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                 $de = new DifferenceEngine( $this->getContext(), $oldid, $diff, $rcid, $purge, $unhide );
 729                 // DifferenceEngine directly fetched the revision:
 730                 $this->mRevIdFetched = $de->mNewid;
 731                 $de->showDiffPage( $diffOnly );
 732
 733                 if ( $diff == 0 || $diff == $this->mPage->getLatest() ) {
 734                         # Run view updates for current revision only
 735                         $this->mPage->doViewUpdates( $wgUser );
 736                 }
 737         }
 738
 739         /**
 740          * Show a page view for a page formatted as CSS or JavaScript. To be called by
 741          * Article::view() only.
 742          *
 743          * This is hooked by SyntaxHighlight_GeSHi to do syntax highlighting of these
 744          * page views.
 745          */
 746         protected function showCssOrJsPage() { #FIXME: move this to ContentHandler!
 747                 global $wgOut;
 748
 749                 $dir = $this->getContext()->getLanguage()->getDir();
 750                 $lang = $this->getContext()->getLanguage()->getCode();
 751
 752                 $wgOut->wrapWikiMsg( "<div id='mw-clearyourcache' lang='$lang' dir='$dir' class='mw-content-$dir'>\n$1\n</div>",
 753                         'clearyourcache' ); #FIXME: do this in handler
 754
 755                 // Give hooks a chance to customise the output
 756                 if ( wfRunHooks( 'ShowRawCssJs', array( $this->mContent, $this->getTitle(), $wgOut ) ) ) {
 757             $po = $this->mContentObject->getParserOutput();
 758                         $wgOut->addHTML( $po->getText() );
 759                 }
 760         }
 761
 762         /**
 763          * Get the robot policy to be used for the current view
 764          * @param $action String the action= GET parameter
 765          * @param $pOutput ParserOutput
 766          * @return Array the policy that should be set
 767          * TODO: actions other than 'view'
 768          */
 769         public function getRobotPolicy( $action, $pOutput ) {
 770                 global $wgOut, $wgArticleRobotPolicies, $wgNamespaceRobotPolicies;
 771                 global $wgDefaultRobotPolicy, $wgRequest;
 772
 773                 $ns = $this->getTitle()->getNamespace();
 774
 775                 if ( $ns == NS_USER || $ns == NS_USER_TALK ) {
 776                         # Don't index user and user talk pages for blocked users (bug 11443)
 777                         if ( !$this->getTitle()->isSubpage() ) {
 778                                 if ( Block::newFromTarget( null, $this->getTitle()->getText() ) instanceof Block ) {
 779                                         return array(
 780                                                 'index'  => 'noindex',
 781                                                 'follow' => 'nofollow'
 782                                         );
 783                                 }
 784                         }
 785                 }
 786
 787                 if ( $this->mPage->getID() === 0 || $this->getOldID() ) {
 788                         # Non-articles (special pages etc), and old revisions
 789                         return array(
 790                                 'index'  => 'noindex',
 791                                 'follow' => 'nofollow'
 792                         );
 793                 } elseif ( $wgOut->isPrintable() ) {
 794                         # Discourage indexing of printable versions, but encourage following
 795                         return array(
 796                                 'index'  => 'noindex',
 797                                 'follow' => 'follow'
 798                         );
 799                 } elseif ( $wgRequest->getInt( 'curid' ) ) {
 800                         # For ?curid=x urls, disallow indexing
 801                         return array(
 802                                 'index'  => 'noindex',
 803                                 'follow' => 'follow'
 804                         );
 805                 }
 806
 807                 # Otherwise, construct the policy based on the various config variables.
 808                 $policy = self::formatRobotPolicy( $wgDefaultRobotPolicy );
 809
 810                 if ( isset( $wgNamespaceRobotPolicies[$ns] ) ) {
 811                         # Honour customised robot policies for this namespace
 812                         $policy = array_merge(
 813                                 $policy,
 814                                 self::formatRobotPolicy( $wgNamespaceRobotPolicies[$ns] )
 815                         );
 816                 }
 817                 if ( $this->getTitle()->canUseNoindex() && is_object( $pOutput ) && $pOutput->getIndexPolicy() ) {
 818                         # __INDEX__ and __NOINDEX__ magic words, if allowed. Incorporates
 819                         # a final sanity check that we have really got the parser output.
 820                         $policy = array_merge(
 821                                 $policy,
 822                                 array( 'index' => $pOutput->getIndexPolicy() )
 823                         );
 824                 }
 825
 826                 if ( isset( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] ) ) {
 827                         # (bug 14900) site config can override user-defined __INDEX__ or __NOINDEX__
 828                         $policy = array_merge(
 829                                 $policy,
 830                                 self::formatRobotPolicy( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] )
 831                         );
 832                 }
 833
 834                 return $policy;
 835         }
 836
 837         /**
 838          * Converts a String robot policy into an associative array, to allow
 839          * merging of several policies using array_merge().
 840          * @param $policy Mixed, returns empty array on null/false/'', transparent
 841          *            to already-converted arrays, converts String.
 842          * @return Array: 'index' => <indexpolicy>, 'follow' => <followpolicy>
 843          */
 844         public static function formatRobotPolicy( $policy ) {
 845                 if ( is_array( $policy ) ) {
 846                         return $policy;
 847                 } elseif ( !$policy ) {
 848                         return array();
 849                 }
 850
 851                 $policy = explode( ',', $policy );
 852                 $policy = array_map( 'trim', $policy );
 853
 854                 $arr = array();
 855                 foreach ( $policy as $var ) {
 856                         if ( in_array( $var, array( 'index', 'noindex' ) ) ) {
 857                                 $arr['index'] = $var;
 858                         } elseif ( in_array( $var, array( 'follow', 'nofollow' ) ) ) {
 859                                 $arr['follow'] = $var;
 860                         }
 861                 }
 862
 863                 return $arr;
 864         }
 865
 866         /**
 867          * If this request is a redirect view, send "redirected from" subtitle to
 868          * $wgOut. Returns true if the header was needed, false if this is not a
 869          * redirect view. Handles both local and remote redirects.
