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         const AS_SUCCESS_UPDATE                         = 200;
  14         const AS_SUCCESS_NEW_ARTICLE            = 201;
  15         const AS_HOOK_ERROR                                     = 210;
  16         const AS_FILTERING                                      = 211;
  17         const AS_HOOK_ERROR_EXPECTED            = 212;
  18         const AS_BLOCKED_PAGE_FOR_USER          = 215;
  19         const AS_CONTENT_TOO_BIG                        = 216;
  20         const AS_USER_CANNOT_EDIT                       = 217;
  21         const AS_READ_ONLY_PAGE_ANON            = 218;
  22         const AS_READ_ONLY_PAGE_LOGGED          = 219;
  23         const AS_READ_ONLY_PAGE                         = 220;
  24         const AS_RATE_LIMITED                           = 221;
  25         const AS_ARTICLE_WAS_DELETED            = 222;
  26         const AS_NO_CREATE_PERMISSION           = 223;
  27         const AS_BLANK_ARTICLE                          = 224;
  28         const AS_CONFLICT_DETECTED                      = 225;
  29         const AS_SUMMARY_NEEDED                         = 226;
  30         const AS_TEXTBOX_EMPTY                          = 228;
  31         const AS_MAX_ARTICLE_SIZE_EXCEDED       = 229;
  32         const AS_OK                                                     = 230;
  33         const AS_END                                            = 231;
  34         const AS_SPAM_ERROR                                     = 232;
  35
  36         var $mArticle;
  37         var $mTitle;
  38         var $mMetaData = '';
  39         var $isConflict = false;
  40         var $isCssJsSubpage = false;
  41         var $deletedSinceEdit = false;
  42         var $formtype;
  43         var $firsttime;
  44         var $lastDelete;
  45         var $mTokenOk = false;
  46         var $mTokenOkExceptSuffix = false;
  47         var $mTriedSave = false;
  48         var $tooBig = false;
  49         var $kblength = false;
  50         var $missingComment = false;
  51         var $missingSummary = false;
  52         var $allowBlankSummary = false;
  53         var $autoSumm = '';
  54         var $hookError = '';
  55         var $mPreviewTemplates;
  56
  57         # Form values
  58         var $save = false, $preview = false, $diff = false;
  59         var $minoredit = false, $watchthis = false, $recreate = false;
  60         var $textbox1 = '', $textbox2 = '', $summary = '';
  61         var $edittime = '', $section = '', $starttime = '';
  62         var $oldid = 0, $editintro = '', $scrolltop = null;
  63
  64         # Placeholders for text injection by hooks (must be HTML)
  65         # extensions should take care to _append_ to the present value
  66         public $editFormPageTop; // Before even the preview
  67         public $editFormTextTop;
  68         public $editFormTextAfterWarn;
  69         public $editFormTextAfterTools;
  70         public $editFormTextBottom;
  71
  72         /**
  73          * @todo document
  74          * @param $article
  75          */
  76         function EditPage( $article ) {
  77                 $this->mArticle =& $article;
  78                 global $wgTitle;
  79                 $this->mTitle =& $wgTitle;
  80
  81                 # Placeholders for text injection by hooks (empty per default)
  82                 $this->editFormPageTop =
  83                 $this->editFormTextTop =
  84                 $this->editFormTextAfterWarn =
  85                 $this->editFormTextAfterTools =
  86                 $this->editFormTextBottom = "";
  87         }
  88
  89         /**
  90          * Fetch initial editing page content.
  91          */
  92         private function getContent( $def_text = '' ) {
  93                 global $wgOut, $wgRequest, $wgParser;
  94
  95                 # Get variables from query string :P
  96                 $section = $wgRequest->getVal( 'section' );
  97                 $preload = $wgRequest->getVal( 'preload' );
  98                 $undoafter = $wgRequest->getVal( 'undoafter' );
  99                 $undo = $wgRequest->getVal( 'undo' );
 100
 101                 wfProfileIn( __METHOD__ );
 102
 103                 $text = '';
 104                 if( !$this->mTitle->exists() ) {
 105                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 106                                 # If this is a system message, get the default text.
 107                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
 108                         } else {
 109                                 # If requested, preload some text.
 110                                 $text = $this->getPreloadedText( $preload );
 111                         }
 112                         # We used to put MediaWiki:Newarticletext here if
 113                         # $text was empty at this point.
 114                         # This is now shown above the edit box instead.
 115                 } else {
 116                         // FIXME: may be better to use Revision class directly
 117                         // But don't mess with it just yet. Article knows how to
 118                         // fetch the page record from the high-priority server,
 119                         // which is needed to guarantee we don't pick up lagged
 120                         // information.
 121
 122                         $text = $this->mArticle->getContent();
 123
 124                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 125                                 # If they got undoafter and undo round the wrong way, switch them
 126                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 127                         }
 128
 129                         if ( $undo > 0 && $undo > $undoafter ) {
 130                                 # Undoing a specific edit overrides section editing; section-editing
 131                                 # doesn't work with undoing.
 132                                 if ( $undoafter ) {
 133                                         $undorev = Revision::newFromId($undo);
 134                                         $oldrev = Revision::newFromId($undoafter);
 135                                 } else {
 136                                         $undorev = Revision::newFromId($undo);
 137                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 138                                 }
 139
 140                                 #Sanity check, make sure it's the right page.
 141                                 # Otherwise, $text will be left as-is.
 142                                 if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
 143                                         $undorev_text = $undorev->getText();
 144                                         $oldrev_text = $oldrev->getText();
 145                                         $currev_text = $text;
 146
 147                                         #No use doing a merge if it's just a straight revert.
 148                                         if ( $currev_text != $undorev_text ) {
 149                                                 $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
 150                                         } else {
 151                                                 $text = $oldrev_text;
 152                                                 $result = true;
 153                                         }
 154                                 } else {
 155                                         // Failed basic sanity checks.
 156                                         // Older revisions may have been removed since the link
 157                                         // was created, or we may simply have got bogus input.
 158                                         $result = false;
 159                                 }
 160
 161                                 if( $result ) {
 162                                         # Inform the user of our success and set an automatic edit summary
 163                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 164                                         $firstrev = $oldrev->getNext();
 165                                         # If we just undid one rev, use an autosummary
 166                                         if ( $firstrev->mId == $undo ) {
 167                                                 $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 168                                         }
 169                                         $this->formtype = 'diff';
 170                                 } else {
 171                                         # Warn the user that something went wrong
 172                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 173                                 }
 174                         } else if( $section != '' ) {
 175                                 if( $section == 'new' ) {
 176                                         $text = $this->getPreloadedText( $preload );
 177                                 } else {
 178                                         $text = $wgParser->getSection( $text, $section, $def_text );
 179                                 }
 180                         }
 181                 }
 182
 183                 wfProfileOut( __METHOD__ );
 184                 return $text;
 185         }
 186
 187         /**
 188          * Get the contents of a page from its title and remove includeonly tags
 189          *
 190          * @param $preload String: the title of the page.
 191          * @return string The contents of the page.
 192          */
 193         private function getPreloadedText($preload) {
 194                 if ( $preload === '' )
 195                         return '';
 196                 else {
 197                         $preloadTitle = Title::newFromText( $preload );
 198                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 199                                 $rev=Revision::newFromTitle($preloadTitle);
 200                                 if ( is_object( $rev ) ) {
 201                                         $text = $rev->getText();
 202                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 203                                         // its own mini-parser! -ævar
 204                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 205                                         return $text;
 206                                 } else
 207                                         return '';
 208                         }
 209                 }
 210         }
 211
 212         /**
 213          * This is the function that extracts metadata from the article body on the first view.
