includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  */
   5
   6 /**
   7  * The edit page/HTML interface (split from Article)
   8  * The actual database and text munging is still in Article,
   9  * but it should get easier to call those from alternate
  10  * interfaces.
  11  */
  12 class EditPage {
  13         var $mArticle;
  14         var $mTitle;
  15         var $mMetaData = '';
  16         var $isConflict = false;
  17         var $isCssJsSubpage = false;
  18         var $deletedSinceEdit = false;
  19         var $formtype;
  20         var $firsttime;
  21         var $lastDelete;
  22         var $mTokenOk = false;
  23         var $mTriedSave = false;
  24         var $tooBig = false;
  25         var $kblength = false;
  26         var $missingComment = false;
  27         var $missingSummary = false;
  28         var $allowBlankSummary = false;
  29         var $autoSumm = '';
  30         var $hookError = '';
  31         var $mPreviewTemplates;
  32
  33         # Form values
  34         var $save = false, $preview = false, $diff = false;
  35         var $minoredit = false, $watchthis = false, $recreate = false;
  36         var $textbox1 = '', $textbox2 = '', $summary = '';
  37         var $edittime = '', $section = '', $starttime = '';
  38         var $oldid = 0, $editintro = '', $scrolltop = null;
  39
  40         # Placeholders for text injection by hooks (must be HTML)
  41         # extensions should take care to _append_ to the present value
  42         public $editFormPageTop; // Before even the preview
  43         public $editFormTextTop;
  44         public $editFormTextAfterWarn;
  45         public $editFormTextAfterTools;
  46         public $editFormTextBottom;
  47
  48         /**
  49          * @todo document
  50          * @param $article
  51          */
  52         function EditPage( $article ) {
  53                 $this->mArticle =& $article;
  54                 global $wgTitle;
  55                 $this->mTitle =& $wgTitle;
  56
  57                 # Placeholders for text injection by hooks (empty per default)
  58                 $this->editFormPageTop =
  59                 $this->editFormTextTop =
  60                 $this->editFormTextAfterWarn =
  61                 $this->editFormTextAfterTools =
  62                 $this->editFormTextBottom = "";
  63         }
  64
  65         /**
  66          * Fetch initial editing page content.
  67          */
  68         private function getContent( $def_text = '' ) {
  69                 global $wgOut, $wgRequest, $wgParser;
  70
  71                 # Get variables from query string :P
  72                 $section = $wgRequest->getVal( 'section' );
  73                 $preload = $wgRequest->getVal( 'preload' );
  74                 $undoafter = $wgRequest->getVal( 'undoafter' );
  75                 $undo = $wgRequest->getVal( 'undo' );
  76
  77                 wfProfileIn( __METHOD__ );
  78
  79                 $text = '';
  80                 if( !$this->mTitle->exists() ) {
  81                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
  82                                 # If this is a system message, get the default text.
  83                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
  84                         } else {
  85                                 # If requested, preload some text.
  86                                 $text = $this->getPreloadedText( $preload );
  87                         }
  88                         # We used to put MediaWiki:Newarticletext here if
  89                         # $text was empty at this point.
  90                         # This is now shown above the edit box instead.
  91                 } else {
  92                         // FIXME: may be better to use Revision class directly
  93                         // But don't mess with it just yet. Article knows how to
  94                         // fetch the page record from the high-priority server,
  95                         // which is needed to guarantee we don't pick up lagged
  96                         // information.
  97
  98                         $text = $this->mArticle->getContent();
  99
 100                         if ( $undo > 0 && $undo > $undoafter ) {
 101                                 # Undoing a specific edit overrides section editing; section-editing
 102                                 # doesn't work with undoing.
 103                                 if ( $undoafter ) {
 104                                         $undorev = Revision::newFromId($undo);
 105                                         $oldrev = Revision::newFromId($undoafter);
 106                                 } else {
 107                                         $undorev = Revision::newFromId($undo);
 108                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 109                                 }
 110
 111                                 #Sanity check, make sure it's the right page.
 112                                 # Otherwise, $text will be left as-is.
 113                                 if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
 114                                         $undorev_text = $undorev->getText();
 115                     $oldrev_text = $oldrev->getText();
 116                     $currev_text = $text;
 117
 118                                         #No use doing a merge if it's just a straight revert.
 119                                         if ( $currev_text != $undorev_text ) {
 120                                                 $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
 121                                         } else {
 122                                                 $text = $oldrev_text;
 123                                                 $result = true;
 124                                         }
 125                                 } else {
 126                                         // Failed basic sanity checks.
 127                                         // Older revisions may have been removed since the link
 128                                         // was created, or we may simply have got bogus input.
 129                                         $result = false;
 130                                 }
 131
 132                                 if( $result ) {
 133                                         # Inform the user of our success and set an automatic edit summary
 134                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 135                                         $firstrev = $oldrev->getNext();
 136                                         # If we just undid one rev, use an autosummary
 137                                         if ( $firstrev->mId == $undo ) {
 138                                                 $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 139                                         }
 140                                         $this->formtype = 'diff';
 141                                 } else {
 142                                         # Warn the user that something went wrong
 143                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 144                                 }
 145                         } else if( $section != '' ) {
 146                                 if( $section == 'new' ) {
 147                                         $text = $this->getPreloadedText( $preload );
 148                                 } else {
 149                                         $text = $wgParser->getSection( $text, $section, $def_text );
 150                                 }
 151                         }
 152                 }
 153
 154                 wfProfileOut( __METHOD__ );
 155                 return $text;
 156         }
 157
 158         /**
 159          * Get the contents of a page from its title and remove includeonly tags
 160          *
 161          * @param $preload String: the title of the page.
 162          * @return string The contents of the page.
 163          */
 164         private function getPreloadedText($preload) {
 165                 if ( $preload === '' )
 166                         return '';
 167                 else {
 168                         $preloadTitle = Title::newFromText( $preload );
 169                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 170                                 $rev=Revision::newFromTitle($preloadTitle);
 171                                 if ( is_object( $rev ) ) {
 172                                         $text = $rev->getText();
 173                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 174                                         // its own mini-parser! -ævar
 175                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 176                                         return $text;
 177                                 } else
 178                                         return '';
 179                         }
 180                 }
 181         }
 182
 183         /**
 184          * This is the function that extracts metadata from the article body on the first view.
 185          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 186          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 187          */
 188         function extractMetaDataFromArticle () {
 189                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 190                 $this->mMetaData = '' ;
 191                 if ( !$wgUseMetadataEdit ) return ;
 192                 if ( $wgMetadataWhitelist == '' ) return ;
 193                 $s = '' ;
 194                 $t = $this->getContent();
 195
 196                 # MISSING : <nowiki> filtering
 197
 198                 # Categories and language links
 199                 $t = explode ( "\n" , $t ) ;
 200                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 201                 $cat = $ll = array() ;
 202                 foreach ( $t AS $key => $x )
 203                 {
 204                         $y = trim ( strtolower ( $x ) ) ;
 205                         while ( substr ( $y , 0 , 2 ) == '[[' )
 206                         {
 207                                 $y = explode ( ']]' , trim ( $x ) ) ;
 208                                 $first = array_shift ( $y ) ;
 209                                 $first = explode ( ':' , $first ) ;
 210                                 $ns = array_shift ( $first ) ;
 211                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 212                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 213                                 {
 214                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 215                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 216                                         else $ll[] = $add ;
 217                                         $x = implode ( ']]' , $y ) ;
 218                                         $t[$key] = $x ;
 219                                         $y = trim ( strtolower ( $x ) ) ;
 220                                 }
 221                         }
 222                 }
 223                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 224                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 225                 $t = implode ( "\n" , $t ) ;
 226
 227                 # Load whitelist
 228                 $sat = array () ; # stand-alone-templates; must be lowercase
 229                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 230                 $wl_article = new Article ( $wl_title ) ;
 231                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 232                 foreach ( $wl AS $x )
 233                 {
 234                         $isentry = false ;
 235                         $x = trim ( $x ) ;
 236                         while ( substr ( $x , 0 , 1 ) == '*' )
 237                         {
 238                                 $isentry = true ;
 239                                 $x = trim ( substr ( $x , 1 ) ) ;
 240                         }
 241                         if ( $isentry )
 242                         {
 243                                 $sat[] = strtolower ( $x ) ;
 244                         }
 245
 246                 }
 247
 248                 # Templates, but only some
 249                 $t = explode ( '{{' , $t ) ;
 250                 $tl = array () ;
 251                 foreach ( $t AS $key => $x )
 252                 {
 253                         $y = explode ( '}}' , $x , 2 ) ;
 254                         if ( count ( $y ) == 2 )
 255                         {
 256                                 $z = $y[0] ;
 257                                 $z = explode ( '|' , $z ) ;
 258                                 $tn = array_shift ( $z ) ;
 259                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 260                                 {
 261                                         $tl[] = '{{' . $y[0] . '}}' ;
 262                                         $t[$key] = $y[1] ;
 263                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 264                                 }
 265                                 else $t[$key] = '{{' . $x ;
 266                         }
 267                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 268                         else $t[$key] = $x ;
 269                 }
 270                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 271                 $t = implode ( '' , $t ) ;
 272
 273                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 274                 $this->mArticle->mContent = $t ;
 275                 $this->mMetaData = $s ;
 276         }
 277
 278         function submit() {
 279                 $this->edit();
 280         }
 281
 282         /**
 283          * This is the function that gets called for "action=edit". It
 284          * sets up various member variables, then passes execution to
 285          * another function, usually showEditForm()
 286          *
 287          * The edit form is self-submitting, so that when things like
 288          * preview and edit conflicts occur, we get the same form back
 289          * with the extra stuff added.  Only when the final submission
 290          * is made and all is well do we actually save and redirect to
 291          * the newly-edited page.
