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  * $wgTitle 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         var $mArticle;
  46         var $mTitle;
  47         var $mMetaData = '';
  48         var $isConflict = false;
  49         var $isCssJsSubpage = false;
  50         var $deletedSinceEdit = false;
  51         var $formtype;
  52         var $firsttime;
  53         var $lastDelete;
  54         var $mTokenOk = false;
  55         var $mTokenOkExceptSuffix = false;
  56         var $mTriedSave = false;
  57         var $tooBig = false;
  58         var $kblength = false;
  59         var $missingComment = false;
  60         var $missingSummary = false;
  61         var $allowBlankSummary = false;
  62         var $autoSumm = '';
  63         var $hookError = '';
  64         var $mPreviewTemplates;
  65
  66         # Form values
  67         var $save = false, $preview = false, $diff = false;
  68         var $minoredit = false, $watchthis = false, $recreate = false;
  69         var $textbox1 = '', $textbox2 = '', $summary = '';
  70         var $edittime = '', $section = '', $starttime = '';
  71         var $oldid = 0, $editintro = '', $scrolltop = null;
  72
  73         # Placeholders for text injection by hooks (must be HTML)
  74         # extensions should take care to _append_ to the present value
  75         public $editFormPageTop; // Before even the preview
  76         public $editFormTextTop;
  77         public $editFormTextBeforeContent;
  78         public $editFormTextAfterWarn;
  79         public $editFormTextAfterTools;
  80         public $editFormTextBottom;
  81
  82         /* $didSave should be set to true whenever an article was succesfully altered. */
  83         public $didSave = false;
  84
  85         public $suppressIntro = false;
  86
  87         /**
  88          * @todo document
  89          * @param $article
  90          */
  91         function EditPage( $article ) {
  92                 $this->mArticle =& $article;
  93                 $this->mTitle = $article->getTitle();
  94
  95                 # Placeholders for text injection by hooks (empty per default)
  96                 $this->editFormPageTop =
  97                 $this->editFormTextTop =
  98                 $this->editFormTextBeforeContent =
  99                 $this->editFormTextAfterWarn =
 100                 $this->editFormTextAfterTools =
 101                 $this->editFormTextBottom = "";
 102         }
 103
 104         /**
 105          * Fetch initial editing page content.
 106          * @private
 107          */
 108         function getContent( $def_text = '' ) {
 109                 global $wgOut, $wgRequest, $wgParser, $wgMessageCache;
 110
 111                 # Get variables from query string :P
 112                 $section = $wgRequest->getVal( 'section' );
 113                 $preload = $wgRequest->getVal( 'preload' );
 114                 $undoafter = $wgRequest->getVal( 'undoafter' );
 115                 $undo = $wgRequest->getVal( 'undo' );
 116
 117                 wfProfileIn( __METHOD__ );
 118
 119                 $text = '';
 120                 if( !$this->mTitle->exists() ) {
 121                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 122                                 $wgMessageCache->loadAllMessages();
 123                                 # If this is a system message, get the default text.
 124                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
 125                         } else {
 126                                 # If requested, preload some text.
 127                                 $text = $this->getPreloadedText( $preload );
 128                         }
 129                         # We used to put MediaWiki:Newarticletext here if
 130                         # $text was empty at this point.
 131                         # This is now shown above the edit box instead.
 132                 } else {
 133                         // FIXME: may be better to use Revision class directly
 134                         // But don't mess with it just yet. Article knows how to
 135                         // fetch the page record from the high-priority server,
 136                         // which is needed to guarantee we don't pick up lagged
 137                         // information.
 138
 139                         $text = $this->mArticle->getContent();
 140
 141                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 142                                 # If they got undoafter and undo round the wrong way, switch them
 143                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 144                         }
 145
 146                         if ( $undo > 0 && $undo > $undoafter ) {
 147                                 # Undoing a specific edit overrides section editing; section-editing
 148                                 # doesn't work with undoing.
 149                                 if ( $undoafter ) {
 150                                         $undorev = Revision::newFromId($undo);
 151                                         $oldrev = Revision::newFromId($undoafter);
 152                                 } else {
 153                                         $undorev = Revision::newFromId($undo);
 154                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 155                                 }
 156
 157                                 # Sanity check, make sure it's the right page,
 158                                 # the revisions exist and they were not deleted.
 159                                 # Otherwise, $text will be left as-is.
 160                                 if( !is_null( $undorev ) && !is_null( $oldrev ) &&
 161                                         $undorev->getPage() == $oldrev->getPage() &&
 162                                         $undorev->getPage() == $this->mArticle->getID() &&
 163                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 164                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 165                                         $undorev_text = $undorev->getText();
 166                                         $oldrev_text = $oldrev->getText();
 167                                         $currev_text = $text;
 168
 169                                         if ( $currev_text != $undorev_text ) {
 170                                                 $result = wfMerge( $undorev_text, $oldrev_text, $currev_text, $text );
 171                                         } else {
 172                                                 # No use doing a merge if it's just a straight revert.
 173                                                 $text = $oldrev_text;
 174                                                 $result = true;
 175                                         }
 176                                         if( $result ) {
 177                                                 # Inform the user of our success and set an automatic edit summary
 178                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 179                                                 $firstrev = $oldrev->getNext();
 180                                                 # If we just undid one rev, use an autosummary
 181                                                 if( $firstrev->mId == $undo ) {
 182                                                         $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 183                                                 }
 184                                                 $this->formtype = 'diff';
 185                                         } else {
 186                                                 # Warn the user that something went wrong
 187                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 188                                         }
 189                                 } else {
 190                                         // Failed basic sanity checks.
 191                                         // Older revisions may have been removed since the link
 192                                         // was created, or we may simply have got bogus input.
 193                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-norev' ) );
 194                                 }
 195                         } else if( $section != '' ) {
 196                                 if( $section == 'new' ) {
 197                                         $text = $this->getPreloadedText( $preload );
 198                                 } else {
 199                                         $text = $wgParser->getSection( $text, $section, $def_text );
 200                                 }
 201                         }
 202                 }
 203
 204                 wfProfileOut( __METHOD__ );
 205                 return $text;
 206         }
 207
 208         /**
 209          * Get the contents of a page from its title and remove includeonly tags
 210          *
 211          * @param $preload String: the title of the page.
 212          * @return string The contents of the page.
 213          */
 214         private function getPreloadedText($preload) {
 215                 if ( $preload === '' )
 216                         return '';
 217                 else {
 218                         $preloadTitle = Title::newFromText( $preload );
 219                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 220                                 $rev=Revision::newFromTitle($preloadTitle);
 221                                 if ( is_object( $rev ) ) {
 222                                         $text = $rev->getText();
 223                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 224                                         // its own mini-parser! -ævar
 225                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 226                                         return $text;
 227                                 } else
 228                                         return '';
 229                         }
 230                 }
 231         }
 232
 233         /**
 234          * This is the function that extracts metadata from the article body on the first view.
 235          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 236          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 237          */
 238         function extractMetaDataFromArticle () {
 239                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 240                 $this->mMetaData = '' ;
 241                 if ( !$wgUseMetadataEdit ) return ;
 242                 if ( $wgMetadataWhitelist == '' ) return ;
 243                 $s = '' ;
 244                 $t = $this->getContent();
 245
 246                 # MISSING : <nowiki> filtering
 247
 248                 # Categories and language links
 249                 $t = explode ( "\n" , $t ) ;
 250                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 251                 $cat = $ll = array() ;
 252                 foreach ( $t AS $key => $x )
 253                 {
 254                         $y = trim ( strtolower ( $x ) ) ;
 255                         while ( substr ( $y , 0 , 2 ) == '[[' )
 256                         {
 257                                 $y = explode ( ']]' , trim ( $x ) ) ;
 258                                 $first = array_shift ( $y ) ;
 259                                 $first = explode ( ':' , $first ) ;
 260                                 $ns = array_shift ( $first ) ;
 261                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 262                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 263                                 {
 264                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 265                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 266                                         else $ll[] = $add ;
 267                                         $x = implode ( ']]' , $y ) ;
 268                                         $t[$key] = $x ;
 269                                         $y = trim ( strtolower ( $x ) ) ;
 270                                 }
 271                         }
 272                 }
 273                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 274                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 275                 $t = implode ( "\n" , $t ) ;
 276
 277                 # Load whitelist
 278                 $sat = array () ; # stand-alone-templates; must be lowercase
 279                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 280                 $wl_article = new Article ( $wl_title ) ;
 281                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 282                 foreach ( $wl AS $x )
 283                 {
 284                         $isentry = false ;
 285                         $x = trim ( $x ) ;
 286                         while ( substr ( $x , 0 , 1 ) == '*' )
 287                         {
 288                                 $isentry = true ;
 289                                 $x = trim ( substr ( $x , 1 ) ) ;
 290                         }
 291                         if ( $isentry )
 292                         {
 293                                 $sat[] = strtolower ( $x ) ;
 294                         }
 295
 296                 }
 297
 298                 # Templates, but only some
 299                 $t = explode ( '{{' , $t ) ;
 300                 $tl = array () ;
 301                 foreach ( $t AS $key => $x )
 302                 {
 303                         $y = explode ( '}}' , $x , 2 ) ;
 304                         if ( count ( $y ) == 2 )
 305                         {
 306                                 $z = $y[0] ;
 307                                 $z = explode ( '|' , $z ) ;
 308                                 $tn = array_shift ( $z ) ;
 309                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 310                                 {
 311                                         $tl[] = '{{' . $y[0] . '}}' ;
 312                                         $t[$key] = $y[1] ;
 313                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 314                                 }
 315                                 else $t[$key] = '{{' . $x ;
 316                         }
 317                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 318                         else $t[$key] = $x ;
 319                 }
 320                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 321                 $t = implode ( '' , $t ) ;
 322
 323                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 324                 $this->mArticle->mContent = $t ;
 325                 $this->mMetaData = $s ;
 326         }
 327
 328         protected function wasDeletedSinceLastEdit() {
 329                 /* Note that we rely on the logging table, which hasn't been always there,
 330                  * but that doesn't matter, because this only applies to brand new
 331                  * deletes.
