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 $wgOut, $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 = $text;
 112
 113                                         #No use doing a merge if it's just a straight revert.
 114                                         if ($currev_text != $undorev_text) {
 115                                                 $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
 116                                         } else {
 117                                                 $text = $oldrev_text;
 118                                                 $result = true;
 119                                         }
 120
 121                                         if( $result ) {
 122                                                 # Inform the user of our success and set an automatic edit summary
 123                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 124                                                 $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 125                                         } else {
 126                                                 # Warn the user that something went wrong
 127                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 128                                         }
 129
 130                                 }
 131                         }
 132                         else if( $section != '' ) {
 133                                 if( $section == 'new' ) {
 134                                         $text = $this->getPreloadedText( $preload );
 135                                 } else {
 136                                         $text = $wgParser->getSection( $text, $section );
 137                                 }
 138                         }
 139                 }
 140
 141                 wfProfileOut( __METHOD__ );
 142                 return $text;
 143         }
 144
 145         /**
 146          * Get the contents of a page from its title and remove includeonly tags
 147          *
 148          * @param $preload String: the title of the page.
 149          * @return string The contents of the page.
 150          */
 151         private function getPreloadedText($preload) {
 152                 if ( $preload === '' )
 153                         return '';
 154                 else {
 155                         $preloadTitle = Title::newFromText( $preload );
 156                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 157                                 $rev=Revision::newFromTitle($preloadTitle);
 158                                 if ( is_object( $rev ) ) {
 159                                         $text = $rev->getText();
 160                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 161                                         // its own mini-parser! -ævar
 162                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 163                                         return $text;
 164                                 } else
 165                                         return '';
 166                         }
 167                 }
 168         }
 169
 170         /**
 171          * This is the function that extracts metadata from the article body on the first view.
 172          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 173          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 174          */
 175         function extractMetaDataFromArticle () {
 176                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 177                 $this->mMetaData = '' ;
 178                 if ( !$wgUseMetadataEdit ) return ;
 179                 if ( $wgMetadataWhitelist == '' ) return ;
 180                 $s = '' ;
 181                 $t = $this->getContent();
 182
 183                 # MISSING : <nowiki> filtering
 184
 185                 # Categories and language links
 186                 $t = explode ( "\n" , $t ) ;
 187                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 188                 $cat = $ll = array() ;
 189                 foreach ( $t AS $key => $x )
 190                 {
 191                         $y = trim ( strtolower ( $x ) ) ;
 192                         while ( substr ( $y , 0 , 2 ) == '[[' )
 193                         {
 194                                 $y = explode ( ']]' , trim ( $x ) ) ;
 195                                 $first = array_shift ( $y ) ;
 196                                 $first = explode ( ':' , $first ) ;
 197                                 $ns = array_shift ( $first ) ;
 198                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 199                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 200                                 {
 201                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 202                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 203                                         else $ll[] = $add ;
 204                                         $x = implode ( ']]' , $y ) ;
 205                                         $t[$key] = $x ;
 206                                         $y = trim ( strtolower ( $x ) ) ;
 207                                 }
 208                         }
 209                 }
 210                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 211                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 212                 $t = implode ( "\n" , $t ) ;
 213
 214                 # Load whitelist
 215                 $sat = array () ; # stand-alone-templates; must be lowercase
 216                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 217                 $wl_article = new Article ( $wl_title ) ;
 218                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 219                 foreach ( $wl AS $x )
 220                 {
 221                         $isentry = false ;
 222                         $x = trim ( $x ) ;
 223                         while ( substr ( $x , 0 , 1 ) == '*' )
 224                         {
 225                                 $isentry = true ;
 226                                 $x = trim ( substr ( $x , 1 ) ) ;
 227                         }
 228                         if ( $isentry )
 229                         {
 230                                 $sat[] = strtolower ( $x ) ;
 231                         }
 232
 233                 }
 234
 235                 # Templates, but only some
 236                 $t = explode ( '{{' , $t ) ;
 237                 $tl = array () ;
 238                 foreach ( $t AS $key => $x )
 239                 {
 240                         $y = explode ( '}}' , $x , 2 ) ;
 241                         if ( count ( $y ) == 2 )
 242                         {
 243                                 $z = $y[0] ;
 244                                 $z = explode ( '|' , $z ) ;
 245                                 $tn = array_shift ( $z ) ;
 246                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 247                                 {
 248                                         $tl[] = '{{' . $y[0] . '}}' ;
 249                                         $t[$key] = $y[1] ;
 250                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 251                                 }
 252                                 else $t[$key] = '{{' . $x ;
 253                         }
 254                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 255                         else $t[$key] = $x ;
 256                 }
 257                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 258                 $t = implode ( '' , $t ) ;
 259
 260                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 261                 $this->mArticle->mContent = $t ;
 262                 $this->mMetaData = $s ;
 263         }
 264
 265         function submit() {
 266                 $this->edit();
 267         }
 268
 269         /**
 270          * This is the function that gets called for "action=edit". It
 271          * sets up various member variables, then passes execution to
 272          * another function, usually showEditForm()
 273          *
 274          * The edit form is self-submitting, so that when things like
 275          * preview and edit conflicts occur, we get the same form back
 276          * with the extra stuff added.  Only when the final submission
 277          * is made and all is well do we actually save and redirect to
 278          * the newly-edited page.
 279          */
 280         function edit() {
 281                 global $wgOut, $wgUser, $wgRequest, $wgTitle;
 282                 global $wgEmailConfirmToEdit;
 283
 284                 if ( ! wfRunHooks( 'AlternateEdit', array( &$this  ) ) )
 285                         return;
 286
 287                 $fname = 'EditPage::edit';
 288                 wfProfileIn( $fname );
 289                 wfDebug( "$fname: enter\n" );
 290
 291                 // this is not an article
 292                 $wgOut->setArticleFlag(false);
 293
 294                 $this->importFormData( $wgRequest );
 295                 $this->firsttime = false;
 296
 297                 if( $this->live ) {
 298                         $this->livePreview();
 299                         wfProfileOut( $fname );
 300                         return;
 301                 }
 302
 303                 if ( ! $this->mTitle->userCanEdit() ) {
 304                         wfDebug( "$fname: user can't edit\n" );
 305                         $wgOut->readOnlyPage( $this->getContent(), true );
 306                         wfProfileOut( $fname );
 307                         return;
 308                 }
 309                 wfDebug( "$fname: Checking blocks\n" );
 310                 if ( !$this->preview && !$this->diff && $wgUser->isBlockedFrom( $this->mTitle, !$this->save ) ) {
 311                         # When previewing, don't check blocked state - will get caught at save time.
 312                         # Also, check when starting edition is done against slave to improve performance.
