includes/EditPage.php

   1 <?php
   2 /**
   3  * User interface for page editing.
   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  * The edit page/HTML interface (split from Article)
  25  * The actual database and text munging is still in Article,
  26  * but it should get easier to call those from alternate
  27  * interfaces.
  28  *
  29  * EditPage cares about two distinct titles:
  30  * $this->mContextTitle is the page that forms submit to, links point to,
  31  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  32  * page in the database that is actually being edited. These are
  33  * usually the same, but they are now allowed to be different.
  34  *
  35  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  36  * headaches, which may be fatal.
  37  */
  38 class EditPage {
  39         /**
  40          * Status: Article successfully updated
  41          */
  42         const AS_SUCCESS_UPDATE = 200;
  43
  44         /**
  45          * Status: Article successfully created
  46          */
  47         const AS_SUCCESS_NEW_ARTICLE = 201;
  48
  49         /**
  50          * Status: Article update aborted by a hook function
  51          */
  52         const AS_HOOK_ERROR = 210;
  53
  54         /**
  55          * Status: A hook function returned an error
  56          */
  57         const AS_HOOK_ERROR_EXPECTED = 212;
  58
  59         /**
  60          * Status: User is blocked from editing this page
  61          */
  62         const AS_BLOCKED_PAGE_FOR_USER = 215;
  63
  64         /**
  65          * Status: Content too big (> $wgMaxArticleSize)
  66          */
  67         const AS_CONTENT_TOO_BIG = 216;
  68
  69         /**
  70          * Status: this anonymous user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_ANON = 218;
  73
  74         /**
  75          * Status: this logged in user is not allowed to edit this page
  76          */
  77         const AS_READ_ONLY_PAGE_LOGGED = 219;
  78
  79         /**
  80          * Status: wiki is in readonly mode (wfReadOnly() == true)
  81          */
  82         const AS_READ_ONLY_PAGE = 220;
  83
  84         /**
  85          * Status: rate limiter for action 'edit' was tripped
  86          */
  87         const AS_RATE_LIMITED = 221;
  88
  89         /**
  90          * Status: article was deleted while editing and param wpRecreate == false or form
  91          * was not posted
  92          */
  93         const AS_ARTICLE_WAS_DELETED = 222;
  94
  95         /**
  96          * Status: user tried to create this page, but is not allowed to do that
  97          * ( Title->userCan('create') == false )
  98          */
  99         const AS_NO_CREATE_PERMISSION = 223;
 100
 101         /**
 102          * Status: user tried to create a blank page and wpIgnoreBlankArticle == false
 103          */
 104         const AS_BLANK_ARTICLE = 224;
 105
 106         /**
 107          * Status: (non-resolvable) edit conflict
 108          */
 109         const AS_CONFLICT_DETECTED = 225;
 110
 111         /**
 112          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 113          * editing in his own userspace or talkspace and wpIgnoreBlankSummary == false
 114          */
 115         const AS_SUMMARY_NEEDED = 226;
 116
 117         /**
 118          * Status: user tried to create a new section without content
 119          */
 120         const AS_TEXTBOX_EMPTY = 228;
 121
 122         /**
 123          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 124          */
 125         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessful
 129          */
 130         const AS_END = 231;
 131
 132         /**
 133          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 134          */
 135         const AS_SPAM_ERROR = 232;
 136
 137         /**
 138          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 139          */
 140         const AS_IMAGE_REDIRECT_ANON = 233;
 141
 142         /**
 143          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 144          */
 145         const AS_IMAGE_REDIRECT_LOGGED = 234;
 146
 147         /**
 148          * Status: user tried to modify the content model, but is not allowed to do that
 149          * ( User::isAllowed('editcontentmodel') == false )
 150          */
 151         const AS_NO_CHANGE_CONTENT_MODEL = 235;
 152
 153         /**
 154          * Status: user tried to create self-redirect (redirect to the same article) and
 155          * wpIgnoreSelfRedirect == false
 156          */
 157         const AS_SELF_REDIRECT = 236;
 158
 159         /**
 160          * Status: an error relating to change tagging. Look at the message key for
 161          * more details
 162          */
 163         const AS_CHANGE_TAG_ERROR = 237;
 164
 165         /**
 166          * Status: can't parse content
 167          */
 168         const AS_PARSE_ERROR = 240;
 169
 170         /**
 171          * Status: when changing the content model is disallowed due to
 172          * $wgContentHandlerUseDB being false
 173          */
 174         const AS_CANNOT_USE_CUSTOM_MODEL = 241;
 175
 176         /**
 177          * HTML id and name for the beginning of the edit form.
 178          */
 179         const EDITFORM_ID = 'editform';
 180
 181         /**
 182          * Prefix of key for cookie used to pass post-edit state.
 183          * The revision id edited is added after this
 184          */
 185         const POST_EDIT_COOKIE_KEY_PREFIX = 'PostEditRevision';
 186
 187         /**
 188          * Duration of PostEdit cookie, in seconds.
 189          * The cookie will be removed instantly if the JavaScript runs.
 190          *
 191          * Otherwise, though, we don't want the cookies to accumulate.
 192          * RFC 2109 ( https://www.ietf.org/rfc/rfc2109.txt ) specifies a possible
 193          * limit of only 20 cookies per domain. This still applies at least to some
 194          * versions of IE without full updates:
 195          * https://blogs.msdn.com/b/ieinternals/archive/2009/08/20/wininet-ie-cookie-internals-faq.aspx
 196          *
 197          * A value of 20 minutes should be enough to take into account slow loads and minor
 198          * clock skew while still avoiding cookie accumulation when JavaScript is turned off.
 199          */
 200         const POST_EDIT_COOKIE_DURATION = 1200;
 201
 202         /** @var Article */
 203         public $mArticle;
 204
 205         /** @var Title */
 206         public $mTitle;
 207
 208         /** @var null|Title */
 209         private $mContextTitle = null;
 210
 211         /** @var string */
 212         public $action = 'submit';
 213
 214         /** @var bool */
 215         public $isConflict = false;
 216
 217         /** @var bool */
 218         public $isCssJsSubpage = false;
 219
 220         /** @var bool */
 221         public $isCssSubpage = false;
 222
 223         /** @var bool */
 224         public $isJsSubpage = false;
 225
 226         /** @var bool */
 227         public $isWrongCaseCssJsPage = false;
 228
 229         /** @var bool New page or new section */
 230         public $isNew = false;
 231
 232         /** @var bool */
 233         public $deletedSinceEdit;
 234
 235         /** @var string */
 236         public $formtype;
 237
 238         /** @var bool */
 239         public $firsttime;
 240
 241         /** @var bool|stdClass */
 242         public $lastDelete;
 243
 244         /** @var bool */
 245         public $mTokenOk = false;
 246
 247         /** @var bool */
 248         public $mTokenOkExceptSuffix = false;
 249
 250         /** @var bool */
 251         public $mTriedSave = false;
 252
 253         /** @var bool */
 254         public $incompleteForm = false;
 255
 256         /** @var bool */
 257         public $tooBig = false;
 258
 259         /** @var bool */
 260         public $kblength = false;
 261
 262         /** @var bool */
 263         public $missingComment = false;
 264
 265         /** @var bool */
 266         public $missingSummary = false;
 267
 268         /** @var bool */
 269         public $allowBlankSummary = false;
 270
 271         /** @var bool */
 272         protected $blankArticle = false;
 273
 274         /** @var bool */
 275         protected $allowBlankArticle = false;
 276
 277         /** @var bool */
 278         protected $selfRedirect = false;
 279
 280         /** @var bool */
 281         protected $allowSelfRedirect = false;
 282
 283         /** @var string */
 284         public $autoSumm = '';
 285
 286         /** @var string */
 287         public $hookError = '';
 288
 289         /** @var ParserOutput */
 290         public $mParserOutput;
 291
 292         /** @var bool Has a summary been preset using GET parameter &summary= ? */
 293         public $hasPresetSummary = false;
 294
 295         /** @var bool */
 296         public $mBaseRevision = false;
 297
 298         /** @var bool */
 299         public $mShowSummaryField = true;
 300
 301         # Form values
 302
 303         /** @var bool */
 304         public $save = false;
 305
 306         /** @var bool */
 307         public $preview = false;
 308
 309         /** @var bool */
 310         public $diff = false;
 311
 312         /** @var bool */
 313         public $minoredit = false;
 314
 315         /** @var bool */
 316         public $watchthis = false;
 317
 318         /** @var bool */
 319         public $recreate = false;
 320
 321         /** @var string */
 322         public $textbox1 = '';
 323
 324         /** @var string */
 325         public $textbox2 = '';
 326
 327         /** @var string */
 328         public $summary = '';
 329
 330         /** @var bool */
 331         public $nosummary = false;
 332
 333         /** @var string */
 334         public $edittime = '';
 335
 336         /** @var string */
 337         public $section = '';
 338
 339         /** @var string */
 340         public $sectiontitle = '';
 341
 342         /** @var string */
 343         public $starttime = '';
 344
 345         /** @var int */
 346         public $oldid = 0;
 347
 348         /** @var int */
 349         public $parentRevId = 0;
 350
 351         /** @var string */
 352         public $editintro = '';
 353
 354         /** @var null */
 355         public $scrolltop = null;
 356
 357         /** @var bool */
 358         public $bot = true;
 359
 360         /** @var null|string */
 361         public $contentModel = null;
 362
 363         /** @var null|string */
 364         public $contentFormat = null;
 365
 366         /** @var null|array */
 367         public $changeTags = null;
 368
 369         # Placeholders for text injection by hooks (must be HTML)
 370         # extensions should take care to _append_ to the present value
 371
 372         /** @var string Before even the preview */
 373         public $editFormPageTop = '';
 374         public $editFormTextTop = '';
 375         public $editFormTextBeforeContent = '';
 376         public $editFormTextAfterWarn = '';
 377         public $editFormTextAfterTools = '';
 378         public $editFormTextBottom = '';
 379         public $editFormTextAfterContent = '';
 380         public $previewTextAfterContent = '';
 381         public $mPreloadContent = null;
 382
 383         /* $didSave should be set to true whenever an article was successfully altered. */
 384         public $didSave = false;
 385         public $undidRev = 0;
 386
 387         public $suppressIntro = false;
 388
 389         /** @var bool */
 390         protected $edit;
 391
 392         /**
 393          * @var bool Set in ApiEditPage, based on ContentHandler::allowsDirectApiEditing
 394          */
 395         private $enableApiEditOverride = false;
 396
 397         /**
 398          * @param Article $article
 399          */
 400         public function __construct( Article $article ) {
 401                 $this->mArticle = $article;
 402                 $this->mTitle = $article->getTitle();
 403
 404                 $this->contentModel = $this->mTitle->getContentModel();
 405
 406                 $handler = ContentHandler::getForModelID( $this->contentModel );
 407                 $this->contentFormat = $handler->getDefaultFormat();
 408         }
 409
 410         /**
 411          * @return Article
 412          */
 413         public function getArticle() {
 414                 return $this->mArticle;
 415         }
 416
 417         /**
 418          * @since 1.19
 419          * @return Title
 420          */
 421         public function getTitle() {
 422                 return $this->mTitle;
 423         }
 424
 425         /**
 426          * Set the context Title object
 427          *
 428          * @param Title|null $title Title object or null
 429          */
 430         public function setContextTitle( $title ) {
 431                 $this->mContextTitle = $title;
 432         }
 433
 434         /**
 435          * Get the context title object.
 436          * If not set, $wgTitle will be returned. This behavior might change in
 437          * the future to return $this->mTitle instead.
 438          *
 439          * @return Title
 440          */
 441         public function getContextTitle() {
 442                 if ( is_null( $this->mContextTitle ) ) {
 443                         global $wgTitle;
 444                         return $wgTitle;
 445                 } else {
 446                         return $this->mContextTitle;
 447                 }
 448         }
 449
 450         /**
 451          * Returns if the given content model is editable.
 452          *
 453          * @param string $modelId The ID of the content model to test. Use CONTENT_MODEL_XXX constants.
 454          * @return bool
 455          * @throws MWException If $modelId has no known handler
 456          */
 457         public function isSupportedContentModel( $modelId ) {
 458                 return $this->enableApiEditOverride === true ||
 459                         ContentHandler::getForModelID( $modelId )->supportsDirectEditing();
 460         }
 461
 462         /**
 463          * Allow editing of content that supports API direct editing, but not general
 464          * direct editing. Set to false by default.
 465          *
 466          * @param bool $enableOverride
 467          */
 468         public function setApiEditOverride( $enableOverride ) {
 469                 $this->enableApiEditOverride = $enableOverride;
 470         }
 471
 472         function submit() {
 473                 $this->edit();
 474         }
 475
 476         /**
 477          * This is the function that gets called for "action=edit". It
 478          * sets up various member variables, then passes execution to
 479          * another function, usually showEditForm()
 480          *
 481          * The edit form is self-submitting, so that when things like
 482          * preview and edit conflicts occur, we get the same form back
 483          * with the extra stuff added.  Only when the final submission
 484          * is made and all is well do we actually save and redirect to
 485          * the newly-edited page.
 486          */
 487         function edit() {
 488                 global $wgOut, $wgRequest, $wgUser;
 489                 // Allow extensions to modify/prevent this form or submission
 490                 if ( !Hooks::run( 'AlternateEdit', array( $this ) ) ) {
 491                         return;
 492                 }
 493
 494                 wfDebug( __METHOD__ . ": enter\n" );
 495
 496                 // If they used redlink=1 and the page exists, redirect to the main article
 497                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 498                         $wgOut->redirect( $this->mTitle->getFullURL() );
 499                         return;
 500                 }
 501
 502                 $this->importFormData( $wgRequest );
 503                 $this->firsttime = false;
 504
 505                 if ( wfReadOnly() && $this->save ) {
 506                         // Force preview
 507                         $this->save = false;
 508                         $this->preview = true;
 509                 }
 510
 511                 if ( $this->save ) {
 512                         $this->formtype = 'save';
 513                 } elseif ( $this->preview ) {
 514                         $this->formtype = 'preview';
 515                 } elseif ( $this->diff ) {
 516                         $this->formtype = 'diff';
 517                 } else { # First time through
 518                         $this->firsttime = true;
 519                         if ( $this->previewOnOpen() ) {
 520                                 $this->formtype = 'preview';
 521                         } else {
 522                                 $this->formtype = 'initial';
 523                         }
 524                 }
 525
 526                 $permErrors = $this->getEditPermissionErrors( $this->save ? 'secure' : 'full' );
 527                 if ( $permErrors ) {
 528                         wfDebug( __METHOD__ . ": User can't edit\n" );
 529                         // Auto-block user's IP if the account was "hard" blocked
 530                         $user = $wgUser;
 531                         DeferredUpdates::addCallableUpdate( function() use ( $user ) {
 532                                 $user->spreadAnyEditBlock();
 533                         } );
 534
 535                         $this->displayPermissionsError( $permErrors );
 536
 537                         return;
 538                 }
 539
 540                 $this->isConflict = false;
 541                 // css / js subpages of user pages get a special treatment
 542                 $this->isCssJsSubpage = $this->mTitle->isCssJsSubpage();
 543                 $this->isCssSubpage = $this->mTitle->isCssSubpage();
 544                 $this->isJsSubpage = $this->mTitle->isJsSubpage();
 545                 // @todo FIXME: Silly assignment.
 546                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 547
 548                 # Show applicable editing introductions
 549                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 550                         $this->showIntro();
 551                 }
 552
 553                 # Attempt submission here.  This will check for edit conflicts,
 554                 # and redundantly check for locked database, blocked IPs, etc.
 555                 # that edit() already checked just in case someone tries to sneak
 556                 # in the back door with a hand-edited submission URL.
 557
 558                 if ( 'save' == $this->formtype ) {
 559                         $resultDetails = null;
 560                         $status = $this->attemptSave( $resultDetails );
 561                         if ( !$this->handleStatus( $status, $resultDetails ) ) {
 562                                 return;
 563                         }
 564                 }
 565
 566                 # First time through: get contents, set time for conflict
 567                 # checking, etc.
 568                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 569                         if ( $this->initialiseForm() === false ) {
 570                                 $this->noSuchSectionPage();
 571                                 return;
 572                         }
 573
 574                         if ( !$this->mTitle->getArticleID() ) {
 575                                 Hooks::run( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 576                         } else {
 577                                 Hooks::run( 'EditFormInitialText', array( $this ) );
 578                         }
 579
 580                 }
 581
 582                 $this->showEditForm();
 583         }
 584
 585         /**
 586          * @param string $rigor Same format as Title::getUserPermissionErrors()
 587          * @return array
 588          */
 589         protected function getEditPermissionErrors( $rigor = 'secure' ) {
 590                 global $wgUser;
 591
 592                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser, $rigor );
 593                 # Can this title be created?
 594                 if ( !$this->mTitle->exists() ) {
 595                         $permErrors = array_merge(
 596                                 $permErrors,
 597                                 wfArrayDiff2(
 598                                         $this->mTitle->getUserPermissionsErrors( 'create', $wgUser, $rigor ),
 599                                         $permErrors
 600                                 )
 601                         );
 602                 }
 603                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 604                 $remove = array();
 605                 foreach ( $permErrors as $error ) {
 606                         if ( ( $this->preview || $this->diff )
 607                                 && ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' )
 608                         ) {
 609                                 $remove[] = $error;
 610                         }
 611                 }
 612                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 613
 614                 return $permErrors;
 615         }
 616
 617         /**
 618          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 619          * but with the following differences:
 620          * - If redlink=1, the user will be redirected to the page
 621          * - If there is content to display or the error occurs while either saving,
 622          *   previewing or showing the difference, it will be a
 623          *   "View source for ..." page displaying the source code after the error message.
 624          *
 625          * @since 1.19
 626          * @param array $permErrors Array of permissions errors, as returned by
 627          *    Title::getUserPermissionsErrors().
 628          * @throws PermissionsError
 629          */
 630         protected function displayPermissionsError( array $permErrors ) {
 631                 global $wgRequest, $wgOut;
 632
 633                 if ( $wgRequest->getBool( 'redlink' ) ) {
 634                         // The edit page was reached via a red link.
 635                         // Redirect to the article page and let them click the edit tab if
 636                         // they really want a permission error.