 214          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 215          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 216          */
 217         function extractMetaDataFromArticle () {
 218                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 219                 $this->mMetaData = '' ;
 220                 if ( !$wgUseMetadataEdit ) return ;
 221                 if ( $wgMetadataWhitelist == '' ) return ;
 222                 $s = '' ;
 223                 $t = $this->getContent();
 224
 225                 # MISSING : <nowiki> filtering
 226
 227                 # Categories and language links
 228                 $t = explode ( "\n" , $t ) ;
 229                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 230                 $cat = $ll = array() ;
 231                 foreach ( $t AS $key => $x )
 232                 {
 233                         $y = trim ( strtolower ( $x ) ) ;
 234                         while ( substr ( $y , 0 , 2 ) == '[[' )
 235                         {
 236                                 $y = explode ( ']]' , trim ( $x ) ) ;
 237                                 $first = array_shift ( $y ) ;
 238                                 $first = explode ( ':' , $first ) ;
 239                                 $ns = array_shift ( $first ) ;
 240                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 241                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 242                                 {
 243                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 244                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 245                                         else $ll[] = $add ;
 246                                         $x = implode ( ']]' , $y ) ;
 247                                         $t[$key] = $x ;
 248                                         $y = trim ( strtolower ( $x ) ) ;
 249                                 }
 250                         }
 251                 }
 252                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 253                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 254                 $t = implode ( "\n" , $t ) ;
 255
 256                 # Load whitelist
 257                 $sat = array () ; # stand-alone-templates; must be lowercase
 258                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 259                 $wl_article = new Article ( $wl_title ) ;
 260                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 261                 foreach ( $wl AS $x )
 262                 {
 263                         $isentry = false ;
 264                         $x = trim ( $x ) ;
 265                         while ( substr ( $x , 0 , 1 ) == '*' )
 266                         {
 267                                 $isentry = true ;
 268                                 $x = trim ( substr ( $x , 1 ) ) ;
 269                         }
 270                         if ( $isentry )
 271                         {
 272                                 $sat[] = strtolower ( $x ) ;
 273                         }
 274
 275                 }
 276
 277                 # Templates, but only some
 278                 $t = explode ( '{{' , $t ) ;
 279                 $tl = array () ;
 280                 foreach ( $t AS $key => $x )
 281                 {
 282                         $y = explode ( '}}' , $x , 2 ) ;
 283                         if ( count ( $y ) == 2 )
 284                         {
 285                                 $z = $y[0] ;
 286                                 $z = explode ( '|' , $z ) ;
 287                                 $tn = array_shift ( $z ) ;
 288                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 289                                 {
 290                                         $tl[] = '{{' . $y[0] . '}}' ;
 291                                         $t[$key] = $y[1] ;
 292                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 293                                 }
 294                                 else $t[$key] = '{{' . $x ;
 295                         }
 296                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 297                         else $t[$key] = $x ;
 298                 }
 299                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 300                 $t = implode ( '' , $t ) ;
 301
 302                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 303                 $this->mArticle->mContent = $t ;
 304                 $this->mMetaData = $s ;
 305         }
 306
 307         function submit() {
 308                 $this->edit();
 309         }
 310
 311         /**
 312          * This is the function that gets called for "action=edit". It
 313          * sets up various member variables, then passes execution to
 314          * another function, usually showEditForm()
 315          *
 316          * The edit form is self-submitting, so that when things like
 317          * preview and edit conflicts occur, we get the same form back
 318          * with the extra stuff added.  Only when the final submission
 319          * is made and all is well do we actually save and redirect to
 320          * the newly-edited page.
 321          */
 322         function edit() {
 323                 global $wgOut, $wgUser, $wgRequest, $wgTitle;
 324
 325                 if ( ! wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 326                         return;
 327
 328                 $fname = 'EditPage::edit';
 329                 wfProfileIn( $fname );
 330                 wfDebug( "$fname: enter\n" );
 331
 332                 // this is not an article
 333                 $wgOut->setArticleFlag(false);
 334
 335                 $this->importFormData( $wgRequest );
 336                 $this->firsttime = false;
 337
 338                 if( $this->live ) {
 339                         $this->livePreview();
 340                         wfProfileOut( $fname );
 341                         return;
 342                 }
 343
 344                 $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
 345                 if( !$this->mTitle->exists() )
 346                         $permErrors += array_diff( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors );
 347
 348                 # Ignore some permissions errors.
 349                 $remove = array();
 350                 foreach( $permErrors as $error ) {
 351                         if ($this->preview || $this->diff &&
 352                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 353                         {
 354                                 // Don't worry about blocks when previewing/diffing
 355                                 $remove[] = $error;
 356                         }
 357
 358                         if ($error[0] == 'readonlytext')
 359                         {
 360                                 if ($this->edit) {
 361                                         $this->formtype = 'preview';
 362                                 } elseif ($this->save || $this->preview || $this->diff) {
 363                                         $remove[] = $error;
 364                                 }
 365                         }
 366                 }
 367                 # array_diff returns elements in $permErrors that are not in $remove.
 368                 $permErrors = array_diff( $permErrors, $remove );
 369
 370                 if ( !empty($permErrors) )
 371                 {
 372                         wfDebug( "$fname: User can't edit\n" );
 373                         $wgOut->readOnlyPage( $this->getContent(), true, $permErrors );
 374                         wfProfileOut( $fname );
 375                         return;
 376                 } else {
 377                         if ( $this->save ) {
 378                                 $this->formtype = 'save';
 379                         } else if ( $this->preview ) {
 380                                 $this->formtype = 'preview';
 381                         } else if ( $this->diff ) {
 382                                 $this->formtype = 'diff';
 383                         } else { # First time through
 384                                 $this->firsttime = true;
 385                                 if( $this->previewOnOpen() ) {
 386                                         $this->formtype = 'preview';
 387                                 } else {
 388                                         $this->extractMetaDataFromArticle () ;
 389                                         $this->formtype = 'initial';
 390                                 }
 391                         }
 392                 }
 393
 394                 wfProfileIn( "$fname-business-end" );
 395
 396                 $this->isConflict = false;
 397                 // css / js subpages of user pages get a special treatment
 398                 $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
 399                 $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
 400
 401                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 402                  * no matter it's current state
 403                  */
 404                 $this->deletedSinceEdit = false;
 405                 if ( $this->edittime != '' ) {
 406                         /* Note that we rely on logging table, which hasn't been always there,
 407                          * but that doesn't matter, because this only applies to brand new
 408                          * deletes. This is done on every preview and save request. Move it further down
 409                          * to only perform it on saves
 410                          */
 411                         if ( $this->mTitle->isDeleted() ) {
 412                                 $this->lastDelete = $this->getLastDelete();
 413                                 if ( !is_null($this->lastDelete) ) {
 414                                         $deletetime = $this->lastDelete->log_timestamp;
 415                                         if ( ($deletetime - $this->starttime) > 0 ) {
 416                                                 $this->deletedSinceEdit = true;
 417                                         }
 418                                 }
 419                         }
 420                 }
 421
 422                 # Show applicable editing introductions
 423                 if( $this->formtype == 'initial' || $this->firsttime )
 424                         $this->showIntro();
 425
 426                 if( $this->mTitle->isTalkPage() ) {
 427                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 428                 }
 429
 430                 # Attempt submission here.  This will check for edit conflicts,
 431                 # and redundantly check for locked database, blocked IPs, etc.
 432                 # that edit() already checked just in case someone tries to sneak
 433                 # in the back door with a hand-edited submission URL.
 434
 435                 if ( 'save' == $this->formtype ) {
 436                         if ( !$this->attemptSave() ) {
 437                                 wfProfileOut( "$fname-business-end" );
 438                                 wfProfileOut( $fname );
 439                                 return;
 440                         }
 441                 }
 442
 443                 # First time through: get contents, set time for conflict
 444                 # checking, etc.
 445                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 446                         if ($this->initialiseForm() === false) {
 447                                 $this->noSuchSectionPage();
 448                                 wfProfileOut( "$fname-business-end" );
 449                                 wfProfileOut( $fname );
 450                                 return;
 451                         }
 452                         if( !$this->mTitle->getArticleId() )
 453                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 454                 }
 455
 456                 $this->showEditForm();
 457                 wfProfileOut( "$fname-business-end" );
 458                 wfProfileOut( $fname );
 459         }
 460
 461         /**
 462          * Should we show a preview when the edit form is first shown?
 463          *
 464          * @return bool
 465          */
 466         private function previewOnOpen() {
 467                 global $wgRequest, $wgUser;
 468                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 469                         // Explicit override from request
 470                         return true;
 471                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 472                         // Explicit override from request
 473                         return false;
 474                 } elseif( $this->section == 'new' ) {
 475                         // Nothing *to* preview for new sections
 476                         return false;
 477                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 478                         // Standard preference behaviour
 479                         return true;
 480                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 481                         // Categories are special
 482                         return true;
 483                 } else {
 484                         return false;
 485                 }
 486         }
 487
 488         /**
 489          * @todo document
 490          * @param $request
 491          */
 492         function importFormData( &$request ) {
 493                 global $wgLang, $wgUser;
 494                 $fname = 'EditPage::importFormData';
 495                 wfProfileIn( $fname );
 496
 497                 if( $request->wasPosted() ) {
 498                         # These fields need to be checked for encoding.
 499                         # Also remove trailing whitespace, but don't remove _initial_
 500                         # whitespace from the text boxes. This may be significant formatting.
 501                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 502                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 503                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 504                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 505                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 506
 507                         $this->edittime = $request->getVal( 'wpEdittime' );
 508                         $this->starttime = $request->getVal( 'wpStarttime' );
 509
 510                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 511
 512                         if( is_null( $this->edittime ) ) {
 513                                 # If the form is incomplete, force to preview.
