includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  */
   5
   6 /**
   7  * The edit page/HTML interface (split from Article)
   8  * The actual database and text munging is still in Article,
   9  * but it should get easier to call those from alternate
  10  * interfaces.
  11  *
  12  * EditPage cares about two distinct titles:
  13  * $wgTitle is the page that forms submit to, links point to,
  14  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  15  * page in the database that is actually being edited. These are
  16  * usually the same, but they are now allowed to be different.
  17  */
  18 class EditPage {
  19         const AS_SUCCESS_UPDATE                 = 200;
  20         const AS_SUCCESS_NEW_ARTICLE            = 201;
  21         const AS_HOOK_ERROR                     = 210;
  22         const AS_FILTERING                      = 211;
  23         const AS_HOOK_ERROR_EXPECTED            = 212;
  24         const AS_BLOCKED_PAGE_FOR_USER          = 215;
  25         const AS_CONTENT_TOO_BIG                = 216;
  26         const AS_USER_CANNOT_EDIT               = 217;
  27         const AS_READ_ONLY_PAGE_ANON            = 218;
  28         const AS_READ_ONLY_PAGE_LOGGED          = 219;
  29         const AS_READ_ONLY_PAGE                 = 220;
  30         const AS_RATE_LIMITED                   = 221;
  31         const AS_ARTICLE_WAS_DELETED            = 222;
  32         const AS_NO_CREATE_PERMISSION           = 223;
  33         const AS_BLANK_ARTICLE                  = 224;
  34         const AS_CONFLICT_DETECTED              = 225;
  35         const AS_SUMMARY_NEEDED                 = 226;
  36         const AS_TEXTBOX_EMPTY                  = 228;
  37         const AS_MAX_ARTICLE_SIZE_EXCEEDED      = 229;
  38         const AS_OK                             = 230;
  39         const AS_END                            = 231;
  40         const AS_SPAM_ERROR                     = 232;
  41         const AS_IMAGE_REDIRECT_ANON            = 233;
  42         const AS_IMAGE_REDIRECT_LOGGED          = 234;
  43
  44         var $mArticle;
  45         var $mTitle;
  46         var $mMetaData = '';
  47         var $isConflict = false;
  48         var $isCssJsSubpage = false;
  49         var $deletedSinceEdit = false;
  50         var $formtype;
  51         var $firsttime;
  52         var $lastDelete;
  53         var $mTokenOk = false;
  54         var $mTokenOkExceptSuffix = false;
  55         var $mTriedSave = false;
  56         var $tooBig = false;
  57         var $kblength = false;
  58         var $missingComment = false;
  59         var $missingSummary = false;
  60         var $allowBlankSummary = false;
  61         var $autoSumm = '';
  62         var $hookError = '';
  63         var $mPreviewTemplates;
  64
  65         # Form values
  66         var $save = false, $preview = false, $diff = false;
  67         var $minoredit = false, $watchthis = false, $recreate = false;
  68         var $textbox1 = '', $textbox2 = '', $summary = '';
  69         var $edittime = '', $section = '', $starttime = '';
  70         var $oldid = 0, $editintro = '', $scrolltop = null;
  71
  72         # Placeholders for text injection by hooks (must be HTML)
  73         # extensions should take care to _append_ to the present value
  74         public $editFormPageTop; // Before even the preview
  75         public $editFormTextTop;
  76         public $editFormTextBeforeContent;
  77         public $editFormTextAfterWarn;
  78         public $editFormTextAfterTools;
  79         public $editFormTextBottom;
  80
  81         /* $didSave should be set to true whenever an article was succesfully altered. */
  82         public $didSave = false;
  83
  84         public $suppressIntro = false;
  85
  86         /**
  87          * @todo document
  88          * @param $article
  89          */
  90         function EditPage( $article ) {
  91                 $this->mArticle =& $article;
  92                 $this->mTitle = $article->getTitle();
  93
  94                 # Placeholders for text injection by hooks (empty per default)
  95                 $this->editFormPageTop =
  96                 $this->editFormTextTop =
  97                 $this->editFormTextBeforeContent =
  98                 $this->editFormTextAfterWarn =
  99                 $this->editFormTextAfterTools =
 100                 $this->editFormTextBottom = "";
 101         }
 102
 103         /**
 104          * Fetch initial editing page content.
 105          * @private
 106          */
 107         function getContent( $def_text = '' ) {
 108                 global $wgOut, $wgRequest, $wgParser, $wgMessageCache;
 109
 110                 # Get variables from query string :P
 111                 $section = $wgRequest->getVal( 'section' );
 112                 $preload = $wgRequest->getVal( 'preload' );
 113                 $undoafter = $wgRequest->getVal( 'undoafter' );
 114                 $undo = $wgRequest->getVal( 'undo' );
 115
 116                 wfProfileIn( __METHOD__ );
 117
 118                 $text = '';
 119                 if( !$this->mTitle->exists() ) {
 120                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 121                                 $wgMessageCache->loadAllMessages();
 122                                 # If this is a system message, get the default text.
 123                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
 124                         } else {
 125                                 # If requested, preload some text.
 126                                 $text = $this->getPreloadedText( $preload );
 127                         }
 128                         # We used to put MediaWiki:Newarticletext here if
 129                         # $text was empty at this point.
 130                         # This is now shown above the edit box instead.
 131                 } else {
 132                         // FIXME: may be better to use Revision class directly
 133                         // But don't mess with it just yet. Article knows how to
 134                         // fetch the page record from the high-priority server,
 135                         // which is needed to guarantee we don't pick up lagged
 136                         // information.
 137
 138                         $text = $this->mArticle->getContent();
 139
 140                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 141                                 # If they got undoafter and undo round the wrong way, switch them
 142                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 143                         }
 144
 145                         if ( $undo > 0 && $undo > $undoafter ) {
 146                                 # Undoing a specific edit overrides section editing; section-editing
 147                                 # doesn't work with undoing.
 148                                 if ( $undoafter ) {
 149                                         $undorev = Revision::newFromId($undo);
 150                                         $oldrev = Revision::newFromId($undoafter);
 151                                 } else {
 152                                         $undorev = Revision::newFromId($undo);
 153                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 154                                 }
 155
 156                                 # Sanity check, make sure it's the right page,
 157                                 # the revisions exist and they were not deleted.
 158                                 # Otherwise, $text will be left as-is.
 159                                 if( !is_null( $undorev ) && !is_null( $oldrev ) &&
 160                                         $undorev->getPage() == $oldrev->getPage() &&
 161                                         $undorev->getPage() == $this->mArticle->getID() &&
 162                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 163                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 164                                         $undorev_text = $undorev->getText();
 165                                         $oldrev_text = $oldrev->getText();
 166                                         $currev_text = $text;
 167
 168                                         if ( $currev_text != $undorev_text ) {
 169                                                 $result = wfMerge( $undorev_text, $oldrev_text, $currev_text, $text );
 170                                         } else {
 171                                                 # No use doing a merge if it's just a straight revert.
 172                                                 $text = $oldrev_text;
 173                                                 $result = true;
 174                                         }
 175                                         if( $result ) {
 176                                                 # Inform the user of our success and set an automatic edit summary
 177                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 178                                                 $firstrev = $oldrev->getNext();
 179                                                 # If we just undid one rev, use an autosummary
 180                                                 if( $firstrev->mId == $undo ) {
 181                                                         $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 182                                                 }
 183                                                 $this->formtype = 'diff';
 184                                         } else {
 185                                                 # Warn the user that something went wrong
 186                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 187                                         }
 188                                 } else {
 189                                         // Failed basic sanity checks.
 190                                         // Older revisions may have been removed since the link
 191                                         // was created, or we may simply have got bogus input.
 192                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-norev' ) );
 193                                 }
 194                         } else if( $section != '' ) {
 195                                 if( $section == 'new' ) {
 196                                         $text = $this->getPreloadedText( $preload );
 197                                 } else {
 198                                         $text = $wgParser->getSection( $text, $section, $def_text );
 199                                 }
 200                         }
 201                 }
 202
 203                 wfProfileOut( __METHOD__ );
 204                 return $text;
 205         }
 206
 207         /**
 208          * Get the contents of a page from its title and remove includeonly tags
 209          *
 210          * @param $preload String: the title of the page.
 211          * @return string The contents of the page.
 212          */
 213         private function getPreloadedText($preload) {
 214                 if ( $preload === '' )
 215                         return '';
 216                 else {
 217                         $preloadTitle = Title::newFromText( $preload );
 218                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 219                                 $rev=Revision::newFromTitle($preloadTitle);
 220                                 if ( is_object( $rev ) ) {
 221                                         $text = $rev->getText();
 222                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 223                                         // its own mini-parser! -ævar
 224                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 225                                         return $text;
 226                                 } else
 227                                         return '';
 228                         }
 229                 }
 230         }
 231
 232         /**
 233          * This is the function that extracts metadata from the article body on the first view.
