includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  */
   5
   6 /**
   7  * The edit page/HTML interface (split from Article)
   8  * The actual database and text munging is still in Article,
   9  * but it should get easier to call those from alternate
  10  * interfaces.
  11  */
  12 class EditPage {
  13         var $mArticle;
  14         var $mTitle;
  15         var $mMetaData = '';
  16         var $isConflict = false;
  17         var $isCssJsSubpage = false;
  18         var $deletedSinceEdit = false;
  19         var $formtype;
  20         var $firsttime;
  21         var $lastDelete;
  22         var $mTokenOk = false;
  23         var $mTokenOkExceptSuffix = false;
  24         var $mTriedSave = false;
  25         var $tooBig = false;
  26         var $kblength = false;
  27         var $missingComment = false;
  28         var $missingSummary = false;
  29         var $allowBlankSummary = false;
  30         var $autoSumm = '';
  31         var $hookError = '';
  32         var $mPreviewTemplates;
  33
  34         # Form values
  35         var $save = false, $preview = false, $diff = false;
  36         var $minoredit = false, $watchthis = false, $recreate = false;
  37         var $textbox1 = '', $textbox2 = '', $summary = '';
  38         var $edittime = '', $section = '', $starttime = '';
  39         var $oldid = 0, $editintro = '', $scrolltop = null;
  40
  41         # Placeholders for text injection by hooks (must be HTML)
  42         # extensions should take care to _append_ to the present value
  43         public $editFormPageTop; // Before even the preview
  44         public $editFormTextTop;
  45         public $editFormTextAfterWarn;
  46         public $editFormTextAfterTools;
  47         public $editFormTextBottom;
  48
  49         /**
  50          * @todo document
  51          * @param $article
  52          */
  53         function EditPage( $article ) {
  54                 $this->mArticle =& $article;
  55                 global $wgTitle;
  56                 $this->mTitle =& $wgTitle;
  57
  58                 # Placeholders for text injection by hooks (empty per default)
  59                 $this->editFormPageTop =
  60                 $this->editFormTextTop =
  61                 $this->editFormTextAfterWarn =
  62                 $this->editFormTextAfterTools =
  63                 $this->editFormTextBottom = "";
  64         }
  65
  66         /**
  67          * Fetch initial editing page content.
  68          */
  69         private function getContent( $def_text = '' ) {
  70                 global $wgOut, $wgRequest, $wgParser;
  71
  72                 # Get variables from query string :P
  73                 $section = $wgRequest->getVal( 'section' );
  74                 $preload = $wgRequest->getVal( 'preload' );
  75                 $undoafter = $wgRequest->getVal( 'undoafter' );
  76                 $undo = $wgRequest->getVal( 'undo' );
  77
  78                 wfProfileIn( __METHOD__ );
  79
  80                 $text = '';
  81                 if( !$this->mTitle->exists() ) {
  82                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
  83                                 # If this is a system message, get the default text.
  84                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
  85                         } else {
  86                                 # If requested, preload some text.
  87                                 $text = $this->getPreloadedText( $preload );
  88                         }
  89                         # We used to put MediaWiki:Newarticletext here if
  90                         # $text was empty at this point.
  91                         # This is now shown above the edit box instead.
  92                 } else {
  93                         // FIXME: may be better to use Revision class directly
  94                         // But don't mess with it just yet. Article knows how to
  95                         // fetch the page record from the high-priority server,
  96                         // which is needed to guarantee we don't pick up lagged
  97                         // information.
  98
  99                         $text = $this->mArticle->getContent();
 100
 101                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 102                                 # If they got undoafter and undo round the wrong way, switch them
 103                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 104                         }
 105
 106                         if ( $undo > 0 && $undo > $undoafter ) {
 107                                 # Undoing a specific edit overrides section editing; section-editing
 108                                 # doesn't work with undoing.
 109                                 if ( $undoafter ) {
 110                                         $undorev = Revision::newFromId($undo);
 111                                         $oldrev = Revision::newFromId($undoafter);
 112                                 } else {
 113                                         $undorev = Revision::newFromId($undo);
 114                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 115                                 }
 116
 117                                 #Sanity check, make sure it's the right page.
 118                                 # Otherwise, $text will be left as-is.
 119                                 if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
 120                                         $undorev_text = $undorev->getText();
 121                                         $oldrev_text = $oldrev->getText();
 122                                         $currev_text = $text;
 123
 124                                         #No use doing a merge if it's just a straight revert.
 125                                         if ( $currev_text != $undorev_text ) {
 126                                                 $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
 127                                         } else {
 128                                                 $text = $oldrev_text;
 129                                                 $result = true;
 130                                         }
 131                                 } else {
 132                                         // Failed basic sanity checks.
 133                                         // Older revisions may have been removed since the link
 134                                         // was created, or we may simply have got bogus input.
 135                                         $result = false;
 136                                 }
 137
 138                                 if( $result ) {
 139                                         # Inform the user of our success and set an automatic edit summary
 140                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 141                                         $firstrev = $oldrev->getNext();
 142                                         # If we just undid one rev, use an autosummary
 143                                         if ( $firstrev->mId == $undo ) {
 144                                                 $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 145                                         }
 146                                         $this->formtype = 'diff';
 147                                 } else {
 148                                         # Warn the user that something went wrong
 149                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 150                                 }
 151                         } else if( $section != '' ) {
 152                                 if( $section == 'new' ) {
 153                                         $text = $this->getPreloadedText( $preload );
 154                                 } else {
 155                                         $text = $wgParser->getSection( $text, $section, $def_text );
 156                                 }
 157                         }
 158                 }
 159
 160                 wfProfileOut( __METHOD__ );
 161                 return $text;
 162         }
 163
 164         /**
 165          * Get the contents of a page from its title and remove includeonly tags
 166          *
 167          * @param $preload String: the title of the page.
 168          * @return string The contents of the page.
 169          */
 170         private function getPreloadedText($preload) {
 171                 if ( $preload === '' )
 172                         return '';
 173                 else {
 174                         $preloadTitle = Title::newFromText( $preload );
 175                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 176                                 $rev=Revision::newFromTitle($preloadTitle);
 177                                 if ( is_object( $rev ) ) {
 178                                         $text = $rev->getText();
 179                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 180                                         // its own mini-parser! -ævar
 181                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 182                                         return $text;
 183                                 } else
 184                                         return '';
 185                         }
 186                 }
 187         }
 188
 189         /**
 190          * This is the function that extracts metadata from the article body on the first view.
 191          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 192          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 193          */
 194         function extractMetaDataFromArticle () {
 195                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 196                 $this->mMetaData = '' ;
 197                 if ( !$wgUseMetadataEdit ) return ;
 198                 if ( $wgMetadataWhitelist == '' ) return ;
 199                 $s = '' ;
 200                 $t = $this->getContent();
 201
 202                 # MISSING : <nowiki> filtering
 203
 204                 # Categories and language links
 205                 $t = explode ( "\n" , $t ) ;
 206                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 207                 $cat = $ll = array() ;
 208                 foreach ( $t AS $key => $x )
 209                 {
 210                         $y = trim ( strtolower ( $x ) ) ;
 211                         while ( substr ( $y , 0 , 2 ) == '[[' )
 212                         {
 213                                 $y = explode ( ']]' , trim ( $x ) ) ;
 214                                 $first = array_shift ( $y ) ;
 215                                 $first = explode ( ':' , $first ) ;
 216                                 $ns = array_shift ( $first ) ;
 217                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 218                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 219                                 {
 220                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 221                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 222                                         else $ll[] = $add ;
 223                                         $x = implode ( ']]' , $y ) ;
 224                                         $t[$key] = $x ;
 225                                         $y = trim ( strtolower ( $x ) ) ;
 226                                 }
 227                         }
 228                 }
 229                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 230                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 231                 $t = implode ( "\n" , $t ) ;
 232
 233                 # Load whitelist
 234                 $sat = array () ; # stand-alone-templates; must be lowercase
 235                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 236                 $wl_article = new Article ( $wl_title ) ;
 237                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 238                 foreach ( $wl AS $x )
 239                 {
 240                         $isentry = false ;
 241                         $x = trim ( $x ) ;
 242                         while ( substr ( $x , 0 , 1 ) == '*' )
 243                         {
 244                                 $isentry = true ;
 245                                 $x = trim ( substr ( $x , 1 ) ) ;
 246                         }
 247                         if ( $isentry )
 248                         {
 249                                 $sat[] = strtolower ( $x ) ;
 250                         }
 251
 252                 }
 253
 254                 # Templates, but only some
 255                 $t = explode ( '{{' , $t ) ;
 256                 $tl = array () ;
 257                 foreach ( $t AS $key => $x )
 258                 {
 259                         $y = explode ( '}}' , $x , 2 ) ;
 260                         if ( count ( $y ) == 2 )
 261                         {
 262                                 $z = $y[0] ;
 263                                 $z = explode ( '|' , $z ) ;
 264                                 $tn = array_shift ( $z ) ;
 265                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 266                                 {
 267                                         $tl[] = '{{' . $y[0] . '}}' ;
 268                                         $t[$key] = $y[1] ;
 269                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 270                                 }
 271                                 else $t[$key] = '{{' . $x ;
 272                         }
 273                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 274                         else $t[$key] = $x ;
 275                 }
 276                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 277                 $t = implode ( '' , $t ) ;
 278
 279                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 280                 $this->mArticle->mContent = $t ;
 281                 $this->mMetaData = $s ;
 282         }
 283
 284         function submit() {
 285                 $this->edit();
 286         }
 287
 288         /**
 289          * This is the function that gets called for "action=edit". It
 290          * sets up various member variables, then passes execution to
 291          * another function, usually showEditForm()
 292          *
 293          * The edit form is self-submitting, so that when things like
 294          * preview and edit conflicts occur, we get the same form back
 295          * with the extra stuff added.  Only when the final submission
 296          * is made and all is well do we actually save and redirect to
 297          * the newly-edited page.
