includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  */
   5
   6 /**
   7  * The edit page/HTML interface (split from Article)
   8  * The actual database and text munging is still in Article,
   9  * but it should get easier to call those from alternate
  10  * interfaces.
  11  */
  12 class EditPage {
  13         var $mArticle;
  14         var $mTitle;
  15         var $mMetaData = '';
  16         var $isConflict = false;
  17         var $isCssJsSubpage = false;
  18         var $deletedSinceEdit = false;
  19         var $formtype;
  20         var $firsttime;
  21         var $lastDelete;
  22         var $mTokenOk = false;
  23         var $mTokenOkExceptSuffix = false;
  24         var $mTriedSave = false;
  25         var $tooBig = false;
  26         var $kblength = false;
  27         var $missingComment = false;
  28         var $missingSummary = false;
  29         var $allowBlankSummary = false;
  30         var $autoSumm = '';
  31         var $hookError = '';
  32         var $mPreviewTemplates;
  33
  34         # Form values
  35         var $save = false, $preview = false, $diff = false;
  36         var $minoredit = false, $watchthis = false, $recreate = false;
  37         var $textbox1 = '', $textbox2 = '', $summary = '';
  38         var $edittime = '', $section = '', $starttime = '';
  39         var $oldid = 0, $editintro = '', $scrolltop = null;
  40
  41         # Placeholders for text injection by hooks (must be HTML)
  42         # extensions should take care to _append_ to the present value
  43         public $editFormPageTop; // Before even the preview
  44         public $editFormTextTop;
  45         public $editFormTextAfterWarn;
  46         public $editFormTextAfterTools;
  47         public $editFormTextBottom;
  48
  49         /**
  50          * @todo document
  51          * @param $article
  52          */
  53         function EditPage( $article ) {
  54                 $this->mArticle =& $article;
  55                 global $wgTitle;
  56                 $this->mTitle =& $wgTitle;
  57
  58                 # Placeholders for text injection by hooks (empty per default)
  59                 $this->editFormPageTop =
  60                 $this->editFormTextTop =
  61                 $this->editFormTextAfterWarn =
  62                 $this->editFormTextAfterTools =
  63                 $this->editFormTextBottom = "";
  64         }
  65
  66         /**
  67          * Fetch initial editing page content.
  68          */
  69         private function getContent( $def_text = '' ) {
  70                 global $wgOut, $wgRequest, $wgParser;
  71
  72                 # Get variables from query string :P
  73                 $section = $wgRequest->getVal( 'section' );
  74                 $preload = $wgRequest->getVal( 'preload' );
  75                 $undoafter = $wgRequest->getVal( 'undoafter' );
  76                 $undo = $wgRequest->getVal( 'undo' );
  77
  78                 wfProfileIn( __METHOD__ );
  79
  80                 $text = '';
  81                 if( !$this->mTitle->exists() ) {
  82                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
  83                                 # If this is a system message, get the default text.
  84                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
  85                         } else {
  86                                 # If requested, preload some text.
  87                                 $text = $this->getPreloadedText( $preload );
  88                         }
  89                         # We used to put MediaWiki:Newarticletext here if
  90                         # $text was empty at this point.
  91                         # This is now shown above the edit box instead.
  92                 } else {
  93                         // FIXME: may be better to use Revision class directly
  94                         // But don't mess with it just yet. Article knows how to
  95                         // fetch the page record from the high-priority server,
  96                         // which is needed to guarantee we don't pick up lagged
  97                         // information.
  98
  99                         $text = $this->mArticle->getContent();
 100
 101                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 102                                 # If they got undoafter and undo round the wrong way, switch them
 103                                 $temp = $undoafter;
 104                                 $undoafter = $undo;
 105                                 $undo = $temp;
 106                         }
 107
 108                         if ( $undo > 0 && $undo > $undoafter ) {
 109                                 # Undoing a specific edit overrides section editing; section-editing
 110                                 # doesn't work with undoing.
 111                                 if ( $undoafter ) {
 112                                         $undorev = Revision::newFromId($undo);
 113                                         $oldrev = Revision::newFromId($undoafter);
 114                                 } else {
 115                                         $undorev = Revision::newFromId($undo);
 116                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 117                                 }
 118
 119                                 #Sanity check, make sure it's the right page.
 120                                 # Otherwise, $text will be left as-is.
 121                                 if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
 122                                         $undorev_text = $undorev->getText();
 123                                         $oldrev_text = $oldrev->getText();
 124                                         $currev_text = $text;
 125
 126                                         #No use doing a merge if it's just a straight revert.
 127                                         if ( $currev_text != $undorev_text ) {
 128                                                 $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
 129                                         } else {
 130                                                 $text = $oldrev_text;
 131                                                 $result = true;
 132                                         }
 133                                 } else {
 134                                         // Failed basic sanity checks.
 135                                         // Older revisions may have been removed since the link
 136                                         // was created, or we may simply have got bogus input.
 137                                         $result = false;
 138                                 }
 139
 140                                 if( $result ) {
 141                                         # Inform the user of our success and set an automatic edit summary
 142                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 143                                         $firstrev = $oldrev->getNext();
 144                                         # If we just undid one rev, use an autosummary
 145                                         if ( $firstrev->mId == $undo ) {
 146                                                 $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 147                                         }
 148                                         $this->formtype = 'diff';
 149                                 } else {
 150                                         # Warn the user that something went wrong
 151                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 152                                 }
 153                         } else if( $section != '' ) {
 154                                 if( $section == 'new' ) {
 155                                         $text = $this->getPreloadedText( $preload );
 156                                 } else {
 157                                         $text = $wgParser->getSection( $text, $section, $def_text );
 158                                 }
 159                         }
 160                 }
 161
 162                 wfProfileOut( __METHOD__ );
 163                 return $text;
 164         }
 165
 166         /**
 167          * Get the contents of a page from its title and remove includeonly tags
 168          *
 169          * @param $preload String: the title of the page.
 170          * @return string The contents of the page.
 171          */
 172         private function getPreloadedText($preload) {
 173                 if ( $preload === '' )
 174                         return '';
 175                 else {
 176                         $preloadTitle = Title::newFromText( $preload );
 177                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 178                                 $rev=Revision::newFromTitle($preloadTitle);
 179                                 if ( is_object( $rev ) ) {
 180                                         $text = $rev->getText();
 181                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 182                                         // its own mini-parser! -ævar
 183                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 184                                         return $text;
 185                                 } else
 186                                         return '';
 187                         }
 188                 }
 189         }
 190
 191         /**
 192          * This is the function that extracts metadata from the article body on the first view.
 193          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 194          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 195          */
 196         function extractMetaDataFromArticle () {
 197                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 198                 $this->mMetaData = '' ;
 199                 if ( !$wgUseMetadataEdit ) return ;
 200                 if ( $wgMetadataWhitelist == '' ) return ;
 201                 $s = '' ;
 202                 $t = $this->getContent();
 203
 204                 # MISSING : <nowiki> filtering
 205
 206                 # Categories and language links
 207                 $t = explode ( "\n" , $t ) ;
 208                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 209                 $cat = $ll = array() ;
 210                 foreach ( $t AS $key => $x )
 211                 {
 212                         $y = trim ( strtolower ( $x ) ) ;
 213                         while ( substr ( $y , 0 , 2 ) == '[[' )
 214                         {
 215                                 $y = explode ( ']]' , trim ( $x ) ) ;
 216                                 $first = array_shift ( $y ) ;
 217                                 $first = explode ( ':' , $first ) ;
 218                                 $ns = array_shift ( $first ) ;
 219                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 220                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 221                                 {
 222                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 223                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 224                                         else $ll[] = $add ;
 225                                         $x = implode ( ']]' , $y ) ;
 226                                         $t[$key] = $x ;
 227                                         $y = trim ( strtolower ( $x ) ) ;
 228                                 }
 229                         }
 230                 }
 231                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 232                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 233                 $t = implode ( "\n" , $t ) ;
 234
 235                 # Load whitelist
 236                 $sat = array () ; # stand-alone-templates; must be lowercase
 237                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 238                 $wl_article = new Article ( $wl_title ) ;
 239                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 240                 foreach ( $wl AS $x )
 241                 {
 242                         $isentry = false ;
 243                         $x = trim ( $x ) ;
 244                         while ( substr ( $x , 0 , 1 ) == '*' )
 245                         {
 246                                 $isentry = true ;
 247                                 $x = trim ( substr ( $x , 1 ) ) ;
 248                         }
 249                         if ( $isentry )
 250                         {
 251                                 $sat[] = strtolower ( $x ) ;
 252                         }
 253
 254                 }
 255
 256                 # Templates, but only some
 257                 $t = explode ( '{{' , $t ) ;
 258                 $tl = array () ;
 259                 foreach ( $t AS $key => $x )
 260                 {
 261                         $y = explode ( '}}' , $x , 2 ) ;
 262                         if ( count ( $y ) == 2 )
 263                         {
 264                                 $z = $y[0] ;
 265                                 $z = explode ( '|' , $z ) ;
 266                                 $tn = array_shift ( $z ) ;
 267                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 268                                 {
 269                                         $tl[] = '{{' . $y[0] . '}}' ;
 270                                         $t[$key] = $y[1] ;
 271                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 272                                 }
 273                                 else $t[$key] = '{{' . $x ;
 274                         }
 275                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 276                         else $t[$key] = $x ;
 277                 }
 278                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 279                 $t = implode ( '' , $t ) ;
 280
 281                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 282                 $this->mArticle->mContent = $t ;
 283                 $this->mMetaData = $s ;
 284         }
 285
 286         function submit() {
 287                 $this->edit();
 288         }
 289
 290         /**
 291          * This is the function that gets called for "action=edit". It
 292          * sets up various member variables, then passes execution to
 293          * another function, usually showEditForm()
 294          *
 295          * The edit form is self-submitting, so that when things like
 296          * preview and edit conflicts occur, we get the same form back
 297          * with the extra stuff added.  Only when the final submission
 298          * is made and all is well do we actually save and redirect to
 299          * the newly-edited page.
