includes/EditPage.php

   1 <?php
   2 /**
   3  * User interface for page editing.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * The edit page/HTML interface (split from Article)
  25  * The actual database and text munging is still in Article,
  26  * but it should get easier to call those from alternate
  27  * interfaces.
  28  *
  29  * EditPage cares about two distinct titles:
  30  * $this->mContextTitle is the page that forms submit to, links point to,
  31  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  32  * page in the database that is actually being edited. These are
  33  * usually the same, but they are now allowed to be different.
  34  *
  35  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  36  * headaches, which may be fatal.
  37  */
  38 class EditPage {
  39         /**
  40          * Status: Article successfully updated
  41          */
  42         const AS_SUCCESS_UPDATE = 200;
  43
  44         /**
  45          * Status: Article successfully created
  46          */
  47         const AS_SUCCESS_NEW_ARTICLE = 201;
  48
  49         /**
  50          * Status: Article update aborted by a hook function
  51          */
  52         const AS_HOOK_ERROR = 210;
  53
  54         /**
  55          * Status: A hook function returned an error
  56          */
  57         const AS_HOOK_ERROR_EXPECTED = 212;
  58
  59         /**
  60          * Status: User is blocked from editing this page
  61          */
  62         const AS_BLOCKED_PAGE_FOR_USER = 215;
  63
  64         /**
  65          * Status: Content too big (> $wgMaxArticleSize)
  66          */
  67         const AS_CONTENT_TOO_BIG = 216;
  68
  69         /**
  70          * Status: this anonymous user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_ANON = 218;
  73
  74         /**
  75          * Status: this logged in user is not allowed to edit this page
  76          */
  77         const AS_READ_ONLY_PAGE_LOGGED = 219;
  78
  79         /**
  80          * Status: wiki is in readonly mode (wfReadOnly() == true)
  81          */
  82         const AS_READ_ONLY_PAGE = 220;
  83
  84         /**
  85          * Status: rate limiter for action 'edit' was tripped
  86          */
  87         const AS_RATE_LIMITED = 221;
  88
  89         /**
  90          * Status: article was deleted while editing and param wpRecreate == false or form
  91          * was not posted
  92          */
  93         const AS_ARTICLE_WAS_DELETED = 222;
  94
  95         /**
  96          * Status: user tried to create this page, but is not allowed to do that
  97          * ( Title->userCan('create') == false )
  98          */
  99         const AS_NO_CREATE_PERMISSION = 223;
 100
 101         /**
 102          * Status: user tried to create a blank page and wpIgnoreBlankArticle == false
 103          */
 104         const AS_BLANK_ARTICLE = 224;
 105
 106         /**
 107          * Status: (non-resolvable) edit conflict
 108          */
 109         const AS_CONFLICT_DETECTED = 225;
 110
 111         /**
 112          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 113          * editing in his own userspace or talkspace and wpIgnoreBlankSummary == false
 114          */
 115         const AS_SUMMARY_NEEDED = 226;
 116
 117         /**
 118          * Status: user tried to create a new section without content
 119          */
 120         const AS_TEXTBOX_EMPTY = 228;
 121
 122         /**
 123          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 124          */
 125         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessful
 129          */
 130         const AS_END = 231;
 131
 132         /**
 133          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 134          */
 135         const AS_SPAM_ERROR = 232;
 136
 137         /**
 138          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 139          */
 140         const AS_IMAGE_REDIRECT_ANON = 233;
 141
 142         /**
 143          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 144          */
 145         const AS_IMAGE_REDIRECT_LOGGED = 234;
 146
 147         /**
 148          * Status: user tried to modify the content model, but is not allowed to do that
 149          * ( User::isAllowed('editcontentmodel') == false )
 150          */
 151         const AS_NO_CHANGE_CONTENT_MODEL = 235;
 152
 153         /**
 154          * Status: can't parse content
 155          */
 156         const AS_PARSE_ERROR = 240;
 157
 158         /**
 159          * HTML id and name for the beginning of the edit form.
 160          */
 161         const EDITFORM_ID = 'editform';
 162
 163         /**
 164          * Prefix of key for cookie used to pass post-edit state.
 165          * The revision id edited is added after this
 166          */
 167         const POST_EDIT_COOKIE_KEY_PREFIX = 'PostEditRevision';
 168
 169         /**
 170          * Duration of PostEdit cookie, in seconds.
 171          * The cookie will be removed instantly if the JavaScript runs.
 172          *
 173          * Otherwise, though, we don't want the cookies to accumulate.
 174          * RFC 2109 ( https://www.ietf.org/rfc/rfc2109.txt ) specifies a possible
 175          * limit of only 20 cookies per domain. This still applies at least to some
 176          * versions of IE without full updates:
 177          * https://blogs.msdn.com/b/ieinternals/archive/2009/08/20/wininet-ie-cookie-internals-faq.aspx
 178          *
 179          * A value of 20 minutes should be enough to take into account slow loads and minor
 180          * clock skew while still avoiding cookie accumulation when JavaScript is turned off.
 181          */
 182         const POST_EDIT_COOKIE_DURATION = 1200;
 183
 184         /** @var Article */
 185         public $mArticle;
 186
 187         /** @var Title */
 188         public $mTitle;
 189
 190         /** @var null|Title */
 191         private $mContextTitle = null;
 192
 193         /** @var string */
 194         public $action = 'submit';
 195
 196         /** @var bool */
 197         public $isConflict = false;
 198
 199         /** @var bool */
 200         public $isCssJsSubpage = false;
 201
 202         /** @var bool */
 203         public $isCssSubpage = false;
 204
 205         /** @var bool */
 206         public $isJsSubpage = false;
 207
 208         /** @var bool */
 209         public $isWrongCaseCssJsPage = false;
 210
 211         /** @var bool New page or new section */
 212         public $isNew = false;
 213
 214         /** @var bool */
 215         public $deletedSinceEdit;
 216
 217         /** @var string */
 218         public $formtype;
 219
 220         /** @var bool */
 221         public $firsttime;
 222
 223         /** @var bool|stdClass */
 224         public $lastDelete;
 225
 226         /** @var bool */
 227         public $mTokenOk = false;
 228
 229         /** @var bool */
 230         public $mTokenOkExceptSuffix = false;
 231
 232         /** @var bool */
 233         public $mTriedSave = false;
 234
 235         /** @var bool */
 236         public $incompleteForm = false;
 237
 238         /** @var bool */
 239         public $tooBig = false;
 240
 241         /** @var bool */
 242         public $kblength = false;
 243
 244         /** @var bool */
 245         public $missingComment = false;
 246
 247         /** @var bool */
 248         public $missingSummary = false;
 249
 250         /** @var bool */
 251         public $allowBlankSummary = false;
 252
 253         /** @var bool */
 254         protected $blankArticle = false;
 255
 256         /** @var bool */
 257         protected $allowBlankArticle = false;
 258
 259         /** @var string */
 260         public $autoSumm = '';
 261
 262         /** @var string */
 263         public $hookError = '';
 264
 265         /** @var ParserOutput */
 266         public $mParserOutput;
 267
 268         /** @var bool Has a summary been preset using GET parameter &summary= ? */
 269         public $hasPresetSummary = false;
 270
 271         /** @var bool */
 272         public $mBaseRevision = false;
 273
 274         /** @var bool */
 275         public $mShowSummaryField = true;
 276
 277         # Form values
 278
 279         /** @var bool */
 280         public $save = false;
 281
 282         /** @var bool */
 283         public $preview = false;
 284
 285         /** @var bool */
 286         public $diff = false;
 287
 288         /** @var bool */
 289         public $minoredit = false;
 290
 291         /** @var bool */
 292         public $watchthis = false;
 293
 294         /** @var bool */
 295         public $recreate = false;
 296
 297         /** @var string */
 298         public $textbox1 = '';
 299
 300         /** @var string */
 301         public $textbox2 = '';
 302
 303         /** @var string */
 304         public $summary = '';
 305
 306         /** @var bool */
 307         public $nosummary = false;
 308
 309         /** @var string */
 310         public $edittime = '';
 311
 312         /** @var string */
 313         public $section = '';
 314
 315         /** @var string */
 316         public $sectiontitle = '';
 317
 318         /** @var string */
 319         public $starttime = '';
 320
 321         /** @var int */
 322         public $oldid = 0;
 323
 324         /** @var string */
 325         public $editintro = '';
 326
 327         /** @var null */
 328         public $scrolltop = null;
 329
 330         /** @var bool */
 331         public $bot = true;
 332
 333         /** @var null|string */
 334         public $contentModel = null;
 335
 336         /** @var null|string */
 337         public $contentFormat = null;
 338
 339         # Placeholders for text injection by hooks (must be HTML)
 340         # extensions should take care to _append_ to the present value
 341
 342         /** @var string Before even the preview */
 343         public $editFormPageTop = '';
 344         public $editFormTextTop = '';
 345         public $editFormTextBeforeContent = '';
 346         public $editFormTextAfterWarn = '';
 347         public $editFormTextAfterTools = '';
 348         public $editFormTextBottom = '';
 349         public $editFormTextAfterContent = '';
 350         public $previewTextAfterContent = '';
 351         public $mPreloadContent = null;
 352
 353         /* $didSave should be set to true whenever an article was successfully altered. */
 354         public $didSave = false;
 355         public $undidRev = 0;
 356
 357         public $suppressIntro = false;
 358
 359         /** @var bool Set to true to allow editing of non-text content types. */
 360         public $allowNonTextContent = false;
 361
 362         /** @var bool */
 363         protected $edit;
 364
 365         /** @var bool */
 366         public $live;
 367
 368         /**
 369          * @param Article $article
 370          */
 371         public function __construct( Article $article ) {
 372                 $this->mArticle = $article;
 373                 $this->mTitle = $article->getTitle();
 374
 375                 $this->contentModel = $this->mTitle->getContentModel();
 376
 377                 $handler = ContentHandler::getForModelID( $this->contentModel );
 378                 $this->contentFormat = $handler->getDefaultFormat();
 379         }
 380
 381         /**
 382          * @return Article
 383          */
 384         public function getArticle() {
 385                 return $this->mArticle;
 386         }
 387
 388         /**
 389          * @since 1.19
 390          * @return Title
 391          */
 392         public function getTitle() {
 393                 return $this->mTitle;
 394         }
 395
 396         /**
 397          * Set the context Title object
 398          *
 399          * @param Title|null $title Title object or null
 400          */
 401         public function setContextTitle( $title ) {
 402                 $this->mContextTitle = $title;
 403         }
 404
 405         /**
 406          * Get the context title object.
 407          * If not set, $wgTitle will be returned. This behavior might change in
 408          * the future to return $this->mTitle instead.
 409          *
 410          * @return Title
 411          */
 412         public function getContextTitle() {
 413                 if ( is_null( $this->mContextTitle ) ) {
 414                         global $wgTitle;
 415                         return $wgTitle;
 416                 } else {
 417                         return $this->mContextTitle;
 418                 }
 419         }
 420
 421         /**
 422          * Returns if the given content model is editable.
 423          *
 424          * @param string $modelId The ID of the content model to test. Use CONTENT_MODEL_XXX constants.
 425          * @return bool
 426          * @throws MWException If $modelId has no known handler
 427          */
 428         public function isSupportedContentModel( $modelId ) {
 429                 return $this->allowNonTextContent ||
 430                         ContentHandler::getForModelID( $modelId ) instanceof TextContentHandler;
 431         }
 432
 433         function submit() {
 434                 $this->edit();
 435         }
 436
 437         /**
 438          * This is the function that gets called for "action=edit". It
 439          * sets up various member variables, then passes execution to
 440          * another function, usually showEditForm()
 441          *
 442          * The edit form is self-submitting, so that when things like
 443          * preview and edit conflicts occur, we get the same form back
 444          * with the extra stuff added.  Only when the final submission
 445          * is made and all is well do we actually save and redirect to
 446          * the newly-edited page.
 447          */
 448         function edit() {
 449                 global $wgOut, $wgRequest, $wgUser;
 450                 // Allow extensions to modify/prevent this form or submission
 451                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 452                         return;
 453                 }
 454
 455                 wfProfileIn( __METHOD__ );
 456                 wfDebug( __METHOD__ . ": enter\n" );
 457
 458                 // If they used redlink=1 and the page exists, redirect to the main article
 459                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 460                         $wgOut->redirect( $this->mTitle->getFullURL() );
 461                         wfProfileOut( __METHOD__ );
 462                         return;
 463                 }
 464
 465                 $this->importFormData( $wgRequest );
 466                 $this->firsttime = false;
 467
 468                 if ( $this->live ) {
 469                         $this->livePreview();
 470                         wfProfileOut( __METHOD__ );
 471                         return;
 472                 }
 473
 474                 if ( wfReadOnly() && $this->save ) {
 475                         // Force preview
 476                         $this->save = false;
 477                         $this->preview = true;
 478                 }
 479
 480                 if ( $this->save ) {
 481                         $this->formtype = 'save';
 482                 } elseif ( $this->preview ) {
 483                         $this->formtype = 'preview';
 484                 } elseif ( $this->diff ) {
 485                         $this->formtype = 'diff';
 486                 } else { # First time through
 487                         $this->firsttime = true;
 488                         if ( $this->previewOnOpen() ) {
 489                                 $this->formtype = 'preview';
 490                         } else {
 491                                 $this->formtype = 'initial';
 492                         }
 493                 }
 494
 495                 $permErrors = $this->getEditPermissionErrors();
 496                 if ( $permErrors ) {
 497                         wfDebug( __METHOD__ . ": User can't edit\n" );
 498                         // Auto-block user's IP if the account was "hard" blocked
 499                         $wgUser->spreadAnyEditBlock();
 500
 501                         $this->displayPermissionsError( $permErrors );
 502
 503                         wfProfileOut( __METHOD__ );
 504                         return;
 505                 }
 506
 507                 wfProfileIn( __METHOD__ . "-business-end" );
 508
 509                 $this->isConflict = false;
 510                 // css / js subpages of user pages get a special treatment
 511                 $this->isCssJsSubpage = $this->mTitle->isCssJsSubpage();
 512                 $this->isCssSubpage = $this->mTitle->isCssSubpage();
 513                 $this->isJsSubpage = $this->mTitle->isJsSubpage();
 514                 // @todo FIXME: Silly assignment.
 515                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 516
 517                 # Show applicable editing introductions
 518                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 519                         $this->showIntro();
 520                 }
 521
 522                 # Attempt submission here.  This will check for edit conflicts,
 523                 # and redundantly check for locked database, blocked IPs, etc.
 524                 # that edit() already checked just in case someone tries to sneak
 525                 # in the back door with a hand-edited submission URL.
 526
 527                 if ( 'save' == $this->formtype ) {
 528                         if ( !$this->attemptSave() ) {
 529                                 wfProfileOut( __METHOD__ . "-business-end" );
 530                                 wfProfileOut( __METHOD__ );
 531                                 return;
 532                         }
 533                 }
 534
 535                 # First time through: get contents, set time for conflict
 536                 # checking, etc.
 537                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 538                         if ( $this->initialiseForm() === false ) {
 539                                 $this->noSuchSectionPage();
 540                                 wfProfileOut( __METHOD__ . "-business-end" );
 541                                 wfProfileOut( __METHOD__ );
 542                                 return;
 543                         }
 544
 545                         if ( !$this->mTitle->getArticleID() ) {
 546                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 547                         } else {
 548                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 549                         }
 550
 551                 }
 552
 553                 $this->showEditForm();
 554                 wfProfileOut( __METHOD__ . "-business-end" );
 555                 wfProfileOut( __METHOD__ );
 556         }
 557
 558         /**
 559          * @return array
 560          */
 561         protected function getEditPermissionErrors() {
 562                 global $wgUser;
 563                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 564                 # Can this title be created?
 565                 if ( !$this->mTitle->exists() ) {
 566                         $permErrors = array_merge( $permErrors,
 567                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 568                 }
 569                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 570                 $remove = array();
 571                 foreach ( $permErrors as $error ) {
 572                         if ( ( $this->preview || $this->diff )
 573                                 && ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' )
 574                         ) {
 575                                 $remove[] = $error;
 576                         }
 577                 }
 578                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 579                 return $permErrors;
 580         }
 581
 582         /**
 583          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 584          * but with the following differences:
 585          * - If redlink=1, the user will be redirected to the page
 586          * - If there is content to display or the error occurs while either saving,
 587          *   previewing or showing the difference, it will be a
 588          *   "View source for ..." page displaying the source code after the error message.
 589          *
 590          * @since 1.19
 591          * @param array $permErrors Array of permissions errors, as returned by
 592          *    Title::getUserPermissionsErrors().
 593          * @throws PermissionsError
 594          */
 595         protected function displayPermissionsError( array $permErrors ) {
 596                 global $wgRequest, $wgOut;
 597
 598                 if ( $wgRequest->getBool( 'redlink' ) ) {
 599                         // The edit page was reached via a red link.
 600                         // Redirect to the article page and let them click the edit tab if
 601                         // they really want a permission error.