 298          */
 299         function edit() {
 300                 global $wgOut, $wgUser, $wgRequest, $wgTitle;
 301
 302                 if ( ! wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 303                         return;
 304
 305                 $fname = 'EditPage::edit';
 306                 wfProfileIn( $fname );
 307                 wfDebug( "$fname: enter\n" );
 308
 309                 // this is not an article
 310                 $wgOut->setArticleFlag(false);
 311
 312                 $this->importFormData( $wgRequest );
 313                 $this->firsttime = false;
 314
 315                 if( $this->live ) {
 316                         $this->livePreview();
 317                         wfProfileOut( $fname );
 318                         return;
 319                 }
 320
 321                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser);
 322                 if( !$this->mTitle->exists() )
 323                         $permErrors += $this->mTitle->getUserPermissionsErrors( 'create', $wgUser);
 324
 325                 # Ignore some permissions errors.
 326                 $remove = array();
 327                 foreach( $permErrors as $error ) {
 328                         if ($this->preview || $this->diff &&
 329                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 330                         {
 331                                 // Don't worry about blocks when previewing/diffing
 332                                 $remove[] = $error;
 333                         }
 334
 335                         if ($error[0] == 'readonlytext')
 336                         {
 337                                 if ($this->edit) {
 338                                         $this->formtype = 'preview';
 339                                 } elseif ($this->save || $this->preview || $this->diff) {
 340                                         $remove[] = $error;
 341                                 }
 342                         }
 343                 }
 344                 # array_diff returns elements in $permErrors that are not in $remove.
 345                 $permErrors = array_diff( $permErrors, $remove );
 346
 347                 if ( !empty($permErrors) )
 348                 {
 349                         wfDebug( "$fname: User can't edit\n" );
 350                         $wgOut->readOnlyPage( $this->getContent(), true, $permErrors );
 351                         wfProfileOut( $fname );
 352                         return;
 353                 } else {
 354                         if ( $this->save ) {
 355                                 $this->formtype = 'save';
 356                         } else if ( $this->preview ) {
 357                                 $this->formtype = 'preview';
 358                         } else if ( $this->diff ) {
 359                                 $this->formtype = 'diff';
 360                         } else { # First time through
 361                                 $this->firsttime = true;
 362                                 if( $this->previewOnOpen() ) {
 363                                         $this->formtype = 'preview';
 364                                 } else {
 365                                         $this->extractMetaDataFromArticle () ;
 366                                         $this->formtype = 'initial';
 367                                 }
 368                         }
 369                 }
 370
 371                 wfProfileIn( "$fname-business-end" );
 372
 373                 $this->isConflict = false;
 374                 // css / js subpages of user pages get a special treatment
 375                 $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
 376                 $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
 377
 378                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 379                  * no matter it's current state
 380                  */
 381                 $this->deletedSinceEdit = false;
 382                 if ( $this->edittime != '' ) {
 383                         /* Note that we rely on logging table, which hasn't been always there,
 384                          * but that doesn't matter, because this only applies to brand new
 385                          * deletes. This is done on every preview and save request. Move it further down
 386                          * to only perform it on saves
 387                          */
 388                         if ( $this->mTitle->isDeleted() ) {
 389                                 $this->lastDelete = $this->getLastDelete();
 390                                 if ( !is_null($this->lastDelete) ) {
 391                                         $deletetime = $this->lastDelete->log_timestamp;
 392                                         if ( ($deletetime - $this->starttime) > 0 ) {
 393                                                 $this->deletedSinceEdit = true;
 394                                         }
 395                                 }
 396                         }
 397                 }
 398
 399                 # Show applicable editing introductions
 400                 if( $this->formtype == 'initial' || $this->firsttime )
 401                         $this->showIntro();
 402
 403                 if( $this->mTitle->isTalkPage() ) {
 404                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 405                 }
 406
 407                 # Attempt submission here.  This will check for edit conflicts,
 408                 # and redundantly check for locked database, blocked IPs, etc.
 409                 # that edit() already checked just in case someone tries to sneak
 410                 # in the back door with a hand-edited submission URL.
 411
 412                 if ( 'save' == $this->formtype ) {
 413                         if ( !$this->attemptSave() ) {
 414                                 wfProfileOut( "$fname-business-end" );
 415                                 wfProfileOut( $fname );
 416                                 return;
 417                         }
 418                 }
 419
 420                 # First time through: get contents, set time for conflict
 421                 # checking, etc.
 422                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 423                         if ($this->initialiseForm() === false) {
 424                                 $this->noSuchSectionPage();
 425                                 wfProfileOut( "$fname-business-end" );
 426                                 wfProfileOut( $fname );
 427                                 return;
 428                         }
 429                         if( !$this->mTitle->getArticleId() )
 430                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 431                 }
 432
 433                 $this->showEditForm();
 434                 wfProfileOut( "$fname-business-end" );
 435                 wfProfileOut( $fname );
 436         }
 437
 438         /**
 439          * Should we show a preview when the edit form is first shown?
 440          *
 441          * @return bool
 442          */
 443         private function previewOnOpen() {
 444                 global $wgRequest, $wgUser;
 445                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 446                         // Explicit override from request
 447                         return true;
 448                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 449                         // Explicit override from request
 450                         return false;
 451                 } elseif( $this->section == 'new' ) {
 452                         // Nothing *to* preview for new sections
 453                         return false;
 454                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 455                         // Standard preference behaviour
 456                         return true;
 457                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 458                         // Categories are special
 459                         return true;
 460                 } else {
 461                         return false;
 462                 }
 463         }
 464
 465         /**
 466          * @todo document
 467          * @param $request
 468          */
 469         function importFormData( &$request ) {
 470                 global $wgLang, $wgUser;
 471                 $fname = 'EditPage::importFormData';
 472                 wfProfileIn( $fname );
 473
 474                 if( $request->wasPosted() ) {
 475                         # These fields need to be checked for encoding.
 476                         # Also remove trailing whitespace, but don't remove _initial_
 477                         # whitespace from the text boxes. This may be significant formatting.
 478                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 479                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 480                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 481                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 482                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 483
 484                         $this->edittime = $request->getVal( 'wpEdittime' );
 485                         $this->starttime = $request->getVal( 'wpStarttime' );
 486
 487                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 488
 489                         if( is_null( $this->edittime ) ) {
 490                                 # If the form is incomplete, force to preview.
 491                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 492                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 493                                 $this->preview  = true;
 494                         } else {
 495                                 /* Fallback for live preview */
 496                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 497                                 $this->diff = $request->getCheck( 'wpDiff' );
 498
 499                                 // Remember whether a save was requested, so we can indicate
 500                                 // if we forced preview due to session failure.
