includes/Article.php

   1 <?php
   2 /**
   3  * User interface for page actions.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * Class for viewing MediaWiki article and history.
  25  *
  26  * This maintains WikiPage functions for backwards compatibility.
  27  *
  28  * @todo move and rewrite code to an Action class
  29  *
  30  * See design.txt for an overview.
  31  * Note: edit user interface and cache support functions have been
  32  * moved to separate EditPage and HTMLFileCache classes.
  33  *
  34  * @internal documentation reviewed 15 Mar 2010
  35  */
  36 class Article extends Page {
  37         /**@{{
  38          * @private
  39          */
  40
  41         /**
  42          * The context this Article is executed in
  43          * @var IContextSource $mContext
  44          */
  45         protected $mContext;
  46
  47         /**
  48          * The WikiPage object of this instance
  49          * @var WikiPage $mPage
  50          */
  51         protected $mPage;
  52
  53         /**
  54          * ParserOptions object for $wgUser articles
  55          * @var ParserOptions $mParserOptions
  56          */
  57         public $mParserOptions;
  58
  59         /**
  60          * Content of the revision we are working on
  61          * @var string $mContent
  62          */
  63         var $mContent;                    // !<
  64
  65         /**
  66          * Is the content ($mContent) already loaded?
  67          * @var bool $mContentLoaded
  68          */
  69         var $mContentLoaded = false;      // !<
  70
  71         /**
  72          * The oldid of the article that is to be shown, 0 for the
  73          * current revision
  74          * @var int|null $mOldId
  75          */
  76         var $mOldId;                      // !<
  77
  78         /**
  79          * Title from which we were redirected here
  80          * @var Title $mRedirectedFrom
  81          */
  82         var $mRedirectedFrom = null;
  83
  84         /**
  85          * URL to redirect to or false if none
  86          * @var string|false $mRedirectUrl
  87          */
  88         var $mRedirectUrl = false;        // !<
  89
  90         /**
  91          * Revision ID of revision we are working on
  92          * @var int $mRevIdFetched
  93          */
  94         var $mRevIdFetched = 0;           // !<
  95
  96         /**
  97          * Revision we are working on
  98          * @var Revision $mRevision
  99          */
 100         var $mRevision = null;
 101
 102         /**
 103          * ParserOutput object
 104          * @var ParserOutput $mParserOutput
 105          */
 106         var $mParserOutput;
 107
 108         /**@}}*/
 109
 110         /**
 111          * Constructor and clear the article
 112          * @param $title Title Reference to a Title object.
 113          * @param $oldId Integer revision ID, null to fetch from request, zero for current
 114          */
 115         public function __construct( Title $title, $oldId = null ) {
 116                 $this->mOldId = $oldId;
 117                 $this->mPage = $this->newPage( $title );
 118         }
 119
 120         /**
 121          * @param $title Title
 122          * @return WikiPage
 123          */
 124         protected function newPage( Title $title ) {
 125                 return new WikiPage( $title );
 126         }
 127
 128         /**
 129          * Constructor from a page id
 130          * @param $id Int article ID to load
 131          * @return Article|null
 132          */
 133         public static function newFromID( $id ) {
 134                 $t = Title::newFromID( $id );
 135                 # @todo FIXME: Doesn't inherit right
 136                 return $t == null ? null : new self( $t );
 137                 # return $t == null ? null : new static( $t ); // PHP 5.3
 138         }
 139
 140         /**
 141          * Create an Article object of the appropriate class for the given page.
 142          *
 143          * @param $title Title
 144          * @param $context IContextSource
 145          * @return Article object
 146          */
 147         public static function newFromTitle( $title, IContextSource $context ) {
 148                 if ( NS_MEDIA == $title->getNamespace() ) {
 149                         // FIXME: where should this go?
 150                         $title = Title::makeTitle( NS_FILE, $title->getDBkey() );
 151                 }
 152
 153                 $page = null;
 154                 wfRunHooks( 'ArticleFromTitle', array( &$title, &$page ) );
 155                 if ( !$page ) {
 156                         switch( $title->getNamespace() ) {
 157                                 case NS_FILE:
 158                                         $page = new ImagePage( $title );
 159                                         break;
 160                                 case NS_CATEGORY:
 161                                         $page = new CategoryPage( $title );
 162                                         break;
 163                                 default:
 164                                         $page = new Article( $title );
 165                         }
 166                 }
 167                 $page->setContext( $context );
 168
 169                 return $page;
 170         }
 171
 172         /**
 173          * Create an Article object of the appropriate class for the given page.
 174          *
 175          * @param $page WikiPage
 176          * @param $context IContextSource
 177          * @return Article object
 178          */
 179         public static function newFromWikiPage( WikiPage $page, IContextSource $context ) {
 180                 $article = self::newFromTitle( $page->getTitle(), $context );
 181                 $article->mPage = $page; // override to keep process cached vars
 182                 return $article;
 183         }
 184
 185         /**
 186          * Tell the page view functions that this view was redirected
 187          * from another page on the wiki.
 188          * @param $from Title object.
 189          */
 190         public function setRedirectedFrom( Title $from ) {
 191                 $this->mRedirectedFrom = $from;
 192         }
 193
 194         /**
 195          * Get the title object of the article
 196          *
 197          * @return Title object of this page
 198          */
 199         public function getTitle() {
 200                 return $this->mPage->getTitle();
 201         }
 202
 203         /**
 204          * Get the WikiPage object of this instance
 205          *
 206          * @since 1.19
 207          * @return WikiPage
 208          */
 209         public function getPage() {
 210                 return $this->mPage;
 211         }
 212
 213         /**
 214          * Clear the object
 215          */
 216         public function clear() {
 217                 $this->mContentLoaded = false;
 218
 219                 $this->mRedirectedFrom = null; # Title object if set
 220                 $this->mRevIdFetched = 0;
 221                 $this->mRedirectUrl = false;
 222
 223                 $this->mPage->clear();
 224         }
 225
 226         /**
 227          * Note that getContent/loadContent do not follow redirects anymore.
 228          * If you need to fetch redirectable content easily, try
 229          * the shortcut in WikiPage::getRedirectTarget()
 230          *
 231          * This function has side effects! Do not use this function if you
 232          * only want the real revision text if any.
 233          *
 234          * @return string Return the text of this revision
 235          */
 236         public function getContent() {
 237                 wfProfileIn( __METHOD__ );
 238
 239                 if ( $this->mPage->getID() === 0 ) {
 240                         # If this is a MediaWiki:x message, then load the messages
 241                         # and return the message value for x.
 242                         if ( $this->getTitle()->getNamespace() == NS_MEDIAWIKI ) {
 243                                 $text = $this->getTitle()->getDefaultMessageText();
 244                                 if ( $text === false ) {
 245                                         $text = '';
 246                                 }
 247                         } else {
 248                                 $message = $this->getContext()->getUser()->isLoggedIn() ? 'noarticletext' : 'noarticletextanon';
 249                                 $text = wfMessage( $message )->text();
 250                         }
 251                         wfProfileOut( __METHOD__ );
 252
 253                         return $text;
 254                 } else {
 255                         $this->fetchContent();
 256                         wfProfileOut( __METHOD__ );
 257
 258                         return $this->mContent;
 259                 }
 260         }
 261
 262         /**
 263          * @return int The oldid of the article that is to be shown, 0 for the
 264          *             current revision
 265          */
 266         public function getOldID() {
 267                 if ( is_null( $this->mOldId ) ) {
 268                         $this->mOldId = $this->getOldIDFromRequest();
 269                 }
 270
 271                 return $this->mOldId;
 272         }
 273
 274         /**
 275          * Sets $this->mRedirectUrl to a correct URL if the query parameters are incorrect
 276          *
 277          * @return int The old id for the request
 278          */
 279         public function getOldIDFromRequest() {
 280                 $this->mRedirectUrl = false;
 281
 282                 $request = $this->getContext()->getRequest();
 283                 $oldid = $request->getIntOrNull( 'oldid' );
 284
 285                 if ( $oldid === null ) {
 286                         return 0;
 287                 }
 288
 289                 if ( $oldid !== 0 ) {
 290                         # Load the given revision and check whether the page is another one.
 291                         # In that case, update this instance to reflect the change.
 292                         if ( $oldid === $this->mPage->getLatest() ) {
 293                                 $this->mRevision = $this->mPage->getRevision();
 294                         } else {
 295                                 $this->mRevision = Revision::newFromId( $oldid );
 296                                 if ( $this->mRevision !== null ) {
 297                                         // Revision title doesn't match the page title given?