 514                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 515                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 516                                 $this->preview  = true;
 517                         } else {
 518                                 /* Fallback for live preview */
 519                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 520                                 $this->diff = $request->getCheck( 'wpDiff' );
 521
 522                                 // Remember whether a save was requested, so we can indicate
 523                                 // if we forced preview due to session failure.
 524                                 $this->mTriedSave = !$this->preview;
 525
 526                                 if ( $this->tokenOk( $request ) ) {
 527                                         # Some browsers will not report any submit button
 528                                         # if the user hits enter in the comment box.
 529                                         # The unmarked state will be assumed to be a save,
 530                                         # if the form seems otherwise complete.
 531                                         wfDebug( "$fname: Passed token check.\n" );
 532                                 } else if ( $this->diff ) {
 533                                         # Failed token check, but only requested "Show Changes".
 534                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 535                                 } else {
 536                                         # Page might be a hack attempt posted from
 537                                         # an external site. Preview instead of saving.
 538                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 539                                         $this->preview = true;
 540                                 }
 541                         }
 542                         $this->save    = ! ( $this->preview OR $this->diff );
 543                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 544                                 $this->edittime = null;
 545                         }
 546
 547                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 548                                 $this->starttime = null;
 549                         }
 550
 551                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 552
 553                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 554                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 555
 556                         # Don't force edit summaries when a user is editing their own user or talk page
 557                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 558                                 $this->allowBlankSummary = true;
 559                         } else {
 560                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 561                         }
 562
 563                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 564                 } else {
 565                         # Not a posted form? Start with nothing.
 566                         wfDebug( "$fname: Not a posted form.\n" );
 567                         $this->textbox1  = '';
 568                         $this->textbox2  = '';
 569                         $this->mMetaData = '';
 570                         $this->summary   = '';
 571                         $this->edittime  = '';
 572                         $this->starttime = wfTimestampNow();
 573                         $this->edit      = false;
 574                         $this->preview   = false;
 575                         $this->save      = false;
 576                         $this->diff      = false;
 577                         $this->minoredit = false;
 578                         $this->watchthis = false;
 579                         $this->recreate  = false;
 580                 }
 581
 582                 $this->oldid = $request->getInt( 'oldid' );
 583
 584                 # Section edit can come from either the form or a link
 585                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 586
 587                 $this->live = $request->getCheck( 'live' );
 588                 $this->editintro = $request->getText( 'editintro' );
 589
 590                 wfProfileOut( $fname );
 591         }
 592
 593         /**
 594          * Make sure the form isn't faking a user's credentials.
 595          *
 596          * @param $request WebRequest
 597          * @return bool
 598          * @private
 599          */
 600         function tokenOk( &$request ) {
 601                 global $wgUser;
 602                 $token = $request->getVal( 'wpEditToken' );
 603                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 604                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 605                 return $this->mTokenOk;
 606         }
 607
 608         /**
 609          * Show all applicable editing introductions
 610          */
 611         private function showIntro() {
 612                 global $wgOut, $wgUser;
 613                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 614                         if( $wgUser->isLoggedIn() ) {
 615                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 616                         } else {
 617                                 $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
 618                         }
 619                         $this->showDeletionLog( $wgOut );
 620                 }
 621         }
 622
 623         /**
 624          * Attempt to show a custom editing introduction, if supplied
 625          *
 626          * @return bool
 627          */
 628         private function showCustomIntro() {
 629                 if( $this->editintro ) {
 630                         $title = Title::newFromText( $this->editintro );
 631                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 632                                 global $wgOut;
 633                                 $revision = Revision::newFromTitle( $title );
 634                                 $wgOut->addSecondaryWikiText( $revision->getText() );
 635                                 return true;
 636                         } else {
 637                                 return false;
 638                         }
 639                 } else {
 640                         return false;
 641                 }
 642         }
 643
 644         /**
 645          * Attempt submission (no UI)
 646          * @return one of the constants describing the result
 647          */
 648         function internalAttemptSave( &$result ) {
 649                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 650                 global $wgMaxArticleSize;
 651
 652                 $fname = 'EditPage::attemptSave';
 653                 wfProfileIn( $fname );
 654                 wfProfileIn( "$fname-checks" );
 655
 656                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 657                 {
 658                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 659                         return self::AS_HOOK_ERROR;
 660                 }
 661
 662                 # Reintegrate metadata
 663                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 664                 $this->mMetaData = '' ;
 665
 666                 # Check for spam
 667                 $matches = array();
 668                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 669                         $result['spam'] = $matches[0];
 670                         wfProfileOut( "$fname-checks" );
 671                         wfProfileOut( $fname );
 672                         return self::AS_SPAM_ERROR;
 673                 }
 674                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 675                         # Error messages or other handling should be performed by the filter function
 676                         wfProfileOut( $fname );
 677                         wfProfileOut( "$fname-checks" );
 678                         return self::AS_FILTERING;
 679                 }
 680                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 681                         # Error messages etc. could be handled within the hook...
 682                         wfProfileOut( $fname );
 683                         wfProfileOut( "$fname-checks" );
 684                         return self::AS_HOOK_ERROR;
 685                 } elseif( $this->hookError != '' ) {
 686                         # ...or the hook could be expecting us to produce an error
 687                         wfProfileOut( "$fname-checks " );
 688                         wfProfileOut( $fname );
 689                         return self::AS_HOOK_ERROR_EXPECTED;
 690                 }
 691                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 692                         # Check block state against master, thus 'false'.
 693                         wfProfileOut( "$fname-checks" );
 694                         wfProfileOut( $fname );
 695                         return self::AS_BLOCKED_PAGE_FOR_USER;
 696                 }
 697                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 698                 if ( $this->kblength > $wgMaxArticleSize ) {
 699                         // Error will be displayed by showEditForm()
 700                         $this->tooBig = true;
 701                         wfProfileOut( "$fname-checks" );
 702                         wfProfileOut( $fname );
 703                         return self::AS_CONTENT_TOO_BIG;
 704                 }
 705
 706                 if ( !$wgUser->isAllowed('edit') ) {
 707                         if ( $wgUser->isAnon() ) {
 708                                 wfProfileOut( "$fname-checks" );
 709                                 wfProfileOut( $fname );
 710                                 return self::AS_READ_ONLY_PAGE_ANON;
 711                         }
 712                         else {
 713                                 wfProfileOut( "$fname-checks" );
 714                                 wfProfileOut( $fname );
 715                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 716                         }
 717                 }
 718
 719                 if ( wfReadOnly() ) {
 720                         wfProfileOut( "$fname-checks" );
 721                         wfProfileOut( $fname );
 722                         return self::AS_READ_ONLY_PAGE;
 723                 }
 724                 if ( $wgUser->pingLimiter() ) {
 725                         wfProfileOut( "$fname-checks" );
 726                         wfProfileOut( $fname );
 727                         return self::AS_RATE_LIMITED;
 728                 }
 729
 730                 # If the article has been deleted while editing, don't save it without
 731                 # confirmation
 732                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 733                         wfProfileOut( "$fname-checks" );
 734                         wfProfileOut( $fname );
 735                         return self::AS_ARTICLE_WAS_DELETED;
 736                 }
 737
 738                 wfProfileOut( "$fname-checks" );
 739
 740                 # If article is new, insert it.
 741                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 742                 if ( 0 == $aid ) {
 743
 744                         // Late check for create permission, just in case *PARANOIA*
 745                         if ( !$this->mTitle->userCan( 'create' ) ) {
 746                                 wfDebug( "$fname: no create permission\n" );
 747                                 wfProfileOut( $fname );
 748                                 return self::AS_NO_CREATE_PERMISSION;
 749                         }
 750
 751                         # Don't save a new article if it's blank.
 752                         if ( ( '' == $this->textbox1 ) ) {
 753                                         wfProfileOut( $fname );
 754                                         return self::AS_BLANK_ARTICLE;
 755                         }
 756
 757                         $isComment=($this->section=='new');
 758                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 759                                 $this->minoredit, $this->watchthis, false, $isComment);
 760
 761                         wfProfileOut( $fname );
 762                         return self::AS_SUCCESS_NEW_ARTICLE;
 763                 }
 764
 765                 # Article exists. Check for edit conflict.
 766
 767                 $this->mArticle->clear(); # Force reload of dates, etc.
 768                 $this->mArticle->forUpdate( true ); # Lock the article
 769
 770                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 771
 772                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 773                         $this->isConflict = true;
 774                         if( $this->section == 'new' ) {
 775                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 776                                         $this->mArticle->getComment() == $this->summary ) {
 777                                         // Probably a duplicate submission of a new comment.
 778                                         // This can happen when squid resends a request after
 779                                         // a timeout but the first one actually went through.
 780                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 781                                 } else {
 782                                         // New comment; suppress conflict.
