includes/Article.php

   1 <?php
   2 /**
   3  * File for articles
   4  * @file
   5  */
   6
   7 /**
   8  * Class for viewing MediaWiki article and history.
   9  *
  10  * This maintains WikiPage functions for backwards compatibility.
  11  *
  12  * @TODO: move and rewrite code to an Action class
  13  *
  14  * See design.txt for an overview.
  15  * Note: edit user interface and cache support functions have been
  16  * moved to separate EditPage and HTMLFileCache classes.
  17  *
  18  * @internal documentation reviewed 15 Mar 2010
  19  */
  20 class Article extends Page {
  21         /**@{{
  22          * @private
  23          */
  24
  25         /**
  26          * @var IContextSource
  27          */
  28         protected $mContext;
  29
  30         /**
  31          * @var WikiPage
  32          */
  33         protected $mPage;
  34
  35         /**
  36          * @var ParserOptions: ParserOptions object for $wgUser articles
  37          */
  38         public $mParserOptions;
  39
  40         var $mContent;                    // !< #BC cruft
  41     var $mContentObject;              // !<
  42         var $mContentLoaded = false;      // !<
  43         var $mOldId;                      // !<
  44
  45         /**
  46          * @var Title
  47          */
  48         var $mRedirectedFrom = null;
  49
  50         /**
  51          * @var mixed: boolean false or URL string
  52          */
  53         var $mRedirectUrl = false;        // !<
  54         var $mRevIdFetched = 0;           // !<
  55
  56         /**
  57          * @var Revision
  58          */
  59         var $mRevision = null;
  60
  61         /**
  62          * @var ParserOutput
  63          */
  64         var $mParserOutput;
  65
  66         /**@}}*/
  67
  68         /**
  69          * Constructor and clear the article
  70          * @param $title Title Reference to a Title object.
  71          * @param $oldId Integer revision ID, null to fetch from request, zero for current
  72          */
  73         public function __construct( Title $title, $oldId = null ) {
  74                 $this->mOldId = $oldId;
  75                 $this->mPage = $this->newPage( $title );
  76         }
  77
  78         /**
  79          * @param $title Title
  80          * @return WikiPage
  81          */
  82         protected function newPage( Title $title ) {
  83                 return new WikiPage( $title );
  84         }
  85
  86         /**
  87          * Constructor from a page id
  88          * @param $id Int article ID to load
  89          * @return Article|null
  90          */
  91         public static function newFromID( $id ) {
  92                 $t = Title::newFromID( $id );
  93                 # @todo FIXME: Doesn't inherit right
  94                 return $t == null ? null : new self( $t );
  95                 # return $t == null ? null : new static( $t ); // PHP 5.3
  96         }
  97
  98         /**
  99          * Create an Article object of the appropriate class for the given page.
 100          *
 101          * @param $title Title
 102          * @param $context IContextSource
 103          * @return Article object
 104          */
 105         public static function newFromTitle( $title, IContextSource $context ) {
 106                 if ( NS_MEDIA == $title->getNamespace() ) {
 107                         // FIXME: where should this go?
 108                         $title = Title::makeTitle( NS_FILE, $title->getDBkey() );
 109                 }
 110
 111                 $page = null;
 112                 wfRunHooks( 'ArticleFromTitle', array( &$title, &$page ) );
 113                 if ( !$page ) {
 114                         switch( $title->getNamespace() ) {
 115                                 case NS_FILE:
 116                                         $page = new ImagePage( $title ); #FIXME: teach ImagePage to use ContentHandler
 117                                         break;
 118                                 case NS_CATEGORY:
 119                                         $page = new CategoryPage( $title ); #FIXME: teach ImagePage to use ContentHandler
 120                                         break;
 121                                 default:
 122                     $handler = ContentHandler::getForTitle( $title );
 123                                         $page = $handler->createArticle( $title );
 124                         }
 125                 }
 126                 $page->setContext( $context );
 127
 128                 return $page;
 129         }
 130
 131         /**
 132          * Create an Article object of the appropriate class for the given page.
 133          *
 134          * @param $page WikiPage
 135          * @param $context IContextSource
 136          * @return Article object
 137          */
 138         public static function newFromWikiPage( WikiPage $page, IContextSource $context ) {
 139                 $article = self::newFromTitle( $page->getTitle(), $context );
 140                 $article->mPage = $page; // override to keep process cached vars
 141                 return $article;
 142         }
 143
 144         /**
 145          * Tell the page view functions that this view was redirected
 146          * from another page on the wiki.
 147          * @param $from Title object.
 148          */
 149         public function setRedirectedFrom( Title $from ) {
 150                 $this->mRedirectedFrom = $from;
 151         }
 152
 153         /**
 154          * Get the title object of the article
 155          *
 156          * @return Title object of this page
 157          */
 158         public function getTitle() {
 159                 return $this->mPage->getTitle();
 160         }
 161
 162         /**
 163          * Get the WikiPage object of this instance
 164          *
 165          * @since 1.19
 166          * @return WikiPage
 167          */
 168         public function getPage() {
 169                 return $this->mPage;
 170         }
 171
 172         /**
 173          * Clear the object
 174          */
 175         public function clear() {
 176                 $this->mContentLoaded = false;
 177
 178                 $this->mRedirectedFrom = null; # Title object if set
 179                 $this->mRevIdFetched = 0;
 180                 $this->mRedirectUrl = false;
 181
 182                 $this->mPage->clear();
 183         }
 184
 185         /**
 186          * Note that getContent/loadContent do not follow redirects anymore.
 187          * If you need to fetch redirectable content easily, try
 188          * the shortcut in WikiPage::getRedirectTarget()
 189          *
 190          * This function has side effects! Do not use this function if you
 191          * only want the real revision text if any.
 192          *
 193          * @return Return the text of this revision
 194      * @deprecated in 1.20; use getContentObject() instead
 195          */
 196         public function getContent() {
 197         wfDeprecated( __METHOD__, '1.20' );
 198         $content = $this->getContentObject();
 199         return ContentHandler::getContentText( $content );
 200     }
 201
 202     /**
 203      * Note that getContent/loadContent do not follow redirects anymore.
 204      * If you need to fetch redirectable content easily, try
 205      * the shortcut in WikiPage::getRedirectTarget()
 206      *
 207      * This function has side effects! Do not use this function if you
 208      * only want the real revision text if any.
 209      *
 210      * @return Return the content of this revision
 211      */
 212    public function getContentObject() {
 213                 global $wgUser;
 214
 215                 wfProfileIn( __METHOD__ );
 216
 217                 if ( $this->mPage->getID() === 0 ) {
 218                         # If this is a MediaWiki:x message, then load the messages
 219                         # and return the message value for x.
 220                         if ( $this->getTitle()->getNamespace() == NS_MEDIAWIKI ) {
 221                                 $text = $this->getTitle()->getDefaultMessageText();
 222                                 if ( $text === false ) {
 223                                         $text = '';
 224                                 }
 225                         } else {
 226                                 $text = wfMsgExt( $wgUser->isLoggedIn() ? 'noarticletext' : 'noarticletextanon', 'parsemag' );
 227                         }
 228                         wfProfileOut( __METHOD__ );
 229
 230                         return ContentHandler::makeContent( $text, $this->getTitle() );
 231                 } else {
 232                         $this->fetchContentObject();
 233                         wfProfileOut( __METHOD__ );
 234
 235                         return $this->mContentObject;
 236                 }
 237         }
 238
 239         /**
 240          * @return int The oldid of the article that is to be shown, 0 for the
 241          *             current revision
 242          */
 243         public function getOldID() {
 244                 if ( is_null( $this->mOldId ) ) {
 245                         $this->mOldId = $this->getOldIDFromRequest();
 246                 }
 247
 248                 return $this->mOldId;
 249         }
 250
 251         /**
 252          * Sets $this->mRedirectUrl to a correct URL if the query parameters are incorrect
 253          *
 254          * @return int The old id for the request
 255          */
 256         public function getOldIDFromRequest() {
 257                 global $wgRequest;
 258
 259                 $this->mRedirectUrl = false;
 260
 261                 $oldid = $wgRequest->getIntOrNull( 'oldid' );
 262
 263                 if ( $oldid === null ) {
 264                         return 0;
 265                 }
 266
 267                 if ( $oldid !== 0 ) {
 268                         # Load the given revision and check whether the page is another one.
 269                         # In that case, update this instance to reflect the change.
 270                         $this->mRevision = Revision::newFromId( $oldid );
 271                         if ( $this->mRevision !== null ) {
 272                                 // Revision title doesn't match the page title given?
 273                                 if ( $this->mPage->getID() != $this->mRevision->getPage() ) {
 274                                         $function = array( get_class( $this->mPage ), 'newFromID' );
 275                                         $this->mPage = call_user_func( $function, $this->mRevision->getPage() );
 276                                 }
 277                         }
 278                 }
 279
 280                 if ( $wgRequest->getVal( 'direction' ) == 'next' ) {
 281                         $nextid = $this->getTitle()->getNextRevisionID( $oldid );
 282                         if ( $nextid ) {
 283                                 $oldid = $nextid;
 284                                 $this->mRevision = null;
 285                         } else {
 286                                 $this->mRedirectUrl = $this->getTitle()->getFullURL( 'redirect=no' );
 287                         }
 288                 } elseif ( $wgRequest->getVal( 'direction' ) == 'prev' ) {
 289                         $previd = $this->getTitle()->getPreviousRevisionID( $oldid );
 290                         if ( $previd ) {
 291                                 $oldid = $previd;
 292                                 $this->mRevision = null;
 293                         }
 294                 }
 295
 296                 return $oldid;
 297         }
 298
 299         /**
 300          * Load the revision (including text) into this object
 301          *
 302          * @deprecated in 1.19; use fetchContent()
 303          */
 304         function loadContent() {
 305                 wfDeprecated( __METHOD__, '1.19' );
 306                 $this->fetchContent();
 307         }
 308
 309         /**
 310          * Get text of an article from database
 311          * Does *NOT* follow redirects.
