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                                 # Let the user know about previous deletions if applicable
 608                                 $this->showDeletionLog( $wgOut );
 609                 }
 610         }
 611
 612         /**
 613          * Attempt submission
 614          * @return bool false if output is done, true if the rest of the form should be displayed
 615          */
 616         function attemptSave() {
 617                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
 618                 global $wgMaxArticleSize;
 619
 620                 $fname = 'EditPage::attemptSave';
 621                 wfProfileIn( $fname );
 622                 wfProfileIn( "$fname-checks" );
 623
 624                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 625                 {
 626                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 627                         return false;
 628                 }
 629
 630                 # Reintegrate metadata
 631                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 632                 $this->mMetaData = '' ;
 633
 634                 # Check for spam
 635                 $matches = array();
 636                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 637                         $this->spamPage ( $matches[0] );
 638                         wfProfileOut( "$fname-checks" );
 639                         wfProfileOut( $fname );
 640                         return false;
 641                 }
 642                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 643                         # Error messages or other handling should be performed by the filter function
 644                         wfProfileOut( $fname );
 645                         wfProfileOut( "$fname-checks" );
 646                         return false;
 647                 }
 648                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 649                         # Error messages etc. could be handled within the hook...
 650                         wfProfileOut( $fname );
 651                         wfProfileOut( "$fname-checks" );
 652                         return false;
 653                 } elseif( $this->hookError != '' ) {
 654                         # ...or the hook could be expecting us to produce an error
 655                         wfProfileOut( "$fname-checks " );
 656                         wfProfileOut( $fname );
 657                         return true;
 658                 }
 659                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 660                         # Check block state against master, thus 'false'.
 661                         $this->blockedPage();
 662                         wfProfileOut( "$fname-checks" );
 663                         wfProfileOut( $fname );
 664                         return false;
 665                 }
 666                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 667                 if ( $this->kblength > $wgMaxArticleSize ) {
 668                         // Error will be displayed by showEditForm()
 669                         $this->tooBig = true;
 670                         wfProfileOut( "$fname-checks" );
 671                         wfProfileOut( $fname );
 672                         return true;
 673                 }
 674
 675                 if ( !$wgUser->isAllowed('edit') ) {
 676                         if ( $wgUser->isAnon() ) {
 677                                 $this->userNotLoggedInPage();
 678                                 wfProfileOut( "$fname-checks" );
 679                                 wfProfileOut( $fname );
 680                                 return false;
 681                         }
 682                         else {
 683                                 $wgOut->readOnlyPage();
 684                                 wfProfileOut( "$fname-checks" );
 685                                 wfProfileOut( $fname );
 686                                 return false;
 687                         }
 688                 }
 689
 690                 if ( wfReadOnly() ) {
 691                         $wgOut->readOnlyPage();
 692                         wfProfileOut( "$fname-checks" );
 693                         wfProfileOut( $fname );
 694                         return false;
 695                 }
 696                 if ( $wgUser->pingLimiter() ) {
 697                         $wgOut->rateLimited();
 698                         wfProfileOut( "$fname-checks" );
 699                         wfProfileOut( $fname );
 700                         return false;
 701                 }
 702
 703                 # If the article has been deleted while editing, don't save it without
 704                 # confirmation
 705                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 706                         wfProfileOut( "$fname-checks" );
 707                         wfProfileOut( $fname );
 708                         return true;
 709                 }
 710
 711                 wfProfileOut( "$fname-checks" );
 712
 713                 # If article is new, insert it.
 714                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 715                 if ( 0 == $aid ) {
 716
 717                         // Late check for create permission, just in case *PARANOIA*
 718                         if ( !$this->mTitle->userCan( 'create' ) ) {
 719                                 wfDebug( "$fname: no create permission\n" );
 720                                 $this->noCreatePermission();
 721                                 wfProfileOut( $fname );
 722                                 return;
 723                         }
 724
 725                         # Don't save a new article if it's blank.
 726                         if ( ( '' == $this->textbox1 ) ) {
 727                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 728                                         wfProfileOut( $fname );
 729                                         return false;
 730                         }
 731
 732                         $isComment=($this->section=='new');
 733                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 734                                 $this->minoredit, $this->watchthis, false, $isComment);
 735
 736                         wfProfileOut( $fname );
 737                         return false;
 738                 }
 739
 740                 # Article exists. Check for edit conflict.
 741
 742                 $this->mArticle->clear(); # Force reload of dates, etc.
 743                 $this->mArticle->forUpdate( true ); # Lock the article
 744
 745                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 746
 747                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 748                         $this->isConflict = true;
 749                         if( $this->section == 'new' ) {
 750                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 751                                         $this->mArticle->getComment() == $this->summary ) {
 752                                         // Probably a duplicate submission of a new comment.
 753                                         // This can happen when squid resends a request after
 754                                         // a timeout but the first one actually went through.
 755                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 756                                 } else {
 757                                         // New comment; suppress conflict.
 758                                         $this->isConflict = false;
 759                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 760                                 }
 761                         }
 762                 }
 763                 $userid = $wgUser->getID();
 764
 765                 if ( $this->isConflict) {
 766                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 767                                 $this->mArticle->getTimestamp() . "'\n" );
 768                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 769                 }
 770                 else {
 771                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 772                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 773                 }
 774                 if( is_null( $text ) ) {
 775                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 776                         $this->isConflict = true;
 777                         $text = $this->textbox1;
 778                 }
 779
 780                 # Suppress edit conflict with self, except for section edits where merging is required.
 781                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 782                         wfDebug( "Suppressing edit conflict, same user.\n" );
 783                         $this->isConflict = false;
 784                 } else {
 785                         # switch from section editing to normal editing in edit conflict
 786                         if($this->isConflict) {
 787                                 # Attempt merge
 788                                 if( $this->mergeChangesInto( $text ) ){
 789                                         // Successful merge! Maybe we should tell the user the good news?
