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         /**
 187          * Has a summary been preset using GET parameter &summary= ?
 188          * @var Bool
 189          */
 190         var $hasPresetSummary = false;
 191
 192         var $mBaseRevision = false;
 193         var $mShowSummaryField = true;
 194
 195         # Form values
 196         var $save = false, $preview = false, $diff = false;
 197         var $minoredit = false, $watchthis = false, $recreate = false;
 198         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 199         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 200         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 201
 202         # Placeholders for text injection by hooks (must be HTML)
 203         # extensions should take care to _append_ to the present value
 204         public $editFormPageTop = ''; // Before even the preview
 205         public $editFormTextTop = '';
 206         public $editFormTextBeforeContent = '';
 207         public $editFormTextAfterWarn = '';
 208         public $editFormTextAfterTools = '';
 209         public $editFormTextBottom = '';
 210         public $editFormTextAfterContent = '';
 211         public $previewTextAfterContent = '';
 212         public $mPreloadText = '';
 213
 214         /* $didSave should be set to true whenever an article was succesfully altered. */
 215         public $didSave = false;
 216         public $undidRev = 0;
 217
 218         public $suppressIntro = false;
 219
 220         /**
 221          * @param $article Article
 222          */
 223         public function __construct( Article $article ) {
 224                 $this->mArticle = $article;
 225                 $this->mTitle = $article->getTitle();
 226         }
 227
 228         /**
 229          * @return Article
 230          */
 231         public function getArticle() {
 232                 return $this->mArticle;
 233         }
 234
 235         /**
 236          * @since 1.19
 237          * @return Title
 238          */
 239         public function getTitle() {
 240                 return $this->mTitle;
 241         }
 242
 243         /**
 244          * Set the context Title object
 245          *
 246          * @param $title Title object or null
 247          */
 248         public function setContextTitle( $title ) {
 249                 $this->mContextTitle = $title;
 250         }
 251
 252         /**
 253          * Get the context title object.
 254          * If not set, $wgTitle will be returned. This behavior might changed in
 255          * the future to return $this->mTitle instead.
 256          *
 257          * @return Title object
 258          */
 259         public function getContextTitle() {
 260                 if ( is_null( $this->mContextTitle ) ) {
 261                         global $wgTitle;
 262                         return $wgTitle;
 263                 } else {
 264                         return $this->mContextTitle;
 265                 }
 266         }
 267
 268         function submit() {
 269                 $this->edit();
 270         }
 271
 272         /**
 273          * This is the function that gets called for "action=edit". It
 274          * sets up various member variables, then passes execution to
 275          * another function, usually showEditForm()
 276          *
 277          * The edit form is self-submitting, so that when things like
 278          * preview and edit conflicts occur, we get the same form back
 279          * with the extra stuff added.  Only when the final submission
 280          * is made and all is well do we actually save and redirect to
 281          * the newly-edited page.
 282          */
 283         function edit() {
 284                 global $wgOut, $wgRequest, $wgUser;
 285                 // Allow extensions to modify/prevent this form or submission
 286                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 287                         return;
 288                 }
 289
 290                 wfProfileIn( __METHOD__ );
 291                 wfDebug( __METHOD__.": enter\n" );
 292
 293                 // If they used redlink=1 and the page exists, redirect to the main article
 294                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 295                         $wgOut->redirect( $this->mTitle->getFullURL() );
 296                         wfProfileOut( __METHOD__ );
 297                         return;
 298                 }
 299
 300                 $this->importFormData( $wgRequest );
 301                 $this->firsttime = false;
 302
 303                 if ( $this->live ) {
 304                         $this->livePreview();
 305                         wfProfileOut( __METHOD__ );
 306                         return;
 307                 }
 308
 309                 if ( wfReadOnly() && $this->save ) {
 310                         // Force preview
 311                         $this->save = false;
 312                         $this->preview = true;
 313                 }
 314
 315                 if ( $this->save ) {
 316                         $this->formtype = 'save';
 317                 } elseif ( $this->preview ) {
 318                         $this->formtype = 'preview';
 319                 } elseif ( $this->diff ) {
 320                         $this->formtype = 'diff';
 321                 } else { # First time through
 322                         $this->firsttime = true;
 323                         if ( $this->previewOnOpen() ) {
 324                                 $this->formtype = 'preview';
 325                         } else {
 326                                 $this->formtype = 'initial';
 327                         }
 328                 }
 329
 330                 $permErrors = $this->getEditPermissionErrors();
 331                 if ( $permErrors ) {
 332                         wfDebug( __METHOD__ . ": User can't edit\n" );
 333                         // Auto-block user's IP if the account was "hard" blocked
 334                         $wgUser->spreadAnyEditBlock();
 335
 336                         $this->displayPermissionsError( $permErrors );
 337
 338                         wfProfileOut( __METHOD__ );
 339                         return;
 340                 }
 341
 342                 wfProfileIn( __METHOD__."-business-end" );
 343
 344                 $this->isConflict = false;
 345                 // css / js subpages of user pages get a special treatment
 346                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 347                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 348                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 349                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 350                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 351
 352                 # Show applicable editing introductions
 353                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 354                         $this->showIntro();
 355                 }
 356
 357                 # Attempt submission here.  This will check for edit conflicts,
 358                 # and redundantly check for locked database, blocked IPs, etc.
 359                 # that edit() already checked just in case someone tries to sneak
 360                 # in the back door with a hand-edited submission URL.
 361
 362                 if ( 'save' == $this->formtype ) {
 363                         if ( !$this->attemptSave() ) {
 364                                 wfProfileOut( __METHOD__."-business-end" );
 365                                 wfProfileOut( __METHOD__ );
 366                                 return;
 367                         }
 368                 }
 369
 370                 # First time through: get contents, set time for conflict
 371                 # checking, etc.
 372                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 373                         if ( $this->initialiseForm() === false ) {
 374                                 $this->noSuchSectionPage();
 375                                 wfProfileOut( __METHOD__."-business-end" );
 376                                 wfProfileOut( __METHOD__ );
 377                                 return;
 378                         }
 379                         if ( !$this->mTitle->getArticleId() )
 380                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 381                         else
 382                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 383                 }
 384
 385                 $this->showEditForm();
 386                 wfProfileOut( __METHOD__."-business-end" );
 387                 wfProfileOut( __METHOD__ );
 388         }
 389
 390         /**
 391          * @return array
 392          */
 393         protected function getEditPermissionErrors() {
 394                 global $wgUser;
 395                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 396                 # Can this title be created?
 397                 if ( !$this->mTitle->exists() ) {
 398                         $permErrors = array_merge( $permErrors,
 399                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 400                 }
 401                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 402                 $remove = array();
 403                 foreach( $permErrors as $error ) {
 404                         if ( ( $this->preview || $this->diff ) &&
 405                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 406                         {
 407                                 $remove[] = $error;
 408                         }
 409                 }
 410                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 411                 return $permErrors;
 412         }
 413
 414         /**
 415          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 416          * but with the following differences:
 417          * - If redlink=1, the user will be redirected to the page
 418          * - If there is content to display or the error occurs while either saving,
 419          *   previewing or showing the difference, it will be a
 420          *   "View source for ..." page displaying the source code after the error message.
 421          *
 422          * @since 1.19
 423          * @param $permErrors Array of permissions errors, as returned by
 424          *                    Title::getUserPermissionsErrors().
 425          */
 426         protected function displayPermissionsError( array $permErrors ) {
 427                 global $wgRequest, $wgOut;
 428
 429                 if ( $wgRequest->getBool( 'redlink' ) ) {
 430                         // The edit page was reached via a red link.
 431                         // Redirect to the article page and let them click the edit tab if
 432                         // they really want a permission error.
 433                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 434                         return;
 435                 }
 436
 437                 $content = $this->getContent();
 438
 439                 # Use the normal message if there's nothing to display
 440                 if ( $this->firsttime && $content === '' ) {
 441                         $action = $this->mTitle->exists() ? 'edit' :
 442                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 443                         throw new PermissionsError( $action, $permErrors );
 444                 }
 445
 446                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 447                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 448                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 449                 $wgOut->addHTML( "<hr />\n" );
 450
 451                 # If the user made changes, preserve them when showing the markup
 452                 # (This happens when a user is blocked during edit, for instance)
 453                 if ( !$this->firsttime ) {
 454                         $content = $this->textbox1;
 455                         $wgOut->addWikiMsg( 'viewyourtext' );
 456                 } else {
 457                         $wgOut->addWikiMsg( 'viewsourcetext' );
 458                 }
 459
 460                 $this->showTextbox( $content, 'wpTextbox1', array( 'readonly' ) );
 461
 462                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 463                         Linker::formatTemplates( $this->getTemplates() ) ) );
 464
 465                 if ( $this->mTitle->exists() ) {
 466                         $wgOut->returnToMain( null, $this->mTitle );
 467                 }
 468         }
 469
 470         /**
 471          * Show a read-only error
 472          * Parameters are the same as OutputPage:readOnlyPage()
 473          * Redirect to the article page if redlink=1
 474          * @deprecated in 1.19; use displayPermissionsError() instead
 475          */
 476         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 477                 wfDeprecated( __METHOD__, '1.19' );
 478
 479                 global $wgRequest, $wgOut;
 480                 if ( $wgRequest->getBool( 'redlink' ) ) {
 481                         // The edit page was reached via a red link.
 482                         // Redirect to the article page and let them click the edit tab if
 483                         // they really want a permission error.
 484                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 485                 } else {
 486                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 487                 }
 488         }
 489
 490         /**
 491          * Should we show a preview when the edit form is first shown?
 492          *
 493          * @return bool
 494          */
 495         protected function previewOnOpen() {
 496                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 497                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 498                         // Explicit override from request
 499                         return true;
 500                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 501                         // Explicit override from request
 502                         return false;
 503                 } elseif ( $this->section == 'new' ) {
 504                         // Nothing *to* preview for new sections
 505                         return false;
 506                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 507                         // Standard preference behaviour
 508                         return true;
 509                 } elseif ( !$this->mTitle->exists() &&
 510                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 511                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 512                 {
 513                         // Categories are special
 514                         return true;
 515                 } else {
 516                         return false;
 517                 }
 518         }
 519
 520         /**
 521          * Checks whether the user entered a skin name in uppercase,
 522          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 523          *
 524          * @return bool
 525          */
 526         protected function isWrongCaseCssJsPage() {
 527                 if( $this->mTitle->isCssJsSubpage() ) {
 528                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 529                         $skins = array_merge(
 530                                 array_keys( Skin::getSkinNames() ),
 531                                 array( 'common' )
 532                         );
 533                         return !in_array( $name, $skins )
 534                                 && in_array( strtolower( $name ), $skins );
 535                 } else {
 536                         return false;
 537                 }
 538         }
 539
 540         /**
 541          * Does this EditPage class support section editing?
 542          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 543          *
 544          * @return bool
 545          */
 546         protected function isSectionEditSupported() {
 547                 return true;
 548         }
 549
 550         /**
 551          * This function collects the form data and uses it to populate various member variables.
 552          * @param $request WebRequest
 553          */
 554         function importFormData( &$request ) {
 555                 global $wgLang, $wgUser;
 556
 557                 wfProfileIn( __METHOD__ );
 558
 559                 # Section edit can come from either the form or a link
 560                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 561
 562                 if ( $request->wasPosted() ) {
 563                         # These fields need to be checked for encoding.
 564                         # Also remove trailing whitespace, but don't remove _initial_
 565                         # whitespace from the text boxes. This may be significant formatting.