 312          *
 313          * @return mixed string containing article contents, or false if null
 314      * @deprecated in 1.20, use getContentObject() instead
 315          */
 316         protected function fetchContent() { #BC cruft!
 317         wfDeprecated( __METHOD__, '1.20' );
 318
 319                 if ( $this->mContentLoaded && $this->mContent ) {
 320                         return $this->mContent;
 321                 }
 322
 323                 wfProfileIn( __METHOD__ );
 324
 325         $content = $this->fetchContentObject();
 326
 327         $this->mContent = ContentHandler::getContentText( $content );
 328                 wfRunHooks( 'ArticleAfterFetchContent', array( &$this, &$this->mContent ) ); #BC cruft!
 329
 330                 wfProfileOut( __METHOD__ );
 331
 332                 return $this->mContent;
 333         }
 334
 335
 336     /**
 337      * Get text content object
 338      * Does *NOT* follow redirects.
 339      *
 340      * @return Content object containing article contents, or null
 341      */
 342     protected function fetchContentObject() {
 343         if ( $this->mContentLoaded ) {
 344             return $this->mContentObject;
 345         }
 346
 347         wfProfileIn( __METHOD__ );
 348
 349         $this->mContentLoaded = true;
 350         $this->mContent = null;
 351
 352         $oldid = $this->getOldID();
 353
 354         # Pre-fill content with error message so that if something
 355         # fails we'll have something telling us what we intended.
 356         $t = $this->getTitle()->getPrefixedText();
 357         $d = $oldid ? wfMsgExt( 'missingarticle-rev', array( 'escape' ), $oldid ) : '';
 358         $this->mContentObject = new MessageContent( 'missing-article', array($t, $d), array() ) ;
 359
 360         if ( $oldid ) {
 361             # $this->mRevision might already be fetched by getOldIDFromRequest()
 362             if ( !$this->mRevision ) {
 363                 $this->mRevision = Revision::newFromId( $oldid );
 364                 if ( !$this->mRevision ) {
 365                     wfDebug( __METHOD__ . " failed to retrieve specified revision, id $oldid\n" );
 366                     wfProfileOut( __METHOD__ );
 367                     return false;
 368                 }
 369             }
 370         } else {
 371             if ( !$this->mPage->getLatest() ) {
 372                 wfDebug( __METHOD__ . " failed to find page data for title " . $this->getTitle()->getPrefixedText() . "\n" );
 373                 wfProfileOut( __METHOD__ );
 374                 return false;
 375             }
 376
 377             $this->mRevision = $this->mPage->getRevision();
 378
 379             if ( !$this->mRevision ) {
 380                 wfDebug( __METHOD__ . " failed to retrieve current page, rev_id " . $this->mPage->getLatest() . "\n" );
 381                 wfProfileOut( __METHOD__ );
 382                 return false;
 383             }
 384         }
 385
 386         // @todo FIXME: Horrible, horrible! This content-loading interface just plain sucks.
 387         // We should instead work with the Revision object when we need it...
 388         $this->mContentObject = $this->mRevision->getContent( Revision::FOR_THIS_USER ); // Loads if user is allowed
 389         $this->mRevIdFetched = $this->mRevision->getId();
 390
 391         wfRunHooks( 'ArticleAfterFetchContentObject', array( &$this, &$this->mContentObject ) ); #FIXME: register new hook
 392
 393         wfProfileOut( __METHOD__ );
 394
 395         return $this->mContentObject;
 396     }
 397
 398         /**
 399          * No-op
 400          * @deprecated since 1.18
 401          */
 402         public function forUpdate() {
 403                 wfDeprecated( __METHOD__, '1.18' );
 404         }
 405
 406         /**
 407          * Returns true if the currently-referenced revision is the current edit
 408          * to this page (and it exists).
 409          * @return bool
 410          */
 411         public function isCurrent() {
 412                 # If no oldid, this is the current version.
 413                 if ( $this->getOldID() == 0 ) {
 414                         return true;
 415                 }
 416
 417                 return $this->mPage->exists() && $this->mRevision && $this->mRevision->isCurrent();
 418         }
 419
 420         /**
 421          * Get the fetched Revision object depending on request parameters or null
 422          * on failure.
 423          *
 424          * @since 1.19
 425          * @return Revision|null
 426          */
 427         public function getRevisionFetched() {
 428                 $this->fetchContentObject();
 429
 430                 return $this->mRevision;
 431         }
 432
 433         /**
 434          * Use this to fetch the rev ID used on page views
 435          *
 436          * @return int revision ID of last article revision
 437          */
 438         public function getRevIdFetched() {
 439                 if ( $this->mRevIdFetched ) {
 440                         return $this->mRevIdFetched;
 441                 } else {
 442                         return $this->mPage->getLatest();
 443                 }
 444         }
 445
 446         /**
 447          * This is the default action of the index.php entry point: just view the
 448          * page of the given title.
 449          */
 450         public function view() {
 451                 global $wgUser, $wgOut, $wgRequest, $wgParser;
 452                 global $wgUseFileCache, $wgUseETag, $wgDebugToolbar;
 453
 454                 wfProfileIn( __METHOD__ );
 455
 456                 # Get variables from query string
 457                 # As side effect this will load the revision and update the title
 458                 # in a revision ID is passed in the request, so this should remain
 459                 # the first call of this method even if $oldid is used way below.
 460                 $oldid = $this->getOldID();
 461
 462                 # Another whitelist check in case getOldID() is altering the title
 463                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'read', $wgUser );
 464                 if ( count( $permErrors ) ) {
 465                         wfDebug( __METHOD__ . ": denied on secondary read check\n" );
 466                         wfProfileOut( __METHOD__ );
 467                         throw new PermissionsError( 'read', $permErrors );
 468                 }
 469
 470                 # getOldID() may as well want us to redirect somewhere else
 471                 if ( $this->mRedirectUrl ) {
 472                         $wgOut->redirect( $this->mRedirectUrl );
 473                         wfDebug( __METHOD__ . ": redirecting due to oldid\n" );
 474                         wfProfileOut( __METHOD__ );
 475
 476                         return;
 477                 }
 478
 479                 # If we got diff in the query, we want to see a diff page instead of the article.
 480                 if ( $wgRequest->getCheck( 'diff' ) ) {
 481                         wfDebug( __METHOD__ . ": showing diff page\n" );
 482                         $this->showDiffPage();
 483                         wfProfileOut( __METHOD__ );
 484
 485                         return;
 486                 }
 487
 488                 # Set page title (may be overridden by DISPLAYTITLE)
 489                 $wgOut->setPageTitle( $this->getTitle()->getPrefixedText() );
 490
 491                 $wgOut->setArticleFlag( true );
 492                 # Allow frames by default
 493                 $wgOut->allowClickjacking();
 494
 495                 $parserCache = ParserCache::singleton();
 496
 497                 $parserOptions = $this->getParserOptions();
 498                 # Render printable version, use printable version cache
 499                 if ( $wgOut->isPrintable() ) {
 500                         $parserOptions->setIsPrintable( true );
 501                         $parserOptions->setEditSection( false );
 502                 } elseif ( !$this->getTitle()->quickUserCan( 'edit' ) ) {
 503                         $parserOptions->setEditSection( false );
 504                 }
 505
 506                 # Try client and file cache
 507                 if ( !$wgDebugToolbar && $oldid === 0 && $this->mPage->checkTouched() ) {
 508                         if ( $wgUseETag ) {
 509                                 $wgOut->setETag( $parserCache->getETag( $this, $parserOptions ) );
 510                         }
 511
 512                         # Is it client cached?
 513                         if ( $wgOut->checkLastModified( $this->mPage->getTouched() ) ) {
 514                                 wfDebug( __METHOD__ . ": done 304\n" );
 515                                 wfProfileOut( __METHOD__ );
 516
 517                                 return;
 518                         # Try file cache
 519                         } elseif ( $wgUseFileCache && $this->tryFileCache() ) {
 520                                 wfDebug( __METHOD__ . ": done file cache\n" );
 521                                 # tell wgOut that output is taken care of
 522                                 $wgOut->disable();
 523                                 $this->mPage->doViewUpdates( $wgUser );
 524                                 wfProfileOut( __METHOD__ );
 525
 526                                 return;
 527                         }
 528                 }
 529
 530                 # Should the parser cache be used?
 531                 $useParserCache = $this->mPage->isParserCacheUsed( $parserOptions, $oldid );
 532                 wfDebug( 'Article::view using parser cache: ' . ( $useParserCache ? 'yes' : 'no' ) . "\n" );
 533                 if ( $wgUser->getStubThreshold() ) {
 534                         wfIncrStats( 'pcache_miss_stub' );
 535                 }
 536
 537                 $this->showRedirectedFromHeader();
 538                 $this->showNamespaceHeader();
 539
 540                 # Iterate through the possible ways of constructing the output text.
 541                 # Keep going until $outputDone is set, or we run out of things to do.
