includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split from Article)
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * EditPage cares about two distinct titles:
  14  * $this->mContextTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  *
  19  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  20  * headaches, which may be fatal.
  21  */
  22 class EditPage {
  23
  24         /**
  25          * Status: Article successfully updated
  26          */
  27         const AS_SUCCESS_UPDATE            = 200;
  28
  29         /**
  30          * Status: Article successfully created
  31          */
  32         const AS_SUCCESS_NEW_ARTICLE       = 201;
  33
  34         /**
  35          * Status: Article update aborted by a hook function
  36          */
  37         const AS_HOOK_ERROR                = 210;
  38
  39         /**
  40          * Status: The filter function set in $wgFilterCallback returned true (= block it)
  41          */
  42         const AS_FILTERING                 = 211;
  43
  44         /**
  45          * Status: A hook function returned an error
  46          */
  47         const AS_HOOK_ERROR_EXPECTED       = 212;
  48
  49         /**
  50          * Status: User is blocked from editting this page
  51          */
  52         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  53
  54         /**
  55          * Status: Content too big (> $wgMaxArticleSize)
  56          */
  57         const AS_CONTENT_TOO_BIG           = 216;
  58
  59         /**
  60          * Status: User cannot edit? (not used)
  61          */
  62         const AS_USER_CANNOT_EDIT          = 217;
  63
  64         /**
  65          * Status: this anonymous user is not allowed to edit this page
  66          */
  67         const AS_READ_ONLY_PAGE_ANON       = 218;
  68
  69         /**
  70          * Status: this logged in user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  73
  74         /**
  75          * Status: wiki is in readonly mode (wfReadOnly() == true)
  76          */
  77         const AS_READ_ONLY_PAGE            = 220;
  78
  79         /**
  80          * Status: rate limiter for action 'edit' was tripped
  81          */
  82         const AS_RATE_LIMITED              = 221;
  83
  84         /**
  85          * Status: article was deleted while editting and param wpRecreate == false or form
  86          * was not posted
  87          */
  88         const AS_ARTICLE_WAS_DELETED       = 222;
  89
  90         /**
  91          * Status: user tried to create this page, but is not allowed to do that
  92          * ( Title->usercan('create') == false )
  93          */
  94         const AS_NO_CREATE_PERMISSION      = 223;
  95
  96         /**
  97          * Status: user tried to create a blank page
  98          */
  99         const AS_BLANK_ARTICLE             = 224;
 100
 101         /**
 102          * Status: (non-resolvable) edit conflict
 103          */
 104         const AS_CONFLICT_DETECTED         = 225;
 105
 106         /**
 107          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 108          * editting in his own userspace or talkspace and wpIgnoreBlankSummary == false
 109          */
 110         const AS_SUMMARY_NEEDED            = 226;
 111
 112         /**
 113          * Status: user tried to create a new section without content
 114          */
 115         const AS_TEXTBOX_EMPTY             = 228;
 116
 117         /**
 118          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 119          */
 120         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 121
 122         /**
 123          * not used
 124          */
 125         const AS_OK                        = 230;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessfull
 129          */
 130         const AS_END                       = 231;
 131
 132         /**
 133          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 134          */
 135         const AS_SPAM_ERROR                = 232;
 136
 137         /**
 138          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 139          */
 140         const AS_IMAGE_REDIRECT_ANON       = 233;
 141
 142         /**
 143          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 144          */
 145         const AS_IMAGE_REDIRECT_LOGGED     = 234;
 146
 147         /**
 148          * @var Article
 149          */
 150         var $mArticle;
 151
 152         /**
 153          * @var Title
 154          */
 155         var $mTitle;
 156         private $mContextTitle = null;
 157         var $action = 'submit';
 158         var $isConflict = false;
 159         var $isCssJsSubpage = false;
 160         var $isCssSubpage = false;
 161         var $isJsSubpage = false;
 162         var $isWrongCaseCssJsPage = false;
 163         var $isNew = false; // new page or new section
 164         var $deletedSinceEdit;
 165         var $formtype;
 166         var $firsttime;
 167         var $lastDelete;
 168         var $mTokenOk = false;
 169         var $mTokenOkExceptSuffix = false;
 170         var $mTriedSave = false;
 171         var $incompleteForm = false;
 172         var $tooBig = false;
 173         var $kblength = false;
 174         var $missingComment = false;
 175         var $missingSummary = false;
 176         var $allowBlankSummary = false;
 177         var $autoSumm = '';
 178         var $hookError = '';
 179         #var $mPreviewTemplates;
 180
 181         /**
 182          * @var ParserOutput
 183          */
 184         var $mParserOutput;
 185
 186         var $mBaseRevision = false;
 187         var $mShowSummaryField = true;
 188
 189         # Form values
 190         var $save = false, $preview = false, $diff = false;
 191         var $minoredit = false, $watchthis = false, $recreate = false;
 192         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 193         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 194         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 195     var $content_model = null, $content_format = null;
 196
 197         # Placeholders for text injection by hooks (must be HTML)
 198         # extensions should take care to _append_ to the present value
 199         public $editFormPageTop = ''; // Before even the preview
 200         public $editFormTextTop = '';
 201         public $editFormTextBeforeContent = '';
 202         public $editFormTextAfterWarn = '';
 203         public $editFormTextAfterTools = '';
 204         public $editFormTextBottom = '';
 205         public $editFormTextAfterContent = '';
 206         public $previewTextAfterContent = '';
 207         public $mPreloadContent = null;
 208
 209         /* $didSave should be set to true whenever an article was succesfully altered. */
 210         public $didSave = false;
 211         public $undidRev = 0;
 212
 213         public $suppressIntro = false;
 214
 215         /**
 216          * @param $article Article
 217          */
 218         public function __construct( Article $article ) {
 219                 $this->mArticle = $article;
 220                 $this->mTitle = $article->getTitle();
 221
 222         $this->content_model = $this->mTitle->getContentModelName();
 223
 224         $handler = ContentHandler::getForModelName( $this->content_model );
 225         $this->content_format = $handler->getDefaultFormat(); #NOTE: should be overridden by format of actual revision
 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->getContentObject();
 438
 439                 # Use the normal message if there's nothing to display
 440                 if ( $this->firsttime && $content->isEmpty() ) {
 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             $handler = ContentHandler::getForModelName( $this->content_model );
 455
 456             if ( empty( $this->textbox1 ) ) $content = $handler->emptyContent();
 457                         else $content = $handler->unserialize( $this->textbox1 );
 458
 459                         $wgOut->addWikiMsg( 'viewyourtext' );
 460                 } else {
 461                         $wgOut->addWikiMsg( 'viewsourcetext' );
 462                 }
 463
 464         $text = $content->serialize( $this->content_format );
 465                 $this->showTextbox( $text, 'wpTextbox1', array( 'readonly' ) );
 466
 467                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 468                         Linker::formatTemplates( $this->getTemplates() ) ) );
 469
 470                 if ( $this->mTitle->exists() ) {
 471                         $wgOut->returnToMain( null, $this->mTitle );
 472                 }
 473         }
 474
 475         /**
 476          * Show a read-only error
 477          * Parameters are the same as OutputPage:readOnlyPage()
 478          * Redirect to the article page if redlink=1
 479          * @deprecated in 1.19; use displayPermissionsError() instead
 480          */
 481         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 482                 wfDeprecated( __METHOD__, '1.19' );
 483
 484                 global $wgRequest, $wgOut;
 485                 if ( $wgRequest->getBool( 'redlink' ) ) {
 486                         // The edit page was reached via a red link.
 487                         // Redirect to the article page and let them click the edit tab if
 488                         // they really want a permission error.
 489                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 490                 } else {
 491                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 492                 }
 493         }
 494
 495         /**
 496          * Should we show a preview when the edit form is first shown?
 497          *
 498          * @return bool
 499          */
 500         protected function previewOnOpen() {
 501                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 502                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 503                         // Explicit override from request
 504                         return true;
 505                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 506                         // Explicit override from request
 507                         return false;
 508                 } elseif ( $this->section == 'new' ) {
 509                         // Nothing *to* preview for new sections
 510                         return false;
 511                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 512                         // Standard preference behaviour
 513                         return true;
 514                 } elseif ( !$this->mTitle->exists() &&
 515                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 516                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 517                 {
 518                         // Categories are special
 519                         return true;
 520                 } else {
 521                         return false;
 522                 }
 523         }
 524
 525         /**
 526          * Checks whether the user entered a skin name in uppercase,
 527          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 528          *
 529          * @return bool
 530          */
 531         protected function isWrongCaseCssJsPage() {
 532                 if( $this->mTitle->isCssJsSubpage() ) {
 533                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 534                         $skins = array_merge(
 535                                 array_keys( Skin::getSkinNames() ),
 536                                 array( 'common' )
 537                         );
 538                         return !in_array( $name, $skins )
 539                                 && in_array( strtolower( $name ), $skins );
 540                 } else {
 541                         return false;
 542                 }
 543         }
 544
 545         /**
 546          * Does this EditPage class support section editing?
 547          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 548          *
 549          * @return bool
 550          */
 551         protected function isSectionEditSupported() {
 552                 return true;
 553         }
 554
 555         /**
 556          * This function collects the form data and uses it to populate various member variables.
 557          * @param $request WebRequest
 558          */
 559         function importFormData( &$request ) {
 560                 global $wgLang, $wgUser;
 561
 562                 wfProfileIn( __METHOD__ );
 563
 564                 # Section edit can come from either the form or a link
 565                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 566
 567                 if ( $request->wasPosted() ) {
 568                         # These fields need to be checked for encoding.
 569                         # Also remove trailing whitespace, but don't remove _initial_
 570                         # whitespace from the text boxes. This may be significant formatting.
 571                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 572                         if ( !$request->getCheck('wpTextbox2') ) {
 573                                 // Skip this if wpTextbox2 has input, it indicates that we came
 574                                 // from a conflict page with raw page text, not a custom form
 575                                 // modified by subclasses
 576                                 wfProfileIn( get_class($this)."::importContentFormData" );
 577                                 $textbox1 = $this->importContentFormData( $request ); #FIXME: what should this return??
 578                                 if ( isset($textbox1) )
 579                                         $this->textbox1 = $textbox1; #XXX: unserialize to Content-object... when?
 580                                 wfProfileOut( get_class($this)."::importContentFormData" );
 581                         }
 582
 583                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 584                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 585
 586                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 587                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 588                         # section titles.
 589                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 590
 591                         # Treat sectiontitle the same way as summary.
 592                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 593                         # currently doing double duty as both edit summary and section title. Right now this
 594                         # is just to allow API edits to work around this limitation, but this should be
 595                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 596                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 597                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 598
 599                         $this->edittime = $request->getVal( 'wpEdittime' );
 600                         $this->starttime = $request->getVal( 'wpStarttime' );
 601
 602                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 603
 604                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 605                                 // wpTextbox1 field is missing, possibly due to being "too big"
 606                                 // according to some filter rules such as Suhosin's setting for
 607                                 // suhosin.request.max_value_length (d'oh)
 608                                 $this->incompleteForm = true;
 609                         } else {
 610                                 // edittime should be one of our last fields; if it's missing,
 611                                 // the submission probably broke somewhere in the middle.
 612                                 $this->incompleteForm = is_null( $this->edittime );
 613                         }
 614                         if ( $this->incompleteForm ) {
 615                                 # If the form is incomplete, force to preview.
 616                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 617                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 618                                 $this->preview = true;
 619                         } else {
 620                                 /* Fallback for live preview */
 621                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 622                                 $this->diff = $request->getCheck( 'wpDiff' );
 623
 624                                 // Remember whether a save was requested, so we can indicate
 625                                 // if we forced preview due to session failure.
 626                                 $this->mTriedSave = !$this->preview;
 627
 628                                 if ( $this->tokenOk( $request ) ) {
 629                                         # Some browsers will not report any submit button
 630                                         # if the user hits enter in the comment box.
 631                                         # The unmarked state will be assumed to be a save,
 632                                         # if the form seems otherwise complete.
 633                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 634                                 } elseif ( $this->diff ) {
 635                                         # Failed token check, but only requested "Show Changes".