 602                         $wgOut->redirect( $this->mTitle->getFullURL() );
 603                         return;
 604                 }
 605
 606                 $content = $this->getContentObject();
 607
 608                 # Use the normal message if there's nothing to display
 609                 if ( $this->firsttime && ( !$content || $content->isEmpty() ) ) {
 610                         $action = $this->mTitle->exists() ? 'edit' :
 611                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 612                         throw new PermissionsError( $action, $permErrors );
 613                 }
 614
 615                 wfRunHooks( 'EditPage::showReadOnlyForm:initial', array( $this, &$wgOut ) );
 616
 617                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 618                 $wgOut->setPageTitle( wfMessage(
 619                         'viewsource-title',
 620                         $this->getContextTitle()->getPrefixedText()
 621                 ) );
 622                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 623                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 624                 $wgOut->addHTML( "<hr />\n" );
 625
 626                 # If the user made changes, preserve them when showing the markup
 627                 # (This happens when a user is blocked during edit, for instance)
 628                 if ( !$this->firsttime ) {
 629                         $text = $this->textbox1;
 630                         $wgOut->addWikiMsg( 'viewyourtext' );
 631                 } else {
 632                         $text = $this->toEditText( $content );
 633                         $wgOut->addWikiMsg( 'viewsourcetext' );
 634                 }
 635
 636                 $this->showTextbox( $text, 'wpTextbox1', array( 'readonly' ) );
 637
 638                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 639                         Linker::formatTemplates( $this->getTemplates() ) ) );
 640
 641                 $wgOut->addModules( 'mediawiki.action.edit.collapsibleFooter' );
 642
 643                 if ( $this->mTitle->exists() ) {
 644                         $wgOut->returnToMain( null, $this->mTitle );
 645                 }
 646         }
 647
 648         /**
 649          * Should we show a preview when the edit form is first shown?
 650          *
 651          * @return bool
 652          */
 653         protected function previewOnOpen() {
 654                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 655                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 656                         // Explicit override from request
 657                         return true;
 658                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 659                         // Explicit override from request
 660                         return false;
 661                 } elseif ( $this->section == 'new' ) {
 662                         // Nothing *to* preview for new sections
 663                         return false;
 664                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() )
 665                         && $wgUser->getOption( 'previewonfirst' )
 666                 ) {
 667                         // Standard preference behavior
 668                         return true;
 669                 } elseif ( !$this->mTitle->exists()
 670                         && isset( $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 671                         && $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]
 672                 ) {
 673                         // Categories are special
 674                         return true;
 675                 } else {
 676                         return false;
 677                 }
 678         }
 679
 680         /**
 681          * Checks whether the user entered a skin name in uppercase,
 682          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 683          *
 684          * @return bool
 685          */
 686         protected function isWrongCaseCssJsPage() {
 687                 if ( $this->mTitle->isCssJsSubpage() ) {
 688                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 689                         $skins = array_merge(
 690                                 array_keys( Skin::getSkinNames() ),
 691                                 array( 'common' )
 692                         );
 693                         return !in_array( $name, $skins )
 694                                 && in_array( strtolower( $name ), $skins );
 695                 } else {
 696                         return false;
 697                 }
 698         }
 699
 700         /**
 701          * Returns whether section editing is supported for the current page.
 702          * Subclasses may override this to replace the default behavior, which is
 703          * to check ContentHandler::supportsSections.
 704          *
 705          * @return bool True if this edit page supports sections, false otherwise.
 706          */
 707         protected function isSectionEditSupported() {
 708                 $contentHandler = ContentHandler::getForTitle( $this->mTitle );
 709                 return $contentHandler->supportsSections();
 710         }
 711
 712         /**
 713          * This function collects the form data and uses it to populate various member variables.
 714          * @param WebRequest $request
 715          * @throws ErrorPageError
 716          */
 717         function importFormData( &$request ) {
 718                 global $wgContLang, $wgUser;
 719
 720                 wfProfileIn( __METHOD__ );
 721
 722                 # Section edit can come from either the form or a link
 723                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 724
 725                 if ( $this->section !== null && $this->section !== '' && !$this->isSectionEditSupported() ) {
 726                         wfProfileOut( __METHOD__ );
 727                         throw new ErrorPageError( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
 728                 }
 729
 730                 $this->isNew = !$this->mTitle->exists() || $this->section == 'new';
 731
 732                 if ( $request->wasPosted() ) {
 733                         # These fields need to be checked for encoding.
 734                         # Also remove trailing whitespace, but don't remove _initial_
 735                         # whitespace from the text boxes. This may be significant formatting.
 736                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 737                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 738                                 // Skip this if wpTextbox2 has input, it indicates that we came
 739                                 // from a conflict page with raw page text, not a custom form
 740                                 // modified by subclasses
 741                                 wfProfileIn( get_class( $this ) . "::importContentFormData" );
 742                                 $textbox1 = $this->importContentFormData( $request );
 743                                 if ( $textbox1 !== null ) {
 744                                         $this->textbox1 = $textbox1;
 745                                 }
 746
 747                                 wfProfileOut( get_class( $this ) . "::importContentFormData" );
 748                         }
 749
 750                         # Truncate for whole multibyte characters
 751                         $this->summary = $wgContLang->truncate( $request->getText( 'wpSummary' ), 255 );
 752
 753                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 754                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 755                         # section titles.
 756                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 757
 758                         # Treat sectiontitle the same way as summary.
 759                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 760                         # currently doing double duty as both edit summary and section title. Right now this
 761                         # is just to allow API edits to work around this limitation, but this should be
 762                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 763                         $this->sectiontitle = $wgContLang->truncate( $request->getText( 'wpSectionTitle' ), 255 );
 764                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 765
 766                         $this->edittime = $request->getVal( 'wpEdittime' );
 767                         $this->starttime = $request->getVal( 'wpStarttime' );
 768
 769                         $undidRev = $request->getInt( 'wpUndidRevision' );
 770                         if ( $undidRev ) {
 771                                 $this->undidRev = $undidRev;
 772                         }
 773
 774                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 775
 776                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 777                                 // wpTextbox1 field is missing, possibly due to being "too big"
 778                                 // according to some filter rules such as Suhosin's setting for
 779                                 // suhosin.request.max_value_length (d'oh)
 780                                 $this->incompleteForm = true;
 781                         } else {
 782                                 // If we receive the last parameter of the request, we can fairly
 783                                 // claim the POST request has not been truncated.
 784
 785                                 // TODO: softened the check for cutover.  Once we determine
 786                                 // that it is safe, we should complete the transition by
 787                                 // removing the "edittime" clause.
 788                                 $this->incompleteForm = ( !$request->getVal( 'wpUltimateParam' )
 789                                         && is_null( $this->edittime ) );
 790                         }
 791                         if ( $this->incompleteForm ) {
 792                                 # If the form is incomplete, force to preview.
 793                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 794                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 795                                 $this->preview = true;
 796                         } else {
 797                                 /* Fallback for live preview */
 798                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 799                                 $this->diff = $request->getCheck( 'wpDiff' );
 800
 801                                 // Remember whether a save was requested, so we can indicate
 802                                 // if we forced preview due to session failure.
 803                                 $this->mTriedSave = !$this->preview;
 804
 805                                 if ( $this->tokenOk( $request ) ) {
 806                                         # Some browsers will not report any submit button
 807                                         # if the user hits enter in the comment box.
 808                                         # The unmarked state will be assumed to be a save,
 809                                         # if the form seems otherwise complete.
 810                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 811                                 } elseif ( $this->diff ) {
 812                                         # Failed token check, but only requested "Show Changes".
 813                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 814                                 } else {
 815                                         # Page might be a hack attempt posted from
 816                                         # an external site. Preview instead of saving.
 817                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 818                                         $this->preview = true;
 819                                 }
 820                         }
 821                         $this->save = !$this->preview && !$this->diff;
 822                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 823                                 $this->edittime = null;
 824                         }
 825
 826                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 827                                 $this->starttime = null;
 828                         }
 829
 830                         $this->recreate = $request->getCheck( 'wpRecreate' );
 831
 832                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 833                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 834
 835                         # Don't force edit summaries when a user is editing their own user or talk page
 836                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK )
 837                                 && $this->mTitle->getText() == $wgUser->getName()
 838                         ) {
 839                                 $this->allowBlankSummary = true;
 840                         } else {
 841                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' )
 842                                         || !$wgUser->getOption( 'forceeditsummary' );
 843                         }
 844
 845                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 846
 847                         $this->allowBlankArticle = $request->getBool( 'wpIgnoreBlankArticle' );
 848                 } else {
 849                         # Not a posted form? Start with nothing.
 850                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 851                         $this->textbox1 = '';
 852                         $this->summary = '';
 853                         $this->sectiontitle = '';
 854                         $this->edittime = '';
 855                         $this->starttime = wfTimestampNow();
 856                         $this->edit = false;
 857                         $this->preview = false;
 858                         $this->save = false;
 859                         $this->diff = false;
 860                         $this->minoredit = false;
 861                         // Watch may be overridden by request parameters
 862                         $this->watchthis = $request->getBool( 'watchthis', false );
 863                         $this->recreate = false;
 864
 865                         // When creating a new section, we can preload a section title by passing it as the
 866                         // preloadtitle parameter in the URL (Bug 13100)
 867                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 868                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 869                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 870                                 $this->summary = $request->getVal( 'preloadtitle' );
 871                         } elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 872                                 $this->summary = $request->getText( 'summary' );
 873                                 if ( $this->summary !== '' ) {
 874                                         $this->hasPresetSummary = true;
 875                                 }
 876                         }
 877
 878                         if ( $request->getVal( 'minor' ) ) {
 879                                 $this->minoredit = true;
 880                         }
 881                 }
 882
 883                 $this->oldid = $request->getInt( 'oldid' );
 884
 885                 $this->bot = $request->getBool( 'bot', true );
 886                 $this->nosummary = $request->getBool( 'nosummary' );
 887
 888                 // May be overridden by revision.
 889                 $this->contentModel = $request->getText( 'model', $this->contentModel );
 890                 // May be overridden by revision.
 891                 $this->contentFormat = $request->getText( 'format', $this->contentFormat );
 892
 893                 if ( !ContentHandler::getForModelID( $this->contentModel )
 894                         ->isSupportedFormat( $this->contentFormat )
 895                 ) {
 896                         throw new ErrorPageError(
 897                                 'editpage-notsupportedcontentformat-title',
 898                                 'editpage-notsupportedcontentformat-text',
 899                                 array( $this->contentFormat, ContentHandler::getLocalizedName( $this->contentModel ) )
 900                         );
 901                 }
 902
 903                 /**
 904                  * @todo Check if the desired model is allowed in this namespace, and if
 905                  *   a transition from the page's current model to the new model is
 906                  *   allowed.
 907                  */
 908
 909                 $this->live = $request->getCheck( 'live' );
 910                 $this->editintro = $request->getText( 'editintro',
 911                         // Custom edit intro for new sections
 912                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 913
 914                 // Allow extensions to modify form data
 915                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 916
 917                 wfProfileOut( __METHOD__ );
 918         }
 919
 920         /**
 921          * Subpage overridable method for extracting the page content data from the
 922          * posted form to be placed in $this->textbox1, if using customized input
 923          * this method should be overridden and return the page text that will be used
 924          * for saving, preview parsing and so on...
 925          *
 926          * @param WebRequest $request
 927          */
 928         protected function importContentFormData( &$request ) {
 929                 return; // Don't do anything, EditPage already extracted wpTextbox1
 930         }
 931
 932         /**
 933          * Initialise form fields in the object
 934          * Called on the first invocation, e.g. when a user clicks an edit link
 935          * @return bool If the requested section is valid
 936          */
 937         function initialiseForm() {
 938                 global $wgUser;
 939                 $this->edittime = $this->mArticle->getTimestamp();
 940
 941                 $content = $this->getContentObject( false ); #TODO: track content object?!
 942                 if ( $content === false ) {
 943                         return false;
 944                 }
 945                 $this->textbox1 = $this->toEditText( $content );
 946
 947                 // activate checkboxes if user wants them to be always active
 948                 # Sort out the "watch" checkbox
 949                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 950                         # Watch all edits
 951                         $this->watchthis = true;
 952                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 953                         # Watch creations
 954                         $this->watchthis = true;
 955                 } elseif ( $wgUser->isWatched( $this->mTitle ) ) {
 956                         # Already watched
 957                         $this->watchthis = true;
 958                 }
 959                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 960                         $this->minoredit = true;
 961                 }
 962                 if ( $this->textbox1 === false ) {
 963                         return false;
 964                 }
 965                 return true;
 966         }
 967
 968         /**
 969          * @param Content|null $def_content The default value to return
 970          *
 971          * @return Content|null Content on success, $def_content for invalid sections
 972          *
 973          * @since 1.21
 974          */
 975         protected function getContentObject( $def_content = null ) {
 976                 global $wgOut, $wgRequest, $wgUser, $wgContLang;
 977
 978                 wfProfileIn( __METHOD__ );
 979
 980                 $content = false;
 981
 982                 // For message page not locally set, use the i18n message.
 983                 // For other non-existent articles, use preload text if any.
 984                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 985                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 986                                 # If this is a system message, get the default text.
 987                                 $msg = $this->mTitle->getDefaultMessageText();
 988
 989                                 $content = $this->toEditContent( $msg );
 990                         }
 991                         if ( $content === false ) {
 992                                 # If requested, preload some text.
 993                                 $preload = $wgRequest->getVal( 'preload',
 994                                         // Custom preload text for new sections
 995                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 996                                 $params = $wgRequest->getArray( 'preloadparams', array() );
 997
 998                                 $content = $this->getPreloadedContent( $preload, $params );
 999                         }
1000                 // For existing pages, get text based on "undo" or section parameters.
1001                 } else {
1002                         if ( $this->section != '' ) {
1003                                 // Get section edit text (returns $def_text for invalid sections)
1004                                 $orig = $this->getOriginalContent( $wgUser );
1005                                 $content = $orig ? $orig->getSection( $this->section ) : null;
1006
1007                                 if ( !$content ) {
1008                                         $content = $def_content;
1009                                 }
1010                         } else {
1011                                 $undoafter = $wgRequest->getInt( 'undoafter' );
1012                                 $undo = $wgRequest->getInt( 'undo' );
1013
1014                                 if ( $undo > 0 && $undoafter > 0 ) {
1015
1016                                         $undorev = Revision::newFromId( $undo );
1017                                         $oldrev = Revision::newFromId( $undoafter );
1018
1019                                         # Sanity check, make sure it's the right page,
1020                                         # the revisions exist and they were not deleted.
1021                                         # Otherwise, $content will be left as-is.
1022                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
1023                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
1024                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
1025
1026                                                 $content = $this->mArticle->getUndoContent( $undorev, $oldrev );
1027
1028                                                 if ( $content === false ) {
1029                                                         # Warn the user that something went wrong
1030                                                         $undoMsg = 'failure';
1031                                                 } else {
1032                                                         $oldContent = $this->mArticle->getPage()->getContent( Revision::RAW );
1033                                                         $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
1034                                                         $newContent = $content->preSaveTransform( $this->mTitle, $wgUser, $popts );
1035
1036                                                         if ( $newContent->equals( $oldContent ) ) {
1037                                                                 # Tell the user that the undo results in no change,
1038                                                                 # i.e. the revisions were already undone.
1039                                                                 $undoMsg = 'nochange';
1040                                                                 $content = false;
1041                                                         } else {
1042                                                                 # Inform the user of our success and set an automatic edit summary
1043                                                                 $undoMsg = 'success';
1044
1045                                                                 # If we just undid one rev, use an autosummary
1046                                                                 $firstrev = $oldrev->getNext();
1047                                                                 if ( $firstrev && $firstrev->getId() == $undo ) {
1048                                                                         $userText = $undorev->getUserText();
1049                                                                         if ( $userText === '' ) {
1050                                                                                 $undoSummary = wfMessage(
1051                                                                                         'undo-summary-username-hidden',
1052                                                                                         $undo
1053                                                                                 )->inContentLanguage()->text();
1054                                                                         } else {
1055                                                                                 $undoSummary = wfMessage(
1056                                                                                         'undo-summary',
1057                                                                                         $undo,
1058                                                                                         $userText
1059                                                                                 )->inContentLanguage()->text();
1060                                                                         }
1061                                                                         if ( $this->summary === '' ) {
1062                                                                                 $this->summary = $undoSummary;
1063                                                                         } else {
1064                                                                                 $this->summary = $undoSummary . wfMessage( 'colon-separator' )
1065                                                                                         ->inContentLanguage()->text() . $this->summary;
1066                                                                         }
1067                                                                         $this->undidRev = $undo;
1068                                                                 }
1069                                                                 $this->formtype = 'diff';
1070                                                         }
1071                                                 }
1072                                         } else {
1073                                                 // Failed basic sanity checks.
1074                                                 // Older revisions may have been removed since the link
1075                                                 // was created, or we may simply have got bogus input.
1076                                                 $undoMsg = 'norev';
1077                                         }
1078
1079                                         // Messages: undo-success, undo-failure, undo-norev, undo-nochange
1080                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
1081                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
1082                                                 wfMessage( 'undo-' . $undoMsg )->plain() . '</div>', true, /* interface */true );
1083                                 }
1084
1085                                 if ( $content === false ) {
1086                                         $content = $this->getOriginalContent( $wgUser );
1087                                 }
1088                         }
1089                 }
1090
1091                 wfProfileOut( __METHOD__ );
1092                 return $content;
1093         }
1094
1095         /**
1096          * Get the content of the wanted revision, without section extraction.
1097          *
1098          * The result of this function can be used to compare user's input with
1099          * section replaced in its context (using WikiPage::replaceSection())
1100          * to the original text of the edit.
1101          *
1102          * This differs from Article::getContent() that when a missing revision is
1103          * encountered the result will be null and not the
1104          * 'missing-revision' message.
