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