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 class EditPage {
  20         const AS_SUCCESS_UPDATE            = 200;
  21         const AS_SUCCESS_NEW_ARTICLE       = 201;
  22         const AS_HOOK_ERROR                = 210;
  23         const AS_FILTERING                 = 211;
  24         const AS_HOOK_ERROR_EXPECTED       = 212;
  25         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  26         const AS_CONTENT_TOO_BIG           = 216;
  27         const AS_USER_CANNOT_EDIT          = 217;
  28         const AS_READ_ONLY_PAGE_ANON       = 218;
  29         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  30         const AS_READ_ONLY_PAGE            = 220;
  31         const AS_RATE_LIMITED              = 221;
  32         const AS_ARTICLE_WAS_DELETED       = 222;
  33         const AS_NO_CREATE_PERMISSION      = 223;
  34         const AS_BLANK_ARTICLE             = 224;
  35         const AS_CONFLICT_DETECTED         = 225;
  36         const AS_SUMMARY_NEEDED            = 226;
  37         const AS_TEXTBOX_EMPTY             = 228;
  38         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
  39         const AS_OK                        = 230;
  40         const AS_END                       = 231;
  41         const AS_SPAM_ERROR                = 232;
  42         const AS_IMAGE_REDIRECT_ANON       = 233;
  43         const AS_IMAGE_REDIRECT_LOGGED     = 234;
  44
  45         /**
  46          * @var Article
  47          */
  48         var $mArticle;
  49
  50         /**
  51          * @var Title
  52          */
  53         var $mTitle;
  54         private $mContextTitle = null;
  55         var $action;
  56         var $isConflict = false;
  57         var $isCssJsSubpage = false;
  58         var $isCssSubpage = false;
  59         var $isJsSubpage = false;
  60         var $isNew = false; // new page or new section
  61         var $deletedSinceEdit;
  62         var $formtype;
  63         var $firsttime;
  64         var $lastDelete;
  65         var $mTokenOk = false;
  66         var $mTokenOkExceptSuffix = false;
  67         var $mTriedSave = false;
  68         var $incompleteForm = false;
  69         var $tooBig = false;
  70         var $kblength = false;
  71         var $missingComment = false;
  72         var $missingSummary = false;
  73         var $allowBlankSummary = false;
  74         var $autoSumm = '';
  75         var $hookError = '';
  76         #var $mPreviewTemplates;
  77
  78         /**
  79          * @var ParserOutput
  80          */
  81         var $mParserOutput;
  82
  83         var $mBaseRevision = false;
  84         var $mShowSummaryField = true;
  85
  86         # Form values
  87         var $save = false, $preview = false, $diff = false;
  88         var $minoredit = false, $watchthis = false, $recreate = false;
  89         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
  90         var $edittime = '', $section = '', $starttime = '';
  91         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
  92
  93         # Placeholders for text injection by hooks (must be HTML)
  94         # extensions should take care to _append_ to the present value
  95         public $editFormPageTop; // Before even the preview
  96         public $editFormTextTop;
  97         public $editFormTextBeforeContent;
  98         public $editFormTextAfterWarn;
  99         public $editFormTextAfterTools;
 100         public $editFormTextBottom;
 101         public $editFormTextAfterContent;
 102         public $previewTextAfterContent;
 103
 104         /* $didSave should be set to true whenever an article was succesfully altered. */
 105         public $didSave = false;
 106         public $undidRev = 0;
 107
 108         public $suppressIntro = false;
 109
 110         /**
 111          * @todo document
 112          * @param $article Article
 113          */
 114         function __construct( $article ) {
 115                 $this->mArticle =& $article;
 116                 $this->mTitle = $article->getTitle();
 117                 $this->action = 'submit';
 118
 119                 # Placeholders for text injection by hooks (empty per default)
 120                 $this->editFormPageTop =
 121                 $this->editFormTextTop =
 122                 $this->editFormTextBeforeContent =
 123                 $this->editFormTextAfterWarn =
 124                 $this->editFormTextAfterTools =
 125                 $this->editFormTextBottom =
 126                 $this->editFormTextAfterContent =
 127                 $this->previewTextAfterContent =
 128                 $this->mPreloadText = "";
 129         }
 130
 131         /**
 132          * @return Article
 133          */
 134         function getArticle() {
 135                 return $this->mArticle;
 136         }
 137
 138         /**
 139          * Set the context Title object
 140          *
 141          * @param $title Title object or null
 142          */
 143         public function setContextTitle( $title ) {
 144                 $this->mContextTitle = $title;
 145         }
 146
 147         /**
 148          * Get the context title object.
 149          * If not set, $wgTitle will be returned. This behavior might changed in
 150          * the future to return $this->mTitle instead.
 151          *
 152          * @return Title object
 153          */
 154         public function getContextTitle() {
 155                 if ( is_null( $this->mContextTitle ) ) {
 156                         global $wgTitle;
 157                         return $wgTitle;
 158                 } else {
 159                         return $this->mContextTitle;
 160                 }
 161         }
 162
 163         /**
 164          * Fetch initial editing page content.
 165          * @returns mixed string on success, $def_text for invalid sections
 166          * @private
 167          */
 168         function getContent( $def_text = '' ) {
 169                 global $wgOut, $wgRequest, $wgParser;
 170
 171                 wfProfileIn( __METHOD__ );
 172                 # Get variables from query string :P
 173                 $section = $wgRequest->getVal( 'section' );
 174
 175                 $preload = $wgRequest->getVal( 'preload',
 176                         // Custom preload text for new sections
 177                         $section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 178                 $undoafter = $wgRequest->getVal( 'undoafter' );
 179                 $undo = $wgRequest->getVal( 'undo' );
 180
 181                 // For message page not locally set, use the i18n message.
 182                 // For other non-existent articles, use preload text if any.
 183                 if ( !$this->mTitle->exists() ) {
 184                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 185                                 # If this is a system message, get the default text.
 186                                 $text = $this->mTitle->getDefaultMessageText();
 187                                 if( $text === false ) {
 188                                         $text = $this->getPreloadedText( $preload );
 189                                 }
 190                         } else {
 191                                 # If requested, preload some text.
 192                                 $text = $this->getPreloadedText( $preload );
 193                         }
 194                 // For existing pages, get text based on "undo" or section parameters.
 195                 } else {
 196                         $text = $this->mArticle->getContent();
 197                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 198                                 # If they got undoafter and undo round the wrong way, switch them
 199                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 200                         }
 201                         if ( $undo > 0 && $undo > $undoafter ) {
 202                                 # Undoing a specific edit overrides section editing; section-editing
 203                                 # doesn't work with undoing.
 204                                 if ( $undoafter ) {
 205                                         $undorev = Revision::newFromId( $undo );
 206                                         $oldrev = Revision::newFromId( $undoafter );
 207                                 } else {
 208                                         $undorev = Revision::newFromId( $undo );
 209                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 210                                 }
 211
 212                                 # Sanity check, make sure it's the right page,
 213                                 # the revisions exist and they were not deleted.
 214                                 # Otherwise, $text will be left as-is.
 215                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 216                                         $undorev->getPage() == $oldrev->getPage() &&
 217                                         $undorev->getPage() == $this->mArticle->getID() &&
 218                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 219                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 220
 221                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 222                                         if ( $undotext === false ) {
 223                                                 # Warn the user that something went wrong
 224                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' . wfMsgNoTrans( 'undo-failure' ) . '</div>' );
 225                                         } else {
 226                                                 $text = $undotext;
 227                                                 # Inform the user of our success and set an automatic edit summary
 228                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' . wfMsgNoTrans( 'undo-success' ) . '</div>' );
 229                                                 $firstrev = $oldrev->getNext();
 230                                                 # If we just undid one rev, use an autosummary
 231                                                 if ( $firstrev->mId == $undo ) {
 232                                                         $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 233                                                         $this->undidRev = $undo;
 234                                                 }
 235                                                 $this->formtype = 'diff';
 236                                         }
 237                                 } else {
 238                                         // Failed basic sanity checks.
 239                                         // Older revisions may have been removed since the link
 240                                         // was created, or we may simply have got bogus input.
 241                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' . wfMsgNoTrans( 'undo-norev' ) . '</div>' );
 242                                 }
 243                         } else if ( $section != '' ) {
 244                                 if ( $section == 'new' ) {
 245                                         $text = $this->getPreloadedText( $preload );
 246                                 } else {
 247                                         // Get section edit text (returns $def_text for invalid sections)
 248                                         $text = $wgParser->getSection( $text, $section, $def_text );
 249                                 }
 250                         }
 251                 }
 252
 253                 wfProfileOut( __METHOD__ );
 254                 return $text;
 255         }
 256
 257         /** Use this method before edit() to preload some text into the edit box */
 258         public function setPreloadedText( $text ) {
 259                 $this->mPreloadText = $text;
 260         }
 261
 262         /**
 263          * Get the contents to be preloaded into the box, either set by
 264          * an earlier setPreloadText() or by loading the given page.
 265          *
 266          * @param $preload String: representing the title to preload from.
 267          * @return String
 268          */
 269         protected function getPreloadedText( $preload ) {
 270                 global $wgUser, $wgParser;
 271                 if ( !empty( $this->mPreloadText ) ) {
 272                         return $this->mPreloadText;
 273                 } elseif ( $preload !== '' ) {
 274                         $title = Title::newFromText( $preload );
 275                         # Check for existence to avoid getting MediaWiki:Noarticletext
 276                         if ( isset( $title ) && $title->exists() && $title->userCanRead() ) {
 277                                 $article = new Article( $title );
 278
 279                                 if ( $article->isRedirect() ) {
 280                                         $title = Title::newFromRedirectRecurse( $article->getContent() );
 281                                         # Redirects to missing titles are displayed, to hidden pages are followed
 282                                         # Copying observed behaviour from ?action=view
 283                                         if ( $title->exists() ) {
 284                                                 if ($title->userCanRead() ) {
 285                                                         $article = new Article( $title );
 286                                                 } else {
 287                                                         return "";
 288                                                 }
 289                                         }
 290                                 }
 291                                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 292                                 return $wgParser->getPreloadText( $article->getContent(), $title, $parserOptions );
 293                         }
 294                 }
 295                 return '';
 296         }
 297
 298         /**
 299          * Check if a page was deleted while the user was editing it, before submit.
 300          * Note that we rely on the logging table, which hasn't been always there,
 301          * but that doesn't matter, because this only applies to brand new
 302          * deletes.
 303          */
 304         protected function wasDeletedSinceLastEdit() {
 305                 if ( $this->deletedSinceEdit !== null ) {
 306                         return $this->deletedSinceEdit;
 307                 }
 308
 309                 $this->deletedSinceEdit = false;
 310
 311                 if ( $this->mTitle->isDeletedQuick() ) {
 312                         $this->lastDelete = $this->getLastDelete();
 313                         if ( $this->lastDelete ) {
 314                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
 315                                 if ( $deleteTime > $this->starttime ) {
 316                                         $this->deletedSinceEdit = true;
 317                                 }
 318                         }
 319                 }
 320
 321                 return $this->deletedSinceEdit;
 322         }
 323
 324         /**
 325          * Checks whether the user entered a skin name in uppercase,
 326          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 327          */
 328         protected function isWrongCaseCssJsPage() {
 329                 if( $this->mTitle->isCssJsSubpage() ) {
 330                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 331                         $skins = array_merge(
 332                                 array_keys( Skin::getSkinNames() ),
 333                                 array( 'common' )
 334                         );
 335                         return !in_array( $name, $skins )
 336                                 && in_array( strtolower( $name ), $skins );
 337                 } else {
 338                         return false;
 339                 }
 340         }
 341
 342         function submit() {
 343                 $this->edit();
 344         }
 345
 346         /**
 347          * This is the function that gets called for "action=edit". It
 348          * sets up various member variables, then passes execution to
 349          * another function, usually showEditForm()
 350          *
 351          * The edit form is self-submitting, so that when things like
 352          * preview and edit conflicts occur, we get the same form back
 353          * with the extra stuff added.  Only when the final submission
 354          * is made and all is well do we actually save and redirect to
 355          * the newly-edited page.