 501                                 $this->mTriedSave = !$this->preview;
 502
 503                                 if ( $this->tokenOk( $request ) ) {
 504                                         # Some browsers will not report any submit button
 505                                         # if the user hits enter in the comment box.
 506                                         # The unmarked state will be assumed to be a save,
 507                                         # if the form seems otherwise complete.
 508                                         wfDebug( "$fname: Passed token check.\n" );
 509                                 } else if ( $this->diff ) {
 510                                         # Failed token check, but only requested "Show Changes".
 511                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 512                                 } else {
 513                                         # Page might be a hack attempt posted from
 514                                         # an external site. Preview instead of saving.
 515                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 516                                         $this->preview = true;
 517                                 }
 518                         }
 519                         $this->save    = ! ( $this->preview OR $this->diff );
 520                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 521                                 $this->edittime = null;
 522                         }
 523
 524                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 525                                 $this->starttime = null;
 526                         }
 527
 528                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 529
 530                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 531                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 532
 533                         # Don't force edit summaries when a user is editing their own user or talk page
 534                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 535                                 $this->allowBlankSummary = true;
 536                         } else {
 537                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 538                         }
 539
 540                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 541                 } else {
 542                         # Not a posted form? Start with nothing.
 543                         wfDebug( "$fname: Not a posted form.\n" );
 544                         $this->textbox1  = '';
 545                         $this->textbox2  = '';
 546                         $this->mMetaData = '';
 547                         $this->summary   = '';
 548                         $this->edittime  = '';
 549                         $this->starttime = wfTimestampNow();
 550                         $this->edit      = false;
 551                         $this->preview   = false;
 552                         $this->save      = false;
 553                         $this->diff      = false;
 554                         $this->minoredit = false;
 555                         $this->watchthis = false;
 556                         $this->recreate  = false;
 557                 }
 558
 559                 $this->oldid = $request->getInt( 'oldid' );
 560
 561                 # Section edit can come from either the form or a link
 562                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 563
 564                 $this->live = $request->getCheck( 'live' );
 565                 $this->editintro = $request->getText( 'editintro' );
 566
 567                 wfProfileOut( $fname );
 568         }
 569
 570         /**
 571          * Make sure the form isn't faking a user's credentials.
 572          *
 573          * @param $request WebRequest
 574          * @return bool
 575          * @private
 576          */
 577         function tokenOk( &$request ) {
 578                 global $wgUser;
 579                 $token = $request->getVal( 'wpEditToken' );
 580                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 581                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 582                 return $this->mTokenOk;
 583         }
 584
 585         /**
 586          * Show all applicable editing introductions
 587          */
 588         private function showIntro() {
 589                 global $wgOut, $wgUser;
 590                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 591                         if( $wgUser->isLoggedIn() ) {
 592                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 593                         } else {
 594                                 $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
 595                         }
 596                         $this->showDeletionLog( $wgOut );
 597                 }
 598         }
 599
 600         /**
 601          * Attempt to show a custom editing introduction, if supplied
 602          *
 603          * @return bool
 604          */
 605         private function showCustomIntro() {
 606                 if( $this->editintro ) {
 607                         $title = Title::newFromText( $this->editintro );
 608                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 609                                 global $wgOut;
 610                                 $revision = Revision::newFromTitle( $title );
 611                                 $wgOut->addSecondaryWikiText( $revision->getText() );
 612                                 return true;
 613                         } else {
 614                                 return false;
 615                         }
 616                 } else {
 617                         return false;
 618                 }
 619         }
 620
 621         /**
 622          * Attempt submission
 623          * @return bool false if output is done, true if the rest of the form should be displayed
 624          */
 625         function attemptSave() {
 626                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 627                 global $wgMaxArticleSize;
 628
 629                 $fname = 'EditPage::attemptSave';
 630                 wfProfileIn( $fname );
 631                 wfProfileIn( "$fname-checks" );
 632
 633                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 634                 {
 635                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 636                         return false;
 637                 }
 638
 639                 # Reintegrate metadata
 640                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 641                 $this->mMetaData = '' ;
 642
 643                 # Check for spam
 644                 $matches = array();
 645                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 646                         $this->spamPage ( $matches[0] );
 647                         wfProfileOut( "$fname-checks" );
 648                         wfProfileOut( $fname );
 649                         return false;
 650                 }
 651                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 652                         # Error messages or other handling should be performed by the filter function
 653                         wfProfileOut( $fname );
 654                         wfProfileOut( "$fname-checks" );
 655                         return false;
 656                 }
 657                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 658                         # Error messages etc. could be handled within the hook...
 659                         wfProfileOut( $fname );
 660                         wfProfileOut( "$fname-checks" );
 661                         return false;
 662                 } elseif( $this->hookError != '' ) {
 663                         # ...or the hook could be expecting us to produce an error
 664                         wfProfileOut( "$fname-checks " );
 665                         wfProfileOut( $fname );
 666                         return true;
 667                 }
 668                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 669                         # Check block state against master, thus 'false'.
 670                         $this->blockedPage();
 671                         wfProfileOut( "$fname-checks" );
 672                         wfProfileOut( $fname );
 673                         return false;
 674                 }
 675                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 676                 if ( $this->kblength > $wgMaxArticleSize ) {
 677                         // Error will be displayed by showEditForm()
 678                         $this->tooBig = true;
 679                         wfProfileOut( "$fname-checks" );
 680                         wfProfileOut( $fname );
 681                         return true;
 682                 }
 683
 684                 if ( !$wgUser->isAllowed('edit') ) {
 685                         if ( $wgUser->isAnon() ) {
 686                                 $this->userNotLoggedInPage();
 687                                 wfProfileOut( "$fname-checks" );
 688                                 wfProfileOut( $fname );
 689                                 return false;
 690                         }
 691                         else {
 692                                 $wgOut->readOnlyPage();
 693                                 wfProfileOut( "$fname-checks" );
 694                                 wfProfileOut( $fname );
 695                                 return false;
 696                         }
 697                 }
 698
 699                 if ( wfReadOnly() ) {
 700                         $wgOut->readOnlyPage();
 701                         wfProfileOut( "$fname-checks" );
 702                         wfProfileOut( $fname );
 703                         return false;
 704                 }
 705                 if ( $wgUser->pingLimiter() ) {
 706                         $wgOut->rateLimited();
 707                         wfProfileOut( "$fname-checks" );
 708                         wfProfileOut( $fname );
 709                         return false;
 710                 }
 711
 712                 # If the article has been deleted while editing, don't save it without
 713                 # confirmation
 714                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 715                         wfProfileOut( "$fname-checks" );
 716                         wfProfileOut( $fname );
 717                         return true;
 718                 }
 719
 720                 wfProfileOut( "$fname-checks" );
 721
 722                 # If article is new, insert it.
 723                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 724                 if ( 0 == $aid ) {
 725
 726                         // Late check for create permission, just in case *PARANOIA*
 727                         if ( !$this->mTitle->userCan( 'create' ) ) {
 728                                 wfDebug( "$fname: no create permission\n" );
 729                                 $this->noCreatePermission();
 730                                 wfProfileOut( $fname );
 731                                 return;
 732                         }
 733
 734                         # Don't save a new article if it's blank.
 735                         if ( ( '' == $this->textbox1 ) ) {
 736                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 737                                         wfProfileOut( $fname );
 738                                         return false;
 739                         }
 740
 741                         $isComment=($this->section=='new');
 742                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 743                                 $this->minoredit, $this->watchthis, false, $isComment);
 744
 745                         wfProfileOut( $fname );
 746                         return false;
 747                 }
 748
 749                 # Article exists. Check for edit conflict.
 750
 751                 $this->mArticle->clear(); # Force reload of dates, etc.
 752                 $this->mArticle->forUpdate( true ); # Lock the article
 753
 754                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 755
 756                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 757                         $this->isConflict = true;
 758                         if( $this->section == 'new' ) {
 759                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 760                                         $this->mArticle->getComment() == $this->summary ) {
 761                                         // Probably a duplicate submission of a new comment.
 762                                         // This can happen when squid resends a request after
 763                                         // a timeout but the first one actually went through.
 764                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 765                                 } else {
 766                                         // New comment; suppress conflict.