 542                 $pass = 0;
 543                 $outputDone = false;
 544                 $this->mParserOutput = false;
 545
 546                 while ( !$outputDone && ++$pass ) {
 547                         switch( $pass ) {
 548                                 case 1:
 549                                         wfRunHooks( 'ArticleViewHeader', array( &$this, &$outputDone, &$useParserCache ) );
 550                                         break;
 551                                 case 2:
 552                                         # Early abort if the page doesn't exist
 553                                         if ( !$this->mPage->exists() ) {
 554                                                 wfDebug( __METHOD__ . ": showing missing article\n" );
 555                                                 $this->showMissingArticle();
 556                                                 wfProfileOut( __METHOD__ );
 557                                                 return;
 558                                         }
 559
 560                                         # Try the parser cache
 561                                         if ( $useParserCache ) {
 562                                                 $this->mParserOutput = $parserCache->get( $this, $parserOptions );
 563
 564                                                 if ( $this->mParserOutput !== false ) {
 565                                                         if ( $oldid ) {
 566                                                                 wfDebug( __METHOD__ . ": showing parser cache contents for current rev permalink\n" );
 567                                                                 $this->setOldSubtitle( $oldid );
 568                                                         } else {
 569                                                                 wfDebug( __METHOD__ . ": showing parser cache contents\n" );
 570                                                         }
 571                                                         $wgOut->addParserOutput( $this->mParserOutput );
 572                                                         # Ensure that UI elements requiring revision ID have
 573                                                         # the correct version information.
 574                                                         $wgOut->setRevisionId( $this->mPage->getLatest() );
 575                                                         # Preload timestamp to avoid a DB hit
 576                                                         $cachedTimestamp = $this->mParserOutput->getTimestamp();
 577                                                         if ( $cachedTimestamp !== null ) {
 578                                                                 $wgOut->setRevisionTimestamp( $cachedTimestamp );
 579                                                                 $this->mPage->setTimestamp( $cachedTimestamp );
 580                                                         }
 581                                                         $outputDone = true;
 582                                                 }
 583                                         }
 584                                         break;
 585                                 case 3:
 586                                         # This will set $this->mRevision if needed
 587                                         $this->fetchContentObject();
 588
 589                                         # Are we looking at an old revision
 590                                         if ( $oldid && $this->mRevision ) {
 591                                                 $this->setOldSubtitle( $oldid );
 592
 593                                                 if ( !$this->showDeletedRevisionHeader() ) {
 594                                                         wfDebug( __METHOD__ . ": cannot view deleted revision\n" );
 595                                                         wfProfileOut( __METHOD__ );
 596                                                         return;
 597                                                 }
 598                                         }
 599
 600                                         # Ensure that UI elements requiring revision ID have
 601                                         # the correct version information.
 602                                         $wgOut->setRevisionId( $this->getRevIdFetched() );
 603                                         # Preload timestamp to avoid a DB hit
 604                                         $wgOut->setRevisionTimestamp( $this->getTimestamp() );
 605
 606                                         # Pages containing custom CSS or JavaScript get special treatment
 607                                         if ( $this->getTitle()->isCssOrJsPage() || $this->getTitle()->isCssJsSubpage() ) {
 608                         #FIXME: use ContentHandler for specialized actions insetad.
 609                                                 wfDebug( __METHOD__ . ": showing CSS/JS source\n" );
 610                                                 $this->showCssOrJsPage();
 611                                                 $outputDone = true;
 612                                         } elseif( !wfRunHooks( 'ArticleViewCustom', array( $this->mContent, $this->getTitle(), $wgOut ) ) ) {
 613                                                 # Allow extensions do their own custom view for certain pages
 614                                                 $outputDone = true;
 615                                         } else {
 616                                                 $content = $this->getContentObject();
 617                                                 $rt = $content->getRedirectChain();
 618                                                 if ( $rt ) {
 619                                                         wfDebug( __METHOD__ . ": showing redirect=no page\n" );
 620                                                         # Viewing a redirect page (e.g. with parameter redirect=no)
 621                                                         $wgOut->addHTML( $this->viewRedirect( $rt ) );
 622                                                         # Parse just to get categories, displaytitle, etc.
 623                                                         $this->mParserOutput = $content->getParserOutput( $this->getTitle(), $oldid, $parserOptions );
 624                                                         $wgOut->addParserOutputNoText( $this->mParserOutput );
 625                                                         $outputDone = true;
 626                                                 }
 627                                         }
 628                                         break;
 629                                 case 4:
 630                                         # Run the parse, protected by a pool counter
 631                                         wfDebug( __METHOD__ . ": doing uncached parse\n" );
 632
 633                                         $poolArticleView = new PoolWorkArticleView( $this, $parserOptions,
 634                                                 $this->getRevIdFetched(), $useParserCache, $this->getContentObject() );
 635
 636                                         if ( !$poolArticleView->execute() ) {
 637                                                 $error = $poolArticleView->getError();
 638                                                 if ( $error ) {
 639                                                         $wgOut->clearHTML(); // for release() errors
 640                                                         $wgOut->enableClientCache( false );
 641                                                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 642
 643                                                         $errortext = $error->getWikiText( false, 'view-pool-error' );
 644                                                         $wgOut->addWikiText( '<div class="errorbox">' . $errortext . '</div>' );
 645                                                 }
 646                                                 # Connection or timeout error
 647                                                 wfProfileOut( __METHOD__ );
 648                                                 return;
 649                                         }
 650
 651                                         $this->mParserOutput = $poolArticleView->getParserOutput();
 652                                         $wgOut->addParserOutput( $this->mParserOutput );
 653
 654                                         # Don't cache a dirty ParserOutput object
 655                                         if ( $poolArticleView->getIsDirty() ) {
 656                                                 $wgOut->setSquidMaxage( 0 );
 657                                                 $wgOut->addHTML( "<!-- parser cache is expired, sending anyway due to pool overload-->\n" );
 658                                         }
 659
 660                                         $outputDone = true;
 661                                         break;
 662                                 # Should be unreachable, but just in case...
 663                                 default:
 664                                         break 2;
 665                         }
 666                 }
 667
 668                 # Get the ParserOutput actually *displayed* here.
 669                 # Note that $this->mParserOutput is the *current* version output.
 670                 $pOutput = ( $outputDone instanceof ParserOutput )
 671                         ? $outputDone // object fetched by hook
 672                         : $this->mParserOutput;
 673
 674                 # Adjust title for main page & pages with displaytitle
 675                 if ( $pOutput ) {
 676                         $this->adjustDisplayTitle( $pOutput );
 677                 }
 678
 679                 # For the main page, overwrite the <title> element with the con-
 680                 # tents of 'pagetitle-view-mainpage' instead of the default (if
 681                 # that's not empty).
 682                 # This message always exists because it is in the i18n files
 683                 if ( $this->getTitle()->isMainPage() ) {
 684                         $msg = wfMessage( 'pagetitle-view-mainpage' )->inContentLanguage();
 685                         if ( !$msg->isDisabled() ) {
 686                                 $wgOut->setHTMLTitle( $msg->title( $this->getTitle() )->text() );
 687                         }
 688                 }
 689
 690                 # Check for any __NOINDEX__ tags on the page using $pOutput
 691                 $policy = $this->getRobotPolicy( 'view', $pOutput );
 692                 $wgOut->setIndexPolicy( $policy['index'] );
 693                 $wgOut->setFollowPolicy( $policy['follow'] );
 694
 695                 $this->showViewFooter();
 696                 $this->mPage->doViewUpdates( $wgUser );
 697
 698                 wfProfileOut( __METHOD__ );
 699         }
 700
 701         /**
 702          * Adjust title for pages with displaytitle, -{T|}- or language conversion
 703          * @param $pOutput ParserOutput
 704          */
 705         public function adjustDisplayTitle( ParserOutput $pOutput ) {
 706                 global $wgOut;
 707                 # Adjust the title if it was set by displaytitle, -{T|}- or language conversion
 708                 $titleText = $pOutput->getTitleText();
 709                 if ( strval( $titleText ) !== '' ) {
 710                         $wgOut->setPageTitle( $titleText );
 711                 }
 712         }
 713
 714         /**
 715          * Show a diff page according to current request variables. For use within
 716          * Article::view() only, other callers should use the DifferenceEngine class.
 717          */
 718         public function showDiffPage() {
 719                 global $wgRequest, $wgUser;
 720
 721                 $diff = $wgRequest->getVal( 'diff' );
 722                 $rcid = $wgRequest->getVal( 'rcid' );
 723                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
 724                 $purge = $wgRequest->getVal( 'action' ) == 'purge';
 725                 $unhide = $wgRequest->getInt( 'unhide' ) == 1;
 726                 $oldid = $this->getOldID();
 727
 728         $contentHandler = ContentHandler::getForTitle( $this->getTitle() );
 729                 $de = $contentHandler->getDifferenceEngine( $this->getContext(), $oldid, $diff, $rcid, $purge, $unhide );
 730
 731                 // DifferenceEngine directly fetched the revision:
 732                 $this->mRevIdFetched = $de->mNewid;
 733                 $de->showDiffPage( $diffOnly );
 734
 735                 if ( $diff == 0 || $diff == $this->mPage->getLatest() ) {
 736                         # Run view updates for current revision only
 737                         $this->mPage->doViewUpdates( $wgUser );
 738                 }
 739         }
 740
 741         /**
 742          * Show a page view for a page formatted as CSS or JavaScript. To be called by
 743          * Article::view() only.
 744          *
 745          * This is hooked by SyntaxHighlight_GeSHi to do syntax highlighting of these
 746          * page views.
 747          */
 748         protected function showCssOrJsPage() { #FIXME: move this to ContentHandler!