 356          */
 357         function edit() {
 358                 global $wgOut, $wgRequest, $wgUser;
 359                 // Allow extensions to modify/prevent this form or submission
 360                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 361                         return;
 362                 }
 363
 364                 wfProfileIn( __METHOD__ );
 365                 wfDebug( __METHOD__.": enter\n" );
 366
 367                 // This is not an article
 368                 $wgOut->setArticleFlag( false );
 369
 370                 $this->importFormData( $wgRequest );
 371                 $this->firsttime = false;
 372
 373                 if ( $this->live ) {
 374                         $this->livePreview();
 375                         wfProfileOut( __METHOD__ );
 376                         return;
 377                 }
 378
 379                 if ( wfReadOnly() && $this->save ) {
 380                         // Force preview
 381                         $this->save = false;
 382                         $this->preview = true;
 383                 }
 384
 385                 $wgOut->addModules( array( 'mediawiki.action.edit' ) );
 386
 387                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
 388                         $wgOut->addModules( 'mediawiki.legacy.preview' );
 389                 }
 390                 // Bug #19334: textarea jumps when editing articles in IE8
 391                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
 392
 393                 $permErrors = $this->getEditPermissionErrors();
 394                 if ( $permErrors ) {
 395                         wfDebug( __METHOD__ . ": User can't edit\n" );
 396                         $content = $this->getContent( null );
 397                         $content = $content === '' ? null : $content;
 398                         $this->readOnlyPage( $content, true, $permErrors, 'edit' );
 399                         wfProfileOut( __METHOD__ );
 400                         return;
 401                 } else {
 402                         if ( $this->save ) {
 403                                 $this->formtype = 'save';
 404                         } else if ( $this->preview ) {
 405                                 $this->formtype = 'preview';
 406                         } else if ( $this->diff ) {
 407                                 $this->formtype = 'diff';
 408                         } else { # First time through
 409                                 $this->firsttime = true;
 410                                 if ( $this->previewOnOpen() ) {
 411                                         $this->formtype = 'preview';
 412                                 } else {
 413                                         $this->formtype = 'initial';
 414                                 }
 415                         }
 416                 }
 417
 418                 // If they used redlink=1 and the page exists, redirect to the main article
 419                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 420                         $wgOut->redirect( $this->mTitle->getFullURL() );
 421                 }
 422
 423                 wfProfileIn( __METHOD__."-business-end" );
 424
 425                 $this->isConflict = false;
 426                 // css / js subpages of user pages get a special treatment
 427                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 428                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 429                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 430                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 431                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 432
 433                 # Show applicable editing introductions
 434                 if ( $this->formtype == 'initial' || $this->firsttime )
 435                         $this->showIntro();
 436
 437                 if ( $this->mTitle->isTalkPage() ) {
 438                         $wgOut->addWikiMsg( 'talkpagetext' );
 439                 }
 440
 441                 # Optional notices on a per-namespace and per-page basis
 442                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 443                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
 444                 if ( $editnotice_ns_message->exists() ) {
 445                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
 446                 }
 447                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 448                         $parts = explode( '/', $this->mTitle->getDBkey() );
 449                         $editnotice_base = $editnotice_ns;
 450                         while ( count( $parts ) > 0 ) {
 451                                 $editnotice_base .= '-'.array_shift( $parts );
 452                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
 453                                 if ( $editnotice_base_msg->exists() ) {
 454                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
 455                                 }
 456                         }
 457                 }
 458
 459                 # Attempt submission here.  This will check for edit conflicts,
 460                 # and redundantly check for locked database, blocked IPs, etc.
 461                 # that edit() already checked just in case someone tries to sneak
 462                 # in the back door with a hand-edited submission URL.
 463
 464                 if ( 'save' == $this->formtype ) {
 465                         if ( !$this->attemptSave() ) {
 466                                 wfProfileOut( __METHOD__."-business-end" );
 467                                 wfProfileOut( __METHOD__ );
 468                                 return;
 469                         }
 470                 }
 471
 472                 # First time through: get contents, set time for conflict
 473                 # checking, etc.
 474                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 475                         if ( $this->initialiseForm() === false ) {
 476                                 $this->noSuchSectionPage();
 477                                 wfProfileOut( __METHOD__."-business-end" );
 478                                 wfProfileOut( __METHOD__ );
 479                                 return;
 480                         }
 481                         if ( !$this->mTitle->getArticleId() )
 482                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 483                         else
 484                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 485                 }
 486
 487                 $this->showEditForm();
 488                 wfProfileOut( __METHOD__."-business-end" );
 489                 wfProfileOut( __METHOD__ );
 490         }
 491
 492         protected function getEditPermissionErrors() {
 493                 global $wgUser;
 494                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 495                 # Can this title be created?
 496                 if ( !$this->mTitle->exists() ) {
 497                         $permErrors = array_merge( $permErrors,
 498                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 499                 }
 500                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 501                 $remove = array();
 502                 foreach( $permErrors as $error ) {
 503                         if ( ( $this->preview || $this->diff ) &&
 504                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 505                         {
 506                                 $remove[] = $error;
 507                         }
 508                 }
 509                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 510                 return $permErrors;
 511         }
 512
 513         /**
 514          * Show a read-only error
 515          * Parameters are the same as OutputPage:readOnlyPage()
 516          * Redirect to the article page if redlink=1
 517          */
 518         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 519                 global $wgRequest, $wgOut;
 520                 if ( $wgRequest->getBool( 'redlink' ) ) {
 521                         // The edit page was reached via a red link.
 522                         // Redirect to the article page and let them click the edit tab if
 523                         // they really want a permission error.
 524                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 525                 } else {
 526                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 527                 }
 528         }
 529
 530         /**
 531          * Should we show a preview when the edit form is first shown?
 532          *
 533          * @return bool
 534          */
 535         protected function previewOnOpen() {
 536                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 537                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 538                         // Explicit override from request
 539                         return true;
 540                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 541                         // Explicit override from request
 542                         return false;
 543                 } elseif ( $this->section == 'new' ) {
 544                         // Nothing *to* preview for new sections
 545                         return false;
 546                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 547                         // Standard preference behaviour
 548                         return true;
 549                 } elseif ( !$this->mTitle->exists() &&
 550                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 551                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 552                 {
 553                         // Categories are special
 554                         return true;
 555                 } else {
 556                         return false;
 557                 }
 558         }
 559
 560         /**
 561          * Does this EditPage class support section editing?
 562          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 563          *
 564          * @return bool
 565          */
 566         protected function isSectionEditSupported() {
 567                 return true;
 568         }
 569
 570         /**
 571          * Returns the URL to use in the form's action attribute.
 572          * This is used by EditPage subclasses when simply customizing the action
 573          * variable in the constructor is not enough. This can be used when the
 574          * EditPage lives inside of a Special page rather than a custom page action.
 575          *
 576          * @param $title Title object for which is being edited (where we go to for &action= links)
 577          * @return string
 578          */
 579         protected function getActionURL( Title $title ) {
 580                 return $title->getLocalURL( array( 'action' => $this->action ) );
 581         }
 582
 583         /**
 584          * @todo document
 585          * @param $request
 586          */
 587         function importFormData( &$request ) {
 588                 global $wgLang, $wgUser;
 589
 590                 wfProfileIn( __METHOD__ );
 591
 592                 # Section edit can come from either the form or a link
 593                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 594
 595                 if ( $request->wasPosted() ) {
 596                         # These fields need to be checked for encoding.
 597                         # Also remove trailing whitespace, but don't remove _initial_
 598                         # whitespace from the text boxes. This may be significant formatting.
 599                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 600                         if ( !$request->getCheck('wpTextbox2') ) {
 601                                 // Skip this if wpTextbox2 has input, it indicates that we came
 602                                 // from a conflict page with raw page text, not a custom form
 603                                 // modified by subclasses
 604                                 wfProfileIn( get_class($this)."::importContentFormData" );
 605                                 $textbox1 = $this->importContentFormData( $request );
 606                                 if ( isset($textbox1) )
 607                                         $this->textbox1 = $textbox1;
 608                                 wfProfileOut( get_class($this)."::importContentFormData" );
 609                         }
 610
 611                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 612                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 613
 614                         # Remove extra headings from summaries and new sections.
 615                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 616
 617                         $this->edittime = $request->getVal( 'wpEdittime' );
 618                         $this->starttime = $request->getVal( 'wpStarttime' );
 619
 620                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 621
 622                         if ($this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null) {
 623                                 // wpTextbox1 field is missing, possibly due to being "too big"
 624                                 // according to some filter rules such as Suhosin's setting for
 625                                 // suhosin.request.max_value_length (d'oh)
 626                                 $this->incompleteForm = true;
 627                         } else {
 628                                 // edittime should be one of our last fields; if it's missing,
 629                                 // the submission probably broke somewhere in the middle.
 630                                 $this->incompleteForm = is_null( $this->edittime );
 631                         }
 632                         if ( $this->incompleteForm ) {
 633                                 # If the form is incomplete, force to preview.
 634                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 635                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 636                                 $this->preview = true;
 637                         } else {
 638                                 /* Fallback for live preview */
 639                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 640                                 $this->diff = $request->getCheck( 'wpDiff' );
 641
 642                                 // Remember whether a save was requested, so we can indicate
 643                                 // if we forced preview due to session failure.
 644                                 $this->mTriedSave = !$this->preview;
 645
 646                                 if ( $this->tokenOk( $request ) ) {
 647                                         # Some browsers will not report any submit button
 648                                         # if the user hits enter in the comment box.
 649                                         # The unmarked state will be assumed to be a save,
 650                                         # if the form seems otherwise complete.
 651                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 652                                 } else if ( $this->diff ) {
 653                                         # Failed token check, but only requested "Show Changes".
 654                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 655                                 } else {
 656                                         # Page might be a hack attempt posted from
 657                                         # an external site. Preview instead of saving.
 658                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 659                                         $this->preview = true;
 660                                 }
 661                         }
 662                         $this->save = !$this->preview && !$this->diff;
 663                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 664                                 $this->edittime = null;
 665                         }
 666
 667                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 668                                 $this->starttime = null;
 669                         }
 670
 671                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 672
 673                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 674                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 675
 676                         # Don't force edit summaries when a user is editing their own user or talk page
 677                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 678                                 $this->mTitle->getText() == $wgUser->getName() )
 679                         {
 680                                 $this->allowBlankSummary = true;
 681                         } else {
 682                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 683                         }
 684
 685                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 686                 } else {
 687                         # Not a posted form? Start with nothing.
 688                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 689                         $this->textbox1  = '';
 690                         $this->summary   = '';
 691                         $this->edittime  = '';
 692                         $this->starttime = wfTimestampNow();
 693                         $this->edit      = false;
 694                         $this->preview   = false;
 695                         $this->save      = false;
 696                         $this->diff      = false;
 697                         $this->minoredit = false;
 698                         $this->watchthis = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 699                         $this->recreate  = false;
 700
 701                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 702                                 $this->summary = $request->getVal( 'preloadtitle' );
 703                         }
 704                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 705                                 $this->summary = $request->getText( 'summary' );
 706                         }
 707
 708                         if ( $request->getVal( 'minor' ) ) {
 709                                 $this->minoredit = true;
 710                         }
 711                 }
 712
 713                 $this->bot = $request->getBool( 'bot', true );
 714                 $this->nosummary = $request->getBool( 'nosummary' );
 715
 716                 // @todo FIXME: Unused variable?
