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 use MediaWiki\Logger\LoggerFactory;
  24 use MediaWiki\MediaWikiServices;
  25 use Wikimedia\ScopedCallback;
  26
  27 /**
  28  * The edit page/HTML interface (split from Article)
  29  * The actual database and text munging is still in Article,
  30  * but it should get easier to call those from alternate
  31  * interfaces.
  32  *
  33  * EditPage cares about two distinct titles:
  34  * $this->mContextTitle is the page that forms submit to, links point to,
  35  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  36  * page in the database that is actually being edited. These are
  37  * usually the same, but they are now allowed to be different.
  38  *
  39  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  40  * headaches, which may be fatal.
  41  */
  42 class EditPage {
  43         /**
  44          * Used for Unicode support checks
  45          */
  46         const UNICODE_CHECK = 'ℳ𝒲♥𝓊𝓃𝒾𝒸ℴ𝒹ℯ';
  47
  48         /**
  49          * Status: Article successfully updated
  50          */
  51         const AS_SUCCESS_UPDATE = 200;
  52
  53         /**
  54          * Status: Article successfully created
  55          */
  56         const AS_SUCCESS_NEW_ARTICLE = 201;
  57
  58         /**
  59          * Status: Article update aborted by a hook function
  60          */
  61         const AS_HOOK_ERROR = 210;
  62
  63         /**
  64          * Status: A hook function returned an error
  65          */
  66         const AS_HOOK_ERROR_EXPECTED = 212;
  67
  68         /**
  69          * Status: User is blocked from editing this page
  70          */
  71         const AS_BLOCKED_PAGE_FOR_USER = 215;
  72
  73         /**
  74          * Status: Content too big (> $wgMaxArticleSize)
  75          */
  76         const AS_CONTENT_TOO_BIG = 216;
  77
  78         /**
  79          * Status: this anonymous user is not allowed to edit this page
  80          */
  81         const AS_READ_ONLY_PAGE_ANON = 218;
  82
  83         /**
  84          * Status: this logged in user is not allowed to edit this page
  85          */
  86         const AS_READ_ONLY_PAGE_LOGGED = 219;
  87
  88         /**
  89          * Status: wiki is in readonly mode (wfReadOnly() == true)
  90          */
  91         const AS_READ_ONLY_PAGE = 220;
  92
  93         /**
  94          * Status: rate limiter for action 'edit' was tripped
  95          */
  96         const AS_RATE_LIMITED = 221;
  97
  98         /**
  99          * Status: article was deleted while editing and param wpRecreate == false or form
 100          * was not posted
 101          */
 102         const AS_ARTICLE_WAS_DELETED = 222;
 103
 104         /**
 105          * Status: user tried to create this page, but is not allowed to do that
 106          * ( Title->userCan('create') == false )
 107          */
 108         const AS_NO_CREATE_PERMISSION = 223;
 109
 110         /**
 111          * Status: user tried to create a blank page and wpIgnoreBlankArticle == false
 112          */
 113         const AS_BLANK_ARTICLE = 224;
 114
 115         /**
 116          * Status: (non-resolvable) edit conflict
 117          */
 118         const AS_CONFLICT_DETECTED = 225;
 119
 120         /**
 121          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 122          * editing in his own userspace or talkspace and wpIgnoreBlankSummary == false
 123          */
 124         const AS_SUMMARY_NEEDED = 226;
 125
 126         /**
 127          * Status: user tried to create a new section without content
 128          */
 129         const AS_TEXTBOX_EMPTY = 228;
 130
 131         /**
 132          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 133          */
 134         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 135
 136         /**
 137          * Status: WikiPage::doEdit() was unsuccessful
 138          */
 139         const AS_END = 231;
 140
 141         /**
 142          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 143          */
 144         const AS_SPAM_ERROR = 232;
 145
 146         /**
 147          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 148          */
 149         const AS_IMAGE_REDIRECT_ANON = 233;
 150
 151         /**
 152          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 153          */
 154         const AS_IMAGE_REDIRECT_LOGGED = 234;
 155
 156         /**
 157          * Status: user tried to modify the content model, but is not allowed to do that
 158          * ( User::isAllowed('editcontentmodel') == false )
 159          */
 160         const AS_NO_CHANGE_CONTENT_MODEL = 235;
 161
 162         /**
 163          * Status: user tried to create self-redirect (redirect to the same article) and
 164          * wpIgnoreSelfRedirect == false
 165          */
 166         const AS_SELF_REDIRECT = 236;
 167
 168         /**
 169          * Status: an error relating to change tagging. Look at the message key for
 170          * more details
 171          */
 172         const AS_CHANGE_TAG_ERROR = 237;
 173
 174         /**
 175          * Status: can't parse content
 176          */
 177         const AS_PARSE_ERROR = 240;
 178
 179         /**
 180          * Status: when changing the content model is disallowed due to
 181          * $wgContentHandlerUseDB being false
 182          */
 183         const AS_CANNOT_USE_CUSTOM_MODEL = 241;
 184
 185         /**
 186          * Status: edit rejected because browser doesn't support Unicode.
 187          */
 188         const AS_UNICODE_NOT_SUPPORTED = 242;
 189
 190         /**
 191          * HTML id and name for the beginning of the edit form.
 192          */
 193         const EDITFORM_ID = 'editform';
 194
 195         /**
 196          * Prefix of key for cookie used to pass post-edit state.
 197          * The revision id edited is added after this
 198          */
 199         const POST_EDIT_COOKIE_KEY_PREFIX = 'PostEditRevision';
 200
 201         /**
 202          * Duration of PostEdit cookie, in seconds.
 203          * The cookie will be removed instantly if the JavaScript runs.
 204          *
 205          * Otherwise, though, we don't want the cookies to accumulate.
 206          * RFC 2109 ( https://www.ietf.org/rfc/rfc2109.txt ) specifies a possible
 207          * limit of only 20 cookies per domain. This still applies at least to some
 208          * versions of IE without full updates:
 209          * https://blogs.msdn.com/b/ieinternals/archive/2009/08/20/wininet-ie-cookie-internals-faq.aspx
 210          *
 211          * A value of 20 minutes should be enough to take into account slow loads and minor
 212          * clock skew while still avoiding cookie accumulation when JavaScript is turned off.
 213          */
 214         const POST_EDIT_COOKIE_DURATION = 1200;
 215
 216         /**
 217          * @deprecated for public usage since 1.30 use EditPage::getArticle()
 218          * @var Article
 219          */
 220         public $mArticle;
 221         /** @var WikiPage */
 222         private $page;
 223
 224         /**
 225          * @deprecated for public usage since 1.30 use EditPage::getTitle()
 226          * @var Title
 227          */
 228         public $mTitle;
 229
 230         /** @var null|Title */
 231         private $mContextTitle = null;
 232
 233         /** @var string */
 234         public $action = 'submit';
 235
 236         /** @var bool */
 237         public $isConflict = false;
 238
 239         /**
 240          * @deprecated since 1.30 use Title::isCssJsSubpage()
 241          * @var bool
 242          */
 243         public $isCssJsSubpage = false;
 244
 245         /**
 246          * @deprecated since 1.30 use Title::isCssSubpage()
 247          * @var bool
 248          */
 249         public $isCssSubpage = false;
 250
 251         /**
 252          * @deprecated since 1.30 use Title::isJsSubpage()
 253          * @var bool
 254          */
 255         public $isJsSubpage = false;
 256
 257         /**
 258          * @deprecated since 1.30
 259          * @var bool
 260          */
 261         public $isWrongCaseCssJsPage = false;
 262
 263         /** @var bool New page or new section */
 264         public $isNew = false;
 265
 266         /** @var bool */
 267         public $deletedSinceEdit;
 268
 269         /** @var string */
 270         public $formtype;
 271
 272         /** @var bool */
 273         public $firsttime;
 274
 275         /** @var bool|stdClass */
 276         public $lastDelete;
 277
 278         /** @var bool */
 279         public $mTokenOk = false;
 280
 281         /** @var bool */
 282         public $mTokenOkExceptSuffix = false;
 283
 284         /** @var bool */
 285         public $mTriedSave = false;
 286
 287         /** @var bool */
 288         public $incompleteForm = false;
 289
 290         /** @var bool */
 291         public $tooBig = false;
 292
 293         /** @var bool */
 294         public $missingComment = false;
 295
 296         /** @var bool */
 297         public $missingSummary = false;
 298
 299         /** @var bool */
 300         public $allowBlankSummary = false;
 301
 302         /** @var bool */
 303         protected $blankArticle = false;
 304
 305         /** @var bool */
 306         protected $allowBlankArticle = false;
 307
 308         /** @var bool */
 309         protected $selfRedirect = false;
 310
 311         /** @var bool */
 312         protected $allowSelfRedirect = false;
 313
 314         /** @var string */
 315         public $autoSumm = '';
 316
 317         /** @var string */
 318         public $hookError = '';
 319
 320         /** @var ParserOutput */
 321         public $mParserOutput;
 322
 323         /** @var bool Has a summary been preset using GET parameter &summary= ? */
 324         public $hasPresetSummary = false;
 325
 326         /** @var Revision|bool */
 327         public $mBaseRevision = false;
 328
 329         /** @var bool */
 330         public $mShowSummaryField = true;
 331
 332         # Form values
 333
 334         /** @var bool */
 335         public $save = false;
 336
 337         /** @var bool */
 338         public $preview = false;
 339
 340         /** @var bool */
 341         public $diff = false;
 342
 343         /** @var bool */
 344         public $minoredit = false;
 345
 346         /** @var bool */
 347         public $watchthis = false;
 348
 349         /** @var bool */
 350         public $recreate = false;
 351
 352         /** @var string */
 353         public $textbox1 = '';
 354
 355         /** @var string */
 356         public $textbox2 = '';
 357
 358         /** @var string */
 359         public $summary = '';
 360
 361         /** @var bool */
 362         public $nosummary = false;
 363
 364         /** @var string */
 365         public $edittime = '';
 366
 367         /** @var int */
 368         private $editRevId = null;
 369
 370         /** @var string */
 371         public $section = '';
 372
 373         /** @var string */
 374         public $sectiontitle = '';
 375
 376         /** @var string */
 377         public $starttime = '';
 378
 379         /** @var int */
 380         public $oldid = 0;
 381
 382         /** @var int */
 383         public $parentRevId = 0;
 384
 385         /** @var string */
 386         public $editintro = '';
 387
 388         /** @var null */
 389         public $scrolltop = null;
 390
 391         /** @var bool */
 392         public $bot = true;
 393
 394         /** @var string */
 395         public $contentModel;
 396
 397         /** @var null|string */
 398         public $contentFormat = null;
 399
 400         /** @var null|array */
 401         private $changeTags = null;
 402
 403         # Placeholders for text injection by hooks (must be HTML)
 404         # extensions should take care to _append_ to the present value
 405
 406         /** @var string Before even the preview */
 407         public $editFormPageTop = '';
 408         public $editFormTextTop = '';
 409         public $editFormTextBeforeContent = '';
 410         public $editFormTextAfterWarn = '';
 411         public $editFormTextAfterTools = '';
 412         public $editFormTextBottom = '';
 413         public $editFormTextAfterContent = '';
 414         public $previewTextAfterContent = '';
 415         public $mPreloadContent = null;
 416
 417         /* $didSave should be set to true whenever an article was successfully altered. */
 418         public $didSave = false;
 419         public $undidRev = 0;
 420
 421         public $suppressIntro = false;
 422
 423         /** @var bool */
 424         protected $edit;
 425
 426         /** @var bool|int */
 427         protected $contentLength = false;
 428
 429         /**
 430          * @var bool Set in ApiEditPage, based on ContentHandler::allowsDirectApiEditing
 431          */
 432         private $enableApiEditOverride = false;
 433
 434         /**
 435          * @var IContextSource
 436          */
 437         protected $context;
 438
 439         /**
 440          * @var bool Whether an old revision is edited
 441          */
 442         private $isOldRev = false;
 443
 444         /**
 445          * @var string|null What the user submitted in the 'wpUnicodeCheck' field
 446          */
 447         private $unicodeCheck;
 448
 449         /**
 450          * @param Article $article
 451          */
 452         public function __construct( Article $article ) {
 453                 $this->mArticle = $article;
 454                 $this->page = $article->getPage(); // model object
 455                 $this->mTitle = $article->getTitle();
 456                 $this->context = $article->getContext();
 457
 458                 $this->contentModel = $this->mTitle->getContentModel();
 459
 460                 $handler = ContentHandler::getForModelID( $this->contentModel );
 461                 $this->contentFormat = $handler->getDefaultFormat();
 462         }
 463
 464         /**
 465          * @return Article
 466          */
 467         public function getArticle() {
 468                 return $this->mArticle;
 469         }
 470
 471         /**
 472          * @since 1.28
 473          * @return IContextSource
 474          */
 475         public function getContext() {
 476                 return $this->context;
 477         }
 478
 479         /**
 480          * @since 1.19
 481          * @return Title
 482          */
 483         public function getTitle() {
 484                 return $this->mTitle;
 485         }
 486
 487         /**
 488          * Set the context Title object
 489          *
 490          * @param Title|null $title Title object or null
 491          */
 492         public function setContextTitle( $title ) {
 493                 $this->mContextTitle = $title;
 494         }
 495
 496         /**
 497          * Get the context title object.
 498          * If not set, $wgTitle will be returned. This behavior might change in
 499          * the future to return $this->mTitle instead.
 500          *
 501          * @return Title
 502          */
 503         public function getContextTitle() {
 504                 if ( is_null( $this->mContextTitle ) ) {
 505                         wfDebugLog(
 506                                 'GlobalTitleFail',
 507                                 __METHOD__ . ' called by ' . wfGetAllCallers( 5 ) . ' with no title set.'
 508                         );
 509                         global $wgTitle;
 510                         return $wgTitle;
 511                 } else {
 512                         return $this->mContextTitle;
 513                 }
 514         }
 515
 516         /**
 517          * Check if the edit page is using OOUI controls
 518          * @return bool Always true
 519          * @deprecated since 1.30
 520          */
 521         public function isOouiEnabled() {
 522                 return true;
 523         }
 524
 525         /**
 526          * Returns if the given content model is editable.
 527          *
 528          * @param string $modelId The ID of the content model to test. Use CONTENT_MODEL_XXX constants.
 529          * @return bool
 530          * @throws MWException If $modelId has no known handler
 531          */
 532         public function isSupportedContentModel( $modelId ) {
 533                 return $this->enableApiEditOverride === true ||
 534                         ContentHandler::getForModelID( $modelId )->supportsDirectEditing();
 535         }
 536
 537         /**
 538          * Allow editing of content that supports API direct editing, but not general
 539          * direct editing. Set to false by default.
 540          *
 541          * @param bool $enableOverride
 542          */
 543         public function setApiEditOverride( $enableOverride ) {
 544                 $this->enableApiEditOverride = $enableOverride;
 545         }
 546
 547         /**
 548          * @deprecated since 1.29, call edit directly
 549          */
 550         public function submit() {
 551                 wfDeprecated( __METHOD__, '1.29' );
 552                 $this->edit();
 553         }
 554
 555         /**
 556          * This is the function that gets called for "action=edit". It
 557          * sets up various member variables, then passes execution to
 558          * another function, usually showEditForm()
 559          *
 560          * The edit form is self-submitting, so that when things like
 561          * preview and edit conflicts occur, we get the same form back
 562          * with the extra stuff added.  Only when the final submission
 563          * is made and all is well do we actually save and redirect to
 564          * the newly-edited page.
 565          */
 566         public function edit() {
 567                 // Allow extensions to modify/prevent this form or submission
 568                 if ( !Hooks::run( 'AlternateEdit', [ $this ] ) ) {
 569                         return;
 570                 }
 571
 572                 wfDebug( __METHOD__ . ": enter\n" );
 573
 574                 $request = $this->context->getRequest();
 575                 // If they used redlink=1 and the page exists, redirect to the main article
 576                 if ( $request->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 577                         $this->context->getOutput()->redirect( $this->mTitle->getFullURL() );
 578                         return;
 579                 }
 580
 581                 $this->importFormData( $request );
 582                 $this->firsttime = false;
 583
 584                 if ( wfReadOnly() && $this->save ) {
 585                         // Force preview
 586                         $this->save = false;
 587                         $this->preview = true;
 588                 }
 589
 590                 if ( $this->save ) {
 591                         $this->formtype = 'save';
 592                 } elseif ( $this->preview ) {
 593                         $this->formtype = 'preview';
 594                 } elseif ( $this->diff ) {
 595                         $this->formtype = 'diff';
 596                 } else { # First time through
 597                         $this->firsttime = true;
 598                         if ( $this->previewOnOpen() ) {
 599                                 $this->formtype = 'preview';
 600                         } else {
 601                                 $this->formtype = 'initial';
 602                         }
 603                 }
 604
 605                 $permErrors = $this->getEditPermissionErrors( $this->save ? 'secure' : 'full' );
 606                 if ( $permErrors ) {
 607                         wfDebug( __METHOD__ . ": User can't edit\n" );
 608                         // Auto-block user's IP if the account was "hard" blocked
 609                         if ( !wfReadOnly() ) {
 610                                 DeferredUpdates::addCallableUpdate( function () {
 611                                         $this->context->getUser()->spreadAnyEditBlock();
 612                                 } );
 613                         }
 614                         $this->displayPermissionsError( $permErrors );
 615
 616                         return;
 617                 }
 618
 619                 $revision = $this->mArticle->getRevisionFetched();
 620                 // Disallow editing revisions with content models different from the current one
 621                 // Undo edits being an exception in order to allow reverting content model changes.
 622                 if ( $revision
 623                         && $revision->getContentModel() !== $this->contentModel
 624                 ) {
 625                         $prevRev = null;
 626                         if ( $this->undidRev ) {
 627                                 $undidRevObj = Revision::newFromId( $this->undidRev );
 628                                 $prevRev = $undidRevObj ? $undidRevObj->getPrevious() : null;
 629                         }
 630                         if ( !$this->undidRev
 631                                 || !$prevRev
 632                                 || $prevRev->getContentModel() !== $this->contentModel
 633                         ) {
 634                                 $this->displayViewSourcePage(
 635                                         $this->getContentObject(),
 636                                         $this->context->msg(
 637                                                 'contentmodelediterror',
 638                                                 $revision->getContentModel(),
 639                                                 $this->contentModel
 640                                         )->plain()
 641                                 );
 642                                 return;
 643                         }
 644                 }
 645
 646                 $this->isConflict = false;
 647                 // css / js subpages of user pages get a special treatment
 648                 // The following member variables are deprecated since 1.30,
 649                 // the functions should be used instead.
 650                 $this->isCssJsSubpage = $this->mTitle->isCssJsSubpage();
 651                 $this->isCssSubpage = $this->mTitle->isCssSubpage();
 652                 $this->isJsSubpage = $this->mTitle->isJsSubpage();
 653                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 654
 655                 # Show applicable editing introductions
 656                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 657                         $this->showIntro();
 658                 }
 659
 660                 # Attempt submission here.  This will check for edit conflicts,
 661                 # and redundantly check for locked database, blocked IPs, etc.
 662                 # that edit() already checked just in case someone tries to sneak
 663                 # in the back door with a hand-edited submission URL.
 664
 665                 if ( 'save' == $this->formtype ) {
 666                         $resultDetails = null;
 667                         $status = $this->attemptSave( $resultDetails );
 668                         if ( !$this->handleStatus( $status, $resultDetails ) ) {
 669                                 return;
 670                         }
 671                 }
 672
 673                 # First time through: get contents, set time for conflict
 674                 # checking, etc.
 675                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 676                         if ( $this->initialiseForm() === false ) {
 677                                 $this->noSuchSectionPage();
 678                                 return;
 679                         }
 680
 681                         if ( !$this->mTitle->getArticleID() ) {
 682                                 Hooks::run( 'EditFormPreloadText', [ &$this->textbox1, &$this->mTitle ] );
 683                         } else {
 684                                 Hooks::run( 'EditFormInitialText', [ $this ] );
 685                         }
 686
 687                 }
 688
 689                 $this->showEditForm();
 690         }
 691
 692         /**
 693          * @param string $rigor Same format as Title::getUserPermissionErrors()
 694          * @return array
 695          */
 696         protected function getEditPermissionErrors( $rigor = 'secure' ) {
 697                 $user = $this->context->getUser();
 698                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $user, $rigor );
 699                 # Can this title be created?
 700                 if ( !$this->mTitle->exists() ) {
 701                         $permErrors = array_merge(
 702                                 $permErrors,
 703                                 wfArrayDiff2(
 704                                         $this->mTitle->getUserPermissionsErrors( 'create', $user, $rigor ),
 705                                         $permErrors
 706                                 )
 707                         );
 708                 }
 709                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 710                 $remove = [];
 711                 foreach ( $permErrors as $error ) {
 712                         if ( ( $this->preview || $this->diff )
 713                                 && (
 714                                         $error[0] == 'blockedtext' ||
 715                                         $error[0] == 'autoblockedtext' ||
 716                                         $error[0] == 'systemblockedtext'
 717                                 )
 718                         ) {
 719                                 $remove[] = $error;
 720                         }
 721                 }
 722                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 723
 724                 return $permErrors;
 725         }
 726
 727         /**
 728          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 729          * but with the following differences:
 730          * - If redlink=1, the user will be redirected to the page
 731          * - If there is content to display or the error occurs while either saving,
 732          *   previewing or showing the difference, it will be a
 733          *   "View source for ..." page displaying the source code after the error message.
 734          *
 735          * @since 1.19
 736          * @param array $permErrors Array of permissions errors, as returned by
 737          *    Title::getUserPermissionsErrors().
 738          * @throws PermissionsError
 739          */
 740         protected function displayPermissionsError( array $permErrors ) {
 741                 $out = $this->context->getOutput();
 742                 if ( $this->context->getRequest()->getBool( 'redlink' ) ) {
 743                         // The edit page was reached via a red link.
 744                         // Redirect to the article page and let them click the edit tab if
 745                         // they really want a permission error.