 332                  */
 333                 if ( $this->deletedSinceEdit )
 334                         return true;
 335                 if ( $this->mTitle->isDeleted() ) {
 336                         $this->lastDelete = $this->getLastDelete();
 337                         if ( !is_null($this->lastDelete) ) {
 338                                 $deletetime = $this->lastDelete->log_timestamp;
 339                                 if ( ($deletetime - $this->starttime) > 0 ) {
 340                                         $this->deletedSinceEdit = true;
 341                                 }
 342                         }
 343                 }
 344                 return $this->deletedSinceEdit;
 345         }
 346
 347         function submit() {
 348                 $this->edit();
 349         }
 350
 351         /**
 352          * This is the function that gets called for "action=edit". It
 353          * sets up various member variables, then passes execution to
 354          * another function, usually showEditForm()
 355          *
 356          * The edit form is self-submitting, so that when things like
 357          * preview and edit conflicts occur, we get the same form back
 358          * with the extra stuff added.  Only when the final submission
 359          * is made and all is well do we actually save and redirect to
 360          * the newly-edited page.
 361          */
 362         function edit() {
 363                 global $wgOut, $wgUser, $wgRequest;
 364
 365                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 366                         return;
 367
 368                 wfProfileIn( __METHOD__ );
 369                 wfDebug( __METHOD__.": enter\n" );
 370
 371                 // this is not an article
 372                 $wgOut->setArticleFlag(false);
 373
 374                 $this->importFormData( $wgRequest );
 375                 $this->firsttime = false;
 376
 377                 if( $this->live ) {
 378                         $this->livePreview();
 379                         wfProfileOut( __METHOD__ );
 380                         return;
 381                 }
 382
 383                 $wgOut->addScriptFile( 'edit.js' );
 384
 385                 if( wfReadOnly() ) {
 386                         $this->readOnlyPage( $this->getContent() );
 387                         wfProfileOut( __METHOD__ );
 388                         return;
 389                 }
 390
 391                 $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
 392                 if( !$this->mTitle->exists() ) {
 393                         $permErrors = array_merge( $permErrors,
 394                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors ) );
 395                 }
 396
 397                 # Ignore some permissions errors.
 398                 $remove = array();
 399                 foreach( $permErrors as $error ) {
 400                         if ( ( $this->preview || $this->diff ) &&
 401                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 402                         {
 403                                 // Don't worry about blocks when previewing/diffing
 404                                 $remove[] = $error;
 405                         }
 406
 407                         if ($error[0] == 'readonlytext')
 408                         {
 409                                 if ($this->edit) {
 410                                         $this->formtype = 'preview';
 411                                 } elseif ($this->save || $this->preview || $this->diff) {
 412                                         $remove[] = $error;
 413                                 }
 414                         }
 415                 }
 416                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 417
 418                 if ( $permErrors ) {
 419                         wfDebug( __METHOD__.": User can't edit\n" );
 420                         $this->readOnlyPage( $this->getContent(), true, $permErrors );
 421                         wfProfileOut( __METHOD__ );
 422                         return;
 423                 } else {
 424                         if ( $this->save ) {
 425                                 $this->formtype = 'save';
 426                         } else if ( $this->preview ) {
 427                                 $this->formtype = 'preview';
 428                         } else if ( $this->diff ) {
 429                                 $this->formtype = 'diff';
 430                         } else { # First time through
 431                                 $this->firsttime = true;
 432                                 if( $this->previewOnOpen() ) {
 433                                         $this->formtype = 'preview';
 434                                 } else {
 435                                         $this->extractMetaDataFromArticle () ;
 436                                         $this->formtype = 'initial';
 437                                 }
 438                         }
 439                 }
 440
 441                 wfProfileIn( __METHOD__."-business-end" );
 442
 443                 $this->isConflict = false;
 444                 // css / js subpages of user pages get a special treatment
 445                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 446                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 447
 448                 # Show applicable editing introductions
 449                 if( $this->formtype == 'initial' || $this->firsttime )
 450                         $this->showIntro();
 451
 452                 if( $this->mTitle->isTalkPage() ) {
 453                         $wgOut->addWikiMsg( 'talkpagetext' );
 454                 }
 455
 456                 # Attempt submission here.  This will check for edit conflicts,
 457                 # and redundantly check for locked database, blocked IPs, etc.
 458                 # that edit() already checked just in case someone tries to sneak
 459                 # in the back door with a hand-edited submission URL.
 460
 461                 if ( 'save' == $this->formtype ) {
 462                         if ( !$this->attemptSave() ) {
 463                                 wfProfileOut( __METHOD__."-business-end" );
 464                                 wfProfileOut( __METHOD__ );
 465                                 return;
 466                         }
 467                 }
 468
 469                 # First time through: get contents, set time for conflict
 470                 # checking, etc.
 471                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 472                         if ($this->initialiseForm() === false) {
 473                                 $this->noSuchSectionPage();
 474                                 wfProfileOut( __METHOD__."-business-end" );
 475                                 wfProfileOut( __METHOD__ );
 476                                 return;
 477                         }
 478                         if( !$this->mTitle->getArticleId() )
 479                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 480                 }
 481
 482                 $this->showEditForm();
 483                 wfProfileOut( __METHOD__."-business-end" );
 484                 wfProfileOut( __METHOD__ );
 485         }
 486
 487         /**
 488          * Show a read-only error
 489          * Parameters are the same as OutputPage:readOnlyPage()
 490          * Redirect to the article page if redlink=1
 491          */
 492         function readOnlyPage( $source = null, $protected = false, $reasons = array() ) {
 493                 global $wgRequest, $wgOut;
 494                 if ( $wgRequest->getBool( 'redlink' ) ) {
 495                         // The edit page was reached via a red link.
 496                         // Redirect to the article page and let them click the edit tab if
 497                         // they really want a permission error.
 498                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 499                 } else {
 500                         $wgOut->readOnlyPage( $source, $protected, $reasons );
 501                 }
 502         }
 503
 504         /**
 505          * Should we show a preview when the edit form is first shown?
 506          *
 507          * @return bool
 508          */
 509         private function previewOnOpen() {
 510                 global $wgRequest, $wgUser;
 511                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 512                         // Explicit override from request
 513                         return true;
 514                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 515                         // Explicit override from request
 516                         return false;
 517                 } elseif( $this->section == 'new' ) {
 518                         // Nothing *to* preview for new sections
 519                         return false;
 520                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 521                         // Standard preference behaviour
 522                         return true;
 523                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 524                         // Categories are special
 525                         return true;
 526                 } else {
 527                         return false;
 528                 }
 529         }
 530
 531         /**
 532          * @todo document
 533          * @param $request
 534          */
 535         function importFormData( &$request ) {
 536                 global $wgLang, $wgUser;
 537                 $fname = 'EditPage::importFormData';
 538                 wfProfileIn( $fname );
 539
 540                 # Section edit can come from either the form or a link
 541                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 542
 543                 if( $request->wasPosted() ) {
 544                         # These fields need to be checked for encoding.
 545                         # Also remove trailing whitespace, but don't remove _initial_
 546                         # whitespace from the text boxes. This may be significant formatting.
 547                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 548                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 549                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 550                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 551                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 552
 553                         # Remove extra headings from summaries and new sections.
 554                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 555
 556                         $this->edittime = $request->getVal( 'wpEdittime' );
 557                         $this->starttime = $request->getVal( 'wpStarttime' );
 558
 559                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 560
 561                         if( is_null( $this->edittime ) ) {
 562                                 # If the form is incomplete, force to preview.
 563                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 564                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 565                                 $this->preview  = true;
 566                         } else {
 567                                 /* Fallback for live preview */
 568                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 569                                 $this->diff = $request->getCheck( 'wpDiff' );
 570
 571                                 // Remember whether a save was requested, so we can indicate
 572                                 // if we forced preview due to session failure.
 573                                 $this->mTriedSave = !$this->preview;
 574
 575                                 if ( $this->tokenOk( $request ) ) {
 576                                         # Some browsers will not report any submit button
 577                                         # if the user hits enter in the comment box.
 578                                         # The unmarked state will be assumed to be a save,
 579                                         # if the form seems otherwise complete.
 580                                         wfDebug( "$fname: Passed token check.\n" );
 581                                 } else if ( $this->diff ) {
 582                                         # Failed token check, but only requested "Show Changes".
 583                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 584                                 } else {
 585                                         # Page might be a hack attempt posted from
 586                                         # an external site. Preview instead of saving.