 313                         wfDebug( "$fname: user is blocked\n" );
 314                         $this->blockedPage();
 315                         wfProfileOut( $fname );
 316                         return;
 317                 }
 318                 if ( !$wgUser->isAllowed('edit') ) {
 319                         if ( $wgUser->isAnon() ) {
 320                                 wfDebug( "$fname: user must log in\n" );
 321                                 $this->userNotLoggedInPage();
 322                                 wfProfileOut( $fname );
 323                                 return;
 324                         } else {
 325                                 wfDebug( "$fname: read-only page\n" );
 326                                 $wgOut->readOnlyPage( $this->getContent(), true );
 327                                 wfProfileOut( $fname );
 328                                 return;
 329                         }
 330                 }
 331                 if ($wgEmailConfirmToEdit && !$wgUser->isEmailConfirmed()) {
 332                         wfDebug("$fname: user must confirm e-mail address\n");
 333                         $this->userNotConfirmedPage();
 334                         wfProfileOut($fname);
 335                         return;
 336                 }
 337                 if ( !$this->mTitle->userCanCreate() && !$this->mTitle->exists() ) {
 338                         wfDebug( "$fname: no create permission\n" );
 339                         $this->noCreatePermission();
 340                         wfProfileOut( $fname );
 341                         return;
 342                 }
 343                 if ( wfReadOnly() ) {
 344                         wfDebug( "$fname: read-only mode is engaged\n" );
 345                         if( $this->save || $this->preview ) {
 346                                 $this->formtype = 'preview';
 347                         } else if ( $this->diff ) {
 348                                 $this->formtype = 'diff';
 349                         } else {
 350                                 $wgOut->readOnlyPage( $this->getContent() );
 351                                 wfProfileOut( $fname );
 352                                 return;
 353                         }
 354                 } else {
 355                         if ( $this->save ) {
 356                                 $this->formtype = 'save';
 357                         } else if ( $this->preview ) {
 358                                 $this->formtype = 'preview';
 359                         } else if ( $this->diff ) {
 360                                 $this->formtype = 'diff';
 361                         } else { # First time through
 362                                 $this->firsttime = true;
 363                                 if( $this->previewOnOpen() ) {
 364                                         $this->formtype = 'preview';
 365                                 } else {
 366                                         $this->extractMetaDataFromArticle () ;
 367                                         $this->formtype = 'initial';
 368                                 }
 369                         }
 370                 }
 371
 372                 wfProfileIn( "$fname-business-end" );
 373
 374                 $this->isConflict = false;
 375                 // css / js subpages of user pages get a special treatment
 376                 $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
 377                 $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
 378
 379                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 380                  * no matter it's current state
 381                  */
 382                 $this->deletedSinceEdit = false;
 383                 if ( $this->edittime != '' ) {
 384                         /* Note that we rely on logging table, which hasn't been always there,
 385                          * but that doesn't matter, because this only applies to brand new
 386                          * deletes. This is done on every preview and save request. Move it further down
 387                          * to only perform it on saves
 388                          */
 389                         if ( $this->mTitle->isDeleted() ) {
 390                                 $this->lastDelete = $this->getLastDelete();
 391                                 if ( !is_null($this->lastDelete) ) {
 392                                         $deletetime = $this->lastDelete->log_timestamp;
 393                                         if ( ($deletetime - $this->starttime) > 0 ) {
 394                                                 $this->deletedSinceEdit = true;
 395                                         }
 396                                 }
 397                         }
 398                 }
 399
 400                 if(!$this->mTitle->getArticleID() && ('initial' == $this->formtype || $this->firsttime )) { # new article
 401                         $this->showIntro();
 402                 }
 403                 if( $this->mTitle->isTalkPage() ) {
 404                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 405                 }
 406
 407                 # Attempt submission here.  This will check for edit conflicts,
 408                 # and redundantly check for locked database, blocked IPs, etc.
 409                 # that edit() already checked just in case someone tries to sneak
 410                 # in the back door with a hand-edited submission URL.
 411
 412                 if ( 'save' == $this->formtype ) {
 413                         if ( !$this->attemptSave() ) {
 414                                 wfProfileOut( "$fname-business-end" );
 415                                 wfProfileOut( $fname );
 416                                 return;
 417                         }
 418                 }
 419
 420                 # First time through: get contents, set time for conflict
 421                 # checking, etc.
 422                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 423                         $this->initialiseForm();
 424                         if( !$this->mTitle->getArticleId() )
 425                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 426                 }
 427
 428                 $this->showEditForm();
 429                 wfProfileOut( "$fname-business-end" );
 430                 wfProfileOut( $fname );
 431         }
 432
 433         /**
 434          * Return true if this page should be previewed when the edit form
 435          * is initially opened.
 436          * @return bool
 437          * @private
 438          */
 439         function previewOnOpen() {
 440                 global $wgUser;
 441                 return $this->section != 'new' &&
 442                         ( ( $wgUser->getOption( 'previewonfirst' ) && $this->mTitle->exists() ) ||
 443                                 ( $this->mTitle->getNamespace() == NS_CATEGORY &&
 444                                         !$this->mTitle->exists() ) );
 445         }
 446
 447         /**
 448          * @todo document
 449          * @param $request
 450          */
 451         function importFormData( &$request ) {
 452                 global $wgLang, $wgUser;
 453                 $fname = 'EditPage::importFormData';
 454                 wfProfileIn( $fname );
 455
 456                 if( $request->wasPosted() ) {
 457                         # These fields need to be checked for encoding.
 458                         # Also remove trailing whitespace, but don't remove _initial_
 459                         # whitespace from the text boxes. This may be significant formatting.
 460                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 461                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 462                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 463                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 464                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 465
 466                         $this->edittime = $request->getVal( 'wpEdittime' );
 467                         $this->starttime = $request->getVal( 'wpStarttime' );
 468
 469                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 470
 471                         if( is_null( $this->edittime ) ) {
 472                                 # If the form is incomplete, force to preview.
 473                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 474                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 475                                 $this->preview  = true;
 476                         } else {
 477                                 /* Fallback for live preview */
 478                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 479                                 $this->diff = $request->getCheck( 'wpDiff' );
 480
 481                                 // Remember whether a save was requested, so we can indicate
 482                                 // if we forced preview due to session failure.
 483                                 $this->mTriedSave = !$this->preview;
 484
 485                                 if ( $this->tokenOk( $request ) ) {
 486                                         # Some browsers will not report any submit button
 487                                         # if the user hits enter in the comment box.
 488                                         # The unmarked state will be assumed to be a save,
 489                                         # if the form seems otherwise complete.
 490                                         wfDebug( "$fname: Passed token check.\n" );
 491                                 } else if ( $this->diff ) {
 492                                         # Failed token check, but only requested "Show Changes".
 493                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 494                                 } else {
 495                                         # Page might be a hack attempt posted from
 496                                         # an external site. Preview instead of saving.
 497                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 498                                         $this->preview = true;
 499                                 }
 500                         }
 501                         $this->save    = ! ( $this->preview OR $this->diff );
 502                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 503                                 $this->edittime = null;
 504                         }
 505
 506                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 507                                 $this->starttime = null;
 508                         }
 509
 510                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 511
 512                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 513                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 514
 515                         # Don't force edit summaries when a user is editing their own user or talk page
 516                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 517                                 $this->allowBlankSummary = true;
 518                         } else {
 519                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 520                         }
 521
 522                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 523                 } else {
 524                         # Not a posted form? Start with nothing.
 525                         wfDebug( "$fname: Not a posted form.\n" );
 526                         $this->textbox1  = '';
 527                         $this->textbox2  = '';
 528                         $this->mMetaData = '';
 529                         $this->summary   = '';
 530                         $this->edittime  = '';
 531                         $this->starttime = wfTimestampNow();
 532                         $this->preview   = false;
 533                         $this->save      = false;
 534                         $this->diff      = false;
 535                         $this->minoredit = false;
 536                         $this->watchthis = false;
 537                         $this->recreate  = false;
 538                 }
 539
 540                 $this->oldid = $request->getInt( 'oldid' );
 541
 542                 # Section edit can come from either the form or a link
 543                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 544
 545                 $this->live = $request->getCheck( 'live' );
 546                 $this->editintro = $request->getText( 'editintro' );
 547
 548                 wfProfileOut( $fname );
 549         }
 550
 551         /**
 552          * Make sure the form isn't faking a user's credentials.
