includes/EditPage.php

   1 <?php
   2 /**
   3  * Contain the EditPage class
   4  * @package MediaWiki
   5  */
   6
   7 /**
   8  * Splitting edit page/HTML interface from Article...
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * @package MediaWiki
  14  */
  15
  16 class EditPage {
  17         var $mArticle;
  18         var $mTitle;
  19         var $mMetaData = '';
  20
  21         # Form values
  22         var $save = false, $preview = false, $diff = false;
  23         var $minoredit = false, $watchthis = false;
  24         var $textbox1 = '', $textbox2 = '', $summary = '';
  25         var $edittime = '', $section = '';
  26         var $oldid = 0;
  27
  28         /**
  29          * @todo document
  30          * @param $article
  31          */
  32         function EditPage( $article ) {
  33                 $this->mArticle =& $article;
  34                 global $wgTitle;
  35                 $this->mTitle =& $wgTitle;
  36         }
  37
  38         /**
  39          * This is the function that extracts metadata from the article body on the first view.
  40          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
  41          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
  42          */
  43         function extractMetaDataFromArticle () {
  44                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
  45                 $this->mMetaData = '' ;
  46                 if ( !$wgUseMetadataEdit ) return ;
  47                 if ( $wgMetadataWhitelist == '' ) return ;
  48                 $s = '' ;
  49                 $t = $this->mArticle->getContent ( true ) ;
  50
  51                 # MISSING : <nowiki> filtering
  52
  53                 # Categories and language links
  54                 $t = explode ( "\n" , $t ) ;
  55                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
  56                 $cat = $ll = array() ;
  57                 foreach ( $t AS $key => $x )
  58                 {
  59                         $y = trim ( strtolower ( $x ) ) ;
  60                         while ( substr ( $y , 0 , 2 ) == '[[' )
  61                         {
  62                                 $y = explode ( ']]' , trim ( $x ) ) ;
  63                                 $first = array_shift ( $y ) ;
  64                                 $first = explode ( ':' , $first ) ;
  65                                 $ns = array_shift ( $first ) ;
  66                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
  67                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
  68                                 {
  69                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
  70                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
  71                                         else $ll[] = $add ;
  72                                         $x = implode ( ']]' , $y ) ;
  73                                         $t[$key] = $x ;
  74                                         $y = trim ( strtolower ( $x ) ) ;
  75                                 }
  76                         }
  77                 }
  78                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
  79                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
  80                 $t = implode ( "\n" , $t ) ;
  81
  82                 # Load whitelist
  83                 $sat = array () ; # stand-alone-templates; must be lowercase
  84                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
  85                 $wl_article = new Article ( $wl_title ) ;
  86                 $wl = explode ( "\n" , $wl_article->getContent(true) ) ;
  87                 foreach ( $wl AS $x )
  88                 {
  89                         $isentry = false ;
  90                         $x = trim ( $x ) ;
  91                         while ( substr ( $x , 0 , 1 ) == '*' )
  92                         {
  93                                 $isentry = true ;
  94                                 $x = trim ( substr ( $x , 1 ) ) ;
  95                         }
  96                         if ( $isentry )
  97                         {
  98                                 $sat[] = strtolower ( $x ) ;
  99                         }
 100
 101                 }
 102
 103                 # Templates, but only some
 104                 $t = explode ( '{{' , $t ) ;
 105                 $tl = array () ;
 106                 foreach ( $t AS $key => $x )
 107                 {
 108                         $y = explode ( '}}' , $x , 2 ) ;
 109                         if ( count ( $y ) == 2 )
 110                         {
 111                                 $z = $y[0] ;
 112                                 $z = explode ( '|' , $z ) ;
 113                                 $tn = array_shift ( $z ) ;
 114                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 115                                 {
 116                                         $tl[] = '{{' . $y[0] . '}}' ;
 117                                         $t[$key] = $y[1] ;
 118                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 119                                 }
 120                                 else $t[$key] = '{{' . $x ;
 121                         }
 122                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 123                         else $t[$key] = $x ;
 124                 }
 125                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 126                 $t = implode ( '' , $t ) ;
 127
 128                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 129                 $this->mArticle->mContent = $t ;
 130                 $this->mMetaData = $s ;
 131         }
 132
 133         /**
 134          * This is the function that gets called for "action=edit".
 135          */
 136         function edit() {
 137                 global $wgOut, $wgUser, $wgRequest;
 138                 // this is not an article
 139                 $wgOut->setArticleFlag(false);
 140
 141                 $this->importFormData( $wgRequest );
 142
 143                 if( $this->live ) {
 144                         $this->livePreview();
 145                         return;
 146                 }
 147
 148                 if ( ! $this->mTitle->userCanEdit() ) {
 149                         $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
 150                         return;
 151                 }
 152                 if ( !$this->preview && !$this->diff && $wgUser->isBlockedFrom( $this->mTitle, !$this->save ) ) {
 153                         # When previewing, don't check blocked state - will get caught at save time.
 154                         # Also, check when starting edition is done against slave to improve performance.
