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