 783                                         $this->isConflict = false;
 784                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 785                                 }
 786                         }
 787                 }
 788                 $userid = $wgUser->getID();
 789
 790                 if ( $this->isConflict) {
 791                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 792                                 $this->mArticle->getTimestamp() . "')\n" );
 793                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 794                 }
 795                 else {
 796                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 797                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 798                 }
 799                 if( is_null( $text ) ) {
 800                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 801                         $this->isConflict = true;
 802                         $text = $this->textbox1;
 803                 }
 804
 805                 # Suppress edit conflict with self, except for section edits where merging is required.
 806                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 807                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 808                         $this->isConflict = false;
 809                 } else {
 810                         # switch from section editing to normal editing in edit conflict
 811                         if($this->isConflict) {
 812                                 # Attempt merge
 813                                 if( $this->mergeChangesInto( $text ) ){
 814                                         // Successful merge! Maybe we should tell the user the good news?
 815                                         $this->isConflict = false;
 816                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 817                                 } else {
 818                                         $this->section = '';
 819                                         $this->textbox1 = $text;
 820                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 821                                 }
 822                         }
 823                 }
 824
 825                 if ( $this->isConflict ) {
 826                         wfProfileOut( $fname );
 827                         return self::AS_CONFLICT_DETECTED;
 828                 }
 829
 830                 $oldtext = $this->mArticle->getContent();
 831
 832                 # Handle the user preference to force summaries here, but not for null edits
 833                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 834                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 835                         if( md5( $this->summary ) == $this->autoSumm ) {
 836                                 $this->missingSummary = true;
 837                                 wfProfileOut( $fname );
 838                                 return self::AS_SUMMARY_NEEDED;
 839                         }
 840                 }
 841
 842                 #And a similar thing for new sections
 843                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 844                         if (trim($this->summary) == '') {
 845                                 $this->missingSummary = true;
 846                                 wfProfileOut( $fname );
 847                                 return self::AS_SUMMARY_NEEDED;
 848                         }
 849                 }
 850
 851                 # All's well
 852                 wfProfileIn( "$fname-sectionanchor" );
 853                 $sectionanchor = '';
 854                 if( $this->section == 'new' ) {
 855                         if ( $this->textbox1 == '' ) {
 856                                 $this->missingComment = true;
 857                                 return self::AS_TEXTBOX_EMPTY;
 858                         }
 859                         if( $this->summary != '' ) {
 860                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 861                                 # This is a new section, so create a link to the new section
 862                                 # in the revision summary.
 863                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 864                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 865                         }
 866                 } elseif( $this->section != '' ) {
 867                         # Try to get a section anchor from the section source, redirect to edited section if header found
 868                         # XXX: might be better to integrate this into Article::replaceSection
 869                         # for duplicate heading checking and maybe parsing
 870                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 871                         # we can't deal with anchors, includes, html etc in the header for now,
 872                         # headline would need to be parsed to improve this
 873                         if($hasmatch and strlen($matches[2]) > 0) {
 874                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 875                         }
 876                 }
 877                 wfProfileOut( "$fname-sectionanchor" );
 878
 879                 // Save errors may fall down to the edit form, but we've now
 880                 // merged the section into full text. Clear the section field
 881                 // so that later submission of conflict forms won't try to
 882                 // replace that into a duplicated mess.
 883                 $this->textbox1 = $text;
 884                 $this->section = '';
 885
 886                 // Check for length errors again now that the section is merged in
 887                 $this->kblength = (int)(strlen( $text ) / 1024);
 888                 if ( $this->kblength > $wgMaxArticleSize ) {
 889                         $this->tooBig = true;
 890                         wfProfileOut( $fname );
 891                         return self::AS_MAX_ARTICLE_SIZE_EXCEDED;
 892                 }
 893
 894                 # update the article here
 895                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 896                         $this->watchthis, '', $sectionanchor ) ) {
 897                         wfProfileOut( $fname );
 898                         return self::AS_SUCCESS_UPDATE;
 899                 } else {
 900                         $this->isConflict = true;
 901                 }
 902                 wfProfileOut( $fname );
 903                 return self::AS_END;
 904         }
 905
 906         /**
 907          * Initialise form fields in the object
 908          * Called on the first invocation, e.g. when a user clicks an edit link
 909          */
 910         function initialiseForm() {
 911                 $this->edittime = $this->mArticle->getTimestamp();
 912                 $this->summary = '';
 913                 $this->textbox1 = $this->getContent(false);
 914                 if ($this->textbox1 === false) return false;
 915
 916                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 917                         $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
 918                 wfProxyCheck();
 919                 return true;
 920         }
 921
 922         /**
 923          * Send the edit form and related headers to $wgOut
 924          * @param $formCallback Optional callable that takes an OutputPage
 925          *                      parameter; will be called during form output
 926          *                      near the top, for captchas and the like.
 927          */
 928         function showEditForm( $formCallback=null ) {
 929                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 930
 931                 $fname = 'EditPage::showEditForm';
 932                 wfProfileIn( $fname );
 933
 934                 $sk = $wgUser->getSkin();
 935
 936                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 937
 938                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 939
 940                 # Enabled article-related sidebar, toplinks, etc.
 941                 $wgOut->setArticleRelated( true );
 942
 943                 if ( $this->formtype == 'preview' ) {
 944                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
 945                 }
 946
 947                 if ( $this->isConflict ) {
 948                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 949                         $wgOut->setPageTitle( $s );
 950                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 951
 952                         $this->textbox2 = $this->textbox1;
 953                         $this->textbox1 = $this->getContent();
 954                         $this->edittime = $this->mArticle->getTimestamp();
 955                 } else {
 956
 957                         if( $this->section != '' ) {
 958                                 if( $this->section == 'new' ) {
 959                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 960                                 } else {
 961                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 962                                         $matches = array();
 963                                         if( !$this->summary && !$this->preview && !$this->diff ) {
 964                                                 preg_match( "/^(=+)(.+)\\1/mi",
 965                                                         $this->textbox1,
 966                                                         $matches );
 967                                                 if( !empty( $matches[2] ) ) {
 968                                                         global $wgParser;
 969                                                         $this->summary = "/* " .
 970                                                                 $wgParser->stripSectionName(trim($matches[2])) .
 971                                                                 " */ ";
 972                                                 }
 973                                         }
 974                                 }
 975                         } else {
 976                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 977                         }
 978                         $wgOut->setPageTitle( $s );
 979
 980                         if ( $this->missingComment ) {
 981                                 $wgOut->addWikiText( '<div id="mw-missingcommenttext">' . wfMsg( 'missingcommenttext' ) . '</div>' );
 982                         }
 983
 984                         if( $this->missingSummary && $this->section != 'new' ) {
 985                                 $wgOut->addWikiText( '<div id="mw-missingsummary">' . wfMsg( 'missingsummary' ) . '</div>' );
 986                         }
 987
 988                         if( $this->missingSummary && $this->section == 'new' ) {
 989                                 $wgOut->addWikiText( '<div id="mw-missingcommentheader">' . wfMsg( 'missingcommentheader' ) . '</div>' );
 990                         }
 991
 992                         if( !$this->hookError == '' ) {
 993                                 $wgOut->addWikiText( $this->hookError );
 994                         }
 995
 996                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 997                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 998                         }
 999                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1000                         // Let sysop know that this will make private content public if saved
1001                                 if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1002                                         $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
1003                                 }
1004                                 if( !$this->mArticle->mRevision->isCurrent() ) {
1005                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1006                                         $wgOut->addWikiText( wfMsg( 'editingold' ) );
1007                                 }
1008                         }
1009                 }
1010
1011                 if( wfReadOnly() ) {
1012                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
1013                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1014                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
1015                 } else {
1016                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1017                                 # Check the skin exists
1018                                 if( $this->isValidCssJsSubpage ) {
1019                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
1020                                 } else {
1021                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
1022                                 }
1023                         }
1024                 }
1025
1026                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1027                         # Show a warning if editing an interface message
1028                         $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
1029                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1030                         # Is the title semi-protected?
1031                         if( $this->mTitle->isSemiProtected() ) {
1032                                 $notice = wfMsg( 'semiprotectedpagewarning' );
1033                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
1034                                         $notice = '';
1035                         } else {
1036                         # Then it must be protected based on static groups (regular)
1037                                 $notice = wfMsg( 'protectedpagewarning' );
1038                         }
1039                         $wgOut->addWikiText( $notice );
1040                 }
1041                 if ( $this->mTitle->isCascadeProtected() ) {
1042                         # Is this page under cascading protection from some source pages?