1105          *
1106          * @since 1.19
1107          * @param User $user The user to get the revision for
1108          * @return Content|null
1109          */
1110         private function getOriginalContent( User $user ) {
1111                 if ( $this->section == 'new' ) {
1112                         return $this->getCurrentContent();
1113                 }
1114                 $revision = $this->mArticle->getRevisionFetched();
1115                 if ( $revision === null ) {
1116                         if ( !$this->contentModel ) {
1117                                 $this->contentModel = $this->getTitle()->getContentModel();
1118                         }
1119                         $handler = ContentHandler::getForModelID( $this->contentModel );
1120
1121                         return $handler->makeEmptyContent();
1122                 }
1123                 $content = $revision->getContent( Revision::FOR_THIS_USER, $user );
1124                 return $content;
1125         }
1126
1127         /**
1128          * Get the current content of the page. This is basically similar to
1129          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
1130          * content object is returned instead of null.
1131          *
1132          * @since 1.21
1133          * @return Content
1134          */
1135         protected function getCurrentContent() {
1136                 $rev = $this->mArticle->getRevision();
1137                 $content = $rev ? $rev->getContent( Revision::RAW ) : null;
1138
1139                 if ( $content === false || $content === null ) {
1140                         if ( !$this->contentModel ) {
1141                                 $this->contentModel = $this->getTitle()->getContentModel();
1142                         }
1143                         $handler = ContentHandler::getForModelID( $this->contentModel );
1144
1145                         return $handler->makeEmptyContent();
1146                 } else {
1147                         # nasty side-effect, but needed for consistency
1148                         $this->contentModel = $rev->getContentModel();
1149                         $this->contentFormat = $rev->getContentFormat();
1150
1151                         return $content;
1152                 }
1153         }
1154
1155         /**
1156          * Use this method before edit() to preload some content into the edit box
1157          *
1158          * @param Content $content
1159          *
1160          * @since 1.21
1161          */
1162         public function setPreloadedContent( Content $content ) {
1163                 $this->mPreloadContent = $content;
1164         }
1165
1166         /**
1167          * Get the contents to be preloaded into the box, either set by
1168          * an earlier setPreloadText() or by loading the given page.
1169          *
1170          * @param string $preload Representing the title to preload from.
1171          * @param array $params Parameters to use (interface-message style) in the preloaded text
1172          *
1173          * @return Content
1174          *
1175          * @since 1.21
1176          */
1177         protected function getPreloadedContent( $preload, $params = array() ) {
1178                 global $wgUser;
1179
1180                 if ( !empty( $this->mPreloadContent ) ) {
1181                         return $this->mPreloadContent;
1182                 }
1183
1184                 $handler = ContentHandler::getForTitle( $this->getTitle() );
1185
1186                 if ( $preload === '' ) {
1187                         return $handler->makeEmptyContent();
1188                 }
1189
1190                 $title = Title::newFromText( $preload );
1191                 # Check for existence to avoid getting MediaWiki:Noarticletext
1192                 if ( $title === null || !$title->exists() || !$title->userCan( 'read', $wgUser ) ) {
1193                         //TODO: somehow show a warning to the user!
1194                         return $handler->makeEmptyContent();
1195                 }
1196
1197                 $page = WikiPage::factory( $title );
1198                 if ( $page->isRedirect() ) {
1199                         $title = $page->getRedirectTarget();
1200                         # Same as before
1201                         if ( $title === null || !$title->exists() || !$title->userCan( 'read', $wgUser ) ) {
1202                                 //TODO: somehow show a warning to the user!
1203                                 return $handler->makeEmptyContent();
1204                         }
1205                         $page = WikiPage::factory( $title );
1206                 }
1207
1208                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1209                 $content = $page->getContent( Revision::RAW );
1210
1211                 if ( !$content ) {
1212                         //TODO: somehow show a warning to the user!
1213                         return $handler->makeEmptyContent();
1214                 }
1215
1216                 if ( $content->getModel() !== $handler->getModelID() ) {
1217                         $converted = $content->convert( $handler->getModelID() );
1218
1219                         if ( !$converted ) {
1220                                 //TODO: somehow show a warning to the user!
1221                                 wfDebug( "Attempt to preload incompatible content: "
1222                                                 . "can't convert " . $content->getModel()
1223                                                 . " to " . $handler->getModelID() );
1224
1225                                 return $handler->makeEmptyContent();
1226                         }
1227
1228                         $content = $converted;
1229                 }
1230
1231                 return $content->preloadTransform( $title, $parserOptions, $params );
1232         }
1233
1234         /**
1235          * Make sure the form isn't faking a user's credentials.
1236          *
1237          * @param WebRequest $request
1238          * @return bool
1239          * @private
1240          */
1241         function tokenOk( &$request ) {
1242                 global $wgUser;
1243                 $token = $request->getVal( 'wpEditToken' );
1244                 $this->mTokenOk = $wgUser->matchEditToken( $token );
1245                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
1246                 return $this->mTokenOk;
1247         }
1248
1249         /**
1250          * Sets post-edit cookie indicating the user just saved a particular revision.
1251          *
1252          * This uses a temporary cookie for each revision ID so separate saves will never
1253          * interfere with each other.
1254          *
1255          * The cookie is deleted in the mediawiki.action.view.postEdit JS module after
1256          * the redirect.  It must be clearable by JavaScript code, so it must not be
1257          * marked HttpOnly. The JavaScript code converts the cookie to a wgPostEdit config
1258          * variable.
1259          *
1260          * If the variable were set on the server, it would be cached, which is unwanted
1261          * since the post-edit state should only apply to the load right after the save.
1262          *
1263          * @param int $statusValue The status value (to check for new article status)
1264          */
1265         protected function setPostEditCookie( $statusValue ) {
1266                 $revisionId = $this->mArticle->getLatest();
1267                 $postEditKey = self::POST_EDIT_COOKIE_KEY_PREFIX . $revisionId;
1268
1269                 $val = 'saved';
1270                 if ( $statusValue == self::AS_SUCCESS_NEW_ARTICLE ) {
1271                         $val = 'created';
1272                 } elseif ( $this->oldid ) {
1273                         $val = 'restored';
1274                 }
1275
1276                 $response = RequestContext::getMain()->getRequest()->response();
1277                 $response->setcookie( $postEditKey, $val, time() + self::POST_EDIT_COOKIE_DURATION, array(
1278                         'httpOnly' => false,
1279                 ) );
1280         }
1281
1282         /**
1283          * Attempt submission
1284          * @throws UserBlockedError|ReadOnlyError|ThrottledError|PermissionsError
1285          * @return bool False if output is done, true if the rest of the form should be displayed
1286          */
1287         public function attemptSave() {
1288                 global $wgUser;
1289
1290                 $resultDetails = false;
1291                 # Allow bots to exempt some edits from bot flagging
1292                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
1293                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1294
1295                 return $this->handleStatus( $status, $resultDetails );
1296         }
1297
1298         /**
1299          * Handle status, such as after attempt save
1300          *
1301          * @param Status $status
1302          * @param array|bool $resultDetails
1303          *
1304          * @throws ErrorPageError
1305          * @return bool False, if output is done, true if rest of the form should be displayed
1306          */
1307         private function handleStatus( Status $status, $resultDetails ) {
1308                 global $wgUser, $wgOut;
1309
1310                 /**
1311                  * @todo FIXME: once the interface for internalAttemptSave() is made
1312                  *   nicer, this should use the message in $status
1313                  */
1314                 if ( $status->value == self::AS_SUCCESS_UPDATE
1315                         || $status->value == self::AS_SUCCESS_NEW_ARTICLE
1316                 ) {
1317                         $this->didSave = true;
1318                         if ( !$resultDetails['nullEdit'] ) {
1319                                 $this->setPostEditCookie( $status->value );
1320                         }
1321                 }
1322
1323                 switch ( $status->value ) {
1324                         case self::AS_HOOK_ERROR_EXPECTED:
1325                         case self::AS_CONTENT_TOO_BIG:
1326                         case self::AS_ARTICLE_WAS_DELETED:
1327                         case self::AS_CONFLICT_DETECTED:
1328                         case self::AS_SUMMARY_NEEDED:
1329                         case self::AS_TEXTBOX_EMPTY:
1330                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1331                         case self::AS_END:
1332                         case self::AS_BLANK_ARTICLE:
1333                                 return true;
1334
1335                         case self::AS_HOOK_ERROR:
1336                                 return false;
1337
1338                         case self::AS_PARSE_ERROR:
1339                                 $wgOut->addWikiText( '<div class="error">' . $status->getWikiText() . '</div>' );
1340                                 return true;
1341
1342                         case self::AS_SUCCESS_NEW_ARTICLE:
1343                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1344                                 $anchor = isset( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1345                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1346                                 return false;
1347
1348                         case self::AS_SUCCESS_UPDATE:
1349                                 $extraQuery = '';
1350                                 $sectionanchor = $resultDetails['sectionanchor'];
1351
1352                                 // Give extensions a chance to modify URL query on update
1353                                 wfRunHooks(
1354                                         'ArticleUpdateBeforeRedirect',
1355                                         array( $this->mArticle, &$sectionanchor, &$extraQuery )
1356                                 );
1357
1358                                 if ( $resultDetails['redirect'] ) {
1359                                         if ( $extraQuery == '' ) {
1360                                                 $extraQuery = 'redirect=no';
1361                                         } else {
1362                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1363                                         }
1364                                 }
1365                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1366                                 return false;
1367
1368                         case self::AS_SPAM_ERROR:
1369                                 $this->spamPageWithContent( $resultDetails['spam'] );
1370                                 return false;
1371
1372                         case self::AS_BLOCKED_PAGE_FOR_USER:
1373                                 throw new UserBlockedError( $wgUser->getBlock() );
1374
1375                         case self::AS_IMAGE_REDIRECT_ANON:
1376                         case self::AS_IMAGE_REDIRECT_LOGGED:
1377                                 throw new PermissionsError( 'upload' );
1378
1379                         case self::AS_READ_ONLY_PAGE_ANON:
1380                         case self::AS_READ_ONLY_PAGE_LOGGED:
1381                                 throw new PermissionsError( 'edit' );
1382
1383                         case self::AS_READ_ONLY_PAGE:
1384                                 throw new ReadOnlyError;
1385
1386                         case self::AS_RATE_LIMITED:
1387                                 throw new ThrottledError();
1388
1389                         case self::AS_NO_CREATE_PERMISSION:
1390                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1391                                 throw new PermissionsError( $permission );
1392
1393                         case self::AS_NO_CHANGE_CONTENT_MODEL:
1394                                 throw new PermissionsError( 'editcontentmodel' );
1395
1396                         default:
1397                                 // We don't recognize $status->value. The only way that can happen
1398                                 // is if an extension hook aborted from inside ArticleSave.
1399                                 // Render the status object into $this->hookError
1400                                 // FIXME this sucks, we should just use the Status object throughout
1401                                 $this->hookError = '<div class="error">' . $status->getWikitext() .
1402                                         '</div>';
1403                                 return true;
1404                 }
1405         }
1406
1407         /**
1408          * Run hooks that can filter edits just before they get saved.
1409          *
1410          * @param Content $content The Content to filter.
1411          * @param Status $status For reporting the outcome to the caller
1412          * @param User $user The user performing the edit
1413          *
1414          * @return bool
1415          */
1416         protected function runPostMergeFilters( Content $content, Status $status, User $user ) {
1417                 // Run old style post-section-merge edit filter
1418                 if ( !ContentHandler::runLegacyHooks( 'EditFilterMerged',
1419                         array( $this, $content, &$this->hookError, $this->summary ) ) ) {
1420
1421                         # Error messages etc. could be handled within the hook...
1422                         $status->fatal( 'hookaborted' );
1423                         $status->value = self::AS_HOOK_ERROR;
1424                         return false;
1425                 } elseif ( $this->hookError != '' ) {
1426                         # ...or the hook could be expecting us to produce an error
1427                         $status->fatal( 'hookaborted' );
1428                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1429                         return false;
1430                 }
1431
1432                 // Run new style post-section-merge edit filter
1433                 if ( !wfRunHooks( 'EditFilterMergedContent',
1434                         array( $this->mArticle->getContext(), $content, $status, $this->summary,
1435                                 $user, $this->minoredit ) ) ) {
1436
1437                         # Error messages etc. could be handled within the hook...
1438                         // XXX: $status->value may already be something informative...
1439                         $this->hookError = $status->getWikiText();
1440                         $status->fatal( 'hookaborted' );
1441                         $status->value = self::AS_HOOK_ERROR;
1442                         return false;
1443                 } elseif ( !$status->isOK() ) {
1444                         # ...or the hook could be expecting us to produce an error
1445                         // FIXME this sucks, we should just use the Status object throughout
1446                         $this->hookError = $status->getWikiText();
1447                         $status->fatal( 'hookaborted' );
1448                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1449                         return false;
1450                 }
1451
1452                 return true;
1453         }
1454
1455         /**
1456          * Return the summary to be used for a new section.
1457          *
1458          * @param string $sectionanchor Set to the section anchor text
1459          * @return string
1460          */
1461         private function newSectionSummary( &$sectionanchor = null ) {
1462                 global $wgParser;
1463
1464                 if ( $this->sectiontitle !== '' ) {
1465                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1466                         // If no edit summary was specified, create one automatically from the section
1467                         // title and have it link to the new section. Otherwise, respect the summary as
1468                         // passed.
1469                         if ( $this->summary === '' ) {
1470                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1471                                 return wfMessage( 'newsectionsummary' )
1472                                         ->rawParams( $cleanSectionTitle )->inContentLanguage()->text();
1473                         }
1474                 } elseif ( $this->summary !== '' ) {
1475                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1476                         # This is a new section, so create a link to the new section
1477                         # in the revision summary.
1478                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1479                         return wfMessage( 'newsectionsummary' )
1480                                 ->rawParams( $cleanSummary )->inContentLanguage()->text();
1481                 }
1482                 return $this->summary;
1483         }
1484
1485         /**
1486          * Attempt submission (no UI)
1487          *
1488          * @param array $result Array to add statuses to, currently with the
1489          *   possible keys:
1490          *   - spam (string): Spam string from content if any spam is detected by
1491          *     matchSpamRegex.
1492          *   - sectionanchor (string): Section anchor for a section save.
1493          *   - nullEdit (boolean): Set if doEditContent is OK.  True if null edit,
1494          *     false otherwise.
1495          *   - redirect (bool): Set if doEditContent is OK. True if resulting
1496          *     revision is a redirect.
1497          * @param bool $bot True if edit is being made under the bot right.
1498          *
1499          * @return Status Status object, possibly with a message, but always with
1500          *   one of the AS_* constants in $status->value,
1501          *
1502          * @todo FIXME: This interface is TERRIBLE, but hard to get rid of due to
1503          *   various error display idiosyncrasies. There are also lots of cases
1504          *   where error metadata is set in the object and retrieved later instead
1505          *   of being returned, e.g. AS_CONTENT_TOO_BIG and
1506          *   AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some
1507          * time.
1508          */
1509         function internalAttemptSave( &$result, $bot = false ) {
1510                 global $wgUser, $wgRequest, $wgParser, $wgMaxArticleSize;
1511
1512                 $status = Status::newGood();
1513
1514                 wfProfileIn( __METHOD__ );
1515                 wfProfileIn( __METHOD__ . '-checks' );
1516
1517                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1518                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1519                         $status->fatal( 'hookaborted' );
1520                         $status->value = self::AS_HOOK_ERROR;
1521                         wfProfileOut( __METHOD__ . '-checks' );
1522                         wfProfileOut( __METHOD__ );
1523                         return $status;
1524                 }
1525
1526                 $spam = $wgRequest->getText( 'wpAntispam' );
1527                 if ( $spam !== '' ) {
1528                         wfDebugLog(
1529                                 'SimpleAntiSpam',
1530                                 $wgUser->getName() .
1531                                 ' editing "' .
1532                                 $this->mTitle->getPrefixedText() .
1533                                 '" submitted bogus field "' .
1534                                 $spam .
1535                                 '"'
1536                         );
1537                         $status->fatal( 'spamprotectionmatch', false );
1538                         $status->value = self::AS_SPAM_ERROR;
1539                         wfProfileOut( __METHOD__ . '-checks' );
1540                         wfProfileOut( __METHOD__ );
1541                         return $status;
1542                 }
1543
1544                 try {
1545                         # Construct Content object
1546                         $textbox_content = $this->toEditContent( $this->textbox1 );
1547                 } catch ( MWContentSerializationException $ex ) {
1548                         $status->fatal(
1549                                 'content-failed-to-parse',
1550                                 $this->contentModel,
1551                                 $this->contentFormat,
1552                                 $ex->getMessage()
1553                         );
1554                         $status->value = self::AS_PARSE_ERROR;
1555                         wfProfileOut( __METHOD__ . '-checks' );
1556                         wfProfileOut( __METHOD__ );
1557                         return $status;
1558                 }
1559
1560                 # Check image redirect
1561                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1562                         $textbox_content->isRedirect() &&
1563                         !$wgUser->isAllowed( 'upload' )
1564                 ) {
1565                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1566                                 $status->setResult( false, $code );
1567
1568                                 wfProfileOut( __METHOD__ . '-checks' );
1569                                 wfProfileOut( __METHOD__ );
1570
1571                                 return $status;
1572                 }
1573
1574                 # Check for spam
1575                 $match = self::matchSummarySpamRegex( $this->summary );
1576                 if ( $match === false && $this->section == 'new' ) {
1577                         # $wgSpamRegex is enforced on this new heading/summary because, unlike
1578                         # regular summaries, it is added to the actual wikitext.
1579                         if ( $this->sectiontitle !== '' ) {
1580                                 # This branch is taken when the API is used with the 'sectiontitle' parameter.