 566                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 567                         if ( !$request->getCheck('wpTextbox2') ) {
 568                                 // Skip this if wpTextbox2 has input, it indicates that we came
 569                                 // from a conflict page with raw page text, not a custom form
 570                                 // modified by subclasses
 571                                 wfProfileIn( get_class($this)."::importContentFormData" );
 572                                 $textbox1 = $this->importContentFormData( $request );
 573                                 if ( isset($textbox1) )
 574                                         $this->textbox1 = $textbox1;
 575                                 wfProfileOut( get_class($this)."::importContentFormData" );
 576                         }
 577
 578                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 579                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 580
 581                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 582                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 583                         # section titles.
 584                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 585
 586                         # Treat sectiontitle the same way as summary.
 587                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 588                         # currently doing double duty as both edit summary and section title. Right now this
 589                         # is just to allow API edits to work around this limitation, but this should be
 590                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 591                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 592                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 593
 594                         $this->edittime = $request->getVal( 'wpEdittime' );
 595                         $this->starttime = $request->getVal( 'wpStarttime' );
 596
 597                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 598
 599                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 600                                 // wpTextbox1 field is missing, possibly due to being "too big"
 601                                 // according to some filter rules such as Suhosin's setting for
 602                                 // suhosin.request.max_value_length (d'oh)
 603                                 $this->incompleteForm = true;
 604                         } else {
 605                                 // edittime should be one of our last fields; if it's missing,
 606                                 // the submission probably broke somewhere in the middle.
 607                                 $this->incompleteForm = is_null( $this->edittime );
 608                         }
 609                         if ( $this->incompleteForm ) {
 610                                 # If the form is incomplete, force to preview.
 611                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 612                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 613                                 $this->preview = true;
 614                         } else {
 615                                 /* Fallback for live preview */
 616                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 617                                 $this->diff = $request->getCheck( 'wpDiff' );
 618
 619                                 // Remember whether a save was requested, so we can indicate
 620                                 // if we forced preview due to session failure.
 621                                 $this->mTriedSave = !$this->preview;
 622
 623                                 if ( $this->tokenOk( $request ) ) {
 624                                         # Some browsers will not report any submit button
 625                                         # if the user hits enter in the comment box.
 626                                         # The unmarked state will be assumed to be a save,
 627                                         # if the form seems otherwise complete.
 628                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 629                                 } elseif ( $this->diff ) {
 630                                         # Failed token check, but only requested "Show Changes".
 631                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 632                                 } else {
 633                                         # Page might be a hack attempt posted from
 634                                         # an external site. Preview instead of saving.
 635                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 636                                         $this->preview = true;
 637                                 }
 638                         }
 639                         $this->save = !$this->preview && !$this->diff;
 640                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 641                                 $this->edittime = null;
 642                         }
 643
 644                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 645                                 $this->starttime = null;
 646                         }
 647
 648                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 649
 650                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 651                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 652
 653                         # Don't force edit summaries when a user is editing their own user or talk page
 654                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 655                                 $this->mTitle->getText() == $wgUser->getName() )
 656                         {
 657                                 $this->allowBlankSummary = true;
 658                         } else {
 659                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 660                         }
 661
 662                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 663                 } else {
 664                         # Not a posted form? Start with nothing.
 665                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 666                         $this->textbox1     = '';
 667                         $this->summary      = '';
 668                         $this->sectiontitle = '';
 669                         $this->edittime     = '';
 670                         $this->starttime    = wfTimestampNow();
 671                         $this->edit         = false;
 672                         $this->preview      = false;
 673                         $this->save         = false;
 674                         $this->diff         = false;
 675                         $this->minoredit    = false;
 676                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 677                         $this->recreate     = false;
 678
 679                         // When creating a new section, we can preload a section title by passing it as the
 680                         // preloadtitle parameter in the URL (Bug 13100)
 681                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 682                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 683                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 684                                 $this->summary = $request->getVal( 'preloadtitle' );
 685                         }
 686                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 687                                 $this->summary = $request->getText( 'summary' );
 688                                 if ( $this->summary !== '' ) {
 689                                         $this->hasPresetSummary = true;
 690                                 }
 691                         }
 692
 693                         if ( $request->getVal( 'minor' ) ) {
 694                                 $this->minoredit = true;
 695                         }
 696                 }
 697
 698                 $this->bot = $request->getBool( 'bot', true );
 699                 $this->nosummary = $request->getBool( 'nosummary' );
 700
 701                 $this->oldid = $request->getInt( 'oldid' );
 702
 703                 $this->live = $request->getCheck( 'live' );
 704                 $this->editintro = $request->getText( 'editintro',
 705                         // Custom edit intro for new sections
 706                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 707
 708                 // Allow extensions to modify form data
 709                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 710
 711                 wfProfileOut( __METHOD__ );
 712         }
 713
 714         /**
 715          * Subpage overridable method for extracting the page content data from the
 716          * posted form to be placed in $this->textbox1, if using customized input
 717          * this method should be overrided and return the page text that will be used
 718          * for saving, preview parsing and so on...
 719          *
 720          * @param $request WebRequest
 721          */
 722         protected function importContentFormData( &$request ) {
 723                 return; // Don't do anything, EditPage already extracted wpTextbox1
 724         }
 725
 726         /**
 727          * Initialise form fields in the object
 728          * Called on the first invocation, e.g. when a user clicks an edit link
 729          * @return bool -- if the requested section is valid
 730          */
 731         function initialiseForm() {
 732                 global $wgUser;
 733                 $this->edittime = $this->mArticle->getTimestamp();
 734                 $this->textbox1 = $this->getContent( false );
 735                 // activate checkboxes if user wants them to be always active
 736                 # Sort out the "watch" checkbox
 737                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 738                         # Watch all edits
 739                         $this->watchthis = true;
 740                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 741                         # Watch creations
 742                         $this->watchthis = true;
 743                 } elseif ( $this->mTitle->userIsWatching() ) {
 744                         # Already watched
 745                         $this->watchthis = true;
 746                 }
 747                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 748                         $this->minoredit = true;
 749                 }
 750                 if ( $this->textbox1 === false ) {
 751                         return false;
 752                 }
 753                 wfProxyCheck();
 754                 return true;
 755         }
 756
 757         /**
 758          * Fetch initial editing page content.
 759          *
 760          * @param $def_text string
 761          * @return mixed string on success, $def_text for invalid sections
 762          * @private
 763          */
 764         function getContent( $def_text = '' ) {
 765                 global $wgOut, $wgRequest, $wgParser;
 766
 767                 wfProfileIn( __METHOD__ );
 768
 769                 $text = false;
 770
 771                 // For message page not locally set, use the i18n message.
 772                 // For other non-existent articles, use preload text if any.
 773                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 774                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 775                                 # If this is a system message, get the default text.
 776                                 $text = $this->mTitle->getDefaultMessageText();
 777                         }
 778                         if ( $text === false ) {
 779                                 # If requested, preload some text.
 780                                 $preload = $wgRequest->getVal( 'preload',
 781                                         // Custom preload text for new sections
 782                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 783                                 $text = $this->getPreloadedText( $preload );
 784                         }
 785                 // For existing pages, get text based on "undo" or section parameters.
 786                 } else {
 787                         if ( $this->section != '' ) {
 788                                 // Get section edit text (returns $def_text for invalid sections)
 789                                 $text = $wgParser->getSection( $this->getOriginalContent(), $this->section, $def_text );
 790                         } else {
 791                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 792                                 $undo = $wgRequest->getInt( 'undo' );
 793
 794                                 if ( $undo > 0 && $undoafter > 0 ) {
 795                                         if ( $undo < $undoafter ) {
 796                                                 # If they got undoafter and undo round the wrong way, switch them
 797                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 798                                         }
 799
 800                                         $undorev = Revision::newFromId( $undo );
 801                                         $oldrev = Revision::newFromId( $undoafter );
 802
 803                                         # Sanity check, make sure it's the right page,
 804                                         # the revisions exist and they were not deleted.
 805                                         # Otherwise, $text will be left as-is.
 806                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 807                                                 $undorev->getPage() == $oldrev->getPage() &&
 808                                                 $undorev->getPage() == $this->mTitle->getArticleId() &&
 809                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 810                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 811
 812                                                 $text = $this->mArticle->getUndoText( $undorev, $oldrev );
 813                                                 if ( $text === false ) {
 814                                                         # Warn the user that something went wrong
 815                                                         $undoMsg = 'failure';
 816                                                 } else {
 817                                                         # Inform the user of our success and set an automatic edit summary
 818                                                         $undoMsg = 'success';
 819
 820                                                         # If we just undid one rev, use an autosummary
 821                                                         $firstrev = $oldrev->getNext();
 822                                                         if ( $firstrev->getId() == $undo ) {
 823                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 824                                                                 if ( $this->summary === '' ) {
 825                                                                         $this->summary = $undoSummary;
 826                                                                 } else {
 827                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 828                                                                 }
 829                                                                 $this->undidRev = $undo;
 830                                                         }
 831                                                         $this->formtype = 'diff';
 832                                                 }
 833                                         } else {
 834                                                 // Failed basic sanity checks.
 835                                                 // Older revisions may have been removed since the link
 836                                                 // was created, or we may simply have got bogus input.
 837                                                 $undoMsg = 'norev';
 838                                         }
 839
 840                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"error mw-undo-{$undoMsg}\">" .
 841                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 842                                 }
 843
 844                                 if ( $text === false ) {
 845                                         $text = $this->getOriginalContent();
 846                                 }
 847                         }
 848                 }
 849
 850                 wfProfileOut( __METHOD__ );
 851                 return $text;
 852         }
 853
 854         /**
 855          * Get the content of the wanted revision, without section extraction.
 856          *
 857          * The result of this function can be used to compare user's input with
 858          * section replaced in its context (using WikiPage::replaceSection())
 859          * to the original text of the edit.
 860          *
 861          * This difers from Article::getContent() that when a missing revision is
 862          * encountered the result will be an empty string and not the
 863          * 'missing-article' message.
 864          *
 865          * @since 1.19
 866          * @return string
 867          */
 868         private function getOriginalContent() {
 869                 if ( $this->section == 'new' ) {
 870                         return $this->getCurrentText();
 871                 }
 872                 $revision = $this->mArticle->getRevisionFetched();
 873                 if ( $revision === null ) {
 874                         return '';
 875                 }
 876                 return $this->mArticle->getContent();
 877         }
 878
 879         /**
 880          * Get the actual text of the page. This is basically similar to
 881          * WikiPage::getRawText() except that when the page doesn't exist an empty
 882          * string is returned instead of false.
 883          *
 884          * @since 1.19
 885          * @return string
 886          */
 887         private function getCurrentText() {
 888                 $text = $this->mArticle->getRawText();
 889                 if ( $text === false ) {
 890                         return '';
 891                 } else {
 892                         return $text;
 893                 }
 894         }
 895
 896         /**
 897          * Use this method before edit() to preload some text into the edit box
 898          *
 899          * @param $text string
 900          */
 901         public function setPreloadedText( $text ) {
 902                 $this->mPreloadText = $text;
 903         }
 904
 905         /**
 906          * Get the contents to be preloaded into the box, either set by
 907          * an earlier setPreloadText() or by loading the given page.
 908          *
 909          * @param $preload String: representing the title to preload from.
 910          * @return String
 911          */
 912         protected function getPreloadedText( $preload ) {
 913                 global $wgUser, $wgParser;
 914
 915                 if ( !empty( $this->mPreloadText ) ) {
 916                         return $this->mPreloadText;
 917                 }
 918
 919                 if ( $preload === '' ) {
 920                         return '';
 921                 }
 922
 923                 $title = Title::newFromText( $preload );
 924                 # Check for existence to avoid getting MediaWiki:Noarticletext
 925                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 926                         return '';
 927                 }
 928
 929                 $page = WikiPage::factory( $title );
 930                 if ( $page->isRedirect() ) {
 931                         $title = $page->getRedirectTarget();
 932                         # Same as before
 933                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 934                                 return '';
 935                         }
 936                         $page = WikiPage::factory( $title );
 937                 }
 938
 939                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 940                 return $wgParser->getPreloadText( $page->getRawText(), $title, $parserOptions );
 941         }
 942
 943         /**
 944          * Make sure the form isn't faking a user's credentials.
