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 $mTokenOkExceptSuffix = false;
  24         var $mTriedSave = false;
  25         var $tooBig = false;
  26         var $kblength = false;
  27         var $missingComment = false;
  28         var $missingSummary = false;
  29         var $allowBlankSummary = false;
  30         var $autoSumm = '';
  31         var $hookError = '';
  32         var $mPreviewTemplates;
  33
  34         # Form values
  35         var $save = false, $preview = false, $diff = false;
  36         var $minoredit = false, $watchthis = false, $recreate = false;
  37         var $textbox1 = '', $textbox2 = '', $summary = '';
  38         var $edittime = '', $section = '', $starttime = '';
  39         var $oldid = 0, $editintro = '', $scrolltop = null;
  40
  41         # Placeholders for text injection by hooks (must be HTML)
  42         # extensions should take care to _append_ to the present value
  43         public $editFormPageTop; // Before even the preview
  44         public $editFormTextTop;
  45         public $editFormTextAfterWarn;
  46         public $editFormTextAfterTools;
  47         public $editFormTextBottom;
  48
  49         /**
  50          * @todo document
  51          * @param $article
  52          */
  53         function EditPage( $article ) {
  54                 $this->mArticle =& $article;
  55                 global $wgTitle;
  56                 $this->mTitle =& $wgTitle;
  57
  58                 # Placeholders for text injection by hooks (empty per default)
  59                 $this->editFormPageTop =
  60                 $this->editFormTextTop =
  61                 $this->editFormTextAfterWarn =
  62                 $this->editFormTextAfterTools =
  63                 $this->editFormTextBottom = "";
  64         }
  65
  66         /**
  67          * Fetch initial editing page content.
  68          */
  69         private function getContent( $def_text = '' ) {
  70                 global $wgOut, $wgRequest, $wgParser;
  71
  72                 # Get variables from query string :P
  73                 $section = $wgRequest->getVal( 'section' );
  74                 $preload = $wgRequest->getVal( 'preload' );
  75                 $undoafter = $wgRequest->getVal( 'undoafter' );
  76                 $undo = $wgRequest->getVal( 'undo' );
  77
  78                 wfProfileIn( __METHOD__ );
  79
  80                 $text = '';
  81                 if( !$this->mTitle->exists() ) {
  82                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
  83                                 # If this is a system message, get the default text.
  84                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
  85                         } else {
  86                                 # If requested, preload some text.
  87                                 $text = $this->getPreloadedText( $preload );
  88                         }
  89                         # We used to put MediaWiki:Newarticletext here if
  90                         # $text was empty at this point.
  91                         # This is now shown above the edit box instead.
  92                 } else {
  93                         // FIXME: may be better to use Revision class directly
  94                         // But don't mess with it just yet. Article knows how to
  95                         // fetch the page record from the high-priority server,
  96                         // which is needed to guarantee we don't pick up lagged
  97                         // information.
  98
  99                         $text = $this->mArticle->getContent();
 100
 101                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 102                                 # If they got undoafter and undo round the wrong way, switch them
 103                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 104                         }
 105
 106                         if ( $undo > 0 && $undo > $undoafter ) {
 107                                 # Undoing a specific edit overrides section editing; section-editing
 108                                 # doesn't work with undoing.
 109                                 if ( $undoafter ) {
 110                                         $undorev = Revision::newFromId($undo);
 111                                         $oldrev = Revision::newFromId($undoafter);
 112                                 } else {
 113                                         $undorev = Revision::newFromId($undo);
 114                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 115                                 }
 116
 117                                 #Sanity check, make sure it's the right page.
 118                                 # Otherwise, $text will be left as-is.
 119                                 if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
 120                                         $undorev_text = $undorev->getText();
 121                                         $oldrev_text = $oldrev->getText();
 122                                         $currev_text = $text;
 123
 124                                         #No use doing a merge if it's just a straight revert.
 125                                         if ( $currev_text != $undorev_text ) {
 126                                                 $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
 127                                         } else {
 128                                                 $text = $oldrev_text;
 129                                                 $result = true;
 130                                         }
 131                                 } else {
 132                                         // Failed basic sanity checks.
 133                                         // Older revisions may have been removed since the link
 134                                         // was created, or we may simply have got bogus input.
 135                                         $result = false;
 136                                 }
 137
 138                                 if( $result ) {
 139                                         # Inform the user of our success and set an automatic edit summary
 140                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 141                                         $firstrev = $oldrev->getNext();
 142                                         # If we just undid one rev, use an autosummary
 143                                         if ( $firstrev->mId == $undo ) {
 144                                                 $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 145                                         }
 146                                         $this->formtype = 'diff';
 147                                 } else {
 148                                         # Warn the user that something went wrong
 149                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 150                                 }
 151                         } else if( $section != '' ) {
 152                                 if( $section == 'new' ) {
 153                                         $text = $this->getPreloadedText( $preload );
 154                                 } else {
 155                                         $text = $wgParser->getSection( $text, $section, $def_text );
 156                                 }
 157                         }
 158                 }
 159
 160                 wfProfileOut( __METHOD__ );
 161                 return $text;
 162         }
 163
 164         /**
 165          * Get the contents of a page from its title and remove includeonly tags
 166          *
 167          * @param $preload String: the title of the page.
 168          * @return string The contents of the page.
 169          */
 170         private function getPreloadedText($preload) {
 171                 if ( $preload === '' )
 172                         return '';
 173                 else {
 174                         $preloadTitle = Title::newFromText( $preload );
 175                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 176                                 $rev=Revision::newFromTitle($preloadTitle);
 177                                 if ( is_object( $rev ) ) {
 178                                         $text = $rev->getText();
 179                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 180                                         // its own mini-parser! -ævar
 181                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 182                                         return $text;
 183                                 } else
 184                                         return '';
 185                         }
 186                 }
 187         }
 188
 189         /**
 190          * This is the function that extracts metadata from the article body on the first view.
 191          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 192          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 193          */
 194         function extractMetaDataFromArticle () {
 195                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 196                 $this->mMetaData = '' ;
 197                 if ( !$wgUseMetadataEdit ) return ;
 198                 if ( $wgMetadataWhitelist == '' ) return ;
 199                 $s = '' ;
 200                 $t = $this->getContent();
 201
 202                 # MISSING : <nowiki> filtering
 203
 204                 # Categories and language links
 205                 $t = explode ( "\n" , $t ) ;
 206                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 207                 $cat = $ll = array() ;
 208                 foreach ( $t AS $key => $x )
 209                 {
 210                         $y = trim ( strtolower ( $x ) ) ;
 211                         while ( substr ( $y , 0 , 2 ) == '[[' )
 212                         {
 213                                 $y = explode ( ']]' , trim ( $x ) ) ;
 214                                 $first = array_shift ( $y ) ;
 215                                 $first = explode ( ':' , $first ) ;
 216                                 $ns = array_shift ( $first ) ;
 217                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 218                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 219                                 {
 220                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 221                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 222                                         else $ll[] = $add ;
 223                                         $x = implode ( ']]' , $y ) ;
 224                                         $t[$key] = $x ;
 225                                         $y = trim ( strtolower ( $x ) ) ;
 226                                 }
 227                         }
 228                 }
 229                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 230                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 231                 $t = implode ( "\n" , $t ) ;
 232
 233                 # Load whitelist
 234                 $sat = array () ; # stand-alone-templates; must be lowercase
 235                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 236                 $wl_article = new Article ( $wl_title ) ;
 237                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 238                 foreach ( $wl AS $x )
 239                 {
 240                         $isentry = false ;
 241                         $x = trim ( $x ) ;
 242                         while ( substr ( $x , 0 , 1 ) == '*' )
 243                         {
 244                                 $isentry = true ;
 245                                 $x = trim ( substr ( $x , 1 ) ) ;
 246                         }
 247                         if ( $isentry )
 248                         {
 249                                 $sat[] = strtolower ( $x ) ;
 250                         }
 251
 252                 }
 253
 254                 # Templates, but only some
 255                 $t = explode ( '{{' , $t ) ;
 256                 $tl = array () ;
 257                 foreach ( $t AS $key => $x )
 258                 {
 259                         $y = explode ( '}}' , $x , 2 ) ;
 260                         if ( count ( $y ) == 2 )
 261                         {
 262                                 $z = $y[0] ;
 263                                 $z = explode ( '|' , $z ) ;
 264                                 $tn = array_shift ( $z ) ;
 265                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 266                                 {
 267                                         $tl[] = '{{' . $y[0] . '}}' ;
 268                                         $t[$key] = $y[1] ;
 269                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 270                                 }
 271                                 else $t[$key] = '{{' . $x ;
 272                         }
 273                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 274                         else $t[$key] = $x ;
 275                 }
 276                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 277                 $t = implode ( '' , $t ) ;
 278
 279                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 280                 $this->mArticle->mContent = $t ;
 281                 $this->mMetaData = $s ;
 282         }
 283
 284         function submit() {
 285                 $this->edit();
 286         }
 287
 288         /**
 289          * This is the function that gets called for "action=edit". It
 290          * sets up various member variables, then passes execution to
 291          * another function, usually showEditForm()
 292          *
 293          * The edit form is self-submitting, so that when things like
 294          * preview and edit conflicts occur, we get the same form back
 295          * with the extra stuff added.  Only when the final submission
 296          * is made and all is well do we actually save and redirect to
 297          * the newly-edited page.