1581                                 $match = self::matchSpamRegex( $this->sectiontitle );
1582                         } else {
1583                                 # This branch is taken when the "Add Topic" user interface is used, or the API
1584                                 # is used with the 'summary' parameter.
1585                                 $match = self::matchSpamRegex( $this->summary );
1586                         }
1587                 }
1588                 if ( $match === false ) {
1589                         $match = self::matchSpamRegex( $this->textbox1 );
1590                 }
1591                 if ( $match !== false ) {
1592                         $result['spam'] = $match;
1593                         $ip = $wgRequest->getIP();
1594                         $pdbk = $this->mTitle->getPrefixedDBkey();
1595                         $match = str_replace( "\n", '', $match );
1596                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1597                         $status->fatal( 'spamprotectionmatch', $match );
1598                         $status->value = self::AS_SPAM_ERROR;
1599                         wfProfileOut( __METHOD__ . '-checks' );
1600                         wfProfileOut( __METHOD__ );
1601                         return $status;
1602                 }
1603                 if ( !wfRunHooks(
1604                         'EditFilter',
1605                         array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) )
1606                 ) {
1607                         # Error messages etc. could be handled within the hook...
1608                         $status->fatal( 'hookaborted' );
1609                         $status->value = self::AS_HOOK_ERROR;
1610                         wfProfileOut( __METHOD__ . '-checks' );
1611                         wfProfileOut( __METHOD__ );
1612                         return $status;
1613                 } elseif ( $this->hookError != '' ) {
1614                         # ...or the hook could be expecting us to produce an error
1615                         $status->fatal( 'hookaborted' );
1616                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1617                         wfProfileOut( __METHOD__ . '-checks' );
1618                         wfProfileOut( __METHOD__ );
1619                         return $status;
1620                 }
1621
1622                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1623                         // Auto-block user's IP if the account was "hard" blocked
1624                         $wgUser->spreadAnyEditBlock();
1625                         # Check block state against master, thus 'false'.
1626                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1627                         wfProfileOut( __METHOD__ . '-checks' );
1628                         wfProfileOut( __METHOD__ );
1629                         return $status;
1630                 }
1631
1632                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1633                 if ( $this->kblength > $wgMaxArticleSize ) {
1634                         // Error will be displayed by showEditForm()
1635                         $this->tooBig = true;
1636                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1637                         wfProfileOut( __METHOD__ . '-checks' );
1638                         wfProfileOut( __METHOD__ );
1639                         return $status;
1640                 }
1641
1642                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1643                         if ( $wgUser->isAnon() ) {
1644                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1645                                 wfProfileOut( __METHOD__ . '-checks' );
1646                                 wfProfileOut( __METHOD__ );
1647                                 return $status;
1648                         } else {
1649                                 $status->fatal( 'readonlytext' );
1650                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1651                                 wfProfileOut( __METHOD__ . '-checks' );
1652                                 wfProfileOut( __METHOD__ );
1653                                 return $status;
1654                         }
1655                 }
1656
1657                 if ( $this->contentModel !== $this->mTitle->getContentModel()
1658                         && !$wgUser->isAllowed( 'editcontentmodel' )
1659                 ) {
1660                         $status->setResult( false, self::AS_NO_CHANGE_CONTENT_MODEL );
1661                         wfProfileOut( __METHOD__ . '-checks' );
1662                         wfProfileOut( __METHOD__ );
1663                         return $status;
1664                 }
1665
1666                 if ( wfReadOnly() ) {
1667                         $status->fatal( 'readonlytext' );
1668                         $status->value = self::AS_READ_ONLY_PAGE;
1669                         wfProfileOut( __METHOD__ . '-checks' );
1670                         wfProfileOut( __METHOD__ );
1671                         return $status;
1672                 }
1673                 if ( $wgUser->pingLimiter() || $wgUser->pingLimiter( 'linkpurge', 0 ) ) {
1674                         $status->fatal( 'actionthrottledtext' );
1675                         $status->value = self::AS_RATE_LIMITED;
1676                         wfProfileOut( __METHOD__ . '-checks' );
1677                         wfProfileOut( __METHOD__ );
1678                         return $status;
1679                 }
1680
1681                 # If the article has been deleted while editing, don't save it without
1682                 # confirmation
1683                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1684                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1685                         wfProfileOut( __METHOD__ . '-checks' );
1686                         wfProfileOut( __METHOD__ );
1687                         return $status;
1688                 }
1689
1690                 wfProfileOut( __METHOD__ . '-checks' );
1691
1692                 # Load the page data from the master. If anything changes in the meantime,
1693                 # we detect it by using page_latest like a token in a 1 try compare-and-swap.
1694                 $this->mArticle->loadPageData( 'fromdbmaster' );
1695                 $new = !$this->mArticle->exists();
1696
1697                 if ( $new ) {
1698                         // Late check for create permission, just in case *PARANOIA*
1699                         if ( !$this->mTitle->userCan( 'create', $wgUser ) ) {
1700                                 $status->fatal( 'nocreatetext' );
1701                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1702                                 wfDebug( __METHOD__ . ": no create permission\n" );
1703                                 wfProfileOut( __METHOD__ );
1704                                 return $status;
1705                         }
1706
1707                         // Don't save a new page if it's blank or if it's a MediaWiki:
1708                         // message with content equivalent to default (allow empty pages
1709                         // in this case to disable messages, see bug 50124)
1710                         $defaultMessageText = $this->mTitle->getDefaultMessageText();
1711                         if ( $this->mTitle->getNamespace() === NS_MEDIAWIKI && $defaultMessageText !== false ) {
1712                                 $defaultText = $defaultMessageText;
1713                         } else {
1714                                 $defaultText = '';
1715                         }
1716
1717                         if ( !$this->allowBlankArticle && $this->textbox1 === $defaultText ) {
1718                                 $this->blankArticle = true;
1719                                 $status->fatal( 'blankarticle' );
1720                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1721                                 wfProfileOut( __METHOD__ );
1722                                 return $status;
1723                         }
1724
1725                         if ( !$this->runPostMergeFilters( $textbox_content, $status, $wgUser ) ) {
1726                                 wfProfileOut( __METHOD__ );
1727                                 return $status;
1728                         }
1729
1730                         $content = $textbox_content;
1731
1732                         $result['sectionanchor'] = '';
1733                         if ( $this->section == 'new' ) {
1734                                 if ( $this->sectiontitle !== '' ) {
1735                                         // Insert the section title above the content.
1736                                         $content = $content->addSectionHeader( $this->sectiontitle );
1737                                 } elseif ( $this->summary !== '' ) {
1738                                         // Insert the section title above the content.
1739                                         $content = $content->addSectionHeader( $this->summary );
1740                                 }
1741                                 $this->summary = $this->newSectionSummary( $result['sectionanchor'] );
1742                         }
1743
1744                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1745
1746                 } else { # not $new
1747
1748                         # Article exists. Check for edit conflict.
1749
1750                         $this->mArticle->clear(); # Force reload of dates, etc.
1751                         $timestamp = $this->mArticle->getTimestamp();
1752
1753                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1754
1755                         if ( $timestamp != $this->edittime ) {
1756                                 $this->isConflict = true;
1757                                 if ( $this->section == 'new' ) {
1758                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1759                                                 $this->mArticle->getComment() == $this->newSectionSummary()
1760                                         ) {
1761                                                 // Probably a duplicate submission of a new comment.
1762                                                 // This can happen when squid resends a request after
1763                                                 // a timeout but the first one actually went through.
1764                                                 wfDebug( __METHOD__
1765                                                         . ": duplicate new section submission; trigger edit conflict!\n" );
1766                                         } else {
1767                                                 // New comment; suppress conflict.
1768                                                 $this->isConflict = false;
1769                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1770                                         }
1771                                 } elseif ( $this->section == ''
1772                                         && Revision::userWasLastToEdit(
1773                                                 DB_MASTER, $this->mTitle->getArticleID(),
1774                                                 $wgUser->getId(), $this->edittime
1775                                         )
1776                                 ) {
1777                                         # Suppress edit conflict with self, except for section edits where merging is required.
1778                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1779                                         $this->isConflict = false;
1780                                 }
1781                         }
1782
1783                         // If sectiontitle is set, use it, otherwise use the summary as the section title.
1784                         if ( $this->sectiontitle !== '' ) {
1785                                 $sectionTitle = $this->sectiontitle;
1786                         } else {
1787                                 $sectionTitle = $this->summary;
1788                         }
1789
1790                         $content = null;
1791
1792                         if ( $this->isConflict ) {
1793                                 wfDebug( __METHOD__
1794                                         . ": conflict! getting section '{$this->section}' for time '{$this->edittime}'"
1795                                         . " (article time '{$timestamp}')\n" );
1796
1797                                 $content = $this->mArticle->replaceSectionContent(
1798                                         $this->section,
1799                                         $textbox_content,
1800                                         $sectionTitle,
1801                                         $this->edittime
1802                                 );
1803                         } else {
1804                                 wfDebug( __METHOD__ . ": getting section '{$this->section}'\n" );
1805                                 $content = $this->mArticle->replaceSectionContent(
1806                                         $this->section,
1807                                         $textbox_content,
1808                                         $sectionTitle
1809                                 );
1810                         }
1811
1812                         if ( is_null( $content ) ) {
1813                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1814                                 $this->isConflict = true;
1815                                 $content = $textbox_content; // do not try to merge here!
1816                         } elseif ( $this->isConflict ) {
1817                                 # Attempt merge
1818                                 if ( $this->mergeChangesIntoContent( $content ) ) {
1819                                         // Successful merge! Maybe we should tell the user the good news?
1820                                         $this->isConflict = false;
1821                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1822                                 } else {
1823                                         $this->section = '';
1824                                         $this->textbox1 = ContentHandler::getContentText( $content );
1825                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1826                                 }
1827                         }
1828
1829                         if ( $this->isConflict ) {
1830                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1831                                 wfProfileOut( __METHOD__ );
1832                                 return $status;
1833                         }
1834
1835                         if ( !$this->runPostMergeFilters( $content, $status, $wgUser ) ) {
1836                                 wfProfileOut( __METHOD__ );
1837                                 return $status;
1838                         }
1839
1840                         if ( $this->section == 'new' ) {
1841                                 // Handle the user preference to force summaries here
1842                                 if ( !$this->allowBlankSummary && trim( $this->summary ) == '' ) {
1843                                         $this->missingSummary = true;
1844                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1845                                         $status->value = self::AS_SUMMARY_NEEDED;
1846                                         wfProfileOut( __METHOD__ );
1847                                         return $status;
1848                                 }
1849
1850                                 // Do not allow the user to post an empty comment
1851                                 if ( $this->textbox1 == '' ) {
1852                                         $this->missingComment = true;
1853                                         $status->fatal( 'missingcommenttext' );
1854                                         $status->value = self::AS_TEXTBOX_EMPTY;
1855                                         wfProfileOut( __METHOD__ );
1856                                         return $status;
1857                                 }
1858                         } elseif ( !$this->allowBlankSummary
1859                                 && !$content->equals( $this->getOriginalContent( $wgUser ) )
1860                                 && !$content->isRedirect()
1861                                 && md5( $this->summary ) == $this->autoSumm
1862                         ) {
1863                                 $this->missingSummary = true;
1864                                 $status->fatal( 'missingsummary' );
1865                                 $status->value = self::AS_SUMMARY_NEEDED;
1866                                 wfProfileOut( __METHOD__ );
1867                                 return $status;
1868                         }
1869
1870                         # All's well
1871                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1872                         $sectionanchor = '';
1873                         if ( $this->section == 'new' ) {
1874                                 $this->summary = $this->newSectionSummary( $sectionanchor );
1875                         } elseif ( $this->section != '' ) {
1876                                 # Try to get a section anchor from the section source, redirect
1877                                 # to edited section if header found.
1878                                 # XXX: Might be better to integrate this into Article::replaceSection
1879                                 # for duplicate heading checking and maybe parsing.
1880                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1881                                 # We can't deal with anchors, includes, html etc in the header for now,
1882                                 # headline would need to be parsed to improve this.
1883                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1884                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1885                                 }
1886                         }
1887                         $result['sectionanchor'] = $sectionanchor;
1888                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1889
1890                         // Save errors may fall down to the edit form, but we've now
1891                         // merged the section into full text. Clear the section field
1892                         // so that later submission of conflict forms won't try to
1893                         // replace that into a duplicated mess.
1894                         $this->textbox1 = $this->toEditText( $content );
1895                         $this->section = '';
1896
1897                         $status->value = self::AS_SUCCESS_UPDATE;
1898                 }
1899
1900                 // Check for length errors again now that the section is merged in
1901                 $this->kblength = (int)( strlen( $this->toEditText( $content ) ) / 1024 );
1902                 if ( $this->kblength > $wgMaxArticleSize ) {
1903                         $this->tooBig = true;
1904                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1905                         wfProfileOut( __METHOD__ );
1906                         return $status;
1907                 }
1908
1909                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1910                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1911                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1912                         ( $bot ? EDIT_FORCE_BOT : 0 );
1913
1914                 $doEditStatus = $this->mArticle->doEditContent(
1915                         $content,
1916                         $this->summary,
1917                         $flags,
1918                         false,
1919                         null,
1920                         $content->getDefaultFormat()
1921                 );
1922
1923                 if ( !$doEditStatus->isOK() ) {
1924                         // Failure from doEdit()
1925                         // Show the edit conflict page for certain recognized errors from doEdit(),
1926                         // but don't show it for errors from extension hooks
1927                         $errors = $doEditStatus->getErrorsArray();
1928                         if ( in_array( $errors[0][0],
1929                                         array( 'edit-gone-missing', 'edit-conflict', 'edit-already-exists' ) )
1930                         ) {
1931                                 $this->isConflict = true;
1932                                 // Destroys data doEdit() put in $status->value but who cares
1933                                 $doEditStatus->value = self::AS_END;
1934                         }
1935                         wfProfileOut( __METHOD__ );
1936                         return $doEditStatus;
1937                 }
1938
1939                 $result['nullEdit'] = $doEditStatus->hasMessage( 'edit-no-change' );
1940                 if ( $result['nullEdit'] ) {
1941                         // We don't know if it was a null edit until now, so increment here
1942                         $wgUser->pingLimiter( 'linkpurge' );
1943                 }
1944                 $result['redirect'] = $content->isRedirect();
1945                 $this->updateWatchlist();
1946                 wfProfileOut( __METHOD__ );
1947                 return $status;
1948         }
1949
1950         /**
1951          * Register the change of watch status
1952          */
1953         protected function updateWatchlist() {
1954                 global $wgUser;
1955
1956                 if ( $wgUser->isLoggedIn()
1957                         && $this->watchthis != $wgUser->isWatched( $this->mTitle, WatchedItem::IGNORE_USER_RIGHTS )
1958                 ) {
1959                         $fname = __METHOD__;
1960                         $title = $this->mTitle;
1961                         $watch = $this->watchthis;
1962
1963                         // Do this in its own transaction to reduce contention...
1964                         $dbw = wfGetDB( DB_MASTER );
1965                         $dbw->onTransactionIdle( function () use ( $dbw, $title, $watch, $wgUser, $fname ) {
1966                                 WatchAction::doWatchOrUnwatch( $watch, $title, $wgUser );
1967                         } );
1968                 }
1969         }
1970
1971         /**
1972          * Attempts to do 3-way merge of edit content with a base revision
1973          * and current content, in case of edit conflict, in whichever way appropriate
1974          * for the content type.
1975          *
1976          * @since 1.21
1977          *
1978          * @param Content $editContent
1979          *
1980          * @return bool
1981          */
1982         private function mergeChangesIntoContent( &$editContent ) {
1983                 wfProfileIn( __METHOD__ );
1984
1985                 $db = wfGetDB( DB_MASTER );
1986
1987                 // This is the revision the editor started from
1988                 $baseRevision = $this->getBaseRevision();
1989                 $baseContent = $baseRevision ? $baseRevision->getContent() : null;
1990
1991                 if ( is_null( $baseContent ) ) {
1992                         wfProfileOut( __METHOD__ );
1993                         return false;
1994                 }
1995
1996                 // The current state, we want to merge updates into it
1997                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1998                 $currentContent = $currentRevision ? $currentRevision->getContent() : null;
1999
2000                 if ( is_null( $currentContent ) ) {
2001                         wfProfileOut( __METHOD__ );
2002                         return false;
2003                 }
2004
2005                 $handler = ContentHandler::getForModelID( $baseContent->getModel() );
2006
2007                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
2008
2009                 if ( $result ) {
2010                         $editContent = $result;
2011                         wfProfileOut( __METHOD__ );
2012                         return true;
2013                 }
2014
2015                 wfProfileOut( __METHOD__ );
2016                 return false;
2017         }
2018
2019         /**
2020          * @return Revision
2021          */
2022         function getBaseRevision() {
2023                 if ( !$this->mBaseRevision ) {
2024                         $db = wfGetDB( DB_MASTER );
2025                         $this->mBaseRevision = Revision::loadFromTimestamp(
2026                                 $db, $this->mTitle, $this->edittime );
2027                 }
2028                 return $this->mBaseRevision;
2029         }
2030
2031         /**
2032          * Check given input text against $wgSpamRegex, and return the text of the first match.
2033          *
2034          * @param string $text
2035          *
2036          * @return string|bool Matching string or false
2037          */
2038         public static function matchSpamRegex( $text ) {
2039                 global $wgSpamRegex;
2040                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
2041                 $regexes = (array)$wgSpamRegex;
2042                 return self::matchSpamRegexInternal( $text, $regexes );
2043         }
2044
2045         /**
2046          * Check given input text against $wgSummarySpamRegex, and return the text of the first match.
