includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split from Article)
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * EditPage cares about two distinct titles:
  14  * $this->mContextTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  *
  19  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  20  * headaches, which may be fatal.
  21  */
  22 class EditPage {
  23
  24         /**
  25          * Status: Article successfully updated
  26          */
  27         const AS_SUCCESS_UPDATE            = 200;
  28
  29         /**
  30          * Status: Article successfully created
  31          */
  32         const AS_SUCCESS_NEW_ARTICLE       = 201;
  33
  34         /**
  35          * Status: Article update aborted by a hook function
  36          */
  37         const AS_HOOK_ERROR                = 210;
  38
  39         /**
  40          * Status: The filter function set in $wgFilterCallback returned true (= block it)
  41          */
  42         const AS_FILTERING                 = 211;
  43
  44         /**
  45          * Status: A hook function returned an error
  46          */
  47         const AS_HOOK_ERROR_EXPECTED       = 212;
  48
  49         /**
  50          * Status: User is blocked from editting this page
  51          */
  52         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  53
  54         /**
  55          * Status: Content too big (> $wgMaxArticleSize)
  56          */
  57         const AS_CONTENT_TOO_BIG           = 216;
  58
  59         /**
  60          * Status: User cannot edit? (not used)
  61          */
  62         const AS_USER_CANNOT_EDIT          = 217;
  63
  64         /**
  65          * Status: this anonymous user is not allowed to edit this page
  66          */
  67         const AS_READ_ONLY_PAGE_ANON       = 218;
  68
  69         /**
  70          * Status: this logged in user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  73
  74         /**
  75          * Status: wiki is in readonly mode (wfReadOnly() == true)
  76          */
  77         const AS_READ_ONLY_PAGE            = 220;
  78
  79         /**
  80          * Status: rate limiter for action 'edit' was tripped
  81          */
  82         const AS_RATE_LIMITED              = 221;
  83
  84         /**
  85          * Status: article was deleted while editting and param wpRecreate == false or form
  86          * was not posted
  87          */
  88         const AS_ARTICLE_WAS_DELETED       = 222;
  89
  90         /**
  91          * Status: user tried to create this page, but is not allowed to do that
  92          * ( Title->usercan('create') == false )
  93          */
  94         const AS_NO_CREATE_PERMISSION      = 223;
  95
  96         /**
  97          * Status: user tried to create a blank page
  98          */
  99         const AS_BLANK_ARTICLE             = 224;
 100
 101         /**
 102          * Status: (non-resolvable) edit conflict
 103          */
 104         const AS_CONFLICT_DETECTED         = 225;
 105
 106         /**
 107          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 108          * editting in his own userspace or talkspace and wpIgnoreBlankSummary == false
 109          */
 110         const AS_SUMMARY_NEEDED            = 226;
 111
 112         /**
 113          * Status: user tried to create a new section without content
 114          */
 115         const AS_TEXTBOX_EMPTY             = 228;
 116
 117         /**
 118          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 119          */
 120         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 121
 122         /**
 123          * not used
 124          */
 125         const AS_OK                        = 230;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessfull
 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          * @var Article
 149          */
 150         var $mArticle;
 151
 152         /**
 153          * @var Title
 154          */
 155         var $mTitle;
 156         private $mContextTitle = null;
 157         var $action = 'submit';
 158         var $isConflict = false;
 159         var $isCssJsSubpage = false;
 160         var $isCssSubpage = false;
 161         var $isJsSubpage = false;
 162         var $isWrongCaseCssJsPage = false;
 163         var $isNew = false; // new page or new section
 164         var $deletedSinceEdit;
 165         var $formtype;
 166         var $firsttime;
 167         var $lastDelete;
 168         var $mTokenOk = false;
 169         var $mTokenOkExceptSuffix = false;
 170         var $mTriedSave = false;
 171         var $incompleteForm = false;
 172         var $tooBig = false;
 173         var $kblength = false;
 174         var $missingComment = false;
 175         var $missingSummary = false;
 176         var $allowBlankSummary = false;
 177         var $autoSumm = '';
 178         var $hookError = '';
 179         #var $mPreviewTemplates;
 180
 181         /**
 182          * @var ParserOutput
 183          */
 184         var $mParserOutput;
 185
 186         var $mBaseRevision = false;
 187         var $mShowSummaryField = true;
 188
 189         # Form values
 190         var $save = false, $preview = false, $diff = false;
 191         var $minoredit = false, $watchthis = false, $recreate = false;
 192         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 193         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 194         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 195
 196         # Placeholders for text injection by hooks (must be HTML)
 197         # extensions should take care to _append_ to the present value
 198         public $editFormPageTop = ''; // Before even the preview
 199         public $editFormTextTop = '';
 200         public $editFormTextBeforeContent = '';
 201         public $editFormTextAfterWarn = '';
 202         public $editFormTextAfterTools = '';
 203         public $editFormTextBottom = '';
 204         public $editFormTextAfterContent = '';
 205         public $previewTextAfterContent = '';
 206         public $mPreloadText = '';
 207
 208         /* $didSave should be set to true whenever an article was succesfully altered. */
 209         public $didSave = false;
 210         public $undidRev = 0;
 211
 212         public $suppressIntro = false;
 213
 214         /**
 215          * @param $article Article
 216          */
 217         public function __construct( Article $article ) {
 218                 $this->mArticle = $article;
 219                 $this->mTitle = $article->getTitle();
 220         }
 221
 222         /**
 223          * @return Article
 224          */
 225         public function getArticle() {
 226                 return $this->mArticle;
 227         }
 228
 229         /**
 230          * @since 1.19
 231          * @return Title
 232          */
 233         public function getTitle() {
 234                 return $this->mTitle;
 235         }
 236
 237         /**
 238          * Set the context Title object
 239          *
 240          * @param $title Title object or null
 241          */
 242         public function setContextTitle( $title ) {
 243                 $this->mContextTitle = $title;
 244         }
 245
 246         /**
 247          * Get the context title object.
 248          * If not set, $wgTitle will be returned. This behavior might changed in
 249          * the future to return $this->mTitle instead.
 250          *
 251          * @return Title object
 252          */
 253         public function getContextTitle() {
 254                 if ( is_null( $this->mContextTitle ) ) {
 255                         global $wgTitle;
 256                         return $wgTitle;
 257                 } else {
 258                         return $this->mContextTitle;
 259                 }
 260         }
 261
 262         function submit() {
 263                 $this->edit();
 264         }
 265
 266         /**
 267          * This is the function that gets called for "action=edit". It
 268          * sets up various member variables, then passes execution to
 269          * another function, usually showEditForm()
 270          *
 271          * The edit form is self-submitting, so that when things like
 272          * preview and edit conflicts occur, we get the same form back
 273          * with the extra stuff added.  Only when the final submission
 274          * is made and all is well do we actually save and redirect to
 275          * the newly-edited page.
 276          */
 277         function edit() {
 278                 global $wgOut, $wgRequest, $wgUser;
 279                 // Allow extensions to modify/prevent this form or submission
 280                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 281                         return;
 282                 }
 283
 284                 wfProfileIn( __METHOD__ );
 285                 wfDebug( __METHOD__.": enter\n" );
 286
 287                 // If they used redlink=1 and the page exists, redirect to the main article
 288                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 289                         $wgOut->redirect( $this->mTitle->getFullURL() );
 290                         wfProfileOut( __METHOD__ );
 291                         return;
 292                 }
 293
 294                 $this->importFormData( $wgRequest );
 295                 $this->firsttime = false;
 296
 297                 if ( $this->live ) {
 298                         $this->livePreview();
 299                         wfProfileOut( __METHOD__ );
 300                         return;
 301                 }
 302
 303                 if ( wfReadOnly() && $this->save ) {
 304                         // Force preview
 305                         $this->save = false;
 306                         $this->preview = true;
 307                 }
 308
 309                 if ( $this->save ) {
 310                         $this->formtype = 'save';
 311                 } elseif ( $this->preview ) {
 312                         $this->formtype = 'preview';
 313                 } elseif ( $this->diff ) {
 314                         $this->formtype = 'diff';
 315                 } else { # First time through
 316                         $this->firsttime = true;
 317                         if ( $this->previewOnOpen() ) {
 318                                 $this->formtype = 'preview';
 319                         } else {
 320                                 $this->formtype = 'initial';
 321                         }
 322                 }
 323
 324                 $permErrors = $this->getEditPermissionErrors();
 325                 if ( $permErrors ) {
 326                         wfDebug( __METHOD__ . ": User can't edit\n" );
 327                         // Auto-block user's IP if the account was "hard" blocked
 328                         $wgUser->spreadAnyEditBlock();
 329
 330                         $this->displayPermissionsError( $permErrors );
 331
 332                         wfProfileOut( __METHOD__ );
 333                         return;
 334                 }
 335
 336                 wfProfileIn( __METHOD__."-business-end" );
 337
 338                 $this->isConflict = false;
 339                 // css / js subpages of user pages get a special treatment
 340                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 341                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 342                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 343                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 344                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 345
 346                 # Show applicable editing introductions
 347                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 348                         $this->showIntro();
 349                 }
 350
 351                 # Attempt submission here.  This will check for edit conflicts,
 352                 # and redundantly check for locked database, blocked IPs, etc.
 353                 # that edit() already checked just in case someone tries to sneak
 354                 # in the back door with a hand-edited submission URL.
 355
 356                 if ( 'save' == $this->formtype ) {
 357                         if ( !$this->attemptSave() ) {
 358                                 wfProfileOut( __METHOD__."-business-end" );
 359                                 wfProfileOut( __METHOD__ );
 360                                 return;
 361                         }
 362                 }
 363
 364                 # First time through: get contents, set time for conflict
 365                 # checking, etc.
 366                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 367                         if ( $this->initialiseForm() === false ) {
 368                                 $this->noSuchSectionPage();
 369                                 wfProfileOut( __METHOD__."-business-end" );
 370                                 wfProfileOut( __METHOD__ );
 371                                 return;
 372                         }
 373                         if ( !$this->mTitle->getArticleId() )
 374                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 375                         else
 376                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 377                 }
 378
 379                 $this->showEditForm();
 380                 wfProfileOut( __METHOD__."-business-end" );
 381                 wfProfileOut( __METHOD__ );
 382         }
 383
 384         /**
 385          * @return array
 386          */
 387         protected function getEditPermissionErrors() {
 388                 global $wgUser;
 389                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 390                 # Can this title be created?
 391                 if ( !$this->mTitle->exists() ) {
 392                         $permErrors = array_merge( $permErrors,
 393                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 394                 }
 395                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 396                 $remove = array();
 397                 foreach( $permErrors as $error ) {
 398                         if ( ( $this->preview || $this->diff ) &&
 399                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 400                         {
 401                                 $remove[] = $error;
 402                         }
 403                 }
 404                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 405                 return $permErrors;
 406         }
 407
 408         /**
 409          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 410          * but with the following differences:
 411          * - If redlink=1, the user will be redirected to the page
 412          * - If there is content to display or the error occurs while either saving,
 413          *   previewing or showing the difference, it will be a
 414          *   "View source for ..." page displaying the source code after the error message.
 415          *
 416          * @since 1.19
 417          * @param $permErrors Array of permissions errors, as returned by
 418          *                    Title::getUserPermissionsErrors().
 419          */
 420         protected function displayPermissionsError( array $permErrors ) {
 421                 global $wgRequest, $wgOut;
 422
 423                 if ( $wgRequest->getBool( 'redlink' ) ) {
 424                         // The edit page was reached via a red link.
 425                         // Redirect to the article page and let them click the edit tab if
 426                         // they really want a permission error.