 717                 $this->oldid = $request->getInt( 'oldid' );
 718
 719                 $this->live = $request->getCheck( 'live' );
 720                 $this->editintro = $request->getText( 'editintro',
 721                         // Custom edit intro for new sections
 722                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 723
 724                 // Allow extensions to modify form data
 725                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 726
 727                 wfProfileOut( __METHOD__ );
 728         }
 729
 730         /**
 731          * Subpage overridable method for extracting the page content data from the
 732          * posted form to be placed in $this->textbox1, if using customized input
 733          * this method should be overrided and return the page text that will be used
 734          * for saving, preview parsing and so on...
 735          *
 736          * @param $request WebRequest
 737          */
 738         protected function importContentFormData( &$request ) {
 739                 return; // Don't do anything, EditPage already extracted wpTextbox1
 740         }
 741
 742         /**
 743          * Make sure the form isn't faking a user's credentials.
 744          *
 745          * @param $request WebRequest
 746          * @return bool
 747          * @private
 748          */
 749         function tokenOk( &$request ) {
 750                 global $wgUser;
 751                 $token = $request->getVal( 'wpEditToken' );
 752                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 753                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 754                 return $this->mTokenOk;
 755         }
 756
 757         /**
 758          * Show all applicable editing introductions
 759          */
 760         protected function showIntro() {
 761                 global $wgOut, $wgUser;
 762                 if ( $this->suppressIntro ) {
 763                         return;
 764                 }
 765
 766                 $namespace = $this->mTitle->getNamespace();
 767
 768                 if ( $namespace == NS_MEDIAWIKI ) {
 769                         # Show a warning if editing an interface message
 770                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
 771                 }
 772
 773                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
 774                 # Show log extract when the user is currently blocked
 775                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
 776                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 777                         $username = $parts[0];
 778                         $user = User::newFromName( $username, false /* allow IP users*/ );
 779                         $ip = User::isIP( $username );
 780                         if ( !$user->isLoggedIn() && !$ip ) { # User does not exist
 781                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
 782                                         array( 'userpage-userdoesnotexist', $username ) );
 783                         } else if ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
 784                                 LogEventsList::showLogExtract(
 785                                         $wgOut,
 786                                         'block',
 787                                         $user->getUserPage()->getPrefixedText(),
 788                                         '',
 789                                         array(
 790                                                 'lim' => 1,
 791                                                 'showIfEmpty' => false,
 792                                                 'msgKey' => array(
 793                                                         'blocked-notice-logextract',
 794                                                         $user->getName() # Support GENDER in notice
 795                                                 )
 796                                         )
 797                                 );
 798                         }
 799                 }
 800                 # Try to add a custom edit intro, or use the standard one if this is not possible.
 801                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 802                         if ( $wgUser->isLoggedIn() ) {
 803                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
 804                         } else {
 805                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
 806                         }
 807                 }
 808                 # Give a notice if the user is editing a deleted/moved page...
 809                 if ( !$this->mTitle->exists() ) {
 810                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle->getPrefixedText(),
 811                                 '', array( 'lim' => 10,
 812                                            'conds' => array( "log_action != 'revision'" ),
 813                                            'showIfEmpty' => false,
 814                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
 815                         );
 816                 }
 817         }
 818
 819         /**
 820          * Attempt to show a custom editing introduction, if supplied
 821          *
 822          * @return bool
 823          */
 824         protected function showCustomIntro() {
 825                 if ( $this->editintro ) {
 826                         $title = Title::newFromText( $this->editintro );
 827                         if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 828                                 global $wgOut;
 829                                 // Added using template syntax, to take <noinclude>'s into account.
 830                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
 831                                 return true;
 832                         } else {
 833                                 return false;
 834                         }
 835                 } else {
 836                         return false;
 837                 }
 838         }
 839
 840         /**
 841          * Attempt submission (no UI)
 842          * @return one of the constants describing the result
 843          */
 844         function internalAttemptSave( &$result, $bot = false ) {
 845                 global $wgFilterCallback, $wgUser, $wgParser;
 846                 global $wgMaxArticleSize;
 847
 848                 wfProfileIn( __METHOD__  );
 849                 wfProfileIn( __METHOD__ . '-checks' );
 850
 851                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
 852                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 853                         wfProfileOut( __METHOD__ . '-checks' );
 854                         wfProfileOut( __METHOD__  );
 855                         return self::AS_HOOK_ERROR;
 856                 }
 857
 858                 # Check image redirect
 859                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 860                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 861                         !$wgUser->isAllowed( 'upload' ) ) {
 862                                 $isAnon = $wgUser->isAnon();
 863
 864                                 wfProfileOut( __METHOD__ . '-checks' );
 865                                 wfProfileOut( __METHOD__  );
 866
 867                                 return $isAnon ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
 868                 }
 869
 870                 # Check for spam
 871                 $match = self::matchSummarySpamRegex( $this->summary );
 872                 if ( $match === false ) {
 873                         $match = self::matchSpamRegex( $this->textbox1 );
 874                 }
 875                 if ( $match !== false ) {
 876                         $result['spam'] = $match;
 877                         $ip = wfGetIP();
 878                         $pdbk = $this->mTitle->getPrefixedDBkey();
 879                         $match = str_replace( "\n", '', $match );
 880                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 881                         wfProfileOut( __METHOD__ . '-checks' );
 882                         wfProfileOut( __METHOD__ );
 883                         return self::AS_SPAM_ERROR;
 884                 }
 885                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 886                         # Error messages or other handling should be performed by the filter function
 887                         wfProfileOut( __METHOD__ . '-checks' );
 888                         wfProfileOut( __METHOD__ );
 889                         return self::AS_FILTERING;
 890                 }
 891                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 892                         # Error messages etc. could be handled within the hook...
 893                         wfProfileOut( __METHOD__ . '-checks' );
 894                         wfProfileOut( __METHOD__ );
 895                         return self::AS_HOOK_ERROR;
 896                 } elseif ( $this->hookError != '' ) {
 897                         # ...or the hook could be expecting us to produce an error
 898                         wfProfileOut( __METHOD__ . '-checks' );
 899                         wfProfileOut( __METHOD__ );
 900                         return self::AS_HOOK_ERROR_EXPECTED;
 901                 }
 902                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 903                         # Check block state against master, thus 'false'.
 904                         wfProfileOut( __METHOD__ . '-checks' );
 905                         wfProfileOut( __METHOD__ );
 906                         return self::AS_BLOCKED_PAGE_FOR_USER;
 907                 }
 908                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
 909                 if ( $this->kblength > $wgMaxArticleSize ) {
 910                         // Error will be displayed by showEditForm()
 911                         $this->tooBig = true;
 912                         wfProfileOut( __METHOD__ . '-checks' );
 913                         wfProfileOut( __METHOD__ );
 914                         return self::AS_CONTENT_TOO_BIG;
 915                 }
 916
 917                 if ( !$wgUser->isAllowed( 'edit' ) ) {
 918                         if ( $wgUser->isAnon() ) {
 919                                 wfProfileOut( __METHOD__ . '-checks' );
 920                                 wfProfileOut( __METHOD__ );
 921                                 return self::AS_READ_ONLY_PAGE_ANON;
 922                         } else {
 923                                 wfProfileOut( __METHOD__ . '-checks' );
 924                                 wfProfileOut( __METHOD__ );
 925                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 926                         }
 927                 }
 928
 929                 if ( wfReadOnly() ) {
 930                         wfProfileOut( __METHOD__ . '-checks' );
 931                         wfProfileOut( __METHOD__ );
 932                         return self::AS_READ_ONLY_PAGE;
 933                 }
 934                 if ( $wgUser->pingLimiter() ) {
 935                         wfProfileOut( __METHOD__ . '-checks' );
 936                         wfProfileOut( __METHOD__ );
 937                         return self::AS_RATE_LIMITED;
 938                 }
 939
 940                 # If the article has been deleted while editing, don't save it without
 941                 # confirmation
 942                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 943                         wfProfileOut( __METHOD__ . '-checks' );
 944                         wfProfileOut( __METHOD__ );
 945                         return self::AS_ARTICLE_WAS_DELETED;
 946                 }
 947
 948                 wfProfileOut( __METHOD__ . '-checks' );
 949
 950                 # If article is new, insert it.
 951                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
 952                 $new = ( $aid == 0 );
 953
 954                 if ( $new ) {
 955                         // Late check for create permission, just in case *PARANOIA*
 956                         if ( !$this->mTitle->userCan( 'create' ) ) {
 957                                 wfDebug( __METHOD__ . ": no create permission\n" );
 958                                 wfProfileOut( __METHOD__ );
 959                                 return self::AS_NO_CREATE_PERMISSION;
 960                         }
 961
 962                         # Don't save a new article if it's blank.
 963                         if ( $this->textbox1 == '' ) {
 964                                 wfProfileOut( __METHOD__ );
 965                                 return self::AS_BLANK_ARTICLE;
 966                         }
 967
 968                         // Run post-section-merge edit filter
 969                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 970                                 # Error messages etc. could be handled within the hook...
 971                                 wfProfileOut( __METHOD__ );
 972                                 return self::AS_HOOK_ERROR;
 973                         } elseif ( $this->hookError != '' ) {
 974                                 # ...or the hook could be expecting us to produce an error
 975                                 wfProfileOut( __METHOD__ );
 976                                 return self::AS_HOOK_ERROR_EXPECTED;
 977                         }
 978
 979                         # Handle the user preference to force summaries here. Check if it's not a redirect.
 980                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
 981                                 if ( md5( $this->summary ) == $this->autoSumm ) {
 982                                         $this->missingSummary = true;
 983                                         wfProfileOut( __METHOD__ );
 984                                         return self::AS_SUMMARY_NEEDED;
 985                                 }
 986                         }
 987
 988                         $text = $this->textbox1;
 989                         if ( $this->section == 'new' && $this->summary != '' ) {
 990                                 $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
 991                         }
 992
 993                         $retval = self::AS_SUCCESS_NEW_ARTICLE;
 994
 995                 } else {
 996
 997                         # Article exists. Check for edit conflict.
 998
 999                         $this->mArticle->clear(); # Force reload of dates, etc.
1000
1001                         wfDebug( "timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n" );
1002
1003                         if ( $this->mArticle->getTimestamp() != $this->edittime ) {
1004                                 $this->isConflict = true;
1005                                 if ( $this->section == 'new' ) {
1006                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1007                                                 $this->mArticle->getComment() == $this->summary ) {
1008                                                 // Probably a duplicate submission of a new comment.
1009                                                 // This can happen when squid resends a request after
1010                                                 // a timeout but the first one actually went through.
1011                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1012                                         } else {
1013                                                 // New comment; suppress conflict.
1014                                                 $this->isConflict = false;
1015                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1016                                         }
1017                                 }
1018                         }
1019                         $userid = $wgUser->getId();
1020
1021                         # Suppress edit conflict with self, except for section edits where merging is required.
1022                         if ( $this->isConflict && $this->section == '' && $this->userWasLastToEdit( $userid, $this->edittime ) ) {
1023                                 wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1024                                 $this->isConflict = false;
1025                         }
1026
1027                         if ( $this->isConflict ) {
1028                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
1029                                         $this->mArticle->getTimestamp() . "')\n" );
1030                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
1031                         } else {
1032                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1033                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
1034                         }
1035                         if ( is_null( $text ) ) {
1036                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1037                                 $this->isConflict = true;
1038                                 $text = $this->textbox1; // do not try to merge here!