 636                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 637                                 } else {
 638                                         # Page might be a hack attempt posted from
 639                                         # an external site. Preview instead of saving.
 640                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 641                                         $this->preview = true;
 642                                 }
 643                         }
 644                         $this->save = !$this->preview && !$this->diff;
 645                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 646                                 $this->edittime = null;
 647                         }
 648
 649                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 650                                 $this->starttime = null;
 651                         }
 652
 653                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 654
 655                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 656                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 657
 658                         # Don't force edit summaries when a user is editing their own user or talk page
 659                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 660                                 $this->mTitle->getText() == $wgUser->getName() )
 661                         {
 662                                 $this->allowBlankSummary = true;
 663                         } else {
 664                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 665                         }
 666
 667                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 668                 } else {
 669                         # Not a posted form? Start with nothing.
 670                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 671                         $this->textbox1     = ''; #FIXME: track content object
 672                         $this->summary      = '';
 673                         $this->sectiontitle = '';
 674                         $this->edittime     = '';
 675                         $this->starttime    = wfTimestampNow();
 676                         $this->edit         = false;
 677                         $this->preview      = false;
 678                         $this->save         = false;
 679                         $this->diff         = false;
 680                         $this->minoredit    = false;
 681                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 682                         $this->recreate     = false;
 683
 684                         // When creating a new section, we can preload a section title by passing it as the
 685                         // preloadtitle parameter in the URL (Bug 13100)
 686                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 687                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 688                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 689                                 $this->summary = $request->getVal( 'preloadtitle' );
 690                         }
 691                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 692                                 $this->summary = $request->getText( 'summary' );
 693                         }
 694
 695                         if ( $request->getVal( 'minor' ) ) {
 696                                 $this->minoredit = true;
 697                         }
 698                 }
 699
 700         $this->oldid = $request->getInt( 'oldid' );
 701
 702                 $this->bot = $request->getBool( 'bot', true );
 703                 $this->nosummary = $request->getBool( 'nosummary' );
 704
 705         $content_handler = ContentHandler::getForTitle( $this->mTitle );
 706                 $this->content_model = $request->getText( 'model', $content_handler->getModelName() ); #may be overridden by revision
 707         $this->content_format = $request->getText( 'format', $content_handler->getDefaultFormat() ); #may be overridden by revision
 708
 709                 $this->live = $request->getCheck( 'live' );
 710                 $this->editintro = $request->getText( 'editintro',
 711                         // Custom edit intro for new sections
 712                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 713
 714                 // Allow extensions to modify form data
 715                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 716
 717                 wfProfileOut( __METHOD__ );
 718         }
 719
 720         /**
 721          * Subpage overridable method for extracting the page content data from the
 722          * posted form to be placed in $this->textbox1, if using customized input
 723          * this method should be overrided and return the page text that will be used
 724          * for saving, preview parsing and so on...
 725          *
 726          * @param $request WebRequest
 727          */
 728         protected function importContentFormData( &$request ) {
 729                 return; // Don't do anything, EditPage already extracted wpTextbox1
 730         }
 731
 732         /**
 733          * Initialise form fields in the object
 734          * Called on the first invocation, e.g. when a user clicks an edit link
 735          * @return bool -- if the requested section is valid
 736          */
 737         function initialiseForm() {
 738                 global $wgUser;
 739                 $this->edittime = $this->mArticle->getTimestamp();
 740
 741         $content = $this->getContentObject( false ); #TODO: track content object?!
 742                 $this->textbox1 = $content->serialize( $this->content_format );
 743
 744                 // activate checkboxes if user wants them to be always active
 745                 # Sort out the "watch" checkbox
 746                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 747                         # Watch all edits
 748                         $this->watchthis = true;
 749                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 750                         # Watch creations
 751                         $this->watchthis = true;
 752                 } elseif ( $this->mTitle->userIsWatching() ) {
 753                         # Already watched
 754                         $this->watchthis = true;
 755                 }
 756                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 757                         $this->minoredit = true;
 758                 }
 759                 if ( $this->textbox1 === false ) {
 760                         return false;
 761                 }
 762                 wfProxyCheck();
 763                 return true;
 764         }
 765
 766         /**
 767          * Fetch initial editing page content.
 768          *
 769          * @param $def_text string
 770          * @return mixed string on success, $def_text for invalid sections
 771          * @private
 772      * @deprecated since 1.20
 773          */
 774     function getContent( $def_text = false ) { #FIXME: deprecated, replace usage!
 775         if ( $def_text !== null && $def_text !== false && $def_text !== '' ) {
 776             $def_content = ContentHandler::makeContent( $def_text, $this->getTitle() );
 777         } else {
 778             $def_content = false;
 779         }
 780
 781         $content = $this->getContentObject( $def_content );
 782
 783         return $content->serialize( $this->content_format ); #XXX: really use serialized form? use ContentHandler::getContentText() instead?
 784     }
 785
 786         private function getContentObject( $def_content = null ) { #FIXME: use this!
 787                 global $wgOut, $wgRequest;
 788
 789                 wfProfileIn( __METHOD__ );
 790
 791                 $content = false;
 792
 793                 // For message page not locally set, use the i18n message.
 794                 // For other non-existent articles, use preload text if any.
 795                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 796                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 797                                 # If this is a system message, get the default text.
 798                                 $msg = $this->mTitle->getDefaultMessageText();
 799
 800                 $content = new WikitextContent($msg); //XXX: really hardcode wikitext here?
 801                         }
 802                         if ( $content === false ) {
 803                                 # If requested, preload some text.
 804                                 $preload = $wgRequest->getVal( 'preload',
 805                                         // Custom preload text for new sections
 806                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 807
 808                                 $content = $this->getPreloadedContent( $preload );
 809                         }
 810                 // For existing pages, get text based on "undo" or section parameters.
 811                 } else {
 812                         if ( $this->section != '' ) {
 813                                 // Get section edit text (returns $def_text for invalid sections)
 814                 $orig = $this->getOriginalContent();
 815                 $content = $orig ? $orig->getSection( $this->section ) : null;
 816
 817                 if ( !$content ) $content = $def_content;
 818                         } else {
 819                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 820                                 $undo = $wgRequest->getInt( 'undo' );
 821
 822                                 if ( $undo > 0 && $undoafter > 0 ) {
 823                                         if ( $undo < $undoafter ) {
 824                                                 # If they got undoafter and undo round the wrong way, switch them
 825                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 826                                         }
 827
 828                                         $undorev = Revision::newFromId( $undo );
 829                                         $oldrev = Revision::newFromId( $undoafter );
 830
 831                                         # Sanity check, make sure it's the right page,
 832                                         # the revisions exist and they were not deleted.
 833                                         # Otherwise, $content will be left as-is.
 834                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 835                                                 $undorev->getPage() == $oldrev->getPage() &&
 836                                                 $undorev->getPage() == $this->mTitle->getArticleId() &&
 837                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 838                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 839
 840                                                 $content = $this->mArticle->getUndoContent( $undorev, $oldrev );
 841
 842                                                 if ( $content === false ) {
 843                                                         # Warn the user that something went wrong
 844                                                         $undoMsg = 'failure';
 845                                                 } else {
 846                                                         # Inform the user of our success and set an automatic edit summary
 847                                                         $undoMsg = 'success';
 848
 849                                                         # If we just undid one rev, use an autosummary
 850                                                         $firstrev = $oldrev->getNext();
 851                                                         if ( $firstrev->getId() == $undo ) {
 852                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 853                                                                 if ( $this->summary === '' ) {
 854                                                                         $this->summary = $undoSummary;
 855                                                                 } else {
 856                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 857                                                                 }
 858                                                                 $this->undidRev = $undo;
 859                                                         }
 860                                                         $this->formtype = 'diff';
 861                                                 }
 862                                         } else {
 863                                                 // Failed basic sanity checks.
 864                                                 // Older revisions may have been removed since the link
 865                                                 // was created, or we may simply have got bogus input.
 866                                                 $undoMsg = 'norev';
 867                                         }
 868
 869                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"error mw-undo-{$undoMsg}\">" .
 870                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 871                                 }
 872
 873                                 if ( $content === false ) {
 874                                         $content = $this->getOriginalContent();
 875                                 }
 876                         }
 877                 }
 878
 879                 wfProfileOut( __METHOD__ );
 880                 return $content;
 881         }
 882
 883         /**
 884          * Get the content of the wanted revision, without section extraction.
 885          *
 886          * The result of this function can be used to compare user's input with
 887          * section replaced in its context (using WikiPage::replaceSection())
 888          * to the original text of the edit.
 889          *
 890          * This difers from Article::getContent() that when a missing revision is
 891          * encountered the result will be an empty string and not the
 892          * 'missing-article' message.
 893          *
 894          * @since 1.19
 895          * @return string
 896          */
 897         private function getOriginalContent() { #FIXME: use Content! set content_model and content_format!
 898                 if ( $this->section == 'new' ) {
 899                         return $this->getCurrentContent();
 900                 }
 901                 $revision = $this->mArticle->getRevisionFetched();
 902                 if ( $revision === null ) {
 903             if ( !$this->content_model ) $this->content_model = $this->getTitle()->getContentModelName();
 904             $handler = ContentHandler::getForModelName( $this->content_model );
 905
 906             return $handler->emptyContent();
 907                 }
 908
 909         $content = $this->mArticle->getContentObject();
 910                 return $content;
 911         }
 912
 913         /**
 914          * Get the current content of the page. This is basically similar to
 915          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
 916          * content object is returned instead of null.
 917          *
 918          * @since 1.20
 919          * @return string
 920          */
 921         private function getCurrentContent() {
 922         $rev = $this->mArticle->getRevision();
 923                 $content = $rev->getContentObject( Revision::RAW );
 924
 925                 if ( $content  === false || $content === null ) {
 926             if ( !$this->content_model ) $this->content_model = $this->getTitle()->getContentModelName();
 927             $handler = ContentHandler::getForModelName( $this->content_model );
 928
 929                         return $handler->emptyContent();
 930                 } else {
 931             #FIXME: nasty side-effect!
 932             $this->content_model = $rev->getContentModelName();
 933             $this->content_format = $rev->getContentFormat();
 934
 935                         return $content;
 936                 }
 937         }
 938
 939         /**
 940          * Use this method before edit() to preload some text into the edit box
 941          *
 942          * @param $text string
 943      * @deprecated since 1.20
 944          */
 945         public function setPreloadedText( $text ) { #FIXME: deprecated, use setPreloadedContent()
 946         wfDeprecated( __METHOD__, "1.20" );
 947
 948         $content = ContentHandler::makeContent( $text, $this->getTitle() );
 949
 950                 $this->setPreloadedContent( $content );
 951         }
 952
 953     /**
 954      * Use this method before edit() to preload some content into the edit box
 955      *
 956      * @param $content Content
 957      */
 958     public function setPreloadedContent( Content $content ) { #FIXME: use this!
 959         $this->mPreloadedContent = $content;
 960     }
 961
 962         /**
 963          * Get the contents to be preloaded into the box, either set by
 964          * an earlier setPreloadText() or by loading the given page.
 965          *
 966          * @param $preload String: representing the title to preload from.
 967          * @return String
 968      * @deprecated since 1.20
 969          */
 970     protected function getPreloadedText( $preload ) { #FIXME: B/C only, replace usage!
 971         wfDeprecated( __METHOD__, "1.20" );
 972
 973         $content = $this->getPreloadedContent( $preload );
 974         $text = $content->serialize( $this->content_format ); #XXX: really use serialized form? use ContentHandler::getContentText() instead?!
 975
 976         return $text;
 977     }
 978
 979         protected function getPreloadedContent( $preload ) { #FIXME: use this!