 870          *
 871          * @return boolean
 872          */
 873         public function showRedirectedFromHeader() {
 874                 global $wgOut, $wgRequest, $wgRedirectSources;
 875
 876                 $rdfrom = $wgRequest->getVal( 'rdfrom' );
 877
 878                 if ( isset( $this->mRedirectedFrom ) ) {
 879                         // This is an internally redirected page view.
 880                         // We'll need a backlink to the source page for navigation.
 881                         if ( wfRunHooks( 'ArticleViewRedirect', array( &$this ) ) ) {
 882                                 $redir = Linker::linkKnown(
 883                                         $this->mRedirectedFrom,
 884                                         null,
 885                                         array(),
 886                                         array( 'redirect' => 'no' )
 887                                 );
 888
 889                                 $wgOut->addSubtitle( wfMessage( 'redirectedfrom' )->rawParams( $redir ) );
 890
 891                                 // Set the fragment if one was specified in the redirect
 892                                 if ( strval( $this->getTitle()->getFragment() ) != '' ) {
 893                                         $fragment = Xml::escapeJsString( $this->getTitle()->getFragmentForURL() );
 894                                         $wgOut->addInlineScript( "redirectToFragment(\"$fragment\");" );
 895                                 }
 896
 897                                 // Add a <link rel="canonical"> tag
 898                                 $wgOut->addLink( array( 'rel' => 'canonical',
 899                                         'href' => $this->getTitle()->getLocalURL() )
 900                                 );
 901
 902                                 // Tell $wgOut the user arrived at this article through a redirect
 903                                 $wgOut->setRedirectedFrom( $this->mRedirectedFrom );
 904
 905                                 return true;
 906                         }
 907                 } elseif ( $rdfrom ) {
 908                         // This is an externally redirected view, from some other wiki.
 909                         // If it was reported from a trusted site, supply a backlink.
 910                         if ( $wgRedirectSources && preg_match( $wgRedirectSources, $rdfrom ) ) {
 911                                 $redir = Linker::makeExternalLink( $rdfrom, $rdfrom );
 912                                 $wgOut->addSubtitle( wfMessage( 'redirectedfrom' )->rawParams( $redir ) );
 913
 914                                 return true;
 915                         }
 916                 }
 917
 918                 return false;
 919         }
 920
 921         /**
 922          * Show a header specific to the namespace currently being viewed, like
 923          * [[MediaWiki:Talkpagetext]]. For Article::view().
 924          */
 925         public function showNamespaceHeader() {
 926                 global $wgOut;
 927
 928                 if ( $this->getTitle()->isTalkPage() ) {
 929                         if ( !wfMessage( 'talkpageheader' )->isDisabled() ) {
 930                                 $wgOut->wrapWikiMsg( "<div class=\"mw-talkpageheader\">\n$1\n</div>", array( 'talkpageheader' ) );
 931                         }
 932                 }
 933         }
 934
 935         /**
 936          * Show the footer section of an ordinary page view
 937          */
 938         public function showViewFooter() {
 939                 global $wgOut;
 940
 941                 # check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
 942                 if ( $this->getTitle()->getNamespace() == NS_USER_TALK && IP::isValid( $this->getTitle()->getText() ) ) {
 943                         $wgOut->addWikiMsg( 'anontalkpagetext' );
 944                 }
 945
 946                 # If we have been passed an &rcid= parameter, we want to give the user a
 947                 # chance to mark this new article as patrolled.
 948                 $this->showPatrolFooter();
 949
 950                 wfRunHooks( 'ArticleViewFooter', array( $this ) );
 951
 952         }
 953
 954         /**
 955          * If patrol is possible, output a patrol UI box. This is called from the
 956          * footer section of ordinary page views. If patrol is not possible or not
 957          * desired, does nothing.
 958          */
 959         public function showPatrolFooter() {
 960                 global $wgOut, $wgRequest, $wgUser;
 961
 962                 $rcid = $wgRequest->getVal( 'rcid' );
 963
 964                 if ( !$rcid || !$this->getTitle()->quickUserCan( 'patrol' ) ) {
 965                         return;
 966                 }
 967
 968                 $token = $wgUser->getEditToken( $rcid );
 969                 $wgOut->preventClickjacking();
 970
 971                 $wgOut->addHTML(
 972                         "<div class='patrollink'>" .
 973                                 wfMsgHtml(
 974                                         'markaspatrolledlink',
 975                                         Linker::link(
 976                                                 $this->getTitle(),
 977                                                 wfMsgHtml( 'markaspatrolledtext' ),
 978                                                 array(),
 979                                                 array(
 980                                                         'action' => 'markpatrolled',
 981                                                         'rcid' => $rcid,
 982                                                         'token' => $token,
 983                                                 ),
 984                                                 array( 'known', 'noclasses' )
 985                                         )
 986                                 ) .
 987                         '</div>'
 988                 );
 989         }
 990
 991         /**
 992          * Show the error text for a missing article. For articles in the MediaWiki
 993          * namespace, show the default message text. To be called from Article::view().
 994          */
 995         public function showMissingArticle() {
 996                 global $wgOut, $wgRequest, $wgUser, $wgSend404Code;
 997
 998                 # Show info in user (talk) namespace. Does the user exist? Is he blocked?