1039                         } else if ( $this->isConflict ) {
1040                                 # Attempt merge
1041                                 if ( $this->mergeChangesInto( $text ) ) {
1042                                         // Successful merge! Maybe we should tell the user the good news?
1043                                         $this->isConflict = false;
1044                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1045                                 } else {
1046                                         $this->section = '';
1047                                         $this->textbox1 = $text;
1048                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1049                                 }
1050                         }
1051
1052                         if ( $this->isConflict ) {
1053                                 wfProfileOut( __METHOD__ );
1054                                 return self::AS_CONFLICT_DETECTED;
1055                         }
1056
1057                         $oldtext = $this->mArticle->getContent();
1058
1059                         // Run post-section-merge edit filter
1060                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1061                                 # Error messages etc. could be handled within the hook...
1062                                 wfProfileOut( __METHOD__ );
1063                                 return self::AS_HOOK_ERROR;
1064                         } elseif ( $this->hookError != '' ) {
1065                                 # ...or the hook could be expecting us to produce an error
1066                                 wfProfileOut( __METHOD__ );
1067                                 return self::AS_HOOK_ERROR_EXPECTED;
1068                         }
1069
1070                         # Handle the user preference to force summaries here, but not for null edits
1071                         if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp( $oldtext, $text )
1072                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1073                         {
1074                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1075                                         $this->missingSummary = true;
1076                                         wfProfileOut( __METHOD__ );
1077                                         return self::AS_SUMMARY_NEEDED;
1078                                 }
1079                         }
1080
1081                         # And a similar thing for new sections
1082                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1083                                 if ( trim( $this->summary ) == '' ) {
1084                                         $this->missingSummary = true;
1085                                         wfProfileOut( __METHOD__ );
1086                                         return self::AS_SUMMARY_NEEDED;
1087                                 }
1088                         }
1089
1090                         # All's well
1091                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1092                         $sectionanchor = '';
1093                         if ( $this->section == 'new' ) {
1094                                 if ( $this->textbox1 == '' ) {
1095                                         $this->missingComment = true;
1096                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1097                                         wfProfileOut( __METHOD__ );
1098                                         return self::AS_TEXTBOX_EMPTY;
1099                                 }
1100                                 if ( $this->summary != '' ) {
1101                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1102                                         # This is a new section, so create a link to the new section
1103                                         # in the revision summary.
1104                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1105                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1106                                 }
1107                         } elseif ( $this->section != '' ) {
1108                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1109                                 # XXX: might be better to integrate this into Article::replaceSection
1110                                 # for duplicate heading checking and maybe parsing
1111                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1112                                 # we can't deal with anchors, includes, html etc in the header for now,
1113                                 # headline would need to be parsed to improve this
1114                                 if ( $hasmatch and strlen( $matches[2] ) > 0 ) {
1115                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1116                                 }
1117                         }
1118                         $result['sectionanchor'] = $sectionanchor;
1119                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1120
1121                         // Save errors may fall down to the edit form, but we've now
1122                         // merged the section into full text. Clear the section field
1123                         // so that later submission of conflict forms won't try to
1124                         // replace that into a duplicated mess.
1125                         $this->textbox1 = $text;
1126                         $this->section = '';
1127
1128                         $retval = self::AS_SUCCESS_UPDATE;
1129                 }
1130
1131                 // Check for length errors again now that the section is merged in
1132                 $this->kblength = (int)( strlen( $text ) / 1024 );
1133                 if ( $this->kblength > $wgMaxArticleSize ) {
1134                         $this->tooBig = true;
1135                         wfProfileOut( __METHOD__ );
1136                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
1137                 }
1138
1139                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1140                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1141                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1142                         ( $bot ? EDIT_FORCE_BOT : 0 );
1143
1144                 $status = $this->mArticle->doEdit( $text, $this->summary, $flags );
1145
1146                 if ( $status->isOK() ) {
1147                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1148                         $this->commitWatch();
1149                         wfProfileOut( __METHOD__ );
1150                         return $retval;
1151                 } else {
1152                         $this->isConflict = true;
1153                         wfProfileOut( __METHOD__ );
1154                         return self::AS_END;
1155                 }
1156         }
1157
1158         /**
1159          * Commit the change of watch status
1160          */
1161         protected function commitWatch() {
1162                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1163                         $dbw = wfGetDB( DB_MASTER );
1164                         $dbw->begin();
1165                         if ( $this->watchthis ) {
1166                                 Action::factory( 'watch', $this->mArticle )->execute();
1167                         } else {
1168                                 Action::factory( 'unwatch', $this->mArticle )->execute();
1169                         }
1170                         $dbw->commit();
1171                 }
1172         }
1173
1174         /**
1175          * Check if no edits were made by other users since
1176          * the time a user started editing the page. Limit to
1177          * 50 revisions for the sake of performance.
1178          */
1179         protected function userWasLastToEdit( $id, $edittime ) {
1180                 if( !$id ) return false;
1181                 $dbw = wfGetDB( DB_MASTER );
1182                 $res = $dbw->select( 'revision',
1183                         'rev_user',
1184                         array(
1185                                 'rev_page' => $this->mArticle->getId(),
1186                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1187                         ),
1188                         __METHOD__,
1189                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1190                 foreach ( $res as $row ) {
1191                         if( $row->rev_user != $id ) {
1192                                 return false;
1193                         }
1194                 }
1195                 return true;
1196         }
1197
1198         /**
1199          * Check given input text against $wgSpamRegex, and return the text of the first match.
1200          * @return mixed -- matching string or false
1201          */
1202         public static function matchSpamRegex( $text ) {
1203                 global $wgSpamRegex;
1204                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1205                 $regexes = (array)$wgSpamRegex;
1206                 return self::matchSpamRegexInternal( $text, $regexes );
1207         }
1208
1209         /**
1210          * Check given input text against $wgSpamRegex, and return the text of the first match.
1211          * @return mixed -- matching string or false
1212          */
1213         public static function matchSummarySpamRegex( $text ) {
1214                 global $wgSummarySpamRegex;
1215                 $regexes = (array)$wgSummarySpamRegex;
1216                 return self::matchSpamRegexInternal( $text, $regexes );
1217         }
1218
1219         protected static function matchSpamRegexInternal( $text, $regexes ) {
1220                 foreach( $regexes as $regex ) {
1221                         $matches = array();
1222                         if( preg_match( $regex, $text, $matches ) ) {
1223                                 return $matches[0];
1224                         }
1225                 }
1226                 return false;
1227         }
1228
1229         /**
1230          * Initialise form fields in the object
1231          * Called on the first invocation, e.g. when a user clicks an edit link
1232          * @returns bool -- if the requested section is valid
1233          */
1234         function initialiseForm() {
1235                 global $wgUser;
1236                 $this->edittime = $this->mArticle->getTimestamp();
1237                 $this->textbox1 = $this->getContent( false );
1238                 // activate checkboxes if user wants them to be always active
1239                 # Sort out the "watch" checkbox
1240                 if ( $wgUser->getOption( 'watchdefault' ) ) {
1241                         # Watch all edits
1242                         $this->watchthis = true;
1243                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1244                         # Watch creations
1245                         $this->watchthis = true;
1246                 } elseif ( $this->mTitle->userIsWatching() ) {
1247                         # Already watched
1248                         $this->watchthis = true;
1249                 }
1250                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) $this->minoredit = true;
1251                 if ( $this->textbox1 === false ) return false;
1252                 wfProxyCheck();
1253                 return true;
1254         }
1255
1256         function setHeaders() {
1257                 global $wgOut;
1258                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1259                 if ( $this->formtype == 'preview' ) {
1260                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1261                 }
1262                 if ( $this->isConflict ) {
1263                         $wgOut->setPageTitle( wfMsg( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1264                 } elseif ( $this->section != '' ) {
1265                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1266                         $wgOut->setPageTitle( wfMsg( $msg, $this->getContextTitle()->getPrefixedText() ) );
1267                 } else {
1268                         # Use the title defined by DISPLAYTITLE magic word when present
1269                         if ( isset( $this->mParserOutput )
1270                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1271                                 $title = $dt;
1272                         } else {
1273                                 $title = $this->getContextTitle()->getPrefixedText();
1274                         }
1275                         $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
1276                 }
1277         }
1278
1279         /**
1280          * Send the edit form and related headers to $wgOut
1281          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1282          *     during form output near the top, for captchas and the like.
1283          */
1284         function showEditForm( $formCallback = null ) {
1285                 global $wgOut, $wgUser;
1286
1287                 wfProfileIn( __METHOD__ );
1288
1289                 $sk = $wgUser->getSkin();
1290
1291                 #need to parse the preview early so that we know which templates are used,
1292                 #otherwise users with "show preview after edit box" will get a blank list
1293                 #we parse this near the beginning so that setHeaders can do the title
1294                 #setting work instead of leaving it in getPreviewText
1295                 $previewOutput = '';
1296                 if ( $this->formtype == 'preview' ) {
1297                         $previewOutput = $this->getPreviewText();
1298                 }
1299
1300                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1301
1302                 $this->setHeaders();
1303
1304                 # Enabled article-related sidebar, toplinks, etc.
1305                 $wgOut->setArticleRelated( true );
1306
1307                 if ( $this->showHeader() === false ) {
1308                         wfProfileOut( __METHOD__ );
1309                         return;
1310                 }
1311
1312                 $action = htmlspecialchars( $this->getActionURL( $this->getContextTitle() ) );
1313
1314                 if ( $wgUser->getOption( 'showtoolbar' ) and !$this->isCssJsSubpage ) {
1315                         # prepare toolbar for edit buttons
1316                         $toolbar = EditPage::getEditToolbar();
1317                 } else {
1318                         $toolbar = '';
1319                 }
1320
1321
1322                 $wgOut->addHTML( $this->editFormPageTop );
1323
1324                 if ( $wgUser->getOption( 'previewontop' ) ) {
1325                         $this->displayPreviewArea( $previewOutput, true );
1326                 }
1327
1328                 $wgOut->addHTML( $this->editFormTextTop );
1329
1330                 $templates = $this->getTemplates();
1331                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1332
1333                 $hiddencats = $this->mArticle->getHiddenCategories();
1334                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1335
1336                 if ( $this->wasDeletedSinceLastEdit() && 'save' != $this->formtype ) {
1337                         $wgOut->wrapWikiMsg(
1338                                 "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1339                                 'deletedwhileediting' );
1340                 } elseif ( $this->wasDeletedSinceLastEdit() ) {
1341                         // Hide the toolbar and edit area, user can click preview to get it back
1342                         // Add an confirmation checkbox and explanation.
1343                         $toolbar = '';
1344                         // @todo move this to a cleaner conditional instead of blanking a variable
1345                 }
1346                 $wgOut->addHTML( <<<HTML
1347 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1348 HTML
1349 );
1350
1351                 if ( is_callable( $formCallback ) ) {
1352                         call_user_func_array( $formCallback, array( &$wgOut ) );
1353                 }
1354
1355                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1356
1357                 // Put these up at the top to ensure they aren't lost on early form submission
1358                 $this->showFormBeforeText();
1359
1360                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1361                         $username = $this->lastDelete->user_name;
1362                         $comment = $this->lastDelete->log_comment;
1363
1364                         // It is better to not parse the comment at all than to have templates expanded in the middle
1365                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1366                         $key = $comment === ''
1367                                 ? 'confirmrecreate-noreason'
1368                                 : 'confirmrecreate';
1369                         $wgOut->addHTML(
1370                                 '<div class="mw-confirm-recreate">' .
1371                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1372                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1373                                         array( 'title' => $sk->titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1374                                 ) .
1375                                 '</div>'
1376                         );
1377                 }
1378
1379                 # If a blank edit summary was previously provided, and the appropriate
1380                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1381                 # user being bounced back more than once in the event that a summary
1382                 # is not required.