 746                         $out->redirect( $this->mTitle->getFullURL() );
 747                         return;
 748                 }
 749
 750                 $content = $this->getContentObject();
 751
 752                 # Use the normal message if there's nothing to display
 753                 if ( $this->firsttime && ( !$content || $content->isEmpty() ) ) {
 754                         $action = $this->mTitle->exists() ? 'edit' :
 755                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 756                         throw new PermissionsError( $action, $permErrors );
 757                 }
 758
 759                 $this->displayViewSourcePage(
 760                         $content,
 761                         $out->formatPermissionsErrorMessage( $permErrors, 'edit' )
 762                 );
 763         }
 764
 765         /**
 766          * Display a read-only View Source page
 767          * @param Content $content content object
 768          * @param string $errorMessage additional wikitext error message to display
 769          */
 770         protected function displayViewSourcePage( Content $content, $errorMessage = '' ) {
 771                 $out = $this->context->getOutput();
 772                 Hooks::run( 'EditPage::showReadOnlyForm:initial', [ $this, &$out ] );
 773
 774                 $out->setRobotPolicy( 'noindex,nofollow' );
 775                 $out->setPageTitle( $this->context->msg(
 776                         'viewsource-title',
 777                         $this->getContextTitle()->getPrefixedText()
 778                 ) );
 779                 $out->addBacklinkSubtitle( $this->getContextTitle() );
 780                 $out->addHTML( $this->editFormPageTop );
 781                 $out->addHTML( $this->editFormTextTop );
 782
 783                 if ( $errorMessage !== '' ) {
 784                         $out->addWikiText( $errorMessage );
 785                         $out->addHTML( "<hr />\n" );
 786                 }
 787
 788                 # If the user made changes, preserve them when showing the markup
 789                 # (This happens when a user is blocked during edit, for instance)
 790                 if ( !$this->firsttime ) {
 791                         $text = $this->textbox1;
 792                         $out->addWikiMsg( 'viewyourtext' );
 793                 } else {
 794                         try {
 795                                 $text = $this->toEditText( $content );
 796                         } catch ( MWException $e ) {
 797                                 # Serialize using the default format if the content model is not supported
 798                                 # (e.g. for an old revision with a different model)
 799                                 $text = $content->serialize();
 800                         }
 801                         $out->addWikiMsg( 'viewsourcetext' );
 802                 }
 803
 804                 $out->addHTML( $this->editFormTextBeforeContent );
 805                 $this->showTextbox( $text, 'wpTextbox1', [ 'readonly' ] );
 806                 $out->addHTML( $this->editFormTextAfterContent );
 807
 808                 $out->addHTML( $this->makeTemplatesOnThisPageList( $this->getTemplates() ) );
 809
 810                 $out->addModules( 'mediawiki.action.edit.collapsibleFooter' );
 811
 812                 $out->addHTML( $this->editFormTextBottom );
 813                 if ( $this->mTitle->exists() ) {
 814                         $out->returnToMain( null, $this->mTitle );
 815                 }
 816         }
 817
 818         /**
 819          * Should we show a preview when the edit form is first shown?
 820          *
 821          * @return bool
 822          */
 823         protected function previewOnOpen() {
 824                 $previewOnOpenNamespaces = $this->context->getConfig()->get( 'PreviewOnOpenNamespaces' );
 825                 $request = $this->context->getRequest();
 826                 if ( $request->getVal( 'preview' ) == 'yes' ) {
 827                         // Explicit override from request
 828                         return true;
 829                 } elseif ( $request->getVal( 'preview' ) == 'no' ) {
 830                         // Explicit override from request
 831                         return false;
 832                 } elseif ( $this->section == 'new' ) {
 833                         // Nothing *to* preview for new sections
 834                         return false;
 835                 } elseif ( ( $request->getVal( 'preload' ) !== null || $this->mTitle->exists() )
 836                         && $this->context->getUser()->getOption( 'previewonfirst' )
 837                 ) {
 838                         // Standard preference behavior
 839                         return true;
 840                 } elseif ( !$this->mTitle->exists()
 841                         && isset( $previewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 842                         && $previewOnOpenNamespaces[$this->mTitle->getNamespace()]
 843                 ) {
 844                         // Categories are special
 845                         return true;
 846                 } else {
 847                         return false;
 848                 }
 849         }
 850
 851         /**
 852          * Checks whether the user entered a skin name in uppercase,
 853          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 854          *
 855          * @return bool
 856          */
 857         protected function isWrongCaseCssJsPage() {
 858                 if ( $this->mTitle->isCssJsSubpage() ) {
 859                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 860                         $skins = array_merge(
 861                                 array_keys( Skin::getSkinNames() ),
 862                                 [ 'common' ]
 863                         );
 864                         return !in_array( $name, $skins )
 865                                 && in_array( strtolower( $name ), $skins );
 866                 } else {
 867                         return false;
 868                 }
 869         }
 870
 871         /**
 872          * Returns whether section editing is supported for the current page.
 873          * Subclasses may override this to replace the default behavior, which is
 874          * to check ContentHandler::supportsSections.
 875          *
 876          * @return bool True if this edit page supports sections, false otherwise.
 877          */
 878         protected function isSectionEditSupported() {
 879                 $contentHandler = ContentHandler::getForTitle( $this->mTitle );
 880                 return $contentHandler->supportsSections();
 881         }
 882
 883         /**
 884          * This function collects the form data and uses it to populate various member variables.
 885          * @param WebRequest &$request
 886          * @throws ErrorPageError
 887          */
 888         public function importFormData( &$request ) {
 889                 # Section edit can come from either the form or a link
 890                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 891
 892                 if ( $this->section !== null && $this->section !== '' && !$this->isSectionEditSupported() ) {
 893                         throw new ErrorPageError( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
 894                 }
 895
 896                 $this->isNew = !$this->mTitle->exists() || $this->section == 'new';
 897
 898                 if ( $request->wasPosted() ) {
 899                         # These fields need to be checked for encoding.
 900                         # Also remove trailing whitespace, but don't remove _initial_
 901                         # whitespace from the text boxes. This may be significant formatting.
 902                         $this->textbox1 = rtrim( $request->getText( 'wpTextbox1' ) );
 903                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 904                                 // Skip this if wpTextbox2 has input, it indicates that we came
 905                                 // from a conflict page with raw page text, not a custom form
 906                                 // modified by subclasses
 907                                 $textbox1 = $this->importContentFormData( $request );
 908                                 if ( $textbox1 !== null ) {
 909                                         $this->textbox1 = $textbox1;
 910                                 }
 911                         }
 912
 913                         $this->unicodeCheck = $request->getText( 'wpUnicodeCheck' );
 914
 915                         $this->summary = $request->getText( 'wpSummary' );
 916
 917                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 918                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 919                         # section titles.
 920                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 921
 922                         # Treat sectiontitle the same way as summary.
 923                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 924                         # currently doing double duty as both edit summary and section title. Right now this
 925                         # is just to allow API edits to work around this limitation, but this should be
 926                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 927                         $this->sectiontitle = $request->getText( 'wpSectionTitle' );
 928                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 929
 930                         $this->edittime = $request->getVal( 'wpEdittime' );
 931                         $this->editRevId = $request->getIntOrNull( 'editRevId' );
 932                         $this->starttime = $request->getVal( 'wpStarttime' );
 933
 934                         $undidRev = $request->getInt( 'wpUndidRevision' );
 935                         if ( $undidRev ) {
 936                                 $this->undidRev = $undidRev;
 937                         }
 938
 939                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 940
 941                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 942                                 // wpTextbox1 field is missing, possibly due to being "too big"
 943                                 // according to some filter rules such as Suhosin's setting for
 944                                 // suhosin.request.max_value_length (d'oh)
 945                                 $this->incompleteForm = true;
 946                         } else {
 947                                 // If we receive the last parameter of the request, we can fairly
 948                                 // claim the POST request has not been truncated.
 949
 950                                 // TODO: softened the check for cutover.  Once we determine
 951                                 // that it is safe, we should complete the transition by
 952                                 // removing the "edittime" clause.
 953                                 $this->incompleteForm = ( !$request->getVal( 'wpUltimateParam' )
 954                                         && is_null( $this->edittime ) );
 955                         }
 956                         if ( $this->incompleteForm ) {
 957                                 # If the form is incomplete, force to preview.
 958                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 959                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 960                                 $this->preview = true;
 961                         } else {
 962                                 $this->preview = $request->getCheck( 'wpPreview' );
 963                                 $this->diff = $request->getCheck( 'wpDiff' );
 964
 965                                 // Remember whether a save was requested, so we can indicate
 966                                 // if we forced preview due to session failure.
 967                                 $this->mTriedSave = !$this->preview;
 968
 969                                 if ( $this->tokenOk( $request ) ) {
 970                                         # Some browsers will not report any submit button
 971                                         # if the user hits enter in the comment box.
 972                                         # The unmarked state will be assumed to be a save,
 973                                         # if the form seems otherwise complete.
 974                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 975                                 } elseif ( $this->diff ) {
 976                                         # Failed token check, but only requested "Show Changes".
 977                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 978                                 } else {
 979                                         # Page might be a hack attempt posted from
 980                                         # an external site. Preview instead of saving.
 981                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 982                                         $this->preview = true;
 983                                 }
 984                         }
 985                         $this->save = !$this->preview && !$this->diff;
 986                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 987                                 $this->edittime = null;
 988                         }
 989
 990                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 991                                 $this->starttime = null;
 992                         }
 993
 994                         $this->recreate = $request->getCheck( 'wpRecreate' );
 995
 996                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 997                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 998
 999                         $user = $this->context->getUser();
1000                         # Don't force edit summaries when a user is editing their own user or talk page
1001                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK )
1002                                 && $this->mTitle->getText() == $user->getName()
1003                         ) {
1004                                 $this->allowBlankSummary = true;
1005                         } else {
1006                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' )
1007                                         || !$user->getOption( 'forceeditsummary' );
1008                         }
1009
1010                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
1011
1012                         $this->allowBlankArticle = $request->getBool( 'wpIgnoreBlankArticle' );
1013                         $this->allowSelfRedirect = $request->getBool( 'wpIgnoreSelfRedirect' );
1014
1015                         $changeTags = $request->getVal( 'wpChangeTags' );
1016                         if ( is_null( $changeTags ) || $changeTags === '' ) {
1017                                 $this->changeTags = [];
1018                         } else {
1019                                 $this->changeTags = array_filter( array_map( 'trim', explode( ',',
1020                                         $changeTags ) ) );
1021                         }
1022                 } else {
1023                         # Not a posted form? Start with nothing.
1024                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
1025                         $this->textbox1 = '';
1026                         $this->summary = '';
1027                         $this->sectiontitle = '';
1028                         $this->edittime = '';
1029                         $this->editRevId = null;
1030                         $this->starttime = wfTimestampNow();
1031                         $this->edit = false;
1032                         $this->preview = false;
1033                         $this->save = false;
1034                         $this->diff = false;
1035                         $this->minoredit = false;
1036                         // Watch may be overridden by request parameters
1037                         $this->watchthis = $request->getBool( 'watchthis', false );
1038                         $this->recreate = false;
1039
1040                         // When creating a new section, we can preload a section title by passing it as the
1041                         // preloadtitle parameter in the URL (T15100)
1042                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
1043                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
1044                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
1045                                 $this->summary = $request->getVal( 'preloadtitle' );
1046                         } elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
1047                                 $this->summary = $request->getText( 'summary' );
1048                                 if ( $this->summary !== '' ) {
1049                                         $this->hasPresetSummary = true;
1050                                 }
1051                         }
1052
1053                         if ( $request->getVal( 'minor' ) ) {
1054                                 $this->minoredit = true;
1055                         }
1056                 }
1057
1058                 $this->oldid = $request->getInt( 'oldid' );
1059                 $this->parentRevId = $request->getInt( 'parentRevId' );
1060
1061                 $this->bot = $request->getBool( 'bot', true );
1062                 $this->nosummary = $request->getBool( 'nosummary' );
1063
1064                 // May be overridden by revision.
1065                 $this->contentModel = $request->getText( 'model', $this->contentModel );
1066                 // May be overridden by revision.
1067                 $this->contentFormat = $request->getText( 'format', $this->contentFormat );
1068
1069                 try {
1070                         $handler = ContentHandler::getForModelID( $this->contentModel );
1071                 } catch ( MWUnknownContentModelException $e ) {
1072                         throw new ErrorPageError(
1073                                 'editpage-invalidcontentmodel-title',
1074                                 'editpage-invalidcontentmodel-text',
1075                                 [ wfEscapeWikiText( $this->contentModel ) ]
1076                         );
1077                 }
1078
1079                 if ( !$handler->isSupportedFormat( $this->contentFormat ) ) {
1080                         throw new ErrorPageError(
1081                                 'editpage-notsupportedcontentformat-title',
1082                                 'editpage-notsupportedcontentformat-text',
1083                                 [
1084                                         wfEscapeWikiText( $this->contentFormat ),
1085                                         wfEscapeWikiText( ContentHandler::getLocalizedName( $this->contentModel ) )
1086                                 ]
1087                         );
1088                 }
1089
1090                 /**
1091                  * @todo Check if the desired model is allowed in this namespace, and if
1092                  *   a transition from the page's current model to the new model is
1093                  *   allowed.
1094                  */
1095
1096                 $this->editintro = $request->getText( 'editintro',
1097                         // Custom edit intro for new sections
1098                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
1099
1100                 // Allow extensions to modify form data
1101                 Hooks::run( 'EditPage::importFormData', [ $this, $request ] );
1102         }
1103
1104         /**
1105          * Subpage overridable method for extracting the page content data from the
1106          * posted form to be placed in $this->textbox1, if using customized input
1107          * this method should be overridden and return the page text that will be used
1108          * for saving, preview parsing and so on...
1109          *
1110          * @param WebRequest &$request
1111          * @return string|null
1112          */
1113         protected function importContentFormData( &$request ) {
1114                 return; // Don't do anything, EditPage already extracted wpTextbox1
1115         }
1116
1117         /**
1118          * Initialise form fields in the object
1119          * Called on the first invocation, e.g. when a user clicks an edit link
1120          * @return bool If the requested section is valid
1121          */
1122         public function initialiseForm() {
1123                 $this->edittime = $this->page->getTimestamp();
1124                 $this->editRevId = $this->page->getLatest();
1125
1126                 $content = $this->getContentObject( false ); # TODO: track content object?!
1127                 if ( $content === false ) {
1128                         return false;
1129                 }
1130                 $this->textbox1 = $this->toEditText( $content );
1131
1132                 $user = $this->context->getUser();
1133                 // activate checkboxes if user wants them to be always active
1134                 # Sort out the "watch" checkbox
1135                 if ( $user->getOption( 'watchdefault' ) ) {
1136                         # Watch all edits
1137                         $this->watchthis = true;
1138                 } elseif ( $user->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1139                         # Watch creations
1140                         $this->watchthis = true;
1141                 } elseif ( $user->isWatched( $this->mTitle ) ) {
1142                         # Already watched
1143                         $this->watchthis = true;
1144                 }
1145                 if ( $user->getOption( 'minordefault' ) && !$this->isNew ) {
1146                         $this->minoredit = true;
1147                 }
1148                 if ( $this->textbox1 === false ) {
1149                         return false;
1150                 }
1151                 return true;
1152         }
1153
1154         /**
1155          * @param Content|null $def_content The default value to return
1156          *
1157          * @return Content|null Content on success, $def_content for invalid sections
1158          *
1159          * @since 1.21
1160          */
1161         protected function getContentObject( $def_content = null ) {
1162                 global $wgContLang;
1163
1164                 $content = false;
1165
1166                 $user = $this->context->getUser();
1167                 $request = $this->context->getRequest();
1168                 // For message page not locally set, use the i18n message.
1169                 // For other non-existent articles, use preload text if any.
1170                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
1171                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
1172                                 # If this is a system message, get the default text.
1173                                 $msg = $this->mTitle->getDefaultMessageText();
1174
1175                                 $content = $this->toEditContent( $msg );
1176                         }
1177                         if ( $content === false ) {
1178                                 # If requested, preload some text.
1179                                 $preload = $request->getVal( 'preload',
1180                                         // Custom preload text for new sections
1181                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
1182                                 $params = $request->getArray( 'preloadparams', [] );
1183
1184                                 $content = $this->getPreloadedContent( $preload, $params );
1185                         }
1186                 // For existing pages, get text based on "undo" or section parameters.
1187                 } else {
1188                         if ( $this->section != '' ) {
1189                                 // Get section edit text (returns $def_text for invalid sections)
1190                                 $orig = $this->getOriginalContent( $user );
1191                                 $content = $orig ? $orig->getSection( $this->section ) : null;
1192
1193                                 if ( !$content ) {
1194                                         $content = $def_content;
1195                                 }
1196                         } else {
1197                                 $undoafter = $request->getInt( 'undoafter' );
1198                                 $undo = $request->getInt( 'undo' );
1199
1200                                 if ( $undo > 0 && $undoafter > 0 ) {
1201                                         $undorev = Revision::newFromId( $undo );
1202                                         $oldrev = Revision::newFromId( $undoafter );
1203
1204                                         # Sanity check, make sure it's the right page,
1205                                         # the revisions exist and they were not deleted.
1206                                         # Otherwise, $content will be left as-is.
1207                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
1208                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
1209                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT )
1210                                         ) {
1211                                                 $content = $this->page->getUndoContent( $undorev, $oldrev );
1212
1213                                                 if ( $content === false ) {
1214                                                         # Warn the user that something went wrong
1215                                                         $undoMsg = 'failure';
1216                                                 } else {
1217                                                         $oldContent = $this->page->getContent( Revision::RAW );
1218                                                         $popts = ParserOptions::newFromUserAndLang( $user, $wgContLang );
1219                                                         $newContent = $content->preSaveTransform( $this->mTitle, $user, $popts );
1220                                                         if ( $newContent->getModel() !== $oldContent->getModel() ) {
1221                                                                 // The undo may change content
1222                                                                 // model if its reverting the top
1223                                                                 // edit. This can result in
1224                                                                 // mismatched content model/format.
1225                                                                 $this->contentModel = $newContent->getModel();
1226                                                                 $this->contentFormat = $oldrev->getContentFormat();
1227                                                         }
1228
1229                                                         if ( $newContent->equals( $oldContent ) ) {
1230                                                                 # Tell the user that the undo results in no change,
1231                                                                 # i.e. the revisions were already undone.
1232                                                                 $undoMsg = 'nochange';
1233                                                                 $content = false;
1234                                                         } else {
1235                                                                 # Inform the user of our success and set an automatic edit summary
1236                                                                 $undoMsg = 'success';
1237
1238                                                                 # If we just undid one rev, use an autosummary
1239                                                                 $firstrev = $oldrev->getNext();
1240                                                                 if ( $firstrev && $firstrev->getId() == $undo ) {
1241                                                                         $userText = $undorev->getUserText();
1242                                                                         if ( $userText === '' ) {
1243                                                                                 $undoSummary = $this->context->msg(
1244                                                                                         'undo-summary-username-hidden',
1245                                                                                         $undo
1246                                                                                 )->inContentLanguage()->text();
1247                                                                         } else {
1248                                                                                 $undoSummary = $this->context->msg(
1249                                                                                         'undo-summary',
1250                                                                                         $undo,
1251                                                                                         $userText
1252                                                                                 )->inContentLanguage()->text();
1253                                                                         }
1254                                                                         if ( $this->summary === '' ) {
1255                                                                                 $this->summary = $undoSummary;
1256                                                                         } else {
1257                                                                                 $this->summary = $undoSummary . $this->context->msg( 'colon-separator' )
1258                                                                                         ->inContentLanguage()->text() . $this->summary;
1259                                                                         }
1260                                                                         $this->undidRev = $undo;
1261                                                                 }
1262                                                                 $this->formtype = 'diff';
1263                                                         }
1264                                                 }
1265                                         } else {
1266                                                 // Failed basic sanity checks.
1267                                                 // Older revisions may have been removed since the link
1268                                                 // was created, or we may simply have got bogus input.
1269                                                 $undoMsg = 'norev';
1270                                         }
1271
1272                                         $out = $this->context->getOutput();
1273                                         // Messages: undo-success, undo-failure, undo-norev, undo-nochange
1274                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
1275                                         $this->editFormPageTop .= $out->parse( "<div class=\"{$class}\">" .
1276                                                 $this->context->msg( 'undo-' . $undoMsg )->plain() . '</div>', true, /* interface */true );
1277                                 }
1278
1279                                 if ( $content === false ) {
1280                                         $content = $this->getOriginalContent( $user );
1281                                 }
1282                         }
1283                 }
1284
1285                 return $content;
1286         }
1287
1288         /**
1289          * Get the content of the wanted revision, without section extraction.
1290          *
1291          * The result of this function can be used to compare user's input with
1292          * section replaced in its context (using WikiPage::replaceSectionAtRev())
1293          * to the original text of the edit.
1294          *
1295          * This differs from Article::getContent() that when a missing revision is
1296          * encountered the result will be null and not the
1297          * 'missing-revision' message.
1298          *
1299          * @since 1.19
1300          * @param User $user The user to get the revision for
1301          * @return Content|null
1302          */
1303         private function getOriginalContent( User $user ) {
1304                 if ( $this->section == 'new' ) {
1305                         return $this->getCurrentContent();
1306                 }
1307                 $revision = $this->mArticle->getRevisionFetched();
1308                 if ( $revision === null ) {
1309                         $handler = ContentHandler::getForModelID( $this->contentModel );
1310                         return $handler->makeEmptyContent();
1311                 }
1312                 $content = $revision->getContent( Revision::FOR_THIS_USER, $user );
1313                 return $content;
1314         }
1315
1316         /**
1317          * Get the edit's parent revision ID
1318          *
1319          * The "parent" revision is the ancestor that should be recorded in this
1320          * page's revision history.  It is either the revision ID of the in-memory
1321          * article content, or in the case of a 3-way merge in order to rebase
1322          * across a recoverable edit conflict, the ID of the newer revision to
1323          * which we have rebased this page.
1324          *
1325          * @since 1.27
1326          * @return int Revision ID
1327          */
1328         public function getParentRevId() {
1329                 if ( $this->parentRevId ) {
1330                         return $this->parentRevId;
1331                 } else {
1332                         return $this->mArticle->getRevIdFetched();
1333                 }
1334         }
1335
1336         /**
1337          * Get the current content of the page. This is basically similar to
1338          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
1339          * content object is returned instead of null.
