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, $recreate = false;
  24         var $textbox1 = '', $textbox2 = '', $summary = '';
  25         var $edittime = '', $section = '', $starttime = '';
  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 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 215                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 216                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 217                         $this->summary   =        $request->getText( 'wpSummary'  );
 218
 219                         $this->edittime = $request->getVal( 'wpEdittime' );
 220                         $this->starttime = $request->getVal( 'wpStarttime' );
 221                         if( is_null( $this->edittime ) ) {
 222                                 # If the form is incomplete, force to preview.
 223                                 $this->preview  = true;
 224                         } else {
 225                                 if( $this->tokenOk( $request ) ) {
 226                                         # Some browsers will not report any submit button
 227                                         # if the user hits enter in the comment box.
 228                                         # The unmarked state will be assumed to be a save,
 229                                         # if the form seems otherwise complete.
 230                                         $this->preview = $request->getCheck( 'wpPreview' );
 231                                         $this->diff = $request->getCheck( 'wpDiff' );
 232                                 } else {
 233                                         # Page might be a hack attempt posted from
 234                                         # an external site. Preview instead of saving.
 235                                         $this->preview = true;
 236                                 }
 237                         }
 238                         $this->save    = ! ( $this->preview OR $this->diff );
 239                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 240                                 $this->edittime = null;
 241                         }
 242
 243                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 244                                 $this->starttime = null;
 245                         }
 246
 247                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 248
 249                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 250                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 251                 } else {
 252                         # Not a posted form? Start with nothing.
 253                         $this->textbox1  = '';
 254                         $this->textbox2  = '';
 255                         $this->mMetaData = '';
 256                         $this->summary   = '';
 257                         $this->edittime  = '';
 258                         $this->starttime = wfTimestampNow();
 259                         $this->preview   = false;
 260                         $this->save      = false;
 261                         $this->diff      = false;
 262                         $this->minoredit = false;
 263                         $this->watchthis = false;
 264                         $this->recreate  = false;
 265                 }
 266
 267                 $this->oldid = $request->getInt( 'oldid' );
 268
 269                 # Section edit can come from either the form or a link
 270                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 271
 272                 $this->live = $request->getCheck( 'live' );
 273         }
 274
 275         /**
 276          * Make sure the form isn't faking a user's credentials.
 277          *
 278          * @param WebRequest $request
 279          * @return bool
 280          * @access private
 281          */
 282         function tokenOk( &$request ) {
 283                 global $wgUser;
 284                 if( $wgUser->isAnon() ) {
 285                         # Anonymous users may not have a session
 286                         # open. Don't tokenize.
 287                         return true;
 288                 } else {
 289                         return $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 290                 }
 291         }
 292
 293         function submit() {
 294                 $this->edit();
 295         }
 296
 297         /**
 298          * The edit form is self-submitting, so that when things like
 299          * preview and edit conflicts occur, we get the same form back
 300          * with the extra stuff added.  Only when the final submission
 301          * is made and all is well do we actually save and redirect to
 302          * the newly-edited page.
 303          *
 304          * @param string $formtype Type of form either : save, initial, diff or preview
 305          * @param bool $firsttime True to load form data from db
 306          */
 307         function editForm( $formtype, $firsttime = false ) {
 308                 global $wgOut, $wgUser;
 309                 global $wgLang, $wgContLang, $wgParser, $wgTitle;
 310                 global $wgAllowAnonymousMinor, $wgRequest;
 311                 global $wgSpamRegex, $wgFilterCallback;
 312
 313                 $sk = $wgUser->getSkin();
 314                 $isConflict = false;
 315                 // css / js subpages of user pages get a special treatment
 316                 $isCssJsSubpage = $wgTitle->isCssJsSubpage();
 317
 318
 319                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 320                  * no matter it's current state
 321                  */
 322                 $deletetime = 0;
 323                 $confirmdelete = false;
 324                 if ( $this->edittime != '' ) {
 325                         /* Note that we rely on logging table, which hasn't been always there,
 326                          * but that doesn't matter, because this only applies to brand new
 327                          * deletes. This is done on every preview and save request. Move it further down
 328                          * to only perform it on saves
 329                          */
 330                         if ( $this->mTitle->isDeleted() ) {
 331                                 $query = $this->getLastDelete();
 332                                 if ( !is_null($query) ) {
 333                                         $deletetime = $query->log_timestamp;
 334                                         if ( ($deletetime - $this->starttime) > 0 ) {
 335                                                 $confirmdelete = true;
 336                                         }
 337                                 }
 338                         }
 339                 }
 340
 341
 342
 343                 if(!$this->mTitle->getArticleID() && ('initial' == $formtype || $firsttime )) { # new article
 344                         $editintro = $wgRequest->getText( 'editintro' );
 345                         $addstandardintro=true;
 346                         if($editintro) {
 347                                 $introtitle=Title::newFromText($editintro);
 348                                 if(isset($introtitle) && $introtitle->userCanRead()) {
 349                                         $rev=Revision::newFromTitle($introtitle);
 350                                         if($rev) {
 351                                                 $wgOut->addWikiText($rev->getText());
 352                                                 $addstandardintro=false;
 353                                         }
 354                                 }
 355                         }
 356                         if($addstandardintro) {
 357                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 358                         }
 359                 }
 360
 361                 if( $this->mTitle->isTalkPage() ) {
 362                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 363                 }
 364
 365                 # Attempt submission here.  This will check for edit conflicts,
 366                 # and redundantly check for locked database, blocked IPs, etc.