 553          *
 554          * @param $request WebRequest
 555          * @return bool
 556          * @private
 557          */
 558         function tokenOk( &$request ) {
 559                 global $wgUser;
 560                 if( $wgUser->isAnon() ) {
 561                         # Anonymous users may not have a session
 562                         # open. Check for suffix anyway.
 563                         $this->mTokenOk = ( EDIT_TOKEN_SUFFIX == $request->getVal( 'wpEditToken' ) );
 564                 } else {
 565                         $this->mTokenOk = $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 566                 }
 567                 return $this->mTokenOk;
 568         }
 569
 570         /** */
 571         function showIntro() {
 572                 global $wgOut, $wgUser;
 573                 $addstandardintro=true;
 574                 if($this->editintro) {
 575                         $introtitle=Title::newFromText($this->editintro);
 576                         if(isset($introtitle) && $introtitle->userCanRead()) {
 577                                 $rev=Revision::newFromTitle($introtitle);
 578                                 if($rev) {
 579                                         $wgOut->addSecondaryWikiText($rev->getText());
 580                                         $addstandardintro=false;
 581                                 }
 582                         }
 583                 }
 584                 if($addstandardintro) {
 585                         if ( $wgUser->isLoggedIn() )
 586                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 587                         else
 588                                 $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
 589                 }
 590         }
 591
 592         /**
 593          * Attempt submission
 594          * @return bool false if output is done, true if the rest of the form should be displayed
 595          */
 596         function attemptSave() {
 597                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
 598                 global $wgMaxArticleSize;
 599
 600                 $fname = 'EditPage::attemptSave';
 601                 wfProfileIn( $fname );
 602                 wfProfileIn( "$fname-checks" );
 603
 604                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 605                 {
 606                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 607                         return false;
 608                 }
 609
 610                 # Reintegrate metadata
 611                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 612                 $this->mMetaData = '' ;
 613
 614                 # Check for spam
 615                 $matches = array();
 616                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 617                         $this->spamPage ( $matches[0] );
 618                         wfProfileOut( "$fname-checks" );
 619                         wfProfileOut( $fname );
 620                         return false;
 621                 }
 622                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 623                         # Error messages or other handling should be performed by the filter function
 624                         wfProfileOut( $fname );
 625                         wfProfileOut( "$fname-checks" );
 626                         return false;
 627                 }
 628                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 629                         # Error messages etc. could be handled within the hook...
 630                         wfProfileOut( $fname );
 631                         wfProfileOut( "$fname-checks" );
 632                         return false;
 633                 } elseif( $this->hookError != '' ) {
 634                         # ...or the hook could be expecting us to produce an error
 635                         wfProfileOut( "$fname-checks " );
 636                         wfProfileOut( $fname );
 637                         return true;
 638                 }
 639                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 640                         # Check block state against master, thus 'false'.
 641                         $this->blockedPage();
 642                         wfProfileOut( "$fname-checks" );
 643                         wfProfileOut( $fname );
 644                         return false;
 645                 }
 646                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 647                 if ( $this->kblength > $wgMaxArticleSize ) {
 648                         // Error will be displayed by showEditForm()
 649                         $this->tooBig = true;
 650                         wfProfileOut( "$fname-checks" );
 651                         wfProfileOut( $fname );
 652                         return true;
 653                 }
 654
 655                 if ( !$wgUser->isAllowed('edit') ) {
 656                         if ( $wgUser->isAnon() ) {
 657                                 $this->userNotLoggedInPage();
 658                                 wfProfileOut( "$fname-checks" );
 659                                 wfProfileOut( $fname );
 660                                 return false;
 661                         }
 662                         else {
 663                                 $wgOut->readOnlyPage();
 664                                 wfProfileOut( "$fname-checks" );
 665                                 wfProfileOut( $fname );
 666                                 return false;
 667                         }
 668                 }
 669
 670                 if ( wfReadOnly() ) {
 671                         $wgOut->readOnlyPage();
 672                         wfProfileOut( "$fname-checks" );
 673                         wfProfileOut( $fname );
 674                         return false;
 675                 }
 676                 if ( $wgUser->pingLimiter() ) {
 677                         $wgOut->rateLimited();
 678                         wfProfileOut( "$fname-checks" );
 679                         wfProfileOut( $fname );
 680                         return false;
 681                 }
 682
 683                 # If the article has been deleted while editing, don't save it without
 684                 # confirmation
 685                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 686                         wfProfileOut( "$fname-checks" );
 687                         wfProfileOut( $fname );
 688                         return true;
 689                 }
 690
 691                 wfProfileOut( "$fname-checks" );
 692
 693                 # If article is new, insert it.
 694                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 695                 if ( 0 == $aid ) {
 696
 697                         // Late check for create permission, just in case *PARANOIA*
 698                         if ( !$this->mTitle->userCanCreate() ) {
 699                                 wfDebug( "$fname: no create permission\n" );
 700                                 $this->noCreatePermission();
 701                                 wfProfileOut( $fname );
 702                                 return;
 703                         }
 704
 705                         # Don't save a new article if it's blank.
 706                         if ( ( '' == $this->textbox1 ) ) {
 707                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 708                                         wfProfileOut( $fname );
 709                                         return false;
 710                         }
 711
 712                         $isComment=($this->section=='new');
 713                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 714                                 $this->minoredit, $this->watchthis, false, $isComment);
 715
 716                         wfProfileOut( $fname );
 717                         return false;
 718                 }
 719
 720                 # Article exists. Check for edit conflict.
 721
 722                 $this->mArticle->clear(); # Force reload of dates, etc.
 723                 $this->mArticle->forUpdate( true ); # Lock the article
 724
 725                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 726                         $this->isConflict = true;
 727                         if( $this->section == 'new' ) {
 728                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 729                                         $this->mArticle->getComment() == $this->summary ) {
 730                                         // Probably a duplicate submission of a new comment.
 731                                         // This can happen when squid resends a request after
 732                                         // a timeout but the first one actually went through.
 733                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 734                                 } else {
 735                                         // New comment; suppress conflict.
 736                                         $this->isConflict = false;
 737                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 738                                 }
 739                         }
 740                 }
 741                 $userid = $wgUser->getID();
 742
 743                 if ( $this->isConflict) {
 744                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 745                                 $this->mArticle->getTimestamp() . "'\n" );
 746                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 747                 }
 748                 else {
 749                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 750                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 751                 }
 752                 if( is_null( $text ) ) {
 753                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 754                         $this->isConflict = true;
 755                         $text = $this->textbox1;
 756                 }
 757
 758                 # Suppress edit conflict with self, except for section edits where merging is required.
 759                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 760                         wfDebug( "Suppressing edit conflict, same user.\n" );
 761                         $this->isConflict = false;
 762                 } else {
 763                         # switch from section editing to normal editing in edit conflict
 764                         if($this->isConflict) {
 765                                 # Attempt merge
 766                                 if( $this->mergeChangesInto( $text ) ){
 767                                         // Successful merge! Maybe we should tell the user the good news?