 790                                         $this->isConflict = false;
 791                                         wfDebug( "Suppressing edit conflict, successful merge.\n" );
 792                                 } else {
 793                                         $this->section = '';
 794                                         $this->textbox1 = $text;
 795                                         wfDebug( "Keeping edit conflict, failed merge.\n" );
 796                                 }
 797                         }
 798                 }
 799
 800                 if ( $this->isConflict ) {
 801                         wfProfileOut( $fname );
 802                         return true;
 803                 }
 804
 805                 $oldtext = $this->mArticle->getContent();
 806
 807                 # Handle the user preference to force summaries here, but not for null edits
 808                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 809                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 810                         if( md5( $this->summary ) == $this->autoSumm ) {
 811                                 $this->missingSummary = true;
 812                                 wfProfileOut( $fname );
 813                                 return( true );
 814                         }
 815                 }
 816
 817                 #And a similar thing for new sections
 818                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 819                         if (trim($this->summary) == '') {
 820                                 $this->missingSummary = true;
 821                                 wfProfileOut( $fname );
 822                                 return( true );
 823                         }
 824                 }
 825
 826                 # All's well
 827                 wfProfileIn( "$fname-sectionanchor" );
 828                 $sectionanchor = '';
 829                 if( $this->section == 'new' ) {
 830                         if ( $this->textbox1 == '' ) {
 831                                 $this->missingComment = true;
 832                                 return true;
 833                         }
 834                         if( $this->summary != '' ) {
 835                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 836                         }
 837                 } elseif( $this->section != '' ) {
 838                         # Try to get a section anchor from the section source, redirect to edited section if header found
 839                         # XXX: might be better to integrate this into Article::replaceSection
 840                         # for duplicate heading checking and maybe parsing
 841                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 842                         # we can't deal with anchors, includes, html etc in the header for now,
 843                         # headline would need to be parsed to improve this
 844                         if($hasmatch and strlen($matches[2]) > 0) {
 845                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 846                         }
 847                 }
 848                 wfProfileOut( "$fname-sectionanchor" );
 849
 850                 // Save errors may fall down to the edit form, but we've now
 851                 // merged the section into full text. Clear the section field
 852                 // so that later submission of conflict forms won't try to
 853                 // replace that into a duplicated mess.
 854                 $this->textbox1 = $text;
 855                 $this->section = '';
 856
 857                 // Check for length errors again now that the section is merged in
 858                 $this->kblength = (int)(strlen( $text ) / 1024);
 859                 if ( $this->kblength > $wgMaxArticleSize ) {
 860                         $this->tooBig = true;
 861                         wfProfileOut( $fname );
 862                         return true;
 863                 }
 864
 865                 # update the article here
 866                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 867                         $this->watchthis, '', $sectionanchor ) ) {
 868                         wfProfileOut( $fname );
 869                         return false;
 870                 } else {
 871                         $this->isConflict = true;
 872                 }
 873                 wfProfileOut( $fname );
 874                 return true;
 875         }
 876
 877         /**
 878          * Initialise form fields in the object
 879          * Called on the first invocation, e.g. when a user clicks an edit link
 880          */
 881         function initialiseForm() {
 882                 $this->edittime = $this->mArticle->getTimestamp();
 883                 $this->summary = '';
 884                 $this->textbox1 = $this->getContent(false);
 885                 if ($this->textbox1 === false) return false;
 886
 887                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 888                         $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
 889                 wfProxyCheck();
 890                 return true;
 891         }
 892
 893         /**
 894          * Send the edit form and related headers to $wgOut
 895          * @param $formCallback Optional callable that takes an OutputPage
 896          *                      parameter; will be called during form output
 897          *                      near the top, for captchas and the like.
 898          */
 899         function showEditForm( $formCallback=null ) {
 900                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 901
 902                 $fname = 'EditPage::showEditForm';
 903                 wfProfileIn( $fname );
 904
 905                 $sk = $wgUser->getSkin();
 906
 907                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 908
 909                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 910
 911                 # Enabled article-related sidebar, toplinks, etc.
 912                 $wgOut->setArticleRelated( true );
 913
 914                 if ( $this->isConflict ) {
 915                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 916                         $wgOut->setPageTitle( $s );
 917                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 918
 919                         $this->textbox2 = $this->textbox1;
 920                         $this->textbox1 = $this->getContent();
 921                         $this->edittime = $this->mArticle->getTimestamp();
 922                 } else {
 923
 924                         if( $this->section != '' ) {
 925                                 if( $this->section == 'new' ) {
 926                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 927                                 } else {
 928                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 929                                         $matches = array();
 930                                         if( !$this->summary && !$this->preview && !$this->diff ) {
 931                                                 preg_match( "/^(=+)(.+)\\1/mi",
 932                                                         $this->textbox1,
 933                                                         $matches );
 934                                                 if( !empty( $matches[2] ) ) {
 935                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 936                                                 }
 937                                         }
 938                                 }
 939                         } else {
 940                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 941                         }
 942                         $wgOut->setPageTitle( $s );
 943
 944                         if ( $this->missingComment ) {
 945                                 $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
 946                         }
 947
 948                         if( $this->missingSummary && $this->section != 'new' ) {
 949                                 $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
 950                         }
 951
 952                         if( $this->missingSummary && $this->section == 'new' ) {
 953                                 $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
 954                         }
 955
 956                         if( !$this->hookError == '' ) {
 957                                 $wgOut->addWikiText( $this->hookError );
 958                         }
 959
 960                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 961                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 962                         }
 963                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
 964                         // Let sysop know that this will make private content public if saved
 965                                 if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
 966                                         $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
 967                                 }
 968                                 if( !$this->mArticle->mRevision->isCurrent() ) {
 969                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
 970                                         $wgOut->addWikiText( wfMsg( 'editingold' ) );
 971                                 }
 972                         }
 973                 }
 974
 975                 if( wfReadOnly() ) {
 976                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 977                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
 978                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
 979                 } else {
 980                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
 981                                 # Check the skin exists
 982                                 if( $this->isValidCssJsSubpage ) {
 983                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
 984                                 } else {
 985                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
 986                                 }
 987                         }
 988                 }
 989
 990                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 991                         # Show a warning if editing an interface message
 992                         $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
 993                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
 994                         # Is the title semi-protected?