 298          */
 299         function edit() {
 300                 global $wgOut, $wgUser, $wgRequest, $wgTitle;
 301
 302                 if ( ! wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 303                         return;
 304
 305                 $fname = 'EditPage::edit';
 306                 wfProfileIn( $fname );
 307                 wfDebug( "$fname: enter\n" );
 308
 309                 // this is not an article
 310                 $wgOut->setArticleFlag(false);
 311
 312                 $this->importFormData( $wgRequest );
 313                 $this->firsttime = false;
 314
 315                 if( $this->live ) {
 316                         $this->livePreview();
 317                         wfProfileOut( $fname );
 318                         return;
 319                 }
 320
 321                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser);
 322
 323                 # Ignore some permissions errors.
 324                 $remove = array();
 325                 foreach( $permErrors as $error ) {
 326                         if ($this->preview || $this->diff &&
 327                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 328                         {
 329                                 // Don't worry about blocks when previewing/diffing
 330                                 $remove[] = $error;
 331                         }
 332
 333                         if ($error[0] == 'readonlytext')
 334                         {
 335                                 if ($this->edit) {
 336                                         $this->formtype = 'preview';
 337                                 } elseif ($this->save || $this->preview || $this->diff) {
 338                                         $remove[] = $error;
 339                                 }
 340                         }
 341                 }
 342                 # array_diff returns elements in $permErrors that are not in $remove.
 343                 $permErrors = array_diff( $permErrors, $remove );
 344
 345                 if ($permErrors != array())
 346                 {
 347                         wfDebug( "$fname: User can't edit\n" );
 348                         $wgOut->readOnlyPage( $this->getContent(), true, $permErrors );
 349                         wfProfileOut( $fname );
 350                         return;
 351                 } else {
 352                         if ( $this->save ) {
 353                                 $this->formtype = 'save';
 354                         } else if ( $this->preview ) {
 355                                 $this->formtype = 'preview';
 356                         } else if ( $this->diff ) {
 357                                 $this->formtype = 'diff';
 358                         } else { # First time through
 359                                 $this->firsttime = true;
 360                                 if( $this->previewOnOpen() ) {
 361                                         $this->formtype = 'preview';
 362                                 } else {
 363                                         $this->extractMetaDataFromArticle () ;
 364                                         $this->formtype = 'initial';
 365                                 }
 366                         }
 367                 }
 368
 369                 wfProfileIn( "$fname-business-end" );
 370
 371                 $this->isConflict = false;
 372                 // css / js subpages of user pages get a special treatment
 373                 $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
 374                 $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
 375
 376                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 377                  * no matter it's current state
 378                  */
 379                 $this->deletedSinceEdit = false;
 380                 if ( $this->edittime != '' ) {
 381                         /* Note that we rely on logging table, which hasn't been always there,
 382                          * but that doesn't matter, because this only applies to brand new
 383                          * deletes. This is done on every preview and save request. Move it further down
 384                          * to only perform it on saves
 385                          */
 386                         if ( $this->mTitle->isDeleted() ) {
 387                                 $this->lastDelete = $this->getLastDelete();
 388                                 if ( !is_null($this->lastDelete) ) {
 389                                         $deletetime = $this->lastDelete->log_timestamp;
 390                                         if ( ($deletetime - $this->starttime) > 0 ) {
 391                                                 $this->deletedSinceEdit = true;
 392                                         }
 393                                 }
 394                         }
 395                 }
 396
 397                 # Show applicable editing introductions
 398                 if( $this->formtype == 'initial' || $this->firsttime )
 399                         $this->showIntro();
 400
 401                 if( $this->mTitle->isTalkPage() ) {
 402                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 403                 }
 404
 405                 # Attempt submission here.  This will check for edit conflicts,
 406                 # and redundantly check for locked database, blocked IPs, etc.
 407                 # that edit() already checked just in case someone tries to sneak
 408                 # in the back door with a hand-edited submission URL.
 409
 410                 if ( 'save' == $this->formtype ) {
 411                         if ( !$this->attemptSave() ) {
 412                                 wfProfileOut( "$fname-business-end" );
 413                                 wfProfileOut( $fname );
 414                                 return;
 415                         }
 416                 }
 417
 418                 # First time through: get contents, set time for conflict
 419                 # checking, etc.
 420                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 421                         if ($this->initialiseForm() === false) {
 422                                 $this->noSuchSectionPage();
 423                                 wfProfileOut( "$fname-business-end" );
 424                                 wfProfileOut( $fname );
 425                                 return;
 426                         }
 427                         if( !$this->mTitle->getArticleId() )
 428                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 429                 }
 430
 431                 $this->showEditForm();
 432                 wfProfileOut( "$fname-business-end" );
 433                 wfProfileOut( $fname );
 434         }
 435
 436         /**
 437          * Should we show a preview when the edit form is first shown?
 438          *
 439          * @return bool
 440          */
 441         private function previewOnOpen() {
 442                 global $wgRequest, $wgUser;
 443                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 444                         // Explicit override from request
 445                         return true;
 446                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 447                         // Explicit override from request
 448                         return false;
 449                 } elseif( $this->section == 'new' ) {
 450                         // Nothing *to* preview for new sections
 451                         return false;
 452                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 453                         // Standard preference behaviour
 454                         return true;
 455                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 456                         // Categories are special
 457                         return true;
 458                 } else {
 459                         return false;
 460                 }
 461         }
 462
 463         /**
 464          * @todo document
 465          * @param $request
 466          */
 467         function importFormData( &$request ) {
 468                 global $wgLang, $wgUser;
 469                 $fname = 'EditPage::importFormData';
 470                 wfProfileIn( $fname );
 471
 472                 if( $request->wasPosted() ) {
 473                         # These fields need to be checked for encoding.
 474                         # Also remove trailing whitespace, but don't remove _initial_
 475                         # whitespace from the text boxes. This may be significant formatting.
 476                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 477                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 478                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 479                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 480                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 481
 482                         $this->edittime = $request->getVal( 'wpEdittime' );
 483                         $this->starttime = $request->getVal( 'wpStarttime' );
 484
 485                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 486
 487                         if( is_null( $this->edittime ) ) {
 488                                 # If the form is incomplete, force to preview.
 489                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 490                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 491                                 $this->preview  = true;
 492                         } else {
 493                                 /* Fallback for live preview */
 494                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 495                                 $this->diff = $request->getCheck( 'wpDiff' );
 496
 497                                 // Remember whether a save was requested, so we can indicate
 498                                 // if we forced preview due to session failure.
 499                                 $this->mTriedSave = !$this->preview;
 500
 501                                 if ( $this->tokenOk( $request ) ) {
 502                                         # Some browsers will not report any submit button
 503                                         # if the user hits enter in the comment box.
 504                                         # The unmarked state will be assumed to be a save,
 505                                         # if the form seems otherwise complete.
 506                                         wfDebug( "$fname: Passed token check.\n" );
 507                                 } else if ( $this->diff ) {
 508                                         # Failed token check, but only requested "Show Changes".