 587                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 588                                         $this->preview = true;
 589                                 }
 590                         }
 591                         $this->save = !$this->preview && !$this->diff;
 592                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 593                                 $this->edittime = null;
 594                         }
 595
 596                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 597                                 $this->starttime = null;
 598                         }
 599
 600                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 601
 602                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 603                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 604
 605                         # Don't force edit summaries when a user is editing their own user or talk page
 606                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 607                                 $this->allowBlankSummary = true;
 608                         } else {
 609                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 610                         }
 611
 612                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 613                 } else {
 614                         # Not a posted form? Start with nothing.
 615                         wfDebug( "$fname: Not a posted form.\n" );
 616                         $this->textbox1  = '';
 617                         $this->textbox2  = '';
 618                         $this->mMetaData = '';
 619                         $this->summary   = '';
 620                         $this->edittime  = '';
 621                         $this->starttime = wfTimestampNow();
 622                         $this->edit      = false;
 623                         $this->preview   = false;
 624                         $this->save      = false;
 625                         $this->diff      = false;
 626                         $this->minoredit = false;
 627                         $this->watchthis = false;
 628                         $this->recreate  = false;
 629
 630                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 631                                 $this->summary = $request->getVal( 'preloadtitle' );
 632                         }
 633                 }
 634
 635                 $this->oldid = $request->getInt( 'oldid' );
 636
 637                 $this->live = $request->getCheck( 'live' );
 638                 $this->editintro = $request->getText( 'editintro' );
 639
 640                 wfProfileOut( $fname );
 641         }
 642
 643         /**
 644          * Make sure the form isn't faking a user's credentials.
 645          *
 646          * @param $request WebRequest
 647          * @return bool
 648          * @private
 649          */
 650         function tokenOk( &$request ) {
 651                 global $wgUser;
 652                 $token = $request->getVal( 'wpEditToken' );
 653                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 654                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 655                 return $this->mTokenOk;
 656         }
 657
 658         /**
 659          * Show all applicable editing introductions
 660          */
 661         private function showIntro() {
 662                 global $wgOut, $wgUser;
 663                 if( $this->suppressIntro )
 664                         return;
 665
 666                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 667                 if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
 668                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 669                         $username = $parts[0];
 670                         $id = User::idFromName( $username );
 671                         $ip = User::isIP( $username );
 672
 673                         if ( $id == 0 && !$ip ) {
 674                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 675                                         array( 'userpage-userdoesnotexist', $username ) );
 676                         }
 677                 }
 678
 679                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 680                         if( $wgUser->isLoggedIn() ) {
 681                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 682                         } else {
 683                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 684                         }
 685                         $this->showDeletionLog( $wgOut );
 686                 }
 687         }
 688
 689         /**
 690          * Attempt to show a custom editing introduction, if supplied
 691          *
 692          * @return bool
 693          */
 694         private function showCustomIntro() {
 695                 if( $this->editintro ) {
 696                         $title = Title::newFromText( $this->editintro );
 697                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 698                                 global $wgOut;
 699                                 $revision = Revision::newFromTitle( $title );
 700                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 701                                 return true;
 702                         } else {
 703                                 return false;
 704                         }
 705                 } else {
 706                         return false;
 707                 }
 708         }
 709
 710         /**
 711          * Attempt submission (no UI)
 712          * @return one of the constants describing the result
 713          */
 714         function internalAttemptSave( &$result, $bot = false ) {
 715                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 716                 global $wgMaxArticleSize;
 717
 718                 $fname = 'EditPage::attemptSave';
 719                 wfProfileIn( $fname );
 720                 wfProfileIn( "$fname-checks" );
 721
 722                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 723                 {
 724                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 725                         return self::AS_HOOK_ERROR;
 726                 }
 727
 728                 # Check image redirect
 729                 if ( $this->mTitle->getNamespace() == NS_IMAGE &&
 730                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 731                         !$wgUser->isAllowed( 'upload' ) ) {
 732                                 if( $wgUser->isAnon() ) {
 733                                         return self::AS_IMAGE_REDIRECT_ANON;
 734                                 } else {
 735                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 736                                 }
 737                 }
 738
 739                 # Reintegrate metadata
 740                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 741                 $this->mMetaData = '' ;
 742
 743                 # Check for spam
 744                 $matches = array();
 745                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 746                         $result['spam'] = $matches[0];
 747                         wfProfileOut( "$fname-checks" );
 748                         wfProfileOut( $fname );
 749                         return self::AS_SPAM_ERROR;
 750                 }
 751                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 752                         # Error messages or other handling should be performed by the filter function
 753                         wfProfileOut( "$fname-checks" );
 754                         wfProfileOut( $fname );
 755                         return self::AS_FILTERING;
 756                 }
 757                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 758                         # Error messages etc. could be handled within the hook...
 759                         wfProfileOut( "$fname-checks" );
 760                         wfProfileOut( $fname );
 761                         return self::AS_HOOK_ERROR;
 762                 } elseif( $this->hookError != '' ) {
 763                         # ...or the hook could be expecting us to produce an error
 764                         wfProfileOut( "$fname-checks" );
 765                         wfProfileOut( $fname );
 766                         return self::AS_HOOK_ERROR_EXPECTED;
 767                 }
 768                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 769                         # Check block state against master, thus 'false'.
 770                         wfProfileOut( "$fname-checks" );
 771                         wfProfileOut( $fname );
 772                         return self::AS_BLOCKED_PAGE_FOR_USER;
 773                 }
 774                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 775                 if ( $this->kblength > $wgMaxArticleSize ) {
 776                         // Error will be displayed by showEditForm()
 777                         $this->tooBig = true;
 778                         wfProfileOut( "$fname-checks" );
 779                         wfProfileOut( $fname );
 780                         return self::AS_CONTENT_TOO_BIG;
 781                 }
 782
 783                 if ( !$wgUser->isAllowed('edit') ) {
 784                         if ( $wgUser->isAnon() ) {
 785                                 wfProfileOut( "$fname-checks" );
 786                                 wfProfileOut( $fname );
 787                                 return self::AS_READ_ONLY_PAGE_ANON;
 788                         }
 789                         else {
 790                                 wfProfileOut( "$fname-checks" );
 791                                 wfProfileOut( $fname );
 792                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 793                         }
 794                 }
 795
 796                 if ( wfReadOnly() ) {
 797                         wfProfileOut( "$fname-checks" );
 798                         wfProfileOut( $fname );
 799                         return self::AS_READ_ONLY_PAGE;
 800                 }
 801                 if ( $wgUser->pingLimiter() ) {
 802                         wfProfileOut( "$fname-checks" );
 803                         wfProfileOut( $fname );
 804                         return self::AS_RATE_LIMITED;
 805                 }
 806
 807                 # If the article has been deleted while editing, don't save it without
 808                 # confirmation
 809                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 810                         wfProfileOut( "$fname-checks" );
 811                         wfProfileOut( $fname );
 812                         return self::AS_ARTICLE_WAS_DELETED;
 813                 }
 814
 815                 wfProfileOut( "$fname-checks" );
 816
 817                 # If article is new, insert it.
 818                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 819                 if ( 0 == $aid ) {
 820
 821                         // Late check for create permission, just in case *PARANOIA*
 822                         if ( !$this->mTitle->userCan( 'create' ) ) {
 823                                 wfDebug( "$fname: no create permission\n" );
 824                                 wfProfileOut( $fname );
 825                                 return self::AS_NO_CREATE_PERMISSION;
 826                         }
 827
 828                         # Don't save a new article if it's blank.
 829                         if ( '' == $this->textbox1 ) {
 830                                         wfProfileOut( $fname );
 831                                         return self::AS_BLANK_ARTICLE;
 832                         }
 833
 834                         // Run post-section-merge edit filter
 835                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError ) ) ) {
 836                                 # Error messages etc. could be handled within the hook...
 837                                 wfProfileOut( $fname );
 838                                 return self::AS_HOOK_ERROR;
 839                         }
 840
 841                         $isComment = ( $this->section == 'new' );
 842
 843                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 844                                 $this->minoredit, $this->watchthis, false, $isComment, $bot);
 845
 846                         wfProfileOut( $fname );
 847                         return self::AS_SUCCESS_NEW_ARTICLE;
 848                 }
 849
 850                 # Article exists. Check for edit conflict.
 851
 852                 $this->mArticle->clear(); # Force reload of dates, etc.
 853                 $this->mArticle->forUpdate( true ); # Lock the article
 854
 855                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 856
 857                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 858                         $this->isConflict = true;
 859                         if( $this->section == 'new' ) {
 860                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 861                                         $this->mArticle->getComment() == $this->summary ) {
 862                                         // Probably a duplicate submission of a new comment.
 863                                         // This can happen when squid resends a request after
 864                                         // a timeout but the first one actually went through.
 865                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 866                                 } else {
 867                                         // New comment; suppress conflict.
 868                                         $this->isConflict = false;
 869                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 870                                 }
 871                         }
 872                 }
 873                 $userid = $wgUser->getId();
 874
 875                 if ( $this->isConflict) {
 876                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 877                                 $this->mArticle->getTimestamp() . "')\n" );
 878                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 879                 }
 880                 else {
 881                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 882                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 883                 }
 884                 if( is_null( $text ) ) {
 885                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 886                         $this->isConflict = true;
 887                         $text = $this->textbox1;
 888                 }
 889
 890                 # Suppress edit conflict with self, except for section edits where merging is required.