 995                         if( $this->mTitle->isSemiProtected() ) {
 996                                 $notice = wfMsg( 'semiprotectedpagewarning' );
 997                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
 998                                         $notice = '';
 999                         } else {
1000                         # Then it must be protected based on static groups (regular)
1001                                 $notice = wfMsg( 'protectedpagewarning' );
1002                         }
1003                         $wgOut->addWikiText( $notice );
1004                 }
1005                 if ( $this->mTitle->isCascadeProtected() ) {
1006                         # Is this page under cascading protection from some source pages?
1007                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1008                         if ( count($cascadeSources) > 0 ) {
1009                                 # Explain, and list the titles responsible
1010                                 $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
1011                                 foreach( $cascadeSources as $id => $page )
1012                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1013                                 }
1014                         $wgOut->addWikiText( $notice );
1015                 }
1016
1017                 if ( $this->kblength === false ) {
1018                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1019                 }
1020                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1021                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
1022                 } elseif( $this->kblength > 29 ) {
1023                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
1024                 }
1025
1026                 #need to parse the preview early so that we know which templates are used,
1027                 #otherwise users with "show preview after edit box" will get a blank list
1028                 if ( $this->formtype == 'preview' ) {
1029                         $previewOutput = $this->getPreviewText();
1030                 }
1031
1032                 $rows = $wgUser->getIntOption( 'rows' );
1033                 $cols = $wgUser->getIntOption( 'cols' );
1034
1035                 $ew = $wgUser->getOption( 'editwidth' );
1036                 if ( $ew ) $ew = " style=\"width:100%\"";
1037                 else $ew = '';
1038
1039                 $q = 'action=submit';
1040                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1041                 $action = $this->mTitle->escapeLocalURL( $q );
1042
1043                 $summary = wfMsg('summary');
1044                 $subject = wfMsg('subject');
1045
1046                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
1047                                 wfMsgExt('cancel', array('parseinline')) );
1048                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1049                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1050                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1051                         htmlspecialchars( wfMsg( 'newwindow' ) );
1052
1053                 global $wgRightsText;
1054                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
1055                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
1056                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1057                                 $wgRightsText ) . "\n</div>";
1058
1059                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1060                         # prepare toolbar for edit buttons
1061                         $toolbar = $this->getEditToolbar();
1062                 } else {
1063                         $toolbar = '';
1064                 }
1065
1066                 // activate checkboxes if user wants them to be always active
1067                 if( !$this->preview && !$this->diff ) {
1068                         # Sort out the "watch" checkbox
1069                         if( $wgUser->getOption( 'watchdefault' ) ) {
1070                                 # Watch all edits
1071                                 $this->watchthis = true;
1072                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1073                                 # Watch creations
1074                                 $this->watchthis = true;
1075                         } elseif( $this->mTitle->userIsWatching() ) {
1076                                 # Already watched
1077                                 $this->watchthis = true;
1078                         }
1079
1080                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1081                 }
1082
1083                 $wgOut->addHTML( $this->editFormPageTop );
1084
1085                 if ( $wgUser->getOption( 'previewontop' ) ) {
1086
1087                         if ( 'preview' == $this->formtype ) {
1088                                 $this->showPreview( $previewOutput );
1089                         } else {
1090                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1091                         }
1092
1093                         if ( 'diff' == $this->formtype ) {
1094                                 $wgOut->addStyle( 'common/diff.css' );
1095                                 $wgOut->addHTML( $this->getDiff() );
1096                         }
1097                 }
1098
1099
1100                 $wgOut->addHTML( $this->editFormTextTop );
1101
1102                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1103                 # Otherwise, show a summary field at the bottom
1104                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1105                 if( $this->section == 'new' ) {
1106                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1107                         $editsummary = '';
1108                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1109                         $summarypreview = '';
1110                 } else {
1111                         $commentsubject = '';
1112                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1113                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1114                         $subjectpreview = '';
1115                 }
1116
1117                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1118                 if( !$this->preview && !$this->diff ) {
1119                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1120                 }
1121                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1122                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1123
1124                 global $wgUseMetadataEdit ;
1125                 if ( $wgUseMetadataEdit ) {
1126                         $metadata = $this->mMetaData ;
1127                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1128                         $top = wfMsgWikiHtml( 'metadata_help' );
1129                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1130                 }
1131                 else $metadata = "" ;
1132
1133                 $hidden = '';
1134                 $recreate = '';
1135                 if ($this->deletedSinceEdit) {
1136                         if ( 'save' != $this->formtype ) {
1137                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
1138                         } else {
1139                                 // Hide the toolbar and edit area, use can click preview to get it back
1140                                 // Add an confirmation checkbox and explanation.