 300          */
 301         function edit() {
 302                 global $wgOut, $wgUser, $wgRequest, $wgTitle;
 303                 global $wgEmailConfirmToEdit;
 304
 305                 if ( ! wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 306                         return;
 307
 308                 $fname = 'EditPage::edit';
 309                 wfProfileIn( $fname );
 310                 wfDebug( "$fname: enter\n" );
 311
 312                 // this is not an article
 313                 $wgOut->setArticleFlag(false);
 314
 315                 $this->importFormData( $wgRequest );
 316                 $this->firsttime = false;
 317
 318                 if( $this->live ) {
 319                         $this->livePreview();
 320                         wfProfileOut( $fname );
 321                         return;
 322                 }
 323
 324                 if ( ! $this->mTitle->userCan( 'edit' ) ) {
 325                         wfDebug( "$fname: user can't edit\n" );
 326                         $wgOut->readOnlyPage( $this->getContent(), true );
 327                         wfProfileOut( $fname );
 328                         return;
 329                 }
 330                 wfDebug( "$fname: Checking blocks\n" );
 331                 if ( !$this->preview && !$this->diff && $wgUser->isBlockedFrom( $this->mTitle, !$this->save ) ) {
 332                         # When previewing, don't check blocked state - will get caught at save time.
 333                         # Also, check when starting edition is done against slave to improve performance.
 334                         wfDebug( "$fname: user is blocked\n" );
 335                         $this->blockedPage();
 336                         wfProfileOut( $fname );
 337                         return;
 338                 }
 339                 if ( !$wgUser->isAllowed('edit') ) {
 340                         if ( $wgUser->isAnon() ) {
 341                                 wfDebug( "$fname: user must log in\n" );
 342                                 $this->userNotLoggedInPage();
 343                                 wfProfileOut( $fname );
 344                                 return;
 345                         } else {
 346                                 wfDebug( "$fname: read-only page\n" );
 347                                 $wgOut->readOnlyPage( $this->getContent(), true );
 348                                 wfProfileOut( $fname );
 349                                 return;
 350                         }
 351                 }
 352                 if ($wgEmailConfirmToEdit && !$wgUser->isEmailConfirmed()) {
 353                         wfDebug("$fname: user must confirm e-mail address\n");
 354                         $this->userNotConfirmedPage();
 355                         wfProfileOut($fname);
 356                         return;
 357                 }
 358                 if ( !$this->mTitle->userCan( 'create' ) && !$this->mTitle->exists() ) {
 359                         wfDebug( "$fname: no create permission\n" );
 360                         $this->noCreatePermission();
 361                         wfProfileOut( $fname );
 362                         return;
 363                 }
 364                 if ( wfReadOnly() ) {
 365                         wfDebug( "$fname: read-only mode is engaged\n" );
 366                         if( $this->save || $this->preview ) {
 367                                 $this->formtype = 'preview';
 368                         } else if ( $this->diff ) {
 369                                 $this->formtype = 'diff';
 370                         } else {
 371                                 $wgOut->readOnlyPage( $this->getContent() );
 372                                 wfProfileOut( $fname );
 373                                 return;
 374                         }
 375                 } else {
 376                         if ( $this->save ) {
 377                                 $this->formtype = 'save';
 378                         } else if ( $this->preview ) {
 379                                 $this->formtype = 'preview';
 380                         } else if ( $this->diff ) {
 381                                 $this->formtype = 'diff';
 382                         } else { # First time through
 383                                 $this->firsttime = true;
 384                                 if( $this->previewOnOpen() ) {
 385                                         $this->formtype = 'preview';
 386                                 } else {
 387                                         $this->extractMetaDataFromArticle () ;
 388                                         $this->formtype = 'initial';
 389                                 }
 390                         }
 391                 }
 392
 393                 wfProfileIn( "$fname-business-end" );
 394
 395                 $this->isConflict = false;
 396                 // css / js subpages of user pages get a special treatment
 397                 $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
 398                 $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
 399
 400                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 401                  * no matter it's current state
 402                  */
 403                 $this->deletedSinceEdit = false;
 404                 if ( $this->edittime != '' ) {
 405                         /* Note that we rely on logging table, which hasn't been always there,
 406                          * but that doesn't matter, because this only applies to brand new
 407                          * deletes. This is done on every preview and save request. Move it further down
 408                          * to only perform it on saves
 409                          */
 410                         if ( $this->mTitle->isDeleted() ) {
 411                                 $this->lastDelete = $this->getLastDelete();
 412                                 if ( !is_null($this->lastDelete) ) {
 413                                         $deletetime = $this->lastDelete->log_timestamp;
 414                                         if ( ($deletetime - $this->starttime) > 0 ) {
 415                                                 $this->deletedSinceEdit = true;
 416                                         }
 417                                 }
 418                         }
 419                 }
 420
 421                 # Show applicable editing introductions
 422                 if( $this->formtype == 'initial' || $this->firsttime )
 423                         $this->showIntro();
 424
 425                 if( $this->mTitle->isTalkPage() ) {
 426                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 427                 }
 428
 429                 # Attempt submission here.  This will check for edit conflicts,
 430                 # and redundantly check for locked database, blocked IPs, etc.
 431                 # that edit() already checked just in case someone tries to sneak
 432                 # in the back door with a hand-edited submission URL.
 433
 434                 if ( 'save' == $this->formtype ) {
 435                         if ( !$this->attemptSave() ) {
 436                                 wfProfileOut( "$fname-business-end" );
 437                                 wfProfileOut( $fname );
 438                                 return;
 439                         }
 440                 }
 441
 442                 # First time through: get contents, set time for conflict
 443                 # checking, etc.
 444                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 445                         if ($this->initialiseForm() === false) {
 446                                 $this->noSuchSectionPage();
 447                                 wfProfileOut( "$fname-business-end" );
 448                                 wfProfileOut( $fname );
 449                                 return;
 450                         }
 451                         if( !$this->mTitle->getArticleId() )
 452                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 453                 }
 454
 455                 $this->showEditForm();
 456                 wfProfileOut( "$fname-business-end" );
 457                 wfProfileOut( $fname );
 458         }
 459
 460         /**
 461          * Return true if this page should be previewed when the edit form
 462          * is initially opened.
 463          * @return bool
 464          * @private
 465          */
 466         function previewOnOpen() {
 467                 global $wgUser;
 468                 return $this->section != 'new' &&
 469                         ( ( $wgUser->getOption( 'previewonfirst' ) && $this->mTitle->exists() ) ||
 470                                 ( $this->mTitle->getNamespace() == NS_CATEGORY &&
 471                                         !$this->mTitle->exists() ) );
 472         }
 473
 474         /**
 475          * @todo document
 476          * @param $request
 477          */
 478         function importFormData( &$request ) {
 479                 global $wgLang, $wgUser;
 480                 $fname = 'EditPage::importFormData';
 481                 wfProfileIn( $fname );
 482
 483                 if( $request->wasPosted() ) {
 484                         # These fields need to be checked for encoding.
