includes/EditPage.php

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