1340          *
1341          * @since 1.21
1342          * @return Content
1343          */
1344         protected function getCurrentContent() {
1345                 $rev = $this->page->getRevision();
1346                 $content = $rev ? $rev->getContent( Revision::RAW ) : null;
1347
1348                 if ( $content === false || $content === null ) {
1349                         $handler = ContentHandler::getForModelID( $this->contentModel );
1350                         return $handler->makeEmptyContent();
1351                 } elseif ( !$this->undidRev ) {
1352                         // Content models should always be the same since we error
1353                         // out if they are different before this point (in ->edit()).
1354                         // The exception being, during an undo, the current revision might
1355                         // differ from the prior revision.
1356                         $logger = LoggerFactory::getInstance( 'editpage' );
1357                         if ( $this->contentModel !== $rev->getContentModel() ) {
1358                                 $logger->warning( "Overriding content model from current edit {prev} to {new}", [
1359                                         'prev' => $this->contentModel,
1360                                         'new' => $rev->getContentModel(),
1361                                         'title' => $this->getTitle()->getPrefixedDBkey(),
1362                                         'method' => __METHOD__
1363                                 ] );
1364                                 $this->contentModel = $rev->getContentModel();
1365                         }
1366
1367                         // Given that the content models should match, the current selected
1368                         // format should be supported.
1369                         if ( !$content->isSupportedFormat( $this->contentFormat ) ) {
1370                                 $logger->warning( "Current revision content format unsupported. Overriding {prev} to {new}", [
1371
1372                                         'prev' => $this->contentFormat,
1373                                         'new' => $rev->getContentFormat(),
1374                                         'title' => $this->getTitle()->getPrefixedDBkey(),
1375                                         'method' => __METHOD__
1376                                 ] );
1377                                 $this->contentFormat = $rev->getContentFormat();
1378                         }
1379                 }
1380                 return $content;
1381         }
1382
1383         /**
1384          * Use this method before edit() to preload some content into the edit box
1385          *
1386          * @param Content $content
1387          *
1388          * @since 1.21
1389          */
1390         public function setPreloadedContent( Content $content ) {
1391                 $this->mPreloadContent = $content;
1392         }
1393
1394         /**
1395          * Get the contents to be preloaded into the box, either set by
1396          * an earlier setPreloadText() or by loading the given page.
1397          *
1398          * @param string $preload Representing the title to preload from.
1399          * @param array $params Parameters to use (interface-message style) in the preloaded text
1400          *
1401          * @return Content
1402          *
1403          * @since 1.21
1404          */
1405         protected function getPreloadedContent( $preload, $params = [] ) {
1406                 if ( !empty( $this->mPreloadContent ) ) {
1407                         return $this->mPreloadContent;
1408                 }
1409
1410                 $handler = ContentHandler::getForModelID( $this->contentModel );
1411
1412                 if ( $preload === '' ) {
1413                         return $handler->makeEmptyContent();
1414                 }
1415
1416                 $user = $this->context->getUser();
1417                 $title = Title::newFromText( $preload );
1418                 # Check for existence to avoid getting MediaWiki:Noarticletext
1419                 if ( $title === null || !$title->exists() || !$title->userCan( 'read', $user ) ) {
1420                         // TODO: somehow show a warning to the user!
1421                         return $handler->makeEmptyContent();
1422                 }
1423
1424                 $page = WikiPage::factory( $title );
1425                 if ( $page->isRedirect() ) {
1426                         $title = $page->getRedirectTarget();
1427                         # Same as before
1428                         if ( $title === null || !$title->exists() || !$title->userCan( 'read', $user ) ) {
1429                                 // TODO: somehow show a warning to the user!
1430                                 return $handler->makeEmptyContent();
1431                         }
1432                         $page = WikiPage::factory( $title );
1433                 }
1434
1435                 $parserOptions = ParserOptions::newFromUser( $user );
1436                 $content = $page->getContent( Revision::RAW );
1437
1438                 if ( !$content ) {
1439                         // TODO: somehow show a warning to the user!
1440                         return $handler->makeEmptyContent();
1441                 }
1442
1443                 if ( $content->getModel() !== $handler->getModelID() ) {
1444                         $converted = $content->convert( $handler->getModelID() );
1445
1446                         if ( !$converted ) {
1447                                 // TODO: somehow show a warning to the user!
1448                                 wfDebug( "Attempt to preload incompatible content: " .
1449                                         "can't convert " . $content->getModel() .
1450                                         " to " . $handler->getModelID() );
1451
1452                                 return $handler->makeEmptyContent();
1453                         }
1454
1455                         $content = $converted;
1456                 }
1457
1458                 return $content->preloadTransform( $title, $parserOptions, $params );
1459         }
1460
1461         /**
1462          * Make sure the form isn't faking a user's credentials.
1463          *
1464          * @param WebRequest &$request
1465          * @return bool
1466          * @private
1467          */
1468         public function tokenOk( &$request ) {
1469                 $token = $request->getVal( 'wpEditToken' );
1470                 $user = $this->context->getUser();
1471                 $this->mTokenOk = $user->matchEditToken( $token );
1472                 $this->mTokenOkExceptSuffix = $user->matchEditTokenNoSuffix( $token );
1473                 return $this->mTokenOk;
1474         }
1475
1476         /**
1477          * Sets post-edit cookie indicating the user just saved a particular revision.
1478          *
1479          * This uses a temporary cookie for each revision ID so separate saves will never
1480          * interfere with each other.
1481          *
1482          * Article::view deletes the cookie on server-side after the redirect and
1483          * converts the value to the global JavaScript variable wgPostEdit.
1484          *
1485          * If the variable were set on the server, it would be cached, which is unwanted
1486          * since the post-edit state should only apply to the load right after the save.
1487          *
1488          * @param int $statusValue The status value (to check for new article status)
1489          */
1490         protected function setPostEditCookie( $statusValue ) {
1491                 $revisionId = $this->page->getLatest();
1492                 $postEditKey = self::POST_EDIT_COOKIE_KEY_PREFIX . $revisionId;
1493
1494                 $val = 'saved';
1495                 if ( $statusValue == self::AS_SUCCESS_NEW_ARTICLE ) {
1496                         $val = 'created';
1497                 } elseif ( $this->oldid ) {
1498                         $val = 'restored';
1499                 }
1500
1501                 $response = $this->context->getRequest()->response();
1502                 $response->setCookie( $postEditKey, $val, time() + self::POST_EDIT_COOKIE_DURATION );
1503         }
1504
1505         /**
1506          * Attempt submission
1507          * @param array|bool &$resultDetails See docs for $result in internalAttemptSave
1508          * @throws UserBlockedError|ReadOnlyError|ThrottledError|PermissionsError
1509          * @return Status The resulting status object.
1510          */
1511         public function attemptSave( &$resultDetails = false ) {
1512                 # Allow bots to exempt some edits from bot flagging
1513                 $bot = $this->context->getUser()->isAllowed( 'bot' ) && $this->bot;
1514                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1515
1516                 Hooks::run( 'EditPage::attemptSave:after', [ $this, $status, $resultDetails ] );
1517
1518                 return $status;
1519         }
1520
1521         /**
1522          * Log when a page was successfully saved after the edit conflict view
1523          */
1524         private function incrementResolvedConflicts() {
1525                 if ( $this->context->getRequest()->getText( 'mode' ) !== 'conflict' ) {
1526                         return;
1527                 }
1528
1529                 $stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
1530                 $stats->increment( 'edit.failures.conflict.resolved' );
1531         }
1532
1533         /**
1534          * Handle status, such as after attempt save
1535          *
1536          * @param Status $status
1537          * @param array|bool $resultDetails
1538          *
1539          * @throws ErrorPageError
1540          * @return bool False, if output is done, true if rest of the form should be displayed
1541          */
1542         private function handleStatus( Status $status, $resultDetails ) {
1543                 /**
1544                  * @todo FIXME: once the interface for internalAttemptSave() is made
1545                  *   nicer, this should use the message in $status
1546                  */
1547                 if ( $status->value == self::AS_SUCCESS_UPDATE
1548                         || $status->value == self::AS_SUCCESS_NEW_ARTICLE
1549                 ) {
1550                         $this->incrementResolvedConflicts();
1551
1552                         $this->didSave = true;
1553                         if ( !$resultDetails['nullEdit'] ) {
1554                                 $this->setPostEditCookie( $status->value );
1555                         }
1556                 }
1557
1558                 $out = $this->context->getOutput();
1559
1560                 // "wpExtraQueryRedirect" is a hidden input to modify
1561                 // after save URL and is not used by actual edit form
1562                 $request = $this->context->getRequest();
1563                 $extraQueryRedirect = $request->getVal( 'wpExtraQueryRedirect' );
1564
1565                 switch ( $status->value ) {
1566                         case self::AS_HOOK_ERROR_EXPECTED:
1567                         case self::AS_CONTENT_TOO_BIG:
1568                         case self::AS_ARTICLE_WAS_DELETED:
1569                         case self::AS_CONFLICT_DETECTED:
1570                         case self::AS_SUMMARY_NEEDED:
1571                         case self::AS_TEXTBOX_EMPTY:
1572                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1573                         case self::AS_END:
1574                         case self::AS_BLANK_ARTICLE:
1575                         case self::AS_SELF_REDIRECT:
1576                                 return true;
1577
1578                         case self::AS_HOOK_ERROR:
1579                                 return false;
1580
1581                         case self::AS_CANNOT_USE_CUSTOM_MODEL:
1582                         case self::AS_PARSE_ERROR:
1583                         case self::AS_UNICODE_NOT_SUPPORTED:
1584                                 $out->addWikiText( '<div class="error">' . "\n" . $status->getWikiText() . '</div>' );
1585                                 return true;
1586
1587                         case self::AS_SUCCESS_NEW_ARTICLE:
1588                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1589                                 if ( $extraQueryRedirect ) {
1590                                         if ( $query === '' ) {
1591                                                 $query = $extraQueryRedirect;
1592                                         } else {
1593                                                 $query = $query . '&' . $extraQueryRedirect;
1594                                         }
1595                                 }
1596                                 $anchor = isset( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1597                                 $out->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1598                                 return false;
1599
1600                         case self::AS_SUCCESS_UPDATE:
1601                                 $extraQuery = '';
1602                                 $sectionanchor = $resultDetails['sectionanchor'];
1603
1604                                 // Give extensions a chance to modify URL query on update
1605                                 Hooks::run(
1606                                         'ArticleUpdateBeforeRedirect',
1607                                         [ $this->mArticle, &$sectionanchor, &$extraQuery ]
1608                                 );
1609
1610                                 if ( $resultDetails['redirect'] ) {
1611                                         if ( $extraQuery == '' ) {
1612                                                 $extraQuery = 'redirect=no';
1613                                         } else {
1614                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1615                                         }
1616                                 }
1617                                 if ( $extraQueryRedirect ) {
1618                                         if ( $extraQuery === '' ) {
1619                                                 $extraQuery = $extraQueryRedirect;
1620                                         } else {
1621                                                 $extraQuery = $extraQuery . '&' . $extraQueryRedirect;
1622                                         }
1623                                 }
1624
1625                                 $out->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1626                                 return false;
1627
1628                         case self::AS_SPAM_ERROR:
1629                                 $this->spamPageWithContent( $resultDetails['spam'] );
1630                                 return false;
1631
1632                         case self::AS_BLOCKED_PAGE_FOR_USER:
1633                                 throw new UserBlockedError( $this->context->getUser()->getBlock() );
1634
1635                         case self::AS_IMAGE_REDIRECT_ANON:
1636                         case self::AS_IMAGE_REDIRECT_LOGGED:
1637                                 throw new PermissionsError( 'upload' );
1638
1639                         case self::AS_READ_ONLY_PAGE_ANON:
1640                         case self::AS_READ_ONLY_PAGE_LOGGED:
1641                                 throw new PermissionsError( 'edit' );
1642
1643                         case self::AS_READ_ONLY_PAGE:
1644                                 throw new ReadOnlyError;
1645
1646                         case self::AS_RATE_LIMITED:
1647                                 throw new ThrottledError();
1648
1649                         case self::AS_NO_CREATE_PERMISSION:
1650                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1651                                 throw new PermissionsError( $permission );
1652
1653                         case self::AS_NO_CHANGE_CONTENT_MODEL:
1654                                 throw new PermissionsError( 'editcontentmodel' );
1655
1656                         default:
1657                                 // We don't recognize $status->value. The only way that can happen
1658                                 // is if an extension hook aborted from inside ArticleSave.
1659                                 // Render the status object into $this->hookError
1660                                 // FIXME this sucks, we should just use the Status object throughout
1661                                 $this->hookError = '<div class="error">' ."\n" . $status->getWikiText() .
1662                                         '</div>';
1663                                 return true;
1664                 }
1665         }
1666
1667         /**
1668          * Run hooks that can filter edits just before they get saved.
1669          *
1670          * @param Content $content The Content to filter.
1671          * @param Status $status For reporting the outcome to the caller
1672          * @param User $user The user performing the edit
1673          *
1674          * @return bool
1675          */
1676         protected function runPostMergeFilters( Content $content, Status $status, User $user ) {
1677                 // Run old style post-section-merge edit filter
1678                 if ( $this->hookError != '' ) {
1679                         # ...or the hook could be expecting us to produce an error
1680                         $status->fatal( 'hookaborted' );
1681                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1682                         return false;
1683                 }
1684
1685                 // Run new style post-section-merge edit filter
1686                 if ( !Hooks::run( 'EditFilterMergedContent',
1687                                 [ $this->context, $content, $status, $this->summary,
1688                                 $user, $this->minoredit ] )
1689                 ) {
1690                         # Error messages etc. could be handled within the hook...
1691                         if ( $status->isGood() ) {
1692                                 $status->fatal( 'hookaborted' );
1693                                 // Not setting $this->hookError here is a hack to allow the hook
1694                                 // to cause a return to the edit page without $this->hookError
1695                                 // being set. This is used by ConfirmEdit to display a captcha
1696                                 // without any error message cruft.
1697                         } else {
1698                                 $this->hookError = $status->getWikiText();
1699                         }
1700                         // Use the existing $status->value if the hook set it
1701                         if ( !$status->value ) {
1702                                 $status->value = self::AS_HOOK_ERROR;
1703                         }
1704                         return false;
1705                 } elseif ( !$status->isOK() ) {
1706                         # ...or the hook could be expecting us to produce an error
1707                         // FIXME this sucks, we should just use the Status object throughout
1708                         $this->hookError = $status->getWikiText();
1709                         $status->fatal( 'hookaborted' );
1710                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1711                         return false;
1712                 }
1713
1714                 return true;
1715         }
1716
1717         /**
1718          * Return the summary to be used for a new section.
1719          *
1720          * @param string $sectionanchor Set to the section anchor text
1721          * @return string
1722          */
1723         private function newSectionSummary( &$sectionanchor = null ) {
1724                 global $wgParser;
1725
1726                 if ( $this->sectiontitle !== '' ) {
1727                         $sectionanchor = $this->guessSectionName( $this->sectiontitle );
1728                         // If no edit summary was specified, create one automatically from the section
1729                         // title and have it link to the new section. Otherwise, respect the summary as
1730                         // passed.
1731                         if ( $this->summary === '' ) {
1732                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1733                                 return $this->context->msg( 'newsectionsummary' )
1734                                         ->rawParams( $cleanSectionTitle )->inContentLanguage()->text();
1735                         }
1736                 } elseif ( $this->summary !== '' ) {
1737                         $sectionanchor = $this->guessSectionName( $this->summary );
1738                         # This is a new section, so create a link to the new section
1739                         # in the revision summary.
1740                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1741                         return $this->context->msg( 'newsectionsummary' )
1742                                 ->rawParams( $cleanSummary )->inContentLanguage()->text();
1743                 }
1744                 return $this->summary;
1745         }
1746
1747         /**
1748          * Attempt submission (no UI)
1749          *
1750          * @param array &$result Array to add statuses to, currently with the
1751          *   possible keys:
1752          *   - spam (string): Spam string from content if any spam is detected by
1753          *     matchSpamRegex.
1754          *   - sectionanchor (string): Section anchor for a section save.
1755          *   - nullEdit (bool): Set if doEditContent is OK.  True if null edit,
1756          *     false otherwise.
1757          *   - redirect (bool): Set if doEditContent is OK. True if resulting
1758          *     revision is a redirect.
1759          * @param bool $bot True if edit is being made under the bot right.
1760          *
1761          * @return Status Status object, possibly with a message, but always with
1762          *   one of the AS_* constants in $status->value,
1763          *
1764          * @todo FIXME: This interface is TERRIBLE, but hard to get rid of due to
1765          *   various error display idiosyncrasies. There are also lots of cases
1766          *   where error metadata is set in the object and retrieved later instead
1767          *   of being returned, e.g. AS_CONTENT_TOO_BIG and
1768          *   AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some
1769          * time.
1770          */
1771         public function internalAttemptSave( &$result, $bot = false ) {
1772                 $status = Status::newGood();
1773                 $user = $this->context->getUser();
1774
1775                 if ( !Hooks::run( 'EditPage::attemptSave', [ $this ] ) ) {
1776                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1777                         $status->fatal( 'hookaborted' );
1778                         $status->value = self::AS_HOOK_ERROR;
1779                         return $status;
1780                 }
1781
1782                 if ( $this->unicodeCheck !== self::UNICODE_CHECK ) {
1783                         $status->fatal( 'unicode-support-fail' );
1784                         $status->value = self::AS_UNICODE_NOT_SUPPORTED;
1785                         return $status;
1786                 }
1787
1788                 $request = $this->context->getRequest();
1789                 $spam = $request->getText( 'wpAntispam' );
1790                 if ( $spam !== '' ) {
1791                         wfDebugLog(
1792                                 'SimpleAntiSpam',
1793                                 $user->getName() .
1794                                 ' editing "' .
1795                                 $this->mTitle->getPrefixedText() .
1796                                 '" submitted bogus field "' .
1797                                 $spam .
1798                                 '"'
1799                         );
1800                         $status->fatal( 'spamprotectionmatch', false );
1801                         $status->value = self::AS_SPAM_ERROR;
1802                         return $status;
1803                 }
1804
1805                 try {
1806                         # Construct Content object
1807                         $textbox_content = $this->toEditContent( $this->textbox1 );
1808                 } catch ( MWContentSerializationException $ex ) {
1809                         $status->fatal(
1810                                 'content-failed-to-parse',
1811                                 $this->contentModel,
1812                                 $this->contentFormat,
1813                                 $ex->getMessage()
1814                         );
1815                         $status->value = self::AS_PARSE_ERROR;
1816                         return $status;
1817                 }
1818
1819                 # Check image redirect
1820                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1821                         $textbox_content->isRedirect() &&
1822                         !$user->isAllowed( 'upload' )
1823                 ) {
1824                                 $code = $user->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1825                                 $status->setResult( false, $code );
1826
1827                                 return $status;
1828                 }
1829
1830                 # Check for spam
1831                 $match = self::matchSummarySpamRegex( $this->summary );
1832                 if ( $match === false && $this->section == 'new' ) {
1833                         # $wgSpamRegex is enforced on this new heading/summary because, unlike
1834                         # regular summaries, it is added to the actual wikitext.
1835                         if ( $this->sectiontitle !== '' ) {
1836                                 # This branch is taken when the API is used with the 'sectiontitle' parameter.
1837                                 $match = self::matchSpamRegex( $this->sectiontitle );
1838                         } else {
1839                                 # This branch is taken when the "Add Topic" user interface is used, or the API
1840                                 # is used with the 'summary' parameter.
1841                                 $match = self::matchSpamRegex( $this->summary );
1842                         }
1843                 }
1844                 if ( $match === false ) {
1845                         $match = self::matchSpamRegex( $this->textbox1 );
1846                 }
1847                 if ( $match !== false ) {
1848                         $result['spam'] = $match;
1849                         $ip = $request->getIP();
1850                         $pdbk = $this->mTitle->getPrefixedDBkey();
1851                         $match = str_replace( "\n", '', $match );
1852                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1853                         $status->fatal( 'spamprotectionmatch', $match );
1854                         $status->value = self::AS_SPAM_ERROR;
1855                         return $status;
1856                 }
1857                 if ( !Hooks::run(
1858                         'EditFilter',
1859                         [ $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ] )
1860                 ) {
1861                         # Error messages etc. could be handled within the hook...
1862                         $status->fatal( 'hookaborted' );
1863                         $status->value = self::AS_HOOK_ERROR;
1864                         return $status;
1865                 } elseif ( $this->hookError != '' ) {
1866                         # ...or the hook could be expecting us to produce an error
1867                         $status->fatal( 'hookaborted' );
1868                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1869                         return $status;
1870                 }
1871
1872                 if ( $user->isBlockedFrom( $this->mTitle, false ) ) {
1873                         // Auto-block user's IP if the account was "hard" blocked
1874                         if ( !wfReadOnly() ) {
1875                                 $user->spreadAnyEditBlock();
1876                         }
1877                         # Check block state against master, thus 'false'.