 945          *
 946          * @param $request WebRequest
 947          * @return bool
 948          * @private
 949          */
 950         function tokenOk( &$request ) {
 951                 global $wgUser;
 952                 $token = $request->getVal( 'wpEditToken' );
 953                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 954                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 955                 return $this->mTokenOk;
 956         }
 957
 958         /**
 959          * Attempt submission
 960          * @return bool false if output is done, true if the rest of the form should be displayed
 961          */
 962         function attemptSave() {
 963                 global $wgUser, $wgOut;
 964
 965                 $resultDetails = false;
 966                 # Allow bots to exempt some edits from bot flagging
 967                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
 968                 $status = $this->internalAttemptSave( $resultDetails, $bot );
 969                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
 970
 971                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
 972                         $this->didSave = true;
 973                 }
 974
 975                 switch ( $status->value ) {
 976                         case self::AS_HOOK_ERROR_EXPECTED:
 977                         case self::AS_CONTENT_TOO_BIG:
 978                         case self::AS_ARTICLE_WAS_DELETED:
 979                         case self::AS_CONFLICT_DETECTED:
 980                         case self::AS_SUMMARY_NEEDED:
 981                         case self::AS_TEXTBOX_EMPTY:
 982                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 983                         case self::AS_END:
 984                                 return true;
 985
 986                         case self::AS_HOOK_ERROR:
 987                         case self::AS_FILTERING:
 988                                 return false;
 989
 990                         case self::AS_SUCCESS_NEW_ARTICLE:
 991                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
 992                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
 993                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
 994                                 return false;
 995
 996                         case self::AS_SUCCESS_UPDATE:
 997                                 $extraQuery = '';
 998                                 $sectionanchor = $resultDetails['sectionanchor'];
 999
1000                                 // Give extensions a chance to modify URL query on update
1001                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
1002
1003                                 if ( $resultDetails['redirect'] ) {
1004                                         if ( $extraQuery == '' ) {
1005                                                 $extraQuery = 'redirect=no';
1006                                         } else {
1007                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1008                                         }
1009                                 }
1010                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1011                                 return false;
1012
1013                         case self::AS_BLANK_ARTICLE:
1014                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
1015                                 return false;
1016
1017                         case self::AS_SPAM_ERROR:
1018                                 $this->spamPageWithContent( $resultDetails['spam'] );
1019                                 return false;
1020
1021                         case self::AS_BLOCKED_PAGE_FOR_USER:
1022                                 throw new UserBlockedError( $wgUser->mBlock );
1023
1024                         case self::AS_IMAGE_REDIRECT_ANON:
1025                         case self::AS_IMAGE_REDIRECT_LOGGED:
1026                                 throw new PermissionsError( 'upload' );
1027
1028                         case self::AS_READ_ONLY_PAGE_ANON:
1029                         case self::AS_READ_ONLY_PAGE_LOGGED:
1030                                 throw new PermissionsError( 'edit' );
1031
1032                         case self::AS_READ_ONLY_PAGE:
1033                                 throw new ReadOnlyError;
1034
1035                         case self::AS_RATE_LIMITED:
1036                                 throw new ThrottledError();
1037
1038                         case self::AS_NO_CREATE_PERMISSION:
1039                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1040                                 throw new PermissionsError( $permission );
1041
1042                 }
1043                 return false;
1044         }
1045
1046         /**
1047          * Attempt submission (no UI)
1048          *
1049          * @param $result
1050          * @param $bot bool
1051          *
1052          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1053          *
1054          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1055          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1056          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1057          */
1058         function internalAttemptSave( &$result, $bot = false ) {
1059                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
1060                 global $wgMaxArticleSize;
1061
1062                 $status = Status::newGood();
1063
1064                 wfProfileIn( __METHOD__  );
1065                 wfProfileIn( __METHOD__ . '-checks' );
1066
1067                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1068                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1069                         $status->fatal( 'hookaborted' );
1070                         $status->value = self::AS_HOOK_ERROR;
1071                         wfProfileOut( __METHOD__ . '-checks' );
1072                         wfProfileOut( __METHOD__  );
1073                         return $status;
1074                 }
1075
1076                 # Check image redirect
1077                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1078                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
1079                         !$wgUser->isAllowed( 'upload' ) ) {
1080                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1081                                 $status->setResult( false, $code );
1082
1083                                 wfProfileOut( __METHOD__ . '-checks' );
1084                                 wfProfileOut( __METHOD__  );
1085
1086                                 return $status;
1087                 }
1088
1089                 # Check for spam
1090                 $match = self::matchSummarySpamRegex( $this->summary );
1091                 if ( $match === false ) {
1092                         $match = self::matchSpamRegex( $this->textbox1 );
1093                 }
1094                 if ( $match !== false ) {
1095                         $result['spam'] = $match;
1096                         $ip = $wgRequest->getIP();
1097                         $pdbk = $this->mTitle->getPrefixedDBkey();
1098                         $match = str_replace( "\n", '', $match );
1099                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1100                         $status->fatal( 'spamprotectionmatch', $match );
1101                         $status->value = self::AS_SPAM_ERROR;
1102                         wfProfileOut( __METHOD__ . '-checks' );
1103                         wfProfileOut( __METHOD__ );
1104                         return $status;
1105                 }
1106                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
1107                         # Error messages or other handling should be performed by the filter function
1108                         $status->setResult( false, self::AS_FILTERING );
1109                         wfProfileOut( __METHOD__ . '-checks' );
1110                         wfProfileOut( __METHOD__ );
1111                         return $status;
1112                 }
1113                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1114                         # Error messages etc. could be handled within the hook...
1115                         $status->fatal( 'hookaborted' );
1116                         $status->value = self::AS_HOOK_ERROR;
1117                         wfProfileOut( __METHOD__ . '-checks' );
1118                         wfProfileOut( __METHOD__ );
1119                         return $status;
1120                 } elseif ( $this->hookError != '' ) {
1121                         # ...or the hook could be expecting us to produce an error
1122                         $status->fatal( 'hookaborted' );
1123                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1124                         wfProfileOut( __METHOD__ . '-checks' );
1125                         wfProfileOut( __METHOD__ );
1126                         return $status;
1127                 }
1128
1129                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1130                         // Auto-block user's IP if the account was "hard" blocked
1131                         $wgUser->spreadAnyEditBlock();
1132                         # Check block state against master, thus 'false'.
1133                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1134                         wfProfileOut( __METHOD__ . '-checks' );
1135                         wfProfileOut( __METHOD__ );
1136                         return $status;
1137                 }
1138
1139                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1140                 if ( $this->kblength > $wgMaxArticleSize ) {
1141                         // Error will be displayed by showEditForm()
1142                         $this->tooBig = true;
1143                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1144                         wfProfileOut( __METHOD__ . '-checks' );
1145                         wfProfileOut( __METHOD__ );
1146                         return $status;
1147                 }
1148
1149                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1150                         if ( $wgUser->isAnon() ) {
1151                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1152                                 wfProfileOut( __METHOD__ . '-checks' );
1153                                 wfProfileOut( __METHOD__ );
1154                                 return $status;
1155                         } else {
1156                                 $status->fatal( 'readonlytext' );
1157                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1158                                 wfProfileOut( __METHOD__ . '-checks' );
1159                                 wfProfileOut( __METHOD__ );
1160                                 return $status;
1161                         }
1162                 }
1163
1164                 if ( wfReadOnly() ) {
1165                         $status->fatal( 'readonlytext' );
1166                         $status->value = self::AS_READ_ONLY_PAGE;
1167                         wfProfileOut( __METHOD__ . '-checks' );
1168                         wfProfileOut( __METHOD__ );
1169                         return $status;
1170                 }
1171                 if ( $wgUser->pingLimiter() ) {
1172                         $status->fatal( 'actionthrottledtext' );
1173                         $status->value = self::AS_RATE_LIMITED;
1174                         wfProfileOut( __METHOD__ . '-checks' );
1175                         wfProfileOut( __METHOD__ );
1176                         return $status;
1177                 }
1178
1179                 # If the article has been deleted while editing, don't save it without
1180                 # confirmation
1181                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1182                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1183                         wfProfileOut( __METHOD__ . '-checks' );
1184                         wfProfileOut( __METHOD__ );
1185                         return $status;
1186                 }
1187
1188                 wfProfileOut( __METHOD__ . '-checks' );
1189
1190                 # If article is new, insert it.
1191                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1192                 $new = ( $aid == 0 );
1193
1194                 if ( $new ) {
1195                         // Late check for create permission, just in case *PARANOIA*
1196                         if ( !$this->mTitle->userCan( 'create' ) ) {
1197                                 $status->fatal( 'nocreatetext' );
1198                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1199                                 wfDebug( __METHOD__ . ": no create permission\n" );
1200                                 wfProfileOut( __METHOD__ );
1201                                 return $status;
1202                         }
1203
1204                         # Don't save a new article if it's blank.
1205                         if ( $this->textbox1 == '' ) {
1206                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1207                                 wfProfileOut( __METHOD__ );
1208                                 return $status;
1209                         }
1210
1211                         // Run post-section-merge edit filter
1212                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1213                                 # Error messages etc. could be handled within the hook...
1214                                 $status->fatal( 'hookaborted' );
1215                                 $status->value = self::AS_HOOK_ERROR;
1216                                 wfProfileOut( __METHOD__ );
1217                                 return $status;
1218                         } elseif ( $this->hookError != '' ) {
1219                                 # ...or the hook could be expecting us to produce an error
1220                                 $status->fatal( 'hookaborted' );
1221                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1222                                 wfProfileOut( __METHOD__ );
1223                                 return $status;
1224                         }
1225
1226                         # Handle the user preference to force summaries here. Check if it's not a redirect.
1227                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
1228                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1229                                         $this->missingSummary = true;
1230                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1231                                         $status->value = self::AS_SUMMARY_NEEDED;
1232                                         wfProfileOut( __METHOD__ );
1233                                         return $status;
1234                                 }
1235                         }
1236
1237                         $text = $this->textbox1;
1238                         $result['sectionanchor'] = '';
1239                         if ( $this->section == 'new' ) {
1240                                 if ( $this->sectiontitle !== '' ) {
1241                                         // Insert the section title above the content.
1242                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $text;
1243
1244                                         // Jump to the new section
1245                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1246
1247                                         // If no edit summary was specified, create one automatically from the section
1248                                         // title and have it link to the new section. Otherwise, respect the summary as
1249                                         // passed.
1250                                         if ( $this->summary === '' ) {
1251                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1252                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1253                                         }
1254                                 } elseif ( $this->summary !== '' ) {
1255                                         // Insert the section title above the content.
1256                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1257
1258                                         // Jump to the new section
1259                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1260
1261                                         // Create a link to the new section from the edit summary.
1262                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1263                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1264                                 }
1265                         }
1266
1267                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1268
1269                 } else {
1270
1271                         # Article exists. Check for edit conflict.
1272
1273                         $this->mArticle->clear(); # Force reload of dates, etc.
1274                         $timestamp = $this->mArticle->getTimestamp();
1275
1276                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1277
1278                         if ( $timestamp != $this->edittime ) {
1279                                 $this->isConflict = true;
1280                                 if ( $this->section == 'new' ) {
1281                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1282                                                 $this->mArticle->getComment() == $this->summary ) {
1283                                                 // Probably a duplicate submission of a new comment.
1284                                                 // This can happen when squid resends a request after
1285                                                 // a timeout but the first one actually went through.
1286                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1287                                         } else {
1288                                                 // New comment; suppress conflict.