 637                         $wgOut->redirect( $this->mTitle->getFullURL() );
 638                         return;
 639                 }
 640
 641                 $content = $this->getContentObject();
 642
 643                 # Use the normal message if there's nothing to display
 644                 if ( $this->firsttime && ( !$content || $content->isEmpty() ) ) {
 645                         $action = $this->mTitle->exists() ? 'edit' :
 646                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 647                         throw new PermissionsError( $action, $permErrors );
 648                 }
 649
 650                 Hooks::run( 'EditPage::showReadOnlyForm:initial', array( $this, &$wgOut ) );
 651
 652                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 653                 $wgOut->setPageTitle( wfMessage(
 654                         'viewsource-title',
 655                         $this->getContextTitle()->getPrefixedText()
 656                 ) );
 657                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 658                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 659                 $wgOut->addHTML( "<hr />\n" );
 660
 661                 # If the user made changes, preserve them when showing the markup
 662                 # (This happens when a user is blocked during edit, for instance)
 663                 if ( !$this->firsttime ) {
 664                         $text = $this->textbox1;
 665                         $wgOut->addWikiMsg( 'viewyourtext' );
 666                 } else {
 667                         $text = $this->toEditText( $content );
 668                         $wgOut->addWikiMsg( 'viewsourcetext' );
 669                 }
 670
 671                 $this->showTextbox( $text, 'wpTextbox1', array( 'readonly' ) );
 672
 673                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 674                         Linker::formatTemplates( $this->getTemplates() ) ) );
 675
 676                 $wgOut->addModules( 'mediawiki.action.edit.collapsibleFooter' );
 677
 678                 if ( $this->mTitle->exists() ) {
 679                         $wgOut->returnToMain( null, $this->mTitle );
 680                 }
 681         }
 682
 683         /**
 684          * Should we show a preview when the edit form is first shown?
 685          *
 686          * @return bool
 687          */
 688         protected function previewOnOpen() {
 689                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 690                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 691                         // Explicit override from request
 692                         return true;
 693                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 694                         // Explicit override from request
 695                         return false;
 696                 } elseif ( $this->section == 'new' ) {
 697                         // Nothing *to* preview for new sections
 698                         return false;
 699                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() )
 700                         && $wgUser->getOption( 'previewonfirst' )
 701                 ) {
 702                         // Standard preference behavior
 703                         return true;
 704                 } elseif ( !$this->mTitle->exists()
 705                         && isset( $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 706                         && $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]
 707                 ) {
 708                         // Categories are special
 709                         return true;
 710                 } else {
 711                         return false;
 712                 }
 713         }
 714
 715         /**
 716          * Checks whether the user entered a skin name in uppercase,
 717          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 718          *
 719          * @return bool
 720          */
 721         protected function isWrongCaseCssJsPage() {
 722                 if ( $this->mTitle->isCssJsSubpage() ) {
 723                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 724                         $skins = array_merge(
 725                                 array_keys( Skin::getSkinNames() ),
 726                                 array( 'common' )
 727                         );
 728                         return !in_array( $name, $skins )
 729                                 && in_array( strtolower( $name ), $skins );
 730                 } else {
 731                         return false;
 732                 }
 733         }
 734
 735         /**
 736          * Returns whether section editing is supported for the current page.
 737          * Subclasses may override this to replace the default behavior, which is
 738          * to check ContentHandler::supportsSections.
 739          *
 740          * @return bool True if this edit page supports sections, false otherwise.
 741          */
 742         protected function isSectionEditSupported() {
 743                 $contentHandler = ContentHandler::getForTitle( $this->mTitle );
 744                 return $contentHandler->supportsSections();
 745         }
 746
 747         /**
 748          * This function collects the form data and uses it to populate various member variables.
 749          * @param WebRequest $request
 750          * @throws ErrorPageError
 751          */
 752         function importFormData( &$request ) {
 753                 global $wgContLang, $wgUser;
 754
 755                 # Section edit can come from either the form or a link
 756                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 757
 758                 if ( $this->section !== null && $this->section !== '' && !$this->isSectionEditSupported() ) {
 759                         throw new ErrorPageError( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
 760                 }
 761
 762                 $this->isNew = !$this->mTitle->exists() || $this->section == 'new';
 763
 764                 if ( $request->wasPosted() ) {
 765                         # These fields need to be checked for encoding.
 766                         # Also remove trailing whitespace, but don't remove _initial_
 767                         # whitespace from the text boxes. This may be significant formatting.
 768                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 769                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 770                                 // Skip this if wpTextbox2 has input, it indicates that we came
 771                                 // from a conflict page with raw page text, not a custom form
 772                                 // modified by subclasses
 773                                 $textbox1 = $this->importContentFormData( $request );
 774                                 if ( $textbox1 !== null ) {
 775                                         $this->textbox1 = $textbox1;
 776                                 }
 777                         }
 778
 779                         # Truncate for whole multibyte characters
 780                         $this->summary = $wgContLang->truncate( $request->getText( 'wpSummary' ), 255 );
 781
 782                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 783                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 784                         # section titles.
 785                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 786
 787                         # Treat sectiontitle the same way as summary.
 788                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 789                         # currently doing double duty as both edit summary and section title. Right now this
 790                         # is just to allow API edits to work around this limitation, but this should be
 791                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 792                         $this->sectiontitle = $wgContLang->truncate( $request->getText( 'wpSectionTitle' ), 255 );
 793                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 794
 795                         $this->edittime = $request->getVal( 'wpEdittime' );
 796                         $this->starttime = $request->getVal( 'wpStarttime' );
 797
 798                         $undidRev = $request->getInt( 'wpUndidRevision' );
 799                         if ( $undidRev ) {
 800                                 $this->undidRev = $undidRev;
 801                         }
 802
 803                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 804
 805                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 806                                 // wpTextbox1 field is missing, possibly due to being "too big"
 807                                 // according to some filter rules such as Suhosin's setting for
 808                                 // suhosin.request.max_value_length (d'oh)
 809                                 $this->incompleteForm = true;
 810                         } else {
 811                                 // If we receive the last parameter of the request, we can fairly
 812                                 // claim the POST request has not been truncated.
 813
 814                                 // TODO: softened the check for cutover.  Once we determine
 815                                 // that it is safe, we should complete the transition by
 816                                 // removing the "edittime" clause.
 817                                 $this->incompleteForm = ( !$request->getVal( 'wpUltimateParam' )
 818                                         && is_null( $this->edittime ) );
 819                         }
 820                         if ( $this->incompleteForm ) {
 821                                 # If the form is incomplete, force to preview.
 822                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 823                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 824                                 $this->preview = true;
 825                         } else {
 826                                 $this->preview = $request->getCheck( 'wpPreview' );
 827                                 $this->diff = $request->getCheck( 'wpDiff' );
 828
 829                                 // Remember whether a save was requested, so we can indicate
 830                                 // if we forced preview due to session failure.
 831                                 $this->mTriedSave = !$this->preview;
 832
 833                                 if ( $this->tokenOk( $request ) ) {
 834                                         # Some browsers will not report any submit button
 835                                         # if the user hits enter in the comment box.
 836                                         # The unmarked state will be assumed to be a save,
 837                                         # if the form seems otherwise complete.
 838                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 839                                 } elseif ( $this->diff ) {
 840                                         # Failed token check, but only requested "Show Changes".
 841                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 842                                 } else {
 843                                         # Page might be a hack attempt posted from
 844                                         # an external site. Preview instead of saving.
 845                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 846                                         $this->preview = true;
 847                                 }
 848                         }
 849                         $this->save = !$this->preview && !$this->diff;
 850                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 851                                 $this->edittime = null;
 852                         }
 853
 854                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 855                                 $this->starttime = null;
 856                         }
 857
 858                         $this->recreate = $request->getCheck( 'wpRecreate' );
 859
 860                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 861                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 862
 863                         # Don't force edit summaries when a user is editing their own user or talk page
 864                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK )
 865                                 && $this->mTitle->getText() == $wgUser->getName()
 866                         ) {
 867                                 $this->allowBlankSummary = true;
 868                         } else {
 869                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' )
 870                                         || !$wgUser->getOption( 'forceeditsummary' );
 871                         }
 872
 873                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 874
 875                         $this->allowBlankArticle = $request->getBool( 'wpIgnoreBlankArticle' );
 876                         $this->allowSelfRedirect = $request->getBool( 'wpIgnoreSelfRedirect' );
 877
 878                         $changeTags = $request->getVal( 'wpChangeTags' );
 879                         if ( is_null( $changeTags ) || $changeTags === '' ) {
 880                                 $this->changeTags = array();
 881                         } else {
 882                                 $this->changeTags = array_filter( array_map( 'trim', explode( ',',
 883                                         $changeTags ) ) );
 884                         }
 885                 } else {
 886                         # Not a posted form? Start with nothing.
 887                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 888                         $this->textbox1 = '';
 889                         $this->summary = '';
 890                         $this->sectiontitle = '';
 891                         $this->edittime = '';
 892                         $this->starttime = wfTimestampNow();
 893                         $this->edit = false;
 894                         $this->preview = false;
 895                         $this->save = false;
 896                         $this->diff = false;
 897                         $this->minoredit = false;
 898                         // Watch may be overridden by request parameters
 899                         $this->watchthis = $request->getBool( 'watchthis', false );
 900                         $this->recreate = false;
 901
 902                         // When creating a new section, we can preload a section title by passing it as the
 903                         // preloadtitle parameter in the URL (Bug 13100)
 904                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 905                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 906                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 907                                 $this->summary = $request->getVal( 'preloadtitle' );
 908                         } elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 909                                 $this->summary = $request->getText( 'summary' );
 910                                 if ( $this->summary !== '' ) {
 911                                         $this->hasPresetSummary = true;
 912                                 }
 913                         }
 914
 915                         if ( $request->getVal( 'minor' ) ) {
 916                                 $this->minoredit = true;
 917                         }
 918                 }
 919
 920                 $this->oldid = $request->getInt( 'oldid' );
 921                 $this->parentRevId = $request->getInt( 'parentRevId' );
 922
 923                 $this->bot = $request->getBool( 'bot', true );
 924                 $this->nosummary = $request->getBool( 'nosummary' );
 925
 926                 // May be overridden by revision.
 927                 $this->contentModel = $request->getText( 'model', $this->contentModel );
 928                 // May be overridden by revision.
 929                 $this->contentFormat = $request->getText( 'format', $this->contentFormat );
 930
 931                 if ( !ContentHandler::getForModelID( $this->contentModel )
 932                         ->isSupportedFormat( $this->contentFormat )
 933                 ) {
 934                         throw new ErrorPageError(
 935                                 'editpage-notsupportedcontentformat-title',
 936                                 'editpage-notsupportedcontentformat-text',
 937                                 array( $this->contentFormat, ContentHandler::getLocalizedName( $this->contentModel ) )
 938                         );
 939                 }
 940
 941                 /**
 942                  * @todo Check if the desired model is allowed in this namespace, and if
 943                  *   a transition from the page's current model to the new model is
 944                  *   allowed.
 945                  */
 946
 947                 $this->editintro = $request->getText( 'editintro',
 948                         // Custom edit intro for new sections
 949                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 950
 951                 // Allow extensions to modify form data
 952                 Hooks::run( 'EditPage::importFormData', array( $this, $request ) );
 953
 954         }
 955
 956         /**
 957          * Subpage overridable method for extracting the page content data from the
 958          * posted form to be placed in $this->textbox1, if using customized input
 959          * this method should be overridden and return the page text that will be used
 960          * for saving, preview parsing and so on...
 961          *
 962          * @param WebRequest $request
 963          */
 964         protected function importContentFormData( &$request ) {
 965                 return; // Don't do anything, EditPage already extracted wpTextbox1
 966         }
 967
 968         /**
 969          * Initialise form fields in the object
 970          * Called on the first invocation, e.g. when a user clicks an edit link
 971          * @return bool If the requested section is valid
 972          */
 973         function initialiseForm() {
 974                 global $wgUser;
 975                 $this->edittime = $this->mArticle->getTimestamp();
 976
 977                 $content = $this->getContentObject( false ); #TODO: track content object?!
 978                 if ( $content === false ) {
 979                         return false;
 980                 }
 981                 $this->textbox1 = $this->toEditText( $content );
 982
 983                 // activate checkboxes if user wants them to be always active
 984                 # Sort out the "watch" checkbox
 985                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 986                         # Watch all edits
 987                         $this->watchthis = true;
 988                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 989                         # Watch creations
 990                         $this->watchthis = true;
 991                 } elseif ( $wgUser->isWatched( $this->mTitle ) ) {
 992                         # Already watched
 993                         $this->watchthis = true;
 994                 }
 995                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 996                         $this->minoredit = true;
 997                 }
 998                 if ( $this->textbox1 === false ) {
 999                         return false;
1000                 }
1001                 return true;
1002         }
1003
1004         /**
1005          * @param Content|null $def_content The default value to return
1006          *
1007          * @return Content|null Content on success, $def_content for invalid sections
1008          *
1009          * @since 1.21
1010          */
1011         protected function getContentObject( $def_content = null ) {
1012                 global $wgOut, $wgRequest, $wgUser, $wgContLang;
1013
1014                 $content = false;
1015
1016                 // For message page not locally set, use the i18n message.
1017                 // For other non-existent articles, use preload text if any.
1018                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
1019                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
1020                                 # If this is a system message, get the default text.
1021                                 $msg = $this->mTitle->getDefaultMessageText();
1022
1023                                 $content = $this->toEditContent( $msg );
1024                         }
1025                         if ( $content === false ) {
1026                                 # If requested, preload some text.
1027                                 $preload = $wgRequest->getVal( 'preload',
1028                                         // Custom preload text for new sections
1029                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
1030                                 $params = $wgRequest->getArray( 'preloadparams', array() );
1031
1032                                 $content = $this->getPreloadedContent( $preload, $params );
1033                         }
1034                 // For existing pages, get text based on "undo" or section parameters.
1035                 } else {
1036                         if ( $this->section != '' ) {
1037                                 // Get section edit text (returns $def_text for invalid sections)
1038                                 $orig = $this->getOriginalContent( $wgUser );
1039                                 $content = $orig ? $orig->getSection( $this->section ) : null;
1040
1041                                 if ( !$content ) {
1042                                         $content = $def_content;
1043                                 }
1044                         } else {
1045                                 $undoafter = $wgRequest->getInt( 'undoafter' );
1046                                 $undo = $wgRequest->getInt( 'undo' );
1047
1048                                 if ( $undo > 0 && $undoafter > 0 ) {
1049                                         $undorev = Revision::newFromId( $undo );
1050                                         $oldrev = Revision::newFromId( $undoafter );
1051
1052                                         # Sanity check, make sure it's the right page,
1053                                         # the revisions exist and they were not deleted.
1054                                         # Otherwise, $content will be left as-is.
1055                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
1056                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
1057                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT )
1058                                         ) {
1059                                                 $content = $this->mArticle->getUndoContent( $undorev, $oldrev );
1060
1061                                                 if ( $content === false ) {
1062                                                         # Warn the user that something went wrong
1063                                                         $undoMsg = 'failure';
1064                                                 } else {
1065                                                         $oldContent = $this->mArticle->getPage()->getContent( Revision::RAW );
1066                                                         $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
1067                                                         $newContent = $content->preSaveTransform( $this->mTitle, $wgUser, $popts );
1068
1069                                                         if ( $newContent->equals( $oldContent ) ) {
1070                                                                 # Tell the user that the undo results in no change,
1071                                                                 # i.e. the revisions were already undone.
1072                                                                 $undoMsg = 'nochange';
1073                                                                 $content = false;
1074                                                         } else {
1075                                                                 # Inform the user of our success and set an automatic edit summary
1076                                                                 $undoMsg = 'success';
1077
1078                                                                 # If we just undid one rev, use an autosummary
1079                                                                 $firstrev = $oldrev->getNext();
1080                                                                 if ( $firstrev && $firstrev->getId() == $undo ) {
1081                                                                         $userText = $undorev->getUserText();
1082                                                                         if ( $userText === '' ) {
1083                                                                                 $undoSummary = wfMessage(
1084                                                                                         'undo-summary-username-hidden',
1085                                                                                         $undo
1086                                                                                 )->inContentLanguage()->text();
1087                                                                         } else {
1088                                                                                 $undoSummary = wfMessage(
1089                                                                                         'undo-summary',
1090                                                                                         $undo,
1091                                                                                         $userText
1092                                                                                 )->inContentLanguage()->text();
1093                                                                         }
1094                                                                         if ( $this->summary === '' ) {
1095                                                                                 $this->summary = $undoSummary;
1096                                                                         } else {
1097                                                                                 $this->summary = $undoSummary . wfMessage( 'colon-separator' )
1098                                                                                         ->inContentLanguage()->text() . $this->summary;
1099                                                                         }
1100                                                                         $this->undidRev = $undo;
1101                                                                 }
1102                                                                 $this->formtype = 'diff';
1103                                                         }
1104                                                 }
1105                                         } else {
1106                                                 // Failed basic sanity checks.
1107                                                 // Older revisions may have been removed since the link
1108                                                 // was created, or we may simply have got bogus input.
1109                                                 $undoMsg = 'norev';
1110                                         }
1111
1112                                         // Messages: undo-success, undo-failure, undo-norev, undo-nochange
1113                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
1114                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
1115                                                 wfMessage( 'undo-' . $undoMsg )->plain() . '</div>', true, /* interface */true );
1116                                 }
1117
1118                                 if ( $content === false ) {
1119                                         $content = $this->getOriginalContent( $wgUser );
1120                                 }
1121                         }
1122                 }
1123
1124                 return $content;
1125         }
1126
1127         /**
1128          * Get the content of the wanted revision, without section extraction.
1129          *
1130          * The result of this function can be used to compare user's input with
1131          * section replaced in its context (using WikiPage::replaceSection())
1132          * to the original text of the edit.
1133          *
1134          * This differs from Article::getContent() that when a missing revision is
1135          * encountered the result will be null and not the
1136          * 'missing-revision' message.