 298                                         if ( $this->mPage->getID() != $this->mRevision->getPage() ) {
 299                                                 $function = array( get_class( $this->mPage ), 'newFromID' );
 300                                                 $this->mPage = call_user_func( $function, $this->mRevision->getPage() );
 301                                         }
 302                                 }
 303                         }
 304                 }
 305
 306                 if ( $request->getVal( 'direction' ) == 'next' ) {
 307                         $nextid = $this->getTitle()->getNextRevisionID( $oldid );
 308                         if ( $nextid ) {
 309                                 $oldid = $nextid;
 310                                 $this->mRevision = null;
 311                         } else {
 312                                 $this->mRedirectUrl = $this->getTitle()->getFullURL( 'redirect=no' );
 313                         }
 314                 } elseif ( $request->getVal( 'direction' ) == 'prev' ) {
 315                         $previd = $this->getTitle()->getPreviousRevisionID( $oldid );
 316                         if ( $previd ) {
 317                                 $oldid = $previd;
 318                                 $this->mRevision = null;
 319                         }
 320                 }
 321
 322                 return $oldid;
 323         }
 324
 325         /**
 326          * Load the revision (including text) into this object
 327          *
 328          * @deprecated in 1.19; use fetchContent()
 329          */
 330         function loadContent() {
 331                 wfDeprecated( __METHOD__, '1.19' );
 332                 $this->fetchContent();
 333         }
 334
 335         /**
 336          * Get text of an article from database
 337          * Does *NOT* follow redirects.
 338          *
 339          * @return mixed string containing article contents, or false if null
 340          */
 341         function fetchContent() {
 342                 if ( $this->mContentLoaded ) {
 343                         return $this->mContent;
 344                 }
 345
 346                 wfProfileIn( __METHOD__ );
 347
 348                 $this->mContentLoaded = true;
 349
 350                 $oldid = $this->getOldID();
 351
 352                 # Pre-fill content with error message so that if something
 353                 # fails we'll have something telling us what we intended.
 354                 $this->mContent = wfMessage( 'missing-revision', $oldid )->plain();
 355
 356                 if ( $oldid ) {
 357                         # $this->mRevision might already be fetched by getOldIDFromRequest()
 358                         if ( !$this->mRevision ) {
 359                                 $this->mRevision = Revision::newFromId( $oldid );
 360                                 if ( !$this->mRevision ) {
 361                                         wfDebug( __METHOD__ . " failed to retrieve specified revision, id $oldid\n" );
 362                                         wfProfileOut( __METHOD__ );
 363                                         return false;
 364                                 }
 365                         }
 366                 } else {
 367                         if ( !$this->mPage->getLatest() ) {
 368                                 wfDebug( __METHOD__ . " failed to find page data for title " . $this->getTitle()->getPrefixedText() . "\n" );
 369                                 wfProfileOut( __METHOD__ );
 370                                 return false;
 371                         }
 372
 373                         $this->mRevision = $this->mPage->getRevision();
 374                         if ( !$this->mRevision ) {
 375                                 wfDebug( __METHOD__ . " failed to retrieve current page, rev_id " . $this->mPage->getLatest() . "\n" );
 376                                 wfProfileOut( __METHOD__ );
 377                                 return false;
 378                         }
 379                 }
 380
 381                 // @todo FIXME: Horrible, horrible! This content-loading interface just plain sucks.
 382                 // We should instead work with the Revision object when we need it...
 383                 $this->mContent = $this->mRevision->getText( Revision::FOR_THIS_USER, $this->getContext()->getUser() ); // Loads if user is allowed
 384                 $this->mRevIdFetched = $this->mRevision->getId();
 385
 386                 wfRunHooks( 'ArticleAfterFetchContent', array( &$this, &$this->mContent ) );
 387
 388                 wfProfileOut( __METHOD__ );
 389
 390                 return $this->mContent;
 391         }
 392
 393         /**
 394          * No-op
 395          * @deprecated since 1.18
 396          */
 397         public function forUpdate() {
 398                 wfDeprecated( __METHOD__, '1.18' );
 399         }
 400
 401         /**
 402          * Returns true if the currently-referenced revision is the current edit
 403          * to this page (and it exists).
 404          * @return bool
 405          */
 406         public function isCurrent() {
 407                 # If no oldid, this is the current version.
 408                 if ( $this->getOldID() == 0 ) {
 409                         return true;
 410                 }
 411
 412                 return $this->mPage->exists() && $this->mRevision && $this->mRevision->isCurrent();
 413         }
 414
 415         /**
 416          * Get the fetched Revision object depending on request parameters or null
 417          * on failure.
 418          *
 419          * @since 1.19
 420          * @return Revision|null
 421          */
 422         public function getRevisionFetched() {
 423                 $this->fetchContent();
 424
 425                 return $this->mRevision;
 426         }
 427
 428         /**
 429          * Use this to fetch the rev ID used on page views
 430          *
 431          * @return int revision ID of last article revision
 432          */
 433         public function getRevIdFetched() {
 434                 if ( $this->mRevIdFetched ) {
 435                         return $this->mRevIdFetched;
 436                 } else {
 437                         return $this->mPage->getLatest();
 438                 }
 439         }
 440
 441         /**
 442          * This is the default action of the index.php entry point: just view the
 443          * page of the given title.
 444          */
 445         public function view() {
 446                 global $wgParser, $wgUseFileCache, $wgUseETag, $wgDebugToolbar;
 447
 448                 wfProfileIn( __METHOD__ );
 449
 450                 # Get variables from query string
 451                 # As side effect this will load the revision and update the title
 452                 # in a revision ID is passed in the request, so this should remain
 453                 # the first call of this method even if $oldid is used way below.
 454                 $oldid = $this->getOldID();
 455
 456                 $user = $this->getContext()->getUser();
 457                 # Another whitelist check in case getOldID() is altering the title
 458                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'read', $user );
 459                 if ( count( $permErrors ) ) {
 460                         wfDebug( __METHOD__ . ": denied on secondary read check\n" );
 461                         wfProfileOut( __METHOD__ );
 462                         throw new PermissionsError( 'read', $permErrors );
 463                 }
 464
 465                 $outputPage = $this->getContext()->getOutput();
 466                 # getOldID() may as well want us to redirect somewhere else
 467                 if ( $this->mRedirectUrl ) {
 468                         $outputPage->redirect( $this->mRedirectUrl );
 469                         wfDebug( __METHOD__ . ": redirecting due to oldid\n" );
 470                         wfProfileOut( __METHOD__ );
 471
 472                         return;
 473                 }
 474
 475                 # If we got diff in the query, we want to see a diff page instead of the article.
 476                 if ( $this->getContext()->getRequest()->getCheck( 'diff' ) ) {
 477                         wfDebug( __METHOD__ . ": showing diff page\n" );
 478                         $this->showDiffPage();
 479                         wfProfileOut( __METHOD__ );
 480
 481                         return;
 482                 }
 483
 484                 # Set page title (may be overridden by DISPLAYTITLE)
 485                 $outputPage->setPageTitle( $this->getTitle()->getPrefixedText() );
 486
 487                 $outputPage->setArticleFlag( true );
 488                 # Allow frames by default
 489                 $outputPage->allowClickjacking();
 490
 491                 $parserCache = ParserCache::singleton();
 492
 493                 $parserOptions = $this->getParserOptions();
 494                 # Render printable version, use printable version cache
 495                 if ( $outputPage->isPrintable() ) {
 496                         $parserOptions->setIsPrintable( true );
 497                         $parserOptions->setEditSection( false );
 498                 } elseif ( !$this->isCurrent() || !$this->getTitle()->quickUserCan( 'edit', $user ) ) {
 499                         $parserOptions->setEditSection( false );
 500                 }
 501
 502                 # Try client and file cache
 503                 if ( !$wgDebugToolbar && $oldid === 0 && $this->mPage->checkTouched() ) {
 504                         if ( $wgUseETag ) {
 505                                 $outputPage->setETag( $parserCache->getETag( $this, $parserOptions ) );
 506                         }
 507
 508                         # Is it client cached?
 509                         if ( $outputPage->checkLastModified( $this->mPage->getTouched() ) ) {
 510                                 wfDebug( __METHOD__ . ": done 304\n" );
 511                                 wfProfileOut( __METHOD__ );
 512
 513                                 return;
 514                         # Try file cache
 515                         } elseif ( $wgUseFileCache && $this->tryFileCache() ) {
 516                                 wfDebug( __METHOD__ . ": done file cache\n" );
 517                                 # tell wgOut that output is taken care of
 518                                 $outputPage->disable();
 519                                 $this->mPage->doViewUpdates( $user );
 520                                 wfProfileOut( __METHOD__ );
 521
 522                                 return;
 523                         }
 524                 }
 525
 526                 # Should the parser cache be used?
 527                 $useParserCache = $this->mPage->isParserCacheUsed( $parserOptions, $oldid );
 528                 wfDebug( 'Article::view using parser cache: ' . ( $useParserCache ? 'yes' : 'no' ) . "\n" );
 529                 if ( $user->getStubThreshold() ) {
 530                         wfIncrStats( 'pcache_miss_stub' );
 531                 }
 532
 533                 $this->showRedirectedFromHeader();
 534                 $this->showNamespaceHeader();
 535
 536                 # Iterate through the possible ways of constructing the output text.