1289                                                 $this->isConflict = false;
1290                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1291                                         }
1292                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1293                                         # Suppress edit conflict with self, except for section edits where merging is required.
1294                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1295                                         $this->isConflict = false;
1296                                 }
1297                         }
1298
1299                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1300                         // backwards compatibility with old forms/bots).
1301                         if ( $this->sectiontitle !== '' ) {
1302                                 $sectionTitle = $this->sectiontitle;
1303                         } else {
1304                                 $sectionTitle = $this->summary;
1305                         }
1306
1307                         if ( $this->isConflict ) {
1308                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1309                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime );
1310                         } else {
1311                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1312                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle );
1313                         }
1314                         if ( is_null( $text ) ) {
1315                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1316                                 $this->isConflict = true;
1317                                 $text = $this->textbox1; // do not try to merge here!
1318                         } elseif ( $this->isConflict ) {
1319                                 # Attempt merge
1320                                 if ( $this->mergeChangesInto( $text ) ) {
1321                                         // Successful merge! Maybe we should tell the user the good news?
1322                                         $this->isConflict = false;
1323                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1324                                 } else {
1325                                         $this->section = '';
1326                                         $this->textbox1 = $text;
1327                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1328                                 }
1329                         }
1330
1331                         if ( $this->isConflict ) {
1332                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1333                                 wfProfileOut( __METHOD__ );
1334                                 return $status;
1335                         }
1336
1337                         // Run post-section-merge edit filter
1338                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1339                                 # Error messages etc. could be handled within the hook...
1340                                 $status->fatal( 'hookaborted' );
1341                                 $status->value = self::AS_HOOK_ERROR;
1342                                 wfProfileOut( __METHOD__ );
1343                                 return $status;
1344                         } elseif ( $this->hookError != '' ) {
1345                                 # ...or the hook could be expecting us to produce an error
1346                                 $status->fatal( 'hookaborted' );
1347                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1348                                 wfProfileOut( __METHOD__ );
1349                                 return $status;
1350                         }
1351
1352                         # Handle the user preference to force summaries here, but not for null edits
1353                         if ( $this->section != 'new' && !$this->allowBlankSummary
1354                                 && $this->getOriginalContent() != $text
1355                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1356                         {
1357                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1358                                         $this->missingSummary = true;
1359                                         $status->fatal( 'missingsummary' );
1360                                         $status->value = self::AS_SUMMARY_NEEDED;
1361                                         wfProfileOut( __METHOD__ );
1362                                         return $status;
1363                                 }
1364                         }
1365
1366                         # And a similar thing for new sections
1367                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1368                                 if ( trim( $this->summary ) == '' ) {
1369                                         $this->missingSummary = true;
1370                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1371                                         $status->value = self::AS_SUMMARY_NEEDED;
1372                                         wfProfileOut( __METHOD__ );
1373                                         return $status;
1374                                 }
1375                         }
1376
1377                         # All's well
1378                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1379                         $sectionanchor = '';
1380                         if ( $this->section == 'new' ) {
1381                                 if ( $this->textbox1 == '' ) {
1382                                         $this->missingComment = true;
1383                                         $status->fatal( 'missingcommenttext' );
1384                                         $status->value = self::AS_TEXTBOX_EMPTY;
1385                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1386                                         wfProfileOut( __METHOD__ );
1387                                         return $status;
1388                                 }
1389                                 if ( $this->sectiontitle !== '' ) {
1390                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1391                                         // If no edit summary was specified, create one automatically from the section
1392                                         // title and have it link to the new section. Otherwise, respect the summary as
1393                                         // passed.
1394                                         if ( $this->summary === '' ) {
1395                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1396                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1397                                         }
1398                                 } elseif ( $this->summary !== '' ) {
1399                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1400                                         # This is a new section, so create a link to the new section
1401                                         # in the revision summary.
1402                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1403                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1404                                 }
1405                         } elseif ( $this->section != '' ) {
1406                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1407                                 # XXX: might be better to integrate this into Article::replaceSection
1408                                 # for duplicate heading checking and maybe parsing
1409                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1410                                 # we can't deal with anchors, includes, html etc in the header for now,
1411                                 # headline would need to be parsed to improve this
1412                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1413                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1414                                 }
1415                         }
1416                         $result['sectionanchor'] = $sectionanchor;
1417                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1418
1419                         // Save errors may fall down to the edit form, but we've now
1420                         // merged the section into full text. Clear the section field
1421                         // so that later submission of conflict forms won't try to
1422                         // replace that into a duplicated mess.
1423                         $this->textbox1 = $text;
1424                         $this->section = '';
1425
1426                         $status->value = self::AS_SUCCESS_UPDATE;
1427                 }
1428
1429                 // Check for length errors again now that the section is merged in
1430                 $this->kblength = (int)( strlen( $text ) / 1024 );
1431                 if ( $this->kblength > $wgMaxArticleSize ) {
1432                         $this->tooBig = true;
1433                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1434                         wfProfileOut( __METHOD__ );
1435                         return $status;
1436                 }
1437
1438                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1439                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1440                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1441                         ( $bot ? EDIT_FORCE_BOT : 0 );
1442
1443                 $doEditStatus = $this->mArticle->doEdit( $text, $this->summary, $flags );
1444
1445                 if ( $doEditStatus->isOK() ) {
1446                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1447                         $this->commitWatch();
1448                         wfProfileOut( __METHOD__ );
1449                         return $status;
1450                 } else {
1451                         $this->isConflict = true;
1452                         $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1453                         wfProfileOut( __METHOD__ );
1454                         return $doEditStatus;
1455                 }
1456         }
1457
1458         /**
1459          * Commit the change of watch status
1460          */
1461         protected function commitWatch() {
1462                 global $wgUser;
1463                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1464                         $dbw = wfGetDB( DB_MASTER );
1465                         $dbw->begin();
1466                         if ( $this->watchthis ) {
1467                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1468                         } else {
1469                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1470                         }
1471                         $dbw->commit();
1472                 }
1473         }
1474
1475         /**
1476          * Check if no edits were made by other users since
1477          * the time a user started editing the page. Limit to
1478          * 50 revisions for the sake of performance.
1479          *
1480          * @param $id int
1481          * @param $edittime string
1482          *
1483          * @return bool
1484          */
1485         protected function userWasLastToEdit( $id, $edittime ) {
1486                 if( !$id ) return false;
1487                 $dbw = wfGetDB( DB_MASTER );
1488                 $res = $dbw->select( 'revision',
1489                         'rev_user',
1490                         array(
1491                                 'rev_page' => $this->mTitle->getArticleId(),
1492                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1493                         ),
1494                         __METHOD__,
1495                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1496                 foreach ( $res as $row ) {
1497                         if( $row->rev_user != $id ) {
1498                                 return false;
1499                         }
1500                 }
1501                 return true;
1502         }
1503
1504         /**
1505          * @private
1506          * @todo document
1507          *
1508          * @parma $editText string
1509          *
1510          * @return bool
1511          */
1512         function mergeChangesInto( &$editText ){
1513                 wfProfileIn( __METHOD__ );
1514
1515                 $db = wfGetDB( DB_MASTER );
1516
1517                 // This is the revision the editor started from
1518                 $baseRevision = $this->getBaseRevision();
1519                 if ( is_null( $baseRevision ) ) {
1520                         wfProfileOut( __METHOD__ );
1521                         return false;
1522                 }
1523                 $baseText = $baseRevision->getText();
1524
1525                 // The current state, we want to merge updates into it
1526                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1527                 if ( is_null( $currentRevision ) ) {
1528                         wfProfileOut( __METHOD__ );
1529                         return false;
1530                 }
1531                 $currentText = $currentRevision->getText();
1532
1533                 $result = '';
1534                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1535                         $editText = $result;
1536                         wfProfileOut( __METHOD__ );
1537                         return true;
1538                 } else {
1539                         wfProfileOut( __METHOD__ );
1540                         return false;
1541                 }
1542         }
1543
1544         /**
1545          * @return Revision
1546          */
1547         function getBaseRevision() {
1548                 if ( !$this->mBaseRevision ) {
1549                         $db = wfGetDB( DB_MASTER );
1550                         $baseRevision = Revision::loadFromTimestamp(
1551                                 $db, $this->mTitle, $this->edittime );
1552                         return $this->mBaseRevision = $baseRevision;
1553                 } else {
1554                         return $this->mBaseRevision;
1555                 }
1556         }
1557
1558         /**
1559          * Check given input text against $wgSpamRegex, and return the text of the first match.
1560          *
1561          * @param $text string
1562          *
1563          * @return string|bool matching string or false
1564          */
1565         public static function matchSpamRegex( $text ) {
1566                 global $wgSpamRegex;
1567                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1568                 $regexes = (array)$wgSpamRegex;
1569                 return self::matchSpamRegexInternal( $text, $regexes );
1570         }
1571
1572         /**
1573          * Check given input text against $wgSpamRegex, and return the text of the first match.
1574          *
1575          * @parma $text string
1576          *
1577          * @return string|bool  matching string or false
1578          */
1579         public static function matchSummarySpamRegex( $text ) {
1580                 global $wgSummarySpamRegex;
1581                 $regexes = (array)$wgSummarySpamRegex;
1582                 return self::matchSpamRegexInternal( $text, $regexes );
1583         }
1584
1585         /**
1586          * @param $text string
1587          * @param $regexes array
1588          * @return bool|string
1589          */
1590         protected static function matchSpamRegexInternal( $text, $regexes ) {
1591                 foreach( $regexes as $regex ) {
1592                         $matches = array();
1593                         if( preg_match( $regex, $text, $matches ) ) {
1594                                 return $matches[0];
1595                         }
1596                 }
1597                 return false;
1598         }
1599
1600         function setHeaders() {
1601                 global $wgOut, $wgUser;
1602
1603                 $wgOut->addModules( 'mediawiki.action.edit' );
1604
1605                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1606                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1607                 }
1608                 // Bug #19334: textarea jumps when editing articles in IE8
1609                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1610
1611                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1612
1613                 # Enabled article-related sidebar, toplinks, etc.
1614                 $wgOut->setArticleRelated( true );
1615
1616                 if ( $this->isConflict ) {
1617                         $wgOut->setPageTitle( wfMessage( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1618                 } elseif ( $this->section != '' ) {
1619                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1620                         $wgOut->setPageTitle( wfMessage( $msg, $this->getContextTitle()->getPrefixedText() ) );
1621                 } else {
1622                         # Use the title defined by DISPLAYTITLE magic word when present
1623                         if ( isset( $this->mParserOutput )
1624                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1625                                 $title = $dt;
1626                         } else {
1627                                 $title = $this->getContextTitle()->getPrefixedText();
1628                         }
1629                         $wgOut->setPageTitle( wfMessage( 'editing', $title ) );
1630                 }
1631         }
1632
1633         /**
1634          * Show all applicable editing introductions
1635          */
1636         protected function showIntro() {
1637                 global $wgOut, $wgUser;
1638                 if ( $this->suppressIntro ) {
1639                         return;
1640                 }
1641
1642                 $namespace = $this->mTitle->getNamespace();
1643
1644                 if ( $namespace == NS_MEDIAWIKI ) {
1645                         # Show a warning if editing an interface message
1646                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1647                 }
1648
1649                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1650                 # Show log extract when the user is currently blocked
1651                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1652                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1653                         $username = $parts[0];
1654                         $user = User::newFromName( $username, false /* allow IP users*/ );
1655                         $ip = User::isIP( $username );
1656                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1657                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1658                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1659                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1660                                 LogEventsList::showLogExtract(
1661                                         $wgOut,
1662                                         'block',
1663                                         $user->getUserPage(),
1664                                         '',
1665                                         array(
1666                                                 'lim' => 1,
1667                                                 'showIfEmpty' => false,
1668                                                 'msgKey' => array(
1669                                                         'blocked-notice-logextract',
1670                                                         $user->getName() # Support GENDER in notice
1671                                                 )
1672                                         )
1673                                 );
1674                         }
1675                 }
1676                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1677                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1678                         if ( $wgUser->isLoggedIn() ) {
1679                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1680                         } else {
1681                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1682                         }
1683                 }
1684                 # Give a notice if the user is editing a deleted/moved page...