1383                 #####
1384                 # For a bit more sophisticated detection of blank summaries, hash the
1385                 # automatic one and pass that in the hidden field wpAutoSummary.
1386                 if ( $this->missingSummary ||
1387                         ( $this->section == 'new' && $this->nosummary ) )
1388                                 $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1389                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1390                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1391
1392                 $wgOut->addHTML( Html::hidden( 'oldid', $this->mArticle->getOldID() ) );
1393
1394                 if ( $this->section == 'new' ) {
1395                         $this->showSummaryInput( true, $this->summary );
1396                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1397                 }
1398
1399                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1400
1401                 $wgOut->addHTML( $toolbar );
1402
1403                 if ( $this->isConflict ) {
1404                         // In an edit conflict bypass the overrideable content form method
1405                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1406                         // resolved between page source edits and custom ui edits using the
1407                         // custom edit ui.
1408                         $this->showTextbox1( null, $this->getContent() );
1409                 } else {
1410                         $this->showContentForm();
1411                 }
1412
1413                 $wgOut->addHTML( $this->editFormTextAfterContent );
1414
1415                 $wgOut->addWikiText( $this->getCopywarn() );
1416                 if ( isset($this->editFormTextAfterWarn) && $this->editFormTextAfterWarn !== '' )
1417                         $wgOut->addHTML( $this->editFormTextAfterWarn );
1418
1419                 $this->showStandardInputs();
1420
1421                 $this->showFormAfterText();
1422
1423                 $this->showTosSummary();
1424                 $this->showEditTools();
1425
1426                 $wgOut->addHTML( <<<HTML
1427 {$this->editFormTextAfterTools}
1428 <div class='templatesUsed'>
1429 {$formattedtemplates}
1430 </div>
1431 <div class='hiddencats'>
1432 {$formattedhiddencats}
1433 </div>
1434 HTML
1435 );
1436
1437                 if ( $this->isConflict )
1438                         $this->showConflict();
1439
1440                 $wgOut->addHTML( $this->editFormTextBottom );
1441                 $wgOut->addHTML( "</form>\n" );
1442                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1443                         $this->displayPreviewArea( $previewOutput, false );
1444                 }
1445
1446                 wfProfileOut( __METHOD__ );
1447         }
1448
1449         protected function showHeader() {
1450                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1451                 if ( $this->isConflict ) {
1452                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1453                         $this->edittime = $this->mArticle->getTimestamp();
1454                 } else {
1455                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1456                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1457                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1458                                 // Someone is welcome to try refactoring though
1459                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1460                                 return false;
1461                         }
1462
1463                         if ( $this->section != '' && $this->section != 'new' ) {
1464                                 $matches = array();
1465                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1466                                         preg_match( "/^(=+)(.+)\\1/mi", $this->textbox1, $matches );
1467                                         if ( !empty( $matches[2] ) ) {
1468                                                 global $wgParser;
1469                                                 $this->summary = "/* " .
1470                                                         $wgParser->stripSectionName(trim($matches[2])) .
1471                                                         " */ ";
1472                                         }
1473                                 }
1474                         }
1475
1476                         if ( $this->missingComment ) {
1477                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1478                         }
1479
1480                         if ( $this->missingSummary && $this->section != 'new' ) {
1481                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1482                         }
1483
1484                         if ( $this->missingSummary && $this->section == 'new' ) {
1485                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1486                         }
1487
1488                         if ( $this->hookError !== '' ) {
1489                                 $wgOut->addWikiText( $this->hookError );
1490                         }
1491
1492                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1493                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1494                         }
1495
1496                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1497                         // Let sysop know that this will make private content public if saved
1498
1499                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1500                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1501                                 } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1502                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1503                                 }
1504
1505                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1506                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1507                                         $wgOut->addWikiMsg( 'editingold' );
1508                                 }
1509                         }
1510                 }
1511
1512                 if ( wfReadOnly() ) {
1513                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1514                 } elseif ( $wgUser->isAnon() ) {
1515                         if ( $this->formtype != 'preview' ) {
1516                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1517                         } else {
1518                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1519                         }
1520                 } else {
1521                         if ( $this->isCssJsSubpage ) {
1522                                 # Check the skin exists
1523                                 if ( $this->isWrongCaseCssJsPage ) {
1524                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->getContextTitle()->getSkinFromCssJsSubpage() ) );
1525                                 }
1526                                 if ( $this->formtype !== 'preview' ) {
1527                                         if ( $this->isCssSubpage )
1528                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
1529                                         if ( $this->isJsSubpage )
1530                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
1531                                 }
1532                         }
1533                 }
1534
1535                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1536                         # Is the title semi-protected?
1537                         if ( $this->mTitle->isSemiProtected() ) {
1538                                 $noticeMsg = 'semiprotectedpagewarning';
1539                         } else {
1540                                 # Then it must be protected based on static groups (regular)
1541                                 $noticeMsg = 'protectedpagewarning';
1542                         }
1543                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '',
1544                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
1545                 }
1546                 if ( $this->mTitle->isCascadeProtected() ) {
1547                         # Is this page under cascading protection from some source pages?
1548                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1549                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
1550                         $cascadeSourcesCount = count( $cascadeSources );
1551                         if ( $cascadeSourcesCount > 0 ) {
1552                                 # Explain, and list the titles responsible
1553                                 foreach( $cascadeSources as $page ) {
1554                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1555                                 }
1556                         }
1557                         $notice .= '</div>';
1558                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1559                 }
1560                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1561                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '',
1562                                 array(  'lim' => 1,
1563                                         'showIfEmpty' => false,
1564                                         'msgKey' => array( 'titleprotectedwarning' ),
1565                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
1566                 }
1567
1568                 if ( $this->kblength === false ) {
1569                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1570                 }
1571
1572                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1573                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
1574                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
1575                 } else {
1576                         if( !wfMessage('longpage-hint')->isDisabled() ) {
1577                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
1578                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
1579                                 );
1580                         }
1581                 }
1582         }
1583
1584         /**
1585          * Standard summary input and label (wgSummary), abstracted so EditPage
1586          * subclasses may reorganize the form.
1587          * Note that you do not need to worry about the label's for=, it will be
1588          * inferred by the id given to the input. You can remove them both by
1589          * passing array( 'id' => false ) to $userInputAttrs.
1590          *
1591          * @param $summary The value of the summary input
1592          * @param $labelText The html to place inside the label
1593          * @param $inputAttrs An array of attrs to use on the input
1594          * @param $spanLabelAttrs An array of attrs to use on the span inside the label
1595          *
1596          * @return array An array in the format array( $label, $input )
1597          */
1598         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
1599                 global $wgUser;
1600                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
1601                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
1602                         'id' => 'wpSummary',
1603                         'maxlength' => '200',
1604                         'tabindex' => '1',
1605                         'size' => 60,
1606                         'spellcheck' => 'true',
1607                 ) + $wgUser->getSkin()->tooltipAndAccessKeyAttribs( 'summary' );
1608
1609                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
1610                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
1611                         'id' => "wpSummaryLabel"
1612                 );
1613
1614                 $label = null;
1615                 if ( $labelText ) {
1616                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
1617                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
1618                 }
1619
1620                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
1621
1622                 return array( $label, $input );
1623         }
1624
1625         /**
1626          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1627          *                          up top, or false if this is the comment summary
1628          *                          down below the textarea
1629          * @param $summary String: The text of the summary to display
1630          * @return String
1631          */
1632         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
1633                 global $wgOut, $wgContLang;
1634                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1635                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1636                 if ( $isSubjectPreview ) {
1637                         if ( $this->nosummary )
1638                                 return;
1639                 } else {
1640                         if ( !$this->mShowSummaryField )
1641                                 return;
1642                 }
1643                 $summary = $wgContLang->recodeForEdit( $summary );
1644                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
1645                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
1646                 $wgOut->addHTML("{$label} {$input}");
1647         }
1648
1649         /**
1650          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1651          *                          up top, or false if this is the comment summary
1652          *                          down below the textarea
1653          * @param $summary String: the text of the summary to display
1654          * @return String
1655          */
1656         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
1657                 if ( !$summary || ( !$this->preview && !$this->diff ) )
1658                         return "";
1659
1660                 global $wgParser, $wgUser;
1661                 $sk = $wgUser->getSkin();
1662
1663                 if ( $isSubjectPreview )
1664                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
1665
1666                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
1667
1668                 $summary = wfMsgExt( $message, 'parseinline' ) . $sk->commentBlock( $summary, $this->mTitle, $isSubjectPreview );
1669                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
1670         }
1671
1672         protected function showFormBeforeText() {
1673                 global $wgOut;
1674                 $section = htmlspecialchars( $this->section );
1675                 $wgOut->addHTML( <<<HTML
1676 <input type='hidden' value="{$section}" name="wpSection" />
1677 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
1678 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
1679 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
1680
1681 HTML
1682                 );
1683                 if ( !$this->checkUnicodeCompliantBrowser() )
1684                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
1685         }
1686
1687         protected function showFormAfterText() {
1688                 global $wgOut, $wgUser;
1689                 /**
1690                  * To make it harder for someone to slip a user a page
1691                  * which submits an edit form to the wiki without their
1692                  * knowledge, a random token is associated with the login
1693                  * session. If it's not passed back with the submission,
1694                  * we won't save the page, or render user JavaScript and
1695                  * CSS previews.
1696                  *
1697                  * For anon editors, who may not have a session, we just
1698                  * include the constant suffix to prevent editing from
1699                  * broken text-mangling proxies.
1700                  */
1701                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->editToken() ) . "\n" );
1702         }
1703
1704         /**
1705          * Subpage overridable method for printing the form for page content editing
1706          * By default this simply outputs wpTextbox1
1707          * Subclasses can override this to provide a custom UI for editing;
1708          * be it a form, or simply wpTextbox1 with a modified content that will be
1709          * reverse modified when extracted from the post data.
1710          * Note that this is basically the inverse for importContentFormData
1711          */
1712         protected function showContentForm() {
1713                 $this->showTextbox1();
1714         }
1715
1716         /**
1717          * Method to output wpTextbox1
1718          * The $textoverride method can be used by subclasses overriding showContentForm
1719          * to pass back to this method.
1720          *
1721          * @param $customAttribs An array of html attributes to use in the textarea
1722          * @param $textoverride String: optional text to override $this->textarea1 with
1723          */
1724         protected function showTextbox1($customAttribs = null, $textoverride = null) {
1725                 $classes = array(); // Textarea CSS
1726                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1727                         # Is the title semi-protected?
1728                         if ( $this->mTitle->isSemiProtected() ) {
1729                                 $classes[] = 'mw-textarea-sprotected';
1730                         } else {
1731                                 # Then it must be protected based on static groups (regular)
1732                                 $classes[] = 'mw-textarea-protected';
1733                         }
1734                         # Is the title cascade-protected?
1735                         if ( $this->mTitle->isCascadeProtected() ) {
1736                                 $classes[] = 'mw-textarea-cprotected';
1737                         }
1738                 }
1739                 $attribs = array( 'tabindex' => 1 );
1740                 if ( is_array($customAttribs) )
1741                         $attribs += $customAttribs;
1742
1743                 if ( $this->wasDeletedSinceLastEdit() )
1744                         $attribs['type'] = 'hidden';
1745                 if ( !empty( $classes ) ) {
1746                         if ( isset($attribs['class']) )
1747                                 $classes[] = $attribs['class'];
1748                         $attribs['class'] = implode( ' ', $classes );
1749                 }
1750
1751                 $this->showTextbox( isset($textoverride) ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
1752         }
1753
1754         protected function showTextbox2() {
1755                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
1756         }
1757
1758         protected function showTextbox( $content, $name, $customAttribs = array() ) {
1759                 global $wgOut, $wgUser;
1760
1761                 $wikitext = $this->safeUnicodeOutput( $content );
1762                 if ( $wikitext !== '' ) {
1763                         // Ensure there's a newline at the end, otherwise adding lines
1764                         // is awkward.