 234          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 235          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 236          */
 237         function extractMetaDataFromArticle () {
 238                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 239                 $this->mMetaData = '' ;
 240                 if ( !$wgUseMetadataEdit ) return ;
 241                 if ( $wgMetadataWhitelist == '' ) return ;
 242                 $s = '' ;
 243                 $t = $this->getContent();
 244
 245                 # MISSING : <nowiki> filtering
 246
 247                 # Categories and language links
 248                 $t = explode ( "\n" , $t ) ;
 249                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 250                 $cat = $ll = array() ;
 251                 foreach ( $t AS $key => $x )
 252                 {
 253                         $y = trim ( strtolower ( $x ) ) ;
 254                         while ( substr ( $y , 0 , 2 ) == '[[' )
 255                         {
 256                                 $y = explode ( ']]' , trim ( $x ) ) ;
 257                                 $first = array_shift ( $y ) ;
 258                                 $first = explode ( ':' , $first ) ;
 259                                 $ns = array_shift ( $first ) ;
 260                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 261                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 262                                 {
 263                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 264                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 265                                         else $ll[] = $add ;
 266                                         $x = implode ( ']]' , $y ) ;
 267                                         $t[$key] = $x ;
 268                                         $y = trim ( strtolower ( $x ) ) ;
 269                                 }
 270                         }
 271                 }
 272                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 273                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 274                 $t = implode ( "\n" , $t ) ;
 275
 276                 # Load whitelist
 277                 $sat = array () ; # stand-alone-templates; must be lowercase
 278                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 279                 $wl_article = new Article ( $wl_title ) ;
 280                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 281                 foreach ( $wl AS $x )
 282                 {
 283                         $isentry = false ;
 284                         $x = trim ( $x ) ;
 285                         while ( substr ( $x , 0 , 1 ) == '*' )
 286                         {
 287                                 $isentry = true ;
 288                                 $x = trim ( substr ( $x , 1 ) ) ;
 289                         }
 290                         if ( $isentry )
 291                         {
 292                                 $sat[] = strtolower ( $x ) ;
 293                         }
 294
 295                 }
 296
 297                 # Templates, but only some
 298                 $t = explode ( '{{' , $t ) ;
 299                 $tl = array () ;
 300                 foreach ( $t AS $key => $x )
 301                 {
 302                         $y = explode ( '}}' , $x , 2 ) ;
 303                         if ( count ( $y ) == 2 )
 304                         {
 305                                 $z = $y[0] ;
 306                                 $z = explode ( '|' , $z ) ;
 307                                 $tn = array_shift ( $z ) ;
 308                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 309                                 {
 310                                         $tl[] = '{{' . $y[0] . '}}' ;
 311                                         $t[$key] = $y[1] ;
 312                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 313                                 }
 314                                 else $t[$key] = '{{' . $x ;
 315                         }
 316                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 317                         else $t[$key] = $x ;
 318                 }
 319                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 320                 $t = implode ( '' , $t ) ;
 321
 322                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 323                 $this->mArticle->mContent = $t ;
 324                 $this->mMetaData = $s ;
 325         }
 326
 327         protected function wasDeletedSinceLastEdit() {
 328                 /* Note that we rely on the logging table, which hasn't been always there,
 329                  * but that doesn't matter, because this only applies to brand new
 330                  * deletes.
 331                  */
 332                 if ( $this->deletedSinceEdit )
 333                         return true;
 334                 if ( $this->mTitle->isDeleted() ) {
 335                         $this->lastDelete = $this->getLastDelete();
 336                         if ( !is_null($this->lastDelete) ) {
 337                                 $deletetime = $this->lastDelete->log_timestamp;
 338                                 if ( ($deletetime - $this->starttime) > 0 ) {
 339                                         $this->deletedSinceEdit = true;
 340                                 }
 341                         }
 342                 }
 343                 return $this->deletedSinceEdit;
 344         }
 345
 346         function submit() {
 347                 $this->edit();
 348         }
 349
 350         /**
 351          * This is the function that gets called for "action=edit". It
 352          * sets up various member variables, then passes execution to
 353          * another function, usually showEditForm()
 354          *
 355          * The edit form is self-submitting, so that when things like
 356          * preview and edit conflicts occur, we get the same form back
 357          * with the extra stuff added.  Only when the final submission
 358          * is made and all is well do we actually save and redirect to
 359          * the newly-edited page.
 360          */
 361         function edit() {
 362                 global $wgOut, $wgUser, $wgRequest;
 363
 364                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 365                         return;
 366
 367                 wfProfileIn( __METHOD__ );
 368                 wfDebug( __METHOD__.": enter\n" );
 369
 370                 // this is not an article
 371                 $wgOut->setArticleFlag(false);
 372
 373                 $this->importFormData( $wgRequest );
 374                 $this->firsttime = false;
 375
 376                 if( $this->live ) {
 377                         $this->livePreview();
 378                         wfProfileOut( __METHOD__ );
 379                         return;
 380                 }
 381
 382                 if( wfReadOnly() ) {
 383                         $this->readOnlyPage( $this->getContent() );
 384                         wfProfileOut( __METHOD__ );
 385                         return;
 386                 }
 387
 388                 $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
 389                 if( !$this->mTitle->exists() ) {
 390                         $permErrors = array_merge( $permErrors,
 391                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors ) );
 392                 }
 393
 394                 # Ignore some permissions errors.
 395                 $remove = array();
 396                 foreach( $permErrors as $error ) {
 397                         if ( ( $this->preview || $this->diff ) &&
 398                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 399                         {
 400                                 // Don't worry about blocks when previewing/diffing
 401                                 $remove[] = $error;
 402                         }
 403
 404                         if ($error[0] == 'readonlytext')
 405                         {
 406                                 if ($this->edit) {
 407                                         $this->formtype = 'preview';
 408                                 } elseif ($this->save || $this->preview || $this->diff) {
 409                                         $remove[] = $error;
 410                                 }
 411                         }
 412                 }
 413                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 414
 415                 if ( $permErrors ) {
 416                         wfDebug( __METHOD__.": User can't edit\n" );
 417                         $this->readOnlyPage( $this->getContent(), true, $permErrors );
 418                         wfProfileOut( __METHOD__ );
 419                         return;
 420                 } else {
 421                         if ( $this->save ) {
 422                                 $this->formtype = 'save';
 423                         } else if ( $this->preview ) {
 424                                 $this->formtype = 'preview';
 425                         } else if ( $this->diff ) {
 426                                 $this->formtype = 'diff';
 427                         } else { # First time through
 428                                 $this->firsttime = true;
 429                                 if( $this->previewOnOpen() ) {
 430                                         $this->formtype = 'preview';
 431                                 } else {
 432                                         $this->extractMetaDataFromArticle () ;
 433                                         $this->formtype = 'initial';
 434                                 }
 435                         }
 436                 }
 437
 438                 wfProfileIn( __METHOD__."-business-end" );
 439
 440                 $this->isConflict = false;
 441                 // css / js subpages of user pages get a special treatment
 442                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 443                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 444
 445                 # Show applicable editing introductions
 446                 if( $this->formtype == 'initial' || $this->firsttime )
 447                         $this->showIntro();
 448
 449                 if( $this->mTitle->isTalkPage() ) {
 450                         $wgOut->addWikiMsg( 'talkpagetext' );
 451                 }
 452
 453                 # Attempt submission here.  This will check for edit conflicts,
 454                 # and redundantly check for locked database, blocked IPs, etc.
 455                 # that edit() already checked just in case someone tries to sneak
 456                 # in the back door with a hand-edited submission URL.
 457
 458                 if ( 'save' == $this->formtype ) {
 459                         if ( !$this->attemptSave() ) {
 460                                 wfProfileOut( __METHOD__."-business-end" );
 461                                 wfProfileOut( __METHOD__ );
 462                                 return;
 463                         }
 464                 }
 465
 466                 # First time through: get contents, set time for conflict
 467                 # checking, etc.
 468                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 469                         if ($this->initialiseForm() === false) {
 470                                 $this->noSuchSectionPage();
 471                                 wfProfileOut( __METHOD__."-business-end" );
 472                                 wfProfileOut( __METHOD__ );
 473                                 return;
 474                         }
 475                         if( !$this->mTitle->getArticleId() )
 476                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 477                 }
 478
 479                 $this->showEditForm();
 480                 wfProfileOut( __METHOD__."-business-end" );
 481                 wfProfileOut( __METHOD__ );
 482         }
 483
 484         /**
 485          * Show a read-only error
 486          * Parameters are the same as OutputPage:readOnlyPage()
 487          * Redirect to the article page if redlink=1
 488          */
 489         function readOnlyPage( $source = null, $protected = false, $reasons = array() ) {
 490                 global $wgRequest, $wgOut;
 491                 if ( $wgRequest->getBool( 'redlink' ) ) {
 492                         // The edit page was reached via a red link.
 493                         // Redirect to the article page and let them click the edit tab if
 494                         // they really want a permission error.
 495                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 496                 } else {
 497                         $wgOut->readOnlyPage( $source, $protected, $reasons );
 498                 }
 499         }
 500
 501         /**
 502          * Should we show a preview when the edit form is first shown?
 503          *
 504          * @return bool
 505          */
 506         private function previewOnOpen() {
 507                 global $wgRequest, $wgUser;
 508                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 509                         // Explicit override from request
 510                         return true;
 511                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 512                         // Explicit override from request
 513                         return false;
 514                 } elseif( $this->section == 'new' ) {
 515                         // Nothing *to* preview for new sections
 516                         return false;
 517                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 518                         // Standard preference behaviour
 519                         return true;
 520                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 521                         // Categories are special
 522                         return true;
 523                 } else {
 524                         return false;
 525                 }
 526         }
 527
 528         /**
 529          * @todo document
 530          * @param $request
 531          */
 532         function importFormData( &$request ) {
 533                 global $wgLang, $wgUser;
 534                 $fname = 'EditPage::importFormData';
 535                 wfProfileIn( $fname );
 536
 537                 # Section edit can come from either the form or a link
 538                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 539
 540                 if( $request->wasPosted() ) {
 541                         # These fields need to be checked for encoding.