 767                                         $this->isConflict = false;
 768                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 769                                 }
 770                         }
 771                 }
 772                 $userid = $wgUser->getID();
 773
 774                 if ( $this->isConflict) {
 775                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 776                                 $this->mArticle->getTimestamp() . "')\n" );
 777                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 778                 }
 779                 else {
 780                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 781                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 782                 }
 783                 if( is_null( $text ) ) {
 784                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 785                         $this->isConflict = true;
 786                         $text = $this->textbox1;
 787                 }
 788
 789                 # Suppress edit conflict with self, except for section edits where merging is required.
 790                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 791                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 792                         $this->isConflict = false;
 793                 } else {
 794                         # switch from section editing to normal editing in edit conflict
 795                         if($this->isConflict) {
 796                                 # Attempt merge
 797                                 if( $this->mergeChangesInto( $text ) ){
 798                                         // Successful merge! Maybe we should tell the user the good news?
 799                                         $this->isConflict = false;
 800                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 801                                 } else {
 802                                         $this->section = '';
 803                                         $this->textbox1 = $text;
 804                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 805                                 }
 806                         }
 807                 }
 808
 809                 if ( $this->isConflict ) {
 810                         wfProfileOut( $fname );
 811                         return true;
 812                 }
 813
 814                 $oldtext = $this->mArticle->getContent();
 815
 816                 # Handle the user preference to force summaries here, but not for null edits
 817                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 818                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 819                         if( md5( $this->summary ) == $this->autoSumm ) {
 820                                 $this->missingSummary = true;
 821                                 wfProfileOut( $fname );
 822                                 return( true );
 823                         }
 824                 }
 825
 826                 #And a similar thing for new sections
 827                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 828                         if (trim($this->summary) == '') {
 829                                 $this->missingSummary = true;
 830                                 wfProfileOut( $fname );
 831                                 return( true );
 832                         }
 833                 }
 834
 835                 # All's well
 836                 wfProfileIn( "$fname-sectionanchor" );
 837                 $sectionanchor = '';
 838                 if( $this->section == 'new' ) {
 839                         if ( $this->textbox1 == '' ) {
 840                                 $this->missingComment = true;
 841                                 return true;
 842                         }
 843                         if( $this->summary != '' ) {
 844                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 845                                 # This is a new section, so create a link to the new section
 846                                 # in the revision summary.
 847                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 848                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 849                         }
 850                 } elseif( $this->section != '' ) {
 851                         # Try to get a section anchor from the section source, redirect to edited section if header found
 852                         # XXX: might be better to integrate this into Article::replaceSection
 853                         # for duplicate heading checking and maybe parsing
 854                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 855                         # we can't deal with anchors, includes, html etc in the header for now,
 856                         # headline would need to be parsed to improve this
 857                         if($hasmatch and strlen($matches[2]) > 0) {
 858                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 859                         }
 860                 }
 861                 wfProfileOut( "$fname-sectionanchor" );
 862
 863                 // Save errors may fall down to the edit form, but we've now
 864                 // merged the section into full text. Clear the section field
 865                 // so that later submission of conflict forms won't try to
 866                 // replace that into a duplicated mess.
 867                 $this->textbox1 = $text;
 868                 $this->section = '';
 869
 870                 // Check for length errors again now that the section is merged in
 871                 $this->kblength = (int)(strlen( $text ) / 1024);
 872                 if ( $this->kblength > $wgMaxArticleSize ) {
 873                         $this->tooBig = true;
 874                         wfProfileOut( $fname );
 875                         return true;
 876                 }
 877
 878                 # update the article here
 879                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 880                         $this->watchthis, '', $sectionanchor ) ) {
 881                         wfProfileOut( $fname );
 882                         return false;
 883                 } else {
 884                         $this->isConflict = true;
 885                 }
 886                 wfProfileOut( $fname );
 887                 return true;
 888         }
 889
 890         /**
 891          * Initialise form fields in the object
 892          * Called on the first invocation, e.g. when a user clicks an edit link
 893          */
 894         function initialiseForm() {
 895                 $this->edittime = $this->mArticle->getTimestamp();
 896                 $this->summary = '';
 897                 $this->textbox1 = $this->getContent(false);
 898                 if ($this->textbox1 === false) return false;
 899
 900                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 901                         $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
 902                 wfProxyCheck();
 903                 return true;
 904         }
 905
 906         /**
 907          * Send the edit form and related headers to $wgOut
 908          * @param $formCallback Optional callable that takes an OutputPage
 909          *                      parameter; will be called during form output
 910          *                      near the top, for captchas and the like.
 911          */
 912         function showEditForm( $formCallback=null ) {
 913                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 914
 915                 $fname = 'EditPage::showEditForm';
 916                 wfProfileIn( $fname );
 917
 918                 $sk = $wgUser->getSkin();
 919
 920                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 921
 922                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 923
 924                 # Enabled article-related sidebar, toplinks, etc.
 925                 $wgOut->setArticleRelated( true );
 926
 927                 if ( $this->formtype == 'preview' ) {
 928                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
 929                 }
 930
 931                 if ( $this->isConflict ) {
 932                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 933                         $wgOut->setPageTitle( $s );
 934                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 935
 936                         $this->textbox2 = $this->textbox1;
 937                         $this->textbox1 = $this->getContent();
 938                         $this->edittime = $this->mArticle->getTimestamp();
 939                 } else {
 940
 941                         if( $this->section != '' ) {
 942                                 if( $this->section == 'new' ) {
 943                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 944                                 } else {
 945                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 946                                         $matches = array();
 947                                         if( !$this->summary && !$this->preview && !$this->diff ) {
 948                                                 preg_match( "/^(=+)(.+)\\1/mi",
 949                                                         $this->textbox1,
 950                                                         $matches );
 951                                                 if( !empty( $matches[2] ) ) {
 952                                                         global $wgParser;
 953                                                         $this->summary = "/* " .
 954                                                                 $wgParser->stripSectionName(trim($matches[2])) .
 955                                                                 " */ ";
 956                                                 }
 957                                         }
 958                                 }
 959                         } else {
 960                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 961                         }
 962                         $wgOut->setPageTitle( $s );
 963
 964                         if ( $this->missingComment ) {
 965                                 $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
 966                         }
 967
 968                         if( $this->missingSummary && $this->section != 'new' ) {
 969                                 $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
 970                         }
 971
 972                         if( $this->missingSummary && $this->section == 'new' ) {
 973                                 $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
 974                         }
 975
 976                         if( !$this->hookError == '' ) {
 977                                 $wgOut->addWikiText( $this->hookError );
 978                         }
 979
 980                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 981                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 982                         }
 983                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
 984                         // Let sysop know that this will make private content public if saved
 985                                 if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
 986                                         $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
 987                                 }
 988                                 if( !$this->mArticle->mRevision->isCurrent() ) {
 989                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
 990                                         $wgOut->addWikiText( wfMsg( 'editingold' ) );
 991                                 }
 992                         }
 993                 }
 994
 995                 if( wfReadOnly() ) {
 996                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 997                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
 998                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
 999                 } else {
1000                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1001                                 # Check the skin exists
1002                                 if( $this->isValidCssJsSubpage ) {
1003                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
1004                                 } else {
1005                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
1006                                 }
1007                         }
1008                 }
1009
1010                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1011                         # Show a warning if editing an interface message
1012                         $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
1013                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1014                         # Is the title semi-protected?
1015                         if( $this->mTitle->isSemiProtected() ) {
1016                                 $notice = wfMsg( 'semiprotectedpagewarning' );
1017                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
1018                                         $notice = '';
1019                         } else {
1020                         # Then it must be protected based on static groups (regular)
1021                                 $notice = wfMsg( 'protectedpagewarning' );
1022                         }
1023                         $wgOut->addWikiText( $notice );
1024                 }
1025                 if ( $this->mTitle->isCascadeProtected() ) {
1026                         # Is this page under cascading protection from some source pages?