 980                 global $wgUser;
 981
 982                 if ( !empty( $this->mPreloadContent ) ) {
 983                         return $this->mPreloadContent;
 984                 }
 985
 986         $handler = ContentHandler::getForTitle( $this->getTitle() );
 987
 988                 if ( $preload === '' ) {
 989                         return $handler->emptyContent();
 990                 }
 991
 992                 $title = Title::newFromText( $preload );
 993                 # Check for existence to avoid getting MediaWiki:Noarticletext
 994                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 995             return $handler->emptyContent();
 996                 }
 997
 998                 $page = WikiPage::factory( $title );
 999                 if ( $page->isRedirect() ) {
1000                         $title = $page->getRedirectTarget();
1001                         # Same as before
1002                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
1003                 return $handler->emptyContent();
1004                         }
1005                         $page = WikiPage::factory( $title );
1006                 }
1007
1008                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1009         $content = $page->getContent( Revision::RAW );
1010
1011                 return $content->preloadTransform( $title, $parserOptions );
1012         }
1013
1014         /**
1015          * Make sure the form isn't faking a user's credentials.
1016          *
1017          * @param $request WebRequest
1018          * @return bool
1019          * @private
1020          */
1021         function tokenOk( &$request ) {
1022                 global $wgUser;
1023                 $token = $request->getVal( 'wpEditToken' );
1024                 $this->mTokenOk = $wgUser->matchEditToken( $token );
1025                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
1026                 return $this->mTokenOk;
1027         }
1028
1029         /**
1030          * Attempt submission
1031          * @return bool false if output is done, true if the rest of the form should be displayed
1032          */
1033         function attemptSave() {
1034                 global $wgUser, $wgOut;
1035
1036                 $resultDetails = false;
1037                 # Allow bots to exempt some edits from bot flagging
1038                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
1039                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1040                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
1041
1042                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
1043                         $this->didSave = true;
1044                 }
1045
1046                 switch ( $status->value ) {
1047                         case self::AS_HOOK_ERROR_EXPECTED:
1048                         case self::AS_CONTENT_TOO_BIG:
1049                         case self::AS_ARTICLE_WAS_DELETED:
1050                         case self::AS_CONFLICT_DETECTED:
1051                         case self::AS_SUMMARY_NEEDED:
1052                         case self::AS_TEXTBOX_EMPTY:
1053                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1054                         case self::AS_END:
1055                                 return true;
1056
1057                         case self::AS_HOOK_ERROR:
1058                         case self::AS_FILTERING:
1059                                 return false;
1060
1061                         case self::AS_SUCCESS_NEW_ARTICLE:
1062                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1063                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1064                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1065                                 return false;
1066
1067                         case self::AS_SUCCESS_UPDATE:
1068                                 $extraQuery = '';
1069                                 $sectionanchor = $resultDetails['sectionanchor'];
1070
1071                                 // Give extensions a chance to modify URL query on update
1072                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
1073
1074                                 if ( $resultDetails['redirect'] ) {
1075                                         if ( $extraQuery == '' ) {
1076                                                 $extraQuery = 'redirect=no';
1077                                         } else {
1078                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1079                                         }
1080                                 }
1081                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1082                                 return false;
1083
1084                         case self::AS_BLANK_ARTICLE:
1085                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
1086                                 return false;
1087
1088                         case self::AS_SPAM_ERROR:
1089                                 $this->spamPageWithContent( $resultDetails['spam'] );
1090                                 return false;
1091
1092                         case self::AS_BLOCKED_PAGE_FOR_USER:
1093                                 throw new UserBlockedError( $wgUser->mBlock );
1094
1095                         case self::AS_IMAGE_REDIRECT_ANON:
1096                         case self::AS_IMAGE_REDIRECT_LOGGED:
1097                                 throw new PermissionsError( 'upload' );
1098
1099                         case self::AS_READ_ONLY_PAGE_ANON:
1100                         case self::AS_READ_ONLY_PAGE_LOGGED:
1101                                 throw new PermissionsError( 'edit' );
1102
1103                         case self::AS_READ_ONLY_PAGE:
1104                                 throw new ReadOnlyError;
1105
1106                         case self::AS_RATE_LIMITED:
1107                                 throw new ThrottledError();
1108
1109                         case self::AS_NO_CREATE_PERMISSION:
1110                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1111                                 throw new PermissionsError( $permission );
1112
1113                 }
1114                 return false;
1115         }
1116
1117         /**
1118          * Attempt submission (no UI)
1119          *
1120          * @param $result
1121          * @param $bot bool
1122          *
1123          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1124          *
1125          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1126          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1127          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1128          */
1129         function internalAttemptSave( &$result, $bot = false ) {
1130                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
1131                 global $wgMaxArticleSize;
1132
1133                 $status = Status::newGood();
1134
1135                 wfProfileIn( __METHOD__  );
1136                 wfProfileIn( __METHOD__ . '-checks' );
1137
1138                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1139                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1140                         $status->fatal( 'hookaborted' );
1141                         $status->value = self::AS_HOOK_ERROR;
1142                         wfProfileOut( __METHOD__ . '-checks' );
1143                         wfProfileOut( __METHOD__  );
1144                         return $status;
1145                 }
1146
1147                 # Check image redirect
1148                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1149                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
1150                         !$wgUser->isAllowed( 'upload' ) ) {
1151                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1152                                 $status->setResult( false, $code );
1153
1154                                 wfProfileOut( __METHOD__ . '-checks' );
1155                                 wfProfileOut( __METHOD__  );
1156
1157                                 return $status;
1158                 }
1159
1160                 # Check for spam
1161                 $match = self::matchSummarySpamRegex( $this->summary );
1162                 if ( $match === false ) {
1163                         $match = self::matchSpamRegex( $this->textbox1 );
1164                 }
1165                 if ( $match !== false ) {
1166                         $result['spam'] = $match;
1167                         $ip = $wgRequest->getIP();
1168                         $pdbk = $this->mTitle->getPrefixedDBkey();
1169                         $match = str_replace( "\n", '', $match );
1170                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1171                         $status->fatal( 'spamprotectionmatch', $match );
1172                         $status->value = self::AS_SPAM_ERROR;
1173                         wfProfileOut( __METHOD__ . '-checks' );
1174                         wfProfileOut( __METHOD__ );
1175                         return $status;
1176                 }
1177                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
1178                         # Error messages or other handling should be performed by the filter function
1179                         $status->setResult( false, self::AS_FILTERING );
1180                         wfProfileOut( __METHOD__ . '-checks' );
1181                         wfProfileOut( __METHOD__ );
1182                         return $status;
1183                 }
1184                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1185                         # Error messages etc. could be handled within the hook...
1186                         $status->fatal( 'hookaborted' );
1187                         $status->value = self::AS_HOOK_ERROR;
1188                         wfProfileOut( __METHOD__ . '-checks' );
1189                         wfProfileOut( __METHOD__ );
1190                         return $status;
1191                 } elseif ( $this->hookError != '' ) {
1192                         # ...or the hook could be expecting us to produce an error
1193                         $status->fatal( 'hookaborted' );
1194                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1195                         wfProfileOut( __METHOD__ . '-checks' );
1196                         wfProfileOut( __METHOD__ );
1197                         return $status;
1198                 }
1199
1200                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1201                         // Auto-block user's IP if the account was "hard" blocked
1202                         $wgUser->spreadAnyEditBlock();
1203                         # Check block state against master, thus 'false'.
1204                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1205                         wfProfileOut( __METHOD__ . '-checks' );
1206                         wfProfileOut( __METHOD__ );
1207                         return $status;
1208                 }
1209
1210                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1211                 if ( $this->kblength > $wgMaxArticleSize ) {
1212                         // Error will be displayed by showEditForm()
1213                         $this->tooBig = true;
1214                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1215                         wfProfileOut( __METHOD__ . '-checks' );
1216                         wfProfileOut( __METHOD__ );
1217                         return $status;
1218                 }
1219
1220                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1221                         if ( $wgUser->isAnon() ) {
1222                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1223                                 wfProfileOut( __METHOD__ . '-checks' );
1224                                 wfProfileOut( __METHOD__ );
1225                                 return $status;
1226                         } else {
1227                                 $status->fatal( 'readonlytext' );
1228                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1229                                 wfProfileOut( __METHOD__ . '-checks' );
1230                                 wfProfileOut( __METHOD__ );
1231                                 return $status;
1232                         }
1233                 }
1234
1235                 if ( wfReadOnly() ) {
1236                         $status->fatal( 'readonlytext' );
1237                         $status->value = self::AS_READ_ONLY_PAGE;
1238                         wfProfileOut( __METHOD__ . '-checks' );
1239                         wfProfileOut( __METHOD__ );
1240                         return $status;
1241                 }
1242                 if ( $wgUser->pingLimiter() ) {
1243                         $status->fatal( 'actionthrottledtext' );
1244                         $status->value = self::AS_RATE_LIMITED;
1245                         wfProfileOut( __METHOD__ . '-checks' );
1246                         wfProfileOut( __METHOD__ );
1247                         return $status;
1248                 }
1249
1250                 # If the article has been deleted while editing, don't save it without
1251                 # confirmation
1252                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1253                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1254                         wfProfileOut( __METHOD__ . '-checks' );
1255                         wfProfileOut( __METHOD__ );
1256                         return $status;
1257                 }
1258
1259                 wfProfileOut( __METHOD__ . '-checks' );
1260
1261                 # If article is new, insert it.
1262                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1263                 $new = ( $aid == 0 );
1264
1265                 if ( $new ) {
1266                         // Late check for create permission, just in case *PARANOIA*
1267                         if ( !$this->mTitle->userCan( 'create' ) ) {
1268                                 $status->fatal( 'nocreatetext' );
1269                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1270                                 wfDebug( __METHOD__ . ": no create permission\n" );
1271                                 wfProfileOut( __METHOD__ );
1272                                 return $status;
1273                         }
1274
1275                         # Don't save a new article if it's blank.
1276                         if ( $this->textbox1 == '' ) {
1277                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1278                                 wfProfileOut( __METHOD__ );
1279                                 return $status;
1280                         }
1281
1282                         // Run post-section-merge edit filter
1283                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1284                                 # Error messages etc. could be handled within the hook...
1285                                 $status->fatal( 'hookaborted' );
1286                                 $status->value = self::AS_HOOK_ERROR;
1287                                 wfProfileOut( __METHOD__ );
1288                                 return $status;
1289                         } elseif ( $this->hookError != '' ) {
1290                                 # ...or the hook could be expecting us to produce an error
1291                                 $status->fatal( 'hookaborted' );
1292                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1293                                 wfProfileOut( __METHOD__ );
1294                                 return $status;
1295                         }
1296
1297                         # Handle the user preference to force summaries here. Check if it's not a redirect.
1298                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
1299                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1300                                         $this->missingSummary = true;
1301                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1302                                         $status->value = self::AS_SUMMARY_NEEDED;
1303                                         wfProfileOut( __METHOD__ );
1304                                         return $status;
1305                                 }
1306                         }
1307
1308                         $content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
1309
1310                         $result['sectionanchor'] = '';
1311                         if ( $this->section == 'new' ) {
1312                 .........FIXME...............
1313                                 if ( $this->sectiontitle !== '' ) {
1314                                         // Insert the section title above the content.
1315                                         $T_E_X_T = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $T_E_X_T;
1316
1317                                         // Jump to the new section
1318                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1319
1320                                         // If no edit summary was specified, create one automatically from the section
1321                                         // title and have it link to the new section. Otherwise, respect the summary as
1322                                         // passed.
1323                                         if ( $this->summary === '' ) {
1324                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1325                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1326                                         }
1327                                 } elseif ( $this->summary !== '' ) {
1328                                         // Insert the section title above the content.
1329                                         $T_E_X_T = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $T_E_X_T;
1330
1331                                         // Jump to the new section
1332                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1333
1334                                         // Create a link to the new section from the edit summary.
1335                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1336                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1337                                 }
1338                         }
1339
1340                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1341
1342                 } else {
1343
1344                         # Article exists. Check for edit conflict.
1345
1346                         $this->mArticle->clear(); # Force reload of dates, etc.
1347                         $timestamp = $this->mArticle->getTimestamp();
1348
1349                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1350
1351                         if ( $timestamp != $this->edittime ) {
1352                                 $this->isConflict = true;
1353                                 if ( $this->section == 'new' ) {
1354                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1355                                                 $this->mArticle->getComment() == $this->summary ) {
1356                                                 // Probably a duplicate submission of a new comment.
1357                                                 // This can happen when squid resends a request after
1358                                                 // a timeout but the first one actually went through.