 542                         # Also remove trailing whitespace, but don't remove _initial_
 543                         # whitespace from the text boxes. This may be significant formatting.
 544                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 545                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 546                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 547                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 548                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 549
 550                         # Remove extra headings from summaries and new sections.
 551                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 552
 553                         $this->edittime = $request->getVal( 'wpEdittime' );
 554                         $this->starttime = $request->getVal( 'wpStarttime' );
 555
 556                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 557
 558                         if( is_null( $this->edittime ) ) {
 559                                 # If the form is incomplete, force to preview.
 560                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 561                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 562                                 $this->preview  = true;
 563                         } else {
 564                                 /* Fallback for live preview */
 565                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 566                                 $this->diff = $request->getCheck( 'wpDiff' );
 567
 568                                 // Remember whether a save was requested, so we can indicate
 569                                 // if we forced preview due to session failure.
 570                                 $this->mTriedSave = !$this->preview;
 571
 572                                 if ( $this->tokenOk( $request ) ) {
 573                                         # Some browsers will not report any submit button
 574                                         # if the user hits enter in the comment box.
 575                                         # The unmarked state will be assumed to be a save,
 576                                         # if the form seems otherwise complete.
 577                                         wfDebug( "$fname: Passed token check.\n" );
 578                                 } else if ( $this->diff ) {
 579                                         # Failed token check, but only requested "Show Changes".
 580                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 581                                 } else {
 582                                         # Page might be a hack attempt posted from
 583                                         # an external site. Preview instead of saving.
 584                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 585                                         $this->preview = true;
 586                                 }
 587                         }
 588                         $this->save = !$this->preview && !$this->diff;
 589                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 590                                 $this->edittime = null;
 591                         }
 592
 593                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 594                                 $this->starttime = null;
 595                         }
 596
 597                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 598
 599                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 600                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 601
 602                         # Don't force edit summaries when a user is editing their own user or talk page
 603                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 604                                 $this->allowBlankSummary = true;
 605                         } else {
 606                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 607                         }
 608
 609                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 610                 } else {
 611                         # Not a posted form? Start with nothing.
 612                         wfDebug( "$fname: Not a posted form.\n" );
 613                         $this->textbox1  = '';
 614                         $this->textbox2  = '';
 615                         $this->mMetaData = '';
 616                         $this->summary   = '';
 617                         $this->edittime  = '';
 618                         $this->starttime = wfTimestampNow();
 619                         $this->edit      = false;
 620                         $this->preview   = false;
 621                         $this->save      = false;
 622                         $this->diff      = false;
 623                         $this->minoredit = false;
 624                         $this->watchthis = false;
 625                         $this->recreate  = false;
 626
 627                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 628                                 $this->summary = $request->getVal( 'preloadtitle' );
 629                         }
 630                 }
 631
 632                 $this->oldid = $request->getInt( 'oldid' );
 633
 634                 $this->live = $request->getCheck( 'live' );
 635                 $this->editintro = $request->getText( 'editintro' );
 636
 637                 wfProfileOut( $fname );
 638         }
 639
 640         /**
 641          * Make sure the form isn't faking a user's credentials.
 642          *
 643          * @param $request WebRequest
 644          * @return bool
 645          * @private
 646          */
 647         function tokenOk( &$request ) {
 648                 global $wgUser;
 649                 $token = $request->getVal( 'wpEditToken' );
 650                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 651                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 652                 return $this->mTokenOk;
 653         }
 654
 655         /**
 656          * Show all applicable editing introductions
 657          */
 658         private function showIntro() {
 659                 global $wgOut, $wgUser;
 660                 if( $this->suppressIntro )
 661                         return;
 662
 663                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 664                 if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
 665                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 666                         $username = $parts[0];
 667                         $id = User::idFromName( $username );
 668                         $ip = User::isIP( $username );
 669
 670                         if ( $id == 0 && !$ip ) {
 671                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 672                                         array( 'userpage-userdoesnotexist', $username ) );
 673                         }
 674                 }
 675
 676                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 677                         if( $wgUser->isLoggedIn() ) {
 678                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 679                         } else {
 680                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 681                         }
 682                         $this->showDeletionLog( $wgOut );
 683                 }
 684         }
 685
 686         /**
 687          * Attempt to show a custom editing introduction, if supplied
 688          *
 689          * @return bool
 690          */
 691         private function showCustomIntro() {
 692                 if( $this->editintro ) {
 693                         $title = Title::newFromText( $this->editintro );
 694                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 695                                 global $wgOut;
 696                                 $revision = Revision::newFromTitle( $title );
 697                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 698                                 return true;
 699                         } else {
 700                                 return false;
 701                         }
 702                 } else {
 703                         return false;
 704                 }
 705         }
 706
 707         /**
 708          * Attempt submission (no UI)
 709          * @return one of the constants describing the result
 710          */
 711         function internalAttemptSave( &$result, $bot = false ) {
 712                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 713                 global $wgMaxArticleSize;
 714
 715                 $fname = 'EditPage::attemptSave';
 716                 wfProfileIn( $fname );
 717                 wfProfileIn( "$fname-checks" );
 718
 719                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 720                 {
 721                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 722                         return self::AS_HOOK_ERROR;
 723                 }
 724
 725                 # Check image redirect
 726                 if ( $this->mTitle->getNamespace() == NS_IMAGE &&
 727                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 728                         !$wgUser->isAllowed( 'upload' ) ) {
 729                                 if( $wgUser->isAnon() ) {
 730                                         return self::AS_IMAGE_REDIRECT_ANON;
 731                                 } else {
 732                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 733                                 }
 734                 }
 735
 736                 # Reintegrate metadata
 737                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 738                 $this->mMetaData = '' ;
 739
 740                 # Check for spam
 741                 $matches = array();
 742                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 743                         $result['spam'] = $matches[0];
 744                         wfProfileOut( "$fname-checks" );
 745                         wfProfileOut( $fname );
 746                         return self::AS_SPAM_ERROR;
 747                 }
 748                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 749                         # Error messages or other handling should be performed by the filter function
 750                         wfProfileOut( "$fname-checks" );
 751                         wfProfileOut( $fname );
 752                         return self::AS_FILTERING;
 753                 }
 754                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 755                         # Error messages etc. could be handled within the hook...
 756                         wfProfileOut( "$fname-checks" );
 757                         wfProfileOut( $fname );
 758                         return self::AS_HOOK_ERROR;
 759                 } elseif( $this->hookError != '' ) {
 760                         # ...or the hook could be expecting us to produce an error
 761                         wfProfileOut( "$fname-checks" );
 762                         wfProfileOut( $fname );
 763                         return self::AS_HOOK_ERROR_EXPECTED;
 764                 }
 765                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 766                         # Check block state against master, thus 'false'.
 767                         wfProfileOut( "$fname-checks" );
 768                         wfProfileOut( $fname );
 769                         return self::AS_BLOCKED_PAGE_FOR_USER;
 770                 }
 771                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 772                 if ( $this->kblength > $wgMaxArticleSize ) {
 773                         // Error will be displayed by showEditForm()
 774                         $this->tooBig = true;
 775                         wfProfileOut( "$fname-checks" );
 776                         wfProfileOut( $fname );
 777                         return self::AS_CONTENT_TOO_BIG;
 778                 }
 779
 780                 if ( !$wgUser->isAllowed('edit') ) {
 781                         if ( $wgUser->isAnon() ) {
 782                                 wfProfileOut( "$fname-checks" );
 783                                 wfProfileOut( $fname );
 784                                 return self::AS_READ_ONLY_PAGE_ANON;
 785                         }
 786                         else {
 787                                 wfProfileOut( "$fname-checks" );
 788                                 wfProfileOut( $fname );
 789                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 790                         }
 791                 }
 792
 793                 if ( wfReadOnly() ) {
 794                         wfProfileOut( "$fname-checks" );
 795                         wfProfileOut( $fname );
 796                         return self::AS_READ_ONLY_PAGE;
 797                 }
 798                 if ( $wgUser->pingLimiter() ) {
 799                         wfProfileOut( "$fname-checks" );
 800                         wfProfileOut( $fname );
 801                         return self::AS_RATE_LIMITED;
 802                 }
 803
 804                 # If the article has been deleted while editing, don't save it without
 805                 # confirmation
 806                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 807                         wfProfileOut( "$fname-checks" );
 808                         wfProfileOut( $fname );
 809                         return self::AS_ARTICLE_WAS_DELETED;
 810                 }
 811
 812                 wfProfileOut( "$fname-checks" );
 813
 814                 # If article is new, insert it.
 815                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 816                 if ( 0 == $aid ) {
 817
 818                         // Late check for create permission, just in case *PARANOIA*
 819                         if ( !$this->mTitle->userCan( 'create' ) ) {
 820                                 wfDebug( "$fname: no create permission\n" );
 821                                 wfProfileOut( $fname );
 822                                 return self::AS_NO_CREATE_PERMISSION;
 823                         }
 824
 825                         # Don't save a new article if it's blank.
 826                         if ( '' == $this->textbox1 ) {
 827                                         wfProfileOut( $fname );
 828                                         return self::AS_BLANK_ARTICLE;
 829                         }
 830
 831                         // Run post-section-merge edit filter
 832                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError ) ) ) {
 833                                 # Error messages etc. could be handled within the hook...