1137          *
1138          * @since 1.19
1139          * @param User $user The user to get the revision for
1140          * @return Content|null
1141          */
1142         private function getOriginalContent( User $user ) {
1143                 if ( $this->section == 'new' ) {
1144                         return $this->getCurrentContent();
1145                 }
1146                 $revision = $this->mArticle->getRevisionFetched();
1147                 if ( $revision === null ) {
1148                         if ( !$this->contentModel ) {
1149                                 $this->contentModel = $this->getTitle()->getContentModel();
1150                         }
1151                         $handler = ContentHandler::getForModelID( $this->contentModel );
1152
1153                         return $handler->makeEmptyContent();
1154                 }
1155                 $content = $revision->getContent( Revision::FOR_THIS_USER, $user );
1156                 return $content;
1157         }
1158
1159         /**
1160          * Get the current content of the page. This is basically similar to
1161          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
1162          * content object is returned instead of null.
1163          *
1164          * @since 1.21
1165          * @return Content
1166          */
1167         protected function getCurrentContent() {
1168                 $rev = $this->mArticle->getRevision();
1169                 $content = $rev ? $rev->getContent( Revision::RAW ) : null;
1170
1171                 if ( $content === false || $content === null ) {
1172                         if ( !$this->contentModel ) {
1173                                 $this->contentModel = $this->getTitle()->getContentModel();
1174                         }
1175                         $handler = ContentHandler::getForModelID( $this->contentModel );
1176
1177                         return $handler->makeEmptyContent();
1178                 } else {
1179                         # nasty side-effect, but needed for consistency
1180                         $this->contentModel = $rev->getContentModel();
1181                         $this->contentFormat = $rev->getContentFormat();
1182
1183                         return $content;
1184                 }
1185         }
1186
1187         /**
1188          * Use this method before edit() to preload some content into the edit box
1189          *
1190          * @param Content $content
1191          *
1192          * @since 1.21
1193          */
1194         public function setPreloadedContent( Content $content ) {
1195                 $this->mPreloadContent = $content;
1196         }
1197
1198         /**
1199          * Get the contents to be preloaded into the box, either set by
1200          * an earlier setPreloadText() or by loading the given page.
1201          *
1202          * @param string $preload Representing the title to preload from.
1203          * @param array $params Parameters to use (interface-message style) in the preloaded text
1204          *
1205          * @return Content
1206          *
1207          * @since 1.21
1208          */
1209         protected function getPreloadedContent( $preload, $params = array() ) {
1210                 global $wgUser;
1211
1212                 if ( !empty( $this->mPreloadContent ) ) {
1213                         return $this->mPreloadContent;
1214                 }
1215
1216                 $handler = ContentHandler::getForTitle( $this->getTitle() );
1217
1218                 if ( $preload === '' ) {
1219                         return $handler->makeEmptyContent();
1220                 }
1221
1222                 $title = Title::newFromText( $preload );
1223                 # Check for existence to avoid getting MediaWiki:Noarticletext
1224                 if ( $title === null || !$title->exists() || !$title->userCan( 'read', $wgUser ) ) {
1225                         //TODO: somehow show a warning to the user!
1226                         return $handler->makeEmptyContent();
1227                 }
1228
1229                 $page = WikiPage::factory( $title );
1230                 if ( $page->isRedirect() ) {
1231                         $title = $page->getRedirectTarget();
1232                         # Same as before
1233                         if ( $title === null || !$title->exists() || !$title->userCan( 'read', $wgUser ) ) {
1234                                 //TODO: somehow show a warning to the user!
1235                                 return $handler->makeEmptyContent();
1236                         }
1237                         $page = WikiPage::factory( $title );
1238                 }
1239
1240                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1241                 $content = $page->getContent( Revision::RAW );
1242
1243                 if ( !$content ) {
1244                         //TODO: somehow show a warning to the user!
1245                         return $handler->makeEmptyContent();
1246                 }
1247
1248                 if ( $content->getModel() !== $handler->getModelID() ) {
1249                         $converted = $content->convert( $handler->getModelID() );
1250
1251                         if ( !$converted ) {
1252                                 //TODO: somehow show a warning to the user!
1253                                 wfDebug( "Attempt to preload incompatible content: " .
1254                                         "can't convert " . $content->getModel() .
1255                                         " to " . $handler->getModelID() );
1256
1257                                 return $handler->makeEmptyContent();
1258                         }
1259
1260                         $content = $converted;
1261                 }
1262
1263                 return $content->preloadTransform( $title, $parserOptions, $params );
1264         }
1265
1266         /**
1267          * Make sure the form isn't faking a user's credentials.
1268          *
1269          * @param WebRequest $request
1270          * @return bool
1271          * @private
1272          */
1273         function tokenOk( &$request ) {
1274                 global $wgUser;
1275                 $token = $request->getVal( 'wpEditToken' );
1276                 $this->mTokenOk = $wgUser->matchEditToken( $token );
1277                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
1278                 return $this->mTokenOk;
1279         }
1280
1281         /**
1282          * Sets post-edit cookie indicating the user just saved a particular revision.
1283          *
1284          * This uses a temporary cookie for each revision ID so separate saves will never
1285          * interfere with each other.
1286          *
1287          * The cookie is deleted in the mediawiki.action.view.postEdit JS module after
1288          * the redirect.  It must be clearable by JavaScript code, so it must not be
1289          * marked HttpOnly. The JavaScript code converts the cookie to a wgPostEdit config
1290          * variable.
1291          *
1292          * If the variable were set on the server, it would be cached, which is unwanted
1293          * since the post-edit state should only apply to the load right after the save.
1294          *
1295          * @param int $statusValue The status value (to check for new article status)
1296          */
1297         protected function setPostEditCookie( $statusValue ) {
1298                 $revisionId = $this->mArticle->getLatest();
1299                 $postEditKey = self::POST_EDIT_COOKIE_KEY_PREFIX . $revisionId;
1300
1301                 $val = 'saved';
1302                 if ( $statusValue == self::AS_SUCCESS_NEW_ARTICLE ) {
1303                         $val = 'created';
1304                 } elseif ( $this->oldid ) {
1305                         $val = 'restored';
1306                 }
1307
1308                 $response = RequestContext::getMain()->getRequest()->response();
1309                 $response->setcookie( $postEditKey, $val, time() + self::POST_EDIT_COOKIE_DURATION, array(
1310                         'httpOnly' => false,
1311                 ) );
1312         }
1313
1314         /**
1315          * Attempt submission
1316          * @param array $resultDetails See docs for $result in internalAttemptSave
1317          * @throws UserBlockedError|ReadOnlyError|ThrottledError|PermissionsError
1318          * @return Status The resulting status object.
1319          */
1320         public function attemptSave( &$resultDetails = false ) {
1321                 global $wgUser;
1322
1323                 # Allow bots to exempt some edits from bot flagging
1324                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
1325                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1326
1327                 Hooks::run( 'EditPage::attemptSave:after', array( $this, $status, $resultDetails ) );
1328
1329                 return $status;
1330         }
1331
1332         /**
1333          * Handle status, such as after attempt save
1334          *
1335          * @param Status $status
1336          * @param array|bool $resultDetails
1337          *
1338          * @throws ErrorPageError
1339          * @return bool False, if output is done, true if rest of the form should be displayed
1340          */
1341         private function handleStatus( Status $status, $resultDetails ) {
1342                 global $wgUser, $wgOut;
1343
1344                 /**
1345                  * @todo FIXME: once the interface for internalAttemptSave() is made
1346                  *   nicer, this should use the message in $status
1347                  */
1348                 if ( $status->value == self::AS_SUCCESS_UPDATE
1349                         || $status->value == self::AS_SUCCESS_NEW_ARTICLE
1350                 ) {
1351                         $this->didSave = true;
1352                         if ( !$resultDetails['nullEdit'] ) {
1353                                 $this->setPostEditCookie( $status->value );
1354                         }
1355                 }
1356
1357                 switch ( $status->value ) {
1358                         case self::AS_HOOK_ERROR_EXPECTED:
1359                         case self::AS_CONTENT_TOO_BIG:
1360                         case self::AS_ARTICLE_WAS_DELETED:
1361                         case self::AS_CONFLICT_DETECTED:
1362                         case self::AS_SUMMARY_NEEDED:
1363                         case self::AS_TEXTBOX_EMPTY:
1364                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1365                         case self::AS_END:
1366                         case self::AS_BLANK_ARTICLE:
1367                         case self::AS_SELF_REDIRECT:
1368                                 return true;
1369
1370                         case self::AS_HOOK_ERROR:
1371                                 return false;
1372
1373                         case self::AS_CANNOT_USE_CUSTOM_MODEL:
1374                         case self::AS_PARSE_ERROR:
1375                                 $wgOut->addWikiText( '<div class="error">' . $status->getWikiText() . '</div>' );
1376                                 return true;
1377
1378                         case self::AS_SUCCESS_NEW_ARTICLE:
1379                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1380                                 $anchor = isset( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1381                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1382                                 return false;
1383
1384                         case self::AS_SUCCESS_UPDATE:
1385                                 $extraQuery = '';
1386                                 $sectionanchor = $resultDetails['sectionanchor'];
1387
1388                                 // Give extensions a chance to modify URL query on update
1389                                 Hooks::run(
1390                                         'ArticleUpdateBeforeRedirect',
1391                                         array( $this->mArticle, &$sectionanchor, &$extraQuery )
1392                                 );
1393
1394                                 if ( $resultDetails['redirect'] ) {
1395                                         if ( $extraQuery == '' ) {
1396                                                 $extraQuery = 'redirect=no';
1397                                         } else {
1398                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1399                                         }
1400                                 }
1401                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1402                                 return false;
1403
1404                         case self::AS_SPAM_ERROR:
1405                                 $this->spamPageWithContent( $resultDetails['spam'] );
1406                                 return false;
1407
1408                         case self::AS_BLOCKED_PAGE_FOR_USER:
1409                                 throw new UserBlockedError( $wgUser->getBlock() );
1410
1411                         case self::AS_IMAGE_REDIRECT_ANON:
1412                         case self::AS_IMAGE_REDIRECT_LOGGED:
1413                                 throw new PermissionsError( 'upload' );
1414
1415                         case self::AS_READ_ONLY_PAGE_ANON:
1416                         case self::AS_READ_ONLY_PAGE_LOGGED:
1417                                 throw new PermissionsError( 'edit' );
1418
1419                         case self::AS_READ_ONLY_PAGE:
1420                                 throw new ReadOnlyError;
1421
1422                         case self::AS_RATE_LIMITED:
1423                                 throw new ThrottledError();
1424
1425                         case self::AS_NO_CREATE_PERMISSION:
1426                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1427                                 throw new PermissionsError( $permission );
1428
1429                         case self::AS_NO_CHANGE_CONTENT_MODEL:
1430                                 throw new PermissionsError( 'editcontentmodel' );
1431
1432                         default:
1433                                 // We don't recognize $status->value. The only way that can happen
1434                                 // is if an extension hook aborted from inside ArticleSave.
1435                                 // Render the status object into $this->hookError
1436                                 // FIXME this sucks, we should just use the Status object throughout
1437                                 $this->hookError = '<div class="error">' . $status->getWikitext() .
1438                                         '</div>';
1439                                 return true;
1440                 }
1441         }
1442
1443         /**
1444          * Run hooks that can filter edits just before they get saved.
1445          *
1446          * @param Content $content The Content to filter.
1447          * @param Status $status For reporting the outcome to the caller
1448          * @param User $user The user performing the edit
1449          *
1450          * @return bool
1451          */
1452         protected function runPostMergeFilters( Content $content, Status $status, User $user ) {
1453                 // Run old style post-section-merge edit filter
1454                 if ( !ContentHandler::runLegacyHooks( 'EditFilterMerged',
1455                         array( $this, $content, &$this->hookError, $this->summary ) )
1456                 ) {
1457                         # Error messages etc. could be handled within the hook...
1458                         $status->fatal( 'hookaborted' );
1459                         $status->value = self::AS_HOOK_ERROR;
1460                         return false;
1461                 } elseif ( $this->hookError != '' ) {
1462                         # ...or the hook could be expecting us to produce an error
1463                         $status->fatal( 'hookaborted' );
1464                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1465                         return false;
1466                 }
1467
1468                 // Run new style post-section-merge edit filter
1469                 if ( !Hooks::run( 'EditFilterMergedContent',
1470                                 array( $this->mArticle->getContext(), $content, $status, $this->summary,
1471                                 $user, $this->minoredit ) )
1472                 ) {
1473                         # Error messages etc. could be handled within the hook...
1474                         if ( $status->isGood() ) {
1475                                 $status->fatal( 'hookaborted' );
1476                                 // Not setting $this->hookError here is a hack to allow the hook
1477                                 // to cause a return to the edit page without $this->hookError
1478                                 // being set. This is used by ConfirmEdit to display a captcha
1479                                 // without any error message cruft.
1480                         } else {
1481                                 $this->hookError = $status->getWikiText();
1482                         }
1483                         // Use the existing $status->value if the hook set it
1484                         if ( !$status->value ) {
1485                                 $status->value = self::AS_HOOK_ERROR;
1486                         }
1487                         return false;
1488                 } elseif ( !$status->isOK() ) {
1489                         # ...or the hook could be expecting us to produce an error
1490                         // FIXME this sucks, we should just use the Status object throughout
1491                         $this->hookError = $status->getWikiText();
1492                         $status->fatal( 'hookaborted' );
1493                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1494                         return false;
1495                 }
1496
1497                 return true;
1498         }
1499
1500         /**
1501          * Return the summary to be used for a new section.
1502          *
1503          * @param string $sectionanchor Set to the section anchor text
1504          * @return string
1505          */
1506         private function newSectionSummary( &$sectionanchor = null ) {
1507                 global $wgParser;
1508
1509                 if ( $this->sectiontitle !== '' ) {
1510                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1511                         // If no edit summary was specified, create one automatically from the section
1512                         // title and have it link to the new section. Otherwise, respect the summary as
1513                         // passed.
1514                         if ( $this->summary === '' ) {
1515                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1516                                 return wfMessage( 'newsectionsummary' )
1517                                         ->rawParams( $cleanSectionTitle )->inContentLanguage()->text();
1518                         }
1519                 } elseif ( $this->summary !== '' ) {
1520                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1521                         # This is a new section, so create a link to the new section
1522                         # in the revision summary.
1523                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1524                         return wfMessage( 'newsectionsummary' )
1525                                 ->rawParams( $cleanSummary )->inContentLanguage()->text();
1526                 }
1527                 return $this->summary;
1528         }
1529
1530         /**
1531          * Attempt submission (no UI)
1532          *
1533          * @param array $result Array to add statuses to, currently with the
1534          *   possible keys:
1535          *   - spam (string): Spam string from content if any spam is detected by
1536          *     matchSpamRegex.
1537          *   - sectionanchor (string): Section anchor for a section save.
1538          *   - nullEdit (boolean): Set if doEditContent is OK.  True if null edit,
1539          *     false otherwise.
1540          *   - redirect (bool): Set if doEditContent is OK. True if resulting
1541          *     revision is a redirect.
1542          * @param bool $bot True if edit is being made under the bot right.
1543          *
1544          * @return Status Status object, possibly with a message, but always with
1545          *   one of the AS_* constants in $status->value,
1546          *
1547          * @todo FIXME: This interface is TERRIBLE, but hard to get rid of due to
1548          *   various error display idiosyncrasies. There are also lots of cases
1549          *   where error metadata is set in the object and retrieved later instead
1550          *   of being returned, e.g. AS_CONTENT_TOO_BIG and
1551          *   AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some
1552          * time.
1553          */
1554         function internalAttemptSave( &$result, $bot = false ) {
1555                 global $wgUser, $wgRequest, $wgParser, $wgMaxArticleSize;
1556                 global $wgContentHandlerUseDB;
1557
1558                 $status = Status::newGood();
1559
1560                 if ( !Hooks::run( 'EditPage::attemptSave', array( $this ) ) ) {
1561                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1562                         $status->fatal( 'hookaborted' );
1563                         $status->value = self::AS_HOOK_ERROR;
1564                         return $status;
1565                 }
1566
1567                 $spam = $wgRequest->getText( 'wpAntispam' );
1568                 if ( $spam !== '' ) {
1569                         wfDebugLog(
1570                                 'SimpleAntiSpam',
1571                                 $wgUser->getName() .
1572                                 ' editing "' .
1573                                 $this->mTitle->getPrefixedText() .
1574                                 '" submitted bogus field "' .
1575                                 $spam .
1576                                 '"'
1577                         );
1578                         $status->fatal( 'spamprotectionmatch', false );
1579                         $status->value = self::AS_SPAM_ERROR;
1580                         return $status;
1581                 }
1582
1583                 try {
1584                         # Construct Content object
1585                         $textbox_content = $this->toEditContent( $this->textbox1 );
1586                 } catch ( MWContentSerializationException $ex ) {
1587                         $status->fatal(
1588                                 'content-failed-to-parse',
1589                                 $this->contentModel,
1590                                 $this->contentFormat,
1591                                 $ex->getMessage()
1592                         );
1593                         $status->value = self::AS_PARSE_ERROR;
1594                         return $status;
1595                 }
1596
1597                 # Check image redirect
1598                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1599                         $textbox_content->isRedirect() &&
1600                         !$wgUser->isAllowed( 'upload' )
1601                 ) {
1602                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1603                                 $status->setResult( false, $code );
1604
1605                                 return $status;
1606                 }
1607
1608                 # Check for spam
1609                 $match = self::matchSummarySpamRegex( $this->summary );
1610                 if ( $match === false && $this->section == 'new' ) {
1611                         # $wgSpamRegex is enforced on this new heading/summary because, unlike
1612                         # regular summaries, it is added to the actual wikitext.
1613                         if ( $this->sectiontitle !== '' ) {
1614                                 # This branch is taken when the API is used with the 'sectiontitle' parameter.
1615                                 $match = self::matchSpamRegex( $this->sectiontitle );
1616                         } else {
1617                                 # This branch is taken when the "Add Topic" user interface is used, or the API
1618                                 # is used with the 'summary' parameter.