 367                 # that edit() already checked just in case someone tries to sneak
 368                 # in the back door with a hand-edited submission URL.
 369
 370                 if ( 'save' == $formtype ) {
 371                         # Reintegrate metadata
 372                         if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 373                         $this->mMetaData = '' ;
 374
 375                         # Check for spam
 376                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 377                                 $this->spamPage ( $matches[0] );
 378                                 return;
 379                         }
 380                         if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 381                                 # Error messages or other handling should be performed by the filter function
 382                                 return;
 383                         }
 384                         if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 385                                 # Check block state against master, thus 'false'.
 386                                 $this->blockedIPpage();
 387                                 return;
 388                         }
 389
 390                         if ( !$wgUser->isAllowed('edit') ) {
 391                                 if ( $wgUser->isAnon() ) {
 392                                 $this->userNotLoggedInPage();
 393                                 return;
 394                         }
 395                                 else {
 396                                         $wgOut->readOnlyPage();
 397                                         return;
 398                                 }
 399                         }
 400
 401                         if ( wfReadOnly() ) {
 402                                 $wgOut->readOnlyPage();
 403                                 return;
 404                         }
 405                         if ( $wgUser->pingLimiter() ) {
 406                                 $wgOut->rateLimited();
 407                                 return;
 408                         }
 409
 410                         # If the article has been deleted while editing, don't save it without
 411                         # confirmation
 412                         if ( !$confirmdelete || $this->recreate ) {
 413
 414
 415                         # If article is new, insert it.
 416                         $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 417                         if ( 0 == $aid ) {
 418                                 # Don't save a new article if it's blank.
 419                                 if ( ( '' == $this->textbox1 ) ||
 420                                   ( wfMsg( 'newarticletext' ) == $this->textbox1 ) ) {
 421                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 422                                         return;
 423                                 }
 424                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$this->textbox1,
 425                                                            &$this->summary, &$this->minoredit, &$this->watchthis, NULL)))
 426                                 {
 427
 428                                         $isComment=($this->section=='new');
 429                                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 430                                                                                                            $this->minoredit, $this->watchthis, false, $isComment);
 431                                         wfRunHooks('ArticleSaveComplete', array(&$this->mArticle, &$wgUser, $this->textbox1,
 432                                                                                                                         $this->summary, $this->minoredit,
 433                                                                                                                         $this->watchthis, NULL));
 434                                 }
 435                                 return;
 436                         }
 437
 438                         # Article exists. Check for edit conflict.
 439
 440                         $this->mArticle->clear(); # Force reload of dates, etc.
 441                         $this->mArticle->forUpdate( true ); # Lock the article
 442
 443 wfdebug("CONFLICT: edittime=".$this->edittime." article timestamp=".$this->mArticle->getTimestamp()."\n");
 444                         if( ( $this->section != 'new' ) &&
 445                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 446                                 $isConflict = true;
 447                         }
 448                         $userid = $wgUser->getID();
 449
 450                         if ( $isConflict) {
 451                                 wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 452                                         $this->mArticle->getTimestamp() . "'\n" );
 453                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 454                                         $this->section, $this->textbox1, $this->summary, $this->edittime);
 455                         }
 456                         else {
 457                                 wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 458                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 459                                         $this->section, $this->textbox1, $this->summary);
 460                         }
 461                         # Suppress edit conflict with self
 462
 463                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 464                                 wfDebug( "Suppressing edit conflict, same user.\n" );
 465                                 $isConflict = false;
 466                         } else {
 467                                 # switch from section editing to normal editing in edit conflict
 468                                 if($isConflict) {
 469                                         # Attempt merge
 470                                         if( $this->mergeChangesInto( $text ) ){
 471                                                 // Successful merge! Maybe we should tell the user the good news?
 472                                                 $isConflict = false;
 473                                                 wfDebug( "Suppressing edit conflict, successful merge.\n" );
 474                                         } else {
 475                                                 $this->section = '';
 476                                                 $this->textbox1 = $text;
 477                                                 wfDebug( "Keeping edit conflict, failed merge.\n" );
 478                                         }
 479                                 }
 480                         }
 481                         if ( ! $isConflict ) {
 482                                 # All's well
 483                                 $sectionanchor = '';
 484                                 if( $this->section == 'new' ) {
 485                                         if( $this->summary != '' ) {
 486                                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 487                                         }
 488                                 } elseif( $this->section != '' ) {
 489                                         # Try to get a section anchor from the section source, redirect to edited section if header found
 490                                         # XXX: might be better to integrate this into Article::getTextOfLastEditWithSectionReplacedOrAdded
 491                                         # for duplicate heading checking and maybe parsing
 492                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 493                                         # we can't deal with anchors, includes, html etc in the header for now,
 494                                         # headline would need to be parsed to improve this
 495                                         #if($hasmatch and strlen($matches[2]) > 0 and !preg_match( "/[\\['{<>]/", $matches[2])) {
 496                                         if($hasmatch and strlen($matches[2]) > 0) {
 497                                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 498                                         }
 499                                 }
 500
 501                                 // Save errors may fall down to the edit form, but we've now
 502                                 // merged the section into full text. Clear the section field
 503                                 // so that later submission of conflict forms won't try to
 504                                 // replace that into a duplicated mess.