 834                                 wfProfileOut( $fname );
 835                                 return self::AS_HOOK_ERROR;
 836                         }
 837
 838                         $isComment = ( $this->section == 'new' );
 839
 840                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 841                                 $this->minoredit, $this->watchthis, false, $isComment, $bot);
 842
 843                         wfProfileOut( $fname );
 844                         return self::AS_SUCCESS_NEW_ARTICLE;
 845                 }
 846
 847                 # Article exists. Check for edit conflict.
 848
 849                 $this->mArticle->clear(); # Force reload of dates, etc.
 850                 $this->mArticle->forUpdate( true ); # Lock the article
 851
 852                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 853
 854                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 855                         $this->isConflict = true;
 856                         if( $this->section == 'new' ) {
 857                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 858                                         $this->mArticle->getComment() == $this->summary ) {
 859                                         // Probably a duplicate submission of a new comment.
 860                                         // This can happen when squid resends a request after
 861                                         // a timeout but the first one actually went through.
 862                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 863                                 } else {
 864                                         // New comment; suppress conflict.
 865                                         $this->isConflict = false;
 866                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 867                                 }
 868                         }
 869                 }
 870                 $userid = $wgUser->getID();
 871
 872                 if ( $this->isConflict) {
 873                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 874                                 $this->mArticle->getTimestamp() . "')\n" );
 875                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 876                 }
 877                 else {
 878                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 879                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 880                 }
 881                 if( is_null( $text ) ) {
 882                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 883                         $this->isConflict = true;
 884                         $text = $this->textbox1;
 885                 }
 886
 887                 # Suppress edit conflict with self, except for section edits where merging is required.
 888                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 889                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 890                         $this->isConflict = false;
 891                 } else {
 892                         # switch from section editing to normal editing in edit conflict
 893                         if($this->isConflict) {
 894                                 # Attempt merge
 895                                 if( $this->mergeChangesInto( $text ) ){
 896                                         // Successful merge! Maybe we should tell the user the good news?
 897                                         $this->isConflict = false;
 898                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 899                                 } else {
 900                                         $this->section = '';
 901                                         $this->textbox1 = $text;
 902                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 903                                 }
 904                         }
 905                 }
 906
 907                 if ( $this->isConflict ) {
 908                         wfProfileOut( $fname );
 909                         return self::AS_CONFLICT_DETECTED;
 910                 }
 911
 912                 $oldtext = $this->mArticle->getContent();
 913
 914                 // Run post-section-merge edit filter
 915                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError ) ) ) {
 916                         # Error messages etc. could be handled within the hook...
 917                         wfProfileOut( $fname );
 918                         return self::AS_HOOK_ERROR;
 919                 }
 920
 921                 # Handle the user preference to force summaries here, but not for null edits
 922                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 923                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 924                         if( md5( $this->summary ) == $this->autoSumm ) {
 925                                 $this->missingSummary = true;
 926                                 wfProfileOut( $fname );
 927                                 return self::AS_SUMMARY_NEEDED;
 928                         }
 929                 }
 930
 931                 # And a similar thing for new sections
 932                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 933                         if (trim($this->summary) == '') {
 934                                 $this->missingSummary = true;
 935                                 wfProfileOut( $fname );
 936                                 return self::AS_SUMMARY_NEEDED;
 937                         }
 938                 }
 939
 940                 # All's well
 941                 wfProfileIn( "$fname-sectionanchor" );
 942                 $sectionanchor = '';
 943                 if( $this->section == 'new' ) {
 944                         if ( $this->textbox1 == '' ) {
 945                                 $this->missingComment = true;
 946                                 return self::AS_TEXTBOX_EMPTY;
 947                         }
 948                         if( $this->summary != '' ) {
 949                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 950                                 # This is a new section, so create a link to the new section
 951                                 # in the revision summary.
 952                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 953                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 954                         }
 955                 } elseif( $this->section != '' ) {
 956                         # Try to get a section anchor from the section source, redirect to edited section if header found
 957                         # XXX: might be better to integrate this into Article::replaceSection
 958                         # for duplicate heading checking and maybe parsing
 959                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 960                         # we can't deal with anchors, includes, html etc in the header for now,
 961                         # headline would need to be parsed to improve this
 962                         if($hasmatch and strlen($matches[2]) > 0) {
 963                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 964                         }
 965                 }
 966                 wfProfileOut( "$fname-sectionanchor" );
 967
 968                 // Save errors may fall down to the edit form, but we've now
 969                 // merged the section into full text. Clear the section field
 970                 // so that later submission of conflict forms won't try to
 971                 // replace that into a duplicated mess.
 972                 $this->textbox1 = $text;
 973                 $this->section = '';
 974
 975                 // Check for length errors again now that the section is merged in
 976                 $this->kblength = (int)(strlen( $text ) / 1024);
 977                 if ( $this->kblength > $wgMaxArticleSize ) {
 978                         $this->tooBig = true;
 979                         wfProfileOut( $fname );
 980                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
 981                 }
 982
 983                 # update the article here
 984                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 985                         $this->watchthis, $bot, $sectionanchor ) ) {
 986                         wfProfileOut( $fname );
 987                         return self::AS_SUCCESS_UPDATE;
 988                 } else {
 989                         $this->isConflict = true;
 990                 }
 991                 wfProfileOut( $fname );
 992                 return self::AS_END;
 993         }
 994
 995         /**
 996          * Initialise form fields in the object
 997          * Called on the first invocation, e.g. when a user clicks an edit link
 998          */
 999         function initialiseForm() {
1000                 $this->edittime = $this->mArticle->getTimestamp();
1001                 $this->textbox1 = $this->getContent(false);
1002                 if ($this->textbox1 === false) return false;
1003
1004                 if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
1005                         $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
1006                 wfProxyCheck();
1007                 return true;
1008         }
1009
1010         /**
1011          * Send the edit form and related headers to $wgOut
1012          * @param $formCallback Optional callable that takes an OutputPage
1013          *                      parameter; will be called during form output
1014          *                      near the top, for captchas and the like.
1015          */
1016         function showEditForm( $formCallback=null ) {
1017                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
1018
1019                 # If $wgTitle is null, that means we're in API mode.
1020                 # Some hook probably called this function  without checking
1021                 # for is_null($wgTitle) first. Bail out right here so we don't
1022                 # do lots of work just to discard it right after.
1023                 if(is_null($wgTitle))
1024                         return;
1025
1026                 $fname = 'EditPage::showEditForm';
1027                 wfProfileIn( $fname );
1028
1029                 $sk = $wgUser->getSkin();
1030
1031                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1032
1033                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
1034
1035                 # Enabled article-related sidebar, toplinks, etc.
1036                 $wgOut->setArticleRelated( true );
1037
1038                 if ( $this->formtype == 'preview' ) {
1039                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1040                 }
1041
1042                 if ( $this->isConflict ) {
1043                         $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
1044                         $wgOut->setPageTitle( $s );
1045                         $wgOut->addWikiMsg( 'explainconflict' );
1046
1047                         $this->textbox2 = $this->textbox1;
1048                         $this->textbox1 = $this->getContent();
1049                         $this->edittime = $this->mArticle->getTimestamp();
1050                 } else {
1051                         if( $this->section != '' ) {
1052                                 if( $this->section == 'new' ) {
1053                                         $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
1054                                 } else {
1055                                         $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
1056                                         $matches = array();
1057                                         if( !$this->summary && !$this->preview && !$this->diff ) {
1058                                                 preg_match( "/^(=+)(.+)\\1/mi",
1059                                                         $this->textbox1,
1060                                                         $matches );
1061                                                 if( !empty( $matches[2] ) ) {
1062                                                         global $wgParser;
1063                                                         $this->summary = "/* " .
1064                                                                 $wgParser->stripSectionName(trim($matches[2])) .
1065                                                                 " */ ";
1066                                                 }
1067                                         }
1068                                 }
1069                         } else {
1070                                 $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
1071                         }
1072                         $wgOut->setPageTitle( $s );
1073
1074                         if ( $this->missingComment ) {
1075                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>',  'missingcommenttext' );
1076                         }
1077
1078                         if( $this->missingSummary && $this->section != 'new' ) {
1079                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1080                         }
1081
1082                         if( $this->missingSummary && $this->section == 'new' ) {
1083                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1084                         }
1085
1086                         if( $this->hookError !== '' ) {
1087                                 $wgOut->addWikiText( $this->hookError );
1088                         }
1089
1090                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1091                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1092                         }
1093                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1094                         // Let sysop know that this will make private content public if saved
1095
1096                                 if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1097                                         $wgOut->addWikiMsg( 'rev-deleted-text-permission' );
1098                                 } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1099                                         $wgOut->addWikiMsg( 'rev-deleted-text-view' );
1100                                 }
1101
1102                                 if( !$this->mArticle->mRevision->isCurrent() ) {
1103                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1104                                         $wgOut->addWikiMsg( 'editingold' );
1105                                 }
1106                         }
1107                 }
1108
1109                 if( wfReadOnly() ) {
1110                         $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
1111                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1112                         $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
1113                 } else {
1114                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1115                                 # Check the skin exists
1116                                 if( $this->isValidCssJsSubpage ) {
1117                                         $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1118                                 } else {
1119                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1120                                 }
1121                         }
1122                 }
1123
1124                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1125                         # Show a warning if editing an interface message
1126                         $wgOut->addWikiMsg( 'editinginterface' );
1127                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1128                         # Is the title semi-protected?
1129                         if( $this->mTitle->isSemiProtected() ) {
1130                                 $noticeMsg = 'semiprotectedpagewarning';
1131                         } else {
1132                                 # Then it must be protected based on static groups (regular)
1133                                 $noticeMsg = 'protectedpagewarning';
1134                         }
1135                         $wgOut->addWikiMsg( $noticeMsg );
1136                 }
1137                 if ( $this->mTitle->isCascadeProtected() ) {
1138                         # Is this page under cascading protection from some source pages?
