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