 485                         # Also remove trailing whitespace, but don't remove _initial_
 486                         # whitespace from the text boxes. This may be significant formatting.
 487                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 488                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 489                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 490                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 491                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 492
 493                         $this->edittime = $request->getVal( 'wpEdittime' );
 494                         $this->starttime = $request->getVal( 'wpStarttime' );
 495
 496                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 497
 498                         if( is_null( $this->edittime ) ) {
 499                                 # If the form is incomplete, force to preview.
 500                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 501                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 502                                 $this->preview  = true;
 503                         } else {
 504                                 /* Fallback for live preview */
 505                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 506                                 $this->diff = $request->getCheck( 'wpDiff' );
 507
 508                                 // Remember whether a save was requested, so we can indicate
 509                                 // if we forced preview due to session failure.
 510                                 $this->mTriedSave = !$this->preview;
 511
 512                                 if ( $this->tokenOk( $request ) ) {
 513                                         # Some browsers will not report any submit button
 514                                         # if the user hits enter in the comment box.
 515                                         # The unmarked state will be assumed to be a save,
 516                                         # if the form seems otherwise complete.
 517                                         wfDebug( "$fname: Passed token check.\n" );
 518                                 } else if ( $this->diff ) {
 519                                         # Failed token check, but only requested "Show Changes".
 520                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 521                                 } else {
 522                                         # Page might be a hack attempt posted from
 523                                         # an external site. Preview instead of saving.
 524                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 525                                         $this->preview = true;
 526                                 }
 527                         }
 528                         $this->save    = ! ( $this->preview OR $this->diff );
 529                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 530                                 $this->edittime = null;
 531                         }
 532
 533                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 534                                 $this->starttime = null;
 535                         }
 536
 537                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 538
 539                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 540                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 541
 542                         # Don't force edit summaries when a user is editing their own user or talk page
 543                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 544                                 $this->allowBlankSummary = true;
 545                         } else {
 546                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 547                         }
 548
 549                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 550                 } else {
 551                         # Not a posted form? Start with nothing.
 552                         wfDebug( "$fname: Not a posted form.\n" );
 553                         $this->textbox1  = '';
 554                         $this->textbox2  = '';
 555                         $this->mMetaData = '';
 556                         $this->summary   = '';
 557                         $this->edittime  = '';
 558                         $this->starttime = wfTimestampNow();
 559                         $this->preview   = false;
 560                         $this->save      = false;
 561                         $this->diff      = false;
 562                         $this->minoredit = false;
 563                         $this->watchthis = false;
 564                         $this->recreate  = false;
 565                 }
 566
 567                 $this->oldid = $request->getInt( 'oldid' );
 568
 569                 # Section edit can come from either the form or a link
 570                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 571
 572                 $this->live = $request->getCheck( 'live' );
 573                 $this->editintro = $request->getText( 'editintro' );
 574
 575                 wfProfileOut( $fname );
 576         }
 577
 578         /**
 579          * Make sure the form isn't faking a user's credentials.
 580          *
 581          * @param $request WebRequest
 582          * @return bool
 583          * @private
 584          */
 585         function tokenOk( &$request ) {
 586                 global $wgUser;
 587                 $token = $request->getVal( 'wpEditToken' );
 588                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 589                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 590                 return $this->mTokenOk;
 591         }
 592
 593         /**
 594          * Show all applicable editing introductions
 595          */
 596         private function showIntro() {
 597                 global $wgOut, $wgUser;
 598                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 599                         if( $wgUser->isLoggedIn() ) {
 600                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 601                         } else {
 602                                 $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
 603                         }
 604                         $this->showDeletionLog( $wgOut );
 605                 }
 606         }
 607
 608         /**
 609          * Attempt to show a custom editing introduction, if supplied
 610          *
 611          * @return bool
 612          */
 613         private function showCustomIntro() {
 614                 if( $this->editintro ) {
 615                         $title = Title::newFromText( $this->editintro );
 616                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 617                                 global $wgOut;
 618                                 $revision = Revision::newFromTitle( $title );
 619                                 $wgOut->addSecondaryWikiText( $revision->getText() );
 620                                 return true;
 621                         } else {
 622                                 return false;
 623                         }
 624                 } else {
 625                         return false;
 626                 }
 627         }
 628
 629         /**
 630          * Attempt submission
 631          * @return bool false if output is done, true if the rest of the form should be displayed
 632          */
 633         function attemptSave() {
 634                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
 635                 global $wgMaxArticleSize;
 636
 637                 $fname = 'EditPage::attemptSave';
 638                 wfProfileIn( $fname );
 639                 wfProfileIn( "$fname-checks" );
 640
 641                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 642                 {
 643                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 644                         return false;
 645                 }
 646
 647                 # Reintegrate metadata
 648                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 649                 $this->mMetaData = '' ;
 650
 651                 # Check for spam
 652                 $matches = array();
 653                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 654                         $this->spamPage ( $matches[0] );
 655                         wfProfileOut( "$fname-checks" );
 656                         wfProfileOut( $fname );
 657                         return false;
 658                 }
 659                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 660                         # Error messages or other handling should be performed by the filter function
 661                         wfProfileOut( $fname );
 662                         wfProfileOut( "$fname-checks" );
 663                         return false;
 664                 }
 665                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 666                         # Error messages etc. could be handled within the hook...
 667                         wfProfileOut( $fname );
 668                         wfProfileOut( "$fname-checks" );
 669                         return false;
 670                 } elseif( $this->hookError != '' ) {
 671                         # ...or the hook could be expecting us to produce an error
 672                         wfProfileOut( "$fname-checks " );
 673                         wfProfileOut( $fname );
 674                         return true;
 675                 }
 676                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 677                         # Check block state against master, thus 'false'.
 678                         $this->blockedPage();
 679                         wfProfileOut( "$fname-checks" );
 680                         wfProfileOut( $fname );
 681                         return false;
 682                 }
 683                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 684                 if ( $this->kblength > $wgMaxArticleSize ) {
 685                         // Error will be displayed by showEditForm()
 686                         $this->tooBig = true;
 687                         wfProfileOut( "$fname-checks" );
 688                         wfProfileOut( $fname );
 689                         return true;
 690                 }
 691
 692                 if ( !$wgUser->isAllowed('edit') ) {
 693                         if ( $wgUser->isAnon() ) {
 694                                 $this->userNotLoggedInPage();
 695                                 wfProfileOut( "$fname-checks" );
 696                                 wfProfileOut( $fname );
 697                                 return false;
 698                         }
 699                         else {
 700                                 $wgOut->readOnlyPage();
 701                                 wfProfileOut( "$fname-checks" );
 702                                 wfProfileOut( $fname );
 703                                 return false;
 704                         }
 705                 }
 706
 707                 if ( wfReadOnly() ) {
 708                         $wgOut->readOnlyPage();
 709                         wfProfileOut( "$fname-checks" );
 710                         wfProfileOut( $fname );
 711                         return false;
 712                 }
 713                 if ( $wgUser->pingLimiter() ) {
 714                         $wgOut->rateLimited();
 715                         wfProfileOut( "$fname-checks" );
 716                         wfProfileOut( $fname );
 717                         return false;
 718                 }
 719
 720                 # If the article has been deleted while editing, don't save it without
 721                 # confirmation
 722                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 723                         wfProfileOut( "$fname-checks" );
 724                         wfProfileOut( $fname );
 725                         return true;
 726                 }
 727
 728                 wfProfileOut( "$fname-checks" );
 729
 730                 # If article is new, insert it.
 731                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 732                 if ( 0 == $aid ) {
 733
 734                         // Late check for create permission, just in case *PARANOIA*
 735                         if ( !$this->mTitle->userCan( 'create' ) ) {
 736                                 wfDebug( "$fname: no create permission\n" );
 737                                 $this->noCreatePermission();
 738                                 wfProfileOut( $fname );
 739                                 return;
 740                         }
 741
 742                         # Don't save a new article if it's blank.
 743                         if ( ( '' == $this->textbox1 ) ) {
 744                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 745                                         wfProfileOut( $fname );
 746                                         return false;
 747                         }
 748
 749                         $isComment=($this->section=='new');
 750                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 751                                 $this->minoredit, $this->watchthis, false, $isComment);
 752
 753                         wfProfileOut( $fname );
 754                         return false;
 755                 }
 756
 757                 # Article exists. Check for edit conflict.