1765                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1766                         // mode will show an extra newline. A bit annoying.
1767                         $wikitext .= "\n";
1768                 }
1769
1770                 $attribs = $customAttribs + array(
1771                         'accesskey' => ',',
1772                         'id'   => $name,
1773                         'cols' => $wgUser->getIntOption( 'cols' ),
1774                         'rows' => $wgUser->getIntOption( 'rows' ),
1775                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
1776                 );
1777
1778                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
1779         }
1780
1781         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
1782                 global $wgOut;
1783                 $classes = array();
1784                 if ( $isOnTop )
1785                         $classes[] = 'ontop';
1786
1787                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
1788
1789                 if ( $this->formtype != 'preview' )
1790                         $attribs['style'] = 'display: none;';
1791
1792                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
1793
1794                 if ( $this->formtype == 'preview' ) {
1795                         $this->showPreview( $previewOutput );
1796                 }
1797
1798                 $wgOut->addHTML( '</div>' );
1799
1800                 if ( $this->formtype == 'diff') {
1801                         $this->showDiff();
1802                 }
1803         }
1804
1805         /**
1806          * Append preview output to $wgOut.
1807          * Includes category rendering if this is a category page.
1808          *
1809          * @param $text String: the HTML to be output for the preview.
1810          */
1811         protected function showPreview( $text ) {
1812                 global $wgOut;
1813                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
1814                         $this->mArticle->openShowCategory();
1815                 }
1816                 # This hook seems slightly odd here, but makes things more
1817                 # consistent for extensions.
1818                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1819                 $wgOut->addHTML( $text );
1820                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
1821                         $this->mArticle->closeShowCategory();
1822                 }
1823         }
1824
1825         /**
1826          * Give a chance for site and per-namespace customizations of
1827          * terms of service summary link that might exist separately
1828          * from the copyright notice.
1829          *
1830          * This will display between the save button and the edit tools,
1831          * so should remain short!
1832          */
1833         protected function showTosSummary() {
1834                 $msg = 'editpage-tos-summary';
1835                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
1836                 if( !wfMessage( $msg )->isDisabled() ) {
1837                         global $wgOut;
1838                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
1839                         $wgOut->addWikiMsgArray( $msg, array() );
1840                         $wgOut->addHTML( '</div>' );
1841                 }
1842         }
1843
1844         protected function showEditTools() {
1845                 global $wgOut;
1846                 $wgOut->addHTML( '<div class="mw-editTools">' );
1847                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1848                 $wgOut->addHTML( '</div>' );
1849         }
1850
1851         protected function getCopywarn() {
1852                 global $wgRightsText;
1853                 if ( $wgRightsText ) {
1854                         $copywarnMsg = array( 'copyrightwarning',
1855                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1856                                 $wgRightsText );
1857                 } else {
1858                         $copywarnMsg = array( 'copyrightwarning2',
1859                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1860                 }
1861                 // Allow for site and per-namespace customization of contribution/copyright notice.
1862                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
1863
1864                 return "<div id=\"editpage-copywarn\">\n" .
1865                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
1866         }
1867
1868         protected function showStandardInputs( &$tabindex = 2 ) {
1869                 global $wgOut, $wgUser;
1870                 $wgOut->addHTML( "<div class='editOptions'>\n" );
1871
1872                 if ( $this->section != 'new' ) {
1873                         $this->showSummaryInput( false, $this->summary );
1874                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
1875                 }
1876
1877                 $checkboxes = $this->getCheckboxes( $tabindex, $wgUser->getSkin(),
1878                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1879                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
1880                 $wgOut->addHTML( "<div class='editButtons'>\n" );
1881                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
1882
1883                 $cancel = $this->getCancelLink();
1884                 $separator = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1885                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
1886                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1887                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1888                         htmlspecialchars( wfMsg( 'newwindow' ) );
1889                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>\n" );
1890                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
1891         }
1892
1893         /**
1894          * Show an edit conflict. textbox1 is already shown in showEditForm().
1895          * If you want to use another entry point to this function, be careful.
1896          */
1897         protected function showConflict() {
1898                 global $wgOut;
1899                 $this->textbox2 = $this->textbox1;
1900                 $this->textbox1 = $this->getContent();
1901                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1902                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
1903
1904                         $de = new DifferenceEngine( $this->mTitle );
1905                         $de->setText( $this->textbox2, $this->textbox1 );
1906                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1907
1908                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
1909                         $this->showTextbox2();
1910                 }
1911         }
1912
1913         protected function getLastDelete() {
1914                 $dbr = wfGetDB( DB_SLAVE );
1915                 $data = $dbr->selectRow(
1916                         array( 'logging', 'user' ),
1917                         array( 'log_type',
1918                                    'log_action',
1919                                    'log_timestamp',
1920                                    'log_user',
1921                                    'log_namespace',
1922                                    'log_title',
1923                                    'log_comment',
1924                                    'log_params',
1925                                    'log_deleted',
1926                                    'user_name' ),
1927                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1928                                    'log_title' => $this->mTitle->getDBkey(),
1929                                    'log_type' => 'delete',
1930                                    'log_action' => 'delete',
1931                                    'user_id=log_user' ),
1932                         __METHOD__,
1933                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
1934                 );
1935                 // Quick paranoid permission checks...
1936                 if( is_object( $data ) ) {
1937                         if( $data->log_deleted & LogPage::DELETED_USER )
1938                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
1939                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
1940                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
1941                 }
1942                 return $data;
1943         }
1944
1945         /**
1946          * Get the rendered text for previewing.
1947          * @return string
1948          */
1949         function getPreviewText() {
1950                 global $wgOut, $wgUser, $wgParser;
1951
1952                 wfProfileIn( __METHOD__ );
1953
1954                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1955                         if ( $this->mTokenOkExceptSuffix ) {
1956                                 $note = wfMsg( 'token_suffix_mismatch' );
1957                         } else {
1958                                 $note = wfMsg( 'session_fail_preview' );
1959                         }
1960                 } else if ( $this->incompleteForm ) {
1961                         $note = wfMsg( 'edit_form_incomplete' );
1962                 } else {
1963                         $note = wfMsg( 'previewnote' );
1964                 }
1965
1966                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1967                 $parserOptions->setEditSection( false );
1968                 $parserOptions->setIsPreview( true );
1969                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
1970
1971                 global $wgRawHtml;
1972                 if ( $wgRawHtml && !$this->mTokenOk ) {
1973                         // Could be an offsite preview attempt. This is very unsafe if
1974                         // HTML is enabled, as it could be an attack.
1975                         $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
1976                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1977                         wfProfileOut( __METHOD__ );
1978                         return $parsedNote;
1979                 }
1980
1981                 # don't parse user css/js, show message about preview
1982                 # 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?
1983
1984                 if ( $this->isCssJsSubpage || $this->mTitle->isCssOrJsPage() ) {
1985                         $level = 'user';
1986                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1987                                 $level = 'site';
1988                         }
1989
1990                         # Used messages to make sure grep find them:
1991                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
1992                         if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
1993                                 $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
1994                                 $class = "mw-code mw-css";
1995                         } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
1996                                 $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
1997                                 $class = "mw-code mw-js";
1998                         } else {
1999                                 throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2000                         }
2001
2002                         $parserOptions->setTidy( true );
2003                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2004                         $previewHTML = $parserOutput->mText;
2005                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2006                 } else {
2007                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2008                         if ( $rt ) {
2009                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2010                         } else {
2011                                 $toparse = $this->textbox1;
2012
2013                                 # If we're adding a comment, we need to show the
2014                                 # summary as the headline
2015                                 if ( $this->section == "new" && $this->summary != "" ) {
2016                                         $toparse = "== {$this->summary} ==\n\n" . $toparse;
2017                                 }
2018
2019                                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2020
2021                                 // Parse mediawiki messages with correct target language
2022                                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
2023                                         list( /* $unused */, $lang ) = MessageCache::singleton()->figureMessage( $this->mTitle->getText() );
2024                                         $obj = wfGetLangObj( $lang );
2025                                         $parserOptions->setTargetLanguage( $obj );
2026                                 }
2027
2028                                 $parserOptions->setTidy( true );
2029                                 $parserOptions->enableLimitReport();
2030                                 $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
2031                                         $this->mTitle, $parserOptions );
2032
2033                                 $previewHTML = $parserOutput->getText();
2034                                 $this->mParserOutput = $parserOutput;
2035                                 $wgOut->addParserOutputNoText( $parserOutput );
2036
2037                                 if ( count( $parserOutput->getWarnings() ) ) {
2038                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2039                                 }
2040                         }
2041                 }
2042
2043                 if( $this->isConflict ) {
2044                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2045                 } else {
2046                         $conflict = '<hr />';
2047                 }
2048
2049                 $previewhead = "<div class='previewnote'>\n" .
2050                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2051                         $wgOut->parse( $note ) . $conflict . "</div>\n";
2052
2053                 wfProfileOut( __METHOD__ );
2054                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2055         }
2056
2057         /**
2058          * @return Array
2059          */
2060         function getTemplates() {
2061                 if ( $this->preview || $this->section != '' ) {
2062                         $templates = array();
2063                         if ( !isset( $this->mParserOutput ) ) {
2064                                 return $templates;
2065                         }
2066                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2067                                 foreach( array_keys( $template ) as $dbk ) {
2068                                         $templates[] = Title::makeTitle($ns, $dbk);
2069                                 }
2070                         }
2071                         return $templates;
2072                 } else {
2073                         return $this->mArticle->getUsedTemplates();
2074                 }
2075         }
2076
2077         /**
2078          * Call the stock "user is blocked" page
2079          */
2080         function blockedPage() {
2081                 global $wgOut;
2082                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
2083
2084                 # If the user made changes, preserve them when showing the markup
2085                 # (This happens when a user is blocked during edit, for instance)
2086                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
2087                 if ( $first ) {
2088                         $source = $this->mTitle->exists() ? $this->getContent() : false;
2089                 } else {
2090                         $source = $this->textbox1;
2091                 }
2092
2093                 # Spit out the source or the user's modified version
2094                 if ( $source !== false ) {
2095                         $wgOut->addHTML( '<hr />' );
2096                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
2097                         $this->showTextbox1( array( 'readonly' ), $source );
2098                 }
2099         }
2100
2101         /**
2102          * Produce the stock "please login to edit pages" page
2103          */
2104         function userNotLoggedInPage() {
2105                 global $wgUser, $wgOut;
2106                 $skin = $wgUser->getSkin();
2107
2108                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
2109                 $loginLink = $skin->link(
2110                         $loginTitle,
2111                         wfMsgHtml( 'loginreqlink' ),
2112                         array(),
2113                         array( 'returnto' => $this->getContextTitle()->getPrefixedText() ),
2114                         array( 'known', 'noclasses' )
2115                 );
2116
2117                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
2118                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2119                 $wgOut->setArticleRelated( false );
2120
2121                 $wgOut->addWikiMsgArray( 'whitelistedittext', array( $loginLink ), array( 'replaceafter' ) );
2122                 $wgOut->returnToMain( false, $this->getContextTitle() );
2123         }
2124
2125         /**
2126          * Creates a basic error page which informs the user that
2127          * they have attempted to edit a nonexistent section.
