars( $url ),
1297                                 '$text' => $text
1298                          ) );
1299         }
1300
1301         /** Make a link to a special page using a template */
1302         function makeSpecialTemplateLink( $template, $key, $specialName, $text, $query = '' ) {
1303                 $url = self::makeSpecialUrl( $specialName, $query );
1304                 // Ignore the query when comparing
1305                 $active = ($this->mTitle->getNamespace() == NS_SPECIAL && $this->mTitle->getDBkey() == $specialName);
1306                 return strtr( $template,
1307                         array(
1308                                 '$key' => $key,
1309                                 '$classactive' => $active ? 'class="active"' : '',
1310                                 '$class' => '',
1311                                 '$href' => htmlspecialchars( $url ),
1312                                 '$text' => $text
1313                          ) );
1314         }
1315
1316         function loadRequestValues() {
1317                 global $wgRequest;
1318                 $this->mAction = $wgRequest->getText( 'action' );
1319                 $this->mOldId = $wgRequest->getVal( 'oldid' );
1320                 $this->mDiff = $wgRequest->getVal( 'diff' );
1321                 $this->mSection = $wgRequest->getVal( 'section' );
1322                 $this->mSearch = $wgRequest->getVal( 'search' );
1323                 $this->mRequestValuesLoaded = true;
1324         }
1325
1326
1327
1328         /** Get the action parameter of the request */
1329         function getAction() {
1330                 if ( !isset( $this->mRequestValuesLoaded ) ) {
1331                         $this->loadRequestValues();
1332                 }
1333                 return $this->mAction;
1334         }
1335
1336         /** Get the oldid parameter */
1337         function getOldId() {
1338                 if ( !isset( $this->mRequestValuesLoaded ) ) {
1339                         $this->loadRequestValues();
1340                 }
1341                 return $this->mOldId;
1342         }
1343
1344         /** Get the diff parameter */
1345         function getDiff() {
1346                 if ( !isset( $this->mRequestValuesLoaded ) ) {
1347                         $this->loadRequestValues();
1348                 }
1349                 return $this->mDiff;
1350         }
1351
1352         function getSection() {
1353                 if ( !isset( $this->mRequestValuesLoaded ) ) {
1354                         $this->loadRequestValues();
1355                 }
1356                 return $this->mSection;
1357         }
1358
1359         function getSearch() {
1360                 if ( !isset( $this->mRequestValuesLoaded ) ) {
1361                         $this->loadRequestValues();
1362                 }
1363                 return $this->mSearch;
1364         }
1365
1366         /** Make a special page URL of the form [[Special:Somepage/{title_urlform}]] */
1367         function makeSpecialParamUrl( $name, $query = '', $param = '{title_urlform}' ) {
1368                 // Abuse makeTitle's lax validity checking to slip a control character into the URL
1369                 $title = Title::makeTitle( NS_SPECIAL, "$name/\x1a" );
1370                 $url = cbt_escape( $title->getLocalURL( $query ) );
1371                 // Now replace it with the parameter
1372                 return str_replace( '%1A', $param, $url );
1373         }
1374
1375         function getSubjectPage() {
1376                 if ( !isset( $this->mSubjectPage ) ) {
1377                         $this->mSubjectPage = $this->mTitle->getSubjectPage();
1378                 }
1379                 return $this->mSubjectPage;
1380         }
1381
1382         function getTalkPage() {
1383                 if ( !isset( $this->mTalkPage ) ) {
1384                         $this->mTalkPage = $this->mTitle->getTalkPage();
1385                 }
1386                 return $this->mTalkPage;
1387         }
1388 }
1389