 758
 759                 $this->mArticle->clear(); # Force reload of dates, etc.
 760                 $this->mArticle->forUpdate( true ); # Lock the article
 761
 762                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 763
 764                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 765                         $this->isConflict = true;
 766                         if( $this->section == 'new' ) {
 767                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 768                                         $this->mArticle->getComment() == $this->summary ) {
 769                                         // Probably a duplicate submission of a new comment.
 770                                         // This can happen when squid resends a request after
 771                                         // a timeout but the first one actually went through.
 772                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 773                                 } else {
 774                                         // New comment; suppress conflict.
 775                                         $this->isConflict = false;
 776                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 777                                 }
 778                         }
 779                 }
 780                 $userid = $wgUser->getID();
 781
 782                 if ( $this->isConflict) {
 783                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 784                                 $this->mArticle->getTimestamp() . "'\n" );
 785                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 786                 }
 787                 else {
 788                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 789                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 790                 }
 791                 if( is_null( $text ) ) {
 792                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 793                         $this->isConflict = true;
 794                         $text = $this->textbox1;
 795                 }
 796
 797                 # Suppress edit conflict with self, except for section edits where merging is required.
 798                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 799                         wfDebug( "Suppressing edit conflict, same user.\n" );
 800                         $this->isConflict = false;
 801                 } else {
 802                         # switch from section editing to normal editing in edit conflict
 803                         if($this->isConflict) {
 804                                 # Attempt merge
 805                                 if( $this->mergeChangesInto( $text ) ){
 806                                         // Successful merge! Maybe we should tell the user the good news?
 807                                         $this->isConflict = false;
 808                                         wfDebug( "Suppressing edit conflict, successful merge.\n" );
 809                                 } else {
 810                                         $this->section = '';
 811                                         $this->textbox1 = $text;
 812                                         wfDebug( "Keeping edit conflict, failed merge.\n" );
 813                                 }
 814                         }
 815                 }
 816
 817                 if ( $this->isConflict ) {
 818                         wfProfileOut( $fname );
 819                         return true;
 820                 }
 821
 822                 $oldtext = $this->mArticle->getContent();
 823
 824                 # Handle the user preference to force summaries here, but not for null edits
 825                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 826                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 827                         if( md5( $this->summary ) == $this->autoSumm ) {
 828                                 $this->missingSummary = true;
 829                                 wfProfileOut( $fname );
 830                                 return( true );
 831                         }
 832                 }
 833
 834                 #And a similar thing for new sections
 835                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 836                         if (trim($this->summary) == '') {
 837                                 $this->missingSummary = true;
 838                                 wfProfileOut( $fname );
 839                                 return( true );
 840                         }
 841                 }
 842
 843                 # All's well
 844                 wfProfileIn( "$fname-sectionanchor" );
 845                 $sectionanchor = '';
 846                 if( $this->section == 'new' ) {
 847                         if ( $this->textbox1 == '' ) {
 848                                 $this->missingComment = true;
 849                                 return true;
 850                         }
 851                         if( $this->summary != '' ) {
 852                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 853                         }
 854                 } elseif( $this->section != '' ) {
 855                         # Try to get a section anchor from the section source, redirect to edited section if header found
 856                         # XXX: might be better to integrate this into Article::replaceSection
 857                         # for duplicate heading checking and maybe parsing
 858                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 859                         # we can't deal with anchors, includes, html etc in the header for now,
 860                         # headline would need to be parsed to improve this
 861                         if($hasmatch and strlen($matches[2]) > 0) {
 862                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 863                         }
 864                 }
 865                 wfProfileOut( "$fname-sectionanchor" );
 866
 867                 // Save errors may fall down to the edit form, but we've now
 868                 // merged the section into full text. Clear the section field
 869                 // so that later submission of conflict forms won't try to
 870                 // replace that into a duplicated mess.
 871                 $this->textbox1 = $text;
 872                 $this->section = '';
 873
 874                 // Check for length errors again now that the section is merged in
 875                 $this->kblength = (int)(strlen( $text ) / 1024);
 876                 if ( $this->kblength > $wgMaxArticleSize ) {
 877                         $this->tooBig = true;
 878                         wfProfileOut( $fname );
 879                         return true;
 880                 }
 881
 882                 # update the article here
 883                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 884                         $this->watchthis, '', $sectionanchor ) ) {
 885                         wfProfileOut( $fname );
 886                         return false;
 887                 } else {
 888                         $this->isConflict = true;
 889                 }
 890                 wfProfileOut( $fname );
 891                 return true;
 892         }
 893
 894         /**
 895          * Initialise form fields in the object
 896          * Called on the first invocation, e.g. when a user clicks an edit link
 897          */
 898         function initialiseForm() {
 899                 $this->edittime = $this->mArticle->getTimestamp();
 900                 $this->summary = '';
 901                 $this->textbox1 = $this->getContent(false);
 902                 if ($this->textbox1 === false) return false;
 903
 904                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 905                         $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
 906                 wfProxyCheck();
 907                 return true;
 908         }
 909
 910         /**
 911          * Send the edit form and related headers to $wgOut
 912          * @param $formCallback Optional callable that takes an OutputPage
 913          *                      parameter; will be called during form output
 914          *                      near the top, for captchas and the like.
 915          */
 916         function showEditForm( $formCallback=null ) {
 917                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 918
 919                 $fname = 'EditPage::showEditForm';
 920                 wfProfileIn( $fname );
 921
 922                 $sk = $wgUser->getSkin();
 923
 924                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 925
 926                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 927
 928                 # Enabled article-related sidebar, toplinks, etc.
 929                 $wgOut->setArticleRelated( true );
 930
 931                 if ( $this->isConflict ) {
 932                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 933                         $wgOut->setPageTitle( $s );
 934                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 935
 936                         $this->textbox2 = $this->textbox1;
 937                         $this->textbox1 = $this->getContent();
 938                         $this->edittime = $this->mArticle->getTimestamp();
 939                 } else {
 940
 941                         if( $this->section != '' ) {
 942                                 if( $this->section == 'new' ) {
 943                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 944                                 } else {
 945                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 946                                         $matches = array();
 947                                         if( !$this->summary && !$this->preview && !$this->diff ) {
 948                                                 preg_match( "/^(=+)(.+)\\1/mi",
 949                                                         $this->textbox1,
 950                                                         $matches );
 951                                                 if( !empty( $matches[2] ) ) {
 952                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 953                                                 }
 954                                         }
 955                                 }
 956                         } else {
 957                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 958                         }
 959                         $wgOut->setPageTitle( $s );
 960
 961                         if ( $this->missingComment ) {
 962                                 $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
 963                         }
 964
 965                         if( $this->missingSummary && $this->section != 'new' ) {
 966                                 $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
 967                         }
 968
 969                         if( $this->missingSummary && $this->section == 'new' ) {
 970                                 $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
 971                         }
 972
 973                         if( !$this->hookError == '' ) {
 974                                 $wgOut->addWikiText( $this->hookError );
 975                         }
 976
 977                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 978                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 979                         }
 980                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
 981                         // Let sysop know that this will make private content public if saved
 982                                 if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
 983                                         $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
 984                                 }
 985                                 if( !$this->mArticle->mRevision->isCurrent() ) {
 986                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
 987                                         $wgOut->addWikiText( wfMsg( 'editingold' ) );
 988                                 }
 989                         }
 990                 }
 991
 992                 if( wfReadOnly() ) {
 993                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 994                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
 995                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
 996                 } else {
 997                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
 998                                 # Check the skin exists
 999                                 if( $this->isValidCssJsSubpage ) {
1000                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
1001                                 } else {
1002                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
1003                                 }
1004                         }
1005                 }
1006
1007                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1008                         # Show a warning if editing an interface message
1009                         $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
1010                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1011                         # Is the title semi-protected?
1012                         if( $this->mTitle->isSemiProtected() ) {
1013                                 $notice = wfMsg( 'semiprotectedpagewarning' );
1014                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
1015                                         $notice = '';
1016                         } else {
1017                         # Then it must be protected based on static groups (regular)
1018                                 $notice = wfMsg( 'protectedpagewarning' );
1019                         }
1020                         $wgOut->addWikiText( $notice );
1021                 }
1022                 if ( $this->mTitle->isCascadeProtected() ) {
1023                         # Is this page under cascading protection from some source pages?