1043                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1044                         if ( count($cascadeSources) > 0 ) {
1045                                 # Explain, and list the titles responsible
1046                                 $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
1047                                 foreach( $cascadeSources as $page ) {
1048                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1049                                 }
1050                         }
1051                         $wgOut->addWikiText( $notice );
1052                 }
1053
1054                 if ( $this->kblength === false ) {
1055                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1056                 }
1057                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1058                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
1059                 } elseif( $this->kblength > 29 ) {
1060                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
1061                 }
1062
1063                 #need to parse the preview early so that we know which templates are used,
1064                 #otherwise users with "show preview after edit box" will get a blank list
1065                 if ( $this->formtype == 'preview' ) {
1066                         $previewOutput = $this->getPreviewText();
1067                 }
1068
1069                 $rows = $wgUser->getIntOption( 'rows' );
1070                 $cols = $wgUser->getIntOption( 'cols' );
1071
1072                 $ew = $wgUser->getOption( 'editwidth' );
1073                 if ( $ew ) $ew = " style=\"width:100%\"";
1074                 else $ew = '';
1075
1076                 $q = 'action=submit';
1077                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1078                 $action = $this->mTitle->escapeLocalURL( $q );
1079
1080                 $summary = wfMsg('summary');
1081                 $subject = wfMsg('subject');
1082
1083                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
1084                                 wfMsgExt('cancel', array('parseinline')) );
1085                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1086                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1087                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1088                         htmlspecialchars( wfMsg( 'newwindow' ) );
1089
1090                 global $wgRightsText;
1091                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
1092                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
1093                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1094                                 $wgRightsText ) . "\n</div>";
1095
1096                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1097                         # prepare toolbar for edit buttons
1098                         $toolbar = $this->getEditToolbar();
1099                 } else {
1100                         $toolbar = '';
1101                 }
1102
1103                 // activate checkboxes if user wants them to be always active
1104                 if( !$this->preview && !$this->diff ) {
1105                         # Sort out the "watch" checkbox
1106                         if( $wgUser->getOption( 'watchdefault' ) ) {
1107                                 # Watch all edits
1108                                 $this->watchthis = true;
1109                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1110                                 # Watch creations
1111                                 $this->watchthis = true;
1112                         } elseif( $this->mTitle->userIsWatching() ) {
1113                                 # Already watched
1114                                 $this->watchthis = true;
1115                         }
1116
1117                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1118                 }
1119
1120                 $wgOut->addHTML( $this->editFormPageTop );
1121
1122                 if ( $wgUser->getOption( 'previewontop' ) ) {
1123
1124                         if ( 'preview' == $this->formtype ) {
1125                                 $this->showPreview( $previewOutput );
1126                         } else {
1127                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1128                         }
1129
1130                         if ( 'diff' == $this->formtype ) {
1131                                 $this->showDiff();
1132                         }
1133                 }
1134
1135
1136                 $wgOut->addHTML( $this->editFormTextTop );
1137
1138                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1139                 # Otherwise, show a summary field at the bottom
1140                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1141                 if( $this->section == 'new' ) {
1142                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1143                         $editsummary = '';
1144                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1145                         $summarypreview = '';
1146                 } else {
1147                         $commentsubject = '';
1148                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1149                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1150                         $subjectpreview = '';
1151                 }
1152
1153                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1154                 if( !$this->preview && !$this->diff ) {
1155                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1156                 }
1157                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1158                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1159
1160                 global $wgUseMetadataEdit ;
1161                 if ( $wgUseMetadataEdit ) {
1162                         $metadata = $this->mMetaData ;
1163                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1164                         $top = wfMsgWikiHtml( 'metadata_help' );
1165                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1166                 }
1167                 else $metadata = "" ;
1168
1169                 $hidden = '';
1170                 $recreate = '';
1171                 if ($this->deletedSinceEdit) {
1172                         if ( 'save' != $this->formtype ) {
1173                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
1174                         } else {
1175                                 // Hide the toolbar and edit area, use can click preview to get it back
1176                                 // Add an confirmation checkbox and explanation.
1177                                 $toolbar = '';
1178                                 $hidden = 'type="hidden" style="display:none;"';
1179                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1180                                 $recreate .=
1181                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1182                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1183                         }
1184                 }
1185
1186                 $tabindex = 2;
1187
1188                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1189                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1190
1191                 $checkboxhtml = implode( $checkboxes, "\n" );
1192
1193                 $buttons = $this->getEditButtons( $tabindex );
1194                 $buttonshtml = implode( $buttons, "\n" );
1195
1196                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1197                         ? '' : Xml::hidden( 'safemode', '1' );
1198
1199                 $wgOut->addHTML( <<<END
1200 {$toolbar}
1201 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1202 END
1203 );
1204
1205                 if( is_callable( $formCallback ) ) {
1206                         call_user_func_array( $formCallback, array( &$wgOut ) );
1207                 }
1208
1209                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1210
1211                 // Put these up at the top to ensure they aren't lost on early form submission
1212                 $wgOut->addHTML( "
1213 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1214 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1215 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1216 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1217
1218                 $wgOut->addHTML( <<<END
1219 $recreate
1220 {$commentsubject}
1221 {$subjectpreview}
1222 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1223 cols='{$cols}'{$ew} $hidden>
1224 END
1225 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1226 "
1227 </textarea>
1228                 " );
1229
1230                 $wgOut->addWikiText( $copywarn );
1231                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1232                 $wgOut->addHTML( "
1233 {$metadata}
1234 {$editsummary}
1235 {$summarypreview}
1236 {$checkboxhtml}
1237 {$safemodehtml}
1238 ");
1239
1240                 $wgOut->addHTML(
1241 "<div class='editButtons'>
1242 {$buttonshtml}
1243         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1244 </div><!-- editButtons -->
1245 </div><!-- editOptions -->");
1246
1247                 $wgOut->addHtml( '<div class="mw-editTools">' );
1248                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1249                 $wgOut->addHtml( '</div>' );
1250
1251                 $wgOut->addHTML( $this->editFormTextAfterTools );
1252
1253                 $wgOut->addHTML( "
1254 <div class='templatesUsed'>
1255 {$formattedtemplates}
1256 </div>
1257 " );
1258
1259                 /**
1260                  * To make it harder for someone to slip a user a page
1261                  * which submits an edit form to the wiki without their
1262                  * knowledge, a random token is associated with the login
1263                  * session. If it's not passed back with the submission,
1264                  * we won't save the page, or render user JavaScript and
1265                  * CSS previews.
1266                  *
1267                  * For anon editors, who may not have a session, we just
1268                  * include the constant suffix to prevent editing from
1269                  * broken text-mangling proxies.
1270                  */
1271                 $token = htmlspecialchars( $wgUser->editToken() );
1272                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1273
1274
1275                 # If a blank edit summary was previously provided, and the appropriate
1276                 # user preference is active, pass a hidden tag here. This will stop the
1277                 # user being bounced back more than once in the event that a summary
1278                 # is not required.
1279                 if( $this->missingSummary ) {
1280                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1281                 }
1282
1283                 # For a bit more sophisticated detection of blank summaries, hash the
1284                 # automatic one and pass that in a hidden field.
1285                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1286                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1287
1288                 if ( $this->isConflict ) {
1289                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1290
1291                         $de = new DifferenceEngine( $this->mTitle );
1292                         $de->setText( $this->textbox2, $this->textbox1 );
1293                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1294
1295                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1296                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1297                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1298                 }
1299                 $wgOut->addHTML( $this->editFormTextBottom );
1300                 $wgOut->addHTML( "</form>\n" );
1301                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1302
1303                         if ( $this->formtype == 'preview') {
1304                                 $this->showPreview( $previewOutput );
1305                         } else {
1306                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1307                         }
1308
1309                         if ( $this->formtype == 'diff') {
1310                                 $this->showDiff();
1311                         }
1312
1313                 }
1314
1315                 wfProfileOut( $fname );
1316         }
1317
1318         /**
1319          * Append preview output to $wgOut.
1320          * Includes category rendering if this is a category page.
1321          *
1322          * @param string $text The HTML to be output for the preview.
1323          */
1324         private function showPreview( $text ) {
1325                 global $wgOut;
1326
1327                 $wgOut->addHTML( '<div id="wikiPreview">' );
1328                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1329                         $this->mArticle->openShowCategory();
1330                 }
1331                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1332                 $wgOut->addHTML( $text );
1333                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1334                         $this->mArticle->closeShowCategory();
1335                 }
1336                 $wgOut->addHTML( '</div>' );
1337         }
1338
1339         /**
1340          * Live Preview lets us fetch rendered preview page content and
1341          * add it to the page without refreshing the whole page.
1342          * If not supported by the browser it will fall through to the normal form
1343          * submission method.
1344          *
1345          * This function outputs a script tag to support live preview, and
1346          * returns an onclick handler which should be added to the attributes
1347          * of the preview button
1348          */
1349         function doLivePreviewScript() {
1350                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1351                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1352                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1353                         '"></script>' . "\n" );
1354                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1355                 return "return !lpDoPreview(" .
1356                         "editform.wpTextbox1.value," .