1619                                 $match = self::matchSpamRegex( $this->summary );
1620                         }
1621                 }
1622                 if ( $match === false ) {
1623                         $match = self::matchSpamRegex( $this->textbox1 );
1624                 }
1625                 if ( $match !== false ) {
1626                         $result['spam'] = $match;
1627                         $ip = $wgRequest->getIP();
1628                         $pdbk = $this->mTitle->getPrefixedDBkey();
1629                         $match = str_replace( "\n", '', $match );
1630                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1631                         $status->fatal( 'spamprotectionmatch', $match );
1632                         $status->value = self::AS_SPAM_ERROR;
1633                         return $status;
1634                 }
1635                 if ( !Hooks::run(
1636                         'EditFilter',
1637                         array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) )
1638                 ) {
1639                         # Error messages etc. could be handled within the hook...
1640                         $status->fatal( 'hookaborted' );
1641                         $status->value = self::AS_HOOK_ERROR;
1642                         return $status;
1643                 } elseif ( $this->hookError != '' ) {
1644                         # ...or the hook could be expecting us to produce an error
1645                         $status->fatal( 'hookaborted' );
1646                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1647                         return $status;
1648                 }
1649
1650                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1651                         // Auto-block user's IP if the account was "hard" blocked
1652                         $wgUser->spreadAnyEditBlock();
1653                         # Check block state against master, thus 'false'.
1654                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1655                         return $status;
1656                 }
1657
1658                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1659                 if ( $this->kblength > $wgMaxArticleSize ) {
1660                         // Error will be displayed by showEditForm()
1661                         $this->tooBig = true;
1662                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1663                         return $status;
1664                 }
1665
1666                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1667                         if ( $wgUser->isAnon() ) {
1668                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1669                                 return $status;
1670                         } else {
1671                                 $status->fatal( 'readonlytext' );
1672                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1673                                 return $status;
1674                         }
1675                 }
1676
1677                 $changingContentModel = false;
1678                 if ( $this->contentModel !== $this->mTitle->getContentModel() ) {
1679                         if ( !$wgContentHandlerUseDB ) {
1680                                 $status->fatal( 'editpage-cannot-use-custom-model' );
1681                                 $status->value = self::AS_CANNOT_USE_CUSTOM_MODEL;
1682                                 return $status;
1683                         } elseif ( !$wgUser->isAllowed( 'editcontentmodel' ) ) {
1684                                 $status->setResult( false, self::AS_NO_CHANGE_CONTENT_MODEL );
1685                                 return $status;
1686
1687                         }
1688                         $changingContentModel = true;
1689                         $oldContentModel = $this->mTitle->getContentModel();
1690                 }
1691
1692                 if ( $this->changeTags ) {
1693                         $changeTagsStatus = ChangeTags::canAddTagsAccompanyingChange(
1694                                 $this->changeTags, $wgUser );
1695                         if ( !$changeTagsStatus->isOK() ) {
1696                                 $changeTagsStatus->value = self::AS_CHANGE_TAG_ERROR;
1697                                 return $changeTagsStatus;
1698                         }
1699                 }
1700
1701                 if ( wfReadOnly() ) {
1702                         $status->fatal( 'readonlytext' );
1703                         $status->value = self::AS_READ_ONLY_PAGE;
1704                         return $status;
1705                 }
1706                 if ( $wgUser->pingLimiter() || $wgUser->pingLimiter( 'linkpurge', 0 ) ) {
1707                         $status->fatal( 'actionthrottledtext' );
1708                         $status->value = self::AS_RATE_LIMITED;
1709                         return $status;
1710                 }
1711
1712                 # If the article has been deleted while editing, don't save it without
1713                 # confirmation
1714                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1715                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1716                         return $status;
1717                 }
1718
1719                 # Load the page data from the master. If anything changes in the meantime,
1720                 # we detect it by using page_latest like a token in a 1 try compare-and-swap.
1721                 $this->mArticle->loadPageData( 'fromdbmaster' );
1722                 $new = !$this->mArticle->exists();
1723
1724                 if ( $new ) {
1725                         // Late check for create permission, just in case *PARANOIA*
1726                         if ( !$this->mTitle->userCan( 'create', $wgUser ) ) {
1727                                 $status->fatal( 'nocreatetext' );
1728                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1729                                 wfDebug( __METHOD__ . ": no create permission\n" );
1730                                 return $status;
1731                         }
1732
1733                         // Don't save a new page if it's blank or if it's a MediaWiki:
1734                         // message with content equivalent to default (allow empty pages
1735                         // in this case to disable messages, see bug 50124)
1736                         $defaultMessageText = $this->mTitle->getDefaultMessageText();
1737                         if ( $this->mTitle->getNamespace() === NS_MEDIAWIKI && $defaultMessageText !== false ) {
1738                                 $defaultText = $defaultMessageText;
1739                         } else {
1740                                 $defaultText = '';
1741                         }
1742
1743                         if ( !$this->allowBlankArticle && $this->textbox1 === $defaultText ) {
1744                                 $this->blankArticle = true;
1745                                 $status->fatal( 'blankarticle' );
1746                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1747                                 return $status;
1748                         }
1749
1750                         if ( !$this->runPostMergeFilters( $textbox_content, $status, $wgUser ) ) {
1751                                 return $status;
1752                         }
1753
1754                         $content = $textbox_content;
1755
1756                         $result['sectionanchor'] = '';
1757                         if ( $this->section == 'new' ) {
1758                                 if ( $this->sectiontitle !== '' ) {
1759                                         // Insert the section title above the content.
1760                                         $content = $content->addSectionHeader( $this->sectiontitle );
1761                                 } elseif ( $this->summary !== '' ) {
1762                                         // Insert the section title above the content.
1763                                         $content = $content->addSectionHeader( $this->summary );
1764                                 }
1765                                 $this->summary = $this->newSectionSummary( $result['sectionanchor'] );
1766                         }
1767
1768                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1769
1770                 } else { # not $new
1771
1772                         # Article exists. Check for edit conflict.
1773
1774                         $this->mArticle->clear(); # Force reload of dates, etc.
1775                         $timestamp = $this->mArticle->getTimestamp();
1776
1777                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1778
1779                         if ( $timestamp != $this->edittime ) {
1780                                 $this->isConflict = true;
1781                                 if ( $this->section == 'new' ) {
1782                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1783                                                 $this->mArticle->getComment() == $this->newSectionSummary()
1784                                         ) {
1785                                                 // Probably a duplicate submission of a new comment.
1786                                                 // This can happen when squid resends a request after
1787                                                 // a timeout but the first one actually went through.
1788                                                 wfDebug( __METHOD__
1789                                                         . ": duplicate new section submission; trigger edit conflict!\n" );
1790                                         } else {
1791                                                 // New comment; suppress conflict.
1792                                                 $this->isConflict = false;
1793                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1794                                         }
1795                                 } elseif ( $this->section == ''
1796                                         && Revision::userWasLastToEdit(
1797                                                 DB_MASTER, $this->mTitle->getArticleID(),
1798                                                 $wgUser->getId(), $this->edittime
1799                                         )
1800                                 ) {
1801                                         # Suppress edit conflict with self, except for section edits where merging is required.
1802                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1803                                         $this->isConflict = false;
1804                                 }
1805                         }
1806
1807                         // If sectiontitle is set, use it, otherwise use the summary as the section title.
1808                         if ( $this->sectiontitle !== '' ) {
1809                                 $sectionTitle = $this->sectiontitle;
1810                         } else {
1811                                 $sectionTitle = $this->summary;
1812                         }
1813
1814                         $content = null;
1815
1816                         if ( $this->isConflict ) {
1817                                 wfDebug( __METHOD__
1818                                         . ": conflict! getting section '{$this->section}' for time '{$this->edittime}'"
1819                                         . " (article time '{$timestamp}')\n" );
1820
1821                                 $content = $this->mArticle->replaceSectionContent(
1822                                         $this->section,
1823                                         $textbox_content,
1824                                         $sectionTitle,
1825                                         $this->edittime
1826                                 );
1827                         } else {
1828                                 wfDebug( __METHOD__ . ": getting section '{$this->section}'\n" );
1829                                 $content = $this->mArticle->replaceSectionContent(
1830                                         $this->section,
1831                                         $textbox_content,
1832                                         $sectionTitle
1833                                 );
1834                         }
1835
1836                         if ( is_null( $content ) ) {
1837                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1838                                 $this->isConflict = true;
1839                                 $content = $textbox_content; // do not try to merge here!
1840                         } elseif ( $this->isConflict ) {
1841                                 # Attempt merge
1842                                 if ( $this->mergeChangesIntoContent( $content ) ) {
1843                                         // Successful merge! Maybe we should tell the user the good news?
1844                                         $this->isConflict = false;
1845                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1846                                 } else {
1847                                         $this->section = '';
1848                                         $this->textbox1 = ContentHandler::getContentText( $content );
1849                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1850                                 }
1851                         }
1852
1853                         if ( $this->isConflict ) {
1854                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1855                                 return $status;
1856                         }
1857
1858                         if ( !$this->runPostMergeFilters( $content, $status, $wgUser ) ) {
1859                                 return $status;
1860                         }
1861
1862                         if ( $this->section == 'new' ) {
1863                                 // Handle the user preference to force summaries here
1864                                 if ( !$this->allowBlankSummary && trim( $this->summary ) == '' ) {
1865                                         $this->missingSummary = true;
1866                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1867                                         $status->value = self::AS_SUMMARY_NEEDED;
1868                                         return $status;
1869                                 }
1870
1871                                 // Do not allow the user to post an empty comment
1872                                 if ( $this->textbox1 == '' ) {
1873                                         $this->missingComment = true;
1874                                         $status->fatal( 'missingcommenttext' );
1875                                         $status->value = self::AS_TEXTBOX_EMPTY;
1876                                         return $status;
1877                                 }
1878                         } elseif ( !$this->allowBlankSummary
1879                                 && !$content->equals( $this->getOriginalContent( $wgUser ) )
1880                                 && !$content->isRedirect()
1881                                 && md5( $this->summary ) == $this->autoSumm
1882                         ) {
1883                                 $this->missingSummary = true;
1884                                 $status->fatal( 'missingsummary' );
1885                                 $status->value = self::AS_SUMMARY_NEEDED;
1886                                 return $status;
1887                         }
1888
1889                         # All's well
1890                         $sectionanchor = '';
1891                         if ( $this->section == 'new' ) {
1892                                 $this->summary = $this->newSectionSummary( $sectionanchor );
1893                         } elseif ( $this->section != '' ) {
1894                                 # Try to get a section anchor from the section source, redirect
1895                                 # to edited section if header found.
1896                                 # XXX: Might be better to integrate this into Article::replaceSection
1897                                 # for duplicate heading checking and maybe parsing.
1898                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1899                                 # We can't deal with anchors, includes, html etc in the header for now,
1900                                 # headline would need to be parsed to improve this.
1901                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1902                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1903                                 }
1904                         }
1905                         $result['sectionanchor'] = $sectionanchor;
1906
1907                         // Save errors may fall down to the edit form, but we've now
1908                         // merged the section into full text. Clear the section field
1909                         // so that later submission of conflict forms won't try to
1910                         // replace that into a duplicated mess.
1911                         $this->textbox1 = $this->toEditText( $content );
1912                         $this->section = '';
1913
1914                         $status->value = self::AS_SUCCESS_UPDATE;
1915                 }
1916
1917                 if ( !$this->allowSelfRedirect
1918                         && $content->isRedirect()
1919                         && $content->getRedirectTarget()->equals( $this->getTitle() )
1920                 ) {
1921                         // If the page already redirects to itself, don't warn.
1922                         $currentTarget = $this->getCurrentContent()->getRedirectTarget();
1923                         if ( !$currentTarget || !$currentTarget->equals( $this->getTitle() ) ) {
1924                                 $this->selfRedirect = true;
1925                                 $status->fatal( 'selfredirect' );
1926                                 $status->value = self::AS_SELF_REDIRECT;
1927                                 return $status;
1928                         }
1929                 }
1930
1931                 // Check for length errors again now that the section is merged in
1932                 $this->kblength = (int)( strlen( $this->toEditText( $content ) ) / 1024 );
1933                 if ( $this->kblength > $wgMaxArticleSize ) {
1934                         $this->tooBig = true;
1935                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1936                         return $status;
1937                 }
1938
1939                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1940                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1941                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1942                         ( $bot ? EDIT_FORCE_BOT : 0 );
1943
1944                 $doEditStatus = $this->mArticle->doEditContent(
1945                         $content,
1946                         $this->summary,
1947                         $flags,
1948                         false,
1949                         $wgUser,
1950                         $content->getDefaultFormat()
1951                 );
1952
1953                 if ( !$doEditStatus->isOK() ) {
1954                         // Failure from doEdit()
1955                         // Show the edit conflict page for certain recognized errors from doEdit(),
1956                         // but don't show it for errors from extension hooks
1957                         $errors = $doEditStatus->getErrorsArray();
1958                         if ( in_array( $errors[0][0],
1959                                         array( 'edit-gone-missing', 'edit-conflict', 'edit-already-exists' ) )
1960                         ) {
1961                                 $this->isConflict = true;
1962                                 // Destroys data doEdit() put in $status->value but who cares
1963                                 $doEditStatus->value = self::AS_END;
1964                         }
1965                         return $doEditStatus;
1966                 }
1967
1968                 $result['nullEdit'] = $doEditStatus->hasMessage( 'edit-no-change' );
1969                 if ( $result['nullEdit'] ) {
1970                         // We don't know if it was a null edit until now, so increment here
1971                         $wgUser->pingLimiter( 'linkpurge' );
1972                 }
1973                 $result['redirect'] = $content->isRedirect();
1974
1975                 $this->updateWatchlist();
1976
1977                 if ( $this->changeTags && isset( $doEditStatus->value['revision'] ) ) {
1978                         // If a revision was created, apply any change tags that were requested
1979                         $addTags = $this->changeTags;
1980                         $revId = $doEditStatus->value['revision']->getId();
1981                         // Defer this both for performance and so that addTags() sees the rc_id
1982                         // since the recentchange entry addition is deferred first (bug T100248)
1983                         DeferredUpdates::addCallableUpdate( function() use ( $addTags, $revId ) {
1984                                 ChangeTags::addTags( $addTags, null, $revId );
1985                         } );
1986                 }
1987
1988                 // If the content model changed, add a log entry
1989                 if ( $changingContentModel ) {
1990                         $this->addContentModelChangeLogEntry(
1991                                 $wgUser,
1992                                 $oldContentModel,
1993                                 $this->contentModel,
1994                                 $this->summary
1995                         );
1996                 }
1997
1998                 return $status;
1999         }
2000
2001         /**
2002          * @param Title $title
2003          * @param string $oldModel
2004          * @param string $newModel
2005          * @param string $reason
2006          */
2007         protected function addContentModelChangeLogEntry( User $user, $oldModel, $newModel, $reason ) {
2008                 $log = new ManualLogEntry( 'contentmodel', 'change' );
2009                 $log->setPerformer( $user );
2010                 $log->setTarget( $this->mTitle );
2011                 $log->setComment( $reason );
2012                 $log->setParameters( array(
2013                         '4::oldmodel' => $oldModel,
2014                         '5::newmodel' => $newModel
2015                 ) );
2016                 $logid = $log->insert();
2017                 $log->publish( $logid );
2018         }
2019
2020
2021         /**
2022          * Register the change of watch status
2023          */
2024         protected function updateWatchlist() {
2025                 global $wgUser;
2026
2027                 if ( $wgUser->isLoggedIn()
2028                         && $this->watchthis != $wgUser->isWatched( $this->mTitle, WatchedItem::IGNORE_USER_RIGHTS )
2029                 ) {
2030                         $fname = __METHOD__;
2031                         $title = $this->mTitle;
2032                         $watch = $this->watchthis;
2033
2034                         // Do this in its own transaction to reduce contention...
2035                         $dbw = wfGetDB( DB_MASTER );
2036                         $dbw->onTransactionIdle( function () use ( $dbw, $title, $watch, $wgUser, $fname ) {
2037                                 WatchAction::doWatchOrUnwatch( $watch, $title, $wgUser );
2038                         } );
2039                 }
2040         }
2041
2042         /**
2043          * Attempts to do 3-way merge of edit content with a base revision
2044          * and current content, in case of edit conflict, in whichever way appropriate
2045          * for the content type.
2046          *
2047          * @since 1.21
2048          *
2049          * @param Content $editContent
2050          *
2051          * @return bool
2052          */
2053         private function mergeChangesIntoContent( &$editContent ) {
2054
2055                 $db = wfGetDB( DB_MASTER );
2056
2057                 // This is the revision the editor started from
2058                 $baseRevision = $this->getBaseRevision();
2059                 $baseContent = $baseRevision ? $baseRevision->getContent() : null;
2060
2061                 if ( is_null( $baseContent ) ) {
2062                         return false;
2063                 }
2064
2065                 // The current state, we want to merge updates into it
2066                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2067                 $currentContent = $currentRevision ? $currentRevision->getContent() : null;
2068
2069                 if ( is_null( $currentContent ) ) {
2070                         return false;
2071                 }
2072
2073                 $handler = ContentHandler::getForModelID( $baseContent->getModel() );
2074
2075                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
2076
2077                 if ( $result ) {
2078                         $editContent = $result;
2079                         return true;
2080                 }
2081
2082                 return false;
2083         }
2084
2085         /**
2086          * @return Revision
2087          */
2088         function getBaseRevision() {
2089                 if ( !$this->mBaseRevision ) {
2090                         $db = wfGetDB( DB_MASTER );
2091                         $this->mBaseRevision = Revision::loadFromTimestamp(
2092                                 $db, $this->mTitle, $this->edittime );
2093                 }
2094                 return $this->mBaseRevision;
2095         }
2096
2097         /**
2098          * Check given input text against $wgSpamRegex, and return the text of the first match.
2099          *
2100          * @param string $text
2101          *
2102          * @return string|bool Matching string or false
2103          */
2104         public static function matchSpamRegex( $text ) {
2105                 global $wgSpamRegex;
2106                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
2107                 $regexes = (array)$wgSpamRegex;
2108                 return self::matchSpamRegexInternal( $text, $regexes );
2109         }
2110
2111         /**
2112          * Check given input text against $wgSummarySpamRegex, and return the text of the first match.