1878                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1879                         return $status;
1880                 }
1881
1882                 $this->contentLength = strlen( $this->textbox1 );
1883                 $config = $this->context->getConfig();
1884                 $maxArticleSize = $config->get( 'MaxArticleSize' );
1885                 if ( $this->contentLength > $maxArticleSize * 1024 ) {
1886                         // Error will be displayed by showEditForm()
1887                         $this->tooBig = true;
1888                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1889                         return $status;
1890                 }
1891
1892                 if ( !$user->isAllowed( 'edit' ) ) {
1893                         if ( $user->isAnon() ) {
1894                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1895                                 return $status;
1896                         } else {
1897                                 $status->fatal( 'readonlytext' );
1898                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1899                                 return $status;
1900                         }
1901                 }
1902
1903                 $changingContentModel = false;
1904                 if ( $this->contentModel !== $this->mTitle->getContentModel() ) {
1905                         if ( !$config->get( 'ContentHandlerUseDB' ) ) {
1906                                 $status->fatal( 'editpage-cannot-use-custom-model' );
1907                                 $status->value = self::AS_CANNOT_USE_CUSTOM_MODEL;
1908                                 return $status;
1909                         } elseif ( !$user->isAllowed( 'editcontentmodel' ) ) {
1910                                 $status->setResult( false, self::AS_NO_CHANGE_CONTENT_MODEL );
1911                                 return $status;
1912                         }
1913                         // Make sure the user can edit the page under the new content model too
1914                         $titleWithNewContentModel = clone $this->mTitle;
1915                         $titleWithNewContentModel->setContentModel( $this->contentModel );
1916                         if ( !$titleWithNewContentModel->userCan( 'editcontentmodel', $user )
1917                                 || !$titleWithNewContentModel->userCan( 'edit', $user )
1918                         ) {
1919                                 $status->setResult( false, self::AS_NO_CHANGE_CONTENT_MODEL );
1920                                 return $status;
1921                         }
1922
1923                         $changingContentModel = true;
1924                         $oldContentModel = $this->mTitle->getContentModel();
1925                 }
1926
1927                 if ( $this->changeTags ) {
1928                         $changeTagsStatus = ChangeTags::canAddTagsAccompanyingChange(
1929                                 $this->changeTags, $user );
1930                         if ( !$changeTagsStatus->isOK() ) {
1931                                 $changeTagsStatus->value = self::AS_CHANGE_TAG_ERROR;
1932                                 return $changeTagsStatus;
1933                         }
1934                 }
1935
1936                 if ( wfReadOnly() ) {
1937                         $status->fatal( 'readonlytext' );
1938                         $status->value = self::AS_READ_ONLY_PAGE;
1939                         return $status;
1940                 }
1941                 if ( $user->pingLimiter() || $user->pingLimiter( 'linkpurge', 0 )
1942                         || ( $changingContentModel && $user->pingLimiter( 'editcontentmodel' ) )
1943                 ) {
1944                         $status->fatal( 'actionthrottledtext' );
1945                         $status->value = self::AS_RATE_LIMITED;
1946                         return $status;
1947                 }
1948
1949                 # If the article has been deleted while editing, don't save it without
1950                 # confirmation
1951                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1952                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1953                         return $status;
1954                 }
1955
1956                 # Load the page data from the master. If anything changes in the meantime,
1957                 # we detect it by using page_latest like a token in a 1 try compare-and-swap.
1958                 $this->page->loadPageData( 'fromdbmaster' );
1959                 $new = !$this->page->exists();
1960
1961                 if ( $new ) {
1962                         // Late check for create permission, just in case *PARANOIA*
1963                         if ( !$this->mTitle->userCan( 'create', $user ) ) {
1964                                 $status->fatal( 'nocreatetext' );
1965                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1966                                 wfDebug( __METHOD__ . ": no create permission\n" );
1967                                 return $status;
1968                         }
1969
1970                         // Don't save a new page if it's blank or if it's a MediaWiki:
1971                         // message with content equivalent to default (allow empty pages
1972                         // in this case to disable messages, see T52124)
1973                         $defaultMessageText = $this->mTitle->getDefaultMessageText();
1974                         if ( $this->mTitle->getNamespace() === NS_MEDIAWIKI && $defaultMessageText !== false ) {
1975                                 $defaultText = $defaultMessageText;
1976                         } else {
1977                                 $defaultText = '';
1978                         }
1979
1980                         if ( !$this->allowBlankArticle && $this->textbox1 === $defaultText ) {
1981                                 $this->blankArticle = true;
1982                                 $status->fatal( 'blankarticle' );
1983                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1984                                 return $status;
1985                         }
1986
1987                         if ( !$this->runPostMergeFilters( $textbox_content, $status, $user ) ) {
1988                                 return $status;
1989                         }
1990
1991                         $content = $textbox_content;
1992
1993                         $result['sectionanchor'] = '';
1994                         if ( $this->section == 'new' ) {
1995                                 if ( $this->sectiontitle !== '' ) {
1996                                         // Insert the section title above the content.
1997                                         $content = $content->addSectionHeader( $this->sectiontitle );
1998                                 } elseif ( $this->summary !== '' ) {
1999                                         // Insert the section title above the content.
2000                                         $content = $content->addSectionHeader( $this->summary );
2001                                 }
2002                                 $this->summary = $this->newSectionSummary( $result['sectionanchor'] );
2003                         }
2004
2005                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
2006
2007                 } else { # not $new
2008
2009                         # Article exists. Check for edit conflict.
2010
2011                         $this->page->clear(); # Force reload of dates, etc.
2012                         $timestamp = $this->page->getTimestamp();
2013                         $latest = $this->page->getLatest();
2014
2015                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
2016
2017                         // Check editRevId if set, which handles same-second timestamp collisions
2018                         if ( $timestamp != $this->edittime
2019                                 || ( $this->editRevId !== null && $this->editRevId != $latest )
2020                         ) {
2021                                 $this->isConflict = true;
2022                                 if ( $this->section == 'new' ) {
2023                                         if ( $this->page->getUserText() == $user->getName() &&
2024                                                 $this->page->getComment() == $this->newSectionSummary()
2025                                         ) {
2026                                                 // Probably a duplicate submission of a new comment.
2027                                                 // This can happen when CDN resends a request after
2028                                                 // a timeout but the first one actually went through.
2029                                                 wfDebug( __METHOD__
2030                                                         . ": duplicate new section submission; trigger edit conflict!\n" );
2031                                         } else {
2032                                                 // New comment; suppress conflict.
2033                                                 $this->isConflict = false;
2034                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
2035                                         }
2036                                 } elseif ( $this->section == ''
2037                                         && Revision::userWasLastToEdit(
2038                                                 DB_MASTER, $this->mTitle->getArticleID(),
2039                                                 $user->getId(), $this->edittime
2040                                         )
2041                                 ) {
2042                                         # Suppress edit conflict with self, except for section edits where merging is required.
2043                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
2044                                         $this->isConflict = false;
2045                                 }
2046                         }
2047
2048                         // If sectiontitle is set, use it, otherwise use the summary as the section title.
2049                         if ( $this->sectiontitle !== '' ) {
2050                                 $sectionTitle = $this->sectiontitle;
2051                         } else {
2052                                 $sectionTitle = $this->summary;
2053                         }
2054
2055                         $content = null;
2056
2057                         if ( $this->isConflict ) {
2058                                 wfDebug( __METHOD__
2059                                         . ": conflict! getting section '{$this->section}' for time '{$this->edittime}'"
2060                                         . " (id '{$this->editRevId}') (article time '{$timestamp}')\n" );
2061                                 // @TODO: replaceSectionAtRev() with base ID (not prior current) for ?oldid=X case
2062                                 // ...or disable section editing for non-current revisions (not exposed anyway).
2063                                 if ( $this->editRevId !== null ) {
2064                                         $content = $this->page->replaceSectionAtRev(
2065                                                 $this->section,
2066                                                 $textbox_content,
2067                                                 $sectionTitle,
2068                                                 $this->editRevId
2069                                         );
2070                                 } else {
2071                                         $content = $this->page->replaceSectionContent(
2072                                                 $this->section,
2073                                                 $textbox_content,
2074                                                 $sectionTitle,
2075                                                 $this->edittime
2076                                         );
2077                                 }
2078                         } else {
2079                                 wfDebug( __METHOD__ . ": getting section '{$this->section}'\n" );
2080                                 $content = $this->page->replaceSectionContent(
2081                                         $this->section,
2082                                         $textbox_content,
2083                                         $sectionTitle
2084                                 );
2085                         }
2086
2087                         if ( is_null( $content ) ) {
2088                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
2089                                 $this->isConflict = true;
2090                                 $content = $textbox_content; // do not try to merge here!
2091                         } elseif ( $this->isConflict ) {
2092                                 # Attempt merge
2093                                 if ( $this->mergeChangesIntoContent( $content ) ) {
2094                                         // Successful merge! Maybe we should tell the user the good news?
2095                                         $this->isConflict = false;
2096                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
2097                                 } else {
2098                                         $this->section = '';
2099                                         $this->textbox1 = ContentHandler::getContentText( $content );
2100                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
2101                                 }
2102                         }
2103
2104                         if ( $this->isConflict ) {
2105                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
2106                                 return $status;
2107                         }
2108
2109                         if ( !$this->runPostMergeFilters( $content, $status, $user ) ) {
2110                                 return $status;
2111                         }
2112
2113                         if ( $this->section == 'new' ) {
2114                                 // Handle the user preference to force summaries here
2115                                 if ( !$this->allowBlankSummary && trim( $this->summary ) == '' ) {
2116                                         $this->missingSummary = true;
2117                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
2118                                         $status->value = self::AS_SUMMARY_NEEDED;
2119                                         return $status;
2120                                 }
2121
2122                                 // Do not allow the user to post an empty comment
2123                                 if ( $this->textbox1 == '' ) {
2124                                         $this->missingComment = true;
2125                                         $status->fatal( 'missingcommenttext' );
2126                                         $status->value = self::AS_TEXTBOX_EMPTY;
2127                                         return $status;
2128                                 }
2129                         } elseif ( !$this->allowBlankSummary
2130                                 && !$content->equals( $this->getOriginalContent( $user ) )
2131                                 && !$content->isRedirect()
2132                                 && md5( $this->summary ) == $this->autoSumm
2133                         ) {
2134                                 $this->missingSummary = true;
2135                                 $status->fatal( 'missingsummary' );
2136                                 $status->value = self::AS_SUMMARY_NEEDED;
2137                                 return $status;
2138                         }
2139
2140                         # All's well
2141                         $sectionanchor = '';
2142                         if ( $this->section == 'new' ) {
2143                                 $this->summary = $this->newSectionSummary( $sectionanchor );
2144                         } elseif ( $this->section != '' ) {
2145                                 # Try to get a section anchor from the section source, redirect
2146                                 # to edited section if header found.
2147                                 # XXX: Might be better to integrate this into Article::replaceSectionAtRev
2148                                 # for duplicate heading checking and maybe parsing.
2149                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
2150                                 # We can't deal with anchors, includes, html etc in the header for now,
2151                                 # headline would need to be parsed to improve this.
2152                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
2153                                         $sectionanchor = $this->guessSectionName( $matches[2] );
2154                                 }
2155                         }
2156                         $result['sectionanchor'] = $sectionanchor;
2157
2158                         // Save errors may fall down to the edit form, but we've now
2159                         // merged the section into full text. Clear the section field
2160                         // so that later submission of conflict forms won't try to
2161                         // replace that into a duplicated mess.
2162                         $this->textbox1 = $this->toEditText( $content );
2163                         $this->section = '';
2164
2165                         $status->value = self::AS_SUCCESS_UPDATE;
2166                 }
2167
2168                 if ( !$this->allowSelfRedirect
2169                         && $content->isRedirect()
2170                         && $content->getRedirectTarget()->equals( $this->getTitle() )
2171                 ) {
2172                         // If the page already redirects to itself, don't warn.
2173                         $currentTarget = $this->getCurrentContent()->getRedirectTarget();
2174                         if ( !$currentTarget || !$currentTarget->equals( $this->getTitle() ) ) {
2175                                 $this->selfRedirect = true;
2176                                 $status->fatal( 'selfredirect' );
2177                                 $status->value = self::AS_SELF_REDIRECT;
2178                                 return $status;
2179                         }
2180                 }
2181
2182                 // Check for length errors again now that the section is merged in
2183                 $this->contentLength = strlen( $this->toEditText( $content ) );
2184                 if ( $this->contentLength > $maxArticleSize * 1024 ) {
2185                         $this->tooBig = true;
2186                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
2187                         return $status;
2188                 }
2189
2190                 $flags = EDIT_AUTOSUMMARY |
2191                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
2192                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
2193                         ( $bot ? EDIT_FORCE_BOT : 0 );
2194
2195                 $doEditStatus = $this->page->doEditContent(
2196                         $content,
2197                         $this->summary,
2198                         $flags,
2199                         false,
2200                         $user,
2201                         $content->getDefaultFormat(),
2202                         $this->changeTags,
2203                         $this->undidRev
2204                 );
2205
2206                 if ( !$doEditStatus->isOK() ) {
2207                         // Failure from doEdit()
2208                         // Show the edit conflict page for certain recognized errors from doEdit(),
2209                         // but don't show it for errors from extension hooks
2210                         $errors = $doEditStatus->getErrorsArray();
2211                         if ( in_array( $errors[0][0],
2212                                         [ 'edit-gone-missing', 'edit-conflict', 'edit-already-exists' ] )
2213                         ) {
2214                                 $this->isConflict = true;
2215                                 // Destroys data doEdit() put in $status->value but who cares
2216                                 $doEditStatus->value = self::AS_END;
2217                         }
2218                         return $doEditStatus;
2219                 }
2220
2221                 $result['nullEdit'] = $doEditStatus->hasMessage( 'edit-no-change' );
2222                 if ( $result['nullEdit'] ) {
2223                         // We don't know if it was a null edit until now, so increment here
2224                         $user->pingLimiter( 'linkpurge' );
2225                 }
2226                 $result['redirect'] = $content->isRedirect();
2227
2228                 $this->updateWatchlist();
2229
2230                 // If the content model changed, add a log entry
2231                 if ( $changingContentModel ) {
2232                         $this->addContentModelChangeLogEntry(
2233                                 $user,
2234                                 $new ? false : $oldContentModel,
2235                                 $this->contentModel,
2236                                 $this->summary
2237                         );
2238                 }
2239
2240                 return $status;
2241         }
2242
2243         /**
2244          * @param User $user
2245          * @param string|false $oldModel false if the page is being newly created
2246          * @param string $newModel
2247          * @param string $reason
2248          */
2249         protected function addContentModelChangeLogEntry( User $user, $oldModel, $newModel, $reason ) {
2250                 $new = $oldModel === false;
2251                 $log = new ManualLogEntry( 'contentmodel', $new ? 'new' : 'change' );
2252                 $log->setPerformer( $user );
2253                 $log->setTarget( $this->mTitle );
2254                 $log->setComment( $reason );
2255                 $log->setParameters( [
2256                         '4::oldmodel' => $oldModel,
2257                         '5::newmodel' => $newModel
2258                 ] );
2259                 $logid = $log->insert();
2260                 $log->publish( $logid );
2261         }
2262
2263         /**
2264          * Register the change of watch status
2265          */
2266         protected function updateWatchlist() {
2267                 $user = $this->context->getUser();
2268                 if ( !$user->isLoggedIn() ) {
2269                         return;
2270                 }
2271
2272                 $title = $this->mTitle;
2273                 $watch = $this->watchthis;
2274                 // Do this in its own transaction to reduce contention...
2275                 DeferredUpdates::addCallableUpdate( function () use ( $user, $title, $watch ) {
2276                         if ( $watch == $user->isWatched( $title, User::IGNORE_USER_RIGHTS ) ) {
2277                                 return; // nothing to change
2278                         }
2279                         WatchAction::doWatchOrUnwatch( $watch, $title, $user );
2280                 } );
2281         }
2282
2283         /**
2284          * Attempts to do 3-way merge of edit content with a base revision
2285          * and current content, in case of edit conflict, in whichever way appropriate
2286          * for the content type.
2287          *
2288          * @since 1.21
2289          *
2290          * @param Content $editContent
2291          *
2292          * @return bool
2293          */
2294         private function mergeChangesIntoContent( &$editContent ) {
2295                 $db = wfGetDB( DB_MASTER );
2296
2297                 // This is the revision the editor started from
2298                 $baseRevision = $this->getBaseRevision();
2299                 $baseContent = $baseRevision ? $baseRevision->getContent() : null;
2300
2301                 if ( is_null( $baseContent ) ) {
2302                         return false;
2303                 }
2304
2305                 // The current state, we want to merge updates into it
2306                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2307                 $currentContent = $currentRevision ? $currentRevision->getContent() : null;
2308
2309                 if ( is_null( $currentContent ) ) {
2310                         return false;
2311                 }
2312
2313                 $handler = ContentHandler::getForModelID( $baseContent->getModel() );
2314
2315                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
2316
2317                 if ( $result ) {
2318                         $editContent = $result;
2319                         // Update parentRevId to what we just merged.
2320                         $this->parentRevId = $currentRevision->getId();
2321                         return true;
2322                 }
2323
2324                 return false;
2325         }
2326
2327         /**
2328          * @note: this method is very poorly named. If the user opened the form with ?oldid=X,
2329          *        one might think of X as the "base revision", which is NOT what this returns.
2330          * @return Revision Current version when the edit was started
2331          */
2332         public function getBaseRevision() {
2333                 if ( !$this->mBaseRevision ) {
2334                         $db = wfGetDB( DB_MASTER );
2335                         $this->mBaseRevision = $this->editRevId
2336                                 ? Revision::newFromId( $this->editRevId, Revision::READ_LATEST )
2337                                 : Revision::loadFromTimestamp( $db, $this->mTitle, $this->edittime );
2338                 }
2339                 return $this->mBaseRevision;
2340         }
2341
2342         /**
2343          * Check given input text against $wgSpamRegex, and return the text of the first match.
2344          *
2345          * @param string $text
2346          *
2347          * @return string|bool Matching string or false
2348          */
2349         public static function matchSpamRegex( $text ) {
2350                 global $wgSpamRegex;
2351                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
2352                 $regexes = (array)$wgSpamRegex;
2353                 return self::matchSpamRegexInternal( $text, $regexes );
2354         }
2355
2356         /**
2357          * Check given input text against $wgSummarySpamRegex, and return the text of the first match.
2358          *
2359          * @param string $text
2360          *
2361          * @return string|bool Matching string or false
2362          */
2363         public static function matchSummarySpamRegex( $text ) {
2364                 global $wgSummarySpamRegex;
2365                 $regexes = (array)$wgSummarySpamRegex;
2366                 return self::matchSpamRegexInternal( $text, $regexes );
2367         }
2368
2369         /**
2370          * @param string $text
2371          * @param array $regexes
2372          * @return bool|string
2373          */
2374         protected static function matchSpamRegexInternal( $text, $regexes ) {
2375                 foreach ( $regexes as $regex ) {
2376                         $matches = [];
2377                         if ( preg_match( $regex, $text, $matches ) ) {
2378                                 return $matches[0];
2379                         }
2380                 }
2381                 return false;
2382         }
2383
2384         public function setHeaders() {
2385                 $out = $this->context->getOutput();
2386
2387                 $out->addModules( 'mediawiki.action.edit' );
2388                 $out->addModuleStyles( 'mediawiki.action.edit.styles' );
2389
2390                 $user = $this->context->getUser();
2391                 if ( $user->getOption( 'showtoolbar' ) ) {
2392                         // The addition of default buttons is handled by getEditToolbar() which
2393                         // has its own dependency on this module. The call here ensures the module
2394                         // is loaded in time (it has position "top") for other modules to register
2395                         // buttons (e.g. extensions, gadgets, user scripts).
2396                         $out->addModules( 'mediawiki.toolbar' );
2397                 }
2398
2399                 if ( $user->getOption( 'uselivepreview' ) ) {
2400                         $out->addModules( 'mediawiki.action.edit.preview' );
2401                 }
2402
2403                 if ( $user->getOption( 'useeditwarning' ) ) {
2404                         $out->addModules( 'mediawiki.action.edit.editWarning' );
2405                 }
2406
2407                 # Enabled article-related sidebar, toplinks, etc.
2408                 $out->setArticleRelated( true );
2409
2410                 $contextTitle = $this->getContextTitle();
2411                 if ( $this->isConflict ) {
2412                         $msg = 'editconflict';
2413                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
2414                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
2415                 } else {
2416                         $msg = $contextTitle->exists()
2417                                 || ( $contextTitle->getNamespace() == NS_MEDIAWIKI
2418                                         && $contextTitle->getDefaultMessageText() !== false
2419                                 )
2420                                 ? 'editing'
2421                                 : 'creating';
2422                 }
2423
2424                 # Use the title defined by DISPLAYTITLE magic word when present
2425                 # NOTE: getDisplayTitle() returns HTML while getPrefixedText() returns plain text.
2426                 #       setPageTitle() treats the input as wikitext, which should be safe in either case.
2427                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
2428                 if ( $displayTitle === false ) {
2429                         $displayTitle = $contextTitle->getPrefixedText();
2430                 }
2431                 $out->setPageTitle( $this->context->msg( $msg, $displayTitle ) );
2432                 # Transmit the name of the message to JavaScript for live preview
2433                 # Keep Resources.php/mediawiki.action.edit.preview in sync with the possible keys
2434                 $out->addJsConfigVars( [
2435                         'wgEditMessage' => $msg,
2436                         'wgAjaxEditStash' => $this->context->getConfig()->get( 'AjaxEditStash' ),
2437                 ] );
2438         }
2439
2440         /**
2441          * Show all applicable editing introductions
2442          */
2443         protected function showIntro() {
2444                 if ( $this->suppressIntro ) {
2445                         return;
2446                 }
2447
2448                 $out = $this->context->getOutput();
2449                 $namespace = $this->mTitle->getNamespace();
2450
2451                 if ( $namespace == NS_MEDIAWIKI ) {
2452                         # Show a warning if editing an interface message
2453                         $out->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
2454                         # If this is a default message (but not css or js),
2455                         # show a hint that it is translatable on translatewiki.net
2456                         if ( !$this->mTitle->hasContentModel( CONTENT_MODEL_CSS )
2457                                 && !$this->mTitle->hasContentModel( CONTENT_MODEL_JAVASCRIPT )
2458                         ) {
2459                                 $defaultMessageText = $this->mTitle->getDefaultMessageText();
2460                                 if ( $defaultMessageText !== false ) {
2461                                         $out->wrapWikiMsg( "<div class='mw-translateinterface'>\n$1\n</div>",
2462                                                 'translateinterface' );
2463                                 }
2464                         }
2465                 } elseif ( $namespace == NS_FILE ) {
2466                         # Show a hint to shared repo
2467                         $file = wfFindFile( $this->mTitle );
2468                         if ( $file && !$file->isLocal() ) {
2469                                 $descUrl = $file->getDescriptionUrl();
2470                                 # there must be a description url to show a hint to shared repo
2471                                 if ( $descUrl ) {
2472                                         if ( !$this->mTitle->exists() ) {
2473                                                 $out->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", [
2474                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
2475                                                 ] );
2476                                         } else {
2477                                                 $out->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", [
2478                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
2479                                                 ] );
2480                                         }
2481                                 }
2482                         }
2483                 }
2484
2485                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
2486                 # Show log extract when the user is currently blocked
2487                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
2488                         $username = explode( '/', $this->mTitle->getText(), 2 )[0];
2489                         $user = User::newFromName( $username, false /* allow IP users */ );
2490                         $ip = User::isIP( $username );
2491                         $block = Block::newFromTarget( $user, $user );
2492                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
2493                                 $out->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
2494                                         [ 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ] );
2495                         } elseif ( !is_null( $block ) && $block->getType() != Block::TYPE_AUTO ) {
2496                                 # Show log extract if the user is currently blocked
2497                                 LogEventsList::showLogExtract(
2498                                         $out,
2499                                         'block',
2500                                         MWNamespace::getCanonicalName( NS_USER ) . ':' . $block->getTarget(),
2501                                         '',
2502                                         [
2503                                                 'lim' => 1,
2504                                                 'showIfEmpty' => false,
2505                                                 'msgKey' => [
2506                                                         'blocked-notice-logextract',
2507                                                         $user->getName() # Support GENDER in notice
2508                                                 ]
2509                                         ]
2510                                 );
2511                         }
2512                 }
2513                 # Try to add a custom edit intro, or use the standard one if this is not possible.