 891                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 892                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 893                         $this->isConflict = false;
 894                 } else {
 895                         # switch from section editing to normal editing in edit conflict
 896                         if($this->isConflict) {
 897                                 # Attempt merge
 898                                 if( $this->mergeChangesInto( $text ) ){
 899                                         // Successful merge! Maybe we should tell the user the good news?
 900                                         $this->isConflict = false;
 901                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 902                                 } else {
 903                                         $this->section = '';
 904                                         $this->textbox1 = $text;
 905                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 906                                 }
 907                         }
 908                 }
 909
 910                 if ( $this->isConflict ) {
 911                         wfProfileOut( $fname );
 912                         return self::AS_CONFLICT_DETECTED;
 913                 }
 914
 915                 $oldtext = $this->mArticle->getContent();
 916
 917                 // Run post-section-merge edit filter
 918                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError ) ) ) {
 919                         # Error messages etc. could be handled within the hook...
 920                         wfProfileOut( $fname );
 921                         return self::AS_HOOK_ERROR;
 922                 }
 923
 924                 # Handle the user preference to force summaries here, but not for null edits
 925                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 926                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 927                         if( md5( $this->summary ) == $this->autoSumm ) {
 928                                 $this->missingSummary = true;
 929                                 wfProfileOut( $fname );
 930                                 return self::AS_SUMMARY_NEEDED;
 931                         }
 932                 }
 933
 934                 # And a similar thing for new sections
 935                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 936                         if (trim($this->summary) == '') {
 937                                 $this->missingSummary = true;
 938                                 wfProfileOut( $fname );
 939                                 return self::AS_SUMMARY_NEEDED;
 940                         }
 941                 }
 942
 943                 # All's well
 944                 wfProfileIn( "$fname-sectionanchor" );
 945                 $sectionanchor = '';
 946                 if( $this->section == 'new' ) {
 947                         if ( $this->textbox1 == '' ) {
 948                                 $this->missingComment = true;
 949                                 return self::AS_TEXTBOX_EMPTY;
 950                         }
 951                         if( $this->summary != '' ) {
 952                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 953                                 # This is a new section, so create a link to the new section
 954                                 # in the revision summary.
 955                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 956                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 957                         }
 958                 } elseif( $this->section != '' ) {
 959                         # Try to get a section anchor from the section source, redirect to edited section if header found
 960                         # XXX: might be better to integrate this into Article::replaceSection
 961                         # for duplicate heading checking and maybe parsing
 962                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 963                         # we can't deal with anchors, includes, html etc in the header for now,
 964                         # headline would need to be parsed to improve this
 965                         if($hasmatch and strlen($matches[2]) > 0) {
 966                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 967                         }
 968                 }
 969                 wfProfileOut( "$fname-sectionanchor" );
 970
 971                 // Save errors may fall down to the edit form, but we've now
 972                 // merged the section into full text. Clear the section field
 973                 // so that later submission of conflict forms won't try to
 974                 // replace that into a duplicated mess.
 975                 $this->textbox1 = $text;
 976                 $this->section = '';
 977
 978                 // Check for length errors again now that the section is merged in
 979                 $this->kblength = (int)(strlen( $text ) / 1024);
 980                 if ( $this->kblength > $wgMaxArticleSize ) {
 981                         $this->tooBig = true;
 982                         wfProfileOut( $fname );
 983                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
 984                 }
 985
 986                 # update the article here
 987                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 988                         $this->watchthis, $bot, $sectionanchor ) ) {
 989                         wfProfileOut( $fname );
 990                         return self::AS_SUCCESS_UPDATE;
 991                 } else {
 992                         $this->isConflict = true;
 993                 }
 994                 wfProfileOut( $fname );
 995                 return self::AS_END;
 996         }
 997
 998         /**
 999          * Initialise form fields in the object
1000          * Called on the first invocation, e.g. when a user clicks an edit link
1001          */
1002         function initialiseForm() {
1003                 $this->edittime = $this->mArticle->getTimestamp();
1004                 $this->textbox1 = $this->getContent(false);
1005                 if ($this->textbox1 === false) return false;
1006
1007                 if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
1008                         $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
1009                 wfProxyCheck();
1010                 return true;
1011         }
1012
1013         /**
1014          * Send the edit form and related headers to $wgOut
1015          * @param $formCallback Optional callable that takes an OutputPage
1016          *                      parameter; will be called during form output
1017          *                      near the top, for captchas and the like.
1018          */
1019         function showEditForm( $formCallback=null ) {
1020                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
1021
1022                 # If $wgTitle is null, that means we're in API mode.
1023                 # Some hook probably called this function  without checking
1024                 # for is_null($wgTitle) first. Bail out right here so we don't
1025                 # do lots of work just to discard it right after.
1026                 if(is_null($wgTitle))
1027                         return;
1028
1029                 $fname = 'EditPage::showEditForm';
1030                 wfProfileIn( $fname );
1031
1032                 $sk = $wgUser->getSkin();
1033
1034                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1035
1036                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
1037
1038                 # Enabled article-related sidebar, toplinks, etc.
1039                 $wgOut->setArticleRelated( true );
1040
1041                 if ( $this->formtype == 'preview' ) {
1042                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1043                 }
1044
1045                 if ( $this->isConflict ) {
1046                         $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
1047                         $wgOut->setPageTitle( $s );
1048                         $wgOut->addWikiMsg( 'explainconflict' );
1049
1050                         $this->textbox2 = $this->textbox1;
1051                         $this->textbox1 = $this->getContent();
1052                         $this->edittime = $this->mArticle->getTimestamp();
1053                 } else {
1054                         if( $this->section != '' ) {
1055                                 if( $this->section == 'new' ) {
1056                                         $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
1057                                 } else {
1058                                         $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
1059                                         $matches = array();
1060                                         if( !$this->summary && !$this->preview && !$this->diff ) {
1061                                                 preg_match( "/^(=+)(.+)\\1/mi",
1062                                                         $this->textbox1,
1063                                                         $matches );
1064                                                 if( !empty( $matches[2] ) ) {
1065                                                         global $wgParser;
1066                                                         $this->summary = "/* " .
1067                                                                 $wgParser->stripSectionName(trim($matches[2])) .
1068                                                                 " */ ";
1069                                                 }
1070                                         }
1071                                 }
1072                         } else {
1073                                 $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
1074                         }
1075                         $wgOut->setPageTitle( $s );
1076
1077                         if ( $this->missingComment ) {
1078                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>',  'missingcommenttext' );
1079                         }
1080
1081                         if( $this->missingSummary && $this->section != 'new' ) {
1082                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1083                         }
1084
1085                         if( $this->missingSummary && $this->section == 'new' ) {
1086                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1087                         }
1088
1089                         if( $this->hookError !== '' ) {
1090                                 $wgOut->addWikiText( $this->hookError );
1091                         }
1092
1093                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1094                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1095                         }
1096                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1097                         // Let sysop know that this will make private content public if saved
1098
1099                                 if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1100                                         $wgOut->addWikiMsg( 'rev-deleted-text-permission' );
1101                                 } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1102                                         $wgOut->addWikiMsg( 'rev-deleted-text-view' );
1103                                 }
1104
1105                                 if( !$this->mArticle->mRevision->isCurrent() ) {
1106                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1107                                         $wgOut->addWikiMsg( 'editingold' );
1108                                 }
1109                         }
1110                 }
1111
1112                 if( wfReadOnly() ) {
1113                         $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
1114                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1115                         $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
1116                 } else {
1117                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1118                                 # Check the skin exists
1119                                 if( $this->isValidCssJsSubpage ) {
1120                                         $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1121                                 } else {
1122                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1123                                 }
1124                         }
1125                 }
1126
1127                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1128                         # Show a warning if editing an interface message
1129                         $wgOut->addWikiMsg( 'editinginterface' );
1130                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1131                         # Is the title semi-protected?
1132                         if( $this->mTitle->isSemiProtected() ) {
1133                                 $noticeMsg = 'semiprotectedpagewarning';
1134                         } else {
1135                                 # Then it must be protected based on static groups (regular)
1136                                 $noticeMsg = 'protectedpagewarning';
1137                         }
1138                         $wgOut->addWikiMsg( $noticeMsg );
1139                 }
1140                 if ( $this->mTitle->isCascadeProtected() ) {
1141                         # Is this page under cascading protection from some source pages?