 537                 # Keep going until $outputDone is set, or we run out of things to do.
 538                 $pass = 0;
 539                 $outputDone = false;
 540                 $this->mParserOutput = false;
 541
 542                 while ( !$outputDone && ++$pass ) {
 543                         switch( $pass ) {
 544                                 case 1:
 545                                         wfRunHooks( 'ArticleViewHeader', array( &$this, &$outputDone, &$useParserCache ) );
 546                                         break;
 547                                 case 2:
 548                                         # Early abort if the page doesn't exist
 549                                         if ( !$this->mPage->exists() ) {
 550                                                 wfDebug( __METHOD__ . ": showing missing article\n" );
 551                                                 $this->showMissingArticle();
 552                                                 wfProfileOut( __METHOD__ );
 553                                                 return;
 554                                         }
 555
 556                                         # Try the parser cache
 557                                         if ( $useParserCache ) {
 558                                                 $this->mParserOutput = $parserCache->get( $this, $parserOptions );
 559
 560                                                 if ( $this->mParserOutput !== false ) {
 561                                                         if ( $oldid ) {
 562                                                                 wfDebug( __METHOD__ . ": showing parser cache contents for current rev permalink\n" );
 563                                                                 $this->setOldSubtitle( $oldid );
 564                                                         } else {
 565                                                                 wfDebug( __METHOD__ . ": showing parser cache contents\n" );
 566                                                         }
 567                                                         $outputPage->addParserOutput( $this->mParserOutput );
 568                                                         # Ensure that UI elements requiring revision ID have
 569                                                         # the correct version information.
 570                                                         $outputPage->setRevisionId( $this->mPage->getLatest() );
 571                                                         # Preload timestamp to avoid a DB hit
 572                                                         $cachedTimestamp = $this->mParserOutput->getTimestamp();
 573                                                         if ( $cachedTimestamp !== null ) {
 574                                                                 $outputPage->setRevisionTimestamp( $cachedTimestamp );
 575                                                                 $this->mPage->setTimestamp( $cachedTimestamp );
 576                                                         }
 577                                                         $outputDone = true;
 578                                                 }
 579                                         }
 580                                         break;
 581                                 case 3:
 582                                         # This will set $this->mRevision if needed
 583                                         $this->fetchContent();
 584
 585                                         # Are we looking at an old revision
 586                                         if ( $oldid && $this->mRevision ) {
 587                                                 $this->setOldSubtitle( $oldid );
 588
 589                                                 if ( !$this->showDeletedRevisionHeader() ) {
 590                                                         wfDebug( __METHOD__ . ": cannot view deleted revision\n" );
 591                                                         wfProfileOut( __METHOD__ );
 592                                                         return;
 593                                                 }
 594                                         }
 595
 596                                         # Ensure that UI elements requiring revision ID have
 597                                         # the correct version information.
 598                                         $outputPage->setRevisionId( $this->getRevIdFetched() );
 599                                         # Preload timestamp to avoid a DB hit
 600                                         $outputPage->setRevisionTimestamp( $this->getTimestamp() );
 601
 602                                         # Pages containing custom CSS or JavaScript get special treatment
 603                                         if ( $this->getTitle()->isCssOrJsPage() || $this->getTitle()->isCssJsSubpage() ) {
 604                                                 wfDebug( __METHOD__ . ": showing CSS/JS source\n" );
 605                                                 $this->showCssOrJsPage();
 606                                                 $outputDone = true;
 607                                         } elseif( !wfRunHooks( 'ArticleViewCustom', array( $this->mContent, $this->getTitle(), $outputPage ) ) ) {
 608                                                 # Allow extensions do their own custom view for certain pages
 609                                                 $outputDone = true;
 610                                         } else {
 611                                                 $text = $this->getContent();
 612                                                 $rt = Title::newFromRedirectArray( $text );
 613                                                 if ( $rt ) {
 614                                                         wfDebug( __METHOD__ . ": showing redirect=no page\n" );
 615                                                         # Viewing a redirect page (e.g. with parameter redirect=no)
 616                                                         $outputPage->addHTML( $this->viewRedirect( $rt ) );
 617                                                         # Parse just to get categories, displaytitle, etc.
 618                                                         $this->mParserOutput = $wgParser->parse( $text, $this->getTitle(), $parserOptions );
 619                                                         $outputPage->addParserOutputNoText( $this->mParserOutput );
 620                                                         $outputDone = true;
 621                                                 }
 622                                         }
 623                                         break;
 624                                 case 4:
 625                                         # Run the parse, protected by a pool counter
 626                                         wfDebug( __METHOD__ . ": doing uncached parse\n" );
 627
 628                                         $poolArticleView = new PoolWorkArticleView( $this, $parserOptions,
 629                                                 $this->getRevIdFetched(), $useParserCache, $this->getContent() );
 630
 631                                         if ( !$poolArticleView->execute() ) {
 632                                                 $error = $poolArticleView->getError();
 633                                                 if ( $error ) {
 634                                                         $outputPage->clearHTML(); // for release() errors
 635                                                         $outputPage->enableClientCache( false );
 636                                                         $outputPage->setRobotPolicy( 'noindex,nofollow' );
 637
 638                                                         $errortext = $error->getWikiText( false, 'view-pool-error' );
 639                                                         $outputPage->addWikiText( '<div class="errorbox">' . $errortext . '</div>' );
 640                                                 }
 641                                                 # Connection or timeout error
 642                                                 wfProfileOut( __METHOD__ );
 643                                                 return;
 644                                         }
 645
 646                                         $this->mParserOutput = $poolArticleView->getParserOutput();
 647                                         $outputPage->addParserOutput( $this->mParserOutput );
 648
 649                                         # Don't cache a dirty ParserOutput object
 650                                         if ( $poolArticleView->getIsDirty() ) {
 651                                                 $outputPage->setSquidMaxage( 0 );
 652                                                 $outputPage->addHTML( "<!-- parser cache is expired, sending anyway due to pool overload-->\n" );
 653                                         }
 654
 655                                         $outputDone = true;
 656                                         break;
 657                                 # Should be unreachable, but just in case...
 658                                 default:
 659                                         break 2;
 660                         }
 661                 }
 662
 663                 # Get the ParserOutput actually *displayed* here.
 664                 # Note that $this->mParserOutput is the *current* version output.
 665                 $pOutput = ( $outputDone instanceof ParserOutput )
 666                         ? $outputDone // object fetched by hook
 667                         : $this->mParserOutput;
 668
 669                 # Adjust title for main page & pages with displaytitle
 670                 if ( $pOutput ) {
 671                         $this->adjustDisplayTitle( $pOutput );
 672                 }
 673
 674                 # For the main page, overwrite the <title> element with the con-
 675                 # tents of 'pagetitle-view-mainpage' instead of the default (if
 676                 # that's not empty).
 677                 # This message always exists because it is in the i18n files
 678                 if ( $this->getTitle()->isMainPage() ) {
 679                         $msg = wfMessage( 'pagetitle-view-mainpage' )->inContentLanguage();
 680                         if ( !$msg->isDisabled() ) {
 681                                 $outputPage->setHTMLTitle( $msg->title( $this->getTitle() )->text() );
 682                         }
 683                 }
 684
 685                 # Check for any __NOINDEX__ tags on the page using $pOutput
 686                 $policy = $this->getRobotPolicy( 'view', $pOutput );
 687                 $outputPage->setIndexPolicy( $policy['index'] );
 688                 $outputPage->setFollowPolicy( $policy['follow'] );
 689
 690                 $this->showViewFooter();
 691                 $this->mPage->doViewUpdates( $user );
 692
 693                 wfProfileOut( __METHOD__ );
 694         }
 695
 696         /**
 697          * Adjust title for pages with displaytitle, -{T|}- or language conversion
 698          * @param $pOutput ParserOutput
 699          */
 700         public function adjustDisplayTitle( ParserOutput $pOutput ) {
 701                 # Adjust the title if it was set by displaytitle, -{T|}- or language conversion
 702                 $titleText = $pOutput->getTitleText();
 703                 if ( strval( $titleText ) !== '' ) {
 704                         $this->getContext()->getOutput()->setPageTitle( $titleText );
 705                 }
 706         }
 707
 708         /**
 709          * Show a diff page according to current request variables. For use within
 710          * Article::view() only, other callers should use the DifferenceEngine class.