2514                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
2515                         $helpLink = wfExpandUrl( Skin::makeInternalOrExternalUrl(
2516                                 $this->context->msg( 'helppage' )->inContentLanguage()->text()
2517                         ) );
2518                         if ( $this->context->getUser()->isLoggedIn() ) {
2519                                 $out->wrapWikiMsg(
2520                                         // Suppress the external link icon, consider the help url an internal one
2521                                         "<div class=\"mw-newarticletext plainlinks\">\n$1\n</div>",
2522                                         [
2523                                                 'newarticletext',
2524                                                 $helpLink
2525                                         ]
2526                                 );
2527                         } else {
2528                                 $out->wrapWikiMsg(
2529                                         // Suppress the external link icon, consider the help url an internal one
2530                                         "<div class=\"mw-newarticletextanon plainlinks\">\n$1\n</div>",
2531                                         [
2532                                                 'newarticletextanon',
2533                                                 $helpLink
2534                                         ]
2535                                 );
2536                         }
2537                 }
2538                 # Give a notice if the user is editing a deleted/moved page...
2539                 if ( !$this->mTitle->exists() ) {
2540                         $dbr = wfGetDB( DB_REPLICA );
2541
2542                         LogEventsList::showLogExtract( $out, [ 'delete', 'move' ], $this->mTitle,
2543                                 '',
2544                                 [
2545                                         'lim' => 10,
2546                                         'conds' => [ 'log_action != ' . $dbr->addQuotes( 'revision' ) ],
2547                                         'showIfEmpty' => false,
2548                                         'msgKey' => [ 'recreate-moveddeleted-warn' ]
2549                                 ]
2550                         );
2551                 }
2552         }
2553
2554         /**
2555          * Attempt to show a custom editing introduction, if supplied
2556          *
2557          * @return bool
2558          */
2559         protected function showCustomIntro() {
2560                 if ( $this->editintro ) {
2561                         $title = Title::newFromText( $this->editintro );
2562                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
2563                                 // Added using template syntax, to take <noinclude>'s into account.
2564                                 $this->context->getOutput()->addWikiTextTitleTidy(
2565                                         '<div class="mw-editintro">{{:' . $title->getFullText() . '}}</div>',
2566                                         $this->mTitle
2567                                 );
2568                                 return true;
2569                         }
2570                 }
2571                 return false;
2572         }
2573
2574         /**
2575          * Gets an editable textual representation of $content.
2576          * The textual representation can be turned by into a Content object by the
2577          * toEditContent() method.
2578          *
2579          * If $content is null or false or a string, $content is returned unchanged.
2580          *
2581          * If the given Content object is not of a type that can be edited using
2582          * the text base EditPage, an exception will be raised. Set
2583          * $this->allowNonTextContent to true to allow editing of non-textual
2584          * content.
2585          *
2586          * @param Content|null|bool|string $content
2587          * @return string The editable text form of the content.
2588          *
2589          * @throws MWException If $content is not an instance of TextContent and
2590          *   $this->allowNonTextContent is not true.
2591          */
2592         protected function toEditText( $content ) {
2593                 if ( $content === null || $content === false || is_string( $content ) ) {
2594                         return $content;
2595                 }
2596
2597                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2598                         throw new MWException( 'This content model is not supported: ' . $content->getModel() );
2599                 }
2600
2601                 return $content->serialize( $this->contentFormat );
2602         }
2603
2604         /**
2605          * Turns the given text into a Content object by unserializing it.
2606          *
2607          * If the resulting Content object is not of a type that can be edited using
2608          * the text base EditPage, an exception will be raised. Set
2609          * $this->allowNonTextContent to true to allow editing of non-textual
2610          * content.
2611          *
2612          * @param string|null|bool $text Text to unserialize
2613          * @return Content|bool|null The content object created from $text. If $text was false
2614          *   or null, false resp. null will be  returned instead.
2615          *
2616          * @throws MWException If unserializing the text results in a Content
2617          *   object that is not an instance of TextContent and
2618          *   $this->allowNonTextContent is not true.
2619          */
2620         protected function toEditContent( $text ) {
2621                 if ( $text === false || $text === null ) {
2622                         return $text;
2623                 }
2624
2625                 $content = ContentHandler::makeContent( $text, $this->getTitle(),
2626                         $this->contentModel, $this->contentFormat );
2627
2628                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2629                         throw new MWException( 'This content model is not supported: ' . $content->getModel() );
2630                 }
2631
2632                 return $content;
2633         }
2634
2635         /**
2636          * Send the edit form and related headers to OutputPage
2637          * @param callable|null $formCallback That takes an OutputPage parameter; will be called
2638          *     during form output near the top, for captchas and the like.
2639          *
2640          * The $formCallback parameter is deprecated since MediaWiki 1.25. Please
2641          * use the EditPage::showEditForm:fields hook instead.
2642          */
2643         public function showEditForm( $formCallback = null ) {
2644                 # need to parse the preview early so that we know which templates are used,
2645                 # otherwise users with "show preview after edit box" will get a blank list
2646                 # we parse this near the beginning so that setHeaders can do the title
2647                 # setting work instead of leaving it in getPreviewText
2648                 $previewOutput = '';
2649                 if ( $this->formtype == 'preview' ) {
2650                         $previewOutput = $this->getPreviewText();
2651                 }
2652
2653                 $out = $this->context->getOutput();
2654
2655                 // Avoid PHP 7.1 warning of passing $this by reference
2656                 $editPage = $this;
2657                 Hooks::run( 'EditPage::showEditForm:initial', [ &$editPage, &$out ] );
2658
2659                 $this->setHeaders();
2660
2661                 $this->addTalkPageText();
2662                 $this->addEditNotices();
2663
2664                 if ( !$this->isConflict &&
2665                         $this->section != '' &&
2666                         !$this->isSectionEditSupported() ) {
2667                         // We use $this->section to much before this and getVal('wgSection') directly in other places
2668                         // at this point we can't reset $this->section to '' to fallback to non-section editing.
2669                         // Someone is welcome to try refactoring though
2670                         $out->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2671                         return;
2672                 }
2673
2674                 $this->showHeader();
2675
2676                 $out->addHTML( $this->editFormPageTop );
2677
2678                 $user = $this->context->getUser();
2679                 if ( $user->getOption( 'previewontop' ) ) {
2680                         $this->displayPreviewArea( $previewOutput, true );
2681                 }
2682
2683                 $out->addHTML( $this->editFormTextTop );
2684
2685                 $showToolbar = true;
2686                 if ( $this->wasDeletedSinceLastEdit() ) {
2687                         if ( $this->formtype == 'save' ) {
2688                                 // Hide the toolbar and edit area, user can click preview to get it back
2689                                 // Add an confirmation checkbox and explanation.
2690                                 $showToolbar = false;
2691                         } else {
2692                                 $out->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
2693                                         'deletedwhileediting' );
2694                         }
2695                 }
2696
2697                 // @todo add EditForm plugin interface and use it here!
2698                 //       search for textarea1 and textarea2, and allow EditForm to override all uses.
2699                 $out->addHTML( Html::openElement(
2700                         'form',
2701                         [
2702                                 'class' => 'mw-editform',
2703                                 'id' => self::EDITFORM_ID,
2704                                 'name' => self::EDITFORM_ID,
2705                                 'method' => 'post',
2706                                 'action' => $this->getActionURL( $this->getContextTitle() ),
2707                                 'enctype' => 'multipart/form-data'
2708                         ]
2709                 ) );
2710
2711                 if ( is_callable( $formCallback ) ) {
2712                         wfWarn( 'The $formCallback parameter to ' . __METHOD__ . 'is deprecated' );
2713                         call_user_func_array( $formCallback, [ &$out ] );
2714                 }
2715
2716                 // Add a check for Unicode support
2717                 $out->addHTML( Html::hidden( 'wpUnicodeCheck', self::UNICODE_CHECK ) );
2718
2719                 // Add an empty field to trip up spambots
2720                 $out->addHTML(
2721                         Xml::openElement( 'div', [ 'id' => 'antispam-container', 'style' => 'display: none;' ] )
2722                         . Html::rawElement(
2723                                 'label',
2724                                 [ 'for' => 'wpAntispam' ],
2725                                 $this->context->msg( 'simpleantispam-label' )->parse()
2726                         )
2727                         . Xml::element(
2728                                 'input',
2729                                 [
2730                                         'type' => 'text',
2731                                         'name' => 'wpAntispam',
2732                                         'id' => 'wpAntispam',
2733                                         'value' => ''
2734                                 ]
2735                         )
2736                         . Xml::closeElement( 'div' )
2737                 );
2738
2739                 // Avoid PHP 7.1 warning of passing $this by reference
2740                 $editPage = $this;
2741                 Hooks::run( 'EditPage::showEditForm:fields', [ &$editPage, &$out ] );
2742
2743                 // Put these up at the top to ensure they aren't lost on early form submission
2744                 $this->showFormBeforeText();
2745
2746                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
2747                         $username = $this->lastDelete->user_name;
2748                         $comment = CommentStore::newKey( 'log_comment' )->getComment( $this->lastDelete )->text;
2749
2750                         // It is better to not parse the comment at all than to have templates expanded in the middle
2751                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
2752                         $key = $comment === ''
2753                                 ? 'confirmrecreate-noreason'
2754                                 : 'confirmrecreate';
2755                         $out->addHTML(
2756                                 '<div class="mw-confirm-recreate">' .
2757                                         $this->context->msg( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
2758                                 Xml::checkLabel( $this->context->msg( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
2759                                         [ 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' ]
2760                                 ) .
2761                                 '</div>'
2762                         );
2763                 }
2764
2765                 # When the summary is hidden, also hide them on preview/show changes
2766                 if ( $this->nosummary ) {
2767                         $out->addHTML( Html::hidden( 'nosummary', true ) );
2768                 }
2769
2770                 # If a blank edit summary was previously provided, and the appropriate
2771                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
2772                 # user being bounced back more than once in the event that a summary
2773                 # is not required.
2774                 # ####
2775                 # For a bit more sophisticated detection of blank summaries, hash the
2776                 # automatic one and pass that in the hidden field wpAutoSummary.
2777                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
2778                         $out->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
2779                 }
2780
2781                 if ( $this->undidRev ) {
2782                         $out->addHTML( Html::hidden( 'wpUndidRevision', $this->undidRev ) );
2783                 }
2784
2785                 if ( $this->selfRedirect ) {
2786                         $out->addHTML( Html::hidden( 'wpIgnoreSelfRedirect', true ) );
2787                 }
2788
2789                 if ( $this->hasPresetSummary ) {
2790                         // If a summary has been preset using &summary= we don't want to prompt for
2791                         // a different summary. Only prompt for a summary if the summary is blanked.
2792                         // (T19416)
2793                         $this->autoSumm = md5( '' );
2794                 }
2795
2796                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
2797                 $out->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
2798
2799                 $out->addHTML( Html::hidden( 'oldid', $this->oldid ) );
2800                 $out->addHTML( Html::hidden( 'parentRevId', $this->getParentRevId() ) );
2801
2802                 $out->addHTML( Html::hidden( 'format', $this->contentFormat ) );
2803                 $out->addHTML( Html::hidden( 'model', $this->contentModel ) );
2804
2805                 $out->enableOOUI();
2806
2807                 if ( $this->section == 'new' ) {
2808                         $this->showSummaryInput( true, $this->summary );
2809                         $out->addHTML( $this->getSummaryPreview( true, $this->summary ) );
2810                 }
2811
2812                 $out->addHTML( $this->editFormTextBeforeContent );
2813
2814                 if ( !$this->mTitle->isCssJsSubpage() && $showToolbar && $user->getOption( 'showtoolbar' ) ) {
2815                         $out->addHTML( self::getEditToolbar( $this->mTitle ) );
2816                 }
2817
2818                 if ( $this->blankArticle ) {
2819                         $out->addHTML( Html::hidden( 'wpIgnoreBlankArticle', true ) );
2820                 }
2821
2822                 if ( $this->isConflict ) {
2823                         // In an edit conflict bypass the overridable content form method
2824                         // and fallback to the raw wpTextbox1 since editconflicts can't be
2825                         // resolved between page source edits and custom ui edits using the
2826                         // custom edit ui.
2827                         $this->textbox2 = $this->textbox1;
2828
2829                         $content = $this->getCurrentContent();
2830                         $this->textbox1 = $this->toEditText( $content );
2831
2832                         $this->showTextbox1();
2833                 } else {
2834                         $this->showContentForm();
2835                 }
2836
2837                 $out->addHTML( $this->editFormTextAfterContent );
2838
2839                 $this->showStandardInputs();
2840
2841                 $this->showFormAfterText();
2842
2843                 $this->showTosSummary();
2844
2845                 $this->showEditTools();
2846
2847                 $out->addHTML( $this->editFormTextAfterTools . "\n" );
2848
2849                 $out->addHTML( $this->makeTemplatesOnThisPageList( $this->getTemplates() ) );
2850
2851                 $out->addHTML( Html::rawElement( 'div', [ 'class' => 'hiddencats' ],
2852                         Linker::formatHiddenCategories( $this->page->getHiddenCategories() ) ) );
2853
2854                 $out->addHTML( Html::rawElement( 'div', [ 'class' => 'limitreport' ],
2855                         self::getPreviewLimitReport( $this->mParserOutput ) ) );
2856
2857                 $out->addModules( 'mediawiki.action.edit.collapsibleFooter' );
2858
2859                 if ( $this->isConflict ) {
2860                         try {
2861                                 $this->showConflict();
2862                         } catch ( MWContentSerializationException $ex ) {
2863                                 // this can't really happen, but be nice if it does.
2864                                 $msg = $this->context->msg(
2865                                         'content-failed-to-parse',
2866                                         $this->contentModel,
2867                                         $this->contentFormat,
2868                                         $ex->getMessage()
2869                                 );
2870                                 $out->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
2871                         }
2872                 }
2873
2874                 // Set a hidden field so JS knows what edit form mode we are in
2875                 if ( $this->isConflict ) {
2876                         $mode = 'conflict';
2877                 } elseif ( $this->preview ) {
2878                         $mode = 'preview';
2879                 } elseif ( $this->diff ) {
2880                         $mode = 'diff';
2881                 } else {
2882                         $mode = 'text';
2883                 }
2884                 $out->addHTML( Html::hidden( 'mode', $mode, [ 'id' => 'mw-edit-mode' ] ) );
2885
2886                 // Marker for detecting truncated form data.  This must be the last
2887                 // parameter sent in order to be of use, so do not move me.
2888                 $out->addHTML( Html::hidden( 'wpUltimateParam', true ) );
2889                 $out->addHTML( $this->editFormTextBottom . "\n</form>\n" );
2890
2891                 if ( !$user->getOption( 'previewontop' ) ) {
2892                         $this->displayPreviewArea( $previewOutput, false );
2893                 }
2894         }
2895
2896         /**
2897          * Wrapper around TemplatesOnThisPageFormatter to make
2898          * a "templates on this page" list.
2899          *
2900          * @param Title[] $templates
2901          * @return string HTML
2902          */
2903         public function makeTemplatesOnThisPageList( array $templates ) {
2904                 $templateListFormatter = new TemplatesOnThisPageFormatter(
2905                         $this->context, MediaWikiServices::getInstance()->getLinkRenderer()
2906                 );
2907
2908                 // preview if preview, else section if section, else false
2909                 $type = false;
2910                 if ( $this->preview ) {
2911                         $type = 'preview';
2912                 } elseif ( $this->section != '' ) {
2913                         $type = 'section';
2914                 }
2915
2916                 return Html::rawElement( 'div', [ 'class' => 'templatesUsed' ],
2917                         $templateListFormatter->format( $templates, $type )
2918                 );
2919         }
2920
2921         /**
2922          * Extract the section title from current section text, if any.
2923          *
2924          * @param string $text
2925          * @return string|bool String or false
2926          */
2927         public static function extractSectionTitle( $text ) {
2928                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
2929                 if ( !empty( $matches[2] ) ) {
2930                         global $wgParser;
2931                         return $wgParser->stripSectionName( trim( $matches[2] ) );
2932                 } else {
2933                         return false;
2934                 }
2935         }
2936
2937         protected function showHeader() {
2938                 $out = $this->context->getOutput();
2939                 $user = $this->context->getUser();
2940                 if ( $this->isConflict ) {
2941                         $this->addExplainConflictHeader( $out );
2942                         $this->editRevId = $this->page->getLatest();
2943                 } else {
2944                         if ( $this->section != '' && $this->section != 'new' ) {
2945                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2946                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 ); // FIXME: use Content object
2947                                         if ( $sectionTitle !== false ) {
2948                                                 $this->summary = "/* $sectionTitle */ ";
2949                                         }
2950                                 }
2951                         }
2952
2953                         $buttonLabel = $this->context->msg( $this->getSubmitButtonLabel() )->text();
2954
2955                         if ( $this->missingComment ) {
2956                                 $out->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2957                         }
2958
2959                         if ( $this->missingSummary && $this->section != 'new' ) {
2960                                 $out->wrapWikiMsg(
2961                                         "<div id='mw-missingsummary'>\n$1\n</div>",
2962                                         [ 'missingsummary', $buttonLabel ]
2963                                 );
2964                         }
2965
2966                         if ( $this->missingSummary && $this->section == 'new' ) {
2967                                 $out->wrapWikiMsg(
2968                                         "<div id='mw-missingcommentheader'>\n$1\n</div>",
2969                                         [ 'missingcommentheader', $buttonLabel ]
2970                                 );
2971                         }
2972
2973                         if ( $this->blankArticle ) {
2974                                 $out->wrapWikiMsg(
2975                                         "<div id='mw-blankarticle'>\n$1\n</div>",
2976                                         [ 'blankarticle', $buttonLabel ]
2977                                 );
2978                         }
2979
2980                         if ( $this->selfRedirect ) {
2981                                 $out->wrapWikiMsg(
2982                                         "<div id='mw-selfredirect'>\n$1\n</div>",
2983                                         [ 'selfredirect', $buttonLabel ]
2984                                 );
2985                         }
2986
2987                         if ( $this->hookError !== '' ) {
2988                                 $out->addWikiText( $this->hookError );
2989                         }
2990
2991                         if ( $this->section != 'new' ) {
2992                                 $revision = $this->mArticle->getRevisionFetched();
2993                                 if ( $revision ) {
2994                                         // Let sysop know that this will make private content public if saved
2995
2996                                         if ( !$revision->userCan( Revision::DELETED_TEXT, $user ) ) {
2997                                                 $out->wrapWikiMsg(
2998                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
2999                                                         'rev-deleted-text-permission'
3000                                                 );
3001                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
3002                                                 $out->wrapWikiMsg(
3003                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
3004                                                         'rev-deleted-text-view'
3005                                                 );
3006                                         }
3007
3008                                         if ( !$revision->isCurrent() ) {
3009                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
3010                                                 $out->addWikiMsg( 'editingold' );
3011                                                 $this->isOldRev = true;
3012                                         }
3013                                 } elseif ( $this->mTitle->exists() ) {
3014                                         // Something went wrong
3015
3016                                         $out->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
3017                                                 [ 'missing-revision', $this->oldid ] );
3018                                 }
3019                         }
3020                 }
3021
3022                 if ( wfReadOnly() ) {
3023                         $out->wrapWikiMsg(
3024                                 "<div id=\"mw-read-only-warning\">\n$1\n</div>",
3025                                 [ 'readonlywarning', wfReadOnlyReason() ]
3026                         );
3027                 } elseif ( $user->isAnon() ) {
3028                         if ( $this->formtype != 'preview' ) {
3029                                 $out->wrapWikiMsg(
3030                                         "<div id='mw-anon-edit-warning' class='warningbox'>\n$1\n</div>",
3031                                         [ 'anoneditwarning',
3032                                                 // Log-in link
3033                                                 SpecialPage::getTitleFor( 'Userlogin' )->getFullURL( [
3034                                                         'returnto' => $this->getTitle()->getPrefixedDBkey()
3035                                                 ] ),
3036                                                 // Sign-up link
3037                                                 SpecialPage::getTitleFor( 'CreateAccount' )->getFullURL( [
3038                                                         'returnto' => $this->getTitle()->getPrefixedDBkey()
3039                                                 ] )
3040                                         ]
3041                                 );
3042                         } else {
3043                                 $out->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\" class=\"warningbox\">\n$1</div>",
3044                                         'anonpreviewwarning'
3045                                 );
3046                         }
3047                 } else {
3048                         if ( $this->mTitle->isCssJsSubpage() ) {
3049                                 # Check the skin exists
3050                                 if ( $this->isWrongCaseCssJsPage() ) {
3051                                         $out->wrapWikiMsg(
3052                                                 "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>",
3053                                                 [ 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ]
3054                                         );
3055                                 }
3056                                 if ( $this->getTitle()->isSubpageOf( $user->getUserPage() ) ) {
3057                                         $isCssSubpage = $this->mTitle->isCssSubpage();
3058                                         $out->wrapWikiMsg( '<div class="mw-usercssjspublic">$1</div>',
3059                                                 $isCssSubpage ? 'usercssispublic' : 'userjsispublic'
3060                                         );
3061                                         if ( $this->formtype !== 'preview' ) {
3062                                                 $config = $this->context->getConfig();
3063                                                 if ( $isCssSubpage && $config->get( 'AllowUserCss' ) ) {
3064                                                         $out->wrapWikiMsg(
3065                                                                 "<div id='mw-usercssyoucanpreview'>\n$1\n</div>",
3066                                                                 [ 'usercssyoucanpreview' ]
3067                                                         );
3068                                                 }
3069
3070                                                 if ( $this->mTitle->isJsSubpage() && $config->get( 'AllowUserJs' ) ) {
3071                                                         $out->wrapWikiMsg(
3072                                                                 "<div id='mw-userjsyoucanpreview'>\n$1\n</div>",
3073                                                                 [ 'userjsyoucanpreview' ]
3074                                                         );
3075                                                 }
3076                                         }
3077                                 }
3078                         }
3079                 }
3080
3081                 $this->addPageProtectionWarningHeaders();
3082
3083                 $this->addLongPageWarningHeader();
3084
3085                 # Add header copyright warning
3086                 $this->showHeaderCopyrightWarning();
3087         }
3088
3089         /**
3090          * Helper function for summary input functions, which returns the neccessary
3091          * attributes for the input.