 505                                 $this->textbox1 = $text;
 506                                 $this->section = '';
 507
 508                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$text,
 509                                                                 &$this->summary, &$this->minoredit,
 510                                                                 &$this->watchthis, &$sectionanchor)))
 511                                 {
 512                                         # update the article here
 513                                         if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 514                                                                            $this->watchthis, '', $sectionanchor ))
 515                                         {
 516                                                 wfRunHooks('ArticleSaveComplete',
 517                                                         array(&$this->mArticle, &$wgUser, $text,
 518                                                                 $this->summary, $this->minoredit,
 519                                                                 $this->watchthis, $sectionanchor));
 520                                                 return;
 521                                         } else {
 522                                                 $isConflict = true;
 523                                         }
 524                                 }
 525                         }
 526                 }
 527                 }
 528                 # First time through: get contents, set time for conflict
 529                 # checking, etc.
 530
 531                 if ( 'initial' == $formtype || $firsttime ) {
 532                         $this->edittime = $this->mArticle->getTimestamp();
 533                         $this->textbox1 = $this->mArticle->getContent( true );
 534                         $this->summary = '';
 535                         $this->proxyCheck();
 536                 }
 537                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 538
 539                 # Enabled article-related sidebar, toplinks, etc.
 540                 $wgOut->setArticleRelated( true );
 541
 542                 if ( $isConflict ) {
 543                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 544                         $wgOut->setPageTitle( $s );
 545                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 546
 547                         $this->textbox2 = $this->textbox1;
 548                         $this->textbox1 = $this->mArticle->getContent( true );
 549                         $this->edittime = $this->mArticle->getTimestamp();
 550                 } else {
 551
 552                         if( $this->section != '' ) {
 553                                 if( $this->section == 'new' ) {
 554                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 555                                 } else {
 556                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 557                                         if( !$this->preview && !$this->diff ) {
 558                                                 preg_match( "/^(=+)(.+)\\1/mi",
 559                                                         $this->textbox1,
 560                                                         $matches );
 561                                                 if( !empty( $matches[2] ) ) {
 562                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 563                                                 }
 564                                         }
 565                                 }
 566                         } else {
 567                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 568                         }
 569                         $wgOut->setPageTitle( $s );
 570                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 571                                 $this->mArticle->setOldSubtitle();
 572                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 573                         }
 574                         if ( isset( $this->mArticle )
 575                              && isset( $this->mArticle->mRevision )
 576                              && !$this->mArticle->mRevision->isCurrent() ) {
 577                                 $this->mArticle->setOldSubtitle();
 578                                 $wgOut->addWikiText( wfMsg( 'editingold' ) );
 579                         }
 580                 }
 581
 582                 if( wfReadOnly() ) {
 583                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 584                 } else if ( $isCssJsSubpage and 'preview' != $formtype) {
 585                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ));
 586                 }
 587                 if( $this->mTitle->isProtected('edit') ) {
 588                         $wgOut->addWikiText( wfMsg( 'protectedpagewarning' ) );
 589                 }
 590
 591                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 592                 if( $kblength > 29 ) {
 593                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $kblength ) ) );
 594                 }
 595
 596                 $rows = $wgUser->getOption( 'rows' );
 597                 $cols = $wgUser->getOption( 'cols' );
 598
 599                 $ew = $wgUser->getOption( 'editwidth' );
 600                 if ( $ew ) $ew = " style=\"width:100%\"";
 601                 else $ew = '';
 602
 603                 $q = 'action=submit';
 604                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 605                 $action = $this->mTitle->escapeLocalURL( $q );
 606
 607                 $summary = wfMsg('summary');
 608                 $subject = wfMsg('subject');
 609                 $minor   = wfMsg('minoredit');
 610                 $watchthis = wfMsg ('watchthis');
 611                 $save = wfMsg('savearticle');
 612                 $prev = wfMsg('showpreview');
 613                 $diff = wfMsg('showdiff');
 614
 615                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 616                                 wfMsg('cancel') );
 617                 $edithelpurl = $sk->makeInternalOrExternalUrl( wfMsg( 'edithelppage' ));
 618                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 619                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 620                         htmlspecialchars( wfMsg( 'newwindow' ) );
 621
 622                 global $wgRightsText;
 623                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 624                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
 625                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
 626                                 $wgRightsText ) . "\n</div>";
 627
 628                 if( $wgUser->getOption('showtoolbar') and !$isCssJsSubpage ) {
 629                         # prepare toolbar for edit buttons
 630                         $toolbar = $this->getEditToolbar();
 631                 } else {
 632                         $toolbar = '';
 633                 }
 634
 635                 // activate checkboxes if user wants them to be always active
 636                 if( !$this->preview && !$this->diff ) {
 637                         if( $wgUser->getOption( 'watchdefault' ) ) $this->watchthis = true;
 638                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
 639
 640                         // activate checkbox also if user is already watching the page,
 641                         // require wpWatchthis to be unset so that second condition is not
 642                         // checked unnecessarily
 643                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 644                 }
 645
 646                 $minoredithtml = '';
 647
 648                 if ( $wgUser->isLoggedIn() || $wgAllowAnonymousMinor ) {
 649                         $minoredithtml =
 650                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 651                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 652                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 653                 }
 654
 655                 $watchhtml = '';
 656
 657                 if ( $wgUser->isLoggedIn() ) {
 658                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".