 292          */
 293         function edit() {
 294                 global $wgOut, $wgUser, $wgRequest, $wgTitle;
 295                 global $wgEmailConfirmToEdit;
 296
 297                 if ( ! wfRunHooks( 'AlternateEdit', array( &$this  ) ) )
 298                         return;
 299
 300                 $fname = 'EditPage::edit';
 301                 wfProfileIn( $fname );
 302                 wfDebug( "$fname: enter\n" );
 303
 304                 // this is not an article
 305                 $wgOut->setArticleFlag(false);
 306
 307                 $this->importFormData( $wgRequest );
 308                 $this->firsttime = false;
 309
 310                 if( $this->live ) {
 311                         $this->livePreview();
 312                         wfProfileOut( $fname );
 313                         return;
 314                 }
 315
 316                 if ( ! $this->mTitle->userCan( 'edit' ) ) {
 317                         wfDebug( "$fname: user can't edit\n" );
 318                         $wgOut->readOnlyPage( $this->getContent(), true );
 319                         wfProfileOut( $fname );
 320                         return;
 321                 }
 322                 wfDebug( "$fname: Checking blocks\n" );
 323                 if ( !$this->preview && !$this->diff && $wgUser->isBlockedFrom( $this->mTitle, !$this->save ) ) {
 324                         # When previewing, don't check blocked state - will get caught at save time.
 325                         # Also, check when starting edition is done against slave to improve performance.
 326                         wfDebug( "$fname: user is blocked\n" );
 327                         $this->blockedPage();
 328                         wfProfileOut( $fname );
 329                         return;
 330                 }
 331                 if ( !$wgUser->isAllowed('edit') ) {
 332                         if ( $wgUser->isAnon() ) {
 333                                 wfDebug( "$fname: user must log in\n" );
 334                                 $this->userNotLoggedInPage();
 335                                 wfProfileOut( $fname );
 336                                 return;
 337                         } else {
 338                                 wfDebug( "$fname: read-only page\n" );
 339                                 $wgOut->readOnlyPage( $this->getContent(), true );
 340                                 wfProfileOut( $fname );
 341                                 return;
 342                         }
 343                 }
 344                 if ($wgEmailConfirmToEdit && !$wgUser->isEmailConfirmed()) {
 345                         wfDebug("$fname: user must confirm e-mail address\n");
 346                         $this->userNotConfirmedPage();
 347                         wfProfileOut($fname);
 348                         return;
 349                 }
 350                 if ( !$this->mTitle->userCan( 'create' ) && !$this->mTitle->exists() ) {
 351                         wfDebug( "$fname: no create permission\n" );
 352                         $this->noCreatePermission();
 353                         wfProfileOut( $fname );
 354                         return;
 355                 }
 356                 if ( wfReadOnly() ) {
 357                         wfDebug( "$fname: read-only mode is engaged\n" );
 358                         if( $this->save || $this->preview ) {
 359                                 $this->formtype = 'preview';
 360                         } else if ( $this->diff ) {
 361                                 $this->formtype = 'diff';
 362                         } else {
 363                                 $wgOut->readOnlyPage( $this->getContent() );
 364                                 wfProfileOut( $fname );
 365                                 return;
 366                         }
 367                 } else {
 368                         if ( $this->save ) {
 369                                 $this->formtype = 'save';
 370                         } else if ( $this->preview ) {
 371                                 $this->formtype = 'preview';
 372                         } else if ( $this->diff ) {
 373                                 $this->formtype = 'diff';
 374                         } else { # First time through
 375                                 $this->firsttime = true;
 376                                 if( $this->previewOnOpen() ) {
 377                                         $this->formtype = 'preview';
 378                                 } else {
 379                                         $this->extractMetaDataFromArticle () ;
 380                                         $this->formtype = 'initial';
 381                                 }
 382                         }
 383                 }
 384
 385                 wfProfileIn( "$fname-business-end" );
 386
 387                 $this->isConflict = false;
 388                 // css / js subpages of user pages get a special treatment
 389                 $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
 390                 $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
 391
 392                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 393                  * no matter it's current state
 394                  */
 395                 $this->deletedSinceEdit = false;
 396                 if ( $this->edittime != '' ) {
 397                         /* Note that we rely on logging table, which hasn't been always there,
 398                          * but that doesn't matter, because this only applies to brand new
 399                          * deletes. This is done on every preview and save request. Move it further down
 400                          * to only perform it on saves
 401                          */
 402                         if ( $this->mTitle->isDeleted() ) {
 403                                 $this->lastDelete = $this->getLastDelete();
 404                                 if ( !is_null($this->lastDelete) ) {
 405                                         $deletetime = $this->lastDelete->log_timestamp;
 406                                         if ( ($deletetime - $this->starttime) > 0 ) {
 407                                                 $this->deletedSinceEdit = true;
 408                                         }
 409                                 }
 410                         }
 411                 }
 412
 413                 if(!$this->mTitle->getArticleID() && ('initial' == $this->formtype || $this->firsttime )) { # new article
 414                         $this->showIntro();
 415                 }
 416                 if( $this->mTitle->isTalkPage() ) {
 417                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 418                 }
 419
 420                 # Attempt submission here.  This will check for edit conflicts,
 421                 # and redundantly check for locked database, blocked IPs, etc.
 422                 # that edit() already checked just in case someone tries to sneak
 423                 # in the back door with a hand-edited submission URL.
 424
 425                 if ( 'save' == $this->formtype ) {
 426                         if ( !$this->attemptSave() ) {
 427                                 wfProfileOut( "$fname-business-end" );
 428                                 wfProfileOut( $fname );
 429                                 return;
 430                         }
 431                 }
 432
 433                 # First time through: get contents, set time for conflict
 434                 # checking, etc.
 435                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 436                         if ($this->initialiseForm() === false) {
 437                                 $this->noSuchSectionPage();
 438                                 wfProfileOut( "$fname-business-end" );
 439                                 wfProfileOut( $fname );
 440                                 return;
 441                         }
 442                         if( !$this->mTitle->getArticleId() )
 443                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 444                 }
 445
 446                 $this->showEditForm();
 447                 wfProfileOut( "$fname-business-end" );
 448                 wfProfileOut( $fname );
 449         }
 450
 451         /**
 452          * Return true if this page should be previewed when the edit form
 453          * is initially opened.
 454          * @return bool
 455          * @private
 456          */
 457         function previewOnOpen() {
 458                 global $wgUser;
 459                 return $this->section != 'new' &&
 460                         ( ( $wgUser->getOption( 'previewonfirst' ) && $this->mTitle->exists() ) ||
 461                                 ( $this->mTitle->getNamespace() == NS_CATEGORY &&
 462                                         !$this->mTitle->exists() ) );
 463         }
 464
 465         /**
 466          * @todo document
 467          * @param $request
 468          */
 469         function importFormData( &$request ) {
 470                 global $wgLang, $wgUser;
 471                 $fname = 'EditPage::importFormData';
 472                 wfProfileIn( $fname );
 473
 474                 if( $request->wasPosted() ) {
 475                         # These fields need to be checked for encoding.
