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