 768                                         $this->isConflict = false;
 769                                         wfDebug( "Suppressing edit conflict, successful merge.\n" );
 770                                 } else {
 771                                         $this->section = '';
 772                                         $this->textbox1 = $text;
 773                                         wfDebug( "Keeping edit conflict, failed merge.\n" );
 774                                 }
 775                         }
 776                 }
 777
 778                 if ( $this->isConflict ) {
 779                         wfProfileOut( $fname );
 780                         return true;
 781                 }
 782
 783                 $oldtext = $this->mArticle->getContent();
 784
 785                 # Handle the user preference to force summaries here, but not for null edits
 786                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 787                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 788                         if( md5( $this->summary ) == $this->autoSumm ) {
 789                                 $this->missingSummary = true;
 790                                 wfProfileOut( $fname );
 791                                 return( true );
 792                         }
 793                 }
 794
 795                 #And a similar thing for new sections
 796                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 797                         if (trim($this->summary) == '') {
 798                                 $this->missingSummary = true;
 799                                 wfProfileOut( $fname );
 800                                 return( true );
 801                         }
 802                 }
 803
 804                 # All's well
 805                 wfProfileIn( "$fname-sectionanchor" );
 806                 $sectionanchor = '';
 807                 if( $this->section == 'new' ) {
 808                         if ( $this->textbox1 == '' ) {
 809                                 $this->missingComment = true;
 810                                 return true;
 811                         }
 812                         if( $this->summary != '' ) {
 813                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 814                         }
 815                 } elseif( $this->section != '' ) {
 816                         # Try to get a section anchor from the section source, redirect to edited section if header found
 817                         # XXX: might be better to integrate this into Article::replaceSection
 818                         # for duplicate heading checking and maybe parsing
 819                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 820                         # we can't deal with anchors, includes, html etc in the header for now,
 821                         # headline would need to be parsed to improve this
 822                         if($hasmatch and strlen($matches[2]) > 0) {
 823                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 824                         }
 825                 }
 826                 wfProfileOut( "$fname-sectionanchor" );
 827
 828                 // Save errors may fall down to the edit form, but we've now
 829                 // merged the section into full text. Clear the section field
 830                 // so that later submission of conflict forms won't try to
 831                 // replace that into a duplicated mess.
 832                 $this->textbox1 = $text;
 833                 $this->section = '';
 834
 835                 // Check for length errors again now that the section is merged in
 836                 $this->kblength = (int)(strlen( $text ) / 1024);
 837                 if ( $this->kblength > $wgMaxArticleSize ) {
 838                         $this->tooBig = true;
 839                         wfProfileOut( $fname );
 840                         return true;
 841                 }
 842
 843                 # update the article here
 844                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 845                         $this->watchthis, '', $sectionanchor ) ) {
 846                         wfProfileOut( $fname );
 847                         return false;
 848                 } else {
 849                         $this->isConflict = true;
 850                 }
 851                 wfProfileOut( $fname );
 852                 return true;
 853         }
 854
 855         /**
 856          * Initialise form fields in the object
 857          * Called on the first invocation, e.g. when a user clicks an edit link
 858          */
 859         function initialiseForm() {
 860                 $this->edittime = $this->mArticle->getTimestamp();
 861                 $this->summary = '';
 862                 $this->textbox1 = $this->getContent();
 863                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 864                         $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() ) ;
 865                 wfProxyCheck();
 866         }
 867
 868         /**
 869          * Send the edit form and related headers to $wgOut
 870          * @param $formCallback Optional callable that takes an OutputPage
 871          *                      parameter; will be called during form output
 872          *                      near the top, for captchas and the like.
 873          */
 874         function showEditForm( $formCallback=null ) {
 875                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 876
 877                 $fname = 'EditPage::showEditForm';
 878                 wfProfileIn( $fname );
 879
 880                 $sk =& $wgUser->getSkin();
 881
 882                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 883
 884                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 885
 886                 # Enabled article-related sidebar, toplinks, etc.
 887                 $wgOut->setArticleRelated( true );
 888
 889                 if ( $this->isConflict ) {
 890                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 891                         $wgOut->setPageTitle( $s );
 892                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 893
 894                         $this->textbox2 = $this->textbox1;
 895                         $this->textbox1 = $this->getContent();
 896                         $this->edittime = $this->mArticle->getTimestamp();
 897                 } else {
 898
 899                         if( $this->section != '' ) {
 900                                 if( $this->section == 'new' ) {
 901                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 902                                 } else {
 903                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 904                                         $matches = array();
 905                                         if( !$this->summary && !$this->preview && !$this->diff ) {
 906                                                 preg_match( "/^(=+)(.+)\\1/mi",
 907                                                         $this->textbox1,
 908                                                         $matches );
 909                                                 if( !empty( $matches[2] ) ) {
 910                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 911                                                 }
 912                                         }
 913                                 }
 914                         } else {
 915                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 916                         }
 917                         $wgOut->setPageTitle( $s );
 918
 919                         if ( $this->missingComment ) {
 920                                 $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
 921                         }
 922
 923                         if( $this->missingSummary && $this->section != 'new' ) {
 924                                 $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
 925                         }
 926
 927                         if( $this->missingSummary && $this->section == 'new' ) {
 928                                 $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
 929                         }
 930
 931                         if( !$this->hookError == '' ) {
 932                                 $wgOut->addWikiText( $this->hookError );
 933                         }
 934
 935                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 936                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 937                         }
 938                         if ( isset( $this->mArticle )
 939                              && isset( $this->mArticle->mRevision )
 940                              && !$this->mArticle->mRevision->isCurrent() ) {
 941                                 $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
 942                                 $wgOut->addWikiText( wfMsg( 'editingold' ) );
 943                         }
 944                 }
 945
 946                 if( wfReadOnly() ) {
 947                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 948                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
 949                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
 950                 } else {
 951                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
 952                                 # Check the skin exists
 953                                 if( $this->isValidCssJsSubpage ) {
 954                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
 955                                 } else {
 956                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
 957                                 }
 958                         }
 959                 }
 960
 961                 if( $this->mTitle->isProtected( 'edit' ) ) {
 962                         # Is the protection due to the namespace, e.g. interface text?
 963                         if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 964                                 # Yes; remind the user
 965                                 $notice = wfMsg( 'editinginterface' );
 966                         } elseif( $this->mTitle->isSemiProtected() ) {
 967                                 # No; semi protected
 968                                 $notice = wfMsg( 'semiprotectedpagewarning' );
 969                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' ) {
 970                                         $notice = '';
 971                                 }
 972                         } else {
 973                                 # No; regular protection
 974                                 $notice = wfMsg( 'protectedpagewarning' );
 975                         }
 976                         $wgOut->addWikiText( $notice );
 977                 }
 978
 979                 if ( $this->kblength === false ) {
 980                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 981                 }
 982                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
 983                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
 984                 } elseif( $this->kblength > 29 ) {
 985                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
 986                 }
 987
 988                 #need to parse the preview early so that we know which templates are used,
 989                 #otherwise users with "show preview after edit box" will get a blank list
 990                 if ( $this->formtype == 'preview' ) {
 991                         $previewOutput = $this->getPreviewText();
 992                 }
 993
 994                 $rows = $wgUser->getIntOption( 'rows' );
 995                 $cols = $wgUser->getIntOption( 'cols' );
 996
 997                 $ew = $wgUser->getOption( 'editwidth' );
 998                 if ( $ew ) $ew = " style=\"width:100%\"";
 999                 else $ew = '';
1000
1001                 $q = 'action=submit';
1002                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1003                 $action = $this->mTitle->escapeLocalURL( $q );
1004
1005                 $summary = wfMsg('summary');
1006                 $subject = wfMsg('subject');
1007                 $minor   = wfMsgExt('minoredit', array('parseinline'));
1008                 $watchthis = wfMsgExt('watchthis', array('parseinline'));
1009
1010                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
1011                                 wfMsgExt('cancel', array('parseinline')) );
1012                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1013                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1014                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1015                         htmlspecialchars( wfMsg( 'newwindow' ) );
1016
1017                 global $wgRightsText;
1018                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
1019                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
1020                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1021                                 $wgRightsText ) . "\n</div>";
1022
1023                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1024                         # prepare toolbar for edit buttons
1025                         $toolbar = $this->getEditToolbar();
1026                 } else {
1027                         $toolbar = '';
1028                 }
1029
1030                 // activate checkboxes if user wants them to be always active
1031                 if( !$this->preview && !$this->diff ) {
1032                         # Sort out the "watch" checkbox
1033                         if( $wgUser->getOption( 'watchdefault' ) ) {
1034                                 # Watch all edits
1035                                 $this->watchthis = true;
1036                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1037                                 # Watch creations
1038                                 $this->watchthis = true;
1039                         } elseif( $this->mTitle->userIsWatching() ) {
1040                                 # Already watched
1041                                 $this->watchthis = true;
1042                         }
1043
1044                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1045                 }
1046
1047                 $minoredithtml = '';
1048
1049                 if ( $wgUser->isAllowed('minoredit') ) {
1050                         $minoredithtml =
1051                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
1052                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />\n".