 659                                 ($this->watchthis?" checked='checked'":"").
 660                                 " accesskey=\"".htmlspecialchars(wfMsg('accesskey-watch'))."\" id='wpWatchthis'  />".
 661                                 "<label for='wpWatchthis' title=\"" .
 662                                         htmlspecialchars(wfMsg('tooltip-watch'))."\">{$watchthis}</label>";
 663                 }
 664
 665                 $checkboxhtml = $minoredithtml . $watchhtml . '<br />';
 666
 667                 $wgOut->addHTML( '<div id="wikiPreview">' );
 668                 if ( 'preview' == $formtype) {
 669                         $previewOutput = $this->getPreviewText( $isConflict, $isCssJsSubpage );
 670                         if ( $wgUser->getOption('previewontop' ) ) {
 671                                 $wgOut->addHTML( $previewOutput );
 672                                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
 673                                         $this->mArticle->closeShowCategory();
 674                                 }
 675                                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
 676                         }
 677                 }
 678                 $wgOut->addHTML( '</div>' );
 679                 if ( 'diff' == $formtype ) {
 680                         if ( $wgUser->getOption('previewontop' ) ) {
 681                                 $wgOut->addHTML( $this->getDiff() );
 682                         }
 683                 }
 684
 685
 686                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 687                 # Otherwise, show a summary field at the bottom
 688                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
 689                         if( $this->section == 'new' ) {
 690                                 $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 691                                 $editsummary = '';
 692                         } else {
 693                                 $commentsubject = '';
 694                                 $editsummary="{$summary}: <input tabindex='2' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 695                         }
 696
 697                 if( !$this->preview && !$this->diff ) {
 698                 # Don't select the edit box on preview; this interferes with seeing what's going on.
 699                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
 700                 }
 701                 # Prepare a list of templates used by this page
 702                 $templates = '';
 703                 $articleTemplates = $this->mArticle->getUsedTemplates();
 704                 if ( count( $articleTemplates ) > 0 ) {
 705                         $templates = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
 706                         foreach ( $articleTemplates as $tpl ) {
 707                                 if ( $titleObj = Title::makeTitle( NS_TEMPLATE, $tpl ) ) {
 708                                         $templates .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
 709                                 }
 710                         }
 711                         $templates .= '</ul>';
 712                 }
 713
 714                 global $wgLivePreview, $wgStylePath;
 715                 /**
 716                  * Live Preview lets us fetch rendered preview page content and
 717                  * add it to the page without refreshing the whole page.
 718                  * Set up the button for it; if not supported by the browser
 719                  * it will fall through to the normal form submission method.
 720                  */
 721                 if( $wgLivePreview ) {
 722                         global $wgJsMimeType;
 723                         $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
 724                                 htmlspecialchars( $wgStylePath . '/common/preview.js' ) .
 725                                 '"></script>' . "\n" );
 726                         $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
 727                         $liveOnclick = 'onclick="return !livePreview('.
 728                                 'getElementById(\'wikiPreview\'),' .
 729                                 'editform.wpTextbox1.value,' .
 730                                 htmlspecialchars( '"' . $liveAction . '"' ) . ')"';
 731                 } else {
 732                         $liveOnclick = '';
 733                 }
 734
 735                 global $wgUseMetadataEdit ;
 736                 if ( $wgUseMetadataEdit ) {
 737                         $metadata = $this->mMetaData ;
 738                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
 739                         $helppage = Title::newFromText( wfMsg( "metadata_page" ) ) ;
 740                         $top = wfMsg( 'metadata', $helppage->getInternalURL() );
 741                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
 742                 }
 743                 else $metadata = "" ;
 744
 745                 $hidden = '';
 746                 $recreate = '';
 747                 if ($confirmdelete) {
 748                         if ( 'save' != $formtype ) {
 749                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
 750                         } else {
 751                                 // Hide the toolbar and edit area, use can click preview to get it back
 752                                 // Add an confirmation checkbox and explanation.
 753                                 $toolbar = '';
 754                                 $hidden = 'type="hidden" style="display:none;"';
 755                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $query->user_name , $query->log_comment ));
 756                                 $recreate .=
 757                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
 758                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
 759                         }
 760                 }
 761
 762                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
 763                         ? ""
 764                         : "<input type='hidden' name=\"safemode\" value='1' />\n";
 765
 766                 $wgOut->addHTML( <<<END
 767 {$toolbar}
 768 <form id="editform" name="editform" method="post" action="$action"
 769 enctype="multipart/form-data">
 770 $recreate
 771 {$commentsubject}
 772 <textarea tabindex='1' accesskey="," name="wpTextbox1" rows='{$rows}'
 773 cols='{$cols}'{$ew} $hidden>
 774 END
 775 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
 776 "
 777 </textarea>
 778 {$metadata}
 779 <br />{$editsummary}
 780 {$checkboxhtml}
 781 {$safemodehtml}
 782 <input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 783 " title=\"".wfMsg('tooltip-save')."\"/>
 784 <input tabindex='6' id='wpPreview' type='submit' $liveOnclick value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 785 " title=\"".wfMsg('tooltip-preview')."\"/>
 786 <input tabindex='7' id='wpDiff' type='submit' value=\"{$diff}\" name=\"wpDiff\" accesskey=\"".wfMsg('accesskey-diff')."\"".
