includes/EditPage.php

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