 155                         $this->blockedIPpage();
 156                         return;
 157                 }
 158                 if ( !$wgUser->isAllowed('edit') ) {
 159                         if ( $wgUser->isAnon() ) {
 160                                 $this->userNotLoggedInPage();
 161                                 return;
 162                         } else {
 163                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
 164                                 return;
 165                         }
 166                 }
 167                 if ( wfReadOnly() ) {
 168                         if( $this->save || $this->preview ) {
 169                                 $this->editForm( 'preview' );
 170                         } else if ( $this->diff ) {
 171                                 $this->editForm( 'diff' );
 172                         } else {
 173                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ) );
 174                         }
 175                         return;
 176                 }
 177                 if ( $this->save ) {
 178                         $this->editForm( 'save' );
 179                 } else if ( $this->preview ) {
 180                         $this->editForm( 'preview' );
 181                 } else if ( $this->diff ) {
 182                         $this->editForm( 'diff' );
 183                 } else { # First time through
 184                         if( $this->previewOnOpen() ) {
 185                                 $this->editForm( 'preview', true );
 186                         } else {
 187                                 $this->extractMetaDataFromArticle () ;
 188                                 $this->editForm( 'initial', true );
 189                         }
 190                 }
 191         }
 192
 193         /**
 194          * Return true if this page should be previewed when the edit form
 195          * is initially opened.
 196          * @return bool
 197          * @access private
 198          */
 199         function previewOnOpen() {
 200                 global $wgUser;
 201                 return $wgUser->getOption( 'previewonfirst' ) ||
 202                         ( $this->mTitle->getNamespace() == NS_CATEGORY &&
 203                                 !$this->mTitle->exists() );
 204         }
 205
 206         /**
 207          * @todo document
 208          */
 209         function importFormData( &$request ) {
 210                 if( $request->wasPosted() ) {
 211                         # These fields need to be checked for encoding.
 212                         # Also remove trailing whitespace, but don't remove _initial_
 213                         # whitespace from the text boxes. This may be significant formatting.
 214                         $this->textbox1  = rtrim( $request->getText( 'wpTextbox1' ) );
 215                         $this->textbox2  = rtrim( $request->getText( 'wpTextbox2' ) );
 216                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 217                         $this->summary   =        $request->getText( 'wpSummary'  );
 218
 219                         $this->edittime = $request->getVal( 'wpEdittime' );
 220                         if( is_null( $this->edittime ) ) {
 221                                 # If the form is incomplete, force to preview.
 222                                 $this->preview  = true;
 223                         } else {
 224                                 if( $this->tokenOk( $request ) ) {
 225                                         # Some browsers will not report any submit button
 226                                         # if the user hits enter in the comment box.
 227                                         # The unmarked state will be assumed to be a save,
 228                                         # if the form seems otherwise complete.
 229                                         $this->preview = $request->getCheck( 'wpPreview' );
 230                                         $this->diff = $request->getCheck( 'wpDiff' );
 231                                 } else {
 232                                         # Page might be a hack attempt posted from
 233                                         # an external site. Preview instead of saving.
 234                                         $this->preview = true;
 235                                 }
 236                         }
 237                         $this->save    = ! ( $this->preview OR $this->diff );
 238                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 239                                 $this->edittime = null;
 240                         }
 241
 242                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 243                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 244                 } else {
 245                         # Not a posted form? Start with nothing.
 246                         $this->textbox1  = '';
 247                         $this->textbox2  = '';
 248                         $this->mMetaData = '';
 249                         $this->summary   = '';
 250                         $this->edittime  = '';
 251                         $this->preview   = false;
 252                         $this->save      = false;
 253                         $this->diff      = false;
 254                         $this->minoredit = false;
 255                         $this->watchthis = false;
 256                 }
 257
 258                 $this->oldid = $request->getInt( 'oldid' );
 259
 260                 # Section edit can come from either the form or a link
 261                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 262
 263                 $this->live = $request->getCheck( 'live' );
 264         }
 265
 266         /**
 267          * Make sure the form isn't faking a user's credentials.
 268          *
 269          * @param WebRequest $request
 270          * @return bool
 271          * @access private
 272          */
 273         function tokenOk( &$request ) {
 274                 global $wgUser;
 275                 if( $wgUser->isAnon() ) {
 276                         # Anonymous users may not have a session
 277                         # open. Don't tokenize.
 278                         return true;
 279                 } else {
 280                         return $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 281                 }
 282         }
 283
 284         function submit() {
 285                 $this->edit();
 286         }
 287
 288         /**
 289          * The edit form is self-submitting, so that when things like
 290          * preview and edit conflicts occur, we get the same form back
 291          * with the extra stuff added.  Only when the final submission
 292          * is made and all is well do we actually save and redirect to
 293          * the newly-edited page.