1142                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1143                         $notice = "$1\n";
1144                         if ( count($cascadeSources) > 0 ) {
1145                                 # Explain, and list the titles responsible
1146                                 foreach( $cascadeSources as $page ) {
1147                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1148                                 }
1149                         }
1150                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', count($cascadeSources) ) );
1151                 }
1152                 if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
1153                         $wgOut->addWikiMsg( 'titleprotectedwarning' );
1154                 }
1155
1156                 if ( $this->kblength === false ) {
1157                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1158                 }
1159                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1160                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize );
1161                 } elseif( $this->kblength > 29 ) {
1162                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1163                 }
1164
1165                 #need to parse the preview early so that we know which templates are used,
1166                 #otherwise users with "show preview after edit box" will get a blank list
1167                 if ( $this->formtype == 'preview' ) {
1168                         $previewOutput = $this->getPreviewText();
1169                 }
1170
1171                 $rows = $wgUser->getIntOption( 'rows' );
1172                 $cols = $wgUser->getIntOption( 'cols' );
1173
1174                 $ew = $wgUser->getOption( 'editwidth' );
1175                 if ( $ew ) $ew = " style=\"width:100%\"";
1176                 else $ew = '';
1177
1178                 $q = 'action=submit';
1179                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1180                 $action = $wgTitle->escapeLocalURL( $q );
1181
1182                 $summary = wfMsg('summary');
1183                 $subject = wfMsg('subject');
1184
1185                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
1186                                 wfMsgExt('cancel', array('parseinline')) );
1187                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1188                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1189                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1190                         htmlspecialchars( wfMsg( 'newwindow' ) );
1191
1192                 global $wgRightsText;
1193                 if ( $wgRightsText ) {
1194                         $copywarnMsg = array( 'copyrightwarning',
1195                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1196                                 $wgRightsText );
1197                 } else {
1198                         $copywarnMsg = array( 'copyrightwarning2',
1199                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1200                 }
1201
1202                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1203                         # prepare toolbar for edit buttons
1204                         $toolbar = $this->getEditToolbar();
1205                 } else {
1206                         $toolbar = '';
1207                 }
1208
1209                 // activate checkboxes if user wants them to be always active
1210                 if( !$this->preview && !$this->diff ) {
1211                         # Sort out the "watch" checkbox
1212                         if( $wgUser->getOption( 'watchdefault' ) ) {
1213                                 # Watch all edits
1214                                 $this->watchthis = true;
1215                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1216                                 # Watch creations
1217                                 $this->watchthis = true;
1218                         } elseif( $this->mTitle->userIsWatching() ) {
1219                                 # Already watched
1220                                 $this->watchthis = true;
1221                         }
1222
1223                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1224                 }
1225
1226                 $wgOut->addHTML( $this->editFormPageTop );
1227
1228                 if ( $wgUser->getOption( 'previewontop' ) ) {
1229
1230                         if ( 'preview' == $this->formtype ) {
1231                                 $this->showPreview( $previewOutput );
1232                         } else {
1233                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1234                         }
1235
1236                         if ( 'diff' == $this->formtype ) {
1237                                 $this->showDiff();
1238                         }
1239                 }
1240
1241
1242                 $wgOut->addHTML( $this->editFormTextTop );
1243
1244                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1245                 # Otherwise, show a summary field at the bottom
1246                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1247
1248                 # If a blank edit summary was previously provided, and the appropriate
1249                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1250                 # user being bounced back more than once in the event that a summary
1251                 # is not required.
1252                 #####
1253                 # For a bit more sophisticated detection of blank summaries, hash the
1254                 # automatic one and pass that in the hidden field wpAutoSummary.
1255                 $summaryhiddens =  '';
1256                 if( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1257                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1258                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1259                 if( $this->section == 'new' ) {
1260                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1261                         $editsummary = '';
1262                         global $wgParser;
1263                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1264                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1265                         $summarypreview = '';
1266                 } else {
1267                         $commentsubject = '';
1268                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1269                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1270                         $subjectpreview = '';
1271                 }
1272
1273                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1274                 if( !$this->preview && !$this->diff ) {
1275                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1276                 }
1277                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1278                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1279
1280                 $hiddencats = $this->mArticle->getHiddenCategories();
1281                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1282
1283                 global $wgUseMetadataEdit ;
1284                 if ( $wgUseMetadataEdit ) {
1285                         $metadata = $this->mMetaData ;
1286                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1287                         $top = wfMsgWikiHtml( 'metadata_help' );
1288                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1289                 }
1290                 else $metadata = "" ;
1291
1292                 $hidden = '';
1293                 $recreate = '';
1294                 if ($this->wasDeletedSinceLastEdit()) {
1295                         if ( 'save' != $this->formtype ) {
1296                                 $wgOut->addWikiMsg('deletedwhileediting');
1297                         } else {
1298                                 // Hide the toolbar and edit area, use can click preview to get it back
1299                                 // Add an confirmation checkbox and explanation.
1300                                 $toolbar = '';
1301                                 $hidden = 'type="hidden" style="display:none;"';
1302                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1303                                 $recreate .=
1304                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1305                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1306                         }
1307                 }
1308
1309                 $tabindex = 2;
1310
1311                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1312                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1313
1314                 $checkboxhtml = implode( $checkboxes, "\n" );
1315
1316                 $buttons = $this->getEditButtons( $tabindex );
1317                 $buttonshtml = implode( $buttons, "\n" );
1318
1319                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1320                         ? '' : Xml::hidden( 'safemode', '1' );
1321
1322                 $wgOut->addHTML( <<<END
1323 {$toolbar}
1324 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1325 END
1326 );
1327
1328                 if( is_callable( $formCallback ) ) {
1329                         call_user_func_array( $formCallback, array( &$wgOut ) );
1330                 }
1331
1332                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1333
1334                 // Put these up at the top to ensure they aren't lost on early form submission
1335                 $wgOut->addHTML( "
1336 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1337 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1338 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1339 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1340
1341                 $encodedtext = htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) );
1342                 if( $encodedtext !== '' ) {
1343                         // Ensure there's a newline at the end, otherwise adding lines
1344                         // is awkward.
1345                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1346                         // mode will show an extra newline. A bit annoying.
1347                         $encodedtext .= "\n";
1348                 }
1349
1350                 $wgOut->addHTML( <<<END
1351 $recreate
1352 {$commentsubject}
1353 {$subjectpreview}
1354 {$this->editFormTextBeforeContent}
1355 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1356 cols='{$cols}'{$ew} $hidden>{$encodedtext}</textarea>
1357 END
1358 );
1359
1360                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1361                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1362                 $wgOut->addHTML( "
1363 {$metadata}
1364 {$editsummary}
1365 {$summarypreview}
1366 {$checkboxhtml}
1367 {$safemodehtml}
1368 ");
1369
1370                 $wgOut->addHTML(
1371 "<div class='editButtons'>
1372 {$buttonshtml}
1373         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1374 </div><!-- editButtons -->
1375 </div><!-- editOptions -->");
1376
1377                 /**
1378                  * To make it harder for someone to slip a user a page
1379                  * which submits an edit form to the wiki without their
1380                  * knowledge, a random token is associated with the login
1381                  * session. If it's not passed back with the submission,
1382                  * we won't save the page, or render user JavaScript and
1383                  * CSS previews.
1384                  *
1385                  * For anon editors, who may not have a session, we just
1386                  * include the constant suffix to prevent editing from
1387                  * broken text-mangling proxies.
1388                  */
1389                 $token = htmlspecialchars( $wgUser->editToken() );
1390                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1391
1392                 $wgOut->addHtml( '<div class="mw-editTools">' );
1393                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1394                 $wgOut->addHtml( '</div>' );
1395
1396                 $wgOut->addHTML( $this->editFormTextAfterTools );
1397
1398                 $wgOut->addHTML( "
1399 <div class='templatesUsed'>
1400 {$formattedtemplates}
1401 </div>
1402 <div class='hiddencats'>
1403 {$formattedhiddencats}
1404 </div>
1405 ");
1406
1407                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1408                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1409
1410                         $de = new DifferenceEngine( $this->mTitle );
1411                         $de->setText( $this->textbox2, $this->textbox1 );
1412                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1413
1414                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1415                         $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
1416                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1417                 }
1418                 $wgOut->addHTML( $this->editFormTextBottom );
1419                 $wgOut->addHTML( "</form>\n" );
1420                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1421
1422                         if ( $this->formtype == 'preview') {
1423                                 $this->showPreview( $previewOutput );
1424                         } else {
1425                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1426                         }
1427
1428                         if ( $this->formtype == 'diff') {
1429                                 $this->showDiff();
1430                         }
1431
1432                 }
1433
1434                 wfProfileOut( $fname );
1435         }
1436
1437         /**
1438          * Append preview output to $wgOut.
1439          * Includes category rendering if this is a category page.
1440          *
1441          * @param string $text The HTML to be output for the preview.
1442          */
1443         private function showPreview( $text ) {
1444                 global $wgOut;
1445
1446                 $wgOut->addHTML( '<div id="wikiPreview">' );
1447                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1448                         $this->mArticle->openShowCategory();
1449                 }
1450                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1451                 $wgOut->addHTML( $text );
1452                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1453                         $this->mArticle->closeShowCategory();
1454                 }
1455                 $wgOut->addHTML( '</div>' );
1456         }
1457
1458         /**
1459          * Live Preview lets us fetch rendered preview page content and
1460          * add it to the page without refreshing the whole page.
1461          * If not supported by the browser it will fall through to the normal form
1462          * submission method.
1463          *
1464          * This function outputs a script tag to support live preview, and
1465          * returns an onclick handler which should be added to the attributes
1466          * of the preview button
1467          */
1468         function doLivePreviewScript() {
1469                 global $wgOut, $wgTitle;
1470                 $wgOut->addScriptFile( 'preview.js' );
1471                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1472                 return "return !lpDoPreview(" .
1473                         "editform.wpTextbox1.value," .