1141                                 $toolbar = '';
1142                                 $hidden = 'type="hidden" style="display:none;"';
1143                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1144                                 $recreate .=
1145                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1146                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1147                         }
1148                 }
1149
1150                 $tabindex = 2;
1151
1152                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1153                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1154
1155                 $checkboxhtml = implode( $checkboxes, "\n" );
1156
1157                 $buttons = $this->getEditButtons( $tabindex );
1158                 $buttonshtml = implode( $buttons, "\n" );
1159
1160                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1161                         ? '' : Xml::hidden( 'safemode', '1' );
1162
1163                 $wgOut->addHTML( <<<END
1164 {$toolbar}
1165 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1166 END
1167 );
1168
1169                 if( is_callable( $formCallback ) ) {
1170                         call_user_func_array( $formCallback, array( &$wgOut ) );
1171                 }
1172
1173                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1174
1175                 // Put these up at the top to ensure they aren't lost on early form submission
1176                 $wgOut->addHTML( "
1177 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1178 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1179 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1180 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1181
1182                 $wgOut->addHTML( <<<END
1183 $recreate
1184 {$commentsubject}
1185 {$subjectpreview}
1186 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1187 cols='{$cols}'{$ew} $hidden>
1188 END
1189 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1190 "
1191 </textarea>
1192                 " );
1193
1194                 $wgOut->addWikiText( $copywarn );
1195                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1196                 $wgOut->addHTML( "
1197 {$metadata}
1198 {$editsummary}
1199 {$summarypreview}
1200 {$checkboxhtml}
1201 {$safemodehtml}
1202 ");
1203
1204                 $wgOut->addHTML(
1205 "<div class='editButtons'>
1206 {$buttonshtml}
1207         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1208 </div><!-- editButtons -->
1209 </div><!-- editOptions -->");
1210
1211                 $wgOut->addHtml( '<div class="mw-editTools">' );
1212                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1213                 $wgOut->addHtml( '</div>' );
1214
1215                 $wgOut->addHTML( $this->editFormTextAfterTools );
1216
1217                 $wgOut->addHTML( "
1218 <div class='templatesUsed'>
1219 {$formattedtemplates}
1220 </div>
1221 " );
1222
1223                 /**
1224                  * To make it harder for someone to slip a user a page
1225                  * which submits an edit form to the wiki without their
1226                  * knowledge, a random token is associated with the login
1227                  * session. If it's not passed back with the submission,
1228                  * we won't save the page, or render user JavaScript and
1229                  * CSS previews.
1230                  *
1231                  * For anon editors, who may not have a session, we just
1232                  * include the constant suffix to prevent editing from
1233                  * broken text-mangling proxies.
1234                  */
1235                 if ( $wgUser->isLoggedIn() )
1236                         $token = htmlspecialchars( $wgUser->editToken() );
1237                 else
1238                         $token = EDIT_TOKEN_SUFFIX;
1239                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1240
1241
1242                 # If a blank edit summary was previously provided, and the appropriate
1243                 # user preference is active, pass a hidden tag here. This will stop the
1244                 # user being bounced back more than once in the event that a summary
1245                 # is not required.
1246                 if( $this->missingSummary ) {
1247                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1248                 }
1249
1250                 # For a bit more sophisticated detection of blank summaries, hash the
1251                 # automatic one and pass that in a hidden field.
1252                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1253                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1254
1255                 if ( $this->isConflict ) {
1256                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1257
1258                         $de = new DifferenceEngine( $this->mTitle );
1259                         $de->setText( $this->textbox2, $this->textbox1 );
1260                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1261
1262                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1263                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1264                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1265                 }
1266                 $wgOut->addHTML( $this->editFormTextBottom );
1267                 $wgOut->addHTML( "</form>\n" );
1268                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1269
1270                         if ( $this->formtype == 'preview') {
1271                                 $this->showPreview( $previewOutput );
1272                         } else {
1273                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1274                         }
1275
1276                         if ( $this->formtype == 'diff') {
1277                                 $wgOut->addStyle( 'common/diff.css' );
1278                                 $wgOut->addHTML( $this->getDiff() );
1279                         }
1280
1281                 }
1282
1283                 wfProfileOut( $fname );
1284         }
1285
1286         /**
1287          * Append preview output to $wgOut.
1288          * Includes category rendering if this is a category page.
1289          *
1290          * @param string $text The HTML to be output for the preview.
1291          */
1292         private function showPreview( $text ) {
1293                 global $wgOut;
1294
1295                 $wgOut->addHTML( '<div id="wikiPreview">' );
1296                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1297                         $this->mArticle->openShowCategory();
1298                 }
1299                 $wgOut->addHTML( $text );
1300                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1301                         $this->mArticle->closeShowCategory();
1302                 }
1303                 $wgOut->addHTML( '</div>' );
1304         }
1305
1306         /**
1307          * Live Preview lets us fetch rendered preview page content and
1308          * add it to the page without refreshing the whole page.
1309          * If not supported by the browser it will fall through to the normal form
1310          * submission method.
1311          *
1312          * This function outputs a script tag to support live preview, and
1313          * returns an onclick handler which should be added to the attributes
1314          * of the preview button
1315          */
1316         function doLivePreviewScript() {
1317                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1318                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1319                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1320                         '"></script>' . "\n" );
1321                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1322                 return "return !livePreview(" .
1323                         "getElementById('wikiPreview')," .
1324                         "editform.wpTextbox1.value," .
1325                         '"' . $liveAction . '"' . ")";
1326         }
1327
1328         function getLastDelete() {
1329                 $dbr = wfGetDB( DB_SLAVE );
1330                 $fname = 'EditPage::getLastDelete';
1331                 $res = $dbr->select(
1332                         array( 'logging', 'user' ),
1333                         array( 'log_type',
1334                                'log_action',
1335                                'log_timestamp',
1336                                'log_user',
1337                                'log_namespace',
1338                                'log_title',
1339                                'log_comment',
1340                                'log_params',
1341                                'user_name', ),
1342                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1343                                'log_title' => $this->mTitle->getDBkey(),
1344                                'log_type' => 'delete',
1345                                'log_action' => 'delete',
1346                                'user_id=log_user' ),
1347                         $fname,
1348                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1349
1350                 if($dbr->numRows($res) == 1) {
1351                         while ( $x = $dbr->fetchObject ( $res ) )
1352                                 $data = $x;
1353                         $dbr->freeResult ( $res ) ;
1354                 } else {
1355                         $data = null;
1356                 }
1357                 return $data;
1358         }
1359
1360         /**
1361          * @todo document
1362          */
1363         function getPreviewText() {
1364                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1365
1366                 $fname = 'EditPage::getPreviewText';
1367                 wfProfileIn( $fname );
1368
1369                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1370                         $msg = 'session_fail_preview';
1371                 } else {
1372                         $msg = 'previewnote';
1373                 }
1374                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1375                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1376                 if ( $this->isConflict ) {
1377                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1378                 }
1379
1380                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1381                 $parserOptions->setEditSection( false );
1382
1383                 global $wgRawHtml;
1384                 if( $wgRawHtml && !$this->mTokenOk ) {
1385                         // Could be an offsite preview attempt. This is very unsafe if
1386                         // HTML is enabled, as it could be an attack.