 294          *
 295          * @param string $formtype Type of form either : save, initial, diff or preview
 296          * @param bool $firsttime True to load form data from db
 297          */
 298         function editForm( $formtype, $firsttime = false ) {
 299                 global $wgOut, $wgUser;
 300                 global $wgLang, $wgContLang, $wgParser, $wgTitle;
 301                 global $wgAllowAnonymousMinor, $wgRequest;
 302                 global $wgSpamRegex, $wgFilterCallback;
 303
 304                 $sk = $wgUser->getSkin();
 305                 $isConflict = false;
 306                 // css / js subpages of user pages get a special treatment
 307                 $isCssJsSubpage = $wgTitle->isCssJsSubpage();
 308
 309                 if(!$this->mTitle->getArticleID()) { # new article
 310                         $editintro = $wgRequest->getText( 'editintro' );
 311                         $addstandardintro=true;
 312                         if($editintro) {
 313                                 $introtitle=Title::newFromText($editintro);
 314                                 if(isset($introtitle) && $introtitle->userCanRead()) {
 315                                         $rev=Revision::newFromTitle($introtitle);
 316                                         if($rev) {
 317                                                 $wgOut->addWikiText($rev->getText());
 318                                                 $addstandardintro=false;
 319                                         }
 320                                 }
 321                         }
 322                         if($addstandardintro) {
 323                                 $wgOut->addWikiText(wfmsg('newarticletext'));
 324                         }
 325                 }
 326
 327                 if( $this->mTitle->isTalkPage() ) {
 328                         $wgOut->addWikiText(wfmsg('talkpagetext'));
 329                 }
 330
 331                 # Attempt submission here.  This will check for edit conflicts,
 332                 # and redundantly check for locked database, blocked IPs, etc.
 333                 # that edit() already checked just in case someone tries to sneak
 334                 # in the back door with a hand-edited submission URL.
 335
 336                 if ( 'save' == $formtype ) {
 337                         # Reintegrate metadata
 338                         if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 339                         $this->mMetaData = '' ;
 340
 341                         # Check for spam
 342                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 343                                 $this->spamPage ( $matches[0] );
 344                                 return;
 345                         }
 346                         if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 347                                 # Error messages or other handling should be performed by the filter function
 348                                 return;
 349                         }
 350                         if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 351                                 # Check block state against master, thus 'false'.
 352                                 $this->blockedIPpage();
 353                                 return;
 354                         }
 355
 356                         if ( !$wgUser->isAllowed('edit') ) {
 357                                 if ( $wgUser->isAnon() ) {
 358                                 $this->userNotLoggedInPage();
 359                                 return;
 360                         }
 361                                 else {
 362                                         $wgOut->readOnlyPage();
 363                                         return;
 364                                 }
 365                         }
 366
 367                         if ( wfReadOnly() ) {
 368                                 $wgOut->readOnlyPage();
 369                                 return;
 370                         }
 371                         if ( $wgUser->pingLimiter() ) {
 372                                 $wgOut->rateLimited();
 373                                 return;
 374                         }
 375
 376                         # If article is new, insert it.
 377                         $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 378                         if ( 0 == $aid ) {
 379                                 # Don't save a new article if it's blank.
 380                                 if ( ( '' == $this->textbox1 ) ||
 381                                   ( wfMsg( 'newarticletext' ) == $this->textbox1 ) ) {
 382                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 383                                         return;
 384                                 }
 385                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$this->textbox1,
 386                                                            &$this->summary, &$this->minoredit, &$this->watchthis, NULL)))
 387                                 {
 388
 389                                         $isComment=($this->section=='new');
 390                                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 391                                                                                                            $this->minoredit, $this->watchthis, false, $isComment);
 392                                         wfRunHooks('ArticleSaveComplete', array(&$this->mArticle, &$wgUser, $this->textbox1,
 393                                                                                                                         $this->summary, $this->minoredit,
 394                                                                                                                         $this->watchthis, NULL));
 395                                 }
 396                                 return;
 397                         }
 398
 399                         # Article exists. Check for edit conflict.
 400
 401                         $this->mArticle->clear(); # Force reload of dates, etc.
 402                         $this->mArticle->forUpdate( true ); # Lock the article
 403
 404                         if( ( $this->section != 'new' ) &&
 405                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 406                                 $isConflict = true;
 407                         }
 408                         $userid = $wgUser->getID();
 409
 410                         if ( $isConflict) {
 411                                 wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 412                                         $this->mArticle->getTimestamp() . "'\n" );
 413                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 414                                         $this->section, $this->textbox1, $this->summary, $this->edittime);
 415                         }
 416                         else {
 417                                 wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 418                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 419                                         $this->section, $this->textbox1, $this->summary);
 420                         }
 421                         # Suppress edit conflict with self
 422
 423                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 424                                 wfDebug( "Suppressing edit conflict, same user.\n" );
 425                                 $isConflict = false;
 426                         } else {
 427                                 # switch from section editing to normal editing in edit conflict
 428                                 if($isConflict) {
 429                                         # Attempt merge
 430                                         if( $this->mergeChangesInto( $text ) ){
 431                                                 // Successful merge! Maybe we should tell the user the good news?