1474                         '"' . $liveAction . '"' . ")";
1475         }
1476
1477         function getLastDelete() {
1478                 $dbr = wfGetDB( DB_SLAVE );
1479                 $fname = 'EditPage::getLastDelete';
1480                 $res = $dbr->select(
1481                         array( 'logging', 'user' ),
1482                         array( 'log_type',
1483                                'log_action',
1484                                'log_timestamp',
1485                                'log_user',
1486                                'log_namespace',
1487                                'log_title',
1488                                'log_comment',
1489                                'log_params',
1490                                'user_name', ),
1491                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1492                                'log_title' => $this->mTitle->getDBkey(),
1493                                'log_type' => 'delete',
1494                                'log_action' => 'delete',
1495                                'user_id=log_user' ),
1496                         $fname,
1497                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1498
1499                 if($dbr->numRows($res) == 1) {
1500                         while ( $x = $dbr->fetchObject ( $res ) )
1501                                 $data = $x;
1502                         $dbr->freeResult ( $res ) ;
1503                 } else {
1504                         $data = null;
1505                 }
1506                 return $data;
1507         }
1508
1509         /**
1510          * @todo document
1511          */
1512         function getPreviewText() {
1513                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang;
1514
1515                 $fname = 'EditPage::getPreviewText';
1516                 wfProfileIn( $fname );
1517
1518                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1519                         if ( $this->mTokenOkExceptSuffix ) {
1520                                 $note = wfMsg( 'token_suffix_mismatch' );
1521                         } else {
1522                                 $note = wfMsg( 'session_fail_preview' );
1523                         }
1524                 } else {
1525                         $note = wfMsg( 'previewnote' );
1526                 }
1527
1528                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1529                 $parserOptions->setEditSection( false );
1530
1531                 global $wgRawHtml;
1532                 if( $wgRawHtml && !$this->mTokenOk ) {
1533                         // Could be an offsite preview attempt. This is very unsafe if
1534                         // HTML is enabled, as it could be an attack.
1535                         return $wgOut->parse( "<div class='previewnote'>" .
1536                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1537                 }
1538
1539                 # don't parse user css/js, show message about preview
1540                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1541
1542                 if ( $this->isCssJsSubpage ) {
1543                         if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1544                                 $previewtext = wfMsg('usercsspreview');
1545                         } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1546                                 $previewtext = wfMsg('userjspreview');
1547                         }
1548                         $parserOptions->setTidy(true);
1549                         $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
1550                         $wgOut->addHTML( $parserOutput->mText );
1551                         $previewHTML = '';
1552                 } else {
1553                         $toparse = $this->textbox1;
1554
1555                         # If we're adding a comment, we need to show the
1556                         # summary as the headline
1557                         if($this->section=="new" && $this->summary!="") {
1558                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1559                         }
1560
1561                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1562
1563                         // Parse mediawiki messages with correct target language
1564                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1565                                 $pos = strrpos( $this->mTitle->getText(), '/' );
1566                                 if ( $pos !== false ) {
1567                                         $code = substr( $this->mTitle->getText(), $pos+1 );
1568                                         switch ($code) {
1569                                                 case $wgLang->getCode():
1570                                                         $obj = $wgLang; break;
1571                                                 case $wgContLang->getCode():
1572                                                         $obj = $wgContLang; break;
1573                                                 default:
1574                                                         $obj = Language::factory( $code );
1575                                         }
1576                                         $parserOptions->setTargetLanguage( $obj );
1577                                 }
1578                         }
1579
1580
1581                         $parserOptions->setTidy(true);
1582                         $parserOptions->enableLimitReport();
1583                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1584                                         $this->mTitle, $parserOptions );
1585
1586                         $previewHTML = $parserOutput->getText();
1587                         $wgOut->addParserOutputNoText( $parserOutput );
1588
1589                         # ParserOutput might have altered the page title, so reset it
1590                         # Also, use the title defined by DISPLAYTITLE magic word when present
1591                         if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
1592                                 $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
1593                         } else {
1594                                 $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );
1595                         }
1596
1597                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1598                                 foreach ( array_keys( $template ) as $dbk)
1599                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1600
1601                         if ( count( $parserOutput->getWarnings() ) ) {
1602                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1603                         }
1604                 }
1605
1606                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1607                         "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
1608                 if ( $this->isConflict ) {
1609                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1610                 }
1611
1612                 if( $wgUser->getOption( 'previewontop' ) ) {
1613                         // Spacer for the edit toolbar
1614                         $previewfoot = '<p><br /></p>';
1615                 } else {
1616                         $previewfoot = '';
1617                 }
1618
1619                 wfProfileOut( $fname );
1620                 return $previewhead . $previewHTML . $previewfoot;
1621         }
1622
1623         /**
1624          * Call the stock "user is blocked" page
1625          */
1626         function blockedPage() {
1627                 global $wgOut, $wgUser;
1628                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1629
1630                 # If the user made changes, preserve them when showing the markup
1631                 # (This happens when a user is blocked during edit, for instance)
1632                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1633                 if( $first ) {
1634                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1635                 } else {
1636                         $source = $this->textbox1;
1637                 }
1638
1639                 # Spit out the source or the user's modified version
1640                 if( $source !== false ) {
1641                         $rows = $wgUser->getOption( 'rows' );
1642                         $cols = $wgUser->getOption( 'cols' );
1643                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1644                         $wgOut->addHtml( '<hr />' );
1645                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1646                         # Why we don't use Xml::element here?
1647                         # Is it because if $source is '', it returns <textarea />?
1648                         $wgOut->addHtml( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1649                 }
1650         }
1651
1652         /**
1653          * Produce the stock "please login to edit pages" page
1654          */
1655         function userNotLoggedInPage() {
1656                 global $wgUser, $wgOut, $wgTitle;
1657                 $skin = $wgUser->getSkin();
1658
1659                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1660                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
1661
1662                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1663                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1664                 $wgOut->setArticleRelated( false );
1665
1666                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1667                 $wgOut->returnToMain( false, $wgTitle );
1668         }
1669
1670         /**
1671          * Creates a basic error page which informs the user that
1672          * they have attempted to edit a nonexistant section.
1673          */
1674         function noSuchSectionPage() {
1675                 global $wgOut, $wgTitle;
1676
1677                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1678                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1679                 $wgOut->setArticleRelated( false );
1680
1681                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1682                 $wgOut->returnToMain( false, $wgTitle );
1683         }
1684
1685         /**
1686          * Produce the stock "your edit contains spam" page
1687          *
1688          * @param $match Text which triggered one or more filters
1689          */
1690         function spamPage( $match = false ) {
1691                 global $wgOut, $wgTitle;
1692
1693                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1694                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1695                 $wgOut->setArticleRelated( false );
1696
1697                 $wgOut->addHtml( '<div id="spamprotected">' );
1698                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1699                 if ( $match )
1700                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1701                 $wgOut->addHtml( '</div>' );
1702
1703                 $wgOut->returnToMain( false, $wgTitle );
1704         }
1705
1706         /**
1707          * @private
1708          * @todo document
1709          */
1710         function mergeChangesInto( &$editText ){
1711                 $fname = 'EditPage::mergeChangesInto';
1712                 wfProfileIn( $fname );
1713
1714                 $db = wfGetDB( DB_MASTER );
1715
1716                 // This is the revision the editor started from
1717                 $baseRevision = Revision::loadFromTimestamp(
1718                         $db, $this->mTitle, $this->edittime );
1719                 if( is_null( $baseRevision ) ) {
1720                         wfProfileOut( $fname );
1721                         return false;
1722                 }
1723                 $baseText = $baseRevision->getText();
1724
1725                 // The current state, we want to merge updates into it
1726                 $currentRevision =  Revision::loadFromTitle(
1727                         $db, $this->mTitle );
1728                 if( is_null( $currentRevision ) ) {
1729                         wfProfileOut( $fname );
1730                         return false;
1731                 }
1732                 $currentText = $currentRevision->getText();
1733
1734                 $result = '';
1735                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1736                         $editText = $result;
1737                         wfProfileOut( $fname );
1738                         return true;
1739                 } else {
1740                         wfProfileOut( $fname );
1741                         return false;
1742                 }
1743         }
1744
1745         /**
1746          * Check if the browser is on a blacklist of user-agents known to
1747          * mangle UTF-8 data on form submission. Returns true if Unicode
1748          * should make it through, false if it's known to be a problem.
1749          * @return bool
1750          * @private
1751          */
1752         function checkUnicodeCompliantBrowser() {
1753                 global $wgBrowserBlackList;
1754                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1755                         // No User-Agent header sent? Trust it by default...
1756                         return true;
1757                 }
1758                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1759                 foreach ( $wgBrowserBlackList as $browser ) {
1760                         if ( preg_match($browser, $currentbrowser) ) {
1761                                 return false;
1762                         }
1763                 }
1764                 return true;
1765         }
1766
1767         /**
1768          * @deprecated use $wgParser->stripSectionName()
1769          */
1770         function pseudoParseSectionAnchor( $text ) {
1771                 global $wgParser;
1772                 return $wgParser->stripSectionName( $text );
1773         }
1774
1775         /**
1776          * Format an anchor fragment as it would appear for a given section name
1777          * @param string $text
1778          * @return string
1779          * @private
1780          */
1781         function sectionAnchor( $text ) {
1782                 global $wgParser;
1783                 return $wgParser->guessSectionNameFromWikiText( $text );
1784         }
1785
1786         /**
1787          * Shows a bulletin board style toolbar for common editing functions.