1139                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1140                         $notice = "$1\n";
1141                         if ( count($cascadeSources) > 0 ) {
1142                                 # Explain, and list the titles responsible
1143                                 foreach( $cascadeSources as $page ) {
1144                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1145                                 }
1146                         }
1147                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', count($cascadeSources) ) );
1148                 }
1149                 if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
1150                         $wgOut->addWikiMsg( 'titleprotectedwarning' );
1151                 }
1152
1153                 if ( $this->kblength === false ) {
1154                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1155                 }
1156                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1157                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize );
1158                 } elseif( $this->kblength > 29 ) {
1159                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1160                 }
1161
1162                 #need to parse the preview early so that we know which templates are used,
1163                 #otherwise users with "show preview after edit box" will get a blank list
1164                 if ( $this->formtype == 'preview' ) {
1165                         $previewOutput = $this->getPreviewText();
1166                 }
1167
1168                 $rows = $wgUser->getIntOption( 'rows' );
1169                 $cols = $wgUser->getIntOption( 'cols' );
1170
1171                 $ew = $wgUser->getOption( 'editwidth' );
1172                 if ( $ew ) $ew = " style=\"width:100%\"";
1173                 else $ew = '';
1174
1175                 $q = 'action=submit';
1176                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1177                 $action = $wgTitle->escapeLocalURL( $q );
1178
1179                 $summary = wfMsg('summary');
1180                 $subject = wfMsg('subject');
1181
1182                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
1183                                 wfMsgExt('cancel', array('parseinline')) );
1184                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1185                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1186                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1187                         htmlspecialchars( wfMsg( 'newwindow' ) );
1188
1189                 global $wgRightsText;
1190                 if ( $wgRightsText ) {
1191                         $copywarnMsg = array( 'copyrightwarning',
1192                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1193                                 $wgRightsText );
1194                 } else {
1195                         $copywarnMsg = array( 'copyrightwarning2',
1196                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1197                 }
1198
1199                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1200                         # prepare toolbar for edit buttons
1201                         $toolbar = $this->getEditToolbar();
1202                 } else {
1203                         $toolbar = '';
1204                 }
1205
1206                 // activate checkboxes if user wants them to be always active
1207                 if( !$this->preview && !$this->diff ) {
1208                         # Sort out the "watch" checkbox
1209                         if( $wgUser->getOption( 'watchdefault' ) ) {
1210                                 # Watch all edits
1211                                 $this->watchthis = true;
1212                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1213                                 # Watch creations
1214                                 $this->watchthis = true;
1215                         } elseif( $this->mTitle->userIsWatching() ) {
1216                                 # Already watched
1217                                 $this->watchthis = true;
1218                         }
1219
1220                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1221                 }
1222
1223                 $wgOut->addHTML( $this->editFormPageTop );
1224
1225                 if ( $wgUser->getOption( 'previewontop' ) ) {
1226
1227                         if ( 'preview' == $this->formtype ) {
1228                                 $this->showPreview( $previewOutput );
1229                         } else {
1230                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1231                         }
1232
1233                         if ( 'diff' == $this->formtype ) {
1234                                 $this->showDiff();
1235                         }
1236                 }
1237
1238
1239                 $wgOut->addHTML( $this->editFormTextTop );
1240
1241                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1242                 # Otherwise, show a summary field at the bottom
1243                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1244
1245                 # If a blank edit summary was previously provided, and the appropriate
1246                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1247                 # user being bounced back more than once in the event that a summary
1248                 # is not required.
1249                 #####
1250                 # For a bit more sophisticated detection of blank summaries, hash the
1251                 # automatic one and pass that in the hidden field wpAutoSummary.
1252                 $summaryhiddens =  '';
1253                 if( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1254                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1255                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1256                 if( $this->section == 'new' ) {
1257                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$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 />";
1258                         $editsummary = '';
1259                         global $wgParser;
1260                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1261                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1262                         $summarypreview = '';
1263                 } else {
1264                         $commentsubject = '';
1265                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$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 />";
1266                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1267                         $subjectpreview = '';
1268                 }
1269
1270                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1271                 if( !$this->preview && !$this->diff ) {
1272                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1273                 }
1274                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1275                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1276
1277                 $hiddencats = $this->mArticle->getHiddenCategories();
1278                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1279
1280                 global $wgUseMetadataEdit ;
1281                 if ( $wgUseMetadataEdit ) {
1282                         $metadata = $this->mMetaData ;
1283                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1284                         $top = wfMsgWikiHtml( 'metadata_help' );
1285                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1286                 }
1287                 else $metadata = "" ;
1288
1289                 $hidden = '';
1290                 $recreate = '';
1291                 if ($this->wasDeletedSinceLastEdit()) {
1292                         if ( 'save' != $this->formtype ) {
1293                                 $wgOut->addWikiMsg('deletedwhileediting');
1294                         } else {
1295                                 // Hide the toolbar and edit area, use can click preview to get it back
1296                                 // Add an confirmation checkbox and explanation.
1297                                 $toolbar = '';
1298                                 $hidden = 'type="hidden" style="display:none;"';
1299                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1300                                 $recreate .=
1301                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1302                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1303                         }
1304                 }
1305
1306                 $tabindex = 2;
1307
1308                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1309                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1310
1311                 $checkboxhtml = implode( $checkboxes, "\n" );
1312
1313                 $buttons = $this->getEditButtons( $tabindex );
1314                 $buttonshtml = implode( $buttons, "\n" );
1315
1316                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1317                         ? '' : Xml::hidden( 'safemode', '1' );
1318
1319                 $wgOut->addHTML( <<<END
1320 {$toolbar}
1321 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1322 END
1323 );
1324
1325                 if( is_callable( $formCallback ) ) {
1326                         call_user_func_array( $formCallback, array( &$wgOut ) );
1327                 }
1328
1329                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1330
1331                 // Put these up at the top to ensure they aren't lost on early form submission
1332                 $wgOut->addHTML( "
1333 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1334 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1335 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1336 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1337
1338                 $encodedtext = htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) );
1339                 if( $encodedtext !== '' ) {
1340                         // Ensure there's a newline at the end, otherwise adding lines
1341                         // is awkward.
1342                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1343                         // mode will show an extra newline. A bit annoying.
1344                         $encodedtext .= "\n";
1345                 }
1346
1347                 $wgOut->addHTML( <<<END
1348 $recreate
1349 {$commentsubject}
1350 {$subjectpreview}
1351 {$this->editFormTextBeforeContent}
1352 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1353 cols='{$cols}'{$ew} $hidden>{$encodedtext}</textarea>
1354 END
1355 );
1356
1357                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1358                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1359                 $wgOut->addHTML( "
1360 {$metadata}
1361 {$editsummary}
1362 {$summarypreview}
1363 {$checkboxhtml}
1364 {$safemodehtml}
1365 ");
1366
1367                 $wgOut->addHTML(
1368 "<div class='editButtons'>
1369 {$buttonshtml}
1370         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1371 </div><!-- editButtons -->
1372 </div><!-- editOptions -->");
1373
1374                 /**
1375                  * To make it harder for someone to slip a user a page
1376                  * which submits an edit form to the wiki without their
1377                  * knowledge, a random token is associated with the login
1378                  * session. If it's not passed back with the submission,
1379                  * we won't save the page, or render user JavaScript and
1380                  * CSS previews.
1381                  *
1382                  * For anon editors, who may not have a session, we just
1383                  * include the constant suffix to prevent editing from
1384                  * broken text-mangling proxies.
1385                  */
1386                 $token = htmlspecialchars( $wgUser->editToken() );
1387                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1388
1389                 $wgOut->addHtml( '<div class="mw-editTools">' );
1390                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1391                 $wgOut->addHtml( '</div>' );
1392
1393                 $wgOut->addHTML( $this->editFormTextAfterTools );
1394
1395                 $wgOut->addHTML( "
1396 <div class='templatesUsed'>
1397 {$formattedtemplates}
1398 </div>
1399 <div class='hiddencats'>
1400 {$formattedhiddencats}
1401 </div>
1402 ");
1403
1404                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1405                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1406
1407                         $de = new DifferenceEngine( $this->mTitle );
1408                         $de->setText( $this->textbox2, $this->textbox1 );
1409                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1410
1411                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1412                         $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
1413                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1414                 }
1415                 $wgOut->addHTML( $this->editFormTextBottom );
1416                 $wgOut->addHTML( "</form>\n" );
1417                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1418
1419                         if ( $this->formtype == 'preview') {
1420                                 $this->showPreview( $previewOutput );
1421                         } else {
1422                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1423                         }
1424
1425                         if ( $this->formtype == 'diff') {
1426                                 $this->showDiff();
1427                         }
1428
1429                 }
1430
1431                 wfProfileOut( $fname );
1432         }
1433
1434         /**
1435          * Append preview output to $wgOut.
1436          * Includes category rendering if this is a category page.
1437          *
1438          * @param string $text The HTML to be output for the preview.
1439          */
1440         private function showPreview( $text ) {
1441                 global $wgOut;
1442
1443                 $wgOut->addHTML( '<div id="wikiPreview">' );
1444                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1445                         $this->mArticle->openShowCategory();
1446                 }
1447                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1448                 $wgOut->addHTML( $text );
1449                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1450                         $this->mArticle->closeShowCategory();
1451                 }
1452                 $wgOut->addHTML( '</div>' );
1453         }
1454
1455         /**
1456          * Live Preview lets us fetch rendered preview page content and
1457          * add it to the page without refreshing the whole page.