 787 " title=\"".wfMsg('tooltip-diff')."\"/>
 788 <em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}" );
 789                 $wgOut->addWikiText( $copywarn );
 790                 $wgOut->addHTML( "
 791 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 792 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
 793 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 794
 795                 if ( $wgUser->isLoggedIn() ) {
 796                         /**
 797                          * To make it harder for someone to slip a user a page
 798                          * which submits an edit form to the wiki without their
 799                          * knowledge, a random token is associated with the login
 800                          * session. If it's not passed back with the submission,
 801                          * we won't save the page, or render user JavaScript and
 802                          * CSS previews.
 803                          */
 804                         $token = htmlspecialchars( $wgUser->editToken() );
 805                         $wgOut->addHTML( "
 806 <input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
 807                 }
 808
 809
 810                 if ( $isConflict ) {
 811                         require_once( "DifferenceEngine.php" );
 812                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
 813                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 814                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 815
 816                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
 817                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 818 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) .
 819 "
 820 </textarea>" );
 821                 }
 822                 $wgOut->addHTML( "</form>\n" );
 823                 if ( $formtype == 'preview' && !$wgUser->getOption( 'previewontop' ) ) {
 824                         $wgOut->addHTML( '<div id="wikiPreview">' . $previewOutput . '</div>' );
 825                 }
 826                 if ( $formtype == 'diff' && !$wgUser->getOption( 'previewontop' ) ) {
 827                         #$wgOut->addHTML( '<div id="wikiPreview">' . $difftext . '</div>' );
 828                         $wgOut->addHTML( $this->getDiff() );
 829                 }
 830         }
 831
 832         function getLastDelete() {
 833                 $dbr =& wfGetDB( DB_SLAVE );
 834                 $fname = 'EditPage::getLastDelete';
 835                 $res = $dbr->select(
 836                         array( 'logging', 'user' ),
 837                         array( 'log_type',
 838                                'log_action',
 839                                'log_timestamp',
 840                                'log_user',
 841                                'log_namespace',
 842                                'log_title',
 843                                'log_comment',
 844                                'log_params',
 845                                'user_name', ),
 846                         array( 'log_namespace="' . $this->mTitle->getNamespace() . '"',
 847                                'log_title="' . $this->mTitle->getDBkey() . '"',
 848                                'log_type="delete"',
 849                                'log_action="delete"',
 850                                'user_id=log_user' ),
 851                         $fname,
 852                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
 853
 854                 if($dbr->numRows($res) == 1) {
 855                         while ( $x = $dbr->fetchObject ( $res ) )
 856                                 $data = $x;
 857                         $dbr->freeResult ( $res ) ;
 858                 } else {
 859                         $data = null;
 860                 }
 861                 return $data;
 862         }
 863
 864         /**
 865          * @todo document
 866          */
 867         function getPreviewText( $isConflict, $isCssJsSubpage ) {
 868                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgAllowDiffPreview, $wgEnableDiffPreviewPreference;
 869                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
 870                         "<p class='previewnote'>" . htmlspecialchars( wfMsg( 'previewnote' ) ) . "</p>\n";
 871                 if ( $isConflict ) {
 872                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) .
 873                                 "</h2>\n";
 874                 }
 875
 876                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 877                 $parserOptions->setEditSection( false );
 878
 879                 # don't parse user css/js, show message about preview
 880                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 881
 882                 if ( $isCssJsSubpage ) {
 883                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
 884                                 $previewtext = wfMsg('usercsspreview');
 885                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
 886                                 $previewtext = wfMsg('userjspreview');
 887                         }
 888                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
 889                         $wgOut->addHTML( $parserOutput->mText );
 890                         return $previewhead;
 891                 } else {
 892                         # if user want to see preview when he edit an article
 893                         if( $wgUser->getOption('previewonfirst') and ($this->textbox1 == '')) {
 894                                 $this->textbox1 = $this->mArticle->getContent(true);
 895                         }
 896
 897                         $toparse = $this->textbox1;
 898
 899                         # If we're adding a comment, we need to show the
 900                         # summary as the headline
 901                         if($this->section=="new" && $this->summary!="") {
 902                                 $toparse="== {$this->summary} ==\n\n".$toparse;
 903                         }
 904
 905                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
 906
 907                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
 908                                         $wgTitle, $parserOptions );
 909
 910                         $previewHTML = $parserOutput->mText;
 911
 912                         $wgOut->addCategoryLinks($parserOutput->getCategoryLinks());
 913                         $wgOut->addLanguageLinks($parserOutput->getLanguageLinks());
 914                         return $previewhead . $previewHTML;
 915                 }
 916         }
 917
 918         /**
 919          * @todo document
 920          */
 921         function blockedIPpage() {
 922                 global $wgOut, $wgUser, $wgContLang, $wgIP;
 923
 924                 $wgOut->setPageTitle( wfMsg( 'blockedtitle' ) );
 925                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 926                 $wgOut->setArticleRelated( false );
 927
 928                 $id = $wgUser->blockedBy();
 929                 $reason = $wgUser->blockedFor();
 930                 $ip = $wgIP;
 931
 932                 if ( is_numeric( $id ) ) {
 933                         $name = User::whoIs( $id );
 934                 } else {
 935                         $name = $id;
 936                 }
 937                 $link = '[[' . $wgContLang->getNsText( NS_USER ) .