1024                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1025                         if ( count($cascadeSources) > 0 ) {
1026                                 # Explain, and list the titles responsible
1027                                 $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
1028                                 foreach( $cascadeSources as $id => $page )
1029                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1030                                 }
1031                         $wgOut->addWikiText( $notice );
1032                 }
1033
1034                 if ( $this->kblength === false ) {
1035                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1036                 }
1037                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1038                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
1039                 } elseif( $this->kblength > 29 ) {
1040                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
1041                 }
1042
1043                 #need to parse the preview early so that we know which templates are used,
1044                 #otherwise users with "show preview after edit box" will get a blank list
1045                 if ( $this->formtype == 'preview' ) {
1046                         $previewOutput = $this->getPreviewText();
1047                 }
1048
1049                 $rows = $wgUser->getIntOption( 'rows' );
1050                 $cols = $wgUser->getIntOption( 'cols' );
1051
1052                 $ew = $wgUser->getOption( 'editwidth' );
1053                 if ( $ew ) $ew = " style=\"width:100%\"";
1054                 else $ew = '';
1055
1056                 $q = 'action=submit';
1057                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1058                 $action = $this->mTitle->escapeLocalURL( $q );
1059
1060                 $summary = wfMsg('summary');
1061                 $subject = wfMsg('subject');
1062
1063                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
1064                                 wfMsgExt('cancel', array('parseinline')) );
1065                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1066                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1067                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1068                         htmlspecialchars( wfMsg( 'newwindow' ) );
1069
1070                 global $wgRightsText;
1071                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
1072                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
1073                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1074                                 $wgRightsText ) . "\n</div>";
1075
1076                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1077                         # prepare toolbar for edit buttons
1078                         $toolbar = $this->getEditToolbar();
1079                 } else {
1080                         $toolbar = '';
1081                 }
1082
1083                 // activate checkboxes if user wants them to be always active
1084                 if( !$this->preview && !$this->diff ) {
1085                         # Sort out the "watch" checkbox
1086                         if( $wgUser->getOption( 'watchdefault' ) ) {
1087                                 # Watch all edits
1088                                 $this->watchthis = true;
1089                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1090                                 # Watch creations
1091                                 $this->watchthis = true;
1092                         } elseif( $this->mTitle->userIsWatching() ) {
1093                                 # Already watched
1094                                 $this->watchthis = true;
1095                         }
1096
1097                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1098                 }
1099
1100                 $wgOut->addHTML( $this->editFormPageTop );
1101
1102                 if ( $wgUser->getOption( 'previewontop' ) ) {
1103
1104                         if ( 'preview' == $this->formtype ) {
1105                                 $this->showPreview( $previewOutput );
1106                         } else {
1107                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1108                         }
1109
1110                         if ( 'diff' == $this->formtype ) {
1111                                 $this->showDiff();
1112                         }
1113                 }
1114
1115
1116                 $wgOut->addHTML( $this->editFormTextTop );
1117
1118                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1119                 # Otherwise, show a summary field at the bottom
1120                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1121                 if( $this->section == 'new' ) {
1122                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1123                         $editsummary = '';
1124                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1125                         $summarypreview = '';
1126                 } else {
1127                         $commentsubject = '';
1128                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1129                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1130                         $subjectpreview = '';
1131                 }
1132
1133                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1134                 if( !$this->preview && !$this->diff ) {
1135                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1136                 }
1137                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1138                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1139
1140                 global $wgUseMetadataEdit ;
1141                 if ( $wgUseMetadataEdit ) {
1142                         $metadata = $this->mMetaData ;
1143                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1144                         $top = wfMsgWikiHtml( 'metadata_help' );
1145                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1146                 }
1147                 else $metadata = "" ;
1148
1149                 $hidden = '';
1150                 $recreate = '';
1151                 if ($this->deletedSinceEdit) {
1152                         if ( 'save' != $this->formtype ) {
1153                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
1154                         } else {
1155                                 // Hide the toolbar and edit area, use can click preview to get it back
1156                                 // Add an confirmation checkbox and explanation.
1157                                 $toolbar = '';
1158                                 $hidden = 'type="hidden" style="display:none;"';
1159                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1160                                 $recreate .=
1161                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1162                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1163                         }
1164                 }
1165
1166                 $tabindex = 2;
1167
1168                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1169                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1170
1171                 $checkboxhtml = implode( $checkboxes, "\n" );
1172
1173                 $buttons = $this->getEditButtons( $tabindex );
1174                 $buttonshtml = implode( $buttons, "\n" );
1175
1176                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1177                         ? '' : Xml::hidden( 'safemode', '1' );
1178
1179                 $wgOut->addHTML( <<<END
1180 {$toolbar}
1181 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1182 END
1183 );
1184
1185                 if( is_callable( $formCallback ) ) {
1186                         call_user_func_array( $formCallback, array( &$wgOut ) );
1187                 }
1188
1189                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1190
1191                 // Put these up at the top to ensure they aren't lost on early form submission
1192                 $wgOut->addHTML( "
1193 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1194 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1195 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1196 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1197
1198                 $wgOut->addHTML( <<<END
1199 $recreate
1200 {$commentsubject}
1201 {$subjectpreview}
1202 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1203 cols='{$cols}'{$ew} $hidden>
1204 END
1205 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1206 "
1207 </textarea>
1208                 " );
1209
1210                 $wgOut->addWikiText( $copywarn );
1211                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1212                 $wgOut->addHTML( "
1213 {$metadata}
1214 {$editsummary}
1215 {$summarypreview}
1216 {$checkboxhtml}
1217 {$safemodehtml}
1218 ");
1219
1220                 $wgOut->addHTML(
1221 "<div class='editButtons'>
1222 {$buttonshtml}
1223         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1224 </div><!-- editButtons -->
1225 </div><!-- editOptions -->");
1226
1227                 $wgOut->addHtml( '<div class="mw-editTools">' );
1228                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1229                 $wgOut->addHtml( '</div>' );
1230
1231                 $wgOut->addHTML( $this->editFormTextAfterTools );
1232
1233                 $wgOut->addHTML( "
1234 <div class='templatesUsed'>
1235 {$formattedtemplates}
1236 </div>
1237 " );
1238
1239                 /**
1240                  * To make it harder for someone to slip a user a page
1241                  * which submits an edit form to the wiki without their
1242                  * knowledge, a random token is associated with the login
1243                  * session. If it's not passed back with the submission,
1244                  * we won't save the page, or render user JavaScript and
1245                  * CSS previews.
1246                  *
1247                  * For anon editors, who may not have a session, we just
1248                  * include the constant suffix to prevent editing from
1249                  * broken text-mangling proxies.
1250                  */
1251                 $token = htmlspecialchars( $wgUser->editToken() );
1252                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1253
1254
1255                 # If a blank edit summary was previously provided, and the appropriate
1256                 # user preference is active, pass a hidden tag here. This will stop the
1257                 # user being bounced back more than once in the event that a summary
1258                 # is not required.
1259                 if( $this->missingSummary ) {
1260                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1261                 }
1262
1263                 # For a bit more sophisticated detection of blank summaries, hash the
1264                 # automatic one and pass that in a hidden field.
1265                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1266                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1267
1268                 if ( $this->isConflict ) {
1269                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1270
1271                         $de = new DifferenceEngine( $this->mTitle );
1272                         $de->setText( $this->textbox2, $this->textbox1 );
1273                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1274
1275                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1276                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1277                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1278                 }
1279                 $wgOut->addHTML( $this->editFormTextBottom );
1280                 $wgOut->addHTML( "</form>\n" );
1281                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1282
1283                         if ( $this->formtype == 'preview') {
1284                                 $this->showPreview( $previewOutput );
1285                         } else {
1286                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1287                         }
1288
1289                         if ( $this->formtype == 'diff') {
1290                                 $this->showDiff();
1291                         }
1292
1293                 }
1294
1295                 wfProfileOut( $fname );
1296         }
1297
1298         /**
1299          * Append preview output to $wgOut.
1300          * Includes category rendering if this is a category page.
1301          *
1302          * @param string $text The HTML to be output for the preview.
1303          */
1304         private function showPreview( $text ) {
1305                 global $wgOut;
1306
1307                 $wgOut->addHTML( '<div id="wikiPreview">' );
1308                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1309                         $this->mArticle->openShowCategory();
1310                 }
1311                 $wgOut->addHTML( $text );
1312                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1313                         $this->mArticle->closeShowCategory();
1314                 }
1315                 $wgOut->addHTML( '</div>' );
1316         }
1317
1318         /**
1319          * Live Preview lets us fetch rendered preview page content and
1320          * add it to the page without refreshing the whole page.