 749                 global $wgOut;
 750
 751                 $dir = $this->getContext()->getLanguage()->getDir();
 752                 $lang = $this->getContext()->getLanguage()->getCode();
 753
 754                 $wgOut->wrapWikiMsg( "<div id='mw-clearyourcache' lang='$lang' dir='$dir' class='mw-content-$dir'>\n$1\n</div>",
 755                         'clearyourcache' ); #FIXME: do this in handler
 756
 757                 // Give hooks a chance to customise the output
 758                 if ( wfRunHooks( 'ShowRawCssJs', array( $this->mContent, $this->getTitle(), $wgOut ) ) ) {
 759             $po = $this->mContentObject->getParserOutput();
 760                         $wgOut->addHTML( $po->getText() );
 761                 }
 762         }
 763
 764         /**
 765          * Get the robot policy to be used for the current view
 766          * @param $action String the action= GET parameter
 767          * @param $pOutput ParserOutput
 768          * @return Array the policy that should be set
 769          * TODO: actions other than 'view'
 770          */
 771         public function getRobotPolicy( $action, $pOutput ) {
 772                 global $wgOut, $wgArticleRobotPolicies, $wgNamespaceRobotPolicies;
 773                 global $wgDefaultRobotPolicy, $wgRequest;
 774
 775                 $ns = $this->getTitle()->getNamespace();
 776
 777                 if ( $ns == NS_USER || $ns == NS_USER_TALK ) {
 778                         # Don't index user and user talk pages for blocked users (bug 11443)
 779                         if ( !$this->getTitle()->isSubpage() ) {
 780                                 if ( Block::newFromTarget( null, $this->getTitle()->getText() ) instanceof Block ) {
 781                                         return array(
 782                                                 'index'  => 'noindex',
 783                                                 'follow' => 'nofollow'
 784                                         );
 785                                 }
 786                         }
 787                 }
 788
 789                 if ( $this->mPage->getID() === 0 || $this->getOldID() ) {
 790                         # Non-articles (special pages etc), and old revisions
 791                         return array(
 792                                 'index'  => 'noindex',
 793                                 'follow' => 'nofollow'
 794                         );
 795                 } elseif ( $wgOut->isPrintable() ) {
 796                         # Discourage indexing of printable versions, but encourage following
 797                         return array(
 798                                 'index'  => 'noindex',
 799                                 'follow' => 'follow'
 800                         );
 801                 } elseif ( $wgRequest->getInt( 'curid' ) ) {
 802                         # For ?curid=x urls, disallow indexing
 803                         return array(
 804                                 'index'  => 'noindex',
 805                                 'follow' => 'follow'
 806                         );
 807                 }
 808
 809                 # Otherwise, construct the policy based on the various config variables.
 810                 $policy = self::formatRobotPolicy( $wgDefaultRobotPolicy );
 811
 812                 if ( isset( $wgNamespaceRobotPolicies[$ns] ) ) {
 813                         # Honour customised robot policies for this namespace
 814                         $policy = array_merge(
 815                                 $policy,
 816                                 self::formatRobotPolicy( $wgNamespaceRobotPolicies[$ns] )
 817                         );
 818                 }
 819                 if ( $this->getTitle()->canUseNoindex() && is_object( $pOutput ) && $pOutput->getIndexPolicy() ) {
 820                         # __INDEX__ and __NOINDEX__ magic words, if allowed. Incorporates
 821                         # a final sanity check that we have really got the parser output.
 822                         $policy = array_merge(
 823                                 $policy,
 824                                 array( 'index' => $pOutput->getIndexPolicy() )
 825                         );
 826                 }
 827
 828                 if ( isset( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] ) ) {
 829                         # (bug 14900) site config can override user-defined __INDEX__ or __NOINDEX__
 830                         $policy = array_merge(
 831                                 $policy,
 832                                 self::formatRobotPolicy( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] )
 833                         );
 834                 }
 835
 836                 return $policy;
 837         }
 838
 839         /**
 840          * Converts a String robot policy into an associative array, to allow
 841          * merging of several policies using array_merge().
 842          * @param $policy Mixed, returns empty array on null/false/'', transparent
 843          *            to already-converted arrays, converts String.
 844          * @return Array: 'index' => <indexpolicy>, 'follow' => <followpolicy>
 845          */
 846         public static function formatRobotPolicy( $policy ) {
 847                 if ( is_array( $policy ) ) {
 848                         return $policy;
 849                 } elseif ( !$policy ) {
 850                         return array();
 851                 }
 852
 853                 $policy = explode( ',', $policy );
 854                 $policy = array_map( 'trim', $policy );
 855
 856                 $arr = array();
 857                 foreach ( $policy as $var ) {
 858                         if ( in_array( $var, array( 'index', 'noindex' ) ) ) {
 859                                 $arr['index'] = $var;
 860                         } elseif ( in_array( $var, array( 'follow', 'nofollow' ) ) ) {
 861                                 $arr['follow'] = $var;
 862                         }
 863                 }
 864
 865                 return $arr;
 866         }
 867
 868         /**
 869          * If this request is a redirect view, send "redirected from" subtitle to
 870          * $wgOut. Returns true if the header was needed, false if this is not a
 871          * redirect view. Handles both local and remote redirects.
 872          *
 873          * @return boolean
 874          */
 875         public function showRedirectedFromHeader() {
 876                 global $wgOut, $wgRequest, $wgRedirectSources;
 877
 878                 $rdfrom = $wgRequest->getVal( 'rdfrom' );
 879
 880                 if ( isset( $this->mRedirectedFrom ) ) {
 881                         // This is an internally redirected page view.
 882                         // We'll need a backlink to the source page for navigation.
 883                         if ( wfRunHooks( 'ArticleViewRedirect', array( &$this ) ) ) {
 884                                 $redir = Linker::linkKnown(
 885                                         $this->mRedirectedFrom,
 886                                         null,
 887                                         array(),
 888                                         array( 'redirect' => 'no' )
 889                                 );
 890
 891                                 $wgOut->addSubtitle( wfMessage( 'redirectedfrom' )->rawParams( $redir ) );
 892
 893                                 // Set the fragment if one was specified in the redirect
 894                                 if ( strval( $this->getTitle()->getFragment() ) != '' ) {
 895                                         $fragment = Xml::escapeJsString( $this->getTitle()->getFragmentForURL() );
 896                                         $wgOut->addInlineScript( "redirectToFragment(\"$fragment\");" );
 897                                 }
 898
 899                                 // Add a <link rel="canonical"> tag
 900                                 $wgOut->addLink( array( 'rel' => 'canonical',
 901                                         'href' => $this->getTitle()->getLocalURL() )
 902                                 );
 903
 904                                 // Tell $wgOut the user arrived at this article through a redirect
 905                                 $wgOut->setRedirectedFrom( $this->mRedirectedFrom );
 906
 907                                 return true;
 908                         }
 909                 } elseif ( $rdfrom ) {
 910                         // This is an externally redirected view, from some other wiki.
 911                         // If it was reported from a trusted site, supply a backlink.
 912                         if ( $wgRedirectSources && preg_match( $wgRedirectSources, $rdfrom ) ) {
 913                                 $redir = Linker::makeExternalLink( $rdfrom, $rdfrom );
 914                                 $wgOut->addSubtitle( wfMessage( 'redirectedfrom' )->rawParams( $redir ) );
 915
 916                                 return true;
 917                         }
 918                 }
 919
 920                 return false;
 921         }
 922
 923         /**
 924          * Show a header specific to the namespace currently being viewed, like
 925          * [[MediaWiki:Talkpagetext]]. For Article::view().
 926          */
 927         public function showNamespaceHeader() {
 928                 global $wgOut;
 929
 930                 if ( $this->getTitle()->isTalkPage() ) {
 931                         if ( !wfMessage( 'talkpageheader' )->isDisabled() ) {
 932                                 $wgOut->wrapWikiMsg( "<div class=\"mw-talkpageheader\">\n$1\n</div>", array( 'talkpageheader' ) );
 933                         }
 934                 }
 935         }
 936
 937         /**
 938          * Show the footer section of an ordinary page view
 939          */
 940         public function showViewFooter() {
 941                 global $wgOut;
 942
 943                 # check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
 944                 if ( $this->getTitle()->getNamespace() == NS_USER_TALK && IP::isValid( $this->getTitle()->getText() ) ) {
 945                         $wgOut->addWikiMsg( 'anontalkpagetext' );
 946                 }
 947
 948                 # If we have been passed an &rcid= parameter, we want to give the user a
 949                 # chance to mark this new article as patrolled.
 950                 $this->showPatrolFooter();
 951
 952                 wfRunHooks( 'ArticleViewFooter', array( $this ) );
 953
 954         }
 955
 956         /**
 957          * If patrol is possible, output a patrol UI box. This is called from the
 958          * footer section of ordinary page views. If patrol is not possible or not
 959          * desired, does nothing.
 960          */
 961         public function showPatrolFooter() {
 962                 global $wgOut, $wgRequest, $wgUser;
 963
 964                 $rcid = $wgRequest->getVal( 'rcid' );
 965
 966                 if ( !$rcid || !$this->getTitle()->quickUserCan( 'patrol' ) ) {
 967                         return;
 968                 }
 969
 970                 $token = $wgUser->getEditToken( $rcid );
 971                 $wgOut->preventClickjacking();
 972
 973                 $wgOut->addHTML(
 974                         "<div class='patrollink'>" .