 509                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 510                                 } else {
 511                                         # Page might be a hack attempt posted from
 512                                         # an external site. Preview instead of saving.
 513                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 514                                         $this->preview = true;
 515                                 }
 516                         }
 517                         $this->save    = ! ( $this->preview OR $this->diff );
 518                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 519                                 $this->edittime = null;
 520                         }
 521
 522                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 523                                 $this->starttime = null;
 524                         }
 525
 526                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 527
 528                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 529                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 530
 531                         # Don't force edit summaries when a user is editing their own user or talk page
 532                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 533                                 $this->allowBlankSummary = true;
 534                         } else {
 535                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 536                         }
 537
 538                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 539                 } else {
 540                         # Not a posted form? Start with nothing.
 541                         wfDebug( "$fname: Not a posted form.\n" );
 542                         $this->textbox1  = '';
 543                         $this->textbox2  = '';
 544                         $this->mMetaData = '';
 545                         $this->summary   = '';
 546                         $this->edittime  = '';
 547                         $this->starttime = wfTimestampNow();
 548                         $this->edit      = false;
 549                         $this->preview   = false;
 550                         $this->save      = false;
 551                         $this->diff      = false;
 552                         $this->minoredit = false;
 553                         $this->watchthis = false;
 554                         $this->recreate  = false;
 555                 }
 556
 557                 $this->oldid = $request->getInt( 'oldid' );
 558
 559                 # Section edit can come from either the form or a link
 560                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 561
 562                 $this->live = $request->getCheck( 'live' );
 563                 $this->editintro = $request->getText( 'editintro' );
 564
 565                 wfProfileOut( $fname );
 566         }
 567
 568         /**
 569          * Make sure the form isn't faking a user's credentials.
 570          *
 571          * @param $request WebRequest
 572          * @return bool
 573          * @private
 574          */
 575         function tokenOk( &$request ) {
 576                 global $wgUser;
 577                 $token = $request->getVal( 'wpEditToken' );
 578                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 579                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 580                 return $this->mTokenOk;
 581         }
 582
 583         /**
 584          * Show all applicable editing introductions
 585          */
 586         private function showIntro() {
 587                 global $wgOut, $wgUser;
 588                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 589                         if( $wgUser->isLoggedIn() ) {
 590                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 591                         } else {
 592                                 $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
 593                         }
 594                         $this->showDeletionLog( $wgOut );
 595                 }
 596         }
 597
 598         /**
 599          * Attempt to show a custom editing introduction, if supplied
 600          *
 601          * @return bool
 602          */
 603         private function showCustomIntro() {
 604                 if( $this->editintro ) {
 605                         $title = Title::newFromText( $this->editintro );
 606                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 607                                 global $wgOut;
 608                                 $revision = Revision::newFromTitle( $title );
 609                                 $wgOut->addSecondaryWikiText( $revision->getText() );
 610                                 return true;
 611                         } else {
 612                                 return false;
 613                         }
 614                 } else {
 615                         return false;
 616                 }
 617         }
 618
 619         /**
 620          * Attempt submission
 621          * @return bool false if output is done, true if the rest of the form should be displayed
 622          */
 623         function attemptSave() {
 624                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
 625                 global $wgMaxArticleSize;
 626
 627                 $fname = 'EditPage::attemptSave';
 628                 wfProfileIn( $fname );
 629                 wfProfileIn( "$fname-checks" );
 630
 631                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 632                 {
 633                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 634                         return false;
 635                 }
 636
 637                 # Reintegrate metadata
 638                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 639                 $this->mMetaData = '' ;
 640
 641                 # Check for spam
 642                 $matches = array();
 643                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 644                         $this->spamPage ( $matches[0] );
 645                         wfProfileOut( "$fname-checks" );
 646                         wfProfileOut( $fname );
 647                         return false;
 648                 }
 649                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 650                         # Error messages or other handling should be performed by the filter function
 651                         wfProfileOut( $fname );
 652                         wfProfileOut( "$fname-checks" );
 653                         return false;
 654                 }
 655                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 656                         # Error messages etc. could be handled within the hook...
 657                         wfProfileOut( $fname );
 658                         wfProfileOut( "$fname-checks" );
 659                         return false;
 660                 } elseif( $this->hookError != '' ) {
 661                         # ...or the hook could be expecting us to produce an error
 662                         wfProfileOut( "$fname-checks " );
 663                         wfProfileOut( $fname );
 664                         return true;
 665                 }
 666                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 667                         # Check block state against master, thus 'false'.
 668                         $this->blockedPage();
 669                         wfProfileOut( "$fname-checks" );
 670                         wfProfileOut( $fname );
 671                         return false;
 672                 }
 673                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 674                 if ( $this->kblength > $wgMaxArticleSize ) {
 675                         // Error will be displayed by showEditForm()
 676                         $this->tooBig = true;
 677                         wfProfileOut( "$fname-checks" );
 678                         wfProfileOut( $fname );
 679                         return true;
 680                 }
 681
 682                 if ( !$wgUser->isAllowed('edit') ) {
 683                         if ( $wgUser->isAnon() ) {
 684                                 $this->userNotLoggedInPage();
 685                                 wfProfileOut( "$fname-checks" );
 686                                 wfProfileOut( $fname );
 687                                 return false;
 688                         }
 689                         else {
 690                                 $wgOut->readOnlyPage();
 691                                 wfProfileOut( "$fname-checks" );
 692                                 wfProfileOut( $fname );
 693                                 return false;
 694                         }
 695                 }
 696
 697                 if ( wfReadOnly() ) {
 698                         $wgOut->readOnlyPage();
 699                         wfProfileOut( "$fname-checks" );
 700                         wfProfileOut( $fname );
 701                         return false;
 702                 }
 703                 if ( $wgUser->pingLimiter() ) {
 704                         $wgOut->rateLimited();
 705                         wfProfileOut( "$fname-checks" );
 706                         wfProfileOut( $fname );
 707                         return false;
 708                 }
 709
 710                 # If the article has been deleted while editing, don't save it without
 711                 # confirmation
 712                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 713                         wfProfileOut( "$fname-checks" );
 714                         wfProfileOut( $fname );
 715                         return true;
 716                 }
 717
 718                 wfProfileOut( "$fname-checks" );
 719
 720                 # If article is new, insert it.
 721                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 722                 if ( 0 == $aid ) {
 723
 724                         // Late check for create permission, just in case *PARANOIA*
 725                         if ( !$this->mTitle->userCan( 'create' ) ) {
 726                                 wfDebug( "$fname: no create permission\n" );
 727                                 $this->noCreatePermission();
 728                                 wfProfileOut( $fname );
 729                                 return;
 730                         }
 731
 732                         # Don't save a new article if it's blank.
 733                         if ( ( '' == $this->textbox1 ) ) {
 734                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 735                                         wfProfileOut( $fname );
 736                                         return false;
 737                         }
 738
 739                         $isComment=($this->section=='new');
 740                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 741                                 $this->minoredit, $this->watchthis, false, $isComment);
 742
 743                         wfProfileOut( $fname );
 744                         return false;
 745                 }
 746
 747                 # Article exists. Check for edit conflict.
 748
 749                 $this->mArticle->clear(); # Force reload of dates, etc.
 750                 $this->mArticle->forUpdate( true ); # Lock the article
 751
 752                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 753
 754                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 755                         $this->isConflict = true;
 756                         if( $this->section == 'new' ) {
 757                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 758                                         $this->mArticle->getComment() == $this->summary ) {
 759                                         // Probably a duplicate submission of a new comment.
 760                                         // This can happen when squid resends a request after
 761                                         // a timeout but the first one actually went through.
 762                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 763                                 } else {
 764                                         // New comment; suppress conflict.
 765                                         $this->isConflict = false;
 766                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 767                                 }
 768                         }
 769                 }
 770                 $userid = $wgUser->getID();
 771
 772                 if ( $this->isConflict) {
 773                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 774                                 $this->mArticle->getTimestamp() . "')\n" );
 775                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 776                 }
 777                 else {
 778                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 779                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 780                 }
 781                 if( is_null( $text ) ) {
 782                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 783                         $this->isConflict = true;
 784                         $text = $this->textbox1;
 785                 }
 786
 787                 # Suppress edit conflict with self, except for section edits where merging is required.