2128          */
2129         function noSuchSectionPage() {
2130                 global $wgOut;
2131
2132                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
2133                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2134                 $wgOut->setArticleRelated( false );
2135
2136                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
2137                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
2138                 $wgOut->addHTML( $res );
2139
2140                 $wgOut->returnToMain( false, $this->mTitle );
2141         }
2142
2143         /**
2144          * Produce the stock "your edit contains spam" page
2145          *
2146          * @param $match Text which triggered one or more filters
2147          * @deprecated since 1.17 Use method spamPageWithContent() instead
2148          */
2149         static function spamPage( $match = false ) {
2150                 global $wgOut, $wgTitle;
2151
2152                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
2153                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2154                 $wgOut->setArticleRelated( false );
2155
2156                 $wgOut->addHTML( '<div id="spamprotected">' );
2157                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2158                 if ( $match ) {
2159                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2160                 }
2161                 $wgOut->addHTML( '</div>' );
2162
2163                 $wgOut->returnToMain( false, $wgTitle );
2164         }
2165
2166         /**
2167          * Show "your edit contains spam" page with your diff and text
2168          *
2169          * @param $match Text which triggered one or more filters
2170          */
2171         public function spamPageWithContent( $match = false ) {
2172                 global $wgOut;
2173                 $this->textbox2 = $this->textbox1;
2174
2175                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
2176                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2177                 $wgOut->setArticleRelated( false );
2178
2179                 $wgOut->addHTML( '<div id="spamprotected">' );
2180                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2181                 if ( $match ) {
2182                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2183                 }
2184                 $wgOut->addHTML( '</div>' );
2185
2186                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2187                 $de = new DifferenceEngine( $this->mTitle );
2188                 $de->setText( $this->getContent(), $this->textbox2 );
2189                 $de->showDiff( wfMsg( "storedversion" ), wfMsg( "yourtext" ) );
2190
2191                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2192                 $this->showTextbox2();
2193
2194                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
2195         }
2196
2197
2198         /**
2199          * @private
2200          * @todo document
2201          */
2202         function mergeChangesInto( &$editText ){
2203                 wfProfileIn( __METHOD__ );
2204
2205                 $db = wfGetDB( DB_MASTER );
2206
2207                 // This is the revision the editor started from
2208                 $baseRevision = $this->getBaseRevision();
2209                 if ( is_null( $baseRevision ) ) {
2210                         wfProfileOut( __METHOD__ );
2211                         return false;
2212                 }
2213                 $baseText = $baseRevision->getText();
2214
2215                 // The current state, we want to merge updates into it
2216                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2217                 if ( is_null( $currentRevision ) ) {
2218                         wfProfileOut( __METHOD__ );
2219                         return false;
2220                 }
2221                 $currentText = $currentRevision->getText();
2222
2223                 $result = '';
2224                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
2225                         $editText = $result;
2226                         wfProfileOut( __METHOD__ );
2227                         return true;
2228                 } else {
2229                         wfProfileOut( __METHOD__ );
2230                         return false;
2231                 }
2232         }
2233
2234         /**
2235          * Check if the browser is on a blacklist of user-agents known to
2236          * mangle UTF-8 data on form submission. Returns true if Unicode
2237          * should make it through, false if it's known to be a problem.
2238          * @return bool
2239          * @private
2240          */
2241         function checkUnicodeCompliantBrowser() {
2242                 global $wgBrowserBlackList;
2243                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2244                         // No User-Agent header sent? Trust it by default...
2245                         return true;
2246                 }
2247                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2248                 foreach ( $wgBrowserBlackList as $browser ) {
2249                         if ( preg_match($browser, $currentbrowser) ) {
2250                                 return false;
2251                         }
2252                 }
2253                 return true;
2254         }
2255
2256         /**
2257          * Format an anchor fragment as it would appear for a given section name
2258          * @param $text String
2259          * @return String
2260          * @private
2261          */
2262         function sectionAnchor( $text ) {
2263                 global $wgParser;
2264                 return $wgParser->guessSectionNameFromWikiText( $text );
2265         }
2266
2267         /**
2268          * Shows a bulletin board style toolbar for common editing functions.
2269          * It can be disabled in the user preferences.
2270          * The necessary JavaScript code can be found in skins/common/edit.js.
2271          *
2272          * @return string
2273          */
2274         static function getEditToolbar() {
2275                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2276                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2277
2278                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2279
2280                 /**
2281                  * $toolarray is an array of arrays each of which includes the
2282                  * filename of the button image (without path), the opening
2283                  * tag, the closing tag, optionally a sample text that is
2284                  * inserted between the two when no selection is highlighted
2285                  * and an option to select which switches the automatic
2286                  * selection of inserted text (default is true, see
2287                  * mw-editbutton-image).  The tip text is shown when the user
2288                  * moves the mouse over the button.
2289                  *
2290                  * Also here: accesskeys (key), which are not used yet until
2291                  * someone can figure out a way to make them work in
2292                  * IE. However, we should make sure these keys are not defined
2293                  * on the edit page.
2294                  */
2295                 $toolarray = array(
2296                         array(
2297                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2298                                 'id'     => 'mw-editbutton-bold',
2299                                 'open'   => '\'\'\'',
2300                                 'close'  => '\'\'\'',
2301                                 'sample' => wfMsg( 'bold_sample' ),
2302                                 'tip'    => wfMsg( 'bold_tip' ),
2303                                 'key'    => 'B'
2304                         ),
2305                         array(
2306                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2307                                 'id'     => 'mw-editbutton-italic',
2308                                 'open'   => '\'\'',
2309                                 'close'  => '\'\'',
2310                                 'sample' => wfMsg( 'italic_sample' ),
2311                                 'tip'    => wfMsg( 'italic_tip' ),
2312                                 'key'    => 'I'
2313                         ),
2314                         array(
2315                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2316                                 'id'     => 'mw-editbutton-link',
2317                                 'open'   => '[[',
2318                                 'close'  => ']]',
2319                                 'sample' => wfMsg( 'link_sample' ),
2320                                 'tip'    => wfMsg( 'link_tip' ),
2321                                 'key'    => 'L'
2322                         ),
2323                         array(
2324                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2325                                 'id'     => 'mw-editbutton-extlink',
2326                                 'open'   => '[',
2327                                 'close'  => ']',
2328                                 'sample' => wfMsg( 'extlink_sample' ),
2329                                 'tip'    => wfMsg( 'extlink_tip' ),
2330                                 'key'    => 'X'
2331                         ),
2332                         array(
2333                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2334                                 'id'     => 'mw-editbutton-headline',
2335                                 'open'   => "\n== ",
2336                                 'close'  => " ==\n",
2337                                 'sample' => wfMsg( 'headline_sample' ),
2338                                 'tip'    => wfMsg( 'headline_tip' ),
2339                                 'key'    => 'H'
2340                         ),
2341                         $imagesAvailable ? array(
2342                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2343                                 'id'     => 'mw-editbutton-image',
2344                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2345                                 'close'  => ']]',
2346                                 'sample' => wfMsg( 'image_sample' ),
2347                                 'tip'    => wfMsg( 'image_tip' ),
2348                                 'key'    => 'D',
2349                                 'select' => true
2350                         ) : false,
2351                         $imagesAvailable ? array(
2352                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2353                                 'id'     => 'mw-editbutton-media',
2354                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2355                                 'close'  => ']]',
2356                                 'sample' => wfMsg( 'media_sample' ),
2357                                 'tip'    => wfMsg( 'media_tip' ),
2358                                 'key'    => 'M'
2359                         ) : false,
2360                         $wgUseTeX ?     array(
2361                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2362                                 'id'     => 'mw-editbutton-math',
2363                                 'open'   => "<math>",
2364                                 'close'  => "</math>",
2365                                 'sample' => wfMsg( 'math_sample' ),
2366                                 'tip'    => wfMsg( 'math_tip' ),
2367                                 'key'    => 'C'
2368                         ) : false,
2369                         array(
2370                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2371                                 'id'     => 'mw-editbutton-nowiki',
2372                                 'open'   => "<nowiki>",
2373                                 'close'  => "</nowiki>",
2374                                 'sample' => wfMsg( 'nowiki_sample' ),
2375                                 'tip'    => wfMsg( 'nowiki_tip' ),
2376                                 'key'    => 'N'
2377                         ),
2378                         array(
2379                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2380                                 'id'     => 'mw-editbutton-signature',
2381                                 'open'   => '--~~~~',
2382                                 'close'  => '',
2383                                 'sample' => '',
2384                                 'tip'    => wfMsg( 'sig_tip' ),
2385                                 'key'    => 'Y'
2386                         ),
2387                         array(
2388                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2389                                 'id'     => 'mw-editbutton-hr',
2390                                 'open'   => "\n----\n",
2391                                 'close'  => '',
2392                                 'sample' => '',
2393                                 'tip'    => wfMsg( 'hr_tip' ),
2394                                 'key'    => 'R'
2395                         )
2396                 );
2397                 $toolbar = "<div id='toolbar'>\n";
2398
2399                 $script = '';
2400                 foreach ( $toolarray as $tool ) {
2401                         if ( !$tool ) {
2402                                 continue;
2403                         }
2404
2405                         if( !isset( $tool['select'] ) ) {
2406                           $tool['select'] = true;
2407                         }
2408
2409                         $params = array(
2410                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2411                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2412                                 // Older browsers show a "speedtip" type message only for ALT.
2413                                 // Ideally these should be different, realistically they
2414                                 // probably don't need to be.
2415                                 $tip = $tool['tip'],
2416                                 $open = $tool['open'],
2417                                 $close = $tool['close'],
2418                                 $sample = $tool['sample'],
2419                                 $cssId = $tool['id'],
2420                         );
2421
2422                         $paramList = implode( ',',
2423                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
2424                         $script .= "mw.toolbar.addButton($paramList);\n";
2425                 }
2426                 $wgOut->addScript( Html::inlineScript(
2427                         "if ( window.mediaWiki ) {{$script}}"
2428                 ) );
2429
2430                 $toolbar .= "\n</div>";
2431
2432                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2433
2434                 return $toolbar;
2435         }
2436
2437         /**
2438          * Returns an array of html code of the following checkboxes:
2439          * minor and watch
2440          *
2441          * @param $tabindex Current tabindex
2442          * @param $skin Skin object
2443          * @param $checked Array of checkbox => bool, where bool indicates the checked
2444          *                 status of the checkbox
2445          *
2446          * @return array
2447          */
2448         public function getCheckboxes( &$tabindex, $skin, $checked ) {
2449                 global $wgUser;
2450
2451                 $checkboxes = array();
2452
2453                 // don't show the minor edit checkbox if it's a new page or section
2454                 if ( !$this->isNew ) {
2455                         $checkboxes['minor'] = '';
2456                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2457                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2458                                 $attribs = array(
2459                                         'tabindex'  => ++$tabindex,
2460                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2461                                         'id'        => 'wpMinoredit',
2462                                 );
2463                                 $checkboxes['minor'] =
2464                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2465                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2466                                         Xml::expandAttributes( array( 'title' => $skin->titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2467                                         ">{$minorLabel}</label>";
2468                         }
2469                 }
2470
2471                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2472                 $checkboxes['watch'] = '';
2473                 if ( $wgUser->isLoggedIn() ) {
2474                         $attribs = array(
2475                                 'tabindex'  => ++$tabindex,
2476                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2477                                 'id'        => 'wpWatchthis',
2478                         );
2479                         $checkboxes['watch'] =
2480                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2481                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2482                                 Xml::expandAttributes( array( 'title' => $skin->titleAttrib( 'watch', 'withaccess' ) ) ) .