3092          *
3093          * @param array|null $inputAttrs Array of attrs to use on the input
3094          * @return array
3095          */
3096         private function getSummaryInputAttributes( array $inputAttrs = null ) {
3097                 // Note: the maxlength is overridden in JS to 255 and to make it use UTF-8 bytes, not characters.
3098                 return ( is_array( $inputAttrs ) ? $inputAttrs : [] ) + [
3099                         'id' => 'wpSummary',
3100                         'name' => 'wpSummary',
3101                         'maxlength' => '200',
3102                         'tabindex' => 1,
3103                         'size' => 60,
3104                         'spellcheck' => 'true',
3105                 ];
3106         }
3107
3108         /**
3109          * Standard summary input and label (wgSummary), abstracted so EditPage
3110          * subclasses may reorganize the form.
3111          * Note that you do not need to worry about the label's for=, it will be
3112          * inferred by the id given to the input. You can remove them both by
3113          * passing [ 'id' => false ] to $userInputAttrs.
3114          *
3115          * @deprecated since 1.30 Use getSummaryInputWidget() instead
3116          * @param string $summary The value of the summary input
3117          * @param string $labelText The html to place inside the label
3118          * @param array $inputAttrs Array of attrs to use on the input
3119          * @param array $spanLabelAttrs Array of attrs to use on the span inside the label
3120          * @return array An array in the format [ $label, $input ]
3121          */
3122         public function getSummaryInput( $summary = "", $labelText = null,
3123                 $inputAttrs = null, $spanLabelAttrs = null
3124         ) {
3125                 wfDeprecated( __METHOD__, '1.30' );
3126                 $inputAttrs = $this->getSummaryInputAttributes( $inputAttrs );
3127                 $inputAttrs += Linker::tooltipAndAccesskeyAttribs( 'summary' );
3128
3129                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : [] ) + [
3130                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
3131                         'id' => "wpSummaryLabel"
3132                 ];
3133
3134                 $label = null;
3135                 if ( $labelText ) {
3136                         $label = Xml::tags(
3137                                 'label',
3138                                 $inputAttrs['id'] ? [ 'for' => $inputAttrs['id'] ] : null,
3139                                 $labelText
3140                         );
3141                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
3142                 }
3143
3144                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
3145
3146                 return [ $label, $input ];
3147         }
3148
3149         /**
3150          * Builds a standard summary input with a label.
3151          *
3152          * @deprecated since 1.30 Use getSummaryInputWidget() instead
3153          * @param string $summary The value of the summary input
3154          * @param string $labelText The html to place inside the label
3155          * @param array $inputAttrs Array of attrs to use on the input
3156          *
3157          * @return OOUI\FieldLayout OOUI FieldLayout with Label and Input
3158          */
3159         function getSummaryInputOOUI( $summary = "", $labelText = null, $inputAttrs = null ) {
3160                 wfDeprecated( __METHOD__, '1.30' );
3161                 $this->getSummaryInputWidget( $summary, $labelText, $inputAttrs );
3162         }
3163
3164         /**
3165          * Builds a standard summary input with a label.
3166          *
3167          * @param string $summary The value of the summary input
3168          * @param string $labelText The html to place inside the label
3169          * @param array $inputAttrs Array of attrs to use on the input
3170          *
3171          * @return OOUI\FieldLayout OOUI FieldLayout with Label and Input
3172          */
3173         function getSummaryInputWidget( $summary = "", $labelText = null, $inputAttrs = null ) {
3174                 $inputAttrs = OOUI\Element::configFromHtmlAttributes(
3175                         $this->getSummaryInputAttributes( $inputAttrs )
3176                 );
3177                 $inputAttrs += [
3178                         'title' => Linker::titleAttrib( 'summary' ),
3179                         'accessKey' => Linker::accesskey( 'summary' ),
3180                 ];
3181
3182                 // For compatibility with old scripts and extensions, we want the legacy 'id' on the `<input>`
3183                 $inputAttrs['inputId'] = $inputAttrs['id'];
3184                 $inputAttrs['id'] = 'wpSummaryWidget';
3185
3186                 return new OOUI\FieldLayout(
3187                         new OOUI\TextInputWidget( [
3188                                 'value' => $summary,
3189                                 'infusable' => true,
3190                         ] + $inputAttrs ),
3191                         [
3192                                 'label' => new OOUI\HtmlSnippet( $labelText ),
3193                                 'align' => 'top',
3194                                 'id' => 'wpSummaryLabel',
3195                                 'classes' => [ $this->missingSummary ? 'mw-summarymissed' : 'mw-summary' ],
3196                         ]
3197                 );
3198         }
3199
3200         /**
3201          * @param bool $isSubjectPreview True if this is the section subject/title
3202          *   up top, or false if this is the comment summary
3203          *   down below the textarea
3204          * @param string $summary The text of the summary to display
3205          */
3206         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
3207                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
3208                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
3209                 if ( $isSubjectPreview ) {
3210                         if ( $this->nosummary ) {
3211                                 return;
3212                         }
3213                 } else {
3214                         if ( !$this->mShowSummaryField ) {
3215                                 return;
3216                         }
3217                 }
3218
3219                 $labelText = $this->context->msg( $isSubjectPreview ? 'subject' : 'summary' )->parse();
3220                 $this->context->getOutput()->addHTML( $this->getSummaryInputWidget(
3221                                 $summary,
3222                                 $labelText,
3223                                 [ 'class' => $summaryClass ]
3224                         ) );
3225         }
3226
3227         /**
3228          * @param bool $isSubjectPreview True if this is the section subject/title
3229          *   up top, or false if this is the comment summary
3230          *   down below the textarea
3231          * @param string $summary The text of the summary to display
3232          * @return string
3233          */
3234         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
3235                 // avoid spaces in preview, gets always trimmed on save
3236                 $summary = trim( $summary );
3237                 if ( !$summary || ( !$this->preview && !$this->diff ) ) {
3238                         return "";
3239                 }
3240
3241                 global $wgParser;
3242
3243                 if ( $isSubjectPreview ) {
3244                         $summary = $this->context->msg( 'newsectionsummary' )
3245                                 ->rawParams( $wgParser->stripSectionName( $summary ) )
3246                                 ->inContentLanguage()->text();
3247                 }
3248
3249                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
3250
3251                 $summary = $this->context->msg( $message )->parse()
3252                         . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
3253                 return Xml::tags( 'div', [ 'class' => 'mw-summary-preview' ], $summary );
3254         }
3255
3256         protected function showFormBeforeText() {
3257                 $out = $this->context->getOutput();
3258                 $out->addHTML( Html::hidden( 'wpSection', $this->section ) );
3259                 $out->addHTML( Html::hidden( 'wpStarttime', $this->starttime ) );
3260                 $out->addHTML( Html::hidden( 'wpEdittime', $this->edittime ) );
3261                 $out->addHTML( Html::hidden( 'editRevId', $this->editRevId ) );
3262                 $out->addHTML( Html::hidden( 'wpScrolltop', $this->scrolltop, [ 'id' => 'wpScrolltop' ] ) );
3263         }
3264
3265         protected function showFormAfterText() {
3266                 /**
3267                  * To make it harder for someone to slip a user a page
3268                  * which submits an edit form to the wiki without their
3269                  * knowledge, a random token is associated with the login
3270                  * session. If it's not passed back with the submission,
3271                  * we won't save the page, or render user JavaScript and
3272                  * CSS previews.
3273                  *
3274                  * For anon editors, who may not have a session, we just
3275                  * include the constant suffix to prevent editing from
3276                  * broken text-mangling proxies.
3277                  */
3278                 $this->context->getOutput()->addHTML(
3279                         "\n" .
3280                         Html::hidden( "wpEditToken", $this->context->getUser()->getEditToken() ) .
3281                         "\n"
3282                 );
3283         }
3284
3285         /**
3286          * Subpage overridable method for printing the form for page content editing
3287          * By default this simply outputs wpTextbox1
3288          * Subclasses can override this to provide a custom UI for editing;
3289          * be it a form, or simply wpTextbox1 with a modified content that will be
3290          * reverse modified when extracted from the post data.
3291          * Note that this is basically the inverse for importContentFormData
3292          */
3293         protected function showContentForm() {
3294                 $this->showTextbox1();
3295         }
3296
3297         /**
3298          * Method to output wpTextbox1
3299          * The $textoverride method can be used by subclasses overriding showContentForm
3300          * to pass back to this method.
3301          *
3302          * @param array $customAttribs Array of html attributes to use in the textarea
3303          * @param string $textoverride Optional text to override $this->textarea1 with
3304          */
3305         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
3306                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
3307                         $attribs = [ 'style' => 'display:none;' ];
3308                 } else {
3309                         $classes = []; // Textarea CSS
3310                         if ( $this->mTitle->isProtected( 'edit' ) &&
3311                                 MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== [ '' ]
3312                         ) {
3313                                 # Is the title semi-protected?
3314                                 if ( $this->mTitle->isSemiProtected() ) {
3315                                         $classes[] = 'mw-textarea-sprotected';
3316                                 } else {
3317                                         # Then it must be protected based on static groups (regular)
3318                                         $classes[] = 'mw-textarea-protected';
3319                                 }
3320                                 # Is the title cascade-protected?
3321                                 if ( $this->mTitle->isCascadeProtected() ) {
3322                                         $classes[] = 'mw-textarea-cprotected';
3323                                 }
3324                         }
3325                         # Is an old revision being edited?
3326                         if ( $this->isOldRev ) {
3327                                 $classes[] = 'mw-textarea-oldrev';
3328                         }
3329
3330                         $attribs = [ 'tabindex' => 1 ];
3331
3332                         if ( is_array( $customAttribs ) ) {
3333                                 $attribs += $customAttribs;
3334                         }
3335
3336                         if ( count( $classes ) ) {
3337                                 if ( isset( $attribs['class'] ) ) {
3338                                         $classes[] = $attribs['class'];
3339                                 }
3340                                 $attribs['class'] = implode( ' ', $classes );
3341                         }
3342                 }
3343
3344                 $this->showTextbox(
3345                         $textoverride !== null ? $textoverride : $this->textbox1,
3346                         'wpTextbox1',
3347                         $attribs
3348                 );
3349         }
3350
3351         protected function showTextbox2() {
3352                 $this->showTextbox( $this->textbox2, 'wpTextbox2', [ 'tabindex' => 6, 'readonly' ] );
3353         }
3354
3355         protected function showTextbox( $text, $name, $customAttribs = [] ) {
3356                 $wikitext = $this->addNewLineAtEnd( $text );
3357
3358                 $attribs = $this->buildTextboxAttribs( $name, $customAttribs, $this->context->getUser() );
3359
3360                 $this->context->getOutput()->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
3361         }
3362
3363         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
3364                 $classes = [];
3365                 if ( $isOnTop ) {
3366                         $classes[] = 'ontop';
3367                 }
3368
3369                 $attribs = [ 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) ];
3370
3371                 if ( $this->formtype != 'preview' ) {
3372                         $attribs['style'] = 'display: none;';
3373                 }
3374
3375                 $out = $this->context->getOutput();
3376                 $out->addHTML( Xml::openElement( 'div', $attribs ) );
3377
3378                 if ( $this->formtype == 'preview' ) {
3379                         $this->showPreview( $previewOutput );
3380                 } else {
3381                         // Empty content container for LivePreview
3382                         $pageViewLang = $this->mTitle->getPageViewLanguage();
3383                         $attribs = [ 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3384                                 'class' => 'mw-content-' . $pageViewLang->getDir() ];
3385                         $out->addHTML( Html::rawElement( 'div', $attribs ) );
3386                 }
3387
3388                 $out->addHTML( '</div>' );
3389
3390                 if ( $this->formtype == 'diff' ) {
3391                         try {
3392                                 $this->showDiff();
3393                         } catch ( MWContentSerializationException $ex ) {
3394                                 $msg = $this->context->msg(
3395                                         'content-failed-to-parse',
3396                                         $this->contentModel,
3397                                         $this->contentFormat,
3398                                         $ex->getMessage()
3399                                 );
3400                                 $out->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
3401                         }
3402                 }
3403         }
3404
3405         /**
3406          * Append preview output to OutputPage.
3407          * Includes category rendering if this is a category page.
3408          *
3409          * @param string $text The HTML to be output for the preview.
3410          */
3411         protected function showPreview( $text ) {
3412                 if ( $this->mArticle instanceof CategoryPage ) {
3413                         $this->mArticle->openShowCategory();
3414                 }
3415                 # This hook seems slightly odd here, but makes things more
3416                 # consistent for extensions.
3417                 $out = $this->context->getOutput();
3418                 Hooks::run( 'OutputPageBeforeHTML', [ &$out, &$text ] );
3419                 $out->addHTML( $text );
3420                 if ( $this->mArticle instanceof CategoryPage ) {
3421                         $this->mArticle->closeShowCategory();
3422                 }
3423         }
3424
3425         /**
3426          * Get a diff between the current contents of the edit box and the
3427          * version of the page we're editing from.
3428          *
3429          * If this is a section edit, we'll replace the section as for final
3430          * save and then make a comparison.
3431          */
3432         public function showDiff() {
3433                 global $wgContLang;
3434
3435                 $oldtitlemsg = 'currentrev';
3436                 # if message does not exist, show diff against the preloaded default
3437                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
3438                         $oldtext = $this->mTitle->getDefaultMessageText();
3439                         if ( $oldtext !== false ) {
3440                                 $oldtitlemsg = 'defaultmessagetext';
3441                                 $oldContent = $this->toEditContent( $oldtext );
3442                         } else {
3443                                 $oldContent = null;
3444                         }
3445                 } else {
3446                         $oldContent = $this->getCurrentContent();
3447                 }
3448
3449                 $textboxContent = $this->toEditContent( $this->textbox1 );
3450                 if ( $this->editRevId !== null ) {
3451                         $newContent = $this->page->replaceSectionAtRev(
3452                                 $this->section, $textboxContent, $this->summary, $this->editRevId
3453                         );
3454                 } else {
3455                         $newContent = $this->page->replaceSectionContent(
3456                                 $this->section, $textboxContent, $this->summary, $this->edittime
3457                         );
3458                 }
3459
3460                 if ( $newContent ) {
3461                         Hooks::run( 'EditPageGetDiffContent', [ $this, &$newContent ] );
3462
3463                         $user = $this->context->getUser();
3464                         $popts = ParserOptions::newFromUserAndLang( $user, $wgContLang );
3465                         $newContent = $newContent->preSaveTransform( $this->mTitle, $user, $popts );
3466                 }
3467
3468                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
3469                         $oldtitle = $this->context->msg( $oldtitlemsg )->parse();
3470                         $newtitle = $this->context->msg( 'yourtext' )->parse();
3471
3472                         if ( !$oldContent ) {
3473                                 $oldContent = $newContent->getContentHandler()->makeEmptyContent();
3474                         }
3475
3476                         if ( !$newContent ) {
3477                                 $newContent = $oldContent->getContentHandler()->makeEmptyContent();
3478                         }
3479
3480                         $de = $oldContent->getContentHandler()->createDifferenceEngine( $this->context );
3481                         $de->setContent( $oldContent, $newContent );
3482
3483                         $difftext = $de->getDiff( $oldtitle, $newtitle );
3484                         $de->showDiffStyle();
3485                 } else {
3486                         $difftext = '';
3487                 }
3488
3489                 $this->context->getOutput()->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
3490         }
3491
3492         /**
3493          * Show the header copyright warning.
3494          */
3495         protected function showHeaderCopyrightWarning() {
3496                 $msg = 'editpage-head-copy-warn';
3497                 if ( !$this->context->msg( $msg )->isDisabled() ) {
3498                         $this->context->getOutput()->wrapWikiMsg( "<div class='editpage-head-copywarn'>\n$1\n</div>",
3499                                 'editpage-head-copy-warn' );
3500                 }
3501         }
3502
3503         /**
3504          * Give a chance for site and per-namespace customizations of
3505          * terms of service summary link that might exist separately
3506          * from the copyright notice.
3507          *
3508          * This will display between the save button and the edit tools,
3509          * so should remain short!
3510          */
3511         protected function showTosSummary() {
3512                 $msg = 'editpage-tos-summary';
3513                 Hooks::run( 'EditPageTosSummary', [ $this->mTitle, &$msg ] );
3514                 if ( !$this->context->msg( $msg )->isDisabled() ) {
3515                         $out = $this->context->getOutput();
3516                         $out->addHTML( '<div class="mw-tos-summary">' );
3517                         $out->addWikiMsg( $msg );
3518                         $out->addHTML( '</div>' );
3519                 }
3520         }
3521
3522         /**
3523          * Inserts optional text shown below edit and upload forms. Can be used to offer special
3524          * characters not present on most keyboards for copying/pasting.
3525          */
3526         protected function showEditTools() {
3527                 $this->context->getOutput()->addHTML( '<div class="mw-editTools">' .
3528                         $this->context->msg( 'edittools' )->inContentLanguage()->parse() .
3529                         '</div>' );
3530         }
3531
3532         /**
3533          * Get the copyright warning
3534          *
3535          * Renamed to getCopyrightWarning(), old name kept around for backwards compatibility
3536          * @return string
3537          */
3538         protected function getCopywarn() {
3539                 return self::getCopyrightWarning( $this->mTitle );
3540         }
3541
3542         /**
3543          * Get the copyright warning, by default returns wikitext
3544          *
3545          * @param Title $title
3546          * @param string $format Output format, valid values are any function of a Message object
3547          * @param Language|string|null $langcode Language code or Language object.
3548          * @return string
3549          */
3550         public static function getCopyrightWarning( $title, $format = 'plain', $langcode = null ) {
3551                 global $wgRightsText;
3552                 if ( $wgRightsText ) {
3553                         $copywarnMsg = [ 'copyrightwarning',
3554                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]',
3555                                 $wgRightsText ];
3556                 } else {
3557                         $copywarnMsg = [ 'copyrightwarning2',
3558                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]' ];
3559                 }
3560                 // Allow for site and per-namespace customization of contribution/copyright notice.
3561                 Hooks::run( 'EditPageCopyrightWarning', [ $title, &$copywarnMsg ] );
3562
3563                 $msg = call_user_func_array( 'wfMessage', $copywarnMsg )->title( $title );
3564                 if ( $langcode ) {
3565                         $msg->inLanguage( $langcode );
3566                 }
3567                 return "<div id=\"editpage-copywarn\">\n" .
3568                         $msg->$format() . "\n</div>";
3569         }
3570
3571         /**
3572          * Get the Limit report for page previews
3573          *
3574          * @since 1.22
3575          * @param ParserOutput $output ParserOutput object from the parse
3576          * @return string HTML
3577          */
3578         public static function getPreviewLimitReport( $output ) {
3579                 if ( !$output || !$output->getLimitReportData() ) {
3580                         return '';
3581                 }
3582
3583                 $limitReport = Html::rawElement( 'div', [ 'class' => 'mw-limitReportExplanation' ],
3584                         wfMessage( 'limitreport-title' )->parseAsBlock()
3585                 );
3586
3587                 // Show/hide animation doesn't work correctly on a table, so wrap it in a div.
3588                 $limitReport .= Html::openElement( 'div', [ 'class' => 'preview-limit-report-wrapper' ] );
3589
3590                 $limitReport .= Html::openElement( 'table', [
3591                         'class' => 'preview-limit-report wikitable'
3592                 ] ) .
3593                         Html::openElement( 'tbody' );
3594
3595                 foreach ( $output->getLimitReportData() as $key => $value ) {
3596                         if ( Hooks::run( 'ParserLimitReportFormat',
3597                                 [ $key, &$value, &$limitReport, true, true ]
3598                         ) ) {
3599                                 $keyMsg = wfMessage( $key );
3600                                 $valueMsg = wfMessage( [ "$key-value-html", "$key-value" ] );
3601                                 if ( !$valueMsg->exists() ) {
3602                                         $valueMsg = new RawMessage( '$1' );
3603                                 }
3604                                 if ( !$keyMsg->isDisabled() && !$valueMsg->isDisabled() ) {
3605                                         $limitReport .= Html::openElement( 'tr' ) .
3606                                                 Html::rawElement( 'th', null, $keyMsg->parse() ) .
3607                                                 Html::rawElement( 'td', null, $valueMsg->params( $value )->parse() ) .
3608                                                 Html::closeElement( 'tr' );
3609                                 }
3610                         }
3611                 }
3612
3613                 $limitReport .= Html::closeElement( 'tbody' ) .
3614                         Html::closeElement( 'table' ) .
3615                         Html::closeElement( 'div' );
3616
3617                 return $limitReport;
3618         }
3619
3620         protected function showStandardInputs( &$tabindex = 2 ) {
3621                 $out = $this->context->getOutput();
3622                 $out->addHTML( "<div class='editOptions'>\n" );
3623
3624                 if ( $this->section != 'new' ) {
3625                         $this->showSummaryInput( false, $this->summary );
3626                         $out->addHTML( $this->getSummaryPreview( false, $this->summary ) );
3627                 }
3628
3629                 $checkboxes = $this->getCheckboxesWidget(
3630                         $tabindex,
3631                         [ 'minor' => $this->minoredit, 'watch' => $this->watchthis ]
3632                 );
3633                 $checkboxesHTML = new OOUI\HorizontalLayout( [ 'items' => $checkboxes ] );
3634
3635                 $out->addHTML( "<div class='editCheckboxes'>" . $checkboxesHTML . "</div>\n" );
3636
3637                 // Show copyright warning.