2113          *
2114          * @param string $text
2115          *
2116          * @return string|bool Matching string or false
2117          */
2118         public static function matchSummarySpamRegex( $text ) {
2119                 global $wgSummarySpamRegex;
2120                 $regexes = (array)$wgSummarySpamRegex;
2121                 return self::matchSpamRegexInternal( $text, $regexes );
2122         }
2123
2124         /**
2125          * @param string $text
2126          * @param array $regexes
2127          * @return bool|string
2128          */
2129         protected static function matchSpamRegexInternal( $text, $regexes ) {
2130                 foreach ( $regexes as $regex ) {
2131                         $matches = array();
2132                         if ( preg_match( $regex, $text, $matches ) ) {
2133                                 return $matches[0];
2134                         }
2135                 }
2136                 return false;
2137         }
2138
2139         function setHeaders() {
2140                 global $wgOut, $wgUser, $wgAjaxEditStash;
2141
2142                 $wgOut->addModules( 'mediawiki.action.edit' );
2143                 $wgOut->addModuleStyles( 'mediawiki.action.edit.styles' );
2144
2145                 if ( $wgUser->getOption( 'showtoolbar' ) ) {
2146                         // The addition of default buttons is handled by getEditToolbar() which
2147                         // has its own dependency on this module. The call here ensures the module
2148                         // is loaded in time (it has position "top") for other modules to register
2149                         // buttons (e.g. extensions, gadgets, user scripts).
2150                         $wgOut->addModules( 'mediawiki.toolbar' );
2151                 }
2152
2153                 if ( $wgUser->getOption( 'uselivepreview' ) ) {
2154                         $wgOut->addModules( 'mediawiki.action.edit.preview' );
2155                 }
2156
2157                 if ( $wgUser->getOption( 'useeditwarning' ) ) {
2158                         $wgOut->addModules( 'mediawiki.action.edit.editWarning' );
2159                 }
2160
2161                 if ( $wgAjaxEditStash ) {
2162                         $wgOut->addModules( 'mediawiki.action.edit.stash' );
2163                 }
2164
2165                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2166
2167                 # Enabled article-related sidebar, toplinks, etc.
2168                 $wgOut->setArticleRelated( true );
2169
2170                 $contextTitle = $this->getContextTitle();
2171                 if ( $this->isConflict ) {
2172                         $msg = 'editconflict';
2173                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
2174                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
2175                 } else {
2176                         $msg = $contextTitle->exists()
2177                                 || ( $contextTitle->getNamespace() == NS_MEDIAWIKI
2178                                         && $contextTitle->getDefaultMessageText() !== false
2179                                 )
2180                                 ? 'editing'
2181                                 : 'creating';
2182                 }
2183
2184                 # Use the title defined by DISPLAYTITLE magic word when present
2185                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
2186                 if ( $displayTitle === false ) {
2187                         $displayTitle = $contextTitle->getPrefixedText();
2188                 }
2189                 $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
2190                 # Transmit the name of the message to JavaScript for live preview
2191                 # Keep Resources.php/mediawiki.action.edit.preview in sync with the possible keys
2192                 $wgOut->addJsConfigVars( 'wgEditMessage', $msg );
2193         }
2194
2195         /**
2196          * Show all applicable editing introductions
2197          */
2198         protected function showIntro() {
2199                 global $wgOut, $wgUser;
2200                 if ( $this->suppressIntro ) {
2201                         return;
2202                 }
2203
2204                 $namespace = $this->mTitle->getNamespace();
2205
2206                 if ( $namespace == NS_MEDIAWIKI ) {
2207                         # Show a warning if editing an interface message
2208                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
2209                         # If this is a default message (but not css or js),
2210                         # show a hint that it is translatable on translatewiki.net
2211                         if ( !$this->mTitle->hasContentModel( CONTENT_MODEL_CSS )
2212                                 && !$this->mTitle->hasContentModel( CONTENT_MODEL_JAVASCRIPT )
2213                         ) {
2214                                 $defaultMessageText = $this->mTitle->getDefaultMessageText();
2215                                 if ( $defaultMessageText !== false ) {
2216                                         $wgOut->wrapWikiMsg( "<div class='mw-translateinterface'>\n$1\n</div>",
2217                                                 'translateinterface' );
2218                                 }
2219                         }
2220                 } elseif ( $namespace == NS_FILE ) {
2221                         # Show a hint to shared repo
2222                         $file = wfFindFile( $this->mTitle );
2223                         if ( $file && !$file->isLocal() ) {
2224                                 $descUrl = $file->getDescriptionUrl();
2225                                 # there must be a description url to show a hint to shared repo
2226                                 if ( $descUrl ) {
2227                                         if ( !$this->mTitle->exists() ) {
2228                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array(
2229                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
2230                                                 ) );
2231                                         } else {
2232                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
2233                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
2234                                                 ) );
2235                                         }
2236                                 }
2237                         }
2238                 }
2239
2240                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
2241                 # Show log extract when the user is currently blocked
2242                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
2243                         $parts = explode( '/', $this->mTitle->getText(), 2 );
2244                         $username = $parts[0];
2245                         $user = User::newFromName( $username, false /* allow IP users*/ );
2246                         $ip = User::isIP( $username );
2247                         $block = Block::newFromTarget( $user, $user );
2248                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
2249                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
2250                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
2251                         } elseif ( !is_null( $block ) && $block->getType() != Block::TYPE_AUTO ) {
2252                                 # Show log extract if the user is currently blocked
2253                                 LogEventsList::showLogExtract(
2254                                         $wgOut,
2255                                         'block',
2256                                         MWNamespace::getCanonicalName( NS_USER ) . ':' . $block->getTarget(),
2257                                         '',
2258                                         array(
2259                                                 'lim' => 1,
2260                                                 'showIfEmpty' => false,
2261                                                 'msgKey' => array(
2262                                                         'blocked-notice-logextract',
2263                                                         $user->getName() # Support GENDER in notice
2264                                                 )
2265                                         )
2266                                 );
2267                         }
2268                 }
2269                 # Try to add a custom edit intro, or use the standard one if this is not possible.
2270                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
2271                         $helpLink = wfExpandUrl( Skin::makeInternalOrExternalUrl(
2272                                 wfMessage( 'helppage' )->inContentLanguage()->text()
2273                         ) );
2274                         if ( $wgUser->isLoggedIn() ) {
2275                                 $wgOut->wrapWikiMsg(
2276                                         // Suppress the external link icon, consider the help url an internal one
2277                                         "<div class=\"mw-newarticletext plainlinks\">\n$1\n</div>",
2278                                         array(
2279                                                 'newarticletext',
2280                                                 $helpLink
2281                                         )
2282                                 );
2283                         } else {
2284                                 $wgOut->wrapWikiMsg(
2285                                         // Suppress the external link icon, consider the help url an internal one
2286                                         "<div class=\"mw-newarticletextanon plainlinks\">\n$1\n</div>",
2287                                         array(
2288                                                 'newarticletextanon',
2289                                                 $helpLink
2290                                         )
2291                                 );
2292                         }
2293                 }
2294                 # Give a notice if the user is editing a deleted/moved page...
2295                 if ( !$this->mTitle->exists() ) {
2296                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
2297                                 '',
2298                                 array(
2299                                         'lim' => 10,
2300                                         'conds' => array( "log_action != 'revision'" ),
2301                                         'showIfEmpty' => false,
2302                                         'msgKey' => array( 'recreate-moveddeleted-warn' )
2303                                 )
2304                         );
2305                 }
2306         }
2307
2308         /**
2309          * Attempt to show a custom editing introduction, if supplied
2310          *
2311          * @return bool
2312          */
2313         protected function showCustomIntro() {
2314                 if ( $this->editintro ) {
2315                         $title = Title::newFromText( $this->editintro );
2316                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
2317                                 global $wgOut;
2318                                 // Added using template syntax, to take <noinclude>'s into account.
2319                                 $wgOut->addWikiTextTitleTidy(
2320                                         '<div class="mw-editintro">{{:' . $title->getFullText() . '}}</div>',
2321                                         $this->mTitle
2322                                 );
2323                                 return true;
2324                         }
2325                 }
2326                 return false;
2327         }
2328
2329         /**
2330          * Gets an editable textual representation of $content.
2331          * The textual representation can be turned by into a Content object by the
2332          * toEditContent() method.
2333          *
2334          * If $content is null or false or a string, $content is returned unchanged.
2335          *
2336          * If the given Content object is not of a type that can be edited using
2337          * the text base EditPage, an exception will be raised. Set
2338          * $this->allowNonTextContent to true to allow editing of non-textual
2339          * content.
2340          *
2341          * @param Content|null|bool|string $content
2342          * @return string The editable text form of the content.
2343          *
2344          * @throws MWException If $content is not an instance of TextContent and
2345          *   $this->allowNonTextContent is not true.
2346          */
2347         protected function toEditText( $content ) {
2348                 if ( $content === null || $content === false || is_string( $content ) ) {
2349                         return $content;
2350                 }
2351
2352                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2353                         throw new MWException( 'This content model is not supported: '
2354                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2355                 }
2356
2357                 return $content->serialize( $this->contentFormat );
2358         }
2359
2360         /**
2361          * Turns the given text into a Content object by unserializing it.
2362          *
2363          * If the resulting Content object is not of a type that can be edited using
2364          * the text base EditPage, an exception will be raised. Set
2365          * $this->allowNonTextContent to true to allow editing of non-textual
2366          * content.
2367          *
2368          * @param string|null|bool $text Text to unserialize
2369          * @return Content The content object created from $text. If $text was false
2370          *   or null, false resp. null will be  returned instead.
2371          *
2372          * @throws MWException If unserializing the text results in a Content
2373          *   object that is not an instance of TextContent and
2374          *   $this->allowNonTextContent is not true.
2375          */
2376         protected function toEditContent( $text ) {
2377                 if ( $text === false || $text === null ) {
2378                         return $text;
2379                 }
2380
2381                 $content = ContentHandler::makeContent( $text, $this->getTitle(),
2382                         $this->contentModel, $this->contentFormat );
2383
2384                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2385                         throw new MWException( 'This content model is not supported: '
2386                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2387                 }
2388
2389                 return $content;
2390         }
2391
2392         /**
2393          * Send the edit form and related headers to $wgOut
2394          * @param callable|null $formCallback That takes an OutputPage parameter; will be called
2395          *     during form output near the top, for captchas and the like.
2396          *
2397          * The $formCallback parameter is deprecated since MediaWiki 1.25. Please
2398          * use the EditPage::showEditForm:fields hook instead.
2399          */
2400         function showEditForm( $formCallback = null ) {
2401                 global $wgOut, $wgUser;
2402
2403                 # need to parse the preview early so that we know which templates are used,
2404                 # otherwise users with "show preview after edit box" will get a blank list
2405                 # we parse this near the beginning so that setHeaders can do the title
2406                 # setting work instead of leaving it in getPreviewText
2407                 $previewOutput = '';
2408                 if ( $this->formtype == 'preview' ) {
2409                         $previewOutput = $this->getPreviewText();
2410                 }
2411
2412                 Hooks::run( 'EditPage::showEditForm:initial', array( &$this, &$wgOut ) );
2413
2414                 $this->setHeaders();
2415
2416                 if ( $this->showHeader() === false ) {
2417                         return;
2418                 }
2419
2420                 $wgOut->addHTML( $this->editFormPageTop );
2421
2422                 if ( $wgUser->getOption( 'previewontop' ) ) {
2423                         $this->displayPreviewArea( $previewOutput, true );
2424                 }
2425
2426                 $wgOut->addHTML( $this->editFormTextTop );
2427
2428                 $showToolbar = true;
2429                 if ( $this->wasDeletedSinceLastEdit() ) {
2430                         if ( $this->formtype == 'save' ) {
2431                                 // Hide the toolbar and edit area, user can click preview to get it back
2432                                 // Add an confirmation checkbox and explanation.
2433                                 $showToolbar = false;
2434                         } else {
2435                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
2436                                         'deletedwhileediting' );
2437                         }
2438                 }
2439
2440                 // @todo add EditForm plugin interface and use it here!
2441                 //       search for textarea1 and textares2, and allow EditForm to override all uses.
2442                 $wgOut->addHTML( Html::openElement(
2443                         'form',
2444                         array(
2445                                 'id' => self::EDITFORM_ID,
2446                                 'name' => self::EDITFORM_ID,
2447                                 'method' => 'post',
2448                                 'action' => $this->getActionURL( $this->getContextTitle() ),
2449                                 'enctype' => 'multipart/form-data'
2450                         )
2451                 ) );
2452
2453                 if ( is_callable( $formCallback ) ) {
2454                         wfWarn( 'The $formCallback parameter to ' . __METHOD__ . 'is deprecated' );
2455                         call_user_func_array( $formCallback, array( &$wgOut ) );
2456                 }
2457
2458                 // Add an empty field to trip up spambots
2459                 $wgOut->addHTML(
2460                         Xml::openElement( 'div', array( 'id' => 'antispam-container', 'style' => 'display: none;' ) )
2461                         . Html::rawElement(
2462                                 'label',
2463                                 array( 'for' => 'wpAntiSpam' ),
2464                                 wfMessage( 'simpleantispam-label' )->parse()
2465                         )
2466                         . Xml::element(
2467                                 'input',
2468                                 array(
2469                                         'type' => 'text',
2470                                         'name' => 'wpAntispam',
2471                                         'id' => 'wpAntispam',
2472                                         'value' => ''
2473                                 )
2474                         )
2475                         . Xml::closeElement( 'div' )
2476                 );
2477
2478                 Hooks::run( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
2479
2480                 // Put these up at the top to ensure they aren't lost on early form submission
2481                 $this->showFormBeforeText();
2482
2483                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
2484                         $username = $this->lastDelete->user_name;
2485                         $comment = $this->lastDelete->log_comment;
2486
2487                         // It is better to not parse the comment at all than to have templates expanded in the middle
2488                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
2489                         $key = $comment === ''
2490                                 ? 'confirmrecreate-noreason'
2491                                 : 'confirmrecreate';
2492                         $wgOut->addHTML(
2493                                 '<div class="mw-confirm-recreate">' .
2494                                         wfMessage( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
2495                                 Xml::checkLabel( wfMessage( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
2496                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
2497                                 ) .
2498                                 '</div>'
2499                         );
2500                 }
2501
2502                 # When the summary is hidden, also hide them on preview/show changes
2503                 if ( $this->nosummary ) {
2504                         $wgOut->addHTML( Html::hidden( 'nosummary', true ) );
2505                 }
2506
2507                 # If a blank edit summary was previously provided, and the appropriate
2508                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
2509                 # user being bounced back more than once in the event that a summary
2510                 # is not required.
2511                 #####
2512                 # For a bit more sophisticated detection of blank summaries, hash the
2513                 # automatic one and pass that in the hidden field wpAutoSummary.
2514                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
2515                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
2516                 }
2517
2518                 if ( $this->undidRev ) {
2519                         $wgOut->addHTML( Html::hidden( 'wpUndidRevision', $this->undidRev ) );
2520                 }
2521
2522                 if ( $this->selfRedirect ) {
2523                         $wgOut->addHTML( Html::hidden( 'wpIgnoreSelfRedirect', true ) );
2524                 }
2525
2526                 if ( $this->hasPresetSummary ) {
2527                         // If a summary has been preset using &summary= we don't want to prompt for
2528                         // a different summary. Only prompt for a summary if the summary is blanked.
2529                         // (Bug 17416)
2530                         $this->autoSumm = md5( '' );
2531                 }
2532
2533                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
2534                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
2535
2536                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
2537                 $wgOut->addHTML( Html::hidden( 'parentRevId',
2538                         $this->parentRevId ?: $this->mArticle->getRevIdFetched() ) );
2539
2540                 $wgOut->addHTML( Html::hidden( 'format', $this->contentFormat ) );
2541                 $wgOut->addHTML( Html::hidden( 'model', $this->contentModel ) );
2542
2543                 if ( $this->section == 'new' ) {
2544                         $this->showSummaryInput( true, $this->summary );
2545                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
2546                 }
2547
2548                 $wgOut->addHTML( $this->editFormTextBeforeContent );
2549
2550                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
2551                         $wgOut->addHTML( EditPage::getEditToolbar( $this->mTitle ) );
2552                 }
2553
2554                 if ( $this->blankArticle ) {
2555                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankArticle', true ) );
2556                 }
2557
2558                 if ( $this->isConflict ) {
2559                         // In an edit conflict bypass the overridable content form method
2560                         // and fallback to the raw wpTextbox1 since editconflicts can't be
2561                         // resolved between page source edits and custom ui edits using the
2562                         // custom edit ui.
2563                         $this->textbox2 = $this->textbox1;
2564
2565                         $content = $this->getCurrentContent();
2566                         $this->textbox1 = $this->toEditText( $content );
2567
2568                         $this->showTextbox1();
2569                 } else {
2570                         $this->showContentForm();
2571                 }
2572
2573                 $wgOut->addHTML( $this->editFormTextAfterContent );
2574
2575                 $this->showStandardInputs();
2576
2577                 $this->showFormAfterText();
2578
2579                 $this->showTosSummary();
2580
2581                 $this->showEditTools();
2582
2583                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
2584
2585                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
2586                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
2587
2588                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
2589                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
2590
2591                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'limitreport' ),
2592                         self::getPreviewLimitReport( $this->mParserOutput ) ) );
2593
2594                 $wgOut->addModules( 'mediawiki.action.edit.collapsibleFooter' );
2595
2596                 if ( $this->isConflict ) {
2597                         try {
2598                                 $this->showConflict();
2599                         } catch ( MWContentSerializationException $ex ) {
2600                                 // this can't really happen, but be nice if it does.
2601                                 $msg = wfMessage(
2602                                         'content-failed-to-parse',
2603                                         $this->contentModel,
2604                                         $this->contentFormat,
2605                                         $ex->getMessage()
2606                                 );
2607                                 $wgOut->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
2608                         }
2609                 }
2610
2611                 // Marker for detecting truncated form data.  This must be the last
2612                 // parameter sent in order to be of use, so do not move me.
2613                 $wgOut->addHTML( Html::hidden( 'wpUltimateParam', true ) );
2614                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
2615
2616                 if ( !$wgUser->getOption( 'previewontop' ) ) {
2617                         $this->displayPreviewArea( $previewOutput, false );
2618                 }
2619
2620         }
2621
2622         /**
2623          * Extract the section title from current section text, if any.