 476                         # Also remove trailing whitespace, but don't remove _initial_
 477                         # whitespace from the text boxes. This may be significant formatting.
 478                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 479                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 480                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 481                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 482                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 483
 484                         $this->edittime = $request->getVal( 'wpEdittime' );
 485                         $this->starttime = $request->getVal( 'wpStarttime' );
 486
 487                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 488
 489                         if( is_null( $this->edittime ) ) {
 490                                 # If the form is incomplete, force to preview.
 491                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 492                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 493                                 $this->preview  = true;
 494                         } else {
 495                                 /* Fallback for live preview */
 496                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 497                                 $this->diff = $request->getCheck( 'wpDiff' );
 498
 499                                 // Remember whether a save was requested, so we can indicate
 500                                 // if we forced preview due to session failure.
 501                                 $this->mTriedSave = !$this->preview;
 502
 503                                 if ( $this->tokenOk( $request ) ) {
 504                                         # Some browsers will not report any submit button
 505                                         # if the user hits enter in the comment box.
 506                                         # The unmarked state will be assumed to be a save,
 507                                         # if the form seems otherwise complete.
 508                                         wfDebug( "$fname: Passed token check.\n" );
 509                                 } else if ( $this->diff ) {
 510                                         # Failed token check, but only requested "Show Changes".
 511                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 512                                 } else {
 513                                         # Page might be a hack attempt posted from
 514                                         # an external site. Preview instead of saving.
 515                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 516                                         $this->preview = true;
 517                                 }
 518                         }
 519                         $this->save    = ! ( $this->preview OR $this->diff );
 520                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 521                                 $this->edittime = null;
 522                         }
 523
 524                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 525                                 $this->starttime = null;
 526                         }
 527
 528                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 529
 530                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 531                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 532
 533                         # Don't force edit summaries when a user is editing their own user or talk page
 534                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 535                                 $this->allowBlankSummary = true;
 536                         } else {
 537                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 538                         }
 539
 540                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 541                 } else {
 542                         # Not a posted form? Start with nothing.
 543                         wfDebug( "$fname: Not a posted form.\n" );
 544                         $this->textbox1  = '';
 545                         $this->textbox2  = '';
 546                         $this->mMetaData = '';
 547                         $this->summary   = '';
 548                         $this->edittime  = '';
 549                         $this->starttime = wfTimestampNow();
 550                         $this->preview   = false;
 551                         $this->save      = false;
 552                         $this->diff      = false;
 553                         $this->minoredit = false;
 554                         $this->watchthis = false;
 555                         $this->recreate  = false;
 556                 }
 557
 558                 $this->oldid = $request->getInt( 'oldid' );
 559
 560                 # Section edit can come from either the form or a link
 561                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 562
 563                 $this->live = $request->getCheck( 'live' );
 564                 $this->editintro = $request->getText( 'editintro' );
 565
 566                 wfProfileOut( $fname );
 567         }
 568
 569         /**
 570          * Make sure the form isn't faking a user's credentials.
 571          *
 572          * @param $request WebRequest
 573          * @return bool
 574          * @private
 575          */
 576         function tokenOk( &$request ) {
 577                 global $wgUser;
 578                 if( $wgUser->isAnon() ) {
 579                         # Anonymous users may not have a session
 580                         # open. Check for suffix anyway.
 581                         $this->mTokenOk = ( EDIT_TOKEN_SUFFIX == $request->getVal( 'wpEditToken' ) );
 582                 } else {
 583                         $this->mTokenOk = $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 584                 }
 585                 return $this->mTokenOk;
 586         }
 587
 588         /** */
 589         function showIntro() {
 590                 global $wgOut, $wgUser;
 591                 $addstandardintro=true;
 592                 if($this->editintro) {
 593                         $introtitle=Title::newFromText($this->editintro);
 594                         if(isset($introtitle) && $introtitle->userCanRead()) {
 595                                 $rev=Revision::newFromTitle($introtitle);
 596                                 if($rev) {
 597                                         $wgOut->addSecondaryWikiText($rev->getText());
 598                                         $addstandardintro=false;
 599                                 }
 600                         }
 601                 }
 602                 if($addstandardintro) {
 603                         if ( $wgUser->isLoggedIn() )
 604                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 605                         else
 606                                 $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
 607                 }
 608         }
 609
 610         /**
 611          * Attempt submission
 612          * @return bool false if output is done, true if the rest of the form should be displayed
 613          */
 614         function attemptSave() {
 615                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
 616                 global $wgMaxArticleSize;
 617
 618                 $fname = 'EditPage::attemptSave';
 619                 wfProfileIn( $fname );
 620                 wfProfileIn( "$fname-checks" );
 621
 622                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 623                 {
 624                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 625                         return false;
 626                 }
 627
 628                 # Reintegrate metadata
 629                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 630                 $this->mMetaData = '' ;
 631
 632                 # Check for spam
 633                 $matches = array();
 634                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 635                         $this->spamPage ( $matches[0] );
 636                         wfProfileOut( "$fname-checks" );
 637                         wfProfileOut( $fname );
 638                         return false;
 639                 }
 640                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 641                         # Error messages or other handling should be performed by the filter function
 642                         wfProfileOut( $fname );
 643                         wfProfileOut( "$fname-checks" );
 644                         return false;
 645                 }
 646                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 647                         # Error messages etc. could be handled within the hook...
 648                         wfProfileOut( $fname );
 649                         wfProfileOut( "$fname-checks" );
 650                         return false;
 651                 } elseif( $this->hookError != '' ) {
 652                         # ...or the hook could be expecting us to produce an error
 653                         wfProfileOut( "$fname-checks " );
 654                         wfProfileOut( $fname );
 655                         return true;
 656                 }
 657                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 658                         # Check block state against master, thus 'false'.
 659                         $this->blockedPage();
 660                         wfProfileOut( "$fname-checks" );
 661                         wfProfileOut( $fname );
 662                         return false;
 663                 }
 664                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 665                 if ( $this->kblength > $wgMaxArticleSize ) {
 666                         // Error will be displayed by showEditForm()
 667                         $this->tooBig = true;
 668                         wfProfileOut( "$fname-checks" );
 669                         wfProfileOut( $fname );
 670                         return true;
 671                 }
 672
 673                 if ( !$wgUser->isAllowed('edit') ) {
 674                         if ( $wgUser->isAnon() ) {
 675                                 $this->userNotLoggedInPage();
 676                                 wfProfileOut( "$fname-checks" );
 677                                 wfProfileOut( $fname );
 678                                 return false;
 679                         }
 680                         else {
 681                                 $wgOut->readOnlyPage();
 682                                 wfProfileOut( "$fname-checks" );
 683                                 wfProfileOut( $fname );
 684                                 return false;
 685                         }
 686                 }
 687
 688                 if ( wfReadOnly() ) {
 689                         $wgOut->readOnlyPage();
 690                         wfProfileOut( "$fname-checks" );
 691                         wfProfileOut( $fname );
 692                         return false;
 693                 }
 694                 if ( $wgUser->pingLimiter() ) {
 695                         $wgOut->rateLimited();
 696                         wfProfileOut( "$fname-checks" );
 697                         wfProfileOut( $fname );
 698                         return false;
 699                 }
 700
 701                 # If the article has been deleted while editing, don't save it without
 702                 # confirmation
 703                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 704                         wfProfileOut( "$fname-checks" );
 705                         wfProfileOut( $fname );
 706                         return true;
 707                 }
 708
 709                 wfProfileOut( "$fname-checks" );
 710
 711                 # If article is new, insert it.
 712                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 713                 if ( 0 == $aid ) {
 714
 715                         // Late check for create permission, just in case *PARANOIA*
 716                         if ( !$this->mTitle->userCan( 'create' ) ) {
 717                                 wfDebug( "$fname: no create permission\n" );
 718                                 $this->noCreatePermission();
 719                                 wfProfileOut( $fname );
 720                                 return;
 721                         }
 722
 723                         # Don't save a new article if it's blank.