1685                 if ( !$this->mTitle->exists() ) {
1686                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1687                                 '', array( 'lim' => 10,
1688                                            'conds' => array( "log_action != 'revision'" ),
1689                                            'showIfEmpty' => false,
1690                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
1691                         );
1692                 }
1693         }
1694
1695         /**
1696          * Attempt to show a custom editing introduction, if supplied
1697          *
1698          * @return bool
1699          */
1700         protected function showCustomIntro() {
1701                 if ( $this->editintro ) {
1702                         $title = Title::newFromText( $this->editintro );
1703                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1704                                 global $wgOut;
1705                                 // Added using template syntax, to take <noinclude>'s into account.
1706                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1707                                 return true;
1708                         } else {
1709                                 return false;
1710                         }
1711                 } else {
1712                         return false;
1713                 }
1714         }
1715
1716         /**
1717          * Send the edit form and related headers to $wgOut
1718          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1719          *     during form output near the top, for captchas and the like.
1720          */
1721         function showEditForm( $formCallback = null ) {
1722                 global $wgOut, $wgUser;
1723
1724                 wfProfileIn( __METHOD__ );
1725
1726                 #need to parse the preview early so that we know which templates are used,
1727                 #otherwise users with "show preview after edit box" will get a blank list
1728                 #we parse this near the beginning so that setHeaders can do the title
1729                 #setting work instead of leaving it in getPreviewText
1730                 $previewOutput = '';
1731                 if ( $this->formtype == 'preview' ) {
1732                         $previewOutput = $this->getPreviewText();
1733                 }
1734
1735                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1736
1737                 $this->setHeaders();
1738
1739                 if ( $this->showHeader() === false ) {
1740                         wfProfileOut( __METHOD__ );
1741                         return;
1742                 }
1743
1744                 $wgOut->addHTML( $this->editFormPageTop );
1745
1746                 if ( $wgUser->getOption( 'previewontop' ) ) {
1747                         $this->displayPreviewArea( $previewOutput, true );
1748                 }
1749
1750                 $wgOut->addHTML( $this->editFormTextTop );
1751
1752                 $showToolbar = true;
1753                 if ( $this->wasDeletedSinceLastEdit() ) {
1754                         if ( $this->formtype == 'save' ) {
1755                                 // Hide the toolbar and edit area, user can click preview to get it back
1756                                 // Add an confirmation checkbox and explanation.
1757                                 $showToolbar = false;
1758                         } else {
1759                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1760                                         'deletedwhileediting' );
1761                         }
1762                 }
1763
1764                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => 'editform', 'name' => 'editform',
1765                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1766                         'enctype' => 'multipart/form-data' ) ) );
1767
1768                 if ( is_callable( $formCallback ) ) {
1769                         call_user_func_array( $formCallback, array( &$wgOut ) );
1770                 }
1771
1772                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1773
1774                 // Put these up at the top to ensure they aren't lost on early form submission
1775                 $this->showFormBeforeText();
1776
1777                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1778                         $username = $this->lastDelete->user_name;
1779                         $comment = $this->lastDelete->log_comment;
1780
1781                         // It is better to not parse the comment at all than to have templates expanded in the middle
1782                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1783                         $key = $comment === ''
1784                                 ? 'confirmrecreate-noreason'
1785                                 : 'confirmrecreate';
1786                         $wgOut->addHTML(
1787                                 '<div class="mw-confirm-recreate">' .
1788                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1789                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1790                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1791                                 ) .
1792                                 '</div>'
1793                         );
1794                 }
1795
1796                 # If a blank edit summary was previously provided, and the appropriate
1797                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1798                 # user being bounced back more than once in the event that a summary
1799                 # is not required.
1800                 #####
1801                 # For a bit more sophisticated detection of blank summaries, hash the
1802                 # automatic one and pass that in the hidden field wpAutoSummary.
1803                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
1804                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1805                 }
1806
1807                 if ( $this->hasPresetSummary ) {
1808                         // If a summary has been preset using &summary= we dont want to prompt for
1809                         // a different summary. Only prompt for a summary if the summary is blanked.
1810                         // (Bug 17416)
1811                         $this->autoSumm = md5('');
1812                 }
1813
1814                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1815                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1816
1817                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1818
1819                 if ( $this->section == 'new' ) {
1820                         $this->showSummaryInput( true, $this->summary );
1821                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1822                 }
1823
1824                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1825
1826                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
1827                         $wgOut->addHTML( EditPage::getEditToolbar() );
1828                 }
1829
1830                 if ( $this->isConflict ) {
1831                         // In an edit conflict bypass the overrideable content form method
1832                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1833                         // resolved between page source edits and custom ui edits using the
1834                         // custom edit ui.
1835                         $this->textbox2 = $this->textbox1;
1836                         $this->textbox1 = $this->getCurrentText();
1837
1838                         $this->showTextbox1();
1839                 } else {
1840                         $this->showContentForm();
1841                 }
1842
1843                 $wgOut->addHTML( $this->editFormTextAfterContent );
1844
1845                 $wgOut->addWikiText( $this->getCopywarn() );
1846
1847                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1848
1849                 $this->showStandardInputs();
1850
1851                 $this->showFormAfterText();
1852
1853                 $this->showTosSummary();
1854
1855                 $this->showEditTools();
1856
1857                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
1858
1859                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
1860                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
1861
1862                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
1863                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
1864
1865                 if ( $this->isConflict ) {
1866                         $this->showConflict();
1867                 }
1868
1869                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
1870
1871                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1872                         $this->displayPreviewArea( $previewOutput, false );
1873                 }
1874
1875                 wfProfileOut( __METHOD__ );
1876         }
1877
1878         /**
1879          * Extract the section title from current section text, if any.
1880          *
1881          * @param string $text
1882          * @return Mixed|string or false
1883          */
1884         public static function extractSectionTitle( $text ) {
1885                 preg_match( "/^(=+)(.+)\\1(\n|$)/i", $text, $matches );
1886                 if ( !empty( $matches[2] ) ) {
1887                         global $wgParser;
1888                         return $wgParser->stripSectionName(trim($matches[2]));
1889                 } else {
1890                         return false;
1891                 }
1892         }
1893
1894         protected function showHeader() {
1895                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1896
1897                 if ( $this->mTitle->isTalkPage() ) {
1898                         $wgOut->addWikiMsg( 'talkpagetext' );
1899                 }
1900
1901                 # Optional notices on a per-namespace and per-page basis
1902                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
1903                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
1904                 if ( $editnotice_ns_message->exists() ) {
1905                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
1906                 }
1907                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1908                         $parts = explode( '/', $this->mTitle->getDBkey() );
1909                         $editnotice_base = $editnotice_ns;
1910                         while ( count( $parts ) > 0 ) {
1911                                 $editnotice_base .= '-'.array_shift( $parts );
1912                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
1913                                 if ( $editnotice_base_msg->exists() ) {
1914                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
1915                                 }
1916                         }
1917                 } else {
1918                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
1919                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
1920                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
1921                         if ( $editnoticeMsg->exists() ) {
1922                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
1923                         }
1924                 }
1925
1926                 if ( $this->isConflict ) {
1927                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1928                         $this->edittime = $this->mArticle->getTimestamp();
1929                 } else {
1930                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1931                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1932                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1933                                 // Someone is welcome to try refactoring though
1934                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1935                                 return false;
1936                         }
1937
1938                         if ( $this->section != '' && $this->section != 'new' ) {
1939                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1940                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
1941                                         if ( $sectionTitle !== false ) {
1942                                                 $this->summary = "/* $sectionTitle */ ";
1943                                         }
1944                                 }
1945                         }
1946
1947                         if ( $this->missingComment ) {
1948                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1949                         }
1950
1951                         if ( $this->missingSummary && $this->section != 'new' ) {
1952                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1953                         }
1954
1955                         if ( $this->missingSummary && $this->section == 'new' ) {
1956                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1957                         }
1958
1959                         if ( $this->hookError !== '' ) {
1960                                 $wgOut->addWikiText( $this->hookError );
1961                         }
1962
1963                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1964                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1965                         }
1966
1967                         if ( $this->section != 'new' ) {
1968                                 $revision = $this->mArticle->getRevisionFetched();
1969                                 if ( $revision ) {
1970                                         // Let sysop know that this will make private content public if saved
1971
1972                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
1973                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1974                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
1975                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1976                                         }
1977
1978                                         if ( !$revision->isCurrent() ) {
1979                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
1980                                                 $wgOut->addWikiMsg( 'editingold' );
1981                                         }
1982                                 } elseif ( $this->mTitle->exists() ) {
1983                                         // Something went wrong
1984
1985                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
1986                                                 array( 'missing-article', $this->mTitle->getPrefixedText(),
1987                                                 wfMsgNoTrans( 'missingarticle-rev', $this->oldid ) ) );
1988                                 }
1989                         }
1990                 }
1991
1992                 if ( wfReadOnly() ) {
1993                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1994                 } elseif ( $wgUser->isAnon() ) {
1995                         if ( $this->formtype != 'preview' ) {
1996                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1997                         } else {
1998                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1999                         }
2000                 } else {
2001                         if ( $this->isCssJsSubpage ) {
2002                                 # Check the skin exists
2003                                 if ( $this->isWrongCaseCssJsPage ) {
2004                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
2005                                 }
2006                                 if ( $this->formtype !== 'preview' ) {
2007                                         if ( $this->isCssSubpage )
2008                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
2009                                         if ( $this->isJsSubpage )
2010                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
2011                                 }
2012                         }
2013                 }
2014
2015                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2016                         # Is the title semi-protected?
2017                         if ( $this->mTitle->isSemiProtected() ) {
2018                                 $noticeMsg = 'semiprotectedpagewarning';
2019                         } else {
2020                                 # Then it must be protected based on static groups (regular)
2021                                 $noticeMsg = 'protectedpagewarning';
2022                         }
2023                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2024                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2025                 }
2026                 if ( $this->mTitle->isCascadeProtected() ) {
2027                         # Is this page under cascading protection from some source pages?
2028                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
2029                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2030                         $cascadeSourcesCount = count( $cascadeSources );
2031                         if ( $cascadeSourcesCount > 0 ) {
2032                                 # Explain, and list the titles responsible
2033                                 foreach( $cascadeSources as $page ) {
2034                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2035                                 }
2036                         }
2037                         $notice .= '</div>';
2038                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2039                 }
2040                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2041                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2042                                 array(  'lim' => 1,
2043                                         'showIfEmpty' => false,
2044                                         'msgKey' => array( 'titleprotectedwarning' ),
2045                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2046                 }
2047
2048                 if ( $this->kblength === false ) {
2049                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2050                 }
2051
2052                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2053                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2054                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
2055                 } else {
2056                         if( !wfMessage('longpage-hint')->isDisabled() ) {
2057                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2058                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2059                                 );
2060                         }
2061                 }
2062         }
2063
2064         /**
2065          * Standard summary input and label (wgSummary), abstracted so EditPage
2066          * subclasses may reorganize the form.
2067          * Note that you do not need to worry about the label's for=, it will be
2068          * inferred by the id given to the input. You can remove them both by
2069          * passing array( 'id' => false ) to $userInputAttrs.