 432                                                 $isConflict = false;
 433                                                 wfDebug( "Suppressing edit conflict, successful merge.\n" );
 434                                         } else {
 435                                                 $this->section = '';
 436                                                 $this->textbox1 = $text;
 437                                                 wfDebug( "Keeping edit conflict, failed merge.\n" );
 438                                         }
 439                                 }
 440                         }
 441                         if ( ! $isConflict ) {
 442                                 # All's well
 443                                 $sectionanchor = '';
 444                                 if( $this->section == 'new' ) {
 445                                         if( $this->summary != '' ) {
 446                                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 447                                         }
 448                                 } elseif( $this->section != '' ) {
 449                                         # Try to get a section anchor from the section source, redirect to edited section if header found
 450                                         # XXX: might be better to integrate this into Article::getTextOfLastEditWithSectionReplacedOrAdded
 451                                         # for duplicate heading checking and maybe parsing
 452                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 453                                         # we can't deal with anchors, includes, html etc in the header for now,
 454                                         # headline would need to be parsed to improve this
 455                                         #if($hasmatch and strlen($matches[2]) > 0 and !preg_match( "/[\\['{<>]/", $matches[2])) {
 456                                         if($hasmatch and strlen($matches[2]) > 0) {
 457                                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 458                                         }
 459                                 }
 460
 461                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$text,
 462                                                                                                         &$this->summary, &$this->minoredit,
 463                                                                                                         &$this->watchthis, &$sectionanchor)))
 464                                 {
 465                                         # update the article here
 466                                         if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 467                                                                                                            $this->watchthis, '', $sectionanchor ))
 468                                         {
 469                                                 wfRunHooks('ArticleSaveComplete', array(&$this->mArticle, &$wgUser, $text,
 470                                                                                                                                 $this->summary, $this->minoredit,
 471                                                                                                                                 $this->watchthis, $sectionanchor));
 472                                                 return;
 473                                         }
 474                                         else
 475                                           $isConflict = true;
 476                                 }
 477                         }
 478                 }
 479                 # First time through: get contents, set time for conflict
 480                 # checking, etc.
 481
 482                 if ( 'initial' == $formtype || $firsttime ) {
 483                         $this->edittime = $this->mArticle->getTimestamp();
 484                         $this->textbox1 = $this->mArticle->getContent( true );
 485                         $this->summary = '';
 486                         $this->proxyCheck();
 487                 }
 488                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 489
 490                 # Enabled article-related sidebar, toplinks, etc.
 491                 $wgOut->setArticleRelated( true );
 492
 493                 if ( $isConflict ) {
 494                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 495                         $wgOut->setPageTitle( $s );
 496                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 497
 498                         $this->textbox2 = $this->textbox1;
 499                         $this->textbox1 = $this->mArticle->getContent( true );
 500                         $this->edittime = $this->mArticle->getTimestamp();
 501                 } else {
 502
 503                         if( $this->section != '' ) {
 504                                 if( $this->section == 'new' ) {
 505                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 506                                 } else {
 507                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 508                                         if( !$this->preview && !$this->diff ) {
 509                                                 preg_match( "/^(=+)(.+)\\1/mi",
 510                                                         $this->textbox1,
 511                                                         $matches );
 512                                                 if( !empty( $matches[2] ) ) {
 513                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 514                                                 }
 515                                         }
 516                                 }
 517                         } else {
 518                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 519                         }
 520                         $wgOut->setPageTitle( $s );
 521                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 522                                 $this->mArticle->setOldSubtitle();
 523                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 524                         }
 525                         if ( isset( $this->mArticle )
 526                              && isset( $this->mArticle->mRevision )
 527                              && !$this->mArticle->mRevision->isCurrent() ) {
 528                                 $this->mArticle->setOldSubtitle();
 529                                 $wgOut->addWikiText( wfMsg( 'editingold' ) );
 530                         }
 531                 }
 532
 533                 if( wfReadOnly() ) {
 534                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 535                 } else if ( $isCssJsSubpage and 'preview' != $formtype) {
 536                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ));
 537                 }
 538                 if( $this->mTitle->isProtected('edit') ) {
 539                         $wgOut->addWikiText( wfMsg( 'protectedpagewarning' ) );
 540                 }
 541
 542                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 543                 if( $kblength > 29 ) {
 544                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $kblength ) ) );
 545                 }
 546
 547                 $rows = $wgUser->getOption( 'rows' );
 548                 $cols = $wgUser->getOption( 'cols' );
 549
 550                 $ew = $wgUser->getOption( 'editwidth' );
 551                 if ( $ew ) $ew = " style=\"width:100%\"";
 552                 else $ew = '';
 553
 554                 $q = 'action=submit';
 555                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 556                 $action = $this->mTitle->escapeLocalURL( $q );
 557
 558                 $summary = wfMsg('summary');
 559                 $subject = wfMsg('subject');
 560                 $minor   = wfMsg('minoredit');
 561                 $watchthis = wfMsg ('watchthis');
 562                 $save = wfMsg('savearticle');
 563                 $prev = wfMsg('showpreview');
 564                 $diff = wfMsg('showdiff');
 565
 566                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 567                                 wfMsg('cancel') );
 568                 $edithelpurl = $sk->makeInternalOrExternalUrl( wfMsg( 'edithelppage' ));
 569                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 570                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 571                         htmlspecialchars( wfMsg( 'newwindow' ) );
 572
 573                 global $wgRightsText;
 574                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 575                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
 576                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
 577                                 $wgRightsText ) . "\n</div>";
 578
 579                 if( $wgUser->getOption('showtoolbar') and !$isCssJsSubpage ) {
 580                         # prepare toolbar for edit buttons
 581                         $toolbar = $this->getEditToolbar();
 582                 } else {
 583                         $toolbar = '';
 584                 }
 585
 586                 // activate checkboxes if user wants them to be always active
 587                 if( !$this->preview && !$this->diff ) {
 588                         if( $wgUser->getOption( 'watchdefault' ) ) $this->watchthis = true;
 589                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
 590
 591                         // activate checkbox also if user is already watching the page,
 592                         // require wpWatchthis to be unset so that second condition is not
 593                         // checked unnecessarily
 594                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 595                 }
 596
 597                 $minoredithtml = '';
 598
 599                 if ( $wgUser->isLoggedIn() || $wgAllowAnonymousMinor ) {
 600                         $minoredithtml =
 601                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 602                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 603                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 604                 }
 605
 606                 $watchhtml = '';
 607
 608                 if ( $wgUser->isLoggedIn() ) {
 609                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked='checked'":"").