 975                                 wfMsgHtml(
 976                                         'markaspatrolledlink',
 977                                         Linker::link(
 978                                                 $this->getTitle(),
 979                                                 wfMsgHtml( 'markaspatrolledtext' ),
 980                                                 array(),
 981                                                 array(
 982                                                         'action' => 'markpatrolled',
 983                                                         'rcid' => $rcid,
 984                                                         'token' => $token,
 985                                                 ),
 986                                                 array( 'known', 'noclasses' )
 987                                         )
 988                                 ) .
 989                         '</div>'
 990                 );
 991         }
 992
 993         /**
 994          * Show the error text for a missing article. For articles in the MediaWiki
 995          * namespace, show the default message text. To be called from Article::view().
 996          */
 997         public function showMissingArticle() {
 998                 global $wgOut, $wgRequest, $wgUser, $wgSend404Code;
 999
1000                 # Show info in user (talk) namespace. Does the user exist? Is he blocked?
1001                 if ( $this->getTitle()->getNamespace() == NS_USER || $this->getTitle()->getNamespace() == NS_USER_TALK ) {
1002                         $parts = explode( '/', $this->getTitle()->getText() );
1003                         $rootPart = $parts[0];
1004                         $user = User::newFromName( $rootPart, false /* allow IP users*/ );
1005                         $ip = User::isIP( $rootPart );
1006
1007                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1008                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n\$1\n</div>",
1009                                         array( 'userpage-userdoesnotexist-view', wfEscapeWikiText( $rootPart ) ) );
1010                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1011                                 LogEventsList::showLogExtract(
1012                                         $wgOut,
1013                                         'block',
1014                                         $user->getUserPage()->getPrefixedText(),
1015                                         '',
1016                                         array(
1017                                                 'lim' => 1,
1018                                                 'showIfEmpty' => false,
1019                                                 'msgKey' => array(
1020                                                         'blocked-notice-logextract',
1021                                                         $user->getName() # Support GENDER in notice
1022                                                 )
1023                                         )
1024                                 );
1025                         }
1026                 }
1027
1028                 wfRunHooks( 'ShowMissingArticle', array( $this ) );
1029
1030                 # Show delete and move logs
1031                 LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->getTitle()->getPrefixedText(), '',
1032                         array(  'lim' => 10,
1033                                 'conds' => array( "log_action != 'revision'" ),
1034                                 'showIfEmpty' => false,
1035                                 'msgKey' => array( 'moveddeleted-notice' ) )
1036                 );
1037
1038                 # Show error message
1039                 $oldid = $this->getOldID();
1040                 if ( $oldid ) {
1041                         $text = wfMsgNoTrans( 'missing-article',
1042                                 $this->getTitle()->getPrefixedText(),
1043                                 wfMsgNoTrans( 'missingarticle-rev', $oldid ) );
1044                 } elseif ( $this->getTitle()->getNamespace() === NS_MEDIAWIKI ) {
1045                         // Use the default message text
1046                         $text = $this->getTitle()->getDefaultMessageText();
1047                 } else {
1048                         $createErrors = $this->getTitle()->getUserPermissionsErrors( 'create', $wgUser );
1049                         $editErrors = $this->getTitle()->getUserPermissionsErrors( 'edit', $wgUser );
1050                         $errors = array_merge( $createErrors, $editErrors );
1051
1052                         if ( !count( $errors ) ) {
1053                                 $text = wfMsgNoTrans( 'noarticletext' );
1054                         } else {
1055                                 $text = wfMsgNoTrans( 'noarticletext-nopermission' );
1056                         }
1057                 }
1058                 $text = "<div class='noarticletext'>\n$text\n</div>";
1059
1060                 if ( !$this->mPage->hasViewableContent() && $wgSend404Code ) {
1061                         // If there's no backing content, send a 404 Not Found
1062                         // for better machine handling of broken links.
1063                         $wgRequest->response()->header( "HTTP/1.1 404 Not Found" );
1064                 }
1065
1066                 $wgOut->addWikiText( $text );
1067         }
1068
1069         /**
1070          * If the revision requested for view is deleted, check permissions.
1071          * Send either an error message or a warning header to $wgOut.
1072          *
1073          * @return boolean true if the view is allowed, false if not.
1074          */
1075         public function showDeletedRevisionHeader() {
1076                 global $wgOut, $wgRequest;
1077
1078                 if ( !$this->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1079                         // Not deleted
1080                         return true;
1081                 }
1082
1083                 // If the user is not allowed to see it...
1084                 if ( !$this->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1085                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1086                                 'rev-deleted-text-permission' );
1087
1088                         return false;
1089                 // If the user needs to confirm that they want to see it...
1090                 } elseif ( $wgRequest->getInt( 'unhide' ) != 1 ) {
1091                         # Give explanation and add a link to view the revision...
1092                         $oldid = intval( $this->getOldID() );
1093                         $link = $this->getTitle()->getFullUrl( "oldid={$oldid}&unhide=1" );
1094                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1095                                 'rev-suppressed-text-unhide' : 'rev-deleted-text-unhide';
1096                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1097                                 array( $msg, $link ) );
1098
1099                         return false;
1100                 // We are allowed to see...
1101                 } else {
1102                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1103                                 'rev-suppressed-text-view' : 'rev-deleted-text-view';
1104                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", $msg );
1105
1106                         return true;
1107                 }
1108         }
1109
1110         /**
1111          * Generate the navigation links when browsing through an article revisions
1112          * It shows the information as:
1113          *   Revision as of \<date\>; view current revision
1114          *   \<- Previous version | Next Version -\>
1115          *
1116          * @param $oldid String: revision ID of this article revision
1117          */
1118         public function setOldSubtitle( $oldid = 0 ) {
1119                 global $wgLang, $wgOut, $wgUser, $wgRequest;
1120
1121                 if ( !wfRunHooks( 'DisplayOldSubtitle', array( &$this, &$oldid ) ) ) {
1122                         return;
1123                 }
1124
1125                 $unhide = $wgRequest->getInt( 'unhide' ) == 1;
1126
1127                 # Cascade unhide param in links for easy deletion browsing
1128                 $extraParams = array();
1129                 if ( $wgRequest->getVal( 'unhide' ) ) {
1130                         $extraParams['unhide'] = 1;
1131                 }
1132
1133                 $revision = Revision::newFromId( $oldid );
1134                 $timestamp = $revision->getTimestamp();
1135
1136                 $current = ( $oldid == $this->mPage->getLatest() );
1137                 $td = $wgLang->timeanddate( $timestamp, true );
1138                 $tddate = $wgLang->date( $timestamp, true );
1139                 $tdtime = $wgLang->time( $timestamp, true );
1140
1141                 # Show user links if allowed to see them. If hidden, then show them only if requested...
1142                 $userlinks = Linker::revUserTools( $revision, !$unhide );
1143
1144                 $infomsg = $current && !wfMessage( 'revision-info-current' )->isDisabled()
1145                         ? 'revision-info-current'
1146                         : 'revision-info';
1147
1148                 $wgOut->addSubtitle( "<div id=\"mw-{$infomsg}\">" . wfMessage( $infomsg,
1149                         $td )->rawParams( $userlinks )->params( $revision->getID(), $tddate,
1150                         $tdtime, $revision->getUser() )->parse() . "</div>" );
1151
1152                 $lnk = $current
1153                         ? wfMsgHtml( 'currentrevisionlink' )
1154                         : Linker::link(
1155                                 $this->getTitle(),
1156                                 wfMsgHtml( 'currentrevisionlink' ),
1157                                 array(),
1158                                 $extraParams,
1159                                 array( 'known', 'noclasses' )
1160                         );
1161                 $curdiff = $current
1162                         ? wfMsgHtml( 'diff' )
1163                         : Linker::link(
1164                                 $this->getTitle(),
1165                                 wfMsgHtml( 'diff' ),
1166                                 array(),
1167                                 array(
1168                                         'diff' => 'cur',
1169                                         'oldid' => $oldid
1170                                 ) + $extraParams,
1171                                 array( 'known', 'noclasses' )
1172                         );
1173                 $prev = $this->getTitle()->getPreviousRevisionID( $oldid ) ;
1174                 $prevlink = $prev
1175                         ? Linker::link(
1176                                 $this->getTitle(),
1177                                 wfMsgHtml( 'previousrevision' ),
1178                                 array(),
1179                                 array(
1180                                         'direction' => 'prev',
1181                                         'oldid' => $oldid
1182                                 ) + $extraParams,
1183                                 array( 'known', 'noclasses' )
1184                         )
1185                         : wfMsgHtml( 'previousrevision' );
1186                 $prevdiff = $prev
1187                         ? Linker::link(
1188                                 $this->getTitle(),
1189                                 wfMsgHtml( 'diff' ),
1190                                 array(),
1191                                 array(
1192                                         'diff' => 'prev',
1193                                         'oldid' => $oldid
1194                                 ) + $extraParams,
1195                                 array( 'known', 'noclasses' )
1196                         )
1197                         : wfMsgHtml( 'diff' );
1198                 $nextlink = $current
1199                         ? wfMsgHtml( 'nextrevision' )
1200                         : Linker::link(
1201                                 $this->getTitle(),
1202                                 wfMsgHtml( 'nextrevision' ),
1203                                 array(),
1204                                 array(
1205                                         'direction' => 'next',
1206                                         'oldid' => $oldid
1207                                 ) + $extraParams,
1208                                 array( 'known', 'noclasses' )
1209                         );
1210                 $nextdiff = $current
1211                         ? wfMsgHtml( 'diff' )
1212                         : Linker::link(
1213                                 $this->getTitle(),
1214                                 wfMsgHtml( 'diff' ),
1215                                 array(),
1216                                 array(
1217                                         'diff' => 'next',
1218                                         'oldid' => $oldid
1219                                 ) + $extraParams,
1220                                 array( 'known', 'noclasses' )
1221                         );
1222
1223                 $cdel = Linker::getRevDeleteLink( $wgUser, $revision, $this->getTitle() );
1224                 if ( $cdel !== '' ) {
1225                         $cdel .= ' ';
1226                 }
1227
1228                 $wgOut->addSubtitle( "<div id=\"mw-revision-nav\">" . $cdel .