2047          *
2048          * @param string $text
2049          *
2050          * @return string|bool Matching string or false
2051          */
2052         public static function matchSummarySpamRegex( $text ) {
2053                 global $wgSummarySpamRegex;
2054                 $regexes = (array)$wgSummarySpamRegex;
2055                 return self::matchSpamRegexInternal( $text, $regexes );
2056         }
2057
2058         /**
2059          * @param string $text
2060          * @param array $regexes
2061          * @return bool|string
2062          */
2063         protected static function matchSpamRegexInternal( $text, $regexes ) {
2064                 foreach ( $regexes as $regex ) {
2065                         $matches = array();
2066                         if ( preg_match( $regex, $text, $matches ) ) {
2067                                 return $matches[0];
2068                         }
2069                 }
2070                 return false;
2071         }
2072
2073         function setHeaders() {
2074                 global $wgOut, $wgUser;
2075
2076                 $wgOut->addModules( 'mediawiki.action.edit' );
2077                 $wgOut->addModuleStyles( 'mediawiki.action.edit.styles' );
2078
2079                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
2080                         $wgOut->addModules( 'mediawiki.action.edit.preview' );
2081                 }
2082
2083                 if ( $wgUser->getOption( 'useeditwarning', false ) ) {
2084                         $wgOut->addModules( 'mediawiki.action.edit.editWarning' );
2085                 }
2086
2087                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2088
2089                 # Enabled article-related sidebar, toplinks, etc.
2090                 $wgOut->setArticleRelated( true );
2091
2092                 $contextTitle = $this->getContextTitle();
2093                 if ( $this->isConflict ) {
2094                         $msg = 'editconflict';
2095                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
2096                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
2097                 } else {
2098                         $msg = $contextTitle->exists()
2099                                 || ( $contextTitle->getNamespace() == NS_MEDIAWIKI
2100                                         && $contextTitle->getDefaultMessageText() !== false
2101                                 )
2102                                 ? 'editing'
2103                                 : 'creating';
2104                 }
2105
2106                 # Use the title defined by DISPLAYTITLE magic word when present
2107                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
2108                 if ( $displayTitle === false ) {
2109                         $displayTitle = $contextTitle->getPrefixedText();
2110                 }
2111                 $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
2112         }
2113
2114         /**
2115          * Show all applicable editing introductions
2116          */
2117         protected function showIntro() {
2118                 global $wgOut, $wgUser;
2119                 if ( $this->suppressIntro ) {
2120                         return;
2121                 }
2122
2123                 $namespace = $this->mTitle->getNamespace();
2124
2125                 if ( $namespace == NS_MEDIAWIKI ) {
2126                         # Show a warning if editing an interface message
2127                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
2128                         # If this is a default message (but not css or js),
2129                         # show a hint that it is translatable on translatewiki.net
2130                         if ( !$this->mTitle->hasContentModel( CONTENT_MODEL_CSS )
2131                                 && !$this->mTitle->hasContentModel( CONTENT_MODEL_JAVASCRIPT )
2132                         ) {
2133                                 $defaultMessageText = $this->mTitle->getDefaultMessageText();
2134                                 if ( $defaultMessageText !== false ) {
2135                                         $wgOut->wrapWikiMsg( "<div class='mw-translateinterface'>\n$1\n</div>",
2136                                                 'translateinterface' );
2137                                 }
2138                         }
2139                 } elseif ( $namespace == NS_FILE ) {
2140                         # Show a hint to shared repo
2141                         $file = wfFindFile( $this->mTitle );
2142                         if ( $file && !$file->isLocal() ) {
2143                                 $descUrl = $file->getDescriptionUrl();
2144                                 # there must be a description url to show a hint to shared repo
2145                                 if ( $descUrl ) {
2146                                         if ( !$this->mTitle->exists() ) {
2147                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array(
2148                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
2149                                                 ) );
2150                                         } else {
2151                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
2152                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
2153                                                 ) );
2154                                         }
2155                                 }
2156                         }
2157                 }
2158
2159                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
2160                 # Show log extract when the user is currently blocked
2161                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
2162                         $parts = explode( '/', $this->mTitle->getText(), 2 );
2163                         $username = $parts[0];
2164                         $user = User::newFromName( $username, false /* allow IP users*/ );
2165                         $ip = User::isIP( $username );
2166                         $block = Block::newFromTarget( $user, $user );
2167                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
2168                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
2169                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
2170                         } elseif ( !is_null( $block ) && $block->getType() != Block::TYPE_AUTO ) {
2171                                 # Show log extract if the user is currently blocked
2172                                 LogEventsList::showLogExtract(
2173                                         $wgOut,
2174                                         'block',
2175                                         MWNamespace::getCanonicalName( NS_USER ) . ':' . $block->getTarget(),
2176                                         '',
2177                                         array(
2178                                                 'lim' => 1,
2179                                                 'showIfEmpty' => false,
2180                                                 'msgKey' => array(
2181                                                         'blocked-notice-logextract',
2182                                                         $user->getName() # Support GENDER in notice
2183                                                 )
2184                                         )
2185                                 );
2186                         }
2187                 }
2188                 # Try to add a custom edit intro, or use the standard one if this is not possible.
2189                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
2190                         $helpLink = wfExpandUrl( Skin::makeInternalOrExternalUrl(
2191                                 wfMessage( 'helppage' )->inContentLanguage()->text()
2192                         ) );
2193                         if ( $wgUser->isLoggedIn() ) {
2194                                 $wgOut->wrapWikiMsg(
2195                                         // Suppress the external link icon, consider the help url an internal one
2196                                         "<div class=\"mw-newarticletext plainlinks\">\n$1\n</div>",
2197                                         array(
2198                                                 'newarticletext',
2199                                                 $helpLink
2200                                         )
2201                                 );
2202                         } else {
2203                                 $wgOut->wrapWikiMsg(
2204                                         // Suppress the external link icon, consider the help url an internal one
2205                                         "<div class=\"mw-newarticletextanon plainlinks\">\n$1\n</div>",
2206                                         array(
2207                                                 'newarticletextanon',
2208                                                 $helpLink
2209                                         )
2210                                 );
2211                         }
2212                 }
2213                 # Give a notice if the user is editing a deleted/moved page...
2214                 if ( !$this->mTitle->exists() ) {
2215                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
2216                                 '',
2217                                 array(
2218                                         'lim' => 10,
2219                                         'conds' => array( "log_action != 'revision'" ),
2220                                         'showIfEmpty' => false,
2221                                         'msgKey' => array( 'recreate-moveddeleted-warn' )
2222                                 )
2223                         );
2224                 }
2225         }
2226
2227         /**
2228          * Attempt to show a custom editing introduction, if supplied
2229          *
2230          * @return bool
2231          */
2232         protected function showCustomIntro() {
2233                 if ( $this->editintro ) {
2234                         $title = Title::newFromText( $this->editintro );
2235                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
2236                                 global $wgOut;
2237                                 // Added using template syntax, to take <noinclude>'s into account.
2238                                 $wgOut->addWikiTextTitleTidy(
2239                                         '<div class="mw-editintro">{{:' . $title->getFullText() . '}}</div>',
2240                                         $this->mTitle
2241                                 );
2242                                 return true;
2243                         }
2244                 }
2245                 return false;
2246         }
2247
2248         /**
2249          * Gets an editable textual representation of $content.
2250          * The textual representation can be turned by into a Content object by the
2251          * toEditContent() method.
2252          *
2253          * If $content is null or false or a string, $content is returned unchanged.
2254          *
2255          * If the given Content object is not of a type that can be edited using
2256          * the text base EditPage, an exception will be raised. Set
2257          * $this->allowNonTextContent to true to allow editing of non-textual
2258          * content.
2259          *
2260          * @param Content|null|bool|string $content
2261          * @return string The editable text form of the content.
2262          *
2263          * @throws MWException If $content is not an instance of TextContent and
2264          *   $this->allowNonTextContent is not true.
2265          */
2266         protected function toEditText( $content ) {
2267                 if ( $content === null || $content === false || is_string( $content ) ) {
2268                         return $content;
2269                 }
2270
2271                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2272                         throw new MWException( 'This content model is not supported: '
2273                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2274                 }
2275
2276                 return $content->serialize( $this->contentFormat );
2277         }
2278
2279         /**
2280          * Turns the given text into a Content object by unserializing it.
2281          *
2282          * If the resulting Content object is not of a type that can be edited using
2283          * the text base EditPage, an exception will be raised. Set
2284          * $this->allowNonTextContent to true to allow editing of non-textual
2285          * content.
2286          *
2287          * @param string|null|bool $text Text to unserialize
2288          * @return Content The content object created from $text. If $text was false
2289          *   or null, false resp. null will be  returned instead.
2290          *
2291          * @throws MWException If unserializing the text results in a Content
2292          *   object that is not an instance of TextContent and
2293          *   $this->allowNonTextContent is not true.
2294          */
2295         protected function toEditContent( $text ) {
2296                 if ( $text === false || $text === null ) {
2297                         return $text;
2298                 }
2299
2300                 $content = ContentHandler::makeContent( $text, $this->getTitle(),
2301                         $this->contentModel, $this->contentFormat );
2302
2303                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2304                         throw new MWException( 'This content model is not supported: '
2305                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2306                 }
2307
2308                 return $content;
2309         }
2310
2311         /**
2312          * Send the edit form and related headers to $wgOut
2313          * @param callable|null $formCallback That takes an OutputPage parameter; will be called
2314          *     during form output near the top, for captchas and the like.
2315          */
2316         function showEditForm( $formCallback = null ) {
2317                 global $wgOut, $wgUser;
2318
2319                 wfProfileIn( __METHOD__ );
2320
2321                 # need to parse the preview early so that we know which templates are used,
2322                 # otherwise users with "show preview after edit box" will get a blank list
2323                 # we parse this near the beginning so that setHeaders can do the title
2324                 # setting work instead of leaving it in getPreviewText
2325                 $previewOutput = '';
2326                 if ( $this->formtype == 'preview' ) {
2327                         $previewOutput = $this->getPreviewText();
2328                 }
2329
2330                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this, &$wgOut ) );
2331
2332                 $this->setHeaders();
2333
2334                 if ( $this->showHeader() === false ) {
2335                         wfProfileOut( __METHOD__ );
2336                         return;
2337                 }
2338
2339                 $wgOut->addHTML( $this->editFormPageTop );
2340
2341                 if ( $wgUser->getOption( 'previewontop' ) ) {
2342                         $this->displayPreviewArea( $previewOutput, true );
2343                 }
2344
2345                 $wgOut->addHTML( $this->editFormTextTop );
2346
2347                 $showToolbar = true;
2348                 if ( $this->wasDeletedSinceLastEdit() ) {
2349                         if ( $this->formtype == 'save' ) {
2350                                 // Hide the toolbar and edit area, user can click preview to get it back
2351                                 // Add an confirmation checkbox and explanation.
2352                                 $showToolbar = false;
2353                         } else {
2354                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
2355                                         'deletedwhileediting' );
2356                         }
2357                 }
2358
2359                 // @todo add EditForm plugin interface and use it here!
2360                 //       search for textarea1 and textares2, and allow EditForm to override all uses.
2361                 $wgOut->addHTML( Html::openElement(
2362                         'form',
2363                         array(
2364                                 'id' => self::EDITFORM_ID,
2365                                 'name' => self::EDITFORM_ID,
2366                                 'method' => 'post',
2367                                 'action' => $this->getActionURL( $this->getContextTitle() ),
2368                                 'enctype' => 'multipart/form-data'
2369                         )
2370                 ) );
2371
2372                 if ( is_callable( $formCallback ) ) {
2373                         call_user_func_array( $formCallback, array( &$wgOut ) );
2374                 }
2375
2376                 // Add an empty field to trip up spambots
2377                 $wgOut->addHTML(
2378                         Xml::openElement( 'div', array( 'id' => 'antispam-container', 'style' => 'display: none;' ) )
2379                         . Html::rawElement(
2380                                 'label',
2381                                 array( 'for' => 'wpAntiSpam' ),
2382                                 wfMessage( 'simpleantispam-label' )->parse()
2383                         )
2384                         . Xml::element(
2385                                 'input',
2386                                 array(
2387                                         'type' => 'text',
2388                                         'name' => 'wpAntispam',
2389                                         'id' => 'wpAntispam',
2390                                         'value' => ''
2391                                 )
2392                         )
2393                         . Xml::closeElement( 'div' )
2394                 );
2395
2396                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
2397
2398                 // Put these up at the top to ensure they aren't lost on early form submission
2399                 $this->showFormBeforeText();
2400
2401                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
2402                         $username = $this->lastDelete->user_name;
2403                         $comment = $this->lastDelete->log_comment;
2404
2405                         // It is better to not parse the comment at all than to have templates expanded in the middle
2406                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
2407                         $key = $comment === ''
2408                                 ? 'confirmrecreate-noreason'
2409                                 : 'confirmrecreate';
2410                         $wgOut->addHTML(
2411                                 '<div class="mw-confirm-recreate">' .
2412                                         wfMessage( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
2413                                 Xml::checkLabel( wfMessage( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
2414                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
2415                                 ) .
2416                                 '</div>'
2417                         );
2418                 }
2419
2420                 # When the summary is hidden, also hide them on preview/show changes
2421                 if ( $this->nosummary ) {
2422                         $wgOut->addHTML( Html::hidden( 'nosummary', true ) );
2423                 }
2424
2425                 # If a blank edit summary was previously provided, and the appropriate
2426                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
2427                 # user being bounced back more than once in the event that a summary
2428                 # is not required.
2429                 #####
2430                 # For a bit more sophisticated detection of blank summaries, hash the
2431                 # automatic one and pass that in the hidden field wpAutoSummary.
2432                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
2433                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
2434                 }
2435
2436                 if ( $this->undidRev ) {
2437                         $wgOut->addHTML( Html::hidden( 'wpUndidRevision', $this->undidRev ) );
2438                 }
2439
2440                 if ( $this->hasPresetSummary ) {
2441                         // If a summary has been preset using &summary= we don't want to prompt for
2442                         // a different summary. Only prompt for a summary if the summary is blanked.
2443                         // (Bug 17416)
2444                         $this->autoSumm = md5( '' );
2445                 }
2446
2447                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
2448                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
2449
2450                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
2451
2452                 $wgOut->addHTML( Html::hidden( 'format', $this->contentFormat ) );
2453                 $wgOut->addHTML( Html::hidden( 'model', $this->contentModel ) );
2454
2455                 if ( $this->section == 'new' ) {
2456                         $this->showSummaryInput( true, $this->summary );
2457                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
2458                 }
2459
2460                 $wgOut->addHTML( $this->editFormTextBeforeContent );
2461
2462                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
2463                         $wgOut->addHTML( EditPage::getEditToolbar() );
2464                 }
2465
2466                 if ( $this->blankArticle ) {
2467                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankArticle', true ) );
2468                 }
2469
2470                 if ( $this->isConflict ) {
2471                         // In an edit conflict bypass the overridable content form method
2472                         // and fallback to the raw wpTextbox1 since editconflicts can't be
2473                         // resolved between page source edits and custom ui edits using the
2474                         // custom edit ui.
2475                         $this->textbox2 = $this->textbox1;
2476
2477                         $content = $this->getCurrentContent();
2478                         $this->textbox1 = $this->toEditText( $content );
2479
2480                         $this->showTextbox1();
2481                 } else {
2482                         $this->showContentForm();
2483                 }
2484
2485                 $wgOut->addHTML( $this->editFormTextAfterContent );
2486
2487                 $this->showStandardInputs();
2488
2489                 $this->showFormAfterText();
2490
2491                 $this->showTosSummary();
2492
2493                 $this->showEditTools();
2494
2495                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
2496
2497                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
2498                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
2499
2500                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
2501                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
2502
2503                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'limitreport' ),
2504                         self::getPreviewLimitReport( $this->mParserOutput ) ) );
2505
2506                 $wgOut->addModules( 'mediawiki.action.edit.collapsibleFooter' );
2507
2508                 if ( $this->isConflict ) {
2509                         try {
2510                                 $this->showConflict();
2511                         } catch ( MWContentSerializationException $ex ) {
2512                                 // this can't really happen, but be nice if it does.
2513                                 $msg = wfMessage(
2514                                         'content-failed-to-parse',
2515                                         $this->contentModel,
2516                                         $this->contentFormat,
2517                                         $ex->getMessage()
2518                                 );
2519                                 $wgOut->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
2520                         }
2521                 }
2522
2523                 // Marker for detecting truncated form data.  This must be the last
2524                 // parameter sent in order to be of use, so do not move me.
2525                 $wgOut->addHTML( Html::hidden( 'wpUltimateParam', true ) );
2526                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
2527
2528                 if ( !$wgUser->getOption( 'previewontop' ) ) {
2529                         $this->displayPreviewArea( $previewOutput, false );
2530                 }
2531
2532                 wfProfileOut( __METHOD__ );
2533         }
2534
2535         /**
2536          * Extract the section title from current section text, if any.