 427                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 428                         return;
 429                 }
 430
 431                 $content = $this->getContent();
 432
 433                 # Use the normal message if there's nothing to display
 434                 if ( $this->firsttime && $content === '' ) {
 435                         $action = $this->mTitle->exists() ? 'edit' :
 436                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 437                         throw new PermissionsError( $action, $permErrors );
 438                 }
 439
 440                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 441                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 442                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 443                 $wgOut->addHTML( "<hr />\n" );
 444
 445                 # If the user made changes, preserve them when showing the markup
 446                 # (This happens when a user is blocked during edit, for instance)
 447                 if ( !$this->firsttime ) {
 448                         $content = $this->textbox1;
 449                         $wgOut->addWikiMsg( 'viewyourtext' );
 450                 } else {
 451                         $wgOut->addWikiMsg( 'viewsourcetext' );
 452                 }
 453
 454                 $this->showTextbox( $content, 'wpTextbox1', array( 'readonly' ) );
 455
 456                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 457                         Linker::formatTemplates( $this->getTemplates() ) ) );
 458
 459                 if ( $this->mTitle->exists() ) {
 460                         $wgOut->returnToMain( null, $this->mTitle );
 461                 }
 462         }
 463
 464         /**
 465          * Show a read-only error
 466          * Parameters are the same as OutputPage:readOnlyPage()
 467          * Redirect to the article page if redlink=1
 468          * @deprecated in 1.19; use displayPermissionsError() instead
 469          */
 470         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 471                 wfDeprecated( __METHOD__, '1.19' );
 472
 473                 global $wgRequest, $wgOut;
 474                 if ( $wgRequest->getBool( 'redlink' ) ) {
 475                         // The edit page was reached via a red link.
 476                         // Redirect to the article page and let them click the edit tab if
 477                         // they really want a permission error.
 478                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 479                 } else {
 480                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 481                 }
 482         }
 483
 484         /**
 485          * Should we show a preview when the edit form is first shown?
 486          *
 487          * @return bool
 488          */
 489         protected function previewOnOpen() {
 490                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 491                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 492                         // Explicit override from request
 493                         return true;
 494                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 495                         // Explicit override from request
 496                         return false;
 497                 } elseif ( $this->section == 'new' ) {
 498                         // Nothing *to* preview for new sections
 499                         return false;
 500                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 501                         // Standard preference behaviour
 502                         return true;
 503                 } elseif ( !$this->mTitle->exists() &&
 504                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 505                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 506                 {
 507                         // Categories are special
 508                         return true;
 509                 } else {
 510                         return false;
 511                 }
 512         }
 513
 514         /**
 515          * Checks whether the user entered a skin name in uppercase,
 516          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 517          *
 518          * @return bool
 519          */
 520         protected function isWrongCaseCssJsPage() {
 521                 if( $this->mTitle->isCssJsSubpage() ) {
 522                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 523                         $skins = array_merge(
 524                                 array_keys( Skin::getSkinNames() ),
 525                                 array( 'common' )
 526                         );
 527                         return !in_array( $name, $skins )
 528                                 && in_array( strtolower( $name ), $skins );
 529                 } else {
 530                         return false;
 531                 }
 532         }
 533
 534         /**
 535          * Does this EditPage class support section editing?
 536          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 537          *
 538          * @return bool
 539          */
 540         protected function isSectionEditSupported() {
 541                 return true;
 542         }
 543
 544         /**
 545          * This function collects the form data and uses it to populate various member variables.
 546          * @param $request WebRequest
 547          */
 548         function importFormData( &$request ) {
 549                 global $wgLang, $wgUser;
 550
 551                 wfProfileIn( __METHOD__ );
 552
 553                 # Section edit can come from either the form or a link
 554                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 555
 556                 if ( $request->wasPosted() ) {
 557                         # These fields need to be checked for encoding.
 558                         # Also remove trailing whitespace, but don't remove _initial_
 559                         # whitespace from the text boxes. This may be significant formatting.
 560                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 561                         if ( !$request->getCheck('wpTextbox2') ) {
 562                                 // Skip this if wpTextbox2 has input, it indicates that we came
 563                                 // from a conflict page with raw page text, not a custom form
 564                                 // modified by subclasses
 565                                 wfProfileIn( get_class($this)."::importContentFormData" );
 566                                 $textbox1 = $this->importContentFormData( $request );
 567                                 if ( isset($textbox1) )
 568                                         $this->textbox1 = $textbox1;
 569                                 wfProfileOut( get_class($this)."::importContentFormData" );
 570                         }
 571
 572                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 573                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 574
 575                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 576                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 577                         # section titles.
 578                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 579
 580                         # Treat sectiontitle the same way as summary.
 581                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 582                         # currently doing double duty as both edit summary and section title. Right now this
 583                         # is just to allow API edits to work around this limitation, but this should be
 584                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 585                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 586                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 587
 588                         $this->edittime = $request->getVal( 'wpEdittime' );
 589                         $this->starttime = $request->getVal( 'wpStarttime' );
 590
 591                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 592
 593                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 594                                 // wpTextbox1 field is missing, possibly due to being "too big"
 595                                 // according to some filter rules such as Suhosin's setting for
 596                                 // suhosin.request.max_value_length (d'oh)
 597                                 $this->incompleteForm = true;
 598                         } else {
 599                                 // edittime should be one of our last fields; if it's missing,
 600                                 // the submission probably broke somewhere in the middle.
 601                                 $this->incompleteForm = is_null( $this->edittime );
 602                         }
 603                         if ( $this->incompleteForm ) {
 604                                 # If the form is incomplete, force to preview.
 605                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 606                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 607                                 $this->preview = true;
 608                         } else {
 609                                 /* Fallback for live preview */
 610                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 611                                 $this->diff = $request->getCheck( 'wpDiff' );
 612
 613                                 // Remember whether a save was requested, so we can indicate
 614                                 // if we forced preview due to session failure.
 615                                 $this->mTriedSave = !$this->preview;
 616
 617                                 if ( $this->tokenOk( $request ) ) {
 618                                         # Some browsers will not report any submit button
 619                                         # if the user hits enter in the comment box.
 620                                         # The unmarked state will be assumed to be a save,
 621                                         # if the form seems otherwise complete.
 622                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 623                                 } elseif ( $this->diff ) {
 624                                         # Failed token check, but only requested "Show Changes".
 625                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 626                                 } else {
 627                                         # Page might be a hack attempt posted from
 628                                         # an external site. Preview instead of saving.
 629                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 630                                         $this->preview = true;
 631                                 }
 632                         }
 633                         $this->save = !$this->preview && !$this->diff;
 634                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 635                                 $this->edittime = null;
 636                         }
 637
 638                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 639                                 $this->starttime = null;
 640                         }
 641
 642                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 643
 644                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 645                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 646
 647                         # Don't force edit summaries when a user is editing their own user or talk page
 648                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 649                                 $this->mTitle->getText() == $wgUser->getName() )
 650                         {
 651                                 $this->allowBlankSummary = true;
 652                         } else {
 653                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 654                         }
 655
 656                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 657                 } else {
 658                         # Not a posted form? Start with nothing.
 659                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 660                         $this->textbox1     = '';
 661                         $this->summary      = '';
 662                         $this->sectiontitle = '';
 663                         $this->edittime     = '';
 664                         $this->starttime    = wfTimestampNow();
 665                         $this->edit         = false;
 666                         $this->preview      = false;
 667                         $this->save         = false;
 668                         $this->diff         = false;
 669                         $this->minoredit    = false;
 670                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 671                         $this->recreate     = false;
 672
 673                         // When creating a new section, we can preload a section title by passing it as the
 674                         // preloadtitle parameter in the URL (Bug 13100)
 675                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 676                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 677                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 678                                 $this->summary = $request->getVal( 'preloadtitle' );
 679                         }
 680                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 681                                 $this->summary = $request->getText( 'summary' );
 682                         }
 683
 684                         if ( $request->getVal( 'minor' ) ) {
 685                                 $this->minoredit = true;
 686                         }
 687                 }
 688
 689                 $this->bot = $request->getBool( 'bot', true );
 690                 $this->nosummary = $request->getBool( 'nosummary' );
 691
 692                 $this->oldid = $request->getInt( 'oldid' );
 693
 694                 $this->live = $request->getCheck( 'live' );
 695                 $this->editintro = $request->getText( 'editintro',
 696                         // Custom edit intro for new sections
 697                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 698
 699                 // Allow extensions to modify form data
 700                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 701
 702                 wfProfileOut( __METHOD__ );
 703         }
 704
 705         /**
 706          * Subpage overridable method for extracting the page content data from the
 707          * posted form to be placed in $this->textbox1, if using customized input
 708          * this method should be overrided and return the page text that will be used
 709          * for saving, preview parsing and so on...
 710          *
 711          * @param $request WebRequest
 712          */
 713         protected function importContentFormData( &$request ) {
 714                 return; // Don't do anything, EditPage already extracted wpTextbox1
 715         }
 716
 717         /**
 718          * Initialise form fields in the object
 719          * Called on the first invocation, e.g. when a user clicks an edit link
 720          * @return bool -- if the requested section is valid
 721          */
 722         function initialiseForm() {
 723                 global $wgUser;
 724                 $this->edittime = $this->mArticle->getTimestamp();
 725                 $this->textbox1 = $this->getContent( false );
 726                 // activate checkboxes if user wants them to be always active
 727                 # Sort out the "watch" checkbox
 728                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 729                         # Watch all edits
 730                         $this->watchthis = true;
 731                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 732                         # Watch creations
 733                         $this->watchthis = true;
 734                 } elseif ( $this->mTitle->userIsWatching() ) {
 735                         # Already watched
 736                         $this->watchthis = true;
 737                 }
 738                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 739                         $this->minoredit = true;
 740                 }
 741                 if ( $this->textbox1 === false ) {
 742                         return false;
 743                 }
 744                 wfProxyCheck();
 745                 return true;
 746         }
 747
 748         /**
 749          * Fetch initial editing page content.
 750          *
 751          * @param $def_text string
 752          * @return mixed string on success, $def_text for invalid sections
 753          * @private
 754          */
 755         function getContent( $def_text = '' ) {
 756                 global $wgOut, $wgRequest, $wgParser;
 757
 758                 wfProfileIn( __METHOD__ );
 759
 760                 $text = false;
 761
 762                 // For message page not locally set, use the i18n message.
 763                 // For other non-existent articles, use preload text if any.
 764                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 765                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 766                                 # If this is a system message, get the default text.
 767                                 $text = $this->mTitle->getDefaultMessageText();
 768                         }
 769                         if ( $text === false ) {
 770                                 # If requested, preload some text.
 771                                 $preload = $wgRequest->getVal( 'preload',
 772                                         // Custom preload text for new sections
 773                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 774                                 $text = $this->getPreloadedText( $preload );
 775                         }
 776                 // For existing pages, get text based on "undo" or section parameters.
 777                 } else {
 778                         if ( $this->section != '' ) {
 779                                 // Get section edit text (returns $def_text for invalid sections)
 780                                 $text = $wgParser->getSection( $this->getOriginalContent(), $this->section, $def_text );
 781                         } else {
 782                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 783                                 $undo = $wgRequest->getInt( 'undo' );
 784
 785                                 if ( $undo > 0 && $undoafter > 0 ) {
 786                                         if ( $undo < $undoafter ) {
 787                                                 # If they got undoafter and undo round the wrong way, switch them
 788                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 789                                         }
 790
 791                                         $undorev = Revision::newFromId( $undo );
 792                                         $oldrev = Revision::newFromId( $undoafter );
 793
 794                                         # Sanity check, make sure it's the right page,
 795                                         # the revisions exist and they were not deleted.
 796                                         # Otherwise, $text will be left as-is.
 797                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 798                                                 $undorev->getPage() == $oldrev->getPage() &&
 799                                                 $undorev->getPage() == $this->mTitle->getArticleId() &&
 800                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 801                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 802
 803                                                 $text = $this->mArticle->getUndoText( $undorev, $oldrev );
 804                                                 if ( $text === false ) {
 805                                                         # Warn the user that something went wrong
 806                                                         $undoMsg = 'failure';
 807                                                 } else {
 808                                                         # Inform the user of our success and set an automatic edit summary
 809                                                         $undoMsg = 'success';
 810
 811                                                         # If we just undid one rev, use an autosummary
 812                                                         $firstrev = $oldrev->getNext();
 813                                                         if ( $firstrev->getId() == $undo ) {
 814                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 815                                                                 if ( $this->summary === '' ) {
 816                                                                         $this->summary = $undoSummary;
 817                                                                 } else {
 818                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 819                                                                 }
 820                                                                 $this->undidRev = $undo;
 821                                                         }
 822                                                         $this->formtype = 'diff';
 823                                                 }
 824                                         } else {
 825                                                 // Failed basic sanity checks.