 938                   ":{$name}|{$name}]]";
 939
 940                 $wgOut->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name ) );
 941                 $wgOut->returnToMain( false );
 942         }
 943
 944         /**
 945          * @todo document
 946          */
 947         function userNotLoggedInPage() {
 948                 global $wgOut;
 949
 950                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
 951                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 952                 $wgOut->setArticleRelated( false );
 953
 954                 $wgOut->addWikiText( wfMsg( 'whitelistedittext' ) );
 955                 $wgOut->returnToMain( false );
 956         }
 957
 958         /**
 959          * @todo document
 960          */
 961         function spamPage ( $match = false )
 962         {
 963                 global $wgOut;
 964                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
 965                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 966                 $wgOut->setArticleRelated( false );
 967
 968                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
 969                 if ( $match ) {
 970                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
 971                 }
 972                 $wgOut->returnToMain( false );
 973         }
 974
 975         /**
 976          * Forks processes to scan the originating IP for an open proxy server
 977          * MemCached can be used to skip IPs that have already been scanned
 978          */
 979         function proxyCheck() {
 980                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 981                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 982
 983                 if ( !$wgBlockOpenProxies ) {
 984                         return;
 985                 }
 986
 987                 # Get MemCached key
 988                 $skip = false;
 989                 if ( $wgUseMemCached ) {
 990                         $mcKey = $wgDBname.':proxy:ip:'.$wgIP;
 991                         $mcValue = $wgMemc->get( $mcKey );
 992                         if ( $mcValue ) {
 993                                 $skip = true;
 994                         }
 995                 }
 996
 997                 # Fork the processes
 998                 if ( !$skip ) {
 999                         $title = Title::makeTitle( NS_SPECIAL, 'Blockme' );
1000                         $iphash = md5( $wgIP . $wgProxyKey );
1001                         $url = $title->getFullURL( 'ip='.$iphash );
1002
1003                         foreach ( $wgProxyPorts as $port ) {
1004                                 $params = implode( ' ', array(
1005                                                         escapeshellarg( $wgProxyScriptPath ),
1006                                                         escapeshellarg( $wgIP ),
1007                                                         escapeshellarg( $port ),
1008                                                         escapeshellarg( $url )
1009                                                         ));
1010                                 exec( "php $params &>/dev/null &" );
1011                         }
1012                         # Set MemCached key
1013                         if ( $wgUseMemCached ) {
1014                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
1015                         }
1016                 }
1017         }
1018
1019         /**
1020          * @access private
1021          * @todo document
1022          */
1023         function mergeChangesInto( &$editText ){
1024                 $fname = 'EditPage::mergeChangesInto';
1025                 wfProfileIn( $fname );
1026
1027                 $db =& wfGetDB( DB_MASTER );
1028
1029                 // This is the revision the editor started from
1030                 $baseRevision = Revision::loadFromTimestamp(
1031                         $db, $this->mArticle->mTitle, $this->edittime );
1032                 if( is_null( $baseRevision ) ) {
1033                         wfProfileOut( $fname );
1034                         return false;
1035                 }
1036                 $baseText = $baseRevision->getText();
1037
1038                 // The current state, we want to merge updates into it
1039                 $currentRevision =  Revision::loadFromTitle(
1040                         $db, $this->mArticle->mTitle );
1041                 if( is_null( $currentRevision ) ) {
1042                         wfProfileOut( $fname );
1043                         return false;
1044                 }
1045                 $currentText = $currentRevision->getText();
1046
1047                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1048                         $editText = $result;
1049                         wfProfileOut( $fname );
1050                         return true;
1051                 } else {
1052                         wfProfileOut( $fname );
1053                         return false;
1054                 }
1055         }
1056
1057
1058         function checkUnicodeCompliantBrowser() {
1059                 global $wgBrowserBlackList;
1060                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1061                 foreach ( $wgBrowserBlackList as $browser ) {
1062                         if ( preg_match($browser, $currentbrowser) ) {
1063                                 return false;
1064                         }
1065                 }
1066                 return true;
1067         }
1068
1069         /**
1070          * Format an anchor fragment as it would appear for a given section name
1071          * @param string $text
1072          * @return string
1073          * @access private
1074          */
1075         function sectionAnchor( $text ) {
1076                 $headline = Sanitizer::decodeCharReferences( $text );
1077                 # strip out HTML
1078                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
1079                 $headline = trim( $headline );
1080                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
1081                 $replacearray = array(
1082                         '%3A' => ':',
1083                         '%' => '.'
1084                 );
1085                 return str_replace(
1086                         array_keys( $replacearray ),
1087                         array_values( $replacearray ),
1088                         $sectionanchor );
1089         }
1090
1091         /**
1092          * Shows a bulletin board style toolbar for common editing functions.
1093          * It can be disabled in the user preferences.
1094          * The necessary JavaScript code can be found in style/wikibits.js.
1095          */
1096         function getEditToolbar() {
1097                 global $wgStylePath, $wgLang, $wgMimeType, $wgJsMimeType;
1098
1099                 /**
1100                  * toolarray an array of arrays which each include the filename of
1101                  * the button image (without path), the opening tag, the closing tag,
1102                  * and optionally a sample text that is inserted between the two when no
1103                  * selection is highlighted.
1104                  * The tip text is shown when the user moves the mouse over the button.