 724                         if ( ( '' == $this->textbox1 ) ) {
 725                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 726                                         wfProfileOut( $fname );
 727                                         return false;
 728                         }
 729
 730                         $isComment=($this->section=='new');
 731                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 732                                 $this->minoredit, $this->watchthis, false, $isComment);
 733
 734                         wfProfileOut( $fname );
 735                         return false;
 736                 }
 737
 738                 # Article exists. Check for edit conflict.
 739
 740                 $this->mArticle->clear(); # Force reload of dates, etc.
 741                 $this->mArticle->forUpdate( true ); # Lock the article
 742
 743                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 744
 745                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 746                         $this->isConflict = true;
 747                         if( $this->section == 'new' ) {
 748                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 749                                         $this->mArticle->getComment() == $this->summary ) {
 750                                         // Probably a duplicate submission of a new comment.
 751                                         // This can happen when squid resends a request after
 752                                         // a timeout but the first one actually went through.
 753                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 754                                 } else {
 755                                         // New comment; suppress conflict.
 756                                         $this->isConflict = false;
 757                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 758                                 }
 759                         }
 760                 }
 761                 $userid = $wgUser->getID();
 762
 763                 if ( $this->isConflict) {
 764                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 765                                 $this->mArticle->getTimestamp() . "'\n" );
 766                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 767                 }
 768                 else {
 769                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 770                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 771                 }
 772                 if( is_null( $text ) ) {
 773                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 774                         $this->isConflict = true;
 775                         $text = $this->textbox1;
 776                 }
 777
 778                 # Suppress edit conflict with self, except for section edits where merging is required.
 779                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 780                         wfDebug( "Suppressing edit conflict, same user.\n" );
 781                         $this->isConflict = false;
 782                 } else {
 783                         # switch from section editing to normal editing in edit conflict
 784                         if($this->isConflict) {
 785                                 # Attempt merge
 786                                 if( $this->mergeChangesInto( $text ) ){
 787                                         // Successful merge! Maybe we should tell the user the good news?
 788                                         $this->isConflict = false;
 789                                         wfDebug( "Suppressing edit conflict, successful merge.\n" );
 790                                 } else {
 791                                         $this->section = '';
 792                                         $this->textbox1 = $text;
 793                                         wfDebug( "Keeping edit conflict, failed merge.\n" );
 794                                 }
 795                         }
 796                 }
 797
 798                 if ( $this->isConflict ) {
 799                         wfProfileOut( $fname );
 800                         return true;
 801                 }
 802
 803                 $oldtext = $this->mArticle->getContent();
 804
 805                 # Handle the user preference to force summaries here, but not for null edits
 806                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 807                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 808                         if( md5( $this->summary ) == $this->autoSumm ) {
 809                                 $this->missingSummary = true;
 810                                 wfProfileOut( $fname );
 811                                 return( true );
 812                         }
 813                 }
 814
 815                 #And a similar thing for new sections
 816                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 817                         if (trim($this->summary) == '') {
 818                                 $this->missingSummary = true;
 819                                 wfProfileOut( $fname );
 820                                 return( true );
 821                         }
 822                 }
 823
 824                 # All's well
 825                 wfProfileIn( "$fname-sectionanchor" );
 826                 $sectionanchor = '';
 827                 if( $this->section == 'new' ) {
 828                         if ( $this->textbox1 == '' ) {
 829                                 $this->missingComment = true;
 830                                 return true;
 831                         }
 832                         if( $this->summary != '' ) {
 833                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 834                         }
 835                 } elseif( $this->section != '' ) {
 836                         # Try to get a section anchor from the section source, redirect to edited section if header found
 837                         # XXX: might be better to integrate this into Article::replaceSection
 838                         # for duplicate heading checking and maybe parsing
 839                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 840                         # we can't deal with anchors, includes, html etc in the header for now,
 841                         # headline would need to be parsed to improve this
 842                         if($hasmatch and strlen($matches[2]) > 0) {
 843                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 844                         }
 845                 }
 846                 wfProfileOut( "$fname-sectionanchor" );
 847
 848                 // Save errors may fall down to the edit form, but we've now
 849                 // merged the section into full text. Clear the section field
 850                 // so that later submission of conflict forms won't try to
 851                 // replace that into a duplicated mess.
 852                 $this->textbox1 = $text;
 853                 $this->section = '';
 854
 855                 // Check for length errors again now that the section is merged in
 856                 $this->kblength = (int)(strlen( $text ) / 1024);
 857                 if ( $this->kblength > $wgMaxArticleSize ) {
 858                         $this->tooBig = true;
 859                         wfProfileOut( $fname );
 860                         return true;
 861                 }
 862
 863                 # update the article here
 864                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 865                         $this->watchthis, '', $sectionanchor ) ) {
 866                         wfProfileOut( $fname );
 867                         return false;
 868                 } else {
 869                         $this->isConflict = true;
 870                 }
 871                 wfProfileOut( $fname );
 872                 return true;
 873         }
 874
 875         /**
 876          * Initialise form fields in the object
 877          * Called on the first invocation, e.g. when a user clicks an edit link
 878          */
 879         function initialiseForm() {
 880                 $this->edittime = $this->mArticle->getTimestamp();
 881                 $this->summary = '';
 882                 $this->textbox1 = $this->getContent(false);
 883                 if ($this->textbox1 === false) return false;
 884
 885                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 886                         $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
 887                 wfProxyCheck();
 888                 return true;
 889         }
 890
 891         /**
 892          * Send the edit form and related headers to $wgOut
 893          * @param $formCallback Optional callable that takes an OutputPage
 894          *                      parameter; will be called during form output
 895          *                      near the top, for captchas and the like.
 896          */
 897         function showEditForm( $formCallback=null ) {
 898                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 899
 900                 $fname = 'EditPage::showEditForm';
 901                 wfProfileIn( $fname );
 902
 903                 $sk = $wgUser->getSkin();
 904
 905                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 906
 907                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 908
 909                 # Enabled article-related sidebar, toplinks, etc.
 910                 $wgOut->setArticleRelated( true );
 911
 912                 if ( $this->isConflict ) {
 913                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 914                         $wgOut->setPageTitle( $s );
 915                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 916
 917                         $this->textbox2 = $this->textbox1;
 918                         $this->textbox1 = $this->getContent();
 919                         $this->edittime = $this->mArticle->getTimestamp();
 920                 } else {
 921
 922                         if( $this->section != '' ) {
 923                                 if( $this->section == 'new' ) {
 924                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 925                                 } else {
 926                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 927                                         $matches = array();
 928                                         if( !$this->summary && !$this->preview && !$this->diff ) {
 929                                                 preg_match( "/^(=+)(.+)\\1/mi",
 930                                                         $this->textbox1,
 931                                                         $matches );
 932                                                 if( !empty( $matches[2] ) ) {
 933                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 934                                                 }
 935                                         }
 936                                 }
 937                         } else {
 938                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 939                         }
 940                         $wgOut->setPageTitle( $s );
 941
 942                         if ( $this->missingComment ) {
 943                                 $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
 944                         }
 945
 946                         if( $this->missingSummary && $this->section != 'new' ) {
 947                                 $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
 948                         }
 949
 950                         if( $this->missingSummary && $this->section == 'new' ) {
 951                                 $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
 952                         }
 953
 954                         if( !$this->hookError == '' ) {
 955                                 $wgOut->addWikiText( $this->hookError );
 956                         }
 957
 958                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 959                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 960                         }
 961                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
 962                         // Let sysop know that this will make private content public if saved
 963                                 if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
 964                                         $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
 965                                 }
 966                                 if( !$this->mArticle->mRevision->isCurrent() ) {
 967                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
 968                                         $wgOut->addWikiText( wfMsg( 'editingold' ) );
 969                                 }
 970                         }
 971                 }
 972
 973                 if( wfReadOnly() ) {
 974                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 975                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
 976                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
 977                 } else {
 978                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
 979                                 # Check the skin exists
 980                                 if( $this->isValidCssJsSubpage ) {
 981                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
 982                                 } else {
 983                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
 984                                 }
 985                         }
 986                 }
 987
 988                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 989                         # Show a warning if editing an interface message
 990                         $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
 991                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
 992                         # Is the title semi-protected?