 788                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 789                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 790                         $this->isConflict = false;
 791                 } else {
 792                         # switch from section editing to normal editing in edit conflict
 793                         if($this->isConflict) {
 794                                 # Attempt merge
 795                                 if( $this->mergeChangesInto( $text ) ){
 796                                         // Successful merge! Maybe we should tell the user the good news?
 797                                         $this->isConflict = false;
 798                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 799                                 } else {
 800                                         $this->section = '';
 801                                         $this->textbox1 = $text;
 802                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 803                                 }
 804                         }
 805                 }
 806
 807                 if ( $this->isConflict ) {
 808                         wfProfileOut( $fname );
 809                         return true;
 810                 }
 811
 812                 $oldtext = $this->mArticle->getContent();
 813
 814                 # Handle the user preference to force summaries here, but not for null edits
 815                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 816                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 817                         if( md5( $this->summary ) == $this->autoSumm ) {
 818                                 $this->missingSummary = true;
 819                                 wfProfileOut( $fname );
 820                                 return( true );
 821                         }
 822                 }
 823
 824                 #And a similar thing for new sections
 825                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 826                         if (trim($this->summary) == '') {
 827                                 $this->missingSummary = true;
 828                                 wfProfileOut( $fname );
 829                                 return( true );
 830                         }
 831                 }
 832
 833                 # All's well
 834                 wfProfileIn( "$fname-sectionanchor" );
 835                 $sectionanchor = '';
 836                 if( $this->section == 'new' ) {
 837                         if ( $this->textbox1 == '' ) {
 838                                 $this->missingComment = true;
 839                                 return true;
 840                         }
 841                         if( $this->summary != '' ) {
 842                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 843                         }
 844                 } elseif( $this->section != '' ) {
 845                         # Try to get a section anchor from the section source, redirect to edited section if header found
 846                         # XXX: might be better to integrate this into Article::replaceSection
 847                         # for duplicate heading checking and maybe parsing
 848                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 849                         # we can't deal with anchors, includes, html etc in the header for now,
 850                         # headline would need to be parsed to improve this
 851                         if($hasmatch and strlen($matches[2]) > 0) {
 852                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 853                         }
 854                 }
 855                 wfProfileOut( "$fname-sectionanchor" );
 856
 857                 // Save errors may fall down to the edit form, but we've now
 858                 // merged the section into full text. Clear the section field
 859                 // so that later submission of conflict forms won't try to
 860                 // replace that into a duplicated mess.
 861                 $this->textbox1 = $text;
 862                 $this->section = '';
 863
 864                 // Check for length errors again now that the section is merged in
 865                 $this->kblength = (int)(strlen( $text ) / 1024);
 866                 if ( $this->kblength > $wgMaxArticleSize ) {
 867                         $this->tooBig = true;
 868                         wfProfileOut( $fname );
 869                         return true;
 870                 }
 871
 872                 # update the article here
 873                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 874                         $this->watchthis, '', $sectionanchor ) ) {
 875                         wfProfileOut( $fname );
 876                         return false;
 877                 } else {
 878                         $this->isConflict = true;
 879                 }
 880                 wfProfileOut( $fname );
 881                 return true;
 882         }
 883
 884         /**
 885          * Initialise form fields in the object
 886          * Called on the first invocation, e.g. when a user clicks an edit link
 887          */
 888         function initialiseForm() {
 889                 $this->edittime = $this->mArticle->getTimestamp();
 890                 $this->summary = '';
 891                 $this->textbox1 = $this->getContent(false);
 892                 if ($this->textbox1 === false) return false;
 893
 894                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 895                         $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
 896                 wfProxyCheck();
 897                 return true;
 898         }
 899
 900         /**
 901          * Send the edit form and related headers to $wgOut
 902          * @param $formCallback Optional callable that takes an OutputPage
 903          *                      parameter; will be called during form output
 904          *                      near the top, for captchas and the like.
 905          */
 906         function showEditForm( $formCallback=null ) {
 907                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 908
 909                 $fname = 'EditPage::showEditForm';
 910                 wfProfileIn( $fname );
 911
 912                 $sk = $wgUser->getSkin();
 913
 914                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 915
 916                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 917
 918                 # Enabled article-related sidebar, toplinks, etc.
 919                 $wgOut->setArticleRelated( true );
 920
 921                 if ( $this->formtype == 'preview' ) {
 922                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
 923                 }
 924
 925                 if ( $this->isConflict ) {
 926                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 927                         $wgOut->setPageTitle( $s );
 928                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 929
 930                         $this->textbox2 = $this->textbox1;
 931                         $this->textbox1 = $this->getContent();
 932                         $this->edittime = $this->mArticle->getTimestamp();
 933                 } else {
 934
 935                         if( $this->section != '' ) {
 936                                 if( $this->section == 'new' ) {
 937                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 938                                 } else {
 939                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 940                                         $matches = array();
 941                                         if( !$this->summary && !$this->preview && !$this->diff ) {
 942                                                 preg_match( "/^(=+)(.+)\\1/mi",
 943                                                         $this->textbox1,
 944                                                         $matches );
 945                                                 if( !empty( $matches[2] ) ) {
 946                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 947                                                 }
 948                                         }
 949                                 }
 950                         } else {
 951                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 952                         }
 953                         $wgOut->setPageTitle( $s );
 954
 955                         if ( $this->missingComment ) {
 956                                 $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
 957                         }
 958
 959                         if( $this->missingSummary && $this->section != 'new' ) {
 960                                 $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
 961                         }
 962
 963                         if( $this->missingSummary && $this->section == 'new' ) {
 964                                 $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
 965                         }
 966
 967                         if( !$this->hookError == '' ) {
 968                                 $wgOut->addWikiText( $this->hookError );
 969                         }
 970
 971                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 972                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 973                         }
 974                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
 975                         // Let sysop know that this will make private content public if saved
 976                                 if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
 977                                         $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
 978                                 }
 979                                 if( !$this->mArticle->mRevision->isCurrent() ) {
 980                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
 981                                         $wgOut->addWikiText( wfMsg( 'editingold' ) );
 982                                 }
 983                         }
 984                 }
 985
 986                 if( wfReadOnly() ) {
 987                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 988                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
 989                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
 990                 } else {
 991                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
 992                                 # Check the skin exists
 993                                 if( $this->isValidCssJsSubpage ) {
 994                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
 995                                 } else {
 996                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
 997                                 }
 998                         }
 999                 }
1000
1001                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1002                         # Show a warning if editing an interface message
1003                         $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
1004                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1005                         # Is the title semi-protected?
1006                         if( $this->mTitle->isSemiProtected() ) {
1007                                 $notice = wfMsg( 'semiprotectedpagewarning' );
1008                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
1009                                         $notice = '';
1010                         } else {
1011                         # Then it must be protected based on static groups (regular)
1012                                 $notice = wfMsg( 'protectedpagewarning' );
1013                         }
1014                         $wgOut->addWikiText( $notice );
1015                 }
1016                 if ( $this->mTitle->isCascadeProtected() ) {
1017                         # Is this page under cascading protection from some source pages?