1027                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1028                         if ( count($cascadeSources) > 0 ) {
1029                                 # Explain, and list the titles responsible
1030                                 $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
1031                                 foreach( $cascadeSources as $page ) {
1032                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1033                                 }
1034                         }
1035                         $wgOut->addWikiText( $notice );
1036                 }
1037
1038                 if ( $this->kblength === false ) {
1039                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1040                 }
1041                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1042                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
1043                 } elseif( $this->kblength > 29 ) {
1044                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
1045                 }
1046
1047                 #need to parse the preview early so that we know which templates are used,
1048                 #otherwise users with "show preview after edit box" will get a blank list
1049                 if ( $this->formtype == 'preview' ) {
1050                         $previewOutput = $this->getPreviewText();
1051                 }
1052
1053                 $rows = $wgUser->getIntOption( 'rows' );
1054                 $cols = $wgUser->getIntOption( 'cols' );
1055
1056                 $ew = $wgUser->getOption( 'editwidth' );
1057                 if ( $ew ) $ew = " style=\"width:100%\"";
1058                 else $ew = '';
1059
1060                 $q = 'action=submit';
1061                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1062                 $action = $this->mTitle->escapeLocalURL( $q );
1063
1064                 $summary = wfMsg('summary');
1065                 $subject = wfMsg('subject');
1066
1067                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
1068                                 wfMsgExt('cancel', array('parseinline')) );
1069                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1070                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1071                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1072                         htmlspecialchars( wfMsg( 'newwindow' ) );
1073
1074                 global $wgRightsText;
1075                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
1076                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
1077                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1078                                 $wgRightsText ) . "\n</div>";
1079
1080                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1081                         # prepare toolbar for edit buttons
1082                         $toolbar = $this->getEditToolbar();
1083                 } else {
1084                         $toolbar = '';
1085                 }
1086
1087                 // activate checkboxes if user wants them to be always active
1088                 if( !$this->preview && !$this->diff ) {
1089                         # Sort out the "watch" checkbox
1090                         if( $wgUser->getOption( 'watchdefault' ) ) {
1091                                 # Watch all edits
1092                                 $this->watchthis = true;
1093                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1094                                 # Watch creations
1095                                 $this->watchthis = true;
1096                         } elseif( $this->mTitle->userIsWatching() ) {
1097                                 # Already watched
1098                                 $this->watchthis = true;
1099                         }
1100
1101                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1102                 }
1103
1104                 $wgOut->addHTML( $this->editFormPageTop );
1105
1106                 if ( $wgUser->getOption( 'previewontop' ) ) {
1107
1108                         if ( 'preview' == $this->formtype ) {
1109                                 $this->showPreview( $previewOutput );
1110                         } else {
1111                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1112                         }
1113
1114                         if ( 'diff' == $this->formtype ) {
1115                                 $this->showDiff();
1116                         }
1117                 }
1118
1119
1120                 $wgOut->addHTML( $this->editFormTextTop );
1121
1122                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1123                 # Otherwise, show a summary field at the bottom
1124                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1125                 if( $this->section == 'new' ) {
1126                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1127                         $editsummary = '';
1128                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1129                         $summarypreview = '';
1130                 } else {
1131                         $commentsubject = '';
1132                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1133                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1134                         $subjectpreview = '';
1135                 }
1136
1137                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1138                 if( !$this->preview && !$this->diff ) {
1139                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1140                 }
1141                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1142                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1143
1144                 global $wgUseMetadataEdit ;
1145                 if ( $wgUseMetadataEdit ) {
1146                         $metadata = $this->mMetaData ;
1147                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1148                         $top = wfMsgWikiHtml( 'metadata_help' );
1149                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1150                 }
1151                 else $metadata = "" ;
1152
1153                 $hidden = '';
1154                 $recreate = '';
1155                 if ($this->deletedSinceEdit) {
1156                         if ( 'save' != $this->formtype ) {
1157                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
1158                         } else {
1159                                 // Hide the toolbar and edit area, use can click preview to get it back
1160                                 // Add an confirmation checkbox and explanation.
1161                                 $toolbar = '';
1162                                 $hidden = 'type="hidden" style="display:none;"';
1163                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1164                                 $recreate .=
1165                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1166                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1167                         }
1168                 }
1169
1170                 $tabindex = 2;
1171
1172                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1173                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1174
1175                 $checkboxhtml = implode( $checkboxes, "\n" );
1176
1177                 $buttons = $this->getEditButtons( $tabindex );
1178                 $buttonshtml = implode( $buttons, "\n" );
1179
1180                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1181                         ? '' : Xml::hidden( 'safemode', '1' );
1182
1183                 $wgOut->addHTML( <<<END
1184 {$toolbar}
1185 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1186 END
1187 );
1188
1189                 if( is_callable( $formCallback ) ) {
1190                         call_user_func_array( $formCallback, array( &$wgOut ) );
1191                 }
1192
1193                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1194
1195                 // Put these up at the top to ensure they aren't lost on early form submission
1196                 $wgOut->addHTML( "
1197 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1198 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1199 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1200 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1201
1202                 $wgOut->addHTML( <<<END
1203 $recreate
1204 {$commentsubject}
1205 {$subjectpreview}
1206 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1207 cols='{$cols}'{$ew} $hidden>
1208 END
1209 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1210 "
1211 </textarea>
1212                 " );
1213
1214                 $wgOut->addWikiText( $copywarn );
1215                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1216                 $wgOut->addHTML( "
1217 {$metadata}
1218 {$editsummary}
1219 {$summarypreview}
1220 {$checkboxhtml}
1221 {$safemodehtml}
1222 ");
1223
1224                 $wgOut->addHTML(
1225 "<div class='editButtons'>
1226 {$buttonshtml}
1227         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1228 </div><!-- editButtons -->
1229 </div><!-- editOptions -->");
1230
1231                 $wgOut->addHtml( '<div class="mw-editTools">' );
1232                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1233                 $wgOut->addHtml( '</div>' );
1234
1235                 $wgOut->addHTML( $this->editFormTextAfterTools );
1236
1237                 $wgOut->addHTML( "
1238 <div class='templatesUsed'>
1239 {$formattedtemplates}
1240 </div>
1241 " );
1242
1243                 /**
1244                  * To make it harder for someone to slip a user a page
1245                  * which submits an edit form to the wiki without their
1246                  * knowledge, a random token is associated with the login
1247                  * session. If it's not passed back with the submission,
1248                  * we won't save the page, or render user JavaScript and
1249                  * CSS previews.
1250                  *
1251                  * For anon editors, who may not have a session, we just
1252                  * include the constant suffix to prevent editing from
1253                  * broken text-mangling proxies.
1254                  */
1255                 $token = htmlspecialchars( $wgUser->editToken() );
1256                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1257
1258
1259                 # If a blank edit summary was previously provided, and the appropriate
1260                 # user preference is active, pass a hidden tag here. This will stop the
1261                 # user being bounced back more than once in the event that a summary
1262                 # is not required.
1263                 if( $this->missingSummary ) {
1264                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1265                 }
1266
1267                 # For a bit more sophisticated detection of blank summaries, hash the
1268                 # automatic one and pass that in a hidden field.
1269                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1270                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1271
1272                 if ( $this->isConflict ) {
1273                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1274
1275                         $de = new DifferenceEngine( $this->mTitle );
1276                         $de->setText( $this->textbox2, $this->textbox1 );
1277                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1278
1279                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1280                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1281                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1282                 }
1283                 $wgOut->addHTML( $this->editFormTextBottom );
1284                 $wgOut->addHTML( "</form>\n" );
1285                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1286
1287                         if ( $this->formtype == 'preview') {
1288                                 $this->showPreview( $previewOutput );
1289                         } else {
1290                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1291                         }
1292
1293                         if ( $this->formtype == 'diff') {
1294                                 $this->showDiff();
1295                         }
1296
1297                 }
1298
1299                 wfProfileOut( $fname );
1300         }
1301
1302         /**
1303          * Append preview output to $wgOut.
1304          * Includes category rendering if this is a category page.
1305          *
1306          * @param string $text The HTML to be output for the preview.
1307          */
1308         private function showPreview( $text ) {
1309                 global $wgOut;
1310
1311                 $wgOut->addHTML( '<div id="wikiPreview">' );
1312                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1313                         $this->mArticle->openShowCategory();
1314                 }
1315                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1316                 $wgOut->addHTML( $text );
1317                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1318                         $this->mArticle->closeShowCategory();
1319                 }
1320                 $wgOut->addHTML( '</div>' );
1321         }
1322
1323         /**
1324          * Live Preview lets us fetch rendered preview page content and
1325          * add it to the page without refreshing the whole page.
1326          * If not supported by the browser it will fall through to the normal form
1327          * submission method.