 610                                 " accesskey='".wfMsg('accesskey-watch')."' id='wpWatchthis'  />".
 611                                 "<label for='wpWatchthis' title='".wfMsg('tooltip-watch')."'>{$watchthis}</label>";
 612                 }
 613
 614                 $checkboxhtml = $minoredithtml . $watchhtml . '<br />';
 615
 616                 $wgOut->addHTML( '<div id="wikiPreview">' );
 617                 if ( 'preview' == $formtype) {
 618                         $previewOutput = $this->getPreviewText( $isConflict, $isCssJsSubpage );
 619                         if ( $wgUser->getOption('previewontop' ) ) {
 620                                 $wgOut->addHTML( $previewOutput );
 621                                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
 622                                         $this->mArticle->closeShowCategory();
 623                                 }
 624                                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
 625                         }
 626                 }
 627                 $wgOut->addHTML( '</div>' );
 628                 if ( 'diff' == $formtype ) {
 629                         if ( $wgUser->getOption('previewontop' ) ) {
 630                                 $wgOut->addHTML( $this->getDiff() );
 631                         }
 632                 }
 633
 634
 635                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 636                 # Otherwise, show a summary field at the bottom
 637                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
 638                         if( $this->section == 'new' ) {
 639                                 $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 640                                 $editsummary = '';
 641                         } else {
 642                                 $commentsubject = '';
 643                                 $editsummary="{$summary}: <input tabindex='2' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 644                         }
 645
 646                 if( !$this->preview && !$this->diff ) {
 647                 # Don't select the edit box on preview; this interferes with seeing what's going on.
 648                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
 649                 }
 650                 # Prepare a list of templates used by this page
 651                 $templates = '';
 652                 $articleTemplates = $this->mArticle->getUsedTemplates();
 653                 if ( count( $articleTemplates ) > 0 ) {
 654                         $templates = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
 655                         foreach ( $articleTemplates as $tpl ) {
 656                                 if ( $titleObj = Title::makeTitle( NS_TEMPLATE, $tpl ) ) {
 657                                         $templates .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
 658                                 }
 659                         }
 660                         $templates .= '</ul>';
 661                 }
 662
 663                 global $wgLivePreview, $wgStylePath;
 664                 /**
 665                  * Live Preview lets us fetch rendered preview page content and
 666                  * add it to the page without refreshing the whole page.
 667                  * Set up the button for it; if not supported by the browser
 668                  * it will fall through to the normal form submission method.
 669                  */
 670                 if( $wgLivePreview ) {
 671                         global $wgJsMimeType;
 672                         $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
 673                                 htmlspecialchars( $wgStylePath . '/common/preview.js' ) .
 674                                 '"></script>' . "\n" );
 675                         $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
 676                         $liveOnclick = 'onclick="return !livePreview('.
 677                                 'getElementById(\'wikiPreview\'),' .
 678                                 'editform.wpTextbox1.value,' .
 679                                 htmlspecialchars( '"' . $liveAction . '"' ) . ')"';
 680                 } else {
 681                         $liveOnclick = '';
 682                 }
 683
 684                 global $wgUseMetadataEdit ;
 685                 if ( $wgUseMetadataEdit )
 686                 {
 687                         $metadata = $this->mMetaData ;
 688                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
 689                         $helppage = Title::newFromText ( wfmsg("metadata_page") ) ;
 690                         $top = str_replace ( "$1" , $helppage->getInternalURL() , wfmsg("metadata") ) ;
 691                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
 692                 }
 693                 else $metadata = "" ;
 694
 695
 696                 $wgOut->addHTML( <<<END
 697 {$toolbar}
 698 <form id="editform" name="editform" method="post" action="$action"
 699 enctype="multipart/form-data">
 700 {$commentsubject}
 701 <textarea tabindex='1' accesskey="," name="wpTextbox1" rows='{$rows}'
 702 cols='{$cols}'{$ew}>
 703 END
 704 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox1 ) ) .
 705 "
 706 </textarea>
 707 {$metadata}
 708 <br />{$editsummary}
 709 {$checkboxhtml}
 710 <input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 711 " title=\"".wfMsg('tooltip-save')."\"/>
 712 <input tabindex='6' id='wpPreview' type='submit' $liveOnclick value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 713 " title=\"".wfMsg('tooltip-preview')."\"/>
 714 <input tabindex='7' id='wpDiff' type='submit' value=\"{$diff}\" name=\"wpDiff\" accesskey=\"".wfMsg('accesskey-diff')."\"".
 715 " title=\"".wfMsg('tooltip-diff')."\"/>
 716 <em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}" );
 717                 $wgOut->addWikiText( $copywarn );
 718                 $wgOut->addHTML( "
 719 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 720 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 721
 722                 if ( $wgUser->isLoggedIn() ) {
 723                         /**
 724                          * To make it harder for someone to slip a user a page
 725                          * which submits an edit form to the wiki without their
 726                          * knowledge, a random token is associated with the login
 727                          * session. If it's not passed back with the submission,
 728                          * we won't save the page, or render user JavaScript and
 729                          * CSS previews.