1359                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1360                                         } else {
1361                                                 // New comment; suppress conflict.
1362                                                 $this->isConflict = false;
1363                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1364                                         }
1365                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1366                                         # Suppress edit conflict with self, except for section edits where merging is required.
1367                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1368                                         $this->isConflict = false;
1369                                 }
1370                         }
1371
1372                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1373                         // backwards compatibility with old forms/bots).
1374                         if ( $this->sectiontitle !== '' ) {
1375                                 $sectionTitle = $this->sectiontitle;
1376                         } else {
1377                                 $sectionTitle = $this->summary;
1378                         }
1379
1380                         if ( $this->isConflict ) {
1381                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1382                 $T_E_X_T = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime ); #FIXME: use Content object throughout, make edit form aware of content model and serialization format
1383                         } else {
1384                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1385                 $T_E_X_T = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle ); #FIXME: use Content object throughout, make edit form aware of content model and serialization format
1386                         }
1387                         if ( is_null( $T_E_X_T ) ) {
1388                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1389                                 $this->isConflict = true;
1390                                 $T_E_X_T = $this->textbox1; // do not try to merge here! #FIXME: unserialize Content
1391                         } elseif ( $this->isConflict ) {
1392                                 # Attempt merge
1393                                 if ( $this->mergeChangesInto( $T_E_X_T ) ) { #FIXME: passe/receive Content object
1394                                         // Successful merge! Maybe we should tell the user the good news?
1395                                         $this->isConflict = false;
1396                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1397                                 } else {
1398                                         $this->section = '';
1399                                         $this->textbox1 = $T_E_X_T;
1400                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1401                                 }
1402                         }
1403
1404                         if ( $this->isConflict ) {
1405                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1406                                 wfProfileOut( __METHOD__ );
1407                                 return $status;
1408                         }
1409
1410                         // Run post-section-merge edit filter
1411                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $T_E_X_T, &$this->hookError, $this->summary ) ) ) {
1412                                 # Error messages etc. could be handled within the hook...
1413                                 $status->fatal( 'hookaborted' );
1414                                 $status->value = self::AS_HOOK_ERROR;
1415                                 wfProfileOut( __METHOD__ );
1416                                 return $status;
1417                         } elseif ( $this->hookError != '' ) {
1418                                 # ...or the hook could be expecting us to produce an error
1419                                 $status->fatal( 'hookaborted' );
1420                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1421                                 wfProfileOut( __METHOD__ );
1422                                 return $status;
1423                         }
1424
1425                         # Handle the user preference to force summaries here, but not for null edits
1426                         if ( $this->section != 'new' && !$this->allowBlankSummary
1427                                 && $this->getOriginalContent()... != $T_E_X_T
1428                                 && !Title::newFromRedirect( $T_E_X_T ) ) # check if it's not a redirect
1429                         {
1430                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1431                                         $this->missingSummary = true;
1432                                         $status->fatal( 'missingsummary' );
1433                                         $status->value = self::AS_SUMMARY_NEEDED;
1434                                         wfProfileOut( __METHOD__ );
1435                                         return $status;
1436                                 }
1437                         }
1438
1439                         # And a similar thing for new sections
1440                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1441                                 if ( trim( $this->summary ) == '' ) {
1442                                         $this->missingSummary = true;
1443                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1444                                         $status->value = self::AS_SUMMARY_NEEDED;
1445                                         wfProfileOut( __METHOD__ );
1446                                         return $status;
1447                                 }
1448                         }
1449
1450                         # All's well
1451                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1452                         $sectionanchor = '';
1453                         if ( $this->section == 'new' ) {
1454                                 if ( $this->textbox1 == '' ) {
1455                                         $this->missingComment = true;
1456                                         $status->fatal( 'missingcommenttext' );
1457                                         $status->value = self::AS_TEXTBOX_EMPTY;
1458                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1459                                         wfProfileOut( __METHOD__ );
1460                                         return $status;
1461                                 }
1462                                 if ( $this->sectiontitle !== '' ) {
1463                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1464                                         // If no edit summary was specified, create one automatically from the section
1465                                         // title and have it link to the new section. Otherwise, respect the summary as
1466                                         // passed.
1467                                         if ( $this->summary === '' ) {
1468                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1469                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1470                                         }
1471                                 } elseif ( $this->summary !== '' ) {
1472                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1473                                         # This is a new section, so create a link to the new section
1474                                         # in the revision summary.
1475                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1476                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1477                                 }
1478                         } elseif ( $this->section != '' ) {
1479                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1480                                 # XXX: might be better to integrate this into Article::replaceSection
1481                                 # for duplicate heading checking and maybe parsing
1482                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1483                                 # we can't deal with anchors, includes, html etc in the header for now,
1484                                 # headline would need to be parsed to improve this
1485                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1486                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1487                                 }
1488                         }
1489                         $result['sectionanchor'] = $sectionanchor;
1490                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1491
1492                         // Save errors may fall down to the edit form, but we've now
1493                         // merged the section into full text. Clear the section field
1494                         // so that later submission of conflict forms won't try to
1495                         // replace that into a duplicated mess.
1496                         $this->textbox1 = $T_E_X_T;
1497                         $this->section = '';
1498
1499                         $status->value = self::AS_SUCCESS_UPDATE;
1500                 }
1501
1502                 // Check for length errors again now that the section is merged in
1503                 $this->kblength = (int)( strlen( $T_E_X_T ) / 1024 );
1504                 if ( $this->kblength > $wgMaxArticleSize ) {
1505                         $this->tooBig = true;
1506                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1507                         wfProfileOut( __METHOD__ );
1508                         return $status;
1509                 }
1510
1511                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1512                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1513                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1514                         ( $bot ? EDIT_FORCE_BOT : 0 );
1515
1516                 $doEditStatus = $this->mArticle->doEdit( $T_E_X_T, $this->summary, $flags ); # FIXME: use WikiPage::doEditContent()
1517
1518                 if ( $doEditStatus->isOK() ) {
1519                         $result['redirect'] = Title::newFromRedirect( $T_E_X_T ) !== null;
1520                         $this->commitWatch();
1521                         wfProfileOut( __METHOD__ );
1522                         return $status;
1523                 } else {
1524                         $this->isConflict = true;
1525                         $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1526                         wfProfileOut( __METHOD__ );
1527                         return $doEditStatus;
1528                 }
1529         }
1530
1531         /**
1532          * Commit the change of watch status
1533          */
1534         protected function commitWatch() {
1535                 global $wgUser;
1536                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1537                         $dbw = wfGetDB( DB_MASTER );
1538                         $dbw->begin();
1539                         if ( $this->watchthis ) {
1540                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1541                         } else {
1542                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1543                         }
1544                         $dbw->commit();
1545                 }
1546         }
1547
1548         /**
1549          * Check if no edits were made by other users since
1550          * the time a user started editing the page. Limit to
1551          * 50 revisions for the sake of performance.
1552          *
1553          * @param $id int
1554          * @param $edittime string
1555          *
1556          * @return bool
1557          */
1558         protected function userWasLastToEdit( $id, $edittime ) {
1559                 if( !$id ) return false;
1560                 $dbw = wfGetDB( DB_MASTER );
1561                 $res = $dbw->select( 'revision',
1562                         'rev_user',
1563                         array(
1564                                 'rev_page' => $this->mTitle->getArticleId(),
1565                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1566                         ),
1567                         __METHOD__,
1568                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1569                 foreach ( $res as $row ) {
1570                         if( $row->rev_user != $id ) {
1571                                 return false;
1572                         }
1573                 }
1574                 return true;
1575         }
1576
1577         /**
1578          * @private
1579          * @todo document
1580          *
1581          * @parma $editText string
1582          *
1583          * @return bool
1584          */
1585         function mergeChangesInto( &$editText ){
1586                 wfProfileIn( __METHOD__ );
1587
1588                 $db = wfGetDB( DB_MASTER );
1589
1590                 // This is the revision the editor started from
1591                 $baseRevision = $this->getBaseRevision();
1592                 if ( is_null( $baseRevision ) ) {
1593                         wfProfileOut( __METHOD__ );
1594                         return false;
1595                 }
1596                 $baseContent = $baseRevision->getContent();
1597
1598                 // The current state, we want to merge updates into it
1599                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1600                 if ( is_null( $currentRevision ) ) {
1601                         wfProfileOut( __METHOD__ );
1602                         return false;
1603                 }
1604                 $currentContent = $currentRevision->getContent();
1605
1606         $handler = ContentHandler::getForModelName( $baseContent->getModelName() );
1607         $editContent = $handler->unserialize( $editText, $this->content_format ); #FIXME: supply serialization fomrat from edit form!
1608
1609                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
1610                 if ( $result ) {
1611                         $editText = ContentHandler::getContentText($result, $this->content_format );  #FIXME: supply serialization fomrat from edit form!
1612                         wfProfileOut( __METHOD__ );
1613                         return true;
1614                 } else {
1615                         wfProfileOut( __METHOD__ );
1616                         return false;
1617                 }
1618         }
1619
1620         /**
1621          * @return Revision
1622          */
1623         function getBaseRevision() {
1624                 if ( !$this->mBaseRevision ) {
1625                         $db = wfGetDB( DB_MASTER );
1626                         $baseRevision = Revision::loadFromTimestamp(
1627                                 $db, $this->mTitle, $this->edittime );
1628                         return $this->mBaseRevision = $baseRevision;
1629                 } else {
1630                         return $this->mBaseRevision;
1631                 }
1632         }
1633
1634         /**
1635          * Check given input text against $wgSpamRegex, and return the text of the first match.
1636          *
1637          * @param $text string
1638          *
1639          * @return string|false matching string or false
1640          */
1641         public static function matchSpamRegex( $text ) {
1642                 global $wgSpamRegex;
1643                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1644                 $regexes = (array)$wgSpamRegex;
1645                 return self::matchSpamRegexInternal( $text, $regexes );
1646         }
1647
1648         /**
1649          * Check given input text against $wgSpamRegex, and return the text of the first match.
1650          *
1651          * @parma $text string
1652          *
1653          * @return string|false  matching string or false
1654          */
1655         public static function matchSummarySpamRegex( $text ) {
1656                 global $wgSummarySpamRegex;
1657                 $regexes = (array)$wgSummarySpamRegex;
1658                 return self::matchSpamRegexInternal( $text, $regexes );
1659         }
1660
1661         /**
1662          * @param $text string
1663          * @param $regexes array
1664          * @return bool|string
1665          */
1666         protected static function matchSpamRegexInternal( $text, $regexes ) {
1667                 foreach( $regexes as $regex ) {
1668                         $matches = array();
1669                         if( preg_match( $regex, $text, $matches ) ) {
1670                                 return $matches[0];
1671                         }
1672                 }
1673                 return false;
1674         }
1675
1676         function setHeaders() {
1677                 global $wgOut, $wgUser;
1678
1679                 $wgOut->addModules( 'mediawiki.action.edit' );
1680
1681                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1682                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1683                 }
1684                 // Bug #19334: textarea jumps when editing articles in IE8
1685                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1686
1687                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1688
1689                 # Enabled article-related sidebar, toplinks, etc.
