includes/EditPage.php

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