 999                 if ( $this->getTitle()->getNamespace() == NS_USER || $this->getTitle()->getNamespace() == NS_USER_TALK ) {
1000                         $parts = explode( '/', $this->getTitle()->getText() );
1001                         $rootPart = $parts[0];
1002                         $user = User::newFromName( $rootPart, false /* allow IP users*/ );
1003                         $ip = User::isIP( $rootPart );
1004
1005                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1006                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n\$1\n</div>",
1007                                         array( 'userpage-userdoesnotexist-view', wfEscapeWikiText( $rootPart ) ) );
1008                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1009                                 LogEventsList::showLogExtract(
1010                                         $wgOut,
1011                                         'block',
1012                                         $user->getUserPage()->getPrefixedText(),
1013                                         '',
1014                                         array(
1015                                                 'lim' => 1,
1016                                                 'showIfEmpty' => false,
1017                                                 'msgKey' => array(
1018                                                         'blocked-notice-logextract',
1019                                                         $user->getName() # Support GENDER in notice
1020                                                 )
1021                                         )
1022                                 );
1023                         }
1024                 }
1025
1026                 wfRunHooks( 'ShowMissingArticle', array( $this ) );
1027
1028                 # Show delete and move logs
1029                 LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->getTitle()->getPrefixedText(), '',
1030                         array(  'lim' => 10,
1031                                 'conds' => array( "log_action != 'revision'" ),
1032                                 'showIfEmpty' => false,
1033                                 'msgKey' => array( 'moveddeleted-notice' ) )
1034                 );
1035
1036                 # Show error message
1037                 $oldid = $this->getOldID();
1038                 if ( $oldid ) {
1039                         $text = wfMsgNoTrans( 'missing-article',
1040                                 $this->getTitle()->getPrefixedText(),
1041                                 wfMsgNoTrans( 'missingarticle-rev', $oldid ) );
1042                 } elseif ( $this->getTitle()->getNamespace() === NS_MEDIAWIKI ) {
1043                         // Use the default message text
1044                         $text = $this->getTitle()->getDefaultMessageText();
1045                 } else {
1046                         $createErrors = $this->getTitle()->getUserPermissionsErrors( 'create', $wgUser );
1047                         $editErrors = $this->getTitle()->getUserPermissionsErrors( 'edit', $wgUser );
1048                         $errors = array_merge( $createErrors, $editErrors );
1049
1050                         if ( !count( $errors ) ) {
1051                                 $text = wfMsgNoTrans( 'noarticletext' );
1052                         } else {
1053                                 $text = wfMsgNoTrans( 'noarticletext-nopermission' );
1054                         }
1055                 }
1056                 $text = "<div class='noarticletext'>\n$text\n</div>";
1057
1058                 if ( !$this->mPage->hasViewableContent() && $wgSend404Code ) {
1059                         // If there's no backing content, send a 404 Not Found
1060                         // for better machine handling of broken links.
1061                         $wgRequest->response()->header( "HTTP/1.1 404 Not Found" );
1062                 }
1063
1064                 $wgOut->addWikiText( $text );
1065         }
1066
1067         /**
1068          * If the revision requested for view is deleted, check permissions.
1069          * Send either an error message or a warning header to $wgOut.
1070          *
1071          * @return boolean true if the view is allowed, false if not.
1072          */
1073         public function showDeletedRevisionHeader() {
1074                 global $wgOut, $wgRequest;
1075
1076                 if ( !$this->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1077                         // Not deleted
1078                         return true;
1079                 }
1080
1081                 // If the user is not allowed to see it...
1082                 if ( !$this->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1083                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1084                                 'rev-deleted-text-permission' );
1085
1086                         return false;
1087                 // If the user needs to confirm that they want to see it...
1088                 } elseif ( $wgRequest->getInt( 'unhide' ) != 1 ) {
1089                         # Give explanation and add a link to view the revision...
1090                         $oldid = intval( $this->getOldID() );
1091                         $link = $this->getTitle()->getFullUrl( "oldid={$oldid}&unhide=1" );
1092                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1093                                 'rev-suppressed-text-unhide' : 'rev-deleted-text-unhide';
1094                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1095                                 array( $msg, $link ) );
1096
1097                         return false;
1098                 // We are allowed to see...
1099                 } else {
1100                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1101                                 'rev-suppressed-text-view' : 'rev-deleted-text-view';
1102                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", $msg );
1103
1104                         return true;
1105                 }
1106         }
1107
1108         /**
1109          * Generate the navigation links when browsing through an article revisions
1110          * It shows the information as:
1111          *   Revision as of \<date\>; view current revision
1112          *   \<- Previous version | Next Version -\>
1113          *
1114          * @param $oldid String: revision ID of this article revision
1115          */
1116         public function setOldSubtitle( $oldid = 0 ) {
1117                 global $wgLang, $wgOut, $wgUser, $wgRequest;
1118
1119                 if ( !wfRunHooks( 'DisplayOldSubtitle', array( &$this, &$oldid ) ) ) {
1120                         return;
1121                 }
1122
1123                 $unhide = $wgRequest->getInt( 'unhide' ) == 1;
1124
1125                 # Cascade unhide param in links for easy deletion browsing
1126                 $extraParams = array();
1127                 if ( $wgRequest->getVal( 'unhide' ) ) {
1128                         $extraParams['unhide'] = 1;
1129                 }
1130
1131                 $revision = Revision::newFromId( $oldid );
1132                 $timestamp = $revision->getTimestamp();
1133
1134                 $current = ( $oldid == $this->mPage->getLatest() );
1135                 $td = $wgLang->timeanddate( $timestamp, true );
1136                 $tddate = $wgLang->date( $timestamp, true );
1137                 $tdtime = $wgLang->time( $timestamp, true );
1138
1139                 # Show user links if allowed to see them. If hidden, then show them only if requested...