1690                 $wgOut->setArticleRelated( true );
1691
1692                 if ( $this->isConflict ) {
1693                         $wgOut->setPageTitle( wfMessage( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1694                 } elseif ( $this->section != '' ) {
1695                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1696                         $wgOut->setPageTitle( wfMessage( $msg, $this->getContextTitle()->getPrefixedText() ) );
1697                 } else {
1698                         # Use the title defined by DISPLAYTITLE magic word when present
1699                         if ( isset( $this->mParserOutput )
1700                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1701                                 $title = $dt;
1702                         } else {
1703                                 $title = $this->getContextTitle()->getPrefixedText();
1704                         }
1705                         $wgOut->setPageTitle( wfMessage( 'editing', $title ) );
1706                 }
1707         }
1708
1709         /**
1710          * Show all applicable editing introductions
1711          */
1712         protected function showIntro() {
1713                 global $wgOut, $wgUser;
1714                 if ( $this->suppressIntro ) {
1715                         return;
1716                 }
1717
1718                 $namespace = $this->mTitle->getNamespace();
1719
1720                 if ( $namespace == NS_MEDIAWIKI ) {
1721                         # Show a warning if editing an interface message
1722                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1723                 }
1724
1725                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1726                 # Show log extract when the user is currently blocked
1727                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1728                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1729                         $username = $parts[0];
1730                         $user = User::newFromName( $username, false /* allow IP users*/ );
1731                         $ip = User::isIP( $username );
1732                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1733                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1734                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1735                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1736                                 LogEventsList::showLogExtract(
1737                                         $wgOut,
1738                                         'block',
1739                                         $user->getUserPage(),
1740                                         '',
1741                                         array(
1742                                                 'lim' => 1,
1743                                                 'showIfEmpty' => false,
1744                                                 'msgKey' => array(
1745                                                         'blocked-notice-logextract',
1746                                                         $user->getName() # Support GENDER in notice
1747                                                 )
1748                                         )
1749                                 );
1750                         }
1751                 }
1752                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1753                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1754                         if ( $wgUser->isLoggedIn() ) {
1755                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1756                         } else {
1757                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1758                         }
1759                 }
1760                 # Give a notice if the user is editing a deleted/moved page...
1761                 if ( !$this->mTitle->exists() ) {
1762                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1763                                 '', array( 'lim' => 10,
1764                                            'conds' => array( "log_action != 'revision'" ),
1765                                            'showIfEmpty' => false,
1766                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
1767                         );
1768                 }
1769         }
1770
1771         /**
1772          * Attempt to show a custom editing introduction, if supplied
1773          *
1774          * @return bool
1775          */
1776         protected function showCustomIntro() {
1777                 if ( $this->editintro ) {
1778                         $title = Title::newFromText( $this->editintro );
1779                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1780                                 global $wgOut;
1781                                 // Added using template syntax, to take <noinclude>'s into account.
1782                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1783                                 return true;
1784                         } else {
1785                                 return false;
1786                         }
1787                 } else {
1788                         return false;
1789                 }
1790         }
1791
1792         /**
1793          * Send the edit form and related headers to $wgOut
1794          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1795          *     during form output near the top, for captchas and the like.
1796          */
1797         function showEditForm( $formCallback = null ) {
1798                 global $wgOut, $wgUser;
1799
1800                 wfProfileIn( __METHOD__ );
1801
1802                 #need to parse the preview early so that we know which templates are used,
1803                 #otherwise users with "show preview after edit box" will get a blank list
1804                 #we parse this near the beginning so that setHeaders can do the title
1805                 #setting work instead of leaving it in getPreviewText
1806                 $previewOutput = '';
1807                 if ( $this->formtype == 'preview' ) {
1808                         $previewOutput = $this->getPreviewText();
1809                 }
1810
1811                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1812
1813                 $this->setHeaders();
1814
1815                 if ( $this->showHeader() === false ) {
1816                         wfProfileOut( __METHOD__ );
1817                         return;
1818                 }
1819
1820                 $wgOut->addHTML( $this->editFormPageTop );
1821
1822                 if ( $wgUser->getOption( 'previewontop' ) ) {
1823                         $this->displayPreviewArea( $previewOutput, true );
1824                 }
1825
1826                 $wgOut->addHTML( $this->editFormTextTop );
1827
1828                 $showToolbar = true;
1829                 if ( $this->wasDeletedSinceLastEdit() ) {
1830                         if ( $this->formtype == 'save' ) {
1831                                 // Hide the toolbar and edit area, user can click preview to get it back
1832                                 // Add an confirmation checkbox and explanation.
1833                                 $showToolbar = false;
1834                         } else {
1835                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1836                                         'deletedwhileediting' );
1837                         }
1838                 }
1839
1840                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => 'editform', 'name' => 'editform',
1841                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1842                         'enctype' => 'multipart/form-data' ) ) );
1843
1844                 if ( is_callable( $formCallback ) ) {
1845                         call_user_func_array( $formCallback, array( &$wgOut ) );
1846                 }
1847
1848                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1849
1850                 // Put these up at the top to ensure they aren't lost on early form submission
1851                 $this->showFormBeforeText();
1852
1853                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1854                         $username = $this->lastDelete->user_name;
1855                         $comment = $this->lastDelete->log_comment;
1856
1857                         // It is better to not parse the comment at all than to have templates expanded in the middle
1858                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1859                         $key = $comment === ''
1860                                 ? 'confirmrecreate-noreason'
1861                                 : 'confirmrecreate';
1862                         $wgOut->addHTML(
1863                                 '<div class="mw-confirm-recreate">' .
1864                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1865                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1866                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1867                                 ) .
1868                                 '</div>'
1869                         );
1870                 }
1871
1872                 # If a blank edit summary was previously provided, and the appropriate
1873                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1874                 # user being bounced back more than once in the event that a summary
1875                 # is not required.
1876                 #####
1877                 # For a bit more sophisticated detection of blank summaries, hash the
1878                 # automatic one and pass that in the hidden field wpAutoSummary.
1879                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
1880                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1881                 }
1882
1883                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1884                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1885
1886                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1887
1888                 if ( $this->section == 'new' ) {
1889                         $this->showSummaryInput( true, $this->summary );
1890                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1891                 }
1892
1893                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1894
1895                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
1896                         $wgOut->addHTML( EditPage::getEditToolbar() );
1897                 }
1898
1899                 if ( $this->isConflict ) {
1900                         // In an edit conflict bypass the overrideable content form method
1901                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1902                         // resolved between page source edits and custom ui edits using the
1903                         // custom edit ui.
1904                         $this->textbox2 = $this->textbox1;
1905
1906             $content = $this->getCurrentContent();
1907                         $this->textbox1 = $content->serialize( $this->content_format );
1908
1909                         $this->showTextbox1();
1910                 } else {
1911                         $this->showContentForm();
1912                 }
1913
1914                 $wgOut->addHTML( $this->editFormTextAfterContent );
1915
1916                 $wgOut->addWikiText( $this->getCopywarn() );
1917
1918                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1919
1920                 $this->showStandardInputs();
1921
1922                 $this->showFormAfterText();
1923
1924                 $this->showTosSummary();
1925
1926                 $this->showEditTools();
1927
1928                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
1929
1930                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
1931                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
1932
1933                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
1934                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
1935
1936                 if ( $this->isConflict ) {
1937                         $this->showConflict();
1938                 }
1939
1940                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
1941
1942                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1943                         $this->displayPreviewArea( $previewOutput, false );
1944                 }
1945
1946                 wfProfileOut( __METHOD__ );
1947         }
1948
1949         /**
1950          * Extract the section title from current section text, if any.
1951          *
1952          * @param string $text
1953          * @return Mixed|string or false
1954          */
1955         public static function extractSectionTitle( $text ) {
1956                 preg_match( "/^(=+)(.+)\\1(\n|$)/i", $text, $matches );
1957                 if ( !empty( $matches[2] ) ) {
1958                         global $wgParser;
1959                         return $wgParser->stripSectionName(trim($matches[2]));
1960                 } else {
1961                         return false;
1962                 }
1963         }
1964
1965         protected function showHeader() {
1966                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1967
1968                 if ( $this->mTitle->isTalkPage() ) {
1969                         $wgOut->addWikiMsg( 'talkpagetext' );
1970                 }
1971
1972                 # Optional notices on a per-namespace and per-page basis
1973                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
1974                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
1975                 if ( $editnotice_ns_message->exists() ) {
1976                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
1977                 }
1978                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1979                         $parts = explode( '/', $this->mTitle->getDBkey() );
1980                         $editnotice_base = $editnotice_ns;
1981                         while ( count( $parts ) > 0 ) {
1982                                 $editnotice_base .= '-'.array_shift( $parts );
1983                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
1984                                 if ( $editnotice_base_msg->exists() ) {
1985                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
1986                                 }
1987                         }
1988                 } else {
1989                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
1990                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
1991                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
1992                         if ( $editnoticeMsg->exists() ) {
1993                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
1994                         }
1995                 }
1996
1997                 if ( $this->isConflict ) {
1998                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1999                         $this->edittime = $this->mArticle->getTimestamp();
2000                 } else {
2001                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
2002                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
2003                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
2004                                 // Someone is welcome to try refactoring though
2005                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2006                                 return false;
2007                         }
2008
2009                         if ( $this->section != '' && $this->section != 'new' ) {
2010                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2011                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
2012                                         if ( $sectionTitle !== false ) {
2013                                                 $this->summary = "/* $sectionTitle */ ";
2014                                         }
2015                                 }
2016                         }
2017
2018                         if ( $this->missingComment ) {
2019                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2020                         }
2021
2022                         if ( $this->missingSummary && $this->section != 'new' ) {
2023                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
2024                         }
2025
2026                         if ( $this->missingSummary && $this->section == 'new' ) {
2027                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
2028                         }
2029
2030                         if ( $this->hookError !== '' ) {
2031                                 $wgOut->addWikiText( $this->hookError );
2032                         }
2033
2034                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2035                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
2036                         }
2037
2038                         if ( $this->section != 'new' ) {
2039                                 $revision = $this->mArticle->getRevisionFetched();
2040                                 if ( $revision ) {
2041                                         // Let sysop know that this will make private content public if saved
2042
2043                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
2044                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
2045                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2046                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
2047                                         }
2048
2049                                         if ( !$revision->isCurrent() ) {
2050                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
2051                                                 $wgOut->addWikiMsg( 'editingold' );
2052                                         }
2053                                 } elseif ( $this->mTitle->exists() ) {
2054                                         // Something went wrong
2055
2056                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2057                                                 array( 'missing-article', $this->mTitle->getPrefixedText(),
2058                                                 wfMsgNoTrans( 'missingarticle-rev', $this->oldid ) ) );
2059                                 }
2060                         }
2061                 }
2062
2063                 if ( wfReadOnly() ) {
2064                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
2065                 } elseif ( $wgUser->isAnon() ) {
2066                         if ( $this->formtype != 'preview' ) {
2067                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
2068                         } else {
2069                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
2070                         }
2071                 } else {
2072                         if ( $this->isCssJsSubpage ) {
2073                                 # Check the skin exists
2074                                 if ( $this->isWrongCaseCssJsPage ) {
2075                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
2076                                 }
2077                                 if ( $this->formtype !== 'preview' ) {
2078                                         if ( $this->isCssSubpage )
2079                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
2080                                         if ( $this->isJsSubpage )
2081                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
2082                                 }
2083                         }
2084                 }
2085
2086                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2087                         # Is the title semi-protected?
2088                         if ( $this->mTitle->isSemiProtected() ) {
2089                                 $noticeMsg = 'semiprotectedpagewarning';
2090                         } else {
2091                                 # Then it must be protected based on static groups (regular)
2092                                 $noticeMsg = 'protectedpagewarning';
2093                         }
2094                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2095                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2096                 }
2097                 if ( $this->mTitle->isCascadeProtected() ) {
2098                         # Is this page under cascading protection from some source pages?
2099                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
2100                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2101                         $cascadeSourcesCount = count( $cascadeSources );
2102                         if ( $cascadeSourcesCount > 0 ) {
2103                                 # Explain, and list the titles responsible
2104                                 foreach( $cascadeSources as $page ) {
2105                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2106                                 }
2107                         }
2108                         $notice .= '</div>';
2109                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2110                 }
2111                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2112                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2113                                 array(  'lim' => 1,
2114                                         'showIfEmpty' => false,
2115                                         'msgKey' => array( 'titleprotectedwarning' ),
2116                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2117                 }
2118
2119                 if ( $this->kblength === false ) {
2120                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2121                 }
2122
2123                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2124                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2125                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
2126                 } else {
2127                         if( !wfMessage('longpage-hint')->isDisabled() ) {
2128                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2129                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2130                                 );
2131                         }
2132                 }
2133         }
2134
2135         /**
2136          * Standard summary input and label (wgSummary), abstracted so EditPage
2137          * subclasses may reorganize the form.
2138          * Note that you do not need to worry about the label's for=, it will be
2139          * inferred by the id given to the input. You can remove them both by
2140          * passing array( 'id' => false ) to $userInputAttrs.