2537          *
2538          * @param string $text
2539          * @return string|bool String or false
2540          */
2541         public static function extractSectionTitle( $text ) {
2542                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
2543                 if ( !empty( $matches[2] ) ) {
2544                         global $wgParser;
2545                         return $wgParser->stripSectionName( trim( $matches[2] ) );
2546                 } else {
2547                         return false;
2548                 }
2549         }
2550
2551         /**
2552          * @return bool
2553          */
2554         protected function showHeader() {
2555                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
2556                 global $wgAllowUserCss, $wgAllowUserJs;
2557
2558                 if ( $this->mTitle->isTalkPage() ) {
2559                         $wgOut->addWikiMsg( 'talkpagetext' );
2560                 }
2561
2562                 // Add edit notices
2563                 $wgOut->addHTML( implode( "\n", $this->mTitle->getEditNotices( $this->oldid ) ) );
2564
2565                 if ( $this->isConflict ) {
2566                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
2567                         $this->edittime = $this->mArticle->getTimestamp();
2568                 } else {
2569                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
2570                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
2571                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
2572                                 // Someone is welcome to try refactoring though
2573                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2574                                 return false;
2575                         }
2576
2577                         if ( $this->section != '' && $this->section != 'new' ) {
2578                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2579                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 ); //FIXME: use Content object
2580                                         if ( $sectionTitle !== false ) {
2581                                                 $this->summary = "/* $sectionTitle */ ";
2582                                         }
2583                                 }
2584                         }
2585
2586                         if ( $this->missingComment ) {
2587                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2588                         }
2589
2590                         if ( $this->missingSummary && $this->section != 'new' ) {
2591                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
2592                         }
2593
2594                         if ( $this->missingSummary && $this->section == 'new' ) {
2595                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
2596                         }
2597
2598                         if ( $this->blankArticle ) {
2599                                 $wgOut->wrapWikiMsg( "<div id='mw-blankarticle'>\n$1\n</div>", 'blankarticle' );
2600                         }
2601
2602                         if ( $this->hookError !== '' ) {
2603                                 $wgOut->addWikiText( $this->hookError );
2604                         }
2605
2606                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2607                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
2608                         }
2609
2610                         if ( $this->section != 'new' ) {
2611                                 $revision = $this->mArticle->getRevisionFetched();
2612                                 if ( $revision ) {
2613                                         // Let sysop know that this will make private content public if saved
2614
2615                                         if ( !$revision->userCan( Revision::DELETED_TEXT, $wgUser ) ) {
2616                                                 $wgOut->wrapWikiMsg(
2617                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
2618                                                         'rev-deleted-text-permission'
2619                                                 );
2620                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2621                                                 $wgOut->wrapWikiMsg(
2622                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
2623                                                         'rev-deleted-text-view'
2624                                                 );
2625                                         }
2626
2627                                         if ( !$revision->isCurrent() ) {
2628                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
2629                                                 $wgOut->addWikiMsg( 'editingold' );
2630                                         }
2631                                 } elseif ( $this->mTitle->exists() ) {
2632                                         // Something went wrong
2633
2634                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2635                                                 array( 'missing-revision', $this->oldid ) );
2636                                 }
2637                         }
2638                 }
2639
2640                 if ( wfReadOnly() ) {
2641                         $wgOut->wrapWikiMsg(
2642                                 "<div id=\"mw-read-only-warning\">\n$1\n</div>",
2643                                 array( 'readonlywarning', wfReadOnlyReason() )
2644                         );
2645                 } elseif ( $wgUser->isAnon() ) {
2646                         if ( $this->formtype != 'preview' ) {
2647                                 $wgOut->wrapWikiMsg(
2648                                         "<div id='mw-anon-edit-warning'>\n$1\n</div>",
2649                                         array( 'anoneditwarning',
2650                                                 // Log-in link
2651                                                 '{{fullurl:Special:UserLogin|returnto={{FULLPAGENAMEE}}}}',
2652                                                 // Sign-up link
2653                                                 '{{fullurl:Special:UserLogin/signup|returnto={{FULLPAGENAMEE}}}}' )
2654                                 );
2655                         } else {
2656                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>",
2657                                         'anonpreviewwarning'
2658                                 );
2659                         }
2660                 } else {
2661                         if ( $this->isCssJsSubpage ) {
2662                                 # Check the skin exists
2663                                 if ( $this->isWrongCaseCssJsPage ) {
2664                                         $wgOut->wrapWikiMsg(
2665                                                 "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>",
2666                                                 array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() )
2667                                         );
2668                                 }
2669                                 if ( $this->formtype !== 'preview' ) {
2670                                         if ( $this->isCssSubpage && $wgAllowUserCss ) {
2671                                                 $wgOut->wrapWikiMsg(
2672                                                         "<div id='mw-usercssyoucanpreview'>\n$1\n</div>",
2673                                                         array( 'usercssyoucanpreview' )
2674                                                 );
2675                                         }
2676
2677                                         if ( $this->isJsSubpage && $wgAllowUserJs ) {
2678                                                 $wgOut->wrapWikiMsg(
2679                                                         "<div id='mw-userjsyoucanpreview'>\n$1\n</div>",
2680                                                         array( 'userjsyoucanpreview' )
2681                                                 );
2682                                         }
2683                                 }
2684                         }
2685                 }
2686
2687                 if ( $this->mTitle->isProtected( 'edit' ) &&
2688                         MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== array( '' )
2689                 ) {
2690                         # Is the title semi-protected?
2691                         if ( $this->mTitle->isSemiProtected() ) {
2692                                 $noticeMsg = 'semiprotectedpagewarning';
2693                         } else {
2694                                 # Then it must be protected based on static groups (regular)
2695                                 $noticeMsg = 'protectedpagewarning';
2696                         }
2697                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2698                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2699                 }
2700                 if ( $this->mTitle->isCascadeProtected() ) {
2701                         # Is this page under cascading protection from some source pages?
2702                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
2703                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2704                         $cascadeSourcesCount = count( $cascadeSources );
2705                         if ( $cascadeSourcesCount > 0 ) {
2706                                 # Explain, and list the titles responsible
2707                                 foreach ( $cascadeSources as $page ) {
2708                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2709                                 }
2710                         }
2711                         $notice .= '</div>';
2712                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2713                 }
2714                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2715                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2716                                 array( 'lim' => 1,
2717                                         'showIfEmpty' => false,
2718                                         'msgKey' => array( 'titleprotectedwarning' ),
2719                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2720                 }
2721
2722                 if ( $this->kblength === false ) {
2723                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2724                 }
2725
2726                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2727                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2728                                 array(
2729                                         'longpageerror',
2730                                         $wgLang->formatNum( $this->kblength ),
2731                                         $wgLang->formatNum( $wgMaxArticleSize )
2732                                 )
2733                         );
2734                 } else {
2735                         if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
2736                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2737                                         array(
2738                                                 'longpage-hint',
2739                                                 $wgLang->formatSize( strlen( $this->textbox1 ) ),
2740                                                 strlen( $this->textbox1 )
2741                                         )
2742                                 );
2743                         }
2744                 }
2745                 # Add header copyright warning
2746                 $this->showHeaderCopyrightWarning();
2747
2748                 return true;
2749         }
2750
2751         /**
2752          * Standard summary input and label (wgSummary), abstracted so EditPage
2753          * subclasses may reorganize the form.
2754          * Note that you do not need to worry about the label's for=, it will be
2755          * inferred by the id given to the input. You can remove them both by
2756          * passing array( 'id' => false ) to $userInputAttrs.
2757          *
2758          * @param string $summary The value of the summary input
2759          * @param string $labelText The html to place inside the label
2760          * @param array $inputAttrs Array of attrs to use on the input
2761          * @param array $spanLabelAttrs Array of attrs to use on the span inside the label
2762          *
2763          * @return array An array in the format array( $label, $input )
2764          */
2765         function getSummaryInput( $summary = "", $labelText = null,
2766                 $inputAttrs = null, $spanLabelAttrs = null
2767         ) {
2768                 // Note: the maxlength is overridden in JS to 255 and to make it use UTF-8 bytes, not characters.
2769                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2770                         'id' => 'wpSummary',
2771                         'maxlength' => '200',
2772                         'tabindex' => '1',
2773                         'size' => 60,
2774                         'spellcheck' => 'true',
2775                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2776
2777                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2778                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2779                         'id' => "wpSummaryLabel"
2780                 );
2781
2782                 $label = null;
2783                 if ( $labelText ) {
2784                         $label = Xml::tags(
2785                                 'label',
2786                                 $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null,
2787                                 $labelText
2788                         );
2789                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2790                 }
2791
2792                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2793
2794                 return array( $label, $input );
2795         }
2796
2797         /**
2798          * @param bool $isSubjectPreview True if this is the section subject/title
2799          *   up top, or false if this is the comment summary
2800          *   down below the textarea
2801          * @param string $summary The text of the summary to display
2802          */
2803         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2804                 global $wgOut, $wgContLang;
2805                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2806                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2807                 if ( $isSubjectPreview ) {
2808                         if ( $this->nosummary ) {
2809                                 return;
2810                         }
2811                 } else {
2812                         if ( !$this->mShowSummaryField ) {
2813                                 return;
2814                         }
2815                 }
2816                 $summary = $wgContLang->recodeForEdit( $summary );
2817                 $labelText = wfMessage( $isSubjectPreview ? 'subject' : 'summary' )->parse();
2818                 list( $label, $input ) = $this->getSummaryInput(
2819                         $summary,
2820                         $labelText,
2821                         array( 'class' => $summaryClass ),
2822                         array()
2823                 );
2824                 $wgOut->addHTML( "{$label} {$input}" );
2825         }
2826
2827         /**
2828          * @param bool $isSubjectPreview True if this is the section subject/title
2829          *   up top, or false if this is the comment summary
2830          *   down below the textarea
2831          * @param string $summary The text of the summary to display
2832          * @return string
2833          */
2834         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2835                 // avoid spaces in preview, gets always trimmed on save
2836                 $summary = trim( $summary );
2837                 if ( !$summary || ( !$this->preview && !$this->diff ) ) {
2838                         return "";
2839                 }
2840
2841                 global $wgParser;
2842
2843                 if ( $isSubjectPreview ) {
2844                         $summary = wfMessage( 'newsectionsummary' )->rawParams( $wgParser->stripSectionName( $summary ) )
2845                                 ->inContentLanguage()->text();
2846                 }
2847
2848                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2849
2850                 $summary = wfMessage( $message )->parse()
2851                         . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2852                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2853         }
2854
2855         protected function showFormBeforeText() {
2856                 global $wgOut;
2857                 $section = htmlspecialchars( $this->section );
2858                 $wgOut->addHTML( <<<HTML
2859 <input type='hidden' value="{$section}" name="wpSection" />
2860 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2861 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2862 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2863
2864 HTML
2865                 );
2866                 if ( !$this->checkUnicodeCompliantBrowser() ) {
2867                         $wgOut->addHTML( Html::hidden( 'safemode', '1' ) );
2868                 }
2869         }
2870
2871         protected function showFormAfterText() {
2872                 global $wgOut, $wgUser;
2873                 /**
2874                  * To make it harder for someone to slip a user a page
2875                  * which submits an edit form to the wiki without their
2876                  * knowledge, a random token is associated with the login
2877                  * session. If it's not passed back with the submission,
2878                  * we won't save the page, or render user JavaScript and
2879                  * CSS previews.
2880                  *
2881                  * For anon editors, who may not have a session, we just
2882                  * include the constant suffix to prevent editing from
2883                  * broken text-mangling proxies.
2884                  */
2885                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2886         }
2887
2888         /**
2889          * Subpage overridable method for printing the form for page content editing
2890          * By default this simply outputs wpTextbox1
2891          * Subclasses can override this to provide a custom UI for editing;
2892          * be it a form, or simply wpTextbox1 with a modified content that will be
2893          * reverse modified when extracted from the post data.
2894          * Note that this is basically the inverse for importContentFormData
2895          */
2896         protected function showContentForm() {
2897                 $this->showTextbox1();
2898         }
2899
2900         /**
2901          * Method to output wpTextbox1
2902          * The $textoverride method can be used by subclasses overriding showContentForm
2903          * to pass back to this method.
2904          *
2905          * @param array $customAttribs Array of html attributes to use in the textarea
2906          * @param string $textoverride Optional text to override $this->textarea1 with
2907          */
2908         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2909                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2910                         $attribs = array( 'style' => 'display:none;' );
2911                 } else {
2912                         $classes = array(); // Textarea CSS
2913                         if ( $this->mTitle->isProtected( 'edit' ) &&
2914                                 MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== array( '' )
2915                         ) {
2916                                 # Is the title semi-protected?
2917                                 if ( $this->mTitle->isSemiProtected() ) {
2918                                         $classes[] = 'mw-textarea-sprotected';
2919                                 } else {
2920                                         # Then it must be protected based on static groups (regular)
2921                                         $classes[] = 'mw-textarea-protected';
2922                                 }
2923                                 # Is the title cascade-protected?
2924                                 if ( $this->mTitle->isCascadeProtected() ) {
2925                                         $classes[] = 'mw-textarea-cprotected';
2926                                 }
2927                         }
2928
2929                         $attribs = array( 'tabindex' => 1 );
2930
2931                         if ( is_array( $customAttribs ) ) {
2932                                 $attribs += $customAttribs;
2933                         }
2934
2935                         if ( count( $classes ) ) {
2936                                 if ( isset( $attribs['class'] ) ) {
2937                                         $classes[] = $attribs['class'];
2938                                 }
2939                                 $attribs['class'] = implode( ' ', $classes );
2940                         }
2941                 }
2942
2943                 $this->showTextbox(
2944                         $textoverride !== null ? $textoverride : $this->textbox1,
2945                         'wpTextbox1',
2946                         $attribs
2947                 );
2948         }
2949
2950         protected function showTextbox2() {
2951                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2952         }
2953
2954         protected function showTextbox( $text, $name, $customAttribs = array() ) {
2955                 global $wgOut, $wgUser;
2956
2957                 $wikitext = $this->safeUnicodeOutput( $text );
2958                 if ( strval( $wikitext ) !== '' ) {
2959                         // Ensure there's a newline at the end, otherwise adding lines
2960                         // is awkward.
2961                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2962                         // mode will show an extra newline. A bit annoying.
2963                         $wikitext .= "\n";
2964                 }
2965
2966                 $attribs = $customAttribs + array(
2967                         'accesskey' => ',',
2968                         'id' => $name,
2969                         'cols' => $wgUser->getIntOption( 'cols' ),
2970                         'rows' => $wgUser->getIntOption( 'rows' ),
2971                         // Avoid PHP notices when appending preferences
2972                         // (appending allows customAttribs['style'] to still work).
2973                         'style' => ''
2974                 );
2975
2976                 $pageLang = $this->mTitle->getPageLanguage();
2977                 $attribs['lang'] = $pageLang->getHtmlCode();
2978                 $attribs['dir'] = $pageLang->getDir();
2979
2980                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2981         }
2982
2983         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2984                 global $wgOut;
2985                 $classes = array();
2986                 if ( $isOnTop ) {
2987                         $classes[] = 'ontop';
2988                 }
2989
2990                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2991
2992                 if ( $this->formtype != 'preview' ) {
2993                         $attribs['style'] = 'display: none;';
2994                 }
2995
2996                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2997
2998                 if ( $this->formtype == 'preview' ) {
2999                         $this->showPreview( $previewOutput );
3000                 }
3001
3002                 $wgOut->addHTML( '</div>' );
3003
3004                 if ( $this->formtype == 'diff' ) {
3005                         try {
3006                                 $this->showDiff();
3007                         } catch ( MWContentSerializationException $ex ) {
3008                                 $msg = wfMessage(
3009                                         'content-failed-to-parse',
3010                                         $this->contentModel,
3011                                         $this->contentFormat,
3012                                         $ex->getMessage()
3013                                 );
3014                                 $wgOut->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
3015                         }
3016                 }
3017         }
3018
3019         /**
3020          * Append preview output to $wgOut.
3021          * Includes category rendering if this is a category page.
3022          *
3023          * @param string $text The HTML to be output for the preview.
3024          */
3025         protected function showPreview( $text ) {
3026                 global $wgOut;
3027                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
3028                         $this->mArticle->openShowCategory();
3029                 }
3030                 # This hook seems slightly odd here, but makes things more
3031                 # consistent for extensions.
3032                 wfRunHooks( 'OutputPageBeforeHTML', array( &$wgOut, &$text ) );
3033                 $wgOut->addHTML( $text );
3034                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
3035                         $this->mArticle->closeShowCategory();
3036                 }
3037         }
3038
3039         /**
3040          * Get a diff between the current contents of the edit box and the
3041          * version of the page we're editing from.
3042          *
3043          * If this is a section edit, we'll replace the section as for final
3044          * save and then make a comparison.
3045          */
3046         function showDiff() {
3047                 global $wgUser, $wgContLang, $wgOut;
3048
3049                 $oldtitlemsg = 'currentrev';
3050                 # if message does not exist, show diff against the preloaded default
3051                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
3052                         $oldtext = $this->mTitle->getDefaultMessageText();
3053                         if ( $oldtext !== false ) {
3054                                 $oldtitlemsg = 'defaultmessagetext';
3055                                 $oldContent = $this->toEditContent( $oldtext );
3056                         } else {
3057                                 $oldContent = null;
3058                         }
3059                 } else {
3060                         $oldContent = $this->getCurrentContent();
3061                 }
3062
3063                 $textboxContent = $this->toEditContent( $this->textbox1 );
3064
3065                 $newContent = $this->mArticle->replaceSectionContent(
3066                                                         $this->section, $textboxContent,
3067                                                         $this->summary, $this->edittime );
3068
3069                 if ( $newContent ) {
3070                         ContentHandler::runLegacyHooks( 'EditPageGetDiffText', array( $this, &$newContent ) );
3071                         wfRunHooks( 'EditPageGetDiffContent', array( $this, &$newContent ) );
3072
3073                         $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
3074                         $newContent = $newContent->preSaveTransform( $this->mTitle, $wgUser, $popts );
3075                 }
3076
3077                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
3078                         $oldtitle = wfMessage( $oldtitlemsg )->parse();
3079                         $newtitle = wfMessage( 'yourtext' )->parse();
3080
3081                         if ( !$oldContent ) {
3082                                 $oldContent = $newContent->getContentHandler()->makeEmptyContent();
3083                         }
3084
3085                         if ( !$newContent ) {
3086                                 $newContent = $oldContent->getContentHandler()->makeEmptyContent();
3087                         }
3088
3089                         $de = $oldContent->getContentHandler()->createDifferenceEngine( $this->mArticle->getContext() );
3090                         $de->setContent( $oldContent, $newContent );
3091
3092                         $difftext = $de->getDiff( $oldtitle, $newtitle );
3093                         $de->showDiffStyle();
3094                 } else {
3095                         $difftext = '';
3096                 }
3097
3098                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
3099         }
3100
3101         /**
3102          * Show the header copyright warning.