 711          */
 712         public function showDiffPage() {
 713                 $request = $this->getContext()->getRequest();
 714                 $user = $this->getContext()->getUser();
 715                 $diff = $request->getVal( 'diff' );
 716                 $rcid = $request->getVal( 'rcid' );
 717                 $diffOnly = $request->getBool( 'diffonly', $user->getOption( 'diffonly' ) );
 718                 $purge = $request->getVal( 'action' ) == 'purge';
 719                 $unhide = $request->getInt( 'unhide' ) == 1;
 720                 $oldid = $this->getOldID();
 721
 722                 $de = new DifferenceEngine( $this->getContext(), $oldid, $diff, $rcid, $purge, $unhide );
 723                 // DifferenceEngine directly fetched the revision:
 724                 $this->mRevIdFetched = $de->mNewid;
 725                 $de->showDiffPage( $diffOnly );
 726
 727                 if ( $diff == 0 || $diff == $this->mPage->getLatest() ) {
 728                         # Run view updates for current revision only
 729                         $this->mPage->doViewUpdates( $user );
 730                 }
 731         }
 732
 733         /**
 734          * Show a page view for a page formatted as CSS or JavaScript. To be called by
 735          * Article::view() only.
 736          *
 737          * This is hooked by SyntaxHighlight_GeSHi to do syntax highlighting of these
 738          * page views.
 739          */
 740         protected function showCssOrJsPage() {
 741                 $dir = $this->getContext()->getLanguage()->getDir();
 742                 $lang = $this->getContext()->getLanguage()->getCode();
 743
 744                 $outputPage = $this->getContext()->getOutput();
 745                 $outputPage->wrapWikiMsg( "<div id='mw-clearyourcache' lang='$lang' dir='$dir' class='mw-content-$dir'>\n$1\n</div>",
 746                         'clearyourcache' );
 747
 748                 // Give hooks a chance to customise the output
 749                 if ( wfRunHooks( 'ShowRawCssJs', array( $this->mContent, $this->getTitle(), $outputPage ) ) ) {
 750                         // Wrap the whole lot in a <pre> and don't parse
 751                         $m = array();
 752                         preg_match( '!\.(css|js)$!u', $this->getTitle()->getText(), $m );
 753                         $outputPage->addHTML( "<pre class=\"mw-code mw-{$m[1]}\" dir=\"ltr\">\n" );
 754                         $outputPage->addHTML( htmlspecialchars( $this->mContent ) );
 755                         $outputPage->addHTML( "\n</pre>\n" );
 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 $wgArticleRobotPolicies, $wgNamespaceRobotPolicies, $wgDefaultRobotPolicy;
 768
 769                 $ns = $this->getTitle()->getNamespace();
 770
 771                 if ( $ns == NS_USER || $ns == NS_USER_TALK ) {
 772                         # Don't index user and user talk pages for blocked users (bug 11443)
 773                         if ( !$this->getTitle()->isSubpage() ) {
 774                                 if ( Block::newFromTarget( null, $this->getTitle()->getText() ) instanceof Block ) {
 775                                         return array(
 776                                                 'index'  => 'noindex',
 777                                                 'follow' => 'nofollow'
 778                                         );
 779                                 }
 780                         }
 781                 }
 782
 783                 if ( $this->mPage->getID() === 0 || $this->getOldID() ) {
 784                         # Non-articles (special pages etc), and old revisions
 785                         return array(
 786                                 'index'  => 'noindex',
 787                                 'follow' => 'nofollow'
 788                         );
 789                 } elseif ( $this->getContext()->getOutput()->isPrintable() ) {
 790                         # Discourage indexing of printable versions, but encourage following
 791                         return array(
 792                                 'index'  => 'noindex',
 793                                 'follow' => 'follow'
 794                         );
 795                 } elseif ( $this->getContext()->getRequest()->getInt( 'curid' ) ) {
 796                         # For ?curid=x urls, disallow indexing
 797                         return array(
 798                                 'index'  => 'noindex',
 799                                 'follow' => 'follow'
 800                         );
 801                 }
 802
 803                 # Otherwise, construct the policy based on the various config variables.
 804                 $policy = self::formatRobotPolicy( $wgDefaultRobotPolicy );
 805
 806                 if ( isset( $wgNamespaceRobotPolicies[$ns] ) ) {
 807                         # Honour customised robot policies for this namespace
 808                         $policy = array_merge(
 809                                 $policy,
 810                                 self::formatRobotPolicy( $wgNamespaceRobotPolicies[$ns] )
 811                         );
 812                 }
 813                 if ( $this->getTitle()->canUseNoindex() && is_object( $pOutput ) && $pOutput->getIndexPolicy() ) {
 814                         # __INDEX__ and __NOINDEX__ magic words, if allowed. Incorporates
 815                         # a final sanity check that we have really got the parser output.
 816                         $policy = array_merge(
 817                                 $policy,
 818                                 array( 'index' => $pOutput->getIndexPolicy() )
 819                         );
 820                 }
 821
 822                 if ( isset( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] ) ) {
 823                         # (bug 14900) site config can override user-defined __INDEX__ or __NOINDEX__
 824                         $policy = array_merge(
 825                                 $policy,
 826                                 self::formatRobotPolicy( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] )
 827                         );
 828                 }
 829
 830                 return $policy;
 831         }
 832
 833         /**
 834          * Converts a String robot policy into an associative array, to allow
 835          * merging of several policies using array_merge().
 836          * @param $policy Mixed, returns empty array on null/false/'', transparent
 837          *            to already-converted arrays, converts String.
 838          * @return Array: 'index' => \<indexpolicy\>, 'follow' => \<followpolicy\>
 839          */
 840         public static function formatRobotPolicy( $policy ) {
 841                 if ( is_array( $policy ) ) {
 842                         return $policy;
 843                 } elseif ( !$policy ) {
 844                         return array();
 845                 }
 846
 847                 $policy = explode( ',', $policy );
 848                 $policy = array_map( 'trim', $policy );
 849
 850                 $arr = array();
 851                 foreach ( $policy as $var ) {
 852                         if ( in_array( $var, array( 'index', 'noindex' ) ) ) {
 853                                 $arr['index'] = $var;
 854                         } elseif ( in_array( $var, array( 'follow', 'nofollow' ) ) ) {
 855                                 $arr['follow'] = $var;
 856                         }
 857                 }
 858
 859                 return $arr;
 860         }
 861
 862         /**
 863          * If this request is a redirect view, send "redirected from" subtitle to
 864          * the output. Returns true if the header was needed, false if this is not
 865          * a redirect view. Handles both local and remote redirects.
 866          *
 867          * @return boolean
 868          */
 869         public function showRedirectedFromHeader() {
 870                 global $wgRedirectSources;
 871                 $outputPage = $this->getContext()->getOutput();
 872
 873                 $rdfrom = $this->getContext()->getRequest()->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                                 $outputPage->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                                         $outputPage->addInlineScript( "redirectToFragment(\"$fragment\");" );
 892                                 }
 893
 894                                 // Add a <link rel="canonical"> tag
 895                                 $outputPage->addLink( array( 'rel' => 'canonical',
 896                                         'href' => $this->getTitle()->getLocalURL() )
 897                                 );
 898
 899                                 // Tell the output object that the user arrived at this article through a redirect
 900                                 $outputPage->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                                 $outputPage->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                 if ( $this->getTitle()->isTalkPage() ) {
 924                         if ( !wfMessage( 'talkpageheader' )->isDisabled() ) {
 925                                 $this->getContext()->getOutput()->wrapWikiMsg( "<div class=\"mw-talkpageheader\">\n$1\n</div>", array( 'talkpageheader' ) );
 926                         }
 927                 }
 928         }
 929
 930         /**
 931          * Show the footer section of an ordinary page view
 932          */
 933         public function showViewFooter() {
 934                 # check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
 935                 if ( $this->getTitle()->getNamespace() == NS_USER_TALK && IP::isValid( $this->getTitle()->getText() ) ) {
 936                         $this->getContext()->getOutput()->addWikiMsg( 'anontalkpagetext' );
 937                 }
 938
 939                 # If we have been passed an &rcid= parameter, we want to give the user a
 940                 # chance to mark this new article as patrolled.
 941                 $this->showPatrolFooter();
 942
 943                 wfRunHooks( 'ArticleViewFooter', array( $this ) );
 944
 945         }
 946
 947         /**
 948          * If patrol is possible, output a patrol UI box. This is called from the
 949          * footer section of ordinary page views. If patrol is not possible or not
 950          * desired, does nothing.
 951          */
 952         public function showPatrolFooter() {
 953                 $request = $this->getContext()->getRequest();
 954                 $outputPage = $this->getContext()->getOutput();
 955                 $user = $this->getContext()->getUser();
 956                 $rcid = $request->getVal( 'rcid' );
 957
 958                 if ( !$rcid || !$this->getTitle()->quickUserCan( 'patrol', $user ) ) {
 959                         return;
 960                 }
 961
 962                 $token = $user->getEditToken( $rcid );
 963                 $outputPage->preventClickjacking();
 964
 965                 $link = Linker::linkKnown(
 966                         $this->getTitle(),
 967                         wfMessage( 'markaspatrolledtext' )->escaped(),
 968                         array(),
 969                         array(
 970                                 'action' => 'markpatrolled',
 971                                 'rcid' => $rcid,
 972                                 'token' => $token,
 973                         )
 974                 );
 975
 976                 $outputPage->addHTML(
 977                         "<div class='patrollink'>" .