 730                          */
 731                         $token = htmlspecialchars( $wgUser->editToken() );
 732                         $wgOut->addHTML( "
 733 <input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
 734                 }
 735
 736
 737                 if ( $isConflict ) {
 738                         require_once( "DifferenceEngine.php" );
 739                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
 740                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 741                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 742
 743                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
 744                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 745 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox2 ) ) .
 746 "
 747 </textarea>" );
 748                 }
 749                 $wgOut->addHTML( "</form>\n" );
 750                 if ( $formtype == 'preview' && !$wgUser->getOption( 'previewontop' ) ) {
 751                         $wgOut->addHTML( '<div id="wikiPreview">' . $previewOutput . '</div>' );
 752                 }
 753                 if ( $formtype == 'diff' && !$wgUser->getOption( 'previewontop' ) ) {
 754                         #$wgOut->addHTML( '<div id="wikiPreview">' . $difftext . '</div>' );
 755                         $wgOut->addHTML( $this->getDiff() );
 756                 }
 757         }
 758
 759         /**
 760          * @todo document
 761          */
 762         function getPreviewText( $isConflict, $isCssJsSubpage ) {
 763                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgAllowDiffPreview, $wgEnableDiffPreviewPreference;
 764                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
 765                         "<p class='previewnote'>" . htmlspecialchars( wfMsg( 'previewnote' ) ) . "</p>\n";
 766                 if ( $isConflict ) {
 767                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) .
 768                                 "</h2>\n";
 769                 }
 770
 771                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 772                 $parserOptions->setEditSection( false );
 773
 774                 # don't parse user css/js, show message about preview
 775                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 776
 777                 if ( $isCssJsSubpage ) {
 778                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
 779                                 $previewtext = wfMsg('usercsspreview');
 780                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
 781                                 $previewtext = wfMsg('userjspreview');
 782                         }
 783                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
 784                         $wgOut->addHTML( $parserOutput->mText );
 785                         return $previewhead;
 786                 } else {
 787                         # if user want to see preview when he edit an article
 788                         if( $wgUser->getOption('previewonfirst') and ($this->textbox1 == '')) {
 789                                 $this->textbox1 = $this->mArticle->getContent(true);
 790                         }
 791
 792                         $toparse = $this->textbox1;
 793
 794                         # If we're adding a comment, we need to show the
 795                         # summary as the headline
 796                         if($this->section=="new" && $this->summary!="") {
 797                                 $toparse="== {$this->summary} ==\n\n".$toparse;
 798                         }
 799
 800                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
 801
 802                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
 803                                         $wgTitle, $parserOptions );
 804
 805                         $previewHTML = $parserOutput->mText;
 806
 807                         $wgOut->addCategoryLinks($parserOutput->getCategoryLinks());
 808                         $wgOut->addLanguageLinks($parserOutput->getLanguageLinks());
 809                         return $previewhead . $previewHTML;
 810                 }
 811         }
 812
 813         /**
 814          * @todo document
 815          */
 816         function blockedIPpage() {
 817                 global $wgOut, $wgUser, $wgContLang, $wgIP;
 818
 819                 $wgOut->setPageTitle( wfMsg( 'blockedtitle' ) );
 820                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 821                 $wgOut->setArticleRelated( false );
 822
 823                 $id = $wgUser->blockedBy();
 824                 $reason = $wgUser->blockedFor();
 825                 $ip = $wgIP;
 826
 827                 if ( is_numeric( $id ) ) {
 828                         $name = User::whoIs( $id );
 829                 } else {
 830                         $name = $id;
 831                 }
 832                 $link = '[[' . $wgContLang->getNsText( NS_USER ) .