1458          * If not supported by the browser it will fall through to the normal form
1459          * submission method.
1460          *
1461          * This function outputs a script tag to support live preview, and
1462          * returns an onclick handler which should be added to the attributes
1463          * of the preview button
1464          */
1465         function doLivePreviewScript() {
1466                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1467                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1468                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1469                         '"></script>' . "\n" );
1470                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1471                 return "return !lpDoPreview(" .
1472                         "editform.wpTextbox1.value," .
1473                         '"' . $liveAction . '"' . ")";
1474         }
1475
1476         function getLastDelete() {
1477                 $dbr = wfGetDB( DB_SLAVE );
1478                 $fname = 'EditPage::getLastDelete';
1479                 $res = $dbr->select(
1480                         array( 'logging', 'user' ),
1481                         array( 'log_type',
1482                                'log_action',
1483                                'log_timestamp',
1484                                'log_user',
1485                                'log_namespace',
1486                                'log_title',
1487                                'log_comment',
1488                                'log_params',
1489                                'user_name', ),
1490                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1491                                'log_title' => $this->mTitle->getDBkey(),
1492                                'log_type' => 'delete',
1493                                'log_action' => 'delete',
1494                                'user_id=log_user' ),
1495                         $fname,
1496                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1497
1498                 if($dbr->numRows($res) == 1) {
1499                         while ( $x = $dbr->fetchObject ( $res ) )
1500                                 $data = $x;
1501                         $dbr->freeResult ( $res ) ;
1502                 } else {
1503                         $data = null;
1504                 }
1505                 return $data;
1506         }
1507
1508         /**
1509          * @todo document
1510          */
1511         function getPreviewText() {
1512                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang;
1513
1514                 $fname = 'EditPage::getPreviewText';
1515                 wfProfileIn( $fname );
1516
1517                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1518                         if ( $this->mTokenOkExceptSuffix ) {
1519                                 $note = wfMsg( 'token_suffix_mismatch' );
1520                         } else {
1521                                 $note = wfMsg( 'session_fail_preview' );
1522                         }
1523                 } else {
1524                         $note = wfMsg( 'previewnote' );
1525                 }
1526
1527                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1528                 $parserOptions->setEditSection( false );
1529
1530                 global $wgRawHtml;
1531                 if( $wgRawHtml && !$this->mTokenOk ) {
1532                         // Could be an offsite preview attempt. This is very unsafe if
1533                         // HTML is enabled, as it could be an attack.
1534                         return $wgOut->parse( "<div class='previewnote'>" .
1535                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1536                 }
1537
1538                 # don't parse user css/js, show message about preview
1539                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1540
1541                 if ( $this->isCssJsSubpage ) {
1542                         if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1543                                 $previewtext = wfMsg('usercsspreview');
1544                         } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1545                                 $previewtext = wfMsg('userjspreview');
1546                         }
1547                         $parserOptions->setTidy(true);
1548                         $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
1549                         $wgOut->addHTML( $parserOutput->mText );
1550                         $previewHTML = '';
1551                 } else {
1552                         $toparse = $this->textbox1;
1553
1554                         # If we're adding a comment, we need to show the
1555                         # summary as the headline
1556                         if($this->section=="new" && $this->summary!="") {
1557                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1558                         }
1559
1560                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1561
1562                         // Parse mediawiki messages with correct target language
1563                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1564                                 $pos = strrpos( $this->mTitle->getText(), '/' );
1565                                 if ( $pos !== false ) {
1566                                         $code = substr( $this->mTitle->getText(), $pos+1 );
1567                                         switch ($code) {
1568                                                 case $wgLang->getCode():
1569                                                         $obj = $wgLang; break;
1570                                                 case $wgContLang->getCode():
1571                                                         $obj = $wgContLang; break;
1572                                                 default:
1573                                                         $obj = Language::factory( $code );
1574                                         }
1575                                         $parserOptions->setTargetLanguage( $obj );
1576                                 }
1577                         }
1578
1579
1580                         $parserOptions->setTidy(true);
1581                         $parserOptions->enableLimitReport();
1582                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1583                                         $this->mTitle, $parserOptions );
1584
1585                         $previewHTML = $parserOutput->getText();
1586                         $wgOut->addParserOutputNoText( $parserOutput );
1587
1588                         # ParserOutput might have altered the page title, so reset it
1589                         # Also, use the title defined by DISPLAYTITLE magic word when present
1590                         if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
1591                                 $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
1592                         } else {
1593                                 $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );
1594                         }
1595
1596                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1597                                 foreach ( array_keys( $template ) as $dbk)
1598                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1599
1600                         if ( count( $parserOutput->getWarnings() ) ) {
1601                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1602                         }
1603                 }
1604
1605                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1606                         "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
1607                 if ( $this->isConflict ) {
1608                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1609                 }
1610
1611                 if( $wgUser->getOption( 'previewontop' ) ) {
1612                         // Spacer for the edit toolbar
1613                         $previewfoot = '<p><br /></p>';
1614                 } else {
1615                         $previewfoot = '';
1616                 }
1617
1618                 wfProfileOut( $fname );
1619                 return $previewhead . $previewHTML . $previewfoot;
1620         }
1621
1622         /**
1623          * Call the stock "user is blocked" page
1624          */
1625         function blockedPage() {
1626                 global $wgOut, $wgUser;
1627                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1628
1629                 # If the user made changes, preserve them when showing the markup
1630                 # (This happens when a user is blocked during edit, for instance)
1631                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1632                 if( $first ) {
1633                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1634                 } else {
1635                         $source = $this->textbox1;
1636                 }
1637
1638                 # Spit out the source or the user's modified version
1639                 if( $source !== false ) {
1640                         $rows = $wgUser->getOption( 'rows' );
1641                         $cols = $wgUser->getOption( 'cols' );
1642                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1643                         $wgOut->addHtml( '<hr />' );
1644                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1645                         # Why we don't use Xml::element here?
1646                         # Is it because if $source is '', it returns <textarea />?
1647                         $wgOut->addHtml( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1648                 }
1649         }
1650
1651         /**
1652          * Produce the stock "please login to edit pages" page
1653          */
1654         function userNotLoggedInPage() {
1655                 global $wgUser, $wgOut, $wgTitle;
1656                 $skin = $wgUser->getSkin();
1657
1658                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1659                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
1660
1661                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1662                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1663                 $wgOut->setArticleRelated( false );
1664
1665                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1666                 $wgOut->returnToMain( false, $wgTitle );
1667         }
1668
1669         /**
1670          * Creates a basic error page which informs the user that
1671          * they have attempted to edit a nonexistant section.
1672          */
1673         function noSuchSectionPage() {
1674                 global $wgOut, $wgTitle;
1675
1676                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1677                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1678                 $wgOut->setArticleRelated( false );
1679
1680                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1681                 $wgOut->returnToMain( false, $wgTitle );
1682         }
1683
1684         /**
1685          * Produce the stock "your edit contains spam" page
1686          *
1687          * @param $match Text which triggered one or more filters
1688          */
1689         function spamPage( $match = false ) {
1690                 global $wgOut, $wgTitle;
1691
1692                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1693                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1694                 $wgOut->setArticleRelated( false );
1695
1696                 $wgOut->addHtml( '<div id="spamprotected">' );
1697                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1698                 if ( $match )
1699                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1700                 $wgOut->addHtml( '</div>' );
1701
1702                 $wgOut->returnToMain( false, $wgTitle );
1703         }
1704
1705         /**
1706          * @private
1707          * @todo document
1708          */
1709         function mergeChangesInto( &$editText ){
1710                 $fname = 'EditPage::mergeChangesInto';
1711                 wfProfileIn( $fname );
1712
1713                 $db = wfGetDB( DB_MASTER );
1714
1715                 // This is the revision the editor started from
1716                 $baseRevision = Revision::loadFromTimestamp(
1717                         $db, $this->mTitle, $this->edittime );
1718                 if( is_null( $baseRevision ) ) {
1719                         wfProfileOut( $fname );
1720                         return false;
1721                 }
1722                 $baseText = $baseRevision->getText();
1723
1724                 // The current state, we want to merge updates into it
1725                 $currentRevision =  Revision::loadFromTitle(
1726                         $db, $this->mTitle );
1727                 if( is_null( $currentRevision ) ) {
1728                         wfProfileOut( $fname );
1729                         return false;
1730                 }
1731                 $currentText = $currentRevision->getText();
1732
1733                 $result = '';
1734                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1735                         $editText = $result;
1736                         wfProfileOut( $fname );
1737                         return true;
1738                 } else {
1739                         wfProfileOut( $fname );
1740                         return false;
1741                 }
1742         }
1743
1744         /**
1745          * Check if the browser is on a blacklist of user-agents known to
1746          * mangle UTF-8 data on form submission. Returns true if Unicode
1747          * should make it through, false if it's known to be a problem.
1748          * @return bool
1749          * @private
1750          */
1751         function checkUnicodeCompliantBrowser() {
1752                 global $wgBrowserBlackList;
1753                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1754                         // No User-Agent header sent? Trust it by default...