1105                  *
1106                  * Already here are accesskeys (key), which are not used yet until someone
1107                  * can figure out a way to make them work in IE. However, we should make
1108                  * sure these keys are not defined on the edit page.
1109                  */
1110                 $toolarray=array(
1111                         array(  'image'=>'button_bold.png',
1112                                         'open'  =>      "\'\'\'",
1113                                         'close' =>      "\'\'\'",
1114                                         'sample'=>      wfMsg('bold_sample'),
1115                                         'tip'   =>      wfMsg('bold_tip'),
1116                                         'key'   =>      'B'
1117                                 ),
1118                         array(  'image'=>'button_italic.png',
1119                                         'open'  =>      "\'\'",
1120                                         'close' =>      "\'\'",
1121                                         'sample'=>      wfMsg('italic_sample'),
1122                                         'tip'   =>      wfMsg('italic_tip'),
1123                                         'key'   =>      'I'
1124                                 ),
1125                         array(  'image'=>'button_link.png',
1126                                         'open'  =>      '[[',
1127                                         'close' =>      ']]',
1128                                         'sample'=>      wfMsg('link_sample'),
1129                                         'tip'   =>      wfMsg('link_tip'),
1130                                         'key'   =>      'L'
1131                                 ),
1132                         array(  'image'=>'button_extlink.png',
1133                                         'open'  =>      '[',
1134                                         'close' =>      ']',
1135                                         'sample'=>      wfMsg('extlink_sample'),
1136                                         'tip'   =>      wfMsg('extlink_tip'),
1137                                         'key'   =>      'X'
1138                                 ),
1139                         array(  'image'=>'button_headline.png',
1140                                         'open'  =>      "\\n== ",
1141                                         'close' =>      " ==\\n",
1142                                         'sample'=>      wfMsg('headline_sample'),
1143                                         'tip'   =>      wfMsg('headline_tip'),
1144                                         'key'   =>      'H'
1145                                 ),
1146                         array(  'image'=>'button_image.png',
1147                                         'open'  =>      '[['.$wgLang->getNsText(NS_IMAGE).":",
1148                                         'close' =>      ']]',
1149                                         'sample'=>      wfMsg('image_sample'),
1150                                         'tip'   =>      wfMsg('image_tip'),
1151                                         'key'   =>      'D'
1152                                 ),
1153                         array(  'image' =>'button_media.png',
1154                                         'open'  =>      '[['.$wgLang->getNsText(NS_MEDIA).':',
1155                                         'close' =>      ']]',
1156                                         'sample'=>      wfMsg('media_sample'),
1157                                         'tip'   =>      wfMsg('media_tip'),
1158                                         'key'   =>      'M'
1159                                 ),
1160                         array(  'image' =>'button_math.png',
1161                                         'open'  =>      "\\<math\\>",
1162                                         'close' =>      "\\</math\\>",
1163                                         'sample'=>      wfMsg('math_sample'),
1164                                         'tip'   =>      wfMsg('math_tip'),
1165                                         'key'   =>      'C'
1166                                 ),
1167                         array(  'image' =>'button_nowiki.png',
1168                                         'open'  =>      "\\<nowiki\\>",
1169                                         'close' =>      "\\</nowiki\\>",
1170                                         'sample'=>      wfMsg('nowiki_sample'),
1171                                         'tip'   =>      wfMsg('nowiki_tip'),
1172                                         'key'   =>      'N'
1173                                 ),
1174                         array(  'image' =>'button_sig.png',
1175                                         'open'  =>      '--~~~~',
1176                                         'close' =>      '',
1177                                         'sample'=>      '',
1178                                         'tip'   =>      wfMsg('sig_tip'),
1179                                         'key'   =>      'Y'
1180                                 ),
1181                         array(  'image' =>'button_hr.png',
1182                                         'open'  =>      "\\n----\\n",
1183                                         'close' =>      '',
1184                                         'sample'=>      '',
1185                                         'tip'   =>      wfMsg('hr_tip'),
1186                                         'key'   =>      'R'
1187                                 )
1188                 );
1189                 $toolbar ="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1190
1191                 $toolbar.="document.writeln(\"<div id='toolbar'>\");\n";
1192                 foreach($toolarray as $tool) {
1193
1194                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1195                         $open=$tool['open'];
1196                         $close=$tool['close'];
1197                         $sample = wfEscapeJsString( $tool['sample'] );
1198
1199                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1200                         // Older browsers show a "speedtip" type message only for ALT.
1201                         // Ideally these should be different, realistically they
1202                         // probably don't need to be.
1203                         $tip = wfEscapeJsString( $tool['tip'] );
1204
1205                         #$key = $tool["key"];
1206
1207                         $toolbar.="addButton('$image','$tip','$open','$close','$sample');\n";
1208                 }
1209
1210                 $toolbar.="addInfobox('" . wfEscapeJsString( wfMsg( "infobox" ) ) .
1211                         "','" . wfEscapeJsString( wfMsg( "infobox_alert" ) ) . "');\n";
1212                 $toolbar.="document.writeln(\"</div>\");\n";
1213
1214                 $toolbar.="/*]]>*/\n</script>";
1215                 return $toolbar;
1216         }
1217
1218         /**
1219          * Output preview text only. This can be sucked into the edit page
1220          * via JavaScript, and saves the server time rendering the skin as
1221          * well as theoretically being more robust on the client (doesn't
1222          * disturb the edit box's undo history, won't eat your text on
1223          * failure, etc).