2141          *
2142          * @param $summary string The value of the summary input
2143          * @param $labelText string The html to place inside the label
2144          * @param $inputAttrs array of attrs to use on the input
2145          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2146          *
2147          * @return array An array in the format array( $label, $input )
2148          */
2149         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
2150                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
2151                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
2152                         'id' => 'wpSummary',
2153                         'maxlength' => '200',
2154                         'tabindex' => '1',
2155                         'size' => 60,
2156                         'spellcheck' => 'true',
2157                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2158
2159                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
2160                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2161                         'id' => "wpSummaryLabel"
2162                 );
2163
2164                 $label = null;
2165                 if ( $labelText ) {
2166                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2167                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2168                 }
2169
2170                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2171
2172                 return array( $label, $input );
2173         }
2174
2175         /**
2176          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2177          *                          up top, or false if this is the comment summary
2178          *                          down below the textarea
2179          * @param $summary String: The text of the summary to display
2180          * @return String
2181          */
2182         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2183                 global $wgOut, $wgContLang;
2184                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2185                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2186                 if ( $isSubjectPreview ) {
2187                         if ( $this->nosummary ) {
2188                                 return;
2189                         }
2190                 } else {
2191                         if ( !$this->mShowSummaryField ) {
2192                                 return;
2193                         }
2194                 }
2195                 $summary = $wgContLang->recodeForEdit( $summary );
2196                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2197                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
2198                 $wgOut->addHTML("{$label} {$input}");
2199         }
2200
2201         /**
2202          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2203          *                          up top, or false if this is the comment summary
2204          *                          down below the textarea
2205          * @param $summary String: the text of the summary to display
2206          * @return String
2207          */
2208         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2209                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2210                         return "";
2211
2212                 global $wgParser;
2213
2214                 if ( $isSubjectPreview )
2215                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2216
2217                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2218
2219                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2220                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2221         }
2222
2223         protected function showFormBeforeText() {
2224                 global $wgOut;
2225                 $section = htmlspecialchars( $this->section );
2226                 $wgOut->addHTML( <<<HTML
2227 <input type='hidden' value="{$section}" name="wpSection" />
2228 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2229 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2230 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2231
2232 HTML
2233                 );
2234                 if ( !$this->checkUnicodeCompliantBrowser() )
2235                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
2236         }
2237
2238         protected function showFormAfterText() {
2239                 global $wgOut, $wgUser;
2240                 /**
2241                  * To make it harder for someone to slip a user a page
2242                  * which submits an edit form to the wiki without their
2243                  * knowledge, a random token is associated with the login
2244                  * session. If it's not passed back with the submission,
2245                  * we won't save the page, or render user JavaScript and
2246                  * CSS previews.
2247                  *
2248                  * For anon editors, who may not have a session, we just
2249                  * include the constant suffix to prevent editing from
2250                  * broken text-mangling proxies.
2251                  */
2252                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2253         }
2254
2255         /**
2256          * Subpage overridable method for printing the form for page content editing
2257          * By default this simply outputs wpTextbox1
2258          * Subclasses can override this to provide a custom UI for editing;
2259          * be it a form, or simply wpTextbox1 with a modified content that will be
2260          * reverse modified when extracted from the post data.
2261          * Note that this is basically the inverse for importContentFormData
2262          */
2263         protected function showContentForm() {
2264                 $this->showTextbox1();
2265         }
2266
2267         /**
2268          * Method to output wpTextbox1
2269          * The $textoverride method can be used by subclasses overriding showContentForm
2270          * to pass back to this method.
2271          *
2272          * @param $customAttribs An array of html attributes to use in the textarea
2273          * @param $textoverride String: optional text to override $this->textarea1 with
2274          */
2275         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2276                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2277                         $attribs = array( 'style' => 'display:none;' );
2278                 } else {
2279                         $classes = array(); // Textarea CSS
2280                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2281                                 # Is the title semi-protected?
2282                                 if ( $this->mTitle->isSemiProtected() ) {
2283                                         $classes[] = 'mw-textarea-sprotected';
2284                                 } else {
2285                                         # Then it must be protected based on static groups (regular)
2286                                         $classes[] = 'mw-textarea-protected';
2287                                 }
2288                                 # Is the title cascade-protected?
2289                                 if ( $this->mTitle->isCascadeProtected() ) {
2290                                         $classes[] = 'mw-textarea-cprotected';
2291                                 }
2292                         }
2293
2294                         $attribs = array( 'tabindex' => 1 );
2295
2296                         if ( is_array( $customAttribs ) ) {
2297                                 $attribs += $customAttribs;
2298                         }
2299
2300                         if ( count( $classes ) ) {
2301                                 if ( isset( $attribs['class'] ) ) {
2302                                         $classes[] = $attribs['class'];
2303                                 }
2304                                 $attribs['class'] = implode( ' ', $classes );
2305                         }
2306                 }
2307
2308                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2309         }
2310
2311         protected function showTextbox2() {
2312                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2313         }
2314
2315         protected function showTextbox( $text, $name, $customAttribs = array() ) {
2316                 global $wgOut, $wgUser;
2317
2318                 $wikitext = $this->safeUnicodeOutput( $text );
2319                 if ( strval($wikitext) !== '' ) {
2320                         // Ensure there's a newline at the end, otherwise adding lines
2321                         // is awkward.
2322                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2323                         // mode will show an extra newline. A bit annoying.
2324                         $wikitext .= "\n";
2325                 }
2326
2327                 $attribs = $customAttribs + array(
2328                         'accesskey' => ',',
2329                         'id'   => $name,
2330                         'cols' => $wgUser->getIntOption( 'cols' ),
2331                         'rows' => $wgUser->getIntOption( 'rows' ),
2332                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2333                 );
2334
2335                 $pageLang = $this->mTitle->getPageLanguage();
2336                 $attribs['lang'] = $pageLang->getCode();
2337                 $attribs['dir'] = $pageLang->getDir();
2338
2339                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2340         }
2341
2342         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2343                 global $wgOut;
2344                 $classes = array();
2345                 if ( $isOnTop )
2346                         $classes[] = 'ontop';
2347
2348                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2349
2350                 if ( $this->formtype != 'preview' )
2351                         $attribs['style'] = 'display: none;';
2352
2353                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2354
2355                 if ( $this->formtype == 'preview' ) {
2356                         $this->showPreview( $previewOutput );
2357                 }
2358
2359                 $wgOut->addHTML( '</div>' );
2360
2361                 if ( $this->formtype == 'diff') {
2362                         $this->showDiff();
2363                 }
2364         }
2365
2366         /**
2367          * Append preview output to $wgOut.
2368          * Includes category rendering if this is a category page.
2369          *
2370          * @param $text String: the HTML to be output for the preview.
2371          */
2372         protected function showPreview( $text ) {
2373                 global $wgOut;
2374                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
2375                         $this->mArticle->openShowCategory();
2376                 }
2377                 # This hook seems slightly odd here, but makes things more
2378                 # consistent for extensions.
2379                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
2380                 $wgOut->addHTML( $text );
2381                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2382                         $this->mArticle->closeShowCategory();
2383                 }
2384         }
2385
2386         /**
2387          * Get a diff between the current contents of the edit box and the
2388          * version of the page we're editing from.
2389          *
2390          * If this is a section edit, we'll replace the section as for final
2391          * save and then make a comparison.
2392          */
2393         function showDiff() {
2394                 global $wgUser, $wgContLang, $wgOut;
2395
2396                 $oldContent = $this->getOriginalContent();
2397
2398         $textboxContent = ContentHandler::makeContent( $this->textbox1, $this->getTitle(),
2399                                                         $this->content_model, $this->content_format );
2400
2401                 $newContent = $this->mArticle->replaceSectionContent(
2402                                                         $this->section, $textboxContent,
2403                                             $this->summary, $this->edittime );
2404
2405         # hanlde legacy text-based hook
2406         $newtext_orig = $newContent->serialize( $this->content_format );
2407         $newtext = $newtext_orig; #clone
2408                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2409
2410         if ( $newtext != $newtext_orig ) {
2411             #if the hook changed the text, create a new Content object accordingly.
2412             $newContent = ContentHandler::makeContent( $newtext, $this->getTitle(), $newContent->getModelName() );
2413         }
2414
2415                 wfRunHooks( 'EditPageGetDiffContent', array( $this, &$newContent ) ); #FIXME: document new hook
2416
2417                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2418                 $newContent = $newContent->preSaveTransform( $this->mTitle, $wgUser, $popts );
2419
2420                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
2421                         $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2422                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2423
2424                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2425                         $de->setText( $oldContent, $newContent ); #FIXME: content-based diff!
2426                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2427                         $de->showDiffStyle();
2428                 } else {
2429                         $difftext = '';
2430                 }
2431
2432                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2433         }
2434
2435         /**
2436          * Give a chance for site and per-namespace customizations of
2437          * terms of service summary link that might exist separately
2438          * from the copyright notice.
2439          *
2440          * This will display between the save button and the edit tools,
2441          * so should remain short!
2442          */
2443         protected function showTosSummary() {
2444                 $msg = 'editpage-tos-summary';
2445                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2446                 if( !wfMessage( $msg )->isDisabled() ) {
2447                         global $wgOut;
2448                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2449                         $wgOut->addWikiMsg( $msg );
2450                         $wgOut->addHTML( '</div>' );
2451                 }
2452         }
2453
2454         protected function showEditTools() {
2455                 global $wgOut;
2456                 $wgOut->addHTML( '<div class="mw-editTools">' .
2457                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2458                         '</div>' );
2459         }
2460
2461         protected function getCopywarn() {
2462                 global $wgRightsText;
2463                 if ( $wgRightsText ) {
2464                         $copywarnMsg = array( 'copyrightwarning',
2465                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2466                                 $wgRightsText );
2467                 } else {
2468                         $copywarnMsg = array( 'copyrightwarning2',
2469                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2470                 }
2471                 // Allow for site and per-namespace customization of contribution/copyright notice.
2472                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2473
2474                 return "<div id=\"editpage-copywarn\">\n" .
2475                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
2476         }
2477
2478         protected function showStandardInputs( &$tabindex = 2 ) {
2479                 global $wgOut;
2480                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2481
2482                 if ( $this->section != 'new' ) {
2483                         $this->showSummaryInput( false, $this->summary );
2484                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2485                 }
2486
2487                 $checkboxes = $this->getCheckboxes( $tabindex,
2488                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2489                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2490                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2491                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2492
2493                 $cancel = $this->getCancelLink();
2494                 if ( $cancel !== '' ) {
2495                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2496                 }
2497                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2498                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
2499                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
2500                         htmlspecialchars( wfMsg( 'newwindow' ) );
2501                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2502                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2503         }
2504
2505         /**
2506          * Show an edit conflict. textbox1 is already shown in showEditForm().
2507          * If you want to use another entry point to this function, be careful.
2508          */
2509         protected function showConflict() {
2510                 global $wgOut;
2511
2512                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2513                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2514
2515                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2516                         $de->setText( $this->textbox2, $this->textbox1 );
2517                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2518
2519                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2520                         $this->showTextbox2();
2521                 }
2522         }
2523
2524         /**
2525          * @return string
2526          */
2527         public function getCancelLink() {
2528                 $cancelParams = array();
2529                 if ( !$this->isConflict && $this->oldid > 0 ) {
2530                         $cancelParams['oldid'] = $this->oldid;
2531                 }
2532
2533                 return Linker::linkKnown(
2534                         $this->getContextTitle(),
2535                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2536                         array( 'id' => 'mw-editform-cancel' ),
2537                         $cancelParams
2538                 );
2539         }
2540
2541         /**
2542          * Returns the URL to use in the form's action attribute.
2543          * This is used by EditPage subclasses when simply customizing the action
2544          * variable in the constructor is not enough. This can be used when the
2545          * EditPage lives inside of a Special page rather than a custom page action.
2546          *
2547          * @param $title Title object for which is being edited (where we go to for &action= links)
2548          * @return string
2549          */
2550         protected function getActionURL( Title $title ) {
2551                 return $title->getLocalURL( array( 'action' => $this->action ) );
2552         }
2553
2554         /**
2555          * Check if a page was deleted while the user was editing it, before submit.