1328          *
1329          * This function outputs a script tag to support live preview, and
1330          * returns an onclick handler which should be added to the attributes
1331          * of the preview button
1332          */
1333         function doLivePreviewScript() {
1334                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1335                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1336                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1337                         '"></script>' . "\n" );
1338                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1339                 return "return !livePreview(" .
1340                         "getElementById('wikiPreview')," .
1341                         "editform.wpTextbox1.value," .
1342                         '"' . $liveAction . '"' . ")";
1343         }
1344
1345         function getLastDelete() {
1346                 $dbr = wfGetDB( DB_SLAVE );
1347                 $fname = 'EditPage::getLastDelete';
1348                 $res = $dbr->select(
1349                         array( 'logging', 'user' ),
1350                         array( 'log_type',
1351                                'log_action',
1352                                'log_timestamp',
1353                                'log_user',
1354                                'log_namespace',
1355                                'log_title',
1356                                'log_comment',
1357                                'log_params',
1358                                'user_name', ),
1359                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1360                                'log_title' => $this->mTitle->getDBkey(),
1361                                'log_type' => 'delete',
1362                                'log_action' => 'delete',
1363                                'user_id=log_user' ),
1364                         $fname,
1365                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1366
1367                 if($dbr->numRows($res) == 1) {
1368                         while ( $x = $dbr->fetchObject ( $res ) )
1369                                 $data = $x;
1370                         $dbr->freeResult ( $res ) ;
1371                 } else {
1372                         $data = null;
1373                 }
1374                 return $data;
1375         }
1376
1377         /**
1378          * @todo document
1379          */
1380         function getPreviewText() {
1381                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1382
1383                 $fname = 'EditPage::getPreviewText';
1384                 wfProfileIn( $fname );
1385
1386                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1387                         if ( $this->mTokenOkExceptSuffix ) {
1388                                 $msg = 'token_suffix_mismatch';
1389                         } else {
1390                                 $msg = 'session_fail_preview';
1391                         }
1392                 } else {
1393                         $msg = 'previewnote';
1394                 }
1395                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1396                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1397                 if ( $this->isConflict ) {
1398                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1399                 }
1400
1401                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1402                 $parserOptions->setEditSection( false );
1403
1404                 global $wgRawHtml;
1405                 if( $wgRawHtml && !$this->mTokenOk ) {
1406                         // Could be an offsite preview attempt. This is very unsafe if
1407                         // HTML is enabled, as it could be an attack.
1408                         return $wgOut->parse( "<div class='previewnote'>" .
1409                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1410                 }
1411
1412                 # don't parse user css/js, show message about preview
1413                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1414
1415                 if ( $this->isCssJsSubpage ) {
1416                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1417                                 $previewtext = wfMsg('usercsspreview');
1418                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1419                                 $previewtext = wfMsg('userjspreview');
1420                         }
1421                         $parserOptions->setTidy(true);
1422                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1423                         $wgOut->addHTML( $parserOutput->mText );
1424                         wfProfileOut( $fname );
1425                         return $previewhead;
1426                 } else {
1427                         $toparse = $this->textbox1;
1428
1429                         # If we're adding a comment, we need to show the
1430                         # summary as the headline
1431                         if($this->section=="new" && $this->summary!="") {
1432                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1433                         }
1434
1435                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1436                         $parserOptions->setTidy(true);
1437                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1438                                         $wgTitle, $parserOptions );
1439
1440                         $previewHTML = $parserOutput->getText();
1441                         $wgOut->addParserOutputNoText( $parserOutput );
1442
1443                         # ParserOutput might have altered the page title, so reset it
1444                         $wgOut->setPageTitle( wfMsg( 'editing', $this->mTitle->getPrefixedText() ) );
1445
1446                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1447                                 foreach ( array_keys( $template ) as $dbk)
1448                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1449
1450                         wfProfileOut( $fname );
1451                         return $previewhead . $previewHTML;
1452                 }
1453         }
1454
1455         /**
1456          * Call the stock "user is blocked" page
1457          */
1458         function blockedPage() {
1459                 global $wgOut, $wgUser;
1460                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1461
1462                 # If the user made changes, preserve them when showing the markup
1463                 # (This happens when a user is blocked during edit, for instance)
1464                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1465                 if( $first ) {
1466                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1467                 } else {
1468                         $source = $this->textbox1;
1469                 }
1470
1471                 # Spit out the source or the user's modified version
1472                 if( $source !== false ) {
1473                         $rows = $wgUser->getOption( 'rows' );
1474                         $cols = $wgUser->getOption( 'cols' );
1475                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1476                         $wgOut->addHtml( '<hr />' );
1477                         $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
1478                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1479                 }
1480         }
1481
1482         /**
1483          * Produce the stock "please login to edit pages" page
1484          */
1485         function userNotLoggedInPage() {
1486                 global $wgUser, $wgOut;
1487                 $skin = $wgUser->getSkin();
1488
1489                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1490                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1491
1492                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1493                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1494                 $wgOut->setArticleRelated( false );
1495
1496                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1497                 $wgOut->returnToMain( false, $this->mTitle );
1498         }
1499
1500         /**
1501          * Creates a basic error page which informs the user that
1502          * they have to validate their email address before being
1503          * allowed to edit.
1504          */
1505         function userNotConfirmedPage() {
1506                 global $wgOut;
1507
1508                 $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
1509                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1510                 $wgOut->setArticleRelated( false );
1511
1512                 $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
1513                 $wgOut->returnToMain( false, $this->mTitle );
1514         }
1515
1516         /**
1517          * Creates a basic error page which informs the user that
1518          * they have attempted to edit a nonexistant section.
1519          */
1520         function noSuchSectionPage() {
1521                 global $wgOut;
1522
1523                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1524                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1525                 $wgOut->setArticleRelated( false );
1526
1527                 $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
1528                 $wgOut->returnToMain( false, $this->mTitle );
1529         }
1530
1531         /**
1532          * Produce the stock "your edit contains spam" page
1533          *
1534          * @param $match Text which triggered one or more filters
1535          */
1536         function spamPage( $match = false ) {
1537                 global $wgOut;
1538
1539                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1540                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1541                 $wgOut->setArticleRelated( false );
1542
1543                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1544                 if ( $match )
1545                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1546
1547                 $wgOut->returnToMain( false, $this->mTitle );
1548         }
1549
1550         /**
1551          * @private
1552          * @todo document
1553          */
1554         function mergeChangesInto( &$editText ){
1555                 $fname = 'EditPage::mergeChangesInto';
1556                 wfProfileIn( $fname );
1557
1558                 $db = wfGetDB( DB_MASTER );
1559
1560                 // This is the revision the editor started from
1561                 $baseRevision = Revision::loadFromTimestamp(
1562                         $db, $this->mArticle->mTitle, $this->edittime );
1563                 if( is_null( $baseRevision ) ) {
1564                         wfProfileOut( $fname );
1565                         return false;
1566                 }
1567                 $baseText = $baseRevision->getText();
1568
1569                 // The current state, we want to merge updates into it
1570                 $currentRevision =  Revision::loadFromTitle(
1571                         $db, $this->mArticle->mTitle );
1572                 if( is_null( $currentRevision ) ) {
1573                         wfProfileOut( $fname );
1574                         return false;
1575                 }
1576                 $currentText = $currentRevision->getText();
1577
1578                 $result = '';
1579                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1580                         $editText = $result;
1581                         wfProfileOut( $fname );
1582                         return true;
1583                 } else {
1584                         wfProfileOut( $fname );
1585                         return false;
1586                 }
1587         }
1588
1589         /**
1590          * Check if the browser is on a blacklist of user-agents known to
1591          * mangle UTF-8 data on form submission. Returns true if Unicode
1592          * should make it through, false if it's known to be a problem.
1593          * @return bool
1594          * @private
1595          */
1596         function checkUnicodeCompliantBrowser() {
1597                 global $wgBrowserBlackList;
1598                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1599                         // No User-Agent header sent? Trust it by default...