 978                                 wfMessage( 'markaspatrolledlink' )->rawParams( $link )->escaped() .
 979                         '</div>'
 980                 );
 981         }
 982
 983         /**
 984          * Show the error text for a missing article. For articles in the MediaWiki
 985          * namespace, show the default message text. To be called from Article::view().
 986          */
 987         public function showMissingArticle() {
 988                 global $wgSend404Code;
 989                 $outputPage = $this->getContext()->getOutput();
 990
 991                 # Show info in user (talk) namespace. Does the user exist? Is he blocked?
 992                 if ( $this->getTitle()->getNamespace() == NS_USER || $this->getTitle()->getNamespace() == NS_USER_TALK ) {
 993                         $parts = explode( '/', $this->getTitle()->getText() );
 994                         $rootPart = $parts[0];
 995                         $user = User::newFromName( $rootPart, false /* allow IP users*/ );
 996                         $ip = User::isIP( $rootPart );
 997
 998                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
 999                                 $outputPage->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n\$1\n</div>",
1000                                         array( 'userpage-userdoesnotexist-view', wfEscapeWikiText( $rootPart ) ) );
1001                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1002                                 LogEventsList::showLogExtract(
1003                                         $outputPage,
1004                                         'block',
1005                                         $user->getUserPage(),
1006                                         '',
1007                                         array(
1008                                                 'lim' => 1,
1009                                                 'showIfEmpty' => false,
1010                                                 'msgKey' => array(
1011                                                         'blocked-notice-logextract',
1012                                                         $user->getName() # Support GENDER in notice
1013                                                 )
1014                                         )
1015                                 );
1016                         }
1017                 }
1018
1019                 wfRunHooks( 'ShowMissingArticle', array( $this ) );
1020
1021                 # Show delete and move logs
1022                 LogEventsList::showLogExtract( $outputPage, array( 'delete', 'move' ), $this->getTitle(), '',
1023                         array(  'lim' => 10,
1024                                 'conds' => array( "log_action != 'revision'" ),
1025                                 'showIfEmpty' => false,
1026                                 'msgKey' => array( 'moveddeleted-notice' ) )
1027                 );
1028
1029                 if ( !$this->mPage->hasViewableContent() && $wgSend404Code ) {
1030                         // If there's no backing content, send a 404 Not Found
1031                         // for better machine handling of broken links.
1032                         $this->getContext()->getRequest()->response()->header( "HTTP/1.1 404 Not Found" );
1033                 }
1034
1035                 $hookResult = wfRunHooks( 'BeforeDisplayNoArticleText', array( $this ) );
1036
1037                 if ( ! $hookResult ) {
1038                         return;
1039                 }
1040
1041                 # Show error message
1042                 $oldid = $this->getOldID();
1043                 if ( $oldid ) {
1044                         $text = wfMessage( 'missing-revision', $oldid )->plain();
1045                 } elseif ( $this->getTitle()->getNamespace() === NS_MEDIAWIKI ) {
1046                         // Use the default message text
1047                         $text = $this->getTitle()->getDefaultMessageText();
1048                 } elseif ( $this->getTitle()->quickUserCan( 'create', $this->getContext()->getUser() )
1049                         && $this->getTitle()->quickUserCan( 'edit', $this->getContext()->getUser() )
1050                 ) {
1051                         $text = wfMessage( 'noarticletext' )->plain();
1052                 } else {
1053                         $text = wfMessage( 'noarticletext-nopermission' )->plain();
1054                 }
1055                 $text = "<div class='noarticletext'>\n$text\n</div>";
1056
1057                 $outputPage->addWikiText( $text );
1058         }
1059
1060         /**
1061          * If the revision requested for view is deleted, check permissions.
1062          * Send either an error message or a warning header to the output.
1063          *
1064          * @return boolean true if the view is allowed, false if not.
1065          */
1066         public function showDeletedRevisionHeader() {
1067                 if ( !$this->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1068                         // Not deleted
1069                         return true;
1070                 }
1071
1072                 $outputPage = $this->getContext()->getOutput();
1073                 $user = $this->getContext()->getUser();
1074                 // If the user is not allowed to see it...
1075                 if ( !$this->mRevision->userCan( Revision::DELETED_TEXT, $user ) ) {
1076                         $outputPage->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1077                                 'rev-deleted-text-permission' );
1078
1079                         return false;
1080                 // If the user needs to confirm that they want to see it...
1081                 } elseif ( $this->getContext()->getRequest()->getInt( 'unhide' ) != 1 ) {
1082                         # Give explanation and add a link to view the revision...
1083                         $oldid = intval( $this->getOldID() );
1084                         $link = $this->getTitle()->getFullUrl( "oldid={$oldid}&unhide=1" );
1085                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1086                                 'rev-suppressed-text-unhide' : 'rev-deleted-text-unhide';
1087                         $outputPage->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1088                                 array( $msg, $link ) );
1089
1090                         return false;
1091                 // We are allowed to see...
1092                 } else {
1093                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1094                                 'rev-suppressed-text-view' : 'rev-deleted-text-view';
1095                         $outputPage->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", $msg );
1096
1097                         return true;
1098                 }
1099         }
1100
1101         /**
1102          * Generate the navigation links when browsing through an article revisions
1103          * It shows the information as:
1104          *   Revision as of \<date\>; view current revision
1105          *   \<- Previous version | Next Version -\>
1106          *
1107          * @param $oldid int: revision ID of this article revision
1108          */
1109         public function setOldSubtitle( $oldid = 0 ) {
1110                 if ( !wfRunHooks( 'DisplayOldSubtitle', array( &$this, &$oldid ) ) ) {
1111                         return;
1112                 }
1113
1114                 $unhide = $this->getContext()->getRequest()->getInt( 'unhide' ) == 1;
1115
1116                 # Cascade unhide param in links for easy deletion browsing
1117                 $extraParams = array();
1118                 if ( $unhide ) {
1119                         $extraParams['unhide'] = 1;
1120                 }
1121
1122                 if ( $this->mRevision && $this->mRevision->getId() === $oldid ) {
1123                         $revision = $this->mRevision;
1124                 } else {
1125                         $revision = Revision::newFromId( $oldid );
1126                 }
1127
1128                 $timestamp = $revision->getTimestamp();
1129
1130                 $current = ( $oldid == $this->mPage->getLatest() );
1131                 $language = $this->getContext()->getLanguage();
1132                 $user = $this->getContext()->getUser();
1133
1134                 $td = $language->userTimeAndDate( $timestamp, $user );
1135                 $tddate = $language->userDate( $timestamp, $user );
1136                 $tdtime = $language->userTime( $timestamp, $user );
1137
1138                 # Show user links if allowed to see them. If hidden, then show them only if requested...
1139                 $userlinks = Linker::revUserTools( $revision, !$unhide );
1140
1141                 $infomsg = $current && !wfMessage( 'revision-info-current' )->isDisabled()
1142                         ? 'revision-info-current'
1143                         : 'revision-info';
1144
1145                 $outputPage = $this->getContext()->getOutput();
1146                 $outputPage->addSubtitle( "<div id=\"mw-{$infomsg}\">" . wfMessage( $infomsg,
1147                         $td )->rawParams( $userlinks )->params( $revision->getID(), $tddate,
1148                         $tdtime, $revision->getUser() )->parse() . "</div>" );
1149
1150                 $lnk = $current
1151                         ? wfMessage( 'currentrevisionlink' )->escaped()
1152                         : Linker::linkKnown(
1153                                 $this->getTitle(),
1154                                 wfMessage( 'currentrevisionlink' )->escaped(),
1155                                 array(),
1156                                 $extraParams
1157                         );
1158                 $curdiff = $current
1159                         ? wfMessage( 'diff' )->escaped()
1160                         : Linker::linkKnown(
1161                                 $this->getTitle(),
1162                                 wfMessage( 'diff' )->escaped(),
1163                                 array(),
1164                                 array(
1165                                         'diff' => 'cur',
1166                                         'oldid' => $oldid
1167                                 ) + $extraParams
1168                         );
1169                 $prev = $this->getTitle()->getPreviousRevisionID( $oldid ) ;
1170                 $prevlink = $prev
1171                         ? Linker::linkKnown(
1172                                 $this->getTitle(),
1173                                 wfMessage( 'previousrevision' )->escaped(),
1174                                 array(),
1175                                 array(
1176                                         'direction' => 'prev',
1177                                         'oldid' => $oldid
1178                                 ) + $extraParams
1179                         )
1180                         : wfMessage( 'previousrevision' )->escaped();
1181                 $prevdiff = $prev
1182                         ? Linker::linkKnown(
1183                                 $this->getTitle(),
1184                                 wfMessage( 'diff' )->escaped(),
1185                                 array(),
1186                                 array(
1187                                         'diff' => 'prev',
1188                                         'oldid' => $oldid
1189                                 ) + $extraParams
1190                         )
1191                         : wfMessage( 'diff' )->escaped();
1192                 $nextlink = $current
1193                         ? wfMessage( 'nextrevision' )->escaped()
1194                         : Linker::linkKnown(
1195                                 $this->getTitle(),
1196                                 wfMessage( 'nextrevision' )->escaped(),
1197                                 array(),
1198                                 array(
1199                                         'direction' => 'next',
1200                                         'oldid' => $oldid
1201                                 ) + $extraParams
1202                         );
1203                 $nextdiff = $current
1204                         ? wfMessage( 'diff' )->escaped()
1205                         : Linker::linkKnown(
1206                                 $this->getTitle(),
1207                                 wfMessage( 'diff' )->escaped(),
1208                                 array(),
1209                                 array(
1210                                         'diff' => 'next',
1211                                         'oldid' => $oldid
1212                                 ) + $extraParams
1213                         );
1214
1215                 $cdel = Linker::getRevDeleteLink( $user, $revision, $this->getTitle() );
1216                 if ( $cdel !== '' ) {
1217                         $cdel .= ' ';
1218                 }
1219
1220                 $outputPage->addSubtitle( "<div id=\"mw-revision-nav\">" . $cdel .