2556          * Note that we rely on the logging table, which hasn't been always there,
2557          * but that doesn't matter, because this only applies to brand new
2558          * deletes.
2559          */
2560         protected function wasDeletedSinceLastEdit() {
2561                 if ( $this->deletedSinceEdit !== null ) {
2562                         return $this->deletedSinceEdit;
2563                 }
2564
2565                 $this->deletedSinceEdit = false;
2566
2567                 if ( $this->mTitle->isDeletedQuick() ) {
2568                         $this->lastDelete = $this->getLastDelete();
2569                         if ( $this->lastDelete ) {
2570                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2571                                 if ( $deleteTime > $this->starttime ) {
2572                                         $this->deletedSinceEdit = true;
2573                                 }
2574                         }
2575                 }
2576
2577                 return $this->deletedSinceEdit;
2578         }
2579
2580         protected function getLastDelete() {
2581                 $dbr = wfGetDB( DB_SLAVE );
2582                 $data = $dbr->selectRow(
2583                         array( 'logging', 'user' ),
2584                         array( 'log_type',
2585                                    'log_action',
2586                                    'log_timestamp',
2587                                    'log_user',
2588                                    'log_namespace',
2589                                    'log_title',
2590                                    'log_comment',
2591                                    'log_params',
2592                                    'log_deleted',
2593                                    'user_name' ),
2594                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2595                                    'log_title' => $this->mTitle->getDBkey(),
2596                                    'log_type' => 'delete',
2597                                    'log_action' => 'delete',
2598                                    'user_id=log_user' ),
2599                         __METHOD__,
2600                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2601                 );
2602                 // Quick paranoid permission checks...
2603                 if( is_object( $data ) ) {
2604                         if( $data->log_deleted & LogPage::DELETED_USER )
2605                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2606                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
2607                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2608                 }
2609                 return $data;
2610         }
2611
2612         /**
2613          * Get the rendered text for previewing.
2614          * @return string
2615          */
2616         function getPreviewText() {
2617                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2618
2619                 wfProfileIn( __METHOD__ );
2620
2621                 if ( $wgRawHtml && !$this->mTokenOk ) {
2622                         // Could be an offsite preview attempt. This is very unsafe if
2623                         // HTML is enabled, as it could be an attack.
2624                         $parsedNote = '';
2625                         if ( $this->textbox1 !== '' ) {
2626                                 // Do not put big scary notice, if previewing the empty
2627                                 // string, which happens when you initially edit
2628                                 // a category page, due to automatic preview-on-open.
2629                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2630                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2631                         }
2632                         wfProfileOut( __METHOD__ );
2633                         return $parsedNote;
2634                 }
2635
2636                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2637                         if ( $this->mTokenOkExceptSuffix ) {
2638                                 $note = wfMsg( 'token_suffix_mismatch' );
2639                         } else {
2640                                 $note = wfMsg( 'session_fail_preview' );
2641                         }
2642                 } elseif ( $this->incompleteForm ) {
2643                         $note = wfMsg( 'edit_form_incomplete' );
2644                 } else {
2645                         $note = wfMsg( 'previewnote' );
2646                 }
2647
2648                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2649                 $parserOptions->setEditSection( false );
2650                 $parserOptions->setTidy( true );
2651                 $parserOptions->setIsPreview( true );
2652                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2653
2654                 # don't parse non-wikitext pages, show message about preview
2655                 # 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?
2656
2657         #FIXME: get appropriate content handler!
2658                 if ( $this->isCssJsSubpage || !$this->mTitle->isWikitextPage() ) {
2659                         if( $this->mTitle->isCssJsSubpage() ) {
2660                                 $level = 'user';
2661                         } elseif( $this->mTitle->isCssOrJsPage() ) {
2662                                 $level = 'site';
2663                         } else {
2664                                 $level = false;
2665                         }
2666
2667                         # Used messages to make sure grep find them:
2668                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2669                         if( $level ) {
2670                             #FIXME: move this crud into ContentHandler class!
2671                                 if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2672                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2673                                         $class = "mw-code mw-css";
2674                                 } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2675                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2676                                         $class = "mw-code mw-js";
2677                                 } else {
2678                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2679                                 }
2680                         }
2681
2682                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2683                         $previewHTML = $parserOutput->mText;
2684                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2685                 } else {
2686                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2687                         if ( $rt ) {
2688                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2689                         } else {
2690                                 $toparse = $this->textbox1;
2691
2692                                 # If we're adding a comment, we need to show the
2693                                 # summary as the headline
2694                                 if ( $this->section == "new" && $this->summary != "" ) {
2695                                         $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2696                                 }
2697
2698                                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2699
2700                                 $parserOptions->enableLimitReport();
2701
2702                                 $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2703                                 $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2704
2705                                 $previewHTML = $parserOutput->getText();
2706                                 $this->mParserOutput = $parserOutput;
2707                                 $wgOut->addParserOutputNoText( $parserOutput );
2708
2709                                 if ( count( $parserOutput->getWarnings() ) ) {
2710                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2711                                 }
2712                         }
2713                 }
2714
2715                 if( $this->isConflict ) {
2716                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2717                 } else {
2718                         $conflict = '<hr />';
2719                 }
2720
2721                 $previewhead = "<div class='previewnote'>\n" .
2722                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2723                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2724
2725                 $pageLang = $this->mTitle->getPageLanguage();
2726                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2727                         'class' => 'mw-content-'.$pageLang->getDir() );
2728                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2729
2730                 wfProfileOut( __METHOD__ );
2731                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2732         }
2733
2734         /**
2735          * @return Array
2736          */
2737         function getTemplates() {
2738                 if ( $this->preview || $this->section != '' ) {
2739                         $templates = array();
2740                         if ( !isset( $this->mParserOutput ) ) {
2741                                 return $templates;
2742                         }
2743                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2744                                 foreach( array_keys( $template ) as $dbk ) {
2745                                         $templates[] = Title::makeTitle($ns, $dbk);
2746                                 }
2747                         }
2748                         return $templates;
2749                 } else {
2750                         return $this->mTitle->getTemplateLinksFrom();
2751                 }
2752         }
2753
2754         /**
2755          * Shows a bulletin board style toolbar for common editing functions.
2756          * It can be disabled in the user preferences.
2757          * The necessary JavaScript code can be found in skins/common/edit.js.
2758          *
2759          * @return string
2760          */
2761         static function getEditToolbar() {
2762                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2763                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2764
2765                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2766
2767                 /**
2768                  * $toolarray is an array of arrays each of which includes the
2769                  * filename of the button image (without path), the opening
2770                  * tag, the closing tag, optionally a sample text that is
2771                  * inserted between the two when no selection is highlighted
2772                  * and.  The tip text is shown when the user moves the mouse
2773                  * over the button.
2774                  *
2775                  * Also here: accesskeys (key), which are not used yet until
2776                  * someone can figure out a way to make them work in
2777                  * IE. However, we should make sure these keys are not defined
2778                  * on the edit page.
2779                  */
2780                 $toolarray = array(
2781                         array(
2782                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2783                                 'id'     => 'mw-editbutton-bold',
2784                                 'open'   => '\'\'\'',
2785                                 'close'  => '\'\'\'',
2786                                 'sample' => wfMsg( 'bold_sample' ),
2787                                 'tip'    => wfMsg( 'bold_tip' ),
2788                                 'key'    => 'B'
2789                         ),
2790                         array(
2791                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2792                                 'id'     => 'mw-editbutton-italic',
2793                                 'open'   => '\'\'',
2794                                 'close'  => '\'\'',
2795                                 'sample' => wfMsg( 'italic_sample' ),
2796                                 'tip'    => wfMsg( 'italic_tip' ),
2797                                 'key'    => 'I'
2798                         ),
2799                         array(
2800                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2801                                 'id'     => 'mw-editbutton-link',
2802                                 'open'   => '[[',
2803                                 'close'  => ']]',
2804                                 'sample' => wfMsg( 'link_sample' ),
2805                                 'tip'    => wfMsg( 'link_tip' ),
2806                                 'key'    => 'L'
2807                         ),
2808                         array(
2809                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2810                                 'id'     => 'mw-editbutton-extlink',
2811                                 'open'   => '[',
2812                                 'close'  => ']',
2813                                 'sample' => wfMsg( 'extlink_sample' ),
2814                                 'tip'    => wfMsg( 'extlink_tip' ),
2815                                 'key'    => 'X'
2816                         ),
2817                         array(
2818                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2819                                 'id'     => 'mw-editbutton-headline',
2820                                 'open'   => "\n== ",
2821                                 'close'  => " ==\n",
2822                                 'sample' => wfMsg( 'headline_sample' ),
2823                                 'tip'    => wfMsg( 'headline_tip' ),
2824                                 'key'    => 'H'
2825                         ),
2826                         $imagesAvailable ? array(
2827                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2828                                 'id'     => 'mw-editbutton-image',
2829                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2830                                 'close'  => ']]',
2831                                 'sample' => wfMsg( 'image_sample' ),
2832                                 'tip'    => wfMsg( 'image_tip' ),
2833                                 'key'    => 'D',
2834                         ) : false,
2835                         $imagesAvailable ? array(
2836                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2837                                 'id'     => 'mw-editbutton-media',
2838                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2839                                 'close'  => ']]',
2840                                 'sample' => wfMsg( 'media_sample' ),
2841                                 'tip'    => wfMsg( 'media_tip' ),
2842                                 'key'    => 'M'
2843                         ) : false,
2844                         $wgUseTeX ?     array(
2845                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2846                                 'id'     => 'mw-editbutton-math',
2847                                 'open'   => "<math>",
2848                                 'close'  => "</math>",
2849                                 'sample' => wfMsg( 'math_sample' ),
2850                                 'tip'    => wfMsg( 'math_tip' ),
2851                                 'key'    => 'C'
2852                         ) : false,
2853                         array(
2854                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2855                                 'id'     => 'mw-editbutton-nowiki',
2856                                 'open'   => "<nowiki>",
2857                                 'close'  => "</nowiki>",
2858                                 'sample' => wfMsg( 'nowiki_sample' ),
2859                                 'tip'    => wfMsg( 'nowiki_tip' ),
2860                                 'key'    => 'N'
2861                         ),
2862                         array(
2863                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2864                                 'id'     => 'mw-editbutton-signature',
2865                                 'open'   => '--~~~~',
2866                                 'close'  => '',
2867                                 'sample' => '',
2868                                 'tip'    => wfMsg( 'sig_tip' ),
2869                                 'key'    => 'Y'
2870                         ),
2871                         array(
2872                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2873                                 'id'     => 'mw-editbutton-hr',
2874                                 'open'   => "\n----\n",
2875                                 'close'  => '',
2876                                 'sample' => '',
2877                                 'tip'    => wfMsg( 'hr_tip' ),
2878                                 'key'    => 'R'
2879                         )
2880                 );
2881
2882                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
2883                 foreach ( $toolarray as $tool ) {
2884                         if ( !$tool ) {
2885                                 continue;
2886                         }
2887
2888                         $params = array(
2889                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2890                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2891                                 // Older browsers show a "speedtip" type message only for ALT.
2892                                 // Ideally these should be different, realistically they
2893                                 // probably don't need to be.
2894                                 $tip = $tool['tip'],
2895                                 $open = $tool['open'],
2896                                 $close = $tool['close'],
2897                                 $sample = $tool['sample'],
2898                                 $cssId = $tool['id'],
2899                         );
2900
2901                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2902                 }
2903
2904                 // This used to be called on DOMReady from mediawiki.action.edit, which
2905                 // ended up causing race conditions with the setup code above.
2906                 $script .= "\n" .
2907                         "// Create button bar\n" .
