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