 833                   ":{$name}|{$name}]]";
 834
 835                 $wgOut->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name ) );
 836                 $wgOut->returnToMain( false );
 837         }
 838
 839         /**
 840          * @todo document
 841          */
 842         function userNotLoggedInPage() {
 843                 global $wgOut;
 844
 845                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
 846                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 847                 $wgOut->setArticleRelated( false );
 848
 849                 $wgOut->addWikiText( wfMsg( 'whitelistedittext' ) );
 850                 $wgOut->returnToMain( false );
 851         }
 852
 853         /**
 854          * @todo document
 855          */
 856         function spamPage ( $match = false )
 857         {
 858                 global $wgOut;
 859                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
 860                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 861                 $wgOut->setArticleRelated( false );
 862
 863                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
 864                 if ( $match ) {
 865                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
 866                 }
 867                 $wgOut->returnToMain( false );
 868         }
 869
 870         /**
 871          * Forks processes to scan the originating IP for an open proxy server
 872          * MemCached can be used to skip IPs that have already been scanned
 873          */
 874         function proxyCheck() {
 875                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 876                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 877
 878                 if ( !$wgBlockOpenProxies ) {
 879                         return;
 880                 }
 881
 882                 # Get MemCached key
 883                 $skip = false;
 884                 if ( $wgUseMemCached ) {
 885                         $mcKey = $wgDBname.':proxy:ip:'.$wgIP;
 886                         $mcValue = $wgMemc->get( $mcKey );
 887                         if ( $mcValue ) {
 888                                 $skip = true;
 889                         }
 890                 }
 891
 892                 # Fork the processes
 893                 if ( !$skip ) {
 894                         $title = Title::makeTitle( NS_SPECIAL, 'Blockme' );
 895                         $iphash = md5( $wgIP . $wgProxyKey );
 896                         $url = $title->getFullURL( 'ip='.$iphash );
 897
 898                         foreach ( $wgProxyPorts as $port ) {
 899                                 $params = implode( ' ', array(
 900                                                         escapeshellarg( $wgProxyScriptPath ),
 901                                                         escapeshellarg( $wgIP ),
 902                                                         escapeshellarg( $port ),
 903                                                         escapeshellarg( $url )
 904                                                         ));
 905                                 exec( "php $params &>/dev/null &" );
 906                         }
 907                         # Set MemCached key
 908                         if ( $wgUseMemCached ) {
 909                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 910                         }
 911                 }
 912         }
 913
 914         /**
 915          * @access private
 916          * @todo document
 917          */
 918         function mergeChangesInto( &$editText ){
 919                 $db =& wfGetDB( DB_MASTER );
 920
 921                 // This is the revision the editor started from
 922                 $baseRevision = Revision::loadFromTimestamp(
 923                         $db, $this->mArticle->mTitle, $this->edittime );
 924                 if( is_null( $baseRevision ) ) {
 925                         return false;
 926                 }
 927                 $baseText = $baseRevision->getText();
 928
 929                 // The current state, we want to merge updates into it
 930                 $currentRevision =  Revision::loadFromTitle(
 931                         $db, $this->mArticle->mTitle );
 932                 if( is_null( $currentRevision ) ) {
 933                         return false;
 934                 }
 935                 $currentText = $currentRevision->getText();
 936
 937                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
 938                         $editText = $result;
 939                         return true;
 940                 } else {
 941                         return false;
 942                 }
 943         }
 944
 945
 946         function checkUnicodeCompliantBrowser() {
 947                 global $wgBrowserBlackList;
 948                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
 949                 foreach ( $wgBrowserBlackList as $browser ) {
 950                         if ( preg_match($browser, $currentbrowser) ) {
 951                                 return false;
 952                         }
 953                 }
 954                 return true;
 955         }
 956
 957         /**
 958          * Format an anchor fragment as it would appear for a given section name
 959          * @param string $text
 960          * @return string
 961          * @access private
 962          */
 963         function sectionAnchor( $text ) {
 964                 $headline = Sanitizer::decodeCharReferences( $text );
 965                 # strip out HTML
 966                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
 967                 $headline = trim( $headline );
 968                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
 969                 $replacearray = array(
 970                         '%3A' => ':',
 971                         '%' => '.'
 972                 );
 973                 return str_replace(
 974                         array_keys( $replacearray ),
 975                         array_values( $replacearray ),
 976                         $sectionanchor );
 977         }
 978
 979         /**
 980          * Shows a bulletin board style toolbar for common editing functions.
 981          * It can be disabled in the user preferences.
 982          * The necessary JavaScript code can be found in style/wikibits.js.
 983          */
 984         function getEditToolbar() {
 985                 global $wgStylePath, $wgLang, $wgMimeType, $wgJsMimeType;
 986
 987                 /**
 988                  * toolarray an array of arrays which each include the filename of
 989                  * the button image (without path), the opening tag, the closing tag,
 990                  * and optionally a sample text that is inserted between the two when no
 991                  * selection is highlighted.
 992                  * The tip text is shown when the user moves the mouse over the button.
 993                  *
 994                  * Already here are accesskeys (key), which are not used yet until someone
 995                  * can figure out a way to make them work in IE. However, we should make
 996                  * sure these keys are not defined on the edit page.