1018                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1019                         if ( count($cascadeSources) > 0 ) {
1020                                 # Explain, and list the titles responsible
1021                                 $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
1022                                 foreach( $cascadeSources as $page ) {
1023                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1024                                 }
1025                         }
1026                         $wgOut->addWikiText( $notice );
1027                 }
1028
1029                 if ( $this->kblength === false ) {
1030                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1031                 }
1032                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1033                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
1034                 } elseif( $this->kblength > 29 ) {
1035                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
1036                 }
1037
1038                 #need to parse the preview early so that we know which templates are used,
1039                 #otherwise users with "show preview after edit box" will get a blank list
1040                 if ( $this->formtype == 'preview' ) {
1041                         $previewOutput = $this->getPreviewText();
1042                 }
1043
1044                 $rows = $wgUser->getIntOption( 'rows' );
1045                 $cols = $wgUser->getIntOption( 'cols' );
1046
1047                 $ew = $wgUser->getOption( 'editwidth' );
1048                 if ( $ew ) $ew = " style=\"width:100%\"";
1049                 else $ew = '';
1050
1051                 $q = 'action=submit';
1052                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1053                 $action = $this->mTitle->escapeLocalURL( $q );
1054
1055                 $summary = wfMsg('summary');
1056                 $subject = wfMsg('subject');
1057
1058                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
1059                                 wfMsgExt('cancel', array('parseinline')) );
1060                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1061                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1062                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1063                         htmlspecialchars( wfMsg( 'newwindow' ) );
1064
1065                 global $wgRightsText;
1066                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
1067                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
1068                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1069                                 $wgRightsText ) . "\n</div>";
1070
1071                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1072                         # prepare toolbar for edit buttons
1073                         $toolbar = $this->getEditToolbar();
1074                 } else {
1075                         $toolbar = '';
1076                 }
1077
1078                 // activate checkboxes if user wants them to be always active
1079                 if( !$this->preview && !$this->diff ) {
1080                         # Sort out the "watch" checkbox
1081                         if( $wgUser->getOption( 'watchdefault' ) ) {
1082                                 # Watch all edits
1083                                 $this->watchthis = true;
1084                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1085                                 # Watch creations
1086                                 $this->watchthis = true;
1087                         } elseif( $this->mTitle->userIsWatching() ) {
1088                                 # Already watched
1089                                 $this->watchthis = true;
1090                         }
1091
1092                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1093                 }
1094
1095                 $wgOut->addHTML( $this->editFormPageTop );
1096
1097                 if ( $wgUser->getOption( 'previewontop' ) ) {
1098
1099                         if ( 'preview' == $this->formtype ) {
1100                                 $this->showPreview( $previewOutput );
1101                         } else {
1102                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1103                         }
1104
1105                         if ( 'diff' == $this->formtype ) {
1106                                 $this->showDiff();
1107                         }
1108                 }
1109
1110
1111                 $wgOut->addHTML( $this->editFormTextTop );
1112
1113                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1114                 # Otherwise, show a summary field at the bottom
1115                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1116                 if( $this->section == 'new' ) {
1117                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1118                         $editsummary = '';
1119                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1120                         $summarypreview = '';
1121                 } else {
1122                         $commentsubject = '';
1123                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1124                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1125                         $subjectpreview = '';
1126                 }
1127
1128                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1129                 if( !$this->preview && !$this->diff ) {
1130                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1131                 }
1132                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1133                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1134
1135                 global $wgUseMetadataEdit ;
1136                 if ( $wgUseMetadataEdit ) {
1137                         $metadata = $this->mMetaData ;
1138                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1139                         $top = wfMsgWikiHtml( 'metadata_help' );
1140                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1141                 }
1142                 else $metadata = "" ;
1143
1144                 $hidden = '';
1145                 $recreate = '';
1146                 if ($this->deletedSinceEdit) {
1147                         if ( 'save' != $this->formtype ) {
1148                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
1149                         } else {
1150                                 // Hide the toolbar and edit area, use can click preview to get it back
1151                                 // Add an confirmation checkbox and explanation.
1152                                 $toolbar = '';
1153                                 $hidden = 'type="hidden" style="display:none;"';
1154                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1155                                 $recreate .=
1156                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1157                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1158                         }
1159                 }
1160
1161                 $tabindex = 2;
1162
1163                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1164                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1165
1166                 $checkboxhtml = implode( $checkboxes, "\n" );
1167
1168                 $buttons = $this->getEditButtons( $tabindex );
1169                 $buttonshtml = implode( $buttons, "\n" );
1170
1171                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1172                         ? '' : Xml::hidden( 'safemode', '1' );
1173
1174                 $wgOut->addHTML( <<<END
1175 {$toolbar}
1176 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1177 END
1178 );
1179
1180                 if( is_callable( $formCallback ) ) {
1181                         call_user_func_array( $formCallback, array( &$wgOut ) );
1182                 }
1183
1184                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1185
1186                 // Put these up at the top to ensure they aren't lost on early form submission
1187                 $wgOut->addHTML( "
1188 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1189 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1190 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1191 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1192
1193                 $wgOut->addHTML( <<<END
1194 $recreate
1195 {$commentsubject}
1196 {$subjectpreview}
1197 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1198 cols='{$cols}'{$ew} $hidden>
1199 END
1200 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1201 "
1202 </textarea>
1203                 " );
1204
1205                 $wgOut->addWikiText( $copywarn );
1206                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1207                 $wgOut->addHTML( "
1208 {$metadata}
1209 {$editsummary}
1210 {$summarypreview}
1211 {$checkboxhtml}
1212 {$safemodehtml}
1213 ");
1214
1215                 $wgOut->addHTML(
1216 "<div class='editButtons'>
1217 {$buttonshtml}
1218         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1219 </div><!-- editButtons -->
1220 </div><!-- editOptions -->");
1221
1222                 $wgOut->addHtml( '<div class="mw-editTools">' );
1223                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1224                 $wgOut->addHtml( '</div>' );
1225
1226                 $wgOut->addHTML( $this->editFormTextAfterTools );
1227
1228                 $wgOut->addHTML( "
1229 <div class='templatesUsed'>
1230 {$formattedtemplates}
1231 </div>
1232 " );
1233
1234                 /**
1235                  * To make it harder for someone to slip a user a page
1236                  * which submits an edit form to the wiki without their
1237                  * knowledge, a random token is associated with the login
1238                  * session. If it's not passed back with the submission,
1239                  * we won't save the page, or render user JavaScript and
1240                  * CSS previews.
1241                  *
1242                  * For anon editors, who may not have a session, we just
1243                  * include the constant suffix to prevent editing from
1244                  * broken text-mangling proxies.
1245                  */
1246                 $token = htmlspecialchars( $wgUser->editToken() );
1247                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1248
1249
1250                 # If a blank edit summary was previously provided, and the appropriate
1251                 # user preference is active, pass a hidden tag here. This will stop the
1252                 # user being bounced back more than once in the event that a summary
1253                 # is not required.
1254                 if( $this->missingSummary ) {
1255                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1256                 }
1257
1258                 # For a bit more sophisticated detection of blank summaries, hash the
1259                 # automatic one and pass that in a hidden field.
1260                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1261                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1262
1263                 if ( $this->isConflict ) {
1264                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1265
1266                         $de = new DifferenceEngine( $this->mTitle );
1267                         $de->setText( $this->textbox2, $this->textbox1 );
1268                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1269
1270                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1271                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1272                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1273                 }
1274                 $wgOut->addHTML( $this->editFormTextBottom );
1275                 $wgOut->addHTML( "</form>\n" );
1276                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1277
1278                         if ( $this->formtype == 'preview') {
1279                                 $this->showPreview( $previewOutput );
1280                         } else {
1281                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1282                         }
1283
1284                         if ( $this->formtype == 'diff') {
1285                                 $this->showDiff();
1286                         }
1287
1288                 }
1289
1290                 wfProfileOut( $fname );
1291         }
1292
1293         /**
1294          * Append preview output to $wgOut.
1295          * Includes category rendering if this is a category page.
1296          *
1297          * @param string $text The HTML to be output for the preview.
1298          */
1299         private function showPreview( $text ) {
1300                 global $wgOut;
1301
1302                 $wgOut->addHTML( '<div id="wikiPreview">' );
1303                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1304                         $this->mArticle->openShowCategory();
1305                 }
1306                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1307                 $wgOut->addHTML( $text );
1308                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1309                         $this->mArticle->closeShowCategory();
1310                 }
1311                 $wgOut->addHTML( '</div>' );
1312         }
1313
1314         /**
1315          * Live Preview lets us fetch rendered preview page content and
1316          * add it to the page without refreshing the whole page.
1317          * If not supported by the browser it will fall through to the normal form
1318          * submission method.
1319          *
1320          * This function outputs a script tag to support live preview, and
1321          * returns an onclick handler which should be added to the attributes
1322          * of the preview button
1323          */
1324         function doLivePreviewScript() {
1325                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1326                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1327                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1328                         '"></script>' . "\n" );
1329                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1330                 return "return !livePreview(" .
1331                         "getElementById('wikiPreview')," .
1332                         "editform.wpTextbox1.value," .