1221                         wfMessage( 'revision-nav' )->rawParams(
1222                                 $prevdiff, $prevlink, $lnk, $curdiff, $nextlink, $nextdiff
1223                         )->escaped() . "</div>" );
1224         }
1225
1226         /**
1227          * View redirect
1228          *
1229          * @param $target Title|Array of destination(s) to redirect
1230          * @param $appendSubtitle Boolean [optional]
1231          * @param $forceKnown Boolean: should the image be shown as a bluelink regardless of existence?
1232          * @return string containing HMTL with redirect link
1233          */
1234         public function viewRedirect( $target, $appendSubtitle = true, $forceKnown = false ) {
1235                 global $wgStylePath;
1236
1237                 if ( !is_array( $target ) ) {
1238                         $target = array( $target );
1239                 }
1240
1241                 $lang = $this->getTitle()->getPageLanguage();
1242                 $imageDir = $lang->getDir();
1243
1244                 if ( $appendSubtitle ) {
1245                         $out = $this->getContext()->getOutput();
1246                         $out->addSubtitle( wfMessage( 'redirectpagesub' )->escaped() );
1247                 }
1248
1249                 // the loop prepends the arrow image before the link, so the first case needs to be outside
1250
1251                 /**
1252                  * @var $title Title
1253                  */
1254                 $title = array_shift( $target );
1255
1256                 if ( $forceKnown ) {
1257                         $link = Linker::linkKnown( $title, htmlspecialchars( $title->getFullText() ) );
1258                 } else {
1259                         $link = Linker::link( $title, htmlspecialchars( $title->getFullText() ) );
1260                 }
1261
1262                 $nextRedirect = $wgStylePath . '/common/images/nextredirect' . $imageDir . '.png';
1263                 $alt = $lang->isRTL() ? '←' : '→';
1264                 // Automatically append redirect=no to each link, since most of them are redirect pages themselves.
1265                 foreach ( $target as $rt ) {
1266                         $link .= Html::element( 'img', array( 'src' => $nextRedirect, 'alt' => $alt ) );
1267                         if ( $forceKnown ) {
1268                                 $link .= Linker::linkKnown( $rt, htmlspecialchars( $rt->getFullText(), array(), array( 'redirect' => 'no' ) ) );
1269                         } else {
1270                                 $link .= Linker::link( $rt, htmlspecialchars( $rt->getFullText() ), array(), array( 'redirect' => 'no' ) );
1271                         }
1272                 }
1273
1274                 $imageUrl = $wgStylePath . '/common/images/redirect' . $imageDir . '.png';
1275                 return '<div class="redirectMsg">' .
1276                         Html::element( 'img', array( 'src' => $imageUrl, 'alt' => '#REDIRECT' ) ) .
1277                         '<span class="redirectText">' . $link . '</span></div>';
1278         }
1279
1280         /**
1281          * Handle action=render
1282          */
1283         public function render() {
1284                 $this->getContext()->getOutput()->setArticleBodyOnly( true );
1285                 $this->view();
1286         }
1287
1288         /**
1289          * action=protect handler
1290          */
1291         public function protect() {
1292                 $form = new ProtectionForm( $this );
1293                 $form->execute();
1294         }
1295
1296         /**
1297          * action=unprotect handler (alias)
1298          */
1299         public function unprotect() {
1300                 $this->protect();
1301         }
1302
1303         /**
1304          * UI entry point for page deletion
1305          */
1306         public function delete() {
1307                 # This code desperately needs to be totally rewritten
1308
1309                 $title = $this->getTitle();
1310                 $user = $this->getContext()->getUser();
1311
1312                 # Check permissions
1313                 $permission_errors = $title->getUserPermissionsErrors( 'delete', $user );
1314                 if ( count( $permission_errors ) ) {
1315                         throw new PermissionsError( 'delete', $permission_errors );
1316                 }
1317
1318                 # Read-only check...
1319                 if ( wfReadOnly() ) {
1320                         throw new ReadOnlyError;
1321                 }
1322
1323                 # Better double-check that it hasn't been deleted yet!
1324                 $this->mPage->loadPageData( 'fromdbmaster' );
1325                 if ( !$this->mPage->exists() ) {
1326                         $deleteLogPage = new LogPage( 'delete' );
1327                         $outputPage = $this->getContext()->getOutput();
1328                         $outputPage->setPageTitle( wfMessage( 'cannotdelete-title', $title->getPrefixedText() ) );
1329                         $outputPage->wrapWikiMsg( "<div class=\"error mw-error-cannotdelete\">\n$1\n</div>",
1330                                         array( 'cannotdelete', wfEscapeWikiText( $title->getPrefixedText() ) )
1331                                 );
1332                         $outputPage->addHTML(
1333                                 Xml::element( 'h2', null, $deleteLogPage->getName()->text() )
1334                         );
1335                         LogEventsList::showLogExtract(
1336                                 $outputPage,
1337                                 'delete',
1338                                 $title
1339                         );
1340
1341                         return;
1342                 }
1343
1344                 $request = $this->getContext()->getRequest();
1345                 $deleteReasonList = $request->getText( 'wpDeleteReasonList', 'other' );
1346                 $deleteReason = $request->getText( 'wpReason' );
1347
1348                 if ( $deleteReasonList == 'other' ) {
1349                         $reason = $deleteReason;
1350                 } elseif ( $deleteReason != '' ) {
1351                         // Entry from drop down menu + additional comment
1352                         $colonseparator = wfMessage( 'colon-separator' )->inContentLanguage()->text();
1353                         $reason = $deleteReasonList . $colonseparator . $deleteReason;
1354                 } else {
1355                         $reason = $deleteReasonList;
1356                 }
1357
1358                 if ( $request->wasPosted() && $user->matchEditToken( $request->getVal( 'wpEditToken' ),
1359                         array( 'delete', $this->getTitle()->getPrefixedText() ) ) )
1360                 {
1361                         # Flag to hide all contents of the archived revisions
1362                         $suppress = $request->getVal( 'wpSuppress' ) && $user->isAllowed( 'suppressrevision' );
1363
1364                         $this->doDelete( $reason, $suppress );
1365
1366                         if ( $user->isLoggedIn() && $request->getCheck( 'wpWatch' ) != $user->isWatched( $title ) ) {
1367                                 if ( $request->getCheck( 'wpWatch' ) ) {
1368                                         WatchAction::doWatch( $title, $user );
1369                                 } else {
1370                                         WatchAction::doUnwatch( $title, $user );
1371                                 }
1372                         }
1373
1374                         return;
1375                 }
1376
1377                 // Generate deletion reason
1378                 $hasHistory = false;
1379                 if ( !$reason ) {
1380                         $reason = $this->generateReason( $hasHistory );
1381                 }
1382
1383                 // If the page has a history, insert a warning
1384                 if ( $hasHistory ) {
1385                         $revisions = $this->mTitle->estimateRevisionCount();
1386                         // @todo FIXME: i18n issue/patchwork message
1387                         $this->getContext()->getOutput()->addHTML( '<strong class="mw-delete-warning-revisions">' .
1388                                 wfMessage( 'historywarning' )->numParams( $revisions )->parse() .