 993                         if( $this->mTitle->isSemiProtected() ) {
 994                                 $notice = wfMsg( 'semiprotectedpagewarning' );
 995                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
 996                                         $notice = '';
 997                         } else {
 998                                 # It's either cascading protection or regular protection; work out which
 999                                 list($cascadeSources, $restrictions) = $this->mTitle->getCascadeProtectionSources();
1000                                 if ( !$cascadeSources || count( $cascadeSources ) == 0 ) {
1001                                         # Regular protection
1002                                         $notice = wfMsg( 'protectedpagewarning' );
1003                                 } else {
1004                                         # Cascading protection; explain, and list the titles responsible
1005                                         $notice = wfMsg( 'cascadeprotectedwarning' ) . "\n";
1006                                         foreach( $cascadeSources as $source )
1007                                                 $notice .= '* [[:' . $source->getPrefixedText() . "]]\n";
1008                                 }
1009                         }
1010                         $wgOut->addWikiText( $notice );
1011                 }
1012
1013                 if ( $this->kblength === false ) {
1014                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1015                 }
1016                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1017                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
1018                 } elseif( $this->kblength > 29 ) {
1019                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
1020                 }
1021
1022                 #need to parse the preview early so that we know which templates are used,
1023                 #otherwise users with "show preview after edit box" will get a blank list
1024                 if ( $this->formtype == 'preview' ) {
1025                         $previewOutput = $this->getPreviewText();
1026                 }
1027
1028                 $rows = $wgUser->getIntOption( 'rows' );
1029                 $cols = $wgUser->getIntOption( 'cols' );
1030
1031                 $ew = $wgUser->getOption( 'editwidth' );
1032                 if ( $ew ) $ew = " style=\"width:100%\"";
1033                 else $ew = '';
1034
1035                 $q = 'action=submit';
1036                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1037                 $action = $this->mTitle->escapeLocalURL( $q );
1038
1039                 $summary = wfMsg('summary');
1040                 $subject = wfMsg('subject');
1041
1042                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
1043                                 wfMsgExt('cancel', array('parseinline')) );
1044                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1045                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1046                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1047                         htmlspecialchars( wfMsg( 'newwindow' ) );
1048
1049                 global $wgRightsText;
1050                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
1051                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
1052                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1053                                 $wgRightsText ) . "\n</div>";
1054
1055                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1056                         # prepare toolbar for edit buttons
1057                         $toolbar = $this->getEditToolbar();
1058                 } else {
1059                         $toolbar = '';
1060                 }
1061
1062                 // activate checkboxes if user wants them to be always active
1063                 if( !$this->preview && !$this->diff ) {
1064                         # Sort out the "watch" checkbox
1065                         if( $wgUser->getOption( 'watchdefault' ) ) {
1066                                 # Watch all edits
1067                                 $this->watchthis = true;
1068                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1069                                 # Watch creations
1070                                 $this->watchthis = true;
1071                         } elseif( $this->mTitle->userIsWatching() ) {
1072                                 # Already watched
1073                                 $this->watchthis = true;
1074                         }
1075
1076                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1077                 }
1078
1079                 $wgOut->addHTML( $this->editFormPageTop );
1080
1081                 if ( $wgUser->getOption( 'previewontop' ) ) {
1082
1083                         if ( 'preview' == $this->formtype ) {
1084                                 $this->showPreview( $previewOutput );
1085                         } else {
1086                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1087                         }
1088
1089                         if ( 'diff' == $this->formtype ) {
1090                                 $wgOut->addHTML( $this->getDiff() );
1091                         }
1092                 }
1093
1094
1095                 $wgOut->addHTML( $this->editFormTextTop );
1096
1097                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1098                 # Otherwise, show a summary field at the bottom
1099                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1100                 if( $this->section == 'new' ) {
1101                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1102                         $editsummary = '';
1103                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1104                         $summarypreview = '';
1105                 } else {
1106                         $commentsubject = '';
1107                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1108                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1109                         $subjectpreview = '';
1110                 }
1111
1112                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1113                 if( !$this->preview && !$this->diff ) {
1114                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1115                 }
1116                 $templates = ($this->preview || $this->section) ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1117                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1118
1119                 global $wgUseMetadataEdit ;
1120                 if ( $wgUseMetadataEdit ) {
1121                         $metadata = $this->mMetaData ;
1122                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1123                         $top = wfMsgWikiHtml( 'metadata_help' );
1124                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1125                 }
1126                 else $metadata = "" ;
1127
1128                 $hidden = '';
1129                 $recreate = '';
1130                 if ($this->deletedSinceEdit) {
1131                         if ( 'save' != $this->formtype ) {
1132                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
1133                         } else {
1134                                 // Hide the toolbar and edit area, use can click preview to get it back
1135                                 // Add an confirmation checkbox and explanation.
1136                                 $toolbar = '';
1137                                 $hidden = 'type="hidden" style="display:none;"';
1138                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1139                                 $recreate .=
1140                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1141                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1142                         }
1143                 }
1144
1145                 $tabindex = 2;
1146
1147                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1148                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1149
1150                 $checkboxhtml = implode( $checkboxes, "\n" );
1151
1152                 $buttons = $this->getEditButtons( $tabindex );
1153                 $buttonshtml = implode( $buttons, "\n" );
1154
1155                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1156                         ? '' : Xml::hidden( 'safemode', '1' );
1157
1158                 $wgOut->addHTML( <<<END
1159 {$toolbar}
1160 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1161 END
1162 );
1163
1164                 if( is_callable( $formCallback ) ) {
1165                         call_user_func_array( $formCallback, array( &$wgOut ) );
1166                 }
1167
1168                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1169
1170                 // Put these up at the top to ensure they aren't lost on early form submission
1171                 $wgOut->addHTML( "
1172 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1173 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1174 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1175 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1176
1177                 $wgOut->addHTML( <<<END
1178 $recreate
1179 {$commentsubject}
1180 {$subjectpreview}
1181 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1182 cols='{$cols}'{$ew} $hidden>
1183 END
1184 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1185 "
1186 </textarea>
1187                 " );
1188
1189                 $wgOut->addWikiText( $copywarn );
1190                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1191                 $wgOut->addHTML( "
1192 {$metadata}
1193 {$editsummary}
1194 {$summarypreview}
1195 {$checkboxhtml}
1196 {$safemodehtml}
1197 ");
1198
1199                 $wgOut->addHTML(
1200 "<div class='editButtons'>
1201 {$buttonshtml}
1202         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1203 </div><!-- editButtons -->
1204 </div><!-- editOptions -->");
1205
1206                 $wgOut->addHtml( '<div class="mw-editTools">' );
1207                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1208                 $wgOut->addHtml( '</div>' );
1209
1210                 $wgOut->addHTML( $this->editFormTextAfterTools );
1211
1212                 $wgOut->addHTML( "
1213 <div class='templatesUsed'>
1214 {$formattedtemplates}
1215 </div>
1216 " );
1217
1218                 /**
1219                  * To make it harder for someone to slip a user a page
1220                  * which submits an edit form to the wiki without their
1221                  * knowledge, a random token is associated with the login
1222                  * session. If it's not passed back with the submission,
1223                  * we won't save the page, or render user JavaScript and
1224                  * CSS previews.
1225                  *
1226                  * For anon editors, who may not have a session, we just
1227                  * include the constant suffix to prevent editing from
1228                  * broken text-mangling proxies.
1229                  */
1230                 if ( $wgUser->isLoggedIn() )
1231                         $token = htmlspecialchars( $wgUser->editToken() );
1232                 else
1233                         $token = EDIT_TOKEN_SUFFIX;
1234                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1235
1236
1237                 # If a blank edit summary was previously provided, and the appropriate
1238                 # user preference is active, pass a hidden tag here. This will stop the
1239                 # user being bounced back more than once in the event that a summary
1240                 # is not required.
1241                 if( $this->missingSummary ) {
1242                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1243                 }
1244
1245                 # For a bit more sophisticated detection of blank summaries, hash the
1246                 # automatic one and pass that in a hidden field.
1247                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1248                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1249
1250                 if ( $this->isConflict ) {
1251                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1252
1253                         $de = new DifferenceEngine( $this->mTitle );
1254                         $de->setText( $this->textbox2, $this->textbox1 );
1255                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1256
1257                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1258                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1259                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1260                 }
1261                 $wgOut->addHTML( $this->editFormTextBottom );
1262                 $wgOut->addHTML( "</form>\n" );
1263                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1264
1265                         if ( $this->formtype == 'preview') {
1266                                 $this->showPreview( $previewOutput );
1267                         } else {
1268                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1269                         }
1270
1271                         if ( $this->formtype == 'diff') {
1272                                 $wgOut->addHTML( $this->getDiff() );
1273                         }
1274
1275                 }
1276
1277                 wfProfileOut( $fname );
1278         }
1279
1280         /**
1281          * Append preview output to $wgOut.