 997                  */
 998                 $toolarray=array(
 999                         array(  'image'=>'button_bold.png',
1000                                         'open'  =>      "\'\'\'",
1001                                         'close' =>      "\'\'\'",
1002                                         'sample'=>      wfMsg('bold_sample'),
1003                                         'tip'   =>      wfMsg('bold_tip'),
1004                                         'key'   =>      'B'
1005                                 ),
1006                         array(  'image'=>'button_italic.png',
1007                                         'open'  =>      "\'\'",
1008                                         'close' =>      "\'\'",
1009                                         'sample'=>      wfMsg('italic_sample'),
1010                                         'tip'   =>      wfMsg('italic_tip'),
1011                                         'key'   =>      'I'
1012                                 ),
1013                         array(  'image'=>'button_link.png',
1014                                         'open'  =>      '[[',
1015                                         'close' =>      ']]',
1016                                         'sample'=>      wfMsg('link_sample'),
1017                                         'tip'   =>      wfMsg('link_tip'),
1018                                         'key'   =>      'L'
1019                                 ),
1020                         array(  'image'=>'button_extlink.png',
1021                                         'open'  =>      '[',
1022                                         'close' =>      ']',
1023                                         'sample'=>      wfMsg('extlink_sample'),
1024                                         'tip'   =>      wfMsg('extlink_tip'),
1025                                         'key'   =>      'X'
1026                                 ),
1027                         array(  'image'=>'button_headline.png',
1028                                         'open'  =>      "\\n== ",
1029                                         'close' =>      " ==\\n",
1030                                         'sample'=>      wfMsg('headline_sample'),
1031                                         'tip'   =>      wfMsg('headline_tip'),
1032                                         'key'   =>      'H'
1033                                 ),
1034                         array(  'image'=>'button_image.png',
1035                                         'open'  =>      '[['.$wgLang->getNsText(NS_IMAGE).":",
1036                                         'close' =>      ']]',
1037                                         'sample'=>      wfMsg('image_sample'),
1038                                         'tip'   =>      wfMsg('image_tip'),
1039                                         'key'   =>      'D'
1040                                 ),
1041                         array(  'image' =>'button_media.png',
1042                                         'open'  =>      '[['.$wgLang->getNsText(NS_MEDIA).':',
1043                                         'close' =>      ']]',
1044                                         'sample'=>      wfMsg('media_sample'),
1045                                         'tip'   =>      wfMsg('media_tip'),
1046                                         'key'   =>      'M'
1047                                 ),
1048                         array(  'image' =>'button_math.png',
1049                                         'open'  =>      "\\<math\\>",
1050                                         'close' =>      "\\</math\\>",
1051                                         'sample'=>      wfMsg('math_sample'),
1052                                         'tip'   =>      wfMsg('math_tip'),
1053                                         'key'   =>      'C'
1054                                 ),
1055                         array(  'image' =>'button_nowiki.png',
1056                                         'open'  =>      "\\<nowiki\\>",
1057                                         'close' =>      "\\</nowiki\\>",
1058                                         'sample'=>      wfMsg('nowiki_sample'),
1059                                         'tip'   =>      wfMsg('nowiki_tip'),
1060                                         'key'   =>      'N'
1061                                 ),
1062                         array(  'image' =>'button_sig.png',
1063                                         'open'  =>      '--~~~~',
1064                                         'close' =>      '',
1065                                         'sample'=>      '',
1066                                         'tip'   =>      wfMsg('sig_tip'),
1067                                         'key'   =>      'Y'
1068                                 ),
1069                         array(  'image' =>'button_hr.png',
1070                                         'open'  =>      "\\n----\\n",
1071                                         'close' =>      '',
1072                                         'sample'=>      '',
1073                                         'tip'   =>      wfMsg('hr_tip'),
1074                                         'key'   =>      'R'
1075                                 )
1076                 );
1077                 $toolbar ="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1078
1079                 $toolbar.="document.writeln(\"<div id='toolbar'>\");\n";
1080                 foreach($toolarray as $tool) {
1081
1082                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1083                         $open=$tool['open'];
1084                         $close=$tool['close'];
1085                         $sample = wfEscapeJsString( $tool['sample'] );
1086
1087                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1088                         // Older browsers show a "speedtip" type message only for ALT.
1089                         // Ideally these should be different, realistically they
1090                         // probably don't need to be.
1091                         $tip = wfEscapeJsString( $tool['tip'] );
1092
1093                         #$key = $tool["key"];
1094
1095                         $toolbar.="addButton('$image','$tip','$open','$close','$sample');\n";
1096                 }
1097
1098                 $toolbar.="addInfobox('" . wfEscapeJsString( wfMsg( "infobox" ) ) .
1099                         "','" . wfEscapeJsString( wfMsg( "infobox_alert" ) ) . "');\n";
1100                 $toolbar.="document.writeln(\"</div>\");\n";
1101
1102                 $toolbar.="/*]]>*/\n</script>";
1103                 return $toolbar;
1104         }
1105
1106         /**
1107          * Output preview text only. This can be sucked into the edit page
1108          * via JavaScript, and saves the server time rendering the skin as
1109          * well as theoretically being more robust on the client (doesn't
1110          * disturb the edit box's undo history, won't eat your text on
1111          * failure, etc).
1112          *
1113          * @todo This doesn't include category or interlanguage links.
1114          *       Would need to enhance it a bit, maybe wrap them in XML
1115          *       or something... that might also require more skin
1116          *       initialization, so check whether that's a problem.
1117          */
1118         function livePreview() {
1119                 global $wgOut;
1120                 $wgOut->disable();
1121                 header( 'Content-type: text/xml' );
1122                 header( 'Cache-control: no-cache' );
1123                 # FIXME
1124                 echo $this->getPreviewText( false, false );
1125         }
1126
1127
1128         /**
1129          * Get a diff between the current contents of the edit box and the
1130          * version of the page we're editing from.
1131          *
1132          * If this is a section edit, we'll replace the section as for final
1133          * save and then make a comparison.
1134          *
1135          * @return string HTML
1136          */
1137         function getDiff() {
1138                 require_once( 'DifferenceEngine.php' );
1139                 $oldtext = $this->mArticle->fetchContent();
1140                 $newtext = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
1141                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1142                 $oldtitle = wfMsg( 'currentrev' );
1143                 $newtitle = wfMsg( 'yourtext' );
1144                 if ( $oldtext != wfMsg( 'noarticletext' ) || $newtext != '' ) {
1145                         $difftext = DifferenceEngine::getDiff( $oldtext, $newtext, $oldtitle, $newtitle );
1146                 }
1147
1148                 return '<div id="wikiDiff">' . $difftext . '</div>';
1149         }
1150
1151 }
1152
1153 ?>