2483                                 ">{$watchLabel}</label>";
2484                 }
2485                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2486                 return $checkboxes;
2487         }
2488
2489         /**
2490          * Returns an array of html code of the following buttons:
2491          * save, diff, preview and live
2492          *
2493          * @param $tabindex Current tabindex
2494          *
2495          * @return array
2496          */
2497         public function getEditButtons( &$tabindex ) {
2498                 $buttons = array();
2499
2500                 $temp = array(
2501                         'id'        => 'wpSave',
2502                         'name'      => 'wpSave',
2503                         'type'      => 'submit',
2504                         'tabindex'  => ++$tabindex,
2505                         'value'     => wfMsg( 'savearticle' ),
2506                         'accesskey' => wfMsg( 'accesskey-save' ),
2507                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2508                 );
2509                 $buttons['save'] = Xml::element('input', $temp, '');
2510
2511                 ++$tabindex; // use the same for preview and live preview
2512                 $temp = array(
2513                         'id'        => 'wpPreview',
2514                         'name'      => 'wpPreview',
2515                         'type'      => 'submit',
2516                         'tabindex'  => $tabindex,
2517                         'value'     => wfMsg( 'showpreview' ),
2518                         'accesskey' => wfMsg( 'accesskey-preview' ),
2519                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2520                 );
2521                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2522                 $buttons['live'] = '';
2523
2524                 $temp = array(
2525                         'id'        => 'wpDiff',
2526                         'name'      => 'wpDiff',
2527                         'type'      => 'submit',
2528                         'tabindex'  => ++$tabindex,
2529                         'value'     => wfMsg( 'showdiff' ),
2530                         'accesskey' => wfMsg( 'accesskey-diff' ),
2531                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2532                 );
2533                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2534
2535                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2536                 return $buttons;
2537         }
2538
2539         /**
2540          * Output preview text only. This can be sucked into the edit page
2541          * via JavaScript, and saves the server time rendering the skin as
2542          * well as theoretically being more robust on the client (doesn't
2543          * disturb the edit box's undo history, won't eat your text on
2544          * failure, etc).
2545          *
2546          * @todo This doesn't include category or interlanguage links.
2547          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2548          *       or something...</s> that might also require more skin
2549          *       initialization, so check whether that's a problem.
2550          */
2551         function livePreview() {
2552                 global $wgOut;
2553                 $wgOut->disable();
2554                 header( 'Content-type: text/xml; charset=utf-8' );
2555                 header( 'Cache-control: no-cache' );
2556
2557                 $previewText = $this->getPreviewText();
2558                 #$categories = $skin->getCategoryLinks();
2559
2560                 $s =
2561                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2562                 Xml::tags( 'livepreview', null,
2563                         Xml::element( 'preview', null, $previewText )
2564                         #.      Xml::element( 'category', null, $categories )
2565                 );
2566                 echo $s;
2567         }
2568
2569
2570         public function getCancelLink() {
2571                 global $wgUser;
2572
2573                 $cancelParams = array();
2574                 if ( !$this->isConflict && $this->mArticle->getOldID() > 0 ) {
2575                         $cancelParams['oldid'] = $this->mArticle->getOldID();
2576                 }
2577
2578                 return $wgUser->getSkin()->link(
2579                         $this->getContextTitle(),
2580                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2581                         array( 'id' => 'mw-editform-cancel' ),
2582                         $cancelParams,
2583                         array( 'known', 'noclasses' )
2584                 );
2585         }
2586
2587         /**
2588          * Get a diff between the current contents of the edit box and the
2589          * version of the page we're editing from.
2590          *
2591          * If this is a section edit, we'll replace the section as for final
2592          * save and then make a comparison.
2593          */
2594         function showDiff() {
2595                 $oldtext = $this->mArticle->fetchContent();
2596                 $newtext = $this->mArticle->replaceSection(
2597                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2598
2599                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2600
2601                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2602                 $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2603                 $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2604                 if ( $oldtext !== false  || $newtext != '' ) {
2605                         $de = new DifferenceEngine( $this->mTitle );
2606                         $de->setText( $oldtext, $newtext );
2607                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2608                         $de->showDiffStyle();
2609                 } else {
2610                         $difftext = '';
2611                 }
2612
2613                 global $wgOut;
2614                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2615         }
2616
2617         /**
2618          * Filter an input field through a Unicode de-armoring process if it
2619          * came from an old browser with known broken Unicode editing issues.
2620          *
2621          * @param $request WebRequest
2622          * @param $field String
2623          * @return String
2624          * @private
2625          */
2626         function safeUnicodeInput( $request, $field ) {
2627                 $text = rtrim( $request->getText( $field ) );
2628                 return $request->getBool( 'safemode' )
2629                         ? $this->unmakesafe( $text )
2630                         : $text;
2631         }
2632
2633         /**
2634          * @param $request WebRequest
2635          * @param $text string
2636          * @return string
2637          */
2638         function safeUnicodeText( $request, $text ) {
2639                 $text = rtrim( $text );
2640                 return $request->getBool( 'safemode' )
2641                         ? $this->unmakesafe( $text )
2642                         : $text;
2643         }
2644
2645         /**
2646          * Filter an output field through a Unicode armoring process if it is
2647          * going to an old browser with known broken Unicode editing issues.
2648          *
2649          * @param $text String
2650          * @return String
2651          * @private
2652          */
2653         function safeUnicodeOutput( $text ) {
2654                 global $wgContLang;
2655                 $codedText = $wgContLang->recodeForEdit( $text );
2656                 return $this->checkUnicodeCompliantBrowser()
2657                         ? $codedText
2658                         : $this->makesafe( $codedText );
2659         }
2660
2661         /**
2662          * A number of web browsers are known to corrupt non-ASCII characters
2663          * in a UTF-8 text editing environment. To protect against this,
2664          * detected browsers will be served an armored version of the text,
2665          * with non-ASCII chars converted to numeric HTML character references.
2666          *
2667          * Preexisting such character references will have a 0 added to them
2668          * to ensure that round-trips do not alter the original data.
2669          *
2670          * @param $invalue String
2671          * @return String
2672          * @private
2673          */
2674         function makesafe( $invalue ) {
2675                 // Armor existing references for reversability.
2676                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2677
2678                 $bytesleft = 0;
2679                 $result = "";
2680                 $working = 0;
2681                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2682                         $bytevalue = ord( $invalue[$i] );
2683                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2684                                 $result .= chr( $bytevalue );
2685                                 $bytesleft = 0;
2686                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2687                                 $working = $working << 6;
2688                                 $working += ($bytevalue & 0x3F);
2689                                 $bytesleft--;
2690                                 if ( $bytesleft <= 0 ) {
2691                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2692                                 }
2693                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2694                                 $working = $bytevalue & 0x1F;
2695                                 $bytesleft = 1;
2696                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2697                                 $working = $bytevalue & 0x0F;
2698                                 $bytesleft = 2;
2699                         } else { //1111 0xxx
2700                                 $working = $bytevalue & 0x07;
2701                                 $bytesleft = 3;
2702                         }
2703                 }
2704                 return $result;
2705         }
2706
2707         /**
2708          * Reverse the previously applied transliteration of non-ASCII characters
2709          * back to UTF-8. Used to protect data from corruption by broken web browsers
2710          * as listed in $wgBrowserBlackList.
2711          *
2712          * @param $invalue String
2713          * @return String
2714          * @private
2715          */
2716         function unmakesafe( $invalue ) {
2717                 $result = "";
2718                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2719                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
2720                                 $i += 3;
2721                                 $hexstring = "";
2722                                 do {
2723                                         $hexstring .= $invalue[$i];
2724                                         $i++;
2725                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
2726
2727                                 // Do some sanity checks. These aren't needed for reversability,
2728                                 // but should help keep the breakage down if the editor
2729                                 // breaks one of the entities whilst editing.
2730                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
2731                                         $codepoint = hexdec($hexstring);
2732                                         $result .= codepointToUtf8( $codepoint );
2733                                 } else {
2734                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2735                                 }
2736                         } else {
2737                                 $result .= substr( $invalue, $i, 1 );
2738                         }
2739                 }
2740                 // reverse the transform that we made for reversability reasons.
2741                 return strtr( $result, array( "&#x0" => "&#x" ) );
2742         }
2743
2744         function noCreatePermission() {
2745                 global $wgOut;
2746                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2747                 $wgOut->addWikiMsg( 'nocreatetext' );
2748         }
2749
2750         /**
2751          * Attempt submission
2752          * @return bool false if output is done, true if the rest of the form should be displayed
2753          */
2754         function attemptSave() {
2755                 global $wgUser, $wgOut;
2756
2757                 $resultDetails = false;
2758                 # Allow bots to exempt some edits from bot flagging
2759                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
2760                 $value = $this->internalAttemptSave( $resultDetails, $bot );
2761
2762                 if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2763                         $this->didSave = true;
2764                 }
2765
2766                 switch ( $value ) {
2767                         case self::AS_HOOK_ERROR_EXPECTED:
2768                         case self::AS_CONTENT_TOO_BIG:
2769                         case self::AS_ARTICLE_WAS_DELETED:
2770                         case self::AS_CONFLICT_DETECTED:
2771                         case self::AS_SUMMARY_NEEDED:
2772                         case self::AS_TEXTBOX_EMPTY:
2773                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2774                         case self::AS_END:
2775                                 return true;
2776
2777                         case self::AS_HOOK_ERROR:
2778                         case self::AS_FILTERING:
2779                                 return false;
2780
2781                         case self::AS_SUCCESS_NEW_ARTICLE:
2782                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
2783                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) );
2784                                 return false;
2785
2786                         case self::AS_SUCCESS_UPDATE:
2787                                 $extraQuery = '';
2788                                 $sectionanchor = $resultDetails['sectionanchor'];
2789
2790                                 // Give extensions a chance to modify URL query on update
2791                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
2792
2793                                 if ( $resultDetails['redirect'] ) {
2794                                         if ( $extraQuery == '' ) {
2795                                                 $extraQuery = 'redirect=no';
2796                                         } else {
2797                                                 $extraQuery = 'redirect=no&' . $extraQuery;
2798                                         }
2799                                 }
2800                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
2801                                 return false;
2802
2803                         case self::AS_SPAM_ERROR:
2804                                 $this->spamPageWithContent( $resultDetails['spam'] );
2805                                 return false;
2806
2807                         case self::AS_BLOCKED_PAGE_FOR_USER:
2808                                 $this->blockedPage();
2809                                 return false;
2810
2811                         case self::AS_IMAGE_REDIRECT_ANON:
2812                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2813                                 return false;
2814
2815                         case self::AS_READ_ONLY_PAGE_ANON:
2816                                 $this->userNotLoggedInPage();
2817                                 return false;
2818
2819                         case self::AS_READ_ONLY_PAGE_LOGGED:
2820                         case self::AS_READ_ONLY_PAGE:
2821                                 $wgOut->readOnlyPage();
2822                                 return false;
2823
2824                         case self::AS_RATE_LIMITED:
2825                                 $wgOut->rateLimited();
2826                                 return false;
2827
2828                         case self::AS_NO_CREATE_PERMISSION:
2829                                 $this->noCreatePermission();
2830                                 return;
2831
2832                         case self::AS_BLANK_ARTICLE:
2833                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
2834                                 return false;
2835
2836                         case self::AS_IMAGE_REDIRECT_LOGGED:
2837                                 $wgOut->permissionRequired( 'upload' );
2838                                 return false;
2839                 }
2840         }
2841
2842         function getBaseRevision() {
2843                 if ( !$this->mBaseRevision ) {
2844                         $db = wfGetDB( DB_MASTER );
2845                         $baseRevision = Revision::loadFromTimestamp(
2846                                 $db, $this->mTitle, $this->edittime );
2847                         return $this->mBaseRevision = $baseRevision;
2848                 } else {
2849                         return $this->mBaseRevision;
2850                 }
2851         }
2852 }