2070          *
2071          * @param $summary string The value of the summary input
2072          * @param $labelText string The html to place inside the label
2073          * @param $inputAttrs array of attrs to use on the input
2074          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2075          *
2076          * @return array An array in the format array( $label, $input )
2077          */
2078         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
2079                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
2080                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
2081                         'id' => 'wpSummary',
2082                         'maxlength' => '200',
2083                         'tabindex' => '1',
2084                         'size' => 60,
2085                         'spellcheck' => 'true',
2086                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2087
2088                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
2089                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2090                         'id' => "wpSummaryLabel"
2091                 );
2092
2093                 $label = null;
2094                 if ( $labelText ) {
2095                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2096                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2097                 }
2098
2099                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2100
2101                 return array( $label, $input );
2102         }
2103
2104         /**
2105          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2106          *                          up top, or false if this is the comment summary
2107          *                          down below the textarea
2108          * @param $summary String: The text of the summary to display
2109          * @return String
2110          */
2111         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2112                 global $wgOut, $wgContLang;
2113                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2114                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2115                 if ( $isSubjectPreview ) {
2116                         if ( $this->nosummary ) {
2117                                 return;
2118                         }
2119                 } else {
2120                         if ( !$this->mShowSummaryField ) {
2121                                 return;
2122                         }
2123                 }
2124                 $summary = $wgContLang->recodeForEdit( $summary );
2125                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2126                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
2127                 $wgOut->addHTML("{$label} {$input}");
2128         }
2129
2130         /**
2131          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2132          *                          up top, or false if this is the comment summary
2133          *                          down below the textarea
2134          * @param $summary String: the text of the summary to display
2135          * @return String
2136          */
2137         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2138                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2139                         return "";
2140
2141                 global $wgParser;
2142
2143                 if ( $isSubjectPreview )
2144                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2145
2146                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2147
2148                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2149                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2150         }
2151
2152         protected function showFormBeforeText() {
2153                 global $wgOut;
2154                 $section = htmlspecialchars( $this->section );
2155                 $wgOut->addHTML( <<<HTML
2156 <input type='hidden' value="{$section}" name="wpSection" />
2157 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2158 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2159 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2160
2161 HTML
2162                 );
2163                 if ( !$this->checkUnicodeCompliantBrowser() )
2164                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
2165         }
2166
2167         protected function showFormAfterText() {
2168                 global $wgOut, $wgUser;
2169                 /**
2170                  * To make it harder for someone to slip a user a page
2171                  * which submits an edit form to the wiki without their
2172                  * knowledge, a random token is associated with the login
2173                  * session. If it's not passed back with the submission,
2174                  * we won't save the page, or render user JavaScript and
2175                  * CSS previews.
2176                  *
2177                  * For anon editors, who may not have a session, we just
2178                  * include the constant suffix to prevent editing from
2179                  * broken text-mangling proxies.
2180                  */
2181                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2182         }
2183
2184         /**
2185          * Subpage overridable method for printing the form for page content editing
2186          * By default this simply outputs wpTextbox1
2187          * Subclasses can override this to provide a custom UI for editing;
2188          * be it a form, or simply wpTextbox1 with a modified content that will be
2189          * reverse modified when extracted from the post data.
2190          * Note that this is basically the inverse for importContentFormData
2191          */
2192         protected function showContentForm() {
2193                 $this->showTextbox1();
2194         }
2195
2196         /**
2197          * Method to output wpTextbox1
2198          * The $textoverride method can be used by subclasses overriding showContentForm
2199          * to pass back to this method.
2200          *
2201          * @param $customAttribs array of html attributes to use in the textarea
2202          * @param $textoverride String: optional text to override $this->textarea1 with
2203          */
2204         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2205                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2206                         $attribs = array( 'style' => 'display:none;' );
2207                 } else {
2208                         $classes = array(); // Textarea CSS
2209                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2210                                 # Is the title semi-protected?
2211                                 if ( $this->mTitle->isSemiProtected() ) {
2212                                         $classes[] = 'mw-textarea-sprotected';
2213                                 } else {
2214                                         # Then it must be protected based on static groups (regular)
2215                                         $classes[] = 'mw-textarea-protected';
2216                                 }
2217                                 # Is the title cascade-protected?
2218                                 if ( $this->mTitle->isCascadeProtected() ) {
2219                                         $classes[] = 'mw-textarea-cprotected';
2220                                 }
2221                         }
2222
2223                         $attribs = array( 'tabindex' => 1 );
2224
2225                         if ( is_array( $customAttribs ) ) {
2226                                 $attribs += $customAttribs;
2227                         }
2228
2229                         if ( count( $classes ) ) {
2230                                 if ( isset( $attribs['class'] ) ) {
2231                                         $classes[] = $attribs['class'];
2232                                 }
2233                                 $attribs['class'] = implode( ' ', $classes );
2234                         }
2235                 }
2236
2237                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2238         }
2239
2240         protected function showTextbox2() {
2241                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2242         }
2243
2244         protected function showTextbox( $content, $name, $customAttribs = array() ) {
2245                 global $wgOut, $wgUser;
2246
2247                 $wikitext = $this->safeUnicodeOutput( $content );
2248                 if ( strval($wikitext) !== '' ) {
2249                         // Ensure there's a newline at the end, otherwise adding lines
2250                         // is awkward.
2251                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2252                         // mode will show an extra newline. A bit annoying.
2253                         $wikitext .= "\n";
2254                 }
2255
2256                 $attribs = $customAttribs + array(
2257                         'accesskey' => ',',
2258                         'id'   => $name,
2259                         'cols' => $wgUser->getIntOption( 'cols' ),
2260                         'rows' => $wgUser->getIntOption( 'rows' ),
2261                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2262                 );
2263
2264                 $pageLang = $this->mTitle->getPageLanguage();
2265                 $attribs['lang'] = $pageLang->getCode();
2266                 $attribs['dir'] = $pageLang->getDir();
2267
2268                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2269         }
2270
2271         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2272                 global $wgOut;
2273                 $classes = array();
2274                 if ( $isOnTop )
2275                         $classes[] = 'ontop';
2276
2277                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2278
2279                 if ( $this->formtype != 'preview' )
2280                         $attribs['style'] = 'display: none;';
2281
2282                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2283
2284                 if ( $this->formtype == 'preview' ) {
2285                         $this->showPreview( $previewOutput );
2286                 }
2287
2288                 $wgOut->addHTML( '</div>' );
2289
2290                 if ( $this->formtype == 'diff') {
2291                         $this->showDiff();
2292                 }
2293         }
2294
2295         /**
2296          * Append preview output to $wgOut.
2297          * Includes category rendering if this is a category page.
2298          *
2299          * @param $text String: the HTML to be output for the preview.
2300          */
2301         protected function showPreview( $text ) {
2302                 global $wgOut;
2303                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
2304                         $this->mArticle->openShowCategory();
2305                 }
2306                 # This hook seems slightly odd here, but makes things more
2307                 # consistent for extensions.
2308                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
2309                 $wgOut->addHTML( $text );
2310                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2311                         $this->mArticle->closeShowCategory();
2312                 }
2313         }
2314
2315         /**
2316          * Get a diff between the current contents of the edit box and the
2317          * version of the page we're editing from.
2318          *
2319          * If this is a section edit, we'll replace the section as for final
2320          * save and then make a comparison.
2321          */
2322         function showDiff() {
2323                 global $wgUser, $wgContLang, $wgParser, $wgOut;
2324
2325                 $oldtext = $this->getOriginalContent();
2326                 $newtext = $this->mArticle->replaceSection(
2327                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2328
2329                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2330
2331                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2332                 $newtext = $wgParser->preSaveTransform( $newtext, $this->mTitle, $wgUser, $popts );
2333
2334                 if ( $oldtext !== false  || $newtext != '' ) {
2335                         $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2336                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2337
2338                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2339                         $de->setText( $oldtext, $newtext );
2340                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2341                         $de->showDiffStyle();
2342                 } else {
2343                         $difftext = '';
2344                 }
2345
2346                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2347         }
2348
2349         /**
2350          * Give a chance for site and per-namespace customizations of
2351          * terms of service summary link that might exist separately
2352          * from the copyright notice.
2353          *
2354          * This will display between the save button and the edit tools,
2355          * so should remain short!
2356          */
2357         protected function showTosSummary() {
2358                 $msg = 'editpage-tos-summary';
2359                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2360                 if( !wfMessage( $msg )->isDisabled() ) {
2361                         global $wgOut;
2362                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2363                         $wgOut->addWikiMsg( $msg );
2364                         $wgOut->addHTML( '</div>' );
2365                 }
2366         }
2367
2368         protected function showEditTools() {
2369                 global $wgOut;
2370                 $wgOut->addHTML( '<div class="mw-editTools">' .
2371                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2372                         '</div>' );
2373         }
2374
2375         protected function getCopywarn() {
2376                 global $wgRightsText;
2377                 if ( $wgRightsText ) {
2378                         $copywarnMsg = array( 'copyrightwarning',
2379                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2380                                 $wgRightsText );
2381                 } else {
2382                         $copywarnMsg = array( 'copyrightwarning2',
2383                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2384                 }
2385                 // Allow for site and per-namespace customization of contribution/copyright notice.
2386                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2387
2388                 return "<div id=\"editpage-copywarn\">\n" .
2389                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
2390         }
2391
2392         protected function showStandardInputs( &$tabindex = 2 ) {
2393                 global $wgOut;
2394                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2395
2396                 if ( $this->section != 'new' ) {
2397                         $this->showSummaryInput( false, $this->summary );
2398                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2399                 }
2400
2401                 $checkboxes = $this->getCheckboxes( $tabindex,
2402                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2403                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2404                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2405                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2406
2407                 $cancel = $this->getCancelLink();
2408                 if ( $cancel !== '' ) {
2409                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2410                 }
2411                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2412                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
2413                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
2414                         htmlspecialchars( wfMsg( 'newwindow' ) );
2415                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2416                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2417         }
2418
2419         /**
2420          * Show an edit conflict. textbox1 is already shown in showEditForm().
2421          * If you want to use another entry point to this function, be careful.
2422          */
2423         protected function showConflict() {
2424                 global $wgOut;
2425
2426                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2427                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2428
2429                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2430                         $de->setText( $this->textbox2, $this->textbox1 );
2431                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2432
2433                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2434                         $this->showTextbox2();
2435                 }
2436         }
2437
2438         /**
2439          * @return string
2440          */
2441         public function getCancelLink() {
2442                 $cancelParams = array();
2443                 if ( !$this->isConflict && $this->oldid > 0 ) {
2444                         $cancelParams['oldid'] = $this->oldid;
2445                 }
2446
2447                 return Linker::linkKnown(
2448                         $this->getContextTitle(),
2449                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2450                         array( 'id' => 'mw-editform-cancel' ),
2451                         $cancelParams
2452                 );
2453         }
2454
2455         /**
2456          * Returns the URL to use in the form's action attribute.
2457          * This is used by EditPage subclasses when simply customizing the action
2458          * variable in the constructor is not enough. This can be used when the
2459          * EditPage lives inside of a Special page rather than a custom page action.
2460          *
2461          * @param $title Title object for which is being edited (where we go to for &action= links)
2462          * @return string
2463          */
2464         protected function getActionURL( Title $title ) {
2465                 return $title->getLocalURL( array( 'action' => $this->action ) );
2466         }
2467
2468         /**
2469          * Check if a page was deleted while the user was editing it, before submit.
2470          * Note that we rely on the logging table, which hasn't been always there,
2471          * but that doesn't matter, because this only applies to brand new
2472          * deletes.