1333                         '"' . $liveAction . '"' . ")";
1334         }
1335
1336         function getLastDelete() {
1337                 $dbr = wfGetDB( DB_SLAVE );
1338                 $fname = 'EditPage::getLastDelete';
1339                 $res = $dbr->select(
1340                         array( 'logging', 'user' ),
1341                         array( 'log_type',
1342                                'log_action',
1343                                'log_timestamp',
1344                                'log_user',
1345                                'log_namespace',
1346                                'log_title',
1347                                'log_comment',
1348                                'log_params',
1349                                'user_name', ),
1350                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1351                                'log_title' => $this->mTitle->getDBkey(),
1352                                'log_type' => 'delete',
1353                                'log_action' => 'delete',
1354                                'user_id=log_user' ),
1355                         $fname,
1356                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1357
1358                 if($dbr->numRows($res) == 1) {
1359                         while ( $x = $dbr->fetchObject ( $res ) )
1360                                 $data = $x;
1361                         $dbr->freeResult ( $res ) ;
1362                 } else {
1363                         $data = null;
1364                 }
1365                 return $data;
1366         }
1367
1368         /**
1369          * @todo document
1370          */
1371         function getPreviewText() {
1372                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1373
1374                 $fname = 'EditPage::getPreviewText';
1375                 wfProfileIn( $fname );
1376
1377                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1378                         if ( $this->mTokenOkExceptSuffix ) {
1379                                 $msg = 'token_suffix_mismatch';
1380                         } else {
1381                                 $msg = 'session_fail_preview';
1382                         }
1383                 } else {
1384                         $msg = 'previewnote';
1385                 }
1386                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1387                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1388                 if ( $this->isConflict ) {
1389                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1390                 }
1391
1392                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1393                 $parserOptions->setEditSection( false );
1394
1395                 global $wgRawHtml;
1396                 if( $wgRawHtml && !$this->mTokenOk ) {
1397                         // Could be an offsite preview attempt. This is very unsafe if
1398                         // HTML is enabled, as it could be an attack.
1399                         return $wgOut->parse( "<div class='previewnote'>" .
1400                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1401                 }
1402
1403                 # don't parse user css/js, show message about preview
1404                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1405
1406                 if ( $this->isCssJsSubpage ) {
1407                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1408                                 $previewtext = wfMsg('usercsspreview');
1409                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1410                                 $previewtext = wfMsg('userjspreview');
1411                         }
1412                         $parserOptions->setTidy(true);
1413                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1414                         $wgOut->addHTML( $parserOutput->mText );
1415                         wfProfileOut( $fname );
1416                         return $previewhead;
1417                 } else {
1418                         $toparse = $this->textbox1;
1419
1420                         # If we're adding a comment, we need to show the
1421                         # summary as the headline
1422                         if($this->section=="new" && $this->summary!="") {
1423                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1424                         }
1425
1426                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1427                         $parserOptions->setTidy(true);
1428                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1429                                         $wgTitle, $parserOptions );
1430
1431                         $previewHTML = $parserOutput->getText();
1432                         $wgOut->addParserOutputNoText( $parserOutput );
1433
1434                         # ParserOutput might have altered the page title, so reset it
1435                         $wgOut->setPageTitle( wfMsg( 'editing', $this->mTitle->getPrefixedText() ) );
1436
1437                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1438                                 foreach ( array_keys( $template ) as $dbk)
1439                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1440
1441                         wfProfileOut( $fname );
1442                         return $previewhead . $previewHTML;
1443                 }
1444         }
1445
1446         /**
1447          * Call the stock "user is blocked" page
1448          */
1449         function blockedPage() {
1450                 global $wgOut, $wgUser;
1451                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1452
1453                 # If the user made changes, preserve them when showing the markup
1454                 # (This happens when a user is blocked during edit, for instance)
1455                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1456                 if( $first ) {
1457                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1458                 } else {
1459                         $source = $this->textbox1;
1460                 }
1461
1462                 # Spit out the source or the user's modified version
1463                 if( $source !== false ) {
1464                         $rows = $wgUser->getOption( 'rows' );
1465                         $cols = $wgUser->getOption( 'cols' );
1466                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1467                         $wgOut->addHtml( '<hr />' );
1468                         $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
1469                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1470                 }
1471         }
1472
1473         /**
1474          * Produce the stock "please login to edit pages" page
1475          */
1476         function userNotLoggedInPage() {
1477                 global $wgUser, $wgOut;
1478                 $skin = $wgUser->getSkin();
1479
1480                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1481                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1482
1483                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1484                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1485                 $wgOut->setArticleRelated( false );
1486
1487                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1488                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1489         }
1490
1491         /**
1492          * Creates a basic error page which informs the user that
1493          * they have to validate their email address before being
1494          * allowed to edit.
1495          */
1496         function userNotConfirmedPage() {
1497                 global $wgOut;
1498
1499                 $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
1500                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1501                 $wgOut->setArticleRelated( false );
1502
1503                 $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
1504                 $wgOut->returnToMain( false );
1505         }
1506
1507         /**
1508          * Creates a basic error page which informs the user that
1509          * they have attempted to edit a nonexistant section.
1510          */
1511         function noSuchSectionPage() {
1512                 global $wgOut;
1513
1514                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1515                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1516                 $wgOut->setArticleRelated( false );
1517
1518                 $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
1519                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1520         }
1521
1522         /**
1523          * Produce the stock "your edit contains spam" page
1524          *
1525          * @param $match Text which triggered one or more filters
1526          */
1527         function spamPage( $match = false ) {
1528                 global $wgOut;
1529
1530                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1531                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1532                 $wgOut->setArticleRelated( false );
1533
1534                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1535                 if ( $match )
1536                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1537
1538                 $wgOut->returnToMain( false );
1539         }
1540
1541         /**
1542          * @private
1543          * @todo document
1544          */
1545         function mergeChangesInto( &$editText ){
1546                 $fname = 'EditPage::mergeChangesInto';
1547                 wfProfileIn( $fname );
1548
1549                 $db = wfGetDB( DB_MASTER );
1550
1551                 // This is the revision the editor started from
1552                 $baseRevision = Revision::loadFromTimestamp(
1553                         $db, $this->mArticle->mTitle, $this->edittime );
1554                 if( is_null( $baseRevision ) ) {
1555                         wfProfileOut( $fname );
1556                         return false;
1557                 }
1558                 $baseText = $baseRevision->getText();
1559
1560                 // The current state, we want to merge updates into it
1561                 $currentRevision =  Revision::loadFromTitle(
1562                         $db, $this->mArticle->mTitle );
1563                 if( is_null( $currentRevision ) ) {
1564                         wfProfileOut( $fname );
1565                         return false;
1566                 }
1567                 $currentText = $currentRevision->getText();
1568
1569                 $result = '';
1570                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1571                         $editText = $result;
1572                         wfProfileOut( $fname );
1573                         return true;
1574                 } else {
1575                         wfProfileOut( $fname );
1576                         return false;
1577                 }
1578         }
1579
1580         /**
1581          * Check if the browser is on a blacklist of user-agents known to
1582          * mangle UTF-8 data on form submission. Returns true if Unicode
1583          * should make it through, false if it's known to be a problem.
1584          * @return bool
1585          * @private
1586          */
1587         function checkUnicodeCompliantBrowser() {
1588                 global $wgBrowserBlackList;
1589                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1590                         // No User-Agent header sent? Trust it by default...
1591                         return true;
1592                 }
1593                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1594                 foreach ( $wgBrowserBlackList as $browser ) {
1595                         if ( preg_match($browser, $currentbrowser) ) {
1596                                 return false;
1597                         }
1598                 }
1599                 return true;
1600         }
1601
1602         /**
1603          * Format an anchor fragment as it would appear for a given section name
1604          * @param string $text
1605          * @return string
1606          * @private
1607          */
1608         function sectionAnchor( $text ) {
1609                 $headline = Sanitizer::decodeCharReferences( $text );
1610                 # strip out HTML
1611                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
1612                 $headline = trim( $headline );
1613                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
1614                 $replacearray = array(
1615                         '%3A' => ':',
1616                         '%' => '.'