 826                                                 // Older revisions may have been removed since the link
 827                                                 // was created, or we may simply have got bogus input.
 828                                                 $undoMsg = 'norev';
 829                                         }
 830
 831                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"error mw-undo-{$undoMsg}\">" .
 832                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 833                                 }
 834
 835                                 if ( $text === false ) {
 836                                         $text = $this->getOriginalContent();
 837                                 }
 838                         }
 839                 }
 840
 841                 wfProfileOut( __METHOD__ );
 842                 return $text;
 843         }
 844
 845         /**
 846          * Get the content of the wanted revision, without section extraction.
 847          *
 848          * The result of this function can be used to compare user's input with
 849          * section replaced in its context (using WikiPage::replaceSection())
 850          * to the original text of the edit.
 851          *
 852          * This difers from Article::getContent() that when a missing revision is
 853          * encountered the result will be an empty string and not the
 854          * 'missing-article' message.
 855          *
 856          * @since 1.19
 857          * @return string
 858          */
 859         private function getOriginalContent() {
 860                 if ( $this->section == 'new' ) {
 861                         return $this->getCurrentText();
 862                 }
 863                 $revision = $this->mArticle->getRevisionFetched();
 864                 if ( $revision === null ) {
 865                         return '';
 866                 }
 867                 return $this->mArticle->getContent();
 868         }
 869
 870         /**
 871          * Get the actual text of the page. This is basically similar to
 872          * WikiPage::getRawText() except that when the page doesn't exist an empty
 873          * string is returned instead of false.
 874          *
 875          * @since 1.19
 876          * @return string
 877          */
 878         private function getCurrentText() {
 879                 $text = $this->mArticle->getRawText();
 880                 if ( $text === false ) {
 881                         return '';
 882                 } else {
 883                         return $text;
 884                 }
 885         }
 886
 887         /**
 888          * Use this method before edit() to preload some text into the edit box
 889          *
 890          * @param $text string
 891          */
 892         public function setPreloadedText( $text ) {
 893                 $this->mPreloadText = $text;
 894         }
 895
 896         /**
 897          * Get the contents to be preloaded into the box, either set by
 898          * an earlier setPreloadText() or by loading the given page.
 899          *
 900          * @param $preload String: representing the title to preload from.
 901          * @return String
 902          */
 903         protected function getPreloadedText( $preload ) {
 904                 global $wgUser, $wgParser;
 905
 906                 if ( !empty( $this->mPreloadText ) ) {
 907                         return $this->mPreloadText;
 908                 }
 909
 910                 if ( $preload === '' ) {
 911                         return '';
 912                 }
 913
 914                 $title = Title::newFromText( $preload );
 915                 # Check for existence to avoid getting MediaWiki:Noarticletext
 916                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 917                         return '';
 918                 }
 919
 920                 $page = WikiPage::factory( $title );
 921                 if ( $page->isRedirect() ) {
 922                         $title = $page->getRedirectTarget();
 923                         # Same as before
 924                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 925                                 return '';
 926                         }
 927                         $page = WikiPage::factory( $title );
 928                 }
 929
 930                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 931                 return $wgParser->getPreloadText( $page->getRawText(), $title, $parserOptions );
 932         }
 933
 934         /**
 935          * Make sure the form isn't faking a user's credentials.
 936          *
 937          * @param $request WebRequest
 938          * @return bool
 939          * @private
 940          */
 941         function tokenOk( &$request ) {
 942                 global $wgUser;
 943                 $token = $request->getVal( 'wpEditToken' );
 944                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 945                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 946                 return $this->mTokenOk;
 947         }
 948
 949         /**
 950          * Attempt submission
 951          * @return bool false if output is done, true if the rest of the form should be displayed
 952          */
 953         function attemptSave() {
 954                 global $wgUser, $wgOut;
 955
 956                 $resultDetails = false;
 957                 # Allow bots to exempt some edits from bot flagging
 958                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
 959                 $status = $this->internalAttemptSave( $resultDetails, $bot );
 960                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
 961
 962                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
 963                         $this->didSave = true;
 964                 }
 965
 966                 switch ( $status->value ) {
 967                         case self::AS_HOOK_ERROR_EXPECTED:
 968                         case self::AS_CONTENT_TOO_BIG:
 969                         case self::AS_ARTICLE_WAS_DELETED:
 970                         case self::AS_CONFLICT_DETECTED:
 971                         case self::AS_SUMMARY_NEEDED:
 972                         case self::AS_TEXTBOX_EMPTY:
 973                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 974                         case self::AS_END:
 975                                 return true;
 976
 977                         case self::AS_HOOK_ERROR:
 978                         case self::AS_FILTERING:
 979                                 return false;
 980
 981                         case self::AS_SUCCESS_NEW_ARTICLE:
 982                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
 983                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
 984                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
 985                                 return false;
 986
 987                         case self::AS_SUCCESS_UPDATE:
 988                                 $extraQuery = '';
 989                                 $sectionanchor = $resultDetails['sectionanchor'];
 990
 991                                 // Give extensions a chance to modify URL query on update
 992                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
 993
 994                                 if ( $resultDetails['redirect'] ) {
 995                                         if ( $extraQuery == '' ) {
 996                                                 $extraQuery = 'redirect=no';
 997                                         } else {
 998                                                 $extraQuery = 'redirect=no&' . $extraQuery;
 999                                         }
1000                                 }
1001                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1002                                 return false;
1003
1004                         case self::AS_BLANK_ARTICLE:
1005                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
1006                                 return false;
1007
1008                         case self::AS_SPAM_ERROR:
1009                                 $this->spamPageWithContent( $resultDetails['spam'] );
1010                                 return false;
1011
1012                         case self::AS_BLOCKED_PAGE_FOR_USER:
1013                                 throw new UserBlockedError( $wgUser->mBlock );
1014
1015                         case self::AS_IMAGE_REDIRECT_ANON:
1016                         case self::AS_IMAGE_REDIRECT_LOGGED:
1017                                 throw new PermissionsError( 'upload' );
1018
1019                         case self::AS_READ_ONLY_PAGE_ANON:
1020                         case self::AS_READ_ONLY_PAGE_LOGGED:
1021                                 throw new PermissionsError( 'edit' );
1022
1023                         case self::AS_READ_ONLY_PAGE:
1024                                 throw new ReadOnlyError;
1025
1026                         case self::AS_RATE_LIMITED:
1027                                 throw new ThrottledError();
1028
1029                         case self::AS_NO_CREATE_PERMISSION:
1030                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1031                                 throw new PermissionsError( $permission );
1032
1033                 }
1034                 return false;
1035         }
1036
1037         /**
1038          * Attempt submission (no UI)
1039          *
1040          * @param $result
1041          * @param $bot bool
1042          *
1043          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1044          *
1045          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1046          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1047          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1048          */
1049         function internalAttemptSave( &$result, $bot = false ) {
1050                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
1051                 global $wgMaxArticleSize;
1052
1053                 $status = Status::newGood();
1054
1055                 wfProfileIn( __METHOD__  );
1056                 wfProfileIn( __METHOD__ . '-checks' );
1057
1058                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1059                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1060                         $status->fatal( 'hookaborted' );
1061                         $status->value = self::AS_HOOK_ERROR;
1062                         wfProfileOut( __METHOD__ . '-checks' );
1063                         wfProfileOut( __METHOD__  );
1064                         return $status;
1065                 }
1066
1067                 # Check image redirect
1068                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1069                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
1070                         !$wgUser->isAllowed( 'upload' ) ) {
1071                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1072                                 $status->setResult( false, $code );
1073
1074                                 wfProfileOut( __METHOD__ . '-checks' );
1075                                 wfProfileOut( __METHOD__  );
1076
1077                                 return $status;
1078                 }
1079
1080                 # Check for spam
1081                 $match = self::matchSummarySpamRegex( $this->summary );
1082                 if ( $match === false ) {
1083                         $match = self::matchSpamRegex( $this->textbox1 );
1084                 }
1085                 if ( $match !== false ) {
1086                         $result['spam'] = $match;
1087                         $ip = $wgRequest->getIP();
1088                         $pdbk = $this->mTitle->getPrefixedDBkey();
1089                         $match = str_replace( "\n", '', $match );
1090                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1091                         $status->fatal( 'spamprotectionmatch', $match );
1092                         $status->value = self::AS_SPAM_ERROR;
1093                         wfProfileOut( __METHOD__ . '-checks' );
1094                         wfProfileOut( __METHOD__ );
1095                         return $status;
1096                 }
1097                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
1098                         # Error messages or other handling should be performed by the filter function
1099                         $status->setResult( false, self::AS_FILTERING );
1100                         wfProfileOut( __METHOD__ . '-checks' );
1101                         wfProfileOut( __METHOD__ );
1102                         return $status;
1103                 }
1104                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1105                         # Error messages etc. could be handled within the hook...
1106                         $status->fatal( 'hookaborted' );
1107                         $status->value = self::AS_HOOK_ERROR;
1108                         wfProfileOut( __METHOD__ . '-checks' );
1109                         wfProfileOut( __METHOD__ );
1110                         return $status;
1111                 } elseif ( $this->hookError != '' ) {
1112                         # ...or the hook could be expecting us to produce an error
1113                         $status->fatal( 'hookaborted' );
1114                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1115                         wfProfileOut( __METHOD__ . '-checks' );
1116                         wfProfileOut( __METHOD__ );
1117                         return $status;
1118                 }
1119
1120                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1121                         // Auto-block user's IP if the account was "hard" blocked
1122                         $wgUser->spreadAnyEditBlock();
1123                         # Check block state against master, thus 'false'.
1124                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1125                         wfProfileOut( __METHOD__ . '-checks' );
1126                         wfProfileOut( __METHOD__ );
1127                         return $status;
1128                 }
1129
1130                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1131                 if ( $this->kblength > $wgMaxArticleSize ) {
1132                         // Error will be displayed by showEditForm()
1133                         $this->tooBig = true;
1134                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1135                         wfProfileOut( __METHOD__ . '-checks' );
1136                         wfProfileOut( __METHOD__ );
1137                         return $status;
1138                 }
1139
1140                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1141                         if ( $wgUser->isAnon() ) {
1142                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1143                                 wfProfileOut( __METHOD__ . '-checks' );
1144                                 wfProfileOut( __METHOD__ );
1145                                 return $status;
1146                         } else {
1147                                 $status->fatal( 'readonlytext' );
1148                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1149                                 wfProfileOut( __METHOD__ . '-checks' );
1150                                 wfProfileOut( __METHOD__ );
1151                                 return $status;
1152                         }
1153                 }
1154
1155                 if ( wfReadOnly() ) {
1156                         $status->fatal( 'readonlytext' );
1157                         $status->value = self::AS_READ_ONLY_PAGE;
1158                         wfProfileOut( __METHOD__ . '-checks' );
1159                         wfProfileOut( __METHOD__ );
1160                         return $status;
1161                 }
1162                 if ( $wgUser->pingLimiter() ) {
1163                         $status->fatal( 'actionthrottledtext' );
1164                         $status->value = self::AS_RATE_LIMITED;
1165                         wfProfileOut( __METHOD__ . '-checks' );
1166                         wfProfileOut( __METHOD__ );
1167                         return $status;
1168                 }
1169
1170                 # If the article has been deleted while editing, don't save it without
1171                 # confirmation
1172                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1173                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1174                         wfProfileOut( __METHOD__ . '-checks' );
1175                         wfProfileOut( __METHOD__ );
1176                         return $status;
1177                 }
1178
1179                 wfProfileOut( __METHOD__ . '-checks' );
1180
1181                 # If article is new, insert it.
1182                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1183                 $new = ( $aid == 0 );
1184
1185                 if ( $new ) {
1186                         // Late check for create permission, just in case *PARANOIA*
1187                         if ( !$this->mTitle->userCan( 'create' ) ) {
1188                                 $status->fatal( 'nocreatetext' );
1189                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1190                                 wfDebug( __METHOD__ . ": no create permission\n" );
1191                                 wfProfileOut( __METHOD__ );
1192                                 return $status;
1193                         }
1194
1195                         # Don't save a new article if it's blank.