2473          */
2474         protected function wasDeletedSinceLastEdit() {
2475                 if ( $this->deletedSinceEdit !== null ) {
2476                         return $this->deletedSinceEdit;
2477                 }
2478
2479                 $this->deletedSinceEdit = false;
2480
2481                 if ( $this->mTitle->isDeletedQuick() ) {
2482                         $this->lastDelete = $this->getLastDelete();
2483                         if ( $this->lastDelete ) {
2484                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2485                                 if ( $deleteTime > $this->starttime ) {
2486                                         $this->deletedSinceEdit = true;
2487                                 }
2488                         }
2489                 }
2490
2491                 return $this->deletedSinceEdit;
2492         }
2493
2494         protected function getLastDelete() {
2495                 $dbr = wfGetDB( DB_SLAVE );
2496                 $data = $dbr->selectRow(
2497                         array( 'logging', 'user' ),
2498                         array( 'log_type',
2499                                    'log_action',
2500                                    'log_timestamp',
2501                                    'log_user',
2502                                    'log_namespace',
2503                                    'log_title',
2504                                    'log_comment',
2505                                    'log_params',
2506                                    'log_deleted',
2507                                    'user_name' ),
2508                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2509                                    'log_title' => $this->mTitle->getDBkey(),
2510                                    'log_type' => 'delete',
2511                                    'log_action' => 'delete',
2512                                    'user_id=log_user' ),
2513                         __METHOD__,
2514                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2515                 );
2516                 // Quick paranoid permission checks...
2517                 if( is_object( $data ) ) {
2518                         if( $data->log_deleted & LogPage::DELETED_USER )
2519                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2520                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
2521                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2522                 }
2523                 return $data;
2524         }
2525
2526         /**
2527          * Get the rendered text for previewing.
2528          * @return string
2529          */
2530         function getPreviewText() {
2531                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2532
2533                 wfProfileIn( __METHOD__ );
2534
2535                 if ( $wgRawHtml && !$this->mTokenOk ) {
2536                         // Could be an offsite preview attempt. This is very unsafe if
2537                         // HTML is enabled, as it could be an attack.
2538                         $parsedNote = '';
2539                         if ( $this->textbox1 !== '' ) {
2540                                 // Do not put big scary notice, if previewing the empty
2541                                 // string, which happens when you initially edit
2542                                 // a category page, due to automatic preview-on-open.
2543                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2544                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2545                         }
2546                         wfProfileOut( __METHOD__ );
2547                         return $parsedNote;
2548                 }
2549
2550                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2551                         if ( $this->mTokenOkExceptSuffix ) {
2552                                 $note = wfMsg( 'token_suffix_mismatch' );
2553                         } else {
2554                                 $note = wfMsg( 'session_fail_preview' );
2555                         }
2556                 } elseif ( $this->incompleteForm ) {
2557                         $note = wfMsg( 'edit_form_incomplete' );
2558                 } else {
2559                         $note = wfMsg( 'previewnote' );
2560                 }
2561
2562                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2563                 $parserOptions->setEditSection( false );
2564                 $parserOptions->setTidy( true );
2565                 $parserOptions->setIsPreview( true );
2566                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2567
2568                 # don't parse non-wikitext pages, show message about preview
2569                 # 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?
2570
2571                 if ( $this->isCssJsSubpage || !$this->mTitle->isWikitextPage() ) {
2572                         if( $this->mTitle->isCssJsSubpage() ) {
2573                                 $level = 'user';
2574                         } elseif( $this->mTitle->isCssOrJsPage() ) {
2575                                 $level = 'site';
2576                         } else {
2577                                 $level = false;
2578                         }
2579
2580                         # Used messages to make sure grep find them:
2581                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2582                         if( $level ) {
2583                                 if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2584                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2585                                         $class = "mw-code mw-css";
2586                                 } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2587                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2588                                         $class = "mw-code mw-js";
2589                                 } else {
2590                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2591                                 }
2592                         }
2593
2594                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2595                         $previewHTML = $parserOutput->mText;
2596                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2597                 } else {
2598                         $toparse = $this->textbox1;
2599
2600                         # If we're adding a comment, we need to show the
2601                         # summary as the headline
2602                         if ( $this->section == "new" && $this->summary != "" ) {
2603                                 $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2604                         }
2605
2606                         wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2607
2608                         $parserOptions->enableLimitReport();
2609
2610                         $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2611                         $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2612
2613                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2614                         if ( $rt ) {
2615                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2616                         } else {
2617                                 $previewHTML = $parserOutput->getText();
2618                         }
2619
2620                         $this->mParserOutput = $parserOutput;
2621                         $wgOut->addParserOutputNoText( $parserOutput );
2622
2623                         if ( count( $parserOutput->getWarnings() ) ) {
2624                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2625                         }
2626                 }
2627
2628                 if( $this->isConflict ) {
2629                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2630                 } else {
2631                         $conflict = '<hr />';
2632                 }
2633
2634                 $previewhead = "<div class='previewnote'>\n" .
2635                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2636                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2637
2638                 $pageLang = $this->mTitle->getPageLanguage();
2639                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2640                         'class' => 'mw-content-'.$pageLang->getDir() );
2641                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2642
2643                 wfProfileOut( __METHOD__ );
2644                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2645         }
2646
2647         /**
2648          * @return Array
2649          */
2650         function getTemplates() {
2651                 if ( $this->preview || $this->section != '' ) {
2652                         $templates = array();
2653                         if ( !isset( $this->mParserOutput ) ) {
2654                                 return $templates;
2655                         }
2656                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2657                                 foreach( array_keys( $template ) as $dbk ) {
2658                                         $templates[] = Title::makeTitle($ns, $dbk);
2659                                 }
2660                         }
2661                         return $templates;
2662                 } else {
2663                         return $this->mTitle->getTemplateLinksFrom();
2664                 }
2665         }
2666
2667         /**
2668          * Shows a bulletin board style toolbar for common editing functions.
2669          * It can be disabled in the user preferences.
2670          * The necessary JavaScript code can be found in skins/common/edit.js.
2671          *
2672          * @return string
2673          */
2674         static function getEditToolbar() {
2675                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2676                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2677
2678                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2679
2680                 /**
2681                  * $toolarray is an array of arrays each of which includes the
2682                  * filename of the button image (without path), the opening
2683                  * tag, the closing tag, optionally a sample text that is
2684                  * inserted between the two when no selection is highlighted
2685                  * and.  The tip text is shown when the user moves the mouse
2686                  * over the button.
2687                  *
2688                  * Also here: accesskeys (key), which are not used yet until
2689                  * someone can figure out a way to make them work in
2690                  * IE. However, we should make sure these keys are not defined
2691                  * on the edit page.
2692                  */
2693                 $toolarray = array(
2694                         array(
2695                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2696                                 'id'     => 'mw-editbutton-bold',
2697                                 'open'   => '\'\'\'',
2698                                 'close'  => '\'\'\'',
2699                                 'sample' => wfMsg( 'bold_sample' ),
2700                                 'tip'    => wfMsg( 'bold_tip' ),
2701                                 'key'    => 'B'
2702                         ),
2703                         array(
2704                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2705                                 'id'     => 'mw-editbutton-italic',
2706                                 'open'   => '\'\'',
2707                                 'close'  => '\'\'',
2708                                 'sample' => wfMsg( 'italic_sample' ),
2709                                 'tip'    => wfMsg( 'italic_tip' ),
2710                                 'key'    => 'I'
2711                         ),
2712                         array(
2713                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2714                                 'id'     => 'mw-editbutton-link',
2715                                 'open'   => '[[',
2716                                 'close'  => ']]',
2717                                 'sample' => wfMsg( 'link_sample' ),
2718                                 'tip'    => wfMsg( 'link_tip' ),
2719                                 'key'    => 'L'
2720                         ),
2721                         array(
2722                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2723                                 'id'     => 'mw-editbutton-extlink',
2724                                 'open'   => '[',
2725                                 'close'  => ']',
2726                                 'sample' => wfMsg( 'extlink_sample' ),
2727                                 'tip'    => wfMsg( 'extlink_tip' ),
2728                                 'key'    => 'X'
2729                         ),
2730                         array(
2731                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2732                                 'id'     => 'mw-editbutton-headline',
2733                                 'open'   => "\n== ",
2734                                 'close'  => " ==\n",
2735                                 'sample' => wfMsg( 'headline_sample' ),
2736                                 'tip'    => wfMsg( 'headline_tip' ),
2737                                 'key'    => 'H'
2738                         ),
2739                         $imagesAvailable ? array(
2740                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2741                                 'id'     => 'mw-editbutton-image',
2742                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2743                                 'close'  => ']]',
2744                                 'sample' => wfMsg( 'image_sample' ),
2745                                 'tip'    => wfMsg( 'image_tip' ),
2746                                 'key'    => 'D',
2747                         ) : false,
2748                         $imagesAvailable ? array(
2749                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2750                                 'id'     => 'mw-editbutton-media',
2751                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2752                                 'close'  => ']]',
2753                                 'sample' => wfMsg( 'media_sample' ),
2754                                 'tip'    => wfMsg( 'media_tip' ),
2755                                 'key'    => 'M'
2756                         ) : false,
2757                         $wgUseTeX ?     array(
2758                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2759                                 'id'     => 'mw-editbutton-math',
2760                                 'open'   => "<math>",
2761                                 'close'  => "</math>",
2762                                 'sample' => wfMsg( 'math_sample' ),
2763                                 'tip'    => wfMsg( 'math_tip' ),
2764                                 'key'    => 'C'
2765                         ) : false,
2766                         array(
2767                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2768                                 'id'     => 'mw-editbutton-nowiki',
2769                                 'open'   => "<nowiki>",
2770                                 'close'  => "</nowiki>",
2771                                 'sample' => wfMsg( 'nowiki_sample' ),
2772                                 'tip'    => wfMsg( 'nowiki_tip' ),
2773                                 'key'    => 'N'
2774                         ),
2775                         array(
2776                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2777                                 'id'     => 'mw-editbutton-signature',
2778                                 'open'   => '--~~~~',
2779                                 'close'  => '',
2780                                 'sample' => '',
2781                                 'tip'    => wfMsg( 'sig_tip' ),
2782                                 'key'    => 'Y'
2783                         ),
2784                         array(
2785                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2786                                 'id'     => 'mw-editbutton-hr',
2787                                 'open'   => "\n----\n",
2788                                 'close'  => '',
2789                                 'sample' => '',
2790                                 'tip'    => wfMsg( 'hr_tip' ),
2791                                 'key'    => 'R'
2792                         )
2793                 );
2794
2795                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
2796                 foreach ( $toolarray as $tool ) {
2797                         if ( !$tool ) {
2798                                 continue;
2799                         }
2800
2801                         $params = array(
2802                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2803                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2804                                 // Older browsers show a "speedtip" type message only for ALT.
2805                                 // Ideally these should be different, realistically they
2806                                 // probably don't need to be.
2807                                 $tip = $tool['tip'],
2808                                 $open = $tool['open'],
2809                                 $close = $tool['close'],
2810                                 $sample = $tool['sample'],
2811                                 $cssId = $tool['id'],
2812                         );
2813
2814                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2815                 }
2816
2817                 // This used to be called on DOMReady from mediawiki.action.edit, which
2818                 // ended up causing race conditions with the setup code above.
2819                 $script .= "\n" .
2820                         "// Create button bar\n" .
