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