1196                         if ( $this->textbox1 == '' ) {
1197                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1198                                 wfProfileOut( __METHOD__ );
1199                                 return $status;
1200                         }
1201
1202                         // Run post-section-merge edit filter
1203                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1204                                 # Error messages etc. could be handled within the hook...
1205                                 $status->fatal( 'hookaborted' );
1206                                 $status->value = self::AS_HOOK_ERROR;
1207                                 wfProfileOut( __METHOD__ );
1208                                 return $status;
1209                         } elseif ( $this->hookError != '' ) {
1210                                 # ...or the hook could be expecting us to produce an error
1211                                 $status->fatal( 'hookaborted' );
1212                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1213                                 wfProfileOut( __METHOD__ );
1214                                 return $status;
1215                         }
1216
1217                         # Handle the user preference to force summaries here. Check if it's not a redirect.
1218                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
1219                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1220                                         $this->missingSummary = true;
1221                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1222                                         $status->value = self::AS_SUMMARY_NEEDED;
1223                                         wfProfileOut( __METHOD__ );
1224                                         return $status;
1225                                 }
1226                         }
1227
1228                         $text = $this->textbox1;
1229                         $result['sectionanchor'] = '';
1230                         if ( $this->section == 'new' ) {
1231                                 if ( $this->sectiontitle !== '' ) {
1232                                         // Insert the section title above the content.
1233                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $text;
1234
1235                                         // Jump to the new section
1236                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1237
1238                                         // If no edit summary was specified, create one automatically from the section
1239                                         // title and have it link to the new section. Otherwise, respect the summary as
1240                                         // passed.
1241                                         if ( $this->summary === '' ) {
1242                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1243                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1244                                         }
1245                                 } elseif ( $this->summary !== '' ) {
1246                                         // Insert the section title above the content.
1247                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1248
1249                                         // Jump to the new section
1250                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1251
1252                                         // Create a link to the new section from the edit summary.
1253                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1254                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1255                                 }
1256                         }
1257
1258                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1259
1260                 } else {
1261
1262                         # Article exists. Check for edit conflict.
1263
1264                         $this->mArticle->clear(); # Force reload of dates, etc.
1265                         $timestamp = $this->mArticle->getTimestamp();
1266
1267                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1268
1269                         if ( $timestamp != $this->edittime ) {
1270                                 $this->isConflict = true;
1271                                 if ( $this->section == 'new' ) {
1272                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1273                                                 $this->mArticle->getComment() == $this->summary ) {
1274                                                 // Probably a duplicate submission of a new comment.
1275                                                 // This can happen when squid resends a request after
1276                                                 // a timeout but the first one actually went through.
1277                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1278                                         } else {
1279                                                 // New comment; suppress conflict.
1280                                                 $this->isConflict = false;
1281                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1282                                         }
1283                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1284                                         # Suppress edit conflict with self, except for section edits where merging is required.
1285                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1286                                         $this->isConflict = false;
1287                                 }
1288                         }
1289
1290                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1291                         // backwards compatibility with old forms/bots).
1292                         if ( $this->sectiontitle !== '' ) {
1293                                 $sectionTitle = $this->sectiontitle;
1294                         } else {
1295                                 $sectionTitle = $this->summary;
1296                         }
1297
1298                         if ( $this->isConflict ) {
1299                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1300                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime );
1301                         } else {
1302                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1303                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle );
1304                         }
1305                         if ( is_null( $text ) ) {
1306                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1307                                 $this->isConflict = true;
1308                                 $text = $this->textbox1; // do not try to merge here!
1309                         } elseif ( $this->isConflict ) {
1310                                 # Attempt merge
1311                                 if ( $this->mergeChangesInto( $text ) ) {
1312                                         // Successful merge! Maybe we should tell the user the good news?
1313                                         $this->isConflict = false;
1314                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1315                                 } else {
1316                                         $this->section = '';
1317                                         $this->textbox1 = $text;
1318                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1319                                 }
1320                         }
1321
1322                         if ( $this->isConflict ) {
1323                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1324                                 wfProfileOut( __METHOD__ );
1325                                 return $status;
1326                         }
1327
1328                         // Run post-section-merge edit filter
1329                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1330                                 # Error messages etc. could be handled within the hook...
1331                                 $status->fatal( 'hookaborted' );
1332                                 $status->value = self::AS_HOOK_ERROR;
1333                                 wfProfileOut( __METHOD__ );
1334                                 return $status;
1335                         } elseif ( $this->hookError != '' ) {
1336                                 # ...or the hook could be expecting us to produce an error
1337                                 $status->fatal( 'hookaborted' );
1338                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1339                                 wfProfileOut( __METHOD__ );
1340                                 return $status;
1341                         }
1342
1343                         # Handle the user preference to force summaries here, but not for null edits
1344                         if ( $this->section != 'new' && !$this->allowBlankSummary
1345                                 && $this->getOriginalContent() != $text
1346                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1347                         {
1348                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1349                                         $this->missingSummary = true;
1350                                         $status->fatal( 'missingsummary' );
1351                                         $status->value = self::AS_SUMMARY_NEEDED;
1352                                         wfProfileOut( __METHOD__ );
1353                                         return $status;
1354                                 }
1355                         }
1356
1357                         # And a similar thing for new sections
1358                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1359                                 if ( trim( $this->summary ) == '' ) {
1360                                         $this->missingSummary = true;
1361                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1362                                         $status->value = self::AS_SUMMARY_NEEDED;
1363                                         wfProfileOut( __METHOD__ );
1364                                         return $status;
1365                                 }
1366                         }
1367
1368                         # All's well
1369                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1370                         $sectionanchor = '';
1371                         if ( $this->section == 'new' ) {
1372                                 if ( $this->textbox1 == '' ) {
1373                                         $this->missingComment = true;
1374                                         $status->fatal( 'missingcommenttext' );
1375                                         $status->value = self::AS_TEXTBOX_EMPTY;
1376                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1377                                         wfProfileOut( __METHOD__ );
1378                                         return $status;
1379                                 }
1380                                 if ( $this->sectiontitle !== '' ) {
1381                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1382                                         // If no edit summary was specified, create one automatically from the section
1383                                         // title and have it link to the new section. Otherwise, respect the summary as
1384                                         // passed.
1385                                         if ( $this->summary === '' ) {
1386                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1387                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1388                                         }
1389                                 } elseif ( $this->summary !== '' ) {
1390                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1391                                         # This is a new section, so create a link to the new section
1392                                         # in the revision summary.
1393                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1394                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1395                                 }
1396                         } elseif ( $this->section != '' ) {
1397                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1398                                 # XXX: might be better to integrate this into Article::replaceSection
1399                                 # for duplicate heading checking and maybe parsing
1400                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1401                                 # we can't deal with anchors, includes, html etc in the header for now,
1402                                 # headline would need to be parsed to improve this
1403                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1404                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1405                                 }
1406                         }
1407                         $result['sectionanchor'] = $sectionanchor;
1408                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1409
1410                         // Save errors may fall down to the edit form, but we've now
1411                         // merged the section into full text. Clear the section field
1412                         // so that later submission of conflict forms won't try to
1413                         // replace that into a duplicated mess.
1414                         $this->textbox1 = $text;
1415                         $this->section = '';
1416
1417                         $status->value = self::AS_SUCCESS_UPDATE;
1418                 }
1419
1420                 // Check for length errors again now that the section is merged in
1421                 $this->kblength = (int)( strlen( $text ) / 1024 );
1422                 if ( $this->kblength > $wgMaxArticleSize ) {
1423                         $this->tooBig = true;
1424                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1425                         wfProfileOut( __METHOD__ );
1426                         return $status;
1427                 }
1428
1429                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1430                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1431                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1432                         ( $bot ? EDIT_FORCE_BOT : 0 );
1433
1434                 $doEditStatus = $this->mArticle->doEdit( $text, $this->summary, $flags );
1435
1436                 if ( $doEditStatus->isOK() ) {
1437                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1438                         $this->commitWatch();
1439                         wfProfileOut( __METHOD__ );
1440                         return $status;
1441                 } else {
1442                         $this->isConflict = true;
1443                         $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1444                         wfProfileOut( __METHOD__ );
1445                         return $doEditStatus;
1446                 }
1447         }
1448
1449         /**
1450          * Commit the change of watch status
1451          */
1452         protected function commitWatch() {
1453                 global $wgUser;
1454                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1455                         $dbw = wfGetDB( DB_MASTER );
1456                         $dbw->begin();
1457                         if ( $this->watchthis ) {
1458                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1459                         } else {
1460                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1461                         }
1462                         $dbw->commit();
1463                 }
1464         }
1465
1466         /**
1467          * Check if no edits were made by other users since
1468          * the time a user started editing the page. Limit to
1469          * 50 revisions for the sake of performance.
1470          *
1471          * @param $id int
1472          * @param $edittime string
1473          *
1474          * @return bool
1475          */
1476         protected function userWasLastToEdit( $id, $edittime ) {
1477                 if( !$id ) return false;
1478                 $dbw = wfGetDB( DB_MASTER );
1479                 $res = $dbw->select( 'revision',
1480                         'rev_user',
1481                         array(
1482                                 'rev_page' => $this->mTitle->getArticleId(),
1483                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1484                         ),
1485                         __METHOD__,
1486                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1487                 foreach ( $res as $row ) {
1488                         if( $row->rev_user != $id ) {
1489                                 return false;
1490                         }
1491                 }
1492                 return true;
1493         }
1494
1495         /**
1496          * @private
1497          * @todo document
1498          *
1499          * @parma $editText string
1500          *
1501          * @return bool
1502          */
1503         function mergeChangesInto( &$editText ){
1504                 wfProfileIn( __METHOD__ );
1505
1506                 $db = wfGetDB( DB_MASTER );
1507
1508                 // This is the revision the editor started from
1509                 $baseRevision = $this->getBaseRevision();
1510                 if ( is_null( $baseRevision ) ) {
1511                         wfProfileOut( __METHOD__ );
1512                         return false;
1513                 }
1514                 $baseText = $baseRevision->getText();
1515
1516                 // The current state, we want to merge updates into it
1517                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1518                 if ( is_null( $currentRevision ) ) {
1519                         wfProfileOut( __METHOD__ );
1520                         return false;
1521                 }
1522                 $currentText = $currentRevision->getText();
1523
1524                 $result = '';
1525                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1526                         $editText = $result;
1527                         wfProfileOut( __METHOD__ );
1528                         return true;
1529                 } else {
1530                         wfProfileOut( __METHOD__ );
1531                         return false;
1532                 }
1533         }
1534
1535         /**
1536          * @return Revision
1537          */
1538         function getBaseRevision() {
1539                 if ( !$this->mBaseRevision ) {
1540                         $db = wfGetDB( DB_MASTER );
1541                         $baseRevision = Revision::loadFromTimestamp(
1542                                 $db, $this->mTitle, $this->edittime );
1543                         return $this->mBaseRevision = $baseRevision;
1544                 } else {
1545                         return $this->mBaseRevision;
1546                 }
1547         }
1548
1549         /**
1550          * Check given input text against $wgSpamRegex, and return the text of the first match.
1551          *
1552          * @param $text string
1553          *
1554          * @return string|false matching string or false
1555          */
1556         public static function matchSpamRegex( $text ) {
1557                 global $wgSpamRegex;
1558                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1559                 $regexes = (array)$wgSpamRegex;
1560                 return self::matchSpamRegexInternal( $text, $regexes );
1561         }
1562
1563         /**
1564          * Check given input text against $wgSpamRegex, and return the text of the first match.
1565          *
1566          * @parma $text string
1567          *
1568          * @return string|false  matching string or false
1569          */
1570         public static function matchSummarySpamRegex( $text ) {
1571                 global $wgSummarySpamRegex;
1572                 $regexes = (array)$wgSummarySpamRegex;
1573                 return self::matchSpamRegexInternal( $text, $regexes );
1574         }
1575
1576         /**
1577          * @param $text string
1578          * @param $regexes array
1579          * @return bool|string
1580          */
1581         protected static function matchSpamRegexInternal( $text, $regexes ) {
1582                 foreach( $regexes as $regex ) {
1583                         $matches = array();
1584                         if( preg_match( $regex, $text, $matches ) ) {
1585                                 return $matches[0];
1586                         }
1587                 }
1588                 return false;
1589         }
1590
1591         function setHeaders() {
1592                 global $wgOut, $wgUser;
1593
1594                 $wgOut->addModules( 'mediawiki.action.edit' );
1595
1596                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1597                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1598                 }
1599                 // Bug #19334: textarea jumps when editing articles in IE8
1600                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1601
1602                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1603
1604                 # Enabled article-related sidebar, toplinks, etc.