1140                 $userlinks = Linker::revUserTools( $revision, !$unhide );
1141
1142                 $infomsg = $current && !wfMessage( 'revision-info-current' )->isDisabled()
1143                         ? 'revision-info-current'
1144                         : 'revision-info';
1145
1146                 $wgOut->addSubtitle( "<div id=\"mw-{$infomsg}\">" . wfMessage( $infomsg,
1147                         $td )->rawParams( $userlinks )->params( $revision->getID(), $tddate,
1148                         $tdtime, $revision->getUser() )->parse() . "</div>" );
1149
1150                 $lnk = $current
1151                         ? wfMsgHtml( 'currentrevisionlink' )
1152                         : Linker::link(
1153                                 $this->getTitle(),
1154                                 wfMsgHtml( 'currentrevisionlink' ),
1155                                 array(),
1156                                 $extraParams,
1157                                 array( 'known', 'noclasses' )
1158                         );
1159                 $curdiff = $current
1160                         ? wfMsgHtml( 'diff' )
1161                         : Linker::link(
1162                                 $this->getTitle(),
1163                                 wfMsgHtml( 'diff' ),
1164                                 array(),
1165                                 array(
1166                                         'diff' => 'cur',
1167                                         'oldid' => $oldid
1168                                 ) + $extraParams,
1169                                 array( 'known', 'noclasses' )
1170                         );
1171                 $prev = $this->getTitle()->getPreviousRevisionID( $oldid ) ;
1172                 $prevlink = $prev
1173                         ? Linker::link(
1174                                 $this->getTitle(),
1175                                 wfMsgHtml( 'previousrevision' ),
1176                                 array(),
1177                                 array(
1178                                         'direction' => 'prev',
1179                                         'oldid' => $oldid
1180                                 ) + $extraParams,
1181                                 array( 'known', 'noclasses' )
1182                         )
1183                         : wfMsgHtml( 'previousrevision' );
1184                 $prevdiff = $prev
1185                         ? Linker::link(
1186                                 $this->getTitle(),
1187                                 wfMsgHtml( 'diff' ),
1188                                 array(),
1189                                 array(
1190                                         'diff' => 'prev',
1191                                         'oldid' => $oldid
1192                                 ) + $extraParams,
1193                                 array( 'known', 'noclasses' )
1194                         )
1195                         : wfMsgHtml( 'diff' );
1196                 $nextlink = $current
1197                         ? wfMsgHtml( 'nextrevision' )
1198                         : Linker::link(
1199                                 $this->getTitle(),
1200                                 wfMsgHtml( 'nextrevision' ),
1201                                 array(),
1202                                 array(
1203                                         'direction' => 'next',
1204                                         'oldid' => $oldid
1205                                 ) + $extraParams,
1206                                 array( 'known', 'noclasses' )
1207                         );
1208                 $nextdiff = $current
1209                         ? wfMsgHtml( 'diff' )
1210                         : Linker::link(
1211                                 $this->getTitle(),
1212                                 wfMsgHtml( 'diff' ),
1213                                 array(),
1214                                 array(
1215                                         'diff' => 'next',
1216                                         'oldid' => $oldid
1217                                 ) + $extraParams,
1218                                 array( 'known', 'noclasses' )
1219                         );
1220
1221                 $cdel = Linker::getRevDeleteLink( $wgUser, $revision, $this->getTitle() );
1222                 if ( $cdel !== '' ) {
1223                         $cdel .= ' ';
1224                 }
1225
1226                 $wgOut->addSubtitle( "<div id=\"mw-revision-nav\">" . $cdel .
1227                         wfMsgExt( 'revision-nav', array( 'escapenoentities', 'parsemag', 'replaceafter' ),
1228                         $prevdiff, $prevlink, $lnk, $curdiff, $nextlink, $nextdiff ) . "</div>" );
1229         }
1230
1231         /**
1232          * View redirect
1233          *
1234          * @param $target Title|Array of destination(s) to redirect
1235          * @param $appendSubtitle Boolean [optional]
1236          * @param $forceKnown Boolean: should the image be shown as a bluelink regardless of existence?
1237          * @return string containing HMTL with redirect link
1238          */
1239         public function viewRedirect( $target, $appendSubtitle = true, $forceKnown = false ) {
1240                 global $wgOut, $wgStylePath;
1241
1242                 if ( !is_array( $target ) ) {
1243                         $target = array( $target );
1244                 }
1245
1246                 $lang = $this->getTitle()->getPageLanguage();
1247                 $imageDir = $lang->getDir();
1248
1249                 if ( $appendSubtitle ) {
1250                         $wgOut->appendSubtitle( wfMsgHtml( 'redirectpagesub' ) );
1251                 }
1252
1253                 // the loop prepends the arrow image before the link, so the first case needs to be outside
1254
1255                 /**
1256                  * @var $title Title
1257                  */
1258                 $title = array_shift( $target );
1259
1260                 if ( $forceKnown ) {
1261                         $link = Linker::linkKnown( $title, htmlspecialchars( $title->getFullText() ) );
1262                 } else {
1263                         $link = Linker::link( $title, htmlspecialchars( $title->getFullText() ) );
1264                 }
1265
1266                 $nextRedirect = $wgStylePath . '/common/images/nextredirect' . $imageDir . '.png';
1267                 $alt = $lang->isRTL() ? '←' : '→';
1268                 // Automatically append redirect=no to each link, since most of them are redirect pages themselves.
1269                 foreach ( $target as $rt ) {
1270                         $link .= Html::element( 'img', array( 'src' => $nextRedirect, 'alt' => $alt ) );
1271                         if ( $forceKnown ) {
1272                                 $link .= Linker::linkKnown( $rt, htmlspecialchars( $rt->getFullText(), array(), array( 'redirect' => 'no' ) ) );
1273                         } else {
1274                                 $link .= Linker::link( $rt, htmlspecialchars( $rt->getFullText() ), array(), array( 'redirect' => 'no' ) );
1275                         }
1276                 }
1277
1278                 $imageUrl = $wgStylePath . '/common/images/redirect' . $imageDir . '.png';
1279                 return '<div class="redirectMsg">' .
1280                         Html::element( 'img', array( 'src' => $imageUrl, 'alt' => '#REDIRECT' ) ) .
1281                         '<span class="redirectText">' . $link . '</span></div>';
1282         }
1283
1284         /**
1285          * Handle action=render
1286          */
1287         public function render() {
1288                 global $wgOut;
1289
1290                 $wgOut->setArticleBodyOnly( true );
1291                 $this->view();
1292         }
1293
1294         /**
1295          * action=protect handler
1296          */
1297         public function protect() {
1298                 $form = new ProtectionForm( $this );
1299                 $form->execute();
1300         }
1301
1302         /**
1303          * action=unprotect handler (alias)
1304          */
1305         public function unprotect() {
1306                 $this->protect();
1307         }
1308
1309         /**
1310          * UI entry point for page deletion
1311          */
1312         public function delete() {
1313                 global $wgOut, $wgRequest, $wgLang;
1314
1315                 # This code desperately needs to be totally rewritten
1316
1317                 $title = $this->getTitle();
1318                 $user = $this->getContext()->getUser();
1319
1320                 # Check permissions
1321                 $permission_errors = $title->getUserPermissionsErrors( 'delete', $user );
1322                 if ( count( $permission_errors ) ) {
1323                         throw new PermissionsError( 'delete', $permission_errors );
1324                 }
1325
1326                 # Read-only check...