1788          * It can be disabled in the user preferences.
1789          * The necessary JavaScript code can be found in style/wikibits.js.
1790          */
1791         function getEditToolbar() {
1792                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1793
1794                 /**
1795                  * toolarray an array of arrays which each include the filename of
1796                  * the button image (without path), the opening tag, the closing tag,
1797                  * and optionally a sample text that is inserted between the two when no
1798                  * selection is highlighted.
1799                  * The tip text is shown when the user moves the mouse over the button.
1800                  *
1801                  * Already here are accesskeys (key), which are not used yet until someone
1802                  * can figure out a way to make them work in IE. However, we should make
1803                  * sure these keys are not defined on the edit page.
1804                  */
1805                 $toolarray = array(
1806                         array(  'image' => 'button_bold.png',
1807                                 'id'    => 'mw-editbutton-bold',
1808                                 'open'  => '\'\'\'',
1809                                 'close' => '\'\'\'',
1810                                 'sample'=> wfMsg('bold_sample'),
1811                                 'tip'   => wfMsg('bold_tip'),
1812                                 'key'   => 'B'
1813                         ),
1814                         array(  'image' => 'button_italic.png',
1815                                 'id'    => 'mw-editbutton-italic',
1816                                 'open'  => '\'\'',
1817                                 'close' => '\'\'',
1818                                 'sample'=> wfMsg('italic_sample'),
1819                                 'tip'   => wfMsg('italic_tip'),
1820                                 'key'   => 'I'
1821                         ),
1822                         array(  'image' => 'button_link.png',
1823                                 'id'    => 'mw-editbutton-link',
1824                                 'open'  => '[[',
1825                                 'close' => ']]',
1826                                 'sample'=> wfMsg('link_sample'),
1827                                 'tip'   => wfMsg('link_tip'),
1828                                 'key'   => 'L'
1829                         ),
1830                         array(  'image' => 'button_extlink.png',
1831                                 'id'    => 'mw-editbutton-extlink',
1832                                 'open'  => '[',
1833                                 'close' => ']',
1834                                 'sample'=> wfMsg('extlink_sample'),
1835                                 'tip'   => wfMsg('extlink_tip'),
1836                                 'key'   => 'X'
1837                         ),
1838                         array(  'image' => 'button_headline.png',
1839                                 'id'    => 'mw-editbutton-headline',
1840                                 'open'  => "\n== ",
1841                                 'close' => " ==\n",
1842                                 'sample'=> wfMsg('headline_sample'),
1843                                 'tip'   => wfMsg('headline_tip'),
1844                                 'key'   => 'H'
1845                         ),
1846                         array(  'image' => 'button_image.png',
1847                                 'id'    => 'mw-editbutton-image',
1848                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1849                                 'close' => ']]',
1850                                 'sample'=> wfMsg('image_sample'),
1851                                 'tip'   => wfMsg('image_tip'),
1852                                 'key'   => 'D'
1853                         ),
1854                         array(  'image' => 'button_media.png',
1855                                 'id'    => 'mw-editbutton-media',
1856                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1857                                 'close' => ']]',
1858                                 'sample'=> wfMsg('media_sample'),
1859                                 'tip'   => wfMsg('media_tip'),
1860                                 'key'   => 'M'
1861                         ),
1862                         array(  'image' => 'button_math.png',
1863                                 'id'    => 'mw-editbutton-math',
1864                                 'open'  => "<math>",
1865                                 'close' => "</math>",
1866                                 'sample'=> wfMsg('math_sample'),
1867                                 'tip'   => wfMsg('math_tip'),
1868                                 'key'   => 'C'
1869                         ),
1870                         array(  'image' => 'button_nowiki.png',
1871                                 'id'    => 'mw-editbutton-nowiki',
1872                                 'open'  => "<nowiki>",
1873                                 'close' => "</nowiki>",
1874                                 'sample'=> wfMsg('nowiki_sample'),
1875                                 'tip'   => wfMsg('nowiki_tip'),
1876                                 'key'   => 'N'
1877                         ),
1878                         array(  'image' => 'button_sig.png',
1879                                 'id'    => 'mw-editbutton-signature',
1880                                 'open'  => '--~~~~',
1881                                 'close' => '',
1882                                 'sample'=> '',
1883                                 'tip'   => wfMsg('sig_tip'),
1884                                 'key'   => 'Y'
1885                         ),
1886                         array(  'image' => 'button_hr.png',
1887                                 'id'    => 'mw-editbutton-hr',
1888                                 'open'  => "\n----\n",
1889                                 'close' => '',
1890                                 'sample'=> '',
1891                                 'tip'   => wfMsg('hr_tip'),
1892                                 'key'   => 'R'
1893                         )
1894                 );
1895                 $toolbar = "<div id='toolbar'>\n";
1896                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1897
1898                 foreach($toolarray as $tool) {
1899                         $params = array(
1900                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
1901                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1902                                 // Older browsers show a "speedtip" type message only for ALT.
1903                                 // Ideally these should be different, realistically they
1904                                 // probably don't need to be.
1905                                 $tip = $tool['tip'],
1906                                 $open = $tool['open'],
1907                                 $close = $tool['close'],
1908                                 $sample = $tool['sample'],
1909                                 $cssId = $tool['id'],
1910                         );
1911
1912                         $paramList = implode( ',',
1913                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
1914                         $toolbar.="addButton($paramList);\n";
1915                 }
1916
1917                 $toolbar.="/*]]>*/\n</script>";
1918                 $toolbar.="\n</div>";
1919                 return $toolbar;
1920         }
1921
1922         /**
1923          * Returns an array of html code of the following checkboxes:
1924          * minor and watch
1925          *
1926          * @param $tabindex Current tabindex
1927          * @param $skin Skin object
1928          * @param $checked Array of checkbox => bool, where bool indicates the checked
1929          *                 status of the checkbox
1930          *
1931          * @return array
1932          */
1933         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1934                 global $wgUser;
1935
1936                 $checkboxes = array();
1937
1938                 $checkboxes['minor'] = '';
1939                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1940                 if ( $wgUser->isAllowed('minoredit') ) {
1941                         $attribs = array(
1942                                 'tabindex'  => ++$tabindex,
1943                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1944                                 'id'        => 'wpMinoredit',
1945                         );
1946                         $checkboxes['minor'] =
1947                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1948                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1949                 }
1950
1951                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1952                 $checkboxes['watch'] = '';
1953                 if ( $wgUser->isLoggedIn() ) {
1954                         $attribs = array(
1955                                 'tabindex'  => ++$tabindex,
1956                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1957                                 'id'        => 'wpWatchthis',
1958                         );
1959                         $checkboxes['watch'] =
1960                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1961                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1962                 }
1963                 return $checkboxes;
1964         }
1965
1966         /**
1967          * Returns an array of html code of the following buttons:
1968          * save, diff, preview and live
1969          *
1970          * @param $tabindex Current tabindex
1971          *
1972          * @return array
1973          */
1974         public function getEditButtons(&$tabindex) {
1975                 global $wgLivePreview, $wgUser;
1976
1977                 $buttons = array();
1978
1979                 $temp = array(
1980                         'id'        => 'wpSave',
1981                         'name'      => 'wpSave',
1982                         'type'      => 'submit',
1983                         'tabindex'  => ++$tabindex,
1984                         'value'     => wfMsg('savearticle'),
1985                         'accesskey' => wfMsg('accesskey-save'),
1986                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1987                 );
1988                 $buttons['save'] = Xml::element('input', $temp, '');
1989
1990                 ++$tabindex; // use the same for preview and live preview
1991                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1992                         $temp = array(
1993                                 'id'        => 'wpPreview',
1994                                 'name'      => 'wpPreview',
1995                                 'type'      => 'submit',
1996                                 'tabindex'  => $tabindex,
1997                                 'value'     => wfMsg('showpreview'),
1998                                 'accesskey' => '',
1999                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2000                                 'style'     => 'display: none;',
2001                         );
2002                         $buttons['preview'] = Xml::element('input', $temp, '');
2003
2004                         $temp = array(
2005                                 'id'        => 'wpLivePreview',
2006                                 'name'      => 'wpLivePreview',
2007                                 'type'      => 'submit',
2008                                 'tabindex'  => $tabindex,
2009                                 'value'     => wfMsg('showlivepreview'),
2010                                 'accesskey' => wfMsg('accesskey-preview'),
2011                                 'title'     => '',
2012                                 'onclick'   => $this->doLivePreviewScript(),
2013                         );
2014                         $buttons['live'] = Xml::element('input', $temp, '');
2015                 } else {
2016                         $temp = array(
2017                                 'id'        => 'wpPreview',
2018                                 'name'      => 'wpPreview',
2019                                 'type'      => 'submit',
2020                                 'tabindex'  => $tabindex,
2021                                 'value'     => wfMsg('showpreview'),
2022                                 'accesskey' => wfMsg('accesskey-preview'),
2023                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2024                         );
2025                         $buttons['preview'] = Xml::element('input', $temp, '');
2026                         $buttons['live'] = '';
2027                 }
2028
2029                 $temp = array(
2030                         'id'        => 'wpDiff',
2031                         'name'      => 'wpDiff',
2032                         'type'      => 'submit',
2033                         'tabindex'  => ++$tabindex,
2034                         'value'     => wfMsg('showdiff'),
2035                         'accesskey' => wfMsg('accesskey-diff'),
2036                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
2037                 );
2038                 $buttons['diff'] = Xml::element('input', $temp, '');
2039
2040                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
2041                 return $buttons;
2042         }
2043
2044         /**
2045          * Output preview text only. This can be sucked into the edit page
2046          * via JavaScript, and saves the server time rendering the skin as
2047          * well as theoretically being more robust on the client (doesn't
2048          * disturb the edit box's undo history, won't eat your text on
2049          * failure, etc).