1387                         return $wgOut->parse( "<div class='previewnote'>" .
1388                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1389                 }
1390
1391                 # don't parse user css/js, show message about preview
1392                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1393
1394                 if ( $this->isCssJsSubpage ) {
1395                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1396                                 $previewtext = wfMsg('usercsspreview');
1397                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1398                                 $previewtext = wfMsg('userjspreview');
1399                         }
1400                         $parserOptions->setTidy(true);
1401                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1402                         $wgOut->addHTML( $parserOutput->mText );
1403                         wfProfileOut( $fname );
1404                         return $previewhead;
1405                 } else {
1406                         $toparse = $this->textbox1;
1407
1408                         # If we're adding a comment, we need to show the
1409                         # summary as the headline
1410                         if($this->section=="new" && $this->summary!="") {
1411                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1412                         }
1413
1414                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1415                         $parserOptions->setTidy(true);
1416                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1417                                         $wgTitle, $parserOptions );
1418
1419                         $previewHTML = $parserOutput->getText();
1420                         $wgOut->addParserOutputNoText( $parserOutput );
1421
1422                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1423                                 foreach ( array_keys( $template ) as $dbk)
1424                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1425
1426                         wfProfileOut( $fname );
1427                         return $previewhead . $previewHTML;
1428                 }
1429         }
1430
1431         /**
1432          * Call the stock "user is blocked" page
1433          */
1434         function blockedPage() {
1435                 global $wgOut, $wgUser;
1436                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1437
1438                 # If the user made changes, preserve them when showing the markup
1439                 # (This happens when a user is blocked during edit, for instance)
1440                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1441                 if( $first ) {
1442                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1443                 } else {
1444                         $source = $this->textbox1;
1445                 }
1446
1447                 # Spit out the source or the user's modified version
1448                 if( $source !== false ) {
1449                         $rows = $wgUser->getOption( 'rows' );
1450                         $cols = $wgUser->getOption( 'cols' );
1451                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1452                         $wgOut->addHtml( '<hr />' );
1453                         $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
1454                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1455                 }
1456         }
1457
1458         /**
1459          * Produce the stock "please login to edit pages" page
1460          */
1461         function userNotLoggedInPage() {
1462                 global $wgUser, $wgOut;
1463                 $skin = $wgUser->getSkin();
1464
1465                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1466                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1467
1468                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1469                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1470                 $wgOut->setArticleRelated( false );
1471
1472                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1473                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1474         }
1475
1476         /**
1477          * Creates a basic error page which informs the user that
1478          * they have to validate their email address before being
1479          * allowed to edit.
1480          */
1481         function userNotConfirmedPage() {
1482                 global $wgOut;
1483
1484                 $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
1485                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1486                 $wgOut->setArticleRelated( false );
1487
1488                 $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
1489                 $wgOut->returnToMain( false );
1490         }
1491
1492         /**
1493          * Creates a basic error page which informs the user that
1494          * they have attempted to edit a nonexistant section.
1495          */
1496         function noSuchSectionPage() {
1497                 global $wgOut;
1498
1499                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1500                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1501                 $wgOut->setArticleRelated( false );
1502
1503                 $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
1504                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1505         }
1506
1507         /**
1508          * Produce the stock "your edit contains spam" page
1509          *
1510          * @param $match Text which triggered one or more filters
1511          */
1512         function spamPage( $match = false ) {
1513                 global $wgOut;
1514
1515                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1516                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1517                 $wgOut->setArticleRelated( false );
1518
1519                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1520                 if ( $match )
1521                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1522
1523                 $wgOut->returnToMain( false );
1524         }
1525
1526         /**
1527          * @private
1528          * @todo document
1529          */
1530         function mergeChangesInto( &$editText ){
1531                 $fname = 'EditPage::mergeChangesInto';
1532                 wfProfileIn( $fname );
1533
1534                 $db = wfGetDB( DB_MASTER );
1535
1536                 // This is the revision the editor started from
1537                 $baseRevision = Revision::loadFromTimestamp(
1538                         $db, $this->mArticle->mTitle, $this->edittime );
1539                 if( is_null( $baseRevision ) ) {
1540                         wfProfileOut( $fname );
1541                         return false;
1542                 }
1543                 $baseText = $baseRevision->getText();
1544
1545                 // The current state, we want to merge updates into it
1546                 $currentRevision =  Revision::loadFromTitle(
1547                         $db, $this->mArticle->mTitle );
1548                 if( is_null( $currentRevision ) ) {
1549                         wfProfileOut( $fname );
1550                         return false;
1551                 }
1552                 $currentText = $currentRevision->getText();
1553
1554                 $result = '';
1555                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1556                         $editText = $result;
1557                         wfProfileOut( $fname );
1558                         return true;
1559                 } else {
1560                         wfProfileOut( $fname );
1561                         return false;
1562                 }
1563         }
1564
1565         /**
1566          * Check if the browser is on a blacklist of user-agents known to
1567          * mangle UTF-8 data on form submission. Returns true if Unicode
1568          * should make it through, false if it's known to be a problem.
1569          * @return bool
1570          * @private
1571          */
1572         function checkUnicodeCompliantBrowser() {
1573                 global $wgBrowserBlackList;
1574                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1575                         // No User-Agent header sent? Trust it by default...