1327                 if ( wfReadOnly() ) {
1328                         throw new ReadOnlyError;
1329                 }
1330
1331                 # Better double-check that it hasn't been deleted yet!
1332                 $dbw = wfGetDB( DB_MASTER );
1333                 $conds = $title->pageCond();
1334                 $latest = $dbw->selectField( 'page', 'page_latest', $conds, __METHOD__ );
1335                 if ( $latest === false ) {
1336                         $wgOut->setPageTitle( wfMessage( 'cannotdelete-title', $title->getPrefixedText() ) );
1337                         $wgOut->wrapWikiMsg( "<div class=\"error mw-error-cannotdelete\">\n$1\n</div>",
1338                                         array( 'cannotdelete', wfEscapeWikiText( $title->getPrefixedText() ) )
1339                                 );
1340                         $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1341                         LogEventsList::showLogExtract(
1342                                 $wgOut,
1343                                 'delete',
1344                                 $title->getPrefixedText()
1345                         );
1346
1347                         return;
1348                 }
1349
1350                 $deleteReasonList = $wgRequest->getText( 'wpDeleteReasonList', 'other' );
1351                 $deleteReason = $wgRequest->getText( 'wpReason' );
1352
1353                 if ( $deleteReasonList == 'other' ) {
1354                         $reason = $deleteReason;
1355                 } elseif ( $deleteReason != '' ) {
1356                         // Entry from drop down menu + additional comment
1357                         $reason = $deleteReasonList . wfMsgForContent( 'colon-separator' ) . $deleteReason;
1358                 } else {
1359                         $reason = $deleteReasonList;
1360                 }
1361
1362                 if ( $wgRequest->wasPosted() && $user->matchEditToken( $wgRequest->getVal( 'wpEditToken' ),
1363                         array( 'delete', $this->getTitle()->getPrefixedText() ) ) )
1364                 {
1365                         # Flag to hide all contents of the archived revisions
1366                         $suppress = $wgRequest->getVal( 'wpSuppress' ) && $user->isAllowed( 'suppressrevision' );
1367
1368                         $this->doDelete( $reason, $suppress );
1369
1370                         if ( $wgRequest->getCheck( 'wpWatch' ) && $user->isLoggedIn() ) {
1371                                 $this->doWatch();
1372                         } elseif ( $title->userIsWatching() ) {
1373                                 $this->doUnwatch();
1374                         }
1375
1376                         return;
1377                 }
1378
1379                 // Generate deletion reason
1380                 $hasHistory = false;
1381                 if ( !$reason ) {
1382                         $reason = $this->generateReason( $hasHistory );
1383                 }
1384
1385                 // If the page has a history, insert a warning
1386                 if ( $hasHistory ) {
1387                         $revisions = $this->mTitle->estimateRevisionCount();
1388                         // @todo FIXME: i18n issue/patchwork message
1389                         $wgOut->addHTML( '<strong class="mw-delete-warning-revisions">' .
1390                                 wfMsgExt( 'historywarning', array( 'parseinline' ), $wgLang->formatNum( $revisions ) ) .
1391                                 wfMsgHtml( 'word-separator' ) . Linker::link( $title,
1392                                         wfMsgHtml( 'history' ),
1393                                         array( 'rel' => 'archives' ),
1394                                         array( 'action' => 'history' ) ) .
1395                                 '</strong>'
1396                         );
1397
1398                         if ( $this->mTitle->isBigDeletion() ) {
1399                                 global $wgDeleteRevisionsLimit;
1400                                 $wgOut->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n",
1401                                         array( 'delete-warning-toobig', $wgLang->formatNum( $wgDeleteRevisionsLimit ) ) );
1402                         }
1403                 }
1404
1405                 return $this->confirmDelete( $reason );
1406         }
1407
1408         /**
1409          * Output deletion confirmation dialog
1410          * @todo FIXME: Move to another file?
1411          * @param $reason String: prefilled reason
1412          */
1413         public function confirmDelete( $reason ) {
1414                 global $wgOut;
1415
1416                 wfDebug( "Article::confirmDelete\n" );
1417
1418                 $wgOut->setPageTitle( wfMessage( 'delete-confirm', $this->getTitle()->getPrefixedText() ) );
1419                 $wgOut->addBacklinkSubtitle( $this->getTitle() );
1420                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1421                 $wgOut->addWikiMsg( 'confirmdeletetext' );
1422
1423                 wfRunHooks( 'ArticleConfirmDelete', array( $this, $wgOut, &$reason ) );
1424
1425                 $user = $this->getContext()->getUser();
1426
1427                 if ( $user->isAllowed( 'suppressrevision' ) ) {
1428                         $suppress = "<tr id=\"wpDeleteSuppressRow\">
1429                                         <td></td>
1430                                         <td class='mw-input'><strong>" .
1431                                                 Xml::checkLabel( wfMsg( 'revdelete-suppress' ),
1432                                                         'wpSuppress', 'wpSuppress', false, array( 'tabindex' => '4' ) ) .
1433                                         "</strong></td>
1434                                 </tr>";
1435                 } else {
1436                         $suppress = '';
1437                 }
1438                 $checkWatch = $user->getBoolOption( 'watchdeletion' ) || $this->getTitle()->userIsWatching();
1439
1440                 $form = Xml::openElement( 'form', array( 'method' => 'post',
1441                         'action' => $this->getTitle()->getLocalURL( 'action=delete' ), 'id' => 'deleteconfirm' ) ) .
1442                         Xml::openElement( 'fieldset', array( 'id' => 'mw-delete-table' ) ) .
1443                         Xml::tags( 'legend', null, wfMsgExt( 'delete-legend', array( 'parsemag', 'escapenoentities' ) ) ) .
1444                         Xml::openElement( 'table', array( 'id' => 'mw-deleteconfirm-table' ) ) .
1445                         "<tr id=\"wpDeleteReasonListRow\">
1446                                 <td class='mw-label'>" .
1447                                         Xml::label( wfMsg( 'deletecomment' ), 'wpDeleteReasonList' ) .
1448                                 "</td>
1449                                 <td class='mw-input'>" .