1229                         wfMsgExt( 'revision-nav', array( 'escapenoentities', 'parsemag', 'replaceafter' ),
1230                         $prevdiff, $prevlink, $lnk, $curdiff, $nextlink, $nextdiff ) . "</div>" );
1231         }
1232
1233         /**
1234          * View redirect
1235          *
1236          * @param $target Title|Array of destination(s) to redirect
1237          * @param $appendSubtitle Boolean [optional]
1238          * @param $forceKnown Boolean: should the image be shown as a bluelink regardless of existence?
1239          * @return string containing HMTL with redirect link
1240          */
1241         public function viewRedirect( $target, $appendSubtitle = true, $forceKnown = false ) {
1242                 global $wgOut, $wgStylePath;
1243
1244                 if ( !is_array( $target ) ) {
1245                         $target = array( $target );
1246                 }
1247
1248                 $lang = $this->getTitle()->getPageLanguage();
1249                 $imageDir = $lang->getDir();
1250
1251                 if ( $appendSubtitle ) {
1252                         $wgOut->appendSubtitle( wfMsgHtml( 'redirectpagesub' ) );
1253                 }
1254
1255                 // the loop prepends the arrow image before the link, so the first case needs to be outside
1256
1257                 /**
1258                  * @var $title Title
1259                  */
1260                 $title = array_shift( $target );
1261
1262                 if ( $forceKnown ) {
1263                         $link = Linker::linkKnown( $title, htmlspecialchars( $title->getFullText() ) );
1264                 } else {
1265                         $link = Linker::link( $title, htmlspecialchars( $title->getFullText() ) );
1266                 }
1267
1268                 $nextRedirect = $wgStylePath . '/common/images/nextredirect' . $imageDir . '.png';
1269                 $alt = $lang->isRTL() ? '←' : '→';
1270                 // Automatically append redirect=no to each link, since most of them are redirect pages themselves.
1271                 foreach ( $target as $rt ) {
1272                         $link .= Html::element( 'img', array( 'src' => $nextRedirect, 'alt' => $alt ) );
1273                         if ( $forceKnown ) {
1274                                 $link .= Linker::linkKnown( $rt, htmlspecialchars( $rt->getFullText(), array(), array( 'redirect' => 'no' ) ) );
1275                         } else {
1276                                 $link .= Linker::link( $rt, htmlspecialchars( $rt->getFullText() ), array(), array( 'redirect' => 'no' ) );
1277                         }
1278                 }
1279
1280                 $imageUrl = $wgStylePath . '/common/images/redirect' . $imageDir . '.png';
1281                 return '<div class="redirectMsg">' .
1282                         Html::element( 'img', array( 'src' => $imageUrl, 'alt' => '#REDIRECT' ) ) .
1283                         '<span class="redirectText">' . $link . '</span></div>';
1284         }
1285
1286         /**
1287          * Handle action=render
1288          */
1289         public function render() {
1290                 global $wgOut;
1291
1292                 $wgOut->setArticleBodyOnly( true );
1293                 $this->view();
1294         }
1295
1296         /**
1297          * action=protect handler
1298          */
1299         public function protect() {
1300                 $form = new ProtectionForm( $this );
1301                 $form->execute();
1302         }
1303
1304         /**
1305          * action=unprotect handler (alias)
1306          */
1307         public function unprotect() {
1308                 $this->protect();
1309         }
1310
1311         /**
1312          * UI entry point for page deletion
1313          */
1314         public function delete() {
1315                 global $wgOut, $wgRequest, $wgLang;
1316
1317                 # This code desperately needs to be totally rewritten
1318
1319                 $title = $this->getTitle();
1320                 $user = $this->getContext()->getUser();
1321
1322                 # Check permissions
1323                 $permission_errors = $title->getUserPermissionsErrors( 'delete', $user );
1324                 if ( count( $permission_errors ) ) {
1325                         throw new PermissionsError( 'delete', $permission_errors );
1326                 }
1327
1328                 # Read-only check...
1329                 if ( wfReadOnly() ) {
1330                         throw new ReadOnlyError;
1331                 }
1332
1333                 # Better double-check that it hasn't been deleted yet!
1334                 $dbw = wfGetDB( DB_MASTER );
1335                 $conds = $title->pageCond();
1336                 $latest = $dbw->selectField( 'page', 'page_latest', $conds, __METHOD__ );
1337                 if ( $latest === false ) {
1338                         $wgOut->setPageTitle( wfMessage( 'cannotdelete-title', $title->getPrefixedText() ) );
1339                         $wgOut->wrapWikiMsg( "<div class=\"error mw-error-cannotdelete\">\n$1\n</div>",
1340                                         array( 'cannotdelete', wfEscapeWikiText( $title->getPrefixedText() ) )
1341                                 );
1342                         $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1343                         LogEventsList::showLogExtract(
1344                                 $wgOut,
1345                                 'delete',
1346                                 $title->getPrefixedText()
1347                         );
1348
1349                         return;
1350                 }
1351
1352                 $deleteReasonList = $wgRequest->getText( 'wpDeleteReasonList', 'other' );
1353                 $deleteReason = $wgRequest->getText( 'wpReason' );
1354
1355                 if ( $deleteReasonList == 'other' ) {
1356                         $reason = $deleteReason;
1357                 } elseif ( $deleteReason != '' ) {
1358                         // Entry from drop down menu + additional comment
1359                         $reason = $deleteReasonList . wfMsgForContent( 'colon-separator' ) . $deleteReason;
1360                 } else {
1361                         $reason = $deleteReasonList;
1362                 }
1363
1364                 if ( $wgRequest->wasPosted() && $user->matchEditToken( $wgRequest->getVal( 'wpEditToken' ),
1365                         array( 'delete', $this->getTitle()->getPrefixedText() ) ) )
1366                 {
1367                         # Flag to hide all contents of the archived revisions
1368                         $suppress = $wgRequest->getVal( 'wpSuppress' ) && $user->isAllowed( 'suppressrevision' );
1369
1370                         $this->doDelete( $reason, $suppress );
1371
1372                         if ( $wgRequest->getCheck( 'wpWatch' ) && $user->isLoggedIn() ) {
1373                                 $this->doWatch();
1374                         } elseif ( $title->userIsWatching() ) {
1375                                 $this->doUnwatch();
1376                         }
1377
1378                         return;
1379                 }
1380
1381                 // Generate deletion reason
1382                 $hasHistory = false;
1383                 if ( !$reason ) {
1384                         $reason = $this->generateReason( $hasHistory );
1385                 }
1386
1387                 // If the page has a history, insert a warning
1388                 if ( $hasHistory ) {
1389                         $revisions = $this->mTitle->estimateRevisionCount();
1390                         // @todo FIXME: i18n issue/patchwork message
1391                         $wgOut->addHTML( '<strong class="mw-delete-warning-revisions">' .
1392                                 wfMsgExt( 'historywarning', array( 'parseinline' ), $wgLang->formatNum( $revisions ) ) .
1393                                 wfMsgHtml( 'word-separator' ) . Linker::link( $title,
1394                                         wfMsgHtml( 'history' ),
1395                                         array( 'rel' => 'archives' ),
1396                                         array( 'action' => 'history' ) ) .
1397                                 '</strong>'
1398                         );
1399
1400                         if ( $this->mTitle->isBigDeletion() ) {
1401                                 global $wgDeleteRevisionsLimit;
1402                                 $wgOut->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n",
1403                                         array( 'delete-warning-toobig', $wgLang->formatNum( $wgDeleteRevisionsLimit ) ) );
1404                         }
1405                 }
1406
1407                 return $this->confirmDelete( $reason );
1408         }
1409
1410         /**
1411          * Output deletion confirmation dialog
1412          * @todo FIXME: Move to another file?
1413          * @param $reason String: prefilled reason
1414          */
1415         public function confirmDelete( $reason ) {
1416                 global $wgOut;
1417
1418                 wfDebug( "Article::confirmDelete\n" );
1419
1420                 $wgOut->setPageTitle( wfMessage( 'delete-confirm', $this->getTitle()->getPrefixedText() ) );
1421                 $wgOut->addBacklinkSubtitle( $this->getTitle() );
1422                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1423                 $wgOut->addWikiMsg( 'confirmdeletetext' );
1424
1425                 wfRunHooks( 'ArticleConfirmDelete', array( $this, $wgOut, &$reason ) );
1426
1427                 $user = $this->getContext()->getUser();
1428
1429                 if ( $user->isAllowed( 'suppressrevision' ) ) {
1430                         $suppress = "<tr id=\"wpDeleteSuppressRow\">
1431                                         <td></td>
1432                                         <td class='mw-input'><strong>" .
1433                                                 Xml::checkLabel( wfMsg( 'revdelete-suppress' ),
1434                                                         'wpSuppress', 'wpSuppress', false, array( 'tabindex' => '4' ) ) .