1389                                 wfMessage( 'word-separator' )->plain() . Linker::linkKnown( $title,
1390                                         wfMessage( 'history' )->escaped(),
1391                                         array( 'rel' => 'archives' ),
1392                                         array( 'action' => 'history' ) ) .
1393                                 '</strong>'
1394                         );
1395
1396                         if ( $this->mTitle->isBigDeletion() ) {
1397                                 global $wgDeleteRevisionsLimit;
1398                                 $this->getContext()->getOutput()->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n",
1399                                         array( 'delete-warning-toobig', $this->getContext()->getLanguage()->formatNum( $wgDeleteRevisionsLimit ) ) );
1400                         }
1401                 }
1402
1403                 $this->confirmDelete( $reason );
1404         }
1405
1406         /**
1407          * Output deletion confirmation dialog
1408          * @todo FIXME: Move to another file?
1409          * @param $reason String: prefilled reason
1410          */
1411         public function confirmDelete( $reason ) {
1412                 wfDebug( "Article::confirmDelete\n" );
1413
1414                 $outputPage = $this->getContext()->getOutput();
1415                 $outputPage->setPageTitle( wfMessage( 'delete-confirm', $this->getTitle()->getPrefixedText() ) );
1416                 $outputPage->addBacklinkSubtitle( $this->getTitle() );
1417                 $outputPage->setRobotPolicy( 'noindex,nofollow' );
1418                 $outputPage->addWikiMsg( 'confirmdeletetext' );
1419
1420                 wfRunHooks( 'ArticleConfirmDelete', array( $this, $outputPage, &$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( wfMessage( 'revdelete-suppress' )->text(),
1429                                                         'wpSuppress', 'wpSuppress', false, array( 'tabindex' => '4' ) ) .
1430                                         "</strong></td>
1431                                 </tr>";
1432                 } else {
1433                         $suppress = '';
1434                 }
1435                 $checkWatch = $user->getBoolOption( 'watchdeletion' ) || $user->isWatched( $this->getTitle() );
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, wfMessage( 'delete-legend' )->escaped() ) .
1441                         Xml::openElement( 'table', array( 'id' => 'mw-deleteconfirm-table' ) ) .
1442                         "<tr id=\"wpDeleteReasonListRow\">
1443                                 <td class='mw-label'>" .
1444                                         Xml::label( wfMessage( 'deletecomment' )->text(), 'wpDeleteReasonList' ) .
1445                                 "</td>
1446                                 <td class='mw-input'>" .
1447                                         Xml::listDropDown( 'wpDeleteReasonList',
1448                                                 wfMessage( 'deletereason-dropdown' )->inContentLanguage()->text(),
1449                                                 wfMessage( 'deletereasonotherlist' )->inContentLanguage()->text(), '', 'wpReasonDropDown', 1 ) .
1450                                 "</td>
1451                         </tr>
1452                         <tr id=\"wpDeleteReasonRow\">
1453                                 <td class='mw-label'>" .
1454                                         Xml::label( wfMessage( 'deleteotherreason' )->text(), '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( wfMessage( 'watchthis' )->text(),
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( wfMessage( 'deletepage' )->text(),
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                                         wfMessage( 'delete-edit-reasonlist' )->escaped(),
1498                                         array(),
1499                                         array( 'action' => 'edit' )
1500                                 );
1501                                 $form .= '<p class="mw-delete-editreasons">' . $link . '</p>';
1502                         }
1503
1504                 $outputPage->addHTML( $form );
1505
1506                 $deleteLogPage = new LogPage( 'delete' );
1507                 $outputPage->addHTML( Xml::element( 'h2', null, $deleteLogPage->getName()->text() ) );
1508                 LogEventsList::showLogExtract( $outputPage, 'delete',
1509                         $this->getTitle()
1510                 );
1511         }
1512
1513         /**
1514          * Perform a deletion and output success or failure messages
1515          * @param $reason
1516          * @param $suppress bool
1517          */
1518         public function doDelete( $reason, $suppress = false ) {
1519                 $error = '';
1520                 $outputPage = $this->getContext()->getOutput();
1521                 $status = $this->mPage->doDeleteArticleReal( $reason, $suppress, 0, true, $error );
1522                 if ( $status->isGood() ) {
1523                         $deleted = $this->getTitle()->getPrefixedText();
1524
1525                         $outputPage->setPageTitle( wfMessage( 'actioncomplete' ) );
1526                         $outputPage->setRobotPolicy( 'noindex,nofollow' );
1527
1528                         $loglink = '[[Special:Log/delete|' . wfMessage( 'deletionlog' )->text() . ']]';
1529
1530                         $outputPage->addWikiMsg( 'deletedtext', wfEscapeWikiText( $deleted ), $loglink );
1531                         $outputPage->returnToMain( false );
1532                 } else {
1533                         $outputPage->setPageTitle( wfMessage( 'cannotdelete-title', $this->getTitle()->getPrefixedText() ) );
1534                         if ( $error == '' ) {
1535                                 $outputPage->addWikiText(
1536                                         "<div class=\"error mw-error-cannotdelete\">\n" . $status->getWikiText() . "\n</div>"
1537                                 );
1538                                 $deleteLogPage = new LogPage( 'delete' );
1539                                 $outputPage->addHTML( Xml::element( 'h2', null, $deleteLogPage->getName()->text() ) );
1540
1541                                 LogEventsList::showLogExtract(
1542                                         $outputPage,
1543                                         'delete',
1544                                         $this->getTitle()
1545                                 );
1546                         } else {
1547                                 $outputPage->addHTML( $error );
1548                         }
1549                 }
1550         }
1551
1552         /* Caching functions */
1553
1554         /**
1555          * checkLastModified returns true if it has taken care of all
1556          * output to the client that is necessary for this request.
1557          * (that is, it has sent a cached version of the page)
1558          *
1559          * @return boolean true if cached version send, false otherwise
1560          */
1561         protected function tryFileCache() {
1562                 static $called = false;
1563
1564                 if ( $called ) {
1565                         wfDebug( "Article::tryFileCache(): called twice!?\n" );
1566                         return false;
1567                 }
1568
1569                 $called = true;
1570                 if ( $this->isFileCacheable() ) {
1571                         $cache = HTMLFileCache::newFromTitle( $this->getTitle(), 'view' );
1572                         if ( $cache->isCacheGood( $this->mPage->getTouched() ) ) {
1573                                 wfDebug( "Article::tryFileCache(): about to load file\n" );
1574                                 $cache->loadFromFileCache( $this->getContext() );
1575                                 return true;
1576                         } else {
1577                                 wfDebug( "Article::tryFileCache(): starting buffer\n" );
1578                                 ob_start( array( &$cache, 'saveToFileCache' ) );
1579                         }
1580                 } else {
1581                         wfDebug( "Article::tryFileCache(): not cacheable\n" );
1582                 }
1583
1584                 return false;
1585         }
1586
1587         /**
1588          * Check if the page can be cached
1589          * @return bool
1590          */
1591         public function isFileCacheable() {
1592                 $cacheable = false;
1593
1594                 if ( HTMLFileCache::useFileCache( $this->getContext() ) ) {
1595                         $cacheable = $this->mPage->getID()
1596                                 && !$this->mRedirectedFrom && !$this->getTitle()->isRedirect();
1597                         // Extension may have reason to disable file caching on some pages.
1598                         if ( $cacheable ) {
1599                                 $cacheable = wfRunHooks( 'IsFileCacheable', array( &$this ) );
1600                         }
1601                 }
1602
1603                 return $cacheable;
1604         }
1605
1606         /**#@-*/
1607
1608         /**
1609          * Lightweight method to get the parser output for a page, checking the parser cache
1610          * and so on. Doesn't consider most of the stuff that WikiPage::view is forced to
1611          * consider, so it's not appropriate to use there.
