includes/EditPage.php

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