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