1450                                         Xml::listDropDown( 'wpDeleteReasonList',
1451                                                 wfMsgForContent( 'deletereason-dropdown' ),
1452                                                 wfMsgForContent( 'deletereasonotherlist' ), '', 'wpReasonDropDown', 1 ) .
1453                                 "</td>
1454                         </tr>
1455                         <tr id=\"wpDeleteReasonRow\">
1456                                 <td class='mw-label'>" .
1457                                         Xml::label( wfMsg( 'deleteotherreason' ), 'wpReason' ) .
1458                                 "</td>
1459                                 <td class='mw-input'>" .
1460                                 Html::input( 'wpReason', $reason, 'text', array(
1461                                         'size' => '60',
1462                                         'maxlength' => '255',
1463                                         'tabindex' => '2',
1464                                         'id' => 'wpReason',
1465                                         'autofocus'
1466                                 ) ) .
1467                                 "</td>
1468                         </tr>";
1469
1470                 # Disallow watching if user is not logged in
1471                 if ( $user->isLoggedIn() ) {
1472                         $form .= "
1473                         <tr>
1474                                 <td></td>
1475                                 <td class='mw-input'>" .
1476                                         Xml::checkLabel( wfMsg( 'watchthis' ),
1477                                                 'wpWatch', 'wpWatch', $checkWatch, array( 'tabindex' => '3' ) ) .
1478                                 "</td>
1479                         </tr>";
1480                 }
1481
1482                 $form .= "
1483                         $suppress
1484                         <tr>
1485                                 <td></td>
1486                                 <td class='mw-submit'>" .
1487                                         Xml::submitButton( wfMsg( 'deletepage' ),
1488                                                 array( 'name' => 'wpConfirmB', 'id' => 'wpConfirmB', 'tabindex' => '5' ) ) .
1489                                 "</td>
1490                         </tr>" .
1491                         Xml::closeElement( 'table' ) .
1492                         Xml::closeElement( 'fieldset' ) .
1493                         Html::hidden( 'wpEditToken', $user->getEditToken( array( 'delete', $this->getTitle()->getPrefixedText() ) ) ) .
1494                         Xml::closeElement( 'form' );
1495
1496                         if ( $user->isAllowed( 'editinterface' ) ) {
1497                                 $title = Title::makeTitle( NS_MEDIAWIKI, 'Deletereason-dropdown' );
1498                                 $link = Linker::link(
1499                                         $title,
1500                                         wfMsgHtml( 'delete-edit-reasonlist' ),
1501                                         array(),
1502                                         array( 'action' => 'edit' )
1503                                 );
1504                                 $form .= '<p class="mw-delete-editreasons">' . $link . '</p>';
1505                         }
1506
1507                 $wgOut->addHTML( $form );
1508                 $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1509                 LogEventsList::showLogExtract( $wgOut, 'delete',
1510                         $this->getTitle()->getPrefixedText()
1511                 );
1512         }
1513
1514         /**
1515          * Perform a deletion and output success or failure messages
1516          * @param $reason
1517          * @param $suppress bool
1518          */
1519         public function doDelete( $reason, $suppress = false ) {
1520                 global $wgOut;
1521
1522                 $error = '';
1523                 if ( $this->mPage->doDeleteArticle( $reason, $suppress, 0, true, $error ) ) {
1524                         $deleted = $this->getTitle()->getPrefixedText();
1525
1526                         $wgOut->setPageTitle( wfMessage( 'actioncomplete' ) );
1527                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
1528
1529                         $loglink = '[[Special:Log/delete|' . wfMsgNoTrans( 'deletionlog' ) . ']]';
1530
1531                         $wgOut->addWikiMsg( 'deletedtext', wfEscapeWikiText( $deleted ), $loglink );
1532                         $wgOut->returnToMain( false );
1533                 } else {
1534                         $wgOut->setPageTitle( wfMessage( 'cannotdelete-title', $this->getTitle()->getPrefixedText() ) );
1535                         if ( $error == '' ) {
1536                                 $wgOut->wrapWikiMsg( "<div class=\"error mw-error-cannotdelete\">\n$1\n</div>",
1537                                         array( 'cannotdelete', wfEscapeWikiText( $this->getTitle()->getPrefixedText() ) )
1538                                 );
1539                                 $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1540
1541                                 LogEventsList::showLogExtract(
1542                                         $wgOut,
1543                                         'delete',
1544                                         $this->getTitle()->getPrefixedText()
1545                                 );
1546                         } else {
1547                                 $wgOut->addHTML( $error );
1548                         }
1549                 }
1550         }
1551
1552         /* Caching functions */
1553
1554         /**
1555          * checkLastModified returns true if it has taken care of all
1556          * output to the client that is necessary for this request.
1557          * (that is, it has sent a cached version of the page)
1558          *
1559          * @return boolean true if cached version send, false otherwise
1560          */
1561         protected function tryFileCache() {
1562                 static $called = false;
1563
1564                 if ( $called ) {
1565                         wfDebug( "Article::tryFileCache(): called twice!?\n" );
1566                         return false;
1567                 }
1568
1569                 $called = true;
1570                 if ( $this->isFileCacheable() ) {
1571                         $cache = HTMLFileCache::newFromTitle( $this->getTitle(), 'view' );
1572                         if ( $cache->isCacheGood( $this->mPage->getTouched() ) ) {
1573                                 wfDebug( "Article::tryFileCache(): about to load file\n" );
1574                                 $cache->loadFromFileCache( $this->getContext() );
1575                                 return true;
1576                         } else {
1577                                 wfDebug( "Article::tryFileCache(): starting buffer\n" );
1578                                 ob_start( array( &$cache, 'saveToFileCache' ) );
1579                         }
1580                 } else {
1581                         wfDebug( "Article::tryFileCache(): not cacheable\n" );
1582                 }
1583
1584                 return false;
1585         }
1586
1587         /**
1588          * Check if the page can be cached
1589          * @return bool
1590          */
1591         public function isFileCacheable() {
1592                 $cacheable = false;
1593
1594                 if ( HTMLFileCache::useFileCache( $this->getContext() ) ) {
1595                         $cacheable = $this->mPage->getID()
1596                                 && !$this->mRedirectedFrom && !$this->getTitle()->isRedirect();
1597                         // Extension may have reason to disable file caching on some pages.