1612          *
1613          * @since 1.16 (r52326) for LiquidThreads
1614          *
1615          * @param $oldid mixed integer Revision ID or null
1616          * @param $user User The relevant user
1617          * @return ParserOutput or false if the given revsion ID is not found
1618          */
1619         public function getParserOutput( $oldid = null, User $user = null ) {
1620                 if ( $user === null ) {
1621                         $parserOptions = $this->getParserOptions();
1622                 } else {
1623                         $parserOptions = $this->mPage->makeParserOptions( $user );
1624                 }
1625
1626                 return $this->mPage->getParserOutput( $parserOptions, $oldid );
1627         }
1628
1629         /**
1630          * Get parser options suitable for rendering the primary article wikitext
1631          * @return ParserOptions
1632          */
1633         public function getParserOptions() {
1634                 if ( !$this->mParserOptions ) {
1635                         $this->mParserOptions = $this->mPage->makeParserOptions( $this->getContext() );
1636                 }
1637                 // Clone to allow modifications of the return value without affecting cache
1638                 return clone $this->mParserOptions;
1639         }
1640
1641         /**
1642          * Sets the context this Article is executed in
1643          *
1644          * @param $context IContextSource
1645          * @since 1.18
1646          */
1647         public function setContext( $context ) {
1648                 $this->mContext = $context;
1649         }
1650
1651         /**
1652          * Gets the context this Article is executed in
1653          *
1654          * @return IContextSource
1655          * @since 1.18
1656          */
1657         public function getContext() {
1658                 if ( $this->mContext instanceof IContextSource ) {
1659                         return $this->mContext;
1660                 } else {
1661                         wfDebug( __METHOD__ . " called and \$mContext is null. Return RequestContext::getMain(); for sanity\n" );
1662                         return RequestContext::getMain();
1663                 }
1664         }
1665
1666         /**
1667          * Info about this page
1668          * @deprecated since 1.19
1669          */
1670         public function info() {
1671                 wfDeprecated( __METHOD__, '1.19' );
1672                 Action::factory( 'info', $this )->show();
1673         }
1674
1675         /**
1676          * Mark this particular edit/page as patrolled
1677          * @deprecated since 1.18
1678          */
1679         public function markpatrolled() {
1680                 wfDeprecated( __METHOD__, '1.18' );
1681                 Action::factory( 'markpatrolled', $this )->show();
1682         }
1683
1684         /**
1685          * Handle action=purge
1686          * @deprecated since 1.19
1687          * @return Action|bool|null false if the action is disabled, null if it is not recognised
1688          */
1689         public function purge() {
1690                 return Action::factory( 'purge', $this )->show();
1691         }
1692
1693         /**
1694          * Handle action=revert
1695          * @deprecated since 1.19
1696          */
1697         public function revert() {
1698                 wfDeprecated( __METHOD__, '1.19' );
1699                 Action::factory( 'revert', $this )->show();
1700         }
1701
1702         /**
1703          * Handle action=rollback
1704          * @deprecated since 1.19
1705          */
1706         public function rollback() {
1707                 wfDeprecated( __METHOD__, '1.19' );
1708                 Action::factory( 'rollback', $this )->show();
1709         }
1710
1711         /**
1712          * User-interface handler for the "watch" action.
1713          * Requires Request to pass a token as of 1.18.
1714          * @deprecated since 1.18
1715          */
1716         public function watch() {
1717                 wfDeprecated( __METHOD__, '1.18' );
1718                 Action::factory( 'watch', $this )->show();
1719         }
1720
1721         /**
1722          * Add this page to the current user's watchlist
1723          *
1724          * This is safe to be called multiple times
1725          *
1726          * @return bool true on successful watch operation
1727          * @deprecated since 1.18
1728          */
1729         public function doWatch() {
1730                 wfDeprecated( __METHOD__, '1.18' );
1731                 return WatchAction::doWatch( $this->getTitle(), $this->getContext()->getUser() );
1732         }
1733
1734         /**
1735          * User interface handler for the "unwatch" action.
1736          * Requires Request to pass a token as of 1.18.
1737          * @deprecated since 1.18
1738          */
1739         public function unwatch() {
1740                 wfDeprecated( __METHOD__, '1.18' );
1741                 Action::factory( 'unwatch', $this )->show();
1742         }
1743
1744         /**
1745          * Stop watching a page
1746          * @return bool true on successful unwatch
1747          * @deprecated since 1.18
1748          */
1749         public function doUnwatch() {
1750                 wfDeprecated( __METHOD__, '1.18' );
1751                 return WatchAction::doUnwatch( $this->getTitle(), $this->getContext()->getUser() );
1752         }
1753
1754         /**
1755          * Output a redirect back to the article.
1756          * This is typically used after an edit.
1757          *
1758          * @deprecated in 1.18; call OutputPage::redirect() directly
1759          * @param $noRedir Boolean: add redirect=no
1760          * @param $sectionAnchor String: section to redirect to, including "#"
1761          * @param $extraQuery String: extra query params
1762          */
1763         public function doRedirect( $noRedir = false, $sectionAnchor = '', $extraQuery = '' ) {
1764                 wfDeprecated( __METHOD__, '1.18' );
1765                 if ( $noRedir ) {
1766                         $query = 'redirect=no';
1767                         if ( $extraQuery ) {
1768                                 $query .= "&$extraQuery";
1769                         }
1770                 } else {
1771                         $query = $extraQuery;
1772                 }
1773
1774                 $this->getContext()->getOutput()->redirect( $this->getTitle()->getFullURL( $query ) . $sectionAnchor );
1775         }
1776
1777         /**
1778          * Use PHP's magic __get handler to handle accessing of
1779          * raw WikiPage fields for backwards compatibility.
1780          *
1781          * @param $fname String Field name
1782          */
1783         public function __get( $fname ) {
1784                 if ( property_exists( $this->mPage, $fname ) ) {
1785                         #wfWarn( "Access to raw $fname field " . __CLASS__ );
1786                         return $this->mPage->$fname;
1787                 }
1788                 trigger_error( 'Inaccessible property via __get(): ' . $fname, E_USER_NOTICE );
1789         }
1790
1791         /**
1792          * Use PHP's magic __set handler to handle setting of
1793          * raw WikiPage fields for backwards compatibility.
1794          *
1795          * @param $fname String Field name
1796          * @param $fvalue mixed New value
1797          */
1798         public function __set( $fname, $fvalue ) {
1799                 if ( property_exists( $this->mPage, $fname ) ) {
1800                         #wfWarn( "Access to raw $fname field of " . __CLASS__ );
1801                         $this->mPage->$fname = $fvalue;
1802                 // Note: extensions may want to toss on new fields
1803                 } elseif ( !in_array( $fname, array( 'mContext', 'mPage' ) ) ) {
1804                         $this->mPage->$fname = $fvalue;
1805                 } else {
1806                         trigger_error( 'Inaccessible property via __set(): ' . $fname, E_USER_NOTICE );
1807                 }
1808         }
1809
1810         /**
1811          * Use PHP's magic __call handler to transform instance calls to
1812          * WikiPage functions for backwards compatibility.
1813          *
1814          * @param $fname String Name of called method
1815          * @param $args Array Arguments to the method
1816          * @return mixed
1817          */
1818         public function __call( $fname, $args ) {
1819                 if ( is_callable( array( $this->mPage, $fname ) ) ) {
1820                         #wfWarn( "Call to " . __CLASS__ . "::$fname; please use WikiPage instead" );
1821                         return call_user_func_array( array( $this->mPage, $fname ), $args );
1822                 }
1823                 trigger_error( 'Inaccessible function via __call(): ' . $fname, E_USER_ERROR );
1824         }
1825
1826         // ****** B/C functions to work-around PHP silliness with __call and references ****** //
1827
1828         /**
1829          * @param $limit array
1830          * @param $expiry array
1831          * @param $cascade bool
1832          * @param $reason string
1833          * @param $user User
1834          * @return Status
1835          */
1836         public function doUpdateRestrictions( array $limit, array $expiry, &$cascade, $reason, User $user ) {
1837                 return $this->mPage->doUpdateRestrictions( $limit, $expiry, $cascade, $reason, $user );
1838         }
1839
1840         /**
1841          * @param $limit array
1842          * @param $reason string
1843          * @param $cascade int
1844          * @param $expiry array
1845          * @return bool
1846          */
1847         public function updateRestrictions( $limit = array(), $reason = '', &$cascade = 0, $expiry = array() ) {
1848                 return $this->mPage->updateRestrictions( $limit, $reason, $cascade, $expiry );
1849         }
1850
1851         /**
1852          * @param $reason string
1853          * @param $suppress bool
1854          * @param $id int
1855          * @param $commit bool
1856          * @param $error string
1857          * @return bool
1858          */
1859         public function doDeleteArticle( $reason, $suppress = false, $id = 0, $commit = true, &$error = '' ) {
1860                 return $this->mPage->doDeleteArticle( $reason, $suppress, $id, $commit, $error );
1861         }
1862
1863         /**
1864          * @param $fromP
1865          * @param $summary
1866          * @param $token
1867          * @param $bot
1868          * @param $resultDetails
1869          * @param $user User
1870          * @return array
1871          */
1872         public function doRollback( $fromP, $summary, $token, $bot, &$resultDetails, User $user = null ) {
1873                 $user = is_null( $user ) ? $this->getContext()->getUser() : $user;
1874                 return $this->mPage->doRollback( $fromP, $summary, $token, $bot, $resultDetails, $user );
1875         }
1876
1877         /**
1878          * @param $fromP
1879          * @param $summary
1880          * @param $bot
1881          * @param $resultDetails
1882          * @param $guser User
1883          * @return array
1884          */
1885         public function commitRollback( $fromP, $summary, $bot, &$resultDetails, User $guser = null ) {
1886                 $guser = is_null( $guser ) ? $this->getContext()->getUser() : $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 }