1605                 $wgOut->setArticleRelated( true );
1606
1607                 if ( $this->isConflict ) {
1608                         $wgOut->setPageTitle( wfMessage( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1609                 } elseif ( $this->section != '' ) {
1610                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1611                         $wgOut->setPageTitle( wfMessage( $msg, $this->getContextTitle()->getPrefixedText() ) );
1612                 } else {
1613                         # Use the title defined by DISPLAYTITLE magic word when present
1614                         if ( isset( $this->mParserOutput )
1615                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1616                                 $title = $dt;
1617                         } else {
1618                                 $title = $this->getContextTitle()->getPrefixedText();
1619                         }
1620                         $wgOut->setPageTitle( wfMessage( 'editing', $title ) );
1621                 }
1622         }
1623
1624         /**
1625          * Show all applicable editing introductions
1626          */
1627         protected function showIntro() {
1628                 global $wgOut, $wgUser;
1629                 if ( $this->suppressIntro ) {
1630                         return;
1631                 }
1632
1633                 $namespace = $this->mTitle->getNamespace();
1634
1635                 if ( $namespace == NS_MEDIAWIKI ) {
1636                         # Show a warning if editing an interface message
1637                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1638                 }
1639
1640                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1641                 # Show log extract when the user is currently blocked
1642                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1643                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1644                         $username = $parts[0];
1645                         $user = User::newFromName( $username, false /* allow IP users*/ );
1646                         $ip = User::isIP( $username );
1647                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1648                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1649                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1650                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1651                                 LogEventsList::showLogExtract(
1652                                         $wgOut,
1653                                         'block',
1654                                         $user->getUserPage(),
1655                                         '',
1656                                         array(
1657                                                 'lim' => 1,
1658                                                 'showIfEmpty' => false,
1659                                                 'msgKey' => array(
1660                                                         'blocked-notice-logextract',
1661                                                         $user->getName() # Support GENDER in notice
1662                                                 )
1663                                         )
1664                                 );
1665                         }
1666                 }
1667                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1668                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1669                         if ( $wgUser->isLoggedIn() ) {
1670                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1671                         } else {
1672                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1673                         }
1674                 }
1675                 # Give a notice if the user is editing a deleted/moved page...
1676                 if ( !$this->mTitle->exists() ) {
1677                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1678                                 '', array( 'lim' => 10,
1679                                            'conds' => array( "log_action != 'revision'" ),
1680                                            'showIfEmpty' => false,
1681                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
1682                         );
1683                 }
1684         }
1685
1686         /**
1687          * Attempt to show a custom editing introduction, if supplied
1688          *
1689          * @return bool
1690          */
1691         protected function showCustomIntro() {
1692                 if ( $this->editintro ) {
1693                         $title = Title::newFromText( $this->editintro );
1694                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1695                                 global $wgOut;
1696                                 // Added using template syntax, to take <noinclude>'s into account.
1697                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1698                                 return true;
1699                         } else {
1700                                 return false;
1701                         }
1702                 } else {
1703                         return false;
1704                 }
1705         }
1706
1707         /**
1708          * Send the edit form and related headers to $wgOut
1709          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1710          *     during form output near the top, for captchas and the like.
1711          */
1712         function showEditForm( $formCallback = null ) {
1713                 global $wgOut, $wgUser;
1714
1715                 wfProfileIn( __METHOD__ );
1716
1717                 #need to parse the preview early so that we know which templates are used,
1718                 #otherwise users with "show preview after edit box" will get a blank list
1719                 #we parse this near the beginning so that setHeaders can do the title
1720                 #setting work instead of leaving it in getPreviewText
1721                 $previewOutput = '';
1722                 if ( $this->formtype == 'preview' ) {
1723                         $previewOutput = $this->getPreviewText();
1724                 }
1725
1726                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1727
1728                 $this->setHeaders();
1729
1730                 if ( $this->showHeader() === false ) {
1731                         wfProfileOut( __METHOD__ );
1732                         return;
1733                 }
1734
1735                 $wgOut->addHTML( $this->editFormPageTop );
1736
1737                 if ( $wgUser->getOption( 'previewontop' ) ) {
1738                         $this->displayPreviewArea( $previewOutput, true );
1739                 }
1740
1741                 $wgOut->addHTML( $this->editFormTextTop );
1742
1743                 $showToolbar = true;
1744                 if ( $this->wasDeletedSinceLastEdit() ) {
1745                         if ( $this->formtype == 'save' ) {
1746                                 // Hide the toolbar and edit area, user can click preview to get it back
1747                                 // Add an confirmation checkbox and explanation.
1748                                 $showToolbar = false;
1749                         } else {
1750                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1751                                         'deletedwhileediting' );
1752                         }
1753                 }
1754
1755                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => 'editform', 'name' => 'editform',
1756                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1757                         'enctype' => 'multipart/form-data' ) ) );
1758
1759                 if ( is_callable( $formCallback ) ) {
1760                         call_user_func_array( $formCallback, array( &$wgOut ) );
1761                 }
1762
1763                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1764
1765                 // Put these up at the top to ensure they aren't lost on early form submission
1766                 $this->showFormBeforeText();
1767
1768                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1769                         $username = $this->lastDelete->user_name;
1770                         $comment = $this->lastDelete->log_comment;
1771
1772                         // It is better to not parse the comment at all than to have templates expanded in the middle
1773                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1774                         $key = $comment === ''
1775                                 ? 'confirmrecreate-noreason'
1776                                 : 'confirmrecreate';
1777                         $wgOut->addHTML(
1778                                 '<div class="mw-confirm-recreate">' .
1779                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1780                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1781                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1782                                 ) .
1783                                 '</div>'
1784                         );
1785                 }
1786
1787                 # If a blank edit summary was previously provided, and the appropriate
1788                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1789                 # user being bounced back more than once in the event that a summary
1790                 # is not required.
1791                 #####
1792                 # For a bit more sophisticated detection of blank summaries, hash the
1793                 # automatic one and pass that in the hidden field wpAutoSummary.
1794                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
1795                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1796                 }
1797
1798                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1799                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1800
1801                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1802
1803                 if ( $this->section == 'new' ) {
1804                         $this->showSummaryInput( true, $this->summary );
1805                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1806                 }
1807
1808                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1809
1810                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
1811                         $wgOut->addHTML( EditPage::getEditToolbar() );
1812                 }
1813
1814                 if ( $this->isConflict ) {
1815                         // In an edit conflict bypass the overrideable content form method
1816                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1817                         // resolved between page source edits and custom ui edits using the
1818                         // custom edit ui.
1819                         $this->textbox2 = $this->textbox1;
1820                         $this->textbox1 = $this->getCurrentText();
1821
1822                         $this->showTextbox1();
1823                 } else {
1824                         $this->showContentForm();
1825                 }
1826
1827                 $wgOut->addHTML( $this->editFormTextAfterContent );
1828
1829                 $wgOut->addWikiText( $this->getCopywarn() );
1830
1831                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1832
1833                 $this->showStandardInputs();
1834
1835                 $this->showFormAfterText();
1836
1837                 $this->showTosSummary();
1838
1839                 $this->showEditTools();
1840
1841                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
1842
1843                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
1844                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
1845
1846                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
1847                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
1848
1849                 if ( $this->isConflict ) {
1850                         $this->showConflict();
1851                 }
1852
1853                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
1854
1855                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1856                         $this->displayPreviewArea( $previewOutput, false );
1857                 }
1858
1859                 wfProfileOut( __METHOD__ );
1860         }
1861
1862         /**
1863          * Extract the section title from current section text, if any.
1864          *
1865          * @param string $text
1866          * @return Mixed|string or false
1867          */
1868         public static function extractSectionTitle( $text ) {
1869                 preg_match( "/^(=+)(.+)\\1(\n|$)/i", $text, $matches );
1870                 if ( !empty( $matches[2] ) ) {
1871                         global $wgParser;
1872                         return $wgParser->stripSectionName(trim($matches[2]));
1873                 } else {
1874                         return false;
1875                 }
1876         }
1877
1878         protected function showHeader() {
1879                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1880
1881                 if ( $this->mTitle->isTalkPage() ) {
1882                         $wgOut->addWikiMsg( 'talkpagetext' );
1883                 }
1884
1885                 # Optional notices on a per-namespace and per-page basis
1886                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
1887                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
1888                 if ( $editnotice_ns_message->exists() ) {
1889                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
1890                 }
1891                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1892                         $parts = explode( '/', $this->mTitle->getDBkey() );
1893                         $editnotice_base = $editnotice_ns;
1894                         while ( count( $parts ) > 0 ) {
1895                                 $editnotice_base .= '-'.array_shift( $parts );
1896                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
1897                                 if ( $editnotice_base_msg->exists() ) {
1898                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
1899                                 }
1900                         }
1901                 } else {
1902                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
1903                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
1904                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
1905                         if ( $editnoticeMsg->exists() ) {
1906                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
1907                         }
1908                 }
1909
1910                 if ( $this->isConflict ) {
1911                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1912                         $this->edittime = $this->mArticle->getTimestamp();
1913                 } else {
1914                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1915                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1916                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1917                                 // Someone is welcome to try refactoring though
1918                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1919                                 return false;
1920                         }
1921
1922                         if ( $this->section != '' && $this->section != 'new' ) {
1923                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1924                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
1925                                         if ( $sectionTitle !== false ) {
1926                                                 $this->summary = "/* $sectionTitle */ ";
1927                                         }
1928                                 }
1929                         }
1930
1931                         if ( $this->missingComment ) {
1932                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1933                         }
1934
1935                         if ( $this->missingSummary && $this->section != 'new' ) {
1936                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1937                         }
1938
1939                         if ( $this->missingSummary && $this->section == 'new' ) {
1940                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1941                         }
1942
1943                         if ( $this->hookError !== '' ) {
1944                                 $wgOut->addWikiText( $this->hookError );
1945                         }
1946
1947                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1948                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1949                         }
1950
1951                         if ( $this->section != 'new' ) {
1952                                 $revision = $this->mArticle->getRevisionFetched();
1953                                 if ( $revision ) {
1954                                         // Let sysop know that this will make private content public if saved
1955
1956                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
1957                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1958                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
1959                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1960                                         }
1961
1962                                         if ( !$revision->isCurrent() ) {
1963                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
1964                                                 $wgOut->addWikiMsg( 'editingold' );
1965                                         }
1966                                 } elseif ( $this->mTitle->exists() ) {
1967                                         // Something went wrong
1968
1969                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
1970                                                 array( 'missing-article', $this->mTitle->getPrefixedText(),
1971                                                 wfMsgNoTrans( 'missingarticle-rev', $this->oldid ) ) );
1972                                 }
1973                         }
1974                 }
1975
1976                 if ( wfReadOnly() ) {
1977                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1978                 } elseif ( $wgUser->isAnon() ) {
1979                         if ( $this->formtype != 'preview' ) {
1980                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1981                         } else {
1982                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1983                         }
1984                 } else {
1985                         if ( $this->isCssJsSubpage ) {
1986                                 # Check the skin exists
1987                                 if ( $this->isWrongCaseCssJsPage ) {
1988                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
1989                                 }
1990                                 if ( $this->formtype !== 'preview' ) {
1991                                         if ( $this->isCssSubpage )
1992                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
1993                                         if ( $this->isJsSubpage )
1994                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
1995                                 }
1996                         }
1997                 }
1998
1999                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2000                         # Is the title semi-protected?
2001                         if ( $this->mTitle->isSemiProtected() ) {
2002                                 $noticeMsg = 'semiprotectedpagewarning';
2003                         } else {
2004                                 # Then it must be protected based on static groups (regular)
2005                                 $noticeMsg = 'protectedpagewarning';
2006                         }
2007                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2008                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2009                 }
2010                 if ( $this->mTitle->isCascadeProtected() ) {
2011                         # Is this page under cascading protection from some source pages?