1598                         if ( $cacheable ) {
1599                                 $cacheable = wfRunHooks( 'IsFileCacheable', array( &$this ) );
1600                         }
1601                 }
1602
1603                 return $cacheable;
1604         }
1605
1606         /**#@-*/
1607
1608         /**
1609          * Lightweight method to get the parser output for a page, checking the parser cache
1610          * and so on. Doesn't consider most of the stuff that WikiPage::view is forced to
1611          * consider, so it's not appropriate to use there.
1612          *
1613          * @since 1.16 (r52326) for LiquidThreads
1614          *
1615          * @param $oldid mixed integer Revision ID or null
1616          * @param $user User The relevant user
1617          * @return ParserOutput or false if the given revsion ID is not found
1618          */
1619         public function getParserOutput( $oldid = null, User $user = null ) {
1620                 global $wgUser;
1621
1622                 $user = is_null( $user ) ? $wgUser : $user;
1623                 $parserOptions = $this->mPage->makeParserOptions( $user );
1624
1625                 return $this->mPage->getParserOutput( $parserOptions, $oldid );
1626         }
1627
1628         /**
1629          * Get parser options suitable for rendering the primary article wikitext
1630          * @return ParserOptions|false
1631          */
1632         public function getParserOptions() {
1633                 global $wgUser;
1634                 if ( !$this->mParserOptions ) {
1635                         $this->mParserOptions = $this->mPage->makeParserOptions( $wgUser );
1636                 }
1637                 // Clone to allow modifications of the return value without affecting cache
1638                 return clone $this->mParserOptions;
1639         }
1640
1641         /**
1642          * Sets the context this Article is executed in
1643          *
1644          * @param $context IContextSource
1645          * @since 1.18
1646          */
1647         public function setContext( $context ) {
1648                 $this->mContext = $context;
1649         }
1650
1651         /**
1652          * Gets the context this Article is executed in
1653          *
1654          * @return IContextSource
1655          * @since 1.18
1656          */
1657         public function getContext() {
1658                 if ( $this->mContext instanceof IContextSource ) {
1659                         return $this->mContext;
1660                 } else {
1661                         wfDebug( __METHOD__ . " called and \$mContext is null. Return RequestContext::getMain(); for sanity\n" );
1662                         return RequestContext::getMain();
1663                 }
1664         }
1665
1666         /**
1667          * Info about this page
1668          * @deprecated since 1.19
1669          */
1670         public function info() {
1671                 wfDeprecated( __METHOD__, '1.19' );
1672                 Action::factory( 'info', $this )->show();
1673         }
1674
1675         /**
1676          * Mark this particular edit/page as patrolled
1677          * @deprecated since 1.18
1678          */
1679         public function markpatrolled() {
1680                 wfDeprecated( __METHOD__, '1.18' );
1681                 Action::factory( 'markpatrolled', $this )->show();
1682         }
1683
1684         /**
1685          * Handle action=purge
1686          * @deprecated since 1.19
1687          */
1688         public function purge() {
1689                 return Action::factory( 'purge', $this )->show();
1690         }
1691
1692         /**
1693          * Handle action=revert
1694          * @deprecated since 1.19
1695          */
1696         public function revert() {
1697                 wfDeprecated( __METHOD__, '1.19' );
1698                 Action::factory( 'revert', $this )->show();
1699         }
1700
1701         /**
1702          * Handle action=rollback
1703          * @deprecated since 1.19
1704          */
1705         public function rollback() {
1706                 wfDeprecated( __METHOD__, '1.19' );
1707                 Action::factory( 'rollback', $this )->show();
1708         }
1709
1710         /**
1711          * User-interface handler for the "watch" action.
1712          * Requires Request to pass a token as of 1.18.
1713          * @deprecated since 1.18
1714          */
1715         public function watch() {
1716                 wfDeprecated( __METHOD__, '1.18' );
1717                 Action::factory( 'watch', $this )->show();
1718         }
1719
1720         /**
1721          * Add this page to $wgUser's watchlist
1722          *
1723          * This is safe to be called multiple times
1724          *
1725          * @return bool true on successful watch operation
1726          * @deprecated since 1.18
1727          */
1728         public function doWatch() {
1729                 global $wgUser;
1730                 wfDeprecated( __METHOD__, '1.18' );
1731                 return WatchAction::doWatch( $this->getTitle(), $wgUser );
1732         }
1733
1734         /**
1735          * User interface handler for the "unwatch" action.
1736          * Requires Request to pass a token as of 1.18.
1737          * @deprecated since 1.18
1738          */
1739         public function unwatch() {
1740                 wfDeprecated( __METHOD__, '1.18' );
1741                 Action::factory( 'unwatch', $this )->show();
1742         }
1743
1744         /**
1745          * Stop watching a page
1746          * @return bool true on successful unwatch
1747          * @deprecated since 1.18
1748          */
1749         public function doUnwatch() {
1750                 global $wgUser;
1751                 wfDeprecated( __METHOD__, '1.18' );
1752                 return WatchAction::doUnwatch( $this->getTitle(), $wgUser );
1753         }
1754
1755         /**
1756          * Output a redirect back to the article.
1757          * This is typically used after an edit.
1758          *
1759          * @deprecated in 1.18; call $wgOut->redirect() directly
1760          * @param $noRedir Boolean: add redirect=no
1761          * @param $sectionAnchor String: section to redirect to, including "#"
1762          * @param $extraQuery String: extra query params
1763          */
1764         public function doRedirect( $noRedir = false, $sectionAnchor = '', $extraQuery = '' ) {
1765                 wfDeprecated( __METHOD__, '1.18' );
1766                 global $wgOut;
1767
1768                 if ( $noRedir ) {
1769                         $query = 'redirect=no';
1770                         if ( $extraQuery )
1771                                 $query .= "&$extraQuery";
1772                 } else {
1773                         $query = $extraQuery;
1774                 }
1775
1776                 $wgOut->redirect( $this->getTitle()->getFullURL( $query ) . $sectionAnchor );
1777         }
1778
1779         /**
1780          * Use PHP's magic __get handler to handle accessing of
1781          * raw WikiPage fields for backwards compatibility.