1053                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>\n";
1054                 }
1055
1056                 $watchhtml = '';
1057
1058                 if ( $wgUser->isLoggedIn() ) {
1059                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".
1060                                 ($this->watchthis?" checked='checked'":"").
1061                                 " accesskey=\"".htmlspecialchars(wfMsg('accesskey-watch'))."\" id='wpWatchthis'  />\n".
1062                                 "<label for='wpWatchthis' title=\"" .
1063                                         htmlspecialchars(wfMsg('tooltip-watch'))."\">{$watchthis}</label>\n";
1064                 }
1065
1066                 $checkboxhtml = $minoredithtml . $watchhtml;
1067
1068                 $wgOut->addHTML( $this->editFormPageTop );
1069
1070                 if ( $wgUser->getOption( 'previewontop' ) ) {
1071
1072                         if ( 'preview' == $this->formtype ) {
1073                                 $this->showPreview( $previewOutput );
1074                         } else {
1075                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1076                         }
1077
1078                         if ( 'diff' == $this->formtype ) {
1079                                 $wgOut->addHTML( $this->getDiff() );
1080                         }
1081                 }
1082
1083
1084                 $wgOut->addHTML( $this->editFormTextTop );
1085
1086                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1087                 # Otherwise, show a summary field at the bottom
1088                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1089                 if( $this->section == 'new' ) {
1090                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1091                         $editsummary = '';
1092                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1093                         $summarypreview = '';
1094                 } else {
1095                         $commentsubject = '';
1096                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1097                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1098                         $subjectpreview = '';
1099                 }
1100
1101                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1102                 if( !$this->preview && !$this->diff ) {
1103                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1104                 }
1105                 $templates = ($this->preview || $this->section) ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1106                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1107
1108                 global $wgUseMetadataEdit ;
1109                 if ( $wgUseMetadataEdit ) {
1110                         $metadata = $this->mMetaData ;
1111                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1112                         $top = wfMsgWikiHtml( 'metadata_help' );
1113                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1114                 }
1115                 else $metadata = "" ;
1116
1117                 $hidden = '';
1118                 $recreate = '';
1119                 if ($this->deletedSinceEdit) {
1120                         if ( 'save' != $this->formtype ) {
1121                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
1122                         } else {
1123                                 // Hide the toolbar and edit area, use can click preview to get it back
1124                                 // Add an confirmation checkbox and explanation.
1125                                 $toolbar = '';
1126                                 $hidden = 'type="hidden" style="display:none;"';
1127                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1128                                 $recreate .=
1129                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1130                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1131                         }
1132                 }
1133
1134                 $temp = array(
1135                         'id'        => 'wpSave',
1136                         'name'      => 'wpSave',
1137                         'type'      => 'submit',
1138                         'tabindex'  => '5',
1139                         'value'     => wfMsg('savearticle'),
1140                         'accesskey' => wfMsg('accesskey-save'),
1141                         'title'     => wfMsg('tooltip-save'),
1142                 );
1143                 $buttons['save'] = wfElement('input', $temp, '');
1144                 $temp = array(
1145                         'id'        => 'wpDiff',
1146                         'name'      => 'wpDiff',
1147                         'type'      => 'submit',
1148                         'tabindex'  => '7',
1149                         'value'     => wfMsg('showdiff'),
1150                         'accesskey' => wfMsg('accesskey-diff'),
1151                         'title'     => wfMsg('tooltip-diff'),
1152                 );
1153                 $buttons['diff'] = wfElement('input', $temp, '');
1154
1155                 global $wgLivePreview;
1156                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1157                         $temp = array(
1158                                 'id'        => 'wpPreview',
1159                                 'name'      => 'wpPreview',
1160                                 'type'      => 'submit',
1161                                 'tabindex'  => '6',
1162                                 'value'     => wfMsg('showpreview'),
1163                                 'accesskey' => '',
1164                                 'title'     => wfMsg('tooltip-preview'),
1165                                 'style'     => 'display: none;',
1166                         );
1167                         $buttons['preview'] = wfElement('input', $temp, '');
1168                         $temp = array(
1169                                 'id'        => 'wpLivePreview',
1170                                 'name'      => 'wpLivePreview',
1171                                 'type'      => 'submit',
1172                                 'tabindex'  => '6',
1173                                 'value'     => wfMsg('showlivepreview'),
1174                                 'accesskey' => wfMsg('accesskey-preview'),
1175                                 'title'     => '',
1176                                 'onclick'   => $this->doLivePreviewScript(),
1177                         );
1178                         $buttons['live'] = wfElement('input', $temp, '');
1179                 } else {
1180                         $temp = array(
1181                                 'id'        => 'wpPreview',
1182                                 'name'      => 'wpPreview',
1183                                 'type'      => 'submit',
1184                                 'tabindex'  => '6',
1185                                 'value'     => wfMsg('showpreview'),
1186                                 'accesskey' => wfMsg('accesskey-preview'),
1187                                 'title'     => wfMsg('tooltip-preview'),
1188                         );
1189                         $buttons['preview'] = wfElement('input', $temp, '');
1190                         $buttons['live'] = '';
1191                 }
1192
1193                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1194                         ? ""
1195                         : "<input type='hidden' name=\"safemode\" value='1' />\n";
1196
1197                 $wgOut->addHTML( <<<END
1198 {$toolbar}
1199 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1200 END
1201 );
1202
1203                 if( is_callable( $formCallback ) ) {
1204                         call_user_func_array( $formCallback, array( &$wgOut ) );
1205                 }
1206
1207                 // Put these up at the top to ensure they aren't lost on early form submission
1208                 $wgOut->addHTML( "
1209 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1210 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1211 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1212 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1213
1214                 $wgOut->addHTML( <<<END
1215 $recreate
1216 {$commentsubject}
1217 {$subjectpreview}
1218 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1219 cols='{$cols}'{$ew} $hidden>
1220 END
1221 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1222 "
1223 </textarea>
1224                 " );
1225
1226                 $wgOut->addWikiText( $copywarn );
1227                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1228                 $wgOut->addHTML( "
1229 {$metadata}
1230 {$editsummary}
1231 {$summarypreview}
1232 {$checkboxhtml}
1233 {$safemodehtml}
1234 ");
1235
1236                 $wgOut->addHTML(
1237 "<div class='editButtons'>
1238         {$buttons['save']}
1239         {$buttons['preview']}
1240         {$buttons['live']}
1241         {$buttons['diff']}
1242         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1243 </div><!-- editButtons -->
1244 </div><!-- editOptions -->");
1245
1246                 $wgOut->addHtml( '<div class="mw-editTools">' );
1247                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1248                 $wgOut->addHtml( '</div>' );
1249
1250                 $wgOut->addHTML( $this->editFormTextAfterTools );
1251
1252                 $wgOut->addHTML( "
1253 <div class='templatesUsed'>
1254 {$formattedtemplates}
1255 </div>
1256 " );
1257
1258                 /**
1259                  * To make it harder for someone to slip a user a page
1260                  * which submits an edit form to the wiki without their
1261                  * knowledge, a random token is associated with the login
1262                  * session. If it's not passed back with the submission,
1263                  * we won't save the page, or render user JavaScript and
1264                  * CSS previews.