1755                         return true;
1756                 }
1757                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1758                 foreach ( $wgBrowserBlackList as $browser ) {
1759                         if ( preg_match($browser, $currentbrowser) ) {
1760                                 return false;
1761                         }
1762                 }
1763                 return true;
1764         }
1765
1766         /**
1767          * @deprecated use $wgParser->stripSectionName()
1768          */
1769         function pseudoParseSectionAnchor( $text ) {
1770                 global $wgParser;
1771                 return $wgParser->stripSectionName( $text );
1772         }
1773
1774         /**
1775          * Format an anchor fragment as it would appear for a given section name
1776          * @param string $text
1777          * @return string
1778          * @private
1779          */
1780         function sectionAnchor( $text ) {
1781                 global $wgParser;
1782                 return $wgParser->guessSectionNameFromWikiText( $text );
1783         }
1784
1785         /**
1786          * Shows a bulletin board style toolbar for common editing functions.
1787          * It can be disabled in the user preferences.
1788          * The necessary JavaScript code can be found in style/wikibits.js.
1789          */
1790         function getEditToolbar() {
1791                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1792
1793                 /**
1794                  * toolarray an array of arrays which each include the filename of
1795                  * the button image (without path), the opening tag, the closing tag,
1796                  * and optionally a sample text that is inserted between the two when no
1797                  * selection is highlighted.
1798                  * The tip text is shown when the user moves the mouse over the button.
1799                  *
1800                  * Already here are accesskeys (key), which are not used yet until someone
1801                  * can figure out a way to make them work in IE. However, we should make
1802                  * sure these keys are not defined on the edit page.
1803                  */
1804                 $toolarray = array(
1805                         array(  'image' => 'button_bold.png',
1806                                 'id'    => 'mw-editbutton-bold',
1807                                 'open'  => '\'\'\'',
1808                                 'close' => '\'\'\'',
1809                                 'sample'=> wfMsg('bold_sample'),
1810                                 'tip'   => wfMsg('bold_tip'),
1811                                 'key'   => 'B'
1812                         ),
1813                         array(  'image' => 'button_italic.png',
1814                                 'id'    => 'mw-editbutton-italic',
1815                                 'open'  => '\'\'',
1816                                 'close' => '\'\'',
1817                                 'sample'=> wfMsg('italic_sample'),
1818                                 'tip'   => wfMsg('italic_tip'),
1819                                 'key'   => 'I'
1820                         ),
1821                         array(  'image' => 'button_link.png',
1822                                 'id'    => 'mw-editbutton-link',
1823                                 'open'  => '[[',
1824                                 'close' => ']]',
1825                                 'sample'=> wfMsg('link_sample'),
1826                                 'tip'   => wfMsg('link_tip'),
1827                                 'key'   => 'L'
1828                         ),
1829                         array(  'image' => 'button_extlink.png',
1830                                 'id'    => 'mw-editbutton-extlink',
1831                                 'open'  => '[',
1832                                 'close' => ']',
1833                                 'sample'=> wfMsg('extlink_sample'),
1834                                 'tip'   => wfMsg('extlink_tip'),
1835                                 'key'   => 'X'
1836                         ),
1837                         array(  'image' => 'button_headline.png',
1838                                 'id'    => 'mw-editbutton-headline',
1839                                 'open'  => "\n== ",
1840                                 'close' => " ==\n",
1841                                 'sample'=> wfMsg('headline_sample'),
1842                                 'tip'   => wfMsg('headline_tip'),
1843                                 'key'   => 'H'
1844                         ),
1845                         array(  'image' => 'button_image.png',
1846                                 'id'    => 'mw-editbutton-image',
1847                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1848                                 'close' => ']]',
1849                                 'sample'=> wfMsg('image_sample'),
1850                                 'tip'   => wfMsg('image_tip'),
1851                                 'key'   => 'D'
1852                         ),
1853                         array(  'image' => 'button_media.png',
1854                                 'id'    => 'mw-editbutton-media',
1855                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1856                                 'close' => ']]',
1857                                 'sample'=> wfMsg('media_sample'),
1858                                 'tip'   => wfMsg('media_tip'),
1859                                 'key'   => 'M'
1860                         ),
1861                         array(  'image' => 'button_math.png',
1862                                 'id'    => 'mw-editbutton-math',
1863                                 'open'  => "<math>",
1864                                 'close' => "</math>",
1865                                 'sample'=> wfMsg('math_sample'),
1866                                 'tip'   => wfMsg('math_tip'),
1867                                 'key'   => 'C'
1868                         ),
1869                         array(  'image' => 'button_nowiki.png',
1870                                 'id'    => 'mw-editbutton-nowiki',
1871                                 'open'  => "<nowiki>",
1872                                 'close' => "</nowiki>",
1873                                 'sample'=> wfMsg('nowiki_sample'),
1874                                 'tip'   => wfMsg('nowiki_tip'),
1875                                 'key'   => 'N'
1876                         ),
1877                         array(  'image' => 'button_sig.png',
1878                                 'id'    => 'mw-editbutton-signature',
1879                                 'open'  => '--~~~~',
1880                                 'close' => '',
1881                                 'sample'=> '',
1882                                 'tip'   => wfMsg('sig_tip'),
1883                                 'key'   => 'Y'
1884                         ),
1885                         array(  'image' => 'button_hr.png',
1886                                 'id'    => 'mw-editbutton-hr',
1887                                 'open'  => "\n----\n",
1888                                 'close' => '',
1889                                 'sample'=> '',
1890                                 'tip'   => wfMsg('hr_tip'),
1891                                 'key'   => 'R'
1892                         )
1893                 );
1894                 $toolbar = "<div id='toolbar'>\n";
1895                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1896
1897                 foreach($toolarray as $tool) {
1898                         $params = array(
1899                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
1900                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1901                                 // Older browsers show a "speedtip" type message only for ALT.
1902                                 // Ideally these should be different, realistically they
1903                                 // probably don't need to be.
1904                                 $tip = $tool['tip'],
1905                                 $open = $tool['open'],
1906                                 $close = $tool['close'],
1907                                 $sample = $tool['sample'],
1908                                 $cssId = $tool['id'],
1909                         );
1910
1911                         $paramList = implode( ',',
1912                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
1913                         $toolbar.="addButton($paramList);\n";
1914                 }
1915
1916                 $toolbar.="/*]]>*/\n</script>";
1917                 $toolbar.="\n</div>";
1918                 return $toolbar;
1919         }
1920
1921         /**
1922          * Returns an array of html code of the following checkboxes:
1923          * minor and watch
1924          *
1925          * @param $tabindex Current tabindex
1926          * @param $skin Skin object
1927          * @param $checked Array of checkbox => bool, where bool indicates the checked
1928          *                 status of the checkbox
1929          *
1930          * @return array
1931          */
1932         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1933                 global $wgUser;
1934
1935                 $checkboxes = array();
1936
1937                 $checkboxes['minor'] = '';
1938                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1939                 if ( $wgUser->isAllowed('minoredit') ) {
1940                         $attribs = array(
1941                                 'tabindex'  => ++$tabindex,
1942                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1943                                 'id'        => 'wpMinoredit',
1944                         );
1945                         $checkboxes['minor'] =
1946                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1947                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1948                 }
1949
1950                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1951                 $checkboxes['watch'] = '';
1952                 if ( $wgUser->isLoggedIn() ) {
1953                         $attribs = array(
1954                                 'tabindex'  => ++$tabindex,
1955                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1956                                 'id'        => 'wpWatchthis',
1957                         );
1958                         $checkboxes['watch'] =
1959                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1960                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1961                 }
1962                 return $checkboxes;
1963         }
1964
1965         /**
1966          * Returns an array of html code of the following buttons:
1967          * save, diff, preview and live
1968          *
1969          * @param $tabindex Current tabindex
1970          *
1971          * @return array
1972          */
1973         public function getEditButtons(&$tabindex) {
1974                 global $wgLivePreview, $wgUser;
1975
1976                 $buttons = array();
1977
1978                 $temp = array(
1979                         'id'        => 'wpSave',
1980                         'name'      => 'wpSave',
1981                         'type'      => 'submit',
1982                         'tabindex'  => ++$tabindex,
1983                         'value'     => wfMsg('savearticle'),
1984                         'accesskey' => wfMsg('accesskey-save'),
1985                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1986                 );
1987                 $buttons['save'] = Xml::element('input', $temp, '');
1988
1989                 ++$tabindex; // use the same for preview and live preview
1990                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1991                         $temp = array(
1992                                 'id'        => 'wpPreview',
1993                                 'name'      => 'wpPreview',
1994                                 'type'      => 'submit',
1995                                 'tabindex'  => $tabindex,
1996                                 'value'     => wfMsg('showpreview'),
1997                                 'accesskey' => '',
1998                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1999                                 'style'     => 'display: none;',
2000                         );
2001                         $buttons['preview'] = Xml::element('input', $temp, '');
2002
2003                         $temp = array(
2004                                 'id'        => 'wpLivePreview',
2005                                 'name'      => 'wpLivePreview',
2006                                 'type'      => 'submit',
2007                                 'tabindex'  => $tabindex,
2008                                 'value'     => wfMsg('showlivepreview'),
2009                                 'accesskey' => wfMsg('accesskey-preview'),
2010                                 'title'     => '',
2011                                 'onclick'   => $this->doLivePreviewScript(),
2012                         );
2013                         $buttons['live'] = Xml::element('input', $temp, '');
2014                 } else {
2015                         $temp = array(
2016                                 'id'        => 'wpPreview',
2017                                 'name'      => 'wpPreview',
2018                                 'type'      => 'submit',
2019                                 'tabindex'  => $tabindex,
2020                                 'value'     => wfMsg('showpreview'),
2021                                 'accesskey' => wfMsg('accesskey-preview'),
2022                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2023                         );
2024                         $buttons['preview'] = Xml::element('input', $temp, '');
2025                         $buttons['live'] = '';
2026                 }
2027
2028                 $temp = array(
2029                         'id'        => 'wpDiff',
2030                         'name'      => 'wpDiff',
2031                         'type'      => 'submit',
2032                         'tabindex'  => ++$tabindex,
2033                         'value'     => wfMsg('showdiff'),
2034                         'accesskey' => wfMsg('accesskey-diff'),
2035                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
2036                 );
2037                 $buttons['diff'] = Xml::element('input', $temp, '');
2038
2039                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
2040                 return $buttons;
2041         }
2042
2043         /**
2044          * Output preview text only. This can be sucked into the edit page
2045          * via JavaScript, and saves the server time rendering the skin as
2046          * well as theoretically being more robust on the client (doesn't
2047          * disturb the edit box's undo history, won't eat your text on
2048          * failure, etc).