1600                         return true;
1601                 }
1602                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1603                 foreach ( $wgBrowserBlackList as $browser ) {
1604                         if ( preg_match($browser, $currentbrowser) ) {
1605                                 return false;
1606                         }
1607                 }
1608                 return true;
1609         }
1610
1611         /**
1612          * @deprecated use $wgParser->stripSectionName()
1613          */
1614         function pseudoParseSectionAnchor( $text ) {
1615                 global $wgParser;
1616                 return $wgParser->stripSectionName( $text );
1617         }
1618
1619         /**
1620          * Format an anchor fragment as it would appear for a given section name
1621          * @param string $text
1622          * @return string
1623          * @private
1624          */
1625         function sectionAnchor( $text ) {
1626                 global $wgParser;
1627                 return $wgParser->guessSectionNameFromWikiText( $text );
1628         }
1629
1630         /**
1631          * Shows a bulletin board style toolbar for common editing functions.
1632          * It can be disabled in the user preferences.
1633          * The necessary JavaScript code can be found in style/wikibits.js.
1634          */
1635         function getEditToolbar() {
1636                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1637
1638                 /**
1639                  * toolarray an array of arrays which each include the filename of
1640                  * the button image (without path), the opening tag, the closing tag,
1641                  * and optionally a sample text that is inserted between the two when no
1642                  * selection is highlighted.
1643                  * The tip text is shown when the user moves the mouse over the button.
1644                  *
1645                  * Already here are accesskeys (key), which are not used yet until someone
1646                  * can figure out a way to make them work in IE. However, we should make
1647                  * sure these keys are not defined on the edit page.
1648                  */
1649                 $toolarray = array(
1650                         array(  'image' => 'button_bold.png',
1651                                 'id'    => 'mw-editbutton-bold',
1652                                 'open'  => '\\\'\\\'\\\'',
1653                                 'close' => '\\\'\\\'\\\'',
1654                                 'sample'=> wfMsg('bold_sample'),
1655                                 'tip'   => wfMsg('bold_tip'),
1656                                 'key'   => 'B'
1657                         ),
1658                         array(  'image' => 'button_italic.png',
1659                                 'id'    => 'mw-editbutton-italic',
1660                                 'open'  => '\\\'\\\'',
1661                                 'close' => '\\\'\\\'',
1662                                 'sample'=> wfMsg('italic_sample'),
1663                                 'tip'   => wfMsg('italic_tip'),
1664                                 'key'   => 'I'
1665                         ),
1666                         array(  'image' => 'button_link.png',
1667                                 'id'    => 'mw-editbutton-link',
1668                                 'open'  => '[[',
1669                                 'close' => ']]',
1670                                 'sample'=> wfMsg('link_sample'),
1671                                 'tip'   => wfMsg('link_tip'),
1672                                 'key'   => 'L'
1673                         ),
1674                         array(  'image' => 'button_extlink.png',
1675                                 'id'    => 'mw-editbutton-extlink',
1676                                 'open'  => '[',
1677                                 'close' => ']',
1678                                 'sample'=> wfMsg('extlink_sample'),
1679                                 'tip'   => wfMsg('extlink_tip'),
1680                                 'key'   => 'X'
1681                         ),
1682                         array(  'image' => 'button_headline.png',
1683                                 'id'    => 'mw-editbutton-headline',
1684                                 'open'  => "\\n== ",
1685                                 'close' => " ==\\n",
1686                                 'sample'=> wfMsg('headline_sample'),
1687                                 'tip'   => wfMsg('headline_tip'),
1688                                 'key'   => 'H'
1689                         ),
1690                         array(  'image' => 'button_image.png',
1691                                 'id'    => 'mw-editbutton-image',
1692                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1693                                 'close' => ']]',
1694                                 'sample'=> wfMsg('image_sample'),
1695                                 'tip'   => wfMsg('image_tip'),
1696                                 'key'   => 'D'
1697                         ),
1698                         array(  'image' => 'button_media.png',
1699                                 'id'    => 'mw-editbutton-media',
1700                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1701                                 'close' => ']]',
1702                                 'sample'=> wfMsg('media_sample'),
1703                                 'tip'   => wfMsg('media_tip'),
1704                                 'key'   => 'M'
1705                         ),
1706                         array(  'image' => 'button_math.png',
1707                                 'id'    => 'mw-editbutton-math',
1708                                 'open'  => "<math>",
1709                                 'close' => "<\\/math>",
1710                                 'sample'=> wfMsg('math_sample'),
1711                                 'tip'   => wfMsg('math_tip'),
1712                                 'key'   => 'C'
1713                         ),
1714                         array(  'image' => 'button_nowiki.png',
1715                                 'id'    => 'mw-editbutton-nowiki',
1716                                 'open'  => "<nowiki>",
1717                                 'close' => "<\\/nowiki>",
1718                                 'sample'=> wfMsg('nowiki_sample'),
1719                                 'tip'   => wfMsg('nowiki_tip'),
1720                                 'key'   => 'N'
1721                         ),
1722                         array(  'image' => 'button_sig.png',
1723                                 'id'    => 'mw-editbutton-signature',
1724                                 'open'  => '--~~~~',
1725                                 'close' => '',
1726                                 'sample'=> '',
1727                                 'tip'   => wfMsg('sig_tip'),
1728                                 'key'   => 'Y'
1729                         ),
1730                         array(  'image' => 'button_hr.png',
1731                                 'id'    => 'mw-editbutton-hr',
1732                                 'open'  => "\\n----\\n",
1733                                 'close' => '',
1734                                 'sample'=> '',
1735                                 'tip'   => wfMsg('hr_tip'),
1736                                 'key'   => 'R'
1737                         )
1738                 );
1739                 $toolbar = "<div id='toolbar'>\n";
1740                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1741
1742                 foreach($toolarray as $tool) {
1743
1744                         $cssId = $tool['id'];
1745                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1746                         $open=$tool['open'];
1747                         $close=$tool['close'];
1748                         $sample = wfEscapeJsString( $tool['sample'] );
1749
1750                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1751                         // Older browsers show a "speedtip" type message only for ALT.
1752                         // Ideally these should be different, realistically they
1753                         // probably don't need to be.
1754                         $tip = wfEscapeJsString( $tool['tip'] );
1755
1756                         #$key = $tool["key"];
1757
1758                         $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
1759                 }
1760
1761                 $toolbar.="/*]]>*/\n</script>";
1762                 $toolbar.="\n</div>";
1763                 return $toolbar;
1764         }
1765
1766         /**
1767          * Returns an array of html code of the following checkboxes:
1768          * minor and watch
1769          *
1770          * @param $tabindex Current tabindex
1771          * @param $skin Skin object
1772          * @param $checked Array of checkbox => bool, where bool indicates the checked
1773          *                 status of the checkbox
1774          *
1775          * @return array
1776          */
1777         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1778                 global $wgUser;
1779
1780                 $checkboxes = array();
1781
1782                 $checkboxes['minor'] = '';
1783                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1784                 if ( $wgUser->isAllowed('minoredit') ) {
1785                         $attribs = array(
1786                                 'tabindex'  => ++$tabindex,
1787                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1788                                 'id'        => 'wpMinoredit',
1789                         );
1790                         $checkboxes['minor'] =
1791                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1792                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1793                 }
1794
1795                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1796                 $checkboxes['watch'] = '';
1797                 if ( $wgUser->isLoggedIn() ) {
1798                         $attribs = array(
1799                                 'tabindex'  => ++$tabindex,
1800                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1801                                 'id'        => 'wpWatchthis',
1802                         );
1803                         $checkboxes['watch'] =
1804                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1805                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1806                 }
1807                 return $checkboxes;
1808         }
1809
1810         /**
1811          * Returns an array of html code of the following buttons:
1812          * save, diff, preview and live
1813          *
1814          * @param $tabindex Current tabindex
1815          *
1816          * @return array
1817          */
1818         public function getEditButtons(&$tabindex) {
1819                 global $wgLivePreview, $wgUser;
1820
1821                 $buttons = array();
1822
1823                 $temp = array(
1824                         'id'        => 'wpSave',
1825                         'name'      => 'wpSave',
1826                         'type'      => 'submit',
1827                         'tabindex'  => ++$tabindex,
1828                         'value'     => wfMsg('savearticle'),
1829                         'accesskey' => wfMsg('accesskey-save'),
1830                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1831                 );
1832                 $buttons['save'] = wfElement('input', $temp, '');
1833
1834                 ++$tabindex; // use the same for preview and live preview
1835                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1836                         $temp = array(
1837                                 'id'        => 'wpPreview',
1838                                 'name'      => 'wpPreview',
1839                                 'type'      => 'submit',
1840                                 'tabindex'  => $tabindex,
1841                                 'value'     => wfMsg('showpreview'),
1842                                 'accesskey' => '',
1843                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1844                                 'style'     => 'display: none;',
1845                         );
1846                         $buttons['preview'] = wfElement('input', $temp, '');
1847
1848                         $temp = array(
1849                                 'id'        => 'wpLivePreview',
1850                                 'name'      => 'wpLivePreview',
1851                                 'type'      => 'submit',
1852                                 'tabindex'  => $tabindex,
1853                                 'value'     => wfMsg('showlivepreview'),
1854                                 'accesskey' => wfMsg('accesskey-preview'),
1855                                 'title'     => '',
1856                                 'onclick'   => $this->doLivePreviewScript(),
1857                         );
1858                         $buttons['live'] = wfElement('input', $temp, '');
1859                 } else {
1860                         $temp = array(
1861                                 'id'        => 'wpPreview',
1862                                 'name'      => 'wpPreview',
1863                                 'type'      => 'submit',
1864                                 'tabindex'  => $tabindex,
1865                                 'value'     => wfMsg('showpreview'),
1866                                 'accesskey' => wfMsg('accesskey-preview'),
1867                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1868                         );
1869                         $buttons['preview'] = wfElement('input', $temp, '');
1870                         $buttons['live'] = '';
1871                 }
1872
1873                 $temp = array(
1874                         'id'        => 'wpDiff',
1875                         'name'      => 'wpDiff',
1876                         'type'      => 'submit',
1877                         'tabindex'  => ++$tabindex,
1878                         'value'     => wfMsg('showdiff'),
1879                         'accesskey' => wfMsg('accesskey-diff'),
1880                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1881                 );
1882                 $buttons['diff'] = wfElement('input', $temp, '');
1883
1884                 return $buttons;
1885         }
1886
1887         /**
1888          * Output preview text only. This can be sucked into the edit page
1889          * via JavaScript, and saves the server time rendering the skin as
1890          * well as theoretically being more robust on the client (doesn't
1891          * disturb the edit box's undo history, won't eat your text on
1892          * failure, etc).