3103          */
3104         protected function showHeaderCopyrightWarning() {
3105                 $msg = 'editpage-head-copy-warn';
3106                 if ( !wfMessage( $msg )->isDisabled() ) {
3107                         global $wgOut;
3108                         $wgOut->wrapWikiMsg( "<div class='editpage-head-copywarn'>\n$1\n</div>",
3109                                 'editpage-head-copy-warn' );
3110                 }
3111         }
3112
3113         /**
3114          * Give a chance for site and per-namespace customizations of
3115          * terms of service summary link that might exist separately
3116          * from the copyright notice.
3117          *
3118          * This will display between the save button and the edit tools,
3119          * so should remain short!
3120          */
3121         protected function showTosSummary() {
3122                 $msg = 'editpage-tos-summary';
3123                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
3124                 if ( !wfMessage( $msg )->isDisabled() ) {
3125                         global $wgOut;
3126                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
3127                         $wgOut->addWikiMsg( $msg );
3128                         $wgOut->addHTML( '</div>' );
3129                 }
3130         }
3131
3132         protected function showEditTools() {
3133                 global $wgOut;
3134                 $wgOut->addHTML( '<div class="mw-editTools">' .
3135                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
3136                         '</div>' );
3137         }
3138
3139         /**
3140          * Get the copyright warning
3141          *
3142          * Renamed to getCopyrightWarning(), old name kept around for backwards compatibility
3143          * @return string
3144          */
3145         protected function getCopywarn() {
3146                 return self::getCopyrightWarning( $this->mTitle );
3147         }
3148
3149         /**
3150          * Get the copyright warning, by default returns wikitext
3151          *
3152          * @param Title $title
3153          * @param string $format Output format, valid values are any function of a Message object
3154          * @return string
3155          */
3156         public static function getCopyrightWarning( $title, $format = 'plain' ) {
3157                 global $wgRightsText;
3158                 if ( $wgRightsText ) {
3159                         $copywarnMsg = array( 'copyrightwarning',
3160                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]',
3161                                 $wgRightsText );
3162                 } else {
3163                         $copywarnMsg = array( 'copyrightwarning2',
3164                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]' );
3165                 }
3166                 // Allow for site and per-namespace customization of contribution/copyright notice.
3167                 wfRunHooks( 'EditPageCopyrightWarning', array( $title, &$copywarnMsg ) );
3168
3169                 return "<div id=\"editpage-copywarn\">\n" .
3170                         call_user_func_array( 'wfMessage', $copywarnMsg )->$format() . "\n</div>";
3171         }
3172
3173         /**
3174          * Get the Limit report for page previews
3175          *
3176          * @since 1.22
3177          * @param ParserOutput $output ParserOutput object from the parse
3178          * @return string HTML
3179          */
3180         public static function getPreviewLimitReport( $output ) {
3181                 if ( !$output || !$output->getLimitReportData() ) {
3182                         return '';
3183                 }
3184
3185                 wfProfileIn( __METHOD__ );
3186
3187                 $limitReport = Html::rawElement( 'div', array( 'class' => 'mw-limitReportExplanation' ),
3188                         wfMessage( 'limitreport-title' )->parseAsBlock()
3189                 );
3190
3191                 // Show/hide animation doesn't work correctly on a table, so wrap it in a div.
3192                 $limitReport .= Html::openElement( 'div', array( 'class' => 'preview-limit-report-wrapper' ) );
3193
3194                 $limitReport .= Html::openElement( 'table', array(
3195                         'class' => 'preview-limit-report wikitable'
3196                 ) ) .
3197                         Html::openElement( 'tbody' );
3198
3199                 foreach ( $output->getLimitReportData() as $key => $value ) {
3200                         if ( wfRunHooks( 'ParserLimitReportFormat',
3201                                 array( $key, &$value, &$limitReport, true, true )
3202                         ) ) {
3203                                 $keyMsg = wfMessage( $key );
3204                                 $valueMsg = wfMessage( array( "$key-value-html", "$key-value" ) );
3205                                 if ( !$valueMsg->exists() ) {
3206                                         $valueMsg = new RawMessage( '$1' );
3207                                 }
3208                                 if ( !$keyMsg->isDisabled() && !$valueMsg->isDisabled() ) {
3209                                         $limitReport .= Html::openElement( 'tr' ) .
3210                                                 Html::rawElement( 'th', null, $keyMsg->parse() ) .
3211                                                 Html::rawElement( 'td', null, $valueMsg->params( $value )->parse() ) .
3212                                                 Html::closeElement( 'tr' );
3213                                 }
3214                         }
3215                 }
3216
3217                 $limitReport .= Html::closeElement( 'tbody' ) .
3218                         Html::closeElement( 'table' ) .
3219                         Html::closeElement( 'div' );
3220
3221                 wfProfileOut( __METHOD__ );
3222
3223                 return $limitReport;
3224         }
3225
3226         protected function showStandardInputs( &$tabindex = 2 ) {
3227                 global $wgOut;
3228                 $wgOut->addHTML( "<div class='editOptions'>\n" );
3229
3230                 if ( $this->section != 'new' ) {
3231                         $this->showSummaryInput( false, $this->summary );
3232                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
3233                 }
3234
3235                 $checkboxes = $this->getCheckboxes( $tabindex,
3236                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
3237                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
3238
3239                 // Show copyright warning.
3240                 $wgOut->addWikiText( $this->getCopywarn() );
3241                 $wgOut->addHTML( $this->editFormTextAfterWarn );
3242
3243                 $wgOut->addHTML( "<div class='editButtons'>\n" );
3244                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
3245
3246                 $cancel = $this->getCancelLink();
3247                 if ( $cancel !== '' ) {
3248                         $cancel .= Html::element( 'span',
3249                                 array( 'class' => 'mw-editButtons-pipe-separator' ),
3250                                 wfMessage( 'pipe-separator' )->text() );
3251                 }
3252
3253                 $message = wfMessage( 'edithelppage' )->inContentLanguage()->text();
3254                 $edithelpurl = Skin::makeInternalOrExternalUrl( $message );
3255                 $attrs = array(
3256                         'target' => 'helpwindow',
3257                         'href' => $edithelpurl,
3258                 );
3259                 $edithelp = Html::linkButton( wfMessage( 'edithelp' )->text(),
3260                         $attrs, array( 'mw-ui-quiet' ) ) .
3261                         wfMessage( 'word-separator' )->escaped() .
3262                         wfMessage( 'newwindow' )->parse();
3263
3264                 $wgOut->addHTML( "      <span class='cancelLink'>{$cancel}</span>\n" );
3265                 $wgOut->addHTML( "      <span class='editHelp'>{$edithelp}</span>\n" );
3266                 $wgOut->addHTML( "</div><!-- editButtons -->\n" );
3267
3268                 wfRunHooks( 'EditPage::showStandardInputs:options', array( $this, $wgOut, &$tabindex ) );
3269
3270                 $wgOut->addHTML( "</div><!-- editOptions -->\n" );
3271         }
3272
3273         /**
3274          * Show an edit conflict. textbox1 is already shown in showEditForm().
3275          * If you want to use another entry point to this function, be careful.
3276          */
3277         protected function showConflict() {
3278                 global $wgOut;
3279
3280                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
3281                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3282
3283                         $content1 = $this->toEditContent( $this->textbox1 );
3284                         $content2 = $this->toEditContent( $this->textbox2 );
3285
3286                         $handler = ContentHandler::getForModelID( $this->contentModel );
3287                         $de = $handler->createDifferenceEngine( $this->mArticle->getContext() );
3288                         $de->setContent( $content2, $content1 );
3289                         $de->showDiff(
3290                                 wfMessage( 'yourtext' )->parse(),
3291                                 wfMessage( 'storedversion' )->text()
3292                         );
3293
3294                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3295                         $this->showTextbox2();
3296                 }
3297         }
3298
3299         /**
3300          * @return string
3301          */
3302         public function getCancelLink() {
3303                 $cancelParams = array();
3304                 if ( !$this->isConflict && $this->oldid > 0 ) {
3305                         $cancelParams['oldid'] = $this->oldid;
3306                 }
3307                 $attrs = array( 'id' => 'mw-editform-cancel' );
3308
3309                 return Linker::linkKnown(
3310                         $this->getContextTitle(),
3311                         wfMessage( 'cancel' )->parse(),
3312                         Html::buttonAttributes( $attrs, array( 'mw-ui-quiet' ) ),
3313                         $cancelParams
3314                 );
3315         }
3316
3317         /**
3318          * Returns the URL to use in the form's action attribute.
3319          * This is used by EditPage subclasses when simply customizing the action
3320          * variable in the constructor is not enough. This can be used when the
3321          * EditPage lives inside of a Special page rather than a custom page action.
3322          *
3323          * @param Title $title Title object for which is being edited (where we go to for &action= links)
3324          * @return string
3325          */
3326         protected function getActionURL( Title $title ) {
3327                 return $title->getLocalURL( array( 'action' => $this->action ) );
3328         }
3329
3330         /**
3331          * Check if a page was deleted while the user was editing it, before submit.
3332          * Note that we rely on the logging table, which hasn't been always there,
3333          * but that doesn't matter, because this only applies to brand new
3334          * deletes.
3335          * @return bool
3336          */
3337         protected function wasDeletedSinceLastEdit() {
3338                 if ( $this->deletedSinceEdit !== null ) {
3339                         return $this->deletedSinceEdit;
3340                 }
3341
3342                 $this->deletedSinceEdit = false;
3343
3344                 if ( $this->mTitle->isDeletedQuick() ) {
3345                         $this->lastDelete = $this->getLastDelete();
3346                         if ( $this->lastDelete ) {
3347                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
3348                                 if ( $deleteTime > $this->starttime ) {
3349                                         $this->deletedSinceEdit = true;
3350                                 }
3351                         }
3352                 }
3353
3354                 return $this->deletedSinceEdit;
3355         }
3356
3357         /**
3358          * @return bool|stdClass
3359          */
3360         protected function getLastDelete() {
3361                 $dbr = wfGetDB( DB_SLAVE );
3362                 $data = $dbr->selectRow(
3363                         array( 'logging', 'user' ),
3364                         array(
3365                                 'log_type',
3366                                 'log_action',
3367                                 'log_timestamp',
3368                                 'log_user',
3369                                 'log_namespace',
3370                                 'log_title',
3371                                 'log_comment',
3372                                 'log_params',
3373                                 'log_deleted',
3374                                 'user_name'
3375                         ), array(
3376                                 'log_namespace' => $this->mTitle->getNamespace(),
3377                                 'log_title' => $this->mTitle->getDBkey(),
3378                                 'log_type' => 'delete',
3379                                 'log_action' => 'delete',
3380                                 'user_id=log_user'
3381                         ),
3382                         __METHOD__,
3383                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
3384                 );
3385                 // Quick paranoid permission checks...
3386                 if ( is_object( $data ) ) {
3387                         if ( $data->log_deleted & LogPage::DELETED_USER ) {
3388                                 $data->user_name = wfMessage( 'rev-deleted-user' )->escaped();
3389                         }
3390
3391                         if ( $data->log_deleted & LogPage::DELETED_COMMENT ) {
3392                                 $data->log_comment = wfMessage( 'rev-deleted-comment' )->escaped();
3393                         }
3394                 }
3395
3396                 return $data;
3397         }
3398
3399         /**
3400          * Get the rendered text for previewing.
3401          * @throws MWException
3402          * @return string
3403          */
3404         function getPreviewText() {
3405                 global $wgOut, $wgUser, $wgRawHtml, $wgLang;
3406                 global $wgAllowUserCss, $wgAllowUserJs;
3407
3408                 wfProfileIn( __METHOD__ );
3409
3410                 if ( $wgRawHtml && !$this->mTokenOk ) {
3411                         // Could be an offsite preview attempt. This is very unsafe if
3412                         // HTML is enabled, as it could be an attack.
3413                         $parsedNote = '';
3414                         if ( $this->textbox1 !== '' ) {
3415                                 // Do not put big scary notice, if previewing the empty
3416                                 // string, which happens when you initially edit
3417                                 // a category page, due to automatic preview-on-open.
3418                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
3419                                         wfMessage( 'session_fail_preview_html' )->text() . "</div>", true, /* interface */true );
3420                         }
3421                         wfProfileOut( __METHOD__ );
3422                         return $parsedNote;
3423                 }
3424
3425                 $note = '';
3426
3427                 try {
3428                         $content = $this->toEditContent( $this->textbox1 );
3429
3430                         $previewHTML = '';
3431                         if ( !wfRunHooks(
3432                                 'AlternateEditPreview',
3433                                 array( $this, &$content, &$previewHTML, &$this->mParserOutput ) )
3434                         ) {
3435                                 wfProfileOut( __METHOD__ );
3436                                 return $previewHTML;
3437                         }
3438
3439                         # provide a anchor link to the editform
3440                         $continueEditing = '<span class="mw-continue-editing">' .
3441                                 '[[#' . self::EDITFORM_ID . '|' . $wgLang->getArrow() . ' ' .
3442                                 wfMessage( 'continue-editing' )->text() . ']]</span>';
3443                         if ( $this->mTriedSave && !$this->mTokenOk ) {
3444                                 if ( $this->mTokenOkExceptSuffix ) {
3445                                         $note = wfMessage( 'token_suffix_mismatch' )->plain();
3446                                 } else {
3447                                         $note = wfMessage( 'session_fail_preview' )->plain();
3448                                 }
3449                         } elseif ( $this->incompleteForm ) {
3450                                 $note = wfMessage( 'edit_form_incomplete' )->plain();
3451                         } else {
3452                                 $note = wfMessage( 'previewnote' )->plain() . ' ' . $continueEditing;
3453                         }
3454
3455                         $parserOptions = $this->mArticle->makeParserOptions( $this->mArticle->getContext() );
3456                         $parserOptions->setEditSection( false );
3457                         $parserOptions->setIsPreview( true );
3458                         $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
3459
3460                         # don't parse non-wikitext pages, show message about preview
3461                         if ( $this->mTitle->isCssJsSubpage() || $this->mTitle->isCssOrJsPage() ) {
3462                                 if ( $this->mTitle->isCssJsSubpage() ) {
3463                                         $level = 'user';
3464                                 } elseif ( $this->mTitle->isCssOrJsPage() ) {
3465                                         $level = 'site';
3466                                 } else {
3467                                         $level = false;
3468                                 }
3469
3470                                 if ( $content->getModel() == CONTENT_MODEL_CSS ) {
3471                                         $format = 'css';
3472                                         if ( $level === 'user' && !$wgAllowUserCss ) {
3473                                                 $format = false;
3474                                         }
3475                                 } elseif ( $content->getModel() == CONTENT_MODEL_JAVASCRIPT ) {
3476                                         $format = 'js';
3477                                         if ( $level === 'user' && !$wgAllowUserJs ) {
3478                                                 $format = false;
3479                                         }
3480                                 } else {
3481                                         $format = false;
3482                                 }
3483
3484                                 # Used messages to make sure grep find them:
3485                                 # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
3486                                 if ( $level && $format ) {
3487                                         $note = "<div id='mw-{$level}{$format}preview'>" .
3488                                                 wfMessage( "{$level}{$format}preview" )->text() .
3489                                                 ' ' . $continueEditing . "</div>";
3490                                 }
3491                         }
3492
3493                         # If we're adding a comment, we need to show the
3494                         # summary as the headline
3495                         if ( $this->section === "new" && $this->summary !== "" ) {
3496                                 $content = $content->addSectionHeader( $this->summary );
3497                         }
3498
3499                         $hook_args = array( $this, &$content );
3500                         ContentHandler::runLegacyHooks( 'EditPageGetPreviewText', $hook_args );
3501                         wfRunHooks( 'EditPageGetPreviewContent', $hook_args );
3502
3503                         $parserOptions->enableLimitReport();
3504
3505                         # For CSS/JS pages, we should have called the ShowRawCssJs hook here.
3506                         # But it's now deprecated, so never mind
3507
3508                         $content = $content->preSaveTransform( $this->mTitle, $wgUser, $parserOptions );
3509                         $parserOutput = $content->getParserOutput(
3510                                 $this->getArticle()->getTitle(),
3511                                 null,
3512                                 $parserOptions
3513                         );
3514
3515                         $previewHTML = $parserOutput->getText();
3516                         $this->mParserOutput = $parserOutput;
3517                         $wgOut->addParserOutputMetadata( $parserOutput );
3518
3519                         if ( count( $parserOutput->getWarnings() ) ) {
3520                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
3521                         }
3522                 } catch ( MWContentSerializationException $ex ) {
3523                         $m = wfMessage(
3524                                 'content-failed-to-parse',
3525                                 $this->contentModel,
3526                                 $this->contentFormat,
3527                                 $ex->getMessage()
3528                         );
3529                         $note .= "\n\n" . $m->parse();
3530                         $previewHTML = '';
3531                 }
3532
3533                 if ( $this->isConflict ) {
3534                         $conflict = '<h2 id="mw-previewconflict">'
3535                                 . wfMessage( 'previewconflict' )->escaped() . "</h2>\n";
3536                 } else {
3537                         $conflict = '<hr />';
3538                 }
3539
3540                 $previewhead = "<div class='previewnote'>\n" .