1224          *
1225          * @todo This doesn't include category or interlanguage links.
1226          *       Would need to enhance it a bit, maybe wrap them in XML
1227          *       or something... that might also require more skin
1228          *       initialization, so check whether that's a problem.
1229          */
1230         function livePreview() {
1231                 global $wgOut;
1232                 $wgOut->disable();
1233                 header( 'Content-type: text/xml' );
1234                 header( 'Cache-control: no-cache' );
1235                 # FIXME
1236                 echo $this->getPreviewText( false, false );
1237         }
1238
1239
1240         /**
1241          * Get a diff between the current contents of the edit box and the
1242          * version of the page we're editing from.
1243          *
1244          * If this is a section edit, we'll replace the section as for final
1245          * save and then make a comparison.
1246          *
1247          * @return string HTML
1248          */
1249         function getDiff() {
1250                 require_once( 'DifferenceEngine.php' );
1251                 $oldtext = $this->mArticle->fetchContent();
1252                 $newtext = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
1253                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1254                 $oldtitle = wfMsg( 'currentrev' );
1255                 $newtitle = wfMsg( 'yourtext' );
1256                 if ( $oldtext != wfMsg( 'noarticletext' ) || $newtext != '' ) {
1257                         $difftext = DifferenceEngine::getDiff( $oldtext, $newtext, $oldtitle, $newtitle );
1258                 }
1259
1260                 return '<div id="wikiDiff">' . $difftext . '</div>';
1261         }
1262
1263         /**
1264          * Filter an input field through a Unicode de-armoring process if it
1265          * came from an old browser with known broken Unicode editing issues.
1266          *
1267          * @param WebRequest $request
1268          * @param string $field
1269          * @return string
1270          * @access private
1271          */
1272         function safeUnicodeInput( $request, $field ) {
1273                 $text = rtrim( $request->getText( $field ) );
1274                 return $request->getBool( 'safemode' )
1275                         ? $this->unmakesafe( $text )
1276                         : $text;
1277         }
1278
1279         /**
1280          * Filter an output field through a Unicode armoring process if it is
1281          * going to an old browser with known broken Unicode editing issues.
1282          *
1283          * @param string $text
1284          * @return string
1285          * @access private
1286          */
1287         function safeUnicodeOutput( $text ) {
1288                 global $wgContLang;
1289                 $codedText = $wgContLang->recodeForEdit( $text );
1290                 return $this->checkUnicodeCompliantBrowser()
1291                         ? $codedText
1292                         : $this->makesafe( $codedText );
1293         }
1294
1295         /**
1296          * A number of web browsers are known to corrupt non-ASCII characters
1297          * in a UTF-8 text editing environment. To protect against this,
1298          * detected browsers will be served an armored version of the text,
1299          * with non-ASCII chars converted to numeric HTML character references.
1300          *
1301          * Preexisting such character references will have a 0 added to them
1302          * to ensure that round-trips do not alter the original data.
1303          *
1304          * @param string $invalue
1305          * @return string
1306          * @access private
1307          */
1308         function makesafe( $invalue ) {
1309                 // Armor existing references for reversability.
1310                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1311
1312                 $bytesleft = 0;
1313                 $result = "";
1314                 $working = 0;
1315                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1316                         $bytevalue = ord( $invalue{$i} );
1317                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1318                                 $result .= chr( $bytevalue );
1319                                 $bytesleft = 0;
1320                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
1321                                 $working = $working << 6;
1322                                 $working += ($bytevalue & 0x3F);
1323                                 $bytesleft--;
1324                                 if( $bytesleft <= 0 ) {
1325                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
1326                                 }
1327                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
1328                                 $working = $bytevalue & 0x1F;
1329                                 $bytesleft = 1;
1330                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
1331                                 $working = $bytevalue & 0x0F;
1332                                 $bytesleft = 2;
1333                         } else { //1111 0xxx
1334                                 $working = $bytevalue & 0x07;
1335                                 $bytesleft = 3;
1336                         }
1337                 }
1338                 return $result;
1339         }
1340
1341         /**
1342          * Reverse the previously applied transliteration of non-ASCII characters
1343          * back to UTF-8. Used to protect data from corruption by broken web browsers
1344          * as listed in $wgBrowserBlackList.
1345          *
1346          * @param string $invalue
1347          * @return string
1348          * @access private
1349          */
1350         function unmakesafe( $invalue ) {
1351                 $result = "";
1352                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1353                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
1354                                 $i += 3;
1355                                 $hexstring = "";
1356                                 do {
1357                                         $hexstring .= $invalue{$i};
1358                                         $i++;
1359                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
1360
1361                                 // Do some sanity checks. These aren't needed for reversability,
1362                                 // but should help keep the breakage down if the editor
1363                                 // breaks one of the entities whilst editing.
1364                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
1365                                         $codepoint = hexdec($hexstring);
1366                                         $result .= codepointToUtf8( $codepoint );
1367                                 } else {
1368                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
1369                                 }
1370                         } else {
1371                                 $result .= substr( $invalue, $i, 1 );
1372                         }
1373                 }
1374                 // reverse the transform that we made for reversability reasons.
1375                 return strtr( $result, array( "&#x0" => "&#x" ) );
1376         }
1377
1378
1379 }
1380
1381 ?>