2050          *
2051          * @todo This doesn't include category or interlanguage links.
2052          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2053          *       or something...</s> that might also require more skin
2054          *       initialization, so check whether that's a problem.
2055          */
2056         function livePreview() {
2057                 global $wgOut;
2058                 $wgOut->disable();
2059                 header( 'Content-type: text/xml; charset=utf-8' );
2060                 header( 'Cache-control: no-cache' );
2061
2062                 $previewText = $this->getPreviewText();
2063                 #$categories = $skin->getCategoryLinks();
2064
2065                 $s =
2066                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2067                 Xml::tags( 'livepreview', null,
2068                         Xml::element( 'preview', null, $previewText )
2069                         #.      Xml::element( 'category', null, $categories )
2070                 );
2071                 echo $s;
2072         }
2073
2074
2075         /**
2076          * Get a diff between the current contents of the edit box and the
2077          * version of the page we're editing from.
2078          *
2079          * If this is a section edit, we'll replace the section as for final
2080          * save and then make a comparison.
2081          */
2082         function showDiff() {
2083                 $oldtext = $this->mArticle->fetchContent();
2084                 $newtext = $this->mArticle->replaceSection(
2085                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2086                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2087                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2088                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2089                 if ( $oldtext !== false  || $newtext != '' ) {
2090                         $de = new DifferenceEngine( $this->mTitle );
2091                         $de->setText( $oldtext, $newtext );
2092                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2093                         $de->showDiffStyle();
2094                 } else {
2095                         $difftext = '';
2096                 }
2097
2098                 global $wgOut;
2099                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
2100         }
2101
2102         /**
2103          * Filter an input field through a Unicode de-armoring process if it
2104          * came from an old browser with known broken Unicode editing issues.
2105          *
2106          * @param WebRequest $request
2107          * @param string $field
2108          * @return string
2109          * @private
2110          */
2111         function safeUnicodeInput( $request, $field ) {
2112                 $text = rtrim( $request->getText( $field ) );
2113                 return $request->getBool( 'safemode' )
2114                         ? $this->unmakesafe( $text )
2115                         : $text;
2116         }
2117
2118         /**
2119          * Filter an output field through a Unicode armoring process if it is
2120          * going to an old browser with known broken Unicode editing issues.
2121          *
2122          * @param string $text
2123          * @return string
2124          * @private
2125          */
2126         function safeUnicodeOutput( $text ) {
2127                 global $wgContLang;
2128                 $codedText = $wgContLang->recodeForEdit( $text );
2129                 return $this->checkUnicodeCompliantBrowser()
2130                         ? $codedText
2131                         : $this->makesafe( $codedText );
2132         }
2133
2134         /**
2135          * A number of web browsers are known to corrupt non-ASCII characters
2136          * in a UTF-8 text editing environment. To protect against this,
2137          * detected browsers will be served an armored version of the text,
2138          * with non-ASCII chars converted to numeric HTML character references.
2139          *
2140          * Preexisting such character references will have a 0 added to them
2141          * to ensure that round-trips do not alter the original data.
2142          *
2143          * @param string $invalue
2144          * @return string
2145          * @private
2146          */
2147         function makesafe( $invalue ) {
2148                 // Armor existing references for reversability.
2149                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2150
2151                 $bytesleft = 0;
2152                 $result = "";
2153                 $working = 0;
2154                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2155                         $bytevalue = ord( $invalue{$i} );
2156                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
2157                                 $result .= chr( $bytevalue );
2158                                 $bytesleft = 0;
2159                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2160                                 $working = $working << 6;
2161                                 $working += ($bytevalue & 0x3F);
2162                                 $bytesleft--;
2163                                 if( $bytesleft <= 0 ) {
2164                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2165                                 }
2166                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2167                                 $working = $bytevalue & 0x1F;
2168                                 $bytesleft = 1;
2169                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2170                                 $working = $bytevalue & 0x0F;
2171                                 $bytesleft = 2;
2172                         } else { //1111 0xxx
2173                                 $working = $bytevalue & 0x07;
2174                                 $bytesleft = 3;
2175                         }
2176                 }
2177                 return $result;
2178         }
2179
2180         /**
2181          * Reverse the previously applied transliteration of non-ASCII characters
2182          * back to UTF-8. Used to protect data from corruption by broken web browsers
2183          * as listed in $wgBrowserBlackList.
2184          *
2185          * @param string $invalue
2186          * @return string
2187          * @private
2188          */
2189         function unmakesafe( $invalue ) {
2190                 $result = "";
2191                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2192                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2193                                 $i += 3;
2194                                 $hexstring = "";
2195                                 do {
2196                                         $hexstring .= $invalue{$i};
2197                                         $i++;
2198                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2199
2200                                 // Do some sanity checks. These aren't needed for reversability,
2201                                 // but should help keep the breakage down if the editor
2202                                 // breaks one of the entities whilst editing.
2203                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2204                                         $codepoint = hexdec($hexstring);
2205                                         $result .= codepointToUtf8( $codepoint );
2206                                 } else {
2207                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2208                                 }
2209                         } else {
2210                                 $result .= substr( $invalue, $i, 1 );
2211                         }
2212                 }
2213                 // reverse the transform that we made for reversability reasons.
2214                 return strtr( $result, array( "&#x0" => "&#x" ) );
2215         }
2216
2217         function noCreatePermission() {
2218                 global $wgOut;
2219                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2220                 $wgOut->addWikiMsg( 'nocreatetext' );
2221         }
2222
2223         /**
2224          * If there are rows in the deletion log for this page, show them,
2225          * along with a nice little note for the user
2226          *
2227          * @param OutputPage $out
2228          */
2229         private function showDeletionLog( $out ) {
2230                 global $wgUser;
2231                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
2232                 $pager = new LogPager( $loglist, 'delete', false, $this->mTitle->getPrefixedText() );
2233                 if( $pager->getNumRows() > 0 ) {
2234                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2235                         $out->addWikiMsg( 'recreate-deleted-warn' );
2236                         $out->addHTML(
2237                                 $loglist->beginLogEventsList() .
2238                                 $pager->getBody() .
2239                                 $loglist->endLogEventsList()
2240                         );
2241                         $out->addHtml( '</div>' );
2242                 }
2243         }
2244
2245         /**
2246          * Attempt submission
2247          * @return bool false if output is done, true if the rest of the form should be displayed
2248          */
2249         function attemptSave() {
2250                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2251
2252                 $resultDetails = false;
2253                 $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
2254
2255                 if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2256                         $this->didSave = true;
2257                 }
2258
2259                 switch ($value) {
2260                         case self::AS_HOOK_ERROR_EXPECTED:
2261                         case self::AS_CONTENT_TOO_BIG:
2262                         case self::AS_ARTICLE_WAS_DELETED:
2263                         case self::AS_CONFLICT_DETECTED:
2264                         case self::AS_SUMMARY_NEEDED:
2265                         case self::AS_TEXTBOX_EMPTY:
2266                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2267                         case self::AS_END:
2268                                 return true;
2269
2270                         case self::AS_HOOK_ERROR:
2271                         case self::AS_FILTERING:
2272                         case self::AS_SUCCESS_NEW_ARTICLE:
2273                         case self::AS_SUCCESS_UPDATE:
2274                                 return false;
2275
2276                         case self::AS_SPAM_ERROR:
2277                                 $this->spamPage ( $resultDetails['spam'] );
2278                                 return false;
2279
2280                         case self::AS_BLOCKED_PAGE_FOR_USER:
2281                                 $this->blockedPage();
2282                                 return false;
2283
2284                         case self::AS_IMAGE_REDIRECT_ANON:
2285                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2286                                 return false;
2287
2288                         case self::AS_READ_ONLY_PAGE_ANON:
2289                                 $this->userNotLoggedInPage();
2290                                 return false;
2291
2292                         case self::AS_READ_ONLY_PAGE_LOGGED:
2293                         case self::AS_READ_ONLY_PAGE:
2294                                 $wgOut->readOnlyPage();
2295                                 return false;
2296
2297                         case self::AS_RATE_LIMITED:
2298                                 $wgOut->rateLimited();
2299                                 return false;
2300
2301                         case self::AS_NO_CREATE_PERMISSION;
2302                                 $this->noCreatePermission();
2303                                 return;
2304
2305                         case self::AS_BLANK_ARTICLE:
2306                                 $wgOut->redirect( $wgTitle->getFullURL() );
2307                                 return false;
2308
2309                         case self::AS_IMAGE_REDIRECT_LOGGED:
2310                                 $wgOut->permissionRequired( 'upload' );
2311                                 return false;
2312                 }
2313         }
2314 }