1576                         return true;
1577                 }
1578                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1579                 foreach ( $wgBrowserBlackList as $browser ) {
1580                         if ( preg_match($browser, $currentbrowser) ) {
1581                                 return false;
1582                         }
1583                 }
1584                 return true;
1585         }
1586
1587         /**
1588          * Format an anchor fragment as it would appear for a given section name
1589          * @param string $text
1590          * @return string
1591          * @private
1592          */
1593         function sectionAnchor( $text ) {
1594                 $headline = Sanitizer::decodeCharReferences( $text );
1595                 # strip out HTML
1596                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
1597                 $headline = trim( $headline );
1598                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
1599                 $replacearray = array(
1600                         '%3A' => ':',
1601                         '%' => '.'
1602                 );
1603                 return str_replace(
1604                         array_keys( $replacearray ),
1605                         array_values( $replacearray ),
1606                         $sectionanchor );
1607         }
1608
1609         /**
1610          * Shows a bulletin board style toolbar for common editing functions.
1611          * It can be disabled in the user preferences.
1612          * The necessary JavaScript code can be found in style/wikibits.js.
1613          */
1614         function getEditToolbar() {
1615                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1616
1617                 /**
1618                  * toolarray an array of arrays which each include the filename of
1619                  * the button image (without path), the opening tag, the closing tag,
1620                  * and optionally a sample text that is inserted between the two when no
1621                  * selection is highlighted.
1622                  * The tip text is shown when the user moves the mouse over the button.
1623                  *
1624                  * Already here are accesskeys (key), which are not used yet until someone
1625                  * can figure out a way to make them work in IE. However, we should make
1626                  * sure these keys are not defined on the edit page.
1627                  */
1628                 $toolarray = array(
1629                         array(  'image' => 'button_bold.png',
1630                                 'id'    => 'mw-editbutton-bold',
1631                                 'open'  => '\\\'\\\'\\\'',
1632                                 'close' => '\\\'\\\'\\\'',
1633                                 'sample'=> wfMsg('bold_sample'),
1634                                 'tip'   => wfMsg('bold_tip'),
1635                                 'key'   => 'B'
1636                         ),
1637                         array(  'image' => 'button_italic.png',
1638                                 'id'    => 'mw-editbutton-italic',
1639                                 'open'  => '\\\'\\\'',
1640                                 'close' => '\\\'\\\'',
1641                                 'sample'=> wfMsg('italic_sample'),
1642                                 'tip'   => wfMsg('italic_tip'),
1643                                 'key'   => 'I'
1644                         ),
1645                         array(  'image' => 'button_link.png',
1646                                 'id'    => 'mw-editbutton-link',
1647                                 'open'  => '[[',
1648                                 'close' => ']]',
1649                                 'sample'=> wfMsg('link_sample'),
1650                                 'tip'   => wfMsg('link_tip'),
1651                                 'key'   => 'L'
1652                         ),
1653                         array(  'image' => 'button_extlink.png',
1654                                 'id'    => 'mw-editbutton-extlink',
1655                                 'open'  => '[',
1656                                 'close' => ']',
1657                                 'sample'=> wfMsg('extlink_sample'),
1658                                 'tip'   => wfMsg('extlink_tip'),
1659                                 'key'   => 'X'
1660                         ),
1661                         array(  'image' => 'button_headline.png',
1662                                 'id'    => 'mw-editbutton-headline',
1663                                 'open'  => "\\n== ",
1664                                 'close' => " ==\\n",
1665                                 'sample'=> wfMsg('headline_sample'),
1666                                 'tip'   => wfMsg('headline_tip'),
1667                                 'key'   => 'H'
1668                         ),
1669                         array(  'image' => 'button_image.png',
1670                                 'id'    => 'mw-editbutton-image',
1671                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1672                                 'close' => ']]',
1673                                 'sample'=> wfMsg('image_sample'),
1674                                 'tip'   => wfMsg('image_tip'),
1675                                 'key'   => 'D'
1676                         ),
1677                         array(  'image' => 'button_media.png',
1678                                 'id'    => 'mw-editbutton-media',
1679                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1680                                 'close' => ']]',
1681                                 'sample'=> wfMsg('media_sample'),
1682                                 'tip'   => wfMsg('media_tip'),
1683                                 'key'   => 'M'
1684                         ),
1685                         array(  'image' => 'button_math.png',
1686                                 'id'    => 'mw-editbutton-math',
1687                                 'open'  => "<math>",
1688                                 'close' => "<\\/math>",
1689                                 'sample'=> wfMsg('math_sample'),
1690                                 'tip'   => wfMsg('math_tip'),
1691                                 'key'   => 'C'
1692                         ),
1693                         array(  'image' => 'button_nowiki.png',
1694                                 'id'    => 'mw-editbutton-nowiki',
1695                                 'open'  => "<nowiki>",
1696                                 'close' => "<\\/nowiki>",
1697                                 'sample'=> wfMsg('nowiki_sample'),
1698                                 'tip'   => wfMsg('nowiki_tip'),
1699                                 'key'   => 'N'
1700                         ),
1701                         array(  'image' => 'button_sig.png',
1702                                 'id'    => 'mw-editbutton-signature',
1703                                 'open'  => '--~~~~',
1704                                 'close' => '',
1705                                 'sample'=> '',
1706                                 'tip'   => wfMsg('sig_tip'),
1707                                 'key'   => 'Y'
1708                         ),
1709                         array(  'image' => 'button_hr.png',
1710                                 'id'    => 'mw-editbutton-hr',
1711                                 'open'  => "\\n----\\n",
1712                                 'close' => '',
1713                                 'sample'=> '',
1714                                 'tip'   => wfMsg('hr_tip'),
1715                                 'key'   => 'R'
1716                         )
1717                 );
1718                 $toolbar = "<div id='toolbar'>\n";
1719                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1720
1721                 foreach($toolarray as $tool) {
1722
1723                         $cssId = $tool['id'];
1724                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1725                         $open=$tool['open'];
1726                         $close=$tool['close'];
1727                         $sample = wfEscapeJsString( $tool['sample'] );
1728
1729                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1730                         // Older browsers show a "speedtip" type message only for ALT.