2012                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
2013                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2014                         $cascadeSourcesCount = count( $cascadeSources );
2015                         if ( $cascadeSourcesCount > 0 ) {
2016                                 # Explain, and list the titles responsible
2017                                 foreach( $cascadeSources as $page ) {
2018                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2019                                 }
2020                         }
2021                         $notice .= '</div>';
2022                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2023                 }
2024                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2025                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2026                                 array(  'lim' => 1,
2027                                         'showIfEmpty' => false,
2028                                         'msgKey' => array( 'titleprotectedwarning' ),
2029                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2030                 }
2031
2032                 if ( $this->kblength === false ) {
2033                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2034                 }
2035
2036                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2037                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2038                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
2039                 } else {
2040                         if( !wfMessage('longpage-hint')->isDisabled() ) {
2041                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2042                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2043                                 );
2044                         }
2045                 }
2046         }
2047
2048         /**
2049          * Standard summary input and label (wgSummary), abstracted so EditPage
2050          * subclasses may reorganize the form.
2051          * Note that you do not need to worry about the label's for=, it will be
2052          * inferred by the id given to the input. You can remove them both by
2053          * passing array( 'id' => false ) to $userInputAttrs.
2054          *
2055          * @param $summary string The value of the summary input
2056          * @param $labelText string The html to place inside the label
2057          * @param $inputAttrs array of attrs to use on the input
2058          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2059          *
2060          * @return array An array in the format array( $label, $input )
2061          */
2062         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
2063                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
2064                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
2065                         'id' => 'wpSummary',
2066                         'maxlength' => '200',
2067                         'tabindex' => '1',
2068                         'size' => 60,
2069                         'spellcheck' => 'true',
2070                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2071
2072                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
2073                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2074                         'id' => "wpSummaryLabel"
2075                 );
2076
2077                 $label = null;
2078                 if ( $labelText ) {
2079                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2080                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2081                 }
2082
2083                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2084
2085                 return array( $label, $input );
2086         }
2087
2088         /**
2089          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2090          *                          up top, or false if this is the comment summary
2091          *                          down below the textarea
2092          * @param $summary String: The text of the summary to display
2093          * @return String
2094          */
2095         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2096                 global $wgOut, $wgContLang;
2097                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2098                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2099                 if ( $isSubjectPreview ) {
2100                         if ( $this->nosummary ) {
2101                                 return;
2102                         }
2103                 } else {
2104                         if ( !$this->mShowSummaryField ) {
2105                                 return;
2106                         }
2107                 }
2108                 $summary = $wgContLang->recodeForEdit( $summary );
2109                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2110                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
2111                 $wgOut->addHTML("{$label} {$input}");
2112         }
2113
2114         /**
2115          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2116          *                          up top, or false if this is the comment summary
2117          *                          down below the textarea
2118          * @param $summary String: the text of the summary to display
2119          * @return String
2120          */
2121         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2122                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2123                         return "";
2124
2125                 global $wgParser;
2126
2127                 if ( $isSubjectPreview )
2128                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2129
2130                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2131
2132                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2133                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2134         }
2135
2136         protected function showFormBeforeText() {
2137                 global $wgOut;
2138                 $section = htmlspecialchars( $this->section );
2139                 $wgOut->addHTML( <<<HTML
2140 <input type='hidden' value="{$section}" name="wpSection" />
2141 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2142 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2143 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2144
2145 HTML
2146                 );
2147                 if ( !$this->checkUnicodeCompliantBrowser() )
2148                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
2149         }
2150
2151         protected function showFormAfterText() {
2152                 global $wgOut, $wgUser;
2153                 /**
2154                  * To make it harder for someone to slip a user a page
2155                  * which submits an edit form to the wiki without their
2156                  * knowledge, a random token is associated with the login
2157                  * session. If it's not passed back with the submission,
2158                  * we won't save the page, or render user JavaScript and
2159                  * CSS previews.
2160                  *
2161                  * For anon editors, who may not have a session, we just
2162                  * include the constant suffix to prevent editing from
2163                  * broken text-mangling proxies.
2164                  */
2165                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2166         }
2167
2168         /**
2169          * Subpage overridable method for printing the form for page content editing
2170          * By default this simply outputs wpTextbox1
2171          * Subclasses can override this to provide a custom UI for editing;
2172          * be it a form, or simply wpTextbox1 with a modified content that will be
2173          * reverse modified when extracted from the post data.
2174          * Note that this is basically the inverse for importContentFormData
2175          */
2176         protected function showContentForm() {
2177                 $this->showTextbox1();
2178         }
2179
2180         /**
2181          * Method to output wpTextbox1
2182          * The $textoverride method can be used by subclasses overriding showContentForm
2183          * to pass back to this method.
2184          *
2185          * @param $customAttribs An array of html attributes to use in the textarea
2186          * @param $textoverride String: optional text to override $this->textarea1 with
2187          */
2188         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2189                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2190                         $attribs = array( 'style' => 'display:none;' );
2191                 } else {
2192                         $classes = array(); // Textarea CSS
2193                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2194                                 # Is the title semi-protected?
2195                                 if ( $this->mTitle->isSemiProtected() ) {
2196                                         $classes[] = 'mw-textarea-sprotected';
2197                                 } else {
2198                                         # Then it must be protected based on static groups (regular)
2199                                         $classes[] = 'mw-textarea-protected';
2200                                 }
2201                                 # Is the title cascade-protected?
2202                                 if ( $this->mTitle->isCascadeProtected() ) {
2203                                         $classes[] = 'mw-textarea-cprotected';
2204                                 }
2205                         }
2206
2207                         $attribs = array( 'tabindex' => 1 );
2208
2209                         if ( is_array( $customAttribs ) ) {
2210                                 $attribs += $customAttribs;
2211                         }
2212
2213                         if ( count( $classes ) ) {
2214                                 if ( isset( $attribs['class'] ) ) {
2215                                         $classes[] = $attribs['class'];
2216                                 }
2217                                 $attribs['class'] = implode( ' ', $classes );
2218                         }
2219                 }
2220
2221                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2222         }
2223
2224         protected function showTextbox2() {
2225                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2226         }
2227
2228         protected function showTextbox( $content, $name, $customAttribs = array() ) {
2229                 global $wgOut, $wgUser;
2230
2231                 $wikitext = $this->safeUnicodeOutput( $content );
2232                 if ( strval($wikitext) !== '' ) {
2233                         // Ensure there's a newline at the end, otherwise adding lines
2234                         // is awkward.
2235                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2236                         // mode will show an extra newline. A bit annoying.
2237                         $wikitext .= "\n";
2238                 }
2239
2240                 $attribs = $customAttribs + array(
2241                         'accesskey' => ',',
2242                         'id'   => $name,
2243                         'rows' => $wgUser->getIntOption( 'rows' ),
2244                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2245                 );
2246
2247                 $pageLang = $this->mTitle->getPageLanguage();
2248                 $attribs['lang'] = $pageLang->getCode();
2249                 $attribs['dir'] = $pageLang->getDir();
2250
2251                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2252         }
2253
2254         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2255                 global $wgOut;
2256                 $classes = array();
2257                 if ( $isOnTop )
2258                         $classes[] = 'ontop';
2259
2260                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2261
2262                 if ( $this->formtype != 'preview' )
2263                         $attribs['style'] = 'display: none;';
2264
2265                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2266
2267                 if ( $this->formtype == 'preview' ) {
2268                         $this->showPreview( $previewOutput );
2269                 }
2270
2271                 $wgOut->addHTML( '</div>' );
2272
2273                 if ( $this->formtype == 'diff') {
2274                         $this->showDiff();
2275                 }
2276         }
2277
2278         /**
2279          * Append preview output to $wgOut.
2280          * Includes category rendering if this is a category page.
2281          *
2282          * @param $text String: the HTML to be output for the preview.
2283          */
2284         protected function showPreview( $text ) {
2285                 global $wgOut;
2286                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
2287                         $this->mArticle->openShowCategory();
2288                 }
2289                 # This hook seems slightly odd here, but makes things more
2290                 # consistent for extensions.
2291                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
2292                 $wgOut->addHTML( $text );
2293                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2294                         $this->mArticle->closeShowCategory();
2295                 }
2296         }
2297
2298         /**
2299          * Get a diff between the current contents of the edit box and the
2300          * version of the page we're editing from.
2301          *
2302          * If this is a section edit, we'll replace the section as for final
2303          * save and then make a comparison.
2304          */
2305         function showDiff() {
2306                 global $wgUser, $wgContLang, $wgParser, $wgOut;
2307
2308                 $oldtext = $this->getOriginalContent();
2309                 $newtext = $this->mArticle->replaceSection(
2310                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2311
2312                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2313
2314                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2315                 $newtext = $wgParser->preSaveTransform( $newtext, $this->mTitle, $wgUser, $popts );
2316
2317                 if ( $oldtext !== false  || $newtext != '' ) {
2318                         $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2319                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2320
2321                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2322                         $de->setText( $oldtext, $newtext );
2323                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2324                         $de->showDiffStyle();
2325                 } else {
2326                         $difftext = '';
2327                 }
2328
2329                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2330         }
2331
2332         /**
2333          * Give a chance for site and per-namespace customizations of
2334          * terms of service summary link that might exist separately
2335          * from the copyright notice.
2336          *
2337          * This will display between the save button and the edit tools,
2338          * so should remain short!
2339          */
2340         protected function showTosSummary() {
2341                 $msg = 'editpage-tos-summary';
2342                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2343                 if( !wfMessage( $msg )->isDisabled() ) {
2344                         global $wgOut;
2345                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2346                         $wgOut->addWikiMsg( $msg );
2347                         $wgOut->addHTML( '</div>' );
2348                 }
2349         }
2350
2351         protected function showEditTools() {
2352                 global $wgOut;
2353                 $wgOut->addHTML( '<div class="mw-editTools">' .
2354                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2355                         '</div>' );
2356         }
2357
2358         protected function getCopywarn() {
2359                 global $wgRightsText;
2360                 if ( $wgRightsText ) {
2361                         $copywarnMsg = array( 'copyrightwarning',
2362                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2363                                 $wgRightsText );
2364                 } else {
2365                         $copywarnMsg = array( 'copyrightwarning2',
2366                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2367                 }
2368                 // Allow for site and per-namespace customization of contribution/copyright notice.
2369                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2370
2371                 return "<div id=\"editpage-copywarn\">\n" .
2372                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
2373         }
2374
2375         protected function showStandardInputs( &$tabindex = 2 ) {
2376                 global $wgOut;
2377                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2378
2379                 if ( $this->section != 'new' ) {
2380                         $this->showSummaryInput( false, $this->summary );
2381                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2382                 }
2383
2384                 $checkboxes = $this->getCheckboxes( $tabindex,
2385                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2386                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2387                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2388                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2389
2390                 $cancel = $this->getCancelLink();
2391                 if ( $cancel !== '' ) {
2392                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2393                 }
2394                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2395                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
2396                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
2397                         htmlspecialchars( wfMsg( 'newwindow' ) );
2398                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2399                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2400         }
2401
2402         /**
2403          * Show an edit conflict. textbox1 is already shown in showEditForm().
2404          * If you want to use another entry point to this function, be careful.
2405          */
2406         protected function showConflict() {
2407                 global $wgOut;
2408
2409                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2410                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2411
2412                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2413                         $de->setText( $this->textbox2, $this->textbox1 );
2414                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2415
2416                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2417                         $this->showTextbox2();
2418                 }
2419         }
2420
2421         /**
2422          * @return string
2423          */
2424         public function getCancelLink() {
2425                 $cancelParams = array();
2426                 if ( !$this->isConflict && $this->oldid > 0 ) {
2427                         $cancelParams['oldid'] = $this->oldid;
2428                 }
2429
2430                 return Linker::linkKnown(
2431                         $this->getContextTitle(),
2432                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2433                         array( 'id' => 'mw-editform-cancel' ),
2434                         $cancelParams
2435                 );
2436         }
2437
2438         /**
2439          * Returns the URL to use in the form's action attribute.
2440          * This is used by EditPage subclasses when simply customizing the action
2441          * variable in the constructor is not enough. This can be used when the
2442          * EditPage lives inside of a Special page rather than a custom page action.