1782          *
1783          * @param $fname String Field name
1784          */
1785         public function __get( $fname ) {
1786                 if ( property_exists( $this->mPage, $fname ) ) {
1787                         #wfWarn( "Access to raw $fname field " . __CLASS__ );
1788                         return $this->mPage->$fname;
1789                 }
1790                 trigger_error( 'Inaccessible property via __get(): ' . $fname, E_USER_NOTICE );
1791         }
1792
1793         /**
1794          * Use PHP's magic __set handler to handle setting of
1795          * raw WikiPage fields for backwards compatibility.
1796          *
1797          * @param $fname String Field name
1798          * @param $fvalue mixed New value
1799          */
1800         public function __set( $fname, $fvalue ) {
1801                 if ( property_exists( $this->mPage, $fname ) ) {
1802                         #wfWarn( "Access to raw $fname field of " . __CLASS__ );
1803                         $this->mPage->$fname = $fvalue;
1804                 // Note: extensions may want to toss on new fields
1805                 } elseif ( !in_array( $fname, array( 'mContext', 'mPage' ) ) ) {
1806                         $this->mPage->$fname = $fvalue;
1807                 } else {
1808                         trigger_error( 'Inaccessible property via __set(): ' . $fname, E_USER_NOTICE );
1809                 }
1810         }
1811
1812         /**
1813          * Use PHP's magic __call handler to transform instance calls to
1814          * WikiPage functions for backwards compatibility.
1815          *
1816          * @param $fname String Name of called method
1817          * @param $args Array Arguments to the method
1818          */
1819         public function __call( $fname, $args ) {
1820                 if ( is_callable( array( $this->mPage, $fname ) ) ) {
1821                         #wfWarn( "Call to " . __CLASS__ . "::$fname; please use WikiPage instead" );
1822                         return call_user_func_array( array( $this->mPage, $fname ), $args );
1823                 }
1824                 trigger_error( 'Inaccessible function via __call(): ' . $fname, E_USER_ERROR );
1825         }
1826
1827         // ****** B/C functions to work-around PHP silliness with __call and references ****** //
1828
1829         /**
1830          * @param $limit array
1831          * @param $expiry array
1832          * @param $cascade bool
1833          * @param $reason string
1834          * @param $user User
1835          * @return Status
1836          */
1837         public function doUpdateRestrictions( array $limit, array $expiry, &$cascade, $reason, User $user ) {
1838                 return $this->mPage->doUpdateRestrictions( $limit, $expiry, $cascade, $reason, $user );
1839         }
1840
1841         /**
1842          * @param $limit array
1843          * @param $reason string
1844          * @param $cascade int
1845          * @param $expiry array
1846          * @return bool
1847          */
1848         public function updateRestrictions( $limit = array(), $reason = '', &$cascade = 0, $expiry = array() ) {
1849                 return $this->mPage->updateRestrictions( $limit, $reason, $cascade, $expiry );
1850         }
1851
1852         /**
1853          * @param $reason string
1854          * @param $suppress bool
1855          * @param $id int
1856          * @param $commit bool
1857          * @param $error string
1858          * @return bool
1859          */
1860         public function doDeleteArticle( $reason, $suppress = false, $id = 0, $commit = true, &$error = '' ) {
1861                 return $this->mPage->doDeleteArticle( $reason, $suppress, $id, $commit, $error );
1862         }
1863
1864         /**
1865          * @param $fromP
1866          * @param $summary
1867          * @param $token
1868          * @param $bot
1869          * @param $resultDetails
1870          * @param $user User
1871          * @return array
1872          */
1873         public function doRollback( $fromP, $summary, $token, $bot, &$resultDetails, User $user = null ) {
1874                 global $wgUser;
1875                 $user = is_null( $user ) ? $wgUser : $user;
1876                 return $this->mPage->doRollback( $fromP, $summary, $token, $bot, $resultDetails, $user );
1877         }
1878
1879         /**
1880          * @param $fromP
1881          * @param $summary
1882          * @param $bot
1883          * @param $resultDetails
1884          * @param $guser User
1885          * @return array
1886          */
1887         public function commitRollback( $fromP, $summary, $bot, &$resultDetails, User $guser = null ) {
1888                 global $wgUser;
1889                 $guser = is_null( $guser ) ? $wgUser : $guser;
1890                 return $this->mPage->commitRollback( $fromP, $summary, $bot, $resultDetails, $guser );
1891         }
1892
1893         /**
1894          * @param $hasHistory bool
1895          * @return mixed
1896          */
1897         public function generateReason( &$hasHistory ) {
1898         $title = $this->mPage->getTitle();
1899         $handler = ContentHandler::getForTitle( $title );
1900                 return $handler->getAutoDeleteReason( $title, $hasHistory );
1901         }
1902
1903         // ****** B/C functions for static methods ( __callStatic is PHP>=5.3 ) ****** //
1904
1905         /**
1906          * @return array
1907          */
1908         public static function selectFields() {
1909                 return WikiPage::selectFields();
1910         }
1911
1912         /**
1913          * @param $title Title
1914          */
1915         public static function onArticleCreate( $title ) {
1916                 WikiPage::onArticleCreate( $title );
1917         }
1918
1919         /**
1920          * @param $title Title
1921          */
1922         public static function onArticleDelete( $title ) {
1923                 WikiPage::onArticleDelete( $title );
1924         }
1925
1926         /**
1927          * @param $title Title
1928          */
1929         public static function onArticleEdit( $title ) {
1930                 WikiPage::onArticleEdit( $title );
1931         }
1932
1933         /**
1934          * @param $oldtext
1935          * @param $newtext
1936          * @param $flags
1937          * @return string
1938      * @deprecated since 1.20, use ContentHandler::getAutosummary() instead
1939          */
1940         public static function getAutosummary( $oldtext, $newtext, $flags ) {
1941                 return WikiPage::getAutosummary( $oldtext, $newtext, $flags );
1942         }
1943         // ******
1944 }