1731                         // Ideally these should be different, realistically they
1732                         // probably don't need to be.
1733                         $tip = wfEscapeJsString( $tool['tip'] );
1734
1735                         #$key = $tool["key"];
1736
1737                         $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
1738                 }
1739
1740                 $toolbar.="/*]]>*/\n</script>";
1741                 $toolbar.="\n</div>";
1742                 return $toolbar;
1743         }
1744
1745         /**
1746          * Returns an array of html code of the following checkboxes:
1747          * minor and watch
1748          *
1749          * @param $tabindex Current tabindex
1750          * @param $skin Skin object
1751          * @param $checked Array of checkbox => bool, where bool indicates the checked
1752          *                 status of the checkbox
1753          *
1754          * @return array
1755          */
1756         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1757                 global $wgUser;
1758
1759                 $checkboxes = array();
1760
1761                 $checkboxes['minor'] = '';
1762                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1763                 if ( $wgUser->isAllowed('minoredit') ) {
1764                         $attribs = array(
1765                                 'tabindex'  => ++$tabindex,
1766                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1767                                 'id'        => 'wpMinoredit',
1768                         );
1769                         $checkboxes['minor'] =
1770                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1771                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1772                 }
1773
1774                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1775                 $checkboxes['watch'] = '';
1776                 if ( $wgUser->isLoggedIn() ) {
1777                         $attribs = array(
1778                                 'tabindex'  => ++$tabindex,
1779                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1780                                 'id'        => 'wpWatchthis',
1781                         );
1782                         $checkboxes['watch'] =
1783                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1784                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1785                 }
1786                 return $checkboxes;
1787         }
1788
1789         /**
1790          * Returns an array of html code of the following buttons:
1791          * save, diff, preview and live
1792          *
1793          * @param $tabindex Current tabindex
1794          *
1795          * @return array
1796          */
1797         public function getEditButtons(&$tabindex) {
1798                 global $wgLivePreview, $wgUser;
1799
1800                 $buttons = array();
1801
1802                 $temp = array(
1803                         'id'        => 'wpSave',
1804                         'name'      => 'wpSave',
1805                         'type'      => 'submit',
1806                         'tabindex'  => ++$tabindex,
1807                         'value'     => wfMsg('savearticle'),
1808                         'accesskey' => wfMsg('accesskey-save'),
1809                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1810                 );
1811                 $buttons['save'] = wfElement('input', $temp, '');
1812
1813                 ++$tabindex; // use the same for preview and live preview
1814                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1815                         $temp = array(
1816                                 'id'        => 'wpPreview',
1817                                 'name'      => 'wpPreview',
1818                                 'type'      => 'submit',
1819                                 'tabindex'  => $tabindex,
1820                                 'value'     => wfMsg('showpreview'),
1821                                 'accesskey' => '',
1822                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1823                                 'style'     => 'display: none;',
1824                         );
1825                         $buttons['preview'] = wfElement('input', $temp, '');
1826
1827                         $temp = array(
1828                                 'id'        => 'wpLivePreview',
1829                                 'name'      => 'wpLivePreview',
1830                                 'type'      => 'submit',
1831                                 'tabindex'  => $tabindex,
1832                                 'value'     => wfMsg('showlivepreview'),
1833                                 'accesskey' => wfMsg('accesskey-preview'),
1834                                 'title'     => '',
1835                                 'onclick'   => $this->doLivePreviewScript(),
1836                         );
1837                         $buttons['live'] = wfElement('input', $temp, '');
1838                 } else {
1839                         $temp = array(
1840                                 'id'        => 'wpPreview',
1841                                 'name'      => 'wpPreview',
1842                                 'type'      => 'submit',
1843                                 'tabindex'  => $tabindex,
1844                                 'value'     => wfMsg('showpreview'),
1845                                 'accesskey' => wfMsg('accesskey-preview'),
1846                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1847                         );
1848                         $buttons['preview'] = wfElement('input', $temp, '');
1849                         $buttons['live'] = '';
1850                 }
1851
1852                 $temp = array(
1853                         'id'        => 'wpDiff',
1854                         'name'      => 'wpDiff',
1855                         'type'      => 'submit',
1856                         'tabindex'  => ++$tabindex,
1857                         'value'     => wfMsg('showdiff'),
1858                         'accesskey' => wfMsg('accesskey-diff'),
1859                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1860                 );
1861                 $buttons['diff'] = wfElement('input', $temp, '');
1862
1863                 return $buttons;
1864         }
1865
1866         /**
1867          * Output preview text only. This can be sucked into the edit page
1868          * via JavaScript, and saves the server time rendering the skin as
1869          * well as theoretically being more robust on the client (doesn't
1870          * disturb the edit box's undo history, won't eat your text on
1871          * failure, etc).
1872          *
1873          * @todo This doesn't include category or interlanguage links.
1874          *       Would need to enhance it a bit, <s>maybe wrap them in XML
1875          *       or something...</s> that might also require more skin
1876          *       initialization, so check whether that's a problem.
1877          */
1878         function livePreview() {
1879                 global $wgOut;
1880                 $wgOut->disable();
1881                 header( 'Content-type: text/xml; charset=utf-8' );
1882                 header( 'Cache-control: no-cache' );
1883
1884                 $s =
1885                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
1886                 Xml::openElement( 'livepreview' ) .
1887                 Xml::element( 'preview', null, $this->getPreviewText() ) .
1888                 Xml::element( 'br', array( 'style' => 'clear: both;' ) ) .
1889                 Xml::closeElement( 'livepreview' );
1890                 echo $s;
1891         }
1892
1893
1894         /**
1895          * Get a diff between the current contents of the edit box and the
1896          * version of the page we're editing from.
1897          *
1898          * If this is a section edit, we'll replace the section as for final
1899          * save and then make a comparison.