2624          *
2625          * @param string $text
2626          * @return string|bool String or false
2627          */
2628         public static function extractSectionTitle( $text ) {
2629                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
2630                 if ( !empty( $matches[2] ) ) {
2631                         global $wgParser;
2632                         return $wgParser->stripSectionName( trim( $matches[2] ) );
2633                 } else {
2634                         return false;
2635                 }
2636         }
2637
2638         /**
2639          * @return bool
2640          */
2641         protected function showHeader() {
2642                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
2643                 global $wgAllowUserCss, $wgAllowUserJs;
2644
2645                 if ( $this->mTitle->isTalkPage() ) {
2646                         $wgOut->addWikiMsg( 'talkpagetext' );
2647                 }
2648
2649                 // Add edit notices
2650                 $editNotices = $this->mTitle->getEditNotices( $this->oldid );
2651                 if ( count( $editNotices ) ) {
2652                         $wgOut->addHTML( implode( "\n", $editNotices ) );
2653                 } else {
2654                         $msg = wfMessage( 'editnotice-notext' );
2655                         if ( !$msg->isDisabled() ) {
2656                                 $wgOut->addHTML(
2657                                         '<div class="mw-editnotice-notext">'
2658                                         . $msg->parseAsBlock()
2659                                         . '</div>'
2660                                 );
2661                         }
2662                 }
2663
2664                 if ( $this->isConflict ) {
2665                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
2666                         $this->edittime = $this->mArticle->getTimestamp();
2667                 } else {
2668                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
2669                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
2670                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
2671                                 // Someone is welcome to try refactoring though
2672                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2673                                 return false;
2674                         }
2675
2676                         if ( $this->section != '' && $this->section != 'new' ) {
2677                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2678                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 ); //FIXME: use Content object
2679                                         if ( $sectionTitle !== false ) {
2680                                                 $this->summary = "/* $sectionTitle */ ";
2681                                         }
2682                                 }
2683                         }
2684
2685                         if ( $this->missingComment ) {
2686                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2687                         }
2688
2689                         if ( $this->missingSummary && $this->section != 'new' ) {
2690                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
2691                         }
2692
2693                         if ( $this->missingSummary && $this->section == 'new' ) {
2694                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
2695                         }
2696
2697                         if ( $this->blankArticle ) {
2698                                 $wgOut->wrapWikiMsg( "<div id='mw-blankarticle'>\n$1\n</div>", 'blankarticle' );
2699                         }
2700
2701                         if ( $this->selfRedirect ) {
2702                                 $wgOut->wrapWikiMsg( "<div id='mw-selfredirect'>\n$1\n</div>", 'selfredirect' );
2703                         }
2704
2705                         if ( $this->hookError !== '' ) {
2706                                 $wgOut->addWikiText( $this->hookError );
2707                         }
2708
2709                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2710                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
2711                         }
2712
2713                         if ( $this->section != 'new' ) {
2714                                 $revision = $this->mArticle->getRevisionFetched();
2715                                 if ( $revision ) {
2716                                         // Let sysop know that this will make private content public if saved
2717
2718                                         if ( !$revision->userCan( Revision::DELETED_TEXT, $wgUser ) ) {
2719                                                 $wgOut->wrapWikiMsg(
2720                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
2721                                                         'rev-deleted-text-permission'
2722                                                 );
2723                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2724                                                 $wgOut->wrapWikiMsg(
2725                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
2726                                                         'rev-deleted-text-view'
2727                                                 );
2728                                         }
2729
2730                                         if ( !$revision->isCurrent() ) {
2731                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
2732                                                 $wgOut->addWikiMsg( 'editingold' );
2733                                         }
2734                                 } elseif ( $this->mTitle->exists() ) {
2735                                         // Something went wrong
2736
2737                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2738                                                 array( 'missing-revision', $this->oldid ) );
2739                                 }
2740                         }
2741                 }
2742
2743                 if ( wfReadOnly() ) {
2744                         $wgOut->wrapWikiMsg(
2745                                 "<div id=\"mw-read-only-warning\">\n$1\n</div>",
2746                                 array( 'readonlywarning', wfReadOnlyReason() )
2747                         );
2748                 } elseif ( $wgUser->isAnon() ) {
2749                         if ( $this->formtype != 'preview' ) {
2750                                 $wgOut->wrapWikiMsg(
2751                                         "<div id='mw-anon-edit-warning'>\n$1\n</div>",
2752                                         array( 'anoneditwarning',
2753                                                 // Log-in link
2754                                                 '{{fullurl:Special:UserLogin|returnto={{FULLPAGENAMEE}}}}',
2755                                                 // Sign-up link
2756                                                 '{{fullurl:Special:UserLogin/signup|returnto={{FULLPAGENAMEE}}}}' )
2757                                 );
2758                         } else {
2759                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>",
2760                                         'anonpreviewwarning'
2761                                 );
2762                         }
2763                 } else {
2764                         if ( $this->isCssJsSubpage ) {
2765                                 # Check the skin exists
2766                                 if ( $this->isWrongCaseCssJsPage ) {
2767                                         $wgOut->wrapWikiMsg(
2768                                                 "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>",
2769                                                 array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() )
2770                                         );
2771                                 }
2772                                 if ( $this->getTitle()->isSubpageOf( $wgUser->getUserPage() ) ) {
2773                                         if ( $this->formtype !== 'preview' ) {
2774                                                 if ( $this->isCssSubpage && $wgAllowUserCss ) {
2775                                                         $wgOut->wrapWikiMsg(
2776                                                                 "<div id='mw-usercssyoucanpreview'>\n$1\n</div>",
2777                                                                 array( 'usercssyoucanpreview' )
2778                                                         );
2779                                                 }
2780
2781                                                 if ( $this->isJsSubpage && $wgAllowUserJs ) {
2782                                                         $wgOut->wrapWikiMsg(
2783                                                                 "<div id='mw-userjsyoucanpreview'>\n$1\n</div>",
2784                                                                 array( 'userjsyoucanpreview' )
2785                                                         );
2786                                                 }
2787                                         }
2788                                 }
2789                         }
2790                 }
2791
2792                 if ( $this->mTitle->isProtected( 'edit' ) &&
2793                         MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== array( '' )
2794                 ) {
2795                         # Is the title semi-protected?
2796                         if ( $this->mTitle->isSemiProtected() ) {
2797                                 $noticeMsg = 'semiprotectedpagewarning';
2798                         } else {
2799                                 # Then it must be protected based on static groups (regular)
2800                                 $noticeMsg = 'protectedpagewarning';
2801                         }
2802                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2803                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2804                 }
2805                 if ( $this->mTitle->isCascadeProtected() ) {
2806                         # Is this page under cascading protection from some source pages?
2807                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
2808                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2809                         $cascadeSourcesCount = count( $cascadeSources );
2810                         if ( $cascadeSourcesCount > 0 ) {
2811                                 # Explain, and list the titles responsible
2812                                 foreach ( $cascadeSources as $page ) {
2813                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2814                                 }
2815                         }
2816                         $notice .= '</div>';
2817                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2818                 }
2819                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2820                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2821                                 array( 'lim' => 1,
2822                                         'showIfEmpty' => false,
2823                                         'msgKey' => array( 'titleprotectedwarning' ),
2824                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2825                 }
2826
2827                 if ( $this->kblength === false ) {
2828                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2829                 }
2830
2831                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2832                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2833                                 array(
2834                                         'longpageerror',
2835                                         $wgLang->formatNum( $this->kblength ),
2836                                         $wgLang->formatNum( $wgMaxArticleSize )
2837                                 )
2838                         );
2839                 } else {
2840                         if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
2841                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2842                                         array(
2843                                                 'longpage-hint',
2844                                                 $wgLang->formatSize( strlen( $this->textbox1 ) ),
2845                                                 strlen( $this->textbox1 )
2846                                         )
2847                                 );
2848                         }
2849                 }
2850                 # Add header copyright warning
2851                 $this->showHeaderCopyrightWarning();
2852
2853                 return true;
2854         }
2855
2856         /**
2857          * Standard summary input and label (wgSummary), abstracted so EditPage
2858          * subclasses may reorganize the form.
2859          * Note that you do not need to worry about the label's for=, it will be
2860          * inferred by the id given to the input. You can remove them both by
2861          * passing array( 'id' => false ) to $userInputAttrs.
2862          *
2863          * @param string $summary The value of the summary input
2864          * @param string $labelText The html to place inside the label
2865          * @param array $inputAttrs Array of attrs to use on the input
2866          * @param array $spanLabelAttrs Array of attrs to use on the span inside the label
2867          *
2868          * @return array An array in the format array( $label, $input )
2869          */
2870         function getSummaryInput( $summary = "", $labelText = null,
2871                 $inputAttrs = null, $spanLabelAttrs = null
2872         ) {
2873                 // Note: the maxlength is overridden in JS to 255 and to make it use UTF-8 bytes, not characters.
2874                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2875                         'id' => 'wpSummary',
2876                         'maxlength' => '200',
2877                         'tabindex' => '1',
2878                         'size' => 60,
2879                         'spellcheck' => 'true',
2880                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2881
2882                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2883                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2884                         'id' => "wpSummaryLabel"
2885                 );
2886
2887                 $label = null;
2888                 if ( $labelText ) {
2889                         $label = Xml::tags(
2890                                 'label',
2891                                 $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null,
2892                                 $labelText
2893                         );
2894                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2895                 }
2896
2897                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2898
2899                 return array( $label, $input );
2900         }
2901
2902         /**
2903          * @param bool $isSubjectPreview True if this is the section subject/title
2904          *   up top, or false if this is the comment summary
2905          *   down below the textarea
2906          * @param string $summary The text of the summary to display
2907          */
2908         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2909                 global $wgOut, $wgContLang;
2910                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2911                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2912                 if ( $isSubjectPreview ) {
2913                         if ( $this->nosummary ) {
2914                                 return;
2915                         }
2916                 } else {
2917                         if ( !$this->mShowSummaryField ) {
2918                                 return;
2919                         }
2920                 }
2921                 $summary = $wgContLang->recodeForEdit( $summary );
2922                 $labelText = wfMessage( $isSubjectPreview ? 'subject' : 'summary' )->parse();
2923                 list( $label, $input ) = $this->getSummaryInput(
2924                         $summary,
2925                         $labelText,
2926                         array( 'class' => $summaryClass ),
2927                         array()
2928                 );
2929                 $wgOut->addHTML( "{$label} {$input}" );
2930         }
2931
2932         /**
2933          * @param bool $isSubjectPreview True if this is the section subject/title
2934          *   up top, or false if this is the comment summary
2935          *   down below the textarea
2936          * @param string $summary The text of the summary to display
2937          * @return string
2938          */
2939         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2940                 // avoid spaces in preview, gets always trimmed on save
2941                 $summary = trim( $summary );
2942                 if ( !$summary || ( !$this->preview && !$this->diff ) ) {
2943                         return "";
2944                 }
2945
2946                 global $wgParser;
2947
2948                 if ( $isSubjectPreview ) {
2949                         $summary = wfMessage( 'newsectionsummary' )->rawParams( $wgParser->stripSectionName( $summary ) )
2950                                 ->inContentLanguage()->text();
2951                 }
2952
2953                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2954
2955                 $summary = wfMessage( $message )->parse()
2956                         . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2957                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2958         }
2959
2960         protected function showFormBeforeText() {
2961                 global $wgOut;
2962                 $section = htmlspecialchars( $this->section );
2963                 $wgOut->addHTML( <<<HTML
2964 <input type='hidden' value="{$section}" name="wpSection"/>
2965 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2966 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2967 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2968
2969 HTML
2970                 );
2971                 if ( !$this->checkUnicodeCompliantBrowser() ) {
2972                         $wgOut->addHTML( Html::hidden( 'safemode', '1' ) );
2973                 }
2974         }
2975
2976         protected function showFormAfterText() {
2977                 global $wgOut, $wgUser;
2978                 /**
2979                  * To make it harder for someone to slip a user a page
2980                  * which submits an edit form to the wiki without their
2981                  * knowledge, a random token is associated with the login
2982                  * session. If it's not passed back with the submission,
2983                  * we won't save the page, or render user JavaScript and
2984                  * CSS previews.
2985                  *
2986                  * For anon editors, who may not have a session, we just
2987                  * include the constant suffix to prevent editing from
2988                  * broken text-mangling proxies.
2989                  */
2990                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2991         }
2992
2993         /**
2994          * Subpage overridable method for printing the form for page content editing
2995          * By default this simply outputs wpTextbox1
2996          * Subclasses can override this to provide a custom UI for editing;
2997          * be it a form, or simply wpTextbox1 with a modified content that will be
2998          * reverse modified when extracted from the post data.
2999          * Note that this is basically the inverse for importContentFormData
3000          */
3001         protected function showContentForm() {
3002                 $this->showTextbox1();
3003         }
3004
3005         /**
3006          * Method to output wpTextbox1
3007          * The $textoverride method can be used by subclasses overriding showContentForm
3008          * to pass back to this method.
3009          *
3010          * @param array $customAttribs Array of html attributes to use in the textarea
3011          * @param string $textoverride Optional text to override $this->textarea1 with
3012          */
3013         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
3014                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
3015                         $attribs = array( 'style' => 'display:none;' );
3016                 } else {
3017                         $classes = array(); // Textarea CSS
3018                         if ( $this->mTitle->isProtected( 'edit' ) &&
3019                                 MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== array( '' )
3020                         ) {
3021                                 # Is the title semi-protected?
3022                                 if ( $this->mTitle->isSemiProtected() ) {
3023                                         $classes[] = 'mw-textarea-sprotected';
3024                                 } else {
3025                                         # Then it must be protected based on static groups (regular)
3026                                         $classes[] = 'mw-textarea-protected';
3027                                 }
3028                                 # Is the title cascade-protected?
3029                                 if ( $this->mTitle->isCascadeProtected() ) {
3030                                         $classes[] = 'mw-textarea-cprotected';
3031                                 }
3032                         }
3033
3034                         $attribs = array( 'tabindex' => 1 );
3035
3036                         if ( is_array( $customAttribs ) ) {
3037                                 $attribs += $customAttribs;
3038                         }
3039
3040                         if ( count( $classes ) ) {
3041                                 if ( isset( $attribs['class'] ) ) {
3042                                         $classes[] = $attribs['class'];
3043                                 }
3044                                 $attribs['class'] = implode( ' ', $classes );
3045                         }
3046                 }
3047
3048                 $this->showTextbox(
3049                         $textoverride !== null ? $textoverride : $this->textbox1,
3050                         'wpTextbox1',
3051                         $attribs
3052                 );
3053         }
3054
3055         protected function showTextbox2() {
3056                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
3057         }
3058
3059         protected function showTextbox( $text, $name, $customAttribs = array() ) {
3060                 global $wgOut, $wgUser;
3061
3062                 $wikitext = $this->safeUnicodeOutput( $text );
3063                 if ( strval( $wikitext ) !== '' ) {
3064                         // Ensure there's a newline at the end, otherwise adding lines
3065                         // is awkward.
3066                         // But don't add a newline if the ext is empty, or Firefox in XHTML
3067                         // mode will show an extra newline. A bit annoying.
3068                         $wikitext .= "\n";
3069                 }
3070
3071                 $attribs = $customAttribs + array(
3072                         'accesskey' => ',',
3073                         'id' => $name,
3074                         'cols' => $wgUser->getIntOption( 'cols' ),
3075                         'rows' => $wgUser->getIntOption( 'rows' ),
3076                         // Avoid PHP notices when appending preferences
3077                         // (appending allows customAttribs['style'] to still work).
3078                         'style' => ''
3079                 );
3080
3081                 $pageLang = $this->mTitle->getPageLanguage();
3082                 $attribs['lang'] = $pageLang->getHtmlCode();
3083                 $attribs['dir'] = $pageLang->getDir();
3084
3085                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
3086         }
3087
3088         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
3089                 global $wgOut;
3090                 $classes = array();
3091                 if ( $isOnTop ) {
3092                         $classes[] = 'ontop';
3093                 }
3094
3095                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
3096
3097                 if ( $this->formtype != 'preview' ) {
3098                         $attribs['style'] = 'display: none;';
3099                 }
3100
3101                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
3102
3103                 if ( $this->formtype == 'preview' ) {
3104                         $this->showPreview( $previewOutput );
3105                 } else {
3106                         // Empty content container for LivePreview
3107                         $pageViewLang = $this->mTitle->getPageViewLanguage();
3108                         $attribs = array( 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3109                                 'class' => 'mw-content-' . $pageViewLang->getDir() );
3110                         $wgOut->addHTML( Html::rawElement( 'div', $attribs ) );
3111                 }
3112
3113                 $wgOut->addHTML( '</div>' );
3114
3115                 if ( $this->formtype == 'diff' ) {
3116                         try {
3117                                 $this->showDiff();
3118                         } catch ( MWContentSerializationException $ex ) {
3119                                 $msg = wfMessage(
3120                                         'content-failed-to-parse',
3121                                         $this->contentModel,
3122                                         $this->contentFormat,
3123                                         $ex->getMessage()
3124                                 );
3125                                 $wgOut->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
3126                         }
3127                 }
3128         }
3129
3130         /**
3131          * Append preview output to $wgOut.
3132          * Includes category rendering if this is a category page.
3133          *
3134          * @param string $text The HTML to be output for the preview.
3135          */
3136         protected function showPreview( $text ) {
3137                 global $wgOut;
3138                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
3139                         $this->mArticle->openShowCategory();
3140                 }
3141                 # This hook seems slightly odd here, but makes things more
3142                 # consistent for extensions.
3143                 Hooks::run( 'OutputPageBeforeHTML', array( &$wgOut, &$text ) );
3144                 $wgOut->addHTML( $text );
3145                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
3146                         $this->mArticle->closeShowCategory();
3147                 }
3148         }
3149
3150         /**
3151          * Get a diff between the current contents of the edit box and the
3152          * version of the page we're editing from.
3153          *
3154          * If this is a section edit, we'll replace the section as for final
3155          * save and then make a comparison.