1321          * If not supported by the browser it will fall through to the normal form
1322          * submission method.
1323          *
1324          * This function outputs a script tag to support live preview, and
1325          * returns an onclick handler which should be added to the attributes
1326          * of the preview button
1327          */
1328         function doLivePreviewScript() {
1329                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1330                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1331                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1332                         '"></script>' . "\n" );
1333                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1334                 return "return !livePreview(" .
1335                         "getElementById('wikiPreview')," .
1336                         "editform.wpTextbox1.value," .
1337                         '"' . $liveAction . '"' . ")";
1338         }
1339
1340         function getLastDelete() {
1341                 $dbr = wfGetDB( DB_SLAVE );
1342                 $fname = 'EditPage::getLastDelete';
1343                 $res = $dbr->select(
1344                         array( 'logging', 'user' ),
1345                         array( 'log_type',
1346                                'log_action',
1347                                'log_timestamp',
1348                                'log_user',
1349                                'log_namespace',
1350                                'log_title',
1351                                'log_comment',
1352                                'log_params',
1353                                'user_name', ),
1354                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1355                                'log_title' => $this->mTitle->getDBkey(),
1356                                'log_type' => 'delete',
1357                                'log_action' => 'delete',
1358                                'user_id=log_user' ),
1359                         $fname,
1360                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1361
1362                 if($dbr->numRows($res) == 1) {
1363                         while ( $x = $dbr->fetchObject ( $res ) )
1364                                 $data = $x;
1365                         $dbr->freeResult ( $res ) ;
1366                 } else {
1367                         $data = null;
1368                 }
1369                 return $data;
1370         }
1371
1372         /**
1373          * @todo document
1374          */
1375         function getPreviewText() {
1376                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1377
1378                 $fname = 'EditPage::getPreviewText';
1379                 wfProfileIn( $fname );
1380
1381                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1382                         if ( $this->mTokenOkExceptSuffix ) {
1383                                 $msg = 'token_suffix_mismatch';
1384                         } else {
1385                                 $msg = 'session_fail_preview';
1386                         }
1387                 } else {
1388                         $msg = 'previewnote';
1389                 }
1390                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1391                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1392                 if ( $this->isConflict ) {
1393                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1394                 }
1395
1396                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1397                 $parserOptions->setEditSection( false );
1398
1399                 global $wgRawHtml;
1400                 if( $wgRawHtml && !$this->mTokenOk ) {
1401                         // Could be an offsite preview attempt. This is very unsafe if
1402                         // HTML is enabled, as it could be an attack.
1403                         return $wgOut->parse( "<div class='previewnote'>" .
1404                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1405                 }
1406
1407                 # don't parse user css/js, show message about preview
1408                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1409
1410                 if ( $this->isCssJsSubpage ) {
1411                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1412                                 $previewtext = wfMsg('usercsspreview');
1413                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1414                                 $previewtext = wfMsg('userjspreview');
1415                         }
1416                         $parserOptions->setTidy(true);
1417                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1418                         $wgOut->addHTML( $parserOutput->mText );
1419                         wfProfileOut( $fname );
1420                         return $previewhead;
1421                 } else {
1422                         $toparse = $this->textbox1;
1423
1424                         # If we're adding a comment, we need to show the
1425                         # summary as the headline
1426                         if($this->section=="new" && $this->summary!="") {
1427                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1428                         }
1429
1430                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1431                         $parserOptions->setTidy(true);
1432                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1433                                         $wgTitle, $parserOptions );
1434
1435                         $previewHTML = $parserOutput->getText();
1436                         $wgOut->addParserOutputNoText( $parserOutput );
1437
1438                         # ParserOutput might have altered the page title, so reset it
1439                         $wgOut->setPageTitle( wfMsg( 'editing', $this->mTitle->getPrefixedText() ) );
1440
1441                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1442                                 foreach ( array_keys( $template ) as $dbk)
1443                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1444
1445                         wfProfileOut( $fname );
1446                         return $previewhead . $previewHTML;
1447                 }
1448         }
1449
1450         /**
1451          * Call the stock "user is blocked" page
1452          */
1453         function blockedPage() {
1454                 global $wgOut, $wgUser;
1455                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1456
1457                 # If the user made changes, preserve them when showing the markup
1458                 # (This happens when a user is blocked during edit, for instance)
1459                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1460                 if( $first ) {
1461                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1462                 } else {
1463                         $source = $this->textbox1;
1464                 }
1465
1466                 # Spit out the source or the user's modified version
1467                 if( $source !== false ) {
1468                         $rows = $wgUser->getOption( 'rows' );
1469                         $cols = $wgUser->getOption( 'cols' );
1470                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1471                         $wgOut->addHtml( '<hr />' );
1472                         $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
1473                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1474                 }
1475         }
1476
1477         /**
1478          * Produce the stock "please login to edit pages" page
1479          */
1480         function userNotLoggedInPage() {
1481                 global $wgUser, $wgOut;
1482                 $skin = $wgUser->getSkin();
1483
1484                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1485                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1486
1487                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1488                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1489                 $wgOut->setArticleRelated( false );
1490
1491                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1492                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1493         }
1494
1495         /**
1496          * Creates a basic error page which informs the user that
1497          * they have to validate their email address before being
1498          * allowed to edit.
1499          */
1500         function userNotConfirmedPage() {
1501                 global $wgOut;
1502
1503                 $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
1504                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1505                 $wgOut->setArticleRelated( false );
1506
1507                 $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
1508                 $wgOut->returnToMain( false );
1509         }
1510
1511         /**
1512          * Creates a basic error page which informs the user that
1513          * they have attempted to edit a nonexistant section.
1514          */
1515         function noSuchSectionPage() {
1516                 global $wgOut;
1517
1518                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1519                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1520                 $wgOut->setArticleRelated( false );
1521
1522                 $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
1523                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1524         }
1525
1526         /**
1527          * Produce the stock "your edit contains spam" page
1528          *
1529          * @param $match Text which triggered one or more filters
1530          */
1531         function spamPage( $match = false ) {
1532                 global $wgOut;
1533
1534                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1535                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1536                 $wgOut->setArticleRelated( false );
1537
1538                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1539                 if ( $match )
1540                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1541
1542                 $wgOut->returnToMain( false );
1543         }
1544
1545         /**
1546          * @private
1547          * @todo document
1548          */
1549         function mergeChangesInto( &$editText ){
1550                 $fname = 'EditPage::mergeChangesInto';
1551                 wfProfileIn( $fname );
1552
1553                 $db = wfGetDB( DB_MASTER );
1554
1555                 // This is the revision the editor started from
1556                 $baseRevision = Revision::loadFromTimestamp(
1557                         $db, $this->mArticle->mTitle, $this->edittime );
1558                 if( is_null( $baseRevision ) ) {
1559                         wfProfileOut( $fname );
1560                         return false;
1561                 }
1562                 $baseText = $baseRevision->getText();
1563
1564                 // The current state, we want to merge updates into it
1565                 $currentRevision =  Revision::loadFromTitle(
1566                         $db, $this->mArticle->mTitle );
1567                 if( is_null( $currentRevision ) ) {
1568                         wfProfileOut( $fname );
1569                         return false;
1570                 }
1571                 $currentText = $currentRevision->getText();
1572
1573                 $result = '';
1574                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1575                         $editText = $result;
1576                         wfProfileOut( $fname );
1577                         return true;
1578                 } else {
1579                         wfProfileOut( $fname );
1580                         return false;
1581                 }
1582         }
1583
1584         /**
1585          * Check if the browser is on a blacklist of user-agents known to
1586          * mangle UTF-8 data on form submission. Returns true if Unicode
1587          * should make it through, false if it's known to be a problem.
1588          * @return bool
1589          * @private
1590          */
1591         function checkUnicodeCompliantBrowser() {
1592                 global $wgBrowserBlackList;
1593                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1594                         // No User-Agent header sent? Trust it by default...