1265                  *
1266                  * For anon editors, who may not have a session, we just
1267                  * include the constant suffix to prevent editing from
1268                  * broken text-mangling proxies.
1269                  */
1270                 if ( $wgUser->isLoggedIn() )
1271                         $token = htmlspecialchars( $wgUser->editToken() );
1272                 else
1273                         $token = EDIT_TOKEN_SUFFIX;
1274                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1275
1276
1277                 # If a blank edit summary was previously provided, and the appropriate
1278                 # user preference is active, pass a hidden tag here. This will stop the
1279                 # user being bounced back more than once in the event that a summary
1280                 # is not required.
1281                 if( $this->missingSummary ) {
1282                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1283                 }
1284
1285                 # For a bit more sophisticated detection of blank summaries, hash the
1286                 # automatic one and pass that in a hidden field.
1287                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1288                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1289
1290                 if ( $this->isConflict ) {
1291                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1292
1293                         $de = new DifferenceEngine( $this->mTitle );
1294                         $de->setText( $this->textbox2, $this->textbox1 );
1295                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1296
1297                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1298                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1299                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1300                 }
1301                 $wgOut->addHTML( $this->editFormTextBottom );
1302                 $wgOut->addHTML( "</form>\n" );
1303                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1304
1305                         if ( $this->formtype == 'preview') {
1306                                 $this->showPreview( $previewOutput );
1307                         } else {
1308                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1309                         }
1310
1311                         if ( $this->formtype == 'diff') {
1312                                 $wgOut->addHTML( $this->getDiff() );
1313                         }
1314
1315                 }
1316
1317                 wfProfileOut( $fname );
1318         }
1319
1320         /**
1321          * Append preview output to $wgOut.
1322          * Includes category rendering if this is a category page.
1323          *
1324          * @param string $text The HTML to be output for the preview.
1325          */
1326         private function showPreview( $text ) {
1327                 global $wgOut;
1328
1329                 $wgOut->addHTML( '<div id="wikiPreview">' );
1330                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1331                         $this->mArticle->openShowCategory();
1332                 }
1333                 $wgOut->addHTML( $text );
1334                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1335                         $this->mArticle->closeShowCategory();
1336                 }
1337                 $wgOut->addHTML( '</div>' );
1338         }
1339
1340         /**
1341          * Live Preview lets us fetch rendered preview page content and
1342          * add it to the page without refreshing the whole page.
1343          * If not supported by the browser it will fall through to the normal form
1344          * submission method.
1345          *
1346          * This function outputs a script tag to support live preview, and
1347          * returns an onclick handler which should be added to the attributes
1348          * of the preview button
1349          */
1350         function doLivePreviewScript() {
1351                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1352                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1353                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1354                         '"></script>' . "\n" );
1355                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1356                 return "return !livePreview(" .
1357                         "getElementById('wikiPreview')," .
1358                         "editform.wpTextbox1.value," .
1359                         '"' . $liveAction . '"' . ")";
1360         }
1361
1362         function getLastDelete() {
1363                 $dbr =& wfGetDB( DB_SLAVE );
1364                 $fname = 'EditPage::getLastDelete';
1365                 $res = $dbr->select(
1366                         array( 'logging', 'user' ),
1367                         array( 'log_type',
1368                                'log_action',
1369                                'log_timestamp',
1370                                'log_user',
1371                                'log_namespace',
1372                                'log_title',
1373                                'log_comment',
1374                                'log_params',
1375                                'user_name', ),
1376                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1377                                'log_title' => $this->mTitle->getDBkey(),
1378                                'log_type' => 'delete',
1379                                'log_action' => 'delete',
1380                                'user_id=log_user' ),
1381                         $fname,
1382                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1383
1384                 if($dbr->numRows($res) == 1) {
1385                         while ( $x = $dbr->fetchObject ( $res ) )
1386                                 $data = $x;
1387                         $dbr->freeResult ( $res ) ;
1388                 } else {
1389                         $data = null;
1390                 }
1391                 return $data;
1392         }
1393
1394         /**
1395          * @todo document
1396          */
1397         function getPreviewText() {
1398                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1399
1400                 $fname = 'EditPage::getPreviewText';
1401                 wfProfileIn( $fname );
1402
1403                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1404                         $msg = 'session_fail_preview';
1405                 } else {
1406                         $msg = 'previewnote';
1407                 }
1408                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1409                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1410                 if ( $this->isConflict ) {
1411                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1412                 }
1413
1414                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1415                 $parserOptions->setEditSection( false );
1416
1417                 global $wgRawHtml;
1418                 if( $wgRawHtml && !$this->mTokenOk ) {
1419                         // Could be an offsite preview attempt. This is very unsafe if
1420                         // HTML is enabled, as it could be an attack.
1421                         return $wgOut->parse( "<div class='previewnote'>" .
1422                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1423                 }
1424
1425                 # don't parse user css/js, show message about preview
1426                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1427
1428                 if ( $this->isCssJsSubpage ) {
1429                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1430                                 $previewtext = wfMsg('usercsspreview');
1431                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1432                                 $previewtext = wfMsg('userjspreview');
1433                         }
1434                         $parserOptions->setTidy(true);
1435                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1436                         $wgOut->addHTML( $parserOutput->mText );
1437                         wfProfileOut( $fname );
1438                         return $previewhead;
1439                 } else {
1440                         $toparse = $this->textbox1;
1441
1442                         # If we're adding a comment, we need to show the
1443                         # summary as the headline
1444                         if($this->section=="new" && $this->summary!="") {
1445                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1446                         }
1447
1448                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1449                         $parserOptions->setTidy(true);
1450                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1451                                         $wgTitle, $parserOptions );
1452
1453                         $previewHTML = $parserOutput->getText();
1454                         $wgOut->addParserOutputNoText( $parserOutput );
1455
1456                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1457                                 foreach ( array_keys( $template ) as $dbk)
1458                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1459
1460                         wfProfileOut( $fname );
1461                         return $previewhead . $previewHTML;
1462                 }
1463         }
1464
1465         /**
1466          * Call the stock "user is blocked" page
1467          */
1468         function blockedPage() {
1469                 global $wgOut, $wgUser;
1470                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1471
1472                 # If the user made changes, preserve them when showing the markup
1473                 # (This happens when a user is blocked during edit, for instance)
1474                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1475                 if( $first ) {
1476                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1477                 } else {
1478                         $source = $this->textbox1;
1479                 }
1480
1481                 # Spit out the source or the user's modified version
1482                 if( $source !== false ) {
1483                         $rows = $wgUser->getOption( 'rows' );
1484                         $cols = $wgUser->getOption( 'cols' );
1485                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1486                         $wgOut->addHtml( '<hr />' );
1487                         $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
1488                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1489                 }
1490         }
1491
1492         /**
1493          * Produce the stock "please login to edit pages" page
1494          */
1495         function userNotLoggedInPage() {
1496                 global $wgUser, $wgOut;
1497                 $skin = $wgUser->getSkin();
1498
1499                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1500                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1501
1502                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1503                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1504                 $wgOut->setArticleRelated( false );
1505
1506                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1507                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1508         }
1509
1510         /**
1511          * Creates a basic error page which informs the user that
1512          * they have to validate their email address before being
1513          * allowed to edit.