3638                 $out->addWikiText( $this->getCopywarn() );
3639                 $out->addHTML( $this->editFormTextAfterWarn );
3640
3641                 $out->addHTML( "<div class='editButtons'>\n" );
3642                 $out->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
3643
3644                 $cancel = $this->getCancelLink();
3645                 if ( $cancel !== '' ) {
3646                         $cancel .= Html::element( 'span',
3647                                 [ 'class' => 'mw-editButtons-pipe-separator' ],
3648                                 $this->context->msg( 'pipe-separator' )->text() );
3649                 }
3650
3651                 $message = $this->context->msg( 'edithelppage' )->inContentLanguage()->text();
3652                 $edithelpurl = Skin::makeInternalOrExternalUrl( $message );
3653                 $edithelp =
3654                         Html::linkButton(
3655                                 $this->context->msg( 'edithelp' )->text(),
3656                                 [ 'target' => 'helpwindow', 'href' => $edithelpurl ],
3657                                 [ 'mw-ui-quiet' ]
3658                         ) .
3659                         $this->context->msg( 'word-separator' )->escaped() .
3660                         $this->context->msg( 'newwindow' )->parse();
3661
3662                 $out->addHTML( "        <span class='cancelLink'>{$cancel}</span>\n" );
3663                 $out->addHTML( "        <span class='editHelp'>{$edithelp}</span>\n" );
3664                 $out->addHTML( "</div><!-- editButtons -->\n" );
3665
3666                 Hooks::run( 'EditPage::showStandardInputs:options', [ $this, $out, &$tabindex ] );
3667
3668                 $out->addHTML( "</div><!-- editOptions -->\n" );
3669         }
3670
3671         /**
3672          * Show an edit conflict. textbox1 is already shown in showEditForm().
3673          * If you want to use another entry point to this function, be careful.
3674          */
3675         protected function showConflict() {
3676                 $out = $this->context->getOutput();
3677                 // Avoid PHP 7.1 warning of passing $this by reference
3678                 $editPage = $this;
3679                 if ( Hooks::run( 'EditPageBeforeConflictDiff', [ &$editPage, &$out ] ) ) {
3680                         $this->incrementConflictStats();
3681
3682                         $out->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3683
3684                         $content1 = $this->toEditContent( $this->textbox1 );
3685                         $content2 = $this->toEditContent( $this->textbox2 );
3686
3687                         $handler = ContentHandler::getForModelID( $this->contentModel );
3688                         $de = $handler->createDifferenceEngine( $this->context );
3689                         $de->setContent( $content2, $content1 );
3690                         $de->showDiff(
3691                                 $this->context->msg( 'yourtext' )->parse(),
3692                                 $this->context->msg( 'storedversion' )->text()
3693                         );
3694
3695                         $out->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3696                         $this->showTextbox2();
3697                 }
3698         }
3699
3700         protected function incrementConflictStats() {
3701                 $stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
3702                 $stats->increment( 'edit.failures.conflict' );
3703                 // Only include 'standard' namespaces to avoid creating unknown numbers of statsd metrics
3704                 if (
3705                         $this->mTitle->getNamespace() >= NS_MAIN &&
3706                         $this->mTitle->getNamespace() <= NS_CATEGORY_TALK
3707                 ) {
3708                         $stats->increment( 'edit.failures.conflict.byNamespaceId.' . $this->mTitle->getNamespace() );
3709                 }
3710         }
3711
3712         /**
3713          * @return string
3714          */
3715         public function getCancelLink() {
3716                 $cancelParams = [];
3717                 if ( !$this->isConflict && $this->oldid > 0 ) {
3718                         $cancelParams['oldid'] = $this->oldid;
3719                 } elseif ( $this->getContextTitle()->isRedirect() ) {
3720                         $cancelParams['redirect'] = 'no';
3721                 }
3722
3723                 return new OOUI\ButtonWidget( [
3724                         'id' => 'mw-editform-cancel',
3725                         'href' => $this->getContextTitle()->getLinkUrl( $cancelParams ),
3726                         'label' => new OOUI\HtmlSnippet( $this->context->msg( 'cancel' )->parse() ),
3727                         'framed' => false,
3728                         'infusable' => true,
3729                         'flags' => 'destructive',
3730                 ] );
3731         }
3732
3733         /**
3734          * Returns the URL to use in the form's action attribute.
3735          * This is used by EditPage subclasses when simply customizing the action
3736          * variable in the constructor is not enough. This can be used when the
3737          * EditPage lives inside of a Special page rather than a custom page action.
3738          *
3739          * @param Title $title Title object for which is being edited (where we go to for &action= links)
3740          * @return string
3741          */
3742         protected function getActionURL( Title $title ) {
3743                 return $title->getLocalURL( [ 'action' => $this->action ] );
3744         }
3745
3746         /**
3747          * Check if a page was deleted while the user was editing it, before submit.
3748          * Note that we rely on the logging table, which hasn't been always there,
3749          * but that doesn't matter, because this only applies to brand new
3750          * deletes.
3751          * @return bool
3752          */
3753         protected function wasDeletedSinceLastEdit() {
3754                 if ( $this->deletedSinceEdit !== null ) {
3755                         return $this->deletedSinceEdit;
3756                 }
3757
3758                 $this->deletedSinceEdit = false;
3759
3760                 if ( !$this->mTitle->exists() && $this->mTitle->isDeletedQuick() ) {
3761                         $this->lastDelete = $this->getLastDelete();
3762                         if ( $this->lastDelete ) {
3763                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
3764                                 if ( $deleteTime > $this->starttime ) {
3765                                         $this->deletedSinceEdit = true;
3766                                 }
3767                         }
3768                 }
3769
3770                 return $this->deletedSinceEdit;
3771         }
3772
3773         /**
3774          * @return bool|stdClass
3775          */
3776         protected function getLastDelete() {
3777                 $dbr = wfGetDB( DB_REPLICA );
3778                 $commentQuery = CommentStore::newKey( 'log_comment' )->getJoin();
3779                 $data = $dbr->selectRow(
3780                         [ 'logging', 'user' ] + $commentQuery['tables'],
3781                         [
3782                                 'log_type',
3783                                 'log_action',
3784                                 'log_timestamp',
3785                                 'log_user',
3786                                 'log_namespace',
3787                                 'log_title',
3788                                 'log_params',
3789                                 'log_deleted',
3790                                 'user_name'
3791                         ] + $commentQuery['fields'], [
3792                                 'log_namespace' => $this->mTitle->getNamespace(),
3793                                 'log_title' => $this->mTitle->getDBkey(),
3794                                 'log_type' => 'delete',
3795                                 'log_action' => 'delete',
3796                                 'user_id=log_user'
3797                         ],
3798                         __METHOD__,
3799                         [ 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ],
3800                         [
3801                                 'user' => [ 'JOIN', 'user_id=log_user' ],
3802                         ] + $commentQuery['joins']
3803                 );
3804                 // Quick paranoid permission checks...
3805                 if ( is_object( $data ) ) {
3806                         if ( $data->log_deleted & LogPage::DELETED_USER ) {
3807                                 $data->user_name = $this->context->msg( 'rev-deleted-user' )->escaped();
3808                         }
3809
3810                         if ( $data->log_deleted & LogPage::DELETED_COMMENT ) {
3811                                 $data->log_comment_text = $this->context->msg( 'rev-deleted-comment' )->escaped();
3812                                 $data->log_comment_data = null;
3813                         }
3814                 }
3815
3816                 return $data;
3817         }
3818
3819         /**
3820          * Get the rendered text for previewing.
3821          * @throws MWException
3822          * @return string
3823          */
3824         public function getPreviewText() {
3825                 $out = $this->context->getOutput();
3826                 $config = $this->context->getConfig();
3827
3828                 if ( $config->get( 'RawHtml' ) && !$this->mTokenOk ) {
3829                         // Could be an offsite preview attempt. This is very unsafe if
3830                         // HTML is enabled, as it could be an attack.
3831                         $parsedNote = '';
3832                         if ( $this->textbox1 !== '' ) {
3833                                 // Do not put big scary notice, if previewing the empty
3834                                 // string, which happens when you initially edit
3835                                 // a category page, due to automatic preview-on-open.
3836                                 $parsedNote = $out->parse( "<div class='previewnote'>" .
3837                                         $this->context->msg( 'session_fail_preview_html' )->text() . "</div>",
3838                                         true, /* interface */true );
3839                         }
3840                         $this->incrementEditFailureStats( 'session_loss' );
3841                         return $parsedNote;
3842                 }
3843
3844                 $note = '';
3845
3846                 try {
3847                         $content = $this->toEditContent( $this->textbox1 );
3848
3849                         $previewHTML = '';
3850                         if ( !Hooks::run(
3851                                 'AlternateEditPreview',
3852                                 [ $this, &$content, &$previewHTML, &$this->mParserOutput ] )
3853                         ) {
3854                                 return $previewHTML;
3855                         }
3856
3857                         # provide a anchor link to the editform
3858                         $continueEditing = '<span class="mw-continue-editing">' .
3859                                 '[[#' . self::EDITFORM_ID . '|' .
3860                                 $this->context->getLanguage()->getArrow() . ' ' .
3861                                 $this->context->msg( 'continue-editing' )->text() . ']]</span>';
3862                         if ( $this->mTriedSave && !$this->mTokenOk ) {
3863                                 if ( $this->mTokenOkExceptSuffix ) {
3864                                         $note = $this->context->msg( 'token_suffix_mismatch' )->plain();
3865                                         $this->incrementEditFailureStats( 'bad_token' );
3866                                 } else {
3867                                         $note = $this->context->msg( 'session_fail_preview' )->plain();
3868                                         $this->incrementEditFailureStats( 'session_loss' );
3869                                 }
3870                         } elseif ( $this->incompleteForm ) {
3871                                 $note = $this->context->msg( 'edit_form_incomplete' )->plain();
3872                                 if ( $this->mTriedSave ) {
3873                                         $this->incrementEditFailureStats( 'incomplete_form' );
3874                                 }
3875                         } else {
3876                                 $note = $this->context->msg( 'previewnote' )->plain() . ' ' . $continueEditing;
3877                         }
3878
3879                         # don't parse non-wikitext pages, show message about preview
3880                         if ( $this->mTitle->isCssJsSubpage() || $this->mTitle->isCssOrJsPage() ) {
3881                                 if ( $this->mTitle->isCssJsSubpage() ) {
3882                                         $level = 'user';
3883                                 } elseif ( $this->mTitle->isCssOrJsPage() ) {
3884                                         $level = 'site';
3885                                 } else {
3886                                         $level = false;
3887                                 }
3888
3889                                 if ( $content->getModel() == CONTENT_MODEL_CSS ) {
3890                                         $format = 'css';
3891                                         if ( $level === 'user' && !$config->get( 'AllowUserCss' ) ) {
3892                                                 $format = false;
3893                                         }
3894                                 } elseif ( $content->getModel() == CONTENT_MODEL_JAVASCRIPT ) {
3895                                         $format = 'js';
3896                                         if ( $level === 'user' && !$config->get( 'AllowUserJs' ) ) {
3897                                                 $format = false;
3898                                         }
3899                                 } else {
3900                                         $format = false;
3901                                 }
3902
3903                                 # Used messages to make sure grep find them:
3904                                 # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
3905                                 if ( $level && $format ) {
3906                                         $note = "<div id='mw-{$level}{$format}preview'>" .
3907                                                 $this->context->msg( "{$level}{$format}preview" )->text() .
3908                                                 ' ' . $continueEditing . "</div>";
3909                                 }
3910                         }
3911
3912                         # If we're adding a comment, we need to show the
3913                         # summary as the headline
3914                         if ( $this->section === "new" && $this->summary !== "" ) {
3915                                 $content = $content->addSectionHeader( $this->summary );
3916                         }
3917
3918                         $hook_args = [ $this, &$content ];
3919                         Hooks::run( 'EditPageGetPreviewContent', $hook_args );
3920
3921                         $parserResult = $this->doPreviewParse( $content );
3922                         $parserOutput = $parserResult['parserOutput'];
3923                         $previewHTML = $parserResult['html'];
3924                         $this->mParserOutput = $parserOutput;
3925                         $out->addParserOutputMetadata( $parserOutput );
3926
3927                         if ( count( $parserOutput->getWarnings() ) ) {
3928                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
3929                         }
3930
3931                 } catch ( MWContentSerializationException $ex ) {
3932                         $m = $this->context->msg(
3933                                 'content-failed-to-parse',
3934                                 $this->contentModel,
3935                                 $this->contentFormat,
3936                                 $ex->getMessage()
3937                         );
3938                         $note .= "\n\n" . $m->parse();
3939                         $previewHTML = '';
3940                 }
3941
3942                 if ( $this->isConflict ) {
3943                         $conflict = '<h2 id="mw-previewconflict">'
3944                                 . $this->context->msg( 'previewconflict' )->escaped() . "</h2>\n";
3945                 } else {
3946                         $conflict = '<hr />';
3947                 }
3948
3949                 $previewhead = "<div class='previewnote'>\n" .
3950                         '<h2 id="mw-previewheader">' . $this->context->msg( 'preview' )->escaped() . "</h2>" .
3951                         $out->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
3952
3953                 $pageViewLang = $this->mTitle->getPageViewLanguage();
3954                 $attribs = [ 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3955                         'class' => 'mw-content-' . $pageViewLang->getDir() ];
3956                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
3957
3958                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
3959         }
3960
3961         private function incrementEditFailureStats( $failureType ) {
3962                 $stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
3963                 $stats->increment( 'edit.failures.' . $failureType );
3964         }
3965
3966         /**
3967          * Get parser options for a preview
3968          * @return ParserOptions
3969          */
3970         protected function getPreviewParserOptions() {
3971                 $parserOptions = $this->page->makeParserOptions( $this->context );
3972                 $parserOptions->setIsPreview( true );
3973                 $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
3974                 $parserOptions->enableLimitReport();
3975                 return $parserOptions;
3976         }
3977
3978         /**
3979          * Parse the page for a preview. Subclasses may override this class, in order
3980          * to parse with different options, or to otherwise modify the preview HTML.
3981          *
3982          * @param Content $content The page content
3983          * @return array with keys:
3984          *   - parserOutput: The ParserOutput object
3985          *   - html: The HTML to be displayed
3986          */
3987         protected function doPreviewParse( Content $content ) {
3988                 $user = $this->context->getUser();
3989                 $parserOptions = $this->getPreviewParserOptions();
3990                 $pstContent = $content->preSaveTransform( $this->mTitle, $user, $parserOptions );
3991                 $scopedCallback = $parserOptions->setupFakeRevision(
3992                         $this->mTitle, $pstContent, $user );
3993                 $parserOutput = $pstContent->getParserOutput( $this->mTitle, null, $parserOptions );
3994                 ScopedCallback::consume( $scopedCallback );
3995                 $parserOutput->setEditSectionTokens( false ); // no section edit links
3996                 return [
3997                         'parserOutput' => $parserOutput,
3998                         'html' => $parserOutput->getText() ];
3999         }
4000
4001         /**
4002          * @return array
4003          */
4004         public function getTemplates() {
4005                 if ( $this->preview || $this->section != '' ) {
4006                         $templates = [];
4007                         if ( !isset( $this->mParserOutput ) ) {
4008                                 return $templates;
4009                         }
4010                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
4011                                 foreach ( array_keys( $template ) as $dbk ) {
4012                                         $templates[] = Title::makeTitle( $ns, $dbk );
4013                                 }
4014                         }
4015                         return $templates;
4016                 } else {
4017                         return $this->mTitle->getTemplateLinksFrom();
4018                 }
4019         }
4020
4021         /**
4022          * Shows a bulletin board style toolbar for common editing functions.
4023          * It can be disabled in the user preferences.
4024          *
4025          * @param Title $title Title object for the page being edited (optional)
4026          * @return string
4027          */
4028         public static function getEditToolbar( $title = null ) {
4029                 global $wgContLang, $wgOut;
4030                 global $wgEnableUploads, $wgForeignFileRepos;
4031
4032                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
4033                 $showSignature = true;
4034                 if ( $title ) {
4035                         $showSignature = MWNamespace::wantSignatures( $title->getNamespace() );
4036                 }
4037
4038                 /**
4039                  * $toolarray is an array of arrays each of which includes the
4040                  * opening tag, the closing tag, optionally a sample text that is
4041                  * inserted between the two when no selection is highlighted
4042                  * and.  The tip text is shown when the user moves the mouse
4043                  * over the button.
4044                  *
4045                  * Images are defined in ResourceLoaderEditToolbarModule.
4046                  */
4047                 $toolarray = [
4048                         [
4049                                 'id'     => 'mw-editbutton-bold',
4050                                 'open'   => '\'\'\'',
4051                                 'close'  => '\'\'\'',
4052                                 'sample' => wfMessage( 'bold_sample' )->text(),
4053                                 'tip'    => wfMessage( 'bold_tip' )->text(),
4054                         ],
4055                         [
4056                                 'id'     => 'mw-editbutton-italic',
4057                                 'open'   => '\'\'',
4058                                 'close'  => '\'\'',
4059                                 'sample' => wfMessage( 'italic_sample' )->text(),
4060                                 'tip'    => wfMessage( 'italic_tip' )->text(),
4061                         ],
4062                         [
4063                                 'id'     => 'mw-editbutton-link',
4064                                 'open'   => '[[',
4065                                 'close'  => ']]',
4066                                 'sample' => wfMessage( 'link_sample' )->text(),
4067                                 'tip'    => wfMessage( 'link_tip' )->text(),
4068                         ],
4069                         [
4070                                 'id'     => 'mw-editbutton-extlink',
4071                                 'open'   => '[',
4072                                 'close'  => ']',
4073                                 'sample' => wfMessage( 'extlink_sample' )->text(),
4074                                 'tip'    => wfMessage( 'extlink_tip' )->text(),
4075                         ],
4076                         [
4077                                 'id'     => 'mw-editbutton-headline',
4078                                 'open'   => "\n== ",
4079                                 'close'  => " ==\n",
4080                                 'sample' => wfMessage( 'headline_sample' )->text(),
4081                                 'tip'    => wfMessage( 'headline_tip' )->text(),
4082                         ],
4083                         $imagesAvailable ? [
4084                                 'id'     => 'mw-editbutton-image',
4085                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
4086                                 'close'  => ']]',
4087                                 'sample' => wfMessage( 'image_sample' )->text(),
4088                                 'tip'    => wfMessage( 'image_tip' )->text(),
4089                         ] : false,
4090                         $imagesAvailable ? [
4091                                 'id'     => 'mw-editbutton-media',
4092                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
4093                                 'close'  => ']]',
4094                                 'sample' => wfMessage( 'media_sample' )->text(),
4095                                 'tip'    => wfMessage( 'media_tip' )->text(),
4096                         ] : false,
4097                         [
4098                                 'id'     => 'mw-editbutton-nowiki',
4099                                 'open'   => "<nowiki>",
4100                                 'close'  => "</nowiki>",
4101                                 'sample' => wfMessage( 'nowiki_sample' )->text(),
4102                                 'tip'    => wfMessage( 'nowiki_tip' )->text(),
4103                         ],
4104                         $showSignature ? [
4105                                 'id'     => 'mw-editbutton-signature',
4106                                 'open'   => wfMessage( 'sig-text', '~~~~' )->inContentLanguage()->text(),
4107                                 'close'  => '',
4108                                 'sample' => '',
4109                                 'tip'    => wfMessage( 'sig_tip' )->text(),
4110                         ] : false,
4111                         [
4112                                 'id'     => 'mw-editbutton-hr',
4113                                 'open'   => "\n----\n",
4114                                 'close'  => '',
4115                                 'sample' => '',
4116                                 'tip'    => wfMessage( 'hr_tip' )->text(),
4117                         ]
4118                 ];
4119
4120                 $script = 'mw.loader.using("mediawiki.toolbar", function () {';
4121                 foreach ( $toolarray as $tool ) {
4122                         if ( !$tool ) {
4123                                 continue;
4124                         }
4125
4126                         $params = [
4127                                 // Images are defined in ResourceLoaderEditToolbarModule
4128                                 false,
4129                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
4130                                 // Older browsers show a "speedtip" type message only for ALT.
4131                                 // Ideally these should be different, realistically they
4132                                 // probably don't need to be.
4133                                 $tool['tip'],
4134                                 $tool['open'],
4135                                 $tool['close'],
4136                                 $tool['sample'],
4137                                 $tool['id'],
4138                         ];
4139
4140                         $script .= Xml::encodeJsCall(
4141                                 'mw.toolbar.addButton',
4142                                 $params,
4143                                 ResourceLoader::inDebugMode()
4144                         );
4145                 }
4146
4147                 $script .= '});';
4148
4149                 $toolbar = '<div id="toolbar"></div>';
4150
4151                 if ( Hooks::run( 'EditPageBeforeEditToolbar', [ &$toolbar ] ) ) {
4152                         // Only add the old toolbar cruft to the page payload if the toolbar has not
4153                         // been over-written by a hook caller
4154                         $wgOut->addScript( ResourceLoader::makeInlineScript( $script ) );
4155                 };
4156
4157                 return $toolbar;
4158         }
4159
4160         /**
4161          * Return an array of checkbox definitions.
4162          *
4163          * Array keys correspond to the `<input>` 'name' attribute to use for each checkbox.