3156          */
3157         function showDiff() {
3158                 global $wgUser, $wgContLang, $wgOut;
3159
3160                 $oldtitlemsg = 'currentrev';
3161                 # if message does not exist, show diff against the preloaded default
3162                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
3163                         $oldtext = $this->mTitle->getDefaultMessageText();
3164                         if ( $oldtext !== false ) {
3165                                 $oldtitlemsg = 'defaultmessagetext';
3166                                 $oldContent = $this->toEditContent( $oldtext );
3167                         } else {
3168                                 $oldContent = null;
3169                         }
3170                 } else {
3171                         $oldContent = $this->getCurrentContent();
3172                 }
3173
3174                 $textboxContent = $this->toEditContent( $this->textbox1 );
3175
3176                 $newContent = $this->mArticle->replaceSectionContent(
3177                                                         $this->section, $textboxContent,
3178                                                         $this->summary, $this->edittime );
3179
3180                 if ( $newContent ) {
3181                         ContentHandler::runLegacyHooks( 'EditPageGetDiffText', array( $this, &$newContent ) );
3182                         Hooks::run( 'EditPageGetDiffContent', array( $this, &$newContent ) );
3183
3184                         $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
3185                         $newContent = $newContent->preSaveTransform( $this->mTitle, $wgUser, $popts );
3186                 }
3187
3188                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
3189                         $oldtitle = wfMessage( $oldtitlemsg )->parse();
3190                         $newtitle = wfMessage( 'yourtext' )->parse();
3191
3192                         if ( !$oldContent ) {
3193                                 $oldContent = $newContent->getContentHandler()->makeEmptyContent();
3194                         }
3195
3196                         if ( !$newContent ) {
3197                                 $newContent = $oldContent->getContentHandler()->makeEmptyContent();
3198                         }
3199
3200                         $de = $oldContent->getContentHandler()->createDifferenceEngine( $this->mArticle->getContext() );
3201                         $de->setContent( $oldContent, $newContent );
3202
3203                         $difftext = $de->getDiff( $oldtitle, $newtitle );
3204                         $de->showDiffStyle();
3205                 } else {
3206                         $difftext = '';
3207                 }
3208
3209                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
3210         }
3211
3212         /**
3213          * Show the header copyright warning.
3214          */
3215         protected function showHeaderCopyrightWarning() {
3216                 $msg = 'editpage-head-copy-warn';
3217                 if ( !wfMessage( $msg )->isDisabled() ) {
3218                         global $wgOut;
3219                         $wgOut->wrapWikiMsg( "<div class='editpage-head-copywarn'>\n$1\n</div>",
3220                                 'editpage-head-copy-warn' );
3221                 }
3222         }
3223
3224         /**
3225          * Give a chance for site and per-namespace customizations of
3226          * terms of service summary link that might exist separately
3227          * from the copyright notice.
3228          *
3229          * This will display between the save button and the edit tools,
3230          * so should remain short!
3231          */
3232         protected function showTosSummary() {
3233                 $msg = 'editpage-tos-summary';
3234                 Hooks::run( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
3235                 if ( !wfMessage( $msg )->isDisabled() ) {
3236                         global $wgOut;
3237                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
3238                         $wgOut->addWikiMsg( $msg );
3239                         $wgOut->addHTML( '</div>' );
3240                 }
3241         }
3242
3243         protected function showEditTools() {
3244                 global $wgOut;
3245                 $wgOut->addHTML( '<div class="mw-editTools">' .
3246                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
3247                         '</div>' );
3248         }
3249
3250         /**
3251          * Get the copyright warning
3252          *
3253          * Renamed to getCopyrightWarning(), old name kept around for backwards compatibility
3254          * @return string
3255          */
3256         protected function getCopywarn() {
3257                 return self::getCopyrightWarning( $this->mTitle );
3258         }
3259
3260         /**
3261          * Get the copyright warning, by default returns wikitext
3262          *
3263          * @param Title $title
3264          * @param string $format Output format, valid values are any function of a Message object
3265          * @return string
3266          */
3267         public static function getCopyrightWarning( $title, $format = 'plain' ) {
3268                 global $wgRightsText;
3269                 if ( $wgRightsText ) {
3270                         $copywarnMsg = array( 'copyrightwarning',
3271                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]',
3272                                 $wgRightsText );
3273                 } else {
3274                         $copywarnMsg = array( 'copyrightwarning2',
3275                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]' );
3276                 }
3277                 // Allow for site and per-namespace customization of contribution/copyright notice.
3278                 Hooks::run( 'EditPageCopyrightWarning', array( $title, &$copywarnMsg ) );
3279
3280                 return "<div id=\"editpage-copywarn\">\n" .
3281                         call_user_func_array( 'wfMessage', $copywarnMsg )->$format() . "\n</div>";
3282         }
3283
3284         /**
3285          * Get the Limit report for page previews
3286          *
3287          * @since 1.22
3288          * @param ParserOutput $output ParserOutput object from the parse
3289          * @return string HTML
3290          */
3291         public static function getPreviewLimitReport( $output ) {
3292                 if ( !$output || !$output->getLimitReportData() ) {
3293                         return '';
3294                 }
3295
3296                 $limitReport = Html::rawElement( 'div', array( 'class' => 'mw-limitReportExplanation' ),
3297                         wfMessage( 'limitreport-title' )->parseAsBlock()
3298                 );
3299
3300                 // Show/hide animation doesn't work correctly on a table, so wrap it in a div.
3301                 $limitReport .= Html::openElement( 'div', array( 'class' => 'preview-limit-report-wrapper' ) );
3302
3303                 $limitReport .= Html::openElement( 'table', array(
3304                         'class' => 'preview-limit-report wikitable'
3305                 ) ) .
3306                         Html::openElement( 'tbody' );
3307
3308                 foreach ( $output->getLimitReportData() as $key => $value ) {
3309                         if ( Hooks::run( 'ParserLimitReportFormat',
3310                                 array( $key, &$value, &$limitReport, true, true )
3311                         ) ) {
3312                                 $keyMsg = wfMessage( $key );
3313                                 $valueMsg = wfMessage( array( "$key-value-html", "$key-value" ) );
3314                                 if ( !$valueMsg->exists() ) {
3315                                         $valueMsg = new RawMessage( '$1' );
3316                                 }
3317                                 if ( !$keyMsg->isDisabled() && !$valueMsg->isDisabled() ) {
3318                                         $limitReport .= Html::openElement( 'tr' ) .
3319                                                 Html::rawElement( 'th', null, $keyMsg->parse() ) .
3320                                                 Html::rawElement( 'td', null, $valueMsg->params( $value )->parse() ) .
3321                                                 Html::closeElement( 'tr' );
3322                                 }
3323                         }
3324                 }
3325
3326                 $limitReport .= Html::closeElement( 'tbody' ) .
3327                         Html::closeElement( 'table' ) .
3328                         Html::closeElement( 'div' );
3329
3330                 return $limitReport;
3331         }
3332
3333         protected function showStandardInputs( &$tabindex = 2 ) {
3334                 global $wgOut;
3335                 $wgOut->addHTML( "<div class='editOptions'>\n" );
3336
3337                 if ( $this->section != 'new' ) {
3338                         $this->showSummaryInput( false, $this->summary );
3339                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
3340                 }
3341
3342                 $checkboxes = $this->getCheckboxes( $tabindex,
3343                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
3344                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
3345
3346                 // Show copyright warning.
3347                 $wgOut->addWikiText( $this->getCopywarn() );
3348                 $wgOut->addHTML( $this->editFormTextAfterWarn );
3349
3350                 $wgOut->addHTML( "<div class='editButtons'>\n" );
3351                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
3352
3353                 $cancel = $this->getCancelLink();
3354                 if ( $cancel !== '' ) {
3355                         $cancel .= Html::element( 'span',
3356                                 array( 'class' => 'mw-editButtons-pipe-separator' ),
3357                                 wfMessage( 'pipe-separator' )->text() );
3358                 }
3359
3360                 $message = wfMessage( 'edithelppage' )->inContentLanguage()->text();
3361                 $edithelpurl = Skin::makeInternalOrExternalUrl( $message );
3362                 $attrs = array(
3363                         'target' => 'helpwindow',
3364                         'href' => $edithelpurl,
3365                 );
3366                 $edithelp = Html::linkButton( wfMessage( 'edithelp' )->text(),
3367                         $attrs, array( 'mw-ui-quiet' ) ) .
3368                         wfMessage( 'word-separator' )->escaped() .
3369                         wfMessage( 'newwindow' )->parse();
3370
3371                 $wgOut->addHTML( "      <span class='cancelLink'>{$cancel}</span>\n" );
3372                 $wgOut->addHTML( "      <span class='editHelp'>{$edithelp}</span>\n" );
3373                 $wgOut->addHTML( "</div><!-- editButtons -->\n" );
3374
3375                 Hooks::run( 'EditPage::showStandardInputs:options', array( $this, $wgOut, &$tabindex ) );
3376
3377                 $wgOut->addHTML( "</div><!-- editOptions -->\n" );
3378         }
3379
3380         /**
3381          * Show an edit conflict. textbox1 is already shown in showEditForm().
3382          * If you want to use another entry point to this function, be careful.
3383          */
3384         protected function showConflict() {
3385                 global $wgOut;
3386
3387                 if ( Hooks::run( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
3388                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3389
3390                         $content1 = $this->toEditContent( $this->textbox1 );
3391                         $content2 = $this->toEditContent( $this->textbox2 );
3392
3393                         $handler = ContentHandler::getForModelID( $this->contentModel );
3394                         $de = $handler->createDifferenceEngine( $this->mArticle->getContext() );
3395                         $de->setContent( $content2, $content1 );
3396                         $de->showDiff(
3397                                 wfMessage( 'yourtext' )->parse(),
3398                                 wfMessage( 'storedversion' )->text()
3399                         );
3400
3401                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3402                         $this->showTextbox2();
3403                 }
3404         }
3405
3406         /**
3407          * @return string
3408          */
3409         public function getCancelLink() {
3410                 $cancelParams = array();
3411                 if ( !$this->isConflict && $this->oldid > 0 ) {
3412                         $cancelParams['oldid'] = $this->oldid;
3413                 }
3414                 $attrs = array( 'id' => 'mw-editform-cancel' );
3415
3416                 return Linker::linkKnown(
3417                         $this->getContextTitle(),
3418                         wfMessage( 'cancel' )->parse(),
3419                         Html::buttonAttributes( $attrs, array( 'mw-ui-quiet' ) ),
3420                         $cancelParams
3421                 );
3422         }
3423
3424         /**
3425          * Returns the URL to use in the form's action attribute.
3426          * This is used by EditPage subclasses when simply customizing the action
3427          * variable in the constructor is not enough. This can be used when the
3428          * EditPage lives inside of a Special page rather than a custom page action.
3429          *
3430          * @param Title $title Title object for which is being edited (where we go to for &action= links)
3431          * @return string
3432          */
3433         protected function getActionURL( Title $title ) {
3434                 return $title->getLocalURL( array( 'action' => $this->action ) );
3435         }
3436
3437         /**
3438          * Check if a page was deleted while the user was editing it, before submit.
3439          * Note that we rely on the logging table, which hasn't been always there,
3440          * but that doesn't matter, because this only applies to brand new
3441          * deletes.
3442          * @return bool
3443          */
3444         protected function wasDeletedSinceLastEdit() {
3445                 if ( $this->deletedSinceEdit !== null ) {
3446                         return $this->deletedSinceEdit;
3447                 }
3448
3449                 $this->deletedSinceEdit = false;
3450
3451                 if ( !$this->mTitle->exists() && $this->mTitle->isDeletedQuick() ) {
3452                         $this->lastDelete = $this->getLastDelete();
3453                         if ( $this->lastDelete ) {
3454                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
3455                                 if ( $deleteTime > $this->starttime ) {
3456                                         $this->deletedSinceEdit = true;
3457                                 }
3458                         }
3459                 }
3460
3461                 return $this->deletedSinceEdit;
3462         }
3463
3464         /**
3465          * @return bool|stdClass
3466          */
3467         protected function getLastDelete() {
3468                 $dbr = wfGetDB( DB_SLAVE );
3469                 $data = $dbr->selectRow(
3470                         array( 'logging', 'user' ),
3471                         array(
3472                                 'log_type',
3473                                 'log_action',
3474                                 'log_timestamp',
3475                                 'log_user',
3476                                 'log_namespace',
3477                                 'log_title',
3478                                 'log_comment',
3479                                 'log_params',
3480                                 'log_deleted',
3481                                 'user_name'
3482                         ), array(
3483                                 'log_namespace' => $this->mTitle->getNamespace(),
3484                                 'log_title' => $this->mTitle->getDBkey(),
3485                                 'log_type' => 'delete',
3486                                 'log_action' => 'delete',
3487                                 'user_id=log_user'
3488                         ),
3489                         __METHOD__,
3490                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
3491                 );
3492                 // Quick paranoid permission checks...
3493                 if ( is_object( $data ) ) {
3494                         if ( $data->log_deleted & LogPage::DELETED_USER ) {
3495                                 $data->user_name = wfMessage( 'rev-deleted-user' )->escaped();
3496                         }
3497
3498                         if ( $data->log_deleted & LogPage::DELETED_COMMENT ) {
3499                                 $data->log_comment = wfMessage( 'rev-deleted-comment' )->escaped();
3500                         }
3501                 }
3502
3503                 return $data;
3504         }
3505
3506         /**
3507          * Get the rendered text for previewing.
3508          * @throws MWException
3509          * @return string
3510          */
3511         function getPreviewText() {
3512                 global $wgOut, $wgUser, $wgRawHtml, $wgLang;
3513                 global $wgAllowUserCss, $wgAllowUserJs;
3514
3515                 $stats = $wgOut->getContext()->getStats();
3516
3517                 if ( $wgRawHtml && !$this->mTokenOk ) {
3518                         // Could be an offsite preview attempt. This is very unsafe if
3519                         // HTML is enabled, as it could be an attack.
3520                         $parsedNote = '';
3521                         if ( $this->textbox1 !== '' ) {
3522                                 // Do not put big scary notice, if previewing the empty
3523                                 // string, which happens when you initially edit
3524                                 // a category page, due to automatic preview-on-open.
3525                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
3526                                         wfMessage( 'session_fail_preview_html' )->text() . "</div>", true, /* interface */true );
3527                         }
3528                         $stats->increment( 'edit.failures.session_loss' );
3529                         return $parsedNote;
3530                 }
3531
3532                 $note = '';
3533
3534                 try {
3535                         $content = $this->toEditContent( $this->textbox1 );
3536
3537                         $previewHTML = '';
3538                         if ( !Hooks::run(
3539                                 'AlternateEditPreview',
3540                                 array( $this, &$content, &$previewHTML, &$this->mParserOutput ) )
3541                         ) {
3542                                 return $previewHTML;
3543                         }
3544
3545                         # provide a anchor link to the editform
3546                         $continueEditing = '<span class="mw-continue-editing">' .
3547                                 '[[#' . self::EDITFORM_ID . '|' . $wgLang->getArrow() . ' ' .
3548                                 wfMessage( 'continue-editing' )->text() . ']]</span>';
3549                         if ( $this->mTriedSave && !$this->mTokenOk ) {
3550                                 if ( $this->mTokenOkExceptSuffix ) {
3551                                         $note = wfMessage( 'token_suffix_mismatch' )->plain();
3552                                         $stats->increment( 'edit.failures.bad_token' );
3553                                 } else {
3554                                         $note = wfMessage( 'session_fail_preview' )->plain();
3555                                         $stats->increment( 'edit.failures.session_loss' );
3556                                 }
3557                         } elseif ( $this->incompleteForm ) {
3558                                 $note = wfMessage( 'edit_form_incomplete' )->plain();
3559                                 if ( $this->mTriedSave ) {
3560                                         $stats->increment( 'edit.failures.incomplete_form' );
3561                                 }
3562                         } else {
3563                                 $note = wfMessage( 'previewnote' )->plain() . ' ' . $continueEditing;
3564                         }
3565
3566                         $parserOptions = $this->mArticle->makeParserOptions( $this->mArticle->getContext() );
3567                         $parserOptions->setIsPreview( true );
3568                         $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
3569
3570                         # don't parse non-wikitext pages, show message about preview
3571                         if ( $this->mTitle->isCssJsSubpage() || $this->mTitle->isCssOrJsPage() ) {
3572                                 if ( $this->mTitle->isCssJsSubpage() ) {
3573                                         $level = 'user';
3574                                 } elseif ( $this->mTitle->isCssOrJsPage() ) {
3575                                         $level = 'site';
3576                                 } else {
3577                                         $level = false;
3578                                 }
3579
3580                                 if ( $content->getModel() == CONTENT_MODEL_CSS ) {
3581                                         $format = 'css';
3582                                         if ( $level === 'user' && !$wgAllowUserCss ) {
3583                                                 $format = false;
3584                                         }
3585                                 } elseif ( $content->getModel() == CONTENT_MODEL_JAVASCRIPT ) {
3586                                         $format = 'js';
3587                                         if ( $level === 'user' && !$wgAllowUserJs ) {
3588                                                 $format = false;
3589                                         }
3590                                 } else {
3591                                         $format = false;
3592                                 }
3593
3594                                 # Used messages to make sure grep find them:
3595                                 # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
3596                                 if ( $level && $format ) {
3597                                         $note = "<div id='mw-{$level}{$format}preview'>" .
3598                                                 wfMessage( "{$level}{$format}preview" )->text() .
3599                                                 ' ' . $continueEditing . "</div>";
3600                                 }
3601                         }
3602
3603                         # If we're adding a comment, we need to show the
3604                         # summary as the headline
3605                         if ( $this->section === "new" && $this->summary !== "" ) {
3606                                 $content = $content->addSectionHeader( $this->summary );
3607                         }
3608
3609                         $hook_args = array( $this, &$content );
3610                         ContentHandler::runLegacyHooks( 'EditPageGetPreviewText', $hook_args );
3611                         Hooks::run( 'EditPageGetPreviewContent', $hook_args );
3612
3613                         $parserOptions->enableLimitReport();
3614
3615                         # For CSS/JS pages, we should have called the ShowRawCssJs hook here.