1357                         '"' . $liveAction . '"' . ")";
1358         }
1359
1360         function getLastDelete() {
1361                 $dbr = wfGetDB( DB_SLAVE );
1362                 $fname = 'EditPage::getLastDelete';
1363                 $res = $dbr->select(
1364                         array( 'logging', 'user' ),
1365                         array( 'log_type',
1366                                'log_action',
1367                                'log_timestamp',
1368                                'log_user',
1369                                'log_namespace',
1370                                'log_title',
1371                                'log_comment',
1372                                'log_params',
1373                                'user_name', ),
1374                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1375                                'log_title' => $this->mTitle->getDBkey(),
1376                                'log_type' => 'delete',
1377                                'log_action' => 'delete',
1378                                'user_id=log_user' ),
1379                         $fname,
1380                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1381
1382                 if($dbr->numRows($res) == 1) {
1383                         while ( $x = $dbr->fetchObject ( $res ) )
1384                                 $data = $x;
1385                         $dbr->freeResult ( $res ) ;
1386                 } else {
1387                         $data = null;
1388                 }
1389                 return $data;
1390         }
1391
1392         /**
1393          * @todo document
1394          */
1395         function getPreviewText() {
1396                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1397
1398                 $fname = 'EditPage::getPreviewText';
1399                 wfProfileIn( $fname );
1400
1401                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1402                         if ( $this->mTokenOkExceptSuffix ) {
1403                                 $msg = 'token_suffix_mismatch';
1404                         } else {
1405                                 $msg = 'session_fail_preview';
1406                         }
1407                 } else {
1408                         $msg = 'previewnote';
1409                 }
1410                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1411                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1412                 if ( $this->isConflict ) {
1413                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1414                 }
1415
1416                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1417                 $parserOptions->setEditSection( false );
1418
1419                 global $wgRawHtml;
1420                 if( $wgRawHtml && !$this->mTokenOk ) {
1421                         // Could be an offsite preview attempt. This is very unsafe if
1422                         // HTML is enabled, as it could be an attack.
1423                         return $wgOut->parse( "<div class='previewnote'>" .
1424                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1425                 }
1426
1427                 # don't parse user css/js, show message about preview
1428                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1429
1430                 if ( $this->isCssJsSubpage ) {
1431                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1432                                 $previewtext = wfMsg('usercsspreview');
1433                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1434                                 $previewtext = wfMsg('userjspreview');
1435                         }
1436                         $parserOptions->setTidy(true);
1437                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1438                         $wgOut->addHTML( $parserOutput->mText );
1439                         wfProfileOut( $fname );
1440                         return $previewhead;
1441                 } else {
1442                         $toparse = $this->textbox1;
1443
1444                         # If we're adding a comment, we need to show the
1445                         # summary as the headline
1446                         if($this->section=="new" && $this->summary!="") {
1447                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1448                         }
1449
1450                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1451                         $parserOptions->setTidy(true);
1452                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1453                                         $wgTitle, $parserOptions );
1454
1455                         $previewHTML = $parserOutput->getText();
1456                         $wgOut->addParserOutputNoText( $parserOutput );
1457
1458                         # ParserOutput might have altered the page title, so reset it
1459                         $wgOut->setPageTitle( wfMsg( 'editing', $this->mTitle->getPrefixedText() ) );
1460
1461                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1462                                 foreach ( array_keys( $template ) as $dbk)
1463                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1464
1465                         wfProfileOut( $fname );
1466                         return $previewhead . $previewHTML;
1467                 }
1468         }
1469
1470         /**
1471          * Call the stock "user is blocked" page
1472          */
1473         function blockedPage() {
1474                 global $wgOut, $wgUser;
1475                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1476
1477                 # If the user made changes, preserve them when showing the markup
1478                 # (This happens when a user is blocked during edit, for instance)
1479                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1480                 if( $first ) {
1481                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1482                 } else {
1483                         $source = $this->textbox1;
1484                 }
1485
1486                 # Spit out the source or the user's modified version
1487                 if( $source !== false ) {
1488                         $rows = $wgUser->getOption( 'rows' );
1489                         $cols = $wgUser->getOption( 'cols' );
1490                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1491                         $wgOut->addHtml( '<hr />' );
1492                         $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
1493                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1494                 }
1495         }
1496
1497         /**
1498          * Produce the stock "please login to edit pages" page
1499          */
1500         function userNotLoggedInPage() {
1501                 global $wgUser, $wgOut;
1502                 $skin = $wgUser->getSkin();
1503
1504                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1505                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1506
1507                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1508                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1509                 $wgOut->setArticleRelated( false );
1510
1511                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1512                 $wgOut->returnToMain( false, $this->mTitle );
1513         }
1514
1515         /**
1516          * Creates a basic error page which informs the user that
1517          * they have attempted to edit a nonexistant section.
1518          */
1519         function noSuchSectionPage() {
1520                 global $wgOut;
1521
1522                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1523                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1524                 $wgOut->setArticleRelated( false );
1525
1526                 $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
1527                 $wgOut->returnToMain( false, $this->mTitle );
1528         }
1529
1530         /**
1531          * Produce the stock "your edit contains spam" page
1532          *
1533          * @param $match Text which triggered one or more filters
1534          */
1535         function spamPage( $match = false ) {
1536                 global $wgOut;
1537
1538                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1539                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1540                 $wgOut->setArticleRelated( false );
1541
1542                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1543                 if ( $match )
1544                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1545
1546                 $wgOut->returnToMain( false, $this->mTitle );
1547         }
1548
1549         /**
1550          * @private
1551          * @todo document
1552          */
1553         function mergeChangesInto( &$editText ){
1554                 $fname = 'EditPage::mergeChangesInto';
1555                 wfProfileIn( $fname );
1556
1557                 $db = wfGetDB( DB_MASTER );
1558
1559                 // This is the revision the editor started from
1560                 $baseRevision = Revision::loadFromTimestamp(
1561                         $db, $this->mArticle->mTitle, $this->edittime );
1562                 if( is_null( $baseRevision ) ) {
1563                         wfProfileOut( $fname );
1564                         return false;
1565                 }
1566                 $baseText = $baseRevision->getText();
1567
1568                 // The current state, we want to merge updates into it
1569                 $currentRevision =  Revision::loadFromTitle(
1570                         $db, $this->mArticle->mTitle );
1571                 if( is_null( $currentRevision ) ) {
1572                         wfProfileOut( $fname );
1573                         return false;
1574                 }
1575                 $currentText = $currentRevision->getText();
1576
1577                 $result = '';
1578                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1579                         $editText = $result;
1580                         wfProfileOut( $fname );
1581                         return true;
1582                 } else {
1583                         wfProfileOut( $fname );
1584                         return false;
1585                 }
1586         }
1587
1588         /**
1589          * Check if the browser is on a blacklist of user-agents known to
1590          * mangle UTF-8 data on form submission. Returns true if Unicode
1591          * should make it through, false if it's known to be a problem.
1592          * @return bool
1593          * @private
1594          */
1595         function checkUnicodeCompliantBrowser() {
1596                 global $wgBrowserBlackList;
1597                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1598                         // No User-Agent header sent? Trust it by default...
1599                         return true;
1600                 }
1601                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1602                 foreach ( $wgBrowserBlackList as $browser ) {
1603                         if ( preg_match($browser, $currentbrowser) ) {
1604                                 return false;
1605                         }
1606                 }
1607                 return true;
1608         }
1609
1610         /**
1611          * @deprecated use $wgParser->stripSectionName()
1612          */
1613         function pseudoParseSectionAnchor( $text ) {
1614                 global $wgParser;
1615                 return $wgParser->stripSectionName( $text );
1616         }
1617
1618         /**
1619          * Format an anchor fragment as it would appear for a given section name
1620          * @param string $text
1621          * @return string
1622          * @private
1623          */
1624         function sectionAnchor( $text ) {
1625                 global $wgParser;
1626                 return $wgParser->guessSectionNameFromWikiText( $text );
1627         }
1628
1629         /**
1630          * Shows a bulletin board style toolbar for common editing functions.
1631          * It can be disabled in the user preferences.
1632          * The necessary JavaScript code can be found in style/wikibits.js.
1633          */
1634         function getEditToolbar() {
1635                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1636
1637                 /**
1638                  * toolarray an array of arrays which each include the filename of
1639                  * the button image (without path), the opening tag, the closing tag,
1640                  * and optionally a sample text that is inserted between the two when no
1641                  * selection is highlighted.
1642                  * The tip text is shown when the user moves the mouse over the button.
1643                  *
1644                  * Already here are accesskeys (key), which are not used yet until someone
1645                  * can figure out a way to make them work in IE. However, we should make
1646                  * sure these keys are not defined on the edit page.