1617                 );
1618                 return str_replace(
1619                         array_keys( $replacearray ),
1620                         array_values( $replacearray ),
1621                         $sectionanchor );
1622         }
1623
1624         /**
1625          * Shows a bulletin board style toolbar for common editing functions.
1626          * It can be disabled in the user preferences.
1627          * The necessary JavaScript code can be found in style/wikibits.js.
1628          */
1629         function getEditToolbar() {
1630                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1631
1632                 /**
1633                  * toolarray an array of arrays which each include the filename of
1634                  * the button image (without path), the opening tag, the closing tag,
1635                  * and optionally a sample text that is inserted between the two when no
1636                  * selection is highlighted.
1637                  * The tip text is shown when the user moves the mouse over the button.
1638                  *
1639                  * Already here are accesskeys (key), which are not used yet until someone
1640                  * can figure out a way to make them work in IE. However, we should make
1641                  * sure these keys are not defined on the edit page.
1642                  */
1643                 $toolarray = array(
1644                         array(  'image' => 'button_bold.png',
1645                                 'id'    => 'mw-editbutton-bold',
1646                                 'open'  => '\\\'\\\'\\\'',
1647                                 'close' => '\\\'\\\'\\\'',
1648                                 'sample'=> wfMsg('bold_sample'),
1649                                 'tip'   => wfMsg('bold_tip'),
1650                                 'key'   => 'B'
1651                         ),
1652                         array(  'image' => 'button_italic.png',
1653                                 'id'    => 'mw-editbutton-italic',
1654                                 'open'  => '\\\'\\\'',
1655                                 'close' => '\\\'\\\'',
1656                                 'sample'=> wfMsg('italic_sample'),
1657                                 'tip'   => wfMsg('italic_tip'),
1658                                 'key'   => 'I'
1659                         ),
1660                         array(  'image' => 'button_link.png',
1661                                 'id'    => 'mw-editbutton-link',
1662                                 'open'  => '[[',
1663                                 'close' => ']]',
1664                                 'sample'=> wfMsg('link_sample'),
1665                                 'tip'   => wfMsg('link_tip'),
1666                                 'key'   => 'L'
1667                         ),
1668                         array(  'image' => 'button_extlink.png',
1669                                 'id'    => 'mw-editbutton-extlink',
1670                                 'open'  => '[',
1671                                 'close' => ']',
1672                                 'sample'=> wfMsg('extlink_sample'),
1673                                 'tip'   => wfMsg('extlink_tip'),
1674                                 'key'   => 'X'
1675                         ),
1676                         array(  'image' => 'button_headline.png',
1677                                 'id'    => 'mw-editbutton-headline',
1678                                 'open'  => "\\n== ",
1679                                 'close' => " ==\\n",
1680                                 'sample'=> wfMsg('headline_sample'),
1681                                 'tip'   => wfMsg('headline_tip'),
1682                                 'key'   => 'H'
1683                         ),
1684                         array(  'image' => 'button_image.png',
1685                                 'id'    => 'mw-editbutton-image',
1686                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1687                                 'close' => ']]',
1688                                 'sample'=> wfMsg('image_sample'),
1689                                 'tip'   => wfMsg('image_tip'),
1690                                 'key'   => 'D'
1691                         ),
1692                         array(  'image' => 'button_media.png',
1693                                 'id'    => 'mw-editbutton-media',
1694                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1695                                 'close' => ']]',
1696                                 'sample'=> wfMsg('media_sample'),
1697                                 'tip'   => wfMsg('media_tip'),
1698                                 'key'   => 'M'
1699                         ),
1700                         array(  'image' => 'button_math.png',
1701                                 'id'    => 'mw-editbutton-math',
1702                                 'open'  => "<math>",
1703                                 'close' => "<\\/math>",
1704                                 'sample'=> wfMsg('math_sample'),
1705                                 'tip'   => wfMsg('math_tip'),
1706                                 'key'   => 'C'
1707                         ),
1708                         array(  'image' => 'button_nowiki.png',
1709                                 'id'    => 'mw-editbutton-nowiki',
1710                                 'open'  => "<nowiki>",
1711                                 'close' => "<\\/nowiki>",
1712                                 'sample'=> wfMsg('nowiki_sample'),
1713                                 'tip'   => wfMsg('nowiki_tip'),
1714                                 'key'   => 'N'
1715                         ),
1716                         array(  'image' => 'button_sig.png',
1717                                 'id'    => 'mw-editbutton-signature',
1718                                 'open'  => '--~~~~',
1719                                 'close' => '',
1720                                 'sample'=> '',
1721                                 'tip'   => wfMsg('sig_tip'),
1722                                 'key'   => 'Y'
1723                         ),
1724                         array(  'image' => 'button_hr.png',
1725                                 'id'    => 'mw-editbutton-hr',
1726                                 'open'  => "\\n----\\n",
1727                                 'close' => '',
1728                                 'sample'=> '',
1729                                 'tip'   => wfMsg('hr_tip'),
1730                                 'key'   => 'R'
1731                         )
1732                 );
1733                 $toolbar = "<div id='toolbar'>\n";
1734                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1735
1736                 foreach($toolarray as $tool) {
1737
1738                         $cssId = $tool['id'];
1739                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1740                         $open=$tool['open'];
1741                         $close=$tool['close'];
1742                         $sample = wfEscapeJsString( $tool['sample'] );
1743
1744                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1745                         // Older browsers show a "speedtip" type message only for ALT.
1746                         // Ideally these should be different, realistically they
1747                         // probably don't need to be.
1748                         $tip = wfEscapeJsString( $tool['tip'] );
1749
1750                         #$key = $tool["key"];
1751
1752                         $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
1753                 }
1754
1755                 $toolbar.="/*]]>*/\n</script>";
1756                 $toolbar.="\n</div>";
1757                 return $toolbar;
1758         }
1759
1760         /**
1761          * Returns an array of html code of the following checkboxes:
1762          * minor and watch
1763          *
1764          * @param $tabindex Current tabindex
1765          * @param $skin Skin object
1766          * @param $checked Array of checkbox => bool, where bool indicates the checked
1767          *                 status of the checkbox
1768          *
1769          * @return array
1770          */
1771         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1772                 global $wgUser;
1773
1774                 $checkboxes = array();
1775
1776                 $checkboxes['minor'] = '';
1777                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1778                 if ( $wgUser->isAllowed('minoredit') ) {
1779                         $attribs = array(
1780                                 'tabindex'  => ++$tabindex,
1781                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1782                                 'id'        => 'wpMinoredit',
1783                         );
1784                         $checkboxes['minor'] =
1785                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1786                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1787                 }
1788
1789                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1790                 $checkboxes['watch'] = '';
1791                 if ( $wgUser->isLoggedIn() ) {
1792                         $attribs = array(
1793                                 'tabindex'  => ++$tabindex,
1794                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1795                                 'id'        => 'wpWatchthis',
1796                         );
1797                         $checkboxes['watch'] =
1798                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1799                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1800                 }
1801                 return $checkboxes;
1802         }
1803
1804         /**
1805          * Returns an array of html code of the following buttons:
1806          * save, diff, preview and live
1807          *
1808          * @param $tabindex Current tabindex
1809          *
1810          * @return array
1811          */
1812         public function getEditButtons(&$tabindex) {
1813                 global $wgLivePreview, $wgUser;
1814
1815                 $buttons = array();
1816
1817                 $temp = array(
1818                         'id'        => 'wpSave',
1819                         'name'      => 'wpSave',
1820                         'type'      => 'submit',
1821                         'tabindex'  => ++$tabindex,
1822                         'value'     => wfMsg('savearticle'),
1823                         'accesskey' => wfMsg('accesskey-save'),
1824                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1825                 );
1826                 $buttons['save'] = wfElement('input', $temp, '');
1827
1828                 ++$tabindex; // use the same for preview and live preview
1829                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1830                         $temp = array(
1831                                 'id'        => 'wpPreview',
1832                                 'name'      => 'wpPreview',
1833                                 'type'      => 'submit',
1834                                 'tabindex'  => $tabindex,
1835                                 'value'     => wfMsg('showpreview'),
1836                                 'accesskey' => '',
1837                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1838                                 'style'     => 'display: none;',
1839                         );
1840                         $buttons['preview'] = wfElement('input', $temp, '');
1841
1842                         $temp = array(
1843                                 'id'        => 'wpLivePreview',
1844                                 'name'      => 'wpLivePreview',
1845                                 'type'      => 'submit',
1846                                 'tabindex'  => $tabindex,
1847                                 'value'     => wfMsg('showlivepreview'),
1848                                 'accesskey' => wfMsg('accesskey-preview'),
1849                                 'title'     => '',
1850                                 'onclick'   => $this->doLivePreviewScript(),
1851                         );
1852                         $buttons['live'] = wfElement('input', $temp, '');
1853                 } else {
1854                         $temp = array(
1855                                 'id'        => 'wpPreview',
1856                                 'name'      => 'wpPreview',
1857                                 'type'      => 'submit',
1858                                 'tabindex'  => $tabindex,
1859                                 'value'     => wfMsg('showpreview'),
1860                                 'accesskey' => wfMsg('accesskey-preview'),
1861                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1862                         );
1863                         $buttons['preview'] = wfElement('input', $temp, '');
1864                         $buttons['live'] = '';
1865                 }
1866
1867                 $temp = array(
1868                         'id'        => 'wpDiff',
1869                         'name'      => 'wpDiff',
1870                         'type'      => 'submit',
1871                         'tabindex'  => ++$tabindex,
1872                         'value'     => wfMsg('showdiff'),
1873                         'accesskey' => wfMsg('accesskey-diff'),
1874                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1875                 );
1876                 $buttons['diff'] = wfElement('input', $temp, '');
1877
1878                 return $buttons;
1879         }
1880
1881         /**
1882          * Output preview text only. This can be sucked into the edit page
1883          * via JavaScript, and saves the server time rendering the skin as
1884          * well as theoretically being more robust on the client (doesn't
1885          * disturb the edit box's undo history, won't eat your text on
1886          * failure, etc).
