includes/EditPage.php

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