2443          *
2444          * @param $title Title object for which is being edited (where we go to for &action= links)
2445          * @return string
2446          */
2447         protected function getActionURL( Title $title ) {
2448                 return $title->getLocalURL( array( 'action' => $this->action ) );
2449         }
2450
2451         /**
2452          * Check if a page was deleted while the user was editing it, before submit.
2453          * Note that we rely on the logging table, which hasn't been always there,
2454          * but that doesn't matter, because this only applies to brand new
2455          * deletes.
2456          */
2457         protected function wasDeletedSinceLastEdit() {
2458                 if ( $this->deletedSinceEdit !== null ) {
2459                         return $this->deletedSinceEdit;
2460                 }
2461
2462                 $this->deletedSinceEdit = false;
2463
2464                 if ( $this->mTitle->isDeletedQuick() ) {
2465                         $this->lastDelete = $this->getLastDelete();
2466                         if ( $this->lastDelete ) {
2467                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2468                                 if ( $deleteTime > $this->starttime ) {
2469                                         $this->deletedSinceEdit = true;
2470                                 }
2471                         }
2472                 }
2473
2474                 return $this->deletedSinceEdit;
2475         }
2476
2477         protected function getLastDelete() {
2478                 $dbr = wfGetDB( DB_SLAVE );
2479                 $data = $dbr->selectRow(
2480                         array( 'logging', 'user' ),
2481                         array( 'log_type',
2482                                    'log_action',
2483                                    'log_timestamp',
2484                                    'log_user',
2485                                    'log_namespace',
2486                                    'log_title',
2487                                    'log_comment',
2488                                    'log_params',
2489                                    'log_deleted',
2490                                    'user_name' ),
2491                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2492                                    'log_title' => $this->mTitle->getDBkey(),
2493                                    'log_type' => 'delete',
2494                                    'log_action' => 'delete',
2495                                    'user_id=log_user' ),
2496                         __METHOD__,
2497                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2498                 );
2499                 // Quick paranoid permission checks...
2500                 if( is_object( $data ) ) {
2501                         if( $data->log_deleted & LogPage::DELETED_USER )
2502                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2503                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
2504                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2505                 }
2506                 return $data;
2507         }
2508
2509         /**
2510          * Get the rendered text for previewing.
2511          * @return string
2512          */
2513         function getPreviewText() {
2514                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2515
2516                 wfProfileIn( __METHOD__ );
2517
2518                 if ( $wgRawHtml && !$this->mTokenOk ) {
2519                         // Could be an offsite preview attempt. This is very unsafe if
2520                         // HTML is enabled, as it could be an attack.
2521                         $parsedNote = '';
2522                         if ( $this->textbox1 !== '' ) {
2523                                 // Do not put big scary notice, if previewing the empty
2524                                 // string, which happens when you initially edit
2525                                 // a category page, due to automatic preview-on-open.
2526                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2527                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2528                         }
2529                         wfProfileOut( __METHOD__ );
2530                         return $parsedNote;
2531                 }
2532
2533                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2534                         if ( $this->mTokenOkExceptSuffix ) {
2535                                 $note = wfMsg( 'token_suffix_mismatch' );
2536                         } else {
2537                                 $note = wfMsg( 'session_fail_preview' );
2538                         }
2539                 } elseif ( $this->incompleteForm ) {
2540                         $note = wfMsg( 'edit_form_incomplete' );
2541                 } else {
2542                         $note = wfMsg( 'previewnote' );
2543                 }
2544
2545                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2546                 $parserOptions->setEditSection( false );
2547                 $parserOptions->setTidy( true );
2548                 $parserOptions->setIsPreview( true );
2549                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2550
2551                 # don't parse non-wikitext pages, show message about preview
2552                 # XXX: stupid php bug won't let us use $this->getContextTitle()->isCssJsSubpage() here -- This note has been there since r3530. Sure the bug was fixed time ago?
2553
2554                 if ( $this->isCssJsSubpage || !$this->mTitle->isWikitextPage() ) {
2555                         if( $this->mTitle->isCssJsSubpage() ) {
2556                                 $level = 'user';
2557                         } elseif( $this->mTitle->isCssOrJsPage() ) {
2558                                 $level = 'site';
2559                         } else {
2560                                 $level = false;
2561                         }
2562
2563                         # Used messages to make sure grep find them:
2564                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2565                         if( $level ) {
2566                                 if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2567                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2568                                         $class = "mw-code mw-css";
2569                                 } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2570                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2571                                         $class = "mw-code mw-js";
2572                                 } else {
2573                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2574                                 }
2575                         }
2576
2577                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2578                         $previewHTML = $parserOutput->mText;
2579                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2580                 } else {
2581                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2582                         if ( $rt ) {
2583                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2584                         } else {
2585                                 $toparse = $this->textbox1;
2586
2587                                 # If we're adding a comment, we need to show the
2588                                 # summary as the headline
2589                                 if ( $this->section == "new" && $this->summary != "" ) {
2590                                         $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2591                                 }
2592
2593                                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2594
2595                                 $parserOptions->enableLimitReport();
2596
2597                                 $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2598                                 $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2599
2600                                 $previewHTML = $parserOutput->getText();
2601                                 $this->mParserOutput = $parserOutput;
2602                                 $wgOut->addParserOutputNoText( $parserOutput );
2603
2604                                 if ( count( $parserOutput->getWarnings() ) ) {
2605                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2606                                 }
2607                         }
2608                 }
2609
2610                 if( $this->isConflict ) {
2611                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2612                 } else {
2613                         $conflict = '<hr />';
2614                 }
2615
2616                 $previewhead = "<div class='previewnote'>\n" .
2617                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2618                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2619
2620                 $pageLang = $this->mTitle->getPageLanguage();
2621                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2622                         'class' => 'mw-content-'.$pageLang->getDir() );
2623                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2624
2625                 wfProfileOut( __METHOD__ );
2626                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2627         }
2628
2629         /**
2630          * @return Array
2631          */
2632         function getTemplates() {
2633                 if ( $this->preview || $this->section != '' ) {
2634                         $templates = array();
2635                         if ( !isset( $this->mParserOutput ) ) {
2636                                 return $templates;
2637                         }
2638                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2639                                 foreach( array_keys( $template ) as $dbk ) {
2640                                         $templates[] = Title::makeTitle($ns, $dbk);
2641                                 }
2642                         }
2643                         return $templates;
2644                 } else {
2645                         return $this->mTitle->getTemplateLinksFrom();
2646                 }
2647         }
2648
2649         /**
2650          * Shows a bulletin board style toolbar for common editing functions.
2651          * It can be disabled in the user preferences.
2652          * The necessary JavaScript code can be found in skins/common/edit.js.
2653          *
2654          * @return string
2655          */
2656         static function getEditToolbar() {
2657                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2658                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2659
2660                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2661
2662                 /**
2663                  * $toolarray is an array of arrays each of which includes the
2664                  * filename of the button image (without path), the opening
2665                  * tag, the closing tag, optionally a sample text that is
2666                  * inserted between the two when no selection is highlighted
2667                  * and.  The tip text is shown when the user moves the mouse
2668                  * over the button.
2669                  *
2670                  * Also here: accesskeys (key), which are not used yet until
2671                  * someone can figure out a way to make them work in
2672                  * IE. However, we should make sure these keys are not defined
2673                  * on the edit page.
2674                  */
2675                 $toolarray = array(
2676                         array(
2677                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2678                                 'id'     => 'mw-editbutton-bold',
2679                                 'open'   => '\'\'\'',
2680                                 'close'  => '\'\'\'',
2681                                 'sample' => wfMsg( 'bold_sample' ),
2682                                 'tip'    => wfMsg( 'bold_tip' ),
2683                                 'key'    => 'B'
2684                         ),
2685                         array(
2686                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2687                                 'id'     => 'mw-editbutton-italic',
2688                                 'open'   => '\'\'',
2689                                 'close'  => '\'\'',
2690                                 'sample' => wfMsg( 'italic_sample' ),
2691                                 'tip'    => wfMsg( 'italic_tip' ),
2692                                 'key'    => 'I'
2693                         ),
2694                         array(
2695                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2696                                 'id'     => 'mw-editbutton-link',
2697                                 'open'   => '[[',
2698                                 'close'  => ']]',
2699                                 'sample' => wfMsg( 'link_sample' ),
2700                                 'tip'    => wfMsg( 'link_tip' ),
2701                                 'key'    => 'L'
2702                         ),
2703                         array(
2704                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2705                                 'id'     => 'mw-editbutton-extlink',
2706                                 'open'   => '[',
2707                                 'close'  => ']',
2708                                 'sample' => wfMsg( 'extlink_sample' ),
2709                                 'tip'    => wfMsg( 'extlink_tip' ),
2710                                 'key'    => 'X'
2711                         ),
2712                         array(
2713                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2714                                 'id'     => 'mw-editbutton-headline',
2715                                 'open'   => "\n== ",
2716                                 'close'  => " ==\n",
2717                                 'sample' => wfMsg( 'headline_sample' ),
2718                                 'tip'    => wfMsg( 'headline_tip' ),
2719                                 'key'    => 'H'
2720                         ),
2721                         $imagesAvailable ? array(
2722                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2723                                 'id'     => 'mw-editbutton-image',
2724                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2725                                 'close'  => ']]',
2726                                 'sample' => wfMsg( 'image_sample' ),
2727                                 'tip'    => wfMsg( 'image_tip' ),
2728                                 'key'    => 'D',
2729                         ) : false,
2730                         $imagesAvailable ? array(
2731                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2732                                 'id'     => 'mw-editbutton-media',
2733                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2734                                 'close'  => ']]',
2735                                 'sample' => wfMsg( 'media_sample' ),
2736                                 'tip'    => wfMsg( 'media_tip' ),
2737                                 'key'    => 'M'
2738                         ) : false,
2739                         $wgUseTeX ?     array(
2740                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2741                                 'id'     => 'mw-editbutton-math',
2742                                 'open'   => "<math>",
2743                                 'close'  => "</math>",
2744                                 'sample' => wfMsg( 'math_sample' ),
2745                                 'tip'    => wfMsg( 'math_tip' ),
2746                                 'key'    => 'C'
2747                         ) : false,
2748                         array(
2749                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2750                                 'id'     => 'mw-editbutton-nowiki',
2751                                 'open'   => "<nowiki>",
2752                                 'close'  => "</nowiki>",
2753                                 'sample' => wfMsg( 'nowiki_sample' ),
2754                                 'tip'    => wfMsg( 'nowiki_tip' ),
2755                                 'key'    => 'N'
2756                         ),
2757                         array(
2758                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2759                                 'id'     => 'mw-editbutton-signature',
2760                                 'open'   => '--~~~~',
2761                                 'close'  => '',
2762                                 'sample' => '',
2763                                 'tip'    => wfMsg( 'sig_tip' ),
2764                                 'key'    => 'Y'
2765                         ),
2766                         array(
2767                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2768                                 'id'     => 'mw-editbutton-hr',
2769                                 'open'   => "\n----\n",
2770                                 'close'  => '',
2771                                 'sample' => '',
2772                                 'tip'    => wfMsg( 'hr_tip' ),
2773                                 'key'    => 'R'
2774                         )
2775                 );
2776
2777                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
2778                 foreach ( $toolarray as $tool ) {
2779                         if ( !$tool ) {
2780                                 continue;
2781                         }
2782
2783                         $params = array(
2784                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2785                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2786                                 // Older browsers show a "speedtip" type message only for ALT.
2787                                 // Ideally these should be different, realistically they
2788                                 // probably don't need to be.
2789                                 $tip = $tool['tip'],
2790                                 $open = $tool['open'],
2791                                 $close = $tool['close'],
2792                                 $sample = $tool['sample'],
2793                                 $cssId = $tool['id'],
2794                         );
2795
2796                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2797                 }
2798
2799                 // This used to be called on DOMReady from mediawiki.action.edit, which
2800                 // ended up causing race conditions with the setup code above.
2801                 $script .= "\n" .
2802                         "// Create button bar\n" .