3616                         # But it's now deprecated, so never mind
3617
3618                         $pstContent = $content->preSaveTransform( $this->mTitle, $wgUser, $parserOptions );
3619                         $scopedCallback = $parserOptions->setupFakeRevision(
3620                                 $this->mTitle, $pstContent, $wgUser );
3621                         $parserOutput = $pstContent->getParserOutput( $this->mTitle, null, $parserOptions );
3622
3623                         # Try to stash the edit for the final submission step
3624                         # @todo: different date format preferences cause cache misses
3625                         ApiStashEdit::stashEditFromPreview(
3626                                 $this->getArticle(), $content, $pstContent,
3627                                 $parserOutput, $parserOptions, $parserOptions, wfTimestampNow()
3628                         );
3629
3630                         $parserOutput->setEditSectionTokens( false ); // no section edit links
3631                         $previewHTML = $parserOutput->getText();
3632                         $this->mParserOutput = $parserOutput;
3633                         $wgOut->addParserOutputMetadata( $parserOutput );
3634
3635                         if ( count( $parserOutput->getWarnings() ) ) {
3636                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
3637                         }
3638                 } catch ( MWContentSerializationException $ex ) {
3639                         $m = wfMessage(
3640                                 'content-failed-to-parse',
3641                                 $this->contentModel,
3642                                 $this->contentFormat,
3643                                 $ex->getMessage()
3644                         );
3645                         $note .= "\n\n" . $m->parse();
3646                         $previewHTML = '';
3647                 }
3648
3649                 if ( $this->isConflict ) {
3650                         $conflict = '<h2 id="mw-previewconflict">'
3651                                 . wfMessage( 'previewconflict' )->escaped() . "</h2>\n";
3652                 } else {
3653                         $conflict = '<hr />';
3654                 }
3655
3656                 $previewhead = "<div class='previewnote'>\n" .
3657                         '<h2 id="mw-previewheader">' . wfMessage( 'preview' )->escaped() . "</h2>" .
3658                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
3659
3660                 $pageViewLang = $this->mTitle->getPageViewLanguage();
3661                 $attribs = array( 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3662                         'class' => 'mw-content-' . $pageViewLang->getDir() );
3663                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
3664
3665                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
3666         }
3667
3668         /**
3669          * @return array
3670          */
3671         function getTemplates() {
3672                 if ( $this->preview || $this->section != '' ) {
3673                         $templates = array();
3674                         if ( !isset( $this->mParserOutput ) ) {
3675                                 return $templates;
3676                         }
3677                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
3678                                 foreach ( array_keys( $template ) as $dbk ) {
3679                                         $templates[] = Title::makeTitle( $ns, $dbk );
3680                                 }
3681                         }
3682                         return $templates;
3683                 } else {
3684                         return $this->mTitle->getTemplateLinksFrom();
3685                 }
3686         }
3687
3688         /**
3689          * Shows a bulletin board style toolbar for common editing functions.
3690          * It can be disabled in the user preferences.
3691          *
3692          * @param $title Title object for the page being edited (optional)
3693          * @return string
3694          */
3695         static function getEditToolbar( $title = null ) {
3696                 global $wgContLang, $wgOut;
3697                 global $wgEnableUploads, $wgForeignFileRepos;
3698
3699                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
3700                 $showSignature = true;
3701                 if ( $title ) {
3702                          $showSignature = MWNamespace::wantSignatures( $title->getNamespace() );
3703                 }
3704
3705                 /**
3706                  * $toolarray is an array of arrays each of which includes the
3707                  * opening tag, the closing tag, optionally a sample text that is
3708                  * inserted between the two when no selection is highlighted
3709                  * and.  The tip text is shown when the user moves the mouse
3710                  * over the button.
3711                  *
3712                  * Images are defined in ResourceLoaderEditToolbarModule.
3713                  */
3714                 $toolarray = array(
3715                         array(
3716                                 'id'     => 'mw-editbutton-bold',
3717                                 'open'   => '\'\'\'',
3718                                 'close'  => '\'\'\'',
3719                                 'sample' => wfMessage( 'bold_sample' )->text(),
3720                                 'tip'    => wfMessage( 'bold_tip' )->text(),
3721                         ),
3722                         array(
3723                                 'id'     => 'mw-editbutton-italic',
3724                                 'open'   => '\'\'',
3725                                 'close'  => '\'\'',
3726                                 'sample' => wfMessage( 'italic_sample' )->text(),
3727                                 'tip'    => wfMessage( 'italic_tip' )->text(),
3728                         ),
3729                         array(
3730                                 'id'     => 'mw-editbutton-link',
3731                                 'open'   => '[[',
3732                                 'close'  => ']]',
3733                                 'sample' => wfMessage( 'link_sample' )->text(),
3734                                 'tip'    => wfMessage( 'link_tip' )->text(),
3735                         ),
3736                         array(
3737                                 'id'     => 'mw-editbutton-extlink',
3738                                 'open'   => '[',
3739                                 'close'  => ']',
3740                                 'sample' => wfMessage( 'extlink_sample' )->text(),
3741                                 'tip'    => wfMessage( 'extlink_tip' )->text(),
3742                         ),
3743                         array(
3744                                 'id'     => 'mw-editbutton-headline',
3745                                 'open'   => "\n== ",
3746                                 'close'  => " ==\n",
3747                                 'sample' => wfMessage( 'headline_sample' )->text(),
3748                                 'tip'    => wfMessage( 'headline_tip' )->text(),
3749                         ),
3750                         $imagesAvailable ? array(
3751                                 'id'     => 'mw-editbutton-image',
3752                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
3753                                 'close'  => ']]',
3754                                 'sample' => wfMessage( 'image_sample' )->text(),
3755                                 'tip'    => wfMessage( 'image_tip' )->text(),
3756                         ) : false,
3757                         $imagesAvailable ? array(
3758                                 'id'     => 'mw-editbutton-media',
3759                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
3760                                 'close'  => ']]',
3761                                 'sample' => wfMessage( 'media_sample' )->text(),
3762                                 'tip'    => wfMessage( 'media_tip' )->text(),
3763                         ) : false,
3764                         array(
3765                                 'id'     => 'mw-editbutton-nowiki',
3766                                 'open'   => "<nowiki>",
3767                                 'close'  => "</nowiki>",
3768                                 'sample' => wfMessage( 'nowiki_sample' )->text(),
3769                                 'tip'    => wfMessage( 'nowiki_tip' )->text(),
3770                         ),
3771                         $showSignature ? array(
3772                                 'id'     => 'mw-editbutton-signature',
3773                                 'open'   => '--~~~~',
3774                                 'close'  => '',
3775                                 'sample' => '',
3776                                 'tip'    => wfMessage( 'sig_tip' )->text(),
3777                         ) : false,
3778                         array(
3779                                 'id'     => 'mw-editbutton-hr',
3780                                 'open'   => "\n----\n",
3781                                 'close'  => '',
3782                                 'sample' => '',
3783                                 'tip'    => wfMessage( 'hr_tip' )->text(),
3784                         )
3785                 );
3786
3787                 $script = 'mw.loader.using("mediawiki.toolbar", function () {';
3788                 foreach ( $toolarray as $tool ) {
3789                         if ( !$tool ) {
3790                                 continue;
3791                         }
3792
3793                         $params = array(
3794                                 // Images are defined in ResourceLoaderEditToolbarModule
3795                                 false,
3796                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
3797                                 // Older browsers show a "speedtip" type message only for ALT.
3798                                 // Ideally these should be different, realistically they
3799                                 // probably don't need to be.
3800                                 $tool['tip'],
3801                                 $tool['open'],
3802                                 $tool['close'],
3803                                 $tool['sample'],
3804                                 $tool['id'],
3805                         );
3806
3807                         $script .= Xml::encodeJsCall(
3808                                 'mw.toolbar.addButton',
3809                                 $params,
3810                                 ResourceLoader::inDebugMode()
3811                         );
3812                 }
3813
3814                 $script .= '});';
3815                 $wgOut->addScript( ResourceLoader::makeInlineScript( $script ) );
3816
3817                 $toolbar = '<div id="toolbar"></div>';
3818
3819                 Hooks::run( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
3820
3821                 return $toolbar;
3822         }
3823
3824         /**
3825          * Returns an array of html code of the following checkboxes:
3826          * minor and watch
3827          *
3828          * @param int $tabindex Current tabindex
3829          * @param array $checked Array of checkbox => bool, where bool indicates the checked
3830          *                 status of the checkbox
3831          *
3832          * @return array
3833          */
3834         public function getCheckboxes( &$tabindex, $checked ) {
3835                 global $wgUser, $wgUseMediaWikiUIEverywhere;
3836
3837                 $checkboxes = array();
3838
3839                 // don't show the minor edit checkbox if it's a new page or section
3840                 if ( !$this->isNew ) {
3841                         $checkboxes['minor'] = '';
3842                         $minorLabel = wfMessage( 'minoredit' )->parse();
3843                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
3844                                 $attribs = array(
3845                                         'tabindex' => ++$tabindex,
3846                                         'accesskey' => wfMessage( 'accesskey-minoredit' )->text(),
3847                                         'id' => 'wpMinoredit',
3848                                 );
3849                                 $minorEditHtml =
3850                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
3851                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
3852                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
3853                                         ">{$minorLabel}</label>";
3854
3855                                 if ( $wgUseMediaWikiUIEverywhere ) {
3856                                         $checkboxes['minor'] = Html::openElement( 'div', array( 'class' => 'mw-ui-checkbox' ) ) .
3857                                                 $minorEditHtml .
3858                                         Html::closeElement( 'div' );
3859                                 } else {
3860                                         $checkboxes['minor'] = $minorEditHtml;
3861                                 }
3862                         }
3863                 }
3864
3865                 $watchLabel = wfMessage( 'watchthis' )->parse();
3866                 $checkboxes['watch'] = '';
3867                 if ( $wgUser->isLoggedIn() ) {
3868                         $attribs = array(
3869                                 'tabindex' => ++$tabindex,
3870                                 'accesskey' => wfMessage( 'accesskey-watch' )->text(),
3871                                 'id' => 'wpWatchthis',
3872                         );
3873                         $watchThisHtml =
3874                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
3875                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
3876                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
3877                                 ">{$watchLabel}</label>";
3878                         if ( $wgUseMediaWikiUIEverywhere ) {
3879                                 $checkboxes['watch'] = Html::openElement( 'div', array( 'class' => 'mw-ui-checkbox' ) ) .
3880                                         $watchThisHtml .
3881                                         Html::closeElement( 'div' );
3882                         } else {
3883                                 $checkboxes['watch'] = $watchThisHtml;
3884                         }
3885                 }
3886                 Hooks::run( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
3887                 return $checkboxes;
3888         }
3889
3890         /**
3891          * Returns an array of html code of the following buttons:
3892          * save, diff, preview and live
3893          *
3894          * @param int $tabindex Current tabindex
3895          *
3896          * @return array
3897          */
3898         public function getEditButtons( &$tabindex ) {
3899                 $buttons = array();
3900
3901                 $attribs = array(
3902                         'id' => 'wpSave',
3903                         'name' => 'wpSave',
3904                         'tabindex' => ++$tabindex,
3905                 ) + Linker::tooltipAndAccesskeyAttribs( 'save' );
3906                 $buttons['save'] = Html::submitButton( wfMessage( 'savearticle' )->text(),
3907                         $attribs, array( 'mw-ui-constructive' ) );
3908
3909                 ++$tabindex; // use the same for preview and live preview
3910                 $attribs = array(
3911                         'id' => 'wpPreview',
3912                         'name' => 'wpPreview',
3913                         'tabindex' => $tabindex,
3914                 ) + Linker::tooltipAndAccesskeyAttribs( 'preview' );
3915                 $buttons['preview'] = Html::submitButton( wfMessage( 'showpreview' )->text(),
3916                         $attribs );
3917                 $buttons['live'] = '';
3918
3919                 $attribs = array(
3920                         'id' => 'wpDiff',
3921                         'name' => 'wpDiff',
3922                         'tabindex' => ++$tabindex,
3923                 ) + Linker::tooltipAndAccesskeyAttribs( 'diff' );
3924                 $buttons['diff'] = Html::submitButton( wfMessage( 'showdiff' )->text(),
3925                         $attribs );
3926
3927                 Hooks::run( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
3928                 return $buttons;
3929         }
3930
3931         /**
3932          * Creates a basic error page which informs the user that
3933          * they have attempted to edit a nonexistent section.
3934          */
3935         function noSuchSectionPage() {
3936                 global $wgOut;
3937
3938                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3939
3940                 $res = wfMessage( 'nosuchsectiontext', $this->section )->parseAsBlock();
3941                 Hooks::run( 'EditPageNoSuchSection', array( &$this, &$res ) );
3942                 $wgOut->addHTML( $res );
3943
3944                 $wgOut->returnToMain( false, $this->mTitle );
3945         }
3946
3947         /**
3948          * Show "your edit contains spam" page with your diff and text
3949          *
3950          * @param string|array|bool $match Text (or array of texts) which triggered one or more filters
3951          */
3952         public function spamPageWithContent( $match = false ) {
3953                 global $wgOut, $wgLang;
3954                 $this->textbox2 = $this->textbox1;
3955
3956                 if ( is_array( $match ) ) {
3957                         $match = $wgLang->listToText( $match );
3958                 }
3959                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3960
3961                 $wgOut->addHTML( '<div id="spamprotected">' );
3962                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3963                 if ( $match ) {
3964                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3965                 }
3966                 $wgOut->addHTML( '</div>' );
3967
3968                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3969                 $this->showDiff();
3970
3971                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3972                 $this->showTextbox2();
3973
3974                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3975         }
3976
3977         /**
3978          * Check if the browser is on a blacklist of user-agents known to
3979          * mangle UTF-8 data on form submission. Returns true if Unicode
3980          * should make it through, false if it's known to be a problem.
3981          * @return bool
3982          */
3983         private function checkUnicodeCompliantBrowser() {
3984                 global $wgBrowserBlackList, $wgRequest;
3985
3986                 $currentbrowser = $wgRequest->getHeader( 'User-Agent' );
3987                 if ( $currentbrowser === false ) {
3988                         // No User-Agent header sent? Trust it by default...
3989                         return true;
3990                 }
3991
3992                 foreach ( $wgBrowserBlackList as $browser ) {
3993                         if ( preg_match( $browser, $currentbrowser ) ) {
3994                                 return false;
3995                         }
3996                 }
3997                 return true;
3998         }
3999
4000         /**
4001          * Filter an input field through a Unicode de-armoring process if it
4002          * came from an old browser with known broken Unicode editing issues.
4003          *
4004          * @param WebRequest $request
4005          * @param string $field
4006          * @return string
4007          */
4008         protected function safeUnicodeInput( $request, $field ) {
4009                 $text = rtrim( $request->getText( $field ) );
4010                 return $request->getBool( 'safemode' )
4011                         ? $this->unmakeSafe( $text )
4012                         : $text;
4013         }
4014
4015         /**
4016          * Filter an output field through a Unicode armoring process if it is
4017          * going to an old browser with known broken Unicode editing issues.
4018          *
4019          * @param string $text
4020          * @return string
4021          */
4022         protected function safeUnicodeOutput( $text ) {
4023                 global $wgContLang;
4024                 $codedText = $wgContLang->recodeForEdit( $text );
4025                 return $this->checkUnicodeCompliantBrowser()
4026                         ? $codedText
4027                         : $this->makeSafe( $codedText );
4028         }
4029
4030         /**
4031          * A number of web browsers are known to corrupt non-ASCII characters
4032          * in a UTF-8 text editing environment. To protect against this,
4033          * detected browsers will be served an armored version of the text,
4034          * with non-ASCII chars converted to numeric HTML character references.
4035          *
4036          * Preexisting such character references will have a 0 added to them
4037          * to ensure that round-trips do not alter the original data.
4038          *
4039          * @param string $invalue
4040          * @return string
4041          */
4042         private function makeSafe( $invalue ) {
4043                 // Armor existing references for reversibility.
4044                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
4045
4046                 $bytesleft = 0;
4047                 $result = "";
4048                 $working = 0;
4049                 $valueLength = strlen( $invalue );
4050                 for ( $i = 0; $i < $valueLength; $i++ ) {
4051                         $bytevalue = ord( $invalue[$i] );
4052                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
4053                                 $result .= chr( $bytevalue );
4054                                 $bytesleft = 0;
4055                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
4056                                 $working = $working << 6;
4057                                 $working += ( $bytevalue & 0x3F );
4058                                 $bytesleft--;
4059                                 if ( $bytesleft <= 0 ) {
4060                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
4061                                 }
4062                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
4063                                 $working = $bytevalue & 0x1F;
4064                                 $bytesleft = 1;
4065                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
4066                                 $working = $bytevalue & 0x0F;
4067                                 $bytesleft = 2;
4068                         } else { // 1111 0xxx
4069                                 $working = $bytevalue & 0x07;
4070                                 $bytesleft = 3;
4071                         }
4072                 }
4073                 return $result;
4074         }
4075
4076         /**
4077          * Reverse the previously applied transliteration of non-ASCII characters
4078          * back to UTF-8. Used to protect data from corruption by broken web browsers
4079          * as listed in $wgBrowserBlackList.
4080          *
4081          * @param string $invalue
4082          * @return string
4083          */
4084         private function unmakeSafe( $invalue ) {
4085                 $result = "";
4086                 $valueLength = strlen( $invalue );
4087                 for ( $i = 0; $i < $valueLength; $i++ ) {
4088                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
4089                                 $i += 3;
4090                                 $hexstring = "";
4091                                 do {
4092                                         $hexstring .= $invalue[$i];
4093                                         $i++;
4094                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
4095
4096                                 // Do some sanity checks. These aren't needed for reversibility,
4097                                 // but should help keep the breakage down if the editor
4098                                 // breaks one of the entities whilst editing.
4099                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) && ( strlen( $hexstring ) <= 6 ) ) {
4100                                         $codepoint = hexdec( $hexstring );
4101                                         $result .= UtfNormal\Utils::codepointToUtf8( $codepoint );
4102                                 } else {
4103                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
4104                                 }
4105                         } else {
4106                                 $result .= substr( $invalue, $i, 1 );
4107                         }
4108                 }
4109                 // reverse the transform that we made for reversibility reasons.
4110                 return strtr( $result, array( "&#x0" => "&#x" ) );
4111         }
4112 }