1595                         return true;
1596                 }
1597                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1598                 foreach ( $wgBrowserBlackList as $browser ) {
1599                         if ( preg_match($browser, $currentbrowser) ) {
1600                                 return false;
1601                         }
1602                 }
1603                 return true;
1604         }
1605
1606         /**
1607          * Format an anchor fragment as it would appear for a given section name
1608          * @param string $text
1609          * @return string
1610          * @private
1611          */
1612         function sectionAnchor( $text ) {
1613                 $headline = Sanitizer::decodeCharReferences( $text );
1614                 # strip out HTML
1615                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
1616                 $headline = trim( $headline );
1617                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
1618                 $replacearray = array(
1619                         '%3A' => ':',
1620                         '%' => '.'
1621                 );
1622                 return str_replace(
1623                         array_keys( $replacearray ),
1624                         array_values( $replacearray ),
1625                         $sectionanchor );
1626         }
1627
1628         /**
1629          * Shows a bulletin board style toolbar for common editing functions.
1630          * It can be disabled in the user preferences.
1631          * The necessary JavaScript code can be found in style/wikibits.js.
1632          */
1633         function getEditToolbar() {
1634                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1635
1636                 /**
1637                  * toolarray an array of arrays which each include the filename of
1638                  * the button image (without path), the opening tag, the closing tag,
1639                  * and optionally a sample text that is inserted between the two when no
1640                  * selection is highlighted.
1641                  * The tip text is shown when the user moves the mouse over the button.
1642                  *
1643                  * Already here are accesskeys (key), which are not used yet until someone
1644                  * can figure out a way to make them work in IE. However, we should make
1645                  * sure these keys are not defined on the edit page.
1646                  */
1647                 $toolarray = array(
1648                         array(  'image' => 'button_bold.png',
1649                                 'id'    => 'mw-editbutton-bold',
1650                                 'open'  => '\\\'\\\'\\\'',
1651                                 'close' => '\\\'\\\'\\\'',
1652                                 'sample'=> wfMsg('bold_sample'),
1653                                 'tip'   => wfMsg('bold_tip'),
1654                                 'key'   => 'B'
1655                         ),
1656                         array(  'image' => 'button_italic.png',
1657                                 'id'    => 'mw-editbutton-italic',
1658                                 'open'  => '\\\'\\\'',
1659                                 'close' => '\\\'\\\'',
1660                                 'sample'=> wfMsg('italic_sample'),
1661                                 'tip'   => wfMsg('italic_tip'),
1662                                 'key'   => 'I'
1663                         ),
1664                         array(  'image' => 'button_link.png',
1665                                 'id'    => 'mw-editbutton-link',
1666                                 'open'  => '[[',
1667                                 'close' => ']]',
1668                                 'sample'=> wfMsg('link_sample'),
1669                                 'tip'   => wfMsg('link_tip'),
1670                                 'key'   => 'L'
1671                         ),
1672                         array(  'image' => 'button_extlink.png',
1673                                 'id'    => 'mw-editbutton-extlink',
1674                                 'open'  => '[',
1675                                 'close' => ']',
1676                                 'sample'=> wfMsg('extlink_sample'),
1677                                 'tip'   => wfMsg('extlink_tip'),
1678                                 'key'   => 'X'
1679                         ),
1680                         array(  'image' => 'button_headline.png',
1681                                 'id'    => 'mw-editbutton-headline',
1682                                 'open'  => "\\n== ",
1683                                 'close' => " ==\\n",
1684                                 'sample'=> wfMsg('headline_sample'),
1685                                 'tip'   => wfMsg('headline_tip'),
1686                                 'key'   => 'H'
1687                         ),
1688                         array(  'image' => 'button_image.png',
1689                                 'id'    => 'mw-editbutton-image',
1690                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1691                                 'close' => ']]',
1692                                 'sample'=> wfMsg('image_sample'),
1693                                 'tip'   => wfMsg('image_tip'),
1694                                 'key'   => 'D'
1695                         ),
1696                         array(  'image' => 'button_media.png',
1697                                 'id'    => 'mw-editbutton-media',
1698                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1699                                 'close' => ']]',
1700                                 'sample'=> wfMsg('media_sample'),
1701                                 'tip'   => wfMsg('media_tip'),
1702                                 'key'   => 'M'
1703                         ),
1704                         array(  'image' => 'button_math.png',
1705                                 'id'    => 'mw-editbutton-math',
1706                                 'open'  => "<math>",
1707                                 'close' => "<\\/math>",
1708                                 'sample'=> wfMsg('math_sample'),
1709                                 'tip'   => wfMsg('math_tip'),
1710                                 'key'   => 'C'
1711                         ),
1712                         array(  'image' => 'button_nowiki.png',
1713                                 'id'    => 'mw-editbutton-nowiki',
1714                                 'open'  => "<nowiki>",
1715                                 'close' => "<\\/nowiki>",
1716                                 'sample'=> wfMsg('nowiki_sample'),
1717                                 'tip'   => wfMsg('nowiki_tip'),
1718                                 'key'   => 'N'
1719                         ),
1720                         array(  'image' => 'button_sig.png',
1721                                 'id'    => 'mw-editbutton-signature',
1722                                 'open'  => '--~~~~',
1723                                 'close' => '',
1724                                 'sample'=> '',
1725                                 'tip'   => wfMsg('sig_tip'),
1726                                 'key'   => 'Y'
1727                         ),
1728                         array(  'image' => 'button_hr.png',
1729                                 'id'    => 'mw-editbutton-hr',
1730                                 'open'  => "\\n----\\n",
1731                                 'close' => '',
1732                                 'sample'=> '',
1733                                 'tip'   => wfMsg('hr_tip'),
1734                                 'key'   => 'R'
1735                         )
1736                 );
1737                 $toolbar = "<div id='toolbar'>\n";
1738                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1739
1740                 foreach($toolarray as $tool) {
1741
1742                         $cssId = $tool['id'];
1743                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1744                         $open=$tool['open'];
1745                         $close=$tool['close'];
1746                         $sample = wfEscapeJsString( $tool['sample'] );
1747
1748                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1749                         // Older browsers show a "speedtip" type message only for ALT.
1750                         // Ideally these should be different, realistically they
1751                         // probably don't need to be.
1752                         $tip = wfEscapeJsString( $tool['tip'] );
1753
1754                         #$key = $tool["key"];
1755
1756                         $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
1757                 }
1758
1759                 $toolbar.="/*]]>*/\n</script>";
1760                 $toolbar.="\n</div>";
1761                 return $toolbar;
1762         }
1763
1764         /**
1765          * Returns an array of html code of the following checkboxes:
1766          * minor and watch
1767          *
1768          * @param $tabindex Current tabindex
1769          * @param $skin Skin object
1770          * @param $checked Array of checkbox => bool, where bool indicates the checked
1771          *                 status of the checkbox
1772          *
1773          * @return array
1774          */
1775         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1776                 global $wgUser;
1777
1778                 $checkboxes = array();
1779
1780                 $checkboxes['minor'] = '';
1781                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1782                 if ( $wgUser->isAllowed('minoredit') ) {
1783                         $attribs = array(
1784                                 'tabindex'  => ++$tabindex,
1785                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1786                                 'id'        => 'wpMinoredit',
1787                         );
1788                         $checkboxes['minor'] =
1789                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1790                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1791                 }
1792
1793                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1794                 $checkboxes['watch'] = '';
1795                 if ( $wgUser->isLoggedIn() ) {
1796                         $attribs = array(
1797                                 'tabindex'  => ++$tabindex,
1798                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1799                                 'id'        => 'wpWatchthis',
1800                         );
1801                         $checkboxes['watch'] =
1802                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1803                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1804                 }
1805                 return $checkboxes;
1806         }
1807
1808         /**
1809          * Returns an array of html code of the following buttons:
1810          * save, diff, preview and live
1811          *
1812          * @param $tabindex Current tabindex
1813          *
1814          * @return array
1815          */
1816         public function getEditButtons(&$tabindex) {
1817                 global $wgLivePreview, $wgUser;
1818
1819                 $buttons = array();
1820
1821                 $temp = array(
1822                         'id'        => 'wpSave',
1823                         'name'      => 'wpSave',
1824                         'type'      => 'submit',
1825                         'tabindex'  => ++$tabindex,
1826                         'value'     => wfMsg('savearticle'),
1827                         'accesskey' => wfMsg('accesskey-save'),
1828                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1829                 );
1830                 $buttons['save'] = wfElement('input', $temp, '');
1831
1832                 ++$tabindex; // use the same for preview and live preview
1833                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1834                         $temp = array(
1835                                 'id'        => 'wpPreview',
1836                                 'name'      => 'wpPreview',
1837                                 'type'      => 'submit',
1838                                 'tabindex'  => $tabindex,
1839                                 'value'     => wfMsg('showpreview'),
1840                                 'accesskey' => '',
1841                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1842                                 'style'     => 'display: none;',
1843                         );
1844                         $buttons['preview'] = wfElement('input', $temp, '');
1845
1846                         $temp = array(
1847                                 'id'        => 'wpLivePreview',
1848                                 'name'      => 'wpLivePreview',
1849                                 'type'      => 'submit',
1850                                 'tabindex'  => $tabindex,
1851                                 'value'     => wfMsg('showlivepreview'),
1852                                 'accesskey' => wfMsg('accesskey-preview'),
1853                                 'title'     => '',
1854                                 'onclick'   => $this->doLivePreviewScript(),
1855                         );
1856                         $buttons['live'] = wfElement('input', $temp, '');
1857                 } else {
1858                         $temp = array(
1859                                 'id'        => 'wpPreview',
1860                                 'name'      => 'wpPreview',
1861                                 'type'      => 'submit',
1862                                 'tabindex'  => $tabindex,
1863                                 'value'     => wfMsg('showpreview'),
1864                                 'accesskey' => wfMsg('accesskey-preview'),
1865                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1866                         );
1867                         $buttons['preview'] = wfElement('input', $temp, '');
1868                         $buttons['live'] = '';
1869                 }
1870
1871                 $temp = array(
1872                         'id'        => 'wpDiff',
1873                         'name'      => 'wpDiff',
1874                         'type'      => 'submit',
1875                         'tabindex'  => ++$tabindex,
1876                         'value'     => wfMsg('showdiff'),
1877                         'accesskey' => wfMsg('accesskey-diff'),
1878                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1879                 );
1880                 $buttons['diff'] = wfElement('input', $temp, '');
1881
1882                 return $buttons;
1883         }
1884
1885         /**
1886          * Output preview text only. This can be sucked into the edit page
1887          * via JavaScript, and saves the server time rendering the skin as
1888          * well as theoretically being more robust on the client (doesn't
1889          * disturb the edit box's undo history, won't eat your text on
1890          * failure, etc).