3541                         '<h2 id="mw-previewheader">' . wfMessage( 'preview' )->escaped() . "</h2>" .
3542                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
3543
3544                 $pageViewLang = $this->mTitle->getPageViewLanguage();
3545                 $attribs = array( 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3546                         'class' => 'mw-content-' . $pageViewLang->getDir() );
3547                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
3548
3549                 wfProfileOut( __METHOD__ );
3550                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
3551         }
3552
3553         /**
3554          * @return array
3555          */
3556         function getTemplates() {
3557                 if ( $this->preview || $this->section != '' ) {
3558                         $templates = array();
3559                         if ( !isset( $this->mParserOutput ) ) {
3560                                 return $templates;
3561                         }
3562                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
3563                                 foreach ( array_keys( $template ) as $dbk ) {
3564                                         $templates[] = Title::makeTitle( $ns, $dbk );
3565                                 }
3566                         }
3567                         return $templates;
3568                 } else {
3569                         return $this->mTitle->getTemplateLinksFrom();
3570                 }
3571         }
3572
3573         /**
3574          * Shows a bulletin board style toolbar for common editing functions.
3575          * It can be disabled in the user preferences.
3576          *
3577          * @return string
3578          */
3579         static function getEditToolbar() {
3580                 global $wgContLang, $wgOut;
3581                 global $wgEnableUploads, $wgForeignFileRepos;
3582
3583                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
3584
3585                 /**
3586                  * $toolarray is an array of arrays each of which includes the
3587                  * opening tag, the closing tag, optionally a sample text that is
3588                  * inserted between the two when no selection is highlighted
3589                  * and.  The tip text is shown when the user moves the mouse
3590                  * over the button.
3591                  *
3592                  * Images are defined in ResourceLoaderEditToolbarModule.
3593                  */
3594                 $toolarray = array(
3595                         array(
3596                                 'id'     => 'mw-editbutton-bold',
3597                                 'open'   => '\'\'\'',
3598                                 'close'  => '\'\'\'',
3599                                 'sample' => wfMessage( 'bold_sample' )->text(),
3600                                 'tip'    => wfMessage( 'bold_tip' )->text(),
3601                         ),
3602                         array(
3603                                 'id'     => 'mw-editbutton-italic',
3604                                 'open'   => '\'\'',
3605                                 'close'  => '\'\'',
3606                                 'sample' => wfMessage( 'italic_sample' )->text(),
3607                                 'tip'    => wfMessage( 'italic_tip' )->text(),
3608                         ),
3609                         array(
3610                                 'id'     => 'mw-editbutton-link',
3611                                 'open'   => '[[',
3612                                 'close'  => ']]',
3613                                 'sample' => wfMessage( 'link_sample' )->text(),
3614                                 'tip'    => wfMessage( 'link_tip' )->text(),
3615                         ),
3616                         array(
3617                                 'id'     => 'mw-editbutton-extlink',
3618                                 'open'   => '[',
3619                                 'close'  => ']',
3620                                 'sample' => wfMessage( 'extlink_sample' )->text(),
3621                                 'tip'    => wfMessage( 'extlink_tip' )->text(),
3622                         ),
3623                         array(
3624                                 'id'     => 'mw-editbutton-headline',
3625                                 'open'   => "\n== ",
3626                                 'close'  => " ==\n",
3627                                 'sample' => wfMessage( 'headline_sample' )->text(),
3628                                 'tip'    => wfMessage( 'headline_tip' )->text(),
3629                         ),
3630                         $imagesAvailable ? array(
3631                                 'id'     => 'mw-editbutton-image',
3632                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
3633                                 'close'  => ']]',
3634                                 'sample' => wfMessage( 'image_sample' )->text(),
3635                                 'tip'    => wfMessage( 'image_tip' )->text(),
3636                         ) : false,
3637                         $imagesAvailable ? array(
3638                                 'id'     => 'mw-editbutton-media',
3639                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
3640                                 'close'  => ']]',
3641                                 'sample' => wfMessage( 'media_sample' )->text(),
3642                                 'tip'    => wfMessage( 'media_tip' )->text(),
3643                         ) : false,
3644                         array(
3645                                 'id'     => 'mw-editbutton-nowiki',
3646                                 'open'   => "<nowiki>",
3647                                 'close'  => "</nowiki>",
3648                                 'sample' => wfMessage( 'nowiki_sample' )->text(),
3649                                 'tip'    => wfMessage( 'nowiki_tip' )->text(),
3650                         ),
3651                         array(
3652                                 'id'     => 'mw-editbutton-signature',
3653                                 'open'   => '--~~~~',
3654                                 'close'  => '',
3655                                 'sample' => '',
3656                                 'tip'    => wfMessage( 'sig_tip' )->text(),
3657                         ),
3658                         array(
3659                                 'id'     => 'mw-editbutton-hr',
3660                                 'open'   => "\n----\n",
3661                                 'close'  => '',
3662                                 'sample' => '',
3663                                 'tip'    => wfMessage( 'hr_tip' )->text(),
3664                         )
3665                 );
3666
3667                 $script = 'mw.loader.using("mediawiki.toolbar", function () {';
3668                 foreach ( $toolarray as $tool ) {
3669                         if ( !$tool ) {
3670                                 continue;
3671                         }
3672
3673                         $params = array(
3674                                 // Images are defined in ResourceLoaderEditToolbarModule
3675                                 false,
3676                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
3677                                 // Older browsers show a "speedtip" type message only for ALT.
3678                                 // Ideally these should be different, realistically they
3679                                 // probably don't need to be.
3680                                 $tool['tip'],
3681                                 $tool['open'],
3682                                 $tool['close'],
3683                                 $tool['sample'],
3684                                 $tool['id'],
3685                         );
3686
3687                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
3688                 }
3689
3690                 $script .= '});';
3691                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
3692
3693                 $toolbar = '<div id="toolbar"></div>';
3694
3695                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
3696
3697                 return $toolbar;
3698         }
3699
3700         /**
3701          * Returns an array of html code of the following checkboxes:
3702          * minor and watch
3703          *
3704          * @param int $tabindex Current tabindex
3705          * @param array $checked Array of checkbox => bool, where bool indicates the checked
3706          *                 status of the checkbox
3707          *
3708          * @return array
3709          */
3710         public function getCheckboxes( &$tabindex, $checked ) {
3711                 global $wgUser, $wgUseMediaWikiUIEverywhere;
3712
3713                 $checkboxes = array();
3714
3715                 // don't show the minor edit checkbox if it's a new page or section
3716                 if ( !$this->isNew ) {
3717                         $checkboxes['minor'] = '';
3718                         $minorLabel = wfMessage( 'minoredit' )->parse();
3719                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
3720                                 $attribs = array(
3721                                         'tabindex' => ++$tabindex,
3722                                         'accesskey' => wfMessage( 'accesskey-minoredit' )->text(),
3723                                         'id' => 'wpMinoredit',
3724                                 );
3725                                 $minorEditHtml =
3726                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
3727                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
3728                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
3729                                         ">{$minorLabel}</label>";
3730
3731                                 if ( $wgUseMediaWikiUIEverywhere ) {
3732                                         $checkboxes['minor'] = Html::openElement( 'div', array( 'class' => 'mw-ui-checkbox' ) ) .
3733                                                 $minorEditHtml .
3734                                         Html::closeElement( 'div' );
3735                                 } else {
3736                                         $checkboxes['minor'] = $minorEditHtml;
3737                                 }
3738                         }
3739                 }
3740
3741                 $watchLabel = wfMessage( 'watchthis' )->parse();
3742                 $checkboxes['watch'] = '';
3743                 if ( $wgUser->isLoggedIn() ) {
3744                         $attribs = array(
3745                                 'tabindex' => ++$tabindex,
3746                                 'accesskey' => wfMessage( 'accesskey-watch' )->text(),
3747                                 'id' => 'wpWatchthis',
3748                         );
3749                         $watchThisHtml =
3750                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
3751                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
3752                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
3753                                 ">{$watchLabel}</label>";
3754                         if ( $wgUseMediaWikiUIEverywhere ) {
3755                                 $checkboxes['watch'] = Html::openElement( 'div', array( 'class' => 'mw-ui-checkbox' ) ) .
3756                                         $watchThisHtml .
3757                                         Html::closeElement( 'div' );
3758                         } else {
3759                                 $checkboxes['watch'] = $watchThisHtml;
3760                         }
3761                 }
3762                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
3763                 return $checkboxes;
3764         }
3765
3766         /**
3767          * Returns an array of html code of the following buttons:
3768          * save, diff, preview and live
3769          *
3770          * @param int $tabindex Current tabindex
3771          *
3772          * @return array
3773          */
3774         public function getEditButtons( &$tabindex ) {
3775                 $buttons = array();
3776
3777                 $attribs = array(
3778                         'id' => 'wpSave',
3779                         'name' => 'wpSave',
3780                         'tabindex' => ++$tabindex,
3781                 ) + Linker::tooltipAndAccesskeyAttribs( 'save' );
3782                 $buttons['save'] = Html::submitButton( wfMessage( 'savearticle' )->text(),
3783                         $attribs, array( 'mw-ui-constructive' ) );
3784
3785                 ++$tabindex; // use the same for preview and live preview
3786                 $attribs = array(
3787                         'id' => 'wpPreview',
3788                         'name' => 'wpPreview',
3789                         'tabindex' => $tabindex,
3790                 ) + Linker::tooltipAndAccesskeyAttribs( 'preview' );
3791                 $buttons['preview'] = Html::submitButton( wfMessage( 'showpreview' )->text(),
3792                         $attribs );
3793                 $buttons['live'] = '';
3794
3795                 $attribs = array(
3796                         'id' => 'wpDiff',
3797                         'name' => 'wpDiff',
3798                         'tabindex' => ++$tabindex,
3799                 ) + Linker::tooltipAndAccesskeyAttribs( 'diff' );
3800                 $buttons['diff'] = Html::submitButton( wfMessage( 'showdiff' )->text(),
3801                         $attribs );
3802
3803                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
3804                 return $buttons;
3805         }
3806
3807         /**
3808          * Output preview text only. This can be sucked into the edit page
3809          * via JavaScript, and saves the server time rendering the skin as
3810          * well as theoretically being more robust on the client (doesn't
3811          * disturb the edit box's undo history, won't eat your text on
3812          * failure, etc).
3813          *
3814          * @todo This doesn't include category or interlanguage links.
3815          *       Would need to enhance it a bit, "<s>maybe wrap them in XML
3816          *       or something...</s>" that might also require more skin
3817          *       initialization, so check whether that's a problem.
3818          */
3819         function livePreview() {
3820                 global $wgOut;
3821                 $wgOut->disable();
3822                 header( 'Content-type: text/xml; charset=utf-8' );
3823                 header( 'Cache-control: no-cache' );
3824
3825                 $previewText = $this->getPreviewText();
3826                 #$categories = $skin->getCategoryLinks();
3827
3828                 $s =
3829                         '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
3830                         Xml::tags( 'livepreview', null,
3831                                 Xml::element( 'preview', null, $previewText )
3832                                 #.      Xml::element( 'category', null, $categories )
3833                         );
3834                 echo $s;
3835         }
3836
3837         /**
3838          * Creates a basic error page which informs the user that
3839          * they have attempted to edit a nonexistent section.
3840          */
3841         function noSuchSectionPage() {
3842                 global $wgOut;
3843
3844                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3845
3846                 $res = wfMessage( 'nosuchsectiontext', $this->section )->parseAsBlock();
3847                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3848                 $wgOut->addHTML( $res );
3849
3850                 $wgOut->returnToMain( false, $this->mTitle );
3851         }
3852
3853         /**
3854          * Show "your edit contains spam" page with your diff and text
3855          *
3856          * @param string|array|bool $match Text (or array of texts) which triggered one or more filters
3857          */
3858         public function spamPageWithContent( $match = false ) {
3859                 global $wgOut, $wgLang;
3860                 $this->textbox2 = $this->textbox1;
3861
3862                 if ( is_array( $match ) ) {
3863                         $match = $wgLang->listToText( $match );
3864                 }
3865                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3866
3867                 $wgOut->addHTML( '<div id="spamprotected">' );
3868                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3869                 if ( $match ) {
3870                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3871                 }
3872                 $wgOut->addHTML( '</div>' );
3873
3874                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3875                 $this->showDiff();
3876
3877                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3878                 $this->showTextbox2();
3879
3880                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3881         }
3882
3883         /**
3884          * Check if the browser is on a blacklist of user-agents known to
3885          * mangle UTF-8 data on form submission. Returns true if Unicode
3886          * should make it through, false if it's known to be a problem.
3887          * @return bool
3888          */
3889         private function checkUnicodeCompliantBrowser() {
3890                 global $wgBrowserBlackList, $wgRequest;
3891
3892                 $currentbrowser = $wgRequest->getHeader( 'User-Agent' );
3893                 if ( $currentbrowser === false ) {
3894                         // No User-Agent header sent? Trust it by default...
3895                         return true;
3896                 }
3897
3898                 foreach ( $wgBrowserBlackList as $browser ) {
3899                         if ( preg_match( $browser, $currentbrowser ) ) {
3900                                 return false;
3901                         }
3902                 }
3903                 return true;
3904         }
3905
3906         /**
3907          * Filter an input field through a Unicode de-armoring process if it
3908          * came from an old browser with known broken Unicode editing issues.
3909          *
3910          * @param WebRequest $request
3911          * @param string $field
3912          * @return string
3913          */
3914         protected function safeUnicodeInput( $request, $field ) {
3915                 $text = rtrim( $request->getText( $field ) );
3916                 return $request->getBool( 'safemode' )
3917                         ? $this->unmakeSafe( $text )
3918                         : $text;
3919         }
3920
3921         /**
3922          * Filter an output field through a Unicode armoring process if it is
3923          * going to an old browser with known broken Unicode editing issues.
3924          *
3925          * @param string $text
3926          * @return string
3927          */
3928         protected function safeUnicodeOutput( $text ) {
3929                 global $wgContLang;
3930                 $codedText = $wgContLang->recodeForEdit( $text );
3931                 return $this->checkUnicodeCompliantBrowser()
3932                         ? $codedText
3933                         : $this->makeSafe( $codedText );
3934         }
3935
3936         /**
3937          * A number of web browsers are known to corrupt non-ASCII characters
3938          * in a UTF-8 text editing environment. To protect against this,
3939          * detected browsers will be served an armored version of the text,
3940          * with non-ASCII chars converted to numeric HTML character references.
3941          *
3942          * Preexisting such character references will have a 0 added to them
3943          * to ensure that round-trips do not alter the original data.
3944          *
3945          * @param string $invalue
3946          * @return string
3947          */
3948         private function makeSafe( $invalue ) {
3949                 // Armor existing references for reversibility.
3950                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3951
3952                 $bytesleft = 0;
3953                 $result = "";
3954                 $working = 0;
3955                 $valueLength = strlen( $invalue );
3956                 for ( $i = 0; $i < $valueLength; $i++ ) {
3957                         $bytevalue = ord( $invalue[$i] );
3958                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
3959                                 $result .= chr( $bytevalue );
3960                                 $bytesleft = 0;
3961                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
3962                                 $working = $working << 6;
3963                                 $working += ( $bytevalue & 0x3F );
3964                                 $bytesleft--;
3965                                 if ( $bytesleft <= 0 ) {
3966                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3967                                 }
3968                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
3969                                 $working = $bytevalue & 0x1F;
3970                                 $bytesleft = 1;
3971                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
3972                                 $working = $bytevalue & 0x0F;
3973                                 $bytesleft = 2;
3974                         } else { // 1111 0xxx
3975                                 $working = $bytevalue & 0x07;
3976                                 $bytesleft = 3;
3977                         }
3978                 }
3979                 return $result;
3980         }
3981
3982         /**
3983          * Reverse the previously applied transliteration of non-ASCII characters
3984          * back to UTF-8. Used to protect data from corruption by broken web browsers
3985          * as listed in $wgBrowserBlackList.
3986          *
3987          * @param string $invalue
3988          * @return string
3989          */
3990         private function unmakeSafe( $invalue ) {
3991                 $result = "";
3992                 $valueLength = strlen( $invalue );
3993                 for ( $i = 0; $i < $valueLength; $i++ ) {
3994                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
3995                                 $i += 3;
3996                                 $hexstring = "";
3997                                 do {
3998                                         $hexstring .= $invalue[$i];
3999                                         $i++;
4000                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
4001
4002                                 // Do some sanity checks. These aren't needed for reversibility,
4003                                 // but should help keep the breakage down if the editor
4004                                 // breaks one of the entities whilst editing.
4005                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) && ( strlen( $hexstring ) <= 6 ) ) {
4006                                         $codepoint = hexdec( $hexstring );
4007                                         $result .= codepointToUtf8( $codepoint );
4008                                 } else {
4009                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
4010                                 }
4011                         } else {
4012                                 $result .= substr( $invalue, $i, 1 );
4013                         }
4014                 }
4015                 // reverse the transform that we made for reversibility reasons.
4016                 return strtr( $result, array( "&#x0" => "&#x" ) );
4017         }
4018 }