2049          *
2050          * @todo This doesn't include category or interlanguage links.
2051          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2052          *       or something...</s> that might also require more skin
2053          *       initialization, so check whether that's a problem.
2054          */
2055         function livePreview() {
2056                 global $wgOut;
2057                 $wgOut->disable();
2058                 header( 'Content-type: text/xml; charset=utf-8' );
2059                 header( 'Cache-control: no-cache' );
2060
2061                 $previewText = $this->getPreviewText();
2062                 #$categories = $skin->getCategoryLinks();
2063
2064                 $s =
2065                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2066                 Xml::tags( 'livepreview', null,
2067                         Xml::element( 'preview', null, $previewText )
2068                         #.      Xml::element( 'category', null, $categories )
2069                 );
2070                 echo $s;
2071         }
2072
2073
2074         /**
2075          * Get a diff between the current contents of the edit box and the
2076          * version of the page we're editing from.
2077          *
2078          * If this is a section edit, we'll replace the section as for final
2079          * save and then make a comparison.
2080          */
2081         function showDiff() {
2082                 $oldtext = $this->mArticle->fetchContent();
2083                 $newtext = $this->mArticle->replaceSection(
2084                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2085                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2086                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2087                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2088                 if ( $oldtext !== false  || $newtext != '' ) {
2089                         $de = new DifferenceEngine( $this->mTitle );
2090                         $de->setText( $oldtext, $newtext );
2091                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2092                         $de->showDiffStyle();
2093                 } else {
2094                         $difftext = '';
2095                 }
2096
2097                 global $wgOut;
2098                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
2099         }
2100
2101         /**
2102          * Filter an input field through a Unicode de-armoring process if it
2103          * came from an old browser with known broken Unicode editing issues.
2104          *
2105          * @param WebRequest $request
2106          * @param string $field
2107          * @return string
2108          * @private
2109          */
2110         function safeUnicodeInput( $request, $field ) {
2111                 $text = rtrim( $request->getText( $field ) );
2112                 return $request->getBool( 'safemode' )
2113                         ? $this->unmakesafe( $text )
2114                         : $text;
2115         }
2116
2117         /**
2118          * Filter an output field through a Unicode armoring process if it is
2119          * going to an old browser with known broken Unicode editing issues.
2120          *
2121          * @param string $text
2122          * @return string
2123          * @private
2124          */
2125         function safeUnicodeOutput( $text ) {
2126                 global $wgContLang;
2127                 $codedText = $wgContLang->recodeForEdit( $text );
2128                 return $this->checkUnicodeCompliantBrowser()
2129                         ? $codedText
2130                         : $this->makesafe( $codedText );
2131         }
2132
2133         /**
2134          * A number of web browsers are known to corrupt non-ASCII characters
2135          * in a UTF-8 text editing environment. To protect against this,
2136          * detected browsers will be served an armored version of the text,
2137          * with non-ASCII chars converted to numeric HTML character references.
2138          *
2139          * Preexisting such character references will have a 0 added to them
2140          * to ensure that round-trips do not alter the original data.
2141          *
2142          * @param string $invalue
2143          * @return string
2144          * @private
2145          */
2146         function makesafe( $invalue ) {
2147                 // Armor existing references for reversability.
2148                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2149
2150                 $bytesleft = 0;
2151                 $result = "";
2152                 $working = 0;
2153                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2154                         $bytevalue = ord( $invalue{$i} );
2155                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
2156                                 $result .= chr( $bytevalue );
2157                                 $bytesleft = 0;
2158                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2159                                 $working = $working << 6;
2160                                 $working += ($bytevalue & 0x3F);
2161                                 $bytesleft--;
2162                                 if( $bytesleft <= 0 ) {
2163                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2164                                 }
2165                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2166                                 $working = $bytevalue & 0x1F;
2167                                 $bytesleft = 1;
2168                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2169                                 $working = $bytevalue & 0x0F;
2170                                 $bytesleft = 2;
2171                         } else { //1111 0xxx
2172                                 $working = $bytevalue & 0x07;
2173                                 $bytesleft = 3;
2174                         }
2175                 }
2176                 return $result;
2177         }
2178
2179         /**
2180          * Reverse the previously applied transliteration of non-ASCII characters
2181          * back to UTF-8. Used to protect data from corruption by broken web browsers
2182          * as listed in $wgBrowserBlackList.
2183          *
2184          * @param string $invalue
2185          * @return string
2186          * @private
2187          */
2188         function unmakesafe( $invalue ) {
2189                 $result = "";
2190                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2191                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2192                                 $i += 3;
2193                                 $hexstring = "";
2194                                 do {
2195                                         $hexstring .= $invalue{$i};
2196                                         $i++;
2197                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2198
2199                                 // Do some sanity checks. These aren't needed for reversability,
2200                                 // but should help keep the breakage down if the editor
2201                                 // breaks one of the entities whilst editing.
2202                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2203                                         $codepoint = hexdec($hexstring);
2204                                         $result .= codepointToUtf8( $codepoint );
2205                                 } else {
2206                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2207                                 }
2208                         } else {
2209                                 $result .= substr( $invalue, $i, 1 );
2210                         }
2211                 }
2212                 // reverse the transform that we made for reversability reasons.
2213                 return strtr( $result, array( "&#x0" => "&#x" ) );
2214         }
2215
2216         function noCreatePermission() {
2217                 global $wgOut;
2218                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2219                 $wgOut->addWikiMsg( 'nocreatetext' );
2220         }
2221
2222         /**
2223          * If there are rows in the deletion log for this page, show them,
2224          * along with a nice little note for the user
2225          *
2226          * @param OutputPage $out
2227          */
2228         private function showDeletionLog( $out ) {
2229                 global $wgUser;
2230                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
2231                 $pager = new LogPager( $loglist, 'delete', false, $this->mTitle->getPrefixedText() );
2232                 if( $pager->getNumRows() > 0 ) {
2233                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2234                         $out->addWikiMsg( 'recreate-deleted-warn' );
2235                         $out->addHTML(
2236                                 $loglist->beginLogEventsList() .
2237                                 $pager->getBody() .
2238                                 $loglist->endLogEventsList()
2239                         );
2240                         $out->addHtml( '</div>' );
2241                 }
2242         }
2243
2244         /**
2245          * Attempt submission
2246          * @return bool false if output is done, true if the rest of the form should be displayed
2247          */
2248         function attemptSave() {
2249                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2250
2251                 $resultDetails = false;
2252                 $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
2253
2254                 if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2255                         $this->didSave = true;
2256                 }
2257
2258                 switch ($value) {
2259                         case self::AS_HOOK_ERROR_EXPECTED:
2260                         case self::AS_CONTENT_TOO_BIG:
2261                         case self::AS_ARTICLE_WAS_DELETED:
2262                         case self::AS_CONFLICT_DETECTED:
2263                         case self::AS_SUMMARY_NEEDED:
2264                         case self::AS_TEXTBOX_EMPTY:
2265                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2266                         case self::AS_END:
2267                                 return true;
2268
2269                         case self::AS_HOOK_ERROR:
2270                         case self::AS_FILTERING:
2271                         case self::AS_SUCCESS_NEW_ARTICLE:
2272                         case self::AS_SUCCESS_UPDATE:
2273                                 return false;
2274
2275                         case self::AS_SPAM_ERROR:
2276                                 $this->spamPage ( $resultDetails['spam'] );
2277                                 return false;
2278
2279                         case self::AS_BLOCKED_PAGE_FOR_USER:
2280                                 $this->blockedPage();
2281                                 return false;
2282
2283                         case self::AS_IMAGE_REDIRECT_ANON:
2284                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2285                                 return false;
2286
2287                         case self::AS_READ_ONLY_PAGE_ANON:
2288                                 $this->userNotLoggedInPage();
2289                                 return false;
2290
2291                         case self::AS_READ_ONLY_PAGE_LOGGED:
2292                         case self::AS_READ_ONLY_PAGE:
2293                                 $wgOut->readOnlyPage();
2294                                 return false;
2295
2296                         case self::AS_RATE_LIMITED:
2297                                 $wgOut->rateLimited();
2298                                 return false;
2299
2300                         case self::AS_NO_CREATE_PERMISSION;
2301                                 $this->noCreatePermission();
2302                                 return;
2303
2304                         case self::AS_BLANK_ARTICLE:
2305                                 $wgOut->redirect( $wgTitle->getFullURL() );
2306                                 return false;
2307
2308                         case self::AS_IMAGE_REDIRECT_LOGGED:
2309                                 $wgOut->permissionRequired( 'upload' );
2310                                 return false;
2311                 }
2312         }
2313 }