1891          *
1892          * @todo This doesn't include category or interlanguage links.
1893          *       Would need to enhance it a bit, <s>maybe wrap them in XML
1894          *       or something...</s> that might also require more skin
1895          *       initialization, so check whether that's a problem.
1896          */
1897         function livePreview() {
1898                 global $wgOut;
1899                 $wgOut->disable();
1900                 header( 'Content-type: text/xml; charset=utf-8' );
1901                 header( 'Cache-control: no-cache' );
1902
1903                 $s =
1904                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
1905                 Xml::openElement( 'livepreview' ) .
1906                 Xml::element( 'preview', null, $this->getPreviewText() ) .
1907                 Xml::element( 'br', array( 'style' => 'clear: both;' ) ) .
1908                 Xml::closeElement( 'livepreview' );
1909                 echo $s;
1910         }
1911
1912
1913         /**
1914          * Get a diff between the current contents of the edit box and the
1915          * version of the page we're editing from.
1916          *
1917          * If this is a section edit, we'll replace the section as for final
1918          * save and then make a comparison.
1919          */
1920         function showDiff() {
1921                 $oldtext = $this->mArticle->fetchContent();
1922                 $newtext = $this->mArticle->replaceSection(
1923                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1924                 $newtext = $this->mArticle->preSaveTransform( $newtext );
1925                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
1926                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
1927                 if ( $oldtext !== false  || $newtext != '' ) {
1928                         $de = new DifferenceEngine( $this->mTitle );
1929                         $de->setText( $oldtext, $newtext );
1930                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1931                         $de->showDiffStyle();
1932                 } else {
1933                         $difftext = '';
1934                 }
1935
1936                 global $wgOut;
1937                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
1938         }
1939
1940         /**
1941          * Filter an input field through a Unicode de-armoring process if it
1942          * came from an old browser with known broken Unicode editing issues.
1943          *
1944          * @param WebRequest $request
1945          * @param string $field
1946          * @return string
1947          * @private
1948          */
1949         function safeUnicodeInput( $request, $field ) {
1950                 $text = rtrim( $request->getText( $field ) );
1951                 return $request->getBool( 'safemode' )
1952                         ? $this->unmakesafe( $text )
1953                         : $text;
1954         }
1955
1956         /**
1957          * Filter an output field through a Unicode armoring process if it is
1958          * going to an old browser with known broken Unicode editing issues.
1959          *
1960          * @param string $text
1961          * @return string
1962          * @private
1963          */
1964         function safeUnicodeOutput( $text ) {
1965                 global $wgContLang;
1966                 $codedText = $wgContLang->recodeForEdit( $text );
1967                 return $this->checkUnicodeCompliantBrowser()
1968                         ? $codedText
1969                         : $this->makesafe( $codedText );
1970         }
1971
1972         /**
1973          * A number of web browsers are known to corrupt non-ASCII characters
1974          * in a UTF-8 text editing environment. To protect against this,
1975          * detected browsers will be served an armored version of the text,
1976          * with non-ASCII chars converted to numeric HTML character references.
1977          *
1978          * Preexisting such character references will have a 0 added to them
1979          * to ensure that round-trips do not alter the original data.
1980          *
1981          * @param string $invalue
1982          * @return string
1983          * @private
1984          */
1985         function makesafe( $invalue ) {
1986                 // Armor existing references for reversability.
1987                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1988
1989                 $bytesleft = 0;
1990                 $result = "";
1991                 $working = 0;
1992                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1993                         $bytevalue = ord( $invalue{$i} );
1994                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1995                                 $result .= chr( $bytevalue );
1996                                 $bytesleft = 0;
1997                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
1998                                 $working = $working << 6;
1999                                 $working += ($bytevalue & 0x3F);
2000                                 $bytesleft--;
2001                                 if( $bytesleft <= 0 ) {
2002                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2003                                 }
2004                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2005                                 $working = $bytevalue & 0x1F;
2006                                 $bytesleft = 1;
2007                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2008                                 $working = $bytevalue & 0x0F;
2009                                 $bytesleft = 2;
2010                         } else { //1111 0xxx
2011                                 $working = $bytevalue & 0x07;
2012                                 $bytesleft = 3;
2013                         }
2014                 }
2015                 return $result;
2016         }
2017
2018         /**
2019          * Reverse the previously applied transliteration of non-ASCII characters
2020          * back to UTF-8. Used to protect data from corruption by broken web browsers
2021          * as listed in $wgBrowserBlackList.
2022          *
2023          * @param string $invalue
2024          * @return string
2025          * @private
2026          */
2027         function unmakesafe( $invalue ) {
2028                 $result = "";
2029                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2030                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2031                                 $i += 3;
2032                                 $hexstring = "";
2033                                 do {
2034                                         $hexstring .= $invalue{$i};
2035                                         $i++;
2036                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2037
2038                                 // Do some sanity checks. These aren't needed for reversability,
2039                                 // but should help keep the breakage down if the editor
2040                                 // breaks one of the entities whilst editing.
2041                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2042                                         $codepoint = hexdec($hexstring);
2043                                         $result .= codepointToUtf8( $codepoint );
2044                                 } else {
2045                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2046                                 }
2047                         } else {
2048                                 $result .= substr( $invalue, $i, 1 );
2049                         }
2050                 }
2051                 // reverse the transform that we made for reversability reasons.
2052                 return strtr( $result, array( "&#x0" => "&#x" ) );
2053         }
2054
2055         function noCreatePermission() {
2056                 global $wgOut;
2057                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2058                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
2059         }
2060
2061         /**
2062          * If there are rows in the deletion log for this page, show them,
2063          * along with a nice little note for the user
2064          *
2065          * @param OutputPage $out
2066          */
2067         private function showDeletionLog( $out ) {
2068                 $title = $this->mArticle->getTitle();
2069                 $reader = new LogReader(
2070                         new FauxRequest(
2071                                 array(
2072                                         'page' => $title->getPrefixedText(),
2073                                         'type' => 'delete',
2074                                         )
2075                         )
2076                 );
2077                 if( $reader->hasRows() ) {
2078                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2079                         $out->addWikiText( wfMsg( 'recreate-deleted-warn' ) );
2080                         $viewer = new LogViewer( $reader );
2081                         $viewer->showList( $out );
2082                         $out->addHtml( '</div>' );
2083                 }
2084         }
2085
2086 }
2087
2088