1514          */
1515         function userNotConfirmedPage() {
1516                 global $wgOut;
1517
1518                 $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
1519                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1520                 $wgOut->setArticleRelated( false );
1521
1522                 $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
1523                 $wgOut->returnToMain( false );
1524         }
1525
1526         /**
1527          * Produce the stock "your edit contains spam" page
1528          *
1529          * @param $match Text which triggered one or more filters
1530          */
1531         function spamPage( $match = false ) {
1532                 global $wgOut;
1533
1534                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1535                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1536                 $wgOut->setArticleRelated( false );
1537
1538                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1539                 if ( $match )
1540                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1541
1542                 $wgOut->returnToMain( false );
1543         }
1544
1545         /**
1546          * @private
1547          * @todo document
1548          */
1549         function mergeChangesInto( &$editText ){
1550                 $fname = 'EditPage::mergeChangesInto';
1551                 wfProfileIn( $fname );
1552
1553                 $db =& wfGetDB( DB_MASTER );
1554
1555                 // This is the revision the editor started from
1556                 $baseRevision = Revision::loadFromTimestamp(
1557                         $db, $this->mArticle->mTitle, $this->edittime );
1558                 if( is_null( $baseRevision ) ) {
1559                         wfProfileOut( $fname );
1560                         return false;
1561                 }
1562                 $baseText = $baseRevision->getText();
1563
1564                 // The current state, we want to merge updates into it
1565                 $currentRevision =  Revision::loadFromTitle(
1566                         $db, $this->mArticle->mTitle );
1567                 if( is_null( $currentRevision ) ) {
1568                         wfProfileOut( $fname );
1569                         return false;
1570                 }
1571                 $currentText = $currentRevision->getText();
1572
1573                 $result = '';
1574                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1575                         $editText = $result;
1576                         wfProfileOut( $fname );
1577                         return true;
1578                 } else {
1579                         wfProfileOut( $fname );
1580                         return false;
1581                 }
1582         }
1583
1584         /**
1585          * Check if the browser is on a blacklist of user-agents known to
1586          * mangle UTF-8 data on form submission. Returns true if Unicode
1587          * should make it through, false if it's known to be a problem.
1588          * @return bool
1589          * @private
1590          */
1591         function checkUnicodeCompliantBrowser() {
1592                 global $wgBrowserBlackList;
1593                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1594                         // No User-Agent header sent? Trust it by default...
1595                         return true;
1596                 }
1597                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1598                 foreach ( $wgBrowserBlackList as $browser ) {
1599                         if ( preg_match($browser, $currentbrowser) ) {
1600                                 return false;
1601                         }
1602                 }
1603                 return true;
1604         }
1605
1606         /**
1607          * Format an anchor fragment as it would appear for a given section name
1608          * @param string $text
1609          * @return string
1610          * @private
1611          */
1612         function sectionAnchor( $text ) {
1613                 $headline = Sanitizer::decodeCharReferences( $text );
1614                 # strip out HTML
1615                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
1616                 $headline = trim( $headline );
1617                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
1618                 $replacearray = array(
1619                         '%3A' => ':',
1620                         '%' => '.'
1621                 );
1622                 return str_replace(
1623                         array_keys( $replacearray ),
1624                         array_values( $replacearray ),
1625                         $sectionanchor );
1626         }
1627
1628         /**
1629          * Shows a bulletin board style toolbar for common editing functions.
1630          * It can be disabled in the user preferences.
1631          * The necessary JavaScript code can be found in style/wikibits.js.
1632          */
1633         function getEditToolbar() {
1634                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1635
1636                 /**
1637                  * toolarray an array of arrays which each include the filename of
1638                  * the button image (without path), the opening tag, the closing tag,
1639                  * and optionally a sample text that is inserted between the two when no
1640                  * selection is highlighted.
1641                  * The tip text is shown when the user moves the mouse over the button.
1642                  *
1643                  * Already here are accesskeys (key), which are not used yet until someone
1644                  * can figure out a way to make them work in IE. However, we should make
1645                  * sure these keys are not defined on the edit page.
1646                  */
1647                 $toolarray=array(
1648                         array(  'image'=>'button_bold.png',
1649                                         'open'  =>      '\\\'\\\'\\\'',
1650                                         'close' =>      '\\\'\\\'\\\'',
1651                                         'sample'=>      wfMsg('bold_sample'),
1652                                         'tip'   =>      wfMsg('bold_tip'),
1653                                         'key'   =>      'B'
1654                                 ),
1655                         array(  'image'=>'button_italic.png',
1656                                         'open'  =>      '\\\'\\\'',
1657                                         'close' =>      '\\\'\\\'',
1658                                         'sample'=>      wfMsg('italic_sample'),
1659                                         'tip'   =>      wfMsg('italic_tip'),
1660                                         'key'   =>      'I'
1661                                 ),
1662                         array(  'image'=>'button_link.png',
1663                                         'open'  =>      '[[',
1664                                         'close' =>      ']]',
1665                                         'sample'=>      wfMsg('link_sample'),
1666                                         'tip'   =>      wfMsg('link_tip'),
1667                                         'key'   =>      'L'
1668                                 ),
1669                         array(  'image'=>'button_extlink.png',
1670                                         'open'  =>      '[',
1671                                         'close' =>      ']',
1672                                         'sample'=>      wfMsg('extlink_sample'),
1673                                         'tip'   =>      wfMsg('extlink_tip'),
1674                                         'key'   =>      'X'
1675                                 ),
1676                         array(  'image'=>'button_headline.png',
1677                                         'open'  =>      "\\n== ",
1678                                         'close' =>      " ==\\n",
1679                                         'sample'=>      wfMsg('headline_sample'),
1680                                         'tip'   =>      wfMsg('headline_tip'),
1681                                         'key'   =>      'H'
1682                                 ),
1683                         array(  'image'=>'button_image.png',
1684                                         'open'  =>      '[['.$wgContLang->getNsText(NS_IMAGE).":",
1685                                         'close' =>      ']]',
1686                                         'sample'=>      wfMsg('image_sample'),
1687                                         'tip'   =>      wfMsg('image_tip'),
1688                                         'key'   =>      'D'
1689                                 ),
1690                         array(  'image' =>'button_media.png',
1691                                         'open'  =>      '[['.$wgContLang->getNsText(NS_MEDIA).':',
1692                                         'close' =>      ']]',
1693                                         'sample'=>      wfMsg('media_sample'),
1694                                         'tip'   =>      wfMsg('media_tip'),
1695                                         'key'   =>      'M'
1696                                 ),
1697                         array(  'image' =>'button_math.png',
1698                                         'open'  =>      "<math>",
1699                                         'close' =>      "<\\/math>",
1700                                         'sample'=>      wfMsg('math_sample'),
1701                                         'tip'   =>      wfMsg('math_tip'),
1702                                         'key'   =>      'C'
1703                                 ),
1704                         array(  'image' =>'button_nowiki.png',
1705                                         'open'  =>      "<nowiki>",
1706                                         'close' =>      "<\\/nowiki>",
1707                                         'sample'=>      wfMsg('nowiki_sample'),
1708                                         'tip'   =>      wfMsg('nowiki_tip'),
1709                                         'key'   =>      'N'
1710                                 ),
1711                         array(  'image' =>'button_sig.png',
1712                                         'open'  =>      '--~~~~',
1713                                         'close' =>      '',
1714                                         'sample'=>      '',
1715                                         'tip'   =>      wfMsg('sig_tip'),
1716                                         'key'   =>      'Y'
1717                                 ),
1718                         array(  'image' =>'button_hr.png',
1719                                         'open'  =>      "\\n----\\n",
1720                                         'close' =>      '',
1721                                         'sample'=>      '',
1722                                         'tip'   =>      wfMsg('hr_tip'),
1723                                         'key'   =>      'R'
1724                                 )
1725                 );
1726                 $toolbar = "<div id='toolbar'>\n";
1727                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1728
1729                 foreach($toolarray as $tool) {
1730
1731                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1732                         $open=$tool['open'];
1733                         $close=$tool['close'];
1734                         $sample = wfEscapeJsString( $tool['sample'] );
1735
1736                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1737                         // Older browsers show a "speedtip" type message only for ALT.