1900          *
1901          * @return string HTML
1902          */
1903         function getDiff() {
1904                 $oldtext = $this->mArticle->fetchContent();
1905                 $newtext = $this->mArticle->replaceSection(
1906                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1907                 $newtext = $this->mArticle->preSaveTransform( $newtext );
1908                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
1909                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
1910                 if ( $oldtext !== false  || $newtext != '' ) {
1911                         $de = new DifferenceEngine( $this->mTitle );
1912                         $de->setText( $oldtext, $newtext );
1913                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1914                 } else {
1915                         $difftext = '';
1916                 }
1917
1918                 return '<div id="wikiDiff">' . $difftext . '</div>';
1919         }
1920
1921         /**
1922          * Filter an input field through a Unicode de-armoring process if it
1923          * came from an old browser with known broken Unicode editing issues.
1924          *
1925          * @param WebRequest $request
1926          * @param string $field
1927          * @return string
1928          * @private
1929          */
1930         function safeUnicodeInput( $request, $field ) {
1931                 $text = rtrim( $request->getText( $field ) );
1932                 return $request->getBool( 'safemode' )
1933                         ? $this->unmakesafe( $text )
1934                         : $text;
1935         }
1936
1937         /**
1938          * Filter an output field through a Unicode armoring process if it is
1939          * going to an old browser with known broken Unicode editing issues.
1940          *
1941          * @param string $text
1942          * @return string
1943          * @private
1944          */
1945         function safeUnicodeOutput( $text ) {
1946                 global $wgContLang;
1947                 $codedText = $wgContLang->recodeForEdit( $text );
1948                 return $this->checkUnicodeCompliantBrowser()
1949                         ? $codedText
1950                         : $this->makesafe( $codedText );
1951         }
1952
1953         /**
1954          * A number of web browsers are known to corrupt non-ASCII characters
1955          * in a UTF-8 text editing environment. To protect against this,
1956          * detected browsers will be served an armored version of the text,
1957          * with non-ASCII chars converted to numeric HTML character references.
1958          *
1959          * Preexisting such character references will have a 0 added to them
1960          * to ensure that round-trips do not alter the original data.
1961          *
1962          * @param string $invalue
1963          * @return string
1964          * @private
1965          */
1966         function makesafe( $invalue ) {
1967                 // Armor existing references for reversability.
1968                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1969
1970                 $bytesleft = 0;
1971                 $result = "";
1972                 $working = 0;
1973                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1974                         $bytevalue = ord( $invalue{$i} );
1975                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1976                                 $result .= chr( $bytevalue );
1977                                 $bytesleft = 0;
1978                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
1979                                 $working = $working << 6;
1980                                 $working += ($bytevalue & 0x3F);
1981                                 $bytesleft--;
1982                                 if( $bytesleft <= 0 ) {
1983                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
1984                                 }
1985                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
1986                                 $working = $bytevalue & 0x1F;
1987                                 $bytesleft = 1;
1988                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
1989                                 $working = $bytevalue & 0x0F;
1990                                 $bytesleft = 2;
1991                         } else { //1111 0xxx
1992                                 $working = $bytevalue & 0x07;
1993                                 $bytesleft = 3;
1994                         }
1995                 }
1996                 return $result;
1997         }
1998
1999         /**
2000          * Reverse the previously applied transliteration of non-ASCII characters
2001          * back to UTF-8. Used to protect data from corruption by broken web browsers
2002          * as listed in $wgBrowserBlackList.
2003          *
2004          * @param string $invalue
2005          * @return string
2006          * @private
2007          */
2008         function unmakesafe( $invalue ) {
2009                 $result = "";
2010                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2011                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2012                                 $i += 3;
2013                                 $hexstring = "";
2014                                 do {
2015                                         $hexstring .= $invalue{$i};
2016                                         $i++;
2017                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2018
2019                                 // Do some sanity checks. These aren't needed for reversability,
2020                                 // but should help keep the breakage down if the editor
2021                                 // breaks one of the entities whilst editing.
2022                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2023                                         $codepoint = hexdec($hexstring);
2024                                         $result .= codepointToUtf8( $codepoint );
2025                                 } else {
2026                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2027                                 }
2028                         } else {
2029                                 $result .= substr( $invalue, $i, 1 );
2030                         }
2031                 }
2032                 // reverse the transform that we made for reversability reasons.
2033                 return strtr( $result, array( "&#x0" => "&#x" ) );
2034         }
2035
2036         function noCreatePermission() {
2037                 global $wgOut;
2038                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2039                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
2040         }
2041
2042         /**
2043          * If there are rows in the deletion log for this page, show them,
2044          * along with a nice little note for the user
2045          *
2046          * @param OutputPage $out
2047          */
2048         private function showDeletionLog( $out ) {
2049                 $title = $this->mArticle->getTitle();
2050                 $reader = new LogReader(
2051                         new FauxRequest(
2052                                 array(
2053                                         'page' => $title->getPrefixedText(),
2054                                         'type' => 'delete',
2055                                         )
2056                         )
2057                 );
2058                 if( $reader->hasRows() ) {
2059                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2060                         $out->addHtml( $this->buildWarningDismisser() );
2061                         $out->addWikiText( wfMsg( 'recreate-deleted-warn' ) );
2062                         $viewer = new LogViewer( $reader );
2063                         $viewer->showList( $out );
2064                         $out->addHtml( '</div>' );
2065                 }
2066         }
2067
2068         /**
2069          * Builds a JavaScript fragment that injects a link to dismiss the
2070          * "recreating deleted" warning
2071          *
2072          * @return string
2073          */
2074         private function buildWarningDismisser() {
2075                 return '<script type="text/javascript">'
2076                         . 'document.write( \'<div class="mw-recreate-deleted-control">'
2077                         . '<a href="javascript:dismissRecreateWarning();">'
2078                         . wfMsgHtml( 'recreate-deleted-dismiss' ) . '</a></div>\' );'
2079                         . '</script>';
2080         }
2081
2082 }
2083
2084 ?>