1893          *
1894          * @todo This doesn't include category or interlanguage links.
1895          *       Would need to enhance it a bit, <s>maybe wrap them in XML
1896          *       or something...</s> that might also require more skin
1897          *       initialization, so check whether that's a problem.
1898          */
1899         function livePreview() {
1900                 global $wgOut;
1901                 $wgOut->disable();
1902                 header( 'Content-type: text/xml; charset=utf-8' );
1903                 header( 'Cache-control: no-cache' );
1904
1905                 $s =
1906                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
1907                 Xml::openElement( 'livepreview' ) .
1908                 Xml::element( 'preview', null, $this->getPreviewText() ) .
1909                 Xml::element( 'br', array( 'style' => 'clear: both;' ) ) .
1910                 Xml::closeElement( 'livepreview' );
1911                 echo $s;
1912         }
1913
1914
1915         /**
1916          * Get a diff between the current contents of the edit box and the
1917          * version of the page we're editing from.
1918          *
1919          * If this is a section edit, we'll replace the section as for final
1920          * save and then make a comparison.
1921          */
1922         function showDiff() {
1923                 $oldtext = $this->mArticle->fetchContent();
1924                 $newtext = $this->mArticle->replaceSection(
1925                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1926                 $newtext = $this->mArticle->preSaveTransform( $newtext );
1927                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
1928                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
1929                 if ( $oldtext !== false  || $newtext != '' ) {
1930                         $de = new DifferenceEngine( $this->mTitle );
1931                         $de->setText( $oldtext, $newtext );
1932                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1933                         $de->showDiffStyle();
1934                 } else {
1935                         $difftext = '';
1936                 }
1937
1938                 global $wgOut;
1939                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
1940         }
1941
1942         /**
1943          * Filter an input field through a Unicode de-armoring process if it
1944          * came from an old browser with known broken Unicode editing issues.
1945          *
1946          * @param WebRequest $request
1947          * @param string $field
1948          * @return string
1949          * @private
1950          */
1951         function safeUnicodeInput( $request, $field ) {
1952                 $text = rtrim( $request->getText( $field ) );
1953                 return $request->getBool( 'safemode' )
1954                         ? $this->unmakesafe( $text )
1955                         : $text;
1956         }
1957
1958         /**
1959          * Filter an output field through a Unicode armoring process if it is
1960          * going to an old browser with known broken Unicode editing issues.
1961          *
1962          * @param string $text
1963          * @return string
1964          * @private
1965          */
1966         function safeUnicodeOutput( $text ) {
1967                 global $wgContLang;
1968                 $codedText = $wgContLang->recodeForEdit( $text );
1969                 return $this->checkUnicodeCompliantBrowser()
1970                         ? $codedText
1971                         : $this->makesafe( $codedText );
1972         }
1973
1974         /**
1975          * A number of web browsers are known to corrupt non-ASCII characters
1976          * in a UTF-8 text editing environment. To protect against this,
1977          * detected browsers will be served an armored version of the text,
1978          * with non-ASCII chars converted to numeric HTML character references.
1979          *
1980          * Preexisting such character references will have a 0 added to them
1981          * to ensure that round-trips do not alter the original data.
1982          *
1983          * @param string $invalue
1984          * @return string
1985          * @private
1986          */
1987         function makesafe( $invalue ) {
1988                 // Armor existing references for reversability.
1989                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1990
1991                 $bytesleft = 0;
1992                 $result = "";
1993                 $working = 0;
1994                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1995                         $bytevalue = ord( $invalue{$i} );
1996                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1997                                 $result .= chr( $bytevalue );
1998                                 $bytesleft = 0;
1999                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2000                                 $working = $working << 6;
2001                                 $working += ($bytevalue & 0x3F);
2002                                 $bytesleft--;
2003                                 if( $bytesleft <= 0 ) {
2004                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2005                                 }
2006                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2007                                 $working = $bytevalue & 0x1F;
2008                                 $bytesleft = 1;
2009                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2010                                 $working = $bytevalue & 0x0F;
2011                                 $bytesleft = 2;
2012                         } else { //1111 0xxx
2013                                 $working = $bytevalue & 0x07;
2014                                 $bytesleft = 3;
2015                         }
2016                 }
2017                 return $result;
2018         }
2019
2020         /**
2021          * Reverse the previously applied transliteration of non-ASCII characters
2022          * back to UTF-8. Used to protect data from corruption by broken web browsers
2023          * as listed in $wgBrowserBlackList.
2024          *
2025          * @param string $invalue
2026          * @return string
2027          * @private
2028          */
2029         function unmakesafe( $invalue ) {
2030                 $result = "";
2031                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2032                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2033                                 $i += 3;
2034                                 $hexstring = "";
2035                                 do {
2036                                         $hexstring .= $invalue{$i};
2037                                         $i++;
2038                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2039
2040                                 // Do some sanity checks. These aren't needed for reversability,
2041                                 // but should help keep the breakage down if the editor
2042                                 // breaks one of the entities whilst editing.
2043                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2044                                         $codepoint = hexdec($hexstring);
2045                                         $result .= codepointToUtf8( $codepoint );
2046                                 } else {
2047                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2048                                 }
2049                         } else {
2050                                 $result .= substr( $invalue, $i, 1 );
2051                         }
2052                 }
2053                 // reverse the transform that we made for reversability reasons.
2054                 return strtr( $result, array( "&#x0" => "&#x" ) );
2055         }
2056
2057         function noCreatePermission() {
2058                 global $wgOut;
2059                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2060                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
2061         }
2062
2063         /**
2064          * If there are rows in the deletion log for this page, show them,
2065          * along with a nice little note for the user
2066          *
2067          * @param OutputPage $out
2068          */
2069         private function showDeletionLog( $out ) {
2070                 $title = $this->mArticle->getTitle();
2071                 $reader = new LogReader(
2072                         new FauxRequest(
2073                                 array(
2074                                         'page' => $title->getPrefixedText(),
2075                                         'type' => 'delete',
2076                                         )
2077                         )
2078                 );
2079                 if( $reader->hasRows() ) {
2080                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2081                         $out->addWikiText( wfMsg( 'recreate-deleted-warn' ) );
2082                         $viewer = new LogViewer( $reader );
2083                         $viewer->showList( $out );
2084                         $out->addHtml( '</div>' );
2085                 }
2086         }
2087
2088 }
2089
2090