1738                         // Ideally these should be different, realistically they
1739                         // probably don't need to be.
1740                         $tip = wfEscapeJsString( $tool['tip'] );
1741
1742                         #$key = $tool["key"];
1743
1744                         $toolbar.="addButton('$image','$tip','$open','$close','$sample');\n";
1745                 }
1746
1747                 $toolbar.="/*]]>*/\n</script>";
1748                 $toolbar.="\n</div>";
1749                 return $toolbar;
1750         }
1751
1752         /**
1753          * Output preview text only. This can be sucked into the edit page
1754          * via JavaScript, and saves the server time rendering the skin as
1755          * well as theoretically being more robust on the client (doesn't
1756          * disturb the edit box's undo history, won't eat your text on
1757          * failure, etc).
1758          *
1759          * @todo This doesn't include category or interlanguage links.
1760          *       Would need to enhance it a bit, maybe wrap them in XML
1761          *       or something... that might also require more skin
1762          *       initialization, so check whether that's a problem.
1763          */
1764         function livePreview() {
1765                 global $wgOut;
1766                 $wgOut->disable();
1767                 header( 'Content-type: text/xml' );
1768                 header( 'Cache-control: no-cache' );
1769                 # FIXME
1770                 echo $this->getPreviewText( );
1771                 /* To not shake screen up and down between preview and live-preview */
1772                 echo "<br style=\"clear:both;\" />\n";
1773         }
1774
1775
1776         /**
1777          * Get a diff between the current contents of the edit box and the
1778          * version of the page we're editing from.
1779          *
1780          * If this is a section edit, we'll replace the section as for final
1781          * save and then make a comparison.
1782          *
1783          * @return string HTML
1784          */
1785         function getDiff() {
1786                 $oldtext = $this->mArticle->fetchContent();
1787                 $newtext = $this->mArticle->replaceSection(
1788                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1789                 $newtext = $this->mArticle->preSaveTransform( $newtext );
1790                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
1791                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
1792                 if ( $oldtext !== false  || $newtext != '' ) {
1793                         $de = new DifferenceEngine( $this->mTitle );
1794                         $de->setText( $oldtext, $newtext );
1795                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1796                 } else {
1797                         $difftext = '';
1798                 }
1799
1800                 return '<div id="wikiDiff">' . $difftext . '</div>';
1801         }
1802
1803         /**
1804          * Filter an input field through a Unicode de-armoring process if it
1805          * came from an old browser with known broken Unicode editing issues.
1806          *
1807          * @param WebRequest $request
1808          * @param string $field
1809          * @return string
1810          * @private
1811          */
1812         function safeUnicodeInput( $request, $field ) {
1813                 $text = rtrim( $request->getText( $field ) );
1814                 return $request->getBool( 'safemode' )
1815                         ? $this->unmakesafe( $text )
1816                         : $text;
1817         }
1818
1819         /**
1820          * Filter an output field through a Unicode armoring process if it is
1821          * going to an old browser with known broken Unicode editing issues.
1822          *
1823          * @param string $text
1824          * @return string
1825          * @private
1826          */
1827         function safeUnicodeOutput( $text ) {
1828                 global $wgContLang;
1829                 $codedText = $wgContLang->recodeForEdit( $text );
1830                 return $this->checkUnicodeCompliantBrowser()
1831                         ? $codedText
1832                         : $this->makesafe( $codedText );
1833         }
1834
1835         /**
1836          * A number of web browsers are known to corrupt non-ASCII characters
1837          * in a UTF-8 text editing environment. To protect against this,
1838          * detected browsers will be served an armored version of the text,
1839          * with non-ASCII chars converted to numeric HTML character references.
1840          *
1841          * Preexisting such character references will have a 0 added to them
1842          * to ensure that round-trips do not alter the original data.
1843          *
1844          * @param string $invalue
1845          * @return string
1846          * @private
1847          */
1848         function makesafe( $invalue ) {
1849                 // Armor existing references for reversability.
1850                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1851
1852                 $bytesleft = 0;
1853                 $result = "";
1854                 $working = 0;
1855                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1856                         $bytevalue = ord( $invalue{$i} );
1857                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1858                                 $result .= chr( $bytevalue );
1859                                 $bytesleft = 0;
1860                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
1861                                 $working = $working << 6;
1862                                 $working += ($bytevalue & 0x3F);
1863                                 $bytesleft--;
1864                                 if( $bytesleft <= 0 ) {
1865                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
1866                                 }
1867                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
1868                                 $working = $bytevalue & 0x1F;
1869                                 $bytesleft = 1;
1870                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
1871                                 $working = $bytevalue & 0x0F;
1872                                 $bytesleft = 2;
1873                         } else { //1111 0xxx
1874                                 $working = $bytevalue & 0x07;
1875                                 $bytesleft = 3;
1876                         }
1877                 }
1878                 return $result;
1879         }
1880
1881         /**
1882          * Reverse the previously applied transliteration of non-ASCII characters
1883          * back to UTF-8. Used to protect data from corruption by broken web browsers
1884          * as listed in $wgBrowserBlackList.
1885          *
1886          * @param string $invalue
1887          * @return string
1888          * @private
1889          */
1890         function unmakesafe( $invalue ) {
1891                 $result = "";
1892                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1893                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
1894                                 $i += 3;
1895                                 $hexstring = "";
1896                                 do {
1897                                         $hexstring .= $invalue{$i};
1898                                         $i++;
1899                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
1900
1901                                 // Do some sanity checks. These aren't needed for reversability,
1902                                 // but should help keep the breakage down if the editor
1903                                 // breaks one of the entities whilst editing.
1904                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
1905                                         $codepoint = hexdec($hexstring);
1906                                         $result .= codepointToUtf8( $codepoint );
1907                                 } else {
1908                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
1909                                 }
1910                         } else {
1911                                 $result .= substr( $invalue, $i, 1 );
1912                         }
1913                 }
1914                 // reverse the transform that we made for reversability reasons.
1915                 return strtr( $result, array( "&#x0" => "&#x" ) );
1916         }
1917
1918         function noCreatePermission() {
1919                 global $wgOut;
1920                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
1921                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
1922         }
1923
1924 }
1925
1926 ?>