4164          *
4165          * Array values are associative arrays with the following keys:
4166          *  - 'label-message' (required): message for label text
4167          *  - 'id' (required): 'id' attribute for the `<input>`
4168          *  - 'default' (required): default checkedness (true or false)
4169          *  - 'title-message' (optional): used to generate 'title' attribute for the `<label>`
4170          *  - 'tooltip' (optional): used to generate 'title' and 'accesskey' attributes
4171          *    from messages like 'tooltip-foo', 'accesskey-foo'
4172          *  - 'label-id' (optional): 'id' attribute for the `<label>`
4173          *  - 'legacy-name' (optional): short name for backwards-compatibility
4174          * @param array $checked Array of checkbox name (matching the 'legacy-name') => bool,
4175          *   where bool indicates the checked status of the checkbox
4176          * @return array
4177          */
4178         public function getCheckboxesDefinition( $checked ) {
4179                 $checkboxes = [];
4180
4181                 $user = $this->context->getUser();
4182                 // don't show the minor edit checkbox if it's a new page or section
4183                 if ( !$this->isNew && $user->isAllowed( 'minoredit' ) ) {
4184                         $checkboxes['wpMinoredit'] = [
4185                                 'id' => 'wpMinoredit',
4186                                 'label-message' => 'minoredit',
4187                                 // Uses messages: tooltip-minoredit, accesskey-minoredit
4188                                 'tooltip' => 'minoredit',
4189                                 'label-id' => 'mw-editpage-minoredit',
4190                                 'legacy-name' => 'minor',
4191                                 'default' => $checked['minor'],
4192                         ];
4193                 }
4194
4195                 if ( $user->isLoggedIn() ) {
4196                         $checkboxes['wpWatchthis'] = [
4197                                 'id' => 'wpWatchthis',
4198                                 'label-message' => 'watchthis',
4199                                 // Uses messages: tooltip-watch, accesskey-watch
4200                                 'tooltip' => 'watch',
4201                                 'label-id' => 'mw-editpage-watch',
4202                                 'legacy-name' => 'watch',
4203                                 'default' => $checked['watch'],
4204                         ];
4205                 }
4206
4207                 $editPage = $this;
4208                 Hooks::run( 'EditPageGetCheckboxesDefinition', [ $editPage, &$checkboxes ] );
4209
4210                 return $checkboxes;
4211         }
4212
4213         /**
4214          * Returns an array of html code of the following checkboxes old style:
4215          * minor and watch
4216          *
4217          * @deprecated since 1.30 Use getCheckboxesWidget() or getCheckboxesDefinition() instead
4218          * @param int &$tabindex Current tabindex
4219          * @param array $checked See getCheckboxesDefinition()
4220          * @return array
4221          */
4222         public function getCheckboxes( &$tabindex, $checked ) {
4223                 global $wgUseMediaWikiUIEverywhere;
4224
4225                 $checkboxes = [];
4226                 $checkboxesDef = $this->getCheckboxesDefinition( $checked );
4227
4228                 // Backwards-compatibility for the EditPageBeforeEditChecks hook
4229                 if ( !$this->isNew ) {
4230                         $checkboxes['minor'] = '';
4231                 }
4232                 $checkboxes['watch'] = '';
4233
4234                 foreach ( $checkboxesDef as $name => $options ) {
4235                         $legacyName = isset( $options['legacy-name'] ) ? $options['legacy-name'] : $name;
4236                         $label = $this->context->msg( $options['label-message'] )->parse();
4237                         $attribs = [
4238                                 'tabindex' => ++$tabindex,
4239                                 'id' => $options['id'],
4240                         ];
4241                         $labelAttribs = [
4242                                 'for' => $options['id'],
4243                         ];
4244                         if ( isset( $options['tooltip'] ) ) {
4245                                 $attribs['accesskey'] = $this->context->msg( "accesskey-{$options['tooltip']}" )->text();
4246                                 $labelAttribs['title'] = Linker::titleAttrib( $options['tooltip'], 'withaccess' );
4247                         }
4248                         if ( isset( $options['title-message'] ) ) {
4249                                 $labelAttribs['title'] = $this->context->msg( $options['title-message'] )->text();
4250                         }
4251                         if ( isset( $options['label-id'] ) ) {
4252                                 $labelAttribs['id'] = $options['label-id'];
4253                         }
4254                         $checkboxHtml =
4255                                 Xml::check( $name, $options['default'], $attribs ) .
4256                                 '&#160;' .
4257                                 Xml::tags( 'label', $labelAttribs, $label );
4258
4259                         if ( $wgUseMediaWikiUIEverywhere ) {
4260                                 $checkboxHtml = Html::rawElement( 'div', [ 'class' => 'mw-ui-checkbox' ], $checkboxHtml );
4261                         }
4262
4263                         $checkboxes[ $legacyName ] = $checkboxHtml;
4264                 }
4265
4266                 // Avoid PHP 7.1 warning of passing $this by reference
4267                 $editPage = $this;
4268                 Hooks::run( 'EditPageBeforeEditChecks', [ &$editPage, &$checkboxes, &$tabindex ], '1.29' );
4269                 return $checkboxes;
4270         }
4271
4272         /**
4273          * Returns an array of checkboxes for the edit form, including 'minor' and 'watch' checkboxes and
4274          * any other added by extensions.
4275          *
4276          * @deprecated since 1.30 Use getCheckboxesWidget() or getCheckboxesDefinition() instead
4277          * @param int &$tabindex Current tabindex
4278          * @param array $checked Array of checkbox => bool, where bool indicates the checked
4279          *                 status of the checkbox
4280          *
4281          * @return array Associative array of string keys to OOUI\FieldLayout instances
4282          */
4283         public function getCheckboxesOOUI( &$tabindex, $checked ) {
4284                 return $this->getCheckboxesWidget( $tabindex, $checked );
4285         }
4286
4287         /**
4288          * Returns an array of checkboxes for the edit form, including 'minor' and 'watch' checkboxes and
4289          * any other added by extensions.
4290          *
4291          * @param int &$tabindex Current tabindex
4292          * @param array $checked Array of checkbox => bool, where bool indicates the checked
4293          *                 status of the checkbox
4294          *
4295          * @return array Associative array of string keys to OOUI\FieldLayout instances
4296          */
4297         public function getCheckboxesWidget( &$tabindex, $checked ) {
4298                 $checkboxes = [];
4299                 $checkboxesDef = $this->getCheckboxesDefinition( $checked );
4300
4301                 foreach ( $checkboxesDef as $name => $options ) {
4302                         $legacyName = isset( $options['legacy-name'] ) ? $options['legacy-name'] : $name;
4303
4304                         $title = null;
4305                         $accesskey = null;
4306                         if ( isset( $options['tooltip'] ) ) {
4307                                 $accesskey = $this->context->msg( "accesskey-{$options['tooltip']}" )->text();
4308                                 $title = Linker::titleAttrib( $options['tooltip'] );
4309                         }
4310                         if ( isset( $options['title-message'] ) ) {
4311                                 $title = $this->context->msg( $options['title-message'] )->text();
4312                         }
4313
4314                         $checkboxes[ $legacyName ] = new OOUI\FieldLayout(
4315                                 new OOUI\CheckboxInputWidget( [
4316                                         'tabIndex' => ++$tabindex,
4317                                         'accessKey' => $accesskey,
4318                                         'id' => $options['id'] . 'Widget',
4319                                         'inputId' => $options['id'],
4320                                         'name' => $name,
4321                                         'selected' => $options['default'],
4322                                         'infusable' => true,
4323                                 ] ),
4324                                 [
4325                                         'align' => 'inline',
4326                                         'label' => new OOUI\HtmlSnippet( $this->context->msg( $options['label-message'] )->parse() ),
4327                                         'title' => $title,
4328                                         'id' => isset( $options['label-id'] ) ? $options['label-id'] : null,
4329                                 ]
4330                         );
4331                 }
4332
4333                 // Backwards-compatibility hack to run the EditPageBeforeEditChecks hook. It's important,
4334                 // people have used it for the weirdest things completely unrelated to checkboxes...
4335                 // And if we're gonna run it, might as well allow its legacy checkboxes to be shown.
4336                 $legacyCheckboxes = [];
4337                 if ( !$this->isNew ) {
4338                         $legacyCheckboxes['minor'] = '';
4339                 }
4340                 $legacyCheckboxes['watch'] = '';
4341                 // Copy new-style checkboxes into an old-style structure
4342                 foreach ( $checkboxes as $name => $oouiLayout ) {
4343                         $legacyCheckboxes[$name] = (string)$oouiLayout;
4344                 }
4345                 // Avoid PHP 7.1 warning of passing $this by reference
4346                 $ep = $this;
4347                 Hooks::run( 'EditPageBeforeEditChecks', [ &$ep, &$legacyCheckboxes, &$tabindex ], '1.29' );
4348                 // Copy back any additional old-style checkboxes into the new-style structure
4349                 foreach ( $legacyCheckboxes as $name => $html ) {
4350                         if ( $html && !isset( $checkboxes[$name] ) ) {
4351                                 $checkboxes[$name] = new OOUI\Widget( [ 'content' => new OOUI\HtmlSnippet( $html ) ] );
4352                         }
4353                 }
4354
4355                 return $checkboxes;
4356         }
4357
4358         /**
4359          * Get the message key of the label for the button to save the page
4360          *
4361          * @since 1.30
4362          * @return string
4363          */
4364         protected function getSubmitButtonLabel() {
4365                 $labelAsPublish =
4366                         $this->context->getConfig()->get( 'EditSubmitButtonLabelPublish' );
4367
4368                 // Can't use $this->isNew as that's also true if we're adding a new section to an extant page
4369                 $newPage = !$this->mTitle->exists();
4370
4371                 if ( $labelAsPublish ) {
4372                         $buttonLabelKey = $newPage ? 'publishpage' : 'publishchanges';
4373                 } else {
4374                         $buttonLabelKey = $newPage ? 'savearticle' : 'savechanges';
4375                 }
4376
4377                 return $buttonLabelKey;
4378         }
4379
4380         /**
4381          * Returns an array of html code of the following buttons:
4382          * save, diff and preview
4383          *
4384          * @param int &$tabindex Current tabindex
4385          *
4386          * @return array
4387          */
4388         public function getEditButtons( &$tabindex ) {
4389                 $buttons = [];
4390
4391                 $buttonLabel = $this->context->msg( $this->getSubmitButtonLabel() )->text();
4392
4393                 $attribs = [
4394                         'name' => 'wpSave',
4395                         'tabindex' => ++$tabindex,
4396                 ];
4397
4398                 $saveConfig = OOUI\Element::configFromHtmlAttributes( $attribs );
4399                 $buttons['save'] = new OOUI\ButtonInputWidget( [
4400                         'id' => 'wpSaveWidget',
4401                         'inputId' => 'wpSave',
4402                         // Support: IE 6 – Use <input>, otherwise it can't distinguish which button was clicked
4403                         'useInputTag' => true,
4404                         'flags' => [ 'constructive', 'primary' ],
4405                         'label' => $buttonLabel,
4406                         'infusable' => true,
4407                         'type' => 'submit',
4408                         'title' => Linker::titleAttrib( 'save' ),
4409                         'accessKey' => Linker::accesskey( 'save' ),
4410                 ] + $saveConfig );
4411
4412                 $attribs = [
4413                         'name' => 'wpPreview',
4414                         'tabindex' => ++$tabindex,
4415                 ];
4416
4417                 $previewConfig = OOUI\Element::configFromHtmlAttributes( $attribs );
4418                 $buttons['preview'] = new OOUI\ButtonInputWidget( [
4419                         'id' => 'wpPreviewWidget',
4420                         'inputId' => 'wpPreview',
4421                         // Support: IE 6 – Use <input>, otherwise it can't distinguish which button was clicked
4422                         'useInputTag' => true,
4423                         'label' => $this->context->msg( 'showpreview' )->text(),
4424                         'infusable' => true,
4425                         'type' => 'submit',
4426                         'title' => Linker::titleAttrib( 'preview' ),
4427                         'accessKey' => Linker::accesskey( 'preview' ),
4428                 ] + $previewConfig );
4429
4430                 $attribs = [
4431                         'name' => 'wpDiff',
4432                         'tabindex' => ++$tabindex,
4433                 ];
4434
4435                 $diffConfig = OOUI\Element::configFromHtmlAttributes( $attribs );
4436                 $buttons['diff'] = new OOUI\ButtonInputWidget( [
4437                         'id' => 'wpDiffWidget',
4438                         'inputId' => 'wpDiff',
4439                         // Support: IE 6 – Use <input>, otherwise it can't distinguish which button was clicked
4440                         'useInputTag' => true,
4441                         'label' => $this->context->msg( 'showdiff' )->text(),
4442                         'infusable' => true,
4443                         'type' => 'submit',
4444                         'title' => Linker::titleAttrib( 'diff' ),
4445                         'accessKey' => Linker::accesskey( 'diff' ),
4446                 ] + $diffConfig );
4447
4448                 // Avoid PHP 7.1 warning of passing $this by reference
4449                 $editPage = $this;
4450                 Hooks::run( 'EditPageBeforeEditButtons', [ &$editPage, &$buttons, &$tabindex ] );
4451
4452                 return $buttons;
4453         }
4454
4455         /**
4456          * Creates a basic error page which informs the user that
4457          * they have attempted to edit a nonexistent section.
4458          */
4459         public function noSuchSectionPage() {
4460                 $out = $this->context->getOutput();
4461                 $out->prepareErrorPage( $this->context->msg( 'nosuchsectiontitle' ) );
4462
4463                 $res = $this->context->msg( 'nosuchsectiontext', $this->section )->parseAsBlock();
4464
4465                 // Avoid PHP 7.1 warning of passing $this by reference
4466                 $editPage = $this;
4467                 Hooks::run( 'EditPageNoSuchSection', [ &$editPage, &$res ] );
4468                 $out->addHTML( $res );
4469
4470                 $out->returnToMain( false, $this->mTitle );
4471         }
4472
4473         /**
4474          * Show "your edit contains spam" page with your diff and text
4475          *
4476          * @param string|array|bool $match Text (or array of texts) which triggered one or more filters
4477          */
4478         public function spamPageWithContent( $match = false ) {
4479                 $this->textbox2 = $this->textbox1;
4480
4481                 if ( is_array( $match ) ) {
4482                         $match = $this->context->getLanguage()->listToText( $match );
4483                 }
4484                 $out = $this->context->getOutput();
4485                 $out->prepareErrorPage( $this->context->msg( 'spamprotectiontitle' ) );
4486
4487                 $out->addHTML( '<div id="spamprotected">' );
4488                 $out->addWikiMsg( 'spamprotectiontext' );
4489                 if ( $match ) {
4490                         $out->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
4491                 }
4492                 $out->addHTML( '</div>' );
4493
4494                 $out->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
4495                 $this->showDiff();
4496
4497                 $out->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
4498                 $this->showTextbox2();
4499
4500                 $out->addReturnTo( $this->getContextTitle(), [ 'action' => 'edit' ] );
4501         }
4502
4503         /**
4504          * Filter an input field through a Unicode de-armoring process if it
4505          * came from an old browser with known broken Unicode editing issues.
4506          *
4507          * @deprecated since 1.30, does nothing
4508          *
4509          * @param WebRequest $request
4510          * @param string $field
4511          * @return string
4512          */
4513         protected function safeUnicodeInput( $request, $field ) {
4514                 return rtrim( $request->getText( $field ) );
4515         }
4516
4517         /**
4518          * Filter an output field through a Unicode armoring process if it is
4519          * going to an old browser with known broken Unicode editing issues.
4520          *
4521          * @deprecated since 1.30, does nothing
4522          *
4523          * @param string $text
4524          * @return string
4525          */
4526         protected function safeUnicodeOutput( $text ) {
4527                 return $text;
4528         }
4529
4530         /**
4531          * @since 1.29
4532          */
4533         protected function addEditNotices() {
4534                 $out = $this->context->getOutput();
4535                 $editNotices = $this->mTitle->getEditNotices( $this->oldid );
4536                 if ( count( $editNotices ) ) {
4537                         $out->addHTML( implode( "\n", $editNotices ) );
4538                 } else {
4539                         $msg = $this->context->msg( 'editnotice-notext' );
4540                         if ( !$msg->isDisabled() ) {
4541                                 $out->addHTML(
4542                                         '<div class="mw-editnotice-notext">'
4543                                         . $msg->parseAsBlock()
4544                                         . '</div>'
4545                                 );
4546                         }
4547                 }
4548         }
4549
4550         /**
4551          * @since 1.29
4552          */
4553         protected function addTalkPageText() {
4554                 if ( $this->mTitle->isTalkPage() ) {
4555                         $this->context->getOutput()->addWikiMsg( 'talkpagetext' );
4556                 }
4557         }
4558
4559         /**
4560          * @since 1.29
4561          */
4562         protected function addLongPageWarningHeader() {
4563                 if ( $this->contentLength === false ) {
4564                         $this->contentLength = strlen( $this->textbox1 );
4565                 }
4566
4567                 $out = $this->context->getOutput();
4568                 $lang = $this->context->getLanguage();
4569                 $maxArticleSize = $this->context->getConfig()->get( 'MaxArticleSize' );
4570                 if ( $this->tooBig || $this->contentLength > $maxArticleSize * 1024 ) {
4571                         $out->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
4572                                 [
4573                                         'longpageerror',
4574                                         $lang->formatNum( round( $this->contentLength / 1024, 3 ) ),
4575                                         $lang->formatNum( $maxArticleSize )
4576                                 ]
4577                         );
4578                 } else {
4579                         if ( !$this->context->msg( 'longpage-hint' )->isDisabled() ) {
4580                                 $out->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
4581                                         [
4582                                                 'longpage-hint',
4583                                                 $lang->formatSize( strlen( $this->textbox1 ) ),
4584                                                 strlen( $this->textbox1 )
4585                                         ]
4586                                 );
4587                         }
4588                 }
4589         }
4590
4591         /**
4592          * @since 1.29
4593          */
4594         protected function addPageProtectionWarningHeaders() {
4595                 $out = $this->context->getOutput();
4596                 if ( $this->mTitle->isProtected( 'edit' ) &&
4597                         MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== [ '' ]
4598                 ) {
4599                         # Is the title semi-protected?
4600                         if ( $this->mTitle->isSemiProtected() ) {
4601                                 $noticeMsg = 'semiprotectedpagewarning';
4602                         } else {
4603                                 # Then it must be protected based on static groups (regular)
4604                                 $noticeMsg = 'protectedpagewarning';
4605                         }
4606                         LogEventsList::showLogExtract( $out, 'protect', $this->mTitle, '',
4607                                 [ 'lim' => 1, 'msgKey' => [ $noticeMsg ] ] );
4608                 }
4609                 if ( $this->mTitle->isCascadeProtected() ) {
4610                         # Is this page under cascading protection from some source pages?
4611                         /** @var Title[] $cascadeSources */
4612                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
4613                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
4614                         $cascadeSourcesCount = count( $cascadeSources );
4615                         if ( $cascadeSourcesCount > 0 ) {
4616                                 # Explain, and list the titles responsible
4617                                 foreach ( $cascadeSources as $page ) {
4618                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
4619                                 }
4620                         }
4621                         $notice .= '</div>';
4622                         $out->wrapWikiMsg( $notice, [ 'cascadeprotectedwarning', $cascadeSourcesCount ] );
4623                 }
4624                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
4625                         LogEventsList::showLogExtract( $out, 'protect', $this->mTitle, '',
4626                                 [ 'lim' => 1,
4627                                         'showIfEmpty' => false,
4628                                         'msgKey' => [ 'titleprotectedwarning' ],
4629                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ] );
4630                 }
4631         }
4632
4633         /**
4634          * @param OutputPage $out
4635          * @since 1.29
4636          */
4637         protected function addExplainConflictHeader( OutputPage $out ) {
4638                 $out->wrapWikiMsg(
4639                         "<div class='mw-explainconflict'>\n$1\n</div>",
4640                         [ 'explainconflict', $this->context->msg( $this->getSubmitButtonLabel() )->text() ]
4641                 );
4642         }
4643
4644         /**
4645          * @param string $name
4646          * @param mixed[] $customAttribs
4647          * @param User $user
4648          * @return mixed[]
4649          * @since 1.29
4650          */
4651         protected function buildTextboxAttribs( $name, array $customAttribs, User $user ) {
4652                 $attribs = $customAttribs + [
4653                                 'accesskey' => ',',
4654                                 'id' => $name,
4655                                 'cols' => 80,
4656                                 'rows' => 25,
4657                                 // Avoid PHP notices when appending preferences
4658                                 // (appending allows customAttribs['style'] to still work).
4659                                 'style' => ''
4660                         ];
4661
4662                 // The following classes can be used here:
4663                 // * mw-editfont-default
4664                 // * mw-editfont-monospace
4665                 // * mw-editfont-sans-serif
4666                 // * mw-editfont-serif
4667                 $class = 'mw-editfont-' . $user->getOption( 'editfont' );
4668
4669                 if ( isset( $attribs['class'] ) ) {
4670                         if ( is_string( $attribs['class'] ) ) {
4671                                 $attribs['class'] .= ' ' . $class;
4672                         } elseif ( is_array( $attribs['class'] ) ) {
4673                                 $attribs['class'][] = $class;
4674                         }
4675                 } else {
4676                         $attribs['class'] = $class;
4677                 }
4678
4679                 $pageLang = $this->mTitle->getPageLanguage();
4680                 $attribs['lang'] = $pageLang->getHtmlCode();
4681                 $attribs['dir'] = $pageLang->getDir();
4682
4683                 return $attribs;
4684         }
4685
4686         /**
4687          * @param string $wikitext
4688          * @return string
4689          * @since 1.29
4690          */
4691         protected function addNewLineAtEnd( $wikitext ) {
4692                 if ( strval( $wikitext ) !== '' ) {
4693                         // Ensure there's a newline at the end, otherwise adding lines
4694                         // is awkward.
4695                         // But don't add a newline if the text is empty, or Firefox in XHTML
4696                         // mode will show an extra newline. A bit annoying.
4697                         $wikitext .= "\n";
4698                         return $wikitext;
4699                 }
4700                 return $wikitext;
4701         }
4702
4703         /**
4704          * Turns section name wikitext into anchors for use in HTTP redirects. Various
4705          * versions of Microsoft browsers misinterpret fragment encoding of Location: headers
4706          * resulting in mojibake in address bar. Redirect them to legacy section IDs,
4707          * if possible. All the other browsers get HTML5 if the wiki is configured for it, to
4708          * spread the new style links more efficiently.
4709          *
4710          * @param string $text
4711          * @return string
4712          */
4713         private function guessSectionName( $text ) {
4714                 global $wgParser;
4715
4716                 // Detect Microsoft browsers
4717                 $userAgent = $this->context->getRequest()->getHeader( 'User-Agent' );
4718                 if ( $userAgent && preg_match( '/MSIE|Edge/', $userAgent ) ) {
4719                         // ...and redirect them to legacy encoding, if available
4720                         return $wgParser->guessLegacySectionNameFromWikiText( $text );
4721                 }
4722                 // Meanwhile, real browsers get real anchors
4723                 return $wgParser->guessSectionNameFromWikiText( $text );
4724         }
4725 }