2803                         "$(function() { mw.toolbar.init(); } );\n";
2804
2805                 $script .= '});';
2806                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2807
2808                 $toolbar = '<div id="toolbar"></div>';
2809
2810                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2811
2812                 return $toolbar;
2813         }
2814
2815         /**
2816          * Returns an array of html code of the following checkboxes:
2817          * minor and watch
2818          *
2819          * @param $tabindex Current tabindex
2820          * @param $checked Array of checkbox => bool, where bool indicates the checked
2821          *                 status of the checkbox
2822          *
2823          * @return array
2824          */
2825         public function getCheckboxes( &$tabindex, $checked ) {
2826                 global $wgUser;
2827
2828                 $checkboxes = array();
2829
2830                 // don't show the minor edit checkbox if it's a new page or section
2831                 if ( !$this->isNew ) {
2832                         $checkboxes['minor'] = '';
2833                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2834                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2835                                 $attribs = array(
2836                                         'tabindex'  => ++$tabindex,
2837                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2838                                         'id'        => 'wpMinoredit',
2839                                 );
2840                                 $checkboxes['minor'] =
2841                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2842                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2843                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2844                                         ">{$minorLabel}</label>";
2845                         }
2846                 }
2847
2848                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2849                 $checkboxes['watch'] = '';
2850                 if ( $wgUser->isLoggedIn() ) {
2851                         $attribs = array(
2852                                 'tabindex'  => ++$tabindex,
2853                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2854                                 'id'        => 'wpWatchthis',
2855                         );
2856                         $checkboxes['watch'] =
2857                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2858                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2859                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2860                                 ">{$watchLabel}</label>";
2861                 }
2862                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2863                 return $checkboxes;
2864         }
2865
2866         /**
2867          * Returns an array of html code of the following buttons:
2868          * save, diff, preview and live
2869          *
2870          * @param $tabindex Current tabindex
2871          *
2872          * @return array
2873          */
2874         public function getEditButtons( &$tabindex ) {
2875                 $buttons = array();
2876
2877                 $temp = array(
2878                         'id'        => 'wpSave',
2879                         'name'      => 'wpSave',
2880                         'type'      => 'submit',
2881                         'tabindex'  => ++$tabindex,
2882                         'value'     => wfMsg( 'savearticle' ),
2883                         'accesskey' => wfMsg( 'accesskey-save' ),
2884                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2885                 );
2886                 $buttons['save'] = Xml::element('input', $temp, '');
2887
2888                 ++$tabindex; // use the same for preview and live preview
2889                 $temp = array(
2890                         'id'        => 'wpPreview',
2891                         'name'      => 'wpPreview',
2892                         'type'      => 'submit',
2893                         'tabindex'  => $tabindex,
2894                         'value'     => wfMsg( 'showpreview' ),
2895                         'accesskey' => wfMsg( 'accesskey-preview' ),
2896                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2897                 );
2898                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2899                 $buttons['live'] = '';
2900
2901                 $temp = array(
2902                         'id'        => 'wpDiff',
2903                         'name'      => 'wpDiff',
2904                         'type'      => 'submit',
2905                         'tabindex'  => ++$tabindex,
2906                         'value'     => wfMsg( 'showdiff' ),
2907                         'accesskey' => wfMsg( 'accesskey-diff' ),
2908                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2909                 );
2910                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2911
2912                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2913                 return $buttons;
2914         }
2915
2916         /**
2917          * Output preview text only. This can be sucked into the edit page
2918          * via JavaScript, and saves the server time rendering the skin as
2919          * well as theoretically being more robust on the client (doesn't
2920          * disturb the edit box's undo history, won't eat your text on
2921          * failure, etc).
2922          *
2923          * @todo This doesn't include category or interlanguage links.
2924          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2925          *       or something...</s> that might also require more skin
2926          *       initialization, so check whether that's a problem.
2927          */
2928         function livePreview() {
2929                 global $wgOut;
2930                 $wgOut->disable();
2931                 header( 'Content-type: text/xml; charset=utf-8' );
2932                 header( 'Cache-control: no-cache' );
2933
2934                 $previewText = $this->getPreviewText();
2935                 #$categories = $skin->getCategoryLinks();
2936
2937                 $s =
2938                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2939                 Xml::tags( 'livepreview', null,
2940                         Xml::element( 'preview', null, $previewText )
2941                         #.      Xml::element( 'category', null, $categories )
2942                 );
2943                 echo $s;
2944         }
2945
2946         /**
2947          * Call the stock "user is blocked" page
2948          *
2949          * @deprecated in 1.19; throw an exception directly instead
2950          */
2951         function blockedPage() {
2952                 wfDeprecated( __METHOD__, '1.19' );
2953                 global $wgUser;
2954
2955                 throw new UserBlockedError( $wgUser->mBlock );
2956         }
2957
2958         /**
2959          * Produce the stock "please login to edit pages" page
2960          *
2961          * @deprecated in 1.19; throw an exception directly instead
2962          */
2963         function userNotLoggedInPage() {
2964                 wfDeprecated( __METHOD__, '1.19' );
2965                 throw new PermissionsError( 'edit' );
2966         }
2967
2968         /**
2969          * Show an error page saying to the user that he has insufficient permissions
2970          * to create a new page
2971          *
2972          * @deprecated in 1.19; throw an exception directly instead
2973          */
2974         function noCreatePermission() {
2975                 wfDeprecated( __METHOD__, '1.19' );
2976                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
2977                 throw new PermissionsError( $permission );
2978         }
2979
2980         /**
2981          * Creates a basic error page which informs the user that
2982          * they have attempted to edit a nonexistent section.
2983          */
2984         function noSuchSectionPage() {
2985                 global $wgOut;
2986
2987                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
2988
2989                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
2990                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
2991                 $wgOut->addHTML( $res );
2992
2993                 $wgOut->returnToMain( false, $this->mTitle );
2994         }
2995
2996         /**
2997          * Produce the stock "your edit contains spam" page
2998          *
2999          * @param $match Text which triggered one or more filters
3000          * @deprecated since 1.17 Use method spamPageWithContent() instead
3001          */
3002         static function spamPage( $match = false ) {
3003                 wfDeprecated( __METHOD__, '1.17' );
3004
3005                 global $wgOut, $wgTitle;
3006
3007                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3008
3009                 $wgOut->addHTML( '<div id="spamprotected">' );
3010                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3011                 if ( $match ) {
3012                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3013                 }
3014                 $wgOut->addHTML( '</div>' );
3015
3016                 $wgOut->returnToMain( false, $wgTitle );
3017         }
3018
3019         /**
3020          * Show "your edit contains spam" page with your diff and text
3021          *
3022          * @param $match Text which triggered one or more filters
3023          */
3024         public function spamPageWithContent( $match = false ) {
3025                 global $wgOut;
3026                 $this->textbox2 = $this->textbox1;
3027
3028                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3029
3030                 $wgOut->addHTML( '<div id="spamprotected">' );
3031                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3032                 if ( $match ) {
3033                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3034                 }
3035                 $wgOut->addHTML( '</div>' );
3036
3037                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3038                 $de = new DifferenceEngine( $this->mArticle->getContext() );
3039                 $de->setText( $this->getCurrentText(), $this->textbox2 );
3040                 $de->showDiff( wfMsg( "storedversion" ), wfMsgExt( 'yourtext', 'parseinline' ) );
3041
3042                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3043                 $this->showTextbox2();
3044
3045                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3046         }
3047
3048         /**
3049          * Format an anchor fragment as it would appear for a given section name
3050          * @param $text String
3051          * @return String
3052          * @private
3053          */
3054         function sectionAnchor( $text ) {
3055                 global $wgParser;
3056                 return $wgParser->guessSectionNameFromWikiText( $text );
3057         }
3058
3059         /**
3060          * Check if the browser is on a blacklist of user-agents known to
3061          * mangle UTF-8 data on form submission. Returns true if Unicode
3062          * should make it through, false if it's known to be a problem.
3063          * @return bool
3064          * @private
3065          */
3066         function checkUnicodeCompliantBrowser() {
3067                 global $wgBrowserBlackList;
3068                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
3069                         // No User-Agent header sent? Trust it by default...
3070                         return true;
3071                 }
3072                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
3073                 foreach ( $wgBrowserBlackList as $browser ) {
3074                         if ( preg_match($browser, $currentbrowser) ) {
3075                                 return false;
3076                         }
3077                 }
3078                 return true;
3079         }
3080
3081         /**
3082          * Filter an input field through a Unicode de-armoring process if it
3083          * came from an old browser with known broken Unicode editing issues.
3084          *
3085          * @param $request WebRequest
3086          * @param $field String
3087          * @return String
3088          * @private
3089          */
3090         function safeUnicodeInput( $request, $field ) {
3091                 $text = rtrim( $request->getText( $field ) );
3092                 return $request->getBool( 'safemode' )
3093                         ? $this->unmakesafe( $text )
3094                         : $text;
3095         }
3096
3097         /**
3098          * @param $request WebRequest
3099          * @param $text string
3100          * @return string
3101          */
3102         function safeUnicodeText( $request, $text ) {
3103                 $text = rtrim( $text );
3104                 return $request->getBool( 'safemode' )
3105                         ? $this->unmakesafe( $text )
3106                         : $text;
3107         }
3108
3109         /**
3110          * Filter an output field through a Unicode armoring process if it is
3111          * going to an old browser with known broken Unicode editing issues.
3112          *
3113          * @param $text String
3114          * @return String
3115          * @private
3116          */
3117         function safeUnicodeOutput( $text ) {
3118                 global $wgContLang;
3119                 $codedText = $wgContLang->recodeForEdit( $text );
3120                 return $this->checkUnicodeCompliantBrowser()
3121                         ? $codedText
3122                         : $this->makesafe( $codedText );
3123         }
3124
3125         /**
3126          * A number of web browsers are known to corrupt non-ASCII characters
3127          * in a UTF-8 text editing environment. To protect against this,
3128          * detected browsers will be served an armored version of the text,
3129          * with non-ASCII chars converted to numeric HTML character references.
3130          *
3131          * Preexisting such character references will have a 0 added to them
3132          * to ensure that round-trips do not alter the original data.
3133          *
3134          * @param $invalue String
3135          * @return String
3136          * @private
3137          */
3138         function makesafe( $invalue ) {
3139                 // Armor existing references for reversability.
3140                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3141
3142                 $bytesleft = 0;
3143                 $result = "";
3144                 $working = 0;
3145                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3146                         $bytevalue = ord( $invalue[$i] );
3147                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
3148                                 $result .= chr( $bytevalue );
3149                                 $bytesleft = 0;
3150                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
3151                                 $working = $working << 6;
3152                                 $working += ($bytevalue & 0x3F);
3153                                 $bytesleft--;
3154                                 if ( $bytesleft <= 0 ) {
3155                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3156                                 }
3157                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
3158                                 $working = $bytevalue & 0x1F;
3159                                 $bytesleft = 1;
3160                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
3161                                 $working = $bytevalue & 0x0F;
3162                                 $bytesleft = 2;
3163                         } else { //1111 0xxx
3164                                 $working = $bytevalue & 0x07;
3165                                 $bytesleft = 3;
3166                         }
3167                 }
3168                 return $result;
3169         }
3170
3171         /**
3172          * Reverse the previously applied transliteration of non-ASCII characters
3173          * back to UTF-8. Used to protect data from corruption by broken web browsers
3174          * as listed in $wgBrowserBlackList.
3175          *
3176          * @param $invalue String
3177          * @return String
3178          * @private
3179          */
3180         function unmakesafe( $invalue ) {
3181                 $result = "";
3182                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3183                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
3184                                 $i += 3;
3185                                 $hexstring = "";
3186                                 do {
3187                                         $hexstring .= $invalue[$i];
3188                                         $i++;
3189                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3190
3191                                 // Do some sanity checks. These aren't needed for reversability,
3192                                 // but should help keep the breakage down if the editor
3193                                 // breaks one of the entities whilst editing.
3194                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
3195                                         $codepoint = hexdec($hexstring);
3196                                         $result .= codepointToUtf8( $codepoint );
3197                                 } else {
3198                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3199                                 }
3200                         } else {
3201                                 $result .= substr( $invalue, $i, 1 );
3202                         }
3203                 }
3204                 // reverse the transform that we made for reversability reasons.
3205                 return strtr( $result, array( "&#x0" => "&#x" ) );
3206         }
3207 }