1647                  */
1648                 $toolarray = array(
1649                         array(  'image' => 'button_bold.png',
1650                                 'id'    => 'mw-editbutton-bold',
1651                                 'open'  => '\\\'\\\'\\\'',
1652                                 'close' => '\\\'\\\'\\\'',
1653                                 'sample'=> wfMsg('bold_sample'),
1654                                 'tip'   => wfMsg('bold_tip'),
1655                                 'key'   => 'B'
1656                         ),
1657                         array(  'image' => 'button_italic.png',
1658                                 'id'    => 'mw-editbutton-italic',
1659                                 'open'  => '\\\'\\\'',
1660                                 'close' => '\\\'\\\'',
1661                                 'sample'=> wfMsg('italic_sample'),
1662                                 'tip'   => wfMsg('italic_tip'),
1663                                 'key'   => 'I'
1664                         ),
1665                         array(  'image' => 'button_link.png',
1666                                 'id'    => 'mw-editbutton-link',
1667                                 'open'  => '[[',
1668                                 'close' => ']]',
1669                                 'sample'=> wfMsg('link_sample'),
1670                                 'tip'   => wfMsg('link_tip'),
1671                                 'key'   => 'L'
1672                         ),
1673                         array(  'image' => 'button_extlink.png',
1674                                 'id'    => 'mw-editbutton-extlink',
1675                                 'open'  => '[',
1676                                 'close' => ']',
1677                                 'sample'=> wfMsg('extlink_sample'),
1678                                 'tip'   => wfMsg('extlink_tip'),
1679                                 'key'   => 'X'
1680                         ),
1681                         array(  'image' => 'button_headline.png',
1682                                 'id'    => 'mw-editbutton-headline',
1683                                 'open'  => "\\n== ",
1684                                 'close' => " ==\\n",
1685                                 'sample'=> wfMsg('headline_sample'),
1686                                 'tip'   => wfMsg('headline_tip'),
1687                                 'key'   => 'H'
1688                         ),
1689                         array(  'image' => 'button_image.png',
1690                                 'id'    => 'mw-editbutton-image',
1691                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1692                                 'close' => ']]',
1693                                 'sample'=> wfMsg('image_sample'),
1694                                 'tip'   => wfMsg('image_tip'),
1695                                 'key'   => 'D'
1696                         ),
1697                         array(  'image' => 'button_media.png',
1698                                 'id'    => 'mw-editbutton-media',
1699                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1700                                 'close' => ']]',
1701                                 'sample'=> wfMsg('media_sample'),
1702                                 'tip'   => wfMsg('media_tip'),
1703                                 'key'   => 'M'
1704                         ),
1705                         array(  'image' => 'button_math.png',
1706                                 'id'    => 'mw-editbutton-math',
1707                                 'open'  => "<math>",
1708                                 'close' => "<\\/math>",
1709                                 'sample'=> wfMsg('math_sample'),
1710                                 'tip'   => wfMsg('math_tip'),
1711                                 'key'   => 'C'
1712                         ),
1713                         array(  'image' => 'button_nowiki.png',
1714                                 'id'    => 'mw-editbutton-nowiki',
1715                                 'open'  => "<nowiki>",
1716                                 'close' => "<\\/nowiki>",
1717                                 'sample'=> wfMsg('nowiki_sample'),
1718                                 'tip'   => wfMsg('nowiki_tip'),
1719                                 'key'   => 'N'
1720                         ),
1721                         array(  'image' => 'button_sig.png',
1722                                 'id'    => 'mw-editbutton-signature',
1723                                 'open'  => '--~~~~',
1724                                 'close' => '',
1725                                 'sample'=> '',
1726                                 'tip'   => wfMsg('sig_tip'),
1727                                 'key'   => 'Y'
1728                         ),
1729                         array(  'image' => 'button_hr.png',
1730                                 'id'    => 'mw-editbutton-hr',
1731                                 'open'  => "\\n----\\n",
1732                                 'close' => '',
1733                                 'sample'=> '',
1734                                 'tip'   => wfMsg('hr_tip'),
1735                                 'key'   => 'R'
1736                         )
1737                 );
1738                 $toolbar = "<div id='toolbar'>\n";
1739                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1740
1741                 foreach($toolarray as $tool) {
1742
1743                         $cssId = $tool['id'];
1744                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1745                         $open=$tool['open'];
1746                         $close=$tool['close'];
1747                         $sample = wfEscapeJsString( $tool['sample'] );
1748
1749                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1750                         // Older browsers show a "speedtip" type message only for ALT.
1751                         // Ideally these should be different, realistically they
1752                         // probably don't need to be.
1753                         $tip = wfEscapeJsString( $tool['tip'] );
1754
1755                         #$key = $tool["key"];
1756
1757                         $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
1758                 }
1759
1760                 $toolbar.="/*]]>*/\n</script>";
1761                 $toolbar.="\n</div>";
1762                 return $toolbar;
1763         }
1764
1765         /**
1766          * Returns an array of html code of the following checkboxes:
1767          * minor and watch
1768          *
1769          * @param $tabindex Current tabindex
1770          * @param $skin Skin object
1771          * @param $checked Array of checkbox => bool, where bool indicates the checked
1772          *                 status of the checkbox
1773          *
1774          * @return array
1775          */
1776         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1777                 global $wgUser;
1778
1779                 $checkboxes = array();
1780
1781                 $checkboxes['minor'] = '';
1782                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1783                 if ( $wgUser->isAllowed('minoredit') ) {
1784                         $attribs = array(
1785                                 'tabindex'  => ++$tabindex,
1786                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1787                                 'id'        => 'wpMinoredit',
1788                         );
1789                         $checkboxes['minor'] =
1790                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1791                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1792                 }
1793
1794                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1795                 $checkboxes['watch'] = '';
1796                 if ( $wgUser->isLoggedIn() ) {
1797                         $attribs = array(
1798                                 'tabindex'  => ++$tabindex,
1799                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1800                                 'id'        => 'wpWatchthis',
1801                         );
1802                         $checkboxes['watch'] =
1803                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1804                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1805                 }
1806                 return $checkboxes;
1807         }
1808
1809         /**
1810          * Returns an array of html code of the following buttons:
1811          * save, diff, preview and live
1812          *
1813          * @param $tabindex Current tabindex
1814          *
1815          * @return array
1816          */
1817         public function getEditButtons(&$tabindex) {
1818                 global $wgLivePreview, $wgUser;
1819
1820                 $buttons = array();
1821
1822                 $temp = array(
1823                         'id'        => 'wpSave',
1824                         'name'      => 'wpSave',
1825                         'type'      => 'submit',
1826                         'tabindex'  => ++$tabindex,
1827                         'value'     => wfMsg('savearticle'),
1828                         'accesskey' => wfMsg('accesskey-save'),
1829                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1830                 );
1831                 $buttons['save'] = wfElement('input', $temp, '');
1832
1833                 ++$tabindex; // use the same for preview and live preview
1834                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1835                         $temp = array(
1836                                 'id'        => 'wpPreview',
1837                                 'name'      => 'wpPreview',
1838                                 'type'      => 'submit',
1839                                 'tabindex'  => $tabindex,
1840                                 'value'     => wfMsg('showpreview'),
1841                                 'accesskey' => '',
1842                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1843                                 'style'     => 'display: none;',
1844                         );
1845                         $buttons['preview'] = wfElement('input', $temp, '');
1846
1847                         $temp = array(
1848                                 'id'        => 'wpLivePreview',
1849                                 'name'      => 'wpLivePreview',
1850                                 'type'      => 'submit',
1851                                 'tabindex'  => $tabindex,
1852                                 'value'     => wfMsg('showlivepreview'),
1853                                 'accesskey' => wfMsg('accesskey-preview'),
1854                                 'title'     => '',
1855                                 'onclick'   => $this->doLivePreviewScript(),
1856                         );
1857                         $buttons['live'] = wfElement('input', $temp, '');
1858                 } else {
1859                         $temp = array(
1860                                 'id'        => 'wpPreview',
1861                                 'name'      => 'wpPreview',
1862                                 'type'      => 'submit',
1863                                 'tabindex'  => $tabindex,
1864                                 'value'     => wfMsg('showpreview'),
1865                                 'accesskey' => wfMsg('accesskey-preview'),
1866                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1867                         );
1868                         $buttons['preview'] = wfElement('input', $temp, '');
1869                         $buttons['live'] = '';
1870                 }
1871
1872                 $temp = array(
1873                         'id'        => 'wpDiff',
1874                         'name'      => 'wpDiff',
1875                         'type'      => 'submit',
1876                         'tabindex'  => ++$tabindex,
1877                         'value'     => wfMsg('showdiff'),
1878                         'accesskey' => wfMsg('accesskey-diff'),
1879                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1880                 );
1881                 $buttons['diff'] = wfElement('input', $temp, '');
1882
1883                 return $buttons;
1884         }
1885
1886         /**
1887          * Output preview text only. This can be sucked into the edit page
1888          * via JavaScript, and saves the server time rendering the skin as
1889          * well as theoretically being more robust on the client (doesn't
1890          * disturb the edit box's undo history, won't eat your text on
1891          * failure, etc).