1887          *
1888          * @todo This doesn't include category or interlanguage links.
1889          *       Would need to enhance it a bit, <s>maybe wrap them in XML
1890          *       or something...</s> that might also require more skin
1891          *       initialization, so check whether that's a problem.
1892          */
1893         function livePreview() {
1894                 global $wgOut;
1895                 $wgOut->disable();
1896                 header( 'Content-type: text/xml; charset=utf-8' );
1897                 header( 'Cache-control: no-cache' );
1898
1899                 $s =
1900                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
1901                 Xml::openElement( 'livepreview' ) .
1902                 Xml::element( 'preview', null, $this->getPreviewText() ) .
1903                 Xml::element( 'br', array( 'style' => 'clear: both;' ) ) .
1904                 Xml::closeElement( 'livepreview' );
1905                 echo $s;
1906         }
1907
1908
1909         /**
1910          * Get a diff between the current contents of the edit box and the
1911          * version of the page we're editing from.
1912          *
1913          * If this is a section edit, we'll replace the section as for final
1914          * save and then make a comparison.
1915          */
1916         function showDiff() {
1917                 $oldtext = $this->mArticle->fetchContent();
1918                 $newtext = $this->mArticle->replaceSection(
1919                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1920                 $newtext = $this->mArticle->preSaveTransform( $newtext );
1921                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
1922                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
1923                 if ( $oldtext !== false  || $newtext != '' ) {
1924                         $de = new DifferenceEngine( $this->mTitle );
1925                         $de->setText( $oldtext, $newtext );
1926                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1927                         $de->showDiffStyle();
1928                 } else {
1929                         $difftext = '';
1930                 }
1931
1932                 global $wgOut;
1933                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
1934         }
1935
1936         /**
1937          * Filter an input field through a Unicode de-armoring process if it
1938          * came from an old browser with known broken Unicode editing issues.
1939          *
1940          * @param WebRequest $request
1941          * @param string $field
1942          * @return string
1943          * @private
1944          */
1945         function safeUnicodeInput( $request, $field ) {
1946                 $text = rtrim( $request->getText( $field ) );
1947                 return $request->getBool( 'safemode' )
1948                         ? $this->unmakesafe( $text )
1949                         : $text;
1950         }
1951
1952         /**
1953          * Filter an output field through a Unicode armoring process if it is
1954          * going to an old browser with known broken Unicode editing issues.
1955          *
1956          * @param string $text
1957          * @return string
1958          * @private
1959          */
1960         function safeUnicodeOutput( $text ) {
1961                 global $wgContLang;
1962                 $codedText = $wgContLang->recodeForEdit( $text );
1963                 return $this->checkUnicodeCompliantBrowser()
1964                         ? $codedText
1965                         : $this->makesafe( $codedText );
1966         }
1967
1968         /**
1969          * A number of web browsers are known to corrupt non-ASCII characters
1970          * in a UTF-8 text editing environment. To protect against this,
1971          * detected browsers will be served an armored version of the text,
1972          * with non-ASCII chars converted to numeric HTML character references.
1973          *
1974          * Preexisting such character references will have a 0 added to them
1975          * to ensure that round-trips do not alter the original data.
1976          *
1977          * @param string $invalue
1978          * @return string
1979          * @private
1980          */
1981         function makesafe( $invalue ) {
1982                 // Armor existing references for reversability.
1983                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1984
1985                 $bytesleft = 0;
1986                 $result = "";
1987                 $working = 0;
1988                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1989                         $bytevalue = ord( $invalue{$i} );
1990                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1991                                 $result .= chr( $bytevalue );
1992                                 $bytesleft = 0;
1993                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
1994                                 $working = $working << 6;
1995                                 $working += ($bytevalue & 0x3F);
1996                                 $bytesleft--;
1997                                 if( $bytesleft <= 0 ) {
1998                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
1999                                 }
2000                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2001                                 $working = $bytevalue & 0x1F;
2002                                 $bytesleft = 1;
2003                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2004                                 $working = $bytevalue & 0x0F;
2005                                 $bytesleft = 2;
2006                         } else { //1111 0xxx
2007                                 $working = $bytevalue & 0x07;
2008                                 $bytesleft = 3;
2009                         }
2010                 }
2011                 return $result;
2012         }
2013
2014         /**
2015          * Reverse the previously applied transliteration of non-ASCII characters
2016          * back to UTF-8. Used to protect data from corruption by broken web browsers
2017          * as listed in $wgBrowserBlackList.
2018          *
2019          * @param string $invalue
2020          * @return string
2021          * @private
2022          */
2023         function unmakesafe( $invalue ) {
2024                 $result = "";
2025                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2026                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2027                                 $i += 3;
2028                                 $hexstring = "";
2029                                 do {
2030                                         $hexstring .= $invalue{$i};
2031                                         $i++;
2032                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2033
2034                                 // Do some sanity checks. These aren't needed for reversability,
2035                                 // but should help keep the breakage down if the editor
2036                                 // breaks one of the entities whilst editing.
2037                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2038                                         $codepoint = hexdec($hexstring);
2039                                         $result .= codepointToUtf8( $codepoint );
2040                                 } else {
2041                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2042                                 }
2043                         } else {
2044                                 $result .= substr( $invalue, $i, 1 );
2045                         }
2046                 }
2047                 // reverse the transform that we made for reversability reasons.
2048                 return strtr( $result, array( "&#x0" => "&#x" ) );
2049         }
2050
2051         function noCreatePermission() {
2052                 global $wgOut;
2053                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2054                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
2055         }
2056
2057         /**
2058          * If there are rows in the deletion log for this page, show them,
2059          * along with a nice little note for the user
2060          *
2061          * @param OutputPage $out
2062          */
2063         private function showDeletionLog( $out ) {
2064                 $title = $this->mArticle->getTitle();
2065                 $reader = new LogReader(
2066                         new FauxRequest(
2067                                 array(
2068                                         'page' => $title->getPrefixedText(),
2069                                         'type' => 'delete',
2070                                         )
2071                         )
2072                 );
2073                 if( $reader->hasRows() ) {
2074                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2075                         $out->addWikiText( wfMsg( 'recreate-deleted-warn' ) );
2076                         $viewer = new LogViewer( $reader );
2077                         $viewer->showList( $out );
2078                         $out->addHtml( '</div>' );
2079                 }
2080         }
2081
2082 }
2083
2084