2821                         "$(function() { mw.toolbar.init(); } );\n";
2822
2823                 $script .= '});';
2824                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2825
2826                 $toolbar = '<div id="toolbar"></div>';
2827
2828                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2829
2830                 return $toolbar;
2831         }
2832
2833         /**
2834          * Returns an array of html code of the following checkboxes:
2835          * minor and watch
2836          *
2837          * @param $tabindex int Current tabindex
2838          * @param $checked Array of checkbox => bool, where bool indicates the checked
2839          *                 status of the checkbox
2840          *
2841          * @return array
2842          */
2843         public function getCheckboxes( &$tabindex, $checked ) {
2844                 global $wgUser;
2845
2846                 $checkboxes = array();
2847
2848                 // don't show the minor edit checkbox if it's a new page or section
2849                 if ( !$this->isNew ) {
2850                         $checkboxes['minor'] = '';
2851                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2852                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2853                                 $attribs = array(
2854                                         'tabindex'  => ++$tabindex,
2855                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2856                                         'id'        => 'wpMinoredit',
2857                                 );
2858                                 $checkboxes['minor'] =
2859                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2860                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2861                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2862                                         ">{$minorLabel}</label>";
2863                         }
2864                 }
2865
2866                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2867                 $checkboxes['watch'] = '';
2868                 if ( $wgUser->isLoggedIn() ) {
2869                         $attribs = array(
2870                                 'tabindex'  => ++$tabindex,
2871                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2872                                 'id'        => 'wpWatchthis',
2873                         );
2874                         $checkboxes['watch'] =
2875                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2876                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2877                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2878                                 ">{$watchLabel}</label>";
2879                 }
2880                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2881                 return $checkboxes;
2882         }
2883
2884         /**
2885          * Returns an array of html code of the following buttons:
2886          * save, diff, preview and live
2887          *
2888          * @param $tabindex int Current tabindex
2889          *
2890          * @return array
2891          */
2892         public function getEditButtons( &$tabindex ) {
2893                 $buttons = array();
2894
2895                 $temp = array(
2896                         'id'        => 'wpSave',
2897                         'name'      => 'wpSave',
2898                         'type'      => 'submit',
2899                         'tabindex'  => ++$tabindex,
2900                         'value'     => wfMsg( 'savearticle' ),
2901                         'accesskey' => wfMsg( 'accesskey-save' ),
2902                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2903                 );
2904                 $buttons['save'] = Xml::element('input', $temp, '');
2905
2906                 ++$tabindex; // use the same for preview and live preview
2907                 $temp = array(
2908                         'id'        => 'wpPreview',
2909                         'name'      => 'wpPreview',
2910                         'type'      => 'submit',
2911                         'tabindex'  => $tabindex,
2912                         'value'     => wfMsg( 'showpreview' ),
2913                         'accesskey' => wfMsg( 'accesskey-preview' ),
2914                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2915                 );
2916                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2917                 $buttons['live'] = '';
2918
2919                 $temp = array(
2920                         'id'        => 'wpDiff',
2921                         'name'      => 'wpDiff',
2922                         'type'      => 'submit',
2923                         'tabindex'  => ++$tabindex,
2924                         'value'     => wfMsg( 'showdiff' ),
2925                         'accesskey' => wfMsg( 'accesskey-diff' ),
2926                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2927                 );
2928                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2929
2930                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2931                 return $buttons;
2932         }
2933
2934         /**
2935          * Output preview text only. This can be sucked into the edit page
2936          * via JavaScript, and saves the server time rendering the skin as
2937          * well as theoretically being more robust on the client (doesn't
2938          * disturb the edit box's undo history, won't eat your text on
2939          * failure, etc).
2940          *
2941          * @todo This doesn't include category or interlanguage links.
2942          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2943          *       or something...</s> that might also require more skin
2944          *       initialization, so check whether that's a problem.
2945          */
2946         function livePreview() {
2947                 global $wgOut;
2948                 $wgOut->disable();
2949                 header( 'Content-type: text/xml; charset=utf-8' );
2950                 header( 'Cache-control: no-cache' );
2951
2952                 $previewText = $this->getPreviewText();
2953                 #$categories = $skin->getCategoryLinks();
2954
2955                 $s =
2956                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2957                 Xml::tags( 'livepreview', null,
2958                         Xml::element( 'preview', null, $previewText )
2959                         #.      Xml::element( 'category', null, $categories )
2960                 );
2961                 echo $s;
2962         }
2963
2964         /**
2965          * Call the stock "user is blocked" page
2966          *
2967          * @deprecated in 1.19; throw an exception directly instead
2968          */
2969         function blockedPage() {
2970                 wfDeprecated( __METHOD__, '1.19' );
2971                 global $wgUser;
2972
2973                 throw new UserBlockedError( $wgUser->mBlock );
2974         }
2975
2976         /**
2977          * Produce the stock "please login to edit pages" page
2978          *
2979          * @deprecated in 1.19; throw an exception directly instead
2980          */
2981         function userNotLoggedInPage() {
2982                 wfDeprecated( __METHOD__, '1.19' );
2983                 throw new PermissionsError( 'edit' );
2984         }
2985
2986         /**
2987          * Show an error page saying to the user that he has insufficient permissions
2988          * to create a new page
2989          *
2990          * @deprecated in 1.19; throw an exception directly instead
2991          */
2992         function noCreatePermission() {
2993                 wfDeprecated( __METHOD__, '1.19' );
2994                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
2995                 throw new PermissionsError( $permission );
2996         }
2997
2998         /**
2999          * Creates a basic error page which informs the user that
3000          * they have attempted to edit a nonexistent section.
3001          */
3002         function noSuchSectionPage() {
3003                 global $wgOut;
3004
3005                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3006
3007                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
3008                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3009                 $wgOut->addHTML( $res );
3010
3011                 $wgOut->returnToMain( false, $this->mTitle );
3012         }
3013
3014         /**
3015          * Produce the stock "your edit contains spam" page
3016          *
3017          * @param $match string Text which triggered one or more filters
3018          * @deprecated since 1.17 Use method spamPageWithContent() instead
3019          */
3020         static function spamPage( $match = false ) {
3021                 wfDeprecated( __METHOD__, '1.17' );
3022
3023                 global $wgOut, $wgTitle;
3024
3025                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3026
3027                 $wgOut->addHTML( '<div id="spamprotected">' );
3028                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3029                 if ( $match ) {
3030                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3031                 }
3032                 $wgOut->addHTML( '</div>' );
3033
3034                 $wgOut->returnToMain( false, $wgTitle );
3035         }
3036
3037         /**
3038          * Show "your edit contains spam" page with your diff and text
3039          *
3040          * @param $match string|bool Text which triggered one or more filters
3041          */
3042         public function spamPageWithContent( $match = false ) {
3043                 global $wgOut;
3044                 $this->textbox2 = $this->textbox1;
3045
3046                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3047
3048                 $wgOut->addHTML( '<div id="spamprotected">' );
3049                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3050                 if ( $match ) {
3051                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3052                 }
3053                 $wgOut->addHTML( '</div>' );
3054
3055                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3056                 $de = new DifferenceEngine( $this->mArticle->getContext() );
3057                 $de->setText( $this->getCurrentText(), $this->textbox2 );
3058                 $de->showDiff( wfMsg( "storedversion" ), wfMsgExt( 'yourtext', 'parseinline' ) );
3059
3060                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3061                 $this->showTextbox2();
3062
3063                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3064         }
3065
3066         /**
3067          * Format an anchor fragment as it would appear for a given section name
3068          * @param $text String
3069          * @return String
3070          * @private
3071          */
3072         function sectionAnchor( $text ) {
3073                 global $wgParser;
3074                 return $wgParser->guessSectionNameFromWikiText( $text );
3075         }
3076
3077         /**
3078          * Check if the browser is on a blacklist of user-agents known to
3079          * mangle UTF-8 data on form submission. Returns true if Unicode
3080          * should make it through, false if it's known to be a problem.
3081          * @return bool
3082          * @private
3083          */
3084         function checkUnicodeCompliantBrowser() {
3085                 global $wgBrowserBlackList;
3086                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
3087                         // No User-Agent header sent? Trust it by default...
3088                         return true;
3089                 }
3090                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
3091                 foreach ( $wgBrowserBlackList as $browser ) {
3092                         if ( preg_match($browser, $currentbrowser) ) {
3093                                 return false;
3094                         }
3095                 }
3096                 return true;
3097         }
3098
3099         /**
3100          * Filter an input field through a Unicode de-armoring process if it
3101          * came from an old browser with known broken Unicode editing issues.
3102          *
3103          * @param $request WebRequest
3104          * @param $field String
3105          * @return String
3106          * @private
3107          */
3108         function safeUnicodeInput( $request, $field ) {
3109                 $text = rtrim( $request->getText( $field ) );
3110                 return $request->getBool( 'safemode' )
3111                         ? $this->unmakesafe( $text )
3112                         : $text;
3113         }
3114
3115         /**
3116          * @param $request WebRequest
3117          * @param $text string
3118          * @return string
3119          */
3120         function safeUnicodeText( $request, $text ) {
3121                 $text = rtrim( $text );
3122                 return $request->getBool( 'safemode' )
3123                         ? $this->unmakesafe( $text )
3124                         : $text;
3125         }
3126
3127         /**
3128          * Filter an output field through a Unicode armoring process if it is
3129          * going to an old browser with known broken Unicode editing issues.
3130          *
3131          * @param $text String
3132          * @return String
3133          * @private
3134          */
3135         function safeUnicodeOutput( $text ) {
3136                 global $wgContLang;
3137                 $codedText = $wgContLang->recodeForEdit( $text );
3138                 return $this->checkUnicodeCompliantBrowser()
3139                         ? $codedText
3140                         : $this->makesafe( $codedText );
3141         }
3142
3143         /**
3144          * A number of web browsers are known to corrupt non-ASCII characters
3145          * in a UTF-8 text editing environment. To protect against this,
3146          * detected browsers will be served an armored version of the text,
3147          * with non-ASCII chars converted to numeric HTML character references.
3148          *
3149          * Preexisting such character references will have a 0 added to them
3150          * to ensure that round-trips do not alter the original data.
3151          *
3152          * @param $invalue String
3153          * @return String
3154          * @private
3155          */
3156         function makesafe( $invalue ) {
3157                 // Armor existing references for reversability.
3158                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3159
3160                 $bytesleft = 0;
3161                 $result = "";
3162                 $working = 0;
3163                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3164                         $bytevalue = ord( $invalue[$i] );
3165                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
3166                                 $result .= chr( $bytevalue );
3167                                 $bytesleft = 0;
3168                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
3169                                 $working = $working << 6;
3170                                 $working += ($bytevalue & 0x3F);
3171                                 $bytesleft--;
3172                                 if ( $bytesleft <= 0 ) {
3173                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3174                                 }
3175                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
3176                                 $working = $bytevalue & 0x1F;
3177                                 $bytesleft = 1;
3178                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
3179                                 $working = $bytevalue & 0x0F;
3180                                 $bytesleft = 2;
3181                         } else { //1111 0xxx
3182                                 $working = $bytevalue & 0x07;
3183                                 $bytesleft = 3;
3184                         }
3185                 }
3186                 return $result;
3187         }
3188
3189         /**
3190          * Reverse the previously applied transliteration of non-ASCII characters
3191          * back to UTF-8. Used to protect data from corruption by broken web browsers
3192          * as listed in $wgBrowserBlackList.
3193          *
3194          * @param $invalue String
3195          * @return String
3196          * @private
3197          */
3198         function unmakesafe( $invalue ) {
3199                 $result = "";
3200                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3201                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
3202                                 $i += 3;
3203                                 $hexstring = "";
3204                                 do {
3205                                         $hexstring .= $invalue[$i];
3206                                         $i++;
3207                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3208
3209                                 // Do some sanity checks. These aren't needed for reversability,
3210                                 // but should help keep the breakage down if the editor
3211                                 // breaks one of the entities whilst editing.
3212                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
3213                                         $codepoint = hexdec($hexstring);
3214                                         $result .= codepointToUtf8( $codepoint );
3215                                 } else {
3216                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3217                                 }
3218                         } else {
3219                                 $result .= substr( $invalue, $i, 1 );
3220                         }
3221                 }
3222                 // reverse the transform that we made for reversability reasons.
3223                 return strtr( $result, array( "&#x0" => "&#x" ) );
3224         }
3225 }