1282          * Includes category rendering if this is a category page.
1283          *
1284          * @param string $text The HTML to be output for the preview.
1285          */
1286         private function showPreview( $text ) {
1287                 global $wgOut;
1288
1289                 $wgOut->addHTML( '<div id="wikiPreview">' );
1290                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1291                         $this->mArticle->openShowCategory();
1292                 }
1293                 $wgOut->addHTML( $text );
1294                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1295                         $this->mArticle->closeShowCategory();
1296                 }
1297                 $wgOut->addHTML( '</div>' );
1298         }
1299
1300         /**
1301          * Live Preview lets us fetch rendered preview page content and
1302          * add it to the page without refreshing the whole page.
1303          * If not supported by the browser it will fall through to the normal form
1304          * submission method.
1305          *
1306          * This function outputs a script tag to support live preview, and
1307          * returns an onclick handler which should be added to the attributes
1308          * of the preview button
1309          */
1310         function doLivePreviewScript() {
1311                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1312                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1313                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1314                         '"></script>' . "\n" );
1315                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1316                 return "return !livePreview(" .
1317                         "getElementById('wikiPreview')," .
1318                         "editform.wpTextbox1.value," .
1319                         '"' . $liveAction . '"' . ")";
1320         }
1321
1322         function getLastDelete() {
1323                 $dbr = wfGetDB( DB_SLAVE );
1324                 $fname = 'EditPage::getLastDelete';
1325                 $res = $dbr->select(
1326                         array( 'logging', 'user' ),
1327                         array( 'log_type',
1328                                'log_action',
1329                                'log_timestamp',
1330                                'log_user',
1331                                'log_namespace',
1332                                'log_title',
1333                                'log_comment',
1334                                'log_params',
1335                                'user_name', ),
1336                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1337                                'log_title' => $this->mTitle->getDBkey(),
1338                                'log_type' => 'delete',
1339                                'log_action' => 'delete',
1340                                'user_id=log_user' ),
1341                         $fname,
1342                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1343
1344                 if($dbr->numRows($res) == 1) {
1345                         while ( $x = $dbr->fetchObject ( $res ) )
1346                                 $data = $x;
1347                         $dbr->freeResult ( $res ) ;
1348                 } else {
1349                         $data = null;
1350                 }
1351                 return $data;
1352         }
1353
1354         /**
1355          * @todo document
1356          */
1357         function getPreviewText() {
1358                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1359
1360                 $fname = 'EditPage::getPreviewText';
1361                 wfProfileIn( $fname );
1362
1363                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1364                         $msg = 'session_fail_preview';
1365                 } else {
1366                         $msg = 'previewnote';
1367                 }
1368                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1369                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1370                 if ( $this->isConflict ) {
1371                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1372                 }
1373
1374                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1375                 $parserOptions->setEditSection( false );
1376
1377                 global $wgRawHtml;
1378                 if( $wgRawHtml && !$this->mTokenOk ) {
1379                         // Could be an offsite preview attempt. This is very unsafe if
1380                         // HTML is enabled, as it could be an attack.
1381                         return $wgOut->parse( "<div class='previewnote'>" .
1382                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1383                 }
1384
1385                 # don't parse user css/js, show message about preview
1386                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1387
1388                 if ( $this->isCssJsSubpage ) {
1389                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1390                                 $previewtext = wfMsg('usercsspreview');
1391                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1392                                 $previewtext = wfMsg('userjspreview');
1393                         }
1394                         $parserOptions->setTidy(true);
1395                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1396                         $wgOut->addHTML( $parserOutput->mText );
1397                         wfProfileOut( $fname );
1398                         return $previewhead;
1399                 } else {
1400                         $toparse = $this->textbox1;
1401
1402                         # If we're adding a comment, we need to show the
1403                         # summary as the headline
1404                         if($this->section=="new" && $this->summary!="") {
1405                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1406                         }
1407
1408                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1409                         $parserOptions->setTidy(true);
1410                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1411                                         $wgTitle, $parserOptions );
1412
1413                         $previewHTML = $parserOutput->getText();
1414                         $wgOut->addParserOutputNoText( $parserOutput );
1415
1416                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1417                                 foreach ( array_keys( $template ) as $dbk)
1418                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1419
1420                         wfProfileOut( $fname );
1421                         return $previewhead . $previewHTML;
1422                 }
1423         }
1424
1425         /**
1426          * Call the stock "user is blocked" page
1427          */
1428         function blockedPage() {
1429                 global $wgOut, $wgUser;
1430                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1431
1432                 # If the user made changes, preserve them when showing the markup
1433                 # (This happens when a user is blocked during edit, for instance)
1434                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1435                 if( $first ) {
1436                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1437                 } else {
1438                         $source = $this->textbox1;
1439                 }
1440
1441                 # Spit out the source or the user's modified version
1442                 if( $source !== false ) {
1443                         $rows = $wgUser->getOption( 'rows' );
1444                         $cols = $wgUser->getOption( 'cols' );
1445                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1446                         $wgOut->addHtml( '<hr />' );
1447                         $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
1448                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1449                 }
1450         }
1451
1452         /**
1453          * Produce the stock "please login to edit pages" page
1454          */
1455         function userNotLoggedInPage() {
1456                 global $wgUser, $wgOut;
1457                 $skin = $wgUser->getSkin();
1458
1459                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1460                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1461
1462                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1463                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1464                 $wgOut->setArticleRelated( false );
1465
1466                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1467                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1468         }
1469
1470         /**
1471          * Creates a basic error page which informs the user that
1472          * they have to validate their email address before being
1473          * allowed to edit.
1474          */
1475         function userNotConfirmedPage() {
1476                 global $wgOut;
1477
1478                 $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
1479                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1480                 $wgOut->setArticleRelated( false );
1481
1482                 $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
1483                 $wgOut->returnToMain( false );
1484         }
1485
1486         /**
1487          * Creates a basic error page which informs the user that
1488          * they have attempted to edit a nonexistant section.
1489          */
1490         function noSuchSectionPage() {
1491                 global $wgOut;
1492
1493                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1494                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1495                 $wgOut->setArticleRelated( false );
1496
1497                 $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
1498                 $wgOut->returnToMain( false );
1499         }
1500
1501         /**
1502          * Produce the stock "your edit contains spam" page
1503          *
1504          * @param $match Text which triggered one or more filters
1505          */
1506         function spamPage( $match = false ) {
1507                 global $wgOut;
1508
1509                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1510                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1511                 $wgOut->setArticleRelated( false );
1512
1513                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1514                 if ( $match )
1515                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1516
1517                 $wgOut->returnToMain( false );
1518         }
1519
1520         /**
1521          * @private
1522          * @todo document
1523          */
1524         function mergeChangesInto( &$editText ){
1525                 $fname = 'EditPage::mergeChangesInto';
1526                 wfProfileIn( $fname );
1527
1528                 $db = wfGetDB( DB_MASTER );
1529
1530                 // This is the revision the editor started from
1531                 $baseRevision = Revision::loadFromTimestamp(
1532                         $db, $this->mArticle->mTitle, $this->edittime );
1533                 if( is_null( $baseRevision ) ) {
1534                         wfProfileOut( $fname );
1535                         return false;
1536                 }
1537                 $baseText = $baseRevision->getText();
1538
1539                 // The current state, we want to merge updates into it
1540                 $currentRevision =  Revision::loadFromTitle(
1541                         $db, $this->mArticle->mTitle );
1542                 if( is_null( $currentRevision ) ) {
1543                         wfProfileOut( $fname );
1544                         return false;
1545                 }
1546                 $currentText = $currentRevision->getText();
1547
1548                 $result = '';
1549                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1550                         $editText = $result;
1551                         wfProfileOut( $fname );
1552                         return true;
1553                 } else {
1554                         wfProfileOut( $fname );
1555                         return false;
1556                 }
1557         }
1558
1559         /**
1560          * Check if the browser is on a blacklist of user-agents known to
1561          * mangle UTF-8 data on form submission. Returns true if Unicode
1562          * should make it through, false if it's known to be a problem.