2908                         "$(function() { mw.toolbar.init(); } );\n";
2909
2910                 $script .= '});';
2911                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2912
2913                 $toolbar = '<div id="toolbar"></div>';
2914
2915                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2916
2917                 return $toolbar;
2918         }
2919
2920         /**
2921          * Returns an array of html code of the following checkboxes:
2922          * minor and watch
2923          *
2924          * @param $tabindex Current tabindex
2925          * @param $checked Array of checkbox => bool, where bool indicates the checked
2926          *                 status of the checkbox
2927          *
2928          * @return array
2929          */
2930         public function getCheckboxes( &$tabindex, $checked ) {
2931                 global $wgUser;
2932
2933                 $checkboxes = array();
2934
2935                 // don't show the minor edit checkbox if it's a new page or section
2936                 if ( !$this->isNew ) {
2937                         $checkboxes['minor'] = '';
2938                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2939                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2940                                 $attribs = array(
2941                                         'tabindex'  => ++$tabindex,
2942                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2943                                         'id'        => 'wpMinoredit',
2944                                 );
2945                                 $checkboxes['minor'] =
2946                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2947                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2948                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2949                                         ">{$minorLabel}</label>";
2950                         }
2951                 }
2952
2953                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2954                 $checkboxes['watch'] = '';
2955                 if ( $wgUser->isLoggedIn() ) {
2956                         $attribs = array(
2957                                 'tabindex'  => ++$tabindex,
2958                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2959                                 'id'        => 'wpWatchthis',
2960                         );
2961                         $checkboxes['watch'] =
2962                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2963                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2964                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2965                                 ">{$watchLabel}</label>";
2966                 }
2967                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2968                 return $checkboxes;
2969         }
2970
2971         /**
2972          * Returns an array of html code of the following buttons:
2973          * save, diff, preview and live
2974          *
2975          * @param $tabindex Current tabindex
2976          *
2977          * @return array
2978          */
2979         public function getEditButtons( &$tabindex ) {
2980                 $buttons = array();
2981
2982                 $temp = array(
2983                         'id'        => 'wpSave',
2984                         'name'      => 'wpSave',
2985                         'type'      => 'submit',
2986                         'tabindex'  => ++$tabindex,
2987                         'value'     => wfMsg( 'savearticle' ),
2988                         'accesskey' => wfMsg( 'accesskey-save' ),
2989                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2990                 );
2991                 $buttons['save'] = Xml::element('input', $temp, '');
2992
2993                 ++$tabindex; // use the same for preview and live preview
2994                 $temp = array(
2995                         'id'        => 'wpPreview',
2996                         'name'      => 'wpPreview',
2997                         'type'      => 'submit',
2998                         'tabindex'  => $tabindex,
2999                         'value'     => wfMsg( 'showpreview' ),
3000                         'accesskey' => wfMsg( 'accesskey-preview' ),
3001                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
3002                 );
3003                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
3004                 $buttons['live'] = '';
3005
3006                 $temp = array(
3007                         'id'        => 'wpDiff',
3008                         'name'      => 'wpDiff',
3009                         'type'      => 'submit',
3010                         'tabindex'  => ++$tabindex,
3011                         'value'     => wfMsg( 'showdiff' ),
3012                         'accesskey' => wfMsg( 'accesskey-diff' ),
3013                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
3014                 );
3015                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
3016
3017                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
3018                 return $buttons;
3019         }
3020
3021         /**
3022          * Output preview text only. This can be sucked into the edit page
3023          * via JavaScript, and saves the server time rendering the skin as
3024          * well as theoretically being more robust on the client (doesn't
3025          * disturb the edit box's undo history, won't eat your text on
3026          * failure, etc).
3027          *
3028          * @todo This doesn't include category or interlanguage links.
3029          *       Would need to enhance it a bit, <s>maybe wrap them in XML
3030          *       or something...</s> that might also require more skin
3031          *       initialization, so check whether that's a problem.
3032          */
3033         function livePreview() {
3034                 global $wgOut;
3035                 $wgOut->disable();
3036                 header( 'Content-type: text/xml; charset=utf-8' );
3037                 header( 'Cache-control: no-cache' );
3038
3039                 $previewText = $this->getPreviewText();
3040                 #$categories = $skin->getCategoryLinks();
3041
3042                 $s =
3043                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
3044                 Xml::tags( 'livepreview', null,
3045                         Xml::element( 'preview', null, $previewText )
3046                         #.      Xml::element( 'category', null, $categories )
3047                 );
3048                 echo $s;
3049         }
3050
3051         /**
3052          * Call the stock "user is blocked" page
3053          *
3054          * @deprecated in 1.19; throw an exception directly instead
3055          */
3056         function blockedPage() {
3057                 wfDeprecated( __METHOD__, '1.19' );
3058                 global $wgUser;
3059
3060                 throw new UserBlockedError( $wgUser->mBlock );
3061         }
3062
3063         /**
3064          * Produce the stock "please login to edit pages" page
3065          *
3066          * @deprecated in 1.19; throw an exception directly instead
3067          */
3068         function userNotLoggedInPage() {
3069                 wfDeprecated( __METHOD__, '1.19' );
3070                 throw new PermissionsError( 'edit' );
3071         }
3072
3073         /**
3074          * Show an error page saying to the user that he has insufficient permissions
3075          * to create a new page
3076          *
3077          * @deprecated in 1.19; throw an exception directly instead
3078          */
3079         function noCreatePermission() {
3080                 wfDeprecated( __METHOD__, '1.19' );
3081                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
3082                 throw new PermissionsError( $permission );
3083         }
3084
3085         /**
3086          * Creates a basic error page which informs the user that
3087          * they have attempted to edit a nonexistent section.
3088          */
3089         function noSuchSectionPage() {
3090                 global $wgOut;
3091
3092                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3093
3094                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
3095                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3096                 $wgOut->addHTML( $res );
3097
3098                 $wgOut->returnToMain( false, $this->mTitle );
3099         }
3100
3101         /**
3102          * Produce the stock "your edit contains spam" page
3103          *
3104          * @param $match Text which triggered one or more filters
3105          * @deprecated since 1.17 Use method spamPageWithContent() instead
3106          */
3107         static function spamPage( $match = false ) {
3108                 wfDeprecated( __METHOD__, '1.17' );
3109
3110                 global $wgOut, $wgTitle;
3111
3112                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3113
3114                 $wgOut->addHTML( '<div id="spamprotected">' );
3115                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3116                 if ( $match ) {
3117                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3118                 }
3119                 $wgOut->addHTML( '</div>' );
3120
3121                 $wgOut->returnToMain( false, $wgTitle );
3122         }
3123
3124         /**
3125          * Show "your edit contains spam" page with your diff and text
3126          *
3127          * @param $match Text which triggered one or more filters
3128          */
3129         public function spamPageWithContent( $match = false ) {
3130                 global $wgOut;
3131                 $this->textbox2 = $this->textbox1;
3132
3133                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3134
3135                 $wgOut->addHTML( '<div id="spamprotected">' );
3136                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3137                 if ( $match ) {
3138                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3139                 }
3140                 $wgOut->addHTML( '</div>' );
3141
3142                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3143                 $de = new DifferenceEngine( $this->mArticle->getContext() ); #FIXME: get from content handler!
3144
3145                 $de->setText( $this->getCurrentText(), $this->textbox2 ); #FIXME: make Content based
3146
3147         $de->showDiff( wfMsg( "storedversion" ), wfMsgExt( 'yourtext', 'parseinline' ) );
3148
3149                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3150                 $this->showTextbox2();
3151
3152                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3153         }
3154
3155         /**
3156          * Format an anchor fragment as it would appear for a given section name
3157          * @param $text String
3158          * @return String
3159          * @private
3160          */
3161         function sectionAnchor( $text ) {
3162                 global $wgParser;
3163                 return $wgParser->guessSectionNameFromWikiText( $text );
3164         }
3165
3166         /**
3167          * Check if the browser is on a blacklist of user-agents known to
3168          * mangle UTF-8 data on form submission. Returns true if Unicode
3169          * should make it through, false if it's known to be a problem.
3170          * @return bool
3171          * @private
3172          */
3173         function checkUnicodeCompliantBrowser() {
3174                 global $wgBrowserBlackList;
3175                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
3176                         // No User-Agent header sent? Trust it by default...
3177                         return true;
3178                 }
3179                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
3180                 foreach ( $wgBrowserBlackList as $browser ) {
3181                         if ( preg_match($browser, $currentbrowser) ) {
3182                                 return false;
3183                         }
3184                 }
3185                 return true;
3186         }
3187
3188         /**
3189          * Filter an input field through a Unicode de-armoring process if it
3190          * came from an old browser with known broken Unicode editing issues.
3191          *
3192          * @param $request WebRequest
3193          * @param $field String
3194          * @return String
3195          * @private
3196          */
3197         function safeUnicodeInput( $request, $field ) {
3198                 $text = rtrim( $request->getText( $field ) );
3199                 return $request->getBool( 'safemode' )
3200                         ? $this->unmakesafe( $text )
3201                         : $text;
3202         }
3203
3204         /**
3205          * @param $request WebRequest
3206          * @param $text string
3207          * @return string
3208          */
3209         function safeUnicodeText( $request, $text ) {
3210                 $text = rtrim( $text );
3211                 return $request->getBool( 'safemode' )
3212                         ? $this->unmakesafe( $text )
3213                         : $text;
3214         }
3215
3216         /**
3217          * Filter an output field through a Unicode armoring process if it is
3218          * going to an old browser with known broken Unicode editing issues.
3219          *
3220          * @param $text String
3221          * @return String
3222          * @private
3223          */
3224         function safeUnicodeOutput( $text ) {
3225                 global $wgContLang;
3226                 $codedText = $wgContLang->recodeForEdit( $text );
3227                 return $this->checkUnicodeCompliantBrowser()
3228                         ? $codedText
3229                         : $this->makesafe( $codedText );
3230         }
3231
3232         /**
3233          * A number of web browsers are known to corrupt non-ASCII characters
3234          * in a UTF-8 text editing environment. To protect against this,
3235          * detected browsers will be served an armored version of the text,
3236          * with non-ASCII chars converted to numeric HTML character references.
3237          *
3238          * Preexisting such character references will have a 0 added to them
3239          * to ensure that round-trips do not alter the original data.
3240          *
3241          * @param $invalue String
3242          * @return String
3243          * @private
3244          */
3245         function makesafe( $invalue ) {
3246                 // Armor existing references for reversability.
3247                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3248
3249                 $bytesleft = 0;
3250                 $result = "";
3251                 $working = 0;
3252                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3253                         $bytevalue = ord( $invalue[$i] );
3254                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
3255                                 $result .= chr( $bytevalue );
3256                                 $bytesleft = 0;
3257                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
3258                                 $working = $working << 6;
3259                                 $working += ($bytevalue & 0x3F);
3260                                 $bytesleft--;
3261                                 if ( $bytesleft <= 0 ) {
3262                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3263                                 }
3264                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
3265                                 $working = $bytevalue & 0x1F;
3266                                 $bytesleft = 1;
3267                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
3268                                 $working = $bytevalue & 0x0F;
3269                                 $bytesleft = 2;
3270                         } else { //1111 0xxx
3271                                 $working = $bytevalue & 0x07;
3272                                 $bytesleft = 3;
3273                         }
3274                 }
3275                 return $result;
3276         }
3277
3278         /**
3279          * Reverse the previously applied transliteration of non-ASCII characters
3280          * back to UTF-8. Used to protect data from corruption by broken web browsers
3281          * as listed in $wgBrowserBlackList.
3282          *
3283          * @param $invalue String
3284          * @return String
3285          * @private
3286          */
3287         function unmakesafe( $invalue ) {
3288                 $result = "";
3289                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3290                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
3291                                 $i += 3;
3292                                 $hexstring = "";
3293                                 do {
3294                                         $hexstring .= $invalue[$i];
3295                                         $i++;
3296                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3297
3298                                 // Do some sanity checks. These aren't needed for reversability,
3299                                 // but should help keep the breakage down if the editor
3300                                 // breaks one of the entities whilst editing.
3301                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
3302                                         $codepoint = hexdec($hexstring);
3303                                         $result .= codepointToUtf8( $codepoint );
3304                                 } else {
3305                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3306                                 }
3307                         } else {
3308                                 $result .= substr( $invalue, $i, 1 );
3309                         }
3310                 }
3311                 // reverse the transform that we made for reversability reasons.
3312                 return strtr( $result, array( "&#x0" => "&#x" ) );
3313         }
3314 }