1435                                         "</strong></td>
1436                                 </tr>";
1437                 } else {
1438                         $suppress = '';
1439                 }
1440                 $checkWatch = $user->getBoolOption( 'watchdeletion' ) || $this->getTitle()->userIsWatching();
1441
1442                 $form = Xml::openElement( 'form', array( 'method' => 'post',
1443                         'action' => $this->getTitle()->getLocalURL( 'action=delete' ), 'id' => 'deleteconfirm' ) ) .
1444                         Xml::openElement( 'fieldset', array( 'id' => 'mw-delete-table' ) ) .
1445                         Xml::tags( 'legend', null, wfMsgExt( 'delete-legend', array( 'parsemag', 'escapenoentities' ) ) ) .
1446                         Xml::openElement( 'table', array( 'id' => 'mw-deleteconfirm-table' ) ) .
1447                         "<tr id=\"wpDeleteReasonListRow\">
1448                                 <td class='mw-label'>" .
1449                                         Xml::label( wfMsg( 'deletecomment' ), 'wpDeleteReasonList' ) .
1450                                 "</td>
1451                                 <td class='mw-input'>" .
1452                                         Xml::listDropDown( 'wpDeleteReasonList',
1453                                                 wfMsgForContent( 'deletereason-dropdown' ),
1454                                                 wfMsgForContent( 'deletereasonotherlist' ), '', 'wpReasonDropDown', 1 ) .
1455                                 "</td>
1456                         </tr>
1457                         <tr id=\"wpDeleteReasonRow\">
1458                                 <td class='mw-label'>" .
1459                                         Xml::label( wfMsg( 'deleteotherreason' ), 'wpReason' ) .
1460                                 "</td>
1461                                 <td class='mw-input'>" .
1462                                 Html::input( 'wpReason', $reason, 'text', array(
1463                                         'size' => '60',
1464                                         'maxlength' => '255',
1465                                         'tabindex' => '2',
1466                                         'id' => 'wpReason',
1467                                         'autofocus'
1468                                 ) ) .
1469                                 "</td>
1470                         </tr>";
1471
1472                 # Disallow watching if user is not logged in
1473                 if ( $user->isLoggedIn() ) {
1474                         $form .= "
1475                         <tr>
1476                                 <td></td>
1477                                 <td class='mw-input'>" .
1478                                         Xml::checkLabel( wfMsg( 'watchthis' ),
1479                                                 'wpWatch', 'wpWatch', $checkWatch, array( 'tabindex' => '3' ) ) .
1480                                 "</td>
1481                         </tr>";
1482                 }
1483
1484                 $form .= "
1485                         $suppress
1486                         <tr>
1487                                 <td></td>
1488                                 <td class='mw-submit'>" .
1489                                         Xml::submitButton( wfMsg( 'deletepage' ),
1490                                                 array( 'name' => 'wpConfirmB', 'id' => 'wpConfirmB', 'tabindex' => '5' ) ) .
1491                                 "</td>
1492                         </tr>" .
1493                         Xml::closeElement( 'table' ) .
1494                         Xml::closeElement( 'fieldset' ) .
1495                         Html::hidden( 'wpEditToken', $user->getEditToken( array( 'delete', $this->getTitle()->getPrefixedText() ) ) ) .
1496                         Xml::closeElement( 'form' );
1497
1498                         if ( $user->isAllowed( 'editinterface' ) ) {
1499                                 $title = Title::makeTitle( NS_MEDIAWIKI, 'Deletereason-dropdown' );
1500                                 $link = Linker::link(
1501                                         $title,
1502                                         wfMsgHtml( 'delete-edit-reasonlist' ),
1503                                         array(),
1504                                         array( 'action' => 'edit' )
1505                                 );
1506                                 $form .= '<p class="mw-delete-editreasons">' . $link . '</p>';
1507                         }
1508
1509                 $wgOut->addHTML( $form );
1510                 $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1511                 LogEventsList::showLogExtract( $wgOut, 'delete',
1512                         $this->getTitle()->getPrefixedText()
1513                 );
1514         }
1515
1516         /**
1517          * Perform a deletion and output success or failure messages
1518          * @param $reason
1519          * @param $suppress bool
1520          */
1521         public function doDelete( $reason, $suppress = false ) {
1522                 global $wgOut;
1523
1524                 $error = '';
1525                 if ( $this->mPage->doDeleteArticle( $reason, $suppress, 0, true, $error ) ) {
1526                         $deleted = $this->getTitle()->getPrefixedText();
1527
1528                         $wgOut->setPageTitle( wfMessage( 'actioncomplete' ) );
1529                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
1530
1531                         $loglink = '[[Special:Log/delete|' . wfMsgNoTrans( 'deletionlog' ) . ']]';
1532
1533                         $wgOut->addWikiMsg( 'deletedtext', wfEscapeWikiText( $deleted ), $loglink );
1534                         $wgOut->returnToMain( false );
1535                 } else {
1536                         $wgOut->setPageTitle( wfMessage( 'cannotdelete-title', $this->getTitle()->getPrefixedText() ) );
1537                         if ( $error == '' ) {
1538                                 $wgOut->wrapWikiMsg( "<div class=\"error mw-error-cannotdelete\">\n$1\n</div>",
1539                                         array( 'cannotdelete', wfEscapeWikiText( $this->getTitle()->getPrefixedText() ) )
1540                                 );
1541                                 $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1542
1543                                 LogEventsList::showLogExtract(
1544                                         $wgOut,
1545                                         'delete',
1546                                         $this->getTitle()->getPrefixedText()
1547                                 );
1548                         } else {
1549                                 $wgOut->addHTML( $error );
1550                         }
1551                 }
1552         }
1553
1554         /* Caching functions */
1555
1556         /**
1557          * checkLastModified returns true if it has taken care of all
1558          * output to the client that is necessary for this request.
1559          * (that is, it has sent a cached version of the page)
1560          *
1561          * @return boolean true if cached version send, false otherwise
1562          */
1563         protected function tryFileCache() {
1564                 static $called = false;
1565
1566                 if ( $called ) {
1567                         wfDebug( "Article::tryFileCache(): called twice!?\n" );
1568                         return false;
1569                 }
1570
1571                 $called = true;
1572                 if ( $this->isFileCacheable() ) {
1573                         $cache = HTMLFileCache::newFromTitle( $this->getTitle(), 'view' );
1574                         if ( $cache->isCacheGood( $this->mPage->getTouched() ) ) {
1575                                 wfDebug( "Article::tryFileCache(): about to load file\n" );
1576                                 $cache->loadFromFileCache( $this->getContext() );
1577                                 return true;
1578                         } else {
1579                                 wfDebug( "Article::tryFileCache(): starting buffer\n" );
1580                                 ob_start( array( &$cache, 'saveToFileCache' ) );
1581                         }
1582                 } else {
1583                         wfDebug( "Article::tryFileCache(): not cacheable\n" );
1584                 }
1585
1586                 return false;
1587         }
1588
1589         /**
1590          * Check if the page can be cached
1591          * @return bool
1592          */
1593         public function isFileCacheable() {
1594                 $cacheable = false;
1595
1596                 if ( HTMLFileCache::useFileCache( $this->getContext() ) ) {
1597                         $cacheable = $this->mPage->getID()
1598                                 && !$this->mRedirectedFrom && !$this->getTitle()->isRedirect();
1599                         // Extension may have reason to disable file caching on some pages.
1600                         if ( $cacheable ) {
1601                                 $cacheable = wfRunHooks( 'IsFileCacheable', array( &$this ) );
1602                         }
1603                 }
1604
1605                 return $cacheable;
1606         }
1607
1608         /**#@-*/
1609
1610         /**
1611          * Lightweight method to get the parser output for a page, checking the parser cache
1612          * and so on. Doesn't consider most of the stuff that WikiPage::view is forced to
1613          * consider, so it's not appropriate to use there.
1614          *
1615          * @since 1.16 (r52326) for LiquidThreads
1616          *
1617          * @param $oldid mixed integer Revision ID or null
1618          * @param $user User The relevant user
1619          * @return ParserOutput or false if the given revsion ID is not found
1620          */
1621         public function getParserOutput( $oldid = null, User $user = null ) {
1622                 global $wgUser;
1623
1624                 $user = is_null( $user ) ? $wgUser : $user;
1625                 $parserOptions = $this->mPage->makeParserOptions( $user );
1626
1627                 return $this->mPage->getParserOutput( $parserOptions, $oldid );
1628         }
1629
1630         /**
1631          * Get parser options suitable for rendering the primary article wikitext
1632          * @return ParserOptions|false
1633          */
1634         public function getParserOptions() {
1635                 global $wgUser;
1636                 if ( !$this->mParserOptions ) {
1637                         $this->mParserOptions = $this->mPage->makeParserOptions( $wgUser );
1638                 }
1639                 // Clone to allow modifications of the return value without affecting cache
1640                 return clone $this->mParserOptions;
1641         }
1642
1643         /**
1644          * Sets the context this Article is executed in
1645          *
1646          * @param $context IContextSource
1647          * @since 1.18
1648          */
1649         public function setContext( $context ) {
1650                 $this->mContext = $context;
1651         }
1652
1653         /**
1654          * Gets the context this Article is executed in
1655          *
1656          * @return IContextSource
1657          * @since 1.18
1658          */
1659         public function getContext() {
1660                 if ( $this->mContext instanceof IContextSource ) {
1661                         return $this->mContext;
1662                 } else {
1663                         wfDebug( __METHOD__ . " called and \$mContext is null. Return RequestContext::getMain(); for sanity\n" );
1664                         return RequestContext::getMain();
1665                 }
1666         }
1667
1668         /**
1669          * Info about this page
1670          * @deprecated since 1.19
1671          */
1672         public function info() {
1673                 wfDeprecated( __METHOD__, '1.19' );
1674                 Action::factory( 'info', $this )->show();
1675         }
1676
1677         /**
1678          * Mark this particular edit/page as patrolled
1679          * @deprecated since 1.18
1680          */
1681         public function markpatrolled() {
1682                 wfDeprecated( __METHOD__, '1.18' );
1683                 Action::factory( 'markpatrolled', $this )->show();
1684         }
1685
1686         /**
1687          * Handle action=purge
1688          * @deprecated since 1.19
1689          */
1690         public function purge() {
1691                 return Action::factory( 'purge', $this )->show();
1692         }
1693
1694         /**
1695          * Handle action=revert
1696          * @deprecated since 1.19
1697          */
1698         public function revert() {
1699                 wfDeprecated( __METHOD__, '1.19' );
1700                 Action::factory( 'revert', $this )->show();
1701         }
1702
1703         /**
1704          * Handle action=rollback
1705          * @deprecated since 1.19
1706          */
1707         public function rollback() {
1708                 wfDeprecated( __METHOD__, '1.19' );
1709                 Action::factory( 'rollback', $this )->show();
1710         }
1711
1712         /**
1713          * User-interface handler for the "watch" action.