1563          * @return bool
1564          * @private
1565          */
1566         function checkUnicodeCompliantBrowser() {
1567                 global $wgBrowserBlackList;
1568                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1569                         // No User-Agent header sent? Trust it by default...
1570                         return true;
1571                 }
1572                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1573                 foreach ( $wgBrowserBlackList as $browser ) {
1574                         if ( preg_match($browser, $currentbrowser) ) {
1575                                 return false;
1576                         }
1577                 }
1578                 return true;
1579         }
1580
1581         /**
1582          * Format an anchor fragment as it would appear for a given section name
1583          * @param string $text
1584          * @return string
1585          * @private
1586          */
1587         function sectionAnchor( $text ) {
1588                 $headline = Sanitizer::decodeCharReferences( $text );
1589                 # strip out HTML
1590                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
1591                 $headline = trim( $headline );
1592                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
1593                 $replacearray = array(
1594                         '%3A' => ':',
1595                         '%' => '.'
1596                 );
1597                 return str_replace(
1598                         array_keys( $replacearray ),
1599                         array_values( $replacearray ),
1600                         $sectionanchor );
1601         }
1602
1603         /**
1604          * Shows a bulletin board style toolbar for common editing functions.
1605          * It can be disabled in the user preferences.
1606          * The necessary JavaScript code can be found in style/wikibits.js.
1607          */
1608         function getEditToolbar() {
1609                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1610
1611                 /**
1612                  * toolarray an array of arrays which each include the filename of
1613                  * the button image (without path), the opening tag, the closing tag,
1614                  * and optionally a sample text that is inserted between the two when no
1615                  * selection is highlighted.
1616                  * The tip text is shown when the user moves the mouse over the button.
1617                  *
1618                  * Already here are accesskeys (key), which are not used yet until someone
1619                  * can figure out a way to make them work in IE. However, we should make
1620                  * sure these keys are not defined on the edit page.
1621                  */
1622                 $toolarray = array(
1623                         array(  'image' => 'button_bold.png',
1624                                 'id'    => 'mw-editbutton-bold',
1625                                 'open'  => '\\\'\\\'\\\'',
1626                                 'close' => '\\\'\\\'\\\'',
1627                                 'sample'=> wfMsg('bold_sample'),
1628                                 'tip'   => wfMsg('bold_tip'),
1629                                 'key'   => 'B'
1630                         ),
1631                         array(  'image' => 'button_italic.png',
1632                                 'id'    => 'mw-editbutton-italic',
1633                                 'open'  => '\\\'\\\'',
1634                                 'close' => '\\\'\\\'',
1635                                 'sample'=> wfMsg('italic_sample'),
1636                                 'tip'   => wfMsg('italic_tip'),
1637                                 'key'   => 'I'
1638                         ),
1639                         array(  'image' => 'button_link.png',
1640                                 'id'    => 'mw-editbutton-link',
1641                                 'open'  => '[[',
1642                                 'close' => ']]',
1643                                 'sample'=> wfMsg('link_sample'),
1644                                 'tip'   => wfMsg('link_tip'),
1645                                 'key'   => 'L'
1646                         ),
1647                         array(  'image' => 'button_extlink.png',
1648                                 'id'    => 'mw-editbutton-extlink',
1649                                 'open'  => '[',
1650                                 'close' => ']',
1651                                 'sample'=> wfMsg('extlink_sample'),
1652                                 'tip'   => wfMsg('extlink_tip'),
1653                                 'key'   => 'X'
1654                         ),
1655                         array(  'image' => 'button_headline.png',
1656                                 'id'    => 'mw-editbutton-headline',
1657                                 'open'  => "\\n== ",
1658                                 'close' => " ==\\n",
1659                                 'sample'=> wfMsg('headline_sample'),
1660                                 'tip'   => wfMsg('headline_tip'),
1661                                 'key'   => 'H'
1662                         ),
1663                         array(  'image' => 'button_image.png',
1664                                 'id'    => 'mw-editbutton-image',
1665                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1666                                 'close' => ']]',
1667                                 'sample'=> wfMsg('image_sample'),
1668                                 'tip'   => wfMsg('image_tip'),
1669                                 'key'   => 'D'
1670                         ),
1671                         array(  'image' => 'button_media.png',
1672                                 'id'    => 'mw-editbutton-media',
1673                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1674                                 'close' => ']]',
1675                                 'sample'=> wfMsg('media_sample'),
1676                                 'tip'   => wfMsg('media_tip'),
1677                                 'key'   => 'M'
1678                         ),
1679                         array(  'image' => 'button_math.png',
1680                                 'id'    => 'mw-editbutton-math',
1681                                 'open'  => "<math>",
1682                                 'close' => "<\\/math>",
1683                                 'sample'=> wfMsg('math_sample'),
1684                                 'tip'   => wfMsg('math_tip'),
1685                                 'key'   => 'C'
1686                         ),
1687                         array(  'image' => 'button_nowiki.png',
1688                                 'id'    => 'mw-editbutton-nowiki',
1689                                 'open'  => "<nowiki>",
1690                                 'close' => "<\\/nowiki>",
1691                                 'sample'=> wfMsg('nowiki_sample'),
1692                                 'tip'   => wfMsg('nowiki_tip'),
1693                                 'key'   => 'N'
1694                         ),
1695                         array(  'image' => 'button_sig.png',
1696                                 'id'    => 'mw-editbutton-signature',
1697                                 'open'  => '--~~~~',
1698                                 'close' => '',
1699                                 'sample'=> '',
1700                                 'tip'   => wfMsg('sig_tip'),
1701                                 'key'   => 'Y'
1702                         ),
1703                         array(  'image' => 'button_hr.png',
1704                                 'id'    => 'mw-editbutton-hr',
1705                                 'open'  => "\\n----\\n",
1706                                 'close' => '',
1707                                 'sample'=> '',
1708                                 'tip'   => wfMsg('hr_tip'),
1709                                 'key'   => 'R'
1710                         )
1711                 );
1712                 $toolbar = "<div id='toolbar'>\n";
1713                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1714
1715                 foreach($toolarray as $tool) {
1716
1717                         $cssId = $tool['id'];
1718                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1719                         $open=$tool['open'];
1720                         $close=$tool['close'];
1721                         $sample = wfEscapeJsString( $tool['sample'] );
1722
1723                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1724                         // Older browsers show a "speedtip" type message only for ALT.
1725                         // Ideally these should be different, realistically they
1726                         // probably don't need to be.