1892          *
1893          * @todo This doesn't include category or interlanguage links.
1894          *       Would need to enhance it a bit, <s>maybe wrap them in XML
1895          *       or something...</s> that might also require more skin
1896          *       initialization, so check whether that's a problem.
1897          */
1898         function livePreview() {
1899                 global $wgOut;
1900                 $wgOut->disable();
1901                 header( 'Content-type: text/xml; charset=utf-8' );
1902                 header( 'Cache-control: no-cache' );
1903
1904                 $previewText = $this->getPreviewText();
1905                 #$categories = $skin->getCategoryLinks();
1906
1907                 $s =
1908                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
1909                 Xml::tags( 'livepreview', null,
1910                         Xml::element( 'preview', null, $previewText )
1911                         #.      Xml::element( 'category', null, $categories )
1912                 );
1913                 echo $s;
1914         }
1915
1916
1917         /**
1918          * Get a diff between the current contents of the edit box and the
1919          * version of the page we're editing from.
1920          *
1921          * If this is a section edit, we'll replace the section as for final
1922          * save and then make a comparison.
1923          */
1924         function showDiff() {
1925                 $oldtext = $this->mArticle->fetchContent();
1926                 $newtext = $this->mArticle->replaceSection(
1927                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1928                 $newtext = $this->mArticle->preSaveTransform( $newtext );
1929                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
1930                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
1931                 if ( $oldtext !== false  || $newtext != '' ) {
1932                         $de = new DifferenceEngine( $this->mTitle );
1933                         $de->setText( $oldtext, $newtext );
1934                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1935                         $de->showDiffStyle();
1936                 } else {
1937                         $difftext = '';
1938                 }
1939
1940                 global $wgOut;
1941                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
1942         }
1943
1944         /**
1945          * Filter an input field through a Unicode de-armoring process if it
1946          * came from an old browser with known broken Unicode editing issues.
1947          *
1948          * @param WebRequest $request
1949          * @param string $field
1950          * @return string
1951          * @private
1952          */
1953         function safeUnicodeInput( $request, $field ) {
1954                 $text = rtrim( $request->getText( $field ) );
1955                 return $request->getBool( 'safemode' )
1956                         ? $this->unmakesafe( $text )
1957                         : $text;
1958         }
1959
1960         /**
1961          * Filter an output field through a Unicode armoring process if it is
1962          * going to an old browser with known broken Unicode editing issues.
1963          *
1964          * @param string $text
1965          * @return string
1966          * @private
1967          */
1968         function safeUnicodeOutput( $text ) {
1969                 global $wgContLang;
1970                 $codedText = $wgContLang->recodeForEdit( $text );
1971                 return $this->checkUnicodeCompliantBrowser()
1972                         ? $codedText
1973                         : $this->makesafe( $codedText );
1974         }
1975
1976         /**
1977          * A number of web browsers are known to corrupt non-ASCII characters
1978          * in a UTF-8 text editing environment. To protect against this,
1979          * detected browsers will be served an armored version of the text,
1980          * with non-ASCII chars converted to numeric HTML character references.
1981          *
1982          * Preexisting such character references will have a 0 added to them
1983          * to ensure that round-trips do not alter the original data.
1984          *
1985          * @param string $invalue
1986          * @return string
1987          * @private
1988          */
1989         function makesafe( $invalue ) {
1990                 // Armor existing references for reversability.
1991                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1992
1993                 $bytesleft = 0;
1994                 $result = "";
1995                 $working = 0;
1996                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1997                         $bytevalue = ord( $invalue{$i} );
1998                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1999                                 $result .= chr( $bytevalue );
2000                                 $bytesleft = 0;
2001                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2002                                 $working = $working << 6;
2003                                 $working += ($bytevalue & 0x3F);
2004                                 $bytesleft--;
2005                                 if( $bytesleft <= 0 ) {
2006                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2007                                 }
2008                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2009                                 $working = $bytevalue & 0x1F;
2010                                 $bytesleft = 1;
2011                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2012                                 $working = $bytevalue & 0x0F;
2013                                 $bytesleft = 2;
2014                         } else { //1111 0xxx
2015                                 $working = $bytevalue & 0x07;
2016                                 $bytesleft = 3;
2017                         }
2018                 }
2019                 return $result;
2020         }
2021
2022         /**
2023          * Reverse the previously applied transliteration of non-ASCII characters
2024          * back to UTF-8. Used to protect data from corruption by broken web browsers
2025          * as listed in $wgBrowserBlackList.
2026          *
2027          * @param string $invalue
2028          * @return string
2029          * @private
2030          */
2031         function unmakesafe( $invalue ) {
2032                 $result = "";
2033                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2034                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2035                                 $i += 3;
2036                                 $hexstring = "";
2037                                 do {
2038                                         $hexstring .= $invalue{$i};
2039                                         $i++;
2040                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2041
2042                                 // Do some sanity checks. These aren't needed for reversability,
2043                                 // but should help keep the breakage down if the editor
2044                                 // breaks one of the entities whilst editing.
2045                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2046                                         $codepoint = hexdec($hexstring);
2047                                         $result .= codepointToUtf8( $codepoint );
2048                                 } else {
2049                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2050                                 }
2051                         } else {
2052                                 $result .= substr( $invalue, $i, 1 );
2053                         }
2054                 }
2055                 // reverse the transform that we made for reversability reasons.
2056                 return strtr( $result, array( "&#x0" => "&#x" ) );
2057         }
2058
2059         function noCreatePermission() {
2060                 global $wgOut;
2061                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2062                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
2063         }
2064
2065         /**
2066          * If there are rows in the deletion log for this page, show them,
2067          * along with a nice little note for the user
2068          *
2069          * @param OutputPage $out
2070          */
2071         private function showDeletionLog( $out ) {
2072                 $title = $this->mArticle->getTitle();
2073                 $reader = new LogReader(
2074                         new FauxRequest(
2075                                 array(
2076                                         'page' => $title->getPrefixedText(),
2077                                         'type' => 'delete',
2078                                         )
2079                         )
2080                 );
2081                 if( $reader->hasRows() ) {
2082                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2083                         $out->addWikiText( wfMsg( 'recreate-deleted-warn' ) );
2084                         $viewer = new LogViewer( $reader );
2085                         $viewer->showList( $out );
2086                         $out->addHtml( '</div>' );
2087                 }
2088         }
2089
2090         /**
2091          * Attempt submission
2092          * @return bool false if output is done, true if the rest of the form should be displayed
2093          */
2094         function attemptSave() {
2095                 global $wgUser, $wgOut;
2096
2097                 $resultDetails = false;
2098                 $value = $this->internalAttemptSave( $resultDetails );
2099                 switch ($value)
2100                 {
2101                         case self::AS_HOOK_ERROR_EXPECTED:
2102                         case self::AS_CONTENT_TOO_BIG:
2103                         case self::AS_ARTICLE_WAS_DELETED:
2104                         case self::AS_CONFLICT_DETECTED:
2105                         case self::AS_SUMMARY_NEEDED:
2106                         case self::AS_TEXTBOX_EMPTY:
2107                         case self::AS_MAX_ARTICLE_SIZE_EXCEDED:
2108                         case self::AS_END:
2109                                 return true;
2110
2111                         case self::AS_HOOK_ERROR:
2112                         case self::AS_FILTERING:
2113                         case self::AS_SUCCESS_NEW_ARTICLE:
2114                         case self::AS_SUCCESS_UPDATE:
2115                                 return false;
2116
2117                         case self::AS_SPAM_ERROR:
2118                                 $this->spamPage ( $resultDetails['spam'] );
2119                                 return false;
2120
2121                         case self::AS_BLOCKED_PAGE_FOR_USER:
2122                                 $this->blockedPage();
2123                                 return false;
2124
2125                         case self::AS_READ_ONLY_PAGE_ANON:
2126                                 $this->userNotLoggedInPage();
2127                                 return false;
2128
2129                         case self::AS_READ_ONLY_PAGE_LOGGED:
2130                         case self::AS_READ_ONLY_PAGE:
2131                                 $wgOut->readOnlyPage();
2132                                 return false;
2133
2134                         case self::AS_RATE_LIMITED:
2135                                 $wgOut->rateLimited();
2136                                 return false;
2137
2138                         case self::AS_NO_CREATE_PERMISSION;
2139                                 $this->noCreatePermission();
2140                                 return;
2141
2142                         case self::AS_BLANK_ARTICLE:
2143                                 $wgOut->redirect( $this->mTitle->getFullURL() );
2144                                 return false;
2145                 }
2146         }
2147 }