1714          * Requires Request to pass a token as of 1.18.
1715          * @deprecated since 1.18
1716          */
1717         public function watch() {
1718                 wfDeprecated( __METHOD__, '1.18' );
1719                 Action::factory( 'watch', $this )->show();
1720         }
1721
1722         /**
1723          * Add this page to $wgUser's watchlist
1724          *
1725          * This is safe to be called multiple times
1726          *
1727          * @return bool true on successful watch operation
1728          * @deprecated since 1.18
1729          */
1730         public function doWatch() {
1731                 global $wgUser;
1732                 wfDeprecated( __METHOD__, '1.18' );
1733                 return WatchAction::doWatch( $this->getTitle(), $wgUser );
1734         }
1735
1736         /**
1737          * User interface handler for the "unwatch" action.
1738          * Requires Request to pass a token as of 1.18.
1739          * @deprecated since 1.18
1740          */
1741         public function unwatch() {
1742                 wfDeprecated( __METHOD__, '1.18' );
1743                 Action::factory( 'unwatch', $this )->show();
1744         }
1745
1746         /**
1747          * Stop watching a page
1748          * @return bool true on successful unwatch
1749          * @deprecated since 1.18
1750          */
1751         public function doUnwatch() {
1752                 global $wgUser;
1753                 wfDeprecated( __METHOD__, '1.18' );
1754                 return WatchAction::doUnwatch( $this->getTitle(), $wgUser );
1755         }
1756
1757         /**
1758          * Output a redirect back to the article.
1759          * This is typically used after an edit.
1760          *
1761          * @deprecated in 1.18; call $wgOut->redirect() directly
1762          * @param $noRedir Boolean: add redirect=no
1763          * @param $sectionAnchor String: section to redirect to, including "#"
1764          * @param $extraQuery String: extra query params
1765          */
1766         public function doRedirect( $noRedir = false, $sectionAnchor = '', $extraQuery = '' ) {
1767                 wfDeprecated( __METHOD__, '1.18' );
1768                 global $wgOut;
1769
1770                 if ( $noRedir ) {
1771                         $query = 'redirect=no';
1772                         if ( $extraQuery )
1773                                 $query .= "&$extraQuery";
1774                 } else {
1775                         $query = $extraQuery;
1776                 }
1777
1778                 $wgOut->redirect( $this->getTitle()->getFullURL( $query ) . $sectionAnchor );
1779         }
1780
1781         /**
1782          * Use PHP's magic __get handler to handle accessing of
1783          * raw WikiPage fields for backwards compatibility.
1784          *
1785          * @param $fname String Field name
1786          */
1787         public function __get( $fname ) {
1788                 if ( property_exists( $this->mPage, $fname ) ) {
1789                         #wfWarn( "Access to raw $fname field " . __CLASS__ );
1790                         return $this->mPage->$fname;
1791                 }
1792                 trigger_error( 'Inaccessible property via __get(): ' . $fname, E_USER_NOTICE );
1793         }
1794
1795         /**
1796          * Use PHP's magic __set handler to handle setting of
1797          * raw WikiPage fields for backwards compatibility.
1798          *
1799          * @param $fname String Field name
1800          * @param $fvalue mixed New value
1801          */
1802         public function __set( $fname, $fvalue ) {
1803                 if ( property_exists( $this->mPage, $fname ) ) {
1804                         #wfWarn( "Access to raw $fname field of " . __CLASS__ );
1805                         $this->mPage->$fname = $fvalue;
1806                 // Note: extensions may want to toss on new fields
1807                 } elseif ( !in_array( $fname, array( 'mContext', 'mPage' ) ) ) {
1808                         $this->mPage->$fname = $fvalue;
1809                 } else {
1810                         trigger_error( 'Inaccessible property via __set(): ' . $fname, E_USER_NOTICE );
1811                 }
1812         }
1813
1814         /**
1815          * Use PHP's magic __call handler to transform instance calls to
1816          * WikiPage functions for backwards compatibility.
1817          *
1818          * @param $fname String Name of called method
1819          * @param $args Array Arguments to the method
1820          */
1821         public function __call( $fname, $args ) {
1822                 if ( is_callable( array( $this->mPage, $fname ) ) ) {
1823                         #wfWarn( "Call to " . __CLASS__ . "::$fname; please use WikiPage instead" );
1824                         return call_user_func_array( array( $this->mPage, $fname ), $args );
1825                 }
1826                 trigger_error( 'Inaccessible function via __call(): ' . $fname, E_USER_ERROR );
1827         }
1828
1829         // ****** B/C functions to work-around PHP silliness with __call and references ****** //
1830
1831         /**
1832          * @param $limit array
1833          * @param $expiry array
1834          * @param $cascade bool
1835          * @param $reason string
1836          * @param $user User
1837          * @return Status
1838          */
1839         public function doUpdateRestrictions( array $limit, array $expiry, &$cascade, $reason, User $user ) {
1840                 return $this->mPage->doUpdateRestrictions( $limit, $expiry, $cascade, $reason, $user );
1841         }
1842
1843         /**
1844          * @param $limit array
1845          * @param $reason string
1846          * @param $cascade int
1847          * @param $expiry array
1848          * @return bool
1849          */
1850         public function updateRestrictions( $limit = array(), $reason = '', &$cascade = 0, $expiry = array() ) {
1851                 return $this->mPage->updateRestrictions( $limit, $reason, $cascade, $expiry );
1852         }
1853
1854         /**
1855          * @param $reason string
1856          * @param $suppress bool
1857          * @param $id int
1858          * @param $commit bool
1859          * @param $error string
1860          * @return bool
1861          */
1862         public function doDeleteArticle( $reason, $suppress = false, $id = 0, $commit = true, &$error = '' ) {
1863                 return $this->mPage->doDeleteArticle( $reason, $suppress, $id, $commit, $error );
1864         }
1865
1866         /**
1867          * @param $fromP
1868          * @param $summary
1869          * @param $token
1870          * @param $bot
1871          * @param $resultDetails
1872          * @param $user User
1873          * @return array
1874          */
1875         public function doRollback( $fromP, $summary, $token, $bot, &$resultDetails, User $user = null ) {
1876                 global $wgUser;
1877                 $user = is_null( $user ) ? $wgUser : $user;
1878                 return $this->mPage->doRollback( $fromP, $summary, $token, $bot, $resultDetails, $user );
1879         }
1880
1881         /**
1882          * @param $fromP
1883          * @param $summary
1884          * @param $bot
1885          * @param $resultDetails
1886          * @param $guser User
1887          * @return array
1888          */
1889         public function commitRollback( $fromP, $summary, $bot, &$resultDetails, User $guser = null ) {
1890                 global $wgUser;
1891                 $guser = is_null( $guser ) ? $wgUser : $guser;
1892                 return $this->mPage->commitRollback( $fromP, $summary, $bot, $resultDetails, $guser );
1893         }
1894
1895         /**
1896          * @param $hasHistory bool
1897          * @return mixed
1898          */
1899         public function generateReason( &$hasHistory ) {
1900         $title = $this->mPage->getTitle();
1901         $handler = ContentHandler::getForTitle( $title );
1902                 return $handler->getAutoDeleteReason( $title, $hasHistory );
1903         }
1904
1905         // ****** B/C functions for static methods ( __callStatic is PHP>=5.3 ) ****** //
1906
1907         /**
1908          * @return array
1909          */
1910         public static function selectFields() {
1911                 return WikiPage::selectFields();
1912         }
1913
1914         /**
1915          * @param $title Title
1916          */
1917         public static function onArticleCreate( $title ) {
1918                 WikiPage::onArticleCreate( $title );
1919         }
1920
1921         /**
1922          * @param $title Title
1923          */
1924         public static function onArticleDelete( $title ) {
1925                 WikiPage::onArticleDelete( $title );
1926         }
1927
1928         /**
1929          * @param $title Title
1930          */
1931         public static function onArticleEdit( $title ) {
1932                 WikiPage::onArticleEdit( $title );
1933         }
1934
1935         /**
1936          * @param $oldtext
1937          * @param $newtext
1938          * @param $flags
1939          * @return string
1940      * @deprecated since 1.20, use ContentHandler::getAutosummary() instead
1941          */
1942         public static function getAutosummary( $oldtext, $newtext, $flags ) {
1943                 return WikiPage::getAutosummary( $oldtext, $newtext, $flags );
1944         }
1945         // ******
1946 }