1727                         $tip = wfEscapeJsString( $tool['tip'] );
1728
1729                         #$key = $tool["key"];
1730
1731                         $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
1732                 }
1733
1734                 $toolbar.="/*]]>*/\n</script>";
1735                 $toolbar.="\n</div>";
1736                 return $toolbar;
1737         }
1738
1739         /**
1740          * Returns an array of html code of the following checkboxes:
1741          * minor and watch
1742          *
1743          * @param $tabindex Current tabindex
1744          * @param $skin Skin object
1745          * @param $checked Array of checkbox => bool, where bool indicates the checked
1746          *                 status of the checkbox
1747          *
1748          * @return array
1749          */
1750         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1751                 global $wgUser;
1752
1753                 $checkboxes = array();
1754
1755                 $checkboxes['minor'] = '';
1756                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1757                 if ( $wgUser->isAllowed('minoredit') ) {
1758                         $attribs = array(
1759                                 'tabindex'  => ++$tabindex,
1760                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1761                                 'id'        => 'wpMinoredit',
1762                         );
1763                         $checkboxes['minor'] =
1764                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1765                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1766                 }
1767
1768                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1769                 $checkboxes['watch'] = '';
1770                 if ( $wgUser->isLoggedIn() ) {
1771                         $attribs = array(
1772                                 'tabindex'  => ++$tabindex,
1773                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1774                                 'id'        => 'wpWatchthis',
1775                         );
1776                         $checkboxes['watch'] =
1777                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1778                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1779                 }
1780                 return $checkboxes;
1781         }
1782
1783         /**
1784          * Returns an array of html code of the following buttons:
1785          * save, diff, preview and live
1786          *
1787          * @param $tabindex Current tabindex
1788          *
1789          * @return array
1790          */
1791         public function getEditButtons(&$tabindex) {
1792                 global $wgLivePreview, $wgUser;
1793
1794                 $buttons = array();
1795
1796                 $temp = array(
1797                         'id'        => 'wpSave',
1798                         'name'      => 'wpSave',
1799                         'type'      => 'submit',
1800                         'tabindex'  => ++$tabindex,
1801                         'value'     => wfMsg('savearticle'),
1802                         'accesskey' => wfMsg('accesskey-save'),
1803                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1804                 );
1805                 $buttons['save'] = wfElement('input', $temp, '');
1806
1807                 ++$tabindex; // use the same for preview and live preview
1808                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1809                         $temp = array(
1810                                 'id'        => 'wpPreview',
1811                                 'name'      => 'wpPreview',
1812                                 'type'      => 'submit',
1813                                 'tabindex'  => $tabindex,
1814                                 'value'     => wfMsg('showpreview'),
1815                                 'accesskey' => '',
1816                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1817                                 'style'     => 'display: none;',
1818                         );
1819                         $buttons['preview'] = wfElement('input', $temp, '');
1820
1821                         $temp = array(
1822                                 'id'        => 'wpLivePreview',
1823                                 'name'      => 'wpLivePreview',
1824                                 'type'      => 'submit',
1825                                 'tabindex'  => $tabindex,
1826                                 'value'     => wfMsg('showlivepreview'),
1827                                 'accesskey' => wfMsg('accesskey-preview'),
1828                                 'title'     => '',
1829                                 'onclick'   => $this->doLivePreviewScript(),
1830                         );
1831                         $buttons['live'] = wfElement('input', $temp, '');
1832                 } else {
1833                         $temp = array(
1834                                 'id'        => 'wpPreview',
1835                                 'name'      => 'wpPreview',
1836                                 'type'      => 'submit',
1837                                 'tabindex'  => $tabindex,
1838                                 'value'     => wfMsg('showpreview'),
1839                                 'accesskey' => wfMsg('accesskey-preview'),
1840                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1841                         );
1842                         $buttons['preview'] = wfElement('input', $temp, '');
1843                         $buttons['live'] = '';
1844                 }
1845
1846                 $temp = array(
1847                         'id'        => 'wpDiff',
1848                         'name'      => 'wpDiff',
1849                         'type'      => 'submit',
1850                         'tabindex'  => ++$tabindex,
1851                         'value'     => wfMsg('showdiff'),
1852                         'accesskey' => wfMsg('accesskey-diff'),
1853                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1854                 );
1855                 $buttons['diff'] = wfElement('input', $temp, '');
1856
1857                 return $buttons;
1858         }
1859
1860         /**
1861          * Output preview text only. This can be sucked into the edit page
1862          * via JavaScript, and saves the server time rendering the skin as
1863          * well as theoretically being more robust on the client (doesn't
1864          * disturb the edit box's undo history, won't eat your text on
1865          * failure, etc).
1866          *
1867          * @todo This doesn't include category or interlanguage links.
1868          *       Would need to enhance it a bit, <s>maybe wrap them in XML
1869          *       or something...</s> that might also require more skin
1870          *       initialization, so check whether that's a problem.
1871          */
1872         function livePreview() {
1873                 global $wgOut;
1874                 $wgOut->disable();
1875                 header( 'Content-type: text/xml; charset=utf-8' );
1876                 header( 'Cache-control: no-cache' );
1877
1878                 $s =
1879                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
1880                 Xml::openElement( 'livepreview' ) .
1881                 Xml::element( 'preview', null, $this->getPreviewText() ) .
1882                 Xml::element( 'br', array( 'style' => 'clear: both;' ) ) .
1883                 Xml::closeElement( 'livepreview' );
1884                 echo $s;
1885         }
1886
1887
1888         /**
1889          * Get a diff between the current contents of the edit box and the
1890          * version of the page we're editing from.
1891          *
1892          * If this is a section edit, we'll replace the section as for final
1893          * save and then make a comparison.
1894          *
1895          * @return string HTML
1896          */
1897         function getDiff() {
1898                 $oldtext = $this->mArticle->fetchContent();
1899                 $newtext = $this->mArticle->replaceSection(
1900                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1901                 $newtext = $this->mArticle->preSaveTransform( $newtext );
1902                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
1903                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
1904                 if ( $oldtext !== false  || $newtext != '' ) {
1905                         $de = new DifferenceEngine( $this->mTitle );
1906                         $de->setText( $oldtext, $newtext );
1907                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1908                 } else {
1909                         $difftext = '';
1910                 }
1911
1912                 return '<div id="wikiDiff">' . $difftext . '</div>';
1913         }
1914
1915         /**
1916          * Filter an input field through a Unicode de-armoring process if it
1917          * came from an old browser with known broken Unicode editing issues.
1918          *
1919          * @param WebRequest $request
1920          * @param string $field
1921          * @return string
1922          * @private
1923          */
1924         function safeUnicodeInput( $request, $field ) {
1925                 $text = rtrim( $request->getText( $field ) );
1926                 return $request->getBool( 'safemode' )
1927                         ? $this->unmakesafe( $text )
1928                         : $text;
1929         }
1930
1931         /**
1932          * Filter an output field through a Unicode armoring process if it is
1933          * going to an old browser with known broken Unicode editing issues.
1934          *
1935          * @param string $text
1936          * @return string
1937          * @private
1938          */
1939         function safeUnicodeOutput( $text ) {
1940                 global $wgContLang;
1941                 $codedText = $wgContLang->recodeForEdit( $text );
1942                 return $this->checkUnicodeCompliantBrowser()
1943                         ? $codedText
1944                         : $this->makesafe( $codedText );
1945         }
1946
1947         /**
1948          * A number of web browsers are known to corrupt non-ASCII characters
1949          * in a UTF-8 text editing environment. To protect against this,
1950          * detected browsers will be served an armored version of the text,
1951          * with non-ASCII chars converted to numeric HTML character references.
1952          *
1953          * Preexisting such character references will have a 0 added to them
1954          * to ensure that round-trips do not alter the original data.
1955          *
1956          * @param string $invalue
1957          * @return string
1958          * @private
1959          */
1960         function makesafe( $invalue ) {
1961                 // Armor existing references for reversability.
1962                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1963
1964                 $bytesleft = 0;
1965                 $result = "";
1966                 $working = 0;
1967                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1968                         $bytevalue = ord( $invalue{$i} );
1969                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1970                                 $result .= chr( $bytevalue );
1971                                 $bytesleft = 0;
1972                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
1973                                 $working = $working << 6;
1974                                 $working += ($bytevalue & 0x3F);
1975                                 $bytesleft--;
1976                                 if( $bytesleft <= 0 ) {
1977                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
1978                                 }
1979                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
1980                                 $working = $bytevalue & 0x1F;
1981                                 $bytesleft = 1;
1982                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
1983                                 $working = $bytevalue & 0x0F;
1984                                 $bytesleft = 2;
1985                         } else { //1111 0xxx
1986                                 $working = $bytevalue & 0x07;
1987                                 $bytesleft = 3;
1988                         }
1989                 }
1990                 return $result;
1991         }
1992
1993         /**
1994          * Reverse the previously applied transliteration of non-ASCII characters
1995          * back to UTF-8. Used to protect data from corruption by broken web browsers
1996          * as listed in $wgBrowserBlackList.
1997          *
1998          * @param string $invalue
1999          * @return string
2000          * @private
2001          */
2002         function unmakesafe( $invalue ) {
2003                 $result = "";
2004                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2005                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2006                                 $i += 3;
2007                                 $hexstring = "";
2008                                 do {
2009                                         $hexstring .= $invalue{$i};
2010                                         $i++;
2011                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2012
2013                                 // Do some sanity checks. These aren't needed for reversability,
2014                                 // but should help keep the breakage down if the editor
2015                                 // breaks one of the entities whilst editing.
2016                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2017                                         $codepoint = hexdec($hexstring);
2018                                         $result .= codepointToUtf8( $codepoint );
2019                                 } else {
2020                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2021                                 }
2022                         } else {
2023                                 $result .= substr( $invalue, $i, 1 );
2024                         }
2025                 }
2026                 // reverse the transform that we made for reversability reasons.
2027                 return strtr( $result, array( "&#x0" => "&#x" ) );
2028         }
2029
2030         function noCreatePermission() {
2031                 global $wgOut;
